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(11) | EP 2 558 404 B1 |
| (12) | EUROPEAN PATENT SPECIFICATION |
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| (54) |
BOOM, PERSONNEL HOIST, AND METHOD FOR USING PERSONNEL HOIST AUSLEGER, PERSONENHEBEVORRICHTUNG UND VERFAHREN ZUR VERWENDUNG DER PERSONENHEBEVORRICHTUNG FLÈCHE, MONTE-PERSONNEL, ET PROCÉDÉ D'UTILISATION D'UN MONTE-PERSONNEL |
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| Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). |
Background of the invention
[0001] The invention relates to a boom that comprises a first boom part and a second boom part connected to each other by a connecting member. When the boom is lowered to its transport position, the boom parts are side by side.
[0002] The invention further relates to a personnel hoist and a method for using it. The field of the invention is described in more detail in the preambles of the independent claims of the patent application.
[0003] Higher and higher buildings are constructed all the time, which is why the personnel hoists of fire and rescue services need to be equipped with cage booms that extend ever higher. The current boom solutions extend to a height of nearly 100 m. However, it is difficult to increase the extension length of a boom, because the total height of a personnel hoist in its transport position needs to be rather low so as to allow the personnel hoist to fit under bridges and through tunnels of a normal road network. To make the height of the boom in its transport position as low as possible, a connecting member is arranged between the boom parts in the boom to allow the lowering of the upper boom part to the side of the lower boom part in the transport position. However, with booms of extremely high extensibility, problems have been detected in the stability and usability of the personnel hoist. These problems are caused, among other things, by the fact that the longitudinal axes of the boom parts are at a distance from each other and, in addition, the loads directed to the boom change during the use of the boom depending on the use direction of the boom. Thus, the present structures include drawbacks that limit the increase in the boom extension. In GB-1484263-A is disclosed a platform positioning machine and in US-5769251-A is disclosed a boom of a mobile crane.
Brief description of the invention
[0004] It is an object of the present invention to provide a novel and improved boom, personnel hoist, and method for using it.
[0005] The boom of the invention is characterised by features of characterized portion of the first independent apparatus claim.
[0006] The personnel hoist of the invention is characterised by features of characterized portion of the second independent apparatus claim.
[0007] The method of the invention is characterised by features of characterized portion of independent method claim.
[0008] The idea is that between the boom parts, there is a connecting member that comprises a first connection part and a second connection part with a turning axis between them. The first connection part is fastened to the top end of the lower, first boom part, and the second connection part is fastened to the bottom end of the upper, second boom part. The connecting member permits the turning of the second boom part between transport and turning positions. In the transport position, the boom parts are side by side and their axes are on different vertical planes. When the second boom part is turned to its turning position, its axis is substantially on the same vertical plane with the first boom part.
[0009] One advantage is that the axes of the boom parts are on the same vertical plane in the use position, whereby no crosswise distance is formed between the axes or a torque arm caused thereby that causes sideward loads on the lower boom part. When stresses that are lower than before are directed to the first boom part, its structure can be made lighter. In addition, the present connecting member improves the stability of the boom.
[0010] The idea of an embodiment is that in the turning position the centre of gravity of the boom is kept continuously on one and the same side of an imaginary vertical axis that runs through the fastening point of the bottom end of the boom. Thanks to this application, loads do not move from one side of the boom to the other, and a load that is continuously in the same direction and, thus, also easier to take into account in the design of the boom construction, is directed to the boom. Therefore, the boom may be designed lighter, when the loads are better controlled. In addition, the boom is more stable in use, when the direction of the loads does not vary continuously during use.
[0011] The idea of an embodiment is that the second boom part is turned 180° or nearly 180° relative to the turning axis, when it is moved into the turning position.
[0012] The idea of an embodiment is that on the turning axis there is one or more turning members that connect the first and second connection parts turnably to each other. The turning member may be an elongated pivot pin, for instance, or some other corresponding member that permits turning.
[0013] The idea of an embodiment is that the turning axis has only one turning member that connects the first and second connection parts turnably to each other. The turning member may be an elongated pivot pin, for instance, or some other corresponding elongated member. One uniform turning member enables a simple and robust structure.
[0014] The idea of an embodiment is that the centre axis of the turning member has one or more channels. The channel may be a pipe, tube, cable, or a corresponding transfer member or path intended for transferring water, extinguishing medium, pressure fluid, compressed air, or electricity. When a transfer path of this type is in the turning centre, forces from the turning of the second boom part are not directed around its longitudinal axis, whereby no complex means allowing turning are not required in connection with the transfer path.
[0015] The idea of an embodiment is that one or more medium channels are led through the centre axis of the turning member.
[0016] The idea of an embodiment is that the turning member is a tubular piece with one or more water pipes arranged therein.
[0017] The idea of an embodiment is that the connecting member comprises one or more turning devices, the linear motion of which is transformed into a turning motion. The turning device is a pressure medium-operated cylinder, preferably a hydraulic cylinder. Cylinders are inexpensive and reliable turning devices. In addition, a cylinder may generate a high force in relation to its size.
[0018] The idea of an embodiment is that the connecting member comprises at least two turning devices and the size of the turning motion generated by both of them together moves the second boom part between the transport and turning positions. The first turning device and the second turning device are hydraulic cylinders which both provide a limited turning angle. The first turning device is connected between the first boom part and a turning piece fastened to the turning device and, correspondingly, the second turning device is connected between the second boom part and the turning piece. By means of the first turning device, the second boom part may be turned 90° relative to the turning piece and, correspondingly, by means of the second turning device, the turning piece can be turned 90° relative to the first boom part, whereby the second boom part also turns. Thanks to this embodiment, complex joint mechanisms that are difficult to manufacture, require maintenance and are prone to malfunction, are no longer needed. The present turning mechanism can also be designed to be very rigid and strong. Turning devices may be used in steps or simultaneously to provide the necessary turning motion.
[0019] The idea of an embodiment is that the second boom part is turned at a limited angle relative to its horizontal joint before it is moved in relation to the turning axis of the turning piece from the transport position to the turning position. When the second boom part is opened to some extent, there is more room for turning.
[0020] The idea of an embodiment is that the second boom part is loaded before it is turned from the transport position to the turning position. Before the second boom part is turned, one or more persons step into the man cage. Thus, the boom is under load during turning. It is then possible to step into the man cage from the carriage, which speeds up the driving of the boom to the operating site.
[0021] The idea of an embodiment is to use the boom without turning the second boom part into its turning position in situations where the operation takes place at a limited height. The telescopic first boom part is then not extended at all or at least not to its full length. When operating at smaller heights, the second boom part may be on the "back side" of the boom, that is, on the opposite side to the lifting cylinders. At smaller heights, the stability and loads usually do not cause problems. When operating at high altitudes, the second boom part is turned onto the same vertical plane with the first boom. This embodiment may be used for instance to facilitate entering the man cage, when operating at relatively low heights, or when the boom is used at sites below the operating carriage, downward from a bridge or slope, for instance.
[0022] The idea of an embodiment is that the connecting member comprises locking means with which the second connection part can be locked into the transport position and turning position, respectively. Locking improves the stability and safety of the boom.
[0023] The idea of an embodiment is that the connecting member has locking means, the operating status of which is monitored by means of one or more sensors. Sensor data is transmitted from the sensor to one or more control units of the personnel hoist to be taken into account in the control of the boom. The sensor means help avoiding dangerous situations and incorrect use of the boom. It is also possible to detect if the locking malfunctions.
[0024] The idea of an embodiment is that the connecting member comprises locking lugs and locking actuators for locking the second connection part into the transport position and turning position. The locking actuator may be a locking cylinder, the piston rod of which is pushed in a locking opening in the locking lug to achieve locking and pulled out of the locking opening to release the locking. This type of locking is simple, reliable, and firm. In addition, it is relatively easy to manufacture and service.
[0025] The idea of an embodiment is that the connecting member comprises at least one turning device that may be locked stationary so that the motion of the second connection part can be locked in the transport and turning positions. Separate locking means are then not absolutely necessary in the connection parts.
[0026] The idea of an embodiment is that on the turning axis there is one or more turning bearings, such as a ball race, which connect the first and second connection parts turnably to each other.
[0027] The idea of an embodiment is that the personnel hoist comprises a control cabin that is located on the front part of the movable carriage. The turning frame is, in turn, located on the back part of the movable carriage. In the transport position, the boom is then between the control cabin and turning frame. Owing to this embodiment, the layout of the carriage is easier to arrange suitable, and weight distribution can be made advantageous.
[0028] The idea of an embodiment is that the personnel hoist comprises a control unit containing a control strategy for controlling the boom. The control unit may for instance be arranged to make sure that, during use, the centre of gravity of the boom remains on one and the same side relative to the vertical axis running through the bottom end of the boom. This improves the safety of the personnel hoist.
[0029] The idea of an embodiment is that the personnel hoist comprises a control unit containing a control strategy for controlling the boom. The control unit may have an automatic mode for the operator to select when the boom is taken into use after a transfer run. Automatic control may drive the boom to a predefined starting position, and it may also open the boom parts in a predefined manner. An automatic start function may facilitate and speed up the work, improve the safety of the personnel hoist, and it may also help avoid incorrect operation of the boom and the equipment damage caused thereby.
Brief description of the figures
[0030] Some embodiments of the invention will be described in more detail in the attached drawings, in which
Figure 1a is a schematic representation of a prior-art personnel hoist in its upper position;
Figure 1b is a schematic representation of a personnel hoist according to the invention in its upper position;
Figure 2 is a schematic side representation of a personnel hoist according to the invention;
Figure 3 is a schematic representation of a prior-art connecting member with which boom parts are attached to each other;
Figure 4 is a schematic representation of a connecting member according to the invention for connecting boom parts turnably to each other;
Figure 5 shows the connecting member of Figure 4 after the second boom part has been turned from the first position shown in Figure 4 to its second position;
Figure 6 is a schematic representation of means connected to the connecting member, with which the second boom part may be turned 180° in relation the first boom part;
Figure 7 is a schematic sectional view of a part of the connecting member and shows in particular a hollow pivot pin with at least one channel through it;
Figures 8a to 8c are schematic representations of the steps of turning the second boom part as seen from the top of the first boom part; and
Figure 9 is a schematic representation of a second connecting part.
[0031] In the figures, some embodiments of the invention are shown simplified for the sake of clarity. Similar parts are marked with the same reference numbers in the figures.
Detailed description of some embodiments of the invention
[0032] Figures 1a, 1b, and 2 show the basic construction of a personnel hoist 1 comprising a carriage 2 and a boom 3 arranged thereto. The carriage 2 may be a movable carriage, such as a vehicle or trailer. The carriage 2 may have a turning frame 4 to which the bottom end of the boom 3 is fastened by a first joint 5. At the top end of the boom 3, there may be a man cage 6 with space for lifting one or more persons. In addition, in connection with the man cage 6, there may be necessary tools, such as means for spraying fire extinguishing medium. The boom 3 may comprise a first boom part 3a and a second boom part 3b that are connected to each other with a second joint 7. The bottom of the first boom part 3a is fastened to the turning frame 4 by means of the first joint 5, whereby it may be lifted and lowered in relation to the joint 5 in the manner shown in the figures by arrow A. By turning the turning frame 4, the boom 3 may be moved sideways, which is shown by arrow B in the figures. The second boom part 3b may be lifted and lowered in relation to the second joint 7, as shown by arrow C. Further, the length of the first boom part 3a and second boom part 3b may be altered telescopically, whereby the boom may be extended for the use position shown in Figures 1 a and 1 b and shortened for the transport position shown in Figure 2. The movements of the telescopic parts are indicated in the figures by arrows Da and Db. The man cage 6 may also have an auxiliary boom 6a or a corresponding member with which the man cage 6 is connected to the top end of the second boom part 3b.
[0033] Figure 1 a shows a known personnel hoist 1 in which the second boom part 3b is connected to the top part of the first boom 3a by means of a fixed connecting member 8 shown in Figure 3. The second boom part 3b is all the time on a different vertical plane to the axis of the first boom part 3a. In Figure 1a, a dot-and-dash line shows the vertical axis P that runs through the bottom end of the boom 3. When the boom 3 is moved during use, the centre of gravity of the boom 3 changes depending on the position of the second boom 3b. Sometimes the centre of gravity is on the left side of the vertical axis P in the figure and sometimes on the right side. The loads directed to the boom 3 then vary from side to side, which causes instability in a long boom 3. In addition, a directionally variable load is directed to the boom 3, which causes strain on its structure. Further, as shown in Figure 3, the axis of the first boom part 3a and that of the second boom part 3b are at a cross-direction distance L from each other, that is, there is a torque arm between them. The mass of the second boom part 3b then causes a crosswise torsional load to the first boom part 3a. All in all, load management and stability are big challenges in this construction. If this structure is applied to the personnel hoist 1, the extensibility of the boom 3 can no longer be increased in a sensible manner.
[0034] Figure 1b shows a personnel hoist 1 according to the invention, in which the drawbacks of the prior art can be avoided, because the boom parts 3a, 3b are connected to each other with a turnable connecting member 8 of the type shown in Figures 4 and 5. During the use of the boom 3, the second boom part 3b can then be turned in the direction of arrow E shown in Figure 1b 180° or nearly 180° in relation to the first boom part 3a, whereby the axis of the second boom part 3b arrives at the same imaginary vertical plane T as that of the first boom part 3a. In addition, when operating at greater heights, the second boom part 3b is continuously on the "belly side" of the boom, that is, on the side of the lifting cylinders. Even though the second boom part 3b is moved during use in the direction of arrow C, the centre of gravity of the boom 3 remains all the time on the same side of the vertical axis P running through the foot of the boom. The loads then do not vary during the use of the boom, and the boom may be more stable than before when operating at great heights.
[0035] Movements of the second boom part 3b, when it has not yet been turned into its turning position, are marked by dashed lines V1 and V2 in Figure 1 b. It is, in fact, possible to utilize the second boom part 3b at heights smaller than a predefined height Y when operating on the "back side" of the boom. When operating at a relatively small height, moving the boom in this manner does not cause problems with stability, nor does it load the structures significantly. When it is necessary to operate at greater heights, the second boom part 3b is turned to its turning position.
[0036] Figure 1b also shows the driving of the boom 3 to its use position. First, the first boom part 3a can be lifted up, after which the second boom part 3b is turned to some extent in relation to the joint 7, that is, the second boom part 3b is opened U. After this, loads may be set on the boom 3, the second boom part 3b may be turned to its turning position, and the boom parts extended. Alternatively, if the operation takes place at smaller heights, loads can be set on the boom and it can be used without turning the second boom part 3b to its use position.
[0037] In Figure 2, the personnel hoist 1 is shown in the transport position, in which its height H may be 4 metres or less. The personnel hoist 1 can then be transported along normal road networks without its height H restricting its use in any way. The carriage 2 may be a truck, for instance. As seen in Figure 4, the turning frame 4 may reside at the back of the carriage 2, that is, at the opposite end to the control cabin 9. This is advantageous for weight distribution and the reach of the device, for instance. When the turning frame 4 is at the back of the carriage 2, the man cage 6 in its transport position is also at the back of the carriage 2. It is then easy to get into the man cage 6 from the back of the carriage. In addition, the man cage 6 may in the transport position be on the section over the back of the carriage, whereby the space required by the man cage 6 downward from the boom 3 does not set requirements to the carriage structures. The carriage 2 also comprises ground supports on which the carriage is supported before starting to use the boom. In connection with the personnel hoist 1, there may also be sensors for detecting that the carriage is properly supported. The control unit of the personnel hoist may be arranged to allow the use of the boom only after the support of the carriage has been detected.
[0038] Figures 4 and 5 show the structure and operation of the connecting member 8. In Figure 4, the connecting member 8 is in its unturned basic position, that is, in the position in which it is when the boom 3 is in the transport position shown in Figure 2. The connecting member 8 fastens the first boom part 3a and the second boom part 3b permanently to each other and they are not separated from each other at any time, excluding possible maintenance and repair. The connecting member 8 comprises a first connection part 10a and a second connection part 10b with a turning axis K between them. The first connection part 10a is fastened to the top end of the lower, first boom part 3a, and the second connection part 10b is fastened to the bottom end of the upper, second boom part 3b. The connecting member 8 permits the turning of the second boom part 3b between the transport and turning positions. In the transport position, the boom parts 3a, 3b are side by side and their axes are on different vertical planes. When the second boom part 3b is turned to its turning position in direction E, its axis is substantially on the same vertical plane T with the first boom part 3a, as shown in Figure 5.
[0039] On the turning axis K, there may be one or more turning members 11 with which the connection parts 10a, 10b are turnably connected to each other. The turning member 11 and connection parts 10a, 10b thus form a type of hinge, the turning axis K of which is parallel to the axis of the first boom part 3a. The turning member 11 may comprise a channel 12 on the turning axis K, and it is possible to lead through it one or more medium pipes or tubes, electric cables or any type of transfer path for transporting energy or a medium between the boom parts 3a, 3b. Figure 5 shows that on the turning axis K there may be two tubular turning members 11 a, 11 b that connect the connection lugs in the connection parts 10a, 10b to each other.
[0040] Figures 4 and 5 also show that the connecting member 8 is equipped with locking members with which the connection parts 10a, 10b can be rigidly locked into the transport position and turning position, respectively. The locking members may comprise first locking lugs 13a that are compatible in the transport position and second locking logs 13b that are compatible in the turning position and the locking lugs intermesh so that the openings 14 in them are aligned. A locking pin 15 can then be pushed through the openings 14 by means of a locking cylinder 16 or a corresponding locking mechanism. The locking pin 15 and cylinder 16 are shown in Figures 6, 7, and 9. As can be seen in the figures, the piston rod of the locking cylinder 16 may serve as the locking pin 15.
[0041] A possible turning mechanism is shown in Figure 6. The connecting member 8 may comprise two turning devices 17a, 17b, and the size of the turning motion provided with both of them together moves the second boom part 3b between the transport and turning positions. The turning devices may be hydraulic cylinders which both provide a limited turning angle. The first turning device 17a is connected between the first boom part 3a and a turning piece 18 fastened to the turning member 11. Similarly, the second turning device 17b is connected between the second boom part 3b and the turning piece 18. By means of the first turning device 17a, the second boom part 3b may be turned 90° and, correspondingly, by means of the second turning device 17b, it can be turned 90° relative to the first boom part 3a. Figures 8a to 8c show the operation of the turning mechanism in more detail. Figure 6 also shows that the connecting member 8 may be equipped with mechanical limiters 19 with which the turning motion can be limited. Then, the motion of the turning devices 17a, 17b does not need to be precisely controlled. The limiter 19 may be a pin with adjustable length. Figure 6 also shows locking means that may include locking lugs 13a, 13b, locking openings, and locking cylinders 16.
[0042] Figure 7 shows a detail of the structure of the connecting member 8. The piston rod 15 of the locking cylinder 16 may extend through the locking lugs 13a and lock the connection parts stationary. In connection with the locking device, there may be one or more sensors 20 for monitoring the operation of the lock. Locking information may be transmitted to a control unit 21 that prevents the boom being lifted higher before locking has been accomplished in the turning position. In addition, through monitoring it is possible to obtain information on the condition and service requirements of the locking device.
[0043] Figure 7 further shows a connection member 11 that is an elongated tubular piece, a kind of hollow hinge pin that connects the connection parts 10a, 10b turnably to each other. One or more transfer paths 22, such as a pressure medium pipe, pressure medium tube, electric cable, or the like, may be arranged through the channel on the turning axis of the connection member 11.
[0044] Figures 8a to 8c shows step by step the turning of the second boom part 3b from its basic position to the turning position. In Figures 8b and 8c, the structure is shown in a highly simplified manner for the sake of clarity. In Figure 8b, the first turning device 17a has finished its work cycle and pushed the turning piece 18 90° around the turning axis K, whereby the second boom part 3b has turned 90°. In Figure 8c, the second turning device 17b has also finished its work cycle, whereby only the second boom part 3b has turned yet another 90° while the turning piece 18 remains stationary held by the first turning device 17a. The linear movement of the two cylinders 17a, 17b is through this structure transformed into a turning movement. The turning devices 17a, 17b may be arranged to operate in the manner shown in the figures step by step or, alternatively, they may operate at simultaneously.
[0045] Figure 9 shows the second connection part 10b in perspective. The features described above are marked by reference numbers in the figure. In addition to these, the figure also shows lugs 24 through which the axle of the turning joint 7 is arranged.
[0046] Differing from the embodiment shown in Figures 6, and 8a to 8c, it is also possible to use one single turning device or more than two, for instance three or four, turning devices. Further, it is possible that the turning device is not a cylinder but some other actuator, such as a hydraulic motor. Further, instead of hydraulics, it is possible to use some other pressure medium, such as compressed air. It is also possible to equip the connecting member with one or more electric turning devices.
[0047] In some cases, the features described in this application may be used as such, regardless of other features. On the other hand, the features described in this application may also be combined to provide various combinations as necessary.
[0048] It should yet be noted that the above features may also be used in booms that differ from those presented above by not comprising a man cage. This may then be a boom intended for rescue operations that comprises in a similar manner at least first and second boom parts and a connecting member of the described type between the boom parts, whereby the upper boom part may be turned into its turning position in which it is substantially on the same vertical plane with the lower boom part. This type of rescue boom may comprise one or more rescue actuators, the operation of which can be remote-controlled. For remote control, the rescue boom may be equipped with one or more cameras, heat sensors or the like. A rescue actuator may comprise means for supplying extinguishing medium. Thus, the rescue actuator may be a water sprayer or an extinguishing foam nozzle. Other possible devices required in rescue and fire fighting operations are also possible. Further, it is possible that the top part of the boom has a snap lock member to which any tool, such as a sprayer or man cage, used in rescue operations can be fastened.
a first boom part (3a), provided with a joint (5) allowing lifting and lowering of the first boom part (3a);
a second boom part (3b);
a connecting member (8) with which the boom parts (3a, 3b) are permanently connected to each other;
at least one joint (7) with which the second boom part (3b) is connected to the connecting member (8), whereby the second boom part (3b) is lifted and lowered in relation to said joint (7);
at least one man cage (6) that is arranged to the top part of the second boom part (3b);
wherein the boom (3) has a transport position in which the boom parts (3a, 3b) are substantially horizontally side by side and their axes are on different vertical planes;
characterized in that
the connecting member (8) comprises a first connection part (10a) and a second connection part (10b), and the first connection part (10a) is fastened to the top end of the first boom part (3a) and the second connection part (10b) is fastened to the bottom end of the second boom part (3b);
between the connection parts (10a, 10b), there is at least one turning axis (K) that is parallel to that of the first boom part (3a);
the connecting member (8) comprises at least one turning device (17a, 17b) for moving the second connection part (10b) in relation to the first connection part (10a) around the turning axis (K); and
the boom (3) has a turning position in which the second connection part (10b) and the second boom part (3b) fastened thereto are turned in a position in which the axes of the boom parts (3a, 3b) are substantially on the same vertical plane (T);
the connecting member comprises one or more pressure medium operated cylinders serving as the at least one turning device (17a, 17b), whereby the linear motion of the one or more pressure medium operated cylinders is transformed into a turning motion.
on the centre axis of the turning member (11, 11 a, 11 b), there is at least one channel (12).
the turning member (11, 11 a, 11 b) is a tubular piece through which at least one medium channel (22) is arranged.
a movable carriage (2);
a turning frame (4) arrange turnably on the carriage (2);
a boom (3) that comprises a first boom part (3a) and a second boom part (3b);
a connecting member (8) with which the boom parts (3a, 3b) are continuously connected to each other;
a first joint (5) with which the bottom part of the first boom part (3a) is connected to the turning frame (4), whereby the first boom part (3a) is lifted and lowered in relation to the first joint (5);
at least one other joint (7) with which the second boom part (3b) is connected to the connecting member (8), whereby the second boom part (3b) is lifted and lowered in relation to said joint (7);
at least one man cage (6) that is arranged to the top part of the second boom part (3b);
wherein the boom (3) has a transport position in which it is horizontally supported by the carriage (2) and the boom parts (3a, 3b) are side by side so that their axes are on different vertical planes;
characterized in that
the connecting member (8) comprises a first connection part (10a) and a second connection part (10b), and the first connection part (10a) is fastened to the top end of the first boom part (3a) and the second connection part (10b) is fastened to the bottom end of the second boom part (3b);
between the connection parts (10a, 10b), there is at least one turning axis (K) that is parallel to that of the first boom part (3a);
the connecting member (8) comprises at least one turning device (17a, 17b) for moving the second connection part (10b) in relation to the first connection part (10a) around the turning axis (K); and
the boom (3) has a turning position in which the second connection part (10b) and the second boom part (3b) fastened thereto are turned from the transport position to a position in which the axes of the boom parts (3a, 3b) are substantially on the same vertical plane (T);
the connecting member comprises one or more pressure medium operated cylinders serving as the at least one turning device (17a, 17b), whereby the linear motion of the one or more pressure medium operated cylinders is transformed into a turning motion.
the personnel hoist (1) comprises a control cabin (9) that is located at the first end of the movable carriage (2); and
the turning frame (4) is located at the other, opposite end of the movable carriage (2).
which personnel hoist (1) comprises: a movable carriage (2); a boom (3) that comprises a first boom part (3a) and a second boom part (3b); a connecting member (8) between the boom parts (3a, 3b) for connecting the boom parts permanently to each other; and a man cage (6);
the method comprising:
setting the boom (3) for transport to a transport position in which it is supported horizontally on the carriage (2) while the boom parts (3a, 3b) settle side by side so that their axes are on different vertical planes; and
lifting at least the lower, first boom part (3a) into its vertical position for the purpose of using the boom (3);
characterized by
turning the upper, second boom part (3b) to the turning position in which its axis settles substantially on the same vertical plane (T) as the axis of the first boom part (3a) lifted in the upright position;
turning the second boom part (3b) by means of one or more pressure medium cylinders, the linear motion of which is transformed into a turning motion; and
locking the second boom part (3b) into the turning position.
loading the man cage (6) with at least one person before the boom (3) is lifted up from the transport position.
keeping the centre of gravity of the boom (3) in the turning position continuously on one and the same side of a vertical axis (P) that runs through the fastening point (5) of the bottom end of the boom (3).
using first and second hydraulic cylinders (17a, 17b), each having a limited turning angle, to turn the second boom part (3b); and
turning the second boom part (3b) 180° in relation to the first boom part (3a) by the combined effect of said hydraulic cylinders (17a, 17b).
turning the second boom part (3b) around the turning axis (K); and
directing on the turning axis (K) at least one channel (12) from the first boom part (3a) to the second boom part (3b).
detecting the status of the locking in the second boom part (3b); and
preventing the extension of the length of the first boom part (3a) until the second boom part (3b) is locked into its turning position.
turning the first boom part (3a) up in relation to the first horizontal joint (5) at its foot; and
turning the second boom part (3b) open (U) in relation to the second horizontal joint (7) before turning the second boom part (3b) into the turning position.
ein erstes Auslegerteil (3a), das mit einem Gelenk (5) versehen ist, welches ein Anheben und Absenken des ersten Auslegerteils (3a) ermöglicht;
ein zweites Auslegerteil (3b);
ein Verbindungsglied (8), mit welchem die Auslegerteile (3a, 3b) dauerhaft miteinander verbunden sind;
zumindest ein Gelenk (7), mit welchem das zweite Auslegerteil (3b) mit dem Verbindungsglied (8) verbunden ist, wodurch das zweite Auslegerteil (3b) in Bezug auf das Gelenk (7) angehoben und abgesenkt wird;
zumindest ein Personen-Fahrkorb (6), der an dem oberen Teil des zweiten Auslegerteils (3b) vorgesehen ist;
wobei der Ausleger (3) eine Transportposition hat, in welcher die Auslegerteile (3a, 3b) im Wesentlichen horizontal Seite an Seite liegen, und ihre Achsen auf unterschiedlichen Vertikalebenen liegen;
dadurch gekennzeichnet, dass
das Verbindungsglied (8) ein erstes Verbindungsteil (10a) und ein zweites Verbindungsteil (10b) aufweist, und das erste Verbindungsteil (10a) an dem oberen Ende des ersten Auslegerteils (3a) befestigt ist, und das zweite Verbindungsteil (10b) an dem unteren Ende des zweiten Auslegerteils (3b) befestigt ist;
zwischen den Verbindungsteilen (10a, 10b) zumindest eine Drehachse (K) vorhanden ist, die parallel zu jener des ersten Auslegerteils (3a) verläuft;
das Verbindungsglied (8) zumindest eine Drehvorrichtung (17a, 17b) aufweist, zum Bewegen des zweiten Verbindungsteils (10b), in Bezug auf das erste Verbindungsteil (10a), um die Drehachse (K) herum; und
der Ausleger (3) eine Drehposition hat, in welcher das zweite Verbindungsteil (10b) und das an diesem befestigte zweite Auslegerteil (3b) in eine Position gedreht werden, in welcher die Achsen der Auslegerteile (3a, 3b) im Wesentlichen auf der Vertikalebene (T) verlaufen;
das Verbindungsglied einen oder mehrere, durch ein Druckmedium betätigte Zylinder aufweist, die als die zumindest eine Drehvorrichtung (17a, 17b) dienen, wodurch die Linearbewegung des einen oder der mehreren durch ein Druckmedium betätigten Zylinder in eine Drehbewegung umgewandelt wird.
auf der Drehachse (K) zumindest ein Drehglied (11, 11a, 11b) vorgesehen ist, welches das erste Drehteil (10a) und das zweite Drehteil (10b) drehbar miteinander verbindet.
auf der Zentrumsachse des Drehteils (11, 11a, 11b) zumindest ein Kanal (12) vorgesehen ist.
ein bewegbares Transportmittel (2);
ein Drehgestell (4), das drehbar auf dem Transportmittel (2) angeordnet ist;
einen Ausleger (3), der ein erstes Auslegerteil (3a) und ein zweites Auslegerteil (3b) aufweist;
ein Verbindungsglied (8), mit welchem die Auslegerteile (3a, 3b) durchgehend miteinander verbunden sind;
ein erstes Gelenk (5), mit welchem das untere Teil des ersten Auslegerteils (3a) mit dem Drehgestell (4) verbunden ist, wodurch das erste Auslegerteil (3a) in Bezug auf das erste Gelenk (5) angehoben und abgesenkt wird;
zumindest ein weiteres Gelenk (7), mit welchem das zweite Auslegerteil (3d) mit dem Verbindungsglied (8) verbunden ist, wodurch das zweite Auslegerteil (3b) in Bezug auf das Gelenk (7) angehoben und abgesenkt wird;
zumindest einen Personen-Fahrkorb (6), der an dem oberen Teil des zweiten Auslegerteils (3b) angeordnet ist;
wobei der Ausleger (3) eine Transportposition aufweist, in welchem er horizontal durch das Transportmittel (2) gehaltert wird, und die Auslegerteile (3a, 3b) Seite an Seite liegen, so dass sich ihre Achsen auf unterschiedlichen Vertikalebenen befinden;
dadurch gekennzeichnet, dass
das Verbindungsglied (8) ein erstes Verbindungsteil (10a) und ein zweites Verbindungsteil (10b) aufweist, und das erste Verbindungsteil (10a) an dem oberen Ende des ersten Auslegerteils (3a) befestigt ist, und das zweite Verbindungsteil (10d) an dem unteren Ende des zweiten Auslegerteils (3b) befestigt ist;
zwischen den Verbindungsteilen (10a, 10b) zumindest eine Drehachse (K) vorhanden ist, die parallel zu jener des ersten Auslegerteils (3a) verläuft;
das Verbindungsglied (8) zumindest eine Drehvorrichtung (17a, 17b) aufweist, um das zweite Verbindungsteil (10b) in Bezug auf das erste Verbindungsteil (10a) um die Drehachse (K) herumzubewegen; und
der Ausleger (3) eine Drehposition aufweist, in welcher das zweite Verbindungsteil (10b) und das daran befestigte zweite Auslegerteil (3b) von der Transportposition in eine Position gedreht werden, in welcher die Achsen der Auslegerteile (3a, 3b) im Wesentlichen auf der selben Vertikalebene (T) liegen;
das Verbindungsglied einen oder mehrere durch ein Druckmedium betätigte Zylinder aufweist, die als die zumindest eine Drehvorrichtung (17a, 17b) dienen, wodurch die Linearbewegung des einen oder der mehreren durch ein Druckmedium betätigten Zylinder in eine Drehbewegung umgewandelt wird.
das Personen-Hebezeug (1) eine Steuerkabine (9) aufweist, die an dem ersten Ende des bewegbaren Transportmittels (2) angeordnet ist; und
das Drehgestell (4) an dem anderen, entgegengesetzten Ende des bewegbaren Transportmittels (2) angeordnet ist.
wobei das Verfahren umfasst:
Einstellen des Auslegers (3) zum Transport in eine Transportposition, in welcher er horizontal auf dem Transportmittel (2) gehaltert wird, während die Auslegerteile (3a, 3b) Seite an Seite zur Ruhe kommen, so dass ihre Achsen auf unterschiedlichen Vertikalebenen liegen;
Anheben zumindest des unteren, ersten Auslegerteils (3a) in seine vertikale Position zum Zwecke der Verwendung des Auslegers (3);
dadurch gekennzeichnet, dass
das obere, zweite Auslegerteil (3b) in die Drehposition gedreht wird, in welcher seine Achse im Wesentlichen auf der selben Vertikalebene (T) zur Ruhe kommt, wie die Achse des ersten Auflegerteils (3a), das in die aufrechte Position angehoben wurde;
das zweite Auslegerteil (3b) durch einen oder mehrere Druckmedium-Zylinder gedreht wird, deren Linearbewegung in eine Drehbewegung umgewandelt wird;
das zweite Auslegerteil (3b) in der Drehposition verriegelt wird.
Beladen des Personen-Fahrkorbs (6) mit zumindest einer Person, bevor der Ausleger (3) von der Transportposition aus angehoben wird.
Drehen des zweiten Auslegerteils (3b) in die Drehposition, während der Ausleger (3) mit der Masse zumindest einer Person beladen ist.
Halten des Schwerpunktes des Auslegers (3) in der Drehposition kontinuierlich auf ein und derselben Seite einer Vertikalachse (P), die durch den Befestigungspunkt (5) des unteren Endes des Auslegers (3) verläuft.
Verwenden eines ersten und eines zweiten Hydraulikzylinders (17a, 17b), die jeweils einen begrenzten Drehwinkel aufweisen, zum Drehen des zweiten Auslegerteils (3b);
Drehen des zweiten Auslegerteils (3b) um 180° in Bezug zu dem ersten Auslegerteil (3a) durch die vereinigte Auswirkung der Hydraulikzylinder (17a, 17b).
Drehen des zweiten Auslegerteils (3b) um die Drehachse (K); und
Führen, auf der Drehachse (K), zumindest eines Kanals (12) von dem ersten Auslegerteil (3a) zu dem zweiten Auslegerteil (3b).
Erfassung des Zustandes der Verriegelung in dem zweiten Auslegerteil (3b); und
Verhindern des Ausfahrens der Länge des ersten Auslegerteils (3a), bis das zweite Auslegerteil (3b) in seiner Drehposition verriegelt ist.
Drehen des ersten Auslegerteils (3a) nach oben in Bezug auf das erste horizontale Gelenk (5) an einem Fuß; und
Drehen des zweiten Auslegerteils (3b) offen (U) in Bezug auf das zweite horizontale Gelenk (7), bevor das zweite Auslegerteil (3b) in die Drehposition gedreht wird.
une première partie de flèche (3a), munie d'une articulation (5) permettant le levage et l'abaissement de la première partie de flèche (3a) ;
une deuxième partie de flèche (3b) ;
un organe de liaison (8) avec lequel les parties de flèche (3a, 3b) sont reliées de façon permanente les unes aux autres ;
au moins une articulation (7), par laquelle la deuxième partie de flèche (3b) est reliée à l'organe de liaison (8), la deuxième partie de flèche (3b) étant ainsi soulevée et abaissée en relation avec ladite articulation (7) ;
au moins un monte-personnel (6) qui est disposé sur la partie supérieure de la deuxième partie de flèche (3b) ;
la flèche (3) ayant une position de transport dans laquelle les parties de flèche (3a, 3b) sont placées sensiblement horizontalement côte à côte et leurs axes se trouvent sur des plans verticaux différents ;
caractérisée en ce que
l'organe de liaison (8) comprend une première pièce de connexion (10a) et une deuxième pièce de connexion (10b), la première pièce de connexion (10a) étant fixée à l'extrémité supérieure de la première partie de flèche (3a) et la deuxième pièce de connexion (10b) étant fixée à l'extrémité inférieure de la deuxième partie de flèche (3b) ;
entre les parties de connexion (10a, 10b), il y a au moins un axe de pivotement (K) qui est parallèle à celui de la première partie de flèche (3a) ;
l'organe de liaison (8) comprend au moins un dispositif de pivotement (17a, 17b) pour déplacer la deuxième pièce de connexion (10b) en relation avec la première pièce de connexion (10a) autour de l'axe de pivotement (K) ; et
la flèche (3) présente une position de pivotement, dans laquelle la deuxième pièce de connexion (10b) et la deuxième partie de flèche (3b) fixée à celle-ci, sont pivotées dans une position dans laquelle les axes des parties de flèche (3a, 3b) sont sensiblement sur le même plan vertical (T) ;
l'organe de liaison comprend un ou plusieurs vérins actionnés par un médium sous pression, servant en tant que ledit au moins un dispositif de pivotement (17a, 17b), de sorte que le mouvement linéaire d'un ou plusieurs vérins actionnés par un médium sous pression est transformé en un mouvement de pivotement.
sur l'axe de pivotement (K), il y a au moins un organe de pivotement (11, 11a, 11b) qui relie la première pièce de pivotement (10a) et la deuxième pièce de pivotement (10b) de manière pivotante l'une par rapport à l'autre.
sur l'axe central de l'organe de pivotement (11, 11a, 11b), il y a au moins un conduit (12).
l'organe de pivotement (11, 11a, 11b) est une pièce tubulaire à travers laquelle au moins un conduit de fluide (22) est aménagé.
un transporteur mobile (2) ;
un châssis pivotant (4) agencé de manière pivotante sur le transporteur mobile (2) ;
une flèche (3) qui comprend une première partie de flèche (3a) et une deuxième partie de flèche (3b) ;
un organe de liaison (8) au moyen duquel les parties de flèche (3a, 3b) sont reliées en permanence l'une à l'autre ;
une première articulation (5), par laquelle la partie inférieure de la première partie de flèche (3a) est reliée au châssis pivotant (4), la première partie de flèche (3a) étant ainsi soulevée et abaissée en relation avec la première articulation (5) ;
au moins une autre articulation (7), par laquelle la deuxième partie de flèche (3b) est reliée à l'organe de liaison (8), la deuxième partie de flèche (3b) étant ainsi soulevée et abaissée en relation avec ladite articulation (7) ;
au moins un monte-personnel (6) qui est disposé sur la partie supérieure de la deuxième partie de flèche (3b) ;
la flèche (3) ayant une position de transport dans laquelle elle est supportée horizontalement par le transporteur mobile (2), et les parties de flèche (3a, 3b) sont côte à côte de sorte que leurs axes se trouvent sur des plans verticaux différents ;
caractérisé en ce que
l'organe de liaison (8) comprend une première pièce de connexion (10a) et une deuxième pièce de connexion (10b), la première pièce de connexion (10a) étant fixée à l'extrémité supérieure de la première partie de flèche (3a) et la deuxième pièce de connexion (10b) étant fixée à l'extrémité inférieure de la deuxième partie de flèche (3b) ;
entre les parties de connexion (10a, 10b), il y a au moins un axe de pivotement (K) qui est parallèle à celui de la première partie de flèche (3a) ;
l'organe de liaison (8) comprend au moins un dispositif de pivotement (17a, 17b) pour déplacer la deuxième pièce de connexion (10b) par rapport à la première pièce de connexion (10a) autour de l'axe de pivotement (K) ; et
la flèche (3) présente une position de pivotement dans laquelle la deuxième pièce de connexion (10b) et la deuxième partie de flèche (3b) fixée à celui-ci sont pivotées de la position de transport vers une position dans laquelle les axes des parties de flèche (3a, 3b) sont sensiblement dans le même plan vertical (T) ;
l'organe de liaison comprend un ou plusieurs vérins actionnés par un médium sous pression agissant en tant que ledit au moins un dispositif de pivotement (17a, 17b), de sorte que le mouvement linéaire du ou desdits vérins actionnés par un médium sous pression est transformé en un mouvement de rotation.
le monte-personnel (1) comprend une cabine de commande (9) qui est située à la première extrémité du transporteur mobile (2) ; et
le châssis pivotant (4) est situé à l'autre extrémité, opposée, du transporteur mobile (2).
lequel monte-personnel (1) comprend : un transporteur mobile (2) ; une flèche (3) qui comprend une première partie de flèche (3a) et une deuxième partie de flèche (3b) ; un organe de liaison (8) entre les parties de flèche (3a, 3b) pour connecter les parties de flèche de façon permanente les uns aux autres ; et un monte-personnel (6) ;
le procédé comprenant :
le fait, pour le transport, de placer la flèche (3) dans une position de transport dans laquelle elle est supportée horizontalement sur le transporteur (2) les parties de flèche (3a, 3b) étant placées côte à côte de sorte que leurs axes se trouvent sur des plans verticaux différents ; et
le fait de soulever au moins la première partie de flèche (3a), inférieure, vers sa position verticale dans le but d'utiliser la flèche (3) ;
caractérisé par
le fait de pivoter la deuxième partie de flèche (3b), supérieure, vers la position de pivotement dans laquelle son axe se place sensiblement sur le même plan vertical (T) que l'axe de la première partie de flèche (3a) levée en position verticale ;
le fait de pivoter la deuxième partie de flèche (3b) au moyen d'un ou plusieurs vérins à médium sous pression, dont le mouvement linéaire est transformé en un mouvement de pivotement ; et
le fait de verrouiller la deuxième partie de flèche (3b) dans la position de pivotement.
le fait de charger le monte-personnel (6) avec au moins une personne, avant que la flèche (3) ne soit soulevée depuis la position de transport.
le fait de pivoter la deuxième partie de flèche (3b) vers la position de pivotement alors que la flèche (3) est chargée avec la masse d'au moins une personne.
le fait de conserver le centre de gravité de la flèche (3), dans la position de pivotement, de façon continue, sur un seul et même côté d'un axe vertical (P) qui traverse le point de fixation (5) de l'extrémité inférieure de la flèche (3).
le fait d'utiliser un premier et un deuxième vérins hydrauliques (17a, 17b), ayant chacun un angle de pivotement limité, pour pivoter la deuxième partie de flèche (3b) ; et
le fait de pivoter la deuxième partie de flèche (3b) de 180° par rapport à la première partie de flèche (3a) par l'effet combiné de ces cylindres hydrauliques (17a, 17b).
le fait de pivoter la deuxième partie de flèche (3b) autour de l'axe de pivotement (K) ; et
le fait de diriger sur l'axe de pivotement (K) au moins un conduit (12) depuis la première partie de flèche (3a) vers la deuxième partie de flèche (3b).
le fait de détecter l'état de verrouillage de la deuxième partie de flèche (3b) ; et
le fait d'empêcher l'extension de la longueur de la première partie de flèche (3a) tant que la deuxième partie de flèche (3b) n'est pas verrouillée dans sa position de pivotement.
le fait de pivoter vers le haut la première partie de flèche (3a) par rapport à la première articulation horizontale (5) à sa base ; et
le fait de pivoter la deuxième partie de flèche (3b) vers son ouverture (U) par rapport à la deuxième articulation horizontale (7) avant de pivoter la deuxième partie de flèche (3b) dans la position de pivotement.
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Patent documents cited in the description