TECHNICAL FIELD OF THE INVENTION
[0001] The present invention relates to the technical field of engineering machinery, in
particular to a boom device for a concrete pump truck. The present application also
relates to a concrete pump truck including the above boom device.
BACKGROUND OF THE INVENTION
[0002] With the high-speed development of China's economic construction, the market demands
for construction engineering machineries, especially for concrete pump trucks, are
increased gradually.
[0003] During the operation of the concrete pump truck, a conveying pipe fixed on a boom
is used to convey the concrete to a desired location, and with the change of the conveying
position, the boom is required to bring the conveying pipe to be unfolded, folded
or rotated. Thus, the boom in a concrete pump device generally includes multiple segments
and any one of the boom segments is foldable with respect to another.
[0004] Referring to Fig. 1 and Fig. 2, Fig. 1 is a schematic view of a boom device of a
typical concrete pump truck when the boom device is unfolded, and Fig. 2 is a schematic
view of the typical concrete pump truck when the boom device is folded.
[0005] In a typical concrete pump truck, the boom device includes a first boom 11, a second
boom 12, a third boom 13, a fourth boom 14 and a fifth boom 15. Every two adjacent
booms are hinged with each other via a hinged shaft. A folding oil cylinder 16 and
a connecting rod 17 are mounted between every two adjacent booms to drive one boom
to be folded relative to an adjacent boom so as to convey concrete to various positions
with different heights; and in the meanwhile, when the concrete pump truck is required
to be transported to another place, the booms are folded together to facilitate the
transportation.
[0006] During the construction, concrete is conveyed to the desired location by extending
the boom. Thus, increasing the total length of the boom becomes a long-term object
pursued by the person in the art. At present, the folding methods of the boom generally
include R-type, RZ-type or Z-type. Due to the limitation of the length and height
of the concrete pump truck required by the transportation laws, when the boom has
large number of segments, the boom folded by the above folding methods will have relatively
long transportation length and relatively high transportation height, thereby limiting
the further increasing of the total length of the boom.
[0007] Therefore, an urgent problem to be solved by the person skilled in the art is to
improve the spatial arrangement of the truck body of the concrete pump truck and increase
the total length of the boom while length and height of the folded boom meet the transportation
requirement.
SUMMARY OF THE INVENTION
[0008] The object of the present application is to provide a boom device for a concrete
pump truck, which can effectively increase the total length of the boom while the
length and height of the folded boom device can meet the transportation requirements.
Another object of the present application is to provide the concrete pump truck including
the boom device, in which the spatial arrangement of the truck body is more reasonable.
[0009] For solving the above technical problems, the present application provides the boom
device for the concrete pump truck. The boom device includes multiple booms hinged
with one another. Any one of the multiple booms is operable to rotate relative to
an adjacent boom under the action of a driving member. The boom device further includes
at least one short boom, the short boom is hinged with a distal end of an endmost
boom of the multiple booms via a first hinged shaft, and a first driving member is
mounted between the short boom and the endmost boom. Under the action of the first
driving member, the short boom rotates around the first hinged shaft relative to the
endmost boom, so that when the short boom is folded, the short boom is located below
the endmost and an angle between a axis of the short boom and the vertical plane is
less than or equal to 45°.
[0010] Preferably, when the short boom is unfolded, an angle between the axis of the short
boom and an axial extended line of the endmost boom is less than or equal to 45°.
[0011] Preferably, when the short boom is folded, the short boom is located in a rear portion
of the concrete pump truck in the vertical direction.
[0012] Preferably, the first driving member is a telescopic oil cylinder mounted between
the endmost boom and the short boom. ,
[0013] Preferably, one end of the telescopic oil cylinder is hinged with the endmost boom
and the other end thereof is hinged with the short boom.
[0014] Preferably, two ends of the telescopic oil cylinder are hinged with the endmost boom
and the short boom respectively via a hinged support.
[0015] Preferably, the first driving member includes the telescopic oil cylinder, a first
connecting rod and a second connecting rod, first ends of the first and the second
connecting rods are hinged with the endmost boom and the short boom respectively;
a second end of the first connecting rod is hinged with a second end of the second
connecting rod, one end of the telescopic oil cylinder is fixed to the endmost boom
or the short boom and the other end thereof is fixedly connected with the first connecting
rod or the second connecting rod.
[0016] Preferably, the boom device further includes a positioning member, the positioning
member is mounted between the endmost boom and the short boom so as to selectively
fix the position of the short boom relative to the endmost boom.
[0017] Preferably, the short boom includes a first short boom and a second short boom, one
end of the first short boom is hinged with the endmost boom via the first hinged shaft
and a second end thereof is hinged with the second short boom via a second hinged
shaft parallel to the first hinged shaft; the first driving member is mounted between
the first short boom and the endmost boom to drive the first short boom and is operable
to rotate downwards around the first hinged shaft relative to the endmost boom, a
second driving member is mounted between the first short boom and the second short
boom and is operable to drive the second short boom to rotate upwards around the second
hinged shaft relative to the first short boom.
[0018] The present application also provides a concrete pump truck including any one of
the boom device described above.
[0019] The boom device for the concrete pump truck according to the present application
includes multiple booms hinged with one another and at least one short boom. The short
boom is hinged with the distal end of the endmost boom via the first hinged shaft,
the first driving member is mounted between the short boom and the endmost boom, and
under the action of the first driving member the short boom rotates around the first
hinged shaft relative to the endmost boom. When the boom device is in a working state,
by means of the first driving member between the short boom and the endmost boom,
the short boom is activated to rotate around the first hinged shaft in a direction
away from the endmost boom. At this moment, an angle less than or equal to 45° is
formed between the short boom and the axial extended line of the endmost boom. Therefore,
the total length of the prior boom may be increased by an extended length of the short
boom. When the boom device is required to be transferred or shifted, the short boom
is driven by the first driving member to rotate downwards around the first hinged
shaft in a direction approaching to the endmost boom such that the short boom is located
below the endmost boom and the angle between the axis of the short boom and the vertical
plane is less than or equal to 45°, thereby reducing the height and length of the
folded boom device effectively and further realizing the object to effectively increase
the total length of the boom while the length and height thereof meet the transportation
requirements.
[0020] In a preferred embodiment, one end of the telescopic oil cylinder is hinged with
the endmost boom and the other end thereof is hinged with the short boom. When a cylinder
rod of the telescopic oil cylinder extends from a cylinder tube, the short boom is
driven to be unfolded relative to the endmost boom. Since two ends of the telescopic
oil cylinder are hinged with the short boom or the endmost boom, in the unfolding
process of the short boom, the telescopic oil cylinder may rotate relative to the
short boom and the endmost boom. In this way, when the cylinder rod of the telescopic
oil cylinder extends to a certain position, the axis of the short boom forms an angle
of 180° with respect to the axis of the endmost boom. At this moment, the short boom
is fully unfolded to the largest working length which further increases an effective
total length of the boom device. When the cylinder rod of the telescopic oil cylinder
retracts back to the cylinder tube, owing to the hinged connection of two ends of
the telescopic oil cylinder, i.e. two ends thereof may rotate in a certain angle range,
when the telescopic oil cylinder retracts to a certain position, the axis of the short
boom substantially lies in the vertical plane so as to reduce the total length of
the boom device most efficiently when the short boom is folded.
[0021] In another preferred embodiment, the boom device may further include the positioning
member. The positioning member is mounted between the endmost boom and the short boom
so as to selectively fix the position between the endmost boom and the short boom.
When the short boom is unfolded or folded to a proper angle, the positioning member
is used to fix the position between the endmost boom and the short boom, thereby improving
the reliability of the unfolding and the folding of the boom device.
BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a schematic view of a boom device of a typical concrete pump truck when
the boom device is unfolded;
[0023] Figure 2 is a schematic view of the typical concrete pump truck when the boom device
is folded;
[0024] Figure 3 is a schematic view of a concrete pump truck according to an embodiment
of the present application when a boom device is folded;
[0025] Figure 4 is a partial schematic view of the boom device of the concrete pump truck
according to one embodiment of the present application when the boom device is unfolded;
[0026] Figure 5 is an enlarged schematic view of part A in Fig. 4;
[0027] Figure 6 is a partial schematic view of the boom device of the concrete pump truck
according to one embodiment of the present application when the boom device is folded;
and
[0028] Figure 7 is an enlarged schematic view of part B in Fig. 6.
DETAILED DESCRIPTION OF THE INVENTION
[0029] The object of the present application is to provide a boom device of a concrete pump
truck, in which, when the boom device is folded, the total length of the boom device
is increased effectively while the length and the height of the boom device meet the
transportation requirements. Another object of the present application is to provide
a concrete pump truck including the boom device, in which the spatial arrangement
of the truck body is more reasonable.
[0030] For better understanding of the technical solution of the present application for
the person skilled in the art, the present application will be further described in
detail in conjunction with drawings and embodiments as follows.
[0031] Referring to Fig.3, Fig. 3 is a schematic view of a concrete pump truck according
to an embodiment of the present application when a boom device is folded.
[0032] In one embodiment, the boom device for the concrete pump truck according to the present
application includes multiple booms hinged with one another, wherein a first boom
is hinged onto a platform of the concrete pump truck and may be erected from the platform
of the concrete pump truck under the external force, and any one of the booms may
be rotated relative to an adjacent boom under the action of a driving member so as
to bring the endmost boom to a corresponding working height. At least one short boom
1 is hinged with a distal end of the endmost boom via a first hinged shaft 2, and
a fist driving member is mounted between the short boom 1 and the endmost boom. The
short boom 1 may rotate around the first hinged shaft 2 under the action of the first
driving member.
[0033] When the short boom 1 is unfolded, it is required that an angle between an axis of
the short boom 1 and an axial extended line of the endmost boom is less than or equal
to 45°. Preferably, the angle may be 0°, i.e. the axis of the short boom 1 coincides
with the axial extended line of the endmost boom, at this moment, the angle between
the axis of the short boom and the axis of the endmost boom is 180°. When the short
boom 1 is unfolded to the above state, an effective total length of the boom device
is maximal, thereby increasing a total working length of the boom device remarkably.
[0034] In some working condition, the short boom 1 may be required to be unfolded in the
horizontal direction, at this moment, there will be a specific angle between the short
boom 1 and the endmost boom. When the short boom 1 is folded, the short boom 1 is
located below the endmost boom and an angle between the axis of the short boom 1 and
the vertical plane is less than or equal to 45°. Preferably, the angle may be 0°,
i.e. the short boom 1 is located just in the vertical plane. In this way, the space
occupied by the folded short boom 1 in the truck body length direction of the concrete
pump truck is minimal, thereby effectively reducing the length space occupied by the
short boom 1.
[0035] Apparently, the length of the short boom 1 should satisfy the condition that there
should be no interference between the folded short boom 1 and the ground or other
parts of the concrete pump truck when the short boom 1 is folded.
[0036] The angle between the unfolded short boom 1 and the axial extended line of the endmost
boom is less than or equal to 45°, which means that the short boom 1 may be located
on either side of two sides of the endmost boom and form an angle which is less than
or equal to 45° with respect to the axial extended line of the endmost boom. Accordingly,
the angle between the folded short boom 1 and the vertical plane is less than or equal
to 45°, which means that the short boom 1 may be located on either side of two sides
of the vertical plane and form an angle which is less than or equal to 45° with respect
to the vertical plane.
[0037] The connection between the above booms can be a hinged connection via the hinged
shaft in the vertical plane or a hinged connection via the hinged shaft in the horizontal
plane. Of course, other foldable connection methods can also be used to realize the
connection between adjacent booms. A driving member is mounted between adjacent booms
so as to drive any one of the booms to rotate relative to the adjacent boom. The driving
member may be an oil cylinder or an oil cylinder and connecting rod assembly, and
may also adopt other regular driving means in the art.
[0038] The above booms and the short boom 1 may be of hollow steel frame structure. Since
the boom device will experience great impact force during operation, the material
of the booms and the short boom 1 should have enough rigidity and strength to ensure
the working reliability. Apparently, the material of the booms and the short boom
1 is not limited to steel material, can also be other regular metal materials in the
art; the booms and the short boom 1 are also not limited to the hollow structure,
can also be solid steel parts or trusses, and etc.
[0039] The first hinged shaft 2 will experience a load during the operation of the boom
device, thus the first hinged shaft 2 should have enough strength and rigidity to
ensure a high reliability of the boom device during operation.
[0040] In detail, a pin shaft may be used to realize the connection between every two adjacent
booms and between the endmost boom and the short boom 1.
[0041] Apparently, the booms and the short boom 1 are all installed thereon with a concrete
conveying pipe through which mixed concrete is conveyed to a desired working location.
The conveying pipe may be a flexible pipe made of abrasion resistant materials. During
the operation of the concrete pump truck, concrete is continuously conveyed to the
specific location through the conveying pipe, which will seriously abrade the inner
wall of the conveying pipe. The conveying pipe made of abrasion resistant material
has long service life, thereby saving the maintenance cost of the boom device.
[0042] The abrasion resistant materials may be rubber material, which has low cost and stable
working performance. Of course, the abrasion resistant materials are not limited to
rubber. Any abrasion resistant materials with certain degree of flexibility and being
capable of bending to some extent can be adopted as the material of the conveying
pipe.
[0043] The conveying pipe may be of integral structure, i.e. the conveying pipe installed
on the booms is the same conveying pipe with a large length instead of multiple conveying
pipes connected by joints, thereby avoiding the problem that the conveying pipes may
be disjointed during the operation and further improving the working reliability of
the boom device.
[0044] When the boom device is in a working state, by means of the first driving member
between the short boom 1 and the endmost boom, the short boom 1 is activated to rotate
around the first hinged shaft 2 in a direction away from the endmost boom, at this
moment, an angle less than or equal to 45° is formed between the short boom 1 and
the axial extended line of the endmost boom. Therefore, the total length of the prior
boom device is increased by an extended length of the short boom. When the boom device
is required to be transferred or shifted, the short boom is driven by the first driving
member to rotate around the first hinged shaft 2 in a direction approaching to the
endmost boom, such that the short boom 1 is located below the endmost boom and the
angle between the axis of the short boom 1 and the vertical plane is less than or
equal to 45°, thereby reducing the height and length of the folded boom device effectively
and further realizing the object to effectively increase the total length of the boom
while the length and height thereof meet the transportation requirements.
[0045] The boom device may specifically include a first boom 31, a second boom 32, a third
boom 33, a third boom 34 and a fifth boom 35 which are hinged with each other in this
order. An distal end of the fifth boom 35 is hinged with the short boom 1 via the
first hinged shaft 2. Here, the above mentioned endmost boom may be the fifth boom
35, and all structural properties of the above mentioned endmost boom are applicable
to the fifth boom 35. Since this boom device includes five booms, the total length
of the boom is basically in a limited state. In this state, the short boom 1 is hinged
with the distal end of the fifth boom 35 via the first hinged shaft 2, thereby further
increasing the total extended length of the boom device which has a great practical
significance.
[0046] Apparently, the boom device according to the present application is not limited to
include five booms. According to the operating requirement during the practical work
and the technical level of manufacturing, the number of the boom can be less than
five segments. The number of the boom in the boom device should not be limited in
this present application.
[0047] Referring to Figs. 4-7, Fig. 4 is the partial schematic view of the boom device of
the concrete pump truck according to one embodiment of the present application when
the boom device is unfolded. Fig. 5 is the enlarged schematic view of part A in Fig.
4. Fig. 6 is the partial schematic view of the boom device of the concrete pump truck
according to one embodiment of the present application when the boom device is folded.
Figure 7 is the enlarged schematic view of part B in Fig. 6.
[0048] In another embodiment, taking the boom device with five booms as an example, the
first driving member is a telescopic oil cylinder 4 mounted between the fifth boom
35 and the short boom 1. As a regular drive device in the art, the oil cylinder has
a stable power output and a low cost.
[0049] One end of the telescopic oil cylinder 4 is hinged with the fifth boom 35 and the
other end thereof is hinged with the short boom 1. When a cylinder rod 42 of the telescopic
oil cylinder 4 extends from a cylinder tube 41, the short boom 1 is driven to be unfolded
relative to the fifth boom 35. Since two ends of the telescopic oil cylinder 4 are
hinged with the short boom 1 or the fifth boom 35, in the unfolding process of the
short boom 1, the telescopic oil cylinder 4 may rotate relative to the short boom
1 and the fifth boom 35. In this way, when the cylinder rod 42 of the telescopic oil
cylinder 4 extends to a certain position, the axis of the short boom 1 may form an
angle of 180° with respect to the axis of the fifth boom 35, and at this moment the
short boom 1 is fully unfolded to the largest working length which further increases
the effective total length of the boom device. When the cylinder rod 42 of the telescopic
oil cylinder 4 retracts back to the cylinder tube 41, due to the hinged connection
of two ends of the telescopic oil cylinder 4, i.e. two ends thereof may rotate in
a certain angle range, when the telescopic oil cylinder 4 retracts to a certain position,
the axis of the short boom 1 may substantially lie in the vertical plane so as to
reduce the total length of the folded boom device most efficiently when the short
boom 1 is folded.
[0050] The telescopic oil cylinder 4 may hinged with the short boom 1 via the cylinder rod
42 and hinged with the fifth boom 35 via the cylinder tube 41; or may hinged with
the fifth boom 35 via the cylinder rod 42 and hinged with the short boom 1 via the
cylinder tube 41.
[0051] The cylinder rod 42 and the cylinder tube 41 of the telescopic oil cylinder 4 may
be hinged with the short boom 1 and the fifth boom 35 respectively via hinged supports
5 mounted on the short boom 1 and the fifth boom 35 so as to improve the assembling
reliability and simplify the assembling process.
[0052] The telescopic oil cylinder 4 may be hinged with the short boom 1 and the fifth boom
35 via a link mechanism. In detail, the link mechanism may include a first connecting
rod and a second connecting rod. One end of the first connecting rod is hinged with
the short boom 1, and the other end thereof is hinged with one end of the second connecting
rod. The other end of the second connecting rod is hinged with the fifth boom 35.
[0053] The short boom 1 rotates relative to the fifth boom 35 under the combined action
of the telescopic oil cylinder 4 and the link mechanism. Owing to the stable power
transmission of the link mechanism and the larger power transmitted by the telescopic
oil cylinder 4, the working reliability of the boom device is ensured. The driving
member may further include a hydraulic motor. An output shaft of the hydraulic motor
is connected with the first hinged shaft 2 via a coupling, and the first hinged shaft
2 is fixed to the short boom 1. When the hydraulic motor is working, the output shaft
thereof transmits power to the first hinged shaft 2 via the coupling and then drives
the short boom 1 to rotate via the first hinged shaft 2. This structure is more compact
and occupies small space.
[0054] The boom device according to the present application may further include a positioning
member mounted between the fifth boom 35 and the short boom 1 so as to selectively
fix the relative position between the short boom 1 and the fifth boom 35.
[0055] The positioning member is not limited to be mounted between the fifth boom 35 and
the short boom 1, theoretically may also be mounted on a proper position on the fifth
boom 35 or a proper position on the short boom 1.
[0056] Further improvement may be made to the boom device according to the present application.
[0057] In another embodiment, the short boom 1 according to the present application may
further include a first short boom and a second short boom. One end of the first short
boom is hinged with the fifth boom 35 via the first hinged shaft 2 and a second end
thereof is hinged with the second short boom via a second hinged shaft substantially
paralleled to the first hinged shaft 2. The first driving member is mounted between
the first short boom and the endmost boom to drive the first short boom to rotate
downwards around the first hinged shaft 2. A second driving member is mounted between
the first short boom and the second short boom to drive the second short boom to rotate
upwards around the second hinged shaft relative to the first short boom.
[0058] Apparently, when the first short boom and the second short boom are folded, the first
short boom and the second short boom are both located below the endmost boom.
[0059] The short boom is designed as two parts which are rotatably hinged with each other,
thereby further increasing the effective total length of the boom device while it
is ensured that the folded height thereof meets the requirements.
[0060] Theoretically, provided that the height and length of the folded boom device meet
the requirements, the short boom 1 may also include multiple segments hinged with
each other.
[0061] The second driving member may be an oil cylinder with two ends hinged with the first
short boom and the second short boom respectively. Apparently, the second driving
member is not limited to be the oil cylinder, the concrete form of the second driving
member should not be limited in the present description as long as it can enable the
second short boom to rotate relative to the first short boom.
[0062] Besides the above boom device, the present application further provides a concrete
pump truck including the above boom device. Regarding structure of other parts of
the concrete pump truck, please refer to the prior art, which will not be described
herein.
[0063] The concrete pump truck and the boom device thereof according to the present application
are described in detail hereinbefore. In the present description, specific examples
are used to describe the principle and the embodiments of the present application.
The above description of the embodiments is only used for better understanding of
the method and the spirit of the present application, it should be noted that, for
the person skilled in the art, any modifications and improvements may be made to the
present application without departing from the principle of the present application,
and these modifications and improvements should be deemed to fall into the protection
scope of the present application.
1. A boom device for a concrete pump truck, comprising multiple booms hinged with one
another, any one of the multiple booms being operable to rotate relative to an adjacent
boom under the action of a driving member, characterized in that,
the boom device further comprises at least one short boom (1), the short boom (1)
is hinged with a distal end of an endmost boom of the multiple booms via a first hinged
shaft (2), and a first driving member is mounted between the short boom (1) and the
endmost boom; the short boom (1) is operable to rotate around the first hinged shaft
(2) relative to the endmost boom under the action of the first driving member, so
that when the short boom (1) is folded, the short boom (1) is located below the endmost
boom and an angle between an axis of the short boom (1) and the vertical plane is
less than or equal to 45°.
2. The boom device for the concrete pump truck according to claim 1, wherein when the
short boom is unfolded, an angle between the axis of the short boom and an axial extended
line of the endmost boom is less than or equal to 45°.
3. The boom device for the concrete pump truck according to claim 2, wherein, when the
short boom (1) is folded, the short boom (1) is located in a rear portion of the concrete
pump truck in a vertical direction.
4. The boom device for the concrete pump truck according to any one of claims 1-3, wherein,
the first driving member is a telescopic oil cylinder (4) mounted between the endmost
boom and the short boom (1).
5. The boom device for the concrete pump truck according to claim 4, wherein, one end
of the telescopic oil cylinder (4) is hinged with the endmost boom and the other end
thereof is hinged with the short boom (1).
6. The boom device for the concrete pump truck according to claim 5, wherein, two ends
of the telescopic oil cylinder (4) are hinged with the endmost boom and the short
boom (1) respectively via a hinged support (5).
7. The boom device for the concrete pump truck according to any one of claims 1-3, wherein,
the first driving member comprises a telescopic oil cylinder (4), a first connecting
rod and a second connecting rod, first ends of the first and the second connecting
rods are hinged with the endmost boom and the short boom (1) respectively; a second
end of the first connecting rod is hinged with a second end of the second connecting
rod, one end of the telescopic oil cylinder (4) is fixed to the endmost boom or the
short boom (1) and the other end thereof is fixedly connected with the first connecting
rod or the second connecting rod.
8. The boom device for the concrete pump truck according to any one of claims 1-3, wherein,
the boom device further comprises a positioning member, the positioning member is
mounted between the endmost boom and the short boom (1) so as to selectively fix the
position of the short boom (1) relative to the endmost boom.
9. The boom device for the concrete pump truck according to any one of claims 1-3, wherein,
the short boom (1) comprises a first short boom and a second short boom, one end of
the first short boom is hinged with the endmost boom via the first hinged shaft (2)
and a second end thereof is hinged with the second short boom via a second hinged
shaft parallel to the first hinged shaft (2); the first driving member is mounted
between the first short boom and the endmost boom and is operable to drive the first
short boom to rotate downwards around the first hinged shaft (2) relative to the endmost
boom, a second driving member is mounted between the first short boom and the second
short boom and is operable to drive the second short boom to rotate upwards around
the second hinged shaft relative to the first short boom.
10. A concrete pump truck characterized by comprising the boom device according to any one of claims 1-9.
1. Eine Auslegervorrichtung für einen Betonpumpenlastkraftwagen, aufweisend eine Vielzahl
von Auslegern, welche aneinander drehbar angebracht sind, wobei jeder einzelne der
Vielzahl von Auslegern betriebsfähig ist, sich bezogen auf einen benachbarten Ausleger
unter der Einwirkung eines Antriebselements zu drehen, dadurch gekennzeichnet, dass
die Auslegervorrichtung weiter zumindest einen kurzen Ausleger (1) aufweist, wobei
der kurze Ausleger (1) über eine erste Gelenkachse (2) an einem entfernten Ende eines
letzten Auslegers der Vielzahl von Auslegern drehbar angebracht ist, und wobei ein
erstes Antriebselement zwischen dem kurzen Ausleger (1) und dem letzten Ausleger angebracht
ist; der kurze Ausleger (1) ist betriebsfähig, sich unter der Einwirkung des ersten
Antriebselements um die erste Gelenkachse (2) bezogen auf den letzten Ausleger zu
drehen, so dass, wenn der kurze Ausleger (1) gefaltet ist, der kurze Ausleger (1)
unterhalb dem letzten Ausleger angeordnet ist und ein Winkel zwischen einer Achse
des kurzen Auslegers (1) und der vertikalen Ebene geringer als oder gleich 45° ist.
2. Die Auslegervorrichtung für den Betonpumpenlastkraftwagen nach Anspruch 1, wobei,
wenn der kurze Ausleger entfaltet ist, ein Winkel zwischen der Achse des kurzen Auslegers
und einer axial verlängerten Linie des letzten Auslegers weniger als oder gleich 45°
ist.
3. Die Auslegervorrichtung für den Betonpumpenlastkraftwagen nach Anspruch 2, wobei,
wenn der kurze Ausleger (1) gefaltet ist, der kurze Ausleger (1) in einem rückwärtigen
Abschnitt des Betonpumpenlastkraftwagens in einer vertikalen Richtung angeordnet ist.
4. Die Auslegervorrichtung für den Betonpumpenlastkraftwagen nach einem der Ansprüche
1 - 3, wobei das erste Antriebselement ein teleskopischer Ölzylinder (4) ist, welcher
zwischen dem letzten Ausleger und dem kurzen Ausleger (1) angebracht ist.
5. Die Auslegervorrichtung für den Betonpumpenlastkraftwagen nach Anspruch 4, wobei ein
Ende des teleskopischen Ölzylinders (4) drehbar an dem letzten Ausleger angebracht
ist und das andere Ende davon an dem kurzen Ausleger (1) drehbar angebracht ist.
6. Die Auslegervorrichtung für den Betonpumpenlastkraftwagen nach Anspruch 5, wobei zwei
Enden des teleskopischen Ölzylinders (4) über einen drehbar angebrachten Halter (5)
an dem letzten Ausleger bzw. dem kurzen Ausleger (1) drehbar angebracht sind.
7. Die Auslegervorrichtung für den Betonpumpenlastkraftwagen nach einem der Ansprüche
1 - 3, wobei das erste Antriebselement einen teleskopischen Ölzylinder (4), eine erste
Verbindungsstange und eine zweite Verbindungsstange aufweist, wobei erste Enden der
ersten und der zweiten Verbindungsstange an dem letzten Ausleger bzw. dem kurzen Ausleger
(1) drehbar angebracht sind; ein zweites Ende der ersten Verbindungsstange ist drehbar
an einem zweiten Ende der zweiten Verbindungsstange angebracht, wobei ein Ende des
teleskopischen Ölzylinders (4) an dem letzten Ausleger oder an dem kurzen Ausleger
(1) befestigt ist und das andere Ende davon starr mit der ersten Verbindungsstange
oder der zweiten Verbindungsstange verbunden ist.
8. Die Auslegervorrichtung für den Betonpumpenlastkraftwagen nach einem der Ansprüche
1 - 3, wobei die Auslegervorrichtung weiter ein Positionierungselement aufweist, wobei
das Positionierungselement zwischen dem letzten Ausleger und dem kurzen Ausleger (1)
so angebracht ist, dass die Position des kurzen Auslegers (1) bezogen auf den letzten
Ausleger wahlweise festgelegt werden kann.
9. Die Auslegervorrichtung für den Betonpumpenlastkraftwagen nach einem der Ansprüche
1 - 3, wobei der kurze Ausleger (1) einen ersten kurzen Ausleger und einen zweiten
kurzen Ausleger aufweist, wobei ein Ende des ersten kurzen Auslegers drehbar an dem
letzten Ausleger über die erste Gelenkachse (2) angebracht ist und ein zweites Ende
davon über eine zweite Gelenkachse parallel zu der ersten Gelenkachse (2) drehbar
an dem zweiten kurzen Ausleger angebracht ist; das erste Antriebselement ist zwischen
dem ersten kurzen Ausleger und dem letzten Ausleger angebracht und ist betriebsfähig,
den ersten kurzen Ausleger anzutreiben sich bezogen auf den letzten Ausleger abwärts
um die erste Gelenkachse (2) zu drehen, ein zweites Antriebselement ist zwischen dem
ersten kurzen Ausleger und dem zweiten kurzen Ausleger angebracht und ist betriebsfähig,
den zweiten kurzen Ausleger anzutreiben sich bezogen auf den ersten kurzen Ausleger
aufwärts um die zweite Gelenkachse zu drehen.
10. Ein Betonpumpenlastkraftwagen dadurch gekennzeichnet, dass es die Auslegervorrichtung nach einem der Ansprüche 1 - 9 aufweist.
1. Dispositif de flèche pour un camion à pompe à béton, comprenant de multiples flèches
articulées entre elles, l'une des multiples flèches pouvant fonctionner de façon à
tourner par rapport à une flèche adjacente sous l'action d'un organe d'entraînement,
caractérisé en ce que,
le dispositif de flèche comprend en outre au moins une flèche courte (1), la flèche
courte (1) est articulée avec une extrémité distale d'une flèche d'extrémité des multiples
flèches par l'intermédiaire d'un premier arbre articulé (2), et un premier organe
d'entraînement est monté entre la flèche courte (1) et la flèche d'extrémité, la flèche
courte (1) peut fonctionner de façon à tourner autour du premier arbre articulé (2)
par rapport à la flèche d'extrémité sous l'action du premier organe d'entraînement,
de sorte que lorsque la flèche courte (1) est pliée, la flèche courte (1) est située
au-dessous de la flèche d'extrémité et un angle entre un axe de la flèche courte (1)
et le plan vertical est inférieur ou égal à 45°.
2. Dispositif de flèche pour le camion à pompe à béton selon la revendication 1, dans
lequel, lorsque la flèche courte est dépliée, un angle entre l'axe de la flèche courte
et une ligne axiale étendue de la flèche d'extrémité est inférieur ou égal à 45°.
3. Dispositif de flèche pour le camion à pompe à béton selon la revendication 2, dans
lequel, lorsque la flèche courte (1) est pliée, la flèche courte (1) est située dans
une partie arrière du camion à pompe à béton dans une direction verticale.
4. Dispositif de flèche pour le camion à pompe à béton selon l'une quelconque des revendications
1 à 3, dans lequel, le premier organe d'entraînement est un cylindre d'huile télescopique
(4) monté entre la flèche d'extrémité et la flèche courte (1).
5. Dispositif de flèche pour le camion à pompe à béton selon la revendication 4, dans
lequel, une extrémité du cylindre d'huile télescopique (4) est articulée avec la flèche
d'extrémité et l'autre extrémité de celui-ci est articulée avec la flèche courte (1).
6. Dispositif de flèche pour le camion à pompe à béton selon la revendication 5, dans
lequel, deux extrémités du cylindre d'huile télescopique (4) sont articulées avec
la flèche d'extrémité et la flèche courte (1) respectivement par l'intermédiaire d'un
support articulé (5).
7. Dispositif de flèche pour le camion à pompe à béton selon l'une quelconque des revendications
1 à 3, dans lequel, le premier organe d'entraînement comprend un cylindre d'huile
télescopique (4), une première bielle et une seconde bielle, les premières extrémités
de la première et de la seconde bielle sont articulées avec la flèche d'extrémité
et la flèche courte (1), respectivement, une seconde extrémité de la première bielle
est articulée avec une seconde extrémité de la seconde bielle, une extrémité du cylindre
d'huile télescopique (4) est fixée à la flèche d'extrémité ou à la flèche courte (1)
et l'autre extrémité de celui-ci est reliée de manière fixe à la première bielle ou
à la seconde bielle.
8. Dispositif de flèche pour le camion à pompe à béton selon l'une quelconque des revendications
1 à 3, dans lequel, le dispositif de flèche comprend en outre un élément de positionnement,
l'élément de positionnement est monté entre la flèche d'extrémité et la flèche courte
(1) de manière à fixer de manière sélective la position de la flèche courte (1) par
rapport à la flèche d'extrémité.
9. Dispositif de flèche pour le camion à pompe à béton selon l'une quelconque des revendications
1 à 3, dans lequel, la flèche courte (1) comprend une première flèche courte et une
seconde flèche courte, une extrémité de la première flèche courte est articulée avec
la flèche d'extrémité par l'intermédiaire du premier arbre articulé (2) et une seconde
extrémité de celle-ci est articulée avec la seconde flèche courte par l'intermédiaire
d'un second arbre articulé parallèle au premier arbre articulé (2), le premier organe
d'entraînement est monté entre la première flèche courte et la flèche d'extrémité
et peut fonctionner de façon à entraîner la première flèche courte à tourner vers
le bas autour du premier arbre articulé (2) par rapport à la flèche d'extrémité, un
second organe d'entraînement est monté entre la première flèche courte et la seconde
flèche courte et peut fonctionner pour entraîner la seconde flèche courte à tourner
vers le haut autour du second arbre articulé par rapport à la première flèche courte.
10. Camion à pompe à béton, caractérisé en ce qu'il comprend le dispositif de flèche selon l'une quelconque des revendications 1 à
9.