Technical Field
[0001] The present invention relates to a traction-type elevator apparatus having such a
structure that a car and a counterweight are suspended in a hoistway by a main rope.
Background Art
[0002] For example,
JP 7-10434 A discloses a conventional machine room less elevator apparatus having such a structure
that a car and a counterweight are suspended in a hoistway by a 2:1 roping system.
In such an elevator apparatus, it is necessary to provide the car and the counterweight
with sash pulleys, resulting in a complicated construction and high cost. Further,
due to the 2:1 roping system, the RPM of a drive sheave is high, which means there
is a fear of an increase in the vibration and noise.
[0003] Further,
JP 11-310372 A discloses a conventional machine room less elevator apparatus constructed such that
a car and a counterweight are suspended in a hoistway by a 1:1 roping system by two
lines of rope. As compared with adopting the 2 : 1 roping system, such an elevator
apparatus allows a reduction of the RPM of the drive sheave by half. However, since
the suspension load is doubled, it is necessary to increase the rigidity of the components,
such as a driving machine, guide rails, and a support beam, so that there is a fear
of an increase in cost and an increase in installation space.
[0004] Further,
JP 11-310372 A also discloses an elevator apparatus using two driving machines. Since it requires
two driving machines, an increase in cost and a complicated control operation are
involved.
[0005] Document
EP0905081 A2 discloses an elevator apparatus having two ropes which connect the counterweight
and the cabin, said ropes being respectively wrapped around two drive sheaves of the
same drive.
[0006] Document
DE112005000398 T5 discloses an elevator apparatus with a single rope with both ends connected to the
cabin and wrapped around a single drive sheave and a counterweight sash pulley. This
document has the priority date 19.02.2004 and was published on 01.02.2007.
Disclosure of the Invention
[0007] The present invention has been made to solve the above-mentioned problems. It is
an object of the present invention to provide an elevator apparatus which allows simplification
in construction and helps to avoid an increase in the RPM of a drive sheave while
restraining an increase in suspension load.
[0008] An elevator apparatus includes: a driving machine having a drive sheave; a car which
has a first rope connecting portion provided on one side with respect to a width direction
and a second rope connecting portion provided on the other side with respect to the
width direction and which is caused to ascend and descend in a hoistway by the driving
machine; a counterweight caused to ascend and descend in the hoistway by the driving
machine; a first main rope which has a first end portion connected to the first rope
connecting portion and a second end portion connected to the counterweight and which
suspends the car and the counterweight in the hoistway; and a second main rope which
has a third end portion connected to the second rope connecting portion and a fourth
end portion connected to the counterweight and which suspends the car and the counterweight
in the hoistway, in which only the first main rope of the first and second main ropes
is wrapped around the drive sheave, and in which, provided in the upper portion of
the hoistway is a main rope return pulley around which only the second main rope of
the first and second main ropes is wrapped.
[0009] Further, an elevator apparatus according to the present invention includes: driving
machine having a drive sheave; a car and a counterweight that are caused to ascend
and descend in a hoistway by the driving machine; and a main rope wrapped around the
drive sheave and suspending the car and the counterweight in the hoistway, in which
the car has a first rope connecting portion provided on one side thereof with respect
to a width direction and a second rope connecting portion provided on the other side
thereof with respect to the width direction, in which the main rope has a first end
portion connected to the first rope connecting portion and a second end portion connected
to the second rope connecting portion, in which, provided in the upper portion of
the hoistway is a second end portion side return pulley around which the main rope
is wrapped, in which the counterweight is provided with a rotatable counterweight
sash pulley, and in which the main rope is wrapped successively, starting from the
first end portion side, around the drive sheave, the counterweight sash pulley, and
the second end portion side return pulley.
Brief Description of the Drawings
[0010]
Fig. 1 is a perspective view of a main portion of an elevator apparatus according
to Embodiment 1 which is not part of the present invention;
Fig. 2 is a plan view of the elevator apparatus of Fig. 1;
Fig. 3 is a perspective view of a main portion of an elevator apparatus according
to Embodiment 2 which is not part of the present invention;
Fig. 4 is a plan view of the elevator apparatus of Fig. 3;
Fig. 5 is a perspective view of a main portion of an elevator apparatus according
to Embodiment 3 which is not part of the present invention;
Fig. 6 is a plan view of the elevator apparatus of Fig. 5;
Fig. 7 is a plan view of a main portion of an elevator apparatus according to Embodiment
4 which is not part of the present invention; and
Fig. 8 is a perspective view of a main portion of an elevator apparatus according
to Embodiment 5 which is part of the present invention.
Best Mode for carrying out the Invention
[0011] In the following, the embodiments will be described with reference to the drawings.
Embodiment 1
[0012] Fig. 1 is a perspective view of a main portion of an elevator apparatus according
to Embodiment 1 which is not part of the present invention, and Fig. 2 is a plan view
of the elevator apparatus of Fig. 1.
[0013] In the drawings, installed in a hoistway 1 are a pair of car guide rails 2 (omitted
in Fig. 1) and a pair of counterweight guide rails 3. A car 4 is guided by the car
guide rails 2 as it ascends and descends in the hoistway 1. Further, the car 4 has
a front surface 4a, a back surface 4b, a first side surface 4c, and a second side
surface 4d. A car entrance 4e is provided in the front surface 4a.
[0014] A counterweight 5 is guided by the counterweight guide rails 3 as it ascends and
descends in the hoistway 1. The counterweight 5 is arranged at the rear of the car
4 so that it faces the back surface 4b of the car 4 when it is positioned at the same
height as the car 4. As seen in a plane of vertical projection (Fig. 2), a straight
line connecting between the car guide rails 2 is parallel to a straight line connecting
between counterweight guide rails 3.
[0015] A first rope connecting portion 6 is provided on one side (the first side surface
4c side) of the car 4 with respect to the width direction thereof. A second rope connecting
portion 7 is provided on the other side (the second side surface 4d side) of the car
4 with respect to the width direction thereof. The first and second rope connecting
portions 6, 7 are provided at the lower end portion of the car 4.
[0016] In the upper portion of the hoistway 1, there is installed a driving machine (hoisting
machine) 8 for raising and lowering the car 4 and the counterweight 5. The driving
machine 8 is supported by the upper portion of at least one of the guide rails 2,
3 or a support beam (not shown) fixed to the building side.
[0017] The driving machine 8 has a driving machine main body 9 including a motor and a brake,
and a drive sheave 10 rotated by the driving machine main body 9. As the driving machine
8, there is used a thin-type hoisting machine having an axial dimension smaller than
an outer dimension thereof in a direction perpendicular to the axial direction. As
the motor of the thin-type hoist, there is used, for example, a permanent magnet type
motor (PM motor).
[0018] The driving machine 8 is arranged such that the rotation axis of the drive sheave
10 is parallel to the width direction of the car 4 and is horizontal. Further, the
driving machine 8 is arranged such that, as seen in the plane of vertical projection,
the driving machine main body 9 is situated on the car 4 side, and that the drive
sheave 10 is situated on a hoistway wall 1a side.
[0019] In the upper portion of the hoistway 1, there are provided a rotatable, first deflection
wheel 11, a rotatable, second main rope return pulley 12, and a rotatable, second
deflection wheel 13. The first deflection wheel 11, the secondmain rope return pulley
12, and the second deflection wheel 13 are supported by the support beam. The first
deflection wheel 11, the second main rope return pulley 12, and the second deflection
wheel 13 are arranged such that their rotation axes are parallel to the rotation axis
of the drive sheave 10.
[0020] As seen in the plane of vertical projection, the driving machine 8 and the first
deflection wheel 11 are arranged between the first side surface 4c of the car 4 and
the hoistway wall 1a opposed to the first side surface 4c. As seen in the plane of
vertical projection, the second main rope return pulley 12 and the second deflection
wheel 13 are arranged between the second side surface 4d of the car 4 and a hoistway
wall 1b opposed to the second side surface 4d.
[0021] Further, as seen in the plane of vertical projection, the drive sheave 10 and the
first deflection wheel 11, and the second main rope return pulley 12 and the second
deflection wheel 13, are arranged substantially symmetrically with respect to the
center line of the car 4 with respect to the width direction thereof.
[0022] A plurality of first main ropes (driving ropes) 14 are wrapped around the drive sheave
10 and the first deflection wheel 11. Each of the first main ropes 14 has a first
end portion 14a connected to the first rope connecting portion 6 and a second end
portion 14b connected to the counterweight 5. The second end portion 14b is connected
to the upper portion of one end portion of the counterweight 5 with respect to the
width direction thereof.
[0023] A plurality of second main ropes (ropes dedicated to suspension) are wrapped around
the second main rope return pulley 12 and the second deflection wheel 13. Each of
the second main ropes 15 has a third end portion 15a connected to the second rope
connecting portion 7, and a fourth end portion 15b connected to the counterweight
5. The fourth end portion 15b is connected to the upper portion of the other end portion
of the counterweight 5 with respect to the width direction thereof.
[0024] The car 4 and the counterweight 5 are suspended in the hoistway 1 by the 1:1 roping
system by the first main ropes 14 and the second main ropes 15. The car 4 and the
counterweight 5 are caused to ascend and descend in the hoistway 1 by the driving
force of the driving machine 8 through the first main ropes 14.
[0025] In this elevator apparatus, there are used two lines of mutually independent main
ropes, that is, the first and second main ropes 14, 15. The first and second main
ropes 14, 15 are arranged without joining each other.
[0026] Of the first and second main ropes 14, 15, only the first main ropes 14 are wrapped
around the drive sheave 10. Of the first and second main ropes 14, 15, only the second
main ropes 15 are wrapped around the second main rope return pulley 12.
[0027] As the first and second main ropes 14, 15, there are used, for example, resin-coated
ropes. In the outer periphery of the resin-coated ropes, there are provided outer
layer covering members formed of a high-friction resin material. The outer layer covering
members are constructed of a high-friction resin material having a coefficient of
friction of 0.2 or more, for example, a polyurethane resin.
[0028] In this elevator apparatus having such a structure that the car 4 and the counterweight
5 are suspended by the 1:1 roping system, there is no need to mount sash pulleys on
the car 4 and the counterweight 5, thus achieving simplification in construction.
Further, the RPM of the drive sheave 10 can be reduced to 1/2 as compared with that
in the case of the 2:1 roping system.
[0029] Further, the main ropes are divided into the first and second main ropes 14, 15,
and only the first main ropes 14 are wrapped around the drive sheave 10, with only
the second main ropes 15 being wrapped around the second main rope return pulley 12,
whereby the suspension load is distributed, making it possible to keep the load applied
to the driving machine 8, the main ropes 14, 15, the guide rails 2, 3, the support
beam, etc. at a level equivalent to that in the case of the 2:1 roping system. As
a result, it is possible to keep the rigidity of the apparatus at a low level, thereby
restraining an increase in cost.
[0030] Further, there is provided only one driving machine 8, so that it is possible to
avoid an increase in cost and installation space for the driving machine 8.
[0031] Thus, in the elevator apparatus of Embodiment 1, it is possible to simplify the construction
and avoid an increase in the RPM of the drive sheave 10 while restraining an increase
in suspension load.
[0032] Further, since the first and second rope connecting portions 6, 7 are arranged on
either side of the car 4, it is possible to suspend the car 4 in a stable manner.
[0033] Further, by using resin-coated ropes as the first and second main ropes 14, 15, it
is possible to improve the traction capacity, making it possible to run the car 4
in a stable manner solely with the traction force on the first main ropes 14 side.
Further, since resin-coated ropes allow further enhancement in flexibility than simple
steel ropes, it is possible to diminish the diameter of the drive sheave 10 and the
diameter of the second main rope return pulley 12.
[0034] Furthermore, a thin-type hoisting machine is used as the driving machine 8, and the
driving machine 8 is arranged between the first side surface 4c and the hoistway wall
1a as seen in the plane of vertical projection, so that it is possible to achieve
a reduction in overhead dimension without increasing the planar dimension of the hoistway
1.
[0035] Further, since the first and second rope connecting portions 6, 7 are provided below
the upper end portion of the car 4, it is possible to secure the clearance between
the rope connecting portions 6, 7 and the driving machine 8 and the return pulley
12 that are situated above them, thereby making it possible to achieve a reduction
in overhead dimension.
Embodiment 2
[0036] Next, Fig. 3 is a perspective view of a main portion of an elevator apparatus according
to Embodiment 2 which is not part of the present invention, and Fig. 4 is a plan view
of the elevator apparatus of Fig. 3.
[0037] In the drawings, the driving machine 8 is arranged in the lower portion of the hoistway
1 (in the vicinity of the bottom portion thereof). The driving machine 8 is arranged
such that the rotation axis of the drive sheave 10 is parallel to the depth direction
of the car 4 and is horizontal. Further, the driving machine 8 is arranged between
the back surface 4b of the car 4 and a hoistway wall 1c opposed to the back surface
4b as seen in the plane of vertical projection. Furthermore, the driving machine 8
is arranged beside the car 5 as seen in the plane of vertical projection.
[0038] In the upper portion of the hoistway 1, there are arranged a pair of first main rope
return pulleys 21 and a pair of second main rope return pulleys 22. In Fig. 3, only
one of each pair of return pulleys 21, 22 is shown. The return pulleys 21, 22 are
arranged such that their rotation axes are parallel to the width direction of the
car 4 and are horizontal.
[0039] The return pulleys 21, 22 are arranged between the side surfaces 4c, 4d of the car
4 and the hoistway walls 1a, 1b as seen in the plane of vertical projection. Further,
the return pulley 21 and the return pulley 22 are arranged substantially symmetrically
with respect to the center line of the car 4 with respect to the width direction thereof.
[0040] Further, in the upper portion of the hoistway 1, there is arranged a counterweight
side return pulley 23. The counterweight side return pulley 23 is arranged such that
the rotation axis thereof is parallel to the depth direction of the car 4 and is horizontal.
Further, the counterweight side return pulley 23 is arranged between the back surface
4c of the car 4 and the hoistway wall 1c as seen in the plane of vertical projection.
Further, the counterweight side return pulley 23 is arranged between the drive sheave
10 and the counter weight 5 as seen in the plane of vertical projection.
[0041] The first main ropes 14 are successively wrapped, starting from the first end portion
14a side, around the first main rope return pulley 21, the drive sheave 10, and the
counterweight side return pulley 23. The second main ropes 15 are wrapped around the
second main rope return pulley 22.
[0042] The car 4 and the counterweight 5 are suspended by the 1:1 roping system in the hoistway
1 by the first main ropes 14 and the second main ropes 15. The car 4 and the counterweight
5 are caused to ascend and descend in the hoistway 1 through the first main ropes
14 by the driving force of the driving machine 8.
[0043] Of the first and second main ropes 14, 15, only the first main ropes 14 are wrapped
around the drive sheave 10. Of the first and second main ropes 14, 15, only the second
main ropes 15 are wrapped around the second main rope return pulley 22. Otherwise,
this embodiment is of the same construction as Embodiment 1.
[0044] In this way, even in the case where the driving machine 8 is arranged in the lower
portion of the hoistway 1, it is possible to achieve simplification in construction
and avoid an increase in the RPM of the drive sheave 10 while restraining an increase
in suspension load.
[0045] Further, since the driving machine 8 is arranged in the lower portion of the hoistway
1, it is possible to easily perform maintenance operation on the driving machine 8
from the pit (bottom portion) of the hoistway 1.
[0046] Further, since the return pulleys 21, 22, and 23 are arranged between the side surfaces
4c, 4d and the back surface 4b, and the hoistway walls 1a, 1b and 1c as seen in the
plane of vertical projection, it is possible to achieve a reduction in overhead dimension
without increasing the planar dimension of the hoistway 1.
Embodiment 3
[0047] Next, Fig. 5 is a perspective view of a main portion of an elevator apparatus according
to Embodiment 3 which is not part of the present invention, and Fig. 6 is a plan view
of the elevator apparatus of Fig. 5. In the drawings, the driving machine 8 is arranged
between the first side surface 4c of the car 4 and the hoistway wall 1a as seen in
the plane of vertical projection. Further, the driving machine 8 is arranged such
that the rotation axis of the drive sheave 10 is parallel to the width direction of
the car 4 and is horizontal.
[0048] The first and second rope connecting portions 6, 7 are arranged such that the straight
line connecting them to each other passes the center of gravity of the car 4 or near
the same as seen in the plane of vertical projection. That is, the first and second
rope connecting portions 6, 7 are arranged symmetrically with respect to the center
of gravity of the car 4 as seen in the plane of vertical projection.
[0049] Further, as seen in the plane of vertical projection, the straight line connecting
the first and second rope connecting portions 6, 7 crosses the straight line connecting
the car guide rails 2. That is, with respect to the depth direction of the car 4,
the first rope connecting portion 6 is arranged at the rear of the car guide rails
2, and the second rope connecting portion 7 is arranged in front of the car guide
rails 2.
[0050] Only one first main rope return pulley 21 is used. The distance between the secondmain
rope return pulleys 22 and the width dimension of the counterweight 5 are larger than
those in Embodiment 2. Otherwise, this embodiment is of the same construction as Embodiment
2.
[0051] In this way, even in the case where the driving machine 8 is arranged beside the
car 4, it is possible to achieve simplification in construction and avoid an increase
in the RPM of the drive sheave 10 while restraining an increase in suspension load.
[0052] Further, by suspending the car 4 substantially at the position of its center of gravity,
it is possible to cause the car 4 to ascend and descend in a stable manner.
Embodiment 4
[0053] Next, Fig. 7 is a plan view of a main portion of an elevator apparatus according
to Embodiment 4 which is not part of the present invention. This embodiment differs
from Embodiment 2 in the planar configuration of the car 4. Provided on the first
and second side surfaces 4c, 4d of the car 4 are inclined surfaces 4f, 4g that are
inclined so as to gradually diminish the width dimension as they extend rearwards
in the depth direction of the car 4. Thus, the planar configuration of the car 4 exhibits
a hexagonal configuration, with the rear corner portions thereof being beveled.
[0054] The first main rope return pulley 21 and the second main rope return pulley 22 are
arranged such that their rotation axes are inclined with respect to the width direction
of the car 4. That is, as seen in the plane of vertical projection, the rotation axes
of the return pulleys 21, 22 are substantially perpendicular to the inclined surfaces
4f, 4g. And, the return pulleys 21, 22 are arranged between the inclined surfaces
4f, 4g and the hoistway walls 1a, 1b as seen in the plane of vertical projection.
Otherwise, this embodiment is of the same construction as Embodiment 2.
[0055] Due to this construction, it is possible to diminish the admission angle of the main
ropes 14, 15 with respect to the return pulleys 21, 22, making it possible to cause
the car 4 and the counterweight 5 to ascend and descend smoothly and to increase the
service life of the main ropes 14, 15. Further, both the return pulleys 21, 22 can
be arranged right above the counterweight 5, making it possible to cause the counterweight
5 to ascend and descend smoothly. Further, it is also possible to achieve a reduction
in overhead dimension.
Embodiment 5
[0056] Next, Fig. 8 is a perspective view of a main portion of an elevator apparatus according
to Embodiment 5 which is part of the present invention. In the drawing, a rotatable
counterweight sash pulley 24 is provided on top of the counterweight 5. The car 4
and the counterweight 5 are suspended in the hoistway 1 by a plurality of main ropes
25. While in Embodiments 1 through 4 two lines of main ropes 14, 15 are used, in Embodiment
5, only one line of main ropes 25 is used. As the main ropes 25, it is possible to
use resin-coated ropes.
[0057] In the upper portion of the hoistway 1, there are provided a first end portion side
return pulley 26, a second end portion side return pulley 27, and a counterweight
side return pulley 28. The first and second end portion side return pulleys 26, 27
are arranged such that their rotation axes are parallel to the width direction of
the car 4 and are horizontal. Further, the return pulleys 26, 27 are arranged between
the side surfaces of the car 4 and hoistway walls as seen in the plane of vertical
projection. Further, the first end portion side return pulley 26 and the second end
portion side return pulley 27 are arranged substantially symmetrically with respect
to the center line of the car 4 with respect to the width direction thereof as seen
in the plane of vertical projection.
[0058] The counterweight side return pulley 28 is arranged such that the rotation axis thereof
is parallel to the depth direction of the car 4 and is horizontal. Further, the return
pulley 28 is arranged between the back surface of the car 4 and a hoistway wall as
seen in the plane of vertical projection. Further, the return pulley 28 is arranged
between the drive sheave 10 and the counterweight 5 as seen in the plane of vertical
projection.
[0059] The main ropes 25 have first end portions 25a connected to the first rope connecting
portion 6 (not shown in Fig. 8) and second end portions 25b connected to the second
rope connecting portion 7. Further, the main ropes 25 are wrapped successively, starting
from the first end portion 25a side, around the first end portion side return pulley
26, the drive sheave 10 (not shown in Fig. 8), the counterweight side return pulley
28, the counterweight sash pulley 24, and the second end portion side return pulley
27.
[0060] Embodiment 5 is substantially of the same construction as one obtained by modifying
Embodiment 2 such that the second end portions 14b and the fourth end portions 15b
are connected together and wrapped around the counterweight sash pulley 24. The car
4 and the counterweight 5 of Embodiment 5 are suspended in the hoistway 1 by the 1:1
roping system by the main ropes 25.
[0061] In this elevator apparatus also, it is possible to achieve simplification in construction
and to avoid an increase in the RPM of the drive sheave 10 while restraining an increase
in suspension load.
[0062] Further, due to the provision of the counterweight sash pulley 24, it is possible
to automatically absorb the imbalance of the tension of the main ropes 25 on either
side of the counterweight 5.
[0063] While in Embodiment 5 the counterweight sash pulley 24 is applied to the layout of
Embodiment 2, it is also possible to apply the counterweight sash pulley to the layout
of Embodiment 1, 3, or 4.
[0064] Further, while a thin-type hoisting machine is adopted in Embodiments 1 through 5
described above, the driving machine is not necessarily restricted to the thin-type
hoist.
1. An elevator apparatus comprising:
a driving machine (8) having a drive sheave (10);
a car (4) and a counterweight (5) that are caused to ascend and descend in a hoistway
(1) by the driving machine (8); and
a main rope (25) wrapped around the drive sheave (10) and suspending the car (4) and
the counterweight (5) in the hoistway (1),
characterized in that the car (4) has a first rope connecting portion (6) provided on one side thereof
with respect to a width direction and a second rope connecting portion (7) provided
on the other side thereof with respect to the width direction,
the main rope (25) has a first end portion (25a) connected to the first rope connecting
portion (6) and a second end portion (25b) connected to the second rope connecting
portion (7),
a second end portion side return pulley (27) is provided in the upper portion of the
hoistway (1), around which the main rope (25) is wrapped,
the counterweight (5) is provided with a rotatable counterweight sash pulley (24),
and
the main rope (25) is wrapped successively, starting from the first end portion (14a)
side, around the drive sheave (10), the counterweight sash pulley (24), and the second
end portion side return pulley (27).
2. An elevator apparatus according to Claim 1, wherein the main ropes (14, 15 and 25)
are resin-coated ropes provided with outer layer covering members formed of a high
friction resin material positioned in outer peripheral portions thereof.
3. An elevator apparatus according to Claim 1, wherein the driving machine (8) is a thin-type
hoisting machine which has an axial dimension smaller than a dimension thereof in
a direction perpendicular to the axial direction and which is arranged between the
car (4) and hoistway walls (1a, 1b and 1c) as seen in a plane of vertical projection.
4. An elevator apparatus according to Claim 1, wherein the driving machine (8) is arranged
in a lower portion of the hoistway (1).
5. An elevator apparatus according to Claim 1, wherein the first and second rope connecting
portions (6 and 7) are provided below an upper end portion of the car (4).
6. An elevator apparatus according to Claim 1, wherein the first and second rope connecting
portions (6 and 7) are arranged symmetrically with respect to the center of gravity
of the car (4) as seen in a plane of vertical projection.
7. An elevator apparatus according to Claim 1, wherein provided on side surfaces (4a,
4b) of the car (4) are inclined surfaces (4f,4g) inclined such that the width dimension
of the car 4 is gradually diminished rearwards in the depth direction thereof, and
rotation axes of the return pulleys (22, 27) are substantially perpendicular to the
inclined surfaces (4f, 4g) as seen in a plane of vertical projection.
1. Aufzugvorrichtung, aufweisend:
eine Antriebsmaschine (8) mit einer Antriebsscheibe (10),
eine Kabine (4) und ein Gegengewicht (5), die durch die Antriebsmaschine (8) in einem
Schacht (1) angehoben und abgesenkt werden, und
ein Hauptseil (25), das um die Antriebsscheibe (10) gewunden ist und die Kabine (4)
und das Gegengewicht (5) im Schacht (1) aufhängt,
dadurch gekennzeichnet, dass die Kabine (4) einen an einer Seite hiervon bezüglich einer Breitenrichtung vorgesehenen
ersten Seilverbindungsabschnitt (6) und einen an der anderen Seite hiervon bezüglich
der Breitenrichtung vorgesehenen zweiten Seilverbindungsabschnitt (7) aufweist,
das Hauptseil (25) einen mit dem ersten Seilverbindungsabschnitt (6) verbundenen ersten
Endabschnitt (25a) und einen mit dem zweiten Seilverbindungsabschnitt (7) verbundenen
zweiten Endabschnitt (25b) aufweist,
eine Rückführrolle (27) an der Seite des zweiten Endabschnitts im oberen Abschnitt
des Schachts (1) vorgesehen ist, um die das Hauptseil (25) gewunden ist,
das Gegengewicht (5) mit einer drehbaren Gegengewichtsrahmenrolle (24) versehen ist,
und das Hauptseil (25) beginnend von der Seite des ersten Endabschnitts (14a), nacheinander
um die Antriebsscheibe (10), die Gegengewichtsrahmenrolle (24) und die Rückführrolle
(27) an der Seite des zweiten Endabschnitts gewunden ist.
2. Aufzugvorrichtung gemäß Anspruch 1, bei der die Hauptseile (14, 15 und 25) harzbeschichtete
Seile sind, die mit Außenlagenabdeckungselementen versehen sind, die aus einem Harzmaterial
mit hohem Reibwert ausgebildet sind, das in Außenumfangsabschnitten hiervon positioniert
ist.
3. Aufzugvorrichtung gemäß Anspruch 1, bei der die Antriebsmaschine (8) eine dünne Hebemaschine
ist, die eine kleinere Axialdimension aufweist als eine Dimension hiervon in einer
zur Axialrichtung senkrechten Richtung, und die in einer vertikalen Projektionsebene
betrachtet zwischen der Kabine (4) und den Schachtwänden (1a, 1b und 1c) angeordnet
ist.
4. Aufzugvorrichtung gemäß Anspruch 1, bei der die Antriebsmaschine (8) in einem unteren
Abschnitt des Schachts (1) angeordnet ist.
5. Aufzugvorrichtung gemäß Anspruch 1, bei der der erste und der zweite Seilverbindungsabschnitt
(6 und 7) unterhalb eines oberen Endabschnitts der Kabine (4) vorgesehen sind.
6. Aufzugvorrichtung gemäß Anspruch 1, bei der der erste und der zweite Seilverbindungsabschnitt
(6 und 7) bezüglich der Schwerpunktsmitte der Kabine (4) in einer vertikalen Projektionsebene
betrachtet symmetrisch angeordnet sind.
7. Aufzugvorrichtung gemäß Anspruch 1, bei der an Seitenflächen (4a, 4b) der Kabine (4)
geneigte Flächen (4f, 4g) vorgesehen sind, die derart geneigt sind, dass eine Breitendimension
der Kabine (4) fortschreitend in der Tiefenrichtung hiervon nach hinten abnimmt, und
Drehachsen der Rückführrollen (22, 27) in einer vertikalen Projektionsebene betrachtet
im Wesentlichen senkrecht zu den geneigten Flächen (4f, 4g) sind.
1. Appareil formant ascenseur comprenant :
une machine d'entraînement (8) ayant une poulie d'entraînement (10) ;
une cabine (4) et un contrepoids (5) qui sont amenés à monter et à descendre dans
une cage d'ascenseur (1) par la machine d'entraînement (8) ; et
un câble principal (25) enroulé autour de la poulie d'entraînement (10) et suspendant
la cabine (4) et le contrepoids (5) dans la cage d'ascenseur (1),
caractérisé en ce que la cabine (4) a une première partie de connexion de câble (6) disposée sur un côté
de celle-ci par rapport à une direction de largeur et une seconde partie de connexion
de câble (7) disposée de l'autre côté de celle-ci par rapport à une direction de largeur,
le câble principal (25) a une première partie d'extrémité (25a) reliée à la première
partie de connexion de câble (6) et une seconde partie d'extrémité (25b) reliée à
la seconde partie de connexion de câble (7),
une poulie de retour côté seconde partie d'extrémité (27) est disposée dans la partie
supérieure de la cage d'ascenseur (1), autour de laquelle le câble principal (25)
est enroulé,
le contrepoids (5) est muni d'une poulie rotative de châssis de contrepoids (24),
et
le câble principal (25) est enroulé successivement, en partant du côté première partie
d'extrémité (14a), autour de la poulie d'entraînement (10), de la poulie de châssis
de contrepoids (24), et de la poulie de retour côté seconde partie d'extrémité (27).
2. Appareil formant ascenseur selon la revendication 1, dans lequel les câbles principaux
(14, 15 et 25) sont des câbles recouverts de résine munis d'éléments de couverture
de couche extérieure formés d'une matière de résine à friction élevée positionnés
dans des parties périphériques extérieures de ceux-ci.
3. Appareil formant ascenseur selon la revendication 1, dans lequel la machine d'entraînement
(8) est une machine de levage de type mince qui a une dimension axiale plus petite
qu'une dimension de celle-ci dans une direction perpendiculaire à la direction axiale
et qui est agencée entre la cabine (4) et des parois de cage d'ascenseur (1a, 1b et
1c) tels que vus dans un plan de projection verticale.
4. Appareil formant ascenseur selon la revendication 1, dans lequel la machine d'entraînement
(8) est agencée dans une partie inférieure de la cage d'ascenseur (1).
5. Appareil formant ascenseur selon la revendication 1, dans lequel les première et seconde
parties de connexion de câble (6 et 7) sont disposées dessous une partie d'extrémité
supérieure de la cabine (4).
6. Appareil formant ascenseur selon la revendication 1, dans lequel les première et seconde
parties de connexion de câble (6 et 7) sont agencées symétriquement par rapport au
centre de gravité de la cabine (4) lorsque l'on regarde dans un plan de projection
verticale.
7. Appareil formant ascenseur selon la revendication 1, dans lequel des surfaces inclinées
(4f, 4g) sont disposées sur des surfaces latérales (4a, 4b) de la cabine (4), inclinées
de sorte que la dimension en largeur de la cabine 4 est graduellement diminuée vers
l'arrière dans la direction de profondeur de celle-ci, et des axes de rotation des
poulies de retour (22, 27) sont sensiblement perpendiculaires aux surfaces inclinées
(4f, 4g) lorsque l'on regarde dans un plan de projection verticale.