WO2012172671A1

WO2012172671A1 - Elevator

Info

Publication number: WO2012172671A1
Application number: PCT/JP2011/063785
Authority: WO
Inventors: 泰裕金山; 重幸大菅; 克典西野
Original assignee: 株式会社日立製作所
Priority date: 2011-06-16
Filing date: 2011-06-16
Publication date: 2012-12-20
Also published as: CN103596869B; JPWO2012172671A1; CN103596869A; JP5681284B2

Abstract

Provided is a machine room-less elevator configured so that, even if the size of machine beams is reduced without increasing the size of an overhead portion above the machine beams, the strength of the machine beams is not reduced and a hoist brake section can be maintained easily. An elevator (1) is provided with: a hoist (8) for driving the car (5) moving vertically within the hoistway (2); and a support structure (24) for supporting the hoist (8). The support structure (24) has: a machine base (17) for supporting the hoist (8); machine beams (18) for supporting the machine base; vibration-proof support bases (12) for supporting ends of the machine beams (18); rope end beams (10, 11) which extend in the direction perpendicular to the machine beams (18), are supported by a building, and support the vibration-proof support bases (12); and upper support members (25) disposed at both ends of the machine base (17) or between the machine beams (18). The upper support members (25) are supported and affixed in such a manner that the upper support members (25) straddle the upper part of the hoist (8) from the upper surface side of both arm sections of the machine base (17).

Description

elevator

The present invention relates to a machine roomless elevator having no machine room at the top of a hoistway, and more particularly to an elevator in which a hoisting machine is installed in the hoistway.

For example, in a conventional machine room-less elevator, a elevator moving up and down in a hoistway, a hoist having a drive sheave disposed in the hoistway and a brake unit, and a car-side sheave provided at the top of a car And a hoisting rope which is wound around the hoisting machine and which suspends the car via the car-side sheave at one end, and a counterweight which is suspended at the other end of the hoisting rope.

In this elevator, since the car side sheave is disposed at the top of the car, the pit depth at the bottom of the hoistway is reduced. In addition, a worker can get on the upper part of the car to perform maintenance of the hoist and the sheave on the car side.

Further, for example, Patent Document 1 discloses an elevator capable of reducing the height of the space at the top of the hoistway, that is, the overhead portion for arranging a hoisting machine or the like in the above-mentioned elevator. According to Patent Document 1, as shown in FIG. 7, the support structure 63 of the hoisting machine 8 has a machine beam 30 for supporting the hoisting machine 8, a support beam 35 and a receiving beam 38. A vibration absorbing material 13 is provided between the receiving beam 38 and a part of the hoisting machine 8 is disposed at substantially the same height as the machine beam 30. Further, the reinforcing beam 62 passed between the pair of machine beams 30 is fixed to the upper surface of the beam body 41 of the machine beam 30 and is disposed in the vicinity of the drive sheave 14 of the hoisting machine 8. The machine beam 30 has a support 42 and a mount 43 formed on the side of the beam body 41, and supports the legs 15A of the hoisting machine 8. It is shown that the size of the overhead portion of the hoistway 12 can be reduced by the above support structure as compared with the case where the hoisting machine 8 is mounted on the upper side of the machine beam 30.

JP, 2009-137695, A

In the above-mentioned prior art, the overhead portion can be further reduced by directly supporting the machine beam 30 on the receiving beam 38, but conditions such as bending and twisting of the beam due to the hanging load (car weight, loading amount etc.) applied to the sheave The cross-sectional size of the machine beam 30 is increased and the reinforcement beams 62 are connected in consideration of the beam strength and the vibration isolation structure required to satisfy the requirements. Further, a special machine beam 30 in which an L-shaped support member is fixed to the side surface of the beam body 41 is used.

Furthermore, when the brake unit of the hoisting machine 8 is at the upper part of the hoisting machine, the operator can not reach the brake unit during maintenance work of the brake unit, so the structure of attaching the hoisting machine brake unit to the lower part is adopted. In this case, the size of the machine beam must be reduced so as not to interfere with the machine beam when disassembling the brake, but the beam itself suffers from intensity problems.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator capable of easily maintaining the brake portion without increasing the overhead portion and without any problem in strength even if the size of the machine beam is reduced.

According to the present invention, there is provided a hoisting machine having a drive sheave installed on a hoistway and driving a car through a rope and a brake unit, and a hoisting machine supported in the hoistway. In an elevator having a support structure, the support structure is mounted on the top of the hoist between the machine base supporting the hoist, a pair of machine beams supporting both ends of the machine base, and the pair of machine beams. At least one upper support member fixed to the machine beam directly or through the machine base, a beam extending in a direction perpendicular to the machine beam and supporting the machine beam and fixed to the hoistway, the machine beam and the beam And the anti-vibration support base provided between the two, and the hoisting machine is disposed at substantially the same height as the machine beam.

Further, in the elevator, the upper support member is characterized in that an arched plate member is vertically provided, and the support member is joined to the bottom.

Further, in the elevator, the machine base is configured to have a recess cross-sectional shape having a bottom portion supporting the hoist formed at the center portion and an upper arm portion engaged with the machine beam formed at both ends. It features.

Further, in the elevator, the brake unit is rotatably mounted at a lower portion of the hoist.

Further, in the elevator, a cross section of the machine beam is set to a beam size which does not interfere with the brake portion of the hoist.

In the elevator, the upper support member is characterized in that it is disposed in the vicinity of the drive sheave of the hoist.

In the elevator, the upper support member is characterized in that it is disposed in the vicinity of the brake of the hoist.

In addition, in the elevator, the pair of machine beams are characterized in that they are disposed below the upper arm of a machine base that supports the hoisting machine.

Also, in an elevator, the beam is characterized by being a rope end beam for fixing the rope end.

Further, in the elevator, the anti-vibration support stand is characterized in that it is configured to interpose an anti-vibration material.

According to the elevator according to the present invention, there is provided a hoisting machine having a driving sheave installed on the hoistway and driving the car through the rope and a braking part, and a hoisting machine installed in the hoistway. In an elevator having a support structure supported in a hoistway, the support structure is wound between a machine base directly supporting the hoisting machine, a pair of machine beams supporting both ends of the machine base, and a pair of machine beams. At least one upper support member which is fixed to the machine beam directly or through the machine base, and which extends in a direction perpendicular to the machine beam and which is supported by the machine beam and fixed to the hoistway. And the anti-vibration support base provided between the machine beam and the beam, and the hoisting machine is disposed at substantially the same height as the machine beam, Without increasing the Baheddo portion, strength in without problems even if the size of the machine beam is reduced, it is possible to provide the elevator can easily maintain the brake unit.

BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows 1st Embodiment of this invention elevator. BRIEF DESCRIPTION OF THE DRAWINGS The top view which shows 1st Embodiment of this invention elevator. BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the winding machine peripheral structure of 1st Embodiment of this invention elevator. BRIEF DESCRIPTION OF THE DRAWINGS The rear view which shows the winding machine peripheral structure of 1st Embodiment of this invention elevator. The rear view which shows the structure at the time of decomposition | disassembly of the brake part shown in FIG. 4 of this invention elevator. The top view which shows 2nd Embodiment of this invention elevator. The front view which shows the winding machine periphery structure of the conventional elevator.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each embodiment described below, the case where it applies to the so-called machine room less elevator which does not have a machine room at the top of a hoistway is explained to an example.
First Embodiment
In the following, a first embodiment of an elevator according to the invention will be described on the basis of FIGS.

As shown in FIG. 1, the machine room less elevator 1 includes a car 5 moving up and down in the hoistway 2 and guide

rails

3A and 3B for a pair of left and right cars guiding up and down of the car 5 in the hoistway 2. And guide

rails

4A and 4B for counterweights for guiding raising and lowering of the counterweights 6. The hoisting machine 8 has a main rope 7 in which the car 5 is suspended near one end and the counterweight 6 is suspended near the other end, and a hoisting machine 8 having a drive sheave 14 around which the middle rope 7 is wound. And a support structure 24 provided at the top of the path 2 and supporting the hoisting machine 15. The elevator 1 further includes a governor or the like (not shown) for adjusting the elevating speed of the car 5.

The support structure 24 of the hoisting machine 15 includes a machine base 17 for directly supporting the hoisting machine 8, a pair of machine beams 18 for supporting the machine base 17, and an anti-vibration material for supporting the end of the machine beam 18 13 and a

rope end beam

10, 11 which extends in a direction perpendicular to the machine beam 18 and is fixed to a building and supports the vibration proof support 12, a machine beam 18 is machined. And an upper support member 25 for fixing the base 17 therebetween.

The hoistway 2 has a building end wall 2A to which the rope end beam 10 on the counterweight side of the support structure 24 and the rope end beam 11 on the car side are fixed. The main rope 7 is composed of a plurality of strands, and is wound around the drive sheave 14 of the hoisting machine 8 in a single wrap method, for example. The car 5 has a pair of car

lower pulleys

9A, 9B disposed on the lower side. The car

lower pulleys

9A and 9B are attached to the car 5 in the horizontal direction. The pulley mounting position of the car 5 is not limited to the lower part of the car, and may be mounted on the upper side of the car 5.

The hoisting machine 8 has a drive unit body 15, a drive sheave 14 for driving the main rope 7, and a brake unit 16 for stopping the driving of the elevator 1.

The brake unit 16 is attached to the lower part of the drive device main body 15. This is to improve the maintainability by making it easy for the operator to maintain the brake unit 16 when performing maintenance work of the hoisting machine 8 from above the car 5. The attachment position of the brake portion 16 is not limited to the lower portion of the hoisting machine 8 and may be attached to the upper portion. The counterweight 6 has a counterweight pulley 23 disposed obliquely above it. The counterweight pulleys 23 are not limited to the diagonal arrangement, and may be arranged in the horizontal direction.

As shown in FIG. 2, the machine beam 18 is configured of a pair of beams provided in parallel on both sides with the hoisting machine 8 interposed therebetween, and is disposed on the lower surface of the machine base 17. The rope end beam 10 on the counterweight side is provided with a rope end portion 21 for fixing the other end of the main rope 7 on the counterweight 6 side. Further, a rope end portion 22 for fixing one end of the main rope 7 on the side of the car 5 is provided on the rope end beam 11 on the car side.

As shown in FIG. 3, the support structure 24 includes a machine base 17 directly supporting the hoisting machine 8, a machine beam 18 supporting the machine base 17, and an anti-vibration support base 12 supporting an end of the machine beam 18. And the anti-vibration material 13 interposed between the anti-vibration support base 12 and the rope end beams 10 and 11 extending in a direction orthogonal to the machine beam 18 and supported by the building and supporting the anti-vibration support base 12 And an upper support member 25 fixed between the machine bases. The vibration insulating material 13 is made of, for example, a rubber-like elastic body. The upper support member 25 is composed of an arch member 19 and a support member 20 and is provided across the machine base 17 at both ends.

As shown in FIG. 3, the machine base 17 is formed in a concave shape in which the cross section is turned over with a hat, and the left and right upper arms 17A of the machine base 17 are supported by a pair of machine beams 18 and fixed to the upper surface of the bottom 17B. The base plate 17C is formed of a plate-like member. The legs 15A of the hoisting machine 8 are placed on the upper surface of the base plate 17C, and fixed to the base plate 17C with a plurality of bolts (not shown). Accordingly, the hoisting machine 8 is disposed at substantially the same height, a portion of which overlaps the machine beam 18. For this reason, the size of the space at the top of the hoistway 2, that is, the overhead portion is smaller than that of the conventional example in which the hoisting machine 8 is mounted on the upper side of the machine beam 18. The upper support member 25 is provided across the ends of the machine base 17 and has a function of reinforcing the strength of the machine base 17. By lowering the depth of the bottom 17B of the machine base 17, the height of the hoisting machine 8 can be further lowered and the overhead can be reduced.

FIG. 4 is a rear view of FIG. 3 as viewed from the opposite direction. In FIG. 4, a pair of left and right brakes 16 are provided below the drive device main body 15 of the hoisting machine 8. The brake unit 16 is rotatably supported by and fixed to the drive main body 15 so as to be separated from the drive main body 15 and easily checked at the time of maintenance inspection.

As shown in FIG. 5, it is necessary to disassemble the brake unit 16 located at the lower part of the hoisting machine 8, and when disassembled, the brake unit 16 pivots and hangs down to the vertical position. Thus, the cross-sectional size of the machine beam 18 needs to be reduced so that the brake 16 does not interfere with the machine beam 18.

The conventional machine beam 30 shown in FIG. 7 needs to satisfy the required strength using a large cross-sectional size in order to maintain rigidity by itself. However, when the machine beam of the same size as the conventional one is used, the brake unit interferes with the machine beam. The machine beam 18 according to the present invention is configured to have a small beam size so as not to interfere with the brake portion 16 and has a structure for reinforcing a reduction in the beam size.

When the car 5 of the elevator 1 ascends and descends, a hanging load is applied to the drive sheave 14 of the hoisting machine 8 and a force (bending moment) which is bent inward is generated on the machine base 17 and the machine beam 18. Accordingly, the upper support member 19 is bridged between the machine beams 18 in order to satisfy the required strength when the size of the machine beams 18 is small.

As shown in FIG. 3, the upper support member 25 has a structure in which a support member 20 is attached to the base by vertically standing an arch member 19 formed of a plate-like member formed in an arch shape. Further, the upper support member 25 is bridged over the upper portion of the drive device main body 15 of the hoisting machine 8 and is fixed to the upper surface of the upper arm 17A of the machine base 17. The upper support member 25 is in contact with the upper surface of the upper arm 17A of one machine base 17 across the entire widthwise direction as shown in FIG. It contacts in the same way as the 17A top surface. That is, by bridging the upper support member 25 on the upper surface of the upper arm 17A of the machine base 17, the same effect as bridging the beam between the machine beams 18 is obtained.

As shown in FIG. 2, one of the pair of upper support members 25 is disposed in the vicinity of the drive sheave 14 of the hoisting machine 8 to which a large load is applied. Further, the other of the upper support members 25 is disposed in the vicinity of the brake portion 16 of the hoisting machine 8. By arranging the upper support member 25 in the above-mentioned position, it is possible to increase the bending strength and to significantly reduce the bending of the machine base 17 and the machine beam 18.

According to the first embodiment, as described above, the elevator 1 supports the car 5 moving up and down in the hoistway 2, the hoisting machine 8 driving the car 5, and the support structure supporting the hoisting machine 8. 24 and the support structure 24 includes a machine base 17 directly supporting the hoisting machine 8, a machine beam 18 supporting the machine base 17, and an anti-vibration support base 12 supporting an end of the machine beam 18. The rope end beams 10 and 11 extending in a direction perpendicular to the machine beam 18 and supported by the building wall and supporting the anti-vibration support base 12 and an upper support member 25 fixed between the machine bases, A brake unit 16 is disposed below the hoisting machine 8 to reduce the beam size of the machine beam 18 in order to prevent interference with the brake unit 16.

Also, the central portion of the hoisting machine 8 is disposed at substantially the same height as the machine beam 18. In this case, as compared with the conventional example shown in FIG. 7, since the machine base 17 has a concave shape, the machine beam is directly supported on the conventional receiving beam, and the height of the winding machine is increased by the amount of the support beam omitted. Can be reduced. By using the upper support member 25 fixed to the machine base 17 for that portion, the dimension of the overhead portion of the hoistway 2 as a whole is not affected.

According to the above configuration, the hanging load applied to the drive sheave 14, that is, the load applied to the machine base 17 and the machine beam 18 can be dispersed to the upper support member 25 bridged over the hoisting machine 8. It becomes possible to reduce the machine beam size and prevent the hoisting machine 8 from projecting above the hoistway 2.

At this time, since the upper support member 25 is formed of a plate-like member provided in the vertical direction, it is possible to realize a lightweight support member having high bending strength.

Since the machine base 17 and the upper support member 25 support bending and twisting of the beam due to the hoisting load of the hoisting machine, a beam with a small cross-sectional area can be used for the machine beam.

Therefore, the size of the overhead portion of the hoistway 2 can be further reduced, and space saving and manufacturing cost reduction can be achieved. Further, even when the position of the brake unit 16 is lowered, interference between the brake unit 16 of the hoisting machine 8 and the machine beam 18 can be prevented, and maintenance can be improved.

Moreover, the vibration generated in the hoisting machine 8 can be absorbed by the anti-vibration support 13 interposed with the anti-vibration material 12 provided between the rope end beams 10 and 11 and the machine beam 18.
Second Embodiment
Subsequently, a second embodiment of the elevator will be described with reference to FIG. The elevator 31 of the second embodiment differs from the first embodiment in the shape and arrangement of the upper support member 25A, but the other parts are common. Therefore, parts different from the first embodiment will be mainly described, and the parts common to the first embodiment will be assigned the same reference numerals, and the description will be omitted.

As shown in FIG. 6, the upper support member 25A having the arch member 19A and the support member 20A is not fixed to the upper surface of the machine base 17, but the drive sheave 14 of the hoisting machine 8 and the brake portion 16 Over the top, it is fixed directly between a pair of machine beams 18.

According to this configuration, the upper support member 25A does not need to be bridged to the upper part of the drive main body 15, and the upper support member 25A can be directly fixed to the machine beam 18 if it does not interfere with the hoisting machine 8. As a result, the height of the overhead portion of the hoistway 2 can be further shortened by the thickness of the upper arm of the machine base 17, and the support member 20A fixed to the machine beam 18 can also be made smaller. Therefore, space saving and manufacturing cost reduction can be achieved.

When the load applied to the drive sheave 14 is large and the strength can not be satisfied, the upper support member 25 is disposed on the upper surface of the machine base 17 only on one side of the drive sheave, and the upper support member 25A is disposed on the other. By fixing at a fixed position, it is also possible to respond to satisfy the strength.

DESCRIPTION OF

SYMBOLS

1, 31 ... Elevator, 2 ... A hoistway, 5 ... Carb, 6 ... Balance weight, 7 ... Main rope, 8 ... Winding machine, 9A, 9B ... Car lower pulley, 10, 11 ... Rope end beam, 12 ... Anti-vibration support stand, 13 ... Anti-vibration material, 14 ... Drive sheave, 15 ... Drive device main body, 16 ... Brake part, 17 ... Machine base, 17 A ... Upper arm part, 17 B ... Bottom part, 17 C ... Base plate, 18 ... Machine Beam, 19, 19A: arch member, 20, 20A: support member, 21, 22: rope end portion, 23: counterweight, pulley, 24: support structure, 25, 25A: upper support member

Claims

A hoisting machine having a drive sheave installed on the hoistway and driving the car through a rope and a brake unit installed in the hoistway and supporting the hoisting machine in the hoistway An elevator having a supporting structure, the supporting structure includes a machine base for supporting the hoisting machine, a pair of machine beams for supporting both ends of the machine base, and the pair of machine beams, And at least one upper support member fixed to the machine beam directly or through the machine base, extending in a direction perpendicular to the machine beam and supporting the machine beam and being fixed to the hoistway And an anti-vibration support provided between the machine beam and the beam, the hoisting machine being substantially identical to the machine beam An elevator characterized in that it is disposed at a height of.
The elevator according to claim 1, wherein the upper support member comprises an arched plate member vertically and a support member joined to the bottom.
The elevator according to any one of claims 1 to 2, wherein the machine base has a bottom portion supporting the hoisting machine formed at a central portion, and an upper arm portion engaged with the machine beam formed at both ends. An elevator characterized in that it has a recess cross-sectional shape having the following.
The elevator according to any one of claims 1 to 3, wherein the brake portion is rotatably attached to a lower portion of the hoisting machine.
5. The elevator according to claim 4, wherein the cross section of the machine beam has a beam size which does not interfere with the brake unit of the hoisting machine.
The elevator according to any one of claims 1 to 5, wherein the upper support member is disposed in the vicinity of a drive sheave of the hoist.
The elevator according to claim 6, wherein the upper support member is disposed in the vicinity of the brake of the hoist.
The elevator according to any one of claims 3 to 7, wherein the pair of machine beams are disposed below the upper arm of the machine base that supports the hoisting machine.
9. An elevator according to any one of the preceding claims, wherein the beam is a rope end beam securing the rope end.
The elevator according to any one of claims 1 to 9, wherein the anti-vibration support base is configured to interpose an anti-vibration material.