CN115667115A - Elevator cage - Google Patents

Abstract

The invention aims to provide an elevator car which can restrain the increase of the number of components caused by the specification change of the elevator and can ensure the strength. The car of the invention has an upper beam (9) disposed at the upper part, a pair of vertical frames (11A, 11B) with the upper end parts connected with the two end parts of the upper beam (9) in the long side direction, and a lower beam (10) disposed between the lower end parts of the vertical frames (11A, 11B) and with the two end parts connected with the lower end parts of the vertical frames (11A, 11B), and a car chamber (8) is disposed at the part surrounded by the upper beam (9), the vertical frames (11A, 11B) and the lower beam (10). The present invention further includes an overhanging portion mounting bracket (20), and an overhanging portion (24) for suspending an overhanging device is fixed to the overhanging portion mounting bracket (20). The suspended part mounting bracket (20) is arranged and fixed to the lower beam (9) such that the longitudinal direction thereof is orthogonal to the longitudinal direction of the lower beam (10).

Description

Elevator cage

Technical Field

The present invention relates to an elevator car.

Background

As a conventional car floor device for an elevator, for example, a technique described in patent document 1 is proposed. Patent document 1 discloses a technique in which a plurality of through holes are provided in a floor panel covering the lower surface of a car floor support frame, and one side of an L-shape of a mounting metal fitting is inserted into any one of the plurality of through holes and fastened by a bolt. Further, a mounting hole is provided in the other side of the mounting fitting protruding from the bottom panel, and an under-car mounting device such as a balance bar or a car balance correction weight is mounted in the mounting hole.

In patent document 1, even when the size of the car floor, the position of the counterweight of the elevator, the size of the balance cable, and the like are different, the use of mounting members such as mounting arms is avoided by appropriately adjusting the positions of the mounting fittings mounted in the through holes, and the increase in the number of components is suppressed to improve productivity.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2005-162349

Disclosure of Invention

Problems to be solved by the invention

However, in the technique described in patent document 1, since the bottom panel is provided with a plurality of through holes, there is a problem that the strength of the bottom panel is insufficient. As disclosed in fig. 3 of patent document 1, when the through holes are arranged in a right-angled arrangement, the cross-sectional area between the through holes is particularly small, and the through holes may be in a needle-eye state, resulting in insufficient strength.

The invention aims to provide an elevator car capable of restraining the increase of the number of components caused by the specification change of the elevator and ensuring the strength.

Means for solving the problems

In order to achieve the above object, the present invention provides an elevator car including an upper beam disposed at an upper portion, a pair of vertical frames each having an upper end portion connected to both end portions of the upper beam in a longitudinal direction, and a lower beam disposed between lower end portions of the pair of vertical frames and having both end portions connected to the lower end portions of the pair of vertical frames, wherein a car room is disposed in a portion surrounded by the upper beam, the pair of vertical frames, and the lower beam, the elevator car including a suspended portion mounting bracket to which a suspended portion suspending a suspension device is fixed, the suspended portion mounting bracket being disposed and fixed to the lower beam such that a longitudinal direction of the suspended portion mounting bracket is orthogonal to a longitudinal direction of the lower beam.

Effects of the invention

According to the present invention, it is possible to provide an elevator car capable of ensuring strength while suppressing an increase in the number of components due to a change in the specification of the elevator.

Drawings

Fig. 1 is a schematic configuration diagram of an elevator apparatus according to an embodiment of the present invention.

Fig. 2 is an enlarged side view of the car shown in fig. 1.

Fig. 3 is a perspective view showing only the car frame shown in fig. 2.

Fig. 4 is a perspective view showing the under-floor side member fixed to the lower member and the suspended portion mounting bracket.

Fig. 5 is a view of fig. 4 viewed from the direction R1.

Fig. 6 is an upward view of the suspended portion mounting bracket and the reinforcing bracket of fig. 5 as viewed from the L direction.

Fig. 7 is a view of fig. 6 as viewed from the direction R2.

Fig. 8 is a perspective view showing a state in which a trailing cable is hung on a suspended portion of the suspended portion mounting bracket.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components are denoted by the same reference numerals, and the same description will not be repeated.

The various components of the present invention do not necessarily have to be individually and independently present, and it is permissible for one component to be constituted by a plurality of members, for a plurality of components to be constituted by one member, for a component to be a part of another component, for a part of a component to overlap with a part of another component, or the like.

Fig. 1 is a schematic configuration diagram of an elevator apparatus according to an embodiment of the present invention. In fig. 1, an elevator apparatus is installed in an elevator shaft, not shown. One end of a main rope 2 wound around the hoist 1 is suspended by passing through a pair of left and right lower car pulleys 4A and 4B provided at a lower portion of the car 3, and then fixed at a position above the elevator shaft. The other end of the main rope 2 is suspended by passing through a pulley 6 of the counterweight 5 and then fixed to the upper part of the ascending/descending path. The elevator apparatus drives the hoist 1 to rotate, and the car 3 provided on one side of the main rope and the counterweight provided on the other side of the main rope move in the vertical direction in the elevator shaft.

Fig. 2 is an enlarged side view of the car 3 shown in fig. 1. In the present embodiment, as shown in fig. 2, the front-rear, the up-down, and the left-right are defined with reference to the line of sight (the upper and lower car gates) of the user of the elevator facing the car 3. In fig. 2, the car 3 is composed of a car frame 7 and a car room 8 formed inside the car frame 7.

The car frame 7 includes an upper beam 9 disposed in an upper portion of the car room 8, a lower beam 10 disposed in a lower portion of the car room 8, and a pair of vertical frames 11A and 11B that connect end portions of the upper beam 9 and the lower beam 10 to each other at side portions of the car room 8. Here, the upright frame 11A is positioned on the back side of the car room 8, and is not shown in the drawing. The car frame 7 is disposed so as to be shifted forward from the center position of the car room 8 in the front-rear direction, and the car lower pulleys 4A and 4B are disposed so as to be located at the center position of the car room 8 in the front-rear direction.

Fig. 3 is a perspective view showing only the car frame shown in fig. 2. In fig. 3, the car frame 7 is configured by connecting the upper ends of the pair of vertical frames 11A and 11B to each other with bolts 31 at both ends in the longitudinal direction (left-right direction) of the upper member 9 disposed at the upper portion, and connecting the lower ends of the pair of vertical frames 11A and 11B to each other with bolts 32 at both ends in the longitudinal direction (left-right direction) of the lower member 10 disposed at the lower portion.

The lower beam 10 is formed of two U-shaped members, and the U-shaped openings are arranged to face each other with a gap therebetween. The two members are fastened and fixed by bolts 33 via fastening members 19 (see fig. 3 and 4). The surface positioned above the lower beam 10 is provided with a placement portion 10A and a placement portion 10B.

The car frame 7 is provided along a rail not shown. An emergency stop device 12 that applies braking to the car 3 via the guide rails when the car 3 exceeds a predetermined falling speed and stops the car 3 is provided below the underbeam 10. A guide bracket 13 for ensuring stability when the car 3 moves vertically along the guide rails is provided below the safety device 12.

The pair of floor lower side members 14A and 14B are placed on the placement portions 10A and 10B of the lower member 10 and fixed by bolts 40 (see fig. 5), and the floor of the car room 8 is placed on the floor lower side members 14A and 14B at the portions indicated by the broken line frame 50 in fig. 2 via the vibration isolators 15 such as springs. The floor lower side members 14A, 14B are disposed substantially horizontally on the inner sides of the upright frames 11A, 11B facing each other, extending in the front-rear direction orthogonal to the left-right direction (longitudinal direction) of the lower member 10.

Pulley brackets 16A, 16B are fixed to the lower surfaces of the underfloor side members 14A, 14B by bolts 40. The pulley brackets 16A and 16B rotatably support the car lower pulleys 4A and 4B. A wire guide 17 fixed by a bolt 35 is fixed below the pulley brackets 16A, 16B so as to connect the pulley brackets 16A, 16B to each other. The rope guide 17 protects the main ropes 2 hung on the car lower pulleys 4A and 4B from being caught by foreign matters.

Suspension devices such as trailing cables (tail cord) are suspended below the car 3. Since the position at which the suspension device is suspended differs depending on the specifications of an elevator, such as a machine room and a non-machine room, for example, it is necessary to change the means for suspending the suspension device depending on the specifications of the elevator. Therefore, the conventional product design becomes complicated.

In addition, even in the same elevator without machine room, the suspension load is different when the height of the installed building and the size of the car are different, but the installation position of the suspension device is the same in the past. As a result, the suspension load becomes unbalanced, and vibration is generated while the car moves.

A solution to this problem will be described with reference to fig. 4 to 8. Fig. 4 is a perspective view showing the under floor side member fixed to the underbeam and the suspended portion mounting bracket, fig. 5 is an upward view of fig. 4 as viewed from the R1 direction, fig. 6 is an upward view of the suspended portion mounting bracket and the reinforcing bracket as viewed from the L direction, fig. 7 is an upward view of fig. 6 as viewed from the R2 direction, and fig. 8 is a perspective view showing a state in which the trailing cable is suspended in the suspended portion of the suspended portion mounting bracket.

Two (a plurality of) hanging part mounting brackets 20, 21 are fixed to the placement parts 10A, 10B on the lower beam 10. The suspended portion mounting brackets 20 and 21 include flat portions 20A and 21A and bent portions 20B and 21B, respectively. The bent portions 20B, 21B are formed at the ends of the short-side direction (left-right direction) orthogonal to the longitudinal direction (front-back direction) of the flat portions 20A, 21A, and are formed by bending the flat portions 20A, 21A upward in a U-shape. The bent portions 20B, 21B are formed along the longitudinal direction of the suspended portion mounting brackets 20, 21.

One end of the two (or more) suspended portion mounting brackets 20 and 21 in the longitudinal direction is fixed to the mounting portions 10A and 10B by bolts 41 and 42, respectively. The suspended portion mounting brackets 20 and 21 are disposed and fixed to the mounting portions 10A and 10B of the lower beam 10 such that the longitudinal direction thereof is orthogonal to the longitudinal direction of the lower beam 10. The suspended portion mounting brackets 20 and 21 are in a cantilever state, but since the bent portions 20B and 21B are formed along the longitudinal direction in the present embodiment, strength can be secured against shear stress applied to the suspended portion mounting brackets 20 and 21.

In the present embodiment, a reinforcing bracket 23 is provided below the suspended portion mounting bracket 20. The reinforcing bracket 23 is provided so that the longitudinal direction thereof is along the longitudinal direction of the suspended portion attachment bracket 20. Although not shown, a reinforcing bracket is also provided below the suspended portion mounting bracket 21. Hereinafter, the structure of the reinforcing bracket 23 attached to the lower portion of the suspended portion attachment bracket 20 will be described, but the same applies to the reinforcing bracket attached to the suspended portion attachment bracket 21.

As shown in fig. 5 and 7, the reinforcing bracket 23 is formed in an L-shape when viewed in the longitudinal direction (front-rear direction), and includes an upper surface portion 23A in the horizontal direction and a vertical portion 23B extending downward from the upper surface portion 23A in the vertical direction (vertical direction) orthogonal to the upper surface portion 23A. The reinforcing bracket 23 is formed to have a length in the longitudinal direction shorter than the suspended portion mounting bracket 20.

The upper surface portion 23A of the reinforcing bracket 23 is opposed to the flat surface portion 20A of the suspended portion mounting bracket 20, and is fixed by a plurality of bolts 43. At an end portion of the vertical portion 23B in the longitudinal direction (front-rear direction) on the side of the lower beam 10, a support portion 23C is formed which is bent from the vertical portion 23B toward the longitudinal direction (left-right direction) of the lower beam 10. The support portion 23C faces the side surface of the lower beam 10, and is fixed to the lower beam 10 by a bolt 44. Thus, the reinforcement bracket 23 is fixed to the lower beam 10 and the suspended portion mounting bracket 20.

A part of the load received by suspended portion mounting bracket 20 is transmitted from vertical portion 23B to support portion 23C. The load transmitted to the support portion 23C is transmitted to the lower beam 10. In the present embodiment, the load applied to the suspended portion mounting bracket 20 is dispersed to the end portion of the suspended portion mounting bracket 20 and the support portion 23C of the reinforcing bracket 23, and therefore the strength of the suspended portion mounting bracket 20 can be ensured.

An inclined portion 23D is formed below the vertical portion 23B of the reinforcing bracket 23 so that the vertical length of the vertical portion 23B becomes shorter (height becomes lower) as the distance from the lower beam 10 increases. By forming in this way, the weight of the reinforcing bracket 23 can be reduced.

An overhang portion 24 for suspending an overhang device such as a trailing cable is provided below the overhang portion mounting bracket 20. The hanging portion 24 includes a U-shaped hanging frame 24A that opens downward, and a rod 24B that connects the ends of the open portion of the hanging frame 24A to each other. The suspension frame 24A has an upper U-shaped bottom fixed to the suspension attachment bracket 20 by a bolt 45. The rod 24B is formed in a cylindrical shape. A hanging device is hung at the hanging portion 24. In the present embodiment, as an example of the suspension device, as shown in fig. 8, the trailing cable 30 is suspended at the suspended portion 24. The trailing cable 30 passes between the U-shaped bottom of the suspension frame 24A and the rod 24B, and is suspended from the rod 24B.

As described above, in the present embodiment, the suspended portion mounting bracket 20 is fixed to the underbeam 10, and the suspended portion 24 from which the suspended equipment is suspended is fixed to the suspended portion mounting bracket 20. Since suspended portion mounting bracket 20 is fixed to mounting portions 10A and 10B of lower beam 10 by bolts 41, the position of suspended portion mounting bracket 20 can be freely changed by merely changing the fastening position by bolts 41. As shown in fig. 4, the mounting portions 10A and 10B of the lower beam 10 of the present embodiment are formed with a plurality of mounting holes 60A and 60B along the longitudinal direction of the lower beam 10 for inserting the bolts 41 for fixing the suspended portion mounting bracket 20. A plurality of support portion attachment holes 61A and 61B for fixing the reinforcement bracket 23 are formed in the side surface of the lower beam 10 in correspondence with the plurality of attachment holes 60A and 60B.

When the suspension device is mounted below the car 3, any one of the plurality of mounting holes 60A and 60B is selected according to the specification of the elevator, and the bolt 41 is inserted to fix the suspended portion mounting bracket 20. By selecting any of the mounting holes 60A and 60B of the fixed suspended portion mounting bracket 20, the position where the suspended device is mounted can be freely changed. The length and extending direction of the suspended portion mounting bracket 20 are appropriately selected depending on the specification of the elevator and the type of the suspension device, in addition to the fixed position. For example, in fig. 4, a suspended portion mounting bracket 21 shorter than the length of the suspended portion mounting bracket 20 is fixed to the lower beam 10. The extending direction of suspended portion mounting bracket 21 is different from that of suspended portion mounting bracket 20.

According to the present embodiment, since the suspended portion mounting bracket to which the suspension device is mounted is fixed to the underbeam by the bolts, the mounting position, length, and the like of the suspended portion mounting bracket can be changed according to the specification of the elevator, and an increase in the number of components due to the specification change of the elevator can be suppressed.

Further, according to the present embodiment, the reinforcement bracket is fixed to the lower side of the suspended portion mounting bracket, and the reinforcement bracket is fixed to the lower beam, so that the strength of the suspended portion mounting bracket can be secured when the suspended portion mounting bracket suspends the suspended equipment.

The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the above-described embodiments have been described in detail to facilitate understanding of the present invention, and are not necessarily limited to having all of the described configurations.

Description of the reference numerals

3 … car, 7 … car frame, 8 … car chamber, 9 … upper beam, 10 … lower beam, 10A, 10B … carrying part, 11A, 11B … upright frame, 14A, 14B … under floor side beam, 20, 21 … overhanging part mounting bracket, 20A, 21A … plane part, 20B, 21B … bending part, 23 … reinforcing bracket, 23A … upper surface portion, 23B … vertical portion, 23C … support portion, 24 … overhanging portion, 24A … overhanging frame body, 24B … rod, 30 … trailing cable, 31, 32, 33, 35, 40, 41, 42, 43, 44, 45 … bolt, 60A, 60B … mounting hole, 61A, 61B … support portion mounting hole.

Claims (10)

1. An elevator car having an upper frame disposed at an upper portion, a pair of upright frames each having an upper end portion coupled to both end portions of the upper frame in a longitudinal direction, and a lower frame disposed between lower end portions of the pair of upright frames and each having both end portions coupled to lower end portions of the pair of upright frames, and a car room disposed in a portion surrounded by the upper frame, the pair of upright frames, and the lower frame,

the car of the elevator is provided with a suspension part mounting bracket, the suspension part mounting bracket is fixed with a suspension part for suspending the suspension device,

the hanging part mounting bracket is arranged and fixed to the lower beam in such a manner that a longitudinal direction of the hanging part mounting bracket is orthogonal to a longitudinal direction of the lower beam.

2. Elevator car according to claim 1,

the hanging part mounting bracket is formed with a bending part formed by bending an end part in the short side direction upwards in a U shape.

3. Elevator car according to claim 2,

the bent portion is formed along a longitudinal direction of the suspended portion mounting bracket.

4. Elevator car according to one of claims 1 to 3,

a plurality of mounting holes are formed in the lower beam along the longitudinal direction,

the suspended portion mounting bracket is fixed by inserting a bolt into any of the plurality of mounting holes.

5. Elevator car according to claim 4,

a reinforcing bracket is provided below the hanging part mounting bracket and is arranged along the longitudinal direction of the hanging part mounting bracket.

6. Elevator car according to claim 5,

the reinforcing bracket includes an upper surface portion fixed to the suspended portion mounting bracket, a vertical portion extending downward from the upper surface portion in a vertical direction orthogonal to the upper surface portion, and a support portion bent toward a longitudinal direction of the underbeam at an end portion in the longitudinal direction of the vertical portion, and the reinforcing bracket fixes the support portion to the underbeam.

7. Elevator car according to claim 6,

an inclined portion is formed below the vertical portion such that a vertical length of the vertical portion becomes shorter as the vertical portion is separated from the lower beam.

8. Elevator car according to claim 4,

the hanging part is provided with a U-shaped hanging frame body which is opened downwards and a rod which connects the end parts of the opening part of the hanging frame body.

9. Elevator car according to claim 8,

the overhanging portion fixes the U-shaped bottom portion located above to the overhanging portion mounting bracket by a bolt.

10. The elevator car of claim 9,

the pendant device is a trailing cable,

the trailing cable passes between the U-shaped bottom of the drop frame and the pole and is suspended from the pole.

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