WO2023021652A1

WO2023021652A1 - Elevator car and elevator

Info

Publication number: WO2023021652A1
Application number: PCT/JP2021/030356
Authority: WO
Inventors: 智貴仮屋; 麻里大菅; 好貴戸村; 勝博島田
Original assignee: 株式会社日立製作所
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2023-02-23
Also published as: JPWO2023021652A1

Abstract

This elevator car has a car chamber having a doorway at the front in the front-rear direction and a control box at the top in the vertical direction, and a car frame to which the car chamber is fixed. This elevator car also has a wiring bracket fixed to a lower frame that is provided at the bottom of the car frame in the vertical direction, the wiring bracket extending forward from the rear on the opposite side from the front where the doorway is installed, and serving to wire a tail cord that is to be connected to the control box while supporting the tail cord from the rear to the front.

Description

car and elevator

The present invention relates to cars and elevators.

Conventionally, in an elevator, a device box is installed above the car to store the elevator control panel, door opening/closing control device, lighting device inside the car, etc. Generally, the instrument box is installed in the upper part of the elevator car on the car door side. Patent Document 1 discloses a configuration in which the instrument box is placed horizontally with respect to the mounting base of the door opening device provided at the upper part of the car door side of the passenger car so that the longitudinal direction is parallel to the base. .

JP-A-2002-128423

In this way, in conventional elevators, the equipment box is placed on the upper side of the car door of the passenger car. On the other hand, the tail cord connected to the control box is wired from the wall surface of the hoistway opposite to the side where the landing door is provided. Therefore, in order to connect the tail cord wired from the hoistway side to the equipment box located at the upper part of the car door side of the elevator car, it is necessary to connect the tail cord to the rear of the car in the longitudinal direction under the floor of the car. You need to run the wires from the side to the front and then to the top of the car.

By the way, since the space under the floor of the car is limited, the workability of crawling the tail cord from the rear to the front of the car was inefficient and took a long time. In addition, depending on the position where the tail cord is laid, the number of bends of the tail cord increases, and the load on the tail cord increases.

Therefore, an object of the present invention is to provide a car and an elevator capable of simplifying the wiring route under the floor of the car for the tail cord and shortening the working time.

In order to solve the above problems and achieve the object of the present invention, a car of the present invention has a doorway in front in the longitudinal direction and a control box in the upper part in the vertical direction, and the car is fixed. and a basket frame. In addition, the tail cord is fixed to the lower frame provided below the car frame in the vertical direction, extends from the rear to the front on the side opposite to the front where the doorway is installed, and connects to the control box from the rear to the front. and a wiring bracket for wiring while supporting it.

The elevator of the present invention has the above car.

According to the present invention, the wiring route under the floor of the car for the tail cord is simplified, so the work time can be shortened.

1 is a schematic configuration diagram showing an elevator according to one embodiment of the present invention; FIG. It is the side view which expanded and showed the car 3 of the elevator of one Embodiment of this invention. 4 is a perspective view of the state of arrangement of the tail cord 80 in the car 3 as viewed from above. FIG. 4 is a perspective view of the arrangement of tail cords 80 in the car 3 as viewed from below. FIG. FIG. 2 is a perspective view of the arrangement of tail cords 80 viewed from above with the car floor 10 removed. Fig. 2 is a perspective view of the arrangement of tail cords 80 as viewed from below with the car floor 10 removed; FIG. 3 is a front view (front) of the arrangement of the tail cord 80 in the car frame 20; FIG. 8 is a diagram of the car frame 20 viewed from a cross section along line BB of FIG. 7 ; It is the figure which looked at the car frame from the cross section along the AA line of FIG. FIG. 3 is a side view of the arrangement of tail cords 80 in the car frame 20; FIG. 11 is a diagram of the car frame 20 viewed from a cross section taken along line CC of FIG. 10;

An example of a car and an elevator according to embodiments of the present invention will be described below with reference to the drawings. In addition, the present invention is not limited to the following examples. In each figure explained below, the same code|symbol is attached|subjected to a common member.

1. Elevator First, the configuration of an elevator according to one embodiment of the present invention (hereinafter referred to as the present embodiment) will be described with reference to FIG. FIG. 1 is a schematic configuration diagram showing an elevator according to this embodiment.

In this embodiment, as shown in FIG. 1, a so-called 2:1 roping type elevator 1 will be described as an example. The elevator of the present invention is not limited to the 2:1 roping type elevator, but can also be applied to a 1:1 roping type elevator.

As shown in FIG. 1, the elevator 1 includes a car 3 that ascends and descends in a hoistway, a main rope 2, a hoist 90, and a counterweight 5 that is suspended from the car 3 via the main rope 2. and Further, the car 3 has a tail cord 80 (see FIG. 2) for supplying power to a control box 100 (see FIG. 2) installed on the top of the car 3 . The control box 100 accommodates various control devices such as the door section 8 and a lighting device. Hereinafter, the direction in which the car 3 and the counterweight 5 move up and down is defined as the vertical direction.

"Put people and luggage in car 3." Under-

car pulleys

4A and 4B are provided at the lower part of the car 3 in the vertical direction. A main rope 2 is wound around the under-

car pulleys

4A and 4B. The counterweight 5 is provided with a weight-side pulley 6 . A main rope 2 is wound around the weight side pulley 6. - 特許庁

The hoist 90 is installed at the top of the hoistway. The hoisting machine 90 also has a sheave around which the main rope 2 is wound. The hoisting machine 90 raises and lowers the car 3 and the counterweight 5 via the main rope 2 in a crane manner.

One end of the main rope 2 is attached to the top of the hoistway. The main rope 2 extends from the top of the hoistway toward the under-

car pulleys

4A and 4B. The main rope 2 is wound around the

lower car pulleys

4A and 4B, the sheave of the hoisting machine 90, and the weight side pulley 6 in this order from one end.

In addition, the other end of the main rope 2 extending upward from the weight-side pulley 6 of the hoistway is attached to the top of the hoistway in the same manner as the one end. By driving the hoisting machine 90, the car 3 and the counterweight 5 move up and down in the hoistway.

In addition, the car 3 includes a car floor 10 that serves as a floor surface of the car room 30, side plates 7, a ceiling 9, and a door portion 8. The car 3 also has a car frame 20 (see FIG. 2) that supports the car floor 10 . The car floor 10 and the ceiling 9 are arranged facing each other in the vertical direction. The side plates 7 are erected around the car floor 10 and the ceiling 9 . One side plate 7 of the side plates 7 surrounding the cage floor 10 is provided with a doorway. A door portion 8 is installed at the doorway so as to be openable and closable. The car floor 10, the side plates 7, the ceiling 9, and the door portion 8 constitute a car room 30 in which people and luggage are placed in the car 3.

2. Car FIG. 2 is a side view showing an enlarged car 2 of the elevator 1 of the present embodiment. 3 is a perspective view of the arrangement of the tail cords 80 in the car 3 as seen from above, and FIG. 4 is a perspective view of the arrangement of the tail cords 80 in the car 3 as seen from below. 5 is a top perspective view of the arrangement of the tail cords 80 with the car floor 10 removed, and FIG. 6 shows the arrangement of the tail cords 80 with the car floor 10 removed. is a perspective view of the from below. 7 is a front view (front) of the arrangement of the tail cord 80 in the car frame 20. As shown in FIG. 8 is a view of the car frame 20 viewed from a cross section along line BB of FIG. 7, and FIG. 9 is a view of the car frame viewed from a cross section along line AA of FIG. . 10 is a side view of the arrangement of the tail cords 80 in the car frame 20, and FIG. 11 is a cross-sectional view of the car frame 20 taken along line C--C in FIG.

In the present embodiment, as shown in FIGS. 2 to 11, the directions of front and back, up and down, and left and right are defined with reference to the line of sight of the user of the elevator 1 facing the car 3.

As shown in FIGS. 2 to 4, the car 3 includes a car frame 20 and a car room 30 arranged inside the car frame 20. As shown in FIGS. The floor of the car room 30 is composed of the car floor 10. - 特許庁5 and 6, the car 3 includes

floor support beams

41A and 41B, wiring brackets 75, and excess length processing brackets 74. As shown in FIGS. The floor support beams 41A, 41B allow the car frame 20 to support the car floor 10. As shown in FIG. The wiring bracket 75 wires the tail cord 80 . The surplus length processing bracket 74 adjusts the surplus length portion of the tail cord 80 .

[Car frame]
The car frame 20 includes an upper frame 22 arranged in the upper part of the car room 30 , a lower frame 23 arranged in the lower part of the car room 30 , and ends of the upper frame 22 and the lower frame 23 on the sides of the car room 30 . It has a pair of standing

frames

21A and 21B connecting the parts. As shown in FIG. 2, the car frame 20 is arranged to be shifted forward from the center position of the car room 30 in the longitudinal direction. Although not shown in FIGS. 2 to 11, a pair of under-

car pulleys

4A and 4B (see FIG. 1) are arranged at the central position of the car chamber 30 in the longitudinal direction.

The upper frame 22 is composed of a member extending in the left-right direction, and both ends in the longitudinal direction (left-right direction) are connected to the upper ends of the pair of

upright frames

21A and 21B by bolts. Similarly to the upper frame 22, the lower frame 23 is also composed of a member extending in the left-right direction, and both ends in the longitudinal direction (left-right direction) are connected to the lower ends of the pair of

upright frames

21A and 21B by bolts. there is The standing frames 21A and 21B are composed of members extending in the vertical direction, and are arranged at positions sandwiching the car chamber 30 in the horizontal direction. A car room 30 is installed in the car frame 20 composed of the upper frame 22, the lower frame 23, and the pair of

vertical frames

21A and 21B.

One of the pair of standing

frames

21A and 21B is provided with a plurality of (three in FIG. 2) wiring fixing brackets 71 in the longitudinal direction (vertical direction) at predetermined intervals. ing. The wiring fixing bracket 71 is formed of a plate-like member extending in the front-rear direction, and is cantilever-supported by fixing only one end to the standing frame 21A. Further, the wiring fixing bracket 71 is arranged so as to extend forward in the front-rear direction from the standing frame 21A. The wiring fixing bracket 71 fixes the tail cord 80 on the front side in the front-rear direction of the standing frame 21A. A fixing piece 72 for fixing wiring to the wiring fixing bracket 71 is fixed to the wiring fixing bracket 71 with a bolt. The tail cord 80 arranged vertically along the side surface of the car room 30 is held between the wiring fixing bracket 71 and the fixing piece 72, thereby being supported by the vertical frame 21A.

[Floor support beam]
The

floor support beams

41A and 41B are beams for supporting the car floor 10 on the upper portion of the lower frame 23. As shown in FIG. In this embodiment, a pair of

floor support beams

41A and 41B are fixed by bolts to upper portions of the lower frame 23 at both ends thereof in the left-right direction. Each of the

floor support beams

41A and 41B is composed of a member extending in the front-rear direction, and is horizontally arranged in a direction orthogonal to the lower frame 23. As shown in FIG.

Anti-vibration members 46 are arranged at both ends in the longitudinal direction of each of the

floor support beams

41A and 41B (see FIG. 2). The vibration isolating member 46 is made of, for example, vibration isolating rubber. The car floor is supported above the

floor support beams

41A and 41B via vibration isolating members 46. As shown in FIG.

Also, of the pair of

floor support beams

41A and 41B, the left floor support beam 41A in the left-right direction is provided with a wire holding portion 73 at a position overlapping the wire fixing bracket 71 in the vertical direction. The wiring holding portion 73 is wired along a wiring bracket 75 and an excess length processing bracket 74, which will be described later, and the tail cord 80, which is raised along the standing

frames

21A and 21B of the car frame 20, is attached to the floor support beam 41A. It is supported by holding it on the sides.

[basket floor]
As shown in FIGS. 3 and 4 , the car floor 10 according to this embodiment includes a floor frame 11 and a floor body 12 . The floor body 12 is composed of a rectangular plate member. The floor body 12 may be configured by a single plate member, or may be configured by stacking a plurality of plate members.

The floor frame 11 extends in the longitudinal direction of the car floor 10 and has a pair of

side frames

11A and 11B for fixing the floor body 12 to the

floor support beams

41A and 41B. Further, the floor frame 11 includes a front frame 11C that extends in the left-right direction of the car floor 10 and protects the front side surface of the floor body 12, and a front frame 11C that extends in the left-right direction of the car floor 10 and protects the rear side of the floor body 12. It has a rear frame 11D that protects the side surface.

The side frames 11A and 11B are configured to have a length approximately equal to the length of the floor body 12 in the front-rear direction. The side frames 11A and 11B have a lower surface portion arranged above the vibration isolating member 46 arranged on the upper surface side of the

floor support beams

41A and 41B, and a side surface portion having a length covering the side surface of the floor body. It is composed of a plate-shaped member that is bent at a right angle so as to have. The side frames 11A and 11B are arranged so that their lower surfaces abut against the vibration isolating members 46 provided on the

floor support beams

41A and 41B, and their side surfaces contact the

vertical frames

21A and 21B of the car frame 20. Fixed.

The front frame 11C and the rear frame 11D are configured to have a length substantially equal to the length of the floor body 12 in the left-right direction, and are fixed so as to cover the side surfaces of the floor body 12 in the front-rear direction. The rear frame 11D is fixed to the lower surface of the floor body 12 at its lower end in the vertical direction, and is fixed to the pair of

side frames

11A and 11B at both ends in the horizontal direction. The front frame 11C is fixed to a pair of

side frames

11A and 11B at both ends in the left-right direction. 11 C of front frames and 11 D of rear frames are comprised by the shape suitable for each use. For example, a door sill (not shown) is fixed to the upper surface of the front frame 11C in the vertical direction.

[Wiring bracket]
As shown in FIGS. 5 to 8, the wiring bracket 75 is a member for placing the tail cord 80 on the upper surface in the vertical direction and wiring in the front-rear direction, and extends in the front-rear direction with respect to the lower frame 23. It is composed of a plate-like member. The wiring bracket 75 is used to allow the tail cord 80 wired from the rear side of the car 3 to reach the control box 100 (see FIG. 2) installed in front of the top of the car 3 . For this reason, a member extending from the fixed position of the tail cord 80 at the rear of the car 3 to the raised position of the tail cord 80 at the front of the car 3 is formed. Such a wiring bracket 75 is fixed to the lower frame 23 with bolts, as shown in FIG.

The wiring bracket 75 is formed of a member with a U-shaped cross section having

bent portions

75a and 75b that are bent upward in the vertical direction at both ends in the left-right direction (width direction). . Further, in the present embodiment, as shown in FIG. 8 , the bent portion 75 a on the right side in the left-right direction is not provided at a portion of the wiring bracket 75 that is ahead of the lower frame 23 in the front-rear direction. Thereby, the wiring of the tail cord 80 can be bent rightward in the left-right direction.

The height of the

bent portions

75a and 75b in the vertical direction is set to a height that does not reach the car floor 10, and is set to a height that can restrain the movement of the tail cord 80 in the left-right direction. Further, as shown in FIG. 6 , a wiring fixing portion 79 is provided on the lower surface in the vertical direction of the rear end portion in the front-rear direction of the wiring bracket 75 . The wiring fixing portion 79 fixes the tail cord 80 extending from the inner wall surface side of the hoistway facing the rear of the car 3 to the wiring bracket 75 .

[Extra length processing bracket]
The surplus length processing bracket 74 is composed of a plate-like member extending parallel to the lower frame 23 . The surplus length processing bracket 74 is fixed to the wiring bracket 75 with bolts in front of the lower frame 23 . The excess length processing bracket 74 is a member that places the tail cord 80 wired to the wiring bracket 75 on the upper surface in the vertical direction and guides the tail cord 80 to the raised position (lower position of the control box 100). be. The excess length processing bracket 74 is formed of a plate-like member extending parallel to the lower frame 23 . 7, the extra length processing bracket 74 processes (adjusts) the excess length of the tail cord by bending the tail cord 80 in the horizontal direction.

As shown in FIGS. 6 and 9, the excess length processing bracket 74 has a flat portion 74b and a bent portion 74a. The flat portion 74b has a horizontal surface on which the tail cord 80 is placed. The bent portion 74a is bent upward in the vertical direction at the rear end portion in the front-rear direction (width direction) of the flat portion 74b. The height of the bent portion 74a in the vertical direction is a height that does not interfere with the installation of the wiring bracket 75. As shown in FIG. The height of the bent portion 74a is set to a height that can restrain the rearward movement of the bent tail cord 80 in the front-rear direction. In addition, the length of the excess length processing bracket 74 in the left-right direction is set to a length that does not interfere with other members installed under the floor. The left end of the excess length processing bracket 74 in the left-right direction is adjusted to a position vertically overlapping the left end in the left-right direction of the

floor support beams

41A and 41B arranged on the left side.

3. Method for Arranging Tail Cord Next, a method for arranging the tail cord 80 in the car 3 of the present embodiment will be described. Although not shown, the tail cord 80 extends toward the car 3 from the inner wall of the hoistway located on the side opposite to the doorway of the car 3 . For example, the tail cord 80 is fixed to an inner wall at an intermediate position in the vertical direction in the hoistway and connected to a control panel (not shown). The operator wires the tail cord 80, which is routed from the inner wall surface of the hoistway, to the control box 100 installed in front of the top of the car 3, and connects it to various control devices in the control box 100. conduct. This wiring work is performed while the car room 30 is installed on the car frame 20 .

First, the worker fixes the tail cord 80 to the wiring fixing portion 79 attached to the lower surface of the wiring bracket 75 . Next, the worker arranges the tail cord 80 along the wiring bracket 75 from the end side. At this time, as indicated by arrow c in FIG. 9, the tail cord 80 is pushed forward from behind the wiring bracket 75 . In the present embodiment,

bent portions

75a and 75b are provided at the ends of the wiring bracket 75 in the left-right direction, so that the tail cord 80 is restrained from moving in the left-right direction. Therefore, the tail cord 80 can be easily arranged up to the front of the wiring bracket 75 only by the pushing force of the operator.

Next, the worker wires the tail cord 80 that has been pushed forward of the wiring bracket 75 rightward in the horizontal direction along the excess length processing bracket 74 . In the present embodiment, the wiring bracket 75 is not provided with a bent portion on the front side in the front-rear direction and on the right side in the left-right direction. The burden can be reduced.

After that, while adjusting the extra length of the tail cord 80, the tail cord 80 is folded leftward on the excess length processing bracket 74 as shown in area a in FIG. Above the surplus length processing bracket 74, the folded portion of the tail cord 80 is arranged so as to overlap in the vertical direction.

Next, the tail cord 80 is taken out to the left side surface of the car 3 in the left-right direction, and along the side surface of the car room 30, the wire holding portion 73 and the wire fixing brackets 71 are provided. It is lifted upward in the vertical direction while being fixed to the fixing piece 72 . After that, the tail cord 80 lifted to the upper part of the car room 30 is connected to the control box 100 installed in the upper part of the car room 30 . This completes the wiring work for the tail cord 80 .

In this embodiment, wiring can be performed by pushing the tail cord 80 forward from the rear of the car room 30 using the wiring bracket 75 having a U-shaped cross section. As a result, the wiring work can be easily performed in a narrow space sandwiched between the car floor 10 and the lower frame 23. - 特許庁Conventionally, when adjusting the length of the tail cord 80, the adjustment portion of the tail cord 80 is pushed under the car floor 10 or the like. On the other hand, in this embodiment, the length of the tail cord 80 can be adjusted using the excess length processing bracket 74 . For this reason, in addition to the effect that the length can be easily adjusted, there is the effect that the appearance is improved.

By the way, the tail cord 80 is configured in a flat belt shape having a predetermined width. Therefore, when the wiring direction of the tail cord 80 is changed, if the tail cord 80 is to be bent in a plane parallel to the width direction, the radius of the bent portion becomes large and the wiring area increases. There is a problem that it is difficult to On the other hand, in a conventional car, the tail cord 80 is fixed to the lower surface of the car frame 20, bent toward the floor support beam 41A, and routed along the floor support beam 41A. After that, the wiring is carried out by bending it to the side of the car room 30 on the front side of the car room 30 . In this case, there is a problem that the number of bends is large and the wiring area of the tail cord 80 at that portion becomes large. Furthermore, since the space under the floor is limited, if the tail cord is gently bent at the bent portion, there is a problem that it affects the mounting position of other members.

On the other hand, in this embodiment, by providing the wiring bracket 75, the bending portion in the plane parallel to the width direction of the tail cord 80 can be limited to the arrow b portion shown in FIG. By providing the wiring bracket 75 in this manner, the wiring route is simplified, the number of times the tail cord 80 is bent is reduced, and an increase in the wiring area at the bending location of the tail cord 80 under the floor can be prevented. This also facilitates wiring work.

Further, conventionally, a weighing device for load detection was provided on the lower surface of the car floor 10 . For example, this weighing device employs a configuration in which a pair of members connecting between the vibration isolating members 46 provided on the

floor support beams

41A and 41B and a sensor are attached to the member connecting the pair of members. Therefore, when such a weighing device for load detection is attached to the lower surface of the car floor 10, it is not possible to secure a space for arranging the wiring bracket 75 to extend in the front-rear direction as in the present embodiment. There is In that case, the space for arranging the wiring bracket 75 of the present embodiment can be secured by directly attaching the sensor for load detection to the lower surface of the car floor 10 or providing a load detection device on the car. can do.

The above-described embodiments have been described in detail for easy-to-understand description of the present invention, and are not necessarily limited to those having all the described configurations. For example, it is possible to replace part of the configuration of the embodiment with another configuration, or to add another configuration to the configuration of the embodiment. Moreover, it is possible to add, delete, or replace a part of the configuration of the embodiment with another configuration.

DESCRIPTION OF SYMBOLS 1... Elevator, 2... Main rope, 3... Car, 4A, 4B... Car lower pulley, 6... Weight side pulley, 10... Car floor, 11... Floor frame, 12... Floor body, 20... Car frame, 21A, 21B... Vertical frame, 22... Upper frame, 23... Lower frame, 30... Car room, 41A, 41B... Floor support beam, 46... Anti-vibration member, 71... Wiring fixing bracket, 72... Fixing piece, 73... Wire clamping Part 74 Surplus length processing bracket 75 Wiring bracket 79 Wiring fixing part 80 Tail cord 100 Control box

Claims

a cage having an entrance in front in the longitudinal direction and a control box in the upper part in the vertical direction;
a car frame to which the car is fixed;
a wiring bracket fixed to a lower frame provided below the car frame in the vertical direction,
The wiring bracket extends from the rear to the front on the side opposite to the front where the doorway is installed, and wires the tail cord connected to the control box while supporting it from the rear to the front.
The car according to claim 1, wherein the wiring bracket has bent portions that are bent upward in the up-down direction at both ends in the left-right direction perpendicular to the front-rear direction and the up-down direction.
2. The car according to claim 1, further comprising a wiring fixing portion for fixing the tail cord on the rear side of the wiring bracket in the front-rear direction and on the lower surface side in the vertical direction.
A surplus length processing bracket arranged on the front end side in the front-rear direction of the wiring bracket,
The excess length processing bracket is
The car according to claim 1, wherein the length of the tail cord is adjusted by supporting the tail cord extending in the left-right direction and being wired while being supported by the wiring bracket in the left-right direction.
The car according to claim 4, wherein the excess length processing bracket is fixed to the wiring bracket.
a cage having an entrance in front in the longitudinal direction and a control box in the upper part in the vertical direction;
a car frame to which the car is fixed;
A tail cord is fixed to the lower frame provided below the car frame in the vertical direction, extends from the rear to the front on the side opposite to the front where the doorway is installed, and connects to the control box from the rear to the front. An elevator having a cab comprising a wiring bracket for supporting wiring and a car.