JP7587046B2 - Cars and elevators - Google Patents

Description

The present invention relates to cars and elevators.

Conventionally, in elevators, an instrument box is installed on the top of the car to house the elevator control panel, door opening/closing control device, interior lighting device, etc. Typically, the instrument box is installed on the top of the elevator car on the door side. Patent Document 1 discloses a configuration in which the instrument box is installed horizontally with its longitudinal direction parallel to the mounting base for the door opening device provided on the top of the car door side.

JP 2002-128423 A

Thus, in conventional elevators, the tool box is located above the car door. Meanwhile, the tail cord connected to the control box is wired from the wall on the opposite side of the hoistway from the side where the landing doors are located. Therefore, in order to connect the tail cord wired from the hoistway side to the tool box located above the car door of the elevator car, it is necessary to wire the tail cord from the rear to the front in the fore-and-aft direction of the car under the floor of the car, and then wire it toward the upper side of the car.

However, because there is limited space under the floor of the car, the task of running the tail cord from the rear to the front of the car is difficult to work with and takes a lot of time. Also, depending on the position where the tail cord is run, the number of times it needs to be bent increases, which puts a lot of strain on the tail cord.

Therefore, the present invention aims to provide a car and elevator that can simplify the wiring route for the tail cord under the floor of the car and shorten the work time.

In order to solve the above problems and achieve the object of the present invention, the elevator car of the present invention comprises a car chamber having an entrance at the front in the longitudinal direction and a control box at the top in the vertical direction, and a car frame to which the car chamber is fixed. It also comprises a wiring bracket that is fixed to a lower frame provided below the car frame in the vertical direction, extends from the rear to the front on the opposite side to the front where the entrance is provided, and supports and wires a tail cord that connects to the control box from the rear to the front.

The elevator of the present invention has the above-mentioned elevator car.

According to the present invention, the wiring route for the tail cord under the car floor is simplified, thereby shortening the work time.

1 is a schematic diagram showing an elevator according to one embodiment of the present invention; 2 is an enlarged side view of an elevator car 3 according to one embodiment of the present invention. FIG. 1 is an oblique view of the arrangement of a tail cord 80 in a car 3, seen from above. 1 is an oblique view showing the arrangement of a tail cord 80 in a car 3 from below. FIG. 1 is a perspective view showing the arrangement of a tail cord 80 from above with the car floor 10 removed. FIG. 1 is a perspective view showing the arrangement of a tail cord 80 from below with the car floor 10 removed. FIG. 1 is a diagram showing the arrangement of the tail cords 80 on the car frame 20 as viewed from the front (front). 8 is a cross-sectional view of the car frame 20 taken along line B-B in FIG. 7 . FIG. 8 is a cross-sectional view of the car frame taken along line A-A in FIG. 7 . 1 is a side view of the arrangement of the tail cords 80 on the cage frame 20. FIG. 11 is a view of the car frame 20 as seen from a cross section taken along line CC in FIG. 10 .

Below, an example of a car and elevator according to an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following example. In each of the drawings described below, common parts are given the same reference numerals.

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. 1. Fig. 1 is a schematic configuration diagram showing the elevator of the present embodiment.

In this embodiment, as shown in Figure 1, an elevator 1 using a so-called 2:1 roping system will be described as an example. Note that the elevator of the present invention is not limited to elevators using the 2:1 roping system, but can also be applied to elevators using the 1:1 roping system.

As shown in Figure 1, elevator 1 has a car 3 that rises and falls in the hoistway, a main rope 2, a hoist 90, and a counterweight 5 suspended from car 3 via the main rope 2. In addition, car 3 has a tail cord 80 (see Figure 2) that supplies power to a control box 100 (see Figure 2) installed at the top of car 3. The control box 100 houses various control devices such as a door section 8 and lighting devices. Hereinafter, the direction in which car 3 and counterweight 5 rise and fall is referred to as the up and down direction.

Passengers and luggage are carried on the car 3. Under-car pulleys 4A and 4B are provided at the bottom in the vertical direction of the car 3. A main rope 2 is wound around the under-car pulleys 4A and 4B. A weight-side pulley 6 is provided on the counterweight 5. The main rope 2 is wound around the weight-side pulley 6.

The hoist 90 is installed at the top of the elevator shaft. The hoist 90 has a sheave around which the main rope 2 is wound. The hoist 90 raises and lowers the car 3 and counterweight 5 in a bucket-like manner via the main rope 2.

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 towards the under-car pulleys 4A and 4B. The main rope 2 is then wound from one end around the under-car pulleys 4A and 4B, the sheave of the hoisting machine 90, and the weight-side pulley 6, in that order.

The other end of the main rope 2, which extends from the weight-side pulley 6 toward the top of the hoistway, is attached to the top of the hoistway, just like the one end. When the hoisting machine 90 is driven, the car 3 and the counterweight 5 move up and down in the hoistway.

The car 3 also has a car floor 10 which forms the floor surface of the car chamber 30, side panels 7, a ceiling 9, and a door section 8. The car 3 also has a car frame 20 (see Figure 2) which supports the car floor 10. The car floor 10 and the ceiling 9 are arranged opposite each other in the vertical direction. The side panels 7 are erected around the car floor 10 and the ceiling 9. An entrance is provided in one of the side panels 7 which surround the periphery of the car floor 10. A door section 8 is installed at this entrance so that it can be opened and closed. The car floor 10, side panels 7, ceiling 9, and door section 8 form the car chamber 30 in which passengers and baggage are carried in the car 3.

2. Car Fig. 2 is an enlarged side view of the car 2 of the elevator 1 of this embodiment. Fig. 3 is a perspective view of the arrangement of the tail cord 80 in the car 3 as seen from above, and Fig. 4 is a perspective view of the arrangement of the tail cord 80 in the car 3 as seen from below. Fig. 5 is a perspective view of the arrangement of the tail cord 80 as seen from above with the car floor 10 removed, and Fig. 6 is a perspective view of the arrangement of the tail cord 80 as seen from below with the car floor 10 removed. Fig. 7 is a view of the arrangement of the tail cord 80 in the car frame 20 as seen from the front (front). Fig. 8 is a view of the car frame 20 as seen from a cross section along the line B-B in Fig. 7, and Fig. 9 is a view of the car frame as seen from a cross section along the line A-A in Fig. 7. 10 is a side view of the arrangement of the tail cords 80 in the cage frame 20, and FIG. 11 is a cross-sectional view of the cage frame 20 taken along line CC in FIG.

In this embodiment, as shown in Figures 2 to 11, the front/rear, up/down, left/right directions are defined based on the line of sight of the user of the elevator 1 facing the car 3.

As shown in Figures 2 to 4, the car 3 comprises a car frame 20 and a car chamber 30 arranged inside the car frame 20. The floor of the car chamber 30 is formed by the car floor 10. As shown in Figures 5 and 6, the car 3 also comprises floor support beams 41A, 41B, a wiring bracket 75, and an excess length handling bracket 74. The floor support beams 41A, 41B support the car floor 10 on the car frame 20. The wiring bracket 75 wires the tail cord 80. The excess length handling bracket 74 adjusts the excess length of the tail cord 80.

[Basket frame]
The car frame 20 has an upper frame 22 arranged at the upper part of the car chamber 30, a lower frame 23 arranged at the lower part of the car chamber 30, and a pair of vertical frames 21A, 21B that connect end parts of the upper frame 22 and the lower frame 23 at the side parts of the car chamber 30. As shown in Fig. 2, the car frame 20 is arranged shifted forward from the center position of the car chamber 30 in the front-to-rear direction. Although not shown in Figs. 2 to 11, a pair of under-car pulleys 4A, 4B (see Fig. 1) are arranged at the center position of the car chamber 30 in the front-to-rear direction.

The upper frame 22 is composed of members extending in the left-right direction, and both ends of the upper frame 22 in the longitudinal direction (left-right direction) are connected to the upper ends of the pair of vertical frames 21A, 21B by bolts. The lower frame 23, like the upper frame 22, is also composed of members extending in the left-right direction, and both ends of the lower frame 22 in the longitudinal direction (left-right direction) are connected to the lower ends of the pair of vertical frames 21A, 21B by bolts. The vertical frames 21A, 21B are composed of members extending in the vertical direction, and are positioned to sandwich the cage chamber 30 in the left-right direction. The cage chamber 30 is installed on the cage frame 20, which is composed of the upper frame 22, the lower frame 23, and the pair of vertical frames 21A, 21B.

In addition, of the pair of vertical frames 21A, 21B, one vertical frame 21A is provided with a plurality of (three in FIG. 2) wiring fixing brackets 71 at a predetermined interval in the longitudinal direction (vertical direction). The wiring fixing bracket 71 is composed of a plate-like member extending in the front-rear direction, and is supported in a cantilever manner by fixing only one end to the vertical frame 21A. The wiring fixing bracket 71 is arranged to extend forward in the front-rear direction from the vertical frame 21A. The wiring fixing bracket 71 fixes the tail cord 80 on the front-rear direction front side of the vertical frame 21A. A fixing piece 72 for fixing the wiring to the wiring fixing bracket 71 is fixed to the wiring fixing bracket 71 by a bolt. The tail cord 80 arranged in the vertical direction along the side of the car chamber 30 is supported by the vertical frame 21A by being sandwiched between the wiring fixing bracket 71 and the fixing piece 72.

[Floor support beam]
The floor support beams 41A, 41B are beams for supporting the car floor 10 on the upper part of the lower frame 23. In this embodiment, the pair of floor support beams 41A, 41B are fixed by bolts to the upper part of both end sides in the left-right direction of the lower frame 23. Each of the floor support beams 41A, 41B is composed of a member extending in the front-rear direction and is disposed horizontally in a direction perpendicular to the lower frame 23.

An anti-vibration member 46 is disposed at each of the longitudinal ends of each of the floor support beams 41A and 41B (see FIG. 2). The anti-vibration member 46 is made of, for example, anti-vibration rubber. The car floor is supported by the upper part of the floor support beams 41A and 41B via the anti-vibration member 46.

In addition, of the pair of floor support beams 41A, 41B, the left floor support beam 41A in the left-right direction is provided with a wiring clamping portion 73 at a position overlapping the wiring fixing bracket 71 in the up-down direction. The wiring clamping portion 73 clamps and supports the tail cord 80, which is wired along a wiring bracket 75 and an excess length processing bracket 74 described below and is raised along the vertical frames 21A, 21B of the car frame 20, between the side surfaces of the floor support beam 41A.

[Basket floor]
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 made of a rectangular plate-like member. The floor body 12 may be made of a single plate member, or may be made of a plurality of plate members stacked together.

The floor frame 11 extends in the front-to-rear direction of the car floor 10 and has a pair of side frames 11A, 11B for fixing the floor body 12 to the floor support beams 41A, 41B. Furthermore, the floor frame 11 extends in the left-to-right direction of the car floor 10 and has a front frame 11C that protects the front side of the floor body 12, and a rear frame 11D that extends in the left-to-right direction of the car floor 10 and protects the rear side of the floor body 12.

The side frames 11A, 11B are configured to have a length approximately equal to the length of the floor body 12 in the front-to-rear direction. The side frames 11A, 11B are configured as plate-shaped members bent at right angles to have a lower surface portion that is placed on the upper part of the vibration-isolating members 46 that are placed on the upper side of the floor support beams 41A, 41B, and a side surface portion that is configured to a length that covers the side surface of the floor body. The side frames 11A, 11B are positioned so that their lower surface portions abut against the vibration-isolating members 46 provided on the floor support beams 41A, 41B, and their side surfaces are fixed to the vertical frames 21A, 21B of the car frame 20.

The front frame 11C and the rear frame 11D are configured to have a length approximately 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 underside of the floor body 12 at its lower end in the up-down direction, and is fixed to a pair of side frames 11A, 11B at both ends in the left-right direction. The front frame 11C is fixed to a pair of side frames 11A, 11B at both ends in the left-right direction. The front frame 11C and the rear frame 11D are configured to have shapes suitable for their respective uses. For example, a door sill (not shown) is fixed to the upper surface of the front frame 11C in the up-down direction.

[Wiring bracket]
As shown in Fig. 5 to Fig. 8, the wiring bracket 75 is a member on which the tail cord 80 is placed on the upper surface in the vertical direction and wired in the front-rear direction, and is composed of a plate-like member extending in the front-rear direction relative to the lower frame 23. The wiring bracket 75 is used to allow the tail cord 80, which is wired from the rear side of the car 3, to reach the control box 100 (see Fig. 2) installed at the upper front of the car 3. For this reason, it is composed of 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. Such a wiring bracket 75 is fixed to the lower frame 23 by bolts, as shown in Fig. 7.

The wiring bracket 75 is formed of a member with a U-shaped cross section, with both ends in the left-right direction (width direction) bent at 75a, 75b upward in the up-down direction. In this embodiment, as shown in FIG. 8, the right bent portion 75a in the left-right direction is not provided in the wiring bracket 75 forward of the lower frame 23 in the front-rear direction. This allows the wiring of the tail cord 80 to be bent to the right in the left-right direction.

The vertical height of the bent portions 75a, 75b is configured so as not to reach the car floor 10, and is configured so as to be able to restrain the movement of the tail cord 80 in the left-right direction. Furthermore, as shown in Fig. 6, a wiring fixing portion 79 is provided on the vertical underside of the rear end portion in the front-to-rear direction of the wiring bracket 75. The wiring fixing portion 79 fixes the tail cord 80 emerging from the inner wall surface of the elevator shaft facing the rear of the car 3 to the wiring bracket 75.

[Excess length handling bracket]
The slack handling bracket 74 is made of a plate-like member extending parallel to the lower frame 23. The slack handling bracket 74 is fixed to the wiring bracket 75 with a bolt, in front of the lower frame 23. The slack handling bracket 74 is a member that places the tail cord 80, which has been wired to the wiring bracket 75, on its upper surface in the vertical direction and guides it to the rising position of the tail cord 80 (a position below the control box 100). The slack handling bracket 74 is made of a plate-like member extending parallel to the lower frame 23. The slack handling bracket 74 also processes (adjusts) the slack portion of the tail cord by folding the tail cord 80 in the left-right direction, as shown in region a of FIG. 7 .

6 and 9, the slack processing bracket 74 has a flat portion 74b and a bent portion 74a. The flat portion 74b has a horizontal surface for placing the tail cord 80. The bent portion 74a is bent upward in the vertical direction at the rear end of the flat portion 74b in the front-rear direction (width direction). The vertical height of the bent portion 74a is a height that does not hinder the installation of the wiring bracket 75. The height of the bent portion 74a is configured to a height that can restrain the movement of the bent tail cord 80 backward in the front-rear direction. In addition, the length of the slack processing bracket 74 in the left-right direction is set to a length that does not interfere with other components installed under the floor. In addition, the left end of the slack processing bracket 74 in the left-right direction is adjusted to a position that overlaps in the vertical direction with the left end of the floor support beams 41A and 41B arranged on the left side.

3. Method of arranging the tail cord Next, a method of arranging the tail cord 80 in the car 3 of this embodiment will be described. Although not shown, the tail cord 80 extends from the inner wall of the elevator shaft located on the opposite side to the entrance/exit of the car 3 to the car 3 side. For example, the tail cord 80 is fixed to the inner wall at a vertically intermediate position in the elevator shaft and connected to a control panel (not shown). The worker wires the tail cord 80, which is wired from the inner wall surface of the elevator shaft, to the control box 100 installed at the upper front of the car 3, and connects it to various control devices in the control box 100. This wiring work is also performed in a state where 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 underside of the wiring bracket 75. Next, the worker arranges the tail cord 80 from the end side along the wiring bracket 75. At this time, as shown by arrow c in FIG. 9, the tail cord 80 is pushed forward from the rear of the wiring bracket 75. In this embodiment, since the bending portions 75a, 75b are provided at the left and right ends of the wiring bracket 75, the movement of the tail cord 80 in the left and right direction is restricted. Therefore, the tail cord 80 can be easily arranged up to the front of the wiring bracket 75 with only the pushing force of the worker.

Next, the worker routes the tail cord 80, which has been pushed forward of the wiring bracket 75, to the right in the left-right direction along the excess length processing bracket 74. In this embodiment, the wiring bracket 75 does not have a bending portion at the front in the front-to-rear direction or on the right side in the left-to-right direction, so that the bending portion of the tail cord 80 can be made gentler, and the burden on the tail cord 80 can be reduced.

Then, while adjusting the excess length of the tail cord 80, fold the tail cord 80 back to the left on the excess length handling bracket 74 as shown in area a of Figure 7. The folded back portion of the tail cord 80 is arranged so that it overlaps vertically on the upper part of the excess length handling bracket 74.

Next, the tail cord 80 is taken out to the left side surface of the car 3 in the left-right direction and lifted upward in the vertical direction along the side surface of the car chamber 30 while being fixed to the wiring clamping portion 73 and each of the fixing pieces 72 provided on the multiple wiring fixing brackets 71. After that, the tail cord 80 lifted to the top of the car chamber 30 is connected to the control box 100 installed at the top of the car chamber 30. This completes the wiring work for the tail cord 80.

In this embodiment, the tail cord 80 can be wired by pushing it from the rear to the front of the car chamber 30 using a wiring bracket 75 with a U-shaped cross section. This makes it easy to perform wiring work in the narrow space between the car floor 10 and the lower frame 23. Conventionally, when adjusting the length of the tail cord 80, the adjustment part of the tail cord 80 was processed by pushing it under the car floor 10, etc. In contrast, in this embodiment, the length of the tail cord 80 can be adjusted using the slack processing bracket 74. This has the effect of making it easier to adjust the length, as well as improving the appearance.

The tail cord 80 is configured as a flat band having a predetermined width. Therefore, when changing the wiring direction of the tail cord 80, if the tail cord 80 is bent in a plane parallel to the width direction, the radius of the bent portion becomes large, which causes problems such as a large wiring area and difficulty in wiring. On the other hand, in a conventional car, the tail cord 80 is fixed to the lower surface of the car frame 20, then bent toward the floor support beam 41A and wired along the floor support beam 41A. After that, the tail cord 80 is bent further toward the side of the car room 30 at the front side to wire it. 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 part is large. Furthermore, since the space under the floor is limited, if the tail cord is bent gently at the bent part, it affects the mounting position of other members.

In contrast, 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 portion indicated by the arrow b in Figure 8. In this way, by providing the wiring bracket 75, the wiring route is simplified, the number of bending times of the tail cord 80 is reduced, and an increase in the wiring area at the bending points of the tail cord 80 under the floor can be prevented. This also makes the wiring work easier.

Also, conventionally, a weighing device for load detection has been provided on the underside of the car floor 10. For example, this weighing device is configured to have a pair of members connecting the vibration isolation members 46 provided on the floor support beams 41A, 41B, and a sensor attached to the member connecting the pair of members. Therefore, when such a weighing device for load detection is attached to the underside of the car floor 10, it may not be possible to secure space to arrange the wiring bracket 75 by extending it in the front-rear direction, as in this embodiment. In that case, the space for arranging the wiring bracket 75 of this embodiment can be secured by directly attaching the load detection sensor unit to the underside of the car floor 10 or by providing a load detection device on the car.

The above-mentioned embodiment has been described in detail to clearly explain the present invention, and is not necessarily limited to having all of the configurations described. For example, it is possible to replace part of the configuration of the embodiment with another configuration, and it is also possible to add another configuration to the configuration of the embodiment. It is also possible to add, delete, or replace part of the configuration of the embodiment with another configuration.

1... elevator, 2... main rope, 3... passenger car, 4A, 4B... car under 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 chamber, 41A, 41B... floor support beam, 46... vibration isolation member, 71... wiring fixing bracket, 72... fixing piece, 73... wiring clamping portion, 74... excess length processing bracket, 75... wiring bracket, 79... wiring fixing portion, 80... tail cord, 100... control box

Claims (5)

a car having an entrance at the front in the front-rear direction and a control box at an upper portion in the up-down direction;
a car frame to which the cab is secured;
A wiring bracket fixed to a lower frame provided below the car frame in the up-down direction;
a slack processing bracket arranged on a front end side in a front-rear direction of the wiring bracket ,
The wiring bracket extends from the rear to the front, opposite to the front where the entrance is installed, and wires a tail cord connected to the control box while supporting it from the rear to the front ,
The excess length processing bracket is
The tail cord extends in the left-right direction and is supported in the left-right direction while being supported by the wiring bracket, thereby adjusting the length of the tail cord.
Car. The car according to claim 1 , wherein the wiring bracket has bent portions at both ends in a left-right direction perpendicular to the front-rear direction and the up-down direction that are bent upward in the up-down direction. The passenger car according to claim 1, further comprising a wiring fixing portion for fixing the tail cord, the wiring bracket being disposed rearward in the front-rear direction and on a lower surface side in the up-down direction. The passenger car according to claim 1 , wherein the excess length handling bracket is fixed to the wiring bracket. a car having an entrance at the front in the front-rear direction and a control box at an upper portion in the up-down direction;
a car frame to which the cab is secured;
a wiring bracket that is fixed to a lower frame that is provided below the car frame in the up-down direction, extends from the rear to the front on the opposite side to the front where the entrance is provided, and wires a tail cord that is connected to the control box while supporting it from the rear to the front;
a slack handling bracket arranged on a front end side in a front-rear direction of the wiring bracket;
The car has a
The excess length processing bracket is
The tail cord extends in the left-right direction and is supported in the left-right direction while being supported by the wiring bracket, thereby adjusting the length of the tail cord.
Elevator.

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