WO2017037910A1

WO2017037910A1 - Elevator counterweight device and method for improving elevator counterweight device

Info

Publication number: WO2017037910A1
Application number: PCT/JP2015/075051
Authority: WO
Inventors: 良直高橋
Original assignee: 三菱電機株式会社
Priority date: 2015-09-03
Filing date: 2015-09-03
Publication date: 2017-03-09

Abstract

An elevator counterweight device is provided with an upper frame (1), a lower frame (3), a pair of vertical frames (5), and a weight (9). A central vertical frame (7) is provided between the pair of vertical frames (5). The upper end of the pair of vertical frames (5) and the upper end of the central vertical frame (7) are connected to the upper frame (1). The lower end of the pair of vertical frames (5) and the lower end of the central vertical frame (7) are connected to the lower frame (3).

Description

Elevator counterweight device and method of repairing elevator counterweight device

The present invention relates to an elevator counterweight device and an elevator counterweight device repair method.

In the elevator hoistway, a car and a counterweight device are provided so that they can be raised and lowered. These cages and counterweight devices are connected to a rope. When the rope is driven by the hoisting machine, the car and the counterweight device are moved up and down in directions opposite to each other.

For example, as disclosed in Patent Document 1, the counterweight device includes a frame including an upper frame, a lower frame, and a plurality of vertical frames connecting the upper frame and the lower frame. A plurality of weights were accommodated in the frame.

Japanese Unexamined Patent Publication No. 7-330253

In order to satisfy the latest seismic performance, a counterweight device with higher seismic performance is required.

The present invention has been made in view of the above, and an object thereof is to provide a counterweight device having higher seismic performance.

The present invention for achieving the above-mentioned object is an elevator counterweight device including an upper frame, a lower frame, a pair of vertical frames, and a weight, and between the pair of vertical frames. A central vertical frame is provided, and an upper end of the pair of vertical frames and an upper end of the central vertical frame are connected to the upper frame, and a lower end of the pair of vertical frames and the central vertical frame The lower end of the elevator is an elevator weight device connected to the lower frame.
Another embodiment of the present invention for achieving the same object includes an upper frame, a lower frame, a pair of vertical frames, a T-shaped frame, and a weight, and the T-shaped frame includes a horizontal portion and a vertical portion. The horizontal portion is bridged to the pair of vertical frames, the lower end of the vertical portion is connected to the lower frame, and the upper end of the vertical portion is connected to the horizontal portion. A method for repairing a previous counterweight device, the step of removing the weight from the counterweight device before the repair, the step of removing the T-shaped frame, the step of opening a mounting hole in the upper frame, A step of fastening the upper end of the central vertical frame to the upper frame, and a step of fastening the lower end of the central vertical frame to the lower frame; and a step of reloading the weight.

According to the present invention, a counterweight device with higher seismic performance can be provided.

It is the figure which showed the structure and material dynamics model of the elevator counterweight apparatus of Embodiment 1 of this invention. It is the figure which showed the center vertical frame in the counterweight apparatus of the elevator of this Embodiment 1. FIG. It is the figure which showed the structure and material mechanics model before the improvement to the balance weight apparatus of the elevator of this Embodiment 1. FIG. It is the figure which showed the state in the middle of repair to the counterweight apparatus of the elevator of this Embodiment 1. FIG. It is the figure which showed the center vertical frame in the counterweight apparatus of the elevator of Embodiment 2 of this invention. It is the figure which showed the structure and material dynamics model of the elevator balance weight apparatus of Embodiment 3 of this invention.

Hereinafter, embodiments of an elevator counterweight device and an elevator counterweight device repair method according to the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts. In the description of the present invention, it is assumed that the vertical and horizontal directions in FIG.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a structure and a material dynamics model of an elevator counterweight device according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing a central vertical frame in the elevator counterweight device of the first embodiment.

The general configuration of an elevator to which the present invention is applied will be described. The elevator includes a hoistway extending vertically, and a car and a counterweight device provided inside the hoistway so as to be movable up and down. These cages and counterweight devices are suspended from a rope driven by a hoisting machine. When the rope is driven by the hoisting machine, the car and the counterweight device are moved up and down in directions opposite to each other.

The elevator counterweight device includes at least one upper frame 1, at least one lower frame 3, at least a pair of vertical frames 5, a central vertical frame 7, and a weight 9. The central vertical frame 7 is arranged between the pair of vertical frames 5 in the left-right direction.

The upper frame 1 and the lower frame 3 extend in the horizontal direction with an interval in the vertical direction. The upper end of the pair of vertical frames 5 and the upper end of the central vertical frame 7 are all connected to the upper frame 1. The lower end of the pair of vertical frames 5 and the lower end of the central vertical frame 7 are all connected to the lower frame 3.

A guide shoe 11 is provided on each of the upper frame 1 and the lower frame 3. The guide shoe 11 engages with a weight guide rail (not shown) that extends vertically in the hoistway. In the counterweight device, the lifting direction and the lifting posture are guided by the weight guide rail through the guide shoes 11. The upper frame 1 is connected to one end of a rope 13 driven by a hoisting machine (not shown).

The central vertical frame 7 is an example, but includes a pair of U-shaped main members 21 and a pair of plate members 23. The pair of U-shaped main members 21 are arranged back to back, that is, with the U-shaped openings facing outward. Further, the ends of the weights 9 are accommodated inside the U-shapes of the main members 21. A pair of plate member 23 is being fixed to the upper part of the said main member 21 so that the upper part of a pair of main member 21 may be pinched | interposed from an outer side.

In the central vertical frame 7, the pair of main members 21 extend slightly above the area where the weights 9 are loaded. In the vicinity of the upper frame 1 in the central vertical frame 7, a pair of plate members 23 are arranged at an interval. That is, the upper surfaces of the pair of main members 21 are below the lower surface of the upper frame 1, and the upper surfaces of the pair of main members 21 are separated from the lower surface of the upper frame 1. A pair of plate members 23 are connected to the upper frame 1. In other words, a space is secured between the pair of plate members 23 and between the upper surface of the pair of main members 21 and the lower surface of the upper frame 1. As a result, the weight 9 can be held over its entire height region to prevent the weight 9 from falling, and in the vicinity of the upper frame 1, interference between the central vertical frame 7, the rope terminal and the suspension vehicle can be avoided. It is also possible to secure a maintenance space.

Next, a method of repairing the elevator counterweight device of the first embodiment described above will be described. FIG. 3 is a diagram showing a structure and a material dynamics model before the modification to the elevator counterweight device of the first embodiment.

As an example, the counterweight device before refurbishment includes an upper frame 1, a lower frame 3, a vertical frame 5, and a T-shaped frame 31. The T-shaped frame 31 includes a horizontal portion 31a and a vertical portion 31b with respect to the horizontal portion 31a. The horizontal portion 31a is bridged with a pair of left and right vertical frames 5. The lower end of the vertical part 31b is connected to the lower frame 3, and the upper end of the vertical part 31b is connected to the horizontal part 31a. Weights 9 are loaded on the left and right of the vertical portion 31b.

In such a counterweight device before renovation, bending stress is generated in the vertical frame 5 and the vertical portion 31b when a horizontal seismic force is generated in the left-right direction in FIG. 3, as in the material mechanics model on the right side in FIG. The reaction force at the upper end of the vertical portion 31b acts as W1 and W2 on the left and right vertical frames 5 through the horizontal portion 31a. For this reason, in the case of the material dynamic model of FIG. 3, the maximum stress is generated in the vertical frame 5 on the left side of the paper surface of FIG.

As a procedure of the repair method, first, a process of lifting the car using a chain block or the like to the counterweight device before the repair or a process of making the car not fall using an emergency stop is performed.

Subsequently, a process of removing the weight 9 from the counterweight device before the repair is performed. Further, a step of removing the T-shaped frame 31 is performed.

FIG. 4 shows a state in which the weight 9 is removed and the T-frame 31 is removed from the counterweight device before renovation as described above. Next, at least a process of processing the mounting holes in the upper frame 1 at least is performed. In the upper frame 1, a pair of mounting holes 41 for mounting the upper end of the central vertical frame 7 relating to the first embodiment is formed. Such a process is performed at an elevator installation site. In addition, when the correspondence to the center vertical frame concerning Embodiment 2 mentioned later is shown in this FIG. 4, as shown with the referential mark 43, a pair of attachment holes 43 wider than a pair of attachment holes 41 are provided. become. On the other hand, since there is already a mounting hole 45 for the lower end of the T-shaped frame 31 with respect to the lower frame 3, the pair of mounting holes 45 are connected to the lower end of the central vertical frame 7 of the first embodiment and the present embodiment. For the attachment of the lower end of the central vertical frame of the form 2, the attachment hole may be newly provided if necessary.

Subsequently, a process of attaching the central vertical frame 7 is performed. Specifically, the upper end of the central vertical frame 7 is fastened to the upper frame 1 with a bolt or the like, and the lower end of the central vertical frame 7 is fastened to the lower frame 3 with a bolt or the like. Further, a process of placing a weight 9 is performed. The weights 9 that have been previously unloaded are reloaded inside the frame structures of the assembled upper frame 1, lower frame 3, vertical frame 5, and central vertical frame 7.

In the elevator counterweight device thus modified, the central vertical frame 7 is directly fastened to the upper frame 1, and the material mechanics model is considered as a three-end simple support beam model as shown in FIG. be able to. As a result, the vertical frame 5 on the left side of the drawing reduces the reaction force acting from the horizontal portion 31a of the T-shaped frame 31 in the configuration before the repair, and as a result, the generated stress decreases. That is, the load W1 in the material dynamic model of FIG. As a result, a counterweight device having a higher seismic performance than the structure before the repair can be obtained. It is also possible to reduce the stress of the central vertical frame by increasing the thickness of the central vertical frame or changing the cross-sectional dimensions to improve the cross-sectional performance over the existing central vertical frame. . In the past, when trying to satisfy the latest seismic performance with the existing counterweight device, the entire existing counterweight device had to be replaced with the latest counterweight device. For this reason, the installation work takes time and labor, and there is a problem that a large amount of waste is generated. On the other hand, in the elevator counterweight device of the first embodiment, the material mechanics model is used while the upper frame 1, the lower frame 3 and the vertical frame 5 are continuously used only by drilling at least the upper frame. Therefore, the installation work at the site can be greatly reduced, and the waste can be significantly reduced.

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described. FIG. 5 is a diagram showing a central vertical frame in the elevator counterweight device according to Embodiment 2 of the present invention. The second embodiment is the same as the first embodiment described above except for the contents described below.

The central vertical frame 107 relating to the second embodiment includes a pair of U-shaped main members 121, a pair of U-shaped sub members 123, and a widening member 125. The pair of U-shaped main members 121 are arranged back to back, that is, so that the U-shaped opening faces outward. Further, the end of the weight 9 is accommodated inside the U-shape of each main member 121. The pair of U-shaped sub members 123 are arranged so that the U-shaped opening faces inward.

The lower ends of the pair of U-shaped main members 121 are fastened to the lower frame 3. The upper ends of the pair of U-shaped main members 121 are connected to the center of the widening member 125. The lower ends of the pair of U-shaped sub members 123 are connected to the corresponding end portions of the widening member 125. The upper ends of the pair of U-shaped sub members 123 are fastened to the upper frame 1. As described above, the upper ends of the pair of U-shaped sub members 123 are fixed to the upper frame 1 by inserting bolts or the like into the pair of mounting holes 43 shown in FIG.

In the central vertical frame 107, the pair of main members 121 extend slightly above the area where the weights 9 are loaded. In the vicinity of the upper frame 1 in the central vertical frame 107, a pair of U-shaped sub-members 123 are arranged at intervals. That is, the upper surface of the pair of main members 21 and the upper surface of the widening member 125 are below the lower surface of the upper frame 1, and the upper surface of the pair of main members 21 and the upper surface of the widening member 125 are the lower surface of the upper frame 1. Away from. In other words, a space is secured between the pair of U-shaped sub-members 123 and between the upper surface of the widening member 125 and the lower surface of the upper frame 1. As a result, the weight 9 can be held over its entire height region to prevent the weight 9 from falling, and in the vicinity of the upper frame 1, interference between the central vertical frame 7, the rope terminal and the suspension vehicle can be avoided. It is also possible to secure a maintenance space.

According to the second embodiment configured as described above, the same advantages as those of the first embodiment described above can be obtained.

Embodiment 3 FIG.
Next, a third embodiment of the present invention will be described. FIG. 6 is a diagram showing the structure and material dynamics model of the elevator counterweight device according to Embodiment 3 of the present invention. In addition, this Embodiment 3 shall be the same as that of Embodiment 1 mentioned above except the content demonstrated below.

The elevator counterweight device of the third embodiment further includes a central cross beam 127. The central cross beam 127 extends in the same direction as the upper frame 1 and the lower frame 3. Further, the central horizontal beam 127 connects all of the two vertical frames and one central vertical frame in the vicinity of the middle portion in the height direction of the vertical frame 5.

According to the third embodiment configured as described above, the same advantages as those of the first embodiment described above can be obtained. Furthermore, in the elevator counterweight device of the third embodiment, as shown in the material dynamic model of FIG. 6, the new horizontal beam is processed on-site into all two vertical frames and one central vertical frame. By fastening, the load of the central vertical frame can be shared by the right vertical frame in addition to the vertical frame on the left side of the paper, and as a whole, further relaxation of stress and deflection is possible.

Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

The invention of the present application includes combinations of some or all of the configurations of any one or more of the embodiments described above with other embodiments.

In addition, the present invention is not limited to a mode in which the central vertical frame is replaced locally on the existing counterweight device, but also in a new elevator, the aspect of implementing the structure of the counterweight device as the configuration of the above-described embodiment from the beginning. Is also included. According to this, even in a newly installed elevator, a counterweight device having high earthquake resistance can be obtained from the beginning.

Also, the main member of the central vertical frame is not limited to a U-shape. Therefore, for example, it is possible to employ a central vertical frame using a pair of Y-shaped main members.

1 Upper frame, 3 Lower frame, 5 Vertical frame, 7, 107 Central vertical frame, 9 Weight, 21, 121 Main member, 23 Plate member, 123 Sub member, 125 Wide member, Central transverse beam 127.

Claims

An elevator counterweight device comprising an upper frame, a lower frame, a pair of vertical frames, and a weight,
A central vertical frame is provided between the pair of vertical frames,
An upper end of the pair of vertical frames and an upper end of the central vertical frame are connected to the upper frame, and a lower end of the pair of vertical frames and a lower end of the central vertical frame are connected to the lower frame Being
Elevator counterweight device.
The central vertical frame includes a pair of U-shaped main members and a pair of plate members,
The pair of U-shaped main members are arranged such that the U-shaped opening faces outward,
The pair of plate members are fixed to the upper part of the main member so as to sandwich the upper part of the pair of main members from the outside,
The upper surfaces of the pair of main members are located below the lower surface of the upper frame, and the upper surfaces of the pair of main members are separated from the lower surface of the upper frame, and the pair of plate members are disposed on the upper frame. It is connected to the,
The elevator counterweight device of claim 1.
The central vertical frame includes a pair of U-shaped main members, a pair of U-shaped sub members, and a widening member,
The pair of U-shaped main members are arranged such that the U-shaped opening faces outward,
The lower ends of the pair of U-shaped main members are fixed to the lower frame, the upper ends of the pair of U-shaped main members are connected to the widening member, and the pair of U-shaped sub members Each lower end is connected to a corresponding end portion of the widening member, and each upper end of the pair of U-shaped sub members is connected to the upper frame,
The upper surface of the pair of main members and the upper surface of the widening member are below the lower surface of the upper frame, and the upper surface of the pair of main members and the upper surface of the widening member are from the lower surface of the upper frame. is seperated,
The elevator counterweight device of claim 1.
A central cross beam,
The central transverse beam connects all the two vertical frames and one central vertical frame.
The elevator counterweight device according to any one of claims 1 to 3.
An upper frame, a lower frame, a pair of vertical frames, a T-shaped frame, and a weight are included. The T-shaped frame includes a horizontal portion and a vertical portion, and the horizontal portion is the pair of vertical frames. And a lower end of the vertical portion is connected to the lower frame, and an upper end of the vertical portion is connected to the horizontal portion, the repair method for the counterweight device before repair,
Removing the weight from the counterweight device before the repair;
Removing the T-frame;
Forming a mounting hole in the upper frame;
Fastening the upper end of the central vertical frame to the upper frame, and fastening the lower end of the central vertical frame to the lower frame;
A method of repairing an elevator counterweight device, comprising the step of reloading the weight.
The step of making a mounting hole in the upper frame is performed at the installation site of the elevator,
A method for repairing an elevator counterweight device according to claim 5.
The central vertical frame includes a pair of U-shaped main members and a pair of plate members,
The pair of U-shaped main members are arranged such that the U-shaped opening faces outward,
The pair of plate members are fixed to the upper part of the main member so as to sandwich the upper part of the pair of main members from the outside,
The upper surfaces of the pair of main members are located below the lower surface of the upper frame, and the upper surfaces of the pair of main members are separated from the lower surface of the upper frame, and the pair of plate members are disposed on the upper frame. It is connected to the,
The repair method of the counterweight apparatus of the elevator of Claim 5 or 6.
The central vertical frame includes a pair of U-shaped main members, a pair of U-shaped sub members, and a widening member,
The pair of U-shaped main members are arranged such that the U-shaped opening faces outward,
The lower ends of the pair of U-shaped main members are fixed to the lower frame, the upper ends of the pair of U-shaped main members are connected to the widening member, and the pair of U-shaped sub members Each lower end is connected to a corresponding end portion of the widening member, and each upper end of the pair of U-shaped sub members is connected to the upper frame,
The upper surface of the pair of main members and the upper surface of the widening member are below the lower surface of the upper frame, and the upper surface of the pair of main members and the upper surface of the widening member are from the lower surface of the upper frame. is seperated,
The repair method of the counterweight apparatus of the elevator of Claim 5 or 6.