JPH11165967A - Derailment preventing device of elevator counterweight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a counterweight's derailment preventing device that is able to prevent interference with a fastener or the like for locking a guide rail, and also to reduce the cost of production, and besides, it is applicable even in the case where individual sizes of the guide rail are varied. SOLUTION: This derailment preventing device consists of a pair of supporting members 11 being formed into a nearly C-shaped form, and their one end is attached to a frame body 3, and another pair of engaging members 12 being supported by the paired supporting members 11, and coming into slidingly contact with the backside of a pair of guide rails 1, in this constitution, this supporting member 11 is equipped with a nearly L-shaped fixed body 14 whose one side 14a is locked to the frame body 3, and a nearly L-shaped movable body 15 shiftably installed in this fixed body 14, respectively. In the case where a fastener securing the guide rail 1 is situated in the vicinity of a counterweight, the paired supporting members 11 are set up at the opposite side of this fastener with the counterweight as the border, and the movable body 15 is displaced in a direction orthogonal to the back face of the guide rail 1 according to each size of the rail 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing an elevator counterweight from derailing, which is used when an elevator is installed.

[0002]

2. Description of the Related Art In recent years, in order to reduce the time required for elevator installation work, to improve safety, and to reduce labor, a conventional elevator car frame is used without assembling a scaffold in a hoistway as in the prior art. Elevator installation methods for mounting and centering guide rails and doorway components using a hoist and the like have come to be adopted.

FIG. 6 is a plan view showing a conventional example of a device for preventing a counterweight from derailing used in this type of elevator installation method.

A counterweight shown in FIG. 6 is a pair of guide devices 2 which respectively engage with a pair of left and right guide rails 1.
And a frame 3 provided with the pair of guide devices 2 on both sides;
And a weight 4 provided inside the frame 3.

[0005] The derailing prevention devices provided on the counterweight are each extended in the horizontal direction.
A pair of elongated members 5 supported by the frame 3 and protruding laterally from the frame 3, shafts 6 provided at both ends of the pair of elongated members 5, and rotatably supported by the shafts 6. And a pair of rollers 7 rolling on the back surface of the guide rail 1.
It consists of In such a conventional rail derailing prevention device, when a pair of left and right guide rails 1 is suspended vertically in a hoistway (not shown) at the time of installation of an elevator or the like, the pair of left and right guide rails 1 By keeping the distance between the guide rails 1 constant by bringing the rollers 7 into contact with each other, it is possible to prevent the pair of guide devices 2 provided on both sides of the frame body 3 from separating from the guide rails 1, that is, prevent the rails from coming off. .

[0006] As related to this kind of prior art, there is, for example, the one described in JP-A-8-217361.

[0007]

By the way, in the above-mentioned conventional device for preventing the elevator counterweight from derailing, the elongated body 5 and the shaft 6 protrude from the frame 3 to the side (the building side). It is feared that the elongate member 5 or the shaft 6 may protrude from the steel-structured building and collide with the so-called fastener for fixing the guide rail 1 to the building side when the ascending and descending is performed.

Further, since the rollers 7 rolling on the rear surface of the guide rail 1 cannot be displaced in a direction orthogonal to the rear surface of the guide rail 1, the elevators having different dimensions from the rear surface of the guide rail 1 to the front end surface are different. In some cases, there is a problem that the rail removal preventing device cannot be applied.

Further, since relatively large parts such as the elongated body 5 extending in the horizontal direction are required, there is a problem that the cost is high.

Particularly, in an elevator having a counterweight on the side of the car, a reference line for centering is stretched near the guide rail 1 for the counterweight.
There is a concern that the centering reference line may collide with the elongated body 5 or the shaft 6.

The present invention has been made in view of such a situation in the prior art, and a first object of the present invention is to prevent interference with a fastener for fixing a guide rail to a building or a centering reference line. In addition, an object of the present invention is to provide a device for preventing an elevator counterweight from derailing, which can reduce the cost.

A second object of the present invention is to provide a device for preventing an elevator counterweight from derailing, which can be applied to various elevators having different guide rail sizes.

[0013]

In order to achieve the first object, the invention according to claim 1 of the present invention engages with a pair of left and right guide rails suspended vertically in a hoistway. A device for preventing a rail from derailing an elevator counterweight having a pair of guide devices on both sides and having a frame that moves up and down along the guide rails and a weight provided inside the frame, is formed in a substantially C shape. , A pair of support members each having one end attached to the frame, and a pair of engagement members each supported by the pair of support members and slidingly contacting the back surface of the pair of guide rails.

According to the first aspect of the present invention having the above-described structure, when the fastener for fixing the guide rail to the building side or the centering reference line is located near the counterweight, the counterweight is separated from the counterweight. On the opposite side of the fastener or centering reference line, a pair of substantially C-shaped support members is disposed, and one end of each of the pair of support members is attached to a frame body, and Support a pair of engaging members that are in sliding contact with the back surfaces of the pair of guide rails. Accordingly, it is possible to prevent the support member and the engagement member from interfering with the fastener and the centering reference line, and it is not necessary to use a relatively large component such as a long body as in the related art. Cost can be reduced.

According to a second aspect of the present invention, in order to achieve the second object, in the first aspect, at least one of the support members is fixed to one side of the frame. A substantially L-shaped fixed body, a substantially L-shaped movable body movably mounted on the other side of the fixed body, and a fastener for fastening the fixed body and the movable body. The movable body can be displaced in a direction orthogonal to the back surfaces of the pair of guide rails.

In the invention according to the second aspect of the present invention, the substantially L-shaped movable member mounted on the other side of the fixed member of the support member is changed according to the size of the guide rail. The distance between the sliding surface of the engaging member supported by the support member and the rear surface of the guide rail is set to a predetermined dimension by displacing the support member in the direction orthogonal to the rear surface of the guide rail. Thereby, it can be applied to various elevators having different guide rail sizes.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a device for preventing an elevator counterweight from derailing according to the present invention. FIG. 1 is a plan view of an elevator provided with a device for preventing a rail from derailing according to an embodiment of the present invention, FIG. 2 is an enlarged plan view of the device for preventing a rail from derailing according to the present embodiment, and FIG. Perspective view illustrating a structure such as a support member provided in the rail removal prevention device of the embodiment,
FIG. 4 is a front view of the elevator of FIG. In addition, FIG.
In FIG. 4, the same components as those shown in FIG. 6 described above are denoted by the same reference numerals.

In the elevator shown in FIG. 4, a guide rail 1 suspended vertically in a hoistway is connected via a joint 8, and a pair of guide devices 2 is provided at the lower end of the frame 3 of the counterweight. Installed on both sides.

As shown in FIG. 1, the rail removal prevention device of the present embodiment is formed in a substantially C shape, and has a pair of support members 11 each having one end attached to the upper end of the frame 3.
And are supported by the pair of support members 11, respectively.
An upper guide shoe 13 that engages with the guide rails 1 is mounted on the pair of support members 11 and a pair of engagement members 12 that slide on the back surfaces of the pair of guide rails 1.

As shown in FIG. 2, one support member 11 has a substantially L-shaped fixed body 14 having one side 14a fixed to the frame 3, and a side 15a moved to the other side 14b of the fixed body 14. A movable member 15 having a substantially L-shape, which is attached to the movable member 15, and a fastener 16 for fastening the fixed member 14 and the movable member 15 to each other. The engaging member 12 is attached to the other side 15b of the movable member 15. ing. The other support member 11 is formed symmetrically with the one support member 11. Further, on one side 15a of the movable body 15, as shown in FIG.
A pair of long holes 17 are formed along a direction orthogonal to the back surfaces of the pair of guide rails 1, and fasteners 16 are inserted into the pair of long holes 17, respectively.

In this embodiment, the guide rail 1
When the fastener 9 for fixing the member to the building side is located near the counterweight, a pair of support members 11 formed in a substantially C-shape are arranged on the opposite side of the fastener 9 with the counterweight as a boundary. One end of each of the pair of support members 11 is attached to the frame 3, and the pair of support members 11 supports a pair of engagement members 12 that slide on the back surfaces of the pair of guide rails 1.

When the size of the guide rail 1 is different, the fastener 16 of the support member 11 is loosened, and the other side 14b of the fixed body 14 is set in accordance with the dimension from the back surface to the end surface of the guide rail 1. After moving the substantially L-shaped movable body 15 along the elongated hole 17, the fastener 16 is tightened to fix the movable body 15 to the fixed body 14. Thereby, the guide rail 1 with respect to the upper guide shoe 13 is mounted in a state where the rail removal device is mounted on the counterweight.
Engaging allowance is determined by the rear surface of the guide rail 1 and the engaging member 12.
Since it is equal to or greater than the gap with the sliding surface of the guide rail, it is possible to prevent the counterweight from falling off from the guide rail 1 during elevating. In addition, although the upper guide shoe 13 is used as a member to be engaged with the guide rail 1, a guide roller is similarly used.
It is possible to prevent the derailing of the counterweight.

In the embodiment configured as described above, the support member 11 and the engagement member 12 can be prevented from interfering with the fastener 9, and a relatively large component such as a long body is not required unlike the related art. As a result, costs can be reduced.

In this embodiment, the movable member 15 of the support member 11 is displaced in a direction perpendicular to the back surface of the guide rail 1 so that the sliding surface of the engagement member 12 supported by the support member 11 and the guide rail 1 By setting the distance from the back of the vehicle to a predetermined dimension, the present invention can be applied to various elevators having different sizes of the guide rails 1.

In this embodiment, the case where the counterweight is located behind the car 18 as shown in FIG. 1 is exemplified. However, the present invention is not limited to this, and the counterweight is used as shown in FIG. When positioned on the side of the car 18, the centering reference line 19 is stretched near the counterweight guide rail 1, so that the centering reference line 19 is substantially opposite to the counterweight reference line 19 at the counterweight. By disposing the pair of support members 11 formed in a C shape, it is possible to prevent the support member 11 and the engagement member 12 from interfering with the centering reference line 19.

[0026]

As described above, according to the first aspect of the present invention, it is possible to prevent the support member and the engaging member from interfering with the fastener and the centering reference line, and to reduce the interference. The cost can be reduced because relatively large parts such as long bodies are not required, so that it can be applied to many elevators regardless of the structure of the building and the model of the elevator, and is versatile and inexpensive. There is an effect that a rail derailing prevention device for an elevator counterweight can be obtained.

The invention according to claim 2 of the present invention can be applied to various types of elevators having different dimensions from the back surface to the end surface of the guide rail. There is an effect that a device for preventing the weight from derailing can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view of an elevator provided with a device for preventing an elevator counterweight from derailing according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view showing the rail-removing prevention device of the present embodiment.

FIG. 3 is a perspective view illustrating a structure of a support member and the like provided in the rail removal prevention device of the present embodiment.

FIG. 4 is a front view of the elevator of FIG. 1;

FIG. 5 is a plan view of an elevator having a counterweight on the side of the car.

FIG. 6 is a plan view showing a conventional example of an apparatus for preventing a derailment of an elevator counterweight.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Guide device 3 Frame 4 Weight body 9 Fastener 11 Support member 12 Engaging member 13 Upper guide shoe 14 Fixed body 14a One side 14b Other side 15 Movable body 15a One side 15b Other side 16 Fastener 17 Elongated hole 18 Car basket 19 Reference line for centering

Continued on the front page (72) Inventor Keno Suzuki 4-16-29 Nakagawa, Adachi-ku, Tokyo Within Hitachi Elevator Techno Service Co., Ltd. (72) Inventor Shinobu Suzuki 4-16-29 Nakagawa, Adachi-ku, Tokyo Hitachi, Ltd. Within Beta Techno Service Co., Ltd.

Claims (2)

[Claims] 1. A frame which is provided on both sides thereof with a pair of guide devices respectively engaged with a pair of left and right guide rails suspended in a vertical direction in a hoistway, and a frame which moves up and down along the guide rails. In a device for preventing a derailment of an elevator counterweight having a weight provided therein, a pair of support members formed in a substantially C shape, one end of which is respectively attached to the frame, and each of which is supported by the pair of support members And a pair of engaging members that slide on the back surfaces of the pair of guide rails. 2. A substantially L-shaped fixed body, one side of which is fixed to the frame, and a substantially L-shaped movable body movably mounted on the other side of the fixed member. Body and
2. A structure comprising a fastener for fastening the fixed body and the movable body, wherein the movable body is displaceable in a direction orthogonal to the back surfaces of the pair of guide rails.
The derailment prevention device for the elevator counterweight described in the above.