JPS61248885A - Guide rail for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a guide rail for an elevator, and more particularly to an improvement in a guide rail for a counterweight of an elevator.

[Prior art]

FIG. 4 shows a schematic cross-sectional view of an elevator equipped with a conventional counterweight guide rail as shown in, for example, Utility Model Publication No. 58-48305, in which 1 is a hoistway, 2 is a car,
3 is a car door, 4 is a landing door, and 5 is a car guide rail attached to the left and right side walls of the hoistway 1 via support members 6.

Further, 7 is a counterweight, and a pair of parallel guide rails 8a sandwich the counterweight 7 from both sides;
8b are arranged in the vertical direction, and the counterweight 7 is engaged with the idle rails 8a, 8b via guide shoes 9a, 9b so as to be able to rise and fall, and the guide rail 8
a and 8b are supported on the side walls of the hoistway 1 by support members 6 and 10, respectively.

[Problem that the invention seeks to solve]

In the conventional counterweight guide system as described above, in the event of an earthquake, one of the guide rails 8a is bent outward as shown in FIG. 5, and the left and right guide rails 8a, 8
If the distance b is increased, the guide shoe will come off the idle rail when the counterweight 7 is raised or lowered.

As a means to prevent this, increasing the number of support points of the guide rail to the building and reducing the support interval, etc.
Alternatively, it is possible to make the guide rail larger, but this poses the problem of increased cost.

This invention solves the above-mentioned problems, prevents the elevating body from coming off the guide rail even if the guide rail is bent, reduces the rail installation space, and further simplifies the support mechanism for the elevator. The purpose is to provide.

[Means for solving problems]

This invention has a guide portion that engages and slides in such a way that the guide shoe of the elevating body embraces it from both sides, and has a T-shaped groove in cross section formed inside, and the guide shoe of the elevating body engages and slides into this groove. A 1R Z-ja heather is used to connect the joint ends of the guide rails by press-fitting a joint formed so that it abuts on the inside of all the contacting guide surfaces.

[Effect]

According to the configuration of the present invention, the elevating body is engaged and slid into contact with the guide portion of the guide rail in such a manner that the guide portions of the elevating body are hugged from both sides, making it difficult for the elevating body to come off from the guide rail.

Moreover, since the joints are press-fitted into the T-shaped cross-section grooves provided in the guide rail body to connect the guide rail joint ends, a seamless seam can be achieved.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In FIGS. 1 to 3, the same reference numerals as in FIGS. 4 and 5 indicate the same or corresponding parts, and the features of the present invention will be mainly explained. That is, 11 moves the counterweight 7 to the hoistway 1.
The idle rail main body is a single strip that guides it up and down inside, and as detailed in FIG. is formed. This guide part 11a and the base 1
1b is parallel to the hoistway side wall 1a. In addition, the guide rail body 9 for the counterweight is made of a joint material with a cross-sectional shape, and the guide rail body 1 is a horizontal piece 12a.

It has 12a. 13 is an anchor bolt provided on the shaft side wall 1a, 14 is a rail bracket, 15 is a rail clip, and 16 and 17 are fastening devices such as bolts and nuts, respectively.

The other configurations are shown in Figure 4. It is similar to FIG.

In the guide rail configured as described above, the guide portion 11a of the guide rail supported by the building has five sides with a T-shaped cross section, and the guide shoe 9 of the counterweight 7 wraps around the five sides. Since they are engaged, the swinging of the guided counterweight 7 back and forth and left and right is restricted.

Further, FIG. 3 shows a case where the guide rail main body 11 is joined according to the height of the hoistway. The joint material 12 is press-fitted into the T-shaped groove of the guide portion 11a at the joint end of the guide rail main body 11 to be joined together, and one horizontal piece 12a of the joint material 12 connects the base portion 11b of the guide rail main body 11 with a bolt or nut. The tightening is fixed by tightening 17 such as
Unify.

Furthermore, the base 11b of the guide rail main body 11 is attached to the rail bracket 14 fixed by the anchor bolt 13.
Rail clip 15 and fastening of bolts, nuts, etc. 1
It is fixed using 6.

In the above embodiment, the guide rail main body 11 is formed by bending a steel plate, but it may also be formed by extruding a metal material.

In the above-mentioned embodiment, a single guide rail supported by the building guides the lifting and lowering of the counterweight, and the guide portion is formed into a two-letter shape, and the guide rail is engaged so as to be hugged by the guide rail. Therefore, even if the guide rail body bends between its placket fulcrums during geological formation, the left and right guide parts will follow this, and the guide shoe will not come off the idle rail. The spacing between supporting points can also be increased, and the number of rail brackets can be reduced accordingly. Furthermore, since the guide rail main body is formed from a steel plate, the weight of the guide rail can be reduced, which simplifies the work of installing the guide rail, and reduces material costs and installation costs.

Furthermore, since only one guide rail is required, the space occupied by the guide rail in the hoistway is reduced compared to the conventional two-rail guide rail type, and the planar space for the counterweight can be increased accordingly. That is, the total height of the counterweight having a predetermined weight can be reduced, which contributes to reducing the total height of the hoistway.

Furthermore, the main bodies of the guide rails are connected to each other, and a joint material with a T-shaped cross section is brought into contact with the entire inner surface of the guide part at the joint, so a rail surface with no level difference is obtained and the shock of passing through the joint is reduced. It can be prevented.

Although the embodiments of the present invention have been described with reference to an idle rail as a counterweight, the present invention is not limited to this.

〔Effect of the invention〕

As explained above, according to the present invention, the guide rail member is formed with a guide portion that the guide shoe of the elevating body engages with from both sides, and the guide portion that comes into contact with all the guide surfaces.
Since the connection is made by press-fitting the guide rail, even if the guide rail body bends between its bracket fulcrums during an earthquake, etc., the elevating body's guide rail will not easily come off from the guide rail, and the guide rail support mechanism will also be It can be simplified,
Workability and installation efficiency can be improved. In addition, since only one guide rail is required, the installation space for the guide rail can be reduced, and since the guide rails are connected using a joint material that contacts all guide surfaces, it is possible to eliminate joint steps and prevent vibrations caused by step shock. .

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of an elevator equipped with an elevator guide rail according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the main part of this invention, FIG. 5 is a schematic sectional view of an elevator equipped with a conventional elevator guide rail, and FIG. 5 is an explanatory diagram of a conventional elevator guide rail. 1... Hoistway, 2... Car, 7... Counterweight,
9... Guide shoe, 11... Guide rail body, 1
2-... Indian lumber. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa (and 2 others) Figure 1 1: +1! IpI Figure 2 Figure 6 Figure 4 Figure 5 Procedural Amendment (Voluntary)

Claims (2)

[Claims] (1) It has a guide part on the outer circumferential surface that engages and slides into contact with the guide shoe of the elevating body from both sides, and has a cross section T inside.
A letter-shaped groove is formed, and a joint formed to abut inside all the guide surfaces with which the guide shoe engages and slides is press-fitted into the groove to connect the joint ends of the guide rails. An elevator guide rail characterized by: (2) The guide rail for an elevator according to claim 1, wherein the guide rail is formed by bending a steel plate.