JP6797104B2 - Elevator guide rail bracket - Google Patents

Description

The present invention relates to a bracket attached to a guide rail erected in an elevator hoistway.

The guide rails erected in the hoistway of the elevator are mainly provided for the purpose of elevating guides for the car and the balance weight, but brackets used for various purposes can also be attached. The bracket is used for fixing the guide rail itself to the hoistway wall surface at predetermined intervals, for holding the governor rope in place, and for holding an inductor plate (shielding plate) and a protection line.

Here, in many methods of fixing the bracket to the guide rail, the flange portion of the guide rail is sandwiched between the bracket and the clip, and then the clip is fastened to the bracket with bolts and nuts to fix the bracket. When this fixing method is used, generally, two clips are used for one bracket, but in Patent Document 1, one of the flange portions is gripped by an elastic folded piece, and only the other is fixed with a clip. Brackets to be used are disclosed.

Japanese Unexamined Patent Publication No. 6-156925

In the configuration of Patent Document 1, the number of clips, bolts, and nuts used can be reduced as compared with the method of using two clips for each bracket, but the use of clips and the like is still indispensable. It is hard to say that the simplification of the fixing work and the cost reduction have been sufficiently achieved.

Further, when working at a high place, since the impact when the parts are dropped is large, it is necessary to handle even small and lightweight parts such as clips carefully so as not to drop them. However, in the configuration of Patent Document 1, When fixing the bracket, it is necessary to handle the clip, bolt, and nut at the same time, so considerable care is required not to drop each.

Furthermore, with the increase in the height of buildings in recent years, as the elevator's lifting distance increases, the guide rail also becomes longer, and the number of brackets required to fix the guide rail to the wall surface and to prevent the governor rope from swaying tends to increase. .. In the configuration of Patent Document 1, since the number of brackets, clips, etc. used increases in proportion to the length of the guide rail, there is also a problem that office work such as material management becomes complicated as the building becomes taller. ..

Therefore, an object of the present invention is to provide a bracket for an elevator guide rail, which is easy to fix work, can suppress the fixing cost, and can also suppress complicated material management and the like.

In order to solve the above problems, the guide rail bracket of the present invention is attached to the guide rail of an elevator, and has a base side provided with a notch for fitting with the flange portion of the guide rail, and the base portion. It has a tip side that is bent by an angle θ with respect to the side, the inlet side dimension of the notch portion is equal to or larger than the width W of the flange portion, and is in contact with the bottom surface of the flange portion of the notch portion. It was assumed that the length of the side was equal to or greater than the width W / cos θ.

According to the present invention, it is possible to provide an elevator guide rail bracket that facilitates fixing work, can suppress fixing costs, and can also suppress complicated material management and the like.

Schematic diagram of the main part of the elevator device. Top view of the conventional guide rail bracket. Front view of the conventional guide rail bracket. The front view of the bracket for the guide rail of Example 1. Top view of the bracket for the guide rail of the first embodiment. The construction drawing which attached the bracket for the guide rail of Example 1 to a guide rail. FIG. 5 is a detailed view of the guide rail bracket and the guide rail of the first embodiment before fixing. FIG. 5 is a detailed view of the guide rail bracket and the guide rail of the first embodiment after fixing. Top view of the bracket for the guide rail of the second embodiment. FIG. 5 is a detailed view of the guide rail bracket and the guide rail of the second embodiment before fixing. FIG. 5 is a detailed view of the guide rail bracket of the second embodiment after fixing the guide rail.

Hereinafter, examples of the present invention will be described with reference to the drawings.

The guide rail bracket according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 5B.

First, prior to the description of this embodiment, an outline of a general elevator device and a conventional bracket for a guide rail will be described.

FIG. 1 is a schematic view of a main part of a general elevator device. As shown here, the elevator devices are distributed in the hoistway and the machine room, and the car 7 and the balance weight 8 that go up and down in the hoistway, the guide rail 1 that guides the up and down of both, and the rider. It includes a main rope 3 in which a car 7 and a counterweight 8 are connected to each end, a hoisting machine 2 around which an intermediate portion of the main rope 3 is wound, and a pulley 2a. In addition, the tail code 6 that transmits electric power and signals from the fixed side of the building to the car 7 and the shock absorber 9 that buffers the impact when the car 7 does not stop at the bottom floor but descends to the bottom of the hoistway for some reason. Is also installed.

Further, as a safety device, a loop-shaped governor rope 4 is wound around a speed governor 5 in the machine room and a pulley 5a on the bottom side of the hoistway, and by connecting the governor rope 4 and the car 7 to the car 7 The ascending / descending speed can be suppressed to be equal to or lower than a predetermined threshold value regulated by the governor 5. The bracket 20 surrounds the entire circumference of the governor rope 4 so that the governor rope 4 does not swing during an earthquake or a strong wind and interferes with the elevator tower internal equipment, thereby suppressing the swing of the governor rope 4.

Next, the detailed structure of the conventional bracket 20 will be described with reference to FIGS. 2A and 2B.

FIG. 2A is a front view of the bracket 20 fixed to the guide rail 1, and FIG. 2B is a top view thereof. As shown in these, the guide rail 1 has a substantially T-shaped cross-sectional shape in which a rail portion 1a for guiding the car 7 and the like and a flange portion 1b having a width W are combined. Further, the bracket 20 has a shape in which the mounting arm 21 provided with the steady rest 25 and the base portion 22 thereof are arranged at the same height. Then, both ends of the flange portion 1b are sandwiched between the base portion 22 of the bracket 20 and the clip 23, and each clip 23 is fastened with the bolt 24a and the nut 24b to fix the bracket 20 to the guide rail 1. As described above, since the clip 23, the bolt 24a, and the nut 24b are indispensable for fixing the conventional bracket 20, various problems described in "Problems to be Solved by the Invention" occur.

Hereinafter, the detailed structure of the bracket 30 of the present embodiment that solves this problem will be described with reference to FIGS. 3A to 5B.

FIG. 3A is a front view of the bracket 30, and FIG. 3B is a top view thereof. As shown in FIG. 3A, the bracket 30 is composed of a tip side flat plate 31 and a base side flat plate 32, and the front end side flat plate 31 is refracted by an angle θ with respect to the base side flat plate 32. This angle θ can be arbitrarily designed, but it is desirable to set it in the range of about 30 to 60 ° in consideration of the efficiency of the mounting work described later.

Further, as shown in FIG. 3B, the base side flat plate 32 is provided with notches 33 having both ends having a shape corresponding to the flange portion 1b having a width W. The dimension of the notch 33 on the inlet side is W + α, which is the width W of the flange portion 1b plus the tolerance α. For example, when a guide rail 1 having a width of 100 mm is used, its tolerance α is 1 to 2 mm, so the dimension on the inlet side may be 101 to 102 mm. Further, the dimension of the inner side of the notch 33, which is in contact with the bottom surface of the flange 1b, is W / cos θ or more. Further, the thickness dimension T on the side of the flange portion in contact with the bottom surface is less than the thickness of the flange portion 1b.

Next, the work of attaching the bracket 30 to the guide rail 1 will be described with reference to FIG. The bracket 30 shown in FIG. 4 is an example in which the steady rest device 34 is attached to the tip side flat plate 31, but another configuration may be attached to the tip side flat plate 31.

First, hold the bracket 30 so that the base side flat plate 32 is perpendicular (horizontal) to the longitudinal direction of the guide rail 1 at the height at which the bracket 30 is to be attached, and cut the flange portion 1b of the guide rail 1 and the bracket 30. The notch 33 is opposed to each other. Then, after the bracket 30 is horizontally moved to a position where the flange portion 1b fits in the notch portion 33, the bracket 30 is tilted by an angle θ counterclockwise so that the tip side flat plate 31 is horizontal.

As a result, the horizontal dimension on the back side of the notch portion 33 becomes equal to the width W of the flange portion 1b, and at the same time, the horizontal dimension of the inlet of the notch portion 33 becomes (W + α) cosθ less than the width T of the flange portion 1b. , The flange portion 1b meshes with the notch 33 of the bracket 30, and the bracket 30 can be fixed to the guide rail 1.

The details of the action of fixing the bracket 30 by the method of FIG. 4 will be described with reference to FIGS. 5A and 5B. FIG. 5A is an enlarged view of the portion A of FIG. 4 as viewed from above, and shows a state in which the base side flat plate 32 is substantially horizontal before the bracket 30 is fixed. Further, FIG. 5B shows a state in which the tip side flat plate 31 side is substantially horizontal after the bracket 30 is fixed. As shown in these drawings, a tapered portion 1c whose thickness gradually decreases is provided at the end of the flange portion 1b, and the end of the notch 33 also has a taper having a shape corresponding to the tapered portion 1c. A portion 33a is provided.

When the bracket 30 is tilted counterclockwise as shown by the arrow in FIG. 4, the base side flat plate 32 side is brought closer to the substantially horizontal state (FIG. 5A), and the tip side flat plate 31 side is brought closer to the substantially horizontal state (FIG. 5B). When the gap between the tapered portion 1c of the flange portion 1b and the tapered portion 33a of the notch portion 33 is gradually reduced and the tapered portion 1c enters the tapered portion 33a, the thickness dimension T of the notch portion 33 becomes the flange portion 1b. Since it is less than the thickness of, the tapered portion 33a is expanded by the flange portion 1b, and an elastic force is generated as a reaction force thereof. Then, the bracket 30 is fixed to the guide rail 1 by this elastic force and the frictional force at the contact surface between the tapered portion 33a of the notch portion 33 and the flange portion 1b.

As described above, according to this embodiment, the bracket can be fixed to the guide rail without using clips, bolts, or nuts, so that the bracket can be easily fixed and the clip or the like can be dropped during the bracket fixing work. Since there is no such thing, safety can be improved. Further, since the clip or the like is not used, the cost of fixing the bracket can be suppressed, and the management of the clip or the like becomes unnecessary, so that the complicated office work such as material management can be suppressed.

In this embodiment, a bracket attached to a guide rail erected in the hoistway of an elevator is used to suppress the runout of the governor rope, but the use of the bracket is not limited to this, and other long lengths are used. It may be used as a steady rest device for suppressing the runout of an object, or may be used for attaching a hoistway device such as an inductor plate (shielding plate) or a protection line.

Next, the guide rail bracket of the second embodiment of the present invention will be described with reference to FIGS. 6 to 7B. It should be noted that duplicate description will be omitted for the common points with the first embodiment.

FIG. 6 is a top view of the guide rail bracket of the second embodiment. As shown here, in this embodiment, a U-shaped recess 33b is provided at the tip of the tapered portion 33a of the bracket 30.

Next, the elastic force generation mechanism in the bracket 30 of this embodiment will be described with reference to FIGS. 7A and 7B. FIG. 7A is a detailed view of the notch 33 of the bracket 30 and the tapered portion 1c of the guide rail 1 before being fixed, and FIG. 7B is a detailed view after the fixing.

As shown in these drawings, when the tapered portion 33a enters the guide rail 1, the tapered portion 1c of the guide rail 1 pushes the tapered portion 33a of the notch portion 33 open, but the tip of the tapered portion 33a has a recess. Since 33b is provided, the tapered portion 33a is deformed with a lighter force than in the first embodiment. By changing the shape of the recess 33b, the elastic force required for fixing the bracket 30 can be easily adjusted. That is, according to the bracket 30 of the present embodiment, the bracket 30 can be attached to the guide rail 1 with a lighter force than that of the first embodiment.

Further, according to the bracket 30 of the present embodiment, since the tapered portion 33a of the notch portion 33 is easily bent, the tapered portion 33a is easily brought into contact with the entire surface of the tapered portion 1c, which occurs on the contact surface between the guide rail 1 and the tapered portion 33a. Since the frictional force is also improved, the bracket 30 can be fixed more stably.

1 guide rail,
1a rail part,
1b Flange part,
1c taper part,
2 hoisting machine,
2a pulley,
3 main rope,
4 governor rope,
5 governor,
5a pulley,
6 Tail code,
7th basket,
8 Balanced weight,
9 shock absorber,
20, 30 brackets,
21 Mounting arm,
22 base,
23 clips,
24a bolt,
24b nut,
25 steady rest,
31 Tip side flat plate,
32 Base side flat plate,
33 Notch,
33a taper part,
33b recess,
34 Steering device

Claims (6)

A guide rail bracket that can be attached to an elevator guide rail.
The base side provided with the notch portion to be fitted with the flange portion of the guide rail, and
It has a tip side that is refracted by an angle θ with respect to the base side.
The feature is that the inlet side dimension of the notch portion is equal to or larger than the width W of the flange portion, and the length of the side of the notch portion in contact with the bottom surface of the flange portion is equal to or greater than the width W / cos θ. Bracket for guide rails. The guide rail bracket according to claim 1, wherein the thickness dimension of the notch portion on the side in contact with the bottom surface of the flange portion is less than the thickness of the flange portion. When the base portion side is tilted by an angle θ while the flange portion is located in the notch portion, the horizontal distance of the inlet side dimension of the notch portion is less than the width W of the flange portion. The guide rail bracket according to claim 1 or 2. The guide rail bracket according to claim 1 or 2, wherein the dimension of the notch portion on the inlet side is the sum of the width W of the flange portion and the tolerance α thereof. The guide rail bracket according to claim 1 or 2, wherein the cutout portion is provided with a recess on a surface in contact with the side surface of the flange portion. On the tip side
Steering part that regulates the runout of long objects for elevators,
Shielding plate holding part that holds the shielding plate, or
Protective line holder that holds the protective line,
The guide rail bracket according to claim 1 or 2, wherein the guide rail bracket is provided.

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