JPH07232875A - Bent part correcting method for guide rail for elevator - Google Patents

Abstract

PURPOSE:To enable bending of a guide rail formed by linking a plurality of guide rails with one another to be easily and reliably corrected. CONSTITUTION:When bending of linked parts 1A to 1C of a guide rail 1 is corrected, a tension providing means 6 such as a chain block is interposed between a machine room floor 3 and the guide rail 1 prior to correction work, so as to provide upward force to the guide rail 1. Accordingly, bending is not accumulated to the linked parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for correcting a bent portion of an elevator guide rail.

[0002]

2. Description of the Related Art Conventionally, as a method of this kind, a full-scale method was used.
As described in JP-A-132278, two guide rails are connected to each other in a state where a guide piece is closely attached to a side wall surface of the joint portion of the guide rail to prevent bending at the joint portion of the guide rail. What has been proposed is proposed.

[0003]

However, in the above-mentioned conventional method, since the guide piece is simply pressed against the side wall surface of the guide rail joint portion, the portion corrected using the guide piece becomes a straight line. Even if it does, since both ends (adjacent joints) on the other side of the guide rail move up and down due to the correction of the bend, the joints on both sides of the corrected joint will bend accordingly. Unless the correction is repeated many times, the desired result cannot be obtained, and it is considerably difficult to correct the bending.

An object of the present invention is to make it possible to easily and reliably correct the bending of a guide rail having a plurality of joints.

[0005]

The above object is to provide a predetermined length corresponding to the height of the hoistway by connecting a plurality of guide rails of arbitrary length, and the guide rails are supported on the hoistway wall via brackets and fasteners. In the method for correcting the bent portion of the guide rail for elevators, when correcting the bent portion of the guide rail, an upward force is applied to the guide rail between the guide rail and the machine room floor above the hoistway. This is accomplished by applying an upward force to the guide rail through a pulling-up means for adjusting the bent portion and then performing a work for correcting the bent portion.

Further, the above object is to provide a predetermined length corresponding to the height of the hoistway by adding a plurality of guide rails of arbitrary length, and the elevator is supported on the hoistway wall via brackets and fasteners. In the method for correcting the bent portion of the guide rail for a vehicle, when correcting the bent portion of the guide rail, the chain block is suspended in a hole portion that is preformed in the machine room floor above the hoistway, and the guide rail is used by this chain block. It is achieved by performing a work of correcting the bending generated in the additional portion of the guide rail while applying an upward pulling force to the.

[0007]

[Function] In short, since the guide rail is pulled upward when the bent portion of the guide rail is corrected, the guide rail above the replenishing portion being corrected is always in a state of being able to move upward. When the upper end of the guide rail moves upward due to the correction of the bend, the guide rail on the upper side immediately moves, and the bend is not corrected and is not accumulated in the addition part of the upper part of the addition part. , Desired accuracy can be obtained without repeating correction many times. Therefore, the bent portion can be easily and surely corrected.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a diagram showing a pre-stage of correcting the bending of the extension portion of the guide rail 1 installed in the hoistway, and the bending of the guide rail 1 is exaggerated.

The guide rail 1 is fixedly supported on the hoistway wall by a bracket (not shown) and a fastener 2. The guide rail 1 is formed by adding a plurality of guide rails of a predetermined length according to the height of the hoistway.
In the figure, reference numeral 3 is a floor of the machine room provided in the upper part of the hoistway, and reference numeral 4 is a hole formed in the machine room floor 3. It was formed during installation and usually covers the lid. Reference numeral 5 is an angle, and reference numeral 6 is a chain block.

Next, when the guide rail is bent, how to correct it will be described. The angle 5 is passed through the hole 4 of the machine room floor 3, the chain block 6 is hung on this, and the hook 6A of the chain block 6 is locked to the guide rail 1 directly or via a wire. Next, loosen the bolt 2A of the fastener 2 that fixes and supports the guide rail 1 a little,
At the same time, the chain block 6 pulls the guide rail 1 upward to apply an upward force to the guide rail 1. Next, the bending of the additional portions 1A, 1B ... 1N of the guide rail 1 is corrected by any means and method. As an example of a correction method, as shown in Japanese Utility Model Laid-Open No. 56-132278, a method of applying two guide pieces to both side surfaces of the joint portions 1A to 1N of the guide rail and tightening the guide pieces from both sides. Alternatively, there is a method of hitting the guide rail 1 with a plumb bob while matching it with the bob. In addition, the correction work is sequentially performed from the lower joint portion upward, and the bolt of the clip 2 is tightened each time the correction is completed.

When the bending of the optional additional portion 1C is corrected, the end 4 of the upper guide rail 41 of the additional portion 1C is corrected.
1e moves to the left and at the same time is positioned above. That is, if the end portion 41e moves upward and the guide rail 31 that is added to the upper portion does not move upward, the guide rails 31 and 41 receive a compressive force (buckling) and are deformed (curved) in the middle, Then, the bending is accumulated in the joint portion 1B.

However, in the present invention, the guide rail 1 (2
1 to 51) are always subjected to a force so as to be pulled upward, the guide rails 31 and 21 on the upper side thereof move upward at the time when the bending is corrected by the addition portion 1C,
Accumulation of bending is eliminated, and bending correction at each joint 1A to 1N can be accurately performed. Further, when the bending is corrected, the external force applied to each of the guide rails 21, 31, 41 ... Can be small.

In the above embodiment, the chain block has been described as the means for applying the upward force to the guide rail 1, but the present invention is not limited to this, and the following may be used.

(1) Place a flat plate with holes on the holes 4,
A bolt in which a nut is screwed is inserted into the hole of this flat plate, the lower end of the bolt and the guide rail 1 are connected by a wire, and the nut is tightened up to give an upward force to the guide rail 1.

(2) A hydraulic ram is placed on the machine room floor 3, the movable side of the hydraulic ram and the guide rail 1 are connected by a wire (through a hole 4), and pressure oil is sent to the hydraulic ram to guide it. Those that give upward power.

As described in detail above, according to the embodiment of the present invention, (1) the external force is small when the bent portion is corrected.

(2) It is not necessary to repeat the correction in order to obtain the desired correction accuracy.

(3) The work of correcting the bending can be accurately performed in a short time.

(4) It can be applied regardless of the method of correcting the bent portion.

(5) Even a person who is not an expert can correct the bending.

There are effects such as the following.

[0022]

As described above, according to the present invention, when the bent portion of the guide rail is corrected, the guide rail is pulled upward. , It is always in a state of being able to move upward, and when the upper end of the guide rail is subjected to the force to move upward due to the correction of the bent portion, the upper guide rail immediately moves and the bending is corrected. A desired accuracy can be obtained without repeating the correction many times, because it is not accumulated in the upper addition portion of the existing addition portion. Therefore, the bent portion can be easily and surely corrected.

[Brief description of drawings]

FIG. 1 is an explanatory diagram for explaining an embodiment of the present invention.

[Explanation of symbols]

 1 Guide rail 1A Extension part 2 Fastener 3 Machine room floor 4 Hole formed in the machine room floor 5 Angle 6 Chain block

Claims (2)

[Claims] 1. A bend of an elevator guide rail supported by a hoistway wall via brackets and fasteners, etc., by adding a plurality of guide rails of arbitrary length to a predetermined length corresponding to the hoistway height. In the section correcting method, when the bent portion of the guide rail is corrected, a raising means for applying an upward force to the guide rail is interposed between the machine room floor above the hoistway and the guide rail, A method for correcting a bent portion of a guide rail for an elevator, which comprises performing a work for correcting a bent portion after applying an upward force to the guide rail. 2. A bend of an elevator guide rail supported by a bracket, fastener, etc. on a hoistway wall by adding a plurality of guide rails of arbitrary length to a predetermined length corresponding to the hoistway height. When correcting the bent part of the guide rail in the section correction method, suspend the chain block in the hole part that is preformed in the machine room floor above the hoistway, and use this chain block to lift the guide rail upward. The method for correcting the bent portion of the elevator guide rail is characterized by performing the work of correcting the bending generated in the additional portion of the guide rail while applying the above.