JP2846528B2 - Guide rail installation method for hydraulic elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for installing a guide rail of a hydraulic elevator while moving a car of the hydraulic elevator up and down.

[0002]

2. Description of the Related Art As a conventional method of installing guide rails in a hydraulic elevator, a work platform is not assembled in a hoistway, but an elevator car that moves up and down is used as a work platform, and the guide rails are sequentially centered using this. The structure in which the fixing is performed is described in JP-A-64-38386.

[0003]

However, in the hydraulic elevator, when one end of the main rope engaged with the hydraulic jack is connected to the car, the end of the main rope is not located at the center of the car but near the car near the hydraulic jack. Is connected to the end of the car, so that the car always has a rotational moment, and the rotational moment is received by the guide rail via the upper guide roller and the lower guide roller disposed above and below the car. doing. For this reason, when the guide roller is centered and fixed from the lower position of the hoistway, the upper guide roller is not centered and fixed even if the lower guide roller engages with the centered and fixed area of the guide rail. Since it is engaged with the area, not only the guide rail of this part is displaced by the rotational moment of the car, but also the centering work is performed while receiving the rotational moment, It has become extremely difficult and it has also become difficult to obtain a desired centering accuracy.

An object of the present invention is to provide a method for installing a guide rail of a hydraulic elevator that can easily obtain a desired centering accuracy.

[0005]

According to the present invention, a work floor is mounted on a car floor provided with a catch device, and the work floor is raised by a hydraulic jack via a main rope. In the guide rail installation method for a hydraulic elevator, in which the temporarily added guide rail in the temporary state is fixed and fixed to the support member, after the work floor is raised by the hydraulic jack, the catch device is operated. That the car floor and the work floor are supported on the already centered and fixed portions of the guide rails, the main ropes are loosened, and then the guide rails near the work floor are centered and fixed. Features.

[0006]

According to the method for installing a guide rail of a hydraulic elevator according to the present invention, when the guide rail is centered and fixed as described above, a car is supported by using a catch device generally provided in the area where the guide rail is centered and fixed. , To stop being lifted by the main rope,
There is almost no rotational moment in the car,
Therefore, a force for displacing the guide rail in the horizontal direction does not act on the area where the guide rail is not centered and fixed via the upper guide roller, and the centering and fixing can be performed easily and accurately.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a hydraulic elevator in operation using the guide rail installation method of the hydraulic elevator according to the present invention. The guide rail 1 is composed of a main rail 1a for guiding the car 5 and a plunger rail 1b for guiding the hydraulic jack 10. Each of the guide rails 1 is arranged in a state where a plurality of the rails are added in the height direction of the hoistway 2, and the uppermost portion thereof. The vicinity is attached to the inner wall of the hoistway 2 by the rail bracket 4 and installed in a temporary state. In the vicinity of the lowermost part of the main rail 1a, which is centered and fixed by the rail bracket 4, a car 5 assembled with only a skeleton is installed. On the upper part of the car 5, an upper guide roller 6 and a temporary work floor 7 are installed. The lower part is provided with a sling 5a, a car floor 5b, a catch device 8, and a lower guide roller 9 which are frames, as shown in FIG. Also,
The hydraulic jack 10 for raising the car 5 is connected to the jack base 11
And the plunger 10 of the hydraulic jack 10 is fixed centered on the hoistway 2 by the jack bracket 12.
The basket 5 is moved through the main rope 13 by raising and lowering a.
Is configured to move up and down. The hydraulic unit 14 installed in the machine room 16 controls the vertical movement of a plunger 10 a connected to the hydraulic jack 10 by an oil feed pipe 15.

Next, a method of installing the guide rail 1 according to the present invention will be described. First, in order to move the work floor 7 to the next fixed position of the rail bracket 4 which fixes the main rail 1a near the lowermost part, the car 5 is moved to the hydraulic jack 1.
Increase by 0. At this time, the car 5 and the work floor 7
From the relationship between the mounting pitch of the
The upper guide roller 6 is located above the rail bracket 4 which is already centered and fixed. Therefore, a rotational moment acts on the car 5 to which the main rope 13 is connected so as to be deviated to the left end of the car floor 5b, and this acts on the main rail 1a which is about to be fixed via the upper guide roller 6, Same main rail 1
The centering and fixing work of a becomes very difficult. So, basket 5
By operating a catch device 8 for emergency stop generally provided at the lower part of the car, the car 5 is fixed to the main rail 1a which has already been centered and fixed, and then the plunger 10a of the hydraulic jack 10 is lowered, The load of the car 5 supported by the main rope 13 is supported by the main rail 1 a via the catch device 8. Since the catch device 8 at the lower part of the car 5 is already positioned at the centered and fixed portion, it is supported by the fixed main rail 1a, so that there is no problem in safety. Since the position of the catch device 8 is close to the vertical line of the center of gravity of the car, there is almost no moment due to an unbalanced load when supported by the main rope 13, and the centering and fixing work can easily obtain the desired accuracy. Can be.

Next, in order to release the catch device 8 and move the work floor 7 to the next fixed position of the main rail 1a, the car 5 is raised by the hydraulic jack 10. Then, the upper guide roller 6 of the car 5 is located above the rail bracket 4 which has been already centered and fixed from the relation of the mounting pitch of the rail 5 and the car 5 and the work floor 7. Therefore, an eccentric load acts on the main rail 1a to be fixed again via the upper guide roller 6, and it becomes very difficult to center and fix the main rail 1a. The main rail 1 on which the car 5 is already centered and fixed by operating the catch device 8 for emergency stop provided at the lower part of the car 1
After that, the main rope 13 is loosened so that the load of the car 5 is supported by the main rail 1a via the catch device 8, and the work is performed in this state as described above.

In this way, the above-described operations are sequentially performed up to the uppermost portion, and the main rail 1a is centered and fixed. The plunger rail 1b is installed near the middle of the hoistway 2 to guide the plunger 10a, but the main rail 1a is sequentially centered and fixed from below, and the same as when the plunger rail 1b comes to the fixed position. By supporting the load of the car 5 on the main rail 1a via the catch device 8, the load that the plunger 10a has received via the main rope 13 is eliminated, and the plunger 1a itself stands vertically. Plunger rail 1
The moment received by b is eliminated, and the centering and fixing operation can easily obtain desired accuracy. In addition, generally, the fixed position of the plunger rail 1b is the main rail 1a.
Since both are at the same position, they can be simultaneously centered and fixed.

[0011]

As described above, according to the present invention, when the guide rail is centered and fixed, the catch device is operated to support the car in the area where the guide rail is centered and fixed, and the main rope is loosened. Therefore, an eccentric load hardly acts on the guide rail via the guide roller, and the centering and fixing thereof can be performed easily and with high accuracy.

[Brief description of the drawings]

FIG. 1 is a front view of a hydraulic elevator employing a method for installing a guide rail of a hydraulic elevator according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Hoistway 5 Basket 7 Work floor 8 Catch device 10 Hydraulic jack 13 Main rope

Continuation of the front page (56) References JP-A-5-97348 (JP, A) JP-A 64-2985 (JP, A) JP-A-58-216877 (JP, A) (58) Fields studied (Int .Cl. ⁶ , DB name) B66B 7/02 B66B 9/04

Claims (1)

(57) [Claims] 1. A work floor is attached to a car floor provided with a catch device, and while the work floor is raised by a hydraulic jack via a main rope, a plurality of spliced guide rails in a temporary state are centered and fixed. In the guide rail installation method for a hydraulic elevator, the work floor is raised by the hydraulic jack, and then the jack device is operated to fix the car floor and the work floor to the guide rail. A guide rail installation method for a hydraulic elevator, wherein the guide rail is supported by a part of the elevator, the main rope is loosened, and then the guide rail near the work floor is centered and fixed.