JPH06156927A - Centering device for elevator - Google Patents

Abstract

PURPOSE:To provide a centering device by which a laser transmitter can be easily provided, and the distance from the laser transmitter to the laser detector can always be shortened. CONSTITUTION:This centering device is provided with a laser transmitter 10 to emit a laser ray 10a in the vertical direction, a supporting body 13 provided on a car frame or mounted on a car emergency stop device 11 and supporting the laser transmitter 10, a rail holding body 13 to hold a decided position of a guide rail, and a laser detector 14 fitted to the rail holding body and detecting the lase ray 10a. Thereby, improvement of workability, accurate centering, and curtailment of the cost of equipments can be attained, and interception of the laser ray due to dust can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator centering device, and more particularly to an elevator centering device for centering a guide rail based on laser light emitted from a laser oscillator.

[0002]

2. Description of the Related Art Conventionally, an elevator centering device has been provided in which a laser oscillator is installed at the bottom or the top of a hoistway and the guide rail is centered on the basis of the laser light emitted from the laser oscillator. there were. Examples of this type of centering device include JP-A-59-43785 and JP-A-57-57177.

[0003]

By the way, in the above-described conventional centering device for elevators, it is necessary to emit laser light from the laser oscillator in the vertical direction. However, this laser light should be emitted in the vertical direction. There is a problem that it takes time to install the laser oscillator on the other hand, on the other hand, a machine that can automatically set the vertical position of the laser beam becomes very expensive, and it is not suitable for use in the field where the machine often breaks down. There was a problem. Also, since the laser transmitter is installed at the bottom or top of the hoistway, especially in the case of a building with a high floor,
The distance from the laser oscillator to the laser detector becomes longer,
For this reason, the laser spot becomes large and it becomes difficult to confirm the center position, the laser light is blocked by dust and dust at the work site, and a high-power laser oscillator is required, which makes the machine expensive. Not only that, but there was the problem of poor safety.

The present invention has been made in view of the circumstances in the prior art as described above, and an object thereof is to easily install a laser oscillator and to keep the distance from the laser oscillator to the laser detector always close. An object of the present invention is to provide an elevator centering device capable of achieving a distance.

[0005]

To achieve this object, the present invention elevates and lowers a main car frame and a car floor installed in a hoistway, and guides a guide rail to a wall portion of the hoistway. In a centering device for an elevator used for fixing the laser beam, a laser oscillator that emits a laser beam in a vertical direction and a car emergency stop device provided in the car frame, and a support body that supports the laser oscillator. And a rail gripping body for gripping the guide rail at a predetermined position, and a laser detector attached to the rail gripping body for detecting the laser light.

[0006]

Since the present invention is constructed as described above, first, the pair of lowermost guide rails are erected on the lower part of the hoistway with the standard black as a reference, and the car frame and the car floor of the main installation are installed. Assemble. Then, when centering a guide rail that is erected in the hoistway and is not centered, the car emergency stop device provided on the car frame is positioned on the lowermost guide rail that is centered and fixed. As a result, the laser oscillator attached to the car safety device through the support emits laser light in the vertical direction. On the other hand, the rail gripper to which the laser detector is attached grips a predetermined position of the guide rail, that is, the guide rail for centering. Then, the operator adjusts the position of the guide rail gripped by the rail grip body, that is, by adjusting the center position of the laser detector integrated with the guide rail to the laser beam, The guide rail is centered. Then, while moving the car frame and the car floor to the guide rails for which centering has been completed, centering is performed sequentially up to the uppermost guide rail in the same procedure.

As described above, the laser oscillator attached to the car emergency stop device can emit laser light in the vertical direction by locating the car emergency stop device on the guide rail that has been centered and fixed. The transmitter can be installed. Further, the distance between the laser oscillator and the laser detector can always be made short.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an elevator centering device of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing an outline of a laser oscillator and a laser detector showing an embodiment of an elevator centering device of the present invention, and FIG. 2 shows a state in which the laser oscillator is installed in a car in a hoistway. 3 is a perspective view showing FIG.
FIG. 4 is a plan view of the laser detector of FIG. 1, and FIG. 4 is a cross-sectional view showing a main part of the laser detector.

As shown in FIG. 2, the elevator is generally fixed to the lowermost guide rail 2 and other guide rails 3 standing in the hoistway 1 and the guide rails 2 on the wall portion 1a of the hoistway 1, respectively. It has a bracket 4 for moving, a car floor 5 and a car frame 6 which are guided by the guide rails 2 and 3 to move up and down in the hoistway 1. Further, the car frame 6 includes slings 6a that are erected on both sides of the car floor 5 and cross heads 6b that are hung between these slings 6a. Above the cross heads 6b, A temporary work floor 7 having handrails 7a is installed.

As shown in FIG. 2, the elevator centering device of this embodiment is mounted on a laser oscillator 10 for emitting a laser beam 10a in the vertical direction and a car emergency stop device 11 provided on the sling 6a. And laser oscillator 10
A support body 12 for supporting the guide rail 3, a rail grip body 13 for gripping a predetermined position of the guide rail 3 as shown in FIG. 3, and a laser detector 14 attached to the rail grip body 13 for detecting the laser beam 10a. The rail gripping body 13 and the laser detector 14 are integrally formed as a guide rail centering member 15. Further, as shown in FIG. 2, the car emergency stop device 11 has a wedge-shaped fitting portion 11a and operates by pulling up the pulling rod. The laser detector 14 has a laser beam 10 as shown in FIG. 4 in order to ensure the safety of the operator.
It is semi-transparent, for example, with a paper 14c interposed between the upper glass 14a and the lower glass 14b so that the operator can confirm only the portion where the laser light 10a is received, not the light that completely transmits a. . As shown in FIG. 2, the laser oscillator 10 is turned on and off for further safety.
A switch 16 for turning on is provided on the work floor 7 so that the laser beam 10a can be emitted after the guide rail centering member 15 is attached so that the laser beam 10a is not directly looked at when the support 12 is attached. I am trying.

In this embodiment, first, a hoisting machine and other parts are unloaded in a machine room (not shown), these machine room devices are installed, and a shock absorber is installed in the lower part of the hoistway 1, and then the The lower guide rail 2 is installed upright. In general, it is necessary to fix two guide rails to the wall portion 1a with one bracket, but it is also necessary to center and fix the lowermost guide rail 2 at the bottom of the hoistway 1. That is, the lowermost guide rail 2 is centered at three places including the connection with the shock absorber. Centering and fixing the bottom of the hoistway and the first bracket is 1
The standard black ink of the building attached to the floor of the floor is used, and the centering and fixing of the second stage bracket 4 is performed using a jig such as plumb bob. Next, other guide rails 3
All are erected in the hoistway 1, and then the car floor 5, the car frame 6 and the working floor 7 are assembled at the bottom of the hoistway 1 and can be hoisted by a hoisting machine via a plurality of ropes not shown. And

Next, the operator gets on the work floor 7 and moves the work floor 7 to the height position A shown in FIG. 2 where the next centering and fixing portion of the bracket 4 which has been centered and fixed is located. When the working floor 7 reaches the height position A, the car emergency stop device 11 is located below the bracket 4 at this time. That is, the lowermost guide rail 2 centered and fixed
Located in. When the work floor 7 reaches the height position A, the worker pulls up the pulling rod and operates the car emergency stop device 11, whereby the fitting device 11a moves to the guide rail 2
Then, the car floor 5, the car frame 6 and the working floor 7 are stopped. At this time, by fitting the fitting device 11a to the lowermost guide rail 2, the car emergency stop device 11 maintains a certain degree of parallelism with the lowermost guide rail 2, and therefore, the car emergency Support 1 for stop device 11
The laser oscillator 10 attached via 2 can emit laser light in the vertical direction.

Next, the worker temporarily fixes the bracket to the guide rail 3 at the height position A, holds the guide rail 3 with the rail gripping body 13 in a state where the centering work 15 is suspended over the handrail 7a. Let After this, switch 1
When 6 is turned on, the laser beam 10a is emitted from the laser oscillator 10, and the laser beam 10a is detected by the laser detector 14. Then, the operator adjusts the temporarily fixed bracket while confirming the position of the laser beam 10a by the laser detector 14, that is, the center position of the laser detector 14 integrated with the guide rail 3. Is aligned with the laser beam 10a, the guide rail 3 is centered. Thereafter, while moving the car frame 5, the car floor 6 and the working floor 7 to the guide rails after the centering is completed, the uppermost guide rails are sequentially centered by the same procedure.

In the embodiment constructed as described above, the laser transmitter 10 attached to the car emergency stop device 11 is arranged so that the car emergency stop device 11 is positioned on the guide rail which has been centered and fixed. Since it can emit light, the laser oscillator 10 can be easily installed. Further, the distance between the laser oscillator 10 and the laser detector 14 can always be a short distance of about one guide rail.

Although the laser beam 10a emitted from the laser oscillator 10 is emitted in the vertical direction as described above, to be precise, it includes an error within a range where the guide rail installation accuracy can be satisfied. ing.

[0016]

Since the present invention is configured as described above, it is possible to easily install the laser oscillator, thereby improving workability. The distance between the laser oscillator and the laser detector can always be set to a short distance of about one guide rail, which prevents the laser spot from increasing and enables high-precision centering. It is possible to prevent the laser light from being blocked by dust and dust at the work site. Furthermore, there is an effect that centering can be performed with high accuracy even with a low-power laser oscillator, and equipment cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an outline of a laser oscillator and a laser detector showing an embodiment of an elevator centering device of the present invention.

FIG. 2 is a perspective view showing a state in which a laser oscillator constituting the embodiment shown in FIG. 1 is installed in a car in a hoistway.

FIG. 3 is a plan view of the laser detector of FIG.

FIG. 4 is a cross-sectional view showing the main parts of the laser detector of FIG.

[Explanation of symbols]

 1 Hoistway 1a Wall 2 Guide rail at the bottom 3 Other guide rails 5 Car floor 6 Car frame 10 Laser transmitter 10a Laser light 11 Car emergency stop device 12 Support 13 Rail gripper 14 Laser detector 15 Centering employment

Claims (1)

[Claims] 1. A vertical centering device for an elevator used when vertically moving a main car frame and a car floor installed in a hoistway and centering and fixing a guide rail to a wall portion of the hoistway. A laser oscillator that emits a laser beam in a direction, a support body that is mounted on a car emergency stop device provided in the car frame, supports the laser oscillator, and a rail gripping body that grips a predetermined position of the guide rail. A centering device for an elevator, comprising: a laser detector attached to the rail gripping body to detect the laser light.