JPH04217578A - Centering method of guide rail for elevator balancing weight - Google Patents

Abstract

PURPOSE:To perform the centering operation of a balancing weight guide rail automatically. CONSTITUTION:A first roller 34 and a second roller 35 coming into contact with both sides of a guide part 24c is held on a first support bracket 31 being installed in the outer side of a floor plate 21, and a third roller 38 coming into contact with an end face of this guide part 24c is held on a second support bracket 36 orthogonal with the first support bracket 31. Then, those of rollers 34, 35, 38 are engaged with the guide part 24c at lowermost part of an elevator shaft, and the floor plate 21 is driven up and down, thereby regulating three-way positions of the balancing weight guide rail 24a. Thus, a span of centering operation time is reducible and, what is more, highly accurate centering is made performable.

Description

[Detailed description of the invention]

0001

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

0002

2. Description of the Related Art Generally, when installing an elevator, it is necessary to install a car guide rail and a counterweight guide rail on the wall of a hoistway in a centered manner. Conventionally, in the elevator installation method proposed in, for example, Japanese Unexamined Patent Publication No. 55-48182, piano wire is used to center the car guide rail and counterweight guide rail. .

FIG. 3 is a vertical sectional view of a hoistway showing a conventional elevator installation method of this type. A hoistway 2 is formed in the building 1 shown in FIG. 3, and a floor plate 3 for a car that goes up and down in the hoistway 2, a guide rail 5 for the car attached to the wall surface of the hoistway 2 by a rail bracket 4, and a fishing rod. A guide rail 6 for a weight, a machine room 7 provided on the top floor of the building 1, a control device 8 and a hoist 9 provided in this machine room 7, a rope 10 wound around the hoist 9, and a rope 10. A counterweight 11 is connected to the car floor plate 3 via a counterbalance, and an operating cable 12 is connected at one end to the control device 8.

[0004] In the conventional technology configured as described above,
First, in the machine room 7, the center of the car (not shown) and the centers of the car guide rail 5 and the counterweight guide rail 6 are set, and centering with respect to the machine room 7 is performed. Next, a piano wire (not shown), which is used as a reference for setting the car guide rail 5 and the counterweight guide rail 6, is stretched from the machine room 7 toward the bottom of the hoistway 2. After this work, while lifting and connecting the plurality of car guide rails 5 with a winch, the upper end portion of the uppermost car guide rail 5 is fixed with reference to the piano wire. On the other hand, the lower end of the lowest car guide rail 5 is centered on the basis of the piano wire, and is fixed to the wall surface of the hoistway 2 with the rail bracket 4 to be in a temporary state.

After the above work, the control machine 8,
Equipment related to the machine room, such as the hoist 9, is installed, and a low-speed operation circuit is connected. Next, the floor plate 3 and the counterweight 11 are carried into the hoistway 2 and assembled, and the rope 10 is wrapped around each. Then, connect the operating cable 12 from the machine room 7 to the floor plate 3.
The worker gets on the floor plate 3. In this state,
The floor plate 3 is driven upward at a low speed along the car guide rail 5 by the operation of the worker. A worker centers the car guide rail 5 at predetermined intervals based on the piano wire, and fixes it to the wall of the hoistway 2 using the rail bracket 4. In this way, the floor plate 3 is driven at low speed over the entire area of the hoistway 2, and the centering work of the car guide rail 5 is performed over the entire area of the hoistway 2.

After completing the centering work of the car guide rail 5, the floor plate 3 is lowered to the bottom of the hoistway 2, and then
Centering work for the counterweight guide rail 6 is performed. Using piano wire, which is used as a reference for setting the counterweight guide rail 6 stretched from the machine room 7 to the bottom of the hoistway 2, the work is exactly the same as the centering work of the car guide rail 5. Then, the centering work of the counterweight guide rail 6 is performed.

[0007] As described above, in the conventionally proposed elevator installation method, even when centering the counterweight guide rail 6, it is necessary to stretch a reference piano wire and use this piano wire for centering. It was hot. The work of stretching the piano wire is not easy, and this poses a problem in that the installation work of the elevator becomes complicated.

[0008] In order to solve this problem, for example,
A method for centering a guide rail for a counterweight is disclosed in Japanese Patent No. 3-2871.

FIG. 4 is a plan view of the inside of a hoistway showing a conventional method for centering a counterweight guide rail of an elevator. It is assumed that the centering work of the car guide rail 24 is performed in the same manner as the conventionally proposed method described above.

Inside the hoistway 20 shown in FIG. 4, there are a floor plate 21 of the car, an outer frame 22 attached around the floor plate 21,
Car guide rails 23a, 23b, counterweight guide rails 24a, 24b, and car guide rails 23
The car includes rail brackets 25a and 25b for fixing the car, rail brackets 26a and 26b for the counterweight for fixing the guide rail 24 for the counterweight, and a reference surface 27 formed on the outer frame 22. . Also, if the worker
It has a scale 28 that corresponds to 7.

In the method of centering the conventional counterweight guide rails 24a and 24b constructed as described above, first, the outer frame 22 is attached around the floor plate 21, and the outer frame 2
A reference surface 27 is formed at a predetermined position of 2. As described above, each of the car guide rails 23a and 23b is
Since the car rail bracket 25 is fixed to the wall surface 20a of the hoistway 20 in a centered state, the reference plane 27 is fixed to the wall surface 20a of the hoistway 20 in a centered state. It is always at a constant distance from the guide rails 23a and 23b.

In this state, the floor plate 21 is suspended at the lowest position within the hoistway 20. At this time, the upper ends of the counterweight guide rails 24a, 24b are fixed at preset reference positions in a machine room (not shown). Then, the worker gets on the floorboard 21, and the worker gets on the floorboard 21.
is driven upward at a low speed, a scale 28 is applied to the reference surface 27 as shown in the figure, and the guide rail 24b for the balance weight is centered by the scale marked on the scale 28. Next, in the centered state, install the guide rail 2 for the counterweight.
4b to the wall surface 20 with the counterweight rail bracket 26b.
Fix it to a. Such operations are performed at predetermined intervals to center and fix the entire area of the counterweight guide rails 24a, 24b.

[0013]

[Problems to be Solved by the Invention] By the way, in the conventional example shown in FIG. 4 mentioned above, the complicated piano wire tensioning work required in the conventional example shown in FIG. 3 can be eliminated. . However, in the centering work of the counterweight guide rail 24, the worker visually checks the scale 27 at predetermined intervals and checks the deviation of the counterweight guide rail 24 by, for example, 0.5.
Since it is necessary to make adjustments within mm, there is a problem that the workability is poor and a great deal of effort is required.

The present invention has been made in view of the above points, and
The object thereof is to provide a method for centering a guide rail for a counterweight in an elevator, which can automatically center the guide rail for a counterweight.

[0015]

[Means for Solving the Problems] In order to achieve this object, the present invention temporarily installs a car guide rail and a counterweight guide rail in the hoistway, and after this temporary installation, the guide rails are installed in the hoistway. Install the floorboard and counterweight of the car, and while driving the floorboard and counterweight of the car, center the temporarily installed guide rail for the car. In the method for centering the guide rail for a counterweight of an elevator, in which the temporarily installed guide rail for a counterweight is later centered, a plurality of rollers are rotatably attached to a support bracket fixed to the outer surface of the floorboard of the car. The balance weight guide rail is held and the position of at least three sides of the temporarily installed counterweight guide rail is regulated by the roller group to center the balance weight guide rail.

[0016]

[Operation] As described above, the support bracket fixed to the outer surface of the floorboard includes, for example, a pair of left and right first and second support brackets.
Three rollers, a roller and a third roller arranged in a direction perpendicular to the first and second rollers, are rotatably held. The pair of first and second rollers rotate while contacting both side surfaces of the guide section of the counterweight guide rail, and the third roller contacts the protruding end surface of the guide section. It is possible to rotate.

Therefore, when centering the guide rail for the counterweight, the three rollers mentioned above are engaged with the temporarily installed guide rail for the counterweight, and in this state, the floor plate of the car is driven upward. As a result, the position of the counterweight guide rail is regulated on three sides by the three rollers, and positioning, that is, centering, with respect to the floorboard is performed.

[0018] Thereby, the work of centering the guide rail for the counterweight can be performed automatically.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method for centering a guide rail for a counterweight of an elevator according to the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of the inside of a hoistway showing an embodiment of the method for centering a guide rail for a counterweight of an elevator according to the present invention. FIG. 2 is a plan view of main parts showing details of the roller group. Note that the same parts as in FIG. 4 described above are indicated by the same symbols,
The explanation will be omitted.

As shown in FIG. 2, a first support bracket 31 is fixed and protrudes outward from a bracket support base 30 fixed to the outer surface of the floorboard 21 shown in FIG. The first support bracket 31 rotatably holds a first roller 34 via a support shaft 32 and a second roller 35 via a support shaft 33.
The distance between the counterweight guide rail 24a and the second roller 35 is
This corresponds to the width of the guide portion 24c. And guide section 2
A first roller 34 and a second roller 35 are in contact with both side surfaces of the roller 4c.

Further, a second support bracket 36 is attached and fixed to the first support bracket 31 so as to be orthogonal to the first support bracket 31. A third roller 38 is rotatably held. This third roller 38 is adapted to come into contact with the end surface of the guide portion 24c. Note that although the counterweight guide rail 24a side has been described here, the counterweight guide rail 24b side has a similar configuration, so the explanation will be omitted.

In this embodiment, when centering the counterweight guide rails 24a, 24b, the floor plate 21 is first suspended at the lowest part of the hoistway 20. At this time, it is assumed that the upper ends of the counterweight guide rails 24a and 24b are fixed at a preset reference position in a machine room (not shown), as in the prior art. And the first roller 34,
The second roller 35 and the third roller 38 are engaged with the guide portions 24c of the temporarily installed counterweight guide rails 24a and 24b, and in this state, the worker gets on the floor plate 21 and moves the floor plate 21 at a low speed. to drive it upward. As the floor plate 21 is driven upward, the balance weight guide rails 24a and 24b are positionally regulated on three sides by the first roller 34, second roller 35, and third roller 38, and centering is performed. Next, the worker stops the floorboard 21 at predetermined intervals and fixes the centered guide rails 24a and 24b for the counterweight to the wall surface 20a using the rail brackets 26a and 26b.

In this embodiment configured as described above, the centering work of the guide rail for the counterweight can be automatically performed.

[0025]

[Effects of the Invention] As explained above, according to the present invention,
Since the centering of the guide rail for the counterweight is automatically performed by the roller group, centering the guide rail for the counterweight is easy, and the work time for centering can be significantly reduced. Therefore, the efficiency of guide rail installation work can be improved. Furthermore, it is possible to perform centering with higher precision than when centering is performed visually by an operator.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the inside of a hoistway showing an embodiment of a method for centering a guide rail for a counterweight of an elevator according to the present invention.

FIG. 2 is a plan view of main parts showing details of a roller group.

FIG. 3 is a longitudinal sectional view of a hoistway showing a conventional elevator installation method.

FIG. 4 is a plan view of the inside of a hoistway showing a conventional method for centering a counterweight guide rail of an elevator.

[Explanation of symbols]

20 Hoistway 21 Floor plates 23a, 23b Car guide rails 24a, 24
b Counterweight guide rails 25a, 25b Car rail brackets 26a, 26b Counterweight rail bracket 30 Bracket support base 31 First support brackets 32, 33 Support shaft 34 First roller 35 Second roller 36 Second Support bracket 37 Support shaft 38 Third roller

Claims (1)

[Claims] Claim 1: A guide rail for a car and a guide rail for a counterweight are temporarily installed in the hoistway, and after this temporary installation, a floor plate and a counterweight for the car are installed in the hoistway. While driving the floorboard and counterweight, center the temporarily installed car guide rail, and after centering the car guide rail, center the temporarily installed counterweight guide rail. In a method for centering a guide rail for a counterweight in an elevator, a plurality of rollers are rotatably held on a support bracket fixed to the outer surface of the floorboard of the car;
A guide rail for a counterweight of an elevator, characterized in that the position of at least three sides of the temporarily installed guide rail for a counterweight is regulated by the group of rollers to center the guide rail for a counterweight. Centering method.