JPH09272668A - Clearance measuring method and jig for elevator counterbalance weight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To measure the clearance of an elevator counterbalance by a single worker. SOLUTION: A measuring jig 12 is fitted to a guide rail 10 beforehand. A worker then operates an elevator cage up to the top floor once and then down to the bottom floor. The measuring jig 12 is pushed down by a descending counterbalance weight as a roller 14 rotates and runs on the guide rail 10. When the counterbalance weight ascends, the guide rail 10 is magnetically magnetizes by a magnet 15 and securely positioned to the lowest position of the counterbalance weight. The worker then gets off the elevator cage and goes into a pit where he measures the clearance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator counterweight clearance measuring method and a clearance measuring jig.

[0002]

2. Description of the Related Art FIG. 6 is a view for explaining a conventional method for measuring a counterbalance clearance of an elevator. In the figure, 1 is an elevator hoistway, 2 is a machine room provided above the hoistway 1, and 3 is a boarding room. Basket, 4 counterbalances, 5
Is a drive sheave 6 and a deflector 7 installed in the machine room 2.
, A main rope having a car 3 connected to one end thereof and a counterweight 4 connected to the other end thereof, 8 is a shock absorber installed directly below the counterweight 4 in the pit 1a of the hoistway 1, 9 Counterbalance weight 4 bottom and shock absorber 8
It is a measure for measuring the clearance A (clearance A) from the upper surface of the.

Next, a conventional method for measuring the clearance of the counterweight will be described. In the elevator, a drive sheave 6 is driven by a drive device (not shown) to drive the main ropes 5, and the car 3 moves up and down in the hoistway 1. The length of the main rope 5 increases with age, and the clearance A changes. Therefore, at the time of maintenance and inspection, this clearance A is measured and maintained. To measure this clearance A, one worker gets in the car 3 and lands on the top floor. Also,
With the other worker descending into the pit 1a and the car 3 stopped on the top floor, the counterweight 4 and the shock absorber 8
The clearance A between and is measured with a measure 9. When the clearance A exceeds the predetermined range, the length adjusting work of the main rope 5 is performed.

[0004]

Conventionally, since the clearance of the counterweight has been measured as described above, the operator who gets into the car 3 and operates to the uppermost floor, and the clearance A that goes into the pit 1a, can be used. There was a problem that two workers, a worker for measurement, are required.

The present invention has been made in order to solve the above problems, and provides an elevator counterweight clearance measuring method and a clearance measuring jig by which one operator can measure the clearance of the elevator counterweight. The purpose is to get.

[0006]

According to a first aspect of the present invention, there is provided a method for measuring an elevator counterweight clearance, in which an elevator car and a counterweight are hung by a main rope in a hanging manner so as to move up and down in a hoistway. In the method for measuring the balance weight of elevators, the step of mounting the clearance measuring jig on the guide rail that guides the lifting of the balance weight in the hoistway pit so that it can move up and down, and raising the car to the top floor The step of lowering the counterweight and pushing down the clearance measuring jig with the descending counterweight, and after lowering the car, move between the shock absorber installed below the counterweight in the pit and the clearance measuring jig. And a step of measuring the clearance.

The elevator counterweight clearance measuring method according to a second aspect of the present invention is the same as the first aspect, wherein the measure is previously extended downward from the clearance measuring jig and the position of the shock absorber is adjusted. The clearance between the shock absorber and the clearance measuring jig is measured from the scale of the measure corresponding to.

Further, the elevator counterweight clearance measuring method according to a third aspect of the present invention is such that, in the first aspect of the invention, zone markings corresponding to the clearance allowable range are provided on the guide rails in advance and then descend. The clearance is measured according to whether or not the clearance measuring jig pushed down by the counterweight is located in the zone marking.

The elevator counterweight clearance measuring jig according to the fourth aspect of the present invention is mounted on a guide rail that extends in the hoistway in the ascending and descending direction of the counterweight and guides the counterweight. An elevator counterweight clearance measurement jig that is pushed down by the counterbalance weight that descends, and a U-shaped body composed of a pair of opposing support pieces and a connection piece that connects and integrates the pair of support pieces, A pair of rollers are rotatably supported, and a pair of rollers that run while rotating while sandwiching the guide rail when the main body is pushed down by the counterweight and attached to the connecting piece to lower the main body by the counterweight. With a magnet that magnetically attracts the guide rail when it is released and fixes the main body to the guide rail. A.

Further, an elevator counterweight clearance measuring jig according to a fifth aspect of the present invention is the same as the fourth aspect, wherein the pair of rollers are biased in a direction in which they approach each other. Is supported by.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1. 1 is a sectional view showing a mounting state of a measuring jig in an elevator counterweight clearance measuring method according to a first embodiment of the present invention, and FIG. 2 shows an elevator counterweight clearance measuring method according to a first embodiment of the present invention. FIG. 6 is a side view showing, in FIG.
The same or corresponding portions as those of the conventional counterweight clearance measuring method shown in FIG.

In the figure, 10 is a guide rail extending in the ascending / descending direction of the counterweight 4 in the hoistway 1,
The guide rail 10 engages with a guide shoe 11 installed on the counterweight 4 to guide the lifting of the counterweight 4. Reference numeral 12 is a clearance measuring jig, and the clearance measuring jig 12 is a pair of opposing support pieces 1.
3a and a main body 13 having a U-shape composed of a connecting piece 13b for connecting and integrating the pair of supporting pieces 13a,
The main body 13 includes a pair of rollers 14 rotatably supported by the pair of support pieces 13a, and a magnet 15 attached to a connecting piece 13b of the main body 13.

Next, the clearance measuring method according to the first embodiment will be described. First, an operator enters the pit 1 a and mounts the clearance measuring jig 12 on the guide rail 10 below the counterweight 4. In this clearance measuring jig 12, the guide rail 10 is the main body 1
It is attached so as to enter the U-shaped concave portion of 3. Then, the magnet 15 is held by the attraction force of the magnet 15 without falling onto the guide rail 10. Further, the pair of rollers 14 sandwich the guide rail 10 from both sides, and the outer peripheral surface thereof is in contact with the guide rail 10.

In this way, the clearance measuring jig 12
After attaching the guide rail 10 to the
Get on. Then, the car 3 is once raised to the top floor and then lowered to the bottom floor. At this time, the counterweight 5 descends to the lowest point in synchronization with the raising / lowering operation of the car 3 and then rises. And the clearance measurement jig 1
As shown in FIG. 2, 2 abuts on the guide shoe 11 of the descending counterweight 5, and is pushed downward by the descending force of the counterweight 5. Therefore, the clearance measuring jig 12 travels on the side surface of the guide rail 10 and smoothly descends while the pair of rollers 14 rotate. Then, when the counterweight 4 rises, the clearance measuring jig 1
The magnet 2 is held and positioned by the attraction force of the magnet 15 without being lowered on the guide rail 10. The position of the clearance measuring jig 12 at this time corresponds to the lowest point position of the counterweight 4. Next, the worker is in the car 3
Landed on the bottom floor, got off the car 3 and got to pit 1
Get off in a. The clearance A between the upper surface of the main body 13 of the clearance measuring jig 12 and the upper surface of the shock absorber 8 is
1 is measured with a measure 9.

As described above, according to the first embodiment,
The clearance between the counterweight 5 and the shock absorber 8 is 1
An elevator counterweight clearance measurement method that can be measured by a human operator is obtained. Further, since the main body 13 is provided with the magnet 5, the main body 13 can be positioned at the lowest position of the counterweight 4, and a clearance measuring jig capable of accurately measuring the clearance can be obtained. Furthermore, the main body 1
Since the pair of rollers 14 is rotatably attached to the roller 3, when the counterweight 4 exerts a downward force on the main body 13, the roller 14 can travel while rotating on the guide rail 10, and the main body 13 can smoothly descend. A clearance measurement jig that can be used for

Embodiment 2 In the above-described first embodiment, the operator holds the measure 9 and descends into the pit 1a to measure the clearance.
Then, as shown in FIG. 3, the measure 9 is previously fixedly installed along the guide rail 10. In this case, by setting the 0 scale of the measure 9 so as to be aligned with the upper surface of the shock absorber 8, the operator can read the scale of the measure 9 corresponding to the upper surface of the clearance measuring jig 12 that is stopped. Clearance can be measured. Therefore, the worker does not need to carry the measure 9 around, and the workability can be improved.

Embodiment 3 In the above-described first embodiment, the operator holds the measure 9 and descends into the pit 1a to measure the clearance.
Then, as shown in FIG. 4, the measure 9 is fixedly installed on the main body 13 of the clearance measuring jig 12.
In this case, the 0 scale of the measure 9 is extended downward so as to be aligned with the upper surface of the main body 13 so that the operator can measure the clearance by reading the scale of the measure 9 corresponding to the upper surface of the shock absorber 8. You can Therefore, also in the third embodiment, the same effect as that of the second embodiment can be obtained.

Embodiment 4 In the first embodiment, the operator holds the measure 9 and descends into the pit 1a to measure the clearance.
Then, as shown in FIG. 5, the guide rail 10 is provided with zone markings 16 having an allowable range C with respect to the reference value B of the clearance. In this case, the operator may visually determine whether the clearance measuring jig 12 is located within the zone marking 16 or not. Therefore, the operator can easily confirm the clearance from the landing without getting down in the pit 1a. When the clearance measuring jig 12 is located outside the zone marking 16, the length of the main rope 5 is adjusted.

Embodiment 5 In the first embodiment, the pair of rollers 14 are rotatably supported by the pair of support pieces 13a, respectively, but in the fifth embodiment, the pair of rollers 14 are attached in a direction in which the rollers 14 approach each other. It is supposed to be urged and rotatably supported by the pair of support pieces 13a. In this case, clearance measurement jig 1
2 is mounted on the guide rail 10, the pair of rollers 1
4 is in contact with the guide rail 10 from both sides. Therefore, the clamping force of the pair of rollers 14 acts in addition to the attraction force of the magnet 15, and the clearance measuring jig 12 can be prevented from falling. Further, since the pair of rollers 14 contact the guide rail 10 from both sides and travel while rotating, the descending movement of the clearance measuring jig 12 by the descending counterweight 4 is performed more smoothly.

[0020]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, in the method for measuring the balance weight clearance of an elevator, in which the car and the counterweight are suspended by a main rope in a hanging manner, and the elevator weight is vertically moved, In the pit, the process of mounting a clearance measurement jig on the guide rail that guides the lifting of the counterweight so that it can move up and down, and by moving the car up to the top floor to lower the counterweight and lowering the counterweight, the clearance is measured by the counterweight. Since it has a step of pushing down the jig and a step of measuring the clearance between the shock absorber installed below the counterweight in the pit and the clearance measuring jig after the car is lowered, A counterweight clearance measurement method that allows one operator to easily measure clearance It is.

According to a second aspect of the present invention, the first aspect
In the invention described above, the measure is previously extended downward from the clearance measuring jig, and the clearance between the shock absorber and the clearance measuring jig is measured from the scale of the measure corresponding to the position of the shock absorber. The worker does not need to carry the measure, and the workability can be improved accordingly.

According to a third aspect of the present invention, the first aspect
In the invention of 1, the zone marking corresponding to the allowable range of the clearance is provided on the guide rail in advance, and the clearance is measured depending on whether or not the clearance measuring jig pushed down by the descending counterweight is positioned in the zone marking. Therefore, the operator can measure the clearance without getting down in the pit, and the workability can be improved.

According to the fourth aspect of the present invention, the elevator is installed in the hoistway in the ascending and descending direction of the counterweight and is attached to the guide rail for guiding the counterweight, and is lowered by the descending counterweight. A counterweight clearance measuring jig, which is a U-shaped body composed of a pair of opposing support pieces and a connecting piece that connects and integrates the pair of support pieces, and is rotatably supported by the pair of support pieces. When the main body is pushed down by the counterweight, it is attached to the pair of rollers that run while rotating while sandwiching the guide rail and the connecting piece, and when the lowering of the main body by the counterweight is released, the guide rail is magnetically moved. Since it is equipped with a magnet that attracts to the body and secures the main body to the guide rail, the main body slides on the guide rail when the counterweight descends. Descends over's, is positioned and fixed to the guide rail in the lowest position of the body counterweights by increasing the counterweight, clearance measurement jig can be accurately measured clearance is obtained.

According to the fifth aspect of the present invention, the fourth aspect
In the invention of claim 1, since the pair of rollers are biased in the direction of approaching each other and supported by each of the pair of support pieces, the clamping force of the pair of rollers acts in addition to the attraction force of the magnet, The positioning can be reliably performed, and when the main body descends, the pair of rollers abut on both surfaces of the guide rail to rotate and travel, whereby the lowering operation of the main body is performed more smoothly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a mounted state of a counterweight clearance measuring jig for an elevator according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining an elevator counterweight clearance measuring method according to the first embodiment of the present invention.

[Fig. 3] Fig. 3 is a diagram for explaining an elevator counterweight clearance measuring method according to a second embodiment of the present invention.

[Fig. 4] Fig. 4 is a diagram for explaining an elevator counterweight clearance measuring method according to a third embodiment of the present invention.

FIG. 5 is a diagram illustrating a method for measuring an elevator counterweight clearance according to a fourth embodiment of the present invention.

FIG. 6 is a diagram illustrating a conventional method for measuring a counterbalance weight clearance of an elevator.

[Explanation of symbols]

1 hoistway, 1a pit, 3 car, 4 counterweight, 5 main ropes, 8 shock absorbers, 9 major,
10 guide rails, 12 clearance measurement jigs, 1
3 body, 13a support piece, 13b connection piece, 14 roller, 15 magnet, 16 zone marking.

Claims (5)

[Claims] 1. A method for measuring a counterweight clearance of an elevator, wherein a car and a counterweight are suspended by a main rope in a hanging manner so as to move up and down in a hoistway. The step of mounting the clearance measuring jig on the guide rail that guides the vehicle so that the clearance measuring jig is moved up and down to the uppermost floor to lower the balance weight, and the clearance measuring jig is moved downward by the balance weight. And a step of measuring a clearance between a shock absorber installed below the counterweight in the pit and the clearance measuring jig after the car is lowered. Elevator balance weight clearance measuring method. 2. A measure is previously extended downward from the clearance measuring jig, and the clearance between the shock absorber and the clearance measuring jig is measured from the scale of the measure corresponding to the position of the shock absorber. The method according to claim 1, wherein the counterweight clearance for elevators is measured. 3. A zone marking corresponding to a clearance allowable range is previously provided on the guide rail,
2. The elevator clearance counterweight clearance measuring method according to claim 1, wherein the clearance is measured depending on whether or not the clearance measuring jig pushed down by the descending counterweight is positioned in the zone marking. 4. A balancing weight clearance measuring jig for an elevator, which is mounted in a guide rail extending in the ascending / descending direction of a balancing weight in a hoistway to guide the balancing weight, and which is pushed down by the descending balancing weight. , A U-shaped body composed of a pair of opposing support pieces and a connecting piece that connects and integrates the pair of support pieces, and the pair of support pieces are rotatably supported by the balance weights, respectively. When the main body is pushed down, a pair of rollers running while rotating while sandwiching the guide rail, and attached to the connecting piece, when the pushing down of the main body by the counterweight is released, the guide rail is magnetically moved. A balance weight for an elevator, comprising a magnet for attracting and fixing the main body to the guide rail. Aransu measurement jig. 5. The jig according to claim 4, wherein the pair of rollers are urged in a direction of approaching each other and supported by each of the pair of support pieces.