JPH0344995B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elevator rope length measuring device.

[Conventional technology]

For rope-type elevators in which the car and counterweight are hung in a hanging manner via ropes supported by a sheave and a beam pulley, the rope should be adjusted when replacing the rope, taking into account the elongation of the rope caused by the load. You need to measure the length.

Conventionally, such rope length measurement work involves moving a counterweight to the lowest end and fixing it, then hoisting the car to the highest end using a chain or the like, and then removing the loosened rope from the hoistway. The new rope was attached to the old rope on a flat surface to measure the length when it was installed. Or, JP-A-59-78085
As stated in the publication, workers are placed above the car in the hoistway and in the machine room, and the worker on the car holds the end of the measuring tape that the worker in the machine room hangs down. The length of the rope in the mounted state was measured by matching the ends.

[Problem that the invention seeks to solve]

However, rope length measurement methods that use flat land use the road as a flat land, so there is a risk that dirt or debris may adhere to the new rope, causing wear on the sheave after installation, or Due to certain circumstances, it was difficult to secure flat land. In addition, there are at least two methods of measuring the length of the mounted rope by placing a worker in the machine room or above the car.
This method requires a human worker, and there is a problem in that the worker on the car is forced to lean forward in an unstable posture when measuring the length of the rope on the counterweight side.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an elevator rope length measuring device that can safely and easily measure the length of an elevator rope accurately even by one person.

[Means for solving problems]

The above object is an elevator rope length measuring device in which a car and a counterweight are hung in a hanging manner via a rope supported by a sheave and a beam pulley. This is achieved by including a slider that can freely hang down and a measuring tape whose tip end is fixed to the slider.

[Operation] That is, according to the present invention, a worker in the machine room hangs the slider of the rope length measuring device along the rope, and when the slider collides with the rope socket and stops, the worker By reading the scale on the measuring tape, the length of the rope from the machine room floor to the car or counterweight can be safely and easily measured.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 and 2 are for explaining one embodiment of the present invention; Figure 1 is a schematic diagram showing how the rope length is measured in the section from the machine room floor to the car; The figure is an enlarged view of the part A surrounded by the broken line in FIG. 1.

In these figures, 1 is the machine room floor, 2 is the sheave, 3 is the beam pulley, 4 is the rope, 5 is the cage,
Reference numeral 6 denotes a counterweight, and the car 5 and the counterweight 6 are suspended in a hanging manner via a rope 4 supported by the sheave 2 and the beam pulley 3. Rope sockets 7 are attached to both ends of the rope 4, that is, to the tops of the cage 5 and the counterweight 6, respectively. 8
9 is a slider, and 9 is a length measuring tape, which constitute a rope length measuring device.
is fixed to the side. Further, the slider 8 can be attached to and detached from the rope 4 using a stopper 10 and a hinge 11, and the inner diameter of the mounting hole 8a is designed to be slightly larger than the outer diameter of the rope 4.

If you want to measure the length of the rope 4 in the mounted state, after matching the height position of the top surface of the cage 5 with the height position of the top surface of the counterweight 6, as shown in FIG. In the machine room, the worker first fixes the length measuring tape 9 to the side surface of the slider 8 using the presser plate 12 and the set screw 13, removes the stopper 10, splits the slider 8 open, and then opens the slider 8. Attach it to the rope 4 above point B in Figure 1 and hang the stopper 10. After the rope 4 is inserted into the mounting hole 8a of the slider 8 in this manner, the worker suspends the slider 8 from the machine room floor 1 along the rope 4. When the slider 8 collides with the rope socket 7 on the car 5, the worker on the machine room floor 1 can tell by the feeling of the collision that the slider 8 has reached point A, which is the lowest point of the rope 4. As you can confirm, the measuring tape 9 at point B
By reading the scale, find the length between A and B,
In other words, the length of the rope 4 in the section from the car 5 to the machine room floor 1 directly above the button can be measured.

Similarly, measure the length between C and D on the counterweight 6 side, that is, the length of the rope 4 in the section from the counterweight 6 to the machine room floor 1 directly above the button.

After that, remove the measuring tape 9 from the slider 8,
After fixing the tip of the length measuring tape 9 at point B, the worker on the machine room floor 1 manually runs the length measuring tape 9 along the rope 4 between B and C. Read the scale. Thereby, the length of the rope 4 in the section from point B to point C via the sheave 2 and beam pulley 3 can be measured.

After measuring the length of the rope 4 in each section between A and B, B and C, and C and D in this way,
The total length of the rope 4 can be determined by adding up the measured values for each section. Furthermore, such measurement work requires only one worker to be placed in the machine room, and there is no danger during the work.

〔Effect of the invention〕

As explained above, according to the present invention, for the lower part of the rope in the machine room, it is only necessary to lower the slider to which the measuring tape is attached along the rope. Can accurately measure rope length.

[Brief explanation of drawings]

Figures 1 and 2 are for explaining one embodiment of the present invention; Figure 1 is a schematic diagram showing how the rope length is measured in the section from the machine room floor to the car; The figure is an enlarged view of the part A surrounded by the broken line in FIG. 1. 1... Machine room floor, 2... Sheave, 3... Beam pulley, 4... Rope, 5... Basket, 6... Counterweight, 8... Slider, 9... Length measuring tape.

Claims (1)

[Claims] 1. In an elevator rope length measuring device in which a car and a counterweight are suspended in a hanging manner via a rope supported by a sheave and a beam pulley,
A length measuring device for an elevator rope, comprising: a slider that can freely hang down from the floor of a machine room along the rope; and a measuring tape whose tip end is fixed to the slider.