JP5028867B2 - Loop bending compensation device for elevator control cable - Google Patents

Description

  The present invention relates to a loop bending compensation device for an elevator control cable.

Conventionally, in an elevator, a control cable 5 that connects a car 1 and a hoistway suspension 7 provided on the hoistway wall 6 is hung in the hoistway as shown in FIG. This control cable 5 is suspended so as to draw a U-shaped loop or the like, and the U-shaped loop portion is bent at a loop bending radius 5a. The value of the loop bending radius 5a is determined by the type and amount of vinyl coating used for the control cable 5, the number of wire cores, and the like. Normally, as shown in FIG. 4, the control cable 5 draws a U-shaped loop, and the control cable 5 on the car 1 side and the hoistway wall 6 side is substantially parallel. However, the loop bend radius 5a of the control cable 5 changes in the hoistway due to the temperature difference of the season. In particular, when the vinyl used for covering the control cable 5 is softened due to a temperature rise, the loop bending radius 5b is reduced as shown in FIG. For this reason, the suspended state of the control cable 5 is close to a V shape. As a result, the dimension between the control cable 5 and the car 1 is reduced, so that when the car 1 comes near the lowermost floor, the control cable 5 comes into contact with the end of the car floor and the control cable 5 is damaged. There was a problem that the sound when it interfered was transmitted to the car.
As a prior art for solving such a problem, a flexible strip such as a steel stranded wire or a steel tape is arranged along the length of the moving cable, and this flexible strip is attached to the moving cable with a fixture. (For example, refer to Patent Document 1).

Japanese Patent Laid-Open No. 7-117948

  In the prior art as described above, there is a problem that an excessive force is applied when the moving cable or the flexible strip is bent or stretched, and the moving cable may be damaged.

  The present invention has been made to solve the above-described problems. The loop bending compensation of an elevator control cable that can compensate the loop bending diameter of the control cable with an inexpensive device at a time when the temperature rises greatly such as in summer. A device is provided.

The loop bending compensation device for an elevator control cable according to the present invention is attached in close contact with the flat control cable that connects the elevator car and the hoistway suspension, and the inner side of the flat control cable along the longitudinal direction thereof. A plurality of mounting members for mounting a flat belt-shaped loop bend compensation means and a loop bend compensation means attached to and fixed to the flat control cable at an appropriate interval, and slidably fitted to the inside of the flat control cable. It is equipped with.

Further, the mounting member is made of a guide ring, and a vertical cut is provided on the inner wall of the mounting member. The loop bending compensation means is accommodated and held inside by using this cut, and a loose fit is achieved. It is what.

  According to the present invention, the loop bending diameter of the control cable can be compensated by an inexpensive device at a time when the temperature rises sharply such as in summer, and an unreasonable force is exerted when the control cable and the loop bending compensation means are bent and expanded. Therefore, there is an effect that the control cable and the loop bending compensation means are not damaged.

Embodiment 1.
FIG. 1 is a side view showing a loop bending compensation device for an elevator control cable according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged view showing a configuration of a main part of the loop bending compensation device for an elevator control cable according to Embodiment 1 of the present invention. FIG. 3 is a cross-sectional view showing the configuration of the main part of the loop bending compensator for an elevator control cable according to Embodiment 1 of the present invention.

  In the figure, 1 is an elevator car, 2 is a main rope, 5 is an elevator control cable connecting the car 1 and a hoistway suspension 7 provided on the hoistway wall 6. This control cable 5 is suspended so as to draw a U-shaped loop or the like, and the U-shaped loop portion is bent at a loop bending radius 5a. The value of the loop bending radius 5a is determined by the type and amount of vinyl coating used for the control cable 5, the number of wire cores, etc., and is used for covering the control cable 5 in the summer when the temperature rises rapidly. Since the vinyl being softened, the loop bending radius 5a tends to be small in a normal state and tends to be close to a V shape. Reference numeral 8 denotes a belt-like loop bending compensation means attached in close contact with each other so as to be held inside along the longitudinal direction of the control cable 5. Since the loop bending compensation means 8 is made of a material that is light and flexible and exhibits an appropriate resistance to bending, the covering of the control cable 5 is possible even during the summer when the temperature rises rapidly. Even if the vinyl is softened and the loop bend radius 5a is decreased, the original loop bend radius can be compensated. Reference numeral 9 denotes an attachment member made up of a plurality of guide rings for attaching the control cable 5 and the loop bending compensation means 8 to each other, and a resin or metal surface is molded with resin. The attachment members 9 are respectively attached and fixed to the control cable 5 at appropriate intervals, and the loop bending compensation means 8 entrapped inside the control cable 5 is attached in a slidable loosely fitted state. In addition, a cut 10 made of a longitudinal slit or the like is made in the inner wall of the mounting member 9. The loop bend compensation means 8 is housed and held inside the mounting member 9 by using this cut line 10 and is loosely fitted, so that the loop bend compensation means 8 is slidable with respect to the control cable 5. It is.

Now, when the car 1 is raised and lowered, the control cable 5 and the loop bending compensation means 8 are also raised and lowered in accordance with it. Since the loop bending compensation means 8 is made of a material that is light and flexible and exhibits an appropriate resistance to bending, the vinyl covered with the control cable 5 can be used even when the temperature rises in summer. Even if the loop bend radius 5a is decreased due to softening, the compensation is made so as to keep the original loop bend radius. Further, when the control cable 5 and the loop bending compensation means 8 are bent and expanded / contracted, the loop bending compensation means 8 is housed and held inside the mounting member 9 so that the loop bending compensation means 8 is loosely fitted. Since it is slidable with respect to the cable 5, no excessive force is applied, and the control cable 5 and the loop bending compensation means 8 are not damaged. Further, since the loop bending compensation means 8 is a light material, the balance of the elevator is not lost, and it does not become a power load of the elevator.
In the first embodiment, since the loop bending compensation means 8 is attached so as to be tangled inside the control cable 5 along the longitudinal direction, the control cable greatly shakes due to an earthquake or the like and contacts the car 1. Even if this occurs, since the loop bending compensation means 8 functions as a buffer material, the control cable can be prevented from being damaged.

It is a side view which shows the loop bending compensation apparatus of the elevator control cable in Embodiment 1 of this invention. It is an expansion perspective view which shows the principal part structure of the loop bending compensation apparatus of the elevator control cable in Embodiment 1 of this invention. It is sectional drawing which shows the principal part structure of the loop bending compensation apparatus of the elevator control cable in Embodiment 1 of this invention. It is a side view which shows the holding device of the conventional elevator control cable. It is a side view for demonstrating the subject of the holding | maintenance apparatus of the conventional elevator control cable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 2 Main rope 5 Control cable 5a Loop bending radius 5b at normal time Loop bending radius 6 at the time of temperature rise Hoistway wall 7 Hoistway lifting hand 8 Loop bending compensation means 9 Mounting member (guide ring)
10 Cut (slit)

Claims (3)

A flat control cable connecting the elevator car and the hoistway suspension ;
A flat belt-shaped loop bending compensation means attached in close contact with each other along the longitudinal direction of the flat control cable;
A plurality of mounting members that are fixedly attached to the flat control cable at appropriate intervals and that are slidably fitted to the loop bending compensation means that are entangled inside the flat control cable ; and
A loop bending compensation apparatus for an elevator control cable, comprising: The mounting member is made of a guide ring, and a vertical cut is provided on the inner wall of the mounting member. The loop bending compensation means is accommodated and held inside by using this cut, and the fitting is loosely fitted. The loop bending compensation apparatus for an elevator control cable according to claim 1. The loop bending compensation device for an elevator control cable according to claim 1 or 2 , wherein the mounting member has a resin or metal surface molded with resin.

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