JP2004224475A - Balance cable swing prevention device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive balance cable swing prevention device capable of reducing costs with a simple structure and capable of reducing an installation space. <P>SOLUTION: A balance cable 7 for compensating change of balance on a balance weight side and a car side is connected between a balance weight and a car. The balance cable 7 is suspended in a shaft. A swing prevention device 8 is attached to a bracket 9 for mounting in the shaft to suppress swing of the balance cable 7. The swing prevention device 8 has a cable surrounding part 11 like a coil spring. The cable surrounding part 11 is arranged in such a way that the balance cable 7 passes an inner side. Swing of the balance cable 7 is suppressed by elastic deformation of the cable surrounding part 11. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balancing cable anti-swing device for an elevator which suppresses the swinging of a balancing cable for compensating a balancing balance on a car side and a balancing weight side.
[0002]
[Prior art]
Usually, a balancing cable is connected between the lower part of the car and the lower part of the counterweight in the hoistway in order to compensate for a change in the balance between the car and the counterweight. This balancing cable is suspended in the hoistway. Further, a balancing cable anti-sway device is provided in the hoistway to suppress the swing of the balancing cable.
[0003]
The conventional balancing cable rocking device has four rollers arranged so as to surround the balancing cable. The swing of the balancing cable is suppressed by being limited to a range surrounded by these rollers (for example, see Non-Patent Document 1).
[0004]
[Non-patent document 1]
Draka Elevator product, Whisper-Flex damping device, 3.5 pages, Draca USA (Draka USA), [Search October 31, 2002], Internet <URL: http: /// www. draka-ep. com / >>
[0005]
[Problems to be solved by the invention]
However, in the conventional balancing cable anti-swing device, since four rollers are arranged around the balancing cable in order to suppress the swinging of the balancing cable, the number of parts is large, the structure is complicated and expensive, and Large installation space must be secured.
Further, if the rollers are to be elastically displaced in order to absorb the swing of the balancing cable, it is necessary to support the four rollers with a spring or a vibration-proof rubber, and the structure becomes complicated and expensive.
[0006]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-described problems, and has a simple structure, can be inexpensive, and can reduce an installation space, and a balancing cable anti-swing device for an elevator. The purpose is to obtain.
[0007]
[Means for Solving the Problems]
An elevator balancing cable anti-swing device according to the present invention is an elevator balancing cable anti-sway device connected between a car and a counterweight for suppressing the swing of a counterstrain cable suspended in a hoistway. And a coil spring-like cable surrounding portion disposed in the hoistway to surround the balancing cable.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention.
In the figure, a hoist 2 is installed above a hoistway 1. A deflector wheel 3 is installed near the hoisting machine 2. A main rope 4 is wound around the sheave 2 a and the deflecting wheel 3 of the hoisting machine 2. The counterweight 5 and the car 6 are connected to the main rope 4 and are suspended in the hoistway 1. The counterweight 5 and the car 6 are moved up and down in the hoistway 1 by driving the hoisting machine 2.
[0009]
A balancing cable 7 for compensating for the balance between the balancing weight 5 and the car 6 is connected between the balancing weight 5 and the car 6. One end 7 a of the balancing cable 7 is connected to a lower portion of the balancing weight 5, and the other end 7 b of the balancing cable 7 is connected to a lower portion of the car 6. The balancing cable 7 is bent in a U shape from the balancing weight 5 side to the car 6 side, and is suspended in the hoistway 1.
[0010]
In the hoistway 1, there is provided a balancing cable anti-swing device 8 (hereinafter simply referred to as “sway preventing device”) for suppressing the swaying of the balancing cable 7 due to the raising and lowering of the counterweight 5 and the car 6. I have. The anti-sway device 8 is mounted on a mounting bracket 9 fixed to the wall surface of the hoistway 1. In addition, the anti-swing device 8 is attached to the counterweight 5 side and the car 6 side one by one.
[0011]
FIG. 2 is a side view showing the anti-swing device 8 of FIG. 1, and FIG. 3 is a bottom view showing the anti-swing device 8 of FIG. In the figure, the anti-swing device 8 includes a cable surrounding portion 11 formed by winding a metal wire member (elastic linear member) having a predetermined elasticity into a coil spring shape (spiral shape). And a plate-shaped mounting portion 12 formed on the upper end portion 11a.
[0012]
The cable surrounding portion 11 is arranged so that the balancing cable 7 passes through the inside.
That is, the balancing cable 7 is surrounded by the cable surrounding portion 11. A lower end 11b of the cable surrounding portion 11 is a free end. The mounting portion 12 is fixed to the mounting bracket 9 by bolts.
[0013]
The winding pitch of the metal wire member of the cable surrounding portion 11 is larger than the diameter of the balancing cable 7. That is, the balancing cable 7 can pass between adjacent metal wire members of the cable surrounding portion 11.
[0014]
Next, the operation will be described.
The swing of the balancing cable 7 is caused by the lifting and lowering of the balancing weight 5 and the car 6. If the swing of the balancing cable 7 is to be larger than the range surrounded by the cable surrounding portion 11, the balancing cable 7 contacts the cable surrounding portion 11, and the cable surrounding portion 11 is elastically deformed. Due to this elastic deformation, the swing of the balancing cable 7 is absorbed and reduced. In other words, the pressing force due to the swing of the balancing cable 7 is elastically absorbed by the cable surrounding portion 11, so that the swing of the balancing cable 7 is reduced.
[0015]
Since the anti-swing device 8 configured as described above has the coil spring-like cable enclosing portion 11 surrounding the balancing cable 7, the anti-sway of the balancing cable 7 is suppressed with a cheap and simple configuration. be able to. Moreover, the whole anti-swing device 8 can be reduced in size, and the installation space for the anti-sway device 8 can be reduced.
[0016]
Also, since only the upper end 11a of the cable enclosure 11 is fixed to the mounting bracket 9 and the lower end 11b is a free end, the degree of freedom of elastic deformation of the cable enclosure 11 increases, and the balancing cable 7 Impact on the balancing cable 7 when suppressing the swing of the motor can be reduced. Furthermore, since the free end of the cable surrounding portion 11 can be arranged on the side of the balance cable 7 where the swing is large, the impact on the balance cable 7 when suppressing the swing of the balance cable 7 can be further reduced. Can be.
[0017]
Further, since the winding pitch of the cable surrounding portion 11 is larger than the diameter of the balancing cable 7, the cable surrounding portion 11 is rotated while rotating the cable surrounding portion 11 from the upper end 11 a side or the lower end portion 11 b side. By passing the cable 7 between the metal wire members, the balancing cable 7 can be arranged inside the cable surrounding portion 11.
Therefore, the anti-swing device 8 can be easily installed on the existing balancing cable 7 without removing the balancing cable 7.
[0018]
In the above example, the attachment portion 12 is formed at the upper end portion 11a of the cable surrounding portion 11, but may be formed at the lower end portion 11b. Even in this case, the swing of the balancing cable 7 can be elastically absorbed, and the increase in the swing of the balancing cable 7 can be suppressed.
[0019]
Embodiment 2 FIG.
FIG. 4 is a side view showing an anti-sway device according to Embodiment 2 of the present invention, and FIG. 5 is a bottom view showing the anti-sway device of FIG. In the figure, a plate-shaped mounting portion 12 is formed at each of an upper end portion 11a and a lower end portion 11b of the cable surrounding portion 11. Each mounting portion 12 is fixed to the mounting bracket 9 by a bolt. Other configurations are the same as in the first embodiment.
[0020]
Since the upper end portion 11a and the lower end portion 11b of the cable surrounding portion 11 are fixed to the mounting bracket 9, the fatigue due to the deformation of the cable surrounding portion 11 is small, and the life of the anti-swing device is prolonged. Can be.
[0021]
Embodiment 3 FIG.
FIG. 6 is a side view showing an anti-swing device according to Embodiment 3 of the present invention. In the figure, the winding diameter of the metal wire member of the cable surrounding portion 31 gradually increases from the upper portion to the lower portion. That is, the shape of the cable surrounding portion 31 is a trumpet shape gradually expanding downward. Other configurations are the same as in the first embodiment.
[0022]
In the anti-sway device having such a configuration, since the diameter of the cable surrounding portion 31 increases downward, the cable surrounding portion 31 can be fixed with respect to the balancing cable 7 even when the balancing cable 7 is inclined. Can be stably arranged while maintaining the spacing of. Therefore, the cable surrounding portion 31 is arranged at a sloped portion bent in a U-shape below the position of the cable surrounding portion 11 of the first and second embodiments, that is, a portion where the swing of the balancing cable 7 tends to be large. And the swing of the balancing cable 7 can be further suppressed.
[0023]
In the third embodiment, the lower end of the cable surrounding portion 31 is a free end. However, similarly to the second embodiment, the upper end and the lower end are formed with a mounting portion, and the mounting bracket 9 is formed. It may be fixed.
[0024]
Further, in each of the above embodiments, the cable enclosing portion is constituted only by the metal wire member. For example, it may be covered with a cushioning or lubricating protective member such as rubber or resin. In this case, for example, the metal wire member is inserted into the tubular protection member.
[0025]
Further, in order to prevent wear of the balancing cable 7 and the cable surrounding part due to contact with each other, a cylindrical protection member surrounding the balancing cable 7 may be arranged inside the cable surrounding part.
[0026]
Further, the balancing cable 7 includes a rope, a chain, and a cable in which a chain and a soft material such as resin are integrated by molding.
[0027]
【The invention's effect】
As is apparent from the above description, the balancing cable anti-swing device for the elevator according to the present invention includes the coil spring-like cable surrounding portion disposed in the hoistway so as to surround the balancing cable. The swinging of the balancing cable can be suppressed with an inexpensive and simple configuration. Further, the whole anti-sway device can be reduced in size, and the installation space for the anti-sway device can be reduced.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention.
FIG. 2 is a side view showing the anti-swing device of FIG. 1;
FIG. 3 is a bottom view showing the anti-swing device of FIG. 2;
FIG. 4 is a side view showing an anti-sway device according to a second embodiment of the present invention.
FIG. 5 is a bottom view showing the anti-swing device of FIG. 4;
FIG. 6 is a side view showing an anti-swing device according to a third embodiment of the present invention.
[Explanation of symbols]
1 hoistway, 5 counterweight, 6 car, 7 balancing cable, 8 anti-swing device, 11 cable enclosure, 11a upper end, 11b lower end.

Claims (4)

A balancing cable anti-swing device for an elevator, which is connected between a car and a balancing weight and suppresses a swing of a balancing cable suspended in a hoistway,
An equilibrium cable anti-swing device for an elevator, comprising a coil spring-like cable surrounding portion disposed in the hoistway so as to surround the balancing cable. 2. The device according to claim 1, wherein at least one of an upper end and a lower end of the cable surrounding portion is fixed in the hoistway. 3. 3. The device according to claim 1, wherein the diameter of the cable surrounding portion increases downward. 4. The protection member for preventing abrasion of the cable surrounding part and the balancing cable is provided at least between the cable surrounding part and the balancing cable. 3. The device according to any one of claims 1 to 3, wherein:

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