JPH05178564A - Vibration control device for elevator control cable - Google Patents

Abstract

PURPOSE:To prevent oscillation of a cable for control owing to elevation of a cage, earthquake, and wind and to eliminate a fear of the cable being entangled with a device in an elevation passage, in an elevator for a superhigh building. CONSTITUTION:Oscillation of a cable 3 for controlling an elevator is prevented from occurring by means of a damping pulley 7 and a guide machine 9, a down force is exerted on a damping pulley 7 by means of a balancing pulley 8 coupled to the damping pulley 7, and smooth vertical movement of the guide machine 9 is effected. Smooth vertical movement of the guide machine prevents oscillation of the cable for control. This constitution prevents the cable from being entangled with a device built in an elevation passage and reduces oscillation of a cage owing to oscillation of the cable 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control cable, and more particularly to a control device for preventing the elevator control cable from swaying due to elevator car ups and downs and earthquakes.

[0002]

2. Description of the Related Art In an elevator, cables such as control signal lines and electric power lines are provided between an elevator car that moves up and down in a hoistway and a control panel in a machine room by an elevator control cable. The elevator control cable has both ends supported by the car side and the control panel side in the hoistway, and hangs down by its own weight. For this reason, the car easily swings due to the lifting and lowering of the car, an earthquake, wind, or the like, and is likely to collide with the walls of the hoistway. In addition, this phenomenon becomes even greater in skyscrapers.

In order to solve the above problems, there is JP-A-3-13478 as a known example closest to the present invention. This is a cable duct installed in the vertical direction of the hoistway wall, and is suspended between the car wall and the hanging lower end of the control cable by a rope that connects the hoistway wall and the car. It is intended to prevent the control cable from swaying by restraining the control cable and guiding the control cable to the car side and the hoistway wall side.

[0004]

As described above, in the prior art, the downward movement of the guide device for allocating the control cable to the car lower part and the hoistway part part is performed only by gravity. There is. Therefore, if the guide rollers of the guide machine do not move downward for some reason, such as when the guide rollers slip, the control cable is caught in the guide machine when the car is descending, and slack or disconnection occurs. I was afraid.

An object of the present invention is to provide an elevator control cable equipped with means for preventing the guide machine from being caught and preventing the control cable from swaying even when the guide roller is not slippery enough due to the downward pulling force. To provide a vibration damping device.

[0006]

In order to achieve the above object, a balancing pulley is integrated with a damping pulley installed in a drooping bent portion of a control cable. This balancing pulley is connected to the car by a wire from a counterweight connected via a motor in the machine room via a balance wheel installed at the bottom of the hoistway, and is connected to the upper part of the counterweight. The motion exerted a downward force on the balancing pulley.

[0007]

In the vibration control device for the elevator control cable according to the present invention, the control cable restrains the horizontal movement by the vibration control pulley that runs along the guide rails installed in the vertical direction in the hoistway, and By applying a downward force to the vibration control pulley, the guide roller in contact with the guide rail is prevented from being caught, so that the control cable can be reliably prevented from swinging or slackening.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be explained. FIG. 1 is a side view showing an example of the overall configuration of an elevator having a vibration damping device for an elevator control cable according to an embodiment of the present invention.

In FIG. 1, 4 is a hoist driven by an electric motor, 5 is a deflector wheel for moving the lifting position of the counterweight 6 away from the lifting position of the car 1, and 10 is a balance located at the bottom of the hoistway 12. Vehicles 2 are main ropes that connect the car 1 and the counterweight 6 via the hoisting machine 4, 11 is a counterweight that connects the counterweight 6 and the hoistway lowermost portion 12a through the countercar 10 and the counterbalance pulley 8. A balancing rope, 3 is a control cable for transmitting signals and supplying electric power between the car 1 and the control panel in the machine room via a pulley 7, and 9 is a vibration damping pulley 7 and a balancing pulley 8 on a pulley guide rail 13. It is a guide that runs along. Here, the vibration control pulley 7 moves up and down at half the speed of the operation of the car 1 by the control cable 3 connected between the car 1 and the control panel. In addition, the balancing pulley 8 connected to the vibration control pulley 7 also includes the car 1
The balance weight 6 connected via the hoisting machine 4 and the balance rope 11 connected to the lowermost portion 12a of the hoistway via the balance wheel 10 move up and down at half the speed of the operation of the balance weight 6. Therefore, when the car 1 rises, the balancing pulley 8 is pulled upward by the damping pulley 7, and when the car 1 descends, the balancing pulley 8 exerts a downward force by the balancing pulley 8. ..

FIG. 2 is a detailed view of the guide machine including the damping pulley 7 and the balancing pulley 8. In FIG. 2, 9a is a connecting fitting for connecting the damping pulley 7 and the balancing pulley 8,
Reference numeral b denotes a guide roller which is installed in the guide machine 9 and which is in contact with a pulley guide rail 13 which is installed in the vertical direction on the hoistway wall side 12a. Here, the damping pulley 7 is operated by the operation of the control cable 3, and the balancing pulley 8 is driven by the balancing rope 1.
It has a structure that rotates by 1. The damping pulley 7 has the same diameter as the hanging bending diameter of the control cable 3 so that only the vertically downward force is applied to the car 1 side and the control panel side. For this reason, since no extra horizontal force is applied to the car 1, vibration of the car 1 during lifting can also be suppressed.

FIG. 3 is a sectional view of the damping pulley 7. Figure 3
In FIG. 3, the control cable 3 is housed in the groove of the vibration damping pulley 7. Therefore, phenomena such as entanglement and rubbing between control cables, which are often seen when there are a plurality of control cables 3, can be suppressed. Further, the friction between the vibration damping pulley 7 and the control cable 3 can be reduced by individually rotating the guide roller 7a and the guide 7b in the vibration damping pulley 7.

In this embodiment, the guide machine 9 is described as traveling along the guide rail 13. However, the guide rail 13 may be a wire rope, and the guide machine 9 may have only a hole through which the wire rope passes. It is possible.

[0013]

The vibration damping device for the elevator control cable according to the present invention is a vibration damping device in which the control cable is fixed by a guide machine that moves up and down along a pulley guide rail and a vibration damping pulley connected thereto. Since the balancing pulley is connected to the pulley, even if the guide roller of the guide machine slips badly, it can be moved downward, and the deflection of the control cable can be effectively suppressed, and the control cable can be It is possible to prevent entanglement with devices and the like in the hoistway, prevent disconnection accidents of the control cable, and consequently improve its safety.

[Brief description of drawings]

FIG. 1 is a side view of an elevator provided with a vibration damping device for an elevator control cable according to an embodiment of the present invention.

FIG. 2 is a side view of a vibration damping device for an elevator control cable according to the present invention.

FIG. 3 is a sectional view of a vibration damping device for an elevator control cable according to the present invention.

[Explanation of symbols]

3 ... Control cable, 4 ... Hoisting machine, 7 ... Damping pulley, 8
… Balanced pulley, 9… Guide, 11… Balanced rope, 13… Pulley guide rail.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Tsutomu Yoshioka 1070 Imo, Katsuta, Ibaraki Prefecture Mito Plant, Hitachi, Ltd. (72) Toshio Meguro 1070 Ige, Katsuta, Ibaraki Hitachi, Ltd. Mito, Hitachi Inside the factory (72) Inventor Tomoji Onishi 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Inside Hitachi Building System Service Co., Ltd.

Claims (5)

[Claims] 1. An elevator control cable suspended between a car of the elevator and a control panel in a machine room in an elevator hoistway while rotating in accordance with a lifting operation of the elevator control cable. A damping pulley installed in the hanging bend of the elevator control cable that operates in the up-and-down direction, and a balancing pulley that is connected to the damping pulley and pulls the damping pulley downward when the car descends; A vibration damping device for an elevator control cable, comprising: a balance weight of a car; and a wire that connects the balance pulley via a balance wheel installed at the bottom of the hoistway. 2. A vibration damping pulley installed in a hanging bent portion of an elevator control cable, and a balance pulley for pulling the vibration damping pulley downward connected to the vibration damping pulley are installed in a vertical direction of a hoistway wall. A vibration damping device for elevator control cables that is connected to a guide machine that runs along a guide rail. 3. The guides on both side surfaces of a balancing pulley for pulling down the vibration damping pulley connected to the vibration damping pulley installed at the hanging bend of the elevator control cable, and between the both side surfaces. The damping device for the elevator control cable, in which the guide roller parts of are rotated separately. 4. The vibration control device for an elevator control cable according to claim 1, wherein the diameter of the vibration control pulley is the same as the bending diameter of the elevator control cable. 5. The vibration damping device for an elevator control cable according to claim 2, wherein the guide rails installed in the vertical direction of the hoistway wall are wire ropes, and the guide machine is provided with holes through which the wire ropes pass.