JPH072461A - Elevator device - Google Patents

Abstract

PURPOSE:To improve the riding comfortableness by providing a vibration absorber for absorbing horizontal vibration energy of a weight compensating rope in a clearance between a balance weight and the weight compensating rope, so as to prevent the horizontal vibration of the rope and abnormal vibration produced in a car. CONSTITUTION:A plurality of main ropes 3 are wound to a hoist, to fit a car to one end of the rope 3 and a balance weight 2 to the other end respectively, and the car is lifted in a well bucket manner. The balance weight 2 is constituted by piling together subweights 17 in a framework 16, to provide a supporting base 18 for connecting a plurality of weight compensating ropes 6 in a side surface 5. These ropes 6 are arranged in a single line and connected to the supporting base 18 through a spring 9. In the device thus obtained, a vibration absorber 13 comprising a plate-shaped elastic unit 14 and a supporting material 15 is interposed in a clearance between the balance weight 2 and the weight compensating rope 6, to absorb the horizontal vibration energy of the weight compensating rope 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus for hoisting a rope having a car at one end and a counterweight at the other end by a hoist, and raising and lowering the car and the counterweight, and in particular, a long stroke elevator. Regarding the device.

[0002]

2. Description of the Related Art The prior art will be described with reference to Japanese Patent No. 992955.

As shown in FIG. 3, a long-stroke elevator installed in a high-rise building has a plurality of ropes 3 for main ropes suspending a car 1 and a counterweight 2, and one end of which is a car lower part 4, A plurality of ropes 6 for weight compensation are connected to the side surface 5 of the counterweight at the other end, and are vertically guided by the hoisting machine 10.

Since high-rise buildings have a flexible structure due to their seismic design, they tend to shake sideways against earthquakes or strong winds.
For this reason, in the long-stroke elevator installed in a high-rise building, when the ropes 3 and 6 are vibrated by the lateral shake of the building,
Since the ropes resonate and a large lateral vibration amplitude occurs, and because the physical constants of the springs 7, 8 and 9 that connect the car 1 and the counterweight 2 to the ropes 3 and 6 are not uniform, the lateral vibration phase of each rope And the cycle is not uniform. Such lateral vibration of the rope lasts for a long time once it laterally shakes because the internal damping of the rope is small. When the car 1 and the counterweight 2 travel in this lateral swinging state, the ropes 3 and 6 are moved to the hoisting machine 1.
There is a risk of deviation from 0 or the groove of the deflecting wheels 11 and 12, and even if it does not deviate, abnormal vibration is generated in the car 1 and the passengers feel uneasy. Such danger and anxiety increase as the elevator speed increases and decreases.

Conventionally, Japanese Patent No. 992955 has been proposed to prevent such lateral runout of a rope. This discloses a structure in which an elastic body is provided near the rope connecting portion of the car and near the rope connecting portion of the counterweight.

In the above-mentioned prior art, when the car 1 and the counterweight 2 are stopped at the uppermost floor or the lowermost floor, the top margin or pit depth required for safety becomes longer as the high-speed elevator is, so vibration absorption is performed. The installation of the device is not affected by the top allowance or the pit depth, but the top allowance or the pit depth of the low-speed elevator becomes shorter, so the length of the vibration absorber must be shortened, and the length of the vibration absorber is shorter. If so, the effect of absorbing the vibration energy held over the entire length of the rope is not sufficient. In addition, the weight compensating ropes 6 connected to the car lower portion 4 and the counterweight side surface 5 are usually arranged in a single row, and the vibration damping device is fixed to the ropes. , Since it swings in the same phase as the lateral vibration of the rope, the effect of absorbing lateral vibration energy of the rope is not sufficient.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to sufficiently absorb lateral vibration energy of a rope for weight compensation even in a low speed elevator to prevent lateral vibration of the rope and prevent abnormal vibration generated in a car. , To provide a comfortable elevator.

[0008]

In order to achieve the above object, the present invention comprises a plate-like elastic body and a support member in a gap between a counterweight and a weight compensating rope connected to a side surface of the counterweight. A vibration damping device is provided so as to be in contact with and engaged with the rope to absorb lateral vibration energy of the rope for weight compensation and prevent lateral vibration of the rope.

[0009]

[Function] When the rope for weight compensation causes lateral vibration, the plate-like elastic body of the vibration absorbing device provided in the gap between the counterweight and the rope for weight compensation absorbs lateral vibration energy of the rope for weight compensation. It is possible to prevent the lateral shake of the rope.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view showing a state where a vibration damping device according to an embodiment of the present invention is arranged in a gap between a counterweight and a rope for weight compensation, and FIG. 2 is a side view of FIG. The balance weight 2 has sub-weights 17 stacked in a frame 16, and a supporting base 18 for connecting a weight compensating rope 6 is provided on a side surface 5. The weight compensating rope 6 is connected to the supporting base 18 via a spring 9. In addition, the weight compensating ropes 6 are arranged in a single row with a gap provided between the rope 6 and the subweight 17.
The counterweight 2 is connected to the rope 3 for the main rope on the upper part of the frame 16 via the spring 8, and is guided in the vertical direction by the guide 19 and the guide rail 20. The vibration absorbing device 13 is composed of a plate-shaped elastic body 14 and a supporting member 15, and is configured to contact and engage with the weight compensating rope 6 in a gap between the weight compensating rope 6 and the subweight 17 of the counterweight 2. Arranged, the support 15 is fixed to the counterweight 2. The vibration damping device 13 may be fixed to a specific one of the ropes 6 for weight compensation.

According to this embodiment, since the vibration absorbing device 13 is restrained by the counterweight 2, when the weight compensating rope 6 causes lateral deflection, the plate-like elastic body 14 causes the lateral side of the weight compensating rope 6 to move. Since the vibration energy can be absorbed and the lateral shake of the rope can be prevented, it is possible to prevent the occurrence of abnormal vibration occurring in the car.

[0012]

According to the present invention, the vibration damping device composed of the plate-like elastic body and the supporting member is brought into contact with the rope in the gap between the counterweight and the weight compensating rope connected to the side surface of the counterweight. By providing so as to engage, the lateral vibration energy of the rope for weight compensation can be absorbed and the lateral vibration of the rope can be prevented.Therefore, abnormal vibration that occurs in the car does not occur, and an elevator device with a comfortable ride can be provided. Can be provided.

[Brief description of drawings]

FIG. 1 is a front view showing a state where a vibration damping device according to an embodiment of the present invention is arranged on a rope portion for weight compensation of a counterweight.

FIG. 2 is a side view of FIG.

FIG. 3 is a cross-sectional view of a hoistway of an elevator apparatus that is the subject of the present invention.

[Explanation of symbols]

1 ... Car, 2 ... Counterweight, 3 ... Main rope, 5
... Sides of counterweight, 6 ... Rope for weight compensation, 10 ... Hoisting machine, 13 ... Vibration absorbing device, 14 ... Elastic body, 15 ... Support material.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masanobu Ito 1070 Ige, Katsuta-shi, Ibaraki Hitachi Co., Ltd. Mito Plant (72) Inventor Masamitsu Yamaki 6-chome Kandanishikicho, Chiyoda-ku, Tokyo Hitachi Co., Ltd. In the building system service

Claims (1)

[Claims] 1. A hoisting machine installed in a machine room, a plurality of ropes for a main rope wound around the hoisting machine, and a rope for hanging the main rope for the main ropes. Of a car and a counterweight that are elevated and lowered through the ropes, one end of the car is a lower part of the car, and the other end is a plurality of weight-compensating ropes connected to the side surfaces of the counterweight. An elevator apparatus comprising a vibration absorbing device for absorbing lateral vibration energy of a weight compensating rope, which is provided in a gap between the compensating rope and the compensating rope.