JPH02127384A - Vibration damping device for elevator - Google Patents

Abstract

PURPOSE:To suppress the vertical vibration and the horizontal vibration of a cage room and improve the comfortableness to ride by providing a vibration damping device with large vibration damping performance filled with a sticky high-viscosity fluid into a rubber container provided with a hollow hole between a cage room floor and a lower frame. CONSTITUTION:A sticky high-viscosity fluid 22 is filled into the hole section 21 of the rubber container 20 of a vibration damping device 19, a vibrator 24 is fixed to a seat 24 blocking the hole section 21, and its end section is arranged in the high-viscosity fluid 22. When the vibration damping device 19 is vibrated by the vertical vibration transmitted from an main rope to the lower frame 8 of a cage, the vibration of the rubber container 20 is damped. The vertical vibration generated on a cage room floor 10 can be suppressed. When the vibration damping device 19 is vibrated by the horizontal vibration transmitted from a rail to the lower frame 8 and the rubber container 20 is horizontally vibrated, a viscosity shearing resistance force is generated on the high-viscosity fluid 22, a horizontal damping force is applied to the rubber container 20, and vibration is damped. The resonance magnifying factor of the horizontal vibration generated on the cage room floor 10 is made small.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vibration damping device, and particularly to a vibration damping device that suppresses vertical vibrations and horizontal vibrations that occur in a car when an elevator is running, thereby improving riding comfort. The present invention relates to an elevator vibration damping device that can be improved.

[Conventional technology]

The seating of a general rope elevator will be explained with reference to FIG. The passenger car 4 is composed of a framework 5 and a passenger compartment 9,
The seat 4 is suspended by a rod 2 connected to the end of the main rope 1 via a spring 3, and is guided upward and downward by a guide section 15 and a rail 16 provided on a framework 5. The rail 16 may have a step at the joint part 17 or a bend in the rail fixing part 18. A car room 9 is installed on the frame 5 via a plurality of vibration isolators 11, and the car room floor 10 is connected to the frame 5.
The vibrations transmitted to the ground are insulated by the vibration isolator 11. Vibration isolator 11
uses a vibration isolator with mounting fittings 13 and 14 above and below the rubber 12, as shown in FIG. The spring constant of the vibration isolator 11 is selected not so much for vibration prevention as for the amount of compressive deflection that does not cause problems when passengers get on and off or for load detection, so the vibration prevention effect is insufficient. Therefore, the rotational pulsation of the hoisting machine 5 and the vibration caused by the tricripple of the speed control system become an excitation source, which is transmitted to the passenger car 4 via the main rope 1, which changes the spring constant of the vibration isolator 11 and the weight of the car room 9. When the natural frequency of vibration and the excitation frequency transmitted from the main rope 1 match, the car room 9 resonates and the vertical and vertical vibrations increase.

In addition, the first and fourth guide parts 15 are connected to the joint part 17 of the rail 16.
When passing through the rail fixing section 18, the guide section 15 is vibrated, and horizontal vibrations are generated in the car compartment 9.

There is a problem of causing discomfort to passengers inside the car.

For this reason, conventionally, a structure is provided in which a cylinder filled with viscous fluid is provided between the car floor and the lower frame, as described in Japanese Unexamined Patent Publication No. 53-11445. Also, JP-A-50-2495
As described in Publication No. 3, a structure in which a viscous damper such as a dashpot is provided in parallel with a spring provided on a rod connected to the end of a rope, and as described in Japanese Utility Model Application Publication No. 60-183779, A vibration damping device that integrates a spring and a vibration damper is installed to prevent vertical and vertical vibrations from being transmitted from the rope to the heel.

[Problem to be solved by the invention]

However, since the above-mentioned conventional technology has a structure in which a piston is provided by filling a cylinder with viscous fluid, no consideration is given to preventing vibrations in the horizontal direction. There is a problem in preventing horizontal vibration.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vibration damping device for an elevator that can sufficiently prevent vertical vibrations and horizontal vibrations in a first-row car, and that can be constructed simply and inexpensively.

[Means to solve the problem]

The above purpose is to inject a highly viscous fluid into a rubber container with a hollow hole, and install a vibration damping device with high vibration damping performance between the first car room floor and the bottom frame. This is achieved by reducing the resonance magnification of the vertical vibrations and horizontal vibrations of the cab.

(Function) When the vibration damping device is excited by vertical vibration transmitted from the main rope or rail to the lower frame, or by horizontal vibration, the rubber container of the vibration damping device moves upward, downward, or , displaced horizontally.

At this time, a relative velocity occurs between the high viscosity fluid and the rubber surface that is in contact with the fluid, and a viscous shearing resistance force is generated in the high viscosity fluid, and a damping force is applied to the rubber itself, reducing the resonance magnification of vibration. Can be done. Therefore, the damping effect of vertical vibrations or horizontal vibrations occurring in the passenger compartment is improved.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 2 shows a view along the ■-■ arrow in FIG. 1. The vibration damping device 19 of the present invention has mounting fittings 13 and 14 on the upper and lower surfaces of the rubber 12, and one hollow hole 21 that passes through the rubber 12 from the upper fitting 13 and reaches the lower fitting 14. Alternatively, a plurality of holes 21 of the rubber container 2o are provided.
Inject sticky high viscosity fluid 22 into the upper mounting bracket 1.
A seat 23 that closes the hole 21 on the upper surface of 3, or.

A lid is provided, a brake 24 is fixed to the seat 23 with a nut 25,
The end of the brake 24 was placed in the highly viscous fluid 22. The space (h =5nwn or more). A gap t (3 m or more) is provided between the end side surface of the brake element 24 and the rubber side surface of the hole, so that the brake element 24 and the rubber side surface can be in contact even if there is an error in the attachment between the car floor 10 and the lower frame 8. I try not to do that. Further, the distance d between the lower surface of the brake element 24 and the bottom surface of the hole is set such that the brake child 24 does not come into contact with the bottom surface of the hole even at the maximum load (d=5no or more). A plurality of vibration damping devices 19 of the present invention are provided between the car floor 10 and the lower frame 8, similar to the general vibration isolator 11 shown in FIG.

According to this embodiment, when the vibration damping device 19 is excited by the vertical vibrations transmitted from the main rope 1 to the bottom frame 8 of the rider 4, the rubber 12 is moved from the bottom fitting 14 of the rubber container 20 to
The vibrations are transmitted to the upper fitting 13 via the upper mounting bracket 13, and upward and downward vibrations occur in the car floor 10. At this time, rubber container 2o
A relative velocity is generated between the high viscosity fluid 22 inside and the rubber surface in contact with the fluid, a viscous shearing resistance force is generated in the high viscosity fluid 22, and damping force in the upward and downward directions is applied to the rubber container 20. In addition, due to the upward and downward vibrations of the upper mounting bracket 13,
Since the brake 24 moves up and down to displace the high viscosity fluid 22, damping is applied to the car floor 10 that fixes the upper mounting bracket 13, and the relative velocity between the high viscosity fluid 22 and the rubber surface further increases. This increases the damping applied to the rubber container 20, and the vibration of the rubber container 2o is attenuated. Therefore, the resonance magnification of the vertical and vertical vibrations occurring in the car floor 10 can be reduced.

Similarly, when the horizontal vibration transmitted from the rail 1G to the lower frame 8 excites the vibration damping device 19 and the rubber container 20 vibrates in the horizontal direction, the high viscosity fluid 22 and the rubber surface in contact with the fluid vibrate. and between the brake 24 and the highly viscous fluid 22.
A relative velocity is generated between the high viscosity fluid 22, a viscous shear resistance force is generated in the high viscosity fluid 22, horizontal damping is applied to the rubber container 20, and vibrations of the rubber container 20 are attenuated. For this reason,
The resonance magnification of horizontal vibrations occurring in the car floor 10 can be reduced.

3 and 4 show other embodiments of the vibration damping device according to the present invention. In FIG. 3, a rubber intermediate seat 27 is provided in the middle of a rubber 12 having a hollow hole 21. The vibration damping device 19 is shown in which a high viscosity fluid 22 is injected into a container 26 and a lid 28 is provided on the upper fitting 13 to seal it. A hole is provided at the center of the rubber intermediate seat 27 through which the highly viscous fluid 22 can flow in and out. When the rubber container 26 vibrates upward, downward, or horizontally, the rubber seat 27 pushes away the high viscosity fluid 22, so there is a gap between the high viscosity fluid 22, the rubber surface in contact with the fluid, and the rubber intermediate seat 27. A relative velocity is generated, a viscous shear resistance force is generated, and damping is applied to the rubber container 26 to attenuate vibrations. Note that a brake 24 shown in FIG. 1 may be provided on the lid 28 and placed in the high viscosity fluid 22. Further, damping can be increased by arranging a plurality of rubber intermediate seats.

FIG. 4 shows a vibration damping device 19 having a structure in which a highly viscous fluid 22 is injected into the hole 21 of the rubber container 20 shown in FIG.

Furthermore, the vibration damping device of the present invention can be used as a vibration damping device for a hoisting machine in an elevator machine room, or as a vibration damping device for a suspended pulley support on a two-pair roping elevator car. Vibration reduction effect can be obtained.

〔Effect of the invention〕

According to the present invention, vertical and vertical vibrations occurring in the passenger compartment, and
Since the horizontal vibration can be sufficiently reduced, the riding comfort of the elevator can be improved.

[Brief explanation of drawings]

Fig. 1 is a side cross-sectional view of one embodiment of the present invention, Fig. 2 is a view taken along arrow u-n in Fig. 1, and Figs. 3, 4, and 5 are of a general elevator car allocation device. The explanatory diagram, FIG. 6, is a side view of a vibration isolator for a general elevator car. 5... Frame, 9... Car room, 11... Vibration isolator,
12...Rubber, 13...Top mounting bracket. ￥ Captive figure δ Kaya

Claims (1)

[Claims] 1. In an elevator in which a passenger compartment is installed in a framework via a vibration isolator, mounting fittings are provided on the upper and lower surfaces of the rubber for the vibration isolator,
A rubber container with one or more hollow holes extending from the upper fitting to the lower fitting through the rubber part, and a high viscosity fluid injected leaving a space above the hole in the rubber container. An elevator vibration damping device characterized by comprising: 2. A brake that does not come into contact with the rubber side surface of the hole and the bottom of the hole is placed in the high viscosity fluid injected into the hole of the rubber container, and the brake is placed on the top surface of the upper mounting bracket. The vibration damping device for an elevator according to claim 1, characterized in that the device is fixed to a seat or a lid provided therein. 3. One or more rubber intermediate seats are arranged in the middle part of the rubber of the rubber container according to claim 1, and the hole diameter provided in the rubber part near the center of the rubber intermediate seat. A vibration damping device for an elevator, characterized in that a rubber container is provided with a smaller through hole, and a high viscosity fluid is injected into the rubber container by leaving a space above the hole.