JPH0331184A - Cage frame vibration isolating device for elevator - Google Patents

Abstract

PURPOSE:To optimize the vibration isolating effect by adjusting the load applied to elastic bodies inserted between a cage frame and sash pulleys of the cage frame via a lever action. CONSTITUTION:A pair of the right and left beams 11 and 11' are fitted to the upper beam 2b of a cage frame 2 via load receiving rubbers 12 and fulcrum vibration isolating rubbers 13. Vibration isolating rubbers 13 on the cage frame 2 side of beams 11 and 11' are fitted to the upper beam 2b and the cage frame 2 via spherical seats 14a, 14b and 15a, 15b. A pair of the right and left beams 11 and 11' are fixed by stoppers 16 at the center side, and a pair of sash pulleys for the cage 7 and 7' wound with a rope 1 are rotatably supported. Load receiving rubbers 12 can be moved to the right and left, the load is minimum at the center and becomes larger near both ends serving as fulcrums, and rubbers 12 are installed at positions where the rubber characteristic suits the load. The vibration isolating effect is adjusted optimum.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a vibration isolating device for an elevator car frame.

[Prior Art] Fig. 3 is a block diagram of a conventional elevator, and Fig. 4 is an enlarged view of a car frame vibration isolator. In the figure, 1 is a rope, 2 is a car frame, and 2a
A basket, 3 is a hoist, 4 is a deflection wheel, 5 is a counterweight, 6 is a hanging wheel for weights, 7 is a hanging wheel for cages, 8
9 is an elastic body, and 10 is a beam.

As shown in the figure, an elevator car frame 2 is suspended by a rope 1 and raised and lowered by a hoist 3. At this time, winding machine 3
In order to prevent vibrations from being transmitted to the car 2a via the car suspension wheel 7 and the car frame 2, an elastic body 9 such as rubber is interposed between the car frame 2 and the suspension base 8 of the suspension wheel 7. absorbs vibrations.

[Problems to be Solved by the Invention] By the way, in the above vibration isolating device, the elastic body 9 such as vibration isolating rubber
There are many problems such as the weight of the car 2 being hung does not match the characteristics of the anti-vibration rubber and the vibration of the hoist cannot be absorbed, or the anti-vibration rubber is soft and the rubber flexes excessively, causing the car to sink too much.

The present invention has been made in order to solve the above-mentioned problems in conventional elevators, and it is an object of the present invention to provide a vibration isolating device for an elevator car that is configured to be able to adjust the load applied to the elastic body.

[Means for Solving the Problems] In order to achieve the above object, the elevator according to the present invention is configured so that the load applied to the elastic body of the car frame can be adjusted using a lever action.

[Function] The load applied to the elastic body can be adjusted by changing the fulcrum of the lever, so no unreasonable load is applied to the elastic body, which prevents it from being able to absorb the vibrations of the hoist, or from bending of the vibration-proof rubber or soft rubber. This can prevent troubles such as the car from sinking too much due to an excessive amount of water.

[Embodiment of the Invention] Fig. 1 is a front view of a car frame vibration isolator showing an embodiment of the present invention, in which 1 is a rope, 2 is a car frame, 2b is an upper beam, and 7 is a car frame. A hanging wheel, 7a is a hanging axle, 11 is a beam,
12 is a rubber load receiver, 13 is a fulcrum anti-vibration rubber, 14a, 1
4b is a spherical seat A115a, and 15b is a spherical seat B116 is a stopper.

As shown in the figure, a pair of beams 11 are connected to spherical seats A14a, b via fulcrum vibration isolating rubber 13 at the top and bottom of one end of each beam.
and is supported by spherical seats B15a and B15b, and a stopper 16 is fixed to the other end.

Also, a pair of suspension wheels 7 for the car are installed at the lower part of the beam 1, and the car frame 2 is suspended by a rope. Furthermore, a load receiver is interposed between the upper part of the beam [] and the upper beam 2b of the car frame so as to be movable in the longitudinal direction of the beam.

In the figure, the load applied to the car suspension wheel 7 is transmitted to the beam 11 via the support 7a, and this load is transferred to the spherical seat 14.15.
The load receiver is transmitted to the rubber 12 by the lever principle using the fulcrum as the fulcrum. Therefore, if the rubber 12 of the load receiver is positioned near the center of the upper beam 2b, the load applied to the rubber 12 of the load receiver will be small, and the closer it is to the spherical seat [4,]5, which is the fulcrum, the greater the load will be. . Therefore, if the rubber 12 of the load receiver is placed in a position where its rubber characteristics are suitable for the load, the rubber 12 of the load receiver will not receive an excessive load or be unable to absorb vibrations.

In addition, when the load W applied to the rubber 12 changes, the load receiver
The natural frequency f of the rubber 12 of the load receiver is expressed by the following formula.

FIG. 2 shows another embodiment of the present invention. In contrast to the above embodiment in which 2=10-pings are used, this embodiment has a 1:1
This is an example of 0-ping. In the figure, 17 is a rod and 18 is a spring.

Furthermore, the present invention can be used not only for vibration isolating the elevator car frame shown in the above embodiments, but also for vibration isolating devices for the bed and machine platform of a hoisting machine, vibration isolating devices for a car floor, and the like.

[Effects of the Invention] The present invention is configured so that the load applied to the elastic body of the car frame in the elevator can be adjusted using a lever action, so that the load applied to the elastic body can be matched to the elastic properties of the elastic body. It is now possible to set the vibration damping effect within a certain range, making it possible to optimize the anti-vibration effect.

[Brief explanation of drawings]

Fig. 1 is a front view of the mounting section of a car hanging wheel according to one embodiment of the present invention, Fig. 2 is a front view of another embodiment, Fig. 3 is a configuration diagram of a conventional elevator, and Fig. 4. The installation of the hanging wheel for the basket is a front view of the part. In the diagram, 1 is the rope, 2 is the car frame, 7 is the car hanging wheel, 7a
is its axis, 11 is the beam, 12 is the rubber load receiver, 13 is the fulcrum anti-vibration rubber, 143% b is the spherical seat A % 15 a
% b is the spherical seat 8116 is the stopper, 17 is the rod,
18 is a spring. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] In an elevator in which an elastic body is interposed between a hanging wheel of the car frame and the car frame in order to prevent the vibration of the hoist from being transmitted to the car frame suspended by a rope, the load applied to the elastic body An elevator car frame vibration isolating device characterized in that the elevator car frame is configured to be adjustable using a lever action.