JPS5830874B2 - Vibration damping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration damping device that is attached to a shackle portion or the like in order to absorb vertical vibrations of, for example, an elevator corner.

Elevators are sometimes equipped with a vibration damping device that utilizes the relative displacement between the shackle and the car frame to damp the longitudinal vibration of the car.

For example, a hydraulic damper has been proposed that includes a piston that is directly connected to an arm extending at right angles from the shackle's rond and a cylinder that is fixed to the car frame.

However, with the above damper, due to the fleet angle of the rope and sheave, the shackle rod constantly swings laterally or rotates in the vertical plane in synchronization with the elevator car's elevation, and the rondo rotates around the vertical axis due to the rope being stretched. When the damper rotates, a force is generated in a direction that intersects with the axis of action of the damper.

As a result, the piston is tilted in the cylinder with respect to the operating direction axis and does not operate smoothly, and sometimes the damper itself is destroyed, resulting in a loss of damping effect.

This invention solves the above-mentioned problems, even if the shackle sways due to the fleet angle or rotates the shackle due to twisting of the rope, or in other words, if a displacement occurs between two objects in a direction other than the direction in which the damper operates. The present invention aims to provide a vibration damping device that can obtain the required vibration damping effect.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 1 is an elevator car frame, 2 is a car chamber provided therein, 3 is a first object consisting of a shackle inserted through the car frame 1 and engaged via a spring 4, and 5 is a main cable connected to the upper end of the main rope; 6 is a second object consisting of an arm protruding from the side frame of the car frame 1 with its protruding end facing the first object 3; 7 is a first object; A hydraulic damper is placed between the second objects 3 and 6, and 7a is a piston 7b of this damper.
8 is a cylinder, and 8 is a first connecting body whose both ends are fixed in an upright position at the longitudinal axis of the first object 3 and the axis in the operating direction of the piston, and is made of an elastic wire material with high tensile strength such as piano wire. It is made.

9 is a second connecting body similar to the first connecting body 8, and is connected to the cylinder 7a.
and the second object 6 are connected.

That is, the car frame 1 is suspended from the main rope 5 via the shackle 3, and the longitudinal vibration of the main rope 5 is damped by the damper 7.

Further, the first object 3 may be tilted as shown in FIG. 2 due to the fleet angle of a hoisting machine (not shown) or the like around which the main rope 5 is wound, the lateral vibration of the main rope 5, or the like.

In this case, the line of vibration action moves from a to b in FIG. is held on the axis in the direction of operation.

Therefore, since the movement of the line of vibration action does not affect the damper 7, even if the line of vibration action moves, the damper 7 operates normally and the desired damping action is achieved.

As a result, an elevator with good riding comfort can be obtained even when the main rope 5 is shaken or the like.

In addition, the first and second objects 3 and 6, the vibration suppressor 7,
Similar effects can be obtained even with devices other than elevators as long as they are equipped with the first and second connecting bodies 8, 9, etc.

FIG. 3 shows another embodiment of the present invention.
, the same reference numerals as in FIG. 2 indicate the same parts, and 7a is a piston made integrally with the first object.

That is, the first connecting body 8 in the embodiments of FIGS. 1 and 2
Although omitted, when the first object 3 is tilted, the second connecting body 9 is elastically deformed.

Therefore, although a detailed explanation will be omitted, it is clear that the same effects as those of the embodiments shown in FIGS. 1 and 2 can be obtained in this embodiment as well.

Note that in the embodiments shown in FIGS. 1 and 2, even if the second connecting body 9 is omitted and the cylinder 7b is directly fixed to the second object 6,
The same effect as the embodiment shown in FIG. 3 can be obtained.

FIG. 4 also shows another embodiment of the present invention, in which the same reference numerals as in FIGS. 1 and 2 indicate the same parts, 10 is a bearing box provided at the upper end of the piston 7a, and 11 is a bearing made of a rolling bearing such as a ball bearing which is attached to this and pivotally supports the first connecting body 8 in an upright state.

That is, even if the main rope 5 is twisted and the first object 3 and the first connecting body 8 rotate, since the bearing 11 is provided, the rotation of the first connecting body 8 will not be transmitted to the piston 7a.

Therefore, no movement of the piston 7a that is unnecessary for the operation of the vibration damper 7 occurs, so that the vibration damping action is not inhibited.

Therefore, a stable effect of the damper 7 can be obtained, and the riding comfort of the elevator can be improved.

In addition, in FIG. 4, even if the bearing 11 is disposed at at least one of the other holding parts of the first and second connecting bodies 8 and 9, the difference between the bearing 11 and the embodiment shown in FIG. A similar effect can be obtained.

As explained above, the present invention has a hydraulic vibration damper disposed between two objects that are relatively displaced, and the object and the vibration damper are connected via a connecting body made of an elastic wire, so that the object is When the vibration damper is displaced in a direction other than the operating direction axis, the connecting body elastically deforms to prevent the vibration damper from malfunctioning, and even when the object rotates, this rotation does not reach the vibration damper. This is how it was done.

As a result, it is possible to eliminate the influence of displacement of an object in a direction other than the damping action direction of the vibration damper, thereby realizing a vibration damping device that can obtain a stable desired damping action.

[Brief explanation of the drawing]

Fig. 1 is a conceptual front view of an elevator corner showing an embodiment of a vibration damping device according to the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1 to explain the operation of Fig. 1, and Fig. 3 is an embodiment of the invention. FIG. 4 is also a view showing another embodiment of the present invention and is an enlarged view of the main part of FIG. 1, showing another embodiment of the vibration damping device according to the present invention. 3...First object, 6...Second object, 7
... Vibration damper, 8... First connection body, 9.
...Second connected body. In addition, the same parts or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of Claims] 1. A hydraulic vibration damper having a cylinder filled with hydraulic fluid and a piston installed in the cylinder and operated, which is disposed between two relatively displaced objects, in which one end is One of the cylinder and the piston is held in an upright state on the axis in the operating direction of the vibration damper, and the other end is held in an upright state on the axis in the operating direction of the allocator of one of the two objects. The displacement of the object is transmitted to the vibration damper, and when the two objects are relatively displaced in an abnormal direction other than the direction in which the damper operates, the vibration damper is elastically deformed, absorbs the abnormal direction displacement, and transmits the displacement of the object to the vibration damper. A vibration damping device comprising a connecting body made of an elastic wire for transmitting vibration, the connecting body being disposed between at least the vibration damper and one of the two objects. 2 A hydraulic vibration damper having a cylinder filled with hydraulic fluid and a piston that is installed and operated within the cylinder is arranged between two objects that are relatively displaced, and one end is connected to one of the cylinder and the piston. The vibration damper is held in an upright position on the operating axis of the damper, and the other end is held in an upright position on the operating axis of the allocator of one of the two objects, so that the displacement of the object is damped. a connection made of an elastic wire that elastically deforms when the two objects are relatively displaced in an abnormal direction other than the damper operating direction, absorbs the abnormal direction displacement, and transmits the displacement of the objects to the damper; a rolling bearing disposed on at least one of the holding portions of the connecting body, the holding portion pivoting the connecting body to either the vibration damper or the object in an upright state; is arranged between at least the above-mentioned allocator and one of the above-mentioned two objects.