RU2380591C1 - Pivot vibration isolator - Google Patents

Abstract

FIELD: engineering industry.

SUBSTANCE: vibration isolator includes flexible elements located between support rings and attachment device of flexible elements to support rings. Flexible elements are made of three springs located uniformly in a circumferential direction of support rings, or springs with additional flexible element. Attachment device of flexible elements is made of two shells with bolt or rope connection. Either all springs are installed between support rings without pre-tensioning, or with pre-tensioning, or some part of springs is installed without pre-tensioning, and some part - with pre-tensioning, or some part with pre-tensioning, without pre-tensioning and some part - with a gap.

EFFECT: simplifying the design and providing attachment reliability of flexible elements.

5 dwg

Description

The invention relates to the field of diesel locomotive and track machines, and in particular to pivot vibration isolators to reduce vibration and noise transmitted from the chassis to the machine frame and vice versa. The invention can also be used in any field of technology.

Known vibration isolator of the pin of locomotives and track machines [1, 2], which contains support rings and an elastic rubber element vulcanized between the support rings.

Significant disadvantages of the specified vibration isolator are limited temperature and mechanical properties, changes over time of the dynamic characteristics.

The closest technical solution in terms of technical nature and the achieved result is an all-metal vibration isolator containing support discs, one of which has an inner central protrusion with a threaded hole, attached to the inner surfaces of the support discs and the stops with washers evenly spaced around the circumference, elastic elements located between the latter , and damper [3].

The disadvantages of the known vibration isolator are the complexity and unreliability of fastening of the elastic elements.

The technical result of this invention is to ensure simplicity of design and reliability of fastening of elastic elements.

This technical result is achieved by the fact that the pivot vibration isolator is made with elastic elements from at least or at least three springs located uniformly around the circumference of the support rings, or springs with additional elastic elements, and the means of fastening the elastic elements are made of either two glasses with bolt connections or with cable connections.

In this case, the springs or all are installed between the support rings without pretensioning or with pretensioning, or part of the springs are installed without pretensioning, and part with tensioning, or part with tensioning, without tension and part with clearance.

Figure 1 shows a General view of the vibration isolator, a cross section, figure 2 is a top view.

Figure 3 shows a General view of the vibration isolator, a cross section with a cable connection, figure 4 is a top view.

Figure 5 shows a General view of the vibration isolator, a cross-section with a bolted connection and additional elastic elements between the plates, for example from rubber, disk springs, etc.

The pivot vibration damper comprises support rings 1 and 2, elastic elements from springs 3, means for fastening the elastic elements 3 to the support rings 1,2, consisting, for example, of cups 4, 5 and bolt connection 6 with locking element 7 (Fig. 1).

Presented in figure 2, the vibration isolator also contains additional elastic elements, for example, in the form of rubber bushings 8 or disk springs 9.

4, 5, additional elements 10 are made, for example, of metal or natural rubber, which have a cylindrical shape and are placed inside the springs 3, made in the form of segments 11, 12 of a steel cable, the rings of which are fixed to the rings, for example, by welding 13. The vibration isolator of the kingpin works as follows. When the wheels hit the bumps or through connecting the ends of the rail with defects, the spring 1 of the vibration isolator is compressed, significantly softening the shock transmitted from the wheels to the trolley and frame. Unclenching, the spring 1 informs the trolley and the frame of the oscillation, by which, by selecting the appropriate characteristic of the elastic elements 1, 2, 3, 4, and also using the ability to install elastic elements in various versions, i.e. with pre-tension, without pre-tension or with a gap, you can give the desired character.

The use of a pivot vibration damper of the indicated design makes it possible to exclude the copying of the profile of railway irregularities by the frame and improve the smoothness of the train, while this creates the possibility of movement without unpleasant sensations and fatigue of people and damage to transported goods.

Due to the possibility of varying the simultaneous use of elastic elements (in various combinations) and the applied fastening methods, it is possible to change the basic characteristics of the vibration isolator at constant overall dimensions and the reliability of the vibration isolator.

Information sources

1. Rakhmatulin M.D. Repair of diesel locomotives. 3rd ed., Revised. and add. M .: Transport, 1997.447 s.

2. Diesel locomotive TSMBA: Operation and Maintenance Manual. 2nd ed. reslave. and add. M .: Transport, 1977.173 s.

3. Ilyinsky B.C. Protection of REA and precision equipment from dynamic influences. - M .: Radio and communications, 1982. - 296 p. (Fig. 8.21. p. 253).

Claims (1)

A pivot vibration damper comprising support rings, elastic elements located between the latter, means for attaching elastic elements to support rings, characterized in that the elastic elements are made of at least three springs located uniformly around the circumference of the support rings, or of springs with an additional elastic element and the means of fastening the elastic elements is made of two glasses or with a bolted connection, or with a cable connection, while the springs or all are installed between the support rings without preliminary about tension, or with pre-tension, or part of the springs installed without pre-tension, and part with pre-tension, or part with pre-tension, and part without pre-tension and part with clearance.

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