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An emergency spring for the secondary suspension of locomotives

A secondary suspension and locomotive technology, applied in the field of emergency springs, can solve the problems of no pre-compression function, small rigidity, and affecting vehicle comfort, and achieve the effect of convenient and simple assembly and maintenance operations and simple structure

Active Publication Date: 2015-12-02
ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it also has significant disadvantages: there is no pre-compression load before loading, and when the rubber airbag of the air spring fails, the emergency spring has small stiffness and large deformation under no-load load, which may easily lead to the rubber airbag top plate of the air spring and its auxiliary spring. The contact of the wear plate produces friction, which cannot meet the dynamic requirements of the vehicle and affects the comfort of the vehicle running
There is no stop limit function, if the load is too large, the rubber part of the emergency spring will cause excessive strain due to the heavy load, and defects such as rubber cracks will easily occur, resulting in failure of the emergency spring
The Chinese patent with the publication number CN201747838U considers the stop limit function in the design, but the components are not fixed together when loaded, and it does not have the expected pre-compression function at all, and its limit function also needs to be loaded can only be realized after

Method used

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  • An emergency spring for the secondary suspension of locomotives
  • An emergency spring for the secondary suspension of locomotives
  • An emergency spring for the secondary suspension of locomotives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 and figure 2 As shown, the emergency spring used for the secondary suspension of the locomotive according to the present invention is mainly composed of an upper cover plate 1, a lower base 2, and a metal rubber damper 3 between the upper cover plate and the lower base. The metal rubber shock absorber is composed of two independent rectangular metal rubber springs, which is a structure in which the upper and lower end plates, the elastic rubber body 303 and the metal partition plate 304 are vulcanized and connected, and arranged in an inverted V shape. The lower side of the upper cover plate is in contact with the upper end plate 301 of the metal rubber spring, and the upper side of the lower base is in contact with the lower end plate 302 of the metal rubber spring. The contact part where the upper and lower end faces of the vibrator are adapted. Such as figure 1 As shown, the lower side of the upper cover plate and the upper side of the lower base...

Embodiment 2

[0029] Such as image 3 and Figure 4 Shown is another embodiment of the present invention, this embodiment is similar to Embodiment 1, the only difference is that the metal rubber vibration damper 3 is an integral type, the shape is similar to the truncated cone top, and the inner hollow cone Shaped, the inner wall and outer surface of the cone are metal rubber spring end plates, which are vulcanized into one with multi-layer elastic rubber bodies and metal partitions. In order to adapt to the conical metal rubber shock absorber, a conical boss is set on the lower base 2, and a conical space that can accommodate the metal rubber spring is set on the lower side of the upper cover plate 1, and the bolt 4 connects the upper cover plate 1, the elastic rubber The shock absorber 3 and the lower base 2 are connected as a whole. In the unloaded state of the emergency spring, the conical upper and lower end surfaces (not the upper and lower end plates) formed by the metal rubber sho...

Embodiment 3

[0031] For the precompression load and stop limit scheme proposed in the technical scheme of the present invention, there is another scheme that can be realized: this embodiment is as follows Figure 5 As shown, the connecting piece that connects the upper cover plate 1, the metal rubber shock absorber 3, and the lower base 2 is a long bolt 4 placed in the horizontal direction. The metal rubber shock absorber is the same as that in Example 1, arranged in a V shape or an inverted V shape; symmetrically on both sides, an oval groove 8 is set on the upper cover plate, and a through hole 6 is set on the lower base (the opposite setting can also be made, That is, the lower base is provided with an elliptical groove and the upper cover is provided with a through hole), and the long bolts pass through the through hole and the elliptical groove to fix the upper cover and the lower base as a whole. Relative to the size, the metal rubber shock absorber is installed between the upper cov...

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Abstract

An emergency spring for the secondary suspension of a locomotive. The connecting piece connects the upper cover plate and the lower base, and the metal rubber shock absorber is limited therein to apply pre-compression, and there is a certain space between the upper cover plate and the small base The distance, which is the maximum deformation distance of the emergency spring in the vertical direction, provides a limit stop in the vertical direction. At the same time, the diameter of the bolt used as the connecting piece is smaller than the diameter of the passing hole, which provides a certain horizontal limit stop function for the emergency spring. The invention solves the expected pre-compression of the emergency spring used for the secondary suspension of the locomotive, and has the limit stop function in the horizontal and vertical directions; , through holes, oval grooves, etc., can be adjusted conveniently to adjust the pre-compression amount of the emergency spring and the limit stop distance. The present invention has simple structure, and operations such as processing, assembling and maintenance are very convenient and simple.

Description

technical field [0001] The invention belongs to the technical field of locomotive suspension vibration reduction, and in particular relates to an emergency spring used for the secondary suspension of a locomotive. Background technique [0002] The emergency spring and the air spring system are installed in parallel between the car body and the frame of the locomotive, and belong to the secondary suspension damping element of the vehicle, and bear the load of the car body together with the air spring. When the vehicle is running normally, the air spring system bears the vertical load of the vehicle body, the longitudinal load during braking and braking, and the lateral load generated when the vehicle crosses the curve. The emergency spring is suspended and does not bear any external load. When the airbag of the air spring system fails, the height of the car body drops, and the emergency spring contacts the facing surface of the frame, replacing the air spring system to bear t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/06B61F5/08
Inventor 丁纬孙海燕
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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