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Constant contact steel spring crack preventing method and vertical backstop

A vertical stopper and steel spring technology, applied in bogies, railway car body parts, axle box installation, etc., can solve the problem of greatly improving the fracture resistance of steel springs, it is difficult to effectively reduce the metal fatigue of steel springs, and there is no adjustment variable Rigidity and other issues to achieve the effect of compact structure, preventing steel spring breakage and reducing wear

Active Publication Date: 2017-03-08
ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the various elastic buffer devices in the above-mentioned patents do not have a structure to adjust the variable stiffness, and the adjustment of the stiffness is also limited due to their simple structure, so it is difficult to effectively reduce the metal fatigue of the steel spring, and it is still difficult to greatly improve the stiffness of the steel spring. The ability of the spring to resist fracture, so how to prevent the fracture of the steel spring more effectively needs to be further explored

Method used

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  • Constant contact steel spring crack preventing method and vertical backstop
  • Constant contact steel spring crack preventing method and vertical backstop
  • Constant contact steel spring crack preventing method and vertical backstop

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 5 As shown, a positioning base 4 is fixed above the axle box 5, and a double-volume spiral steel spring 2 is arranged above the positioning base 4, and the steel spring 2 supports the weight of the locomotive above the bogie frame 6. In order to reduce the vertical load borne by the steel spring 2 and reduce the metal fatigue generated by the steel spring 2 during locomotive operation, thereby preventing the steel spring 2 from breaking, a vertical stop 1 is provided in the steel spring 2 . The base flange 132 of the vertical stop 1 abuts against the positioning base 4 , and since the vertical stop 1 and the positioning base 4 are both revolving bodies, the vertical stop 1 can be stuck in the positioning base 4 . A frame guide cylinder 3 is arranged directly above the vertical stop 1. When the locomotive is unloaded, the rubber boss 12 of the vertical stop 1 is in contact with the frame guide cylinder 3, and the locomotive moves from no load to the maxim...

Embodiment 2

[0063] Such as Figure 6 As shown, the difference from Embodiment 1 is that the rotator-shaped rubber boss 12 above the rubber body 11 is no longer conical, but the generatrix 123 of the rotator-shaped rubber boss 12 is outward. Extruded smooth curves. Such as Figure 7 As shown, the diameter D3 of the rubber boss 12 refers to the diameter of the bottom of the rubber boss 12 , which is different from the diameter D1 of the rubber boss 12 in Embodiment 1, which refers to the diameter of the top of the rubber boss 12 . The preferred value of the diameter D3 of the rubber boss 12 in this embodiment is 20mm-60mm.

[0064] The busbar 123 is a gyratory-shaped rubber boss 12 protruding outwards with a smooth curve. When the locomotive load increases and the frame guide cylinder 3 is pressed down, the stiffness curve of the vertical stop 1 can be made smoother, thereby It can more effectively prevent the rigidity of the vertical stop 1 from increasing suddenly, and can better absor...

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Abstract

A constant contact steel spring crack preventing method and a vertical backstop are provided. A revolving body-shaped rubber boss is arranged over a rubber main body; the rubber boss has a contact with a framework guide cylinder upon zero load of a locomotive; rigidity of the vertical backstop can be adjusted via adjustments of the diameter or the height of the rubber boss and the rubber main body; an included angle between an annular straight flat section of the rubber main body and a horizontal surface is adjusted, so variable rigidity of the vertical backstop can be adjusted; the rubber boss is connected with the rubber main body via an annular arc-shaped section; times of variable rigidity of the vertical backstop can be adjusted via adjustments of section numbers of the annular arc-shaped section of the vertical backstop; a pedestal is embedded into the rubber main body of the vertical backstop, so the pedestal can space the vertical backstop; positions of a vertical backstop spacing position and rigidity of the vertical backstop can be adjusted via adjustments of the height of the pedestal; vertical load of a steel spring can be reduced via adjustments of rigidity, variable rigidity and spacing position of the vertical backstop; and metal fatigue of the steel spring during the operation of the locomotive can be reduced, so steel spring crack can be prevented therefore.

Description

technical field [0001] The invention relates to a buffer device used on a locomotive, in particular to a vertical stop for a buffer locomotive primary suspension system. Background technique [0002] At present, in the manufacturing process of railway locomotives, spring devices are widely used for bearing and vibration reduction. As a key component of locomotives, springs have an important impact on the dynamic performance and running quality of locomotives. With the implementation of railway speed-up and heavy-duty strategy, the number of failures affecting the running performance of locomotives due to broken springs has gradually increased, and the running stability of locomotives has deteriorated, which has caused hidden dangers to traffic safety. [0003] The steel spring directly above the locomotive axle box is one of the main parts of the bogie, and the steel spring bears the weight of the locomotive above the bogie frame. The stiffness of the vertical force transmi...

Claims

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Application Information

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IPC IPC(8): B61F5/50B61F5/30
CPCB61F5/301B61F5/305
Inventor 冯万盛罗俊李斌肖祥龙陈俊辉曾慧
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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