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A method for preventing steel spring from breaking and concave vertical stopper

A vertical stopper and steel spring technology, applied in bogies, railway car body parts, axle box installation, etc., can solve the problem of effectively reducing metal fatigue of steel springs, variable stiffness without adjustment, and greatly improving the resistance of steel springs. Fracture and other problems, to achieve the effect of compact structure, preventing fracture and reducing metal fatigue

Active Publication Date: 2018-07-03
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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  • A method for preventing steel spring from breaking and concave vertical stopper
  • A method for preventing steel spring from breaking and concave vertical stopper
  • A method for preventing steel spring from breaking and concave vertical stopper

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 . Just above the vertical stopper 1 is provided with a frame guide cylinder 3. When the locomotive is unloaded, the rubber body top 116 of the vertical stopper 1 is in contact with the frame guide cylinder 3, and the locomotive moves from no load ...

Embodiment 2

[0063] Such as Figure 6 As shown, the difference from the first embodiment is that no rubber boss 12 is provided in the stopper groove 117, and the whole stopper groove 117 is a revolution-like groove with a generatrix 118 that is a smooth curve. The height H6 of the stop groove 117 in this embodiment corresponds to the height H2 of the rubber body 11 at the stop groove 117 in the first embodiment, but H6 is smaller than H2, and the preferred value of H6 is: 6mm -30mm. The thickness D1 of the rubber body top 116 in this embodiment is consistent with the thickness D1 of the rubber body top 116 in Embodiment 1, and the preferred value is also 5mm-15mm.

[0064] After removing the rubber boss 12 in the stopper groove 117, the rigidity of the vertical stop and the adjustable part of the rigidity become less. But the rigidity of the vertical stop 1 can still be adjusted by adjusting the thickness of the rubber body 11 at the stop groove 117 and the height H6 of the stop groove 1...

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Abstract

A method for preventing breakage of a steel spring and an inwardly-recessed vertical stop are provided; the upper end of a rubber body is a hollowed structure, the rubber body contacts a frame guide barrel when a locomotive is idle, the rigidity of the vertical stop may be adjusted by adjusting the thickness or height of the hollow portion of the rubber body and the diameter or height of a solid portion of the rubber body, the outer side of the rubber body is provided with a circular straight segment and circular arc segments, and the variable rigidity of the vertical stop may be adjusted by adjusting an included angle of the circular straight segment with horizontal plane, the times of rigidity variation of the vertical stop may be adjusted by adjusting the number of the circular arc segments of the rubber body, a base is embedded in the rubber body of the vertical stop such that the base can limit the vertical stop, and the limited position of the vertical stop and the rigidity of the vertical stop may be adjusted by adjusting the height of the base; vertical load on the steel spring is reduced by adjusting the rigidity, variable rigidity and limited position of the vertical stop, metal fatigue of the steel spring occurring in the operating process of the locomotive is reduced, and the breakage of the steel spring is prevented.

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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Patent Type & Authority Patents(China)
IPC IPC(8): B61F5/50B61F5/32
Inventor 张玉祥雷军玉何海军肖祥龙曾慧
Owner ZHUZHOU TIMES RUIWEI ANTI VIBERATION EQUIP LTD
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