Vertical stop catch with wear plate and method for preventing fracture of steel spring

Abstract

The invention discloses a vertical stop catch with a wear plate and a method for preventing fracture of a steel spring. The wear plate is embedded to the top of a rubber body, and the rigidity of the vertical stop catch can be adjusted by adjusting the diameter or height of the wear plate; a base is embedded into the rubber body and is used for limiting the rubber body of the vertical stop catch, and the rigidity of the vertical stop catch can be adjusted by adjusting the height of the base; the upper end of the rubber body is configured to have two or more annular flat-straight sections, and the variable rigidity of the vertical stop catch can be adjusted by adjusting an included angle between the annular flat-straight sections and a horizontal plane; and by adjusting the rigidity, the variable rigidity and a limiting position of the vertical stop catch, the vertical load born by the steel spring can be reduced, and metal fatigues generated by the steel spring during running of a locomotive can be reduced, thereby preventing the fracture of the steel spring. The vertical stop catch also has the characteristics that the structure is firm and cannot be damaged easily, the wear plate, the rubber body and the base are combined compactly and cannot be loosened and divorced easily, and the vertical stop catch is wide in application range and strong in universality.

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...

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

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