Inner cylinder structure of oil damper for railway vehicle and machining tool of structure

Abstract

The invention relates to an inner cylinder structure of an oil damper for a railway vehicle. According to the inner cylinder structure, at least three inwards-protruding bosses are evenly arranged inthe lower portion of an inner cylinder body, and the bosses are formed through extrusion. Further, a machining tool of the inner cylinder structure is provided. The inner cylinder structure and the machining tool have the beneficial effects that through special design of the inner cylinder structure, the technical defect that parts of the oil damper are hard to machine due to a traditional inner cylinder structure is overcome, the parts of the oil damper are less difficult to machine, the quality is guaranteed and the product cost is reduced; besides, the inner cylinder structure does not needto be machined in a machining mode, a bottom valve matched with the inner cylinder is simple in structure, the standardization degree is improved, the wall thickness of the inner cylinder is not reduced, the production cost can be effectively reduced, and the assembly mode is simple. After the novel structure is adopted, the production cost can be reduced in the production process, and the production efficiency is improved. Due to the application of the machining tool, the high machining precision of the special inner cylinder structure is effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of oil pressure shock absorbers for rail vehicles, and in particular relates to an inner cylinder structure in the oil pressure shock absorbers for rail vehicles. Background technique [0002] The inner cylinder in the existing rail vehicle hydraulic shock absorber structure mainly has two structures, such as figure 1 As shown, one inner cylinder is a hollow cylindrical structure, and the other is as figure 2 As shown, the cylinder wall of one section of the inner cylinder is of normal thickness, but the cylinder wall of the other section is thinner. No matter what kind of inner cylinder there are certain technical defects, the specific performance is: the use of figure 1 In the inner cylinder structure, when it is assembled with the bottom valve body, the structure of the bottom valve body needs to have a fixed bottom core valve structure, the structure of the bottom valve is relatively complicated, and ...

AI Technical Summary

Problems solved by technology

No matter what kind of inner cylinder there are certain technical defects, the specific performance is: the use of figure 1 For the inner cylinder structure, when it is assembled with the bottom valve body, the structure of the bottom valve body needs to have a structure to fix the bottom core valve, the structure of the bottom valve is relatively complicated, and the bottom valve seat needs to be processed with a groove structure; figure 2 For the inner cylinder structure, due to the need to process the inner cylinder, the wall thickness is reduced, which reduces the strength of the inner cylinder to a certain extent. Similarly, the guide cover also needs to process a groove structure that is difficult

[0003] Due to the above-mentioned technical defects, the production of various components of the hydraulic shock absorber that meets the design requirements is difficult to process and the parts are complicated, resulting in relatively high product costs.

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