Axial and circumferential positioning device of idler shaft

A technology of circumferential positioning and idler shaft, which is applied in the field of transmission system, can solve the problems of looseness, disassembly and assembly of the idler shaft and inconvenience, and achieve the effect of compact structure, loose prevention and convenient disassembly

CN111998055AInactive Publication Date: 2020-11-27CHINA NORTH VEHICLE RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-11-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an axial and circumferential positioning device of an idler shaft. The axial and circumferential positioning device comprises a left-side supporting shell, a right-side supporting shell, a fixed baffle and fastening bolts; a stepped shaft is adopted as the idler shaft, the outer diameter of the idler shaft is sequentially reduced from one end to the other end, a large end of the idler shaft is supported on the right-side supporting shell, and a small end of the idler shaft is supported on the left-side supporting shell; a right-side supporting bearing and a left-side supporting bearing are separated through a spacer ring and are axially limited; a large-end shaft shoulder of the idler shaft axially limits the right-side supporting bearing, and the left-side supporting shell axially limits the left-side supporting bearing; a positioning neck and a threaded hole are formed in the small end of the idler shaft; a corresponding positioning through hole is formed in the left-side supporting shell; the fixed baffle penetrates through the positioning through hole to be installed in the positioning neck and is pressed on the small end of the idler shaft and the left-side supporting shell through fastening bolts, wherein the positioning neck is in a long-strip shape, and the positioning through hole is formed by coaxially communicating a circular through hole anda kidney-shaped hole; and the idler shaft is in clearance fit with both the right-side supporting shell and the left-side supporting shell.
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Description

technical field

[0001] The invention relates to the technical field of transmission systems, in particular to an axial and circumferential positioning device for an idler shaft. Background technique

[0002] The idler structure (including the idler and the idler shaft) is a common structure in gear transmission, directly connecting the driving wheel and the driven wheel; the idler structure only changes the rotation direction of the output, and does not change the transmission ratio, and the idler shaft is an idler structure. key parts. Normally, the idler shaft does not rotate with the idler, and the axial and circumferential positioning of the idler shaft is realized by the interference fit with the supporting shell, but in actual use, the idler shaft loosens and falls out due to the small amount of interference fit Frequent problems affect the reliability of the entire gear transmission system; and the large interference design will make the installation and disassembly ...

Examples

Embodiment Construction

[0024] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] This embodiment provides an axial and circumferential positioning device for the idler shaft, which can effectively solve the problems of the idler shaft coming loose and being inconvenient to disassemble.

[0026] Such as figure 1 As shown, the positioning device includes: a right support housing 3, a left support housing 4, a fixed baffle 8, a fastening bolt 9 and an elastic gasket 10;

[0027] The connection relationship of the positioning device is as follows: figure 2 As shown, the idler shaft 2 is designed as a stepped shaft, and its outer diameter decreases successively from one end to the other end. Figure 5 shown) on; as figure 1 As shown, the idler 1 is supported in the middle of the idler shaft 2 through the right side support bearing 5 and the left side support bearing 6; wherein, the right side support bearing 5 and the left side s...