CN210531391U - Self-lubricating shaft for idler gear - Google Patents

Abstract

The utility model discloses a self-lubricating axle for empty set gear, including self-lubricating axle, clearance fit is done with empty set gear's hole to one section excircle of self-lubricating axle, and self-lubricating axle and one section excircle of empty set gear hole matched with become bright and clean surface through abrasive machining, and the excircle of self-lubricating axle has designed the spiral annular simultaneously, and the spiral annular can play the effect of oil storage and oil guide. The utility model discloses the advantage: the utility model discloses a unique design in structure realizes the oil storage, leads the self-lubricating process of oil, has avoided axle and empty sleeve gear because the lubricated not enough condition that leads to empty sleeve gear and axle locking of sliding friction. The utility model is an optimized design made for the prior design, which can not change the internal structure of the gear box; due to the simple structure, the realization is very easy, and the realization cost is very low.

Description

Self-lubricating shaft for idler gear

Technical Field

The utility model relates to a technical field of transmission shaft for the gear box especially relates to a self-lubricating axle for empty sleeve gear.

Background

A self-lubricating shaft is mainly applied to a transmission gear box adopting an empty gear design scheme, and realizes the self-lubricating process of oil storage and oil guide through the special structural design. In the past, the matching of the hollow gear and the shaft only adopts the clearance fit of the shaft excircle and the hollow gear inner hole; during operation, the two have sliding friction, though some lubricating oil can be stored in clearance fit, when the rotational speed of gear box improved certain degree, often appear lubricated not enough and lead to the condition emergence of empty sleeve gear and axle locking.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a self-lubricating axle for empty sleeve gear, its simple structure, easy realization can solve the problem of empty sleeve gear and the lubricated difficulty of axle.

The utility model adopts the following technical scheme: the utility model provides a self-lubricating axle for empty sleeve gear, includes self-lubricating axle, clearance fit is made with the hole of empty sleeve gear to one section excircle of self-lubricating axle, the bright and clean surface is processed into through grinding to one section excircle of self-lubricating axle and empty sleeve gear hole matched with, and the spiral annular has been designed to the excircle of self-lubricating axle simultaneously, and the spiral annular can play the effect of oil storage and oil guide.

Preferably, the roughness of a section of excircle matched with the inner hole of the free gear of the self-lubricating shaft after grinding is not lower than Ra0.8.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a unique design in structure realizes the oil storage, leads the self-lubricating process of oil, has avoided axle and empty sleeve gear because the lubricated not enough condition that leads to empty sleeve gear and axle locking of sliding friction. The utility model is an optimized design made for the prior design, which can not change the internal structure of the gear box; due to the simple structure, the realization is very easy, and the realization cost is very low.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the working state of the present invention.

Reference numbers indicate 1, an idler gear 2, and a self-lubricating shaft.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

In the present embodiment, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for convenience of describing the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 and 2, the self-lubricating shaft for the free gear comprises a self-lubricating shaft (2), wherein a section of excircle of the self-lubricating shaft (2) is in clearance fit with an inner hole of the free gear (1), a section of excircle of the self-lubricating shaft (2) matched with the inner hole of the free gear (1) is ground into a smooth surface, and meanwhile, a spiral ring groove is designed on the excircle of the self-lubricating shaft (2) and can play roles in oil storage and oil guide.

Preferably, the roughness of a section of excircle matched with the inner hole of the self-lubricating shaft (2) and the hollow gear (1) after grinding is not lower than Ra0.8.

During operation, idle gear (1) and axle have the rotational speed difference, and the lubricating oil in the spiral annular groove can flow along the one end of spiral annular groove from the axle to the other end under the relative motion of axle and idle gear (1), therefore lubricating oil can reach the whole fitting surface of idle gear (1) and axle to the mesh of self-lubricating has been realized.

Without being limited thereto, any changes or substitutions which are not thought of through creative efforts should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (2)

1. The utility model provides a self-lubricating axle for empty sleeve gear, includes self-lubricating axle (2), clearance fit is made with the hole of empty sleeve gear (1) to one section excircle of self-lubricating axle (2), its characterized in that, one section excircle of self-lubricating axle (2) and empty sleeve gear (1) hole matched with is through abrasive machining into bright and clean surface, and the spiral annular has been designed to the excircle of self-lubricating axle (2) simultaneously.

2. Self-lubricating shaft for idler gears according to claim 1 characterised in that the roughness of the section of the outer circle of the self-lubricating shaft (2) which fits the inner bore of the idler gear (1) is not less than Ra0.8 after grinding.

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