Parallel split type worm and gear sealing structure with independent oil inlet holes

Abstract

The invention provides a parallel split type worm and gear sealing structure with independent oil inlet holes. The sealing structure for the worm and gear meshing region includes a gear rim seal, a worm axial seal, a worm end face seal and a worm radial seal, and is used for controlling oil leakage and guaranteeing pressure of lubricating oil at the meshing region so as to reduce contact between the meshing surfaces, reduce the friction coefficient and improve transmission efficiency. A plurality of independent oil inlet holes are distributed on a seal block of the worm axial seal along the worm axis. Cooling strength and temperature rise of various sections from the meshing-in end to the meshing-out end can be controlled by controlling position, temperature and flow of lubricating oil entering the meshing region, and accordingly heat expansion difference between a gear and the worm, among teeth of the gear and among teeth of the worm can be controlled and loads of different meshing teeth are equalized.

Description

technical field [0001] The invention relates to the technical field of worm gears, in particular to a worm gear sealing structure with parallel split independent oil inlet holes. Background technique [0002] The worm gear is a well-known basic transmission mechanism. The usual worm gear has the advantages of large speed ratio, simple structure or compact structure. The relative sliding speed between the meshing surfaces of the worm is fast, and the lubricating oil driven by the rotation of the worm has a strong centrifugal effect, which makes the condition for the formation of the oil film in the meshing area poor, and the oil churning loss of the worm causes serious wear and tear of the worm transmission, high heat generation and transmission Low efficiency and other shortcomings. In the existing transmission technology of worm gears, except for ZL200710035077.2 which proposes the concept of sealing the meshing area, none of the others have sealed the meshing area. Howev...

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Problems solved by technology

However, ZL200710035077.2 does not involve the design of the oil supply hole, and it cannot control the temperature rise of each meshing section of the worm gear and worm pair from meshing in to meshing out, and cannot control the thermal expansion of the worm and the corresponding section of the worm wheel, causing working conditions The pitch error and cumulative pitch error of the lower teeth make it difficult to effectively control the meshing state of the large modulus worm gear

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