A structure for suppressing redundant degrees of freedom of planetary row floating parts

Abstract

The invention belongs to the field of mechanical transmission, and relates to a novel structure for inhibiting redundant freedom degree of a planet row floating piece. A plurality of gear teeth on anouter drum of a gearbox brake drum A in the structure are machined into a circular arc, the circular arc is in clearance fit with the gear teeth of a friction plate B, and the plurality of gear teethon both sides of the circular arc on the outer drum of the gearbox brake drum A are milled out according to the inner diameter of an addendum circle of the gear teeth in the gearbox brake drum to formgrooves; and a cylindrical pair is formed between the friction plate B and the outer drum of the gearbox brake drum A in the axial direction. The novel structure has the advantages that the redundantfreedom degree in the design of the planet row floating gear ring is inhibited, interference sources of unstable factors in the combining and separating process of the friction plate are reduced, andthe risk that the friction plate, the planet row floating gear ring, even a whole planet gearbox bearing and the like are damaged and lose efficacy due to burning of the friction plate is greatly reduced; and the reliability of the friction plate, the planet row floating piece and even the whole planet transmission equipment is improved.

Description

technical field [0001] The invention belongs to the field of mechanical transmission and relates to a new structure for suppressing redundant degrees of freedom of planetary row floating parts. Background technique [0002] Since there is often a floating ring gear design in planetary gearboxes, the ring gear is in a fully floating state during the meshing process without limiting any degrees of freedom; during braking, the meshing between the floating ring gear and the planetary gear is unstable , although the planetary gear and the sun gear are constrained, the floating of the floating ring gear and the friction plate on it is an important source of many unstable factors. Due to the structural design of the full floating ring gear, too many degrees of freedom are released, although Finally, it can rotate around the axial direction, but it is easy to be disturbed in other directions of the axial degree of freedom, resulting in instability in the friction plate bonding proce...

AI Technical Summary

Problems solved by technology

[0002] Since there is often a floating ring gear design in planetary gearboxes, the ring gear is in a fully floating state during the meshing process without limiting any degrees of freedom; during braking, the meshing between the floating ring gear and the planetary gear is unstable , although the planetary gear and the sun gear are constrained, the floating of the floating ring gear and the friction plate on it is an important source of many unstable factors. Due to the structural design of the full floating ring gear, too many degrees of freedom are released, although Finally, it can rotate around the axial direction, but it is easy to be disturbed in other directions of the axial degree of freedom, resulting in instability in the friction plate bonding process; this instability is very easy to cause friction plate burns and cracks in the tooth root when the working conditions are bad And other phenomena, which will cause the collapse of the braking process, resulting in the breakage of the friction piece teeth, the gear teeth and even the damage of the gear teeth on the ring gear.

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