Brake device adopting anti-attrition mechanism of axial floating spline

Abstract

The invention discloses a brake device adopting an anti-attrition mechanism of an axial floating spline, relates to the technical field of mechanical braking, and solves the problem that an inner spline of a brake disc of a helicopter is prone to abrasion due to the action of unbalance loading and an impact load. The anti-attrition mechanism comprises at least two installation grooves formed in an inner hole of the brake disc, and of an annular structure, and at least two supporting pieces matched with the installation grooves, the supporting pieces are embedded into the installation grooves, the supporting pieces protrude out of the installation grooves, the deflection amount of the spline is reduced by additionally arranging centering supports at the two ends of the spline, and therefore the unbalance loading is reduced, and the effect of reducing the abrasion is achieved, mainly, the supporting pieces and the installation groove structures of the supporting pieces are additionally arranged at the two ends of the spline in the brake disc; the supporting pieces are made of abrasion-resistant and corrosion-resistant high-density plastic, so that the problem that the spline of the brake disc is prone to abrasion is solved, and meanwhile, the weight is not increased; and the supporting pieces are provided with openings, so that installation is facilitated.

Description

technical field [0001] The invention relates to the technical field of mechanical brakes, in particular to a brake device using an axial floating spline wear-reducing mechanism. Background technique [0002] The helicopter brake disc is connected to the tail output shaft of the main reducer by an axial floating spline. Due to the design of the large backlash of the spline and no axial positioning, the brake disc has a large unbalanced load and axial sliding during braking. At the same time There is an impact load at the moment of the braking action. Under the joint action of eccentric load, axial sliding and impact load, the wear of the spline pair is aggravated, resulting in the serious wear of the splines in the helicopter brake flange, which makes the helicopter use Frequent replacement of brake discs during the process will greatly increase the cost of helicopter use and maintenance. [0003] At present, the common technical means to reduce the wear of the spline pair i...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned technical problems in the background technology, a wear-reducing technology that adds supports at both ends of the inner spline of the axially floating brake disc is proposed, which solves the problems of the inner spline of the helicopter brake disc due to unbalanced load and impact load. The problem of easy wear and tear has significantly improved the service life of the brake disc with internal splines and axial floating; at the same time, it also takes into account the easy disassembly requirements of the main reducer when the brake splines are inspected or replaced, and solves the problem of brake disc spline wear. At the same time, it has good external maintenance. In order to achieve the above purpose, the patent of the present invention mainly relates to the design of the anti-friction structure of the axial floating spline

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