Side-arranged circumferential-embracing braked axle of motor truck

Abstract

The present invention provides a side-arranged circumferential-embracing braked axle of a motor truck. The axle comprises an axle shaft and a wheel hub, the inner side of the wheel hub is connected with a brake wheel synchronously running therewith, a circumferential-embracing brake shoe is arranged corresponding to the peripheral surface of the brake wheel, the brake shoe comprises a semi-arc left shoe piece and a semi-arc right shoe piece, a braking friction plate is disposed at an inner circumferential surface of each of the left shoe piece and the right shoe piece, the axle shaft is provided with a cam and swing arm embracing mechanism and a floating-type single axle mechanism, and one end of each of the left shoe piece and the right shoe piece is connected with the floating-type single axle mechanism while the other end is connected with the cam and swing arm embracing mechanism. The cam and swing arm embracing mechanism is arranged at one side of the brake shoe, so the effective braking area of the brake shoe is enlarged. With adoption of the floating-type single axle mechanism, the left shoe piece and the right shoe piece move in a uniformly-spaced manner in relative to the left shoe piece and the right shoe piece, so the working faces of the shoe pieces can simultaneously attach to the brake wheel for braking, the braking effect is improved, abrasion of the shoe pieces is reduced, and the braking life of the shoe pieces is prolonged.

Description

technical field [0001] The invention belongs to the technical field of vehicle axle braking, and in particular relates to a side-mounted circumferentially-clutching braking vehicle axle of a truck. Background technique [0002] Although the existing drum brakes of trucks have been improved for many times and their braking performance has been perfected, there is still a certain degree of heat dissipation after friction braking when braking or emergency braking under heavy loads or down long slopes. The problem is that it is easy to generate high temperature due to braking, and the brake drum is broken under the action of the external support force, which often leads to accidents of brake failure, which has become a major safety hazard in vehicle driving. In order to solve the above-mentioned existing problems, a circumferential locking braking structure and method have been proposed at present, but the existing circumferential locking braking devices are all arranged on the ...

AI Technical Summary

Problems solved by technology

[0002] Although the existing truck drum brakes have been improved many times and their braking performance has become more perfect, the brakes or Emergency braking, the heat dissipation after friction braking still has certain problems. It is easy to generate high temperature due to braking, and the brake drum is broken under the action of the external support force, which often leads to accidents of brake failure. major safety hazard

In order to solve the above-mentioned existing problems, a kind of circumferential braking structure and method has been proposed at present, but the existing circumferential braking devices are all arranged on the brake shoes, occupying the circumferential braking capacity of the brake shoes. area, and the fixed end adopts a fixed double-axis design so that the braking surface of the brake shoe cannot play a full contact braking effect, reducing the braking efficiency of the brake shoe, and the existing brake shoes are fixed with one end and two axes. When braking, the brake shoe rotates around a fixed point, and the braking surface gradually contacts with the outer peripheral surface of the brake wheel until finally a tight brake is formed, which causes uneven force on the brake shoe, resulting in uneven wear and consumption, and prolonged Decrease the braking time and affect the braking effect

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