Floating caliper disc center brake with automatic return mechanism

Abstract

The invention provides a floating caliper disc center brake with an automatic return mechanism, which comprises a center brake caliper body, a rocker arm shaft, a rocker arm, a sliding pin, a sliding pin bracket, a front brake shoe, a rear brake shoe, a center brake disc, a brake lifting pin assembly and a front friction block return spring, wherein the rocker arm shaft and the rocker arm are connected with the center brake caliper body; the sliding pin passes through the center brake caliper body; the front brake shoe and the rear brake shoe are arranged on the center brake caliper body; the center brake disc is positioned between the front brake shoe and the rear brake shoe; a compression spring is sleeved on the sliding pin between the rear end of the center brake caliper body and the sliding pin bracket; a limit plate extends out of the center brake caliper body; a gap adjustable stop screw is arranged on the limit plate; the rod end of the gap adjustable stop screw corresponds to the sliding pin bracket at the position of the compression spring; rectangular sealing rings are arranged at both ends of the sliding pin in the center brake caliper body; in an initial state, the gap adjustable stop screw is attached to the sliding pin bracket; and the gap adjustable stop screw and the sliding pin are coaxially arranged.

Description

technical field [0001] The invention relates to the technical field of automobile brakes, in particular to a floating caliper disc-type central brake with an automatic return mechanism. Background technique [0002] With the diversification of modern off-road vehicle equipment, the self-weight of the vehicle itself continues to increase, the safety requirements continue to increase, and the braking performance requirements of the vehicle are also getting higher and higher. At present, the failure of the parking brake caused by the dragging of the rear brake shoe of the central floating caliper disc central brake of off-road vehicles is prominent. How to improve the mean distance between failures of the parking brake is an important issue in the industry. The original parking brake comes with a return spring for the friction plate. After the parking brake is released, the rear friction plate cannot overcome the mechanical friction and torque between the caliper body and the s...

AI Technical Summary

Problems solved by technology

At present, the parking brake failure problem of the central floating caliper disc central brake of off-road vehicles is prominent due to the dragging of the rear brake shoe. How to improve the mean distance between failures of the parking brake is an important issue in the industry.

The original parking brake comes with a return spring for the friction plate. After the parking brake is released, the rear friction plate cannot overcome the mechanical friction and torque between the caliper body and the sliding pin, resulting in the rear friction plate clinging to the parking brake. The phenomenon of brake dragging occurs on the disc. The dragging directly causes the premature wear of the rear friction plate and increases the parking brake clearance. When the clearance increases beyond the automatic parking clearance adjustment range, the parking brake fails.

The average mileage between failures of existing brakes is 500Km, and the reliability is poor

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