A drum brake with long service life and good safety performance

Abstract

The invention relates to the technical field of automobile braking, and discloses a novel drum brake with high service life and good safety performance. The novel drum brake comprises a chassis, wherein an insertion shaft opening is formed in the front surface of the chassis, eight fixing holes are formed in the front surface of the chassis and located outside the insertion shaft opening, and limiting plates which are respectively positioned on the left side and the right side of the insertion shaft opening are fixedly arranged on the front surface of the bottom plate. According to the novel drum brake with high service life and good safety performance, a brake grinding piece cannot be directly pushed by a brake wheel cylinder for braking when the brake grinding piece is braked, the smalldeflection angle is generated, the inner ring of a wheel can be better adapted to the inner ring of the wheel, the brake is attached to the inner ring of the wheel, and the abrasion of the brake grinding piece is more uniform after being braked for a plurality of times, the abrasion part cannot deviate, and the service life of the brake grinding piece is prolonged; meanwhile, due to the fact thatthe brake grinding piece is more attached, the braking performance is guaranteed, and the driving safety of a driver is guaranteed; and meanwhile, the service life of the drum brake is further prolonged, and the replacement and maintenance cost of a user is reduced.

Description

technical field [0001] The invention relates to the technical field of automobile brakes, in particular to a drum brake with long service life and good safety performance. Background technique [0002] Drum brakes have been used in automobiles for nearly a century, but due to their reliability and powerful braking force, drum brakes are still configured on many models today. They are fixed to the tires and rotate at the same speed. When braking Use oil pressure to push the brake shoe to contact the inner edge of the brake drum, and use the friction generated by the contact to restrain the rotation of the tire to achieve the purpose of braking. The drum brake is composed of the brake base plate, brake cylinder, brake shoe, etc. , pins, and brake drums are generally installed on the rear wheels at present. The cost of drum brakes is lower and the absolute braking force is higher. The inner surface of the brake drum of the drum brake is the position where the brake device gener...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a drum brake with high service life and good safety performance, which has the advantages of long service life, etc., and solves the problem that the traditional drum brake directly brakes through the brake wheel cylinder when braking. The hoof is used to brake the inner ring of the tire by friction. Since the outer grinding disc is in an arc shape, the worn part of the grinding disc will shift after repeated braking, resulting in uneven wear and affecting the braking performance of the drum brake. issues with service life

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