Brake pump

Abstract

The invention discloses a brake pump. The brake pump is provided with a brake shell, an air chamber shell, a liquid storage tank and a push rod, wherein the brake shell is provided with a brake cavity, the brake cavity is provided with a movable brake piston, the air chamber shell is provided with an air chamber cavity, the brake shell is provided with a liquid outlet which is communicated with the brake cavity. The liquid storage tank is communicated with the brake cavity through a liquid inlet channel, the brake shell and the air chamber shell are fixed together through a connecting piece, the connecting piece is provided with a push rod through hole, and the push rod through hole is provided with a push rod. The left end of the push rod is connected with a brake piston, the right end ofthe push rod is connected with a base, the air chamber of the air chamber shell is provided with an elastomer, the elastomer divides the air chamber into a breathing chamber and an inflation chamber.The breathing chamber is provided with a breathing port, the inflation chamber is provided with an air inlet, the base is positioned on the left side of the elastomer, and the left end of the base isprovided with a return spring. The brake pump is safe to use, high in reliability, simple in structure, low in production cost and free of frequent maintenance.

Description

technical field [0001] The invention relates to a brake pump for a vehicle, in particular to a brake pump for a loader. Background technique [0002] Such as Figure 25 As shown, the existing brake pump includes a brake housing, an air chamber housing, a liquid storage tank, and a push rod. The brake housing is provided with a brake chamber, the brake chamber is equipped with a movable brake piston, and the air chamber housing The body is provided with an air chamber, the air chamber is equipped with a movable air chamber piston, the air chamber piston is equipped with a return spring, the brake housing is provided with a liquid outlet, and the liquid outlet and the liquid storage tank are connected to the brake chamber. , the brake housing and the air chamber housing are fixed together by a connecting piece, the connecting piece is provided with a push rod through hole, the push rod through hole is equipped with a push rod, one end of the push rod is connected to the brake ...

AI Technical Summary

Problems solved by technology

In addition, the air chamber shell is processed by stamping, which puts forward higher requirements for the accuracy of the inner wall of the air chamber cavity, otherwise it is difficult to ensure the smooth movement and good sealing of the air chamber piston

At the same time, due to the presence of high-pressure brake fluid in the brake chamber, and the poor sealing effect between the connecting piece of the existing brake pump and the brake housing, the existing brake pump often leaks brake fluid, requiring frequent maintenance and replacement parts , poor reliability and high maintenance cost

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