Constant-pressure exhaust braking method and low-cost constant-pressure exhaust braking butterfly valve

Abstract

The invention discloses a constant-pressure exhaust braking method. The method comprises the steps of arranging a valve, arranging a rotary shaft to penetrate through the valve, fixing a valve sheet on the rotary shaft, arranging a gas inlet on the valve sheet, and fixing a constant-pressure exhaust component at the gas inlet; fixing the valve on a mounting plate, fixing the tail end of a cylinder on the mounting plate, fixing a swing arm at the top end of the rotary shaft, and hinging the tail end of an output shaft of the cylinder with the tail end of the swing arm; and fixing the valve at an exhaust port of a motor. When the motor is required to be braked, the rotary shaft is driven by the cylinder, and an exhaust pipe is sealed by the valve sheet, so that back pressure is produced by the motor exhaust, the constant-pressure exhaust component is opened due to gas pressure when the back pressure reaches a set constant-pressure value, and when the back pressure is lower than the set constant-pressure value, the constant-pressure exhaust component is closed, the constant-pressure exhaust component is controlled by the back pressure to be closed and opened repeatedly, and automatic constant-pressure exhaust is achieved. The invention further discloses a low-cost constant-pressure exhaust braking butterfly valve.

Description

technical field [0001] The invention relates to an exhaust butterfly valve, in particular to a constant pressure exhaust braking method and a low-cost constant pressure exhaust braking butterfly valve implementing the method. Background technique [0002] The exhaust brake is an auxiliary braking device for vehicles. It can control the vehicle within a certain safe speed range without using or using less traditional friction brakes, prevent vehicle brake failure, and ensure driving safety. Pneumatic brake butterfly valve is a kind of vehicle auxiliary braking device. [0003] The existing constant pressure exhaust brake butterfly valve has a complex structure, and the design is not reasonable and perfect, the sealing performance of the product is not good, and the pressure relief is not sensitive enough, which often leads to insufficient constant back pressure, which affects the braking effect, and the structure is too complicated , leading to difficulties in maintenance an...

AI Technical Summary

Problems solved by technology

[0003] The existing constant pressure exhaust brake butterfly valve has a complex structure, and the design is not reasonable and perfect, the sealing performance of the product is not good, and the pressure relief is not sensitive enough, which often leads to insufficient constant back pressure, which affects the braking effect, and the structure is too complicated , leading to difficulties in maintenance and affecting work efficiency

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