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Heavy-duty car motor drive air braking system and braking method

A motor-driven, pneumatic braking technology, applied in the direction of brake transmission, brakes, vehicle components, etc., can solve the problems of high cost and complex hardware, and achieve the effect of long service life, safe braking and compact structure

Inactive Publication Date: 2016-06-22
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The electromechanical braking system can reduce the response time of the braking system very well, but for heavy vehicles, adding an electromechanical braking system to each wheel will cause unnecessary waste such as high cost and complicated hardware

Method used

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  • Heavy-duty car motor drive air braking system and braking method

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] The realization principle of the present invention: comprises air reservoir, the drive mechanism that pushes the piston rod in the gas reservoir, ECU control unit and the speed sensor that monitors the running state of automobile and train, brake pedal opening sensor. The air storage tank is provided with a piston, an air outlet, an air inlet and a pressure sensor. The piston is fed by the push rod force of the driving mechanism, the air outlet is connected to the brake wheel cylinder, and the air inlet is connected to the air pressure pipeline. When the brake command is received, the air inlet is closed, the air outlet is opened, the piston pushes the air pressure forward to the brake wheel cylinder, the brake wheel cylinder brake pressure is monitored by the pressure sensor and fed back to the ECU control unit, and the ECU co...

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Abstract

The invention discloses a heavy-duty car motor drive air braking system and a braking method. The system comprises a control mechanism, a power mechanism and a transmission mechanism. The power mechanism comprises a motor and a torque amplifying mechanism. The transmission mechanism comprises a lead screw, a lead screw nut arranged on the lead screw in a sleeving manner, a piston rod connected with a piston arranged in an air storage barrel and an elastic structure clamped between the lead screw nut and a shell. An air inlet and an air outlet of the air storage barrel are connected with an air pressure pipeline and a braking wheel cylinder. According to the braking principle, the information of the car speed and the opening degree of a braking pedal is collected, reasonable braking force distribution is worked out through the control mechanism, the rotating speed of the motor is controlled by outputting and controlling the voltage of the motor, then pressure in the air storage barrel is controlled through the transmission mechanism to control the braking pressure of the braking wheel cylinder, and in the braking process, the pressure in the air storage barrel is collected in real time, and the braking force is controlled in real time. By means of coupling of motor transmission and the elastic mechanism, the braking force of a trailer is adjusted in real time, and the defect that trailer braking is later than tractor braking is overcome.

Description

technical field [0001] The invention relates to the technical field of braking of heavy-duty equipment transport vehicles, in particular to a heavy-duty vehicle motor-driven air pressure braking system. Background technique [0002] Because of the functions of "section transportation" and "drop and pull transportation", heavy equipment transport vehicles have become an important means to improve the efficiency of road transportation, and have been paid more and more attention. But braking safety is a major hidden danger of automobile trains always. Most trailers and tractors use pneumatic brakes. The generation and removal of air pressure in the pipeline in the pneumatic brake system is slow, and the action lag time is long (0.3-0.9s); the working pressure of the pipeline is low, so the trailer braking The system generally has a series of problems such as low braking efficiency, slow braking response, and long braking fading time, and because the braking response time of th...

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Application Information

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IPC IPC(8): B60T13/74B60T13/66
CPCB60T13/66B60T13/74
Inventor 张龙飞陈龙袁朝春申小敏王琨王潍
Owner JIANGSU UNIV
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