Electric control device of air chamber for air suspension follow-up bridge and control method

Abstract

The invention discloses an air suspending following-up axle gasbag electrical control device and the controlling method, relating to the field of the improvement of the control device of the largetonnage multiaxial lorry air suspending following-up axle gasbag and the control method. The system mainly comprises a 5-speed gasbag control switch, a controller, a sensor, a solenoid valve, and a two-position three-way execution solenoid valve. Maintain the various pressure ratings of the gasbag to control the loading of the air suspending following-up axle. Two solenoid valves control the inflation and deflation to maintain the pressure. The pressure rating is sampled by fine pneumatic sensor. The braking function is realized by a two-position three-way execution solenoid valve at the high gear where the driving wheel is likely to slip. The air suspending following-up axle gasbag electrical control device has the technical advantages that the air suspending following-up axle gasbag pressure can be adjusted according to the loading of the whole lorry in time, and thus adjusts the loading distribution of the suspending following-up axle. Meanwhile, braking function is realized at the high gear where the driving wheel is likely to slip. The whole operation process is finished in the closed cab, thus improving the controllability and the reliability.

Description

technical field

[0001] The invention belongs to the technical field of automobile component design, and relates to the improvement of an electric control device and a control method of an airbag for an air-suspended follower bridge of a large-tonnage multi-axle truck. Background technique

[0002] At present, the electrical control device for the airbag of the air suspension follower bridge of the large-tonnage truck in China generally adopts a single-speed switch to control a two-position four-way solenoid valve, and realizes the lifting and closing of the air suspension bridge by inflating and deflating the airbag. Falling, not bearing the load when raised, bearing the load when falling.

[0003] The disadvantage of this technology is that the load change of the air-suspension follower bridge is only in two states of no-load and full-load. When the vehicle is driving on a slippery road or the driving wheel falls into a pit, etc., the ground clearance of the center of the f...

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