Body height control device and method for vehicle air spring suspension

Abstract

The present invention provides a vehicle body height control device and a method for the vehicle air spring suspension, which are low in cost, efficient and reliable. On the basis of the conventional air spring suspension height valve control structure, the original fixed-length mandrel connecting the swing arm of the height valve and the axle is replaced with a controllable length mandrel. The main body of the mandrel mechanism is a two-way cylinder, and the cylinder piston rod passes through The flexible connector connects the swing arm of the height valve. The piston divides the interior of the cylinder into two cavities. The two cavities of the cylinder are respectively provided with air ports, and the two cavities are respectively connected to the pneumatic passages in the two positions of the solenoid valve. The solenoid valve and the air source Connection, the solenoid valve is connected to the lift control device. The operator can remotely control the length of the ejector rod and change the position of the balance point of the height valve, so that the height valve can inflate and exhaust the air spring on demand until the body is raised and lowered to a new equilibrium state. The present invention can promote the air suspension. The development of the application of the rack system on the vehicle, especially the drop-and-trail vehicle.

Description

technical field [0001] The invention relates to the field of automobile air spring suspension systems, in particular to the field of vehicle body height control of the air spring suspension. Background technique [0002] The development of my country's logistics and transportation industry and the government's vigorous promotion of drop-and-hook transportation have made the domestic air suspension market that can realize vehicle height control have great room for development. However, domestically and even internationally, the only ECAS electronic control system from WABCO is the air suspension system vehicle height control technology, but it is expensive and difficult to debug and maintain. Although the height valve mechanical control system widely used in domestic vehicles equipped with air suspension has the advantages of low cost and simple structure, because the conventional height valve mechanical control system can only maintain the height of the vehicle body at a uni...

AI Technical Summary

Problems solved by technology

However, domestically and even internationally, the only ECAS electronic control system from WABCO is the air suspension system vehicle height control technology, but its price is high and it is difficult to debug and maintain.

Although the height valve mechanical control system widely used in domestic vehicles equipped with air suspension has the advantages of low cost and simple structure, because the conventional height valve mechanical control system can only maintain the height of the vehicle body at a unique set value, it cannot realize the height of the vehicle body. The lifting control function makes it impossible to realize the huge advantage of the air suspension system, which in turn restricts the promotion of the air suspension system on drop-and-hook transport vehicles

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