Suspension assembly of van carriage with flexible structure

Abstract

The invention relates to a suspension assembly of a van carriage with a flexible structure. The assembly comprises a sub-frame of the van carriage, a chassis main frame, upper and lower vibration-damping suspension mechanisms and a U-shaped bolt used for connection. The assembly is characterized in that the upper vibration-damping suspension mechanism is arranged between the sub-frame and the main frame, the lower vibration-damping suspension mechanism is arranged under the main frame, and the U-shaped bolt penetrating from top to bottom connects the sub-frame, the upper vibration-damping suspension mechanism, the main frame and the lower vibration-damping suspension mechanism through threads to form the suspension assembly of the van carriage. The assembly has the advantages that the flexible suspension assembly is used for the van carriage assembly, vibration caused by unevenness of a road is effectively prevented from being transmitted to the van carriage, and the reliability, the transportation safety and the use economy of the load-carrying van carriage are improved.

Description

technical field [0001] The invention belongs to motor vehicles, in particular to a suspension assembly of a van-type carriage body with a flexible structure. Background technique [0002] The van body suspension system refers to the assembly structure used to reduce and control the vibration transmission of the van body and play a supporting role. [0003] At present, van vehicles mainly have several structural forms such as van type, square cabin type, container type, and platform type. There are four types of connection and other connection methods, all of which are basically rigid connection structures. The number of vans using U-bolt connection is the largest, and most vans use U-bolt connection. For a long time, the design of these suspension connection structures mainly focused on the structural strength, while the matching design of the suspension structure aimed at suppressing vibration transmission was less. The connection structure between the vehicle sub-frame ...

AI Technical Summary

Problems solved by technology

[0004] Studies have shown that: U-shaped bolts are used for rigid connection, the vibration of the excitation source is not attenuated, and it is directly transmitted to the car body through the main frame, and the frame will produce large displacement and deformation under torsional load or when the vehicle is turning or emergency braking. , may cause relative displacement between the car body and the chassis, seriously affecting the reliability of the connection structure

Unreasonable modification of the connection structure can deteriorate the stress distribution of the structure, and may also cause resonance during the driving process of the vehicle, which will easily cause the vehicle structure to fail and affect the safety and reliability of the vehicle.

In addition, the rigid suspension leads to high vibration intensity of the car body, and some carrying equipment with high requirements on the vibration environment need to take vibration isolation measures separately, which will cause a lot of waste of carrying space and increase the carrying cost

Due to the small space between the main frame and the sub-frame of the chassis, using a common spring damping structure to achieve the damping effect will greatly increase the height of the center of gravity of the car body and increase the safety hazards of the vehicle during driving.

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