Commercial vehicle seat buffer device

Abstract

The invention relates to the field of commercial vehicles, in particular to a commercial vehicle seat buffer device which comprises a cushion frame, a cushion frame beam, a rocker arm, a lifting hydraulic cylinder, a seat base beam, a seat base and a buffer hydraulic cylinder. One end of the buffer hydraulic cylinder is arranged on a suspension, the other end of the buffer hydraulic cylinder is connected with a vehicle body girder, upper cylinder bodies are respectively arranged at one ends of the lifting hydraulic cylinder and the buffer hydraulic cylinder where piston rods penetrate through, and lower cylinder bodies are arranged at the other ends. Hydraulic oil is filled in the upper cylinder bodies and the lower cylinder bodies of the lifting hydraulic cylinder and the buffer hydraulic cylinder, the lower cylinder body of the lifting hydraulic cylinder is connected with the upper cylinder body of the buffer hydraulic cylinder through an oil pipe, and the upper cylinder body of the lifting hydraulic cylinder is connected with the lower cylinder body of the buffer hydraulic cylinder through an oil pipe. Small oil flow holes on other shock absorbers are not arranged on the buffer hydraulic cylinder, the lifting hydraulic cylinder used for adjusting seat height and the buffer hydraulic cylinder are connected to act in the same direction, therefore influence of automobile bumping on seats is eliminated and the vehicle riding comfort degree is improved.

Description

technical field [0001] The invention relates to the field of commercial vehicles, in particular to a commercial vehicle seat. Background technique [0002] The performance of commercial vehicles usually needs to take into account the factors of both the cargo and the seat, so it is difficult to achieve the requirements, especially for low-cost commercial vehicles, which require greater suspension stiffness if they need to be loaded , and the seat occupants will have requirements for comfort, and the suspension buffer structure that can take into account these two points will be very expensive; most of the existing commercial vehicle seat frames are directly fixed and installed on the floor of the compartment. The cushioning of the chair is realized by the shock absorber in the suspension system, and the seat itself is at most only provided with some cushioning pads. The comfort of this seat is relatively poor, and passengers complain more. Contents of the invention [000...

AI Technical Summary

Problems solved by technology

[0002] The performance of commercial vehicles usually needs to take into account the factors of both the cargo and the seat, so it is difficult to achieve the requirements, especially for low-cost commercial vehicles, which require greater suspension stiffness if they need to be loaded , and the seat occupants will have requirements for comfort, and the suspension buffer structure that can take into account these two points will be very expensive; most of the existing commercial vehicle seat frames are directly fixed and installed on the floor of the compartment. The cushioning of the chair is achieved by using the shock absorber in the suspension system, and the seat itself is at most only provided with some cushions. This kind of seat is less comfortable, and passengers complain more.

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