Cab active vibration reduction method and system and engineering vehicle

Abstract

The invention discloses a cab active vibration reduction method and system and an engineering vehicle. The method comprises the steps that cushion and backrest vibration acceleration information and acorresponding vibration acceleration setting range are obtained, wherein the vibration acceleration information comprises a frequency peak value, pass frequency vibration and order tracking; whetherthe current cushion and backrest vibration acceleration is within the set range or not is judged; in response to the fact that the cushion and backrest vibration acceleration is not within the set range, an instruction is sent to control a proportional valve to be opened, and cushion and backrest air bag structures are inflated and deflated till the cushion and backrest vibration acceleration is adjusted to be within the set range; in the inflating process, pressure information of the cushion and the backrest air bags is obtained; in response to the fact that the pressure of the cushion and backrest air bags exceeds the corresponding upper limit values, an instruction is sent to control the proportional valve to be closed and stop inflating; in the inflating and deflating process, flow information of the cushion and the backrest air bags is obtained; and in response to the fact that the flow of the cushion and backrest air bags exceeds the corresponding limit values, an instruction issent to control reduction of the opening of the proportional valve.

Description

Technical field[0001]The invention belongs to the technical field of engineering machinery, and specifically relates to an active vibration reduction method and system for a cab and an engineering vehicle.Background technique[0002]At present, construction vehicles, including excavators, road rollers, skid steer loaders, graders, etc., are widely used in construction sites such as construction, roads, mines, ports, etc. The road surface and working environment of the work site are relatively harsh. Accompanied by huge instantaneous impact, low-frequency vibration and shaking are generated. As the group of construction machinery drivers continues to expand, their requirements for the working environment are also increasing, which places higher requirements on the vibration comfort of the cab.[0003]Due to the diversity and uncertainty of construction operations, the comfort of the cab will also change. During the long-term operation of the driver, the vibration that exceeds the limit w...

AI Technical Summary

Problems solved by technology

[0005] The existing technology has the following defects: the existing mechanical damping system can only provide basic damping, and the height needs to be adjusted manually, which is time-consuming and laborious. The existing airbag damping seat is limited to height adjustment, and there is no adjustable seat softness and hardness. function, it is impossible to adjust the softness and hardness of the seat according to the real-time vibration situation, and to carry out active control so as to adapt to different road conditions. Provides a more comfortable working environment for drivers who work for a long time

[0006] Although there is an active control damping system in the prior art, it only alleviates driver fatigue through vibrating components, and does not fundamentally solve the problem of uncomfortable vibration of engineering vehicles

Images