Control valve set having load maintaining function and buffering vibration-reducing function

Abstract

The invention discloses a control valve set having a load maintaining function and a buffering vibration-reducing function. The control valve set having the load maintaining function and the buffering vibration-reducing function comprises a supporting oil cylinder, a wheel track switching loop balance valve, a two-position four-way solenoid valve, a one-way throttling valve and an energy accumulator, wherein one end of a high-pressure chamber of the supporting oil cylinder is connected with a first oil way and a second oil way in parallel, the first oil way having the buffering vibration-reducing function is formed by the two-position four-way solenoid valve, the one-way throttling valve, the energy accumulator and the high-pressure chamber of the supporting oil cylinder, the high-pressure chamber of the supporting oil cylinder, the two-position four-way solenoid valve, the one-way throttling valve and the energy accumulator are connected through oil pipes in sequence, and the second oil way having the load protection function is formed by the high-pressure chamber of the supporting oil cylinder, the wheel track switching loop balance valve and a low-pressure chamber of the supporting oil cylinder. According to the control valve set having the load maintaining function and the buffering vibration-reducing function, the load maintaining effect and the buffering vibration-reducing effect are achieved when the supporting oil cylinder is influenced by uneven roads in the process of walking of a robot.

Description

technical field [0001] The invention relates to a control valve group with functions of load holding and shock absorbing. Background technique [0002] Since the working environment of emergency rescue engineering robots is relatively complex and may involve different terrains, there are two types of walking mechanisms used: crawler type and tire type. And because of this design, it has a serious technical problem: when using tires to drive, since the weight of the entire system will be fully borne by the four hydraulic cylinders for wheel-track switching, the robot will start to move when it is driving. The supporting hydraulic cylinder will inevitably produce a certain impact when driving. On the one hand, due to the limited space on the chassis, the traditional vehicle buffer mechanism cannot be used to buffer the impact load well; The oil-pneumatic suspension cylinder has brought great problems to the stability of the robot's walking. Contents of the invention [00...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the general buffer mechanism, which are relatively bulky, cannot be installed on construction machinery with a relatively compact structure, and do not have the load holding function, the present invention provides a control valve group with load holding and buffering and vibration reduction functions.

Images