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

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 p