Use the overflow valve braking circuit, this circuit can achieve the hydraulic motor of the two sides to brake, and can play a buffer action. When reversing valve response to the median, it under the action of inertial into hydraulic pump, the enough high side of valve oil supply to the overflow valve, relief valve limits the impact pressure and make the motor brake, hydraulic pump can also through the low voltage side enough check valve from self-priming tank filling oil. With accumulator brake circuit, near its installed accumulator in and out of the oil hole, can achieve two-way brake for it. When reversing valve response to the median of the original motor oil into empty because motor pump and high pressure, the side of the accumulator for discharge of oil pump, on the other side of the accumulator can be provided for oil. Use normally closed style of the brake circuit, one of the primary circuit through two fluid explorers to brake valve control. Manual reversing valve on the left or right, the pressure oil explorers through fluid into the valve into the brake cylinder, to overcome the spring force to open the brake, make the motor work. When in manual reversing valve in the brake cylinder of the hydraulic oil by the hydraulic valve and manual reversing valve back to the fuel tank, to conduct a brake motor.