Crawler crane mast lifting hydraulic control system and method

The present invention discloses a crawler crane landing the mast and the hydraulic adjustment system control method for adjusting technical field belonging to the crawler crane, comprising a jack cylinder, balance, regulating the pump module, the hydraulic pump, a main controller and a luffing winch control system further comprising a main commutation module, a pressure sensor, an angle sensor and control switch; the main commutation module comprises a first solenoid valve, the second solenoid valve and relief valve. A secondary voltage regulator module will be integrated into the main valve group, the fewer the number of the valve block, the system configuration and simple piping arrangement, no separate control oil source, work is simple and reliable; low-pressure, high-pressure, low-voltage control method then reduce the lifting cylinder working pressure in the long stroke cylinder is bent to avoid the accidents; avoid lifting cylinder pressure overshoot is too large, bending the mast pulled the phenomenon, while the use of automatic control and reduce the intensity of work; using actuating control switch is operated in outdoors, more secure and reliable.