Crane hydraulic control system and crane

A crane hydraulic control system, comprising:

• a prime mover (1), for driving a crane to run;
• an execution control mechanism, for controlling an actuator of the crane to execute an operation;
• a hydraulic energy conversion device (3), having a state of power connection with the prime mover (1), and comprising a pump motor (31) switchable between a pump work condition and a motor work condition, the pump motor (31) is provided with a first work port (A) connected with an oil tank (7) in an on-off mode and a second work port (B) connected with the execution control mechanism in an on-off mode;
• an operation energy recycling device, comprising a first energy accumulator (51) connected with the first work port (A) in an on-off mode, and cooperating with the hydraulic energy conversion device (3) to convert gravitational potential energy in a load lowing operation process executed by the actuator into hydraulic energy and store the hydraulic energy in the first energy accumulator (51), so as to achieve an operation energy recovery function, during which the pump motor (31) is in the motor work condition, the first work port (A) is communicated with the first energy accumulator (51), an oil passage from the first work port (A) to the oil tank (7) is disconnected, and the second work port (B) is communicated with the execution control mechanism and is disconnected from the second energy accumulator (61);
• and
• a running energy recycling device, comprising a second energy accumulator (61) connected with the second work port (B) in an on-off mode, and cooperating with the hydraulic energy conversion device (3) to convert mechanical energy in the braking process of the crane into hydraulic energy and store the hydraulic energy in the second energy accumulator (61), so as to achieve a driving energy recovery function, during which the pump motor (31) is in the pump work condition, the first work port (A) is communicated with the oil tank (7), and the second work port (B) is communicated with the second energy accumulator (61) and is disconnected from the execution control mechanism.