In order to ensure the safety and reliability of the lifting operation, the crane is equipped with relatively complete safety devices to protect the machine parts or remind the operator to pay attention in case of accidents, thus playing a safety protection role.

1. Each relief valve in the hydraulic system: can suppress abnormal high pressure in the circuit to prevent damage to the hydraulic oil pump and motor, and prevent overload status.
2. Boom luffing safety device: When an accident occurs and the high-pressure hose or oil pipe in the boom luffing cylinder circuit bursts or is cut off, the balance valve in the hydraulic circuit will take effect and lock the work from the lower chamber of the cylinder. Oil prevents the boom from falling, thereby ensuring the safety of the operation.​
3. Boom telescopic safety device: When an accident occurs and the high-pressure hose or oil pipe in the boom telescopic cylinder circuit bursts or is cut off, the balance valve in the hydraulic circuit will take effect and lock the working oil from the lower chamber of the cylinder. The crane will retract on its own to ensure the safety of the operation.
4. Height limit device: After the hook is raised to the specified height, touch the limit weight, turn on the travel switch, the “overpass” indicator light will light up, and at the same time cut off the hook lifting, boom arm extension, and hoisting. The operation of arm folding and other movements ensures safety. At this time, as long as the handle is operated such as lowering the hook, retracting the boom, or raising the boom (that is, operating in a safe direction), the limit weight will be released, and the operation will return to normal. In special occasions, if you still need to perform a small amount of bypass operation, you can press the release button on the instrument box. At this time, the limit function will be released. However, the operation must be very cautious at this time to prevent accidents.
5. Outrigger locking device: When an accident occurs and the high-pressure hose or oil pipe leading to the outrigger vertical cylinder is broken or cut, the two-way hydraulic lock in the hydraulic system can block the pressure oil in the two chambers of the outrigger sealing cylinder, causing the outrigger to collapse. The legs will not shrink or throw out, thus ensuring the safety of lifting operations.
6. Lifting weight indicator: The lifting weight indicator is set on the side of the basic arm (that is, the right side of the control room). The operator can clearly observe it while sitting in the control room, and can accurately indicate the lifting capacity of the boom. Elevation angle and the rated lifting capacity allowed by the crane under corresponding working conditions.
7. Lifting characteristics table: Set on the front lower wall panel of the control room, this table lists the rated lifting weight and lifting height under various arm lengths and various working ranges for easy reference during operation. When lifting, do not exceed the values specified in the table. In order to ensure the safety and reliability of the lifting operation, the crane is equipped with relatively complete safety devices to protect the machine parts or remind the operator to pay attention in case of accidents, thus playing a safety protection role.