The sudden interruption of operation of explosion-proof pneumatic cranes may be caused by power supply problems, electrical component failures, equipment overheating protection, abnormal control system, mechanical vibration or poor contact, brake system misoperation, damage to limit devices, environmental interference, etc. The following is a specific analysis:

Power supply issues: Power lines may have loose connections, aging circuits, or power overload problems, resulting in unstable or even interrupted currents. In addition, circuit breakers may trip due to overload or short circuit faults, and fuses may also melt due to current exceeding the rated value, causing power outages.

Electrical component failure: Electrical components such as switches, controllers, etc. may malfunction due to quality issues or improper installation, causing the crane to malfunction. For example, if the switch itself does not meet the quality standards or malfunctions due to technical errors during installation, the crane may not be able to close after work, which may lead to more serious problems.

Equipment overheating protection: Long term high-intensity work or high ambient temperature may cause internal components of the crane to overheat, triggering the power-off protection mechanism. At this point, the crane will stop running to prevent equipment damage.

Control system failure: The control system of the crane may experience power outages due to software or hardware malfunctions. For example, abnormal conditions in the display screen, buttons, wiring, etc. of the control system may affect the normal operation of the crane.

Mechanical vibration or poor contact: The vibration generated by the crane during operation may cause problems such as weak connection between the sliding iron and the guide rail, and weak engagement of the main contactor, leading to abnormal power supply or self-locking failure of the main contactor coil, resulting in power failure. In addition, poor local contact of the sliding rail may also cause instantaneous phase loss when the crane reaches a certain section of the sliding rail, resulting in power failure and self-locking failure of the main contactor coil.

Brake system malfunction: The brake is an important safety component of explosion-proof cranes, which has functions such as preventing suspended objects from falling and achieving parking. If the brake fails, such as insufficient braking force or sudden brake failure, it may cause unexpected situations during the operation of the crane, triggering the protection mechanism and resulting in power outage.

Damage to limit device: The limit device is an important safety protection device for cranes, used to prevent the crane from running beyond its limit. If the limit device is damaged, it may cause the crane to exceed the safe range during operation, triggering the protection mechanism and resulting in power outage. Although the damage to the limit does not significantly affect the operation of the lifting machinery, it poses a great safety hazard to the safety of the lifting machinery.

Environmental factors such as dust, temperature, humidity, etc. may also have an impact on the electrical equipment of the crane, resulting in inaccurate contact, phase to phase short circuits, indirect grounding of wires, and other faults, which can lead to power outages. For example, dust may agglomerate and precipitate around electrical equipment, damaging its insulation strength and causing electrical breakdown and short circuit accidents.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment