Operation and Maintenance of Explosion-Proof Cranes

The explosion-proof hoist bridge crane, commonly referred to as the “explosion-proof crane,” is a double-girder bridge crane that uses an explosion-proof electric hoist as its lifting mechanism. It features a rational structure, an aesthetically pleasing appearance, and strong explosion-proof performance. The explosion-proof crane is designed for use with a specific type of explosion-proof electric hoist, with a lifting capacity ranging from 1 to 10 tonnes, a span from 7.5 to 22.5 meters, a service class of A3–A5, and an operating ambient temperature range of –25°C to +40°C.

Advantages: mature and reliable technology, simple structure, compact size, lightweight, and easy installation, operation, and maintenance.

Explosion-proof crane

Environmental conditions: The operating power supply is three-phase AC, with a rated frequency of 50 Hz and a rated voltage of 380 V; the ambient operating temperature range is –20 to 40°C. For indoor operation at 40°C, the relative humidity shall not exceed 50%; for outdoor operation at 25°C, the relative humidity may temporarily reach up to 100%.

Application scenarios: The equipment shall be installed and operated at altitudes not exceeding 2,000 meters. It is suitable for maintenance and handling operations in mechanical workshops, warehouses, material yards, and hydropower stations under medium- to light-duty service conditions, and is a lifting device widely promoted for domestic use.

Operation and Maintenance of Explosion-Proof Cranes:

1. Operators of explosion-proof cranes shall receive training and guidance, acquire a thorough understanding of the crane’s structure and performance, and gain experience in its operation and maintenance, so that they can operate and maintain the equipment in accordance with the manufacturer’s instructions, which constitute the fundamental documentation for operating the equipment.

2. Before operating the machine, you must first read and follow the maintenance instructions, then operate and maintain it in accordance with the manual.

2. Pay attention to the operating load during the break-in period: the workload during operation should not exceed 80% of the rated load, and an appropriate workload should be scheduled to prevent overheating caused by prolonged continuous operation.

3. Regularly monitor instrument readings; if any abnormalities are detected, immediately stop the operation and investigate the cause. Do not resume operation until the root cause has been identified and the fault has been rectified.

4. Pay attention to regularly inspecting the oil, hydraulic fluid, brake fluid, and the levels and quality of oil (and water); check the sealing condition of the entire machine; if oil or water levels are found to be low, identify the root cause and simultaneously enhance lubrication at all lubrication points. It is recommended that, during the break-in period, grease be applied to all lubrication points at each shift (unless otherwise specified).