Explosion-proof electric hoist It is a light and small lifting equipment. Explosion-proof electric hoists are characterized by their heavy weight, small size, and large lifting capacity. In factories filled with explosive mixtures, they improve working conditions and increase labor productivity while ensuring safety, making them indispensable mechanical equipment in production.

　　What is the common sense of lubrication for explosion-proof electric hoists?

　　1. The lubrication method for the lifting reducer is to inject it from the self-injection port, using 50# machine oil. Lubrication every six months is recommended.

　　2. The lubrication method for the operating reducer is to inject it from the self-injection port, using 50# machine oil. Lubricate once every six months.

　　3. The lubrication method for the wire rope and rollers is surface application, using wire rope oil. Lubricate once a week.

　　4. The lubrication method for the hook sheave bearing/wheel is to squeeze in lubricating oil, using calcium-based lubricating oil. Lubricate once every six months.

　　5. The lubrication method for the lifting and operating motors is to apply calcium, sodium, and grease lubricating oil. Apply every six months.

　　What are the structural characteristics of explosion-proof electric hoists?

　　1. Explosion-proof electric hoists are composed of multiple separately detachable parts, making them very convenient for use, maintenance, and servicing, shortening the maintenance cycle.

　　2. The explosion-proof motor and explosion-proof control box have separate explosion-proof structures. The control buttons, limit switches, and explosion-proof weight limiters all meet the corresponding explosion-proof requirements.

　　3. Parts are universal and highly compatible.

　　4. The reducer uses standard modulus cylindrical gears, making it easy to maintain.

　　 Explosion-proof electric hoist What is the pre-factory inspection?

　　What is the factory inspection?

　　1. All explosion-proof foils should be factory inspected and pass the test requirements (including user-specific inspection and test items) before leaving the factory.

　　Factory products should be accompanied by a product qualification certificate.

　　2. During the inspection of explosion-proof hoists, check whether the selected explosion-proof electrical equipment has an "explosion-proof certificate". Verify the explosion-proof electrical equipment according to the explosion-proof hoist design drawings.

　　Confirm the model, grade, and temperature group of the equipment, and confirm the accuracy of the installation.

　　Confirm the performance record files of 3, 6.3 to 6.5, 9.1, and 9.2.

　　4. Other inspection contents should be inspected according to the inspection items of JB/T 5317 or JB/T 9008.2.

　　What are the explosion-proof key points?

　　1. The electrical components of the electric hoist, including the lifting and operating motors, control box, control buttons, and limiters, all use self-contained explosion-proof equipment.

　　2. Use a soft cable power input device.

　　3. Explosion-proof measures are taken for mechanical components to prevent high-temperature sparks from being generated by friction and impact during the operation of the electric hoist, and relevant components are processed.

　　(1) Inject an appropriate amount of machine oil into the lifting and running reducers.

　　(2) Apply lubricating grease to the drum and wire rope.

　　(3) The left and right stop blocks and limit of the limit rod are made of bronze or stainless steel.

　　4. The surface temperature of the electric hoist during normal operation does not exceed 110°.