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Installation steps of wire rope hoists

The wire rope electric hoist is a small lifting equipment. The wire rope electric hoist has the advantages of compact structure, light weight, small size, strong versatility of parts, and convenient operation. Wire rope electric hoist installation is an important step before use. On the basis of understanding the operating instructions of the wire rope electric hoist, please also pay attention to the following items: 1. Please memorise the contents of the instruction manual and the nameplate before operating. 2. Please adjust the upper and lower limit stop blocks before lifting the object. 3. Please confirm whether the brake condition is reliable before use. 4. If the wire rope of the wire rope hoist is found to have the abnormal conditions (bending, deformation, corrosion, etc) before use, never operate it. 5. The degree of fracture of the wire rope exceeds the specified requirements, and the amount of wear is large. 6. Please use a 500 V megger to check the insulation resistance of the motor and the control box before installation and use. The cold resistance at room temperature should be greater than 5 MΩ before use. 7. Please never use the wire rope electric chain hoist to lift objects...

Bridge Crane and Gantry Crane Overhaul of Oil Leakage of Reducer

Bridge crane and gantry crane are our main product, and the overhaul of oil leakage of reducer of gantry crane and bridge crane is very important. Check measures to prevent oil spills of bridge crane and gantry crane. And some other answers to frequently asked questions about bridge and door cranes. Overhaul of Oil Leakage of Reducer of Gantry Crane and Bridge Crane Maintenance of oil leakage ① The oil leakage of the reducer usually occurs in the following places: a. The joint surface of the reducer box is especially serious for the vertical reducer. b. The shaft end cover of each shaft of the reducer, especially the shaft hole of the through cover. c. The flat cover of the observation hole. ②Analysis of the causes of oil leakage: a. The joint surface of the box body is processed rough, and the joint is not tight. b. The box is deformed, and the joint surface and the bearing hole change accordingly, forming a gap. c. The gap between the bearing cover and the bearing hole is too large, the oil return channel in the through cover is blocked, and the sealing ring of the shaft and the through cover is aging and...

How to Increase the Service Life of a Single Girder Crane?

The many advantages of single girder cranes make them widely used in various industries, reduce labour intensity, and greatly reduce the difficulty of work. However, due to differences in operation and maintenance, the service life of single-girder cranes will also vary. So how can we prolong the service life of the single girder crane? If the service life of the single girder cranes can be increased, the capital investment and asset cost of the enterprise can be saved. In order to increase the service life of the single beam crane, we should pay more attention to the following aspects: Do a good job in the lubrication and maintenance of the single beam crane. During the operation of the equipment, if the grease cannot be supplied, it will damage the equipment and reduce the service life if it is operated again. Lubricating positions include: rolling bearings, hook rollers, fixed rollers, and other rolling bearings, gear couplings, braking systems and their computer operating systems, reducer gear shafts, and core movable pins of galvanized steel wire ropes. Check the tightening position frequently. If the anchor screws and nuts are loose, it is easy to cause a safety accident that damages the human body....

Gantry Cranes: the Use of Precautions and How to Maintain

Gantry cranes are common industrial lifting equipment with a high site utilization rate. Gantry cranes are also called frame cranes or portal cranes, which are divided into single girder gantry cranes and double girder gantry cranes. They have a large working range, wide applications, and strong versatility. A gantry crane is indispensable lifting equipment for port freight yards. Gantry cranes must be operated by professionals. Pay attention to safety during the operation. Next, we will give you a detailed introduction to how to properly maintain the single girder gantry crane and double girder gantry crane, and what the precautions are for use. How to properly maintain the single girder gantry crane and double girder gantry crane The main metal structure and main parts of the single girder and double girder gantry cranes can be inspected. Check whether there are welding cracks in the connecting welds and whether the main beam has residual deformation and instability. If problems are found, operations should be halted and corrected. When we inspect the single girder gantry crane and double girder gantry crane parts, we should pay attention to whether there is dirt or wear and tear. The wire rope should be lubricated regularly, and...

How to Install Air Hoists and the Common Faults of Air Hoists

Pneumatic hoists are used in a wide range of fields. Air hoists are very popular in the automobile beauty industry, the motorcycle manufacturing industry, the petroleum industry, and other industries. Because of the advantages of air hoists in safety, explosion-proof, energy savings, and environmental protection, more and more industries are willing to use pneumatic hoists instead of electric hoists. In many automation systems, the pneumatic hoist is often used for replacement. How do you install the pneumatic hoist? Firstly, when we install the air hoist, we must also install the oil-level display device at the same time. Generally, the oil level display device should be installed at the air inlet of the air hoist. If the oil level display device is not installed in time when the electric hoist is installed, the service life of such an air hoist will be shortened after use. Secondly, we must remember to install a gas protection net on the air supply part of the air hoist. After such a gas protection net is installed, it will have a better explosion-proof effect. For the installation of the above, the oil output must be controlled within the range of 5 drops per minute. If the...

Common Causes of Electric Hoist Failures and Corresponding Solutions

Electric hoists will inevitably have some problems of one kind or another during long-term use. Some faults are relatively common. So what are these hoists’ common problems and solutions? (1) Whether the electric hoist has electricity. You can use a test pen to determine whether the power supply system is sending power to the electric hoist power supply. If there is no power supply, wait for the power supply to restart. (2) Damage to the electrical appliances of the main and control circuits of the hoist, disconnection of the lines, or poor contact will also cause the hoist motor to fail to be energized. In this case, it is necessary to overhaul the main and control circuits. The power supply of the three-phase motor lacks a phase and burns the motor, or the hoist motor is suddenly energized to run, causing hazards. Be sure to disconnect the hoist motor from the power line, only supply power to the main and control circuits, and then jog the start and stop switches, check and analyze the working conditions of the control electrical appliances and lines, repair or replace the problematic electrical appliances or lines, and re-test the car when it is confirmed that...