Electric hoists are often used in conjunction with single-beam cranes . Some customers may need to replace the electric hoist due to improper maintenance or long-term use. The editor introduces the correct installation method of the electric hoist on the electric single-beam crane.
The electric hoist must be inspected as soon as it is received. It is necessary to confirm whether the documents, manuals, and certificates of the electric hoist are complete. The equipment and spare parts should be consistent with the packing list, and the appearance of the equipment should be undamaged. Before the formal installation of the electric hoist, it is necessary to test the upper process, and then install it after confirming that it is qualified.
1. Before hoisting, check whether the reducer of the hoisting part of the electric hoist is filled with lubricating oil according to the regulations, and whether the walking part is filled with lubricating grease. Be aware of the oil stains or anti-rust oil on the treads of the electric trolley.
2. Read the instruction manual and other random documents carefully to understand the product structure. Check whether the electrical control box is wired according to the electrical diagram, and check the insulation status of the hoisting motor and the walking motor.
3. Check whether the fixed end of the wire rope is tightened, and whether the plug is wedged firmly.
4. Check whether the wiring of the control button is correct, and the safety rope of the fixed button must be installed.
5. According to the regulations, the hook must be painted with yellow and black zebra pattern paint, and the hook safety device is complete.
6. There must be three pressure plates at each end of the wire rope and the reel, and the bolts must be fastened.
7. The evacuator is assembled correctly, and the ascending and descending limit switches are installed correctly. Hoisting of electric hoist
The hoisting of the electric hoist can be installed according to the actual conditions of the construction site. It can be installed with a crane or with equipment such as chain hoists. When hoisting, take care that the rope must be protected to prevent damage to the equipment. According to the weight of the equipment, choose a rope hoist for hoisting Tool.
Gap adjustment
The gap between the inner side of the wheel flange of the electric hoist and the flange of the I-beam track is guaranteed to be between 3 and 5 mm. This is achieved through gasket adjustment. This is a key and must be achieved.
When the axial movement of the cone rotor motor shaft is generally 1.5mm, the braking effect is the best. If the electric hoist slides too much under the rated load, it needs to be adjusted. The adjustment method is as follows:
Remove the tail cover. Unscrew the four screws that fix the adjustment nut, turn the adjustment nut clockwise with a wrench to the limit position, turn it counterclockwise one more time, and then install the fixing screws. Adjustment of the fire stopper
The adjustment of the fire limiter is realized by adjusting the two strikers on the limit rod. The adjustment method is: loosen the screws on the striker, and place the striker on both sides of the rope guide card board, and the card board can freely push the striker to move. Start the motor to start lifting, and the pallet pushes the upper limit striker to move, and when the upper edge of the hook pulley shell is 150mm~50mm from the lower edge of the reel shell, stop ascending, click the down button, and when the rope guide moves back about 10mm , Stop, move the upper limit striker close to the card board, and tighten the screws. The adjustment of the lower limit position is the same as above, but in the opposite direction, but it must be ensured that when the hook is at the lowest position, there are more than 3 loops of wire rope on the drum.
1. No-load test: Start each mechanism under no load to carry out positive and negative test runs, check whether the control circuit is correct, whether the stopper and other electrical equipment work reliably, etc.
2. Static load test: When the operating mechanism is not moving, perform a test hoisting with a rated load of 1.25 times. The load is about 100 mm above the ground and suspended for 10 minutes. Each mechanism should be normal.
3. Dynamic load test: Under the condition of good static load test results, carry out a dynamic load suspension test with 1.1 times the rated load, the test period is 40s; rise 6s, stop 14s, drop 6s, stop 14s, and so on for 15 cycles , After the experiment, visually check whether there are abnormal phenomena in each part, and if there is no abnormality, it is qualified.
The installation of the electric hoist is actually relatively simple, as long as the installation is carried out according to the correct steps, there will rarely be problems. Welcome everyone to inquire about purchasing electric hoist.
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