How to improve the service life of the electric chain hoist?

The product manufacturing process and the quality of raw materials determine the service life of the electric chain hoist. But, proper follow-up maintenance can not only extend the service life, but also increase the flexibility of the electric hoist operation.

The electric hoist focuses on maintenance and protection of the two major parts, the brake and the reducer. These two are the main components of the electric hoist. Meanwhile, they are also parts that are prone to problems. You should check the protection regularly, repair and replace them in time if they are damaged.

The maintenance work of the electric chain hoist is divided into the maintenance during the installation and the maintenance during the operation after the installation. New installation or dismantling of the electric hoist, in order to ensure normal operation, it is necessary to carry out no-load operation. The power-on operation cannot be carried out before the commissioning of the device, and the power-on and no-load can be carried out after the commissioning of the device. Regarding the protection and maintenance of the electric hoist in use, once the abnormal operation of the electric hoist is found, the various values during the operation should be recorded in time, and then Perform a technical analysis to ensure that the rated load is below the load required for commissioning. At the same time, pay attention to protect the cleanliness of the oil to ensure that the oil is clean and free of impurities during the operation of the electric hoist, and the oil volume is moderate.

To sum up, it is necessary to improve the maintenance process of the electric chain hoist. The electric hoist must be debugged scientifically before being used. Then, pay attention to the maintenance and repair of the brake and reducer to improve service life.

What are the safety devices of electric chain hoist?

Electric chain hoist is a widely used lifting tool. Safety protection is necessary. Some accessories in chain electric hoist play the role of safety protection device. What are the main ones? How does it work? The following articles will introduce you in detail:

1. Motor brake

Motor brake design. The feature is that the brakes act immediately when the power is turned off even under full load.

2. Hook and safety piece

The hook is forged from high tensile steel and is heat treated to meet the requirements of load strength and hardness. It can be rotated 360° horizontally, and is equipped with a hook safety piece to ensure safety during take-off and landing.

3. Phase protection relay

The electric furnace design of the phase protection relay can protect and prevent the motor from burning when the phase of the motor power supply is connected incorrectly.

4. Reverse phase protection device

It is the protector of the power supply. When the power supply is connected incorrectly, the electric hoist will automatically control the circuit to protect the motor from burning out and avoid motor damage caused by improper human operation.

5. Limit switch

The upper and lower limit switches can automatically cut off the power when the limit is exceeded during lifting and lowering, preventing the chain from exceeding the limit and ensuring safety.

6. Emergency stop button switch (optional)

The secondary button is used to stop the electric chain hoist in an emergency. It's a red, mushroom-shaped button that sits above the push button switch. When the button is pressed, the power to the device will be cut off and the button will automatically lock. Turning clockwise releases the button and restarts the electric hoist.

How to adjust the electric chain hoist brake?

The electric hoist brake is realized by the motor. Remove the tail cover, unscrew the four screws that fix the adjusting nut, use a wrench to turn the adjusting nut clockwise to the limit position, then turn it counterclockwise once, and then install and tighten it. The screw can be adjusted successfully.

Type: 1. The electric chain hoist whose motor axis is perpendicular to the reel axis adopts a worm gear drive, which is long in width, bulky in structure, low in mechanical efficiency, and difficult to process. There are no manufacturers that produce products with this structure.

2. The electric chain hoist with the motor axis parallel to the reel axis has the advantages of small height and length. The disadvantage is that the width is large, the grouping, and the manufacturing and assembly are complicated. The track has a large turning radius.

3. The electric hoist with the motor installed in the drum has the advantages of small length and compact structure. The main disadvantages are poor motor heat dissipation conditions, poor grouping, inconvenient inspection, installation and maintenance of the motor, and complicated power supply devices.

4. The electric chain hoist with the motor installed outside the drum has the advantages of good grouping, high degree of generalization, easy to change the lifting height, and convenient installation and maintenance. The disadvantage is that the length and size are large.

If you have any technical questions about electric chain hoists, please contact us freely, and we will give you the most professional answers.