The four main forms of electric hoists can be classified based on the relative position of the motor and the drum. The following is a detailed explanation:

Electric hoist with motor axis perpendicular to drum axis:

Features: Adopting a worm gear transmission device, the width dimension is relatively large, the structure is bulky, the mechanical efficiency is relatively low, and processing is difficult.

Current situation: Due to the aforementioned drawbacks, electric hoists with this structural form are relatively rare, and there are even no manufacturers producing products with this structural form.

Electric hoist with motor axis parallel to drum axis:

Advantages: The height and length dimensions are relatively small, which helps to achieve efficient lifting operations in limited space.

Disadvantages: The width size is relatively large, grouping, manufacturing and assembly are relatively complex, and there is a high requirement for the turning radius of the track.

Electric hoist with motor installed inside the drum:

Advantages: Small length size, compact structure, helps to save space and improve work efficiency.

Disadvantages: The motor has poor heat dissipation conditions, poor grouping, inconvenient inspection, installation and maintenance of the motor, and relatively complex power supply devices.

Electric hoist with motor installed outside the drum:

Advantages: Good grouping, high degree of generalization, easy to change lifting height, and convenient installation and maintenance.

Disadvantage: The length size is relatively large, and more space requirements may need to be considered during design.

When maintaining and repairing electric hoists, it is necessary to follow the specific form and structural characteristics of the electric hoist. Here are some general maintenance and repair suggestions:

Regularly inspect the electrical components of the electric hoist to ensure that the motor, controller, cables, etc. are in good working condition.

Check the transmission parts, such as worm gears, chains, sprockets, etc., to ensure that they are free from wear, fractures, and operate smoothly.

Check the brakes and limiters to ensure that they can reliably stop or limit the movement of the electric hoist in emergency situations.

Lubrication and maintenance of electric hoists, and regular replacement of lubricating oil or grease according to the requirements of the equipment manual.

If necessary, disassemble and repair the electric hoist to ensure that all components are reinstalled in the correct order and manner.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment