1 Structure and operating principle of electric hoist
1. Structure of electric hoist:
Composed of a steel pipe tripod and an electric winch unit. The top of the tripod is fixed with a flange, and the electric winch unit consists of one 3KW three-phase 4-stage motor and one 30:1 reducer. One pulley and hook with a load-bearing capacity of 1 ton are provided as supporting tools.
2. Working principle of electric hoist:
The wire rope of the electric winch moves up and down through the top pulley of the tripod to lift objects. The power control equipment consists of a leakage protector, an air switch, and a reversing switch, making it easy, safe, and convenient to operate.
2 The effect of electric hoist in practical operation
1. It has changed the traditional manual operation of the hoist and reduced the labor intensity of workers in transportation operations.
2. Electric hoist can improve the safety guarantee factor, shorten the working time of workers, and improve labor efficiency in practical construction.
3. This set of equipment is relatively simple to purchase and easy to assemble.
3 Some specific and limitations of electric hoist in practical construction:
1. It is necessary to have a power supply at the work site for the electric hoist, as most base stations are constructed outdoors without power supply. It is necessary to equip a three-phase diesel generator set, distribution board, cables, etc. The diesel engine consumes diesel and engine oil, which will increase the construction and production costs of the base station.
2. The construction of base stations is scattered, and the construction sites are not centralized and far apart. Some base stations are located on high mountains, which adds to the construction and production costs in terms of transportation and transfer.

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