The main parameters of electric chain hoist include lifting weight, lifting height, lifting speed, trolley running speed and working level. These parameters indicate the working performance and technical and economic indicators of the electric chain hoist, and are also the technical basis for the design of the electric chain hoist.
1. Lifting weight
The mass of items that the electric chain hoist can lift is called the lifting weight, which is represented by the symbol mQ, and the unit is kg or t. Lifting capacity is the main application technical parameter in the design of electric chain hoist. The mass of items that are allowed to be lifted during normal operation of the electric hoist and the mass of the devices that can be taken, such as grabs, containers, clamps, electromagnetic chucks, etc., are collectively called the rated lifting capacity; the maximum rated lifting capacity allowed to be lifted is called the maximum lifting capacity weight.
2. Lifting height
Lifting height refers to the height from the ground (or the top surface of the crane track) to the extreme position of the picking device (calculated to the center of the hook shackle when calculated with a hook, and calculated to the bottom of the container when calculated with a grab or other container) . When the retrieval device can be placed below the ground (or the top surface of the track), the distance below it is called the depth below it. The sum of the lifting height and the depth below is called the total lifting height. The lifting height is represented by the symbol H and the unit is m.
3. Lifting speed
In a stable operation state, the vertical displacement speed of the rated lifting load is the lifting speed, which is represented by the symbol Vm and the unit is m/s.
4. The running speed of the trolley
The moving speed of the electric chain hoist when it runs stably on a horizontal track is called the trolley running speed, which is represented by the symbol Vy, and the unit is m/s.
5. Working level
The working characteristics of electric chain hoist are intermittent, short-lived and repeatable. The various components of the lifting hoist (such as electric motor, deceleration device, brake) turn on, stop and turn forward, sometimes reverse, and repeat back and forth. The working time is long or short, and the load on the mechanism is sometimes full or sometimes light. . Based on the consideration of relevant regulations, the use level and load status of the crane structure are used to divide the work level of the structure.
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