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Electric hoists represent their own machinery, strength, and toughness, while the stage is elegant, flowing, and soft, with conflicts and collisions between the two.

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Manual Hoist|

Stage Truss Manual Hoist

Time：2025-06-18

Brief Explanation :

The reason why stage truss manual hoists can save effort lies in that their internal mechanical structures utilize the principle of mechanical force saving, reducing the pulling force required for man

Category : Stage Chain Hoist Series

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Product Details

Product Name: Stage Chain Hoist

image_convert_Technical Parameters of Stage Chain Hoist

Core Force-Saving Structures and Principles of Stage Truss Manual Hoists

1. Mechanical Advantage of Pulley Block (or Sprocket Set)

The key component of a manual hoist is the sprocket system (a simplified form similar to a pulley block), whose force-saving principle is based on the characteristic of "movable pulley saving force":

When the chain goes around multiple sprockets, the weight of the heavy object is distributed across multiple chains, and human force only needs to pull one of the chains. For example, if the pulley block has 2 load-bearing chains, the pulling force only needs to bear 1/2 of the weight of the heavy object; if there are 4 chains, the pulling force is 1/4 (in an ideal state without considering friction).
Example: Suppose the weight of the heavy object is 100kg. Through the distribution of 2 groups of sprockets, human force only needs to apply about 50kg of pulling force to lift the heavy object.

2. Force Transmission Efficiency of Chain Drive

The meshing transmission between the chain and sprockets has almost no slippage, which can uniformly transmit human force to the heavy object and reduce energy loss. Compared with directly lifting the heavy object, the stage truss manual hoist uses the chain for "indirect force application", avoiding the inefficient mode of human force directly confronting gravity.

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