The stage chain pulley block for lifting, also known as the chain block, lever hoist, manual hoist, or "fall arrester," is a manually operated lifting machine with simple operation and portability, also referred to as a "chain hoist" or "lever hoist" in the industry.
This type of hand hoist is suitable for short-distance lifting of small equipment and goods. Its rated lifting capacity is typically under 10 tons, with large-scale models reaching up to 20 tons, and the maximum lifting height generally does not exceed 6 meters. The housing of the hand hoist is made of high-quality alloy steel through casting, featuring a sturdy and wear-resistant structure with excellent safety performance.
In terms of operating principles, when stage chain pulley block for lifting heavy objects upward, the manual chain is pulled clockwise to drive the hand chain wheel for lifting. During descent, the hand chain is pulled counterclockwise, causing the brake seat to disengage from the brake pad. The ratchet wheel remains stationary under the locking action of the pawl, while the five-tooth long shaft drives the lifting sprocket to rotate in the reverse direction, ensuring smooth lifting and lowering of heavy objects.
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