Working Principle

As an upgraded version of fixed pulley, the hand chain hoist completely inherits the advantages of fixed pulley. At the same time, it adopts the combination of the reducer of reverse check brake and the chain pulley block, and symmetrically arranges the two-stage spur gear rotating structure, which is simple, durable and efficient.

The hand chain hoist rotates by pulling the manual chain and the hand chain wheel to press the friction plate ratchet wheel and the brake seat into one and rotate together. The long shaft of the tooth rotates slice gear, the short shaft of the tooth and the integral key-hole gear. In this way, the lifting sprocket of the device on the integral key-hole gear drives the lifting chain, thus steadily lifting heavy objects. The ratchet friction plate type one-way brake is adopted, which can brake by itself under load. The pawl engages with the ratchet under the action of spring, and the brake works safely.

Structural composition

When the hoist is lifted upwards, the manual chain and the hand sprocket are pulled clockwise to rotate. When descending, the hand chain is pulled counterclockwise to Zipper, brake seat is separated from the brake pad, and the ratchet wheel is stationary under the action of the pawl, the five-tooth long shaft drives the lifting sprocket to run in the opposite direction, so as to smoothly drop heavy objects. Hand hoist generally adopts ratchet friction plate type one-way brake, which can brake by itself under load. The pawl engages with the ratchet under the action of spring to make the brake work safely.

Hand chain hoist

Hand chain hoist is also called fairy gourd, chain hoist, inverted chain, Jin non-falling, manual hoist. It is a kind of manual lifting machine that is easy to use and easy to carry, also known as "chain hoist" or "inverted chain". It is suitable for short-distance lifting of small equipment and goods. The lifting weight is generally no more than 10T, the maximum can reach 20T, and the lifting height is generally no more than 6m. The shell material of the chain hoist is high quality alloy steel, which is strong and wear-resistant, and has high safety performance. When the hoist is lifted upwards, the manual chain and the hand sprocket are pulled clockwise to rotate. When descending, the hand chain is pulled counterclockwise to Zipper, brake seat is separated from the brake pad, and the ratchet wheel is stationary under the action of the pawl, the five-tooth long shaft drives the lifting sprocket to run in the opposite direction, thus lifting heavy objects smoothly.

Hand chain hoist overload is strictly prohibited.
Hand chain hoist it is strictly prohibited to use other power operations other than manpower.
Hand chain hoist before use, make sure that the parts are intact, the transmission part and lifting chain good lubrication and normal idling.
Check whether the upper and lower hooks are hung firmly before lifting the hoist. Hand chain hoist is strictly prohibited from wrong operations such as heavy objects hanging on the tip. Hand chain hoist lifting chain it should be hung vertically, with no wrong twist of chain ring, and the lower hook rack of double-row chain should not be turned over.
The operator should stand in the same plane as the hand chain wheel and pull the hands chain, so that the hand chain wheel can rotate clockwise to make the heavy object rise; Reverse pull the hands chain, you can slowly fall.
When lifting heavy objects, it is strictly forbidden for personnel to do any work or walk under the heavy objects to avoid personal accidents.
During the lifting process, no matter the weight rises or falls, when pulling the hoist for bracelet, the force should be even and slow, and do not force too hard to avoid bracelet beating or clamping ring.
If the operator finds that the hand tension is greater than the normal tension, he should stop using it immediately.
toyo chain hoist maintenance method:
toyo chain hoist should be cleaned and coated with rust-proof grease after use, and stored in a dry place.
Maintenance and overhaul should be carried out by those who are familiar with the mechanism of hand chain hoist, so as to prevent those who do not understand the performance principle of this machine from being disassembled and assembled at will.
After cleaning and maintenance, toyo chain hoist should be carried out no-load test to confirm that the work is normal and the braking is reliable before it can be delivered for use.
The friction surface of toyo hoist brake must be kept clean. The brake part should be checked frequently to prevent brake failure and self-falling of intermediate objects.