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Chain Crane Operating Procedures


Chain Crane: Also known as the immortal gourd, Catty, hand-pull gourd, is a simple, easy to carry manual lifting machinery, also known as "ring chain gourd" or "inverted chain." It is suitable for short distance lifting of small equipment and goods, the weight is generally not more than 100T. Hand-pull gourd shell material is high-quality alloy steel, rugged wear-resistant, high safety performance.

There are many kinds of chain cranes, such as differential, turbo-worm, planetary cycloid and planetary cylindrical gear drive.

Hoisting, with the hook will manually chain crane hanging at a certain height, Chain Hoist bundled with the weight of the sling hanging on the hook, with the hand to pull the drive chain, so that the drive sprocket clockwise rotation, because the right screw thread of the connection drive sprocket can be turned to the right side to move, so that the friction plate, ratchet, and brake disc three pressure each other, Chain Hoist so the drive shaft with the driving sprocket with the same direction, at this time the pawl on the ratchet gear surface skidding and do not play the role of braking; the drive shaft drives the sun gear to rotate, and the planetary gear rotates around its mandrel, At the same time around the sun gear revolution, and finally led the rotating arm and lifting sprocket rotation, Chain Hoist to lift the object of lifting. When the lifting is stopped, the pawl is automatically inserted into the ratchet immediately to prevent heavy objects from falling. In order to reduce the weight, only the reverse pull drive sprocket, the weight can gradually decline.

Chain Crane Operation: 3.1 Before lifting inspection 3.1.1 All parts must be intact, transmission part and lifting chain lubrication good, empty operation normal; check hanger, hook, chain, axle, sprocket and other components, such as deformation, distortion, rust, cracks, damage, transmission part of the inflexible, etc., strictly prohibited. 3.1.2 use must not exceed its rated lifting capacity, Chain Hoist hand-pull gourd shell should be rated tonnage markings. The temperature below $number shall not exceed half of its nominal weight. 3.1.3 does not allow hook hooks with hooks to hang heavy objects; 3.1.5 before lifting the upper and lower hooks to check whether hanging, Chain Hoist lifting chain should be vertical suspension, lifting chain can not be twisted and knotted, double row chain hand pull gourd of the lower hook components can not be flipped; 3.1.6 hooks should be on the weight of gravity of the plumb, Chain Hoist to prevent the weight tilt, flip 3.1.7 when using hoist hanging point should be stable, solid and reliable, and can withstand the corresponding lifting weight, lifting when the hand-pull gourd hanging on the building members, must be the technical person responsible for the load calculation, to confirm the safety of the operation. 3.2 Hoisting Operation 3.2.1 operation should be first Test hanging, when using, first pour loose chain, hang good lifting object, slowly pull the traction chain, after the lifting chain force, the lifting chain should not be twisted, and then check the gear meshing and self-locking device working conditions, confirm the correct rear can continue lifting operation. 3.2.2 Pull the chain, force to uniform, and the direction of the sprocket, not inclined to pull, Chain Hoist pull the chain only one person operation, strictly prohibited two people above the pull. When used in various locations, the hand-pull chain should be kept in the rotating working plane of the sprocket, in case of removing the groove, pulling the chain should be forced evenly, not too fast too fierce, the file card chain, should be identified after the cause of treatment can continue to use; When the weight is off the ground, if the operation is normal, the braking is reliable, can continue to hoist; 3.2.3 The operator shall not stand on top of the heavy object, nor shall it be lifted from the air and left the scene; 3.2.4 lifting process, no one in the heavy objects to walk or stay; 3.2.5 must not use the manual drive way lifting heavy weights. In the lifting process, regardless of the weight rise or fall, pull the chain, force should be evenly gentle, do not force too hard, Chain Hoist lest the hand chain beating or card ring. When the tension is found, it is not necessary to increase the tensile force, to immediately stop the use, check whether the heavy weights are related to other objects, whether the weight of weights exceeds the rated weight, the hoist parts have no damage and so on. 3.2.6 Heavy weights must be in the space for a longer period of time, the small chain should be tied to the large chain; After the hoisting, Chain Hoist after the safe landing of the heavy objects, you can remove the hand pull gourd under the hook;

Chain Crane (hand-pull gourd) Operating Procedures 3.1 before lifting inspection 3.1.1 All parts must be intact, transmission part and lifting chain lubrication good, empty operation normal; check hanger, hook, chain, axle, sprocket and other components, such as deformation, distortion, rust, cracks, damage, Chain Hoist transmission part of the inflexible, etc., strictly prohibited. 3.1.2 use must not exceed its rated lifting capacity, hand-pull gourd shell should be rated tonnage markings. The temperature below $number shall not exceed half of its nominal weight. 3.1.3 does not allow hook hooks with hooks to hang heavy objects; 3.1.5 before lifting the upper and lower hooks to check whether hanging, lifting chain should be vertical suspension, lifting chain can not be twisted and knotted, double row chain hand pull gourd of the lower hook components can not be flipped; 3.1.6 hooks should be on the weight of gravity of the plumb, to prevent the weight tilt, flip 3.1.7 when using hoist hanging point should be stable, solid and reliable, Chain Hoist and can withstand the corresponding lifting weight, lifting when the hand-pull gourd hanging on the building members, must be the technical person responsible for the load calculation, to confirm the safety of the operation. 3.2 Hoisting Operation 3.2.1 operation should be first Test hanging, when using, first pour loose chain, hang good lifting object, slowly pull the traction chain, after the lifting chain force, the lifting chain should not be twisted, and then check the gear meshing and self-locking device working conditions, Chain Hoist confirm the correct rear can continue lifting operation. 3.2.2 Pull the chain, force to uniform, and the direction of the sprocket, not inclined to pull, pull the chain only one person operation, strictly prohibited two people above the pull. When used in various locations, the hand-pull chain should be kept in the rotating working plane of the sprocket, in case of removing the groove, pulling the chain should be forced evenly, not too fast too fierce, the file card chain, should be identified after the cause of treatment can continue to use; When the weight is off the ground, if the operation is normal, the braking is reliable, can continue to hoist; 3.2.3 The operator shall not stand on top of the heavy object, nor shall it be lifted from the air and left the scene; 3.2.4 lifting process, no one in the heavy objects to walk or stay; 3.2.5 must not use the manual drive way lifting heavy weights. In the lifting process, regardless of the weight rise or fall, pull the chain, force should be evenly gentle, Chain Hoist do not force too hard, lest the hand chain beating or card ring. When the tension is found, it is not necessary to increase the tensile force, to immediately stop the use, check whether the heavy weights are related to other objects, whether the weight of weights exceeds the rated weight, the hoist parts have no damage and so on. 3.2.6 Heavy weights must be in the space for a longer period of time, the small chain should be tied to the large chain; After the hoisting, after the safe landing of the heavy objects, you can remove the hand pull gourd under the hook;