Hand chain block and lever hoist belong to the classification of manual hoist. They also apply the principle of lever, but there are great differences in performance.
Differences in working principles:
The hand chain hoist rotates by dragging the hand chain and the hand sprocket wheel, pressing the friction disc ratchet wheel and the brake pedestal into one body to rotate together. The 5-tooth long axle rotates the disc gear, the 4-tooth short axle and the spline hole gear. In this way, the lifting sprocket installed on the spline hole gear drives the lifting chain, thus lifting the weight smoothly. The product adopts ratchet friction disc type one-way brake, which can brake itself under load, and the ratchet claw meshes with the ratchet wheel under the action of spring to ensure the safe operation of the brake. It has the characteristics of safety, reliability, simple maintenance, high mechanical efficiency, small Bracelet tension, light self-weight, portable, beautiful appearance, small size and durable. It is suitable for factories, mines, construction sites, wharfs, docks, warehouses, etc. as installation machines and lifting cargo, especially for open-air and power-free operations. And flammable and explosive places also play an important role.
The lever hoist obtains the linear traction force matching the load by means of the lever principle through the manual wrench handle, which acts on a clamp body of the load in the machine core in turn, and drives the load to run. The utility model has the advantages of compact structure, light weight, small size, convenient carrying, safety and reliability, long service life, small spanner force, and small wear and tear to the steel wire rope. It can carry out lifting, traction, descent, calibration and other operations. If equipped with special devices, not only non-linear traction operation can be done, but also suitable operation position can be conveniently selected, or the load capacity of smaller tonnage machines can be multiplied. For larger tonnage loads, several machines can be used in parallel operation.
2. Which is more economical when using hand chain hoist and lever hoist?
The design of lever hoist is mainly used when the space is small or there is no good pulling posture. Generally, wrench hoist is used as horizontal pulling force, which saves labor horizontally, and hand chain hoist is used vertically. Hand hoist is not driven by hand zipper, but by rocker.
3. Which is more widely used for hand chain hoist and lever hoist?
The lever hoist has space. When you pull the brake of the lever hoist into space, you can easily pull down the weight with your hand, or pull back to adjust the distance between the lever hoist and the hand-pulled hoist, which is convenient for quick traction or lifting. In addition, the volume of the lever hoist, and its function is more efficient and wider.