Manual cargo lifting device with labor saving and fall-proof function

Abstract

The invention relates to the field of cargo lifting equipment, and discloses a manual cargo lifting device with labor saving and fall-proof function. The manual cargo lifting device comprises a torque amplifying mechanism, a one-way self-locking mechanism and a clutch mechanism; the torque amplifying mechanism comprises a plurality of planetary gear trains in transmission connection in turn, and the planetary gear of the foremost planetary gear train is driven by a drive handle, and the sun gear shaft of the rearmost planetary gear train is provided with a rope sheave on which a lifting rope is arranged; the one-way self-locking mechanism comprises a rotating shaft rotatably arranged and a fixed ring fixedly arranged and coaxially sheathed on the periphery of the rotating shaft, and a plurality of groups of self-locking elements used for preventing the rotating shaft from rotating in the cargo descent direction are arranged between the fixed ring and the rotating shaft. In the invention, the effects of obvious labor saving and acceleration can be achieved, single operator can also lift heavier cargoes easily, and loss of persons and cargoes caused by weight dropping resulting from a rocking handle out of hand can be avoided.

Description

technical field [0001] The invention relates to the field of cargo lifting and lifting equipment, in particular to a manual cargo lifting device with labor-saving and anti-drop functions. Background technique [0002] The cargo lifting device is a kind of lifting equipment widely used in construction sites and factories, and is used to lift various materials and tools to the target floor height for supplying construction or production. Cargo lifting devices can be divided into hand-driven and motor-driven according to the driving mode. The hand-driven type has the advantages of simple structure, easy implementation, and easy maintenance, which can meet the lifting of small and medium-sized goods. [0003] In the prior art, since the power input of the hand-driven cargo lifting device is manpower, which is weaker than that of the motor-driven type, it is necessary to increase manpower appropriately when lifting heavy cargo, which not only wastes manpower, but also easily Han...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, since the power input of the hand-driven cargo lifting device is manpower, which is weaker than that of the motor-driven type, it is necessary to increase manpower appropriately when lifting heavy cargo, which not only wastes manpower, but also easily Hand slipping and falling goods are a major hazard in construction sites and factories

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