Lifting apparatus

Abstract

The invention provides a lifting device applicable to assembling operations, with the advantages of automatically switching the balance hammer at a certain height, switching the operational height range through simple operations and reducing the load of the operator. The lifting device comprises a rack (the main body rack 2), a dragging component (chain 3) whose middle part is movably supported on the rack (2) while the two end parts are lifted differently; a hanging element (assembling clamp 4) arranged at one end of the dragging component (3) and used for hanging the goods (assembling parts92); a basic hammer (5) usually hung on the other end of the dragging component (3) and used for bearing the load of the hanging element (4); an additional hammer (6) arranged at the upper side of the basic hammer (5) and used for bearing the load of the goods (92); and a hammer switching device (a hammer anti-withdraw device 7) for holding the additional hammer (6) at the demounting and mountingposition with a preset height in the lifting routine of the additional hammer (6), wherein, the holding operation can be released.

Description

technical field [0001] The invention relates to a lifting device for lifting cargo, and more specifically relates to a lifting device for counterbalancing a counterweight to reduce required operating force. Background technique [0002] On an assembly line for automobiles or electrical equipment, parts are sequentially assembled to workpieces to complete the finished product. At this time, the assembly or movement of relatively large and heavy parts or products does not rely solely on manpower but uses lifting devices. Large-scale lifting devices such as cranes have power sources such as electric motors, but in simple lifting devices for lifting assembly jigs or assembly parts, a balancing method is often used. In a balanced lifting device, for example, a hanger is provided at one end of the wheel belt that is freely movable and supported on the fixed pulley, and a counterweight is suspended at the other end to make the two confront each other to reduce the required operati...

AI Technical Summary

Problems solved by technology

However, in order to return the movable stage to the original position, the assembly jig and the assembled parts need to be raised to avoid the movable stage, and the operator himself needs to support the load of the assembled parts above the installation position.

On the contrary, if it is constructed in such a way that the counterweight acts on the top of the fixed position, it will still require a large operating force to break the load balance before the assembly parts are installed.

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