a lifting device

Abstract

The invention relates to a lifting device which comprises a lifting mechanism connected with a hydraulic control system, wherein the lifting mechanism comprises more than one group of lifting units; each lifting unit comprises a lower supporting plate, an upper lifting platform and multilayer supporting devices; each-layer supporting device comprises two supporting arms arranged in an X-shaped cross manner and hinged through a pin shaft; the upper ends of the two supporting arms are correspondingly hinged to the lower ends of two supporting arms of the upper-layer supporting device; the bottom end of a supporting arm of the lowest-layer supporting device is hinged to the lower supporting plate, and a lower idler wheel which rolls in a lower track on the lower supporting plate is mounted at the bottom end of the other supporting arm of the lowest-layer supporting device; the top end of a supporting arm of the uppermost-layer supporting device is hinged to the bottom of the upper lifting platform, and an upper idler wheel which rolls in an upper track on the upper lifting platform is mounted at the top end of the other supporting arm of the uppermost-layer supporting device; the fixed end of a hydraulic cylinder is hinged to the lower section of one supporting arm of the lowest-layer supporting device; the stretching end of the hydraulic cylinder is hinged to the lower section of one supporting rod of the uppermost-layer supporting device.

Description

technical field [0001] The invention relates to a lifting device, in particular to a hydraulically controlled lifting device. Background technique [0002] The lifting device is generally used for the vertical transportation of heavy objects, such as the up and down transportation of goods between building floors, the lifting of cars between the floors of three-dimensional garages and underground garages, and the lifting of working platforms. Traditional lifting devices usually have the following limitations: 1. The lifting height is limited, and the transportation between floors of buildings cannot be realized; 2. The size of the lifting platform is limited, and large objects cannot be lifted, and the balance of the lifting platform No, the position of the lifted object needs to be adjusted repeatedly before lifting to prevent tipping during the lifting process; 3. The hydraulic power system does not have anti-drop and overload protection functions, and is prone to failure....

AI Technical Summary

Problems solved by technology

Traditional lifting devices usually have the following limitations: 1. The lifting height is limited, and the transportation between floors of buildings cannot be realized; 2. The size of the lifting platform is limited, and large objects cannot be lifted, and the balance of the lifting platform Not good, the position of the lifted object needs to be adjusted repeatedly before lifting to prevent tipping during the lifting process; 3. The hydraulic power system does not have the functions of anti-drop and overload protection, and it is prone to failure

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