Foldable gantry crane capable of ascending and descending

Abstract

The invention discloses a foldable gantry crane capable of ascending and descending, and belongs to the field of carrying tools. The foldable gantry crane capable of ascending and descending comprises a beam and supporting legs arranged on the two sides of the beam. Each supporting leg comprises a lifting supporting rod connected with the beam and a fixed supporting leg in telescopic fit with the lifting supporting rod, wherein a lifting mechanism is arranged between the lifting supporting rod and the fixed supporting leg. The beam is cut off from the middle, the two parts formed after cutting are hinged together, and the hinging portions are fixedly connected through a connecting plate. The two ends of the beam are connected with the upper portions of the lifting supporting rods through hinges respectively. After the connecting plate is detached, the beam can be bent downwards, and then the supporting legs on the two sides of the beam can be retracted inwards. Height adjustment can be performed as needed when the gantry crane is in use, so that use is easy and convenient. The beam can be lowered and folded when the gantry crane is not in use, so that occupied space is reduced, and transport is facilitated. The gantry crane is simple in structure, convenient to operate and low in cost.

Description

technical field [0001] The invention relates to a lifting device, in particular to a liftable and foldable gantry lifting device. Background technique [0002] The small and medium-sized gantry lifting device is a small lifting support platform developed according to the needs of handling equipment, warehouse import and export, lifting and maintenance of heavy equipment and material transportation in the daily production of small and medium-sized factories. It is widely used in mold manufacturing factories , auto repair factories, mines, civil construction sites and other occasions that require lifting. The use of gantry lifting devices can realize lifting mechanization, reduce manpower, reduce production and operation costs, and improve work efficiency. [0003] The currently used gantry lifting device mainly has the following disadvantages: [0004] (1) The height of the gantry frame is fixed, and the height cannot be adjusted according to the specific space of the const...

AI Technical Summary

Problems solved by technology

[0004] (1) The height of the gantry frame is fixed, and the height cannot be adjusted according to the specific space of the construction site, which brings some inconvenience to the use;

[0005] (2) Since the height of the gantry frame is not adjustable and is an integral structure, it takes up a lot of space during transportation, and it also brings inconvenience to the transportation of the gantry lifting device

However, in this application, it is still difficult to solve the problem that the gantry takes up a large space only by adjusting the height of the gantry, and it is still very inconvenient to transport when the beam is long; in addition, the application uses lifting pulleys and The lifting function of the gantry is realized by means of fixed pulleys. Although it is convenient to use, the winding of the wire rope is complicated and cumbersome. The wire rope turntable can only be used for the lifting of the gantry and cannot be used for other purposes.

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