Lifting appliance

Abstract

The lifting appliance comprises a lifting appliance body and at least one lifting device arranged on the lifting appliance body, each lifting device comprises a positioning mechanism and at least two sets of lifting lock mechanisms symmetrically arranged on the lifting appliance body, the lifting lock mechanisms and the positioning mechanisms are arranged at the bottom of the lifting appliance body in a protruding mode, and the lifting lock mechanisms are used for being connected with a part to be lifted; and the positioning mechanism is used for positioning the two groups of lifting lock mechanisms so as to align the lifting position on the to-be-lifted piece. According to the lifting appliance, the lifting lock mechanism arranged at the bottom of the lifting appliance body in the protruding mode can enable the lifting appliance to conduct lifting work in a small space and is not limited by the narrow stacking and placing space of the to-be-lifted pieces, and the positioning mechanism can assist in positioning the lifting position between the lifting lock mechanism and the to-be-lifted pieces; the lifting lock mechanism and the to-be-lifted piece can be accurately connected, the phenomenon of empty lifting or unhooking is avoided, and the reliability and the safety of the lifting appliance are improved.

Description

technical field [0001] The invention relates to the field of slings, in particular to a sling. Background technique [0002] Most of the existing spreaders are claw-type spreaders. This kind of spreader is difficult to carry out lifting work in a narrow space, and because its mechanical mechanism is too simple, and the operator who controls the spreader sits in the control room of the driving, the other The angle of view cannot fully see the specific situation of each pair of claws, so it is difficult to locate the lifting position with the parts to be lifted, and it is very easy to hang empty or unhook, posing a great safety hazard. In addition, because the claws of the claw-type spreader are usually grasped from the outside of the object to be lifted, a large enough gap must be reserved between adjacent objects to be lifted, so that the objects to be lifted cannot be arranged closely . Especially for the lifting operation of the concrete prefabricated pile mold, the pref...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing spreaders are claw-type spreaders. This kind of spreader is difficult to carry out lifting work in a narrow space, and because its mechanical mechanism is too simple, and the operator who controls the spreader sits in the control room of the driving, the other The specific situation of each pair of claws cannot be fully seen from the angle of view, so it is difficult to locate the lifting position with the parts to be lifted, and it is very easy to hang empty or unhook, posing a big safety hazard

In addition, because the claws of the claw-type spreader are usually grasped from the outside of the object to be lifted, a large enough gap must be reserved between adjacent objects to be lifted, so that the objects to be lifted cannot be arranged closely

Especially for the lifting operation of the concrete prefabricated pile mold, the prefabricated pile mold needs to be lifted in a narrow space (such as a steam curing pond), and the existing claw-type spreader is completely incompetent

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