Lifting device

Abstract

The invention discloses a lifting device which comprises a first lifting mechanism, an auxiliary support platform, a working platform located right above the auxiliary support platform, vertically arranged side support bodies, and at least two horizontally arranged limiting plates. The at least two side support bodies are symmetrically arranged along the vertical axis of the working platform; thelimiting plates are connected onto the two side support bodies and are driven by a control device so as to move relatively or reversely. According to the lifting device provided by the invention, theworking platform is lifted by the first lifting mechanism, and the lifting height is higher than a set standard position; after the working platform lifts up and goes over the limiting plates, the limiting plates move relatively, so that the gap of the limiting plates is smaller than the horizontal dimension of the working platform; and after the working platform lifts up to the stroke peak, the working platform is lowered to be placed on the limiting plates under the drive of a second lifting mechanism, and the position of the working platform is the standard position at the moment. The lifting device provided by the invention effectively solves the problems in the prior art, and the accuracy in lifting the working platform can be ensured.

Description

technical field [0001] The invention relates to a lifting device. Background technique [0002] The lifting device is a device used to lift the workpiece to a certain height for processing and production. The lifting device in the prior art usually includes: [0003] Lifting cylinder or lifting oil cylinder has fast action, simple structure, and can bear heavy workpieces, especially oil cylinders, but its disadvantage is that the lifting height cannot be precisely adjusted; [0004] The lifting motor is mainly a type of linear motor, whose lifting height can be precisely controlled, but it cannot be used for lifting large-scale workpieces. Contents of the invention [0005] The purpose of the present invention is to provide a lifting device that can not only realize the lifting of large-mass workpieces but also ensure the lifting accuracy. [0006] In order to solve the above problems, the present invention provides a lifting device, which is characterized in that it com...

AI Technical Summary

Problems solved by technology

[0003] Lifting cylinder or lifting oil cylinder has fast action, simple structure, and can bear heavy workpieces, especially oil cylinders, but its disadvantage is that the lifting height cannot be precisely adjusted;

[0004] Lifting motors, mainly a type of linear motors, whose lifting height can be precisely controlled, but cannot be used for lifting large-scale workpieces

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