Heavy-load high-accuracy lifting device with multiple sections capable of freely extending and retracting

Abstract

The invention relates to a heavy-load high-accuracy lifting device with multiple sections capable of freely extending and retracting, which comprises a base module, a power module, an intermediate extension and retraction module A, an intermediate extension and retraction module B, a final extension and retraction module and a lifting device platform, wherein the base module is arranged on a base. The heavy-load high-accuracy lifting device is characterized in that the power module transmits power to a central power lead screw (12) and the central power lead screw (12) helically transmits the power to the intermediate extension and retraction module A to drive the internal male-thread lead screw III (13) of the intermediate extension and retraction module A to extend and retract; the internal male-thread lead screw III (13) helically transmits the power to an internal male-thread lead screw II (14) to drive the intermediate extension and retraction module B to extend and retract; and the internal male-thread lead screw II (14) helically transmits the power to the internal male-thread lead screw I (6) of the final extension and retraction module to drive the internal male-thread lead screw I (6) to extend or retract. The heavy-load high-accuracy lifting device has the advantages that the device can be stopped and self-locked at any position under heavy-load complex working conditions, the device is convenient to install, the fitting is close, the device is modularized and the performance is reliable.

Description

technical field [0001] The patent of the present invention relates to a structural device of a lifting platform, in particular to a structural device of a large-load high-precision lifting platform capable of multi-section free expansion and contraction. Background technique [0002] The main structural forms of multi-section lifting platforms include scissor lifting platforms, casing lifting platforms, and aluminum alloy lifting platforms (mast type). These three types all have the characteristics of folding, that is, they take up little space after shrinking. However, the disadvantage of the scissor lift platform is that it is not stable. It mainly uses hydraulic pressure as the power, which is easy to leak and the system is unstable; Same as lifting platform. The main disadvantage of the aluminum alloy lifting platform is that the load is relatively small, generally around 300 kilograms. [0003] In addition to the above-mentioned multi-section lifting platform, there ...

AI Technical Summary

Problems solved by technology

The disadvantage of this structural device is that there are relatively many parts involved. Therefore, errors are inevitably caused during the installation and transmission process, and it cannot meet the high stability and precision requirements after stretching; at the same time, because the structure of the lifting platform is too loose, thus The volume of the lifting platform is too bloated, which not only wastes materials, but also increases the weight of the lifting platform; in addition, it is difficult for this lifting platform to meet the load requirements of different working conditions, especially the use requirements under heavy load conditions

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