Automatic lifting platform applied to motor homes

Abstract

The invention discloses an automatic lifting platform applied to motor homes. The automatic lifting platform comprises a screw rod fixed to a lifting platform supporting part, an inner casing pipe and an outer casing pipe which sequentially cover the screw rod, wherein the outer casing pipe is only driven to rotate by an external power source; the screw rod is fixed to the supporting part, is incapable of rotating and is only capable of moving in the height direction; the inner casing pipe rotates and moves in the height direction; the screw rod, the inner casing pipe and the outer casing pipe respectively are driven by respective threads; a cover plate I is arranged at the top end of the outer casing pipe; a through hole I with inner threads is formed in the center of the cover plate I; the inner casing pipe is in threaded connection with the through hole I; a baffle disc is arranged on the bottom end of the inner casing pipe; the outer diameter of the baffle disc is greater than that of the inner casing pipe; the baffle disc is in threaded connection with the outer casing pipe; a cover plate II in threaded connection with the screw rod is arranged at the top end of the inner casing pipe; a through hole II with inner threads is formed in the center of the cover plate; the screw rod is in threaded connection with the through hole II; a cover plate III is arranged at the bottom end of the outer casing pipe; the cover plate III is provided with a groove with a diameter which is slightly smaller than the inner diameter of the outer casing pipe and slightly greater than the diameter of the baffle disc.

Description

technical field [0001] The invention relates to a self-elevating platform for a caravan. Involving patent classification B66 Hoisting; hoisting; traction B66F Hoisting, hoisting, pulling or propelling not included in other classes, such as devices for applying hoisting or propelling forces directly to the load surface B66F3 / 00 for continuously Devices for lifting loads, such as jack B66F3 / 08 screw-operated. Background technique [0002] With the continuous development of the caravan industry, the requirements for the quality and multi-functionality of the caravan have also been continuously improved, and the requirements for the internal facilities of the caravan have also been increased accordingly. quality. [0003] At present, the common lifting devices are pneumatic, hydraulic, wire rope, etc. The pneumatic lifting mechanism has low load capacity, poor stability, and needs an air power source; the hydraulic lifting mechanism requires high processing accuracy and poor p...

AI Technical Summary

Problems solved by technology

[0003] At present, the common lifting devices are pneumatic, hydraulic, wire rope, etc. The pneumatic lifting mechanism has low load capacity, poor stability, and needs an air power source; the hydraulic lifting mechanism requires high processing accuracy and poor performance at low temperature; The structure of the mechanism is complex, and it is not easy to have too many sections, so the shrinkage height is limited; although the truss type, the sub-frame and the folding type have a large load capacity, their own weight and volume are also large

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