Four-upright hoist with rotatable uprights

Abstract

The invention discloses a four-upright hoist with rotatable uprights and relates to the field of hoist manufacture. The four-upright hoist comprises a base, the uprights, a workbench and a slider. Onesurface of the base is provided with a plurality of annular grooves. An annular rack is arranged at the outer groove edge of each annular groove. Two opposite side faces of each upright are providedwith a limiting groove and a gear correspondingly, wherein a hydraulic cylinder is fixedly connected in the limiting groove, a stepping motor is arranged below the limiting groove, one end of the stepping motor is fixedly connected with the gear, a first lug is arranged on the bottom face of the upright, two opposite side faces of the first lug are each provided with a rotary shaft, and the ends,not connected with the first lug, of the two shafts are provided bearings, the corresponding annular rack meshes with the gear, and the separated surfaces of the two bearings are matched with the inner surface and the outer surface of the corresponding annular groove. According to the four-upright hoist, the motor rotates to drive the uprights to rotate flexibly in the annular grooves, a vehicle can be driven onto the workbench from multiple directions, flexibility of the four-upright hoist is improved, and collision friction between the vehicle and the uprights is avoided.

Description

technical field [0001] The invention belongs to the field of lift manufacturing, in particular to a four-column lift with rotatable columns. Background technique [0002] As my country's cars go deep into families, the car repair industry has also ushered in a peak period, and the demand for car lifts has also increased, because it is a common equipment in car repair workshops. [0003] At present, lifts generally have column type and scissor type, and their driving methods include chain transmission, hydraulic transmission, and pneumatic transmission; among them, the placement requirements of lifts have become an important concern. Usually the four-post lift can only provide a channel for the upper and lower workbenches, and the other two sides are often not used. Usually, due to site restrictions and vehicle width restrictions, the four-post lift needs to be adjusted. The four post pairs are fixed on the bottom plate. As a result, the flexibility of the four-post lift is ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a four-column lift with a rotatable column. By setting an annular groove on the base, a stepping motor at the lower end of the column is used to drive the gear to mesh with the ring rack outside the annular groove; Install the bearing so that the bearing and the annular groove fit each other, which solves the problem that the column of the existing four-post lift cannot move and the flexibility of the four-post lift is insufficient

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