Hydraulic lifting mechanism for field operation table

Abstract

The invention relates to a hydraulic lifting mechanism for a field operation table. The hydraulic lifting mechanism is characterized by comprising a base, an inner guide column, an outer guide column, eccentric pulley units, an installing disc, a hydraulic pump and a hydraulic pump switch, wherein the outer guide column and the inner guide column are of square structures; the outer guide column is matched with the inner guide column through the eccentric pulley units in a sliding manner; four groups of eccentric pulley blocks are fixed on the four surfaces of the outer guide column; each group of eccentric pulley block comprises at least three eccentric pulley units; four rail grooves are longitudinally arranged on the four side walls of the inner guide column; each eccentric pulley unit comprises a bearing, a small shaft and an eccentric stepped shaft sleeve; the bearings are matched with the rail grooves in a rolling manner; inner rings of the bearings are fixedly connected with thesmall shafts; the small shafts are connected with the eccentric stepped shaft sleeves in a sliding manner; the eccentric stepped shaft sleeves are connected with the outer guide column in a sliding manner; and the small shafts and the eccentric stepped shaft sleeves are fastened on the outer guide column. The hydraulic lifting mechanism has the beneficial effects that the eccentric pulley units are adopted to form an S-shaped eccentric pulley block structure which can be contacted with the rail grooves tightly, so that the outer guide column can move stably in lifting without clamping stagnation, and the swinging quantity of a bed surface is very little.

Description

technical field [0001] The invention belongs to operating tables, in particular to a hydraulic lifting mechanism for field operating tables. Background technique [0002] The operating table is used as a surgical treatment platform. In order to meet the needs of the wounded in different positions for surgery, the operating table must have a lifting adjustment of more than 250MM according to the standard of medical equipment. The smaller the longitudinal and lateral swings of the bed surface during lifting and lowering, the better. Therefore, there are high requirements for the lifting mechanism. As the necessary mobile medical equipment for medical rescue organizations, the field operating table is different from the operating table used in the operating room of a fixed hospital in that it needs to be repeatedly loaded, unloaded and transported, which inevitably increases the swing of the bed surface, which requires the design of hydraulic pressure. The upgrade mechanism n...

AI Technical Summary

Problems solved by technology

At the same time, the inner square pipe, outer square pipe or inner sleeve and outer sleeve are all made of steel, which is heavy and not conducive to frequent handling under field conditions.

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