Fixed hydraulic lifting machine

Abstract

The invention relates to a fixed hydraulic lifting machine which comprises a base, a bearing platform, supporting arms and a driving mechanism, wherein the supporting arms are positioned on two sides of the base and are arranged in an internal-external crossed manner; the driving mechanism is used for driving the supporting arms to being relatively unfolded or folded; each supporting arm comprises a first supporting arm and a second supporting arm; the first supporting arms and the second supporting arms are arranged in an internal-external crossed manner and rotationally connected with each other; the lower end parts of the first supporting arms are rotationally arranged on the base; the upper end parts of the first supporting arms are arranged at the bottom of the bearing platform in a sliding manner; the lower end parts of the second supporting arms are arranged on the base in a sliding manner; the upper end parts of the second supporting arms are rotationally arranged at the bottom of the bearing platform; the hydraulic lifting machine also comprises first supporting rods and second supporting rods; the first supporting rods are used for connecting the lower end parts of the second supporting arms on two sides synchronously; the second supporting rods are used for connecting the middle upper parts of the supporting arms on two sides synchronously; the driving mechanism comprises hydraulic cylinders and a hydraulic pump station; two end parts of the hydraulic cylinder are respectively and rotationally arranged on the first supporting rods and the second supporting rods; and the hydraulic pump station is arranged on the base, and is positioned between the supporting arms on two sides. The fixed hydraulic lifting machine can realize the lifting of the bearing platform relatively stably.

Description

technical field [0001] The invention relates to a fixed hydraulic lift. Background technique [0002] The current fixed hydraulic lift is widely used in many industries due to its almost unlimited stroke and strong load capacity. The underground sealed horizontal garbage compression and transfer equipment gradually promoted in the environmental sanitation department, because of its long lifting stroke and large load capacity, many manufacturers have adopted a double scissors structure and a hydraulic lifting mechanism with multiple multi-stage telescopic hydraulic cylinders. lift. Due to the many hinge points of the double scissors structure, there is a movable gap at each hinge point. The accumulation of the movable gap and the enlargement of the longer scissor arm are prone to structural deformation, which affects the accuracy of its lifting position. When multiple multi-stage telescopic hydraulic cylinders are used at the same time, due to the error of the mechanical pr...

AI Technical Summary

Problems solved by technology

Due to the many hinge points of the double scissors structure, each hinge point has a movable gap. The accumulation of the movable gap and the amplification of the longer scissor arm are prone to structural deformation, which affects the accuracy of its lifting position.

When multiple multi-stage telescopic hydraulic cylinders are used at the same time, due to the error of the mechanical processing of the parts and the resistance error of the hydraulic oil in the pipeline, the impact on the work of the cylinder rod with a small diameter in the hydraulic cylinder is more obvious, generally from the second When the first-stage cylinder rod begins to expand and contract, it often appears out of sync, which affects the stability of the equipment's lifting

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