Pressure oil supplementing system of hydraulic oil cylinder

Abstract

The invention relates to a pressure oil supplementing system of a hydraulic oil cylinder. The pressure oil supplementing system comprises a pressure oil supplementing oil tank, an oil cylinder and a primary oil tank control unit, wherein the primary oil tank control unit comprises a primary oil tank and a control integrated block; one end of the control integrated block is connected with the primary oil tank; the other end of the control integrated block is connected with the oil cylinder; a bracket is arranged on the oil cylinder; the pressure oil supplementing tank is fixed on the bracket; the upper part of the pressure oil supplementing tank communicates with the primary oil tank through an oil tube; and the lower part of the pressure oil supplementing tank communicates with a rodless cavity of the oil cylinder. According to the pressure oil supplementing oil, the pressure oil supplementing tank is fixed on the oil cylinder through the bracket, and the general dimension of a hydraulic pump station and the size of a pump room are not required to expand, so that building cost of civil engineering is reduced; a special high-position platform is not required to arrange for mounting the oil supplementing tank, so that the construction difficulty and the construction cost are reduced; the pressure oil supplementing oil tank can bear certain pressure; when a piston rod of the oil cylinder extends out, hydraulic oil is conveyed to the oil cylinder from the pressure oil supplementing tank by virtue of back pressure, so that the oil cylinder is guaranteed to be filled up with oil, and the safety and the reliability of a hydraulic system are guaranteed.

Description

technical field [0001] The invention relates to the technical field of pressure oil tanks of hydraulic hoists, in particular to a pressure oil supply system for hydraulic oil cylinders. Background technique [0002] Now the application of hydraulic hoists in the water conservancy industry has become more and more extensive, and there are more and more types of hydraulic cylinders, and the control methods are becoming more and more perfect. [0003] The oil replenishment of the traditional hydraulic hoist is generally aimed at the piston hydraulic cylinder. The oil replenishment method includes oil replenishment from the main fuel tank (a fuel pipe is connected in parallel with the rodless chamber and directly inserted into the main fuel tank); The rodless cavity is self-priming to replenish oil by the negative pressure in the oil cylinder. However, both of these two oil replenishment methods have the situation that the oil replenishment is not in place; the harm of insuffic...

AI Technical Summary

Problems solved by technology

However, both of these two oil replenishment methods have the situation that the oil replenishment is not in place; the harm of insufficient oil replenishment is relatively large. The seal of the oil cylinder has a good effect on sealing high-pressure oil, but the barrier to air or water vapor is still not obvious, so If the rodless cavity cannot be filled with hydraulic oil after the piston rod is extended, water vapor may enter the inner wall of the cylinder, causing corrosion and rust, which will bring hidden dangers to the safe operation of the equipment

The traditional way of replenishing the main oil tank makes the overall size of the hydraulic pump station larger, and the size of the required pump room also increases, which increases the cost of civil construction; the independent high-level oil replenishment tank needs to be equipped with a special platform at a high level, which increases the difficulty of construction and cost, not aesthetically pleasing

Images