Rigid telescopic oil tube with oil supply and oil discharge functions

Abstract

The invention provides a rigid telescopic oil tube with oil supply and oil discharge functions, which not only can ensure that a hydraulic operating mechanism can realize a length change function without using a drag chain, but also ensure the stability of an oil path through the design of an oil supply valve and an oil discharge valve. The rigid telescopic oil tube with the oil supply and oil discharge functions comprises a rigid telescopic tube, the oil supply valve and the oil discharge valve; the rigid telescopic tube comprises an inner rigid tube and an outer rigid tube; the inner rigid tube used as a movable tube of the telescopic oil tube is nested in the outer rigid tube, a front end tube sleeve is provided with a bayonet fixed together with a telescopic or amplitude-changing device of the operating mechanism on hydraulic mechanical equipment so as to ensure equal-amplitude movement, an oil delivery hole at the forefront end is connected with a hydraulic actuating part so as to supply oil to the hydraulic actuating part, the outer rigid tube used as a fixed tube of the telescopic oil tube is connected to a fixed arm of a telescopic arm through a joint bearing, the inner rigid tube is connected to a movable arm of the telescopic arm, oil liquid is communicated with an external oil path through an oil inlet / outlet of the outer rigid tube, and the inner rigid tube is connected with a hydraulic actuator; and an inlet of the oil supply valve and an outlet of the oil discharge valve are both connected with one end of an oil return path, and the other end of the oil return path is connected with an oil tank.

Description

technical field [0001] The invention relates to a rigid telescopic oil pipe with the functions of replenishing and unloading oil, and belongs to the technical field of hydraulic machinery oil delivery. Background technique [0002] At present, more and more operating mechanisms on hydraulic mechanical equipment require telescopic movement or luffing movement to complete more functions, and the actuating parts at the front end of these mechanisms generally require hydraulic devices to provide power for them. The traditional hydraulic pipelines are realized by drag chains and flexible oil pipes arranged outside or inside the operating mechanism, that is, the oil pipes are arranged inside the drag chains to complete the length change functions such as bending of the oil pipes. However, if the drag chain and oil pipe are arranged inside the operating mechanism, the space in the operating mechanism will be narrow, and it is difficult to install, disassemble and maintain; if the d...

AI Technical Summary

Problems solved by technology

However, if the drag chain and oil pipe are arranged inside the operating mechanism, the space in the operating mechanism will be narrow, and it is difficult to install, disassemble and maintain; if the drag chain and oil pipe are arranged outside the operating mechanism, it will be unfavorable for the operating mechanism Working in a narrow environment, the oil pipe cannot be well protected. Once the oil pipe breaks or breaks, it may cause a major accident

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