An explosion-proof forklift hydraulic pipeline tee joint

Abstract

The invention relates to the technical field of hydraulic pipeline joints and particularly relates to an explosion-proof type three-way joint for a hydraulic pipeline of a forklift. The three-way joint comprises a valve body and a three-way valve, wherein the valve body is sequentially provided with an oil inlet valve, a middle oil cavity and an oil discharging cavity from top to bottom; the oil inlet cavity is formed in the upper end of the middle oil cavity, the oil discharging cavity is formed in the bottom end of the middle oil cavity, and the oil inlet cavity is communicated with the oildischarging cavity through the middle oil cavity. When the three-way joint is matched with a telescopic oil cylinder for use, the overflowing effect is relatively good, and oil is smoothly returned, so that the energy loss is reduced, and the working efficiency is improved; by arranging a spring group, the slippage resistance of a sliding core can be adjusted through adjusting the position of a baffling cover by an operator, and then the slippage resistance of a valve seat is adjusted; and by combining a manual oil supply manner through an oil control interface by the operator with an automatic resetting manner of a device through springs, the oil cut effect is relatively good, and the reliability of pressure control is guaranteed.

Description

Technical field [0001] The invention belongs to the technical field of hydraulic pipeline joints, and particularly relates to an explosion-proof forklift hydraulic pipeline three-way joint. Background technique [0002] Forklift trucks are widely used in the machinery industry because they are more convenient to carry goods. They are well known and common to the public. Forklifts mainly provide power to move goods through a set of hydraulic systems, so the hydraulic system of forklifts needs to have high reliability. Since the hydraulic system of the forklift is connected through many pipelines, and the pipeline connection direction is different, it needs to adopt many joints for transfer. When a forklift moves goods, a large instantaneous pressure will be generated in the pipeline, which will cause a greater impact on the pipeline, and may cause the joints to loosen or even loosen. Therefore, there is a hidden danger of safety accidents. The existing hydraulic pipes Due to the...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an explosion-proof forklift hydraulic pipeline tee joint to solve the problem that the existing hydraulic pipeline tee joint proposed in the above background technology has a certain unreasonable structural design, not only the overflow effect is not good, Moreover, when the piston rod of the telescopic oil cylinder is retracted, the oil return of the three-way valve will not be smooth, which will increase the back pressure and increase the hydraulic resistance, resulting in serious energy loss and low efficiency; at the same time, when the hydraulic oil station suddenly cuts off oil or When the staff needs to cut off the oil supply from the hydraulic oil station to the hydraulic telescopic cylinder, the three-way joint cannot block the return of the hydraulic oil in the cylinder to the hydraulic oil station in time, resulting in accidents and device damage caused by the sudden movement of the telescopic oil cylinder

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