Improved structure of lifting oil cylinder block one-way valve

Abstract

The invention discloses an improved structure of a lifting oil cylinder block one-way valve. The improved structure comprises a cylinder block. An oil cavity is formed in the cylinder block, a cavity opening of the oil cavity is formed in one side of the cylinder block, a valve rod is installed in the oil cavity in a sliding mode, a valve bush is installed on the valve rod, an oil outlet is formed in the top of the cylinder block, a cylinder barrel is installed on the cylinder block, a piston is vertically installed in the cylinder barrel in a sliding mode, a piston rod is installed in the piston, a buffer valve bush is installed in the piston rod, a buffer plunger is arranged in the buffer valve bush, the bottom end of the buffer plunger stretches into the oil outlet of the cylinder block, a valve port communicated with the oil cavity is vertically formed in the top, on one side of the oil outlet, of the cylinder block, a plug is installed on the top of the valve port, a vertical through cavity is formed in the plug, a steel ball is movably arranged at the joint of the valve port and the oil cavity, and the steel ball can plug the joint of the valve port and the oil cavity and the through cavity of the plug due to fact that the diameter of the steel ball is large enough. The improved structure is simple in improvement and ingenious, the one-way valve, a spring and a spring seat are removed, the valve bush is shortened, the purpose is well achieved only through the steel ball and the plug, cost is lowered, and the good effect is achieved.

Description

technical field [0001] The invention relates to the field of oil cylinders, and mainly relates to an improved structure of a one-way valve for a cylinder seat of a lifting oil cylinder. Background technique [0002] In the buffer type oil cylinder of the prior art, when the oil cylinder is lifted, due to the small working area of ​​the buffer plunger in the middle, the lifting speed is slow, so an oil circuit with a check valve is arranged on the cylinder base to increase the lifting speed of the oil cylinder . When descending, the one-way valve is in the closed state, and the oil circuit can only return oil from the buffer plunger and the buffer sleeve to play a buffering role. The oil cylinder with this structure has a relatively complex structure of the oil cylinder seat and valve sleeve. In actual machining, due to strict requirements on the relative position of the inner holes, the machining is difficult. At the same time, the check valve assembly is composed of check...

AI Technical Summary

Problems solved by technology

The structure of the cylinder seat and valve sleeve of this structure is relatively complicated. In actual processing, due to strict requirements on the relative position of the inner hole, the processing is difficult.

At the same time, the check valve assembly is composed of check valve, spring, spring seat and retaining ring. Due to manufacturing errors, it is easy to cause oil leakage of the check valve and affect the cushioning effect.

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