Compact single-action hydraulic booster

Abstract

The invention relates to a compact single-action hydraulic booster. The compact single-action hydraulic booster is characterized in that a valve casing, a left cylinder with a plunger cavity, a rightcylinder with a plunger cavity, a T-shaped piston with an axial channel, a large valve element and a small valve element are included; and the diameter of the large valve element is larger than that of a valve opening , a plunger is arranged in the left cylinder and can slide left and right, and the inner end of the plunger is connected with the left end of an axial channel of the piston and can slide left and right along with the piston. The hydraulic booster is high in integrity and compact in size. Due to the fact that when the second outlet end of a first flow hole communicates with an oilreturn cavity and a left piston cavity, a certain distance exists between the left end and the right end of the piston and the bottom end faces of the corresponding cylinders, it is guaranteed that reversing of a reversing valve assembly can be completed before the piston collides with two end covers, colliding vibration is avoided, and the noise is low.

Description

technical field [0001] The invention belongs to a hydraulic booster, in particular to a compact single-acting hydraulic booster. Background technique [0002] The hydraulic booster is an ultra-high pressure hydraulic component that amplifies the hydraulic pressure by using the principle that the two ends of the piston have different acting areas and the same force, and the hydraulic booster can increase the low pressure to 200MPa and above. Hydraulic boosters can be divided into three types: single-acting single-stroke booster, single-acting reciprocating booster and double-acting reciprocating booster. Since the single-acting single-stroke supercharger can only move in one direction, the stroke is limited, the output flow is limited, it cannot achieve continuous supercharging, and its application range is narrow. The single-acting reciprocating supercharger can achieve continuous supercharging, but it can only supercharge one way, the utilization rate of oil source is only...

AI Technical Summary

Problems solved by technology

[0004] (1) Because the stroke reversing valve uses steel ball positioning and chains to maintain two positions, and controls the booster cylinder to move in different directions, the structure is complex and the processing is difficult

And the positioning of the steel ball is easy to fail, the chain is broken, and the stroke control reversing valve will be in the floating position, that is, the booster cylinder stops moving, so this control method is unreliable;

[0005] (2) When the piston moves to the end in one direction, the piston will collide with the end cover in the corresponding direction. During the continuous high-frequency movement, the continuous impact between the piston and the end cover will generate a lot of noise, and it will be unfavorable to the service life influences

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