Compact type hydraulic supercharger

Abstract

The invention relates to a compact type hydraulic supercharger. The compact type hydraulic supercharger is characterized by comprising a valve shell, a left cylinder body with a left plunger cavity, aright cylinder body with a right plunger cavity, a T-shaped piston with an axial channel, a large valve core, a small valve core, a left plunger and a right plunger, wherein the diameter of the largevalve core is larger than that of a valve port, the left plunger is arranged in the left cylinder body and can slide leftward and rightward, the inner end of the left plunger is connected with the left end of the axial channel of the piston and can slide leftward and rightward along with the piston, and the inner end of the right plunger is connected with the right end of the axial channel of thepiston and can slide leftward and rightward along with the piston. The compact type hydraulic supercharger is high in integration level and compact in size. When the second outlet end of a first through-flow hole communicates with an oil return cavity and the left plunger cavity, the left end and the right end of the piston both have certain distances from the bottom surfaces of the correspondingcylinder bodies, so that the effect that reversing of a hydraulic operated directional valve assembly is completed before the piston collides with two end covers is guaranteed. Thus, no impact vibration is generated, and noise is low.

Description

technical field [0001] The invention belongs to a hydraulic booster, in particular to a compact 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 half, and the...

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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