Oil supply mechanism and reset system of oil pump

Abstract

The invention relates to the technical field of electric hydraulic tools, in particular to an oil supply mechanism and a reset system of an oil pump, comprising: an oil supply seat, which is internally provided with an oil inlet, an oil outlet channel I and a plunger cavity; the at least two groups of plunger mechanisms are mounted in the plunger cavity; the connecting piece is used for connecting a power shaft; an eccentric part is arranged on the power shaft; the rotation of the power shaft is converted into the reciprocating motion of the connecting piece in the set direction; the two sides, in the set direction, of the connecting piece are connected with the plunger mechanisms respectively. The connecting piece is adopted to drive the plunger mechanism to move in a reciprocating mode, and oil feeding and resetting actions are achieved. By adopting the scheme, the moving stability of the plunger mechanism can be ensured, and the service life is ensured.

Description

technical field [0001] The invention relates to the technical field of electric hydraulic tools, in particular to an oil supply mechanism and a reset system of an oil pump. Background technique [0002] There are many types of electro-hydraulic tools, such as punching machines, shearing machines, crimping pliers, etc. A complete hydraulic tool system consists of five parts, namely power components, actuators, control components, auxiliary components and hydraulic oil. [0003] Existing hydraulic tools, such as Chinese patent 201020529262.4, discloses a hand-held steel bar quick-breaker, which is mainly composed of a rechargeable battery, a DC motor, a speed control switch, a hydraulic cylinder, a piston rod, and a blade. Plunger pump, relief valve, one-way valve, the blade is connected to the piston rod, the blade material is alloy steel or high-speed steel, the DC motor is powered by a rechargeable battery, the DC motor is connected to the hydraulic cylinder through a coup...

AI Technical Summary

Problems solved by technology

[0005] 1. The design of the existing piston assembly is to use the design of the plunger cap and the spring. After a long time of use, the spring will be broken or the spring will fail, resulting in the overall failure of the machine or low efficiency, such as poor hydraulic effect, or even It is caused by debris after the spring is broken, which enters the oil passage and causes blockage.

[0006] 2. When in use, because the metal itself has a certain degree of elasticity, it will retract, and the mold is likely to be clamped and stuck, resulting in the failure of the device to reset, affecting the normal use of the device and affecting the efficiency of the problem.

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