Electric hydraulic tool

Abstract

The invention relates to the technical field of electric hydraulic tools, in particular to an electric hydraulic tool which comprises a driving device used for providing power; the oil pump device comprises a pump body and an oil supply mechanism; the execution device is connected with the oil pump device; and the oil control device is mounted on the oil pump device, and the front end of the oil control device is arranged in the execution device. Wherein the oil supply mechanism comprises an oil supply seat, an oil inlet, a first oil outlet channel and a plunger cavity are formed in the oil supply seat; the at least two groups of plunger mechanisms are mounted in the plunger cavities; 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 invention has the advantages of stable operation, low failure rate, ensured use efficiency and service life and the like.

Description

technical field [0001] The invention relates to the technical field of electric hydraulic tools, in particular to an electric hydraulic tool. 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 No. 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. The hydraulic cylinder is provided with a high-voltage 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 hydra...

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.

[0007] 3. The relative fixed angle of the grip and handle of the device is unchanged, and cannot be adjusted according to the usage scene or usage habits, which is inconvenient to use

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