Electro-hydraulic jack without external oil source

Abstract

The electro-hydraulic jack without the external oil source comprises a hydraulic cylinder, a valve block, an oil pump, a motor, an electromagnetic directional valve, a high-speed opening and closing valve and an electrical cabinet, the valve block and the electrical cabinet are arranged on the hydraulic cylinder, and the oil pump, the motor, the electromagnetic directional valve and the high-speed opening and closing valve are arranged on the valve block; the hydraulic cylinder comprises a hydraulic cylinder body, a piston and a piston rod; the hydraulic cylinder body is provided with an oil cavity; the piston divides the oil cavity into a rod cavity and a rodless cavity; a first oil hole and a second oil hole are formed in the hydraulic cylinder body; a runner system is arranged in the valve block; the power input end of the oil pump is connected with the power output end of the motor; an oil inlet of the oil pump is communicated with a second oil hole pipeline through an electromagnetic reversing valve and a high-speed opening and closing valve; an oil return opening of the oil pump is communicated with the first oil hole through an electromagnetic reversing valve; and a storage battery and a single chip microcomputer are arranged in the electrical box. The hydraulic jack has the beneficial effects that the use efficiency of the hydraulic jack is improved, and meanwhile, the hydraulic jack has the characteristic of avoiding an external oil source.

Description

technical field [0001] The invention relates to the related technical field of electro-hydraulic actuators, in particular to an electro-hydraulic jack without an external oil source. Background technique [0002] Since its research and development, electro-hydraulic actuators have been gradually used in various fields due to their strong reliability, high efficiency, good maintainability, excellent economy, and their superior performance. Today's hydraulic technology is tending to be lightweight, miniaturized, high power density, high pressure, and environmentally friendly. [0003] As a kind of equipment widely used in engineering construction and production and manufacturing, hydraulic jacks have disadvantages such as large oil tanks occupying a large area during the construction of traditional centralized oil source hydraulic actuation systems, and requiring a large number of oil pipelines. Contents of the invention [0004] The main purpose of the present invention is...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide an electro-hydraulic jack without an external oil source, which can solve the problem that the external oil source of the traditional hydraulic jack has a large footprint in the background technology.

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