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Hydraulic jack for aircraft

A technology for hydraulic jacks and aircraft, applied in the field of hydraulic jacks, can solve the problems of complex connecting pipelines and many hydraulic components, and achieve the effects of improving work efficiency, simple manufacturing process, and easy installation and operation.

Inactive Publication Date: 2020-05-05
国营四达机械制造公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the disadvantages of the prior art, such as many hydraulic components and complex connecting pipelines, and provide a hydraulic jack for aircraft

Method used

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  • Hydraulic jack for aircraft
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  • Hydraulic jack for aircraft

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and specific embodiment content of the present invention is described in further detail:

[0032] For the sake of convenience only, in the following description, specific direction terms are used, which are referred to the corresponding drawings, and cannot be considered as limitations on the present invention. When the defined directions of the drawings change, these The directions indicated by the words should be interpreted as corresponding different directions.

[0033] Such as Figure 1 to Figure 6 As shown, the present invention provides a hydraulic jack for an aircraft, including a frame assembly 100 , a ground support assembly 200 , a transport device 300 , a traction device 600 , a hydraulic cylinder 700 and a hydraulic operating unit 800 .

[0034] The hydraulic cylinder 700 sequentially includes an outer cylinder 706 , a piston rod 707 and a fine-tuning screw 701 from outside to inside, and a first O-ring 709 is a...

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Abstract

The invention provides a hydraulic jack for an aircraft. The hydraulic jack for the aircraft solves the problems that hydraulic elements are large is number, and connection pipelines are complex in the prior art. The hydraulic jack for the aircraft comprises a frame assembly, a ground foot supporting assembly, a hydraulic cylinder and a hydraulic operation unit, wherein the hydraulic operation unit comprises an oil tank, a pump and a valve sliding block assembly, the valve sliding block assembly comprises a valve block body, a safety valve assembly, a one-way valve assembly and a manual valve,a first flow passage, a second flow passage, a third flow passage, a safety valve cavity and a one-way valve cavity are arranged in the valve block body, an inlet of the first flow passage is connected with an oil outlet of the oil tank, an outlet of the first flow passage is connected with an inlet of the second flow passage through the pump, an outlet of the second flow passage is connected with an inlet of the third flow passage through the one-way valve cavity, the third flow passage is provided with two outlets, one outlet is connected with an oil return opening of the oil tank through the manual valve, the other outlet is connected with the hydraulic cylinder, the first flow passage and the second flow passage are connected through the safety valve cavity, and the safety valve assembly and the one-way valve assembly are arranged in the safety valve cavity and the one-way valve cavity respectively.

Description

technical field [0001] The invention relates to the field of hydraulic jacks, in particular to a hydraulic jack for aircraft using a core module. Background technique [0002] Jacks are needed to support the aircraft during ground assembly, maintenance and level measurement of the aircraft. The hydraulic system in the existing aircraft hydraulic jack is mainly composed of fuel tank, oil filter, one-way valve, hand pump, safety valve, transfer switch, hydraulic cylinder, air filter, pipe joint, connecting pipeline, etc. Assembled through pipeline connection, its working principle is to pressurize the hydraulic oil in the oil tank through the hand pump after the oil filter, and inject it into the hydraulic cylinder through the one-way valve, so that the piston rod rises and jacks up the aircraft; when the pressure exceeds the rated value At the same time, the oil returns to the oil tank through the safety valve; the oil in the hydraulic cylinder is returned to the oil tank by...

Claims

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Application Information

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IPC IPC(8): B66F3/24B66F3/25
CPCB66F3/24B66F3/25
Inventor 乔旭安伟付少利齐晓荣巩克
Owner 国营四达机械制造公司
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