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Electric hydraulic jack and synchronous lifting control system

A technology of hydraulic jacks and jacks, which is used in fluid pressure actuation system testing, lifting devices, fluid pressure actuation devices, etc., can solve problems such as inconvenience in use and inconvenient control of lift by aircraft jacks, so as to ensure horizontal lifting and stable lifting. Effect

Pending Publication Date: 2021-07-23
上海航空机械有限公司
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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 provide an electro-hydraulic jack and a synchronous lifting control system to solve the technical problems of inconvenient control and use of the aircraft jack in the prior art

Method used

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  • Electric hydraulic jack and synchronous lifting control system
  • Electric hydraulic jack and synchronous lifting control system
  • Electric hydraulic jack and synchronous lifting control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] An electrohydraulic jack, see Figure 1 to Figure 11 .

[0041] Such as figure 1 and figure 2 As shown, the electro-hydraulic jack includes a bracket 1, a jack 2 is arranged on the bracket 1, and a hand pump 3 for driving the jack 2, and the bracket 1 includes three sets of supporting components arranged around the jack 2, such as figure 1 As shown, each group of supporting components includes a bottom connecting piece 11, an upper supporting rod 12 and a lower supporting rod 13, the bottom connecting piece 11 includes a screw sleeve 111 and a connecting plate 112, the upper supporting rod 12 is a cylinder, and the lower supporting rod 13 is a flat connecting rod, and the lower ends of the upper support rod 12 and the lower support rod 13 are hinged on the connecting plate 112 respectively.

[0042] Such as Figure 4 As shown, the upper end of the jack 2 is provided with a ring sleeve 22, the bottom of the jack 2 is provided with a lower end cover 21, and the perip...

Embodiment 2

[0055] A synchronous lift control system, see Figure 12 , Figure 13 and Figure 14 .

[0056] Such as Figure 12 As shown, the synchronous lifting control system includes three electro-hydraulic jacks in Embodiment 1, and the displacement sensor brackets on the brackets in each electro-hydraulic jack are equipped with displacement sensors for monitoring the lifting distance of the jack. The synchronous lifting control system also includes a control device, such as Figure 13 As shown, the control device includes a main controller 8, a display screen 81, and the displacement sensors installed on the display screen 81 and each electro-hydraulic jack, the first electromagnetic proportional valve, the second electromagnetic proportional valve and the motor are all signal-connected to the main controller , the main controller monitors the lifting height of each electro-hydraulic jack through the signal transmitted by the displacement sensor, so that the electro-hydraulic jack...

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PUM

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Abstract

The invention belongs to the technical field of hydraulic lifting devices, and particularly relates to an electric hydraulic jack and a synchronous lifting control system. The electric hydraulic jack is provided with an oil way distribution module, an oil inlet channel and an oil outlet channel are formed in the oil way distribution module, a first oil inlet and a second oil inlet are formed in the oil inlet channel, the hydraulic oil output end of a hand pump communicates to the second oil inlet, the output end of an oil pump communicates to the first oil inlet, and therefore the hand pump and the electrically-driven oil pump are ingeniously combined together to supply oil to the jack, and the jack is more convenient to work. The synchronous lifting control system comprises multiple electric hydraulic jacks, displacement sensors, first electromagnetic proportional valves, second electromagnetic proportional valves and motors on the electric hydraulic jacks are all in signal connection to a main controller, and therefore synchronous ascending and descending of the jacks can be controlled, jacking of an airplane is more stable in the jacking process of the airplane, and it is ensured that the airplane can ascend and descend horizontally.

Description

technical field [0001] The invention belongs to the technical field of hydraulic lifting devices, and in particular relates to an electro-hydraulic jack and a synchronous lifting control system. Background technique [0002] The aircraft jack is a hydraulic device used to lift the position of the wing and the fuselage. When the aircraft is performing level measurement, landing gear retraction test, replacement of wheels, target calibration, etc., it can be lifted by the aircraft jack support or lower the plane. [0003] In the prior art, the Chinese patent document whose publication number is CN104210983A records a kind of mechanical aircraft jack, and the Chinese patent document whose publication number is CN106742056A records a kind of aircraft jack that can automatically adjust and eliminate lateral force, and the publication number is CN105236292A The Chinese patent document records a kind of aircraft jack device, and the aircraft jacks recorded in the above-mentioned p...

Claims

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Application Information

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IPC IPC(8): B66F3/25F15B11/16F15B13/02F15B19/00
CPCB66F3/25F15B11/16F15B13/027F15B19/00
Inventor 张勇王荣张铁军
Owner 上海航空机械有限公司