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Speed adjusting hydraulic cylinder

A technology of hydraulic cylinder and speed regulation, applied in the field of hydraulic cylinder, can solve the problem that the hydraulic cylinder does not have the function of speed regulation, and achieve the effect of high speed control accuracy and convenient adjustment

Inactive Publication Date: 2012-01-18
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unlike hydraulic motors that can adjust the output speed by changing the displacement, the hydraulic cylinder itself does not have the function of speed regulation

Method used

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] like figure 1 As shown, a magneto-rheological fluid gas-liquid damping cylinder includes a working cylinder barrel 8 and a speed regulating cylinder barrel 10, a middle cylinder head 9 connects the working cylinder barrel 8 and the speed regulating cylinder barrel 10 into one body, and the piston The rod 6 connects the working cylinder piston 5 and the speed regulating cylinder piston 11 into one body, the piston rod extension end of the working cylinder cylinder 8 is equipped with the front cylinder cover 7, and the tail end of the speed regulating cylinder cylinder 10 is equipped with the rear cylinder cover 13 . A speed-regulating damping pipe 3 is installed in parallel with the speed-regulating cylinder, and the speed-regulating damping pipe 3 can also be many, set as required. The speed-adjustable hydraulic cylinder utilizes the rheologi...

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Abstract

The invention discloses a speed adjusting hydraulic cylinder. The hydraulic cylinder comprises a working cylinder barrel and a speed adjusting cylinder barrel which are connected into a whole through a middle cylinder head, wherein the end of the speed adjusting cylinder barrel is provided with a back cylinder head; the end of the working cylinder barrel is provided with a front cylinder head; a working cylinder piston is arranged in the working cylinder barrel; a speed adjusting cylinder piston is arranged in the speed adjusting cylinder barrel; a piston rod positioned in the working cylinder barrel and the speed adjusting cylinder barrel passes through the middle cylinder head; one end of the piston rod is connected with the speed adjusting cylinder piston, and the other end of the piston rod stretches out of the front cylinder head; the working cylinder piston is arranged on the piston rod; the working cylinder barrel is provided with an oil inlet and an oil return port; magnetorheological fluid is filled in the speed adjusting cylinder barrel; a damping pipe made from a magnetic conductive material is connected in parallel with the speed adjusting cylinder barrel; two ends of the damping pipe are connected with two side cavities of the speed adjusting cylinder piston; a damping hole is formed in the damping pipe; and an electromagnetic coil is arranged on the outer side of the damping hole. The hydraulic cylinder conveniently adjusts the speed and is high in speed control accuracy.

Description

technical field [0001] The invention relates to a hydraulic cylinder, in particular to a hydraulic cylinder which can automatically adjust the movement speed. Background technique [0002] The hydraulic cylinder is the actuator in the hydraulic system, which is used to drive the working mechanism to achieve linear reciprocating motion or reciprocating swing. It is widely used in hydraulic system. Unlike hydraulic motors, which can adjust the output speed by changing the displacement, the hydraulic cylinder itself does not have the function of speed regulation. If it is necessary to adjust the output movement speed of the hydraulic cylinder, there must be a corresponding speed control circuit and a speed switching circuit to match it. Throttle valves, speed control valves and other supporting hydraulic components are required. The hydraulic circuit formed is often very It is huge and involves many hydraulic components. The speed-adjustable hydraulic cylinder designed accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/22
Inventor 赵家文
Owner NANJING VOCATIONAL UNIV OF IND TECH
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