Nano-magnetic fluid clearance sealing high-speed hydraulic cylinder

A nano-magnetic fluid and hydraulic cylinder technology, applied in the direction of fluid pressure actuation devices, etc., can solve the problems of fatigue and hydraulic cylinders that are difficult to meet the sealing and lubricity at the same time, so as to reduce interference, realize self-adaptive regulation, and avoid dry friction Effect

Active Publication Date: 2021-12-17
KUNMING UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a nano-magnetic fluid hydraulic cylinder with nano-magnetic fluid as the working medium to solve the problem that the high-speed operation of the hydraulic cylin

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  • Nano-magnetic fluid clearance sealing high-speed hydraulic cylinder
  • Nano-magnetic fluid clearance sealing high-speed hydraulic cylinder
  • Nano-magnetic fluid clearance sealing high-speed hydraulic cylinder

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[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] like figure 1 As shown, a nano-magnetic fluid gap-sealed high-speed hydraulic cylinder includes a piston rod 1, a cylinder cover 2 with a rod cavity, an oil port 3 in a rod cavity, an electromagnet 4, a buffer cavity with a rod cavity 5, a cylinder barrel 6, and a rod. Cavity buffer head 7 , piston 8 , micromagnetic array functional surface 9 , rodless cavity buffer head 10 , rodless cavity buffer cavity 11 , rodless cavity oil port 12 , non-inductive cavity cylinder head 13 .

[0045] The rod cavity cylinder cover 2 is provided with a rod cavity oil port 3 and a rod cavity buffer cavity 5 communicating with the rod cavity oil port 3 , and the rod cavity buffer cavity 5 is located in the middle of the rod cavity cylinder cover 2 .

[0046] One end of the piston 8 is provided with a rod cavity buffer head 7 , and the other end is provided wi...

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Abstract

The invention relates to a nano-magnetic fluid clearance sealing high-speed hydraulic cylinder and belongs to the technical field of hydraulic transmission. The nano-magnetic fluid clearance sealing high-speed hydraulic cylinder comprises a piston rod, a rod cavity cylinder cover, a rod cavity oil port, electromagnets, a rod cavity buffering chamber, a cylinder barrel, a rod cavity buffering head, a piston, a micro-magnetic array functional surface, a rodless cavity buffering head, a rodless cavity buffering chamber, a rodless cavity oil port and a rodless cavity cylinder cover. According to the nano-magnetic fluid clearance sealing high-speed hydraulic cylinder, nano-magnetic fluid is taken as a working medium, is good in dispersion stability and fluidity, and has good magnetic-viscous regulation and control characteristic; the electromagnets are arranged to regulate and control the viscosity of the nano-magnetic fluid medium of the buffering chamber, so that the buffering performance of the hydraulic cylinder is improved; the piston and the cylinder barrel are sealed by a clearance sealing mode; the micro-magnetic array functional surface arranged on the piston is coupled with the nano-magnetic fluid to form a lubricating film, so that the lubricating and sealing characteristics are improved, and the high-speed performance of the hydraulic cylinder is facilitated.

Description

technical field [0001] The invention relates to a nano-magnetic fluid gap-sealed high-speed hydraulic cylinder, which belongs to the technical field of hydraulic transmission. Background technique [0002] Nano-magnetic fluid is a kind of intelligent fluid with both magnetic properties and fluidity formed by magnetic particles with a particle size of less than 10nm uniformly dispersed in the base fluid. Its viscosity will increase rapidly (in milliseconds) under the action of a magnetic field. This change is Controllable and reversible, called magnetorheological effect. Compared with magnetorheological fluid (micron-sized particle size) and ordinary magnetic fluid (1-100nm particle size), the performance of nano-magnetic fluid is more stable, and it is not easy to coagulate or precipitate. It has the advantages of fluidity, sealing, and lubricity. Hydraulic transmission characteristic requirements. The application of nano-magnetic fluids to hydraulic transmission media has...

Claims

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Application Information

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IPC IPC(8): F15B15/17F15B15/14F15B15/22
CPCF15B15/17F15B15/1447F15B15/1438F15B15/1428F15B15/1423F15B15/22
Inventor 蒋佳骏吴张永朱启晨莫子勇叶艺明叶淳健张沧
Owner KUNMING UNIV OF SCI & TECH
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