Seal structure of dual-rod magnetorheological fluid damper
A technology of magnetorheological fluid and sealing structure, applied in shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems of high cost, short service life, difficult sealing, etc., and achieve improved performance and low price. , The effect of convenient operation and loading and unloading
Inactive Publication Date: 2015-03-04
SHANGHAI INST OF TECH
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Problems solved by technology
[0005] In order to solve the technical problems of high cost, difficult sealing and short service life of the traditional damper, the present invention provides a sealing structure of a magnetorheological fluid damper with two rods, which is not only low in cost, but also economical and practical, and has a long service life
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[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] Such as figure 1 As shown, the sealing structure of the double-rod magnetorheological damper of the present invention includes a PTFE gasket 1 with a groove inside, a copper gasket 2, a liquid injection bolt hole 3, a cylinder body 4, and a compression screw hole 5 , End cap 6, piston 7, coil wire 8, O-ring 9, excitation coil 10. Among them, the PTFE gasket 1 is made of PTFE material, with a groove inside for placing the O-ring 9, the cylinder body 4 and the piston 7 are both cylindrical, and are made of high magnetic permeability material 20 steel; the end cover 6 Made for metals with low magnetic permeability such as copper.
[0017] Between the two ends of the cylinder 4 and the piston rod of the piston 7, there are respectively a tetrafluoro gasket 1 and a copper gasket 2 for sealing, and the inner surface of the tetrafluoro gasket 1 is clo...
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The invention relates to a dual-rod magnetorheological fluid damper and a seal structure thereof. A teflon gasket and a copper gasket are respectively arranged between both ends of a cylinder block and a piston rod of a piston; the inner side face of the teflon gasket is abutted onto the step face of the end face of the cylinder block through the copper gasket; the outer side face of the teflon gasket is connected with an end cover; the fit joint of the teflon gasket and the piston rod of the piston is provided with a groove; and an O-shaped ring used for sealing the piston rod is arranged in the groove. As the combined seal structure that the O-shaped ring is embedded in the teflon gasket is adopted, the dual-rod magnetorheological fluid damper is simple and compact in structure, convenient in operation, assembly and disassembly and low in price, and moreover, the dual-seal performance and effect are excellent, and the service life of the magnetorheological fluid damper and the service life of a like product can be prolonged. The structure that the seal part is compressed tightly by a copper sheet and the additional end cover is fastened by additional bolts, thus, the coaxiality of the magnetorheological fluid damper and the parallelism between the piston and the cylinder block can be flexibly regulated, and the performance of the magnetorheological fluid damper can be further improved. Moreover, the dual-rod magnetorheological fluid damper has a reference function for designing traditional oil pressure dampers.
Description
technical field [0001] The invention relates to a dual-rod magnetorheological fluid damper, in particular to a sealing structure of a double-rod magnetorheological fluid damper. Background technique [0002] The magnetorheological fluid damper is an adjustable damping device using magnetorheological fluid as the working fluid. The mechanical properties of the magnetorheological fluid damper can be continuously controlled by an external magnetic field. The working fluid is a magnetorheological fluid, which is mainly composed of carrier fluid, magnetic particles and additives. When there is no external magnetic field, the magnetic fluid exhibits the characteristics of a low-viscosity Newtonian fluid. Once an external magnetic field is added, it will appear as a high-viscosity fluid. Viscosity in a semi-solid state. Because magnetorheological fluid dampers have the advantages of wide adjustable range, fast response speed, low power consumption, and simple structure, they have ...
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IPC IPC(8): F16F9/36F16F9/53F16F9/32
Inventor 刘旭辉廖华栋姚行艳李芳
Owner SHANGHAI INST OF TECH