Method and device for making magneto-rheological fluid flowing nonlinearly in magnetic gap space

Abstract

The present invention relates to process and device for the magnetic rheologic fluid to flow non-linearly in a magnetic gas space, and relates to magnetic rheologic fluid and magnetic rheologic fluid damper. The process includes the following steps: machining the pole of the first magnetizer into axial uneven structure, machining the pole of the second magnetizer into similar axial uneven structure, embedding the two uneven poles of the first magnetizer and the second magnetizer to form one magnetic gas space, and finally making magnetic rheologic fluid flow through the magnetic gas space.

Description

Technical field [0001] The invention relates to a fluid throttling device, a fluid damper, and a magnetorheological fluid damper of a hydraulic system, especially a magnetorheological fluid damper in a magnetorheological fluid shock absorber / shock absorber; A method and device for non-linear fluid flow in a magnetic gap space. Background technique [0002] Compared with the flow of traditional fluids, the flow of magnetorheological fluid has its own limited conditions. One is that the flow direction of magnetorheological fluid must be perpendicular to the direction of the magnetic field; secondly, the flow of magnetorheological fluid occurs in a very limited space, which is the magnetic gap space; , response time and a given magnetorheological fluid, the high pressure difference can be obtained in the following ways: one is to place the magnetorheological fluid at the maximum magnetic field strength and not greater than the magnetic field intensity In the magnetic gap spac...

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Problems solved by technology

[0003] A magneto-rheological fluid damping device such as US6471018B1 "Magneto-Rheological Fluid Device" (magneto-rheological fluid device) discloses a "Z"-shaped structure, and the "Z"-shaped structure is arranged in the inner cavity of the electromagnetic solenoid In the magnetic field, the circulation in a limited section and on different levels is realized, but the "Z" shape structure is processed on the same magnetic conductor of the piston head, although the flow direction is perpendicular to the direction of the magnetic field line, it is not enough The advantage is that the magnetic field strength in the flow channel processed on the same magnetic conductor is very weak, because most of the magnetic force lines are bypassed by the magnetic conductor, and the formed flow channel is theoretically not in the magnetic gap with dense magnetic force lines, so the magnetorheological effect is relatively strong. Weak, it is not obvious to increase the pressure difference of magnetorheological fluid

[0004] More importantly, US5353839 and US5452745 "Magnetorheological Valve and Devices Incorporating Magnetorheological Elements" (magnetorheological valve and its device containing magnetorheological elements) disclose another device that makes magnetorheological fluid non-linearly circulate in the magnetic gap space , its shortcoming is that the device does not make full use of the magnetic gathering magnetic gap in the inner cavity of the electromagnetic solenoid, but sets the magnetic gap space outside it; although it improves the non-linear circulation of the magnetorheological fluid in the magnetic gap space length, but at the cost of sacrificing the magnetic flux or magnetic field intensity per unit area, and the axis of the non-linear circulation of the magnetorheological fluid in the magnetic gap space is perpendicular to the direction of the magnetic field intensity in the magnetic gap space

[0005] China's authorized invention patent ZL031185517 (method and device for non-linear circulation of magnetorheological fluid in magnetic gap space) solves related problems, but only applies to internal flow baffle structure

As the diameter of the cylinder decreases (such as a bore of 30 mm), the space in the inner cavity of the electromagnetic solenoid also decreases, and it becomes difficult to set the baffle

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