Multistep assemblied anti-settle magnetic rheological damper

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

[0014] like Figure 1-3 The multi-stage assembled anti-settling magneto-rheological damper includes a cylinder 3, an end cover 4, a piston, a piston rod 2, and a throttling flow is arranged between the inner wall of the cylinder 3 and the outer wall of the piston. Road 7, the piston includes multiple groups of magnetically conductive piston disks that are sleeved on the piston rod 2 and each group is composed of two magnetically conductive piston disks 5, and the two magnetically conductive piston disks of each group of magnetically conductive piston disks There is a permanent magnet piston disc 6 set on the piston rod between them, and its magnetic strength is preferably 5000-8000 gauss. In order to increase its shear strength, its surface should have a high-strength coating, which can be zinc, nickel, etc. plating. A magnetic conduction sleeve 8 sleeved on the piston rod is arranged between the adjacent magnetic conduction piston discs of adjacent groups, and an excitation coil 9 is wound outside the magnetic conduction sleeve. When in use, earrings 1 can be assembled at both ends of the piston rod, and the cylinder barrel is filled with magnetorheological fluid 10 .

[0015] Working principle: When in use, the reciprocating external force at both ends of the damper pushes the piston rod 2, and the magneto-rheological fluid 10 in the chambers on both sides of the cylinder 3 will pass through the throttle channel 7, and a force perpendicular to the flow direction of the fluid is applied to the throttle channel area. During the magnetic field, the magnetorheological fluid 10 is semi-solidified, and the magnetic particles form chains along the direction of the magnetic field. Due to the existence of the permanent magnetic piston disc 6 in the present invention, the damping force is improved and the value range of the current is reduced; in addition, in the non-working state , since the permanent magnetic piston disc 6 can provide a fixed magnetic field, the magnetic particles in the magnetorheological fluid 10 continue to be arranged in chains along the direction of the magnetic field, effectively preventing the magnetorheological fluid from settling, image 3 The schematic diagram of the magnetization of the permanent magnet piston disc is shown, the magnetization direction is radial, and the N and S directions of the inner and outer edges can be set respectively according to actual needs.