CN102297230A

CN102297230A - Double-outstretch pole plate magneto-rheological damper

Info

Publication number: CN102297230A
Application number: CN2011102391792A
Authority: CN
Inventors: 谭和平; 谢宁; 刘强; 谭晓婧
Original assignee: 谢宁
Priority date: 2011-08-19
Filing date: 2011-08-19
Publication date: 2011-12-28
Anticipated expiration: 2031-08-19
Also published as: CN102297230B

Abstract

The invention discloses a double-outstretch pole plate magneto-rheological damper which comprises two piston rods, a plate piston, a magnetic field generator and a working cylinder; the longitudinal section of the plate piston comprises two rectangular symmetric short sides and semi-circles with rectangular short sides being the diameters; the two short sides are respectively connected with one semi-circle; an excitation coil is wound in the middle part of the plate piston; the shape of the longitudinal section of the inner cavity of the working cylinder is totally the same with that of the longitudinal section of the plate piston; the longitudinal sectional area of the inner cavity of the working cylinder is larger than the longitudinal sectional area of the plate piston; a magneto-rheological fluid flow gap is left between the outer peripheral wall of the plate piston and the inner peripheral wall of the working cylinder; one ends of the two piston rods are respectively fixed with both ends of the plate piston, and the other ends of the two piston rods extend out from both ends in the working cylinder respectively through a seal device and a bearing on both ends of the working cylinder; a lead-out wire of the excitation coil is led out outside the working cylinder through a central holes of the piston rods, and magneto-rheological fluid is fully filled in the working cylinder.

Description

The board-like MR damper of two rods

Technical field

The invention belongs to a kind of MR damper, be specifically related to a kind of pair of board-like MR damper of rod.

Background technique

The internal structure of common two outstretch pole magnetorheological dampers is in the two ends symmetry of cylinder bodily form piston two piston rods to be installed, when piston moves in clutch release slave cylinder, another root piston rod withdraws from clutch release slave cylinder when a piston rod enters clutch release slave cylinder, to keep the constancy of volume in the clutch release slave cylinder, be suitable for occasions such as bridge vibration damping because of the symmetry properties of two outstretch pole magnetorheological damper output damping forces is good, but existing pair of outstretch pole magnetorheological damper mostly is the cylinder bodily form, tubular pair of installation and the working environment that outstretch pole magnetorheological damper is difficult to be applicable to that some are narrow greatly owing to diameter, and the of the present invention pair of board-like MR damper of rod compared with common two outstretch pole magnetorheological dampers, under the clutch release slave cylinder condition identical with effective work area between the piston, applicable to some narrow installation and working environment, expanded the application area of two outstretch pole magnetorheological dampers.

Summary of the invention

The present invention is directed to common two outstretch pole magnetorheological dampers and be difficult to be applicable to the narrow installation and the deficiency of working environment, proposed a kind of novel MR damper, that is: a kind of pair of board-like MR damper of rod.

Technological scheme of the present invention is as follows:

A kind of pair of board-like MR damper of rod, it comprises two piston rods, board-like piston, clutch release slave cylinder; Wherein, the longitudinal plane of board-like piston is that to connect one respectively by rectangular two symmetrical minor faces be that the semicircle of diameter constitutes with the rectangular minor face, and the shaft axis of board-like piston is by the mid point of the connecting line in two semicircle centers of circle of board-like piston; Be wound with field coil in board-like middle of piston, add protective layer outside field coil, protective layer flushes with the periphery wall of board-like piston; The longitudinal plane shape of clutch release slave cylinder inner chamber and the longitudinal plane shape of board-like piston are identical, and the longitudinal plane area of clutch release slave cylinder inner chamber leaves the mobile gap of magnetic flow liquid greater than the longitudinal plane area of board-like piston between board-like piston periphery wall and clutch release slave cylinder inner circle wall; The external diameter of two piston rods is identical, wherein a piston rod has center hole, one end of two piston rods fix with board-like piston two ends respectively and piston rod coaxial with board-like piston, the other end of two piston rods stretches out from the two ends in the clutch release slave cylinder by the seal arrangement and the bearing at clutch release slave cylinder two ends respectively, has been full of magnetic flow liquid in clutch release slave cylinder.It is outer and board-like piston and clutch release slave cylinder adopt high magnetic conductive metal material that the center hole of the lighting outlet of field coil by a piston rod leads to clutch release slave cylinder.

The of the present invention pair of board-like MR damper of rod compared with common two outstretch pole magnetorheological dampers, because the profile of two board-like MR damper of rod is a pancake, the thickness of this pancake clutch release slave cylinder can guarantee to adjust under the constant condition of the effective work area between clutch release slave cylinder and the piston and satisfy the demand, therefore, the of the present invention pair of board-like MR damper of rod compared with common two outstretch pole magnetorheological dampers, be applicable to narrow working environment more, expanded the application area of two outstretch pole magnetorheological dampers thus.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention.

Fig. 2 is the longitudinal plane schematic representation at the A-A place among Fig. 1.

Fig. 3 is the longitudinal plane schematic representation at the B-B place among Fig. 1

Embodiment

Describe structure of the present invention in detail below in conjunction with accompanying drawing:

Referring to Fig. 1, Fig. 2 and Fig. 3, this is a kind of concrete structure of the present invention, a kind of pair of board-like MR damper of rod, and it comprises piston rod 1 and piston rod 17, board-like piston 13, clutch release slave cylinder 5; The longitudinal plane of board-like piston 13 is two symmetrical minor faces at rectangular ABCD

Figure 2011102391792100002DEST_PATH_IMAGE001

And minor face

Connect one respectively with the rectangular minor face

(or

) for the semicircle R1(center of circle of diameter be: Y1) and the semicircle R2(center of circle be: Y2) constitute (referring to Fig. 2); The shaft axis of board-like piston 13 by board-like piston 13 two semicircle center of circle Y1 and the mid point X(of the connecting line of center of circle Y2 referring to Fig. 3), be wound with field coil 9 at the middle part of board-like piston 13, add protective layer 8 outside field coil 9, protective layer 8 flushes with the periphery wall of board-like piston 13; The longitudinal plane shape of the inner chamber 16 of clutch release slave cylinder 5 and the longitudinal plane shape of board-like piston 13 are identical, and the longitudinal plane area of the inner chamber 16 of clutch release slave cylinder 5 leaves the mobile gap 7 of magnetic flow liquid greater than the longitudinal plane area of board-like piston 13 between board-like piston 13 periphery walls and clutch release slave cylinder 5 inner circle walls; Piston rod 1 is identical with the diameter of piston rod 17, piston rod 1 has center hole 2, one end of piston rod 1 and piston rod 17 is fixed with the two ends of board-like piston 13 respectively and is coaxial with board-like piston 13, and the other end of piston rod 1 and piston rod 17 stretches out from the two ends in the clutch release slave cylinder 5 by seal arrangement 4 and bearing 3, seal arrangement 11 and the bearing 12 at clutch release slave cylinder 5 two ends respectively; It is outer and be connected with control power supply 15 that the fairlead 6 of the lighting outlet 14 of field coil 9 by board-like piston 13 and the center hole 2 of piston rod 13 lead to clutch release slave cylinder 5; Board-like piston 13 and clutch release slave cylinder 5 adopt high magnetic conductive metal material; In clutch release slave cylinder 5, be full of magnetic flow liquid 10.

The board-like MR damper working condition of two rods is such: when piston rod 1 promotes board-like piston 13 to the right and moves in clutch release slave cylinder 5, board-like piston 13 will push the magnetic flow liquid 10 of clutch release slave cylinder 5 right-hand members, make the magnetic flow liquid 10 of right-hand members in the clutch release slave cylinder 5 mobile to clutch release slave cylinder 5 left ends from clutch release slave cylinder 5 right-hand members with the gap 7 between the clutch release slave cylinder inner circle wall by board-like piston 13 periphery walls, piston rod 17 withdraws from the clutch release slave cylinder 5 to the right with compensating piston bar 1 and enters in the clutch release slave cylinder 5 and cause volume-variation in the clutch release slave cylinder 5 when piston rod 1 promotes board-like piston 13 to the right and enters in the clutch release slave cylinder 5; When control power supply 15 not during output current, field coil 9 no electric circuits at board-like piston 13 middle parts, magnetic intensity in the gap 7 between board-like piston 13 periphery walls and the clutch release slave cylinder inner circle wall is zero, and when piston rod 1 promoted board-like piston 13 to the right and moves in clutch release slave cylinder 5, suffered damping force was less; Behind control power supply 15 output currents, field coil 9 energisings at board-like piston 13 middle parts, to produce bigger magnetic intensity in the gap 7 between board-like piston 13 periphery walls and clutch release slave cylinder 5 inner circle walls, at this moment, when piston rod 1 promoted board-like piston 13 to the right and moves in clutch release slave cylinder 5, suffered damping force was bigger; Therefore, by adjusting the size of electric current in the field coil 9 that control power supply 15 is input to board-like piston 13 middle parts, can make the damping force of the board-like MR damper output of two rods controlled, situation when piston rod 1 promotes board-like piston 13 left and moves in clutch release slave cylinder 5 is not being given unnecessary details to similar herein.

Claims

1. two board-like MR damper of rod, it comprises two piston rods, board-like piston, clutch release slave cylinder; It is characterized in that: the longitudinal plane of described board-like piston is that to connect one respectively by rectangular two symmetrical minor faces be that the semicircle of diameter constitutes with the rectangular minor face, the shaft axis of board-like piston is by the mid point of the connecting line in two semicircle centers of circle of board-like piston, be wound with field coil in board-like middle of piston, add protective layer outside field coil, protective layer flushes with the periphery wall of board-like piston; The longitudinal plane shape of described clutch release slave cylinder inner chamber and the longitudinal plane shape of board-like piston are identical, and the longitudinal plane area of clutch release slave cylinder inner chamber leaves the mobile gap of magnetic flow liquid greater than the longitudinal plane area of board-like piston between board-like piston periphery wall and clutch release slave cylinder inner circle wall; The diameter of described two piston rods is identical, wherein a piston rod has center hole, one end of two piston rods fix with board-like piston two ends respectively and piston rod coaxial with board-like piston, the other end of two piston rods stretches out from the two ends in the clutch release slave cylinder by the seal arrangement and the bearing at clutch release slave cylinder two ends respectively, has been full of magnetic flow liquid in clutch release slave cylinder.

2. the board-like MR damper of a kind of pair of rod as claimed in claim 1 is characterized in that the lighting outlet of described field coil leads to outside the clutch release slave cylinder by the center hole of a piston rod; Described board-like piston and clutch release slave cylinder adopt high magnetic conductive metal material.