CN207989636U - A kind of MR damper with helical spring floating piston arrangement - Google Patents
A kind of MR damper with helical spring floating piston arrangement Download PDFInfo
- Publication number
- CN207989636U CN207989636U CN201820437301.4U CN201820437301U CN207989636U CN 207989636 U CN207989636 U CN 207989636U CN 201820437301 U CN201820437301 U CN 201820437301U CN 207989636 U CN207989636 U CN 207989636U
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- Prior art keywords
- end cap
- damper
- piston head
- piston
- left end
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Abstract
The utility model discloses a kind of MR dampers with helical spring floating piston arrangement, are mainly made of piston rod, attenuator end cap, damper cylinder body, piston head end cap, piston head sleeve, floating piston, spring support, helical spring and magnet exciting coil etc..There are three waist typed through hole for the axial uniformly processing of piston head or so end cap, can be used as the fluid course of magnetorheological fluid.Floating piston is connect with damper right end cap by helical spring.When magnet exciting coil is passed through electric current, piston head can move back and forth in damper cylinder body, due to the effect of helical spring, floating piston operating position can be made to be maintained in a stability range, to make piston head working region remain unchanged so that damper exports the controllable damping force of continuous-stable.The utility model uses the structure with helical spring floating piston, the stability of damper output damping force is further increased, especially suitable for the industries vibration insulating system such as railway, traffic.
Description
Technical field
The utility model is related to a kind of MR dampers more particularly to a kind of with helical spring floating piston arrangement
MR damper.
Background technology
MR damper is mainly used to the vibration of control system device generation, does not meet various kinds of equipment to different operating modes and not
With the requirement under environment.Therefore the performance of MR damper directly influences the static and dynamic performance and work of various systems
Make reliability, is the core cell in vibration insulating system.
Traditional MR damper winds magnet exciting coil in piston head winding slot, and most of magnetic field is equal in damping clearance
It is parallel to magnetorheological fluid channel.In addition, floating piston is placed in inside cylinder barrel, the buffering area between floating piston and end cap is full of nitrogen
Gas.The single line ring MR damper designed at present damping clearance that effectively works is mostly between single circular ring shape liquid stream damping
Gap, by the way that under identical input current, the magnetic induction in effective damping gap is improved as far as possible in magnetorheological fluid saturation range
The method of intensity improves damping force, but since piston head moves back and forth, the nitrogen temperature in buffering area can be made to increase, to make
Buffer area becomes larger, and the working region of piston head is caused to become smaller, and damping force reduces and the damping force exported is unstable.
Based on this, the magnetic current that a kind of structure relative compact, output damping force is big, piston head work effective coverage is constant is designed
Variable damping device is the premise for further widening MR damper commercial Application.
Invention content
Demand, the utility model are actually used in order to solve the problems, such as background technology and meet MR damper
It is proposed a kind of MR damper with helical spring floating piston arrangement.It is slow between floating piston and damper right end cap
It rushes area and helical spring is installed, replace original air spring.When damper works, the reciprocating motion of piston head leads to buffering area
Volume changes；The recovery of buffering area volume relies on helical spring, so that piston head working region is unaffected.
The utility model uses the floating piston with helical spring, further increases the stability of damper output damping force, special
It Shi Yongyu not the industries vibration insulating system such as railway traffic.
Technical solution includes used by the utility model solves its technical problem：Left lifting lug (1), piston rod (2), damping
Device left end cap (3), piston head left end cap (5), piston head sleeve (6), piston head right end cap (7), floats at damper cylinder body (4)
Piston (8), damper right end cap (9), right lifting lug (10), spring right part holder (11), helical spring (12), spring left part holder
(13), fastening nut (14) and magnet exciting coil (15)；It is machined with internal thread hole among left lifting lug (1) right end；Piston rod (2) is processed
Into a ladder, left end external peripheral surface is machined with external screw thread；Left lifting lug (1) right end and piston rod (2) left end are solid by screw thread
Fixed connection；Damper left end cap (3) is fixedly connected with damper cylinder body (4) by screw, and is sealed by a seal ring；Resistance
Circular through hole, piston rod (2) and damper left end cap (3) circular through hole internal surface gaps are machined among Buddhist nun's device left end cap (3)
Cooperation, and be sealed by a seal ring；Piston head left end cap (5) is machined with central through hole, center through-hole inner surface and work
Stopper rod (2) right end outer surface clearance fit；Piston head left end cap (5) passes on left shoulder on the right side of piston rod (2) and axially determine
Position；It is interference fitted on the left of piston head right end cap (7) on the right side of piston head left end cap (5)；Piston head sleeve (6) left side and right end
Face is machined with boss respectively, and left side boss is interference fitted with piston head left end cap (5) right-hand end, right side boss with
Piston head right end cap (7) left end is interference fitted；Piston head left end cap (5), piston head right end cap (7), piston head sleeve (6)
It is fixedly connected by fastening nut (14) with piston rod (2)；Floating piston (8) circumferential outer surface and damper cylinder body (4) circumference
Internal surface gaps coordinate, and are sealed by a seal ring；Floating piston (8) right side is machined with cylindrical projection point, bullet
Spring left part holder (13) is mounted on cylindrical projection point；Helical spring (12) one end is inserted in spring left part holder (13), separately
Spring right part holder (11) is inserted into one end；Damper right end cap (9) left end is machined with cylindrical projection point, spring right part holder
(11) it is mounted on cylindrical projection point；Piston head left end cap (5) and formation circular ring shape among piston head right end cap (7) are recessed
Slot, magnet exciting coil (15) uniform winding is in toroidal cavity；Piston head left end cap (5), piston rod (2) and left lifting lug (1)
It is machined with fairlead, the lead of magnet exciting coil (15) passes sequentially through above-mentioned fairlead and draws；Damper right end cap (9) and damping
Device cylinder body (4) is fixedly connected by screw, and is sealed by a seal ring；It is machined with internal thread among right lifting lug (10) left end
Hole；It is machined with external screw thread on the right side of damper right end cap (9), the two is connected by screw threads for fastening.
The utility model compared with the background art, has an advantageous effect in that：
（1）The utility model increases helical spring between floating piston and damper right end cap, effectively avoids
Because damper work causes piston head to move back and forth, air spring liter in buffer area between floating piston and damper right end cap
Buffer area volume caused by temperature increases, and to solve the problems, such as that piston head working region reduces, makes floating piston operating position
It is constant, it ensure that damper can export the damping force of continuous-stable so that the performance of MR damper is more stable.
（2）In the utility model MR damper course of work, the buffering between floating piston and damper right end cap
Area's temperature does not have significant change, reduces influence of the temperature to magnetorheological fluid, ensure that the stability of damper performance.
Description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model magnetic line of force distribution schematic diagram.
Fig. 3 is the utility model piston head left end cap left view.
Specific implementation mode
Fig. 1 is the utility model structure diagram, mainly by left lifting lug (1), piston rod (2), damper left end cap (3),
Damper cylinder body (4), piston head left end cap (5), piston head sleeve (6), piston head right end cap (7), floating piston (8), damping
Device right end cap (9), right lifting lug (10), spring right part holder (11), helical spring (12), spring left part holder (13), fastening spiral shell
Female (14) and magnet exciting coil (15) composition.
Fig. 2 is the utility model magnetic line of force distribution schematic diagram.Piston head left end cap (5), piston head sleeve (6), piston head
Right end cap (7) and piston rod (2) are made of mild steel permeability magnetic material, when being passed through electric current to magnet exciting coil (15), due to electromagnetism
Induction generate the magnetic line of force pass sequentially through piston head left end cap (5), piston head sleeve (6), piston head right end cap (7) and
Piston rod (2) forms closed circuit.
Fig. 3 is the utility model piston head left end cap left view.It is machined among piston head left end cap (5) round logical
Hole, piston rod (2) pass through circular through hole and chock plug left end cap (5) clearance fit；There are three axis for processing in piston head left end cap (5)
To equally distributed waist typed through hole, as magnetorheological fluid channel.
Utility model works principle is as follows：
When being passed through a certain size electric current to magnet exciting coil (15), live as a result of the floating with helical spring
Plug, when piston head moves back and forth, floating piston operating position can remain unchanged, therefore the working region of piston head will not become
Change, ensure that damper can export the damping force of continuous-stable so that the performance of MR damper is more stable.
Claims (1)
1. a kind of MR damper with helical spring floating piston arrangement, it is characterised in that including：Left lifting lug (1) is lived
Stopper rod (2), damper left end cap (3), damper cylinder body (4), piston head left end cap (5), piston head sleeve (6), piston head are right
End cap (7), floating piston (8), damper right end cap (9), right lifting lug (10), spring right part holder (11), helical spring (12),
Spring left part holder (13), fastening nut (14) and magnet exciting coil (15)；It is machined with internal thread hole among left lifting lug (1) right end；
Piston rod (2) is processed into a ladder, and left end external peripheral surface is machined with external screw thread；Left lifting lug (1) right end and piston rod (2) are left
End is threadably secured connection；Damper left end cap (3) is fixedly connected with damper cylinder body (4) by screw, and passes through sealing
Circle is sealed；Circular through hole is machined among damper left end cap (3), piston rod (2) is round logical with damper left end cap (3)
Internal surface of hole clearance fit, and be sealed by a seal ring；Piston head left end cap (5) is machined with central through hole, and center is logical
Internal surface of hole and piston rod (2) right end outer surface clearance fit；Piston head left end cap (5) passes on left platform on the right side of piston rod (2)
Shoulder carries out axially position；It is interference fitted on the left of piston head right end cap (7) on the right side of piston head left end cap (5)；Piston head sleeve (6)
Left side and right side are machined with boss respectively, and left side boss is interference fitted with piston head left end cap (5) right-hand end,
Right side boss is interference fitted with piston head right end cap (7) left end；Piston head left end cap (5), piston head right end cap (7),
Piston head sleeve (6) is fixedly connected with piston rod (2) by fastening nut (14)；Floating piston (8) circumferential outer surface and damping
Device cylinder body (4) circumferential inner surface clearance fit, and be sealed by a seal ring；Floating piston (8) right side is machined with cylinder
Shape protrusion, spring left part holder (13) are mounted on cylindrical projection point；Helical spring (12) one end is inserted in a spring left side
Portion's holder (13), the other end are inserted into spring right part holder (11)；Damper right end cap (9) left end is machined with cylindrical projection
Point, spring right part holder (11) is mounted on cylindrical projection point；In piston head left end cap (5) and piston head right end cap (7)
Between form toroidal cavity, magnet exciting coil (15) uniform winding is in toroidal cavity；Piston head left end cap (5), piston rod (2)
And left lifting lug (1) is machined with fairlead, the lead of magnet exciting coil (15) passes sequentially through above-mentioned fairlead and draws；Damper is right
End cap (9) is fixedly connected with damper cylinder body (4) by screw, and is sealed by a seal ring；In right lifting lug (10) left end
Between be machined with internal thread hole；It is machined with external screw thread on the right side of damper right end cap (9), the two is connected by screw threads for fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820437301.4U CN207989636U (en) | 2018-03-29 | 2018-03-29 | A kind of MR damper with helical spring floating piston arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820437301.4U CN207989636U (en) | 2018-03-29 | 2018-03-29 | A kind of MR damper with helical spring floating piston arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989636U true CN207989636U (en) | 2018-10-19 |
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ID=63830341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820437301.4U Expired - Fee Related CN207989636U (en) | 2018-03-29 | 2018-03-29 | A kind of MR damper with helical spring floating piston arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989636U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340298A (en) * | 2018-11-16 | 2019-02-15 | 重庆大学 | Cubage compensation structure built in damper piston |
| CN110017344A (en) * | 2019-03-01 | 2019-07-16 | 南京航空航天大学 | A kind of damper |
| CN113074210A (en) * | 2021-03-16 | 2021-07-06 | 广西科技大学 | Passive magnetorheological vibration damper |
| CN114017467A (en) * | 2021-11-18 | 2022-02-08 | 中国科学技术大学 | Magneto-rheological damper with negative rigidity characteristic |
-
2018
- 2018-03-29 CN CN201820437301.4U patent/CN207989636U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340298A (en) * | 2018-11-16 | 2019-02-15 | 重庆大学 | Cubage compensation structure built in damper piston |
| CN109340298B (en) * | 2018-11-16 | 2019-12-10 | 重庆大学 | Piston built-in volume compensation structure for damper |
| CN110017344A (en) * | 2019-03-01 | 2019-07-16 | 南京航空航天大学 | A kind of damper |
| CN113074210A (en) * | 2021-03-16 | 2021-07-06 | 广西科技大学 | Passive magnetorheological vibration damper |
| CN114017467A (en) * | 2021-11-18 | 2022-02-08 | 中国科学技术大学 | Magneto-rheological damper with negative rigidity characteristic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 |