CN201953897U - External electromagnetic telescopic magnetorheological damper - Google Patents
External electromagnetic telescopic magnetorheological damper Download PDFInfo
- Publication number
- CN201953897U CN201953897U CN2011200620307U CN201120062030U CN201953897U CN 201953897 U CN201953897 U CN 201953897U CN 2011200620307 U CN2011200620307 U CN 2011200620307U CN 201120062030 U CN201120062030 U CN 201120062030U CN 201953897 U CN201953897 U CN 201953897U
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- box type
- type piston
- piston
- slave cylinder
- clutch release
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Abstract
The utility model discloses an external electromagnetic telescopic magnetorheological damper, which comprises a working cylinder, a compensating airbag, a piston, a piston rod, a hollow piston and an electromagnet, wherein equal-diameter through holes bigger than the outer diameter of the piston are formed at both the axle centers of the hollow piston and the hollow piston rod respectively; one end of the piston rod is fixed in the piston and then arranged in the equal-diameter through holes at the axle centers of the hollow piston and the hollow piston rod; the hollow piston and the hollow piston rod are arranged in the working cylinder; the compensating airbag is arranged at the bottom of the working cylinder; the electromagnet is mounted on the circumference of the working cylinder; the working cylinder and the equal-diameter through holes of the hollow piston and the hollow piston rod are filled with a magnetorheological fluid; and the piston is wound by an excitation coil. As long as the current output from the power source to the piston excitation coil and the electromagnet is controlled and adjusted, the damping force of the external electromagnetic telescopic magnetorheological damper can be adjusted.
Description
Technical field
The utility model belongs to a kind of MR damper, is specifically related to the telescopic MR damper of a kind of external electromagnet.
Background technique
Because the working stroke of common single outstretch pole magnetorheological damper is less than the length of its clutch release slave cylinder, thereby be difficult to be applicable to working space limited length system or working stroke occasion greater than clutch release slave cylinder, and the working stroke of the telescopic MR damper of external electromagnet of the present utility model can be greater than the length of its clutch release slave cylinder, therefore, the telescopic MR damper of external electromagnet can provide bigger working stroke under the identical situation of clutch release slave cylinder length, and the telescopic The Applications of Magnetorheological Dampers scope of external electromagnet is expanded.
Summary of the invention
The utility model is at the less deficiency of common single outstretch pole magnetorheological damper working stroke, a kind of novel MR damper has been proposed, that is: the telescopic MR damper of a kind of external electromagnet, the telescopic MR damper of external electromagnet can provide bigger working stroke under the identical situation of clutch release slave cylinder length, thereby Applicable scope is more extensive.
The technical solution of the utility model is as follows:
The telescopic MR damper of a kind of external electromagnet, it comprises clutch release slave cylinder, compensation air bag, piston, piston rod, box type piston, box type piston bar, electromagnet; Clutch release slave cylinder is made of non-magnet_conductible material, and the isometrical through hole greater than piston external diameter is all arranged on the box type piston that is made of permeability magnetic material and the axle center of box type piston bar, and an end of box type piston and an end of box type piston bar are fixed; One end of piston rod fixedly is placed in the isometrical through hole in box type piston and box type piston bar axle center with the piston that is made of permeability magnetic material, seal arrangement and the bearing of the other end of piston rod by the box type piston rod end surface stretches out from the other end of box type piston bar, on piston, be wound with field coil, box type piston and box type piston bar place in the clutch release slave cylinder, seal arrangement and the bearing of box type piston bar by the clutch release slave cylinder end face stretches out from an end of clutch release slave cylinder, the compensation air bag is positioned at the clutch release slave cylinder bottom, electromagnet is installed on the excircle of clutch release slave cylinder, in the isometrical through hole of clutch release slave cylinder and box type piston and box type piston bar, all be full of magnetic flow liquid, the external diameter of piston is less than the internal diameter of the isometrical through hole on box type piston and the box type piston bar axle center and leave the magnetic flow liquid gap of flowing, and the external diameter of box type piston is less than the internal diameter of clutch release slave cylinder and leave the magnetic flow liquid gap of flowing.At piston rod and box type piston bar end a location ring washer is arranged respectively, the external diameter of the location ring washer of piston-rod end is greater than the seal arrangement of box type piston rod end surface and the external diameter of bearing, and the external diameter of the location ring washer of box type piston bar end is greater than the seal arrangement of clutch release slave cylinder end face and the external diameter of bearing.The telescopic MR damper of external electromagnet has two working strokes, first working stroke is: piston rod promotes piston and enters in the isometrical through hole of (or withdrawing from) box type piston and box type piston bar, and second working stroke is: piston rod promotes box type piston and the box type piston bar enters in (or withdrawing from) clutch release slave cylinder; In these two working strokes, because of in the isometrical through hole of piston rod turnover box type piston and box type piston bar and the volume-variation in the clutch release slave cylinder that causes in the box type piston bar turnover clutch release slave cylinder compensate by the compensation air bag.
Function of the present utility model is achieved in that when piston rod promotes in the isometrical through hole that piston enters box type piston and box type piston bar, that is: in first working stroke, a part of magnetic flow liquid in the isometrical through hole of box type piston and box type piston bar is by the Clearance Flow between piston external diameter and box type piston and the isometrical through hole internal diameter of box type piston bar, another part magnetic flow liquid in the isometrical through hole of box type piston and box type piston bar then is subjected to flowing to clutch release slave cylinder because of the extruding that entering of piston rod reduces box type piston and box type piston bar internal volume, because the isometrical through hole of box type piston and box type piston bar communicates with clutch release slave cylinder, therefore, the compensation air bag that is positioned at the clutch release slave cylinder bottom will be compressed, with the volume-variation in the isometrical through hole of compensation box type piston and box type piston bar; In piston rod continue to promote isometrical through hole that piston enters box type piston and box type piston bar and after arriving the location ring washer of piston-rod end, box type piston and box type piston bar begin to enter clutch release slave cylinder under the promotion of location ring washer on the piston rod, that is: in second working stroke, a part of magnetic flow liquid in the clutch release slave cylinder is by the Clearance Flow between box type piston external diameter and the clutch release slave cylinder internal diameter, another part magnetic flow liquid in the clutch release slave cylinder then is subjected to the extruding that the clutch release slave cylinder internal volume reduced because of entering of box type piston bar, continues compression compensation air bag and enters volume-variation in the clutch release slave cylinder with compensation box type piston bar.
When piston field coil and electromagnet no electric circuit, there is not magnetic field in the clutch release slave cylinder and in the gap between piston external diameter and box type piston and the isometrical through hole internal diameter of box type piston bar, thereby in the clutch release slave cylinder and the viscosity of magnetic flow liquid in the gap between box type piston and the isometrical through hole internal diameter of box type piston bar lower, piston rod promotes in the isometrical through hole that piston enters box type piston and box type piston bar and piston rod promotion box type piston and box type piston bar to enter the damping force that is subjected in the clutch release slave cylinder less; After piston field coil and electromagnet energising, make in the clutch release slave cylinder and piston external diameter and box type piston and the isometrical through hole internal diameter of box type piston bar between the gap in magnetic intensity higher, make the viscosity of the magnetic flow liquid in the gap between the isometrical through hole internal diameter of clutch release slave cylinder and box type piston and box type piston bar higher, make piston rod promote in the isometrical through hole that piston enters box type piston and box type piston bar and piston rod promotes box type piston and box type piston bar to enter the damping force that is subjected in the clutch release slave cylinder bigger, by adjusting the size of current in input piston field coil and the electromagnet, make the damping force of the telescopic MR damper output of external electromagnet obtain adjusting.Therefore, compare,, and make the Applicable scope of MR damper more extensive because of the telescopic MR damper of external electromagnet can provide bigger working stroke under the identical situation of clutch release slave cylinder length with common single outstretch pole magnetorheological damper.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model, and dotted line is the direction in the magnetic field of electromagnet generation among the figure.
Fig. 2 is the cut-away view of Fig. 1.
Fig. 3 is a work schematic representation of the present utility model, also is the schematic representation of first working stroke of the utility model.
Fig. 4 is the schematic representation of second working stroke of the utility model.
Embodiment
Describe structure of the present utility model in detail below in conjunction with accompanying drawing:
Referring to Fig. 1 and Fig. 2, this is a kind of concrete structure of the present utility model, and it comprises the clutch release slave cylinder 3 that is made of non-magnet_conductible material, compensation air bag 1, constitutes piston 13 and piston rod 14, box type piston 8 and box type piston bar 15 by permeability magnetic material; Isometrical through hole 7 greater than piston 13 external diameters is all arranged on the axle center of box type piston 8 and box type piston bar 15, and an end of box type piston 8 and an end of box type piston bar 15 are fixed; One end of piston rod 14 and piston 13 fixedly are placed in the isometrical through hole 7 in box type piston 8 and box type piston bar 15 axle center, seal arrangement 19 and the bearing 20 of the other end of piston rod 14 by box type piston bar 15 end faces stretches out from the other end of box type piston bar 15, box type piston 8 and box type piston bar 15 are placed in the clutch release slave cylinder 3, seal arrangement 9 and the bearing 10 of box type piston bar 15 by clutch release slave cylinder 3 end faces stretches out from an end of clutch release slave cylinder 3, compensation air bag 1 is positioned at clutch release slave cylinder 3 bottoms, electromagnet 6 is installed on the excircle of clutch release slave cylinder 3, in compensation air bag 1, injected pressurized air 2, in the isometrical through hole 7 of box type piston 8 and box type piston bar 15 and clutch release slave cylinder 3, all be full of magnetic flow liquid 4, the external diameter of piston 13 is less than the internal diameter of the isometrical through hole 7 on box type piston 8 and box type piston bar 15 axle center and leave the magnetic flow liquid gap 12 of flowing, on piston 13, be wound with field coil 11, the lighting outlet 22 of field coil 11 is drawn by piston rod 14 center holes 16, and the external diameter of box type piston 8 is less than the internal diameter of clutch release slave cylinder 3 and leave the magnetic flow liquid gap 5 of flowing.
Piston rod 14 and box type piston bar 15 ends respectively have a location ring washer 21 and location ring washer 17, the external diameter of the location ring washer 21 of piston rod 14 ends is greater than the seal arrangement 19 of box type piston bar 15 end faces and the external diameter of bearing 20, and the external diameter of the location ring washer 17 of box type piston bar 15 ends is greater than the seal arrangement 9 of clutch release slave cylinder 3 end faces and the external diameter of bearing 10.
Referring to Fig. 3, when piston rod 14 promotes in the isometrical through hole 7 that pistons 13 enter box type piston 8 and box type piston bar 15, the telescopic MR damper of external electromagnet begins to enter first working stroke, make a part of magnetic flow liquid 4 in the isometrical through hole 7 of box type piston 8 and box type piston bar 15, flow by the gap between isometrical through hole 7 internal diameters of piston 13 external diameters and box type piston 8 and box type piston bar 15 12, another part magnetic flow liquid 4 in the isometrical through hole 7 of box type piston 8 and box type piston bar 15, then be subjected to entering because of piston rod 14, make the extruding that isometrical through hole 7 internal volumes of box type piston 8 and box type piston bar 15 reduce and flow in the clutch release slave cylinder 3, because the isometrical through hole 7 of box type piston 8 and box type piston bar 15 communicates with clutch release slave cylinder 3, therefore, the compensation air bag 1 that is positioned at clutch release slave cylinder 3 bottoms will be compressed, with the volume-variation in the isometrical through hole 7 of compensation box type piston 8 and box type piston bar 15; When continuing to promote piston 13, piston rod 14 enters in the isometrical through hole 7 of box type piston 8 and box type piston bar 15, behind the location ring washer 21 resistance shelves that are subjected to stopper rod 14 ends, the telescopic MR damper of external electromagnet begins to enter second working stroke, referring to Fig. 4, box type piston 8 and box type piston bar 15 begin to enter clutch release slave cylinder 3 under the promotion of location ring washer 21 on the piston rod 14, a part of magnetic flow liquid 4 in the clutch release slave cylinder 3 flows by the gap between box type piston 8 external diameters and clutch release slave cylinder 3 internal diameters 5,4 of another part magnetic flow liquids in the clutch release slave cylinder 3 are subjected to the extruding that clutch release slave cylinder 3 internal volumes reduced because of entering of box type piston bar 15, continue the volume-variation that compression compensation air bag 1 enters in the clutch release slave cylinder 3 with compensation box type piston bar 15.
When control power supply 24 not during output current, when the field coil 11 of piston 13 and electromagnet 6 no electric circuits, there is not magnetic field in the gap 12 between box type piston 8 external diameters and clutch release slave cylinder 3 internal diameters between gap 5 and piston 13 external diameters and box type piston 8 and box type piston bar 15 isometrical through hole 7 internal diameters, thereby the viscosity of the magnetic flow liquid 4 in gap 5 and the gap 12 is lower, and piston rod 14 promotes in the isometrical through hole 7 that pistons 13 enter box type piston 8 and box type piston bar 15 and piston rod 14 promotes box type pistons 8 and box type piston bar 15 to enter the damping force that is subjected in the clutch release slave cylinder 3 less; When control power supply 24 output currents, after the field coil 11 of piston 13 is switched on electromagnet 6, make the magnetic intensity in the gap 12 between gap 5 between box type piston 8 external diameters and clutch release slave cylinder 3 internal diameters and piston 13 external diameters and box type piston 8 and box type piston bar 15 isometrical through hole 7 internal diameters higher, make the viscosity of magnetic flow liquid 4 in gap 5 and the gap 12 higher, make piston rod 14 promote in the isometrical through hole 7 that pistons 13 enter box type piston 8 and box type piston bar 15 and piston rod 14 promotes box type pistons 8 and box type piston bar 15 to enter the damping force that is subjected in the clutch release slave cylinder 3 bigger, thereby make the damping force of the telescopic MR damper output of external electromagnet obtain changing.Therefore, output to the field coil 11 of piston 13 and the size of current in the electromagnet 6, can adjust the size of the damping force of the telescopic MR damper output of external electromagnet as long as adjust control power supply 24.
In piston rod 14 pulling pistons 13 withdraw from the isometrical through hole 7 of box type piston 8 and box type piston bar 15 and the situation of piston rod 14 when spurring box type pistons 8 and box type piston bar 15 and deactivating in the cylinder 3 then in contrast, repeat no more herein.
Claims (3)
1. telescopic MR damper of external electromagnet, it comprises clutch release slave cylinder, the compensation air bag, piston, piston rod, box type piston, box type piston bar and electromagnet, it is characterized in that: clutch release slave cylinder is made of non-magnet_conductible material, isometrical through hole greater than piston external diameter is all arranged on the box type piston that constitutes by permeability magnetic material and the axle center of box type piston bar, one end of box type piston and an end of box type piston bar are fixed, one end of piston rod fixedly is placed in the isometrical through hole in box type piston and box type piston bar axle center with the piston that is made of permeability magnetic material, seal arrangement and the bearing of the other end of piston rod by the box type piston rod end surface stretches out from the other end of box type piston bar, on piston, be wound with field coil, box type piston and box type piston bar place in the clutch release slave cylinder, seal arrangement and the bearing of box type piston bar by the clutch release slave cylinder end face stretches out from an end of clutch release slave cylinder, the compensation air bag is positioned at the clutch release slave cylinder bottom, electromagnet is installed on the excircle of clutch release slave cylinder, all has been full of magnetic flow liquid in the isometrical through hole of clutch release slave cylinder and box type piston and box type piston bar.
2. the telescopic MR damper of a kind of external electromagnet as claimed in claim 1, it is characterized in that: the external diameter of described piston is less than the internal diameter of the isometrical through hole on box type piston and the box type piston bar axle center and leave the magnetic flow liquid gap of flowing, and the external diameter of box type piston is less than the internal diameter of clutch release slave cylinder and leave the magnetic flow liquid gap of flowing.
3. the telescopic MR damper of a kind of external electromagnet as claimed in claim 1, it is characterized in that: described piston rod and box type piston bar end respectively have a location ring washer, the external diameter of the location ring washer of piston-rod end is greater than the seal arrangement of box type piston rod end surface and the external diameter of bearing, and the external diameter of the location ring washer of box type piston bar end is greater than the seal arrangement of clutch release slave cylinder end face and the external diameter of bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200620307U CN201953897U (en) | 2011-03-11 | 2011-03-11 | External electromagnetic telescopic magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200620307U CN201953897U (en) | 2011-03-11 | 2011-03-11 | External electromagnetic telescopic magnetorheological damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201953897U true CN201953897U (en) | 2011-08-31 |
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ID=44498007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200620307U Expired - Lifetime CN201953897U (en) | 2011-03-11 | 2011-03-11 | External electromagnetic telescopic magnetorheological damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201953897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141108A (en) * | 2011-03-11 | 2011-08-03 | 王靖 | External electromagnet retractable type magnetorheological damper |
-
2011
- 2011-03-11 CN CN2011200620307U patent/CN201953897U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141108A (en) * | 2011-03-11 | 2011-08-03 | 王靖 | External electromagnet retractable type magnetorheological damper |
| CN102141108B (en) * | 2011-03-11 | 2012-09-05 | 王靖 | External electromagnet retractable type magnetorheological damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110831 Effective date of abandoning: 20120905 |