CN114321257A - Shock absorber coupled with spring magnetorheological elastomer - Google Patents
Shock absorber coupled with spring magnetorheological elastomer Download PDFInfo
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- CN114321257A CN114321257A CN202111668483.9A CN202111668483A CN114321257A CN 114321257 A CN114321257 A CN 114321257A CN 202111668483 A CN202111668483 A CN 202111668483A CN 114321257 A CN114321257 A CN 114321257A
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- spring
- magnetorheological elastomer
- coil
- damper
- shell
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 73
- 239000000806 elastomer Substances 0.000 title claims abstract description 70
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 33
- 230000035939 shock Effects 0.000 title claims abstract description 33
- 230000005291 magnetic effect Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention relates to a spring magnetorheological elastomer coupled shock absorber which comprises a shell, a connecting piece (2), a coil (3), a coil sleeve (4), a magnetorheological elastomer (5), a spring (7) and a controllable power supply module (9), wherein the coil sleeve (4) and the magnetorheological elastomer (5) are positioned in the shell, the coil (3) is wound on the outer side wall of the coil sleeve (4), the magnetorheological elastomer (5) is of a cylindrical structure and is coaxially arranged in the coil sleeve (4), the spring (7) is coaxially arranged in the magnetorheological elastomer (5), one end of the connecting piece (2) is positioned in the shell and is in contact with the magnetorheological elastomer (5), the other end of the connecting piece is positioned outside the shell, and the coil (3) is electrically connected with the controllable power supply module (9). Compared with the prior art, the invention has the advantages of large initial rigidity value, adjustable damping force of the shock absorber, wide application range and long service life.
Description
Technical Field
The invention relates to the technical field of shock absorbers, in particular to a shock absorber coupled by a spring magnetorheological elastomer.
Background
The shock absorber has extensive application in each field, and current bumper shock absorber kind has hydraulic pressure bumper shock absorber, atmospheric pressure bumper shock absorber, damping adjustable shock absorber, spring damper and rubber material bumper shock absorber etc. and wherein the rubber material bumper shock absorber uses the most extensively, but the compression volume is less, receives the influence of temperature easily, and the performance is unstable, and life is short. The damping force of the shock absorber is fixed, so that the shock absorber cannot change the damping force according to needs, and the adaptability is poor.
In addition, a magnetorheological elastomer shock absorber is currently researched to realize the damping force adjustability of the shock absorber, but because the magnetorheological elastomer is formed by doping micrometer-sized ferromagnetic particles into a high-molecular polymer, the combination of carbonyl iron powder and rubber is mostly used. But the initial rigidity is less, and the load that can bear is less, and life is few, receives external environment temperature influence great.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the damper coupled by the spring magnetorheological elastomer, which has the advantages of large initial rigidity value, adjustable damping force of the damper, wide application range and long service life.
The purpose of the invention can be realized by the following technical scheme:
a shock absorber coupled with a spring magnetorheological elastomer comprises a shell, a connecting piece, a coil sleeve, the magnetorheological elastomer, a spring and a controllable power supply module, wherein the coil sleeve and the magnetorheological elastomer are located in the shell, the coil is wound on the outer side wall of the coil sleeve, the magnetorheological elastomer is of a cylindrical structure and is coaxially arranged in the coil sleeve, the spring is coaxially arranged in the magnetorheological elastomer, one end of the connecting piece is located in the shell and is in contact with the magnetorheological elastomer, the other end of the connecting piece is located outside the shell, and the coil is electrically connected with the controllable power supply module.
Furthermore, the shock absorber still include two locating parts, one of them locating part is located the upper end of spring, another locating part is located the lower extreme of spring.
Furthermore, the limiting part comprises a limiting disc and a limiting rod coaxially and vertically fixed on the limiting disc, the limiting rod is inserted into a spring, the spring is in contact with the limiting disc, and the diameter of the limiting disc is matched with the inner diameter of the magnetorheological elastomer.
Further, the casing include shell and base, the shell be one end open-ended cylinder structure, base and shell opening match, and fixed with the shell through the bolt.
Furthermore, the base is provided with a limiting bulge, and the limiting bulge is inserted into the coil sleeve.
Further, the base on be equipped with mounting groove and the wire casing that is used for installing temperature sensor, mounting groove and wire casing intercommunication.
Furthermore, the connecting piece comprises a circular connecting disc and a connecting rod coaxially and vertically arranged on the connecting disc, the connecting disc is in contact with the magnetorheological elastomer, and the connecting rod penetrates through the side wall of the shell.
Further, the diameter of the connecting disc is matched with the inner diameter of the coil sleeve, and the connecting disc is located in the coil sleeve.
Furthermore, the shell is provided with a wire hole for leading out a wire of the coil.
Further, the controllable power supply module is a 12V or 24V adjustable direct current stabilized power supply.
Compared with the prior art, the invention has the following beneficial effects:
(1) when the coil is not electrified, the damper is a passive damper, and due to the existence of the spring, the initial rigidity value of the damper is larger, so that the damper can be used for simple damping work in certain working scenes which cannot be electrified, when the coil is electrified, the damping force of the damper can be controlled only by adjusting the current, and the magnetic field generated by the electromagnet is correspondingly changed by changing the output current value of the controllable power supply module, so that the rigidity and the strength of the magnetorheological elastomer are adjusted, the effect of adjusting the damping force of the damper is achieved, the application range is wide, and the dynamic automatic adjustment of the damping force for real-time working condition environment can be realized by combining with a computer;
(2) the loss of the magnetorheological elastomer can be reduced due to the existence of the spring, and the service life of the shock absorber is prolonged;
(3) the limiting part comprises a limiting disc and a limiting rod coaxially and vertically fixed on the limiting disc, the limiting rod is inserted into a spring, the spring is in contact with the limiting disc, the diameter of the limiting disc is matched with the inner diameter of the magnetorheological elastomer, the limiting part can prevent the magnetorheological elastomer from being damaged by overload and prevent a connecting piece from colliding with a coil sleeve, and meanwhile, the limiting disc plays a role in sealing, so that sundries are prevented from entering the magnetorheological elastomer, and the safety is high;
(4) the base is provided with the mounting groove and the wire groove which are used for mounting the temperature sensor, the mounting groove is communicated with the wire groove, the temperature sensor is convenient to mount and does not influence the appearance of the shock absorber, and the temperature sensor monitors the internal temperature environment of the shock absorber in real time, so that the rigidity and the strength of the elastomer magnetorheological elastomer can be controlled more accurately and stably from the outside.
Drawings
FIG. 1 is a cross-sectional view of a shock absorber;
FIG. 2 is a schematic diagram of a controllable power module;
FIG. 3 is a schematic view of an exploded structure of the shock absorber;
FIG. 4 is a schematic structural diagram of a limiting member;
FIG. 5 is a schematic structural view of a connector;
FIG. 6 is a cross-sectional view of the base;
the reference numbers in the figures illustrate:
1. the magnetic control type magnetic control switch comprises a shell, 2, a connecting piece, 3, a coil, 4, a coil sleeve, 5, a magnetorheological elastomer, 6, a limiting piece, 7, a spring, 8, a base, 9, a controllable power supply module, 10-line holes, 21-connecting discs, 22-connecting rods, 61, a limiting rod, 62, a limiting disc, 81, a limiting bulge, 82-mounting grooves and 83-line grooves.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
A shock absorber coupled with a spring magnetorheological elastomer comprises a shell, a connecting piece 2, a coil 3, a coil sleeve 4, a magnetorheological elastomer 5, a spring 7 and a controllable power supply module 9, wherein the coil sleeve 4 and the magnetorheological elastomer 5 are positioned in the shell, the coil 3 is wound on the outer side wall of the coil sleeve 4 to form an electromagnet, the magnetorheological elastomer 5 is of a cylindrical structure and is coaxially arranged in the coil sleeve 4, the spring 7 is coaxially arranged in the magnetorheological elastomer 5, one end of the connecting piece 2 is positioned in the shell and is in contact with the magnetorheological elastomer 5, the other end of the connecting piece is positioned outside the shell and is connected with a load, and the coil 3 is electrically connected with the controllable power supply module 9.
The magnetorheological elastomer 5 and the spring 7 are arranged in the coil sleeve 4, so that the magnetic field intensity and the magnetic field uniformity are ensured, the magnetorheological elastomer and the coil 3 are not interfered with each other, and the replacement of internal parts is facilitated.
The shock absorber further comprises two limiting parts 6, wherein one limiting part 6 is located at the upper end of the spring 7, and the other limiting part 6 is located at the lower end of the spring 7 and plays a role in limiting the spring 7.
As shown in fig. 4, the limiting member 6 includes a limiting disc 62 and a limiting rod 61 coaxially and vertically fixed on the limiting disc 62, the limiting rod 61 is inserted into the spring 7, the spring 7 contacts with the limiting disc 62, the diameter of the limiting disc 62 is matched with the inner diameter of the magnetorheological elastomer 5, the limiting member 6 can prevent the magnetorheological elastomer 5 from being damaged by overload and the connecting member 2 from colliding with the coil sleeve 4, and meanwhile, the limiting disc 62 plays a role in sealing, so that sundries are prevented from entering the magnetorheological elastomer, and the safety is high.
The casing includes shell 1 and base 8, and shell 1 is one end open-ended drum structure, and base 8 matches with 1 opening of shell, and is fixed with shell 1 through the bolt.
The electromagnet and the magnetorheological elastomer 5 are both positioned in the shell 1, and the shell 1 is utilized to protect the magnetorheological elastomer 5 from external pollution.
Be equipped with spacing arch 81 on the base 8, spacing arch 81 inserts in coil sleeve 4, plays the positioning action.
The rigidity and strength of the magnetorheological elastomer 5 are greatly influenced by the temperature of the external environment, and in order to ensure the control effect of the magnetorheological elastomer 5, as shown in fig. 6, the base 8 is provided with the mounting groove 82 and the wire groove 83 for mounting the temperature sensor, the mounting groove 82 is communicated with the wire groove 83, the temperature sensor is convenient to mount, the appearance of the shock absorber is not influenced, and the temperature sensor monitors the temperature environment inside the shock absorber in real time, so that the rigidity and strength of the magnetorheological elastomer 5 can be controlled more accurately and stably from the outside.
As shown in fig. 5, the connection member 2 includes a circular connection plate 21 and a connection rod 22 coaxially and vertically disposed on the connection plate 21, the connection plate 21 is in contact with the magnetorheological elastomer 5, and the connection rod 22 passes through a side wall of the housing and is connected to the load.
The diameter of the connection disc 21 matches the inner diameter of the coil sleeve 4, the connection disc 21 being located inside the coil sleeve 4.
The housing is provided with a wire hole 10 for leading out a wire of the coil 3.
The structure of the controllable power supply module 9 is shown in fig. 2, and the controllable power supply module 9 is a 12V or 24V adjustable dc voltage-stabilized power supply.
The working principle of the shock absorber is as follows:
the connecting rod 22 is connected with an external load, the connecting disc 21 is restrained by the inner wall of the coil sleeve 4, the connecting rod 22 vertically moves to act on the magnetorheological elastomer 5 and the spring 7, and the damping effect is achieved through the coupling effect of the magnetorheological elastomer 5 and the spring 7;
when the coil 3 is not electrified, the damper is a passive damper, and due to the existence of the spring 7, the initial stiffness value of the damper is larger, so that the damper can be used for simple damping work in certain working scenes where the coil cannot be electrified.
When the coil 3 is electrified, the damping force of the shock absorber can be controlled only by adjusting the current, the magnetic field generated by the electromagnet is correspondingly changed by changing the output current value of the controllable power supply module 9, so that the rigidity and the strength of the magnetorheological elastomer 5 are adjusted, the effect of adjusting the damping force of the shock absorber is achieved, application scenes are greatly increased, and the dynamic automatic adjustment of the damping force corresponding to a real-time working condition environment can be realized by combining with a computer.
The parts adopted by the shock absorber are mass production standard parts except the magnetorheological elastomer 5, the base 8, the connecting piece 2 and the shell 1, so that the cost and the assembly difficulty can be greatly reduced.
Example 2
In this embodiment, the damper further includes two limiting members 6, one of the limiting members 6 is located at the upper end of the spring 7, and the other limiting member 6 is located at the lower end of the spring 7, so as to limit the spring 7.
The limiting part 6 comprises a limiting disc 62 and a limiting rod 61 coaxially and vertically fixed on the limiting disc 62, the limiting rod 61 is inserted into the spring 7, the spring 7 is in contact with the limiting disc 62, the diameter of the limiting disc 62 is matched with the inner diameter of the magnetorheological elastomer 5, the limiting part 6 can prevent the magnetorheological elastomer 5 from being damaged by overload and the connecting piece 2 from colliding with the coil sleeve 4, meanwhile, the limiting disc 62 plays a role in sealing, sundries are prevented from entering the magnetorheological elastomer, and safety is high.
The rest is the same as in example 1.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a shock absorber of spring magnetic current becomes elastomer coupling, characterized in that, including casing, connecting piece (2), coil (3), coil sleeve (4), magnetic current becomes elastomer (5), spring (7) and controllable power module (9), coil sleeve (4) and magnetic current becomes elastomer (5) and are located the casing, coil (3) twine on the lateral wall of coil sleeve (4), magnetic current becomes elastomer (5) be the drum structure, and coaxial locating in coil sleeve (4), spring (7) coaxial locating in magnetic current becomes elastomer (5), connecting piece (2) one end be located the casing, and with magnetic current becomes elastomer (5) contact, the other end is located outside the casing, coil (3) and controllable power module (9) electric connection.
2. The damper with coupled spring magnetorheological elastomer according to claim 1, further comprising two limit pieces (6), wherein one limit piece (6) is located at the upper end of the spring (7), and the other limit piece (6) is located at the lower end of the spring (7).
3. The damper with the coupled spring magnetorheological elastomer according to claim 2, wherein the limiting member (6) comprises a limiting disc (62) and a limiting rod (61) coaxially and vertically fixed on the limiting disc (62), the limiting rod (61) is inserted into the spring (7), the spring (7) is in contact with the limiting disc (62), and the diameter of the limiting disc (62) is matched with the inner diameter of the magnetorheological elastomer.
4. The damper with coupled spring magnetorheological elastomer according to claim 1, wherein the housing comprises a shell (1) and a base (8), the shell (1) is of a cylindrical structure with an opening at one end, and the base (8) is matched with the opening of the shell (1) and fixed with the shell (1) through bolts.
5. The damper with coupled spring magnetorheological elastomer according to claim 4, wherein the base (8) is provided with a limit protrusion (81), and the limit protrusion (81) is inserted into the coil sleeve (4).
6. The damper coupled with the spring magnetorheological elastomer according to claim 4, wherein the base (8) is provided with a mounting groove (82) and a wire groove (83) for mounting a temperature sensor, and the mounting groove (82) is communicated with the wire groove (83).
7. The damper with coupled spring magnetorheological elastomer according to claim 1, wherein the connecting piece (2) comprises a circular connecting disc (21) and a connecting rod (22) coaxially and vertically arranged on the connecting disc (21), the connecting disc (21) is in contact with the magnetorheological elastomer (5), and the connecting rod (22) penetrates through the side wall of the shell.
8. A spring magnetorheological elastomer coupled damper according to claim 7, wherein the diameter of the connection disc (21) matches the inner diameter of the coil sleeve (4), the connection disc (21) being located inside the coil sleeve (4).
9. A damper with coupled spring magnetorheological elastomer according to claim 1, wherein the housing is provided with a wire hole (10) for leading out a wire of the coil (3).
10. The damper with coupled spring magnetorheological elastomer according to claim 1, wherein the controllable power module (9) is a 12V or 24V adjustable regulated DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111668483.9A CN114321257A (en) | 2021-12-31 | 2021-12-31 | Shock absorber coupled with spring magnetorheological elastomer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111668483.9A CN114321257A (en) | 2021-12-31 | 2021-12-31 | Shock absorber coupled with spring magnetorheological elastomer |
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| CN114321257A true CN114321257A (en) | 2022-04-12 |
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| CN202111668483.9A Pending CN114321257A (en) | 2021-12-31 | 2021-12-31 | Shock absorber coupled with spring magnetorheological elastomer |
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Application publication date: 20220412 |