CN110682880B - Automobile collision buffer device based on magnetorheological technology and energy absorption buffering method - Google Patents
Automobile collision buffer device based on magnetorheological technology and energy absorption buffering method Download PDFInfo
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- CN110682880B CN110682880B CN201911027926.9A CN201911027926A CN110682880B CN 110682880 B CN110682880 B CN 110682880B CN 201911027926 A CN201911027926 A CN 201911027926A CN 110682880 B CN110682880 B CN 110682880B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/04—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement
- B60R19/16—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects formed from more than one section in a side-by-side arrangement having deflecting members, e.g. rollers, balls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/20—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
Abstract
The invention discloses an automobile collision buffer device based on a magnetorheological technology, which comprises a buffer shell and a driving system, wherein the left side of the buffer shell is movably connected with an automobile bumper, the inner wall of the buffer shell is fixedly connected with a clip-shaped wall, and an air-tight groove is formed in the clip-shaped wall. According to the automobile collision buffer device and the buffering energy-absorbing method based on the magneto-rheological technology, the clip frame is driven to move towards the right side through automobile collision, the air-tight plug slides in the air-tight groove and extrudes the buffer spring, part of automobile collision impact energy can be absorbed, and the magnetic coil, the driving power supply and the magneto-rheological fluid column are matched, so that the magneto-rheological fluid column presents high viscosity and low fluidity, most of automobile collision impact energy is absorbed, the buffering energy-absorbing characteristic is good, the shock-absorbing device is not easy to deform during collision, a due safety effect is achieved, the magneto-rheological fluid column does not need to be replaced after collision deformation, and the service life is long.
Description
Technical Field
The invention relates to the technical field of automobile safety protection, in particular to an automobile collision buffer device based on a magnetorheological technology and a buffering energy absorption method.
Background
Automobile safety is divided into two major aspects of active safety and passive safety for vehicles. Active safety is to operate and control the car as freely as possible. The braking and acceleration in a straight line and the left-right hitting direction are all stable as far as possible, so that the vehicle does not deviate from the established travel route and the visual field and the comfort of a driver are not influenced. Such an automobile has a relatively high accident avoidance capability, and the safety of the automobile is ensured under emergency conditions. Passive safety refers to the protection of occupants in a vehicle after an accident, the concept of this protection today and extending to all people and even objects inside and outside the vehicle. Passive safety is quantifiable to some extent, since the international automotive community has already specified very detailed test details for passive safety.
The existing automobile collision buffer device mainly adopts simple non-metallic materials with simple structural form and low cost to buffer, and the part adopts foam packing of cross bars, lining reinforcements and resins to buffer, so that the non-metallic materials have the worst buffering and energy-absorbing characteristics, are very easy to deform during collision, cannot play the role of safety, and the foam packing is disposable and needs to be replaced after being deformed by collision.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an automobile collision buffer device based on a magnetorheological technology and a buffering energy-absorbing method, and solves the problems that the existing automobile collision buffer device is poor in non-metal material buffering energy-absorbing characteristic, is easy to deform during collision and needs to be replaced after foam filler collision deformation.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an automobile collision buffer based on magnetic current becomes technique, includes buffering shell and actuating system, the left side swing joint of buffering shell has car bumper, the inner wall fixedly connected with of buffering shell returns the shape wall, the gas tightness groove has been seted up to the inside of returning the shape wall, and the inside intercommunication of gas tightness groove and buffering shell, the internal surface sliding connection in gas tightness groove has the gas tightness stopper, the left side fixedly connected with of gas tightness stopper returns the shape frame, the left side of returning the shape frame runs through back the shape wall and extends to the outside of returning the shape wall, the left side of returning the shape frame contacts with the right side of car bumper, the right side fixedly connected with buffer spring of gas tightness stopper, and buffer spring's right-hand member and the inner wall fixed connection in gas tightness groove, the inner wall swing joint who returns the shape wall has the magnetic current box, the outer fixed surface of magnetic current box is connected with the piston plate, and the surface sliding connection of piston plate and the back shape wall, cylinder groove and ladder groove have been seted up respectively to the inside left side and the right side of magnetic current box, the equal fixedly connected with slider in ladder groove of ladder groove inner wall, two the upper and lower both sides of ladder groove inner wall all fixedly connected with the magneto current box.
Preferably, the number of the buffer springs is multiple, and the buffer springs are uniformly distributed on the inner wall of the air-tight groove.
Preferably, the upper side and the lower side of the right side in the magnetic flow box are fixedly connected with a driving power supply, and the inner wall of the cylindrical groove is fixedly connected with an electromagnetic coil.
Preferably, the left side fixedly connected with installation pole of buffering shell inner wall, the left end of installation pole runs through the magnetic current box and extends to the inside in ladder groove, the left end of installation pole and the right-hand member swing joint of magnetic current liquid post.
Preferably, the left side of the magnetic current box is fixedly connected with a plurality of elastic pieces.
Preferably, the driving system comprises an acceleration sensor, a central processing unit and a current control module, and an output end of the acceleration sensor is connected with an input end of the central processing unit.
Preferably, the output end of the central processing unit is connected with the input end of the current control module, and the output end of the current control module is connected with the input end of the driving power supply through a wire.
The invention also discloses an automobile collision buffering energy-absorbing method based on the magnetorheological technology, which specifically comprises the following steps:
s1, when an automobile bumper is impacted, the automobile bumper extrudes the clip frame at the moment, and then the clip frame is driven to move towards the right side, so that the air tightness plug is driven to slide towards the right side on the inner surface of the air tightness groove, the buffer spring is compressed, and at the moment, part of energy generated by automobile impact is absorbed by the buffer spring;
s2, when the air tightness plug in the S1 moves towards the right side, gas exhausted from the air tightness groove is introduced into the buffer shell, so that the magnetic flow box slides towards the left side, when the elastic piece touches the automobile bumper, part of energy generated by automobile collision is absorbed, and then acceleration is transmitted to the magnetic flow box, so that the magnetic flow box slides towards the right side;
s3, the acceleration sensor receives signals, and after the signals are analyzed and processed by the central processing unit, the current control module controls the output current of the driving power supply according to the acceleration so as to electrify the electromagnetic coil;
and S4, after the electromagnetic coil in the S3 is electrified, the magnetorheological fluid column presents high viscosity and low fluidity under the action of a strong magnetic field, most of energy generated by automobile collision is absorbed by the magnetorheological fluid column, and meanwhile, the magnetorheological fluid column is pushed to move towards the left side through the mounting rod, so that the magnetorheological fluid column can fully absorb the energy generated by the automobile collision.
(III) advantageous effects
The invention provides an automobile collision buffer device based on a magnetorheological technology and a buffering energy absorption method. Compared with the prior art, the method has the following beneficial effects:
(1) The inner wall of the buffer shell is fixedly connected with a clip wall, an air-tight groove is formed in the clip wall and is communicated with the inside of the buffer shell, the inner surface of the air-tight groove is connected with an air-tight plug in a sliding manner, the left side of the air-tight plug is fixedly connected with a clip frame, the left side of the clip frame penetrates through the clip wall and extends to the outside of the clip wall, the left side of the clip frame is contacted with the right side of an automobile bumper, the right side of the air-tight plug is fixedly connected with a buffer spring, the right end of the buffer spring is fixedly connected with the inner wall of the air-tight groove, and the inner wall of the clip wall is movably connected with a magnetic current box, the outer surface of the magnetic flow box is fixedly connected with a piston plate, the outer surface of the piston plate is connected with the inner surface of the clip wall in a sliding mode, the left side and the right side of the inner portion of the magnetic flow box are respectively provided with a cylindrical groove and a stepped groove, the upper side and the lower side of the inner wall of the stepped groove are fixedly connected with sliding blocks, a magnetorheological fluid column is fixedly connected between the two sliding blocks, the left end of the magnetorheological fluid column penetrates through the magnetic flow box and extends to the outside of the magnetic flow box, S1, when an automobile bumper is impacted, the automobile bumper extrudes the clip frame at the moment, the clip frame is further driven to move towards the right side, the airtight plug is driven to slide towards the right side on the inner surface of the airtight groove, the buffer spring is compressed, and part of energy generated by automobile collision at the moment is absorbed by the buffer spring; s2, when the air tightness plug in the S1 moves towards the right side, gas exhausted from the air tightness groove is introduced into the buffer shell, so that the magnetic flow box slides towards the left side, when the elastic piece touches the automobile bumper, part of energy generated by automobile collision is absorbed, and then acceleration is transmitted to the magnetic flow box, so that the magnetic flow box slides towards the right side; s3, the acceleration sensor receives signals, and after the signals are analyzed and processed by the central processing unit, the current control module controls the output current of the driving power supply according to the acceleration so as to electrify the electromagnetic coil; and S4, after the electromagnetic coil in the S3 is electrified, the magnetorheological fluid column presents high viscosity and low fluidity under the action of a strong magnetic field, the magnetorheological fluid column absorbs most of energy generated by automobile collision, meanwhile, the magnetorheological fluid column is pushed to move to the left side through the mounting rod, the magnetorheological fluid column can fully absorb the energy generated by the automobile collision, the clip-shaped frame is driven to move to the right side through the automobile collision, the airtight plug slides in the airtight groove and extrudes the buffer spring, part of automobile collision impact energy can be absorbed, the magnetorheological fluid box is moved to the left to extrude an automobile bumper by utilizing the sealing performance of the airtight plug and the piston plate, the electromagnetic coil, the driving power supply and the magnetorheological fluid column are matched, the magnetorheological fluid column presents high viscosity and low fluidity, most of automobile collision impact energy is absorbed, the buffer energy absorption characteristic is good, the magnetorheological fluid column is not easy to deform during collision, the due safety function is achieved, the magnetorheological fluid column does not need to be replaced after collision deformation, and the service life is long.
(2) The automobile collision buffer device based on the magneto-rheological technology and the buffering energy-absorbing method are characterized in that an installation rod is fixedly connected to the left side of the inner wall of a buffering shell, the left end of the installation rod penetrates through a magneto-rheological box and extends to the inside of a stepped groove, the left end of the installation rod is movably connected with the right end of a magneto-rheological fluid column, elastic pieces are fixedly connected to the left side of the magneto-rheological box, the number of the elastic pieces is multiple, the installation rod is arranged, the installation rod is used for supporting the magneto-rheological fluid column to move towards the left side, and the installation rod is made to be in contact with an automobile bumper to fully buffer and absorb energy.
(3) The output end of the acceleration sensor is connected with the input end of the central processing unit, the output end of the central processing unit is connected with the input end of the current control module, the output end of the current control module is connected with the input end of the driving power supply through a wire, the acceleration sensor senses the acceleration generated by the automobile collision, and the current control module is matched with the central processing unit after analysis and processing, so that the output current value of the driving power supply can be adjusted according to the acceleration.
Drawings
FIG. 1 is a front view of the internal structure of the present invention;
FIG. 2 is a front view of the internal structure of the flux box of the present invention;
FIG. 3 is a test chart of the internal structure of the present invention;
fig. 4 is a schematic block diagram of the drive system of the present invention.
In the figure, 1-buffer shell, 2-driving system, 21-acceleration sensor, 22-central processing unit, 23-current control module, 3-automobile bumper, 4-clip wall, 5-airtight groove, 6-elastic sheet, 7-airtight plug, 8-clip frame, 9-buffer spring, 10-magnetic flow box, 11-piston plate, 12-cylinder groove, 13-step groove, 14-slide block, 15-magnetic flow liquid column, 16-driving power supply, 17-electromagnetic coil, 18-installation rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention provides a technical solution: an automobile collision buffer device based on magneto-rheological technology comprises a buffer shell 1 and a driving system 2, wherein the driving system 2 comprises an acceleration sensor 21, a central processing unit 22 and a current control module 23, the central processing unit 22 is an ARM9 series microprocessor, the output end of the central processing unit 22 is connected with the input end of the current control module 23, the output end of the current control module 23 is connected with the input end of a driving power supply 16 through a wire, the output end of the acceleration sensor 21 is connected with the input end of the central processing unit 22, a mounting rod 18 is fixedly connected to the left side of the inner wall of the buffer shell 1, the mounting rod 18 is arranged to abut against a magneto-rheological fluid column 15 to move towards the left side to enable the magneto-rheological fluid column to be in contact with an automobile bumper 3 to fully buffer and absorb energy, the left end of the mounting rod 18 penetrates through a stepped magneto-rheological box 10 and extends into a groove 13, the left end of the installation rod 18 is movably connected with the right end of the magnetorheological fluid column 15, the left side of the buffer shell 1 is movably connected with an automobile bumper 3, the inner wall of the buffer shell 1 is fixedly connected with a clip wall 4, an airtight groove 5 is formed inside the clip wall 4, the airtight groove 5 is communicated with the inside of the buffer shell 1, the inner surface of the airtight groove 5 is connected with an airtight plug 7 in a sliding manner, the left side of the airtight plug 7 is fixedly connected with a clip frame 8, the left side of the clip frame 8 penetrates through the clip wall 4 and extends to the outside of the clip wall 4, the left side of the clip frame 8 is contacted with the right side of the automobile bumper 3, the right side of the airtight plug 7 is fixedly connected with a plurality of buffer springs 9, the buffer springs 9 are uniformly distributed on the inner wall of the airtight groove 5, the right end of the buffer springs 9 is fixedly connected with the inner wall of the airtight groove 5, the inner wall of the clip wall 4 is movably connected with a magnetic flow box 10, the left side of magnetic current box 10 is fixedly connected with flexible piece 6, and the quantity of flexible piece 6 is provided with a plurality ofly, the equal fixedly connected with drive power supply 16 in the upper and lower both sides on the inside right side of magnetic current box 10, drive power supply 16 and external power supply electric connection, the inner wall fixedly connected with solenoid 17 of cylinder groove 12, solenoid 17 passes through wire electric connection with drive power supply 16, the outer fixed surface of magnetic current box 10 is connected with piston plate 11, and the surface of piston plate 11 and the internal surface sliding connection of time shape wall 4, cylinder groove 12 and ladder groove 13 have been seted up respectively to the inside left side and the right side of magnetic current box 10, the equal fixedly connected with slider 14 in the upper and lower both sides of ladder groove 13 inner wall, fixedly connected with magnetic current becomes liquid column 15 between two sliders 14, be provided with magnetic current becomes liquid in the magnetic current liquid column 15, the left end of magnetic current liquid column 15 runs through magnetic current box 10 and extends to the outside of magnetic current box 10.
The invention also discloses an automobile collision buffering energy-absorbing method based on the magnetorheological technology, which specifically comprises the following steps:
s1, when the automobile bumper 3 is impacted, the automobile bumper 3 extrudes the shape-returning frame 8 at the moment, and then the shape-returning frame 8 is driven to move towards the right side, so that the air-tightness plug 7 is driven to slide towards the right side on the inner surface of the air-tightness groove 5, the buffer spring 9 is compressed, and at the moment, part of energy generated by automobile collision is absorbed by the buffer spring 9;
s2, when the air-tightness plug 7 in the S1 moves towards the right side, gas exhausted from the air-tightness groove 5 is introduced into the buffer shell 1, so that the magnetic current box 10 slides towards the left side, when the elastic piece 6 touches the automobile bumper 3, energy generated by part of automobile collision is absorbed, and then acceleration is transmitted to the magnetic current box 10, so that the magnetic current box 10 slides towards the right side;
s3, at the moment, the acceleration sensor 21 receives signals, and after the signals are analyzed and processed by the central processing unit 22, the current control module 23 controls the output current of the driving power supply 16 according to the acceleration, so that the electromagnetic coil 17 is electrified;
and S4, after the electromagnetic coil 17 in the S3 is electrified, the magnetorheological fluid column 15 presents high viscosity and low fluidity under the action of a strong magnetic field, most of energy generated by automobile collision is absorbed by the magnetorheological fluid column 15, and meanwhile, the magnetorheological fluid column 15 is pushed to move towards the left side through the mounting rod 18, so that the energy generated by automobile collision is fully absorbed.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an automobile collision buffer based on magnetic current becomes technique, includes buffering shell (1) and actuating system (2), the left side swing joint of buffering shell (1) has car bumper (3), its characterized in that: the inner wall fixedly connected with of buffering shell (1) returns shape wall (4), the inside of returning shape wall (4) has seted up gas tightness groove (5), and inside intercommunication of gas tightness groove (5) and buffering shell (1), the internal surface sliding connection of gas tightness groove (5) has gas tightness stopper (7), the left side fixedly connected with of gas tightness stopper (7) returns shape frame (8), the left side of returning shape frame (8) runs through back shape wall (4) and extends to the outside of returning shape wall (4), the left side of returning shape frame (8) and the right side contact of car bumper (3), the right side fixedly connected with buffer spring (9) of gas tightness stopper (7), and the right-hand member of buffer spring (9) and the inner wall fixed connection of gas tightness groove (5), the inner wall activity of returning shape wall (4) is connected with magnetic current box (10), the external surface fixed connection of magnetic current box (10) has piston plate (11), and the internal surface sliding connection of piston plate (11) and the back shape wall (4), the magnetic current box (10) and the left side fixed with the slider (13) and the inner surface sliding connection of slider (13) and cylinder groove (13) and the right side fixed connection of ladder (14) respectively, the slider (14) and the inner wall (13) and the both sides between the cylinder groove (13) are connected with the ladder groove (14), the left end of the magnetorheological fluid column (15) penetrates through the magnetorheological box (10) and extends to the outside of the magnetorheological box (10), the upper side and the lower side of the right side in the magnetorheological box (10) are fixedly connected with a driving power supply (16), and the inner wall of the cylindrical groove (12) is fixedly connected with an electromagnetic coil (17);
the driving system (2) comprises an acceleration sensor (21), a central processing unit (22) and a current control module (23), the output end of the acceleration sensor (21) is connected with the input end of the central processing unit (22), the output end of the central processing unit (22) is connected with the input end of the current control module (23), and the output end of the current control module (23) is connected with the input end of a driving power supply (16) through a wire.
2. The vehicle collision buffer device based on the magnetorheological technology as claimed in claim 1, characterized in that: the number of the buffer springs (9) is multiple, and the buffer springs (9) are uniformly distributed on the inner wall of the air-tight groove (5).
3. The vehicle collision buffer device based on the magnetorheological technology as claimed in claim 2, characterized in that: buffer shell (1) inner wall's left side fixedly connected with installation pole (18), the left end of installation pole (18) runs through magnetic current box (10) and extends to the inside of ladder groove (13), the left end of installation pole (18) and the right-hand member swing joint of magnetic current liquid post (15).
4. The vehicle collision buffer device based on the magnetorheological technology as claimed in claim 3, characterized in that: the left side of the magnetic current box (10) is fixedly connected with a plurality of elastic pieces (6), and the number of the elastic pieces (6) is multiple.
5. The vehicle collision buffer device based on the magnetorheological technology as claimed in claim 4, characterized in that: the buffering energy-absorbing method specifically comprises the following steps:
s1, when an automobile bumper (3) is impacted, the automobile bumper (3) extrudes a shape returning frame (8) at the moment, and then the shape returning frame (8) is driven to move towards the right side, so that an air tightness plug (7) is driven to slide towards the right side on the inner surface of an air tightness groove (5), a buffer spring (9) is compressed, and at the moment, part of energy generated by automobile impact is absorbed by the buffer spring (9);
s2, when the air-tight plug (7) in the S1 moves towards the right side, gas exhausted from the air-tight groove (5) is introduced into the buffer shell (1) at the moment, so that the magnetic current box (10) slides towards the left side, when the elastic piece (6) touches the automobile bumper (3), part of energy generated by automobile collision is absorbed, and then acceleration is transmitted to the magnetic current box (10), so that the magnetic current box (10) slides towards the right side;
s3, at the moment, the acceleration sensor (21) receives signals, and after the signals are analyzed and processed by the central processing unit (22), the current control module (23) controls the output current of the driving power supply (16) according to the acceleration, so that the electromagnetic coil (17) is electrified;
and S4, after the electromagnetic coil (17) in the S3 is electrified, the magnetorheological fluid column (15) presents high viscosity and low fluidity under the action of a strong magnetic field, most of energy generated by automobile collision is absorbed by the magnetorheological fluid column (15), and meanwhile, the magnetorheological fluid column (15) is pushed to move to the left side through the mounting rod (18) so that the energy generated by automobile collision is fully absorbed.
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| CN201911027926.9A CN110682880B (en) | 2019-10-24 | 2019-10-24 | Automobile collision buffer device based on magnetorheological technology and energy absorption buffering method |
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| CN201911027926.9A CN110682880B (en) | 2019-10-24 | 2019-10-24 | Automobile collision buffer device based on magnetorheological technology and energy absorption buffering method |
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| CN110682880B true CN110682880B (en) | 2023-03-21 |
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| CN114607727B (en) * | 2022-03-09 | 2023-04-07 | 浙江师范大学 | Magnetorheological fluid automobile bumper |
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| CN101249820A (en) * | 2008-04-11 | 2008-08-27 | 重庆大学 | Automobile collision buffering device based on magnetic converting technique and buffering energy-absorbing method |
| KR20140084908A (en) * | 2012-12-27 | 2014-07-07 | 르노삼성자동차 주식회사 | Bumper reinforcing device and method using magneto rheological fluid |
| CN105711526A (en) * | 2014-12-05 | 2016-06-29 | 天津鑫牛鑫科技有限公司 | Telescopic automobile collision buffering energy-absorbing device |
| CN106286686A (en) * | 2016-10-28 | 2017-01-04 | 合肥工业大学 | A kind of automotive self-adaptive collision energy-absorbing system |
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