CN111271412A - Active impact buffering device of double-damping system and buffering control method thereof - Google Patents

Active impact buffering device of double-damping system and buffering control method thereof Download PDF

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Publication number
CN111271412A
CN111271412A CN202010173401.2A CN202010173401A CN111271412A CN 111271412 A CN111271412 A CN 111271412A CN 202010173401 A CN202010173401 A CN 202010173401A CN 111271412 A CN111271412 A CN 111271412A
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CN
China
Prior art keywords
end mounting
mounting frame
double
damping system
electromagnet
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Pending
Application number
CN202010173401.2A
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Chinese (zh)
Inventor
白先旭
陈根
王经常
王金桥
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Chery New Energy Automobile Co Ltd
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Chery New Energy Automobile Co Ltd
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Priority to CN202010173401.2A priority Critical patent/CN111271412A/en
Publication of CN111271412A publication Critical patent/CN111271412A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements
    • F16F15/0275—Control of stiffness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/06—Magnetic or electromagnetic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/12—Fluid damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/026—Springs wound- or coil-like

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention discloses an active impact buffer device of a double-damping system and a buffer control method thereof, wherein the device comprises: the device comprises a double-damping system, an upper end support frame, a lower end mounting frame, a compression spring, an electromagnet and a permanent magnet; the double-damping system consists of two magneto-rheological dampers and a gear rack mechanism; the buffer control method comprises the steps of judging whether impact is met or not and controlling the separation control of the upper end supporting frame and the lower end mounting frame after the impact is met. The invention can ensure effective vibration reduction when the device is impacted and protect the device to be damped.

Description

Active impact buffering device of double-damping system and buffering control method thereof
Technical Field
The invention relates to the field of active impact buffering, in particular to an active impact buffering device of a double-damping system and a buffering control method thereof.
Background
The impact buffering device has an active mode and a passive mode, the active impact buffering device has low requirements on the shock absorber compared with the passive mode, and the upper end supporting frame and the lower end mounting frame are separated more reliably, so that the shock absorption effect of the shock absorption mechanism is ensured. The common separated impact buffering device uses a spring damping mechanism, after the impact buffering device impacts, an upper end supporting frame is separated from a lower end mounting frame, energy generated by impact is transmitted through the spring damping mechanism, but the energy generated in the moment of impact is still larger.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides an active impact buffering device of a double-damping system and a buffering control method thereof so as to ensure effective vibration reduction when the device encounters impact, thereby protecting a damped device.
The invention adopts the following technical scheme for solving the technical problems:
the invention relates to an active impact buffer device based on a double-damping system, which is characterized by comprising the following components: the device comprises an upper end support frame, a double-damping system, a lower end mounting frame, a permanent magnet, a compression spring and an electromagnet;
the permanent magnets are respectively arranged in the rectangular pipes on the two sides of the upper end support frame; the electromagnets are respectively arranged in the rectangular pipes on the two sides of the lower end mounting rack; the electromagnet and the permanent magnet are coaxially arranged;
the double-damping system is arranged between the rectangular pipe in the middle of the upper end supporting frame and the rectangular pipe in the middle of the lower end mounting frame;
the compression springs are respectively arranged on two sides of the double-damping system and between the upper end supporting frame and the lower end mounting frame;
the double-damping system consists of two magneto-rheological dampers, a gear and a rack;
the output ends of the two magneto-rheological dampers are fixedly connected and then fixed on the upper end supporting frame, and the input ends of the two magneto-rheological dampers are fixedly connected with the rack respectively; one of the racks is fixedly connected to the lower end mounting rack;
the gear is arranged on the gear shaft and matched with the rack, and the gear shaft is fixedly connected with the lower end mounting frame and is connected to the lower end mounting frame through the extension spring.
The active impact buffering device is also characterized in that: the four compression springs are uniformly distributed along the circumferential direction of the magnetorheological damper.
The buffer control method of the active impact buffer device is characterized by comprising the following steps of:
step 1, arranging an acceleration sensor on the bottom plate;
step 2, when acquiring the acceleration signal of the acceleration sensor, judging whether the acceleration signal is smaller than a set threshold value, if so, indicating that no impact is encountered, and executing step 3, otherwise, indicating that the impact is encountered, and executing step 4;
step 3, controlling a current source to maintain the forward current of the electromagnet by a controller, enabling the electromagnet and the permanent magnet to attract each other, and keeping the connection between the upper end support frame and the lower end mounting frame under the action of the compression spring;
and 4, controlling a current source to provide reverse current for the electromagnet by a controller, enabling the electromagnet to be mutually exclusive with the permanent magnet and drive the upper end support frame and the lower end mounting frame to be separated, simultaneously, fixedly connecting and releasing the gear shaft with the lower end mounting frame, and driving the rack to move towards the direction of the lower end mounting frame by the extension spring through the gear shaft.
Compared with the prior art, the invention has the beneficial effects that:
1. the active impact buffering device of the invention replaces the traditional single damper by two dampers and a gear rack mechanism, the motion directions of the input ends of the two magneto-rheological dampers are always opposite through the gear rack mechanism, and when the instantaneous double-damping system of the impact buffering device dissipates impact energy, the small force transmitted from the damping mechanism to the upper end supporting frame is realized by adjusting the damping coefficients of the two magneto-rheological dampers, so that the device to be damped is more effectively protected.
2. The buffer control method is a vibration damping method of a vibration damping device of a double-damping system, and comprises the steps of judging whether impact occurs or not and controlling an upper end supporting frame to be separated from a lower end mounting frame after the impact occurs; the device receives an acceleration signal through the controller, and changes the direction of the input current of the electromagnet after the acceleration exceeds a preset threshold value, so that the separation of the upper end support frame and the lower end mounting frame is realized; the active control method realizes the separation of the upper end supporting frame and the lower end mounting frame at the moment of impact, and effectively reduces the impact transmitted to the damped device at the moment of impact.
3. The device and the method are based on magneto-rheological or electro-rheological effect, and have the characteristics of quick response, wide adjustable range and the like.
Drawings
FIG. 1 is a schematic view of an active shock absorber device according to the present invention;
FIG. 2 is a schematic illustration of the spring profile of FIG. 1;
FIG. 3 is a schematic diagram of a dual damping system of the present invention;
FIG. 4 is a flow chart of a buffer control method according to the present invention;
reference numbers in the figures: 1 upper end support frame, 2 two damping systems, 3 lower extreme mounting brackets, 4 bottom plates, 5 permanent magnets, 6 compression springs, 7 extension springs, 8 electromagnets, 9 gears, 10 gear shafts, 11 magnetorheological dampers, 12 racks.
Detailed Description
In this embodiment, as shown in fig. 1, an active impact buffering device based on a dual damping system is composed of a vibration damping device assembly, a controller, and a current source, wherein the vibration damping device assembly includes: the device comprises an upper end support frame 1, a double-damping system 2, a lower end mounting frame 3, a permanent magnet 5, a compression spring 6 and an electromagnet 8;
permanent magnets 5 are respectively arranged in the rectangular pipes on the two sides of the upper end support frame 1; electromagnets 8 are respectively arranged in the rectangular pipes on the two sides of the lower end mounting rack 3; the electromagnet 8 and the permanent magnet 5 are coaxially arranged;
a double-damping system 2 is arranged between the central position of the upper end support frame 1 and the central position of the lower end mounting frame 3;
compression springs 6 are respectively arranged on two sides of the double-damping system 2 and between the upper end support frame 1 and the lower end mounting frame 3; in a specific implementation, as shown in fig. 2, four compression springs 6 are uniformly distributed along the circumferential direction of the magnetorheological damper 11.
The double-damping system 2 consists of two magnetorheological dampers 11, a gear 9 and a rack 12;
as shown in fig. 1 and fig. 3, the output ends of the two magnetorheological dampers 11 are fixedly connected and then fixed on the upper end support frame 1, and the input ends of the two magnetorheological dampers 11 are fixedly connected with the rack 12; the rack 12 is fixedly connected to the lower end mounting frame 3;
the gear 9 is arranged on a gear shaft 10 and is matched with the rack 12, and the gear shaft 10 is fixedly connected with the lower end mounting frame 3 and is connected to the lower end mounting frame 3 through an extension spring 7.
In this embodiment, as shown in fig. 4, the damping control method based on the active shock damping device is performed as follows:
step 1, arranging an acceleration sensor on a bottom plate 4;
step 2, when the controller acquires an acceleration signal of the acceleration sensor, judging whether the acceleration signal is smaller than a set threshold value, if so, indicating that no impact is encountered, and executing step 3, otherwise, indicating that the impact is encountered, and executing step 4;
step 3, controlling a current source to maintain the forward current of the electromagnet 8 by the controller, enabling the electromagnet 8 and the permanent magnet 5 to attract each other, and keeping the connection between the upper end support frame 1 and the lower end mounting frame under the action of the compression spring 6;
and 4, controlling a current source to provide reverse current for the electromagnet 8 by the controller, enabling the electromagnet 8 and the permanent magnet 5 to be mutually exclusive, driving the upper end support frame 1 and the lower end mounting frame 3 to be separated, simultaneously, fixedly connecting and releasing the gear shaft 10 and the lower end mounting frame 3, and driving the gear 9 to move towards the direction of the lower end mounting frame 3 by the extension spring 7 through the gear shaft 10.
The two racks 12 are coaxially and fixedly connected with the two magnetorheological dampers 11, and the motion directions of the input ends of the two magnetorheological dampers 11 relative to the gear 9 are always opposite through the gear 9. Defining the velocity direction as positive upwards, the output force of the dual damping system 2 is related as follows:
Fl＝clvl(1)
Fr＝crvr(2)
vl-vgear＝vgear-vr(3)
Fout＝Fl+Fr(4)
formula (1) to formula (4): flThe output force of the left end magneto-rheological damper 11 is shown; frThe output force of the right magnetorheological damper 11 is the same; c. ClIs the damping coefficient of the left end magnetorheological damper 11; c. CrIs the damping coefficient of the right end magnetorheological damper 11; v. oflIs the excitation speed of the left end magnetorheological damper 11; v. ofrIs the excitation speed of the right end magnetorheological damper 11; v. ofgearIs the speed of the gear 9 relative to the ground; foutIs the output force of the dual damping system 2;
when an impact signal is received by an impact buffer device control system at the moment of impact, the original fixed connection between the gear shaft 10 and the upper end support frame 1 is released, the gear shaft moves downwards under the action of the pre-tightened extension spring 7, and the speed of the gear 9 relative to the ground is smaller than the excitation speed of the left end magneto-rheological damper 11. According to equation (3), the excitation velocity of the right damper 11 is smaller than the excitation velocity of the left magnetorheological damper 11 and may even be in the opposite direction. According to the formula (4), the force output to the upper end support frame 1 is small under the condition of dissipating the same impact energy by adjusting the damping coefficients of the two magnetorheological dampers 11 at the impact moment.

Claims (3)

1. An active impact buffering device based on a double-damping system is characterized by comprising: the device comprises an upper end support frame (1), a double-damping system (2), a lower end mounting frame (3), a permanent magnet (5), a compression spring (6) and an electromagnet (8);
the permanent magnets (5) are respectively arranged in the rectangular pipes on the two sides of the upper end support frame (1); the electromagnets (8) are respectively arranged in the rectangular pipes on the two sides of the lower end mounting rack (3); the electromagnet (8) and the permanent magnet (5) are coaxially arranged;
the double-damping system (2) is arranged between the rectangular pipe in the middle of the upper end support frame (1) and the rectangular pipe in the middle of the lower end mounting frame (3);
the compression springs (6) are respectively arranged on two sides of the double-damping system (2) and between the upper end support frame (1) and the lower end mounting frame (3);
the double-damping system (2) consists of two magneto-rheological dampers (11), a gear (9) and a rack (12);
the output ends of the two magneto-rheological dampers (11) are fixedly connected and then fixed on the upper end support frame (1), and the input ends of the two magneto-rheological dampers (11) are fixedly connected with the rack (12) respectively; one of the racks (12) is fixedly connected to the lower end mounting rack (3);
the gear (9) is arranged on the gear shaft (10) and matched with the rack (12), and the gear shaft (10) is fixedly connected with the lower end mounting frame (3) and is connected to the lower end mounting frame (3) through the extension spring (7).
2. The active impact mitigation device of claim 1, wherein: the four compression springs (6) are uniformly distributed along the circumferential direction of the magnetorheological damper (11).
3. The damping control method of an active shock damping device according to claim 1, comprising the steps of:
step 1, arranging an acceleration sensor on a bottom plate (4);
step 2, when acquiring the acceleration signal of the acceleration sensor, judging whether the acceleration signal is smaller than a set threshold value, if so, indicating that no impact is encountered, and executing step 3, otherwise, indicating that the impact is encountered, and executing step 4;
step 3, controlling a current source to maintain the forward current of the electromagnet (8) by a controller, enabling the electromagnet (8) and the permanent magnet (5) to attract each other, and keeping the connection between the upper end support frame (1) and the lower end mounting frame under the action of the compression spring (6);
step 4, the controller controls the current source to provide reverse current for the electromagnet (8), so that the electromagnet (8) and the permanent magnet (5) are mutually exclusive and drive the upper end support frame (1) and the lower end mounting frame (3) to be separated, meanwhile, the gear shaft (10) is fixedly connected with the lower end mounting frame (3) to be removed, and the extension spring (7) drives the rack (12) to move towards the direction of the lower end mounting frame (3) through the gear shaft (10).
CN202010173401.2A 2020-03-12 2020-03-12 Active impact buffering device of double-damping system and buffering control method thereof Pending CN111271412A (en)

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CN202010173401.2A CN111271412A (en) 2020-03-12 2020-03-12 Active impact buffering device of double-damping system and buffering control method thereof

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CN202010173401.2A CN111271412A (en) 2020-03-12 2020-03-12 Active impact buffering device of double-damping system and buffering control method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112497454A (en) * 2020-11-16 2021-03-16 铭际建筑科技(泰兴)有限公司 Circulating spray assembly type building structure maintenance device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050116276A (en) * 2004-06-07 2005-12-12 주식회사 파워엠엔씨 Active vibration damper
CN201934568U (en) * 2011-02-17 2011-08-17 谭和平 Twin-cylinder differential magnetorheological damper
KR20120111450A (en) * 2011-03-31 2012-10-10 목포해양대학교 산학협력단 Active vibration control apparatus using motor
CN103195858A (en) * 2013-04-15 2013-07-10 沈阳航空航天大学 Magnetorheological buffering unit structure based on impact load and control method thereof
CN109341421A (en) * 2018-11-06 2019-02-15 沈阳天眼智云信息科技有限公司 Active anti-vibration method, explosion-proof seat control system and the explosion-proof seat of explosion-proof seat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050116276A (en) * 2004-06-07 2005-12-12 주식회사 파워엠엔씨 Active vibration damper
CN201934568U (en) * 2011-02-17 2011-08-17 谭和平 Twin-cylinder differential magnetorheological damper
KR20120111450A (en) * 2011-03-31 2012-10-10 목포해양대학교 산학협력단 Active vibration control apparatus using motor
CN103195858A (en) * 2013-04-15 2013-07-10 沈阳航空航天大学 Magnetorheological buffering unit structure based on impact load and control method thereof
CN109341421A (en) * 2018-11-06 2019-02-15 沈阳天眼智云信息科技有限公司 Active anti-vibration method, explosion-proof seat control system and the explosion-proof seat of explosion-proof seat

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112497454A (en) * 2020-11-16 2021-03-16 铭际建筑科技(泰兴)有限公司 Circulating spray assembly type building structure maintenance device

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Application publication date: 20200612