CN201007333Y - Composite magnetic suspension damping shock absorber - Google Patents
Composite magnetic suspension damping shock absorber Download PDFInfo
- Publication number
- CN201007333Y CN201007333Y CNU2007200339834U CN200720033983U CN201007333Y CN 201007333 Y CN201007333 Y CN 201007333Y CN U2007200339834 U CNU2007200339834 U CN U2007200339834U CN 200720033983 U CN200720033983 U CN 200720033983U CN 201007333 Y CN201007333 Y CN 201007333Y
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- permanent magnet
- shock absorber
- piston
- upper cover
- magnetic suspension
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 43
- 230000035939 shock Effects 0.000 title claims abstract description 41
- 238000013016 damping Methods 0.000 title claims abstract description 35
- 239000000725 suspension Substances 0.000 title claims abstract description 16
- 239000002131 composite material Substances 0.000 title claims abstract description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005339 levitation Methods 0.000 abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 7
- 230000005389 magnetism Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Vibration Prevention Devices (AREA)
Abstract
本实用新型提供了一种复合型磁浮阻尼减振器，包括底板和置于底板上方的上盖，在底板和上盖的侧面间设有相互导向滑动的导向侧板，并在底板和上盖之间设有支撑上盖的主弹簧，在底板上安装有缸体，在缸体内设有极性相同的上永磁体和下永磁体，在上永磁体上方设有活塞，该活塞通过活塞杆与上盖连接，在上永磁体与活塞之间设有副弹簧。本实用新型的优点是将主弹簧、阻尼结构、磁浮结构、空气弹簧结合在一起，不仅提高了减振器的承载力，增大了主弹簧的柔度，而且减小了减振器的结构尺寸，同时有使其具有安装高度的可调节功能，所以更适合在安装高度受限制的情况下使用。
The utility model provides a composite magnetic suspension damping shock absorber, which comprises a base plate and an upper cover placed above the base plate, and a guide side plate that guides and slides mutually is arranged between the side surfaces of the base plate and the upper cover, and the base plate and the upper cover A main spring supporting the upper cover is arranged between them, a cylinder body is installed on the bottom plate, an upper permanent magnet and a lower permanent magnet with the same polarity are arranged in the cylinder body, and a piston is arranged above the upper permanent magnet, and the piston passes through the piston. The rod is connected with the upper cover, and an auxiliary spring is arranged between the upper permanent magnet and the piston. The utility model has the advantage that the main spring, the damping structure, the magnetic levitation structure and the air spring are combined together, which not only improves the bearing capacity of the shock absorber, increases the flexibility of the main spring, but also reduces the structure of the shock absorber. size, and it has the adjustable function of installation height, so it is more suitable for use when the installation height is limited.
Description
1. Field of the invention
The utility model relates to a shock absorber, especially a be applied to electromechanical device's such as large-scale centrifuge, motor compound magnetic levitation damping shock absorber.
2. Background of the invention
With the rapid development of modern industries, the requirements of various industries on various electromechanical devices are higher and higher, so that the size of the devices with powerful functions, such as centrifuges, large water pumps, large motors and the like, is larger and larger. The larger the vibration of the larger electromechanical equipment during working due to resonance or passing through a critical rotating speed, the larger the vibration is, not only can annoying noise be generated, but also the normal working of the machine can be influenced. Existing vibration reducers are classified into two main categories for reducing such vibrations: one is a magnetic suspension vibration damper which connects a main spring and a magnetic suspension structure in series for work. The shock absorber is mainly applied to modern vehicles for roads such as automobiles, motorcycles and the like. Although the shock absorber has better bearing capacity, the flexibility of the shock absorber is poor, and the height of the shock absorber is fixed and cannot be adjusted. The other type is a damper combining an air spring and a main spring, and although the damper has good flexibility, the damper has small bearing capacity, poor impact resistance and large volume.
3. Summary of the invention
1. The purpose of the invention is as follows: in order to solve the current shock absorber volume and change along with the bearing capacity change, flexible, impact resistance can not unify the not enough of coordination, the utility model provides a compound magnetism floats damping shock absorber, the device combines mainspring, damping structure, magnetism to float structure three together, can not only bear great load, and the volume is more than current shock absorber is littleer in addition to its flexibility, impact resistance all are better than current shock absorber. Can meet the requirements of various working environments such as vibration isolation, vibration reduction and the like.
2. The technical scheme is as follows: a compound magnetic levitation damping shock absorber, it includes the bottom plate and arranges the upper cover of bottom plate top in, be equipped with the gliding direction curb plate of mutual direction between the side of bottom plate and upper cover to be equipped with the main spring that supports the upper cover between bottom plate and upper cover, install the piston body on the bottom plate, be equipped with polarity-identical last permanent magnet and lower permanent magnet in the piston body, be equipped with the piston above last permanent magnet, this piston passes through the piston rod and is connected with the upper cover, is equipped with the secondary spring between last permanent magnet and piston. Damping oil is filled in the cylinder, and the damping hole is arranged on the piston plate.
In order to enable the shock absorber to generate effective damping during working, damping oil is filled in the piston body positioned on the upper permanent magnet, and a damping oil through hole is formed in the piston, so that a damping structure is formed.
A rubber pad is arranged between the bottom of the piston body and the lower permanent magnet, and the rubber pad can slow down vibration at the bottom of the shock absorber.
An anti-wear ring and a sealing ring are arranged on the upper permanent magnet. The lower permanent magnet is provided with a vent hole which is connected with the air valve through an air passage. The airway mainly has two functions: firstly, when the shock absorber leaks air, air can be supplied through the air passage by the air valve; and secondly, the air spring height can be adjusted by inflating the cavity between the permanent magnets through the air passage, so that the height of the whole shock absorber is adjusted.
The utility model discloses a theory of operation is: the load is transferred to the main spring and the piston rod through the upper cover, the piston rod transfers the load to the upper permanent magnet through the piston and the auxiliary spring, and the upper permanent magnet transfers the load to the air spring and the lower permanent magnet formed by the magnetic gap. The load is borne by the above three parts together. When the upper load is larger, the main spring generates larger deformation, and the air spring and the magnetic suspension structure generate larger resistance force. The transfer coefficient of the shock absorber is small because the force directly transmitted to the shock absorber bottom plate through the main spring is small. And the damping structure formed by the damping hole and the damping oil will generate proper damping.
If the height of the shock absorber needs to be adjusted, gas can be conveyed into a cavity between the permanent magnets through the gas valve through the gas channel, and due to the fact that the pressure in the cavity is increased, the auxiliary spring deforms and drives the piston rod to move, and finally the main spring deforms, and the height of the whole shock absorber is increased.
3. Has the advantages that: the utility model discloses simple structure, the cost is lower, connects main spring, magnetism floating structure, air spring, damping structure in parallel together, has not only improved the bearing capacity of shock absorber, has increased the gentle degree of main spring, has reduced the structural dimension of shock absorber moreover, has simultaneously to make it have the adjustable function of mounting height, so more be fit for using under the restricted condition of mounting height.
4. Description of the drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the upper cover.
Fig. 3 is a schematic view of the structure of the base plate.
Fig. 4 is a diagram of a static stress model of the present invention.
5. Detailed description of the preferred embodiments
The present invention will be further explained with reference to the accompanying drawings.
The composite magnetic suspension damping shock absorber comprises a bottom plate 1, an upper cover 2, a main spring 3, a cylinder body 4, an upper permanent magnet 5, a lower permanent magnet 6, a piston 7, a piston rod 8, a damping oil through hole 9, an auxiliary spring 10, a rubber pad 11, an air passage 12 and an air valve 13; bottom plate 1 and upper cover 2 are the square, and its side guide is cylindrical, and two container openings are relative, and main spring 3 settles on bottom plate 1 to prop up upper cover 2 jointly, install cylinder 4 on bottom plate 1, be equipped with polarity identical last permanent magnet 5 and lower permanent magnet 6 in cylinder 4, leave a definite space between two permanent magnets, be equipped with piston 7 above last permanent magnet 5, this piston 7 is connected with upper cover 2 through piston rod 8, is equipped with auxiliary spring 10 between last permanent magnet 5 and piston 7. The cylinder 4 above the upper permanent magnet 5 is filled with damping oil, and the piston 7 is provided with a damping oil through hole 9. A rubber pad 11 is arranged between the bottom of the cylinder body 4 and the lower permanent magnet 6. The lower permanent magnet 6 is provided with a vent hole which is connected with an air valve 13 through an air passage 12. When the shock absorber bears load, the load is transmitted to the main spring 3 and the piston rod 8 through the upper cover 2, the load is transmitted to the upper permanent magnet 5 through the piston 7 and the auxiliary spring 10 by the piston rod 8, and the load is transmitted to the air spring and the magnetic suspension structure, namely the magnetic gap and the lower permanent magnet 6, by the upper permanent magnet 5. The load borne by the shock absorber is thus borne by the upper parts together. When the upper part bears a large load, the main spring 3 generates large deformation, and the air spring and the magnetic suspension structure generate large resistance. Because the force directly transmitted to the bottom plate of the shock absorber through the main spring 3 is small, the transmission coefficient of the shock absorber is small, and the damping structure formed by the damping hole and the damping oil can generate proper damping due to the movement of the piston. The shock absorber is much smaller in size than a conventional spring shock absorber when subjected to a large load. The bearing capacity of the shock absorber can be properly adjusted through the air spring; the installation height of the air spring can be adjusted by the air spring, and the specific operation mode is as follows: air is conveyed into the cavity between the permanent magnets through the air valve 13 from the air passage 12, and the auxiliary spring 10 is deformed due to the increase of pressure in the cavity to drive the piston rod 8 to move, so that the upper cover plate moves, and finally the main spring 3 is deformed, even if the height of the whole shock absorber is increased.
Calculation and basic parameter selection of the magnetic suspension damping vibration absorber:
let F 1 Is the restoring force of the spring; f 4 Is the magnetic gap buoyancy.
According to the deformation:
F 1 ＝K(y 0 -y)
from the equilibrium conditions: static initial operating pressure
In the formulas (1) and (2), K: the stiffness of the spring; Φ: the magnetic flux of the magnetic gap field; b: magnetic flux density (magnetic induction intensity); f m : magnetomotive force of the permanent magnet. Formula (2) can also be represented as:
the equations (2) and (3) are the static deformation curves of the magnetic suspension damping shock absorber. It determines the basic performance of the shock absorber.
The working bearing capacity of the magnetic suspension shock absorber is as follows:
the differential equation of motion is as follows:
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200339834U CN201007333Y (en) | 2007-02-02 | 2007-02-02 | Composite magnetic suspension damping shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200339834U CN201007333Y (en) | 2007-02-02 | 2007-02-02 | Composite magnetic suspension damping shock absorber |
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| Publication Number | Publication Date |
|---|---|
| CN201007333Y true CN201007333Y (en) | 2008-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200339834U Expired - Fee Related CN201007333Y (en) | 2007-02-02 | 2007-02-02 | Composite magnetic suspension damping shock absorber |
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| CN (1) | CN201007333Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100278623A1 (en) * | 2009-04-29 | 2010-11-04 | Novellus Systems, Inc. | Magnetic rotational hardstop for robot |
| CN101709763B (en) * | 2009-12-10 | 2012-07-04 | 华中科技大学 | Horizontal two-degree-of-freedom vibration isolating mechanism |
| CN102853018A (en) * | 2012-08-21 | 2013-01-02 | 华中科技大学 | Vibration isolator with magnetic suspension unit |
| CN108591351A (en) * | 2018-05-09 | 2018-09-28 | 河南科技大学 | A kind of hydraulic electromagnetic vibration insulating system and its oscillation damping method suitable for transplanter |
| CN109356961A (en) * | 2018-11-23 | 2019-02-19 | 华中科技大学 | A mechanism for amplifying negative stiffness coefficient and ultra-low frequency shock absorber composed of the same |
| CN111365397A (en) * | 2020-03-24 | 2020-07-03 | 清华大学 | Magnetic liquid damping shock absorber with opposite magnets |
| CN119103285A (en) * | 2024-09-02 | 2024-12-10 | 大连理工大学 | A permanent magnetic airbag composite vibration isolator and its magneto-solid coupling stiffness calculation method |
-
2007
- 2007-02-02 CN CNU2007200339834U patent/CN201007333Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100278623A1 (en) * | 2009-04-29 | 2010-11-04 | Novellus Systems, Inc. | Magnetic rotational hardstop for robot |
| US8757345B2 (en) * | 2009-04-29 | 2014-06-24 | Novellus Systems, Inc. | Magnetic rotational hardstop for robot |
| CN101709763B (en) * | 2009-12-10 | 2012-07-04 | 华中科技大学 | Horizontal two-degree-of-freedom vibration isolating mechanism |
| CN102853018A (en) * | 2012-08-21 | 2013-01-02 | 华中科技大学 | Vibration isolator with magnetic suspension unit |
| CN108591351A (en) * | 2018-05-09 | 2018-09-28 | 河南科技大学 | A kind of hydraulic electromagnetic vibration insulating system and its oscillation damping method suitable for transplanter |
| CN109356961A (en) * | 2018-11-23 | 2019-02-19 | 华中科技大学 | A mechanism for amplifying negative stiffness coefficient and ultra-low frequency shock absorber composed of the same |
| CN111365397A (en) * | 2020-03-24 | 2020-07-03 | 清华大学 | Magnetic liquid damping shock absorber with opposite magnets |
| CN111365397B (en) * | 2020-03-24 | 2020-10-30 | 清华大学 | Magnetic liquid damping shock absorber with opposite magnets |
| CN119103285A (en) * | 2024-09-02 | 2024-12-10 | 大连理工大学 | A permanent magnetic airbag composite vibration isolator and its magneto-solid coupling stiffness calculation method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 |