CN105065552A - Hydraulic shock absorber - Google Patents

Hydraulic shock absorber Download PDF

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Publication number
CN105065552A
CN105065552A CN201510424156.7A CN201510424156A CN105065552A CN 105065552 A CN105065552 A CN 105065552A CN 201510424156 A CN201510424156 A CN 201510424156A CN 105065552 A CN105065552 A CN 105065552A
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CN
China
Prior art keywords
piston
main
cover
diameter
magnetic liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510424156.7A
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Chinese (zh)
Inventor
丁一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
706th Institute Of No2 Research Institute Casic
Original Assignee
706th Institute Of No2 Research Institute Casic
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 706th Institute Of No2 Research Institute Casic filed Critical 706th Institute Of No2 Research Institute Casic
Priority to CN201510424156.7A priority Critical patent/CN105065552A/en
Publication of CN105065552A publication Critical patent/CN105065552A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535Magnetorheological [MR] fluid dampers

Abstract

The invention discloses a hydraulic shock absorber. The hydraulic shock absorber comprises a main body shell, a piston, a magnet, magnetic liquid and a piston rod, wherein the piston is fixed to the piston rod, the main body shell contains the magnetic liquid, and a through hole where the piston rod is arranged is formed in the upper end of the main body shell; the piston penetrates through the through hole to be arranged in the main body shell, the piston of the piston rod makes contact with the magnetic liquid, and the magnetic liquid is sealed in a cavity formed by the piston and the main body shell; the upper side of the piston rod is in close contact with the upper side of the main body shell, and the magnet is suspended in the magnetic liquid. By the adoption of the hydraulic shock absorber, mechanical shock of mechanical equipment or other equipment can be effectively damped. The hydraulic shock absorber is simple in structure, low in manufacturing cost and capable of being used for shock absorption in various environments.

Description

A kind of hydraulic damper
Technical field
The invention belongs to mechanical engineering damping control technology field, particularly a kind of hydraulic damper.
Background technique
Existing hydraulic shock-absorption technology is comparatively ripe, but Normal hydraulic shock absorber structure is comparatively complicated, and the easy oxidation deterioration of Normal hydraulic shock absorber fluid force feed, affect the damping performance of hydraulic damper.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic damper, in order to solve the problem of above-mentioned prior art.
A kind of hydraulic damper of the present invention, wherein, comprising: main body cover, piston, magnet, magnetic liquid and piston rod; This piston and this piston rod are fixed, this magnetic liquid is filled in this main body cover, the upper end of this main body cover offers the through hole arranging this piston rod, this piston is arranged in this main body cover through this through hole, the piston of this piston rod contacts with this magnetic liquid, this magnetic fluid sealing is in the cavity that piston and this main body cover form, and the upside close contact of the upside of this piston rod and this main body cover, this magnet is suspended in this magnetic liquid.
According to an embodiment of hydraulic damper of the present invention, wherein, also comprise: the top of one first flange plate and this piston rod is fixed by screw.
According to an embodiment of hydraulic damper of the present invention, wherein, also comprise: between this piston and inner chamber of this main body cover, be provided with seal ring, to carry out the sealing of magnetic liquid.
According to an embodiment of hydraulic damper of the present invention, wherein, also comprise: this main body cover comprises shell and the second flange plate interfixes, this piston rod is arranged in this main body cover through this flange plate.
According to an embodiment of hydraulic damper of the present invention, wherein, this magnetic liquid is adsorbed on around this magnet by the magnetic force effect of this magnet, has cavity between this magnetic liquid and this main body cover.
According to an embodiment of hydraulic damper of the present invention, wherein, the material of this magnet is rubidium iron boron, and the material of sealing circle is fluorine rubber, and the material of this main body cover and this piston is aluminium.
According to an embodiment of hydraulic damper of the present invention, wherein, this magnet is cylindrical, and this main body cover is for justifying shape, and this flange plate is annular, and sealing circle is O RunddichtringO.
According to an embodiment of hydraulic damper of the present invention, wherein, the internal diameter of this main body cover is between 85mm-95mm, and external diameter is 85mm-100mm, is 40mm-45mm deeply; The diameter of this piston is between 85mm-95mm, and thickness is between 10mm-15mm; The diameter of this magnet is between 15mm-20mm, and thickness is between 25mm-35mm; The volume of this magnetic liquid is between 150mL-180mL; This O RunddichtringO internal diameter is between 80mm-90mm, and diameter of section is between 3mm-5mm.
According to an embodiment of hydraulic damper of the present invention, wherein, this internal diameter of outer cover is 90mm, and external diameter is 94mm, dark 42mm; This piston diameter is 89.5mm, and thickness is 13mm; Cylinder-shaped magnet diameter is 16mm, and thickness is 30mm; The volume of magnetic liquid is 170mL; O RunddichtringO internal diameter is 84mm, diameter of section 4mm.
According to an embodiment of hydraulic damper of the present invention, wherein, described circular housing internal diameter is 92mm, and external diameter is 96mm, dark 44mm; Piston diameter is 91.5mm, and thickness is 15mm; Cylinder-shaped magnet diameter is 20mm, and thickness is 40mm; The volume of magnetic liquid is 220mL.
To sum up, the present invention can play good cushioning effect to the mechanical shock of machinery or miscellaneous equipment effectively, its shock-damping structure is simple, cheap, go for the damping application under multiple environment, its hydraulic oil is the magnetic liquid of stable performance, because it has the characteristic be adsorbed under magnetic force effect around permanent magnet, therefore the hydraulic oil in oil hydraulic cylinder can not be full of oil hydraulic cylinder, magnetic liquid not easily leaks by during piston press distortion.
Accompanying drawing explanation
Figure 1 shows that the schematic diagram of hydraulic damper of the present invention.
Embodiment
For making object of the present invention, content and advantage clearly, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
Figure 1 shows that the schematic diagram of hydraulic damper of the present invention, as shown in Figure 1, hydraulic damper comprises: shell 1, piston 2, magnet 3, magnetic liquid 4, flange plate 5, piston rod 6, flange plate 7, seal ring 8 and screw 9.
With reference to figure 1, flange plate 5 forms hydraulic damper main body cover with shell 1 is fixing.Flange plate 7 and piston rod 6 are fixed by screw 9.Magnetic liquid 4 is filled in circular housing 1.Magnet 3 is placed in magnetic liquid 4.Through hole in the middle of flange plate 5 mates with piston rod 6, and piston rod 6 is fixed with piston 2.Piston 2 is provided with seal ring 8, to carry out the sealing of magnetic liquid 4 with the interior of shell 1 between mutually.
With further reference to Fig. 1, magnet 3 is cylinder-shaped magnet 3, and what shell 1 was hollow justifies shape shell 1, and flange plate 5 is annular flange dish 5, and seal ring 8 is O RunddichtringO 8.
With reference to figure 1, cylinder-shaped magnet 3 is suspended in magnetic liquid 4.Magnetic liquid 4 is adsorbed on around cylinder-shaped magnet 3 by the effect of cylinder-shaped magnet 3 magnetic force, has portion cavity between magnetic liquid 4 and shell 1, magnetic liquid 4 can be compressed, and have corresponding rebounding force.
With reference to figure 1, further, between circular housing flange 1 and annular flange dish 5 by being welded and fixed.Piston 2 and piston rod 6 are threaded connection.Piston 2 is by close contact on the downside of magnetic liquid 4 pressure and annular flange dish 5.Piston rod 6 and flange plate 7 are threaded connection by screw 9.The sidepiece of piston 2 offers circular groove, and O RunddichtringO 8 is inlaid in circular groove.
With reference to figure 1, further, cylinder-shaped magnet 3 material is rubidium iron boron.O RunddichtringO 8 material is fluorine rubber.The material of circular housing 1, piston 2 and annular flange dish 5 is aluminium.
With reference to figure 1, for a kind of preferred dimensions of hydraulic damper of the present invention, circular housing internal diameter is between 85mm-95mm, and external diameter is 85mm-100mm, is 40mm-45mm deeply.The diameter of piston 2 is between 85mm-95mm, and thickness is between 10mm-15mm.The diameter of cylinder-shaped magnet 3 is between 15mm-20mm, and thickness is between 25mm-35mm.The volume of magnetic liquid 4 is between 150mL-180mL.O RunddichtringO 8 internal diameter is between 80mm-90mm, and diameter of section is between 3mm-5mm.
With reference to figure 1, for a kind of preferred embodiment, circular housing 1 internal diameter is 90mm, and external diameter is 94mm, dark 42mm.Piston 2 diameter is 89.5mm, and thickness is 13mm.Cylinder-shaped magnet 3 diameter is 16mm, and thickness is 30mm.The volume of magnetic liquid 4 is 170mL.O RunddichtringO 8 internal diameter is 84mm, diameter of section 4mm.
With reference to figure 1, for a kind of preferred embodiment, circular housing 1 internal diameter is 92mm, and external diameter is 96mm, dark 44mm.Piston 2 diameter is 91.5mm, and thickness is 15mm.Cylinder-shaped magnet 3 diameter is 20mm, and thickness is 40mm.The volume of magnetic liquid 4 is 220mL.
With reference to figure 1, sketch the assembly process of hydraulic damper of the present invention.Cylinder-shaped magnet 3 is sidelong in circular housing 1 inner chamber, injects magnetic liquid 4 to cylinder blanket 1 inner chamber; Piston 2 is threaded with piston rod 6, and piston rod 6 is connected by screw 9 with flange plate 7; O RunddichtringO 8 is inlaid in piston 2 circular groove, and piston 2 is installed by O RunddichtringO 8 and circular housing 1 bore seal.Circular housing 1 flange and annular flange dish 5 flange welding.
With reference to figure 1, sketch the working procedure of hydraulic damper of the present invention.When flange plate 7 is by external vertical down pressure F, piston 2 moves down along circular housing 1 inwall, magnetic liquid 4 forced compression, and cylinder-shaped magnet 3 magnetic line of force is forced compression simultaneously, and piston 2 is subject to magnetic liquid 4 restoring force effect vertically upward, stops mobile gradually; After downforce F disappears, piston 2 is subject to magnetic liquid 4 restoring force effect vertically upward, moves up until be returned to initial position along circular housing 1 inwall.
To sum up, the present invention can play good cushioning effect to the mechanical shock of machinery or miscellaneous equipment effectively, its shock-damping structure is simple, cheap, go for the damping application under multiple environment, its hydraulic oil is the magnetic liquid of stable performance, because it has the characteristic be adsorbed under magnetic force effect around permanent magnet, therefore the hydraulic oil in oil hydraulic cylinder can not be full of oil hydraulic cylinder, magnetic liquid not easily leaks by during piston press distortion.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.

Claims (10)

1. a hydraulic damper, is characterized in that, comprising: main body cover, piston, magnet, magnetic liquid and piston rod;
Wherein, this piston and this piston rod are fixed, this magnetic liquid is filled in this main body cover, the upper end of this main body cover offers the through hole arranging this piston rod, this piston is arranged in this main body cover through this through hole, and the piston of this piston rod contacts with this magnetic liquid, and this magnetic fluid sealing is in the cavity that piston and this main body cover form, the upside close contact of the upside of this piston rod and this main body cover, this magnet is suspended in this magnetic liquid.
2. hydraulic damper as claimed in claim 1, is characterized in that, also comprise: the top of one first flange plate and this piston rod is fixed by screw.
3. hydraulic damper as claimed in claim 1, is characterized in that, also comprise: be provided with seal ring between this piston and inner chamber of this main body cover, to carry out the sealing of magnetic liquid.
4. hydraulic damper as claimed in claim 1, is characterized in that, also comprise: this main body cover comprises shell and the second flange plate interfixes, and this piston rod is arranged in this main body cover through this flange plate.
5. hydraulic damper as claimed in claim 1, it is characterized in that, this magnetic liquid is adsorbed on around this magnet by the magnetic force effect of this magnet, has cavity between this magnetic liquid and this main body cover.
6. hydraulic damper as claimed in claim 1, it is characterized in that, the material of this magnet is rubidium iron boron, and the material of sealing circle is fluorine rubber, and the material of this main body cover and this piston is aluminium.
7. hydraulic damper as claimed in claim 3, it is characterized in that, this magnet is cylindrical, and this main body cover is for justifying shape, and this flange plate is annular, and sealing circle is O RunddichtringO.
8. hydraulic damper as claimed in claim 7, it is characterized in that, the internal diameter of this main body cover is between 85mm-95mm, and external diameter is 85mm-100mm, is 40mm-45mm deeply; The diameter of this piston is between 85mm-95mm, and thickness is between 10mm-15mm; The diameter of this magnet is between 15mm-20mm, and thickness is between 25mm-35mm; The volume of this magnetic liquid is between 150mL-180mL; This O RunddichtringO internal diameter is between 80mm-90mm, and diameter of section is between 3mm-5mm.
9. hydraulic damper as claimed in claim 7, it is characterized in that, this internal diameter of outer cover is 90mm, and external diameter is 94mm, dark 42mm; This piston diameter is 89.5mm, and thickness is 13mm; Cylinder-shaped magnet diameter is 16mm, and thickness is 30mm; The volume of magnetic liquid is 170mL; O RunddichtringO internal diameter is 84mm, diameter of section 4mm.
10. hydraulic damper as claimed in claim 7, it is characterized in that, described circular housing internal diameter is 92mm, and external diameter is 96mm, dark 44mm; Piston diameter is 91.5mm, and thickness is 15mm; Cylinder-shaped magnet diameter is 20mm, and thickness is 40mm; The volume of magnetic liquid is 220mL.
CN201510424156.7A 2015-07-17 2015-07-17 Hydraulic shock absorber Pending CN105065552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510424156.7A CN105065552A (en) 2015-07-17 2015-07-17 Hydraulic shock absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510424156.7A CN105065552A (en) 2015-07-17 2015-07-17 Hydraulic shock absorber

Publications (1)

Publication Number Publication Date
CN105065552A true CN105065552A (en) 2015-11-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108799394A (en) * 2018-07-23 2018-11-13 上海交通大学 Dynamic vibration absorber and bump leveller group's system
CN113074209A (en) * 2021-03-16 2021-07-06 广西科技大学 Miniature magneto-rheological vibration damper

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01203730A (en) * 1988-02-09 1989-08-16 Nec Corp Damper gear
CN1563737A (en) * 2004-04-21 2005-01-12 夏齐霄 Buffering antiknock appts. having order acting elastomer
CN101382178A (en) * 2008-10-16 2009-03-11 上海微电子装备有限公司 Active vibration damping and vibration isolating device and active vibration damping and vibration isolating system
US20090241890A1 (en) * 2008-03-26 2009-10-01 Honda Motor Co., Ltd. Damping force variator
CN102213285A (en) * 2011-06-14 2011-10-12 北京交通大学 Magnetic liquid damping vibration attenuation device
CN102374256A (en) * 2010-08-16 2012-03-14 富泰华工业(深圳)有限公司 Shock-absorbing device
CN102518736A (en) * 2011-12-15 2012-06-27 哈尔滨工业大学 Compact and light magnetorheological damper with expanded dynamic output force adjustable range

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01203730A (en) * 1988-02-09 1989-08-16 Nec Corp Damper gear
CN1563737A (en) * 2004-04-21 2005-01-12 夏齐霄 Buffering antiknock appts. having order acting elastomer
US20090241890A1 (en) * 2008-03-26 2009-10-01 Honda Motor Co., Ltd. Damping force variator
CN101382178A (en) * 2008-10-16 2009-03-11 上海微电子装备有限公司 Active vibration damping and vibration isolating device and active vibration damping and vibration isolating system
CN102374256A (en) * 2010-08-16 2012-03-14 富泰华工业(深圳)有限公司 Shock-absorbing device
CN102213285A (en) * 2011-06-14 2011-10-12 北京交通大学 Magnetic liquid damping vibration attenuation device
CN102518736A (en) * 2011-12-15 2012-06-27 哈尔滨工业大学 Compact and light magnetorheological damper with expanded dynamic output force adjustable range

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108799394A (en) * 2018-07-23 2018-11-13 上海交通大学 Dynamic vibration absorber and bump leveller group's system
CN108799394B (en) * 2018-07-23 2020-02-21 上海交通大学 Dynamic vibration absorber and vibration absorber group system
CN113074209A (en) * 2021-03-16 2021-07-06 广西科技大学 Miniature magneto-rheological vibration damper

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Application publication date: 20151118

RJ01 Rejection of invention patent application after publication