CN100510459C - Damp self-compensated ball-hinge type back/top frame vibration-isolator - Google Patents
Damp self-compensated ball-hinge type back/top frame vibration-isolator Download PDFInfo
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- CN100510459C CN100510459C CNB2007100223724A CN200710022372A CN100510459C CN 100510459 C CN100510459 C CN 100510459C CN B2007100223724 A CNB2007100223724 A CN B2007100223724A CN 200710022372 A CN200710022372 A CN 200710022372A CN 100510459 C CN100510459 C CN 100510459C
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Abstract
A damping self-compensation ball hinge type back/top frame vibration isolator is choosing the central shaft (3) as axial center, the shaft is enclosed with an outer ball hinge assembly composed of a bushing (4), a lower ball hinge sleeve (5), an upper ball hinge sleeve (14) and a ball hinge ring (6); an elastic assembly composed of a conical spring (8) and a buffer pad sleeve (9) is disposed on the lower ball hinge sleeve and the upper ball hinge sleeve (14), the small head end of the conical spring (8) is pressing on the lower ball hinge sleeve and the upper ball hinge sleeve, the big head end of the conical spring (8) is pressed on a housing (1), the buffer pad sleeve (9) is enclosing the upper ball hinge sleeve, and a spacer ring (10) is enclosing the buffer pad sleeve (9) to separate the conical spring to a left part and a right part; the left and right sides of the lower ball hinge sleeve and upper ball hinge sleeve are respectively disposed with a left friction wafer (7), a right friction wafer (71) and a ball hinge ring (6), the outer side of the left friction wafer (7) is the housing; a butterfly shape spring (12) is disposed on the outer side of the right friction wafer (71), an adjusting threaded sleeve (13) is revolved into the housing to form an independent component.
Description
Technical field
The present invention is the back of the body/back/top frame vibration-isolator that a kind of electronic equipment vibrating isolation system uses.Belong to electronic equipment vibration isolation buffering device technical field.
Background technique
Theory of vibration isolation shows, utilizes the vibration isolator of metal dry-friction damping, because wearing and tearing descend damping force, can cause vibration isolator anti-vibration and shock effect to descend.So in the total life cycle that vibration isolator uses, damping force is carried out self compensation, can keep the long time stability of vibration isolator performance.
Theory of vibration isolation also shows, the vibration isolator that is used for standard PC case, must have and in the same mechanical structure, adopt different-stiffness and can regulate damping and bottom vibration isolator adaptive, the back of the body/upper frame formula vibrating isolation system that has low coupling, high stability and low vibratory impulse transmissibility with composition.It is zero that adaptation technique requires its vertical stiffness, is zero around three axial torsional stiffnesies, is zero thereby make three axial torques.
Summary of the invention
Technical problem: the object of the present invention is to provide a kind of damp self-compensated ball-hinge type back of the body/back/top frame vibration-isolator, this vibration isolator realizes that by changing awl spring structure and elastic parameter rigidity is adjustable; Realize that by structural parameter and the adjustment impacting force that changes the butterfly spring damping force is adjustable; And by adopting accurate zero stiffness butterfly spring to carry out wear-self-compensation and keeping damping force and stablize.Adopt the ball pivot structure that equipment is had around three orthogonal axial freely rotating, realize that three axial torques are zero.
Technological scheme: damp self-compensated ball-hinge type back of the body frame vibration isolator of the present invention comprises standing part and elastic damping vibration damping part; In elastic damping vibration damping part, be the axle center with the central shaft be with on it by lining, down the ball pivot cover, on the ectosphere hinge component formed of ball pivot cover and ball pivot ring; Following ball pivot cover, on ball pivot put and be provided with the elastic component of forming by awl spring and cushion pad cover, the little head end of awl spring is pressed in down the ball pivot cover, upward ball pivot puts, the stub end of awl spring withstands on the shell, the cushion pad cover is enclosed within outside the ball pivot cover, spacer ring is enclosed within outside the buffering cushion cover, and two awl springs are separated; Form the damping force compensation assembly by shell, friction plate, belleville spring and adjustment swivel nut; Following ball pivot cover, on both sides outside the ball pivot cover be respectively equipped with left friction plate and right friction plate, be provided with the ball pivot ring in the inboard of left friction plate and right friction plate, be shell in the outside of left friction plate.
When this vibration isolator is back of the body frame vibration isolator (Fig. 1), the elastic damping vibration damping of above vibration isolator is partly put into support, the two ends that are about to central shaft link to each other with support with bolt and become whole of vibration isolator, and the elastic damping vibration damping part of vibration isolator can be free to slide on central shaft, and vertical stiffness is zero.
When this vibration isolator is back/top frame vibration-isolator (Fig. 2), the shell of above vibration isolator is fixed on the outside top board, an end of central shaft is unsettled, the other end be connected by the vibration isolation electronic equipment.
Characteristics of the present invention are:
(1) by changing the steel wire diameter d and the number of active coils n of awl spring, make the quality m of its rigidity and electronic equipment suitable.Be that m is big, awl spring horizontal rigidity strengthens.
(2) belleville spring has accurate zero stiffness elastic characteristic (Fig. 3), changes the sheet number of its wall thickness or butterfly spring in parallel, can change F
1, F
2Value, but between δ displacement amount its
, its spring rate K is:
(1)
Initial pressure is transferred to F
2, then total wear extent of friction member less than
During δ, variation in pressure
F is very little, has realized the self compensation of damping force.
(3) adopt the ball pivot assembly, make electronic equipment when being subjected to vibratory impulse, climbing equal excitation, can be in the unrestricted motion of six-freedom degree direction.And torque is zero.
(4) adopt buffer spring to form and have the elastic component that becomes the rigidity elastic characteristic, adapted to the electronic equipment mass M and changed greatly with awl spring coupling, and the requirement of vibrating isolation system characteristic close.
(5) adopted the generalization technology: have the back of the body frame of identical anti-vibration and shock characteristic and the vibration isolator of two kinds of different installation forms of upper frame, in 14 kinds of members, standard member reaches 10 kinds and accounts for 71%.
Working procedure:
(1) electronic equipment is when launch vehicle (vehicle, naval vessel, aircraft) is gone up work, and the vertical vibration of launch vehicle is excited by impact, bears by carrying out adaptive bottom vibration isolator according to the electronic equipment barycenter at the centroid position of bottom surface projection.At this moment, the vertical stiffness of the back of the body (top) frame vibration isolator is zero.
When back of the body frame vibration isolator is subjected to horizontal vibration, impact and centrifugal acceleration equal excitation, can bring into play the effect of anti-vibration and shock and raising stabilization of equipment performance to electronic equipment.
(2) back of the body frame vibration isolator (Fig. 1) is when support is subjected to horizontal drive, and external excitation is applied on the spring assembly by troffer, central shaft and ball pivot assembly, after vibration isolation and buffering, passes to electronic equipment by shell, connecting bolt.
Back/top frame vibration-isolator (Fig. 2) is directly passed on the elastic component by bearing when being subjected to horizontal drive, passes on central shaft and the electronic equipment by the ball pivot assembly then.
The damping force that frictional force becomes the dissipation impact energy at the volley and suppresses to resonate between ball pivot ring and friction plate, shell.
(3) when launch vehicle produced corner displacement, the ball pivot assembly can be followed compensation at any time, and making moment of torsion is zero, thereby has improved the electronic equipment stress.
Beneficial effect: the existing relatively vibration isolator of vibration isolator of the present invention has following advantage:
(1) the general part quantity of Cai Yonging is many, is convenient to tissue production.
(2) in the same enclosure space, change the steel wire diameter d of taper spring and the combination of number of active coils n, the series product that can realize having the different-stiffness characteristic.
(3) adopt butterfly spring to carry out self compensation, kept vibration isolator performance long time stability the wear extent of frictional damping member with zero stiffness characteristic.
(4) the sheet number of the sheet dish spring thick and in parallel by changing disk spring how much, can reach required pressure and dry-friction damping power.
(5) adopt outer ball pivot structure, enlarged the Horizontal displacement space, improved the horizontal anti-vibration and shock effect of vibration isolator.
Description of drawings
Fig. 1 is a back-frame type vibration isolator general structure schematic representation of the present invention.
Wherein have: shell 1, troffer 2, central shaft 3, lining 4, following ball pivot cover 5, ball pivot ring 6, left side friction plate 7 and right friction plate 71, awl spring 8, buffering cushion cover 9, spacer ring 10, connecting bolt 11, belleville spring 12, adjust swivel nut 13, last ball pivot cover 14, and lock bolt B1, bullet pad B2 and plain cushion B3.
Fig. 2 is a upper frame formula vibration isolator general structure schematic representation of the present invention.
Fig. 3 is the accurate zero stiffness characteristic curve of butterfly spring of the present invention.
Embodiment
The damping force self-compensated ball-hinge type back of the body/back/top frame vibration-isolator of the present invention is by shell 1, troffer 2, central shaft 3, lining 4, following ball pivot cover 5, ball pivot ring 6, friction plate 7, awl spring 8, buffering cushion cover 9, spacer ring 10, connecting bolt 11, belleville spring 12 is adjusted swivel nut 13, and last ball pivot overlaps 14 compositions such as grade.
This vibration isolator comprises standing part and elastic damping vibration damping part; In elastic damping vibration damping part, with central shaft 3 be the axle center be with on it by lining 4, down ball pivot cover 5, on ball pivot overlap 14 and the ectosphere hinge component formed of ball pivot ring 6; Following ball pivot cover 5, on be provided with by awl spring 8 and cushion pad cover 9 elastic components of forming on the ball pivot cover 14, the little head end of awl spring 8 is pressed in down ball pivot cover 5, goes up on the ball pivot cover 14, the stub end of awl spring 8 withstands on the shell 1, buffering cushion cover 9 is enclosed within outside the ball pivot cover 14, and spacer ring 10 is enclosed within outside the buffering cushion cover 9 and with two awl springs 8 and separates; Adjustment swivel nut 13 by right friction plate 71, belleville spring 12 and screw-in shell 1 is formed the damping force compensation assembly; Following ball pivot cover 5, on both sides outside the ball pivot cover 14 be respectively equipped with left friction plate 7 and right friction plate 71, be provided with ball pivot ring 6 in the inboard of left friction plate 7 and right friction plate 71, be shell 1 in the outside of left friction plate 7.
Back of the body frame vibration isolator (Fig. 1) assembly method:
When this vibration isolator is back of the body frame vibration isolator, above vibration isolator is put into support 2, the two ends that are about to central shaft 3 link to each other with support 2 with bolt B 1 and become whole of vibration isolator, and vibration damping vibration isolator partly can be free to slide on central shaft 3, and vertical stiffness is zero.
Left friction plate 7 and right friction plate 71, two ball pivot rings 6 are put into shell 1 by assembly relation shown in Figure 1, put into belleville spring 12 then, solidify after screwing in Adjusting bolt Adjusting screw 13 and being transferred to required damping.At last, be inserted in central shaft 3 and put into support 2, lock with lock bolt B1, bullet pad B2 and plain cushion B3 at two ends.
Back/top frame vibration-isolator (Fig. 2) assembly method:
Cancellation troffer 2 and connecting bolt 11 are designed to the seat structure form with shell 1.It is identical with back-frame type back vibration isolator that method is debug in its inside.Be inserted in the center coupling shaft 3 that is designed to the connecting screw rod form at last, and spacing at upper end embedding spring collar.When this vibration isolator is back/top frame vibration-isolator, the shell 1 of above vibration isolator is fixed on the outside top board, an end of central shaft 3 is unsettled, the other end be connected by the vibration isolation electronic equipment.
Claims (4)
1, a kind of damp self-compensated ball-hinge type back of the body/back/top frame vibration-isolator is characterized in that this vibration isolator comprises standing part and elastic damping vibration damping part; In elastic damping vibration damping part, with central shaft (3) be the axle center on its axle, be with by lining (4), down ball pivot cover (5), go up the ectosphere hinge component that ball pivot cover (14) and ball pivot ring (6) are formed; Descend ball pivot cover (5), upward be provided with the elastic component of forming by awl spring (8) and cushion pad cover (9) on the ball pivot cover (14), the little head end of awl spring (8) is pressed in down ball pivot cover (5), goes up on the ball pivot cover (14), the stub end of awl spring (8) withstands on the shell (1), buffering cushion cover (9) is enclosed within outside the ball pivot cover (14), spacer ring (10) is enclosed within outside buffering cushion cover (9), and will bore spring (8) and separate; Form the damping force compensation assembly by shell (1), right friction plate (71), belleville spring (12) and adjustment swivel nut (13); Being respectively equipped with left friction plate (7) and right friction plate (71) in the both sides of descending ball pivot cover (5), go up outside the ball pivot cover (14), being provided with ball pivot ring (6) in the inboard of left friction plate (7) and right friction plate (71), is shell (1) in the outside of left friction plate (7).
2. the damp self-compensated ball-hinge type back of the body/back/top frame vibration-isolator according to claim 1, when it is characterized in that this vibration isolator for back of the body frame vibration isolator, the elastic damping vibration damping of above vibration isolator is partly put into support (2), the two ends that are about to central shaft (3) link to each other with support (2) with bolt assembly and become whole of vibration isolator, the elastic damping vibration damping part of vibration isolator can be free to slide on central shaft (3), and vertical stiffness is zero.
3, the damp self-compensated ball-hinge type back of the body/back/top frame vibration-isolator according to claim 1, when it is characterized in that this vibration isolator is back/top frame vibration-isolator, the shell (1) of above vibration isolator is fixed on the outside top board, and an end of central shaft (3) is unsettled, the other end be connected by the vibration isolation thing.
4, the damp self-compensated ball-hinge type back of the body/back/top frame vibration-isolator according to claim 1 is characterized in that butterfly spring (12) has accurate zero stiffness characteristic, the wear extent of friction compensation sheet voluntarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100223724A CN100510459C (en) | 2007-05-15 | 2007-05-15 | Damp self-compensated ball-hinge type back/top frame vibration-isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100223724A CN100510459C (en) | 2007-05-15 | 2007-05-15 | Damp self-compensated ball-hinge type back/top frame vibration-isolator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101055012A CN101055012A (en) | 2007-10-17 |
| CN100510459C true CN100510459C (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100223724A Active CN100510459C (en) | 2007-05-15 | 2007-05-15 | Damp self-compensated ball-hinge type back/top frame vibration-isolator |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335048A (en) * | 2013-06-06 | 2013-10-02 | 南京捷诺环境技术有限公司 | Damping adjustable vibration isolator with combined springs |
| CN103807342B (en) * | 2014-02-25 | 2015-08-26 | 南京捷诺环境技术有限公司 | A kind of damping adjustable spherical hinge formula backrest vibration isolator |
| CN108644281B (en) * | 2018-06-29 | 2023-06-27 | 中国船舶重工集团公司第七一九研究所 | Limiting device for pressure application of shock absorber |
| CN110107627B (en) * | 2019-05-20 | 2024-07-19 | 苏州天成涂装系统股份有限公司 | Spring quick-change mechanism |
| CN110953278A (en) * | 2019-11-06 | 2020-04-03 | 南京理工大学紫金学院 | Friction damper |
| CN111923936A (en) * | 2020-07-15 | 2020-11-13 | 同济大学 | Quasi-zero stiffness vibration isolator for railway vehicle traction motor |
| CN113305409B (en) * | 2021-06-18 | 2023-03-24 | 无锡康贝电子设备有限公司 | Resistance welding hinge sleeve, AE box door applying resistance welding hinge sleeve and welding process |
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| Publication number | Publication date |
|---|---|
| CN101055012A (en) | 2007-10-17 |
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Assignee: Nanjing Jienuo Environment Technology Co., Ltd. Assignor: Ji Xin Contract record no.: 2011320000218 Denomination of invention: Damp self-compensated ball-hinge type back/top frame vibration-isolator Granted publication date: 20090708 License type: Exclusive License Open date: 20071017 Record date: 20110310 |