CN102261423B - Self-feedback control friction damper - Google Patents
Self-feedback control friction damper Download PDFInfo
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- CN102261423B CN102261423B CN2011101081661A CN201110108166A CN102261423B CN 102261423 B CN102261423 B CN 102261423B CN 2011101081661 A CN2011101081661 A CN 2011101081661A CN 201110108166 A CN201110108166 A CN 201110108166A CN 102261423 B CN102261423 B CN 102261423B
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- piston body
- friction plate
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- piston
- air chamber
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Abstract
The invention discloses a self-feedback control friction damper and belongs to the technical field of dampers. The damper comprises an outer shell and a piston body which is arranged in the outer shell, and is characterized in that the outer shell is provided with a rectangular inner cavity with one closed end and one open end; an inner side wall at the closed end is provided with an actuating piston; the piston body is of a hollow rectangular structure, one end of the piston body is provided with an end cover with an axial through hole, and the other end of the piston body is provided with a boosting air chamber in which gas is filled in a seal assembling mode; the actuating piston passes through the axial through hole on the end cover; at least one outer side wall of the piston body is provided with a friction plate; the friction plate and the outer side wall of the piston body are connected through at least one piston pin; the pin hole of the piston pin is communicated with the inner cavity of the piston body; and the inner cavity of the piston body is filled with a liquid substance. The damper provided by the invention has the advantages of simple and reasonable structure and high energy consumption capability, the damp force is regulated according to the variation of the amplitude, and the damper is especially suitable for the environments with complex working conditions and vibration conditions.
Description
Technical field
The invention belongs to the damper technique field, particularly a kind of can be according to vibration source amplitude adjustment damping force size, and can utilize signal of vibrating to carry out the frcition damper of feedback control.
Background technique
Vibration is the physical phenomenon that extensively is present in building, the machinery, and in the manufacturing and designing of the electromechanical equipment of proper functioning, electronic instrument and ocean platform, oscillation phenomenon is inevitable under complex environment.Its harm that causes generally has: destroy mechanism's intensity; Destroy the nominal operating condition of instrument, instrument, even cause instrument work malfunctioning; Cause construct noise, worsen staff's working environment.Therefore, vibration control is most important in machinery and structure Design.
Vibration control is the acting in conjunction that utilizes control mechanism and vibrational structure, the transmission of the vibrational energy between control structure, thereby the destruction that prevents equipment effectively.
The passive energy dissipation technology is present widely used vibration control technology.The passive energy dissipation technology mainly adds power consumption parts (damper) through some position at structure or equipment; Thereby for structure provides certain additional damping and additional stiffness; Come the dissipates vibration energy through the power consumption parts under the effects such as system or structure are carried at wind, earthquake or operation power; Reduce the dynamic effect of external load, thereby protect the safety of agent structure and improve staff's operating conditions system architecture.Passive energy dissipation is a kind of reasonable, effective, safe damping technology, and this technology is developing at present and be perfect gradually.
Frcition damper is a kind of typical passive energy dissipation technical application.It forms the mechanism that can produce slip and frictional force by the metal friction sheet under certain pretightening force, by the slide relative of structural vibrations drive frcition damper, reach the purpose of the protection structure of vibration damping.The shortcoming of at present common frcition damper is the positive pressure that can only provide constant, and no matter whether damper works, and positive pressure exists all the time; And existing frcition damper can not be realized feedback control, thereby has reduced the sensitivity of energy-dissipating device.And vibrating under the operating mode environment complicated and changeable, require damper to feed back according to signal of vibrating, make its damping force that provides carry out self-regulating with working condition, change the energy dissipation capacity of damper through adjustment.
Summary of the invention
The present invention is in order to remedy the deficiency of existing technology, provides that a kind of damping force is adjustable, the self feed back control frcition damper of good damping result, long service life, passive energy dissipation that reliability is high.
The present invention realizes through following technological scheme: it comprises frame and the piston body that is arranged in the said frame; Its special way is: said frame has the cuboid shape inner chamber; One of which end sealing, the other end opening is provided with actuating plunger at the madial wall of closed end; Said piston body is the rectangular structure of inner hollow, and the one of which end is provided with the end cap that has axial hole, and the other end sealing is equipped with the supercharging air chamber that inside is filled with gas, and said actuating plunger is located in the axial hole on the end cap; On at least one outer side wall of piston body, be provided with friction plate, said friction plate is connected through at least one wrist pin with the outer side wall of piston body, and the pin-and-hole of said wrist pin communicates with the inner chamber of piston body; The inner chamber of piston body is filled with liquid.
Working principle of the present invention is: when vibration source vibrates; Actuating plunger moves with respect to piston body, and the inner liquid of piston body acts on the supercharging air chamber, the gas accumulation of energy supercharging in the supercharging air chamber; Liquid pressure in the piston body increases and propagation of pressure is given the wrist pin that connects piston body and friction plate; The stressed increase of end face in the wrist pin piston body has changed the positive pressure that friction plate bore that is attached thereto, and the frictional force of friction plate and frame relative movement obtains increasing.Positive pressure is big more, and frictional force is big more.The present invention can utilize signal of vibrating to carry out self feed back control.Friction plate stressed size also relevant with the quantity and the size design of wrist pin.The quantity of the wrist pin that connects according to the difference of structure, requirement of strength and friction plate can be different, can be one or more.According to different vibration damping requirements, also can be chosen on the different outer side wall of piston body friction plate is set, can select two-sided or four sides friction energy-dissipating vibration damping.When selecting two-sided passive energy dissipation, said friction plate is two, is separately positioned on two opposite external side walls of piston body.When selecting the four sides passive energy dissipation, said friction plate is four, is separately positioned on four outer side walls of piston body.
In order to make wrist pin effectively transmit liquid material pressure, and drive friction plate and move with piston body, said wrist pin is the straight pin that an end has the conical surface, has corresponding taper pin-hole on the said friction plate.Wrist pin connects the motion can guarantee friction plate and piston body with friction plate through taper pin, can effectively transmit pressure again.
Among the present invention, said supercharging air chamber can adopt the diaphragm type air chamber, and it comprises diaphragm of rubber and gas chamber shell, and diaphragm of rubber is positioned at the cavity of piston body.When actuating plunger moved downward, the liquid in the piston body acted on diaphragm of rubber, the gas accumulation of energy supercharging in the diaphragm of rubber stress deformation, supercharging air chamber.
Among the present invention, said supercharging air chamber also can be the capsule-type air chamber.When actuating plunger moved downward, the liquid in the piston body acted on the rubber capsule, the gas accumulation of energy supercharging in the rubber capsule stress deformation, supercharging air chamber.
The invention has the beneficial effects as follows: the present invention utilizes liquid and the supercharging of supercharging air chamber to change the suffered positive pressure of friction plate through wrist pin; Thereby change the size of the friction damping force between friction plate and frame inwall, finally reach the purpose of dissipates vibration energy.Compare with existing technology, it is simple, reasonable that the present invention has structural design, and applied widely, energy dissipation capacity is strong, characteristics such as reliability height; In addition; Damper of the present invention can adapt to vibration frequency, situation that amplitude variations is bigger; And can control the suffered positive pressure of friction plate according to the amplitude size, thus to the vibration variation of vibration source corresponding energy dissipation capacity is provided, effectively improve the energy dissipation capacity of damper.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of the invention;
Fig. 2 be among Fig. 1 A-A to sectional view;
Fig. 3 be among Fig. 1 B-B to sectional view;
Fig. 4 be among Fig. 1 C-C to sectional view;
Fig. 5 be among Fig. 1 D-D to sectional view;
Among the figure: 1, frame, 2, actuating plunger, 3, end cap, 4, wrist pin, 5, friction plate, 6, piston body, 7, diaphragm of rubber, 8, lower end cap, 9, gas chamber shell, 10, fitting seat.
Embodiment
Embodiment through indefiniteness and combine accompanying drawing that the present invention is further described below:
Shown in accompanying drawing, be a kind of self feed back control frcition damper, it comprises frame 1 and piston body 6.Frame 1 has the cuboid shape inner chamber, the sealing of one of which end, and the other end opening is provided with the actuating plunger 2 that is provided with vertically in the centre of closed end, and actuating plunger 2 is cylindrical stock.Piston body 6 is the rectangular structure of inner hollow, the cavity both ends open, and its upper end is provided with end cap 3, has axial hole in the middle of the end cap 3, and the lower end of piston body 6 is provided with lower end cap 8, and lower end cap 8 intermediate throughholes and hole wall are provided with screw thread.Piston body 6 is arranged in the frame 1, and actuating plunger 2 is installed in the axial hole on the end cap 3 of piston body 6, and both can relatively move.On at least one outer side wall of piston body 6, be provided with friction plate 5, friction plate 5 is connected through at least one wrist pin 4 with the outer side wall of piston body 6, and the pin-and-hole of wrist pin 4 communicates with the inner chamber of piston body 6.Shown in the present embodiment is on four outer side walls of piston body 6, to be respectively equipped with friction plate 5, and every friction plate 5 is connected with the outer side wall of piston body 6 through six wrist pins 4 respectively.Wrist pin 4 is straight pins that an end has the conical surface, has corresponding taper pin-hole on the friction plate 5, and both cooperatively interact.Sealing is equipped with the supercharging air chamber that is filled with gas in piston body 6 lower ends, and said supercharging air chamber is made up of diaphragm of rubber 7 and gas chamber shell 9, and diaphragm of rubber 7 is positioned at the cavity of piston body 6, and gas chamber shell 9 outer walls are provided with screw thread and are connected with piston body lower end cap 8.The inner chamber of piston body 6 is filled with a certain amount of liquid, and is connected on the fitting seat 10 through bolt.
Working principle of the present invention is: during the vibration source vibration; Actuating plunger 2 moves downward with respect to piston body 6, the liquid effect supercharging air chamber of piston body 6 inside, diaphragm of rubber 7 stress deformations of supercharging air chamber; Under the gas accumulation of energy pressurization in the supercharging air chamber, liquid pressure increases; The stressed increase of end face in wrist pin 4 piston bodies has changed the suffered positive pressure of friction plate 5, and friction plate 5 increases with the frictional force of frame 1 relative movement.Positive pressure is big more, and frictional force is big more, and damper passive energy dissipation ability is strong more.
Present embodiment is a four sides friction plate acting in conjunction passive energy dissipation; In the practical application, can select the number of power consumption acting surface according to different vibration damping needs; As can two friction plates be separately positioned on two opposite external side walls of piston body 6; Realize two-sided passive energy dissipation, or only on one of them outer side wall of piston body 6, friction plate is set, realize the single face passive energy dissipation.And the quantity of wrist pin also can be provided with different numbers according to various structure, intensity needs.
The supercharging air chamber that adopts in the present embodiment is the diaphragm type air chamber, certainly, also can adopt the supercharging air chamber of other structures according to design demand, as: adopt the capsule-type air chamber, it comprises rubber capsule and gas chamber shell, and the rubber capsule is positioned at the cavity of piston body.When actuating plunger moved downward, the liquid in the piston body acted on the rubber capsule, the gas accumulation of energy supercharging in the rubber capsule stress deformation, supercharging air chamber; Can also utilize the outside accumulator mode of installing to substitute the internal pressurization air chamber.
The present invention can utilize signal of vibrating to carry out feedback control, can adjust the size of damping force according to oscillation amplitude change, is particularly suitable for working condition complicacy, vibration situation complex environment, effectively improves the vibration control application.
Other parts among the present invention adopt prior art, repeat no more at this.
Claims (6)
1. frcition damper is controlled in a self feed back; Comprise frame (1) and be arranged on the piston body (6) in the said frame (1), it is characterized in that: said frame (1) has the cuboid shape inner chamber, the sealing of one of which end; The other end opening is provided with actuating plunger (2) at the madial wall of closed end; Said piston body (6) is the rectangular structure of inner hollow, and the one of which end is provided with the end cap (3) that has axial hole, and the other end sealing is equipped with the supercharging air chamber that inside is filled with gas, and said actuating plunger (2) is located in the axial hole on the end cap (3); On at least one outer side wall of piston body (6), be provided with friction plate (5), said friction plate (5) is connected through at least one wrist pin (4) with the outer side wall of piston body (6), and the pin-and-hole of said wrist pin (4) communicates with the inner chamber of piston body (6); The inner chamber of piston body (6) is filled with liquid.
2. self feed back control frcition damper according to claim 1, it is characterized in that: said wrist pin (4) is the straight pin that an end has the conical surface, said friction plate has corresponding taper pin-hole on (5).
3. self feed back control frcition damper according to claim 1 and 2, it is characterized in that: said supercharging air chamber comprises diaphragm of rubber (7) and gas chamber shell (9), and diaphragm of rubber (7) is positioned at the cavity of piston body (6).
4. self feed back control frcition damper according to claim 1, it is characterized in that: said friction plate (5) is two, is separately positioned on two opposite external side walls of piston body (6).
5. self feed back control frcition damper according to claim 1, it is characterized in that: said friction plate (5) is four, is separately positioned on four outer side walls of piston body (6).
6. self feed back control frcition damper according to claim 1, it is characterized in that: said supercharging air chamber is the capsule-type air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101081661A CN102261423B (en) | 2011-04-28 | 2011-04-28 | Self-feedback control friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101081661A CN102261423B (en) | 2011-04-28 | 2011-04-28 | Self-feedback control friction damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102261423A CN102261423A (en) | 2011-11-30 |
| CN102261423B true CN102261423B (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101081661A Expired - Fee Related CN102261423B (en) | 2011-04-28 | 2011-04-28 | Self-feedback control friction damper |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546011A (en) * | 2016-01-26 | 2016-05-04 | 济南大学 | Expansion sealing device |
| CN105570371B (en) * | 2016-02-26 | 2017-08-11 | 吉林大学 | A kind of liquid pressure regulation and with the dry friction type shock absorber of velocity correlation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4955467A (en) * | 1987-11-10 | 1990-09-11 | Fluor Corporation | Energy damping device |
| US6065741A (en) * | 1997-08-07 | 2000-05-23 | Honeywell Inc. | Pneumatic isolator element |
| CN202040265U (en) * | 2011-04-28 | 2011-11-16 | 济南大学 | Self-feedback control friction damper |
-
2011
- 2011-04-28 CN CN2011101081661A patent/CN102261423B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4955467A (en) * | 1987-11-10 | 1990-09-11 | Fluor Corporation | Energy damping device |
| US6065741A (en) * | 1997-08-07 | 2000-05-23 | Honeywell Inc. | Pneumatic isolator element |
| CN202040265U (en) * | 2011-04-28 | 2011-11-16 | 济南大学 | Self-feedback control friction damper |
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| Publication number | Publication date |
|---|---|
| CN102261423A (en) | 2011-11-30 |
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Granted publication date: 20121114 Termination date: 20180428 |