CN202040265U - Self-feedback control friction damper - Google Patents
Self-feedback control friction damper Download PDFInfo
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- CN202040265U CN202040265U CN2011201300645U CN201120130064U CN202040265U CN 202040265 U CN202040265 U CN 202040265U CN 2011201300645 U CN2011201300645 U CN 2011201300645U CN 201120130064 U CN201120130064 U CN 201120130064U CN 202040265 U CN202040265 U CN 202040265U
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- piston body
- friction plate
- piston
- air chamber
- feed back
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Abstract
The utility model discloses a self-feedback control friction damper, which belongs to the technical field of dampers and comprises a casing and a piston body arranged in the casing. The casing is provided with a cuboid inner cavity, one end of the casing is sealed, the other end of the casing is open, and an actuating piston is arranged on the inner side wall at the sealed end. The piston body is in a cuboid structure with hollow interior, an end cover provided with an axial through hole is arranged at one end of the piston body, a pressurizing air chamber filled with air is assembled at the other end of the piston body in sealing mode, and the actuating piston penetrates through the axial through hole at the end cover. A friction board which is arranged on at least one outer side wall of the piston body is connected with the outer side wall of the piston body through at least one piston pin, and pin holes of the piston pins are communicated with the inner cavity of the piston body. Liquid objects are filled in the inner cavity of the piston body. The self-feedback control friction damper is simple and reasonable in structure, strong in energy-consumption capacity, capable of adjusting damping force according to changes of the amplitude, and especially suitable for environment with complex working conditions and vibration conditions.
Description
Technical field
The utility model belongs to the damper technique field, particularly a kind ofly can adjust the damping force size according to the vibration source amplitude, 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) by some position at structure or equipment; thereby for structure provides certain additional damping and additional stiffness; come the dissipates vibration energy by 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 that a kind of typical passive energy dissipation technology is used.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, by adjusting the energy dissipation capacity that changes damper with working condition.
The model utility content
The utility model is in order to remedy the deficiencies in the prior art, 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 utility model is achieved by the following technical solution: it comprises frame and is arranged on the interior piston body of described frame, its special way is: described frame has the cuboid shape inner chamber, one end sealing, the other end opening is provided with actuating plunger at the madial wall of closed end; Described piston body is the rectangular structure of inner hollow, and the one 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 described actuating plunger is located in the axial hole on the end cap; Be provided with friction plate at least one outer side wall of piston body, described friction plate is connected by at least one wrist pin with the outer side wall of piston body, and the pin-and-hole of described 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 utility model is: when vibration source vibrates, actuating plunger moves with respect to piston body, the liquid of piston body inside acts on the supercharging air chamber, 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 of connection 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 utility model 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, described friction plate is two, is separately positioned on two opposite external side walls of piston body.When selecting the four sides passive energy dissipation, described 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, described wrist pin is the straight pin that an end has the conical surface, has corresponding taper pin-hole on the described friction plate.Wrist pin connects the motion can guarantee friction plate and piston body with friction plate by taper pin, can effectively transmit pressure again.
In the utility model, described 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.
In the utility model, described 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 beneficial effects of the utility model are: the utility model is to utilize liquid and the supercharging of supercharging air chamber to change the suffered positive pressure of friction plate by 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 prior art, the utlity model has structural design simply, rationally, applied widely, energy dissipation capacity is strong, characteristics such as reliability height; In addition, damper of the present utility model 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 provide corresponding energy dissipation capacity at the vibration variation of vibration source, effectively improve the energy dissipation capacity of damper.
Description of drawings
Fig. 1 is the structural representation of the utility model specific embodiment;
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 below by indefiniteness also is further described the utility model in conjunction with the accompanying drawings:
As shown in drawings, 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 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.Be provided with friction plate 5 at least one outer side wall of piston body 6, friction plate 5 is connected by 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 to be respectively equipped with friction plate 5 on four outer side walls of piston body 6, and every friction plate 5 is connected with the outer side wall of piston body 6 by 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 described supercharging air chamber is made 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 by bolt.
Working principle of the present utility model 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 be according to different vibration damping needs, select the number of power consumption acting surface, as two friction plates being 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 different structures, 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 the design needs, 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 utility model 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 complexity, vibration situation complex environment, effectively improves the vibration control application.
Other parts in the utility model adopt prior art, do not repeat them here.
Claims (6)
1. frcition damper is controlled in a self feed back, comprise frame (1) and be arranged on the interior piston body (6) of described frame (1), it is characterized in that: described frame (1) has the cuboid shape inner chamber, the sealing of one end, the other end opening is provided with actuating plunger (2) at the madial wall of closed end; Described piston body (6) is the rectangular structure of inner hollow, and the one 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 described actuating plunger (2) is located in the axial hole on the end cap (3); Be provided with friction plate (5) at least one outer side wall of piston body (6), described friction plate (5) is connected by at least one wrist pin (4) with the outer side wall of piston body (6), and the pin-and-hole of described 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: described wrist pin (4) is the straight pin that an end has the conical surface, described 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: described 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: described 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: described 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: described supercharging air chamber is the capsule-type air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201300645U CN202040265U (en) | 2011-04-28 | 2011-04-28 | Self-feedback control friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201300645U CN202040265U (en) | 2011-04-28 | 2011-04-28 | Self-feedback control friction damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202040265U true CN202040265U (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201300645U Expired - Lifetime CN202040265U (en) | 2011-04-28 | 2011-04-28 | Self-feedback control friction damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202040265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261423A (en) * | 2011-04-28 | 2011-11-30 | 济南大学 | Self-feedback control friction damper |
| CN103423366A (en) * | 2012-05-14 | 2013-12-04 | 舍弗勒技术股份两合公司 | Rotary vibration damper |
-
2011
- 2011-04-28 CN CN2011201300645U patent/CN202040265U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261423A (en) * | 2011-04-28 | 2011-11-30 | 济南大学 | Self-feedback control friction damper |
| CN102261423B (en) * | 2011-04-28 | 2012-11-14 | 济南大学 | Self-feedback control friction damper |
| CN103423366A (en) * | 2012-05-14 | 2013-12-04 | 舍弗勒技术股份两合公司 | Rotary vibration damper |
| CN103423366B (en) * | 2012-05-14 | 2017-06-20 | 舍弗勒技术股份两合公司 | Rotary vibration damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111116 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |