CN203730645U - Novel friction damper - Google Patents
Novel friction damper Download PDFInfo
- Publication number
- CN203730645U CN203730645U CN201420118518.0U CN201420118518U CN203730645U CN 203730645 U CN203730645 U CN 203730645U CN 201420118518 U CN201420118518 U CN 201420118518U CN 203730645 U CN203730645 U CN 203730645U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- cover plate
- spiral
- overhead gage
- rubber body
- 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.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses a novel friction damper, and relates to a damper. The upper end and the lower end of a cylindrical cylinder block are respectively fixedly provided with an upper cover plate and a lower cover plate fixedly connected with the foundation; a piston rod connected with a vibration source passes through the upper cover plate to be in sliding connection with the upper cover plate. The novel friction damper is characterized in that the piston rod is fixedly provided with vertical nuts; the piston rod between the two nuts is successively sheathed with an upper baffle, a rubber body and a lower baffle from top to bottom; the round upper baffle and the round lower baffle are in contact cooperation with the inner wall of the cylinder block; a helical spiral friction plate in contact cooperation with the inner wall of the cylinder block is sheathed on the periphery of the cylindrical rubber body; the cylinder block is divided into two chambers by the rubber body; a damping element is respectively arranged in each of the two chambers. According to the novel friction damper, one part of energy of the vibration source is adsorbed by viscous damping, and the vibration attenuation efficiency is improved; after the vibration source is eliminated, the spiral friction plate gets back into shape, and the service life of the spiral friction plate is prolonged.
Description
Technical field
The utility model relates to damper technique field, specifically a kind ofly can produce according to external load size the frcition damper of corresponding large less friction.
Background technique
Vibration extensively exists in a plurality of fields, in field of machining, because vibration makes the element precision processing, reduces; At building field, because can making building, natural disaster destroyed.Vibration also can bring noise, and that gives people healthyly brings harm.Vibration has become the key factor of restriction a plurality of fields development, but in a lot of situation, oscillation phenomenon is again inevitable.Therefore, take rational measure to reduce to vibrate most important.Frcition damper has a wide range of applications aspect vibration reducing, existing frcition damper working principle mainly: by producing the object that friction realizes vibration damping between friction piece and cylinder body.The serious wear of friction piece under this mode, causes the frcition damper life-span to reduce, and the effectiveness in vibration suppression of damper obviously declines.Therefore, taking rational friction piece structure to improve the effectiveness in vibration suppression of frcition damper, extend the working life of frcition damper, is very necessary.
Model utility content
The purpose of this utility model is to provide a kind of Novel friction damping device, for solving the problem that existing frcition damper damping efficiency is low, working life is short.
The technical scheme in the invention for solving the technical problem is: a kind of Novel friction damping device, comprise cylinder body, upper cover plate, lower cover plate and piston rod, at the two ends up and down of columnar described cylinder body, fixedly mount respectively a upper cover plate and the lower cover plate being fixedly connected with ground, one piston rod being connected with vibration source passes upper cover plate and is slidably connected with upper cover plate, it is characterized in that, on described piston rod, fixedly mount two nuts setting up and down, on the piston rod between nut described in two, be equipped with successively an overhead gage from top to bottom, rubber body and lower pedal, circular described overhead gage contacts cooperation with lower pedal with the inwall of cylinder body, in the outer race of columniform described rubber body, be equipped with one and contact the spiral spiral friction plate coordinating with inboard wall of cylinder block,
Described cylinder body has been divided into two chambers by rubber body, is respectively equipped with damping piece in chamber described in two.
Further, described damping piece is to be filled in the high-pressure air in chamber described in two.
Further, described damping piece is respectively the first spring and the second spring on the piston rod of empty set in two chambers, the two ends of described the first spring are fixedly connected with overhead gage with upper cover plate respectively, and the two ends of described the second spring are fixedly connected with lower pedal with lower cover plate respectively.
Further, described damping piece is to be filled in the fluid in chamber described in two.
Further, on the outer wall of piston rod, be provided with spiral spiral chute, on described overhead gage and lower pedal, be respectively equipped with the runner that is communicated with spiral chute and two chambers, be filled in fluid in lower chamber and enter and in spiral chute, produce viscous resistance through runner.
Further, described overhead gage and lower pedal structure, shape is identical and be symmetrical arranged about the symmetry plane of rubber body.
Further, be respectively equipped with the first groove and second groove of a circle at the upper-end surface of described overhead gage and the center of lower end surface, described overhead gage is slidably matched by the first groove and piston rod; At some tapped holes of the quantity such as the surrounding edge of described the first groove is circumferentially evenly provided with and the fluid passage of needle-like, described in each, fluid passage runs through the both ends of the surface of overhead gage after being communicated with corresponding tapped hole, and described the second groove, tapped hole and fluid passage have formed fluid and entered spiral fluted runner by chamber.
Further, at described inboard wall of cylinder block, scribble wearing layer, described spiral friction plate is made by high-abrasive material.
The beneficial effects of the utility model are: the Novel friction resistance gauge that the utility model provides, is converted into vibration source the frictional force of spiral friction plate and cylinder body, and offsets the active force of vibration source to piston rod by frictional force, to reduce vibrations to the active force of piston rod.And by fluid, the viscous damping in spiral chute absorbs vibration source part energy, has improved damping efficiency; When vibration source is eliminated, spiral friction plate restores to the original state, the working life of having improved spiral friction plate.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment one schematic diagram;
Fig. 2 is A-A sectional view in Fig. 1;
Fig. 3 is the schematic diagram of spiral friction plate;
Fig. 4 is the operating mode schematic diagram before and after rubber body and the distortion of spiral friction plate;
Fig. 5 is the utility model embodiment two schematic diagram;
Fig. 6 is the utility model embodiment three schematic diagram;
Fig. 7 is embodiment three piston rod schematic diagram;
Fig. 8 is embodiment three overhead gage sectional view;
Fig. 9 is embodiment three overhead gage schematic three dimensional views;
In figure: 1 upper cover plate, 2 nuts, 3 overhead gages, 31 first grooves, 32 second grooves, 33 fluid passages, 34 tapped holes, 4 rubber body, 5 spiral friction plates, 6 lower pedals, 7 piston rods, 71 spiral chutes, 8 cylinder bodies, 9 lower cover plates, 10 first springs, 11 second springs.
Embodiment
As shown in Figure 1 to Figure 3, the utility model embodiment one comprises upper cover plate 1, nut 2, overhead gage 3, rubber body 4, spiral friction plate 5, lower pedal 6, piston rod 7, cylinder body 8 and lower cover plate 9.Below in conjunction with accompanying drawing, embodiment one is described.
As shown in Figure 1, cylinder body 8 is the vertical columnar metalwork of placing, and at inboard wall of cylinder block, scribbles high-abrasive material, fixedly mounts a upper cover plate 1 at the top of cylinder body, and upper cover plate 1 is circular metalwork, at the center of upper cover plate, is provided with a circular hole.In the bottom of cylinder body, fixedly mount a lower cover plate 9, lower cover plate is circular metalwork, and lower cover plate is realized the sealing to cylinder body from bottom.The piston rod of one circle slides and is nested with in the circular hole of upper cover plate, and the lower end of piston rod extend in the inner chamber of cylinder body.In the lower end of piston rod, be equipped with a lower pedal 6, lower pedal is circular sheet metal, is fixed with a nut on the piston rod below lower pedal, and this nut coordinates the axial limiting of realizing lower pedal with piston rod thread.The center of lower pedal is provided with the circular hole being slidably matched with piston rod, above lower pedal, be provided with a rubber body 4, rubber body is on center line, to establish round-meshed cylindrical cylinders, rubber body is nested with on piston rod, the external diameter of rubber body is less than the internal diameter of cylinder body, as shown in Figure 2, outer race in rubber body is equipped with a spiral friction plate 5, as shown in Figure 3, the spiral metalwork of spiral friction plate for being made by high-abrasive material, the external cylindrical surface of spiral friction plate contacts cooperation with the inwall of cylinder body, and the height of spiral friction plate is identical with the height of rubber body.At the top of rubber body, be provided with an overhead gage 3, overhead gage is circular metalwork, and overhead gage and lower pedal structure, shape are identical, and the bottom of overhead gage contacts cooperation with the top of rubber body.At the center of overhead gage, be provided with a circular hole, overhead gage is nested with on piston rod by this circular hole, and the nut 2 that is threaded on the piston rod above overhead gage is realized the axial limiting to overhead gage by this nut.The lower pedal, rubber body, spiral friction plate and the overhead gage that arrange like this, are in turn limited on the piston rod between two nuts.Cylinder body is divided into two chambers, in two chambers, is full of respectively high-pressure air.
During installation, frcition damper is fixedly connected with ground or fitting seat by lower cover plate, and the upper end by piston rod is connected with vibration source.When having effect of vibration in piston rod, piston rod is subject to the effect of axial force and moves down, and the high-pressure air in inferior part of the cylinder block chamber is compressed, and pressure increases, and acts on lower pedal and forces lower pedal to move up; Overhead gage and lower pedal are mutually close, and rubber body is compressed, and the radial dimension of rubber body becomes large and forces spiral friction plate radial dimension to become large, as shown in Figure 4 (in figure, dotted line is the operating mode after distortion); Between the outer wall of spiral friction plate and the inwall of cylinder body, produce positive pressure and produce the frictional force along cylinder body axial direction.Displacement by piston rod by vibration source force transmission to spiral friction plate and cylinder body, to play the effect of vibration damping.When the amplitude of vibration source is different, the displacement of piston rod is different, and spiral friction plate is also different from the frictional force between cylinder body.When vibration source no longer vibrates, spiral friction plate and rubber body all restore to the original state.
As shown in Figure 5, be the utility model embodiment two schematic diagram, embodiment two is only with embodiment one difference, is respectively equipped with one first spring 10 and the second spring 11, to replace high-pressure air in two chambers of cylinder body.Be specially: the first spring empty set is in the outside of piston rod, and first one end of spring 10 and the upper end of overhead gage are fixedly connected with, and first the other end of spring 10 and the lower end of upper cover plate are fixedly connected with.One end of the second spring is fixedly connected with the lower end of lower pedal, and the other end of the second spring is fixedly connected with the upper end of lower cover plate.When being subject to vibration source, piston rod upper end does the used time, piston rod moves down and acts on the second spring and forces the second spring-compressed, the second spring reaction is in lower pedal and force lower pedal to the side shifting near overhead gage, and then compressing rubber body makes rubber body radial dimension become large, to act on spiral friction plate, and make to produce the frictional force along piston rod axial direction between spiral friction plate and inboard wall of cylinder block, play damping effect.When the elastic force of spring is not enough, can by the periphery at first, second spring, be nested with the form of spring or increase more high-strength spring form, overcome the effect of vibration source, reduce the displacement of piston rod.
As shown in Figure 6, be the utility model embodiment three schematic diagram, it comprises upper cover plate 1, nut 2, overhead gage 3, rubber body 4, spiral friction plate 5, lower pedal 6, piston rod 7, cylinder body 8 and lower cover plate 9.In embodiment three, upper lower pedal is different from the baffle arrangement up and down in embodiment one, and piston rod is different from the piston rod construction in embodiment one, in cylinder body two chambers, fills fluid.Below in conjunction with accompanying drawing, embodiment three is described in detail, as shown in Figure 7, piston rod is circular metallic rod, is provided with a spiral spiral chute 71 on the external cylindrical surface of piston rod.As shown in Figure 8, Figure 9, at the center of overhead gage one end, be provided with the second groove 32 of a circle, at the center of the overhead gage the other end, be provided with the first groove 31 of a circle, and the first groove is connected with the second groove and forms a step hole.The radial dimension of the first groove is less than the radial dimension of the second groove, and the degree of depth of depth ratio second groove of the first groove is large, and overhead gage is slidably connected by the first groove and piston rod.In the surrounding of the first groove, be provided with the tapped hole 34 of some circumferential arrangement, tapped hole is blind hole, is provided with a fluid passage 33 on the axis of each tapped hole, and fluid passage is longilineal circular hole, and the two ends of fluid passage are communicated with the second groove and tapped hole respectively.Like this, tapped hole, fluid passage and the second groove are interconnected.Lower pedal is identical with structure, the shape of overhead gage, during installation, overhead gage contacts cooperation with the top and bottom of rubber body respectively with one end that lower pedal is provided with the second groove, tapped hole on overhead gage and lower pedal is connected with two chambers of cylinder body respectively, in two chambers of cylinder body, fills respectively fluid.Two chambers of cylinder body are connected with the spiral chute on piston rod by the tapped hole on two baffle plates, fluid passage, the second groove.When vibration source acts on piston rod, piston rod moves down, make that fluid in inferior part of the cylinder block chamber is compressed and pressure increases, fluid reacts on lower pedal forces lower pedal to overhead gage one side shifting, and then make that rubber body is compressed, radial dimension increases, the increase of rubber body radial dimension acts on spiral friction plate spiral friction plate radial dimension is increased, and between spiral friction plate and inboard wall of cylinder block, produces positive pressure; Under the effect of positive pressure, between spiral friction plate and inboard wall of cylinder block, produce along piston rod to frictional force, and the action direction of this frictional force and the opposite direction of vibration source to the active force of piston rod, and then realize the object of vibration damping.Meanwhile, the fluid of inferior part of the cylinder block chamber enters in the spiral chute of piston rod by tapped hole, fluid passage and second groove of lower pedal, produces viscous resistance to absorb a part of vibration source energy; Meanwhile, fluid enters flow channel for liquids can produce higher pressure, and the high-voltage oil liquid in runner acts on rubber body, rubber body radial dimension is increased, to increase the positive pressure between spiral friction plate and inboard wall of cylinder block; Fluid enters in upper chamber through the second groove, fluid passage and the tapped hole of overhead gage.The most of energy of vibration source is absorbed by the frictional force between spiral friction plate and cylinder body, and small part energy is absorbed by viscous damping.According to the abrasion condition of spiral friction plate, optionally, by sealing bolt occluding member tapped hole, carry out the indoor pressure of control chamber, thereby guarantee that rubber body is subject to enough large pressure, finally guarantees the damping force between spiral friction plate and cylinder body.
Claims (8)
1. a Novel friction damping device, comprise cylinder body, upper cover plate, lower cover plate and piston rod, at the two ends up and down of columnar described cylinder body, fixedly mount respectively a upper cover plate and the lower cover plate being fixedly connected with ground, one piston rod being connected with vibration source passes upper cover plate and is slidably connected with upper cover plate, it is characterized in that, on described piston rod, fixedly mount two nuts setting up and down, on the piston rod between nut described in two, be equipped with successively an overhead gage from top to bottom, rubber body and lower pedal, circular described overhead gage contacts cooperation with lower pedal with the inwall of cylinder body, in the outer race of columniform described rubber body, be equipped with one and contact the spiral spiral friction plate coordinating with inboard wall of cylinder block,
Described cylinder body has been divided into two chambers by rubber body, is respectively equipped with damping piece in chamber described in two.
2. a kind of Novel friction damping device according to claim 1, is characterized in that, described damping piece is to be filled in the high-pressure air in chamber described in two.
3. a kind of Novel friction damping device according to claim 1, it is characterized in that, described damping piece is respectively the first spring and the second spring on the piston rod of empty set in two chambers, the two ends of described the first spring are fixedly connected with overhead gage with upper cover plate respectively, and the two ends of described the second spring are fixedly connected with lower pedal with lower cover plate respectively.
4. a kind of Novel friction damping device according to claim 1, is characterized in that, described damping piece is to be filled in the fluid in chamber described in two.
5. a kind of Novel friction damping device according to claim 4, it is characterized in that, on the outer wall of piston rod, be provided with spiral spiral chute, on described overhead gage and lower pedal, be respectively equipped with the runner that is communicated with spiral chute and two chambers, be filled in fluid in lower chamber and enter and in spiral chute, produce viscous resistance through runner.
6. a kind of Novel friction damping device according to claim 5, is characterized in that, described overhead gage and lower pedal structure, shape is identical and be symmetrical arranged about the symmetry plane of rubber body.
7. a kind of Novel friction damping device according to claim 6, is characterized in that, is respectively equipped with the first groove and second groove of a circle at the upper-end surface of described overhead gage and the center of lower end surface, and described overhead gage is slidably matched by the first groove and piston rod; At some tapped holes of the quantity such as the surrounding edge of described the first groove is circumferentially evenly provided with and the fluid passage of needle-like, described in each, fluid passage runs through the both ends of the surface of overhead gage after being communicated with corresponding tapped hole, and described the second groove, tapped hole and fluid passage have formed fluid and entered spiral fluted runner by chamber.
8. a kind of Novel friction damping device according to claim 1, is characterized in that, at described inboard wall of cylinder block, scribbles wearing layer, and described spiral friction plate is made by high-abrasive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118518.0U CN203730645U (en) | 2014-03-17 | 2014-03-17 | Novel friction damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420118518.0U CN203730645U (en) | 2014-03-17 | 2014-03-17 | Novel friction damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730645U true CN203730645U (en) | 2014-07-23 |
Family
ID=51200723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420118518.0U Expired - Fee Related CN203730645U (en) | 2014-03-17 | 2014-03-17 | Novel friction damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730645U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821872A (en) * | 2014-03-17 | 2014-05-28 | 济南大学 | Novel friction damper |
| CN107893565A (en) * | 2017-12-18 | 2018-04-10 | 安徽工程大学 | Worm drive formula friction energy-dissipating damper |
| CN108930133A (en) * | 2017-05-24 | 2018-12-04 | 青岛海尔洗衣机有限公司 | Use in washing machine hanger rod component and rotary drum washing machine |
-
2014
- 2014-03-17 CN CN201420118518.0U patent/CN203730645U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821872A (en) * | 2014-03-17 | 2014-05-28 | 济南大学 | Novel friction damper |
| CN108930133A (en) * | 2017-05-24 | 2018-12-04 | 青岛海尔洗衣机有限公司 | Use in washing machine hanger rod component and rotary drum washing machine |
| CN107893565A (en) * | 2017-12-18 | 2018-04-10 | 安徽工程大学 | Worm drive formula friction energy-dissipating damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103821872A (en) | Novel friction damper | |
| CN203892440U (en) | Novel damper | |
| CN207406699U (en) | A kind of mechanical shock absorption means | |
| CN101871502B (en) | Mechanical induction type adjustable damping valve with external oil-gas suspension | |
| CN203730645U (en) | Novel friction damper | |
| CN104214264B (en) | Damping/stiffness-adjustable hydraulic damper of multidimensional vibration damping platform | |
| CN104976272A (en) | Heavy load hydraulic damper | |
| CN203685969U (en) | Novel reinforcement friction damper | |
| CN104074902B (en) | A kind of magnetic fixed type magnetic fluid damper | |
| CN204403250U (en) | A kind of sensing frequency conversion vibration damper | |
| CN201763880U (en) | Viscous damper | |
| CN104500636A (en) | Sensing variable-frequency vibration absorber | |
| CN105526296A (en) | Novel friction damper | |
| CN103032509B (en) | Oil-leakage-prevention double barreled fluid power snubber for car | |
| CN105508496B (en) | Magnetic rheological body shock absorber in parallel | |
| CN203906637U (en) | Hydraulic damper used for bicycle and electric bicycle | |
| CN107575528A (en) | Accurate communication equipment vibration absorber | |
| CN201391511Y (en) | Hydraulic cylinder cushioning device | |
| RU194004U1 (en) | Two-pipe hydropneumatic shock absorber | |
| CN103343797A (en) | Damping device | |
| CN106812860A (en) | A kind of combined type damper | |
| CN203604530U (en) | Shock absorber | |
| CN207315964U (en) | A kind of damper flowing valve | |
| CN206175548U (en) | Double -acting cylinder body bumper shock absorber | |
| JP2016217367A (en) | Fluid damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20170317 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |