CN205226198U - Two pressure springs are flat - entad become friction damper - Google Patents
Two pressure springs are flat - entad become friction damper Download PDFInfo
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- CN205226198U CN205226198U CN201521089505.6U CN201521089505U CN205226198U CN 205226198 U CN205226198 U CN 205226198U CN 201521089505 U CN201521089505 U CN 201521089505U CN 205226198 U CN205226198 U CN 205226198U
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Abstract
The utility model relates to a two pressure springs are flat - entad become friction damper, including two friction plates, two fixed plates, two end plates, locating plate, wedge sliding friction piece, extrusion wedge, intermediate junction axle and two compression spring, two friction plates, two fixed plates, two end plates become a board -like cavity with the location hoarding, and inside being equipped with of cavity becomes rubbing device, it comprises a pair of friction subassembly, a pair of compression spring and intermediate junction axle to become rubbing device, wedge sliding friction piece includes a friction surface and two inclined planes, the extrusion wedge includes two upper and lower inclined planes, and two extrusion wedges that the inclined plane is relative become a friction subassembly with two wedge sliding friction block groups. This attenuator has again damped characteristic, compound damping force covariant shape amplitude linear change, and the deformation speed linear change is followed to viscous damping power, and the frictional interface stable performance, and the price / performance ratio accounts for excellently.
Description
Technical field
The utility model relates to a kind of two flat-centripetal friction-changing damper of stage clip, can be applicable to engineering structure vibration damping and controls, belong to vibration control technology field.
Background technique
The damper that engineering structure vibration damping and vibration isolation field adopt can be divided into velocity correlation type and the large class of displacement relationship type two at present substantially, and displacement relationship type damper mainly comprises the various metal damper utilizing Plastic Deformation of Metal Materials to consume energy and all kinds of frcition dampers utilizing scraping mechanism to consume energy; Velocity-dependent damper mainly comprises at present and utilizes the viscous damper that viscous fluids produces damping force dissipation energy by damping hole and the viscoelastic damper utilizing viscoelastic material plasticity ability to consume energy.Most of displacement relationship type damper has the clear and definite damping force threshold value starting to consume energy, when damper is stressed be less than this threshold value time, damper provides elastic stiffness, not produce power consumption, when it is stressed exceed this threshold value after, damper enters yield situation or friction slip state, starts dissipation energy, but its damping force is usually very little or no longer increase with the growth of distortion.From this angle, displacement relationship type needs to set the texturizing condition that it plays power consumption effect usually, when distortion is less than setting value, damper does not play power consumption effect, and when distortion is much larger than setting value, due to less to the growth of damping force, the increase with distortion reduces by its additional equivalent damping ratio, only can provide the additional damping ratio of expection near setting distortion amplitude.Viscous damper then can provide different damping forces and energy ezpenditure with velocity variations, speed is higher, damping force is larger, consumed energy is more, presence bit does not move relationship type Threshold, and thus in the vibration damping of engineering structure controls, the use of viscous damper will more than displacement relationship type.But the machining accuracy of viscous damper and seal request will far away higher than displacement relationship types, and this causes its cost also will far away higher than general displacement relationship type, and comprehensively its cost performance is not as the latter.But at some in particular cases, viscous damper has the advantage that some displacement relationship types do not possess, can not substitute with displacement type damper under normal circumstances.Such as TMD vibration damping structure system, there is optimum value in the damping ratio not obtaining optimum damping effect TMD substructure, and its amplitude is usually uncertain, displacement relationship type is adopted to be obviously not all right: if select a too high damping force threshold value, TMD can be caused can not to start in good time and lose frequency adjusting damping effect; Select a too small sliding power threshold value, there will be again the not enough defect of energy dissipation capacity, cause TMD control effects under large amplitude effect not good.Thus, in current TMD vibration damping engineer applied, be all adopt viscous damper to provide damping force in most cases.In addition, conventional friction damper needs pre-add to rub direct stress, and frictional interface can change being in the frictional behaviour under high-stress state for a long time.
Model utility content
The utility model, in order to solve the above-mentioned defect of existing damper, proposes a kind of two flat-centripetal friction-changing damper of stage clip, solves the problem of damper complex damping feature and frictional interface stability.
To achieve these goals, the utility model takes following technological scheme:
A kind of two flat-centripetal friction-changing damper of stage clip, described damper comprises two pieces of friction plates, two pieces of fixed plates, two end plates, positioning plate, wedge shape sliding friction block, extruding wedge-shaped blocks, intermediate connecting shaft and two Compress Springs; Wherein two pieces of friction plates, two pieces of fixed plates, two end plates and positioning plates surround a board-like cavity, and inside cavity is provided with change rubbing device, and described change rubbing device is made up of a pair friction component, a pair Compress Spring and intermediate connecting shaft; Described wedge shape sliding friction block comprises a rubbing surface and two inclined-planes, described extruding wedge-shaped blocks comprises upper and lower two inclined-planes, the extruding wedge-shaped blocks that two inclined-planes are relative and two wedge shape sliding friction blocks form a friction component, in described friction component, the rubbing surface of two wedge shape sliding friction blocks contacts with the rubbing surface of two friction plates respectively, and in friction component, two inclined-planes of wedge shape sliding friction block extrude the contact of incline plane of wedge-shaped blocks with two respectively; Wherein all have circular hole in the middle part of positioning plate, Compress Spring, extruding wedge-shaped blocks and right side end plate, rectangular recess is had along intermediate connecting shaft movement direction in the middle part of upper and lower fixing plate, intermediate connecting shaft passes hole and is positioned at the middle part of cavity, there is rectangular preiection slide block the upper and lower end of baffle plate in the middle part of intermediate connecting shaft, rectangular preiection slide block is equipped with in described rectangular recess, when intermediate connecting shaft moves back and forth, the rectangular recess of upper and lower fixing plate can limit middle connecting plate and can only horizontally slip along rectangular recess direction; Described cavity is divided into left and right two-part by the baffle plate in the middle part of intermediate connecting shaft, a Compress Spring and friction component is respectively had to lay respectively at the left and right both sides of baffle plate, the Compress Spring on the left side is between positioning plate and baffle plate are with left friction component, the Compress Spring on the right is at baffle plate with between right friction component and right side end plate, and two Compress Springs and two friction components are all enclosed within intermediate connecting shaft; Described friction plate is L-type, and friction plate left end is fixedly clamped by described positioning plate and left side end plate, and leaves certain interval between positioning plate and left side end plate, so that intermediate connecting shaft has enough mobile spaces relative to during friction plate to-and-fro motion.
Further, two pieces of fixed plates, two end plates are connected to the side of two pieces of friction plates respectively with bolt, for the position of fixed friction plate.
Further, described positioning plate is also fixed by bolts to friction plate left end.
Further, the Compress Spring and the friction component that are positioned at cavity two ends are at least a pair.
Further, the size of described wedge shape sliding friction block and measure-alike.
Further, described cavity is connected and fixed by high-strength caging bolt, when ensureing its work, the relative changing of the relative positions does not occur.
Further, the distance between described positioning plate and left side end plate, is greater than the maximum distance that intermediate connecting shaft is moved to the left, not interrupted to ensure intermediate connecting shaft motion to the left, meets design requirement.
Further, the rubbing surface of described inside cavity wedge shape sliding friction block flushes with the surface of friction plate.
The utility model achieves following beneficial effect:
Propose a kind of two flat-centripetal friction-changing damper of stage clip herein.This damper is when distortion increases from initial position (loading procedure), the damping force linearly increased with displacement amplitude is provided, when it is replied from amplitude position to initial position (uninstall process), there is provided the damping force linearly reduced with displacement amplitude, and loading procedure damping force corresponding to identical deformation position is greater than uninstall process damping force.Because loading procedure and uninstall process are all linear, the power-deformation curve of the two correspondence enclose area (being the energy of dissipation) and also linearly increase along with the increase of amplitude; When structure keeps elasticity, this damper is added to the equivalent damping ratio of structure not by the impact of distortion amplitude, has the feature of complex damping.Complex damping power is with distortion amplitude linear change, and viscous damping force is with the change of distortion speed linearity, and under most engineer applied condition, comprise in TMD vibration damping structure system, two kinds of dampings have close effectiveness in vibration suppression.And the cost of this patent is far below viscous damper, cost performance is dominant.Meanwhile, although damper in this paper is also provide power consumption based on scraping mechanism, when original state, frictional interface contact stress is zero, and be conducive to the stability ensureing frictional interface, this is also an important advantage.
Accompanying drawing explanation
Fig. 1 is two stage clips flat-centripetal friction-changing damper structure organigram that the utility model proposes;
Fig. 2 is the utility model damper structure A-A sectional drawing;
Fig. 3 is the utility model damper structure three-dimensional stereo effect figure;
Fig. 4 is wedge shape sliding friction block structure schematic diagram;
Fig. 5 is the B-B sectional drawing of Fig. 4;
Fig. 6 is wedge shape sliding friction block structure three-dimensional stereo effect figure;
Fig. 7 is extruding wedge-shaped blocks structural representation;
Fig. 8 is the C-C sectional drawing of Fig. 7;
Fig. 9 is extruding wedge-shaped blocks three-dimensional stereo effect figure;
Figure 10 is intermediate connecting shaft structural representation;
Figure 11 is the D-D sectional drawing of Figure 10;
Figure 12 is intermediate connecting shaft three-dimensional stereo effect figure;
Figure 13 is fixed plate three-dimensional stereo effect figure;
Figure 14 is friction plate three-dimensional stereo effect figure;
In figure: 1: friction plate, 2: top tie plate, 3: lower tie plate, 4: left side end plate, 5: right side end plate, 6: intermediate connecting shaft, 7: positioning plate, 8,9: wedge shape sliding friction block, 10,11,12,13: extruding wedge-shaped blocks, 14,15: Compress Spring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As represented in figures 1 through 14, two flat-centripetal friction-changing damper of stage clip of one of the present utility model, as shown in Figure 1-2, comprise friction plate 1, top tie plate 2, lower tie plate 3, left side end plate 4, right side end plate 5, intermediate connecting shaft 6, positioning plate 7, wedge shape sliding friction block 8,9, extruding wedge-shaped blocks 10,11,12,13 and Compress Spring 14,15.Wherein two pieces of friction plates, 1, two pieces of fixed plates 2,3, two end plates 4,5 and positioning plate 7 surround a board-like cavity, inside cavity is provided with change rubbing device, becomes rubbing device and is made up of a pair friction component, a pair Compress Spring 14,15 and intermediate connecting shaft 6.As shown in Figure 3.Wherein intermediate connecting shaft 6 baffle plate is made up of two wedge shape sliding friction blocks 8 and two extruding wedge-shaped blockss 10,11 with left friction component; Intermediate connecting shaft 6 baffle plate is made up of two wedge shape sliding friction blocks 9 and two extruding wedge-shaped blockss 12,13 with right friction component, as shown in figures 4-9.Wedge shape sliding friction block 8,9 comprises a rubbing surface and two inclined-planes, extruding wedge-shaped blocks 10,11,12,13 comprises upper and lower two inclined-planes, in friction component, the rubbing surface of two wedge shape sliding friction blocks 8,9 contacts with the rubbing surface of upper and lower two friction plates 1 respectively, in friction component two inclined-planes of wedge shape sliding friction block 8,9 respectively with extruding wedge-shaped blocks 10,11,12,13 two contact of incline plane.Wherein positioning plate 7, Compress Spring 14,15, all have circular hole in the middle part of extruding wedge-shaped blocks 10,11,12,13 and right side end plate 5, rectangular recess is had along intermediate connecting shaft 6 movement direction in the middle part of upper bottom plate 2,3, as shown in figure 13, intermediate connecting shaft 6 passes hole and is positioned at the middle part of cavity, baffle plate upper and lower end parts in the middle part of intermediate connecting shaft 6 has rectangular preiection, when intermediate connecting shaft 6 moves back and forth, the rectangular recess of upper bottom plate 2,3 can limit middle connecting plate 6 and can only horizontally slip along groove direction level
In addition, the upper and lower surface of the friction component of described inside cavity will flush with the upper and lower surface of two pieces of friction plates 1, the stability of such guarantee Hysteresis Behavior.In order to make this damper have higher stiffness and bearing capacity, described Compress Spring 14,15 adopts high-performance evanohm spring steel to make, and miscellaneous part adopts Q345 low-alloy structural steel to make.Further, described wedge shape sliding friction block 8,9 should be identical with size with the size of extruding wedge-shaped blocks 10,11,12,13, processing precise, contacts with each other and want good.During described intermediate connecting shaft 6 to-and-fro motion, this body length will meet certain requirements, and its moving range is wanted to meet Practical Project requirement.Further, described board-like cavity is connected and fixed by high-strength caging bolt, when ensureing its work, the relative changing of the relative positions does not occur.Further, the distance between positioning plate 7 and left side end plate 4, is greater than the maximum distance that intermediate connecting shaft is moved to the left.Not interrupted to ensure intermediate connecting shaft motion to the left, meet design requirement.
Cavity is divided into left and right two-part by the baffle plate in the middle part of intermediate connecting shaft 6, a Compress Spring 14,15 and friction component is respectively had to lay respectively at baffle plate the right and left, the Compress Spring 14 on the left side is between positioning plate 7 and baffle plate are with left friction component, the Compress Spring 15 on the right is at baffle plate with between right friction component and right side end plate 5, and two Compress Springs, 14,15 and two friction components are all enclosed within intermediate connecting shaft 6.Described be positioned at cavity two ends Compress Spring and friction component be at least a pair, the damping force that the tonnage that can realize according to actual needs exerting oneself is larger and different.Two pieces of fixed plates 2,3, two end plates 4,5 is connected on the side of two pieces of friction plates 1 with bolt, for fixing its position respectively.Positioning plate 7 is also fixed by bolts to two pieces of friction plate 1 left ends, certain interval is left between positioning plate 7 and left side end plate 4, so that intermediate connecting shaft 6 has enough mobile spaces relative to during friction plate 1 to-and-fro motion, when damper is installed in structure, be connected on left side end plate and intermediate connecting shaft.
During original state, without precompression (namely contact stress is zero) between described wedge shape sliding friction block 8,9 and friction plate 1, therefore the loading of damper has not needed sliding power, and this is conducive to the stable performance ensureing frictional interface.Intermediate connecting shaft 6 is positioned in the middle part of board-like cavity and left end is concordant with positioning plate 7 left side, and two Compress Springs, 14,15 and two friction components are all in the state of not stressing.When intermediate connecting shaft 6 from initial position move right load time, intermediate connecting shaft 7 can drive its baffle plate to extrude the inclined-plane of the two pieces of wedge shape sliding friction blocks 9 contacted with it with right extruding wedge-shaped blocks 12, and the extruding wedge-shaped blocks 13 that the another one inclined-plane of this wedge shape sliding friction block 9 and another one in this friction component are connected with Compress Spring 15 contacts, the athletic meeting of intermediate connecting shaft 6 causes the compressive strain of Compress Spring 15, Compress Spring 15 is out of shape the pressure of rear generation can by two relative extruding wedge-shaped blockss 12 in this friction component, the squeezing action of 13 pairs of wedge shape sliding friction blocks 9 is delivered on the surface of contact between wedge shape sliding friction block 9 and friction plate 1, Compress Spring 15 decrement is larger, frictional force between wedge shape sliding friction block 9 and friction plate 1 is larger, the damping force of damper equals spring-compressed counter-force and frictional force sum between wedge shape sliding friction block 9 and friction plate 1, when intermediate connecting shaft 6 is loaded into displacement amplitude place to the right and starts that oppositely unloading is got back in the process of initial position, Compress Spring 15 decrement diminishes gradually, the frictional force be delivered between wedge shape sliding friction block 9 and friction plate 1 is also more and more less, and the damping force of damper equals spring-compressed counter-force and the difference of frictional force between wedge shape sliding friction block 9 and friction plate 1.And frictional force and amount of spring compression linear, in the process of this loading and unloading, only have intermediate connecting shaft baffle plate to work with the friction component of right half and Compress Spring 15, baffle plate is in the friction component on a left side and Compress Spring plate 14 state of not stressing; In like manner when intermediate connecting shaft 6 carries out loading and unloading at initial position with a left side, intermediate connecting shaft baffle plate is only had to work with the friction component of left half and Compress Spring 14, baffle plate is in the friction component of right half and Compress Spring 15 state of not stressing, and identical with the tribology principle of intermediate connecting shaft 6 when initial position carries out loading and unloading with right half.Usually the compression counter-force being set to Compress Spring 14,15 is greater than frictional force, and when can make like this to unload, damper can get back to initial position voluntarily.Due to during loading and unloading form damping force two-part power all with the sexual intercourse of Compress Spring decrement retention wire, therefore, be two diagonal triangles being positioned at one, three quadrants in the shape of the hysteresis loop of reciprocating load bottombearing damper, there is complex damping feature.
embodiment 1
Flat-centripetal friction-changing damper of two stage clips of the present embodiment, in order to improve bearing capacity and the deformability of damper, extend the working life of Compress Spring, Compress Spring used is the die springs adopting high-performance evanohm spring steel to make, height 50mm, external diameter 30mm, internal diameter 15(16) mm, rigidity is 35(100) N/mm, friction component length is 36mm, width is 59mm, and in actual tests, two groups of Compress Springs and friction component circulate successively and work, and improve its anti-fatigue ability.Board-like cavity, end plate, intermediate connecting shaft, extruding wedge-shaped blocks and wedge shape sliding friction block all adopt high performance steel to make, rubbing surface has carried out special processing, to ensure that the friction factor between wedge shape sliding friction block and friction plate inwall reaches certain numerical value, meet design requirement.Wedge-shaped blocks bevel angle adopts π/4.Cavity total length 237mm, adds intermediate connecting shaft right-hand member connecting plate overall length 277mm, width 79mm.This damper can provide the hysteresis loop with " triangle " linear Complex modes feature, and stable performance, there is not sliding power problem.
Study to obtain hysteresis loop by testing apparatus to this damper, under the load action that repeatedly moves in circles, its hysteresis loop wire is approximately two diagonal triangles of one, three quadrants.In test, Compress Spring is the die springs that rigidity is different, and 1 ﹟ Compress Spring rigidity is 35N/mm; 2 ﹟ Compress Spring rigidity are 100N/mm.Adopt 1 ﹟ Compress Spring damping force when displacement is 23mm to reach about 800N, and adopt 2 ﹟ Compress Springs damping force when displacement is 19mm can reach about 2000N, visible increase Compress Spring rigidity can improve damper and exert oneself.This damper can provide the hysteresis loop with " triangle " linear Complex modes feature, and stable performance, there is not sliding power problem.
Above-described embodiment is just in order to enumerating of more clearly demonstrating that the technical solution of the utility model makes, and not to restriction of the present utility model, the scope that protection domain of the present utility model still limits with claims is as the criterion.
Claims (8)
1. two flat-centripetal friction-changing damper of stage clip, is characterized in that: described damper comprises two pieces of friction plates, two pieces of fixed plates, two end plates, positioning plate, wedge shape sliding friction block, extruding wedge-shaped blocks, intermediate connecting shaft and two Compress Springs; Wherein two pieces of friction plates, two pieces of fixed plates, two end plates and positioning plates surround a board-like cavity, and inside cavity is provided with change rubbing device, and described change rubbing device is made up of a pair friction component, a pair Compress Spring and intermediate connecting shaft; Described wedge shape sliding friction block comprises a rubbing surface and two inclined-planes, described extruding wedge-shaped blocks comprises upper and lower two inclined-planes, the extruding wedge-shaped blocks that two inclined-planes are relative and two wedge shape sliding friction blocks form a friction component, in described friction component, the rubbing surface of two wedge shape sliding friction blocks contacts with the rubbing surface of two friction plates respectively, and in friction component, two inclined-planes of wedge shape sliding friction block extrude the contact of incline plane of wedge-shaped blocks with two respectively; Wherein all have circular hole in the middle part of positioning plate, Compress Spring, extruding wedge-shaped blocks and right side end plate, rectangular recess is had along intermediate connecting shaft movement direction in the middle part of upper and lower fixing plate, intermediate connecting shaft passes hole and is positioned at the middle part of cavity, there is rectangular preiection slide block the upper and lower end of baffle plate in the middle part of intermediate connecting shaft, and rectangular preiection slide block is equipped with in described rectangular recess; Described cavity is divided into left and right two-part by the baffle plate in the middle part of intermediate connecting shaft, a Compress Spring and friction component is respectively had to lay respectively at the left and right both sides of baffle plate, the Compress Spring on the left side is between positioning plate and baffle plate are with left friction component, the Compress Spring on the right is at baffle plate with between right friction component and right side end plate, and two Compress Springs and two friction components are all enclosed within intermediate connecting shaft; Described friction plate is L-type, and friction plate left end is fixedly clamped by described positioning plate and left side end plate, and leaves gap between positioning plate and left side end plate.
2. two flat-centripetal friction-changing damper of stage clip of one according to claim 1, is characterized in that: two pieces of fixed plates, two end plates are connected to the side of two pieces of friction plates respectively with bolt, for the position of fixed friction plate.
3. two flat-centripetal friction-changing damper of stage clip of one according to claim 2, is characterized in that: described positioning plate is also fixed by bolts to friction plate left end.
4. two flat-centripetal friction-changing damper of stage clip of one according to claim 1, is characterized in that: the Compress Spring and the friction component that are positioned at cavity two ends are at least a pair.
5. two flat-centripetal friction-changing damper of stage clip of one according to claim 1, is characterized in that: the size of described wedge shape sliding friction block and measure-alike.
6. two flat-centripetal friction-changing damper of stage clip of one according to claim 1, is characterized in that: described cavity is connected and fixed by high-strength caging bolt.
7. two flat-centripetal friction-changing damper of stage clip of one according to claim 1, is characterized in that: the distance between described positioning plate and left side end plate, is greater than the maximum distance that intermediate connecting shaft is moved to the left.
8. two flat-centripetal friction-changing damper of stage clip of one according to claim 1, is characterized in that: the rubbing surface of described inside cavity wedge shape sliding friction block flushes with the surface of friction plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089505.6U CN205226198U (en) | 2015-12-24 | 2015-12-24 | Two pressure springs are flat - entad become friction damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089505.6U CN205226198U (en) | 2015-12-24 | 2015-12-24 | Two pressure springs are flat - entad become friction damper |
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| CN205226198U true CN205226198U (en) | 2016-05-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387115A (en) * | 2015-12-24 | 2016-03-09 | 北京工业大学 | Dual-compressed-spring flat plate type-centripetal variable friction damper |
| CN108443386A (en) * | 2018-03-05 | 2018-08-24 | 深圳市齐创美科技有限公司 | A kind of frictional damper based on frictional force control |
| CN108458033A (en) * | 2018-03-05 | 2018-08-28 | 深圳市齐创美科技有限公司 | A kind of frictional damping shock absorber based on frictional force control |
| CN108591342A (en) * | 2018-07-04 | 2018-09-28 | 阮忠诚 | A method of improving new-energy automobile comfort level |
| CN108825704A (en) * | 2018-07-04 | 2018-11-16 | 阮忠诚 | A kind of new-energy automobile damper |
-
2015
- 2015-12-24 CN CN201521089505.6U patent/CN205226198U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387115A (en) * | 2015-12-24 | 2016-03-09 | 北京工业大学 | Dual-compressed-spring flat plate type-centripetal variable friction damper |
| CN108443386A (en) * | 2018-03-05 | 2018-08-24 | 深圳市齐创美科技有限公司 | A kind of frictional damper based on frictional force control |
| CN108458033A (en) * | 2018-03-05 | 2018-08-28 | 深圳市齐创美科技有限公司 | A kind of frictional damping shock absorber based on frictional force control |
| CN108591342A (en) * | 2018-07-04 | 2018-09-28 | 阮忠诚 | A method of improving new-energy automobile comfort level |
| CN108825704A (en) * | 2018-07-04 | 2018-11-16 | 阮忠诚 | A kind of new-energy automobile damper |
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