CN217557881U - Double-order friction damping device - Google Patents
Double-order friction damping device Download PDFInfo
- Publication number
- CN217557881U CN217557881U CN202221659584.XU CN202221659584U CN217557881U CN 217557881 U CN217557881 U CN 217557881U CN 202221659584 U CN202221659584 U CN 202221659584U CN 217557881 U CN217557881 U CN 217557881U
- Authority
- CN
- China
- Prior art keywords
- friction
- order
- unit
- damping device
- friction unit
- 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.)
- Active
Links
Images
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to the technical field of building shock absorption, in particular to a double-order friction damping device; the friction steel plate of the first-order friction unit and the friction steel plate of the second-order friction unit share the same press plate, a sink groove is formed in the friction steel plate of the first-order friction unit, and stop blocks are additionally arranged on the press plates on two sides to form a limiting device, so that the energy consumption of the second-order friction unit is carried out after the energy consumption of the first-order friction unit is carried out under certain displacement, and the friction coefficient of the friction material of the first-order friction unit is smaller than that of the friction material of the second-order friction unit; the utility model discloses the homoenergetic realizes the friction power consumption under little shake and big shake, and first order frictional force and second order frictional force all can be adjusted, simultaneously, this two-step friction damping device that plays simple structure, and the maintenance is changed conveniently, and the slip stroke is great, has superior power consumption shock-absorbing capacity.
Description
Technical Field
The utility model relates to a building shock attenuation technical field especially relates to a two-step friction damping device.
Background
The traditional structural seismic method dissipates seismic energy by means of elastic-plastic deformation of a main structure, improves the lateral stiffness resistance and the self deformability of the structure by increasing the section size of a beam column of a building structure so as to achieve a seismic grade, but the mode cannot avoid damage to the building structure to a certain degree, the seismic effect is not ideal, the building attractiveness and the use function are influenced, and the manufacturing cost is high.
The friction damping device is a displacement type damping device, and the basic mechanism of the displacement type damping device is a mechanism which can generate sliding friction under the action of a certain pretightening force between a structural component and a friction material, energy is dissipated by a friction acting mode, but most of the existing friction damping devices only can provide fixed friction force for a building structure, when the sliding friction force is large, the friction damping device possibly cannot slide or generate certain residual deformation after sliding, and when the sliding friction force is small, the damping force required by the building structure cannot be met, so that the energy consumption capability of the friction damping device is influenced.
Therefore, in order to satisfy the requirement that the energy consumption capability of the damping device is different under different displacements, namely the damping device can realize friction energy consumption under small earthquake and large earthquake and has the characteristic of double-order slip, the double-order friction damping device is provided, and the problem can be better solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two rank friction damping device, the utility model discloses the homoenergetic realizes the friction power consumption under little shake and big shake, and first order frictional force and second order frictional force all can be adjusted, simultaneously, this two rank plays to slide friction damping device simple structure, and the maintenance is changed conveniently, and the slip stroke is great, has superior power consumption shock-absorbing capacity, is suitable for the engineering and uses.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a two-step friction damping device, includes the first-order friction unit and the second order friction unit of establishing ties each other, first-order friction unit and second order friction unit arrange by clamp plate, friction material and friction steel sheet stromatolite and constitute, first-order friction unit and second order friction unit share same clamp plate, the friction steel sheet of first-order friction unit seted up heavy groove, the clamp plate add the link stopper, heavy groove and link stopper cooperation form stop device, the friction coefficient of the friction material of first-order friction unit be less than the friction coefficient of the friction material of second order friction unit, friction steel sheet plate head seted up the round pin shaft hole, and the friction steel sheet of first-order friction unit is opposite with the relative body of friction steel sheet plate head of second order friction unit, through the round pin axle with damping device and major structure connection.
Furthermore, a first waist-shaped hole is formed in the friction steel plate of the first-order friction unit, a second waist-shaped hole is formed in the friction steel plate of the second-order friction unit, a stop bar is welded on the surface of the pressing plate, a bolt hole is formed in the surface of the pressing plate, and the friction material is placed between the adjacent stop bars.
Furthermore, the stopper is placed in the middle of the sinking groove to form a limiting device, a distance is reserved between the stopper and the sinking groove, the number of the sinking grooves and the number of the stoppers are the same, at least 4 stoppers are arranged, and the thickness of the friction material is higher than that of the stopper strip.
Furthermore, the friction steel plates of the first-order friction unit and the friction steel plates of the second-order friction unit are the same in number and are at least 1 respectively, and the friction materials of the first-order friction unit and the friction materials of the second-order friction unit are the same in number and are at least 4 respectively.
Further, the length of the first waist-shaped hole is larger than that of the second waist-shaped hole, the number of the first waist-shaped hole is equal to that of the second waist-shaped hole, the number of the first waist-shaped hole and the number of the second waist-shaped hole can be 2 or more in the length direction and the width direction, the number of the pressing plates is at least 2, and the number and the arrangement direction of the bolt holes in the pressing plates are consistent with those of the first waist-shaped hole and the second waist-shaped hole.
Furthermore, the friction material is made of semi-metal or non-metal wear-resistant materials, wear-resistant coatings and other materials, and the side face of the friction material is provided with sealant for sealing.
Further, the first-order friction unit comprises a first pressing plate, a first friction material and a first friction steel plate; the second-order friction unit comprises a first pressing plate, a second friction material and a second friction steel plate; a stop block and a stop bar are additionally arranged on one side of the first pressing plate, and sink grooves are formed in the two sides of the first friction steel plate and the two sides of the second friction steel plate; the center of the first friction material and the center of the second friction material are provided with horn-shaped countersunk holes and are fixed on the first pressure plate through cross-shaped countersunk head screws, and the pre-tightening bolts respectively penetrate through bolt holes of the first pressure plate, first waist-shaped holes of the first friction steel plate, bolt holes of the first pressure plate and second waist-shaped holes of the second friction steel plate and are fastened and connected through nuts.
Further, the first-order friction unit comprises a second pressing plate, a third friction material and a third friction steel plate, and the second-order friction unit comprises a second pressing plate, a fourth friction material and a fourth friction steel plate; a stop block and a stop bar are additionally arranged on one side of the second pressing plate, and sink grooves are formed in two sides of the third friction steel plate and the fourth friction steel plate; the surfaces of the friction material III and the friction material IV are provided with bolt holes, and the pre-tightening bolts respectively penetrate through the bolt holes of the pressure plate II and the friction material III, the first kidney-shaped hole of the friction steel plate III, the bolt holes of the pressure plate II and the friction material IV and the second kidney-shaped hole of the friction steel plate IV and are fastened and connected through nuts.
Further, the first-order friction unit comprises a plurality of layers of a first pressing plate or a second pressing plate, a third pressing plate, a first friction steel plate or a third friction steel plate and a first friction material or a third friction material which are connected in parallel, the second-order friction unit comprises a plurality of layers of a first pressing plate or a second pressing plate, a third pressing plate, a second friction steel plate or a fourth friction steel plate and a second friction material or a fourth friction material which are connected in parallel, and the number of layers of the third pressing plate is 1 less than that of the first friction steel plate or the second friction steel plate or the third friction steel plate or the fourth friction steel plate.
Furthermore, a disk spring or a hard spring is arranged between the pre-tightening bolt and the nut.
The utility model discloses a theory of operation: when the damping device is used, the damping device is connected with the main body structure through the pin shaft, the torque values applied by the pre-tightening bolts are the same, the friction coefficient of the friction material of the first-order friction unit is smaller than that of the friction material of the second-order friction unit, so that the first-order friction unit starts to work first, the friction steel plate of the first-order friction unit and the friction material of the first-order friction unit slide relatively to generate first-order friction force, when the friction steel plate slides to the sunken groove to be in contact with the side wall of the stop block, the friction steel plate of the first-order friction unit enters the second-order friction unit, the friction steel plate of the first-order friction unit and the press plates on two sides synchronously move, and the friction steel plate of the second-order friction unit and the friction material of the second-order friction unit slide relatively to generate second-order friction force.
Compared with the prior art, the utility model discloses one of following beneficial effect has at least:
the utility model discloses the homoenergetic realizes the friction power consumption under little shake and big shake, and first order frictional force and second order frictional force are all adjustable, and simultaneously, this two-step friction damping device that plays sliding simple structure, and the maintenance is changed conveniently, and the slip stroke is great, has superior power consumption shock-absorbing capacity.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural view of the friction steel plate 1 of FIG. 1;
FIG. 5 is a schematic structural view of the friction steel plate 2 of FIG. 1;
FIG. 6 is a schematic view of the friction material 1 and friction material 2 of FIG. 1 attached to a pressure plate 1;
fig. 7 is a schematic structural view of embodiment 2 of the present invention;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a cross-sectional view B-B of FIG. 8;
FIG. 10 is a schematic view of the structure of the friction steel plate 3 of FIG. 7;
FIG. 11 is a schematic structural view of the friction steel plate 4 of FIG. 7;
FIG. 12 is a schematic illustration of the friction material 3 and friction material 4 of FIG. 7 attached to the pressure plate 2;
fig. 13 is a schematic structural view of embodiment 3 of the present invention;
FIG. 14 is a hysteresis curve for different loading torque values for a pre-tightened bolt.
In the figure: 1-friction steel plate I, 2-friction steel plate II, 3-friction steel plate III, 4-friction steel plate IV, 5-pressing plate I, 6-pressing plate II, 7-pressing plate III, 8-blocking strip, 9-blocking block, 10-friction material I, 11-friction material II, 12-friction material III, 13-friction material IV, 14-pretightening bolt, 15-nut, 16-belleville spring, 17-sink groove, 18-first kidney-shaped hole, 19-second kidney-shaped hole and 20-cross-shaped groove sink head screw.
Detailed Description
As shown in fig. 1 to 14, in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A double-order friction damping device is characterized in that: the friction steel plate head of the first-order friction unit is opposite to the friction steel plate head of the second-order friction unit, and the friction steel plate head of the first-order friction unit is connected with a damping device and a main body structure through a pin shaft.
As shown in fig. 1-6, in the present embodiment, the first-order friction unit includes 2 pressing plates one 5, 4 friction materials one 10 and 1 friction steel plate one 1; the second-order friction unit comprises 2 first pressing plates, 5, 4 second friction materials, 11 and 1 second friction steel plate 2; a stop block 9 and a stop bar 8 are additionally arranged on one side of the first pressing plate 5, and sink grooves 17 are formed in the two sides of the first friction steel plate 1 and the two sides of the second friction steel plate 2; first friction material 10 and second friction material 11 center seted up loudspeaker form counter sink, placed between adjacent shelves strip 8 to fix it on clamp plate one 5 through cross slot counter sink screw 20, pretension bolt 14 passes the bolt hole of clamp plate one 5 and first waist type hole 18 of friction steel sheet one 1 and the bolt hole of clamp plate one 5 and second waist type hole 19 of friction steel sheet two 2 respectively to with nut 15 with its fastening connection, be provided with belleville spring 16 between pretension bolt 14 and nut 15, friction material make by half metal material, and friction material's side is provided with sealed glue and seals, the utility model discloses can realize the friction power consumption under slight shake and major earthquake, and first order frictional force and second order frictional force all can be adjusted, simultaneously, this double-step plays to slide friction damping device simple structure, the maintenance is changed conveniently, and the slip stroke is great, has superior power consumption shock-absorbing capacity.
Example 2
As shown in fig. 7-12, unlike embodiment 1, the first-order friction unit of this embodiment includes 2 second pressing plates 6, 4 third friction materials 12 and 1 third friction steel plate 3, and the second-order friction unit includes 2 second pressing plates 6, 4 fourth friction materials 13 and 1 fourth friction steel plate 4; a stop block 9 and a stop bar 8 are additionally arranged on one side of the second pressing plate 6, and sink grooves 17 are formed in two sides of the third friction steel plate 3 and the fourth friction steel plate 4; the surface of three 12 friction materials and four 13 friction materials seted up the bolt hole, pretension bolt 14 passes the bolt hole of two 6 and three 12 friction materials, the first waist type hole 18 of three 3 friction steel sheets and the bolt hole of two 6 and four 13 friction materials, the second waist type hole 19 of four 4 friction steel sheets respectively to fasten it with nut 15, pretension bolt 14 and nut 15 within a definite time are provided with belleville spring 16, friction materials make by nonmetal wear-resistant material, and friction materials's side is provided with sealed glue and seals, the utility model discloses the homoenergetic friction energy dissipation can be realized under the small earthquake and the major earthquake, and first order frictional force and second order frictional force all can be adjusted, simultaneously, this two rank plays to slide friction damping device simple structure, and the maintenance is changed conveniently, and the slip stroke is great, has superior energy dissipation shock-absorbing capacity.
Example 3
As shown in fig. 13, different from embodiment 1 and embodiment 2, the first-order friction unit of this embodiment includes that 2 clamp plates one 5, 1 clamp plate three 7, 2 friction steel sheet one 1 and 8 friction material one 10 are parallelly connected to constitute, the second-order friction unit include that 2 clamp plates one 5, 1 clamp plate three 7, 2 friction steel sheet two 2 and 8 friction material two 11 are parallelly connected to constitute, the number of piles of clamp plate three 7 will be less than 1 layer of the number of piles of friction steel sheet one 1 or friction steel sheet two 2, friction material make by wear-resistant coating, and friction material's side is provided with sealed glue and seals, the utility model discloses can realize the friction power consumption under little shake and the macroseism, and first-order friction power and second-order friction power all can be adjusted, simultaneously, this double-order friction damping device that slides simple structure, the maintenance is changed conveniently, and the slip stroke is great, has superior power consumption shock-absorbing capacity.
Example 4
The hysteresis curve shown in fig. 14 is characterized in that the adjustment of the friction force of the first-order friction unit and the second-order friction unit can be realized by changing the value of the torque loaded by the pre-tightening bolt, and the friction force of the first-order friction unit and the friction force of the second-order friction unit are gradually increased as the value of the torque loaded by the pre-tightening bolt is increased.
Finally, it should be noted that: the above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.
Claims (6)
1. A two-step friction damping device characterized by: including the first-order friction unit and the second order friction unit of series connection each other, first-order friction unit and second order friction unit arrange by clamp plate, friction material and friction steel sheet stromatolite and constitute, first-order friction unit and second order friction unit share same clamp plate, the friction steel sheet of first-order friction unit seted up heavy groove (17), the clamp plate add and be equipped with link stopper (9), heavy groove (17) and link stopper (9) cooperation form stop device, the friction material's of first-order friction unit coefficient of friction be less than the friction material's of second order friction unit coefficient of friction, friction steel sheet plate head seted up the round pin shaft hole, and the friction steel plate of first-order friction unit is opposite with the relative plate body of the friction steel plate head of second order friction unit, through the round pin axle with damping device and major structure connection.
2. A two-step friction damping device as defined in claim 1 wherein: the friction steel plate of the first-order friction unit is provided with a first kidney-shaped hole (18), the friction steel plate of the second-order friction unit is provided with a second kidney-shaped hole (19), the surface of the pressing plate is welded with the stop bars (8) and is provided with bolt holes, and the friction material is placed between the adjacent stop bars (8).
3. A dual-step friction damping device as defined in claim 2, wherein: the stopper (9) is placed in the middle of the frame into the sinking groove (17) to form a limiting device, a space is reserved between the stopper (9) and the sinking groove (17), the sinking groove (17) and the stopper (9) are identical in number and are at least 4, and the thickness of the friction material is higher than that of the stopper strip (8).
4. A two-step friction damping device as defined in claim 1 wherein: the friction steel plates of the first-order friction unit and the friction steel plates of the second-order friction unit are the same in number and are at least 1 respectively, and the friction materials of the first-order friction unit and the friction materials of the second-order friction unit are the same in number and are at least 4 respectively.
5. A two-step friction damping device as defined in claim 2 wherein: the length of the first waist-shaped holes (18) is larger than that of the second waist-shaped holes (19), the number of the first waist-shaped holes (18) is the same as that of the second waist-shaped holes (19), the first waist-shaped holes (18) and the second waist-shaped holes (19) can be formed in the length direction and the width direction by 2 or more than 2, the number of the pressing plates is at least 2, and the number and the arrangement direction of the bolt holes in the pressing plates are consistent with that of the first waist-shaped holes (18) and the second waist-shaped holes (19).
6. A two-step friction damping device as defined in claim 1 wherein: the friction material is made of a semi-metal or non-metal wear-resistant material and a wear-resistant coating material, and the side surface of the friction material is sealed by a sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221659584.XU CN217557881U (en) | 2022-06-29 | 2022-06-29 | Double-order friction damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221659584.XU CN217557881U (en) | 2022-06-29 | 2022-06-29 | Double-order friction damping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217557881U true CN217557881U (en) | 2022-10-11 |
Family
ID=83503812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221659584.XU Active CN217557881U (en) | 2022-06-29 | 2022-06-29 | Double-order friction damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217557881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059197A (en) * | 2022-06-29 | 2022-09-16 | 震安科技股份有限公司 | Novel plate-type double-step sliding friction damping energy dissipater |
-
2022
- 2022-06-29 CN CN202221659584.XU patent/CN217557881U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059197A (en) * | 2022-06-29 | 2022-09-16 | 震安科技股份有限公司 | Novel plate-type double-step sliding friction damping energy dissipater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211114191U (en) | Double-order friction damper | |
| CN217557881U (en) | Double-order friction damping device | |
| CN111764526B (en) | Combined disc spring sliding friction self-resetting energy dissipation damper | |
| CN111664208A (en) | Axial type variable rigidity friction damper | |
| CN210178066U (en) | Axial type shock attenuation friction damper | |
| CN110173059B (en) | SMA-wood friction damper with self-resetting function | |
| CN109853735B (en) | Recoverable friction energy dissipation wood structure beam-column joint with steel filling plate | |
| CN112576670B (en) | Rotatable reduction friction composite metal damper | |
| CN115059197A (en) | Novel plate-type double-step sliding friction damping energy dissipater | |
| CN111425040B (en) | Spring-added friction damper | |
| CN212479984U (en) | Axial variable-stiffness friction damper | |
| CN114482666B (en) | Friction damper with self-resetting function and energy consumption method thereof | |
| CN113417500A (en) | Bolt-free friction damping device | |
| CN105040852A (en) | Prestress viscoelastic damper | |
| CN217557880U (en) | Novel friction damping shock insulation rubber support | |
| CN216865554U (en) | Assembled rotary friction damping device | |
| CN113236003B (en) | Multidimensional damping device applied to prefabricated wallboard structure and damping method thereof | |
| CN214884573U (en) | Variable friction energy dissipation damper | |
| CN217001130U (en) | Bolt-free friction damping device | |
| CN114232828A (en) | Self-resetting friction-changing damper | |
| CN113026977A (en) | Multi-joint rotary friction damping device | |
| CN210086538U (en) | Energy dissipation device | |
| CN216406346U (en) | Parallel type graded sliding friction energy dissipater | |
| CN2923862Y (en) | Friction damper | |
| CN108331195B (en) | Displacement amplification type torsion damper and working method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |