CN218028292U - Double-order friction damper - Google Patents
Double-order friction damper Download PDFInfo
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- CN218028292U CN218028292U CN202222581522.8U CN202222581522U CN218028292U CN 218028292 U CN218028292 U CN 218028292U CN 202222581522 U CN202222581522 U CN 202222581522U CN 218028292 U CN218028292 U CN 218028292U
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Abstract
The utility model relates to the field of dampers, and discloses a double-step friction damper, which comprises a central plate with a cross-shaped section, wherein a horizontal plate of the central plate is provided with a strip-shaped slotted hole; a first link frictionally coupled to one of the horizontal plates of the center plates; the first SMA spring is connected with the first connecting piece and the central plate respectively; a second link frictionally coupled to another one of the horizontal plates of the center plates; and a second SMA spring connected to the second link and the center plate, respectively. A friction force difference exists between the friction force between the first connecting piece and one of the horizontal plates of the central plates and the friction force between the second connecting piece and the other horizontal plate of the central plates. The utility model discloses after two sections friction damper's well board takes place relative displacement, can independently resume initial position after the external force is cancelled, improved two rank friction damper's environmental suitability.
Description
Technical Field
The utility model relates to a attenuator field especially relates to a two-step friction damper.
Background
The friction type damper converts vibration energy of a building into heat energy for absorption by utilizing friction force which is generated on a contact surface and is opposite to the displacement direction when two contact objects generate relative displacement. The friction damper is used as an energy consumption device, and has good application prospect due to strong energy consumption capability, small influence of load size and frequency on the performance, simple structure, easy material taking and low manufacturing cost. Particularly has unique advantages in controlling structural fault seismic response and middle and high-rise structural seismic response.
The environmental adaptability refers to the capability of the product to realize all preset performances and functions without damage under the action of comprehensive environmental factors in the service process, and is the concrete embodiment of the environmental adaptability of the product. The displacement of a central plate in the existing double-order friction damper structure is changed once, and the central plate is difficult to recover to an initial position under the action of the central plate, for example, the central plate is sequentially displaced with two friction units with different friction forces, when the central plate is reset under the action of external force, the central plate can be preferentially displaced with the friction unit with the small friction force, and the relative displacement between the central plate and the friction unit with the large friction force is not recovered in the process, so that the central plate cannot be recovered to the initial position, and the environmental adaptability of the whole double-order friction damper is poor.
The patent with publication number CN211114191U discloses a double-step friction damper, which comprises a central plate, a first friction unit and a second friction unit; the transverse section of the central plate is of a cross structure, and strip-shaped slotted holes are respectively formed in two axial sides of the central plate; the first friction unit and the second friction unit perform axial relative friction movement with the central plate along the slotted hole; the friction force among the first friction unit, the second friction unit and the center plate is different; the utility model discloses utilize the principle of two-step friction damper segmentation work, the frictional force under the control damper corresponds different earthquake loads can effectual realization friction damper be exerted oneself and is changed along with the earthquake effect, satisfies the absorbing design demand of structure. However, in this patent, once a displacement occurs between the center plate and the first friction unit or between the center plate and the second friction unit, the center plate cannot return to the initial position under its own action, so that the environmental adaptability of the double-step friction damper in this patent is reduced.
In view of this, how to change the problem that the central plate in the double-section friction damper in the prior art cannot be restored to the initial position after the relative displacement occurs, that is, the problem that the double-step friction damper is poor in environmental adaptability, becomes a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing a two-step friction damper to realize taking place the relative displacement back when two sections friction damper's well core plate, can independently resume initial position after the external force is cancelled, and then improve two-step friction damper's environmental suitability.
In order to achieve the above purpose, the technical scheme of the utility model is that: a dual-stage friction damper comprising:
the section of the central plate is of a cross structure, and a horizontal plate of the central plate is provided with a slotted hole;
a first link frictionally coupled to one of the horizontal plates of the center plates;
a first SMA spring coupled to the first coupler and the center plate, respectively;
a second link frictionally coupled to another one of the horizontal plates of the center plates;
a second SMA spring coupled to the second link and the center plate, respectively;
a friction force difference exists between the friction force between the first connecting piece and one of the horizontal plates of the central plates and the friction force between the second connecting piece and the other horizontal plate of the central plates.
Further, the first connecting piece comprises a first end plate and a first side plate, the side wall of the first end plate close to the central plate is vertically and fixedly connected with two first side plates, the two first side plates are arranged in parallel at an interval, one horizontal plate of the central plates is arranged at the interval of the two first side plates, and the two first side plates are respectively in friction connection with one horizontal plate of the central plates;
the second connecting piece comprises a second end plate and a second side plate, the side wall, close to the central plate, of the second end plate is vertically and fixedly connected with the two second side plates, the two second side plates are arranged in a spaced and parallel mode, the other horizontal plate of the central plate is arranged at the position, close to the gap between the two second side plates, of the two second side plates, and the two second side plates are respectively in friction connection with the other horizontal plate of the central plate.
Further, one end of the first SMA spring is connected to a side wall at the interval of the two first side plates, and the other end of the first SMA spring is connected to a side wall of one horizontal plate of the central plates;
and the side wall at the interval of the two second side plates is connected with one end of the second SMA spring, and the side wall of the other horizontal plate of the central plates is connected with the other end of the second SMA spring.
Furthermore, a first friction plate is arranged on the opposite surface of one horizontal plate of the first side plate and the central plate, a second friction plate is arranged on the opposite surface of the other horizontal plate of the second side plate and the central plate, and the first friction plate and the second friction plate are both used for friction energy dissipation.
Further, a first elastic plate is arranged on a side wall of the first side plate close to the vertical plate of the central plate, the first elastic plate comprises a first arc-shaped section and two first fixing sections respectively connected with two ends of the first arc-shaped section, an opening of the first arc-shaped section is arranged towards the first side plate, a first rubber plate is arranged on one side of the first arc-shaped section close to the vertical plate of the central plate, the first rubber plate is in clearance fit with the vertical plate of the central plate, and the first fixing sections are fixedly connected with the side wall of the first side plate close to the vertical plate of the central plate;
the second side plate is close to be provided with the second elastic plate on the lateral wall of the vertical board of well core plate, the second elastic plate include the second segmental arc and with two second canned paragraph that the both ends of second segmental arc are connected respectively are connected, the opening orientation of second segmental arc the second side plate sets up, the second segmental arc is close to one side of the vertical board of well core plate is provided with the second rubber slab, the second rubber slab with well core plate's vertical slab clearance fit, the second canned paragraph with the second side plate is close to the lateral wall fixed connection of the vertical board of well core plate.
Further, a third elastic plate is fixedly connected to the inner surface of the first arc-shaped section, the third elastic plate is in a V shape, a first slit is formed in the inner surface of the third elastic plate, and the outer surface of the third elastic plate is in clearance fit with the first side plate;
the inner surface of the second arc-shaped section is fixedly connected with a fourth elastic plate, the fourth elastic plate is V-shaped, a second crack is formed in the fourth elastic plate, and the outer surface of the fourth elastic plate is in clearance fit with the second side plate.
Further, the first rubber plate is arranged close to the side wall of the central plate vertical plate and is parallel to the side wall of the central plate vertical plate;
the second rubber plate is arranged close to the side wall of the central plate vertical plate and is parallel to the side wall of the central plate vertical plate.
Furthermore, the first side plate is provided with a first through hole, the first through hole is arranged opposite to the slotted hole of one of the horizontal plates of the central plate, and a fastener penetrates through the first through hole and the slotted hole of one of the horizontal plates of the central plate;
the second side plate is provided with a second through hole, the second through hole is opposite to the slotted hole of the other horizontal plate of the center plates, and the fastener penetrates through the second through hole and the slotted hole of the other horizontal plate of the center plates.
Further, the fastener includes a fastening bolt, a fastening nut, and a washer provided between the fastening bolt and the fastening nut.
Further, the first SMA spring and the second SMA spring are shape memory alloy springs, and the shape memory alloy is Ni-Ti alloy.
Compared with the prior art, the utility model at least has following advantage:
when the double-order friction damping device is used, the first connecting piece and the second connecting piece are connected with the structure of an application object up and down through the connecting members respectively, and when external force causes relative displacement of the first connecting piece and the second connecting piece, the first connecting piece and the second connecting piece sequentially and relatively displace with the central plate, so that double-order friction damping is realized. When the external force disappears, the relative displacement between the center plate and the first link returns to the initial state under the action of the first SMA spring, and the relative displacement between the center plate and the second link returns to the initial state under the action of the second SMA spring. The utility model discloses can resume to initial condition after the external force disappears gradually, improve the utility model discloses an environmental suitability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic view of the dual-step friction damper of the present invention;
fig. 2 is a schematic diagram of the center plate of the present invention;
FIG. 3 is a top view of the dual-stage friction damper of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 3;
fig. 5 is a partially enlarged view of the region B in fig. 4.
Reference numerals are as follows: 1. a center plate; 2. a first connecting member; 3. a first SMA spring; 4. a second connecting member; 5. a second SMA spring; 6. a first friction plate; 7. a second friction plate; 8. a first elastic plate; 9. a first rubber sheet; 10. a second elastic plate; 11. a second rubber sheet; 12. a third elastic plate; 13. a fourth elastic plate; 14. a fastener; 201. a first end plate; 202. a first side plate; 401. a second end plate; 402. a second side plate; 801. a first arcuate segment; 802. a first fixed section; 1001. a second arcuate segment; 1002. a second fixed section; 1401. fastening a bolt; 1402. fastening a nut; 1403. and (6) a gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the following detailed description.
Referring to fig. 1, 2 and 4, the present invention provides a double step friction damper comprising a central plate 1, a first connecting member 2, a first SMA spring 3, a second connecting member 4 and a second SMA spring 5.
Wherein: the cross section of the central plate 1 is of a cross structure, the central plate 1 comprises a horizontal plate and a vertical plate which are arranged in a crossed manner, and a slotted hole is formed in the horizontal plate of the central plate 1 in a penetrating manner; the first connecting piece 2 is in friction connection with one horizontal plate of the central plates 1; the first SMA spring 3 is respectively connected with the first connecting piece 2 and the central plate 1; the second connecting piece 4 is in friction connection with the other horizontal plate of the central plates 1; the second SMA spring 5 is connected to the second connecting member 4 and the center plate 1, respectively. There is a difference in friction between the first link 2 and the horizontal plate of the center plate 1 and the friction between the second link 4 and the horizontal plate of the center plate 1. Energy is consumed between the first connecting piece 2 and the central plate 1 and between the second connecting piece 4 and a horizontal plate of the central plate 1 through friction, and double-order friction damping is achieved.
Specifically, the first and second SMA springs 3 and 5 are shape memory alloy springs, and the shape memory alloy is Ni — Ti alloy.
Alternatively, in the present invention, the friction between the first connecting member 2 and one of the horizontal plates of the central plate 1 is smaller than the friction between the second connecting member 4 and the other horizontal plate of the central plate 1. In particular, this can be achieved by setting different coefficients of friction or different positive pressures.
The present invention is explained in that the frictional force between the first connecting member 2 and one of the horizontal plates of the center plate 1 is smaller than the frictional force between the second connecting member 4 and the other of the horizontal plates of the center plate 1. When the damper is used, the first connecting piece 2 and the second connecting piece 4 are respectively connected with the structure of an application object up and down through the connecting members, when external force causes the relative displacement of the first connecting piece 2 and the second connecting piece 4, the external force drives the two-step friction damper to slide relatively, when the damper is displaced relatively, the relative displacement between the first connecting piece 2 and the central plate 1 is generated, when the relative displacement of the first connecting piece 2 is gradually increased, the second connecting piece 4 and the central plate 1 are displaced relatively, and larger friction force is generated, so that the requirements that the friction damper provides different damping forces required by different external force stages are met. When the external force disappears, the relative displacement between the center plate 1 and the first link 2 is restored to the initial state under the force of the first SMA spring 3, and the relative displacement between the center plate 1 and the second link 4 is restored to the initial state under the force of the second SMA spring 5. Under first SMA spring 3 and 5 effort of second SMA spring, the utility model discloses can resume to initial condition gradually after the external force disappears, improve the utility model discloses an environmental suitability.
Preferably, with particular reference to fig. 4, the first connecting member 2 includes a first end plate 201 and first side plates 202, two first side plates 202 are vertically and fixedly connected to the side wall of the first end plate 201 close to the central plate 1, the two first side plates 202 are arranged in parallel at intervals, one horizontal plate of the central plate 1 is arranged at the interval between the two first side plates 202, and the two first side plates 202 are respectively connected with one horizontal plate of the central plate 1 in a friction manner and perform friction energy consumption when relative displacement occurs.
The second connecting member 4 includes a second end plate 401 and a second side plate 402, two second side plates 402 are vertically and fixedly connected to the side wall of the second end plate 401 close to the central plate 1, the two second side plates 402 are arranged in parallel at intervals, another horizontal plate of the central plate 1 is arranged at the interval of the two second side plates 402, and the two second side plates 402 are respectively in friction connection with the other horizontal plate of the central plate 1 and perform friction energy consumption when relative displacement occurs.
When specifically using, the utility model discloses two rank friction damper assembles fixedly through first end plate 201 and second end plate 401 at both ends and the external world, it is to receive the exogenic action as first connecting piece 2 and/or second connecting piece 4, between first curb plate 202 and well core plate 1, the friction power consumption can be realized to the homoenergetic between second curb plate 402 and the well core plate 1, and between first curb plate 202 and well core plate 1, friction power consumption looks alternate segregation between second curb plate 402 and the well core plate 1, can realize independent action or fore-and-aft action, effectively improve two rank damper's application range, under first SMA spring 3 and second SMA spring 5 effort, between first end plate 201 and well core plate 1, displacement between second end plate 401 and the well core plate 1 can resume to initial condition, improved greatly the utility model discloses an suitability.
Preferably, one end of the first SMA spring 3 is connected to a side wall of a space between the two first side plates 202, and the other end of the first SMA spring 3 is connected to a side wall of one horizontal plate of the central plates 1. One end of a second SMA spring 5 is connected to the side wall of the interval between the two second side plates 402, and the other end of the second SMA spring 5 is connected to the side wall of the other horizontal plate of the central plate 1. It should be noted that the first SMA spring 3 and the second SMA spring 5 are connected by welding.
Preferably, the first friction plate 6 is arranged on the opposite surface of one horizontal plate of the first side plate 202 and the central plate 1, the second friction plate 7 is arranged on the opposite surface of the other horizontal plate of the second side plate 402 and the central plate 1, and the first friction plate 6 and the second friction plate 7 are both used for friction energy dissipation. The utility model discloses a there is the frictional force difference in the frictional force between the horizontal plate of first curb plate 202 and well plate 1 and the frictional force between the horizontal plate of second curb plate 402 and well plate 1 that the coefficient of friction between through first friction plate 6 and second friction plate 7 is different to be realized. Specifically, the coefficient of friction of first friction plate 6 is less than the coefficient of friction of second friction plate 7, the utility model discloses well first friction plate 6 can produce the relative slip power consumption at the relatively less within range of external effort, and second friction plate 7 can produce the relative slip power consumption when external effort is great, and brass is chooseed for use to the material of first friction plate 6 for example, and polytetrafluoroethylene is chooseed for use to the material of second friction plate 7.
Preferably, referring to fig. 3, a first elastic plate 8 is disposed on a side wall of the first side plate 202 close to the vertical plate of the central plate 1, the first elastic plate 8 includes a first arc section 801 and two first fixing sections 802 connected to two ends of the first arc section 801 respectively, an opening of the first arc section 801 is disposed toward the first side plate 202, a first rubber plate 9 is disposed on a side of the first arc section 801 close to the vertical plate of the central plate 1, the first rubber plate 9 is in clearance fit with the vertical plate of the central plate 1, the first fixing sections 802 are fixedly connected to the side wall of the first side plate 202 close to the vertical plate of the central plate 1, and the fixing connection can be performed by welding or bolting. First rubber slab 9 realizes the protection to well core plate 1, and first elastic plate 8 can form the buffering when well core plate 1 and first connecting piece 2 are close to relatively, and the elastic potential energy that first elastic plate 8 obtained can form certain thrust effect to well core plate 1, impels well core plate 1 and first connecting piece 2 to resume to initial position, improves the utility model discloses an environmental suitability.
A second elastic plate 10 is arranged on the side wall of the vertical plate of the second side plate 402 close to the central plate 1, the second elastic plate 10 comprises a second arc-shaped section 1001 and two second fixing sections 1002 connected with two ends of the second arc-shaped section 1001 respectively, the opening of the second arc-shaped section 1001 is arranged towards the second side plate 402, a second rubber plate 11 is arranged on one side of the second arc-shaped section 1001 close to the vertical plate of the central plate 1, the second rubber plate 11 is in clearance fit with the vertical plate of the central plate 1, and the second fixing sections 1002 are fixedly connected with the side wall of the vertical plate of the second side plate 402 close to the central plate 1. Second rubber slab 11 realizes the protection to well core plate 1, and second elastic plate 10 can form the buffering when well core plate 1 good people second connecting piece 4 is close to relatively, and the elastic potential energy that second elastic plate 10 obtained can form certain thrust effect to well core plate 1, impels well core plate 1 and second connecting piece 4 to resume to initial position, improves the utility model discloses an environmental suitability.
Preferably, a third elastic plate 12 is fixedly welded to an inner surface of the first arc section 801 (i.e., a side surface of the first arc section facing the opening), the third elastic plate 12 is V-shaped, the opening of the third elastic plate 12 is arranged opposite to the opening of the first arc section 801, a first slit is formed on the inner surface of the third elastic plate 12, so that an elastic space of the third elastic plate 12 is conveniently increased, and an outer surface of the third elastic plate 12 is in clearance fit with the first side plate 202; the internal surface (the side that the second segmental arc opening orientation was said) fixedly connected with fourth elastic plate 13 of second segmental arc 1001, and fourth elastic plate 13 is the V-arrangement, and the opening of fourth elastic plate 13 sets up with the opening of second segmental arc 1001 relatively, has seted up the second crack in the fourth elastic plate 13, is convenient for improve the elastic space of third elastic plate 12, the surface and the second curb plate 402 clearance fit of fourth elastic plate 13.
Preferably, the first rubber plate 9 is arranged in parallel with the side wall of the vertical plate of the central plate 1 near the side wall of the vertical plate of the central plate 1, so that the first rubber plate 9 has a larger contact area with the vertical plate of the central plate 1, the acting pressure between the first rubber plate 9 and the vertical plate of the central plate 1 is reduced, and the second rubber plate 11 is arranged in parallel with the side wall of the vertical plate of the central plate 1 near the side wall of the vertical plate of the central plate 1.
Preferably, referring to fig. 4 to 5, the first side plate 202 is provided with a first through hole, the first through hole is arranged opposite to the slotted hole of one of the horizontal plates of the central plate 1, and the first through hole and the slotted hole of one of the horizontal plates of the central plate 1 are provided with a fastener 14 in a penetrating manner; the second side plate 402 is provided with a second through hole, the second through hole is opposite to the slotted hole of the other horizontal plate of the central plate 1, and the fastener 14 penetrates through the second through hole and the slotted hole of the other horizontal plate of the central plate 1.
Specifically, the fastener 14 includes a fastening bolt 1401, a fastening nut 1402, and a washer 1403 provided between the fastening bolt 1401 and the fastening nut 1402.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (10)
1. A dual-stage friction damper, comprising:
the section of the central plate (1) is of a cross structure, and a horizontal plate of the central plate (1) is provided with a slotted hole;
a first connection member (2) frictionally connected to one of the horizontal plates of the central plate (1);
a first SMA spring (3) connected to the first link (2) and the center plate (1), respectively;
a second connection (4) frictionally connected to another one of the horizontal plates of the central plate (1);
a second SMA spring (5) connected to the second link (4) and the center plate (1), respectively;
the friction force between the first connecting piece (2) and one of the horizontal plates of the central plate (1) and the friction force between the second connecting piece (4) and the other horizontal plate of the central plate (1) have a friction difference.
2. The dual stage friction damper as recited in claim 1,
the first connecting piece (2) comprises a first end plate (201) and first side plates (202), the side wall, close to the central plate (1), of the first end plate (201) is vertically and fixedly connected with the two first side plates (202), the two first side plates (202) are arranged in parallel at intervals, one horizontal plate of the central plate (1) is arranged at the interval of the two first side plates (202), and the two first side plates (202) are respectively in friction connection with one horizontal plate of the central plate (1);
the second connecting piece (4) comprises a second end plate (401) and a second side plate (402), the second end plate (401) is close to the side wall of the central plate (1) and is vertically and fixedly connected with the two second side plates (402), the two second side plates (402) are arranged in parallel at intervals, the interval of the two second side plates (402) is provided with the other horizontal plate of the central plate (1), and the two second side plates (402) are respectively in friction connection with the other horizontal plate of the central plate (1).
3. The dual stage friction damper as recited in claim 2,
the side wall of the interval position of the two first side plates (202) is connected with one end of the first SMA spring (3), and the side wall of one horizontal plate of the central plate (1) is connected with the other end of the first SMA spring (3);
the side wall at the interval of the two second side plates (402) is connected with one end of the second SMA spring (5), and the side wall of the other horizontal plate of the central plate (1) is connected with the other end of the second SMA spring (5).
4. The double-stage friction damper according to claim 3, characterized in that the facing surfaces of the first side plate (202) and one of the horizontal plates of the central plate (1) are each provided with a first friction plate (6), the facing surfaces of the second side plate (402) and the other of the horizontal plates of the central plate (1) are each provided with a second friction plate (7), and the first friction plate (6) and the second friction plate (7) are each used for friction energy dissipation.
5. The dual stage friction damper as recited in claim 2,
a first elastic plate (8) is arranged on the side wall of the first side plate (202) close to the vertical plate of the central plate (1), the first elastic plate (8) comprises a first arc-shaped section (801) and two first fixing sections (802) respectively connected with two ends of the first arc-shaped section (801), the opening of the first arc-shaped section (801) is arranged towards the first side plate (202), a first rubber plate (9) is arranged on one side of the first arc-shaped section (801) close to the vertical plate of the central plate (1), the first rubber plate (9) is in clearance fit with the vertical plate of the central plate (1), and the first fixing sections (802) are fixedly connected with the side wall of the first side plate (202) close to the vertical plate of the central plate (1);
the second side plate (402) is close to and is provided with second elastic plate (10) on the lateral wall of the vertical board of well board (1), second elastic plate (10) include second segmental arc (1001) and with two fixed sections (1002) that are connected respectively are connected at the both ends of second segmental arc (1001), the opening orientation of second segmental arc (1001) second side plate (402) set up, second segmental arc (1001) are close to one side of the vertical board of well board (1) is provided with second rubber slab (11), second rubber slab (11) with the vertical board clearance fit of well board (1), second fixed section (1002) with second side plate (402) are close to the lateral wall fixed connection of the vertical board of well board (1).
6. The dual stage friction damper as recited in claim 5,
a third elastic plate (12) is fixedly connected to the inner surface of the first arc-shaped section (801), the third elastic plate (12) is V-shaped, a first crack is formed in the inner surface of the third elastic plate (12), and the outer surface of the third elastic plate (12) is in clearance fit with the first side plate (202);
the inner surface of the second arc-shaped section (1001) is fixedly connected with a fourth elastic plate (13), the fourth elastic plate (13) is V-shaped, a second crack is formed in the fourth elastic plate (13), and the outer surface of the fourth elastic plate (13) is in clearance fit with the second side plate (402).
7. The dual stage friction damper as recited in claim 6,
the first rubber plate (9) is arranged close to the side wall of the vertical plate of the central plate (1) and is parallel to the side wall of the vertical plate of the central plate (1);
the second rubber plate (11) is close to the side wall of the vertical plate of the central plate (1) and is arranged in parallel with the side wall of the vertical plate of the central plate (1).
8. The dual stage friction damper as recited in claim 2,
the first side plate (202) is provided with a first through hole, the first through hole is opposite to the slotted hole of one horizontal plate of the central plates (1), and a fastener (14) penetrates through the first through hole and the slotted hole of one horizontal plate of the central plates (1);
the second side plate (402) is provided with a second through hole, the second through hole is opposite to the slotted hole of the other horizontal plate of the central plate (1), and the fastener (14) penetrates through the second through hole and the slotted hole of the other horizontal plate of the central plate (1).
9. The double step friction damper according to claim 8, characterized in that the fastener (14) comprises a fastening bolt (1401), a fastening nut (1402) and a washer (1403) disposed between the fastening bolt (1401) and the fastening nut (1402).
10. The dual stage friction damper according to any of claims 1 to 9, wherein the first and second SMA springs (3, 5) are shape memory alloy springs.
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| CN202222581522.8U CN218028292U (en) | 2022-09-29 | 2022-09-29 | Double-order friction damper |
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| CN202222581522.8U CN218028292U (en) | 2022-09-29 | 2022-09-29 | Double-order friction damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116904240A (en) * | 2023-09-13 | 2023-10-20 | 山西德远净能环境科技股份有限公司 | Separation equipment for efficiently removing hydrogen sulfide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116904240A (en) * | 2023-09-13 | 2023-10-20 | 山西德远净能环境科技股份有限公司 | Separation equipment for efficiently removing hydrogen sulfide |
| CN116904240B (en) * | 2023-09-13 | 2023-11-28 | 山西德远净能环境科技股份有限公司 | Separation equipment for efficiently removing hydrogen sulfide |
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