CN113152723A - Multi-step sliding friction type damper - Google Patents
Multi-step sliding friction type damper Download PDFInfo
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- CN113152723A CN113152723A CN202110483142.8A CN202110483142A CN113152723A CN 113152723 A CN113152723 A CN 113152723A CN 202110483142 A CN202110483142 A CN 202110483142A CN 113152723 A CN113152723 A CN 113152723A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention relates to a multi-step sliding friction damper, comprising: a first end plate for mounting to the main body structure; the friction plates are attached to the plurality of oppositely arranged clamping plates, one ends of part of the clamping plates symmetrically arranged in the plurality of clamping plates are fixedly connected with the first end plate vertically, and the rest clamping plates are connected with the first end plate in a distance-adjustable mode through a first limiting structure; the second end plate is arranged on the main body structure and is opposite to the first end plate; the core plates are oppositely arranged and are inserted between two corresponding adjacent clamping plates, one ends of the core plates which are symmetrically arranged in the plurality of core plates are vertically and fixedly connected with the second end plate, and the rest core plates are connected with the second end plate in a distance-adjustable mode through the second limiting structure. The invention utilizes the first-stage friction force and the second-stage friction force which are generated successively to respectively deal with different types of earthquakes with different vibration magnitudes and directions.
Description
Technical Field
The invention relates to the field of dampers, in particular to a multi-stage sliding friction type damper.
Background
Frictional damping utilizes the principle of tribology to dissipate energy input into a structure due to vibration. In the building structure, the damage of the earthquake to the building structure can be effectively reduced by using the friction damper for shock absorption. The general friction damper includes a middle steel plate and backing plates at both sides, and consumes energy by friction between the steel plate and the backing plates.
However, in practical application, the vibration of different types of earthquakes is different in magnitude and direction, and a single friction damper is difficult to meet the damping requirements of different types of earthquakes, so that the damping performance is poor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a multi-stage sliding friction damper and solves the problem that a single friction damper in the prior art cannot meet the damping requirements of different types of earthquakes.
The technical scheme for realizing the purpose is as follows:
the invention provides a multi-step sliding friction damper, comprising:
a first end plate for mounting to the main body structure;
the friction plates are attached to the plurality of oppositely arranged clamping plates, one ends of part of the clamping plates which are symmetrically arranged in the plurality of clamping plates are fixedly connected with the first end plate vertically, and the rest clamping plates are connected with the first end plate in a distance-adjustable mode through a first limiting structure;
the second end plate is arranged on the main body structure and is opposite to the first end plate; and
the core plates are oppositely arranged and are inserted between two corresponding adjacent clamping plates, one end of part of the core plates which are symmetrically arranged in the plurality of core plates is vertically and fixedly connected with the second end plate, and the rest of the core plates are connected with the second end plate in a distance-adjustable mode through a second limiting structure.
A further improvement of the multi-step starting friction damper of the present invention is that,
the number of the clamping plates is three, the long edges of the two clamping plates positioned on the outer side are vertically and fixedly connected with the first end plate, and the clamping plates positioned on the inner side are connected with the first end plate in a distance-adjustable mode through the first limiting structure;
the number of the core plates is two, and the long sides of the two core plates are vertically and fixedly connected with the driving second end plate;
when the first end plate and the second end plate are displaced relatively, the first end plate drives the two clamping plates positioned on the outer side and the corresponding core plate to generate sliding friction to form a first-stage friction force;
after the clamping plate positioned on the inner side is limited by the first limiting structure, the clamping plate positioned on the inner side and the corresponding core plate generate sliding friction to form secondary friction force.
A further improvement of the multi-step starting friction damper of the present invention is that,
the two clamping plates positioned on the outer sides are provided with first through holes;
the clamping plate positioned on the inner side is provided with a first limiting groove corresponding to the first through hole along the length direction;
first limit structure includes:
the first bolt penetrates through the first limiting groove and the first through hole; the first nut is screwed on the first bolt, so that the clamping plates are connected in a limiting manner.
A further improvement of the multi-step starting friction damper of the present invention is that,
the first through hole is close to the first end plate, and a distance is reserved between the first through hole and the friction plate;
the first limiting groove is close to the first end plate, and a distance is reserved between the first limiting groove and the friction plate.
A further improvement of the multi-step starting friction damper of the present invention is that,
the number of the clamping plates is four, the short sides of the two clamping plates positioned on the outer side are fixedly connected with the first end plate vertically, and the two clamping plates positioned on the inner side are connected with the first end plate in a distance-adjustable mode through the first limiting structure;
the number of the core plates is three, and the short sides of the three core plates are vertically and fixedly connected with the second end plate;
when the first end plate and the second end plate are displaced relatively, the first end plate drives the two clamping plates positioned on the outer side and the corresponding core plate to generate sliding friction to form a first-stage friction force;
after the clamping plates positioned on the inner side are limited by the first limiting structure, two clamping plates positioned on the inner side and the corresponding core plates generate sliding friction to form secondary friction force.
A further improvement of the multi-step starting friction damper of the present invention is that,
the two clamping plates positioned on the outer sides are provided with first through holes;
the clamping plate positioned on the inner side is provided with a first limiting groove corresponding to the first through hole along the length direction;
first limit structure includes:
the first bolt penetrates through the first limiting groove and the first through hole; and the first nut is screwed on the first bolt, so that four clamping plates are connected in a limiting manner.
A further improvement of the multi-step starting friction damper of the present invention is that,
the first through hole is close to the first end plate, and a distance is reserved between the first through hole and the friction plate;
the first limiting groove is close to the first end plate, and a distance is reserved between the first limiting groove and the friction plate.
A further improvement of the multi-step starting friction damper of the present invention is that,
the number of the clamping plates is four, and the short sides of the four clamping plates are vertically and fixedly connected with the first end plate;
the short sides of the two core plates positioned at the outer side are vertically and fixedly connected with the second end plate, and the core plates positioned at the inner side are connected with the second end plate in a distance-adjustable manner through a second limiting structure;
when the first end plate and the second end plate are displaced relatively, the second end plate drives the two core plates positioned on the outer sides and the corresponding clamping plates to generate sliding friction to form a first-stage friction force;
after the core plate positioned at the inner side is limited by the second limiting structure, the core plate positioned at the inner side and the corresponding clamping plate generate sliding friction to form secondary friction force.
A further improvement of the multi-step starting friction damper of the present invention is that,
the two core plates positioned at the outer sides are provided with second through holes;
the core plate positioned at the inner side is provided with a second limiting groove corresponding to the second through hole along the length direction;
the second limit structure comprises:
the second bolt penetrates through the second limiting groove and the second through hole; and the second nut is screwed on the second bolt, so that the three core plates are connected in a limiting manner.
A further improvement of the multi-step starting friction damper of the present invention is that,
the length of the friction plates of the two clamping plates positioned at the outer side is less than that of the friction plates of the clamping plate positioned at the inner side.
The multistage sliding friction damper has the beneficial effects that:
according to the damper, the damper is arranged in the main body structure, when the first end plate and the second end plate relatively displace, the first end plate drives the clamping plate positioned on the outer side to move, and the second end plate drives the corresponding core plate to move, so that the clamping plate positioned on the outer side and the corresponding core plate generate sliding friction first to form a first-stage friction force; the clamping plates positioned on the inner side slide along with the core plates, and after the clamping plates positioned on the inner side are limited by the first limiting structures, the clamping plates positioned on the inner side and the corresponding core plates generate sliding friction to form secondary friction force.
The invention utilizes the first-stage friction force and the second-stage friction force which are generated successively to respectively correspond to different types of earthquakes with different vibration magnitudes and directions, thereby solving the problem that the single friction damper in the prior art is difficult to meet the damping requirements of the different types of earthquakes.
Drawings
FIG. 1 is a cross-sectional view of a first embodiment of a multi-step rising friction damper of the present invention.
FIG. 2 is a front view of an outboard clamp plate of a first embodiment of the multi-step rising friction damper of the present invention.
FIG. 3 is a front view of an inboard clamp plate of a first embodiment of the multi-step rising friction damper of the present invention.
FIG. 4 is a front view of a core plate of a first embodiment of the multi-step rising friction damper of the present invention.
FIG. 5 is a cross-sectional view of a second embodiment of a multi-step rising friction damper in accordance with the present invention.
FIG. 6 is a front view of an outboard clamp plate of a second embodiment of the multi-step rising friction damper of the present invention.
FIG. 7 is a front view of an inboard clamp plate of a second embodiment of the multi-step rising friction damper of the present invention.
FIG. 8 is a front view of a core plate of a second embodiment of the multi-step rising friction damper of the present invention.
FIG. 9 is a cross-sectional view of a third embodiment of a multi-step rising friction damper according to the present invention.
FIG. 10 is a front view of an outboard core plate of a third embodiment of the multi-step rising friction damper of the present invention.
FIG. 11 is a front view of an inboard core plate of a third embodiment of the multi-step rising friction damper of the present invention.
FIG. 12 is a front view of a cleat of a third embodiment of a multi-step rising friction damper of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to FIG. 1, there is shown a cross-sectional view of FIG. 1 illustrating a first embodiment of a multi-step friction launch damper of the present invention. FIG. 2 is a front view of an outboard clamp plate of a first embodiment of the multi-step rising friction damper of the present invention. FIG. 3 is a front view of an inboard clamp plate of a first embodiment of the multi-step rising friction damper of the present invention. FIG. 4 is a front view of a core plate of a first embodiment of the multi-step rising friction damper of the present invention. Referring to fig. 1 to 4, the multistage starting frictional damper of the present invention includes:
a first end plate for mounting to the main body structure;
the friction plates are attached to the plurality of oppositely arranged clamping plates, one ends of part of the clamping plates symmetrically arranged in the plurality of clamping plates are fixedly connected with the first end plate vertically, and the rest clamping plates are connected with the first end plate in a distance-adjustable mode through a first limiting structure;
the second end plate is arranged on the main body structure and is opposite to the first end plate; and
the core plates are oppositely arranged and are inserted between two corresponding adjacent clamping plates, one ends of the core plates which are symmetrically arranged in the plurality of core plates are vertically and fixedly connected with the second end plate, and the rest core plates are connected with the second end plate in a distance-adjustable mode through the second limiting structure.
Referring to fig. 1 to 4, in the first embodiment, there are three clamping plates (10, 11), the long sides of the two clamping plates 10 located at the outer side are fixedly connected to the first end plate 30, and the clamping plate 11 located at the inner side is connected to the first end plate 30 in a distance-adjustable manner through the first limiting structure 50; the distance between the end of the clamping plate 11 positioned at the inner side and the first end plate 30 is adjustable through the first limiting structure 50; the number of the core plates 20 is two, and the long sides of the two core plates 20 are vertically and fixedly connected with the driving second end plate 40; when the first end plate 30 and the second end plate 40 are relatively displaced, the first end plate 30 drives the two clamping plates 10 positioned at the outer side and the corresponding core plate 20 to firstly generate sliding friction to form a first-stage friction force; after the clamping plate 11 at the inner side is limited by the first limiting structure 50, sliding friction is generated between the clamping plate 11 at the inner side and the corresponding core plate 20 to form a secondary friction force.
In the first embodiment, as shown in fig. 2 and 3 in combination, the two clamping plates 10 located on the outer side are provided with the first through holes 100; the splint 11 positioned at the inner side is provided with a first limit groove 110 along the length direction; as shown in fig. 1, the first limiting structure 50 includes: a first bolt passing through the first limiting groove 110 and the first through hole 100; the first nut is screwed on the first bolt, thereby connecting a plurality of clamping plates (10, 11) in a limiting way.
In the first embodiment, the sandwich plate and the core plate are each a rectangular parallelepiped plate having long sides and short sides. The length direction of the clamping plate is along the long side direction of the clamping plate. The first end plate 30 is vertically and fixedly connected with the long edge of the splint 10 positioned at the outer side; the second end plate 40 is vertically fixed to the long side of the core plate 20.
Specifically, the plurality of first through holes 100 are provided at intervals along the long side direction of the two clamping plates 10 located on the outer side; the first limiting groove 110 is an oblong hole, and the oblong hole is arranged along the length direction of the splint 11 positioned on the inner side, so that the adjacent splints can move relatively along the length direction; the first stopper grooves 110 are provided at intervals along the longitudinal direction of the inner splint 11.
Specifically, the first through hole 100 is a circular hole, and the inner diameter of the circular hole is adapted to the outer diameter of the first bolt; the first limiting groove 110 is a long round hole, and the length of the long round hole is far greater than the outer diameter of the first bolt. The first bolt is relatively movable in the first stopper groove 110 of the inner clamping plate 11, and the first bolt and the outer clamping plate 10 are moved in synchronization, so that the inner clamping plate 11 and the outer clamping plate 10 are relatively movable.
The working principle of the first embodiment of the present invention: the damper is arranged in a main body structure, when a first end plate 30 and a second end plate 40 relatively displace, the first end plate 30 drives a clamping plate 10 positioned at the outer side to move, and the second end plate 40 drives a corresponding core plate 20 to move, so that a friction plate of the clamping plate 10 positioned at the outer side and the corresponding attached core plate 20 generate sliding friction first to form a first-stage friction force; the clamping plate positioned at the inner side slides along with the core plate until the first bolt moves to the edge of the first limiting groove 110, and then the clamping plate stops moving; after the inner clamping plate 11 is limited by the first limiting structure 50, the friction plates of the inner clamping plate 11 and the corresponding core plates 20 generate sliding friction to form a secondary friction force.
Furthermore, the damper further comprises a loading structure 70 connected with the clamping plates (10, 11) and the core plate 20 in a pulling mode, and the loading structure 70 is corresponding to the position range of the friction plates, so that the damper is integrally pre-stressed through the loading structure 70.
Specifically, the loading structure 70 includes: the high-strength bolt 71 vertically penetrates through the clamping plates (10, 11) and the core plate, and the belleville spring 72 and the gasket 73 are sleeved on the high-strength bolt 71 and attached to the two clamping plates 10 positioned on the outer sides.
Referring to fig. 2 and 3, the first through hole 100 is close to the first end plate 30, and a space is left between the first through hole 100 and the friction plate 60; the first limiting groove 110 is close to the first end plate 30, and a space is left between the first limiting groove 110 and the friction plate 60. A plurality of friction plates 60 are spaced along the long and short sides of the clamping plate.
Furthermore, after the clamping plate on the inner side is prevented from moving during primary friction, the clamping plate on the inner side is positioned in a range corresponding to the loading structure, a cavity is formed in a friction plate area, the friction plate of the clamping plate on the inner side can be lengthened, the cavity in a friction plate overlapping area is prevented, and the friction plate is not stressed uniformly.
The invention also provides a second embodiment. Referring to FIG. 5, a cross-sectional view of a second embodiment of the multi-step rising friction damper of the present invention is shown. FIG. 6 is a front view of an outboard clamp plate of a second embodiment of the multi-step rising friction damper of the present invention. FIG. 7 is a front view of an inboard clamp plate of a second embodiment of the multi-step rising friction damper of the present invention. FIG. 8 is a front view of a core plate of a second embodiment of the multi-step rising friction damper of the present invention. Referring to fig. 5 to 8, in the second embodiment, there are four clamping plates (10a, 11a), the short sides of the two clamping plates 10a located at the outer side are fixedly connected to the first end plate 30a, and the two clamping plates 11a located at the inner side are connected to the first end plate 30a in a distance-adjustable manner through the first limiting structure 50 a;
the number of the core plates 20a is three, and the short sides of the three core plates 20a are vertically and fixedly connected with the second end plate 40 a;
when the first end plate 30a and the second end plate 40a are relatively displaced, the first end plate 30a drives the two clamping plates 10a located at the outer side and the corresponding core plate 20a to generate sliding friction to form a first-stage friction force;
after the clamping plates 11a at the inner side are limited by the first limiting structures 50a, sliding friction is generated between the two clamping plates 11a at the inner side and the corresponding core plates 20a to form a secondary friction force.
In the second embodiment, the two clamping plates 10a located on the outer sides are provided with first through holes 100 a; the two clamping plates 11a positioned at the inner side are provided with first limiting grooves 110a along the length direction (short side); the first stopper structure 50a includes: a first bolt passing through the first limiting groove 110a and the first through hole 100 a; the first nut is screwed on the first bolt, thereby connecting the four clamping plates (10a, 11a) in a limiting way.
Specifically, the first through hole 100a is close to the first end plate 30a, and a space is left between the first through hole 100a and the friction plate; the first limiting groove 110a is close to the first end plate 30a, and a space is reserved between the first limiting groove 110a and the friction plate.
Specifically, the first through hole 100a is a circular hole, and the inner diameter of the circular hole is adapted to the outer diameter of the first bolt; the first limiting groove 110a is a long round hole, and the length of the long round hole is far greater than the outer diameter of the first bolt. The first bolt is relatively movable in the first stopper groove 110a of the inner clamping plate 11a, and the first bolt and the outer clamping plate 10a are moved in synchronization, so that the inner clamping plate 11a and the outer clamping plate 10a are relatively movable.
In the second embodiment, the damper further comprises a loading structure 70a connected with the clamping plates (10a, 11a) and the core plate 20a in a pulling mode, and the loading structure 70a applies pre-loading force to the whole damper through the loading structure 70a within the position range of the corresponding friction plates.
Specifically, the loading structure 70a includes: a high-strength bolt 71a vertically penetrating the clamping plates (10a, 11a) and the core plate, a belleville spring 72a sleeved on the high-strength bolt 71a and attached to the two clamping plates positioned at the outer sides, and a gasket 73 a.
The second end plate 40a is fixedly connected with the two core plates 20a located on the same plane, the two core plates 20a are located on two sides of the high-strength bolt 71a, and the two core plates 20a respectively correspond to the friction plates arranged on the clamping plate.
Further, the length of the friction plate 60a of the outer clamping plate 10a is smaller than that of the friction plate of the inner clamping plate 11 a.
The working principle of the second embodiment of the present invention: the damper of the second embodiment is installed in the main structure, when the first end plate 30a and the second end plate 40a relatively displace, the first end plate 30a drives the clamp plate 10a located at the outer side to move, and the second end plate 40a drives the corresponding core plate 20a to move, so that the friction plate of the clamp plate 10a located at the outer side and the corresponding attached core plate 20a generate sliding friction first to form a first-stage friction force; the clamping plate positioned at the inner side slides along with the core plate until the first bolt moves to the edge of the first limiting groove 110a, and then stops moving; after the inner clamping plate 11a is limited by the first limiting structure 50a, the friction plate of the inner clamping plate 11a and the corresponding core plate 20a generate sliding friction to form a secondary friction force.
The present invention also provides a third embodiment. Referring to FIG. 9, a cross-sectional view of a third embodiment of the multi-step rising friction damper of the present invention is shown. FIG. 10 is a front view of an outboard core plate of a third embodiment of the multi-step rising friction damper of the present invention. FIG. 11 is a front view of an inboard core plate of a third embodiment of the multi-step rising friction damper of the present invention. FIG. 12 is a front view of a cleat of a third embodiment of a multi-step rising friction damper of the present invention. Referring to fig. 9 to 12, four clamping plates 10b are provided, and the short sides of the four clamping plates 10b are vertically fixed to the first end plate 30 b; the number of the core plates (20b, 21b) is three, the short sides of the two core plates 20b positioned at the outer side are fixedly connected with the second end plate 40b vertically, and the core plates 21b positioned at the inner side are connected with the second end plate 40b in a distance-adjustable manner through a second limiting structure 50 b; when the first end plate 30b and the second end plate 40b are relatively displaced, the second end plate 40b drives the two core plates 20b positioned at the outer side and the corresponding clamping plates to firstly generate sliding friction to form a first-stage friction force; after the core plate located at the inner side is limited by the second limiting structure 50b, the core plate 21b located at the inner side and the corresponding clamping plate 10b generate sliding friction to form a secondary friction force.
Further, the two core plates 20b positioned at the outer side are provided with second through holes 200 b; the core plate 21b positioned at the inner side is provided with a second limit groove 210b along the length direction; the second stopper structure 50b includes: a second bolt passing through the second limiting groove 210b and the second through hole 200 b; and the second nut is screwed on the second bolt, so that three core plates are connected in a limiting manner.
Further, the lengths of the friction plates of the two clamping plates 10b positioned on the outer side are smaller than the lengths of the friction plates of the clamping plates 10b positioned on the inner side.
Further, the second through hole 200b is adjacent to the second end plate 40 b; the second limiting groove 210b is adjacent to the second end plate 40 b.
In the third embodiment, the invention further comprises a loading structure 70b connected with the clamping plate 10b and the core plate 20b in a pulling mode, and the loading structure 70b is corresponding to the friction 60b in the position range, so that the damper is integrally pre-stressed through the loading structure 70 b.
Specifically, the loading structure 70b includes: a high-strength bolt 71b vertically penetrating the clamping plate 10b and the core plates (20b, 21b), a belleville spring 72b sleeved on the high-strength bolt 71b and attached to the two clamping plates 10b positioned at the outer side, and a gasket 73 b.
The second end plate 40b is fixedly connected with the two core plates 20b positioned on the same plane, the two core plates 20b are positioned on two sides of the high-strength bolt 71b, and the two core plates 20b respectively correspond to the friction plates arranged on the clamping plate.
Further, the length of the friction plate 60b of the outer clamping plate 10b is smaller than that of the inner clamping plate.
The working principle of the third embodiment of the present invention is as follows: the damper of the third embodiment is installed in the main structure, when the first end plate 30b and the second end plate 40b are relatively displaced, the first end plate 30b drives the clamping plate 10b to move, and the second end plate 40b drives the core plate 20b located at the outer side to move, so that the friction plates of the core plate 20b located at the outer side and the corresponding clamping plate 10b generate sliding friction first to form a first-stage friction force; the core plate 21b positioned at the inner side slides together with the clamping plate until the second bolt moves to the edge of the second limiting groove 210 b; after the inner core plate 21b is limited by the second limiting structure 50b, the inner core plate 21b and the friction plate of the corresponding clamping plate generate sliding friction to form a secondary friction force.
The multistage sliding friction damper has the beneficial effects that:
according to the damper, the damper is arranged in the main body structure, when the first end plate and the second end plate relatively displace, the first end plate drives the clamping plate positioned on the outer side to move, and the second end plate drives the corresponding core plate to move, so that the clamping plate positioned on the outer side and the corresponding core plate generate sliding friction first to form a first-stage friction force; the clamping plates positioned on the inner side slide along with the core plates, and after the clamping plates positioned on the inner side are limited by the first limiting structures, the clamping plates positioned on the inner side and the corresponding core plates generate sliding friction to form secondary friction force. The invention utilizes the first-stage friction force and the second-stage friction force which are generated successively to respectively correspond to different types of earthquakes with different vibration magnitudes and directions, thereby solving the problem that the single friction damper in the prior art is difficult to meet the damping requirements of the different types of earthquakes.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A multi-step slip friction damper, comprising:
a first end plate for mounting to the main body structure;
the friction plates are attached to the plurality of oppositely arranged clamping plates, one ends of part of the clamping plates which are symmetrically arranged in the plurality of clamping plates are fixedly connected with the first end plate vertically, and the rest clamping plates are connected with the first end plate in a distance-adjustable mode through a first limiting structure;
the second end plate is arranged on the main body structure and is opposite to the first end plate; and the core plates are oppositely arranged and are inserted between two corresponding adjacent clamping plates, one end of part of the core plates which are symmetrically arranged in the plurality of core plates is vertically and fixedly connected with the second end plate, and the rest of the core plates are connected with the second end plate in a distance-adjustable manner through a second limiting structure.
2. The multi-step slip friction damper of claim 1,
the number of the clamping plates is three, the long edges of the two clamping plates positioned on the outer side are vertically and fixedly connected with the first end plate, and the clamping plates positioned on the inner side are connected with the first end plate in a distance-adjustable mode through the first limiting structure;
the number of the core plates is two, and the long sides of the two core plates are vertically and fixedly connected with the driving second end plate;
when the first end plate and the second end plate are displaced relatively, the first end plate drives the two clamping plates positioned on the outer side and the corresponding core plate to generate sliding friction to form a first-stage friction force;
after the clamping plate positioned on the inner side is limited by the first limiting structure, the clamping plate positioned on the inner side and the corresponding core plate generate sliding friction to form secondary friction force.
3. The multi-step slip friction damper of claim 2,
the two clamping plates positioned on the outer sides are provided with first through holes;
the clamping plate positioned on the inner side is provided with a first limiting groove corresponding to the first through hole along the length direction;
first limit structure includes:
the first bolt penetrates through the first limiting groove and the first through hole; the first nut is screwed on the first bolt, so that the clamping plates are connected in a limiting manner.
4. The multi-step slip friction damper of claim 3,
the first through hole is close to the first end plate, and a distance is reserved between the first through hole and the friction plate;
the first limiting groove is close to the first end plate, and a distance is reserved between the first limiting groove and the friction plate.
5. The multi-step slip friction damper of claim 1,
the number of the clamping plates is four, the short sides of the two clamping plates positioned on the outer side are fixedly connected with the first end plate vertically, and the two clamping plates positioned on the inner side are connected with the first end plate in a distance-adjustable mode through the first limiting structure;
the number of the core plates is three, and the short sides of the three core plates are vertically and fixedly connected with the second end plate;
when the first end plate and the second end plate are displaced relatively, the first end plate drives the two clamping plates positioned on the outer side and the corresponding core plate to generate sliding friction to form a first-stage friction force;
after the clamping plates positioned on the inner side are limited by the first limiting structure, two clamping plates positioned on the inner side and the corresponding core plates generate sliding friction to form secondary friction force.
6. The multi-step slip friction damper of claim 5,
the two clamping plates positioned on the outer sides are provided with first through holes;
the clamping plate positioned on the inner side is provided with a first limiting groove corresponding to the first through hole along the length direction;
first limit structure includes:
the first bolt penetrates through the first limiting groove and the first through hole; and the first nut is screwed on the first bolt, so that four clamping plates are connected in a limiting manner.
7. The multi-step slip friction damper of claim 6,
the first through hole is close to the first end plate, and a distance is reserved between the first through hole and the friction plate;
the first limiting groove is close to the first end plate, and a distance is reserved between the first limiting groove and the friction plate.
8. The multi-step slip friction damper of claim 1,
the number of the clamping plates is four, and the short sides of the four clamping plates are vertically and fixedly connected with the first end plate;
the short sides of the two core plates positioned at the outer side are vertically and fixedly connected with the second end plate, and the core plates positioned at the inner side are connected with the second end plate in a distance-adjustable manner through a second limiting structure;
when the first end plate and the second end plate are displaced relatively, the second end plate drives the two core plates positioned on the outer sides and the corresponding clamping plates to generate sliding friction to form a first-stage friction force;
after the core plate positioned at the inner side is limited by the second limiting structure, the core plate positioned at the inner side and the corresponding clamping plate generate sliding friction to form secondary friction force.
9. The multi-step slip friction damper of claim 8,
the two core plates positioned at the outer sides are provided with second through holes;
the core plate positioned at the inner side is provided with a second limiting groove corresponding to the second through hole along the length direction;
the second limit structure comprises:
the second bolt penetrates through the second limiting groove and the second through hole; and the second nut is screwed on the second bolt, so that the three core plates are connected in a limiting manner.
10. The multi-step slip friction damper of claim 1,
the length of the friction plates of the two clamping plates positioned at the outer side is less than that of the friction plates of the clamping plate positioned at the inner side.
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| CN202110483142.8A CN113152723A (en) | 2021-04-30 | 2021-04-30 | Multi-step sliding friction type damper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293675A (en) * | 2022-02-23 | 2022-04-08 | 兰州理工大学 | Friction-metal yield composite type graded damper |
| CN114961007A (en) * | 2022-04-25 | 2022-08-30 | 上海史狄尔建筑减震科技有限公司 | Multi-order sliding friction type damper and connecting structure thereof |
| CN115075417A (en) * | 2022-07-19 | 2022-09-20 | 震安科技股份有限公司 | Double-step friction damper |
-
2021
- 2021-04-30 CN CN202110483142.8A patent/CN113152723A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293675A (en) * | 2022-02-23 | 2022-04-08 | 兰州理工大学 | Friction-metal yield composite type graded damper |
| CN114961007A (en) * | 2022-04-25 | 2022-08-30 | 上海史狄尔建筑减震科技有限公司 | Multi-order sliding friction type damper and connecting structure thereof |
| CN115075417A (en) * | 2022-07-19 | 2022-09-20 | 震安科技股份有限公司 | Double-step friction damper |
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