Synergistic friction damper

Abstract

The utility model discloses a synergistic friction damper which comprises rotating plates, an upper end plate, a lower end plate and friction plates, wherein the upper end plate and the lower end plate are arranged between the two rotating plates, and the friction plates are arranged on the surfaces, facing the lower end plate, of the rotating plates. An upper pin shaft and a lower pin shaft are connected between the two rotating plates, the two rotating plates are rotationally connected with the upper end plate through the upper pin shaft, the two rotating plates are rotationally connected with the lower end plate through the lower pin shaft, and the upper pin shaft and the upper end plate are of a structure capable of moving relatively; the friction plate abuts against the lower end plate, and the distance between the friction plate and the lower pin shaft is larger than that between the upper pin shaft and the lower pin shaft. Obviously, according to the scheme, the number of components is small, the structure is simple, according to the synergistic friction damper, an internal lever synergistic system is formed through combination of the two pin shafts and the rotating plate, displacement of the damper in the working state is amplified, and the energy dissipation capacity of the damper is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, in particular to a friction damper with enhanced efficiency. Background Art

[0002] Friction dampers have the characteristics of reliable friction material performance, excellent energy dissipation capacity, relatively stable sliding friction, and clear structural mechanism. They are one of the most commonly used shock absorbers.

[0003] The friction damper is a displacement damper, and its energy consumption in working state is positively correlated with the displacement of the damper. However, most friction dampers today are difficult to fully play their role when only a small deformation occurs in the engineering structure, and their energy consumption capacity is poor. Utility Model Content

[0004] The utility model aims to provide a high-efficiency friction damper to solve the problem of poor energy dissipation capacity of the existing friction damper.

[0005] In order to solve the above technical problems, the utility model provides an enhanced friction damper, comprising a rotating plate, an upper end plate and a lower end plate arranged between the two rotating plates, and a friction plate arranged on the surface of the rotating plate facing the lower end plate; an upper pin shaft and a lower pin shaft are connected between the two rotating plates, the two rotating plates are rotatably connected to the upper end plate through the upper pin shaft, and the two rotating plates are rotatably connected to the lower end plate through the lower pin shaft, and the upper pin shaft and the upper end plate are relatively movable structures; the friction plate abuts against the lower end plate, and the distance between the friction plate and the lower pin shaft is greater than the distance between the upper pin shaft and the lower pin shaft.

[0006] In one of the embodiments, a strip slot hole is provided on the upper end plate, the upper pin shaft passes through the strip slot hole, and the radial dimension of the upper pin shaft is consistent with the width dimension of the strip slot hole; a pin hole is provided on the lower end plate, the lower pin shaft passes through the pin hole, and the radial dimension of the lower pin shaft is consistent with the radial dimension of the pin hole.

[0007] In one of the embodiments, a pre-tightening bolt is provided on the rotating plate, the pre-tightening bolt passes through the rotating plate and is connected to the friction plate, and a spring is compressed between the pre-tightening bolt and the rotating plate.

[0008] In one of the embodiments, an arc-shaped through groove is provided on the lower end plate, and the pre-tightening bolt passes through the friction plate and is slidably installed in the arc-shaped through groove.

[0009] In one of the embodiments, the pre-tightening bolt passes through the arc-shaped through groove to connect the two rotating plates; the spring is compressed between the bolt head and the opposite rotating plate at one end of the pre-tightening bolt; and a pre-tightening nut is connected to the other end of the pre-tightening bolt so that the spring is also compressed between the pre-tightening nut and the opposite rotating plate.

[0010] In one embodiment, a gasket is provided between the bolt head of the pre-tightening bolt and the spring, and between the pre-tightening nut and the spring.

[0011] In one embodiment, the spring is a disc spring.

[0012] In one of the embodiments, the plurality of arc-shaped through grooves are arranged in the form of a circle with the position of the lower pin shaft as the center, and the pre-tightening bolts pass through the plurality of arc-shaped through grooves.

[0013] In one of the embodiments, a first through hole is provided on the rotating plate, and the aperture of the first through hole is consistent with the radial dimension of the pre-tightening bolt; a second through hole is provided on the friction plate, and the aperture of the second through hole is larger than the radial dimension of the pre-tightening bolt; the pre-tightening bolt passes through the first through hole and the second through hole.

[0014] In one of the embodiments, the geometric dimensions of the friction plate are smaller than those of the rotating plate, so that the friction plate is placed within the coverage of the rotating plate.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model has a small number of components and a simple structure. The enhanced friction damper forms an internal lever enhanced system through the combination of two pins and a rotating plate, which amplifies the displacement of the damper in a working state and significantly improves the energy consumption capacity of the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A side view schematic diagram of the structure;

[0020] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of part A;

[0021] Figure 4 yes Figure 1 Schematic diagram of the upper end plate structure;

[0022] Figure 5 yes Figure 1 Schematic diagram of the lower end plate structure;

[0023] Figure 6 yes Figure 1 Schematic diagram of the rotating plate structure;

[0024] Figure 7 yes Figure 1 Schematic diagram of the friction plate structure.

[0025] The reference numerals are as follows:

[0026] 10. rotating plate; 11. first through hole;

[0027] 20. upper end plate; 21. strip slot;

[0028] 30. lower end plate; 31. pin hole; 32. arc-shaped through groove;

[0029] 40. friction plate; 41. second through hole;

[0030] 51, upper pin; 52, lower pin;

[0031] 60. Pre-tightening bolt; 61. Spring; 62. Gasket. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] The utility model provides a friction damper, which can be implemented as follows: Figures 1 to 7 As shown, it includes a rotating plate 10 , an upper end plate 20 and a lower end plate 30 disposed between the two rotating plates 10 , and a friction plate 40 disposed on the surface of the rotating plate 10 facing the lower end plate 30 .

[0034] The specific configuration of the rotating plate 10 is as follows: Figure 1 and Figure 6 As shown, an upper pin shaft 51 and a lower pin shaft 52 are connected between the two rotating plates 10. The two rotating plates 10 are rotatably connected to the upper end plate 20 through the upper pin shaft 51, and the two rotating plates 10 are rotatably connected to the lower end plate 30 through the lower pin shaft 52, and the upper pin shaft 51 and the upper end plate 20 are relatively movable structures.

[0035] Among them, in order to realize the relative movement between the upper pin shaft 51 and the upper end plate 20, this embodiment is provided with a strip slot hole 21 on the upper end plate 20, and the upper pin shaft 51 passes through the strip slot hole 21, and the radial dimension of the upper pin shaft 51 is consistent with the width dimension of the strip slot hole 21, so that the upper pin shaft 51 can move along the length direction of the strip slot hole 21, thereby changing the distance between the upper end plate 20 and the lower end plate 30; and the lower end plate 30 is provided with a pin hole 31, and the lower pin shaft 52 passes through the pin hole 31, and the radial dimension of the lower pin shaft 52 is consistent with the radial dimension of the pin hole 31, thereby ensuring the installation stability between the rotating plate 10 and the lower end plate 30.

[0036] The friction plate 40 is specifically arranged as follows: Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the friction plate 40 can be made of an inorganic aramid composite material or a resin-based composite material, and its geometric dimensions are smaller than those of the rotating plate 10, so that the friction plate 40 is placed within the coverage of the rotating plate 10, thereby avoiding damage to the friction plate 40 during a collision.

[0037] At this time, the friction plate 40 is in contact with the lower end plate 30, and the distance between the lower end of the friction plate 40 and the lower pin shaft 52 is greater than the distance between the upper pin shaft 51 and the lower pin shaft 52. A lever can be formed with the lower pin shaft 52 as a fixed point, so that the enhanced friction damper constitutes an internal lever enhancement system through the combination of two pin shafts and the rotating plate 10.

[0038] Furthermore, Figures 1 to 7 As shown, this embodiment further provides a pre-tightening bolt 60 on the rotating plate 10, the pre-tightening bolt 60 passes through the rotating plate 10 and is connected to the friction plate 40, and a spring 61 is compressed between the pre-tightening bolt 60 and the rotating plate 10 to reduce the pre-pressure loss; it should be pointed out that there are many choices for the spring 61, and this embodiment preferably sets the spring 61 as a disc spring.

[0039] Specifically, in order to achieve the positioning and installation of the pre-tightening bolt 60, this embodiment is provided with an arc-shaped through groove 32 on the lower end plate 30. The pre-tightening bolt 60 passes through the friction plate 40 and is slidably installed in the arc-shaped through groove 32, so that when the rotating plate 10 rotates, the pre-tightening bolt 60 can slide in the arc-shaped through groove 32; and this embodiment also provides a pre-tightening bolt 60 passing through the arc-shaped through groove 32 to connect the two rotating plates 10, and one end of the pre-tightening bolt 60 is compressed with a spring 61 between its bolt head and the relative rotating plate 10, and the other end of the pre-tightening bolt 60 is connected to a pre-tightening nut, so that the spring 61 is also compressed between the pre-tightening nut and the relative rotating plate 10, thereby ensuring that the pre-pressure loss at the two rotating plates 10 can be reduced.

[0040] It should be noted that there is no limit to the number of the arc-shaped through grooves 32. It is only necessary to ensure that the multiple arc-shaped through grooves 32 are arranged in a circle with the position of the lower pin 52 as the center, and that the pre-tightening bolts 60 pass through the multiple arc-shaped through grooves 32.

[0041] At this time, a first through hole 11 can be provided on the rotating plate 10, and the hole diameter of the first through hole 11 is consistent with the radial dimension of the pre-tightening bolt 60, which can effectively prevent slippage between the pre-tightening bolt 60 and the rotating plate 10; and a second through hole 41 is provided on the friction plate 40, and the hole diameter of the second through hole 41 is larger than the radial dimension of the pre-tightening bolt 60, so that the pre-tightening bolt 60 can pass through the first through hole 11 and the second through hole 41, thereby avoiding compression damage to the friction plate 40 during the sliding process of the pre-tightening bolt 60.

[0042] In addition, this embodiment further provides washers 62 between the bolt head of the pre-tightening bolt 60 and the spring 61 , and between the pre-tightening nut and the spring 61 , thereby increasing the force-bearing area between the components.

[0043] In order to better explain the working principle of the utility model, a specific example will be given below, as follows:

[0044] Under the action of an earthquake, the relative deformation between the upper end plate 20 and the lower end plate 30 drives the rotating plate 10 to generate frictional rotation energy consumption, and the rotating plate 10 drives the friction plate 40 to rotate around the lower pin shaft. The distance between the upper pin shaft and the lower pin shaft and the distance between the friction plate 40 and the lower pin shaft are fixed. A lever can be formed with the lower pin shaft as a fixed point. Since the distance from the end of the friction plate 40 away from the lower pin shaft to the lower pin shaft is greater than the distance from the upper pin shaft to the lower pin shaft, the rotational displacement of the friction plate 40 is greater, that is, the rotational displacement of the friction plate 40 is amplified by the lever principle, thereby significantly improving the energy consumption capacity of the damper.

[0045] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A friction damper, characterized in that: It comprises a rotating plate, an upper end plate and a lower end plate arranged between the two rotating plates, and a friction plate arranged on the surface of the rotating plate facing the lower end plate; An upper pin shaft and a lower pin shaft are connected between the two rotating plates, the two rotating plates are rotatably connected to the upper end plate through the upper pin shaft, and the two rotating plates are rotatably connected to the lower end plate through the lower pin shaft, and the upper pin shaft and the upper end plate are relatively movable structures; The friction plate is in contact with the lower end plate, and the distance between the friction plate and the lower pin shaft is greater than the distance between the upper pin shaft and the lower pin shaft.

2. The synergistic friction damper according to claim 1, characterized in that: The upper end plate is provided with a strip slot hole, the upper pin shaft passes through the strip slot hole, and the radial dimension of the upper pin shaft is consistent with the width dimension of the strip slot hole; The lower end plate is provided with a pin hole, the lower pin shaft passes through the pin hole, and the radial dimension of the lower pin shaft is consistent with the radial dimension of the pin hole.

3. The synergistic friction damper according to claim 1, characterized in that: The rotating plate is provided with a pre-tightening bolt, the pre-tightening bolt passes through the rotating plate and is connected to the friction plate, and a spring is compressed between the pre-tightening bolt and the rotating plate.

4. The synergistic friction damper according to claim 3, characterized in that: The lower end plate is provided with an arc-shaped through groove, and the pre-tightening bolt passes through the friction plate and is slidably installed in the arc-shaped through groove.

5. The synergistic friction damper according to claim 4, characterized in that: The pre-tightening bolt passes through the arc-shaped through slot to connect the two rotating plates; The spring is compressed between the bolt head and the opposite rotating plate at one end of the pre-tightening bolt; The other end of the pre-tightening bolt is connected with a pre-tightening nut, so that the spring is also compressed between the pre-tightening nut and the opposite rotating plate.

6. The synergistic friction damper according to claim 5, characterized in that: Gaskets are arranged between the bolt head of the pre-tightening bolt and the spring, and between the pre-tightening nut and the spring.

7. The synergistic friction damper according to claim 5, characterized in that: The spring is a disc spring.

8. The synergistic friction damper according to claim 4, characterized in that: The plurality of arc-shaped through grooves are arranged in the form of a circle with the position of the lower pin shaft as the center, and the pre-tightening bolts pass through the plurality of arc-shaped through grooves.

9. The synergistic friction damper according to claim 4, characterized in that: The rotating plate is provided with a first through hole, and the diameter of the first through hole is consistent with the radial size of the pre-tightening bolt; The friction plate is provided with a second through hole, and the diameter of the second through hole is larger than the radial dimension of the pre-tightening bolt; The pre-tightening bolt passes through the first through hole and the second through hole.

10. The synergistic friction damper according to claim 1, characterized in that: The geometric dimensions of the friction plate are smaller than those of the rotating plate, so that the friction plate is placed within the coverage of the rotating plate.

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