Metal-rotational friction composite damper

Abstract

The utility model discloses a metal-rotational friction composite damper. The metal-rotational friction composite damper comprises a bent metal damper, a rotational friction damper, an upper connecting steel plate, a lower connecting steel plate and a side connecting steel plate, the two side connecting steel plates are fixed on the lower connecting steel plate; the two or more bent metal dampers are symmetrically arranged and located between the two side connecting steel plates, the lower end of each bent metal damper is fixed to the lower connecting steel plate, and the upper end of each bent metal damper is fixedly connected into a whole through the upper connecting steel plate; the more than two rotary friction type dampers are symmetrically positioned on the two sides of the integral structure formed by the bent metal dampers respectively; one end of each rotary friction type damper is connected with the upper ends of the two bent metal dampers through a pin shaft A, and the other end of each rotary friction type damper is connected with one corresponding side connecting steel plate through a pin shaft B; the damper is easy and fast to install, the control effect on structural response under the action of small earthquakes, medium earthquakes and large earthquakes can be achieved, enough damping force is provided, and the occupied space is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy dissipation and shock absorption of civil engineering structures, and in particular relates to a metal-rotational friction composite damper. Background Art

[0002] Traditional structural seismic technology consumes earthquake effects by increasing structural strength and stiffness and adopting a "hard resistance" approach, which has low shock absorption efficiency and is not economical. The new energy dissipation and shock absorption technology refers to a shock absorption method that consumes or absorbs the energy of earthquake effects and reduces the seismic response of the main structure by installing energy dissipation and shock absorption devices in buildings. The energy dissipation and shock absorption technology has a simple structure, good working performance and high energy dissipation efficiency. Currently, commonly used energy dissipation dampers include metal dampers and friction dampers. However, most of the current displacement dampers are designed for small earthquake elasticity and can only dissipate energy under medium and large earthquakes. The energy dissipation mechanism is single and cannot achieve multi-stage energy dissipation. In particular, it cannot meet the multi-level seismic fortification requirements of the structure. In actual engineering applications, the energy dissipation efficiency is low. Due to structural aging and the low seismic fortification standards of many old buildings, many buildings suffer irreversible plastic damage under small earthquakes. Although some scholars have developed metal-friction composite dampers that can achieve multi-stage energy dissipation, they occupy a large space, such as the metal and rotational friction composite damper in patent application number: 202211073138.5. Therefore, it is urgent to develop a composite damper that can achieve energy dissipation under different earthquakes and occupy a small space to serve engineering applications. Utility Model Content

[0003] In view of this, the utility model provides a metal-rotational friction composite damper, which is simple and quick to install, can control the structural response under small, medium and large earthquakes, provide sufficient damping force, and can greatly reduce the occupied space compared with the existing metal rotational friction composite damper.

[0004] The utility model is realized by the following technical solutions:

[0005] A metal-rotational friction composite damper, comprising: a bending metal damper, a rotational friction damper, an upper connecting steel plate, a lower connecting steel plate and a side connecting steel plate;

[0006] The two side connecting steel plates are arranged opposite to each other and are both fixed on the lower connecting steel plate;

[0007] Two or more curved metal dampers are symmetrically arranged and located between two side connecting steel plates, and the lower end of each curved metal damper is fixed to the lower connecting steel plate; the upper end of each curved metal damper is fixedly connected as a whole through the upper connecting steel plate;

[0008] More than two rotational friction dampers are symmetrically located on both sides of the overall structure composed of more than two bending type metal dampers, and the rotational friction dampers and the bending type metal dampers are connected in parallel; one end of each rotational friction damper is connected to the upper ends of the two bending type metal dampers through a pin A, and the other end of each rotational friction damper is connected to a corresponding side connecting steel plate through a pin B.

[0009] Furthermore, the bending type metal damper includes: a group of steel strips that are wide at both ends and narrow in the middle, and an upper end plate and a lower end plate for connection and fixing; a group of steel strips consists of more than two steel strips, each of which has pin holes processed at both ends, and the pin holes at both ends of each steel strip are respectively connected to the upper end plate and the lower end plate through a pin shaft C; wherein the pin holes located at the same end of all the steel strips are installed on the upper end plate or the lower end plate through the same pin shaft C; the upper end plate is fixed on the upper connecting steel plate, and the lower end plate is fixed on the lower connecting steel plate.

[0010] Further, the rotary friction damper comprises: a crank 1 and a crank 2;

[0011] One end of the crank one and one end of the crank two are rotatably connected through a pin shaft D, the other end of the crank one is connected to a corresponding side connecting steel plate through a pin shaft B, and the other end of the crank two is connected to the upper ends of two curved metal dampers through a pin shaft A;

[0012] Among them, the number of crank one and crank two is more than one. When the number of any component of crank one and crank two is more than one, crank one and crank two are cross-stacked, and an annular friction plate is provided on the contact surface between crank one and crank two.

[0013] Furthermore, the initial angles between the crank 1 and the crank 2 and the horizontal plane are both 45°, and the angle between the crank 1 and the crank 2 is 90°.

[0014] Furthermore, the specific connection structure of pin B and pin A is: pin B is fixed to a corresponding side connecting steel plate, the other end of crank one is rotatably connected to pin B, pin A is fixed to the upper ends of two curved metal dampers, and the other end of crank two is rotatably connected to pin A.

[0015] Furthermore, the lower ends of the curved metal dampers are fixed to the lower connecting steel plates by welding; the upper ends of the curved metal dampers are fixed to the upper connecting steel plates by welding; and the two side connecting steel plates are fixed to the lower connecting steel plates by welding.

[0016] Beneficial effects:

[0017] (1) The utility model gives full play to the advantages of the coordinated work of the metal damper and the rotational friction damper. The metal and rotational friction composite damper can effectively realize the phased energy consumption under the action of small earthquakes, medium earthquakes and large earthquakes, meet the multi-level seismic fortification requirements of the structure, efficiently control the acceleration and displacement response of the structure under different earthquakes, meet the seismic fortification requirements of the structure at multiple levels, and compared with the existing metal-rotational friction damper, it greatly reduces the occupied space, improves the space utilization rate, and is convenient to construct.

[0018] (2) The bending metal damper of the utility model is composed of a plurality of steel strips which are wide at both ends and narrow in the middle. The damping of the bending metal damper can be adjusted by flexibly adjusting the number of steel strips according to demand, thereby adjusting the damping value of the metal-rotational friction composite damper.

[0019] (3) The number of crank 1 and crank 2 of the rotary friction damper of the utility model is more than one, and an annular friction plate is provided at the contact surface between crank 1 and crank 2. The number of cranks, cranks and annular friction plates can be flexibly configured, and the damping of the rotary friction damper can be adjusted, thereby adjusting the damping value of the metal-rotational friction composite damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the metal-rotational friction composite damper of the utility model;

[0021] Figure 2 It is a front view of a metal-rotational friction composite damper;

[0022] Figure 3 It is a side view of a curved metal damper;

[0023] Figure 4 It is a front view of a bending type metal damper;

[0024] Figure 5 is a side view of a rotary friction damper;

[0025] Figure 6 It is a front view of a rotary friction damper;

[0026] Among them, 1-bending type metal damper; 2-rotational friction damper; 3-pin A; 6-pin B; 11-pin C; 14-pin D; 4-upper connecting steel plate; 5-lower connecting steel plate; 7-side connecting steel plate; 8-steel plate strip; 9-upper end plate; 10-lower end plate; 12-crank one; 13-crank two; 15-annular friction plate. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0028] This embodiment provides a metal-rotational friction composite damper, see attached Figure 1 and Figure 2 , including: a bending type metal damper 1, a rotational friction damper 2, an upper connecting steel plate 4, a lower connecting steel plate 5 and a side connecting steel plate 7;

[0029] The two side connecting steel plates 7 are arranged opposite to each other and are fixed on the lower connecting steel plate 5 by welding;

[0030] Two or more curved metal dampers 1 are symmetrically arranged and located between two side connecting steel plates 7, and the lower end of each curved metal damper 1 is fixed to the lower connecting steel plate 5 by welding; the upper end of each curved metal damper 1 is welded and fixed to the upper connecting steel plate 4, that is, the upper ends of the two or more curved metal dampers 1 are fixedly connected as a whole through the upper connecting steel plate 4; the upper connecting steel plate 4 and the lower connecting steel plate 5 are arranged in parallel;

[0031] More than two rotational friction dampers 2 are symmetrically located on both sides of the overall structure composed of more than two bending metal dampers 1, and the rotational friction dampers 2 and the bending metal dampers 1 are connected in parallel; one end of each rotational friction damper 2 is connected to the upper ends of the two bending metal dampers 1 through a pin A3, and the other end of each rotational friction damper 2 is connected to a corresponding side connecting steel plate 7 through a pin B6; the number of the bending metal dampers 1 and the rotational friction dampers 2 can be flexibly configured according to needs and arranged symmetrically; this embodiment adopts two bending metal dampers 1 and two rotational friction dampers 2.

[0032] Among them, see Appendix Figure 3 and Figure 4 The bending metal damper 1 comprises: a group of steel strips 8 which are wide at both ends and narrow in the middle, and an upper end plate 9 and a lower end plate 10 for connection and fixing; a group of steel strips 8 is composed of more than two steel strips 8, and the number of the steel strips 8 can be flexibly adjusted according to demand, and pin holes are processed at both ends of each steel strip 8, and the pin holes at both ends of each steel strip 8 are respectively connected to the upper end plate 9 and the lower end plate 10 through a pin shaft C11; wherein the pin holes at the same end of all steel strips 8 are installed on the upper end plate 9 or the lower end plate 10 through the same pin shaft C11; the upper end plate 9 is welded and fixed to the upper connecting steel plate 4, and the lower end plate 10 is welded and fixed to the lower connecting steel plate 7;

[0033] See attached Figure 5 and Figure 6The rotary friction damper 2 comprises: a crank 12 and a crank 2 13, one end of the crank 12 and one end of the crank 2 13 are rotatably connected through a pin D14, the other end of the crank 12 is connected to a corresponding side connecting steel plate 7 through a pin B6, and the other end of the crank 2 13 is connected to the upper ends of the two bending metal dampers 1 through a pin A3; specifically: the pin B6 is fixed to the corresponding side connecting steel plate 7, the other end of the crank 12 is rotatably connected to the pin B6, and the pin A3 is fixed to the upper ends of the two bending metal dampers 1 The other end of the crank 2 13 is connected to the pin A3 for rotation; the initial angles between the crank 12 and the crank 2 13 and the horizontal plane are both 45°, and the angle between the crank 12 and the crank 2 13 is 90°; in this embodiment, the pin A3 and the pin C11 on the upper end plate 9 are the same pin, that is, the pin A3 is a pin with a length greater than the length of the upper connecting steel plate 4, and the pin A3 passes through the upper end plates 9 of the two curved metal dampers 1; the upper end of the steel plate strip 8 and the other end of the crank 2 13 are connected to the pin A3 for rotation;

[0034] Among them, the number of crank 1 12 and crank 2 13 is more than one. When the number of any one of crank 12 and crank 2 13 is more than one, crank 1 12 and crank 2 13 are cross-stacked, and an annular friction plate 15 is provided on the contact surface between crank 1 12 and crank 2 13. The number of crank 1 and crank 2 and annular friction plate 15 can be flexibly configured.

[0035] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A metal-rotational friction composite damper, characterized in that: include: Bending type metal damper, rotational friction damper, upper connecting steel plate, lower connecting steel plate and side connecting steel plate; The two side connecting steel plates are arranged opposite to each other and are both fixed on the lower connecting steel plate; Two or more curved metal dampers are symmetrically arranged and located between two side connecting steel plates, and the lower end of each curved metal damper is fixed to the lower connecting steel plate; the upper end of each curved metal damper is fixedly connected as a whole through the upper connecting steel plate; More than two rotational friction dampers are symmetrically located on both sides of the overall structure composed of more than two bending type metal dampers, and the rotational friction dampers and the bending type metal dampers are connected in parallel; one end of each rotational friction damper is connected to the upper ends of the two bending type metal dampers through a pin A, and the other end of each rotational friction damper is connected to a corresponding side connecting steel plate through a pin B.

2. A metal-rotational friction composite damper as claimed in claim 1, characterized in that: The bending metal damper includes: a group of steel strips that are wide at both ends and narrow in the middle, and an upper end plate and a lower end plate for connection and fixing; a group of steel strips consists of more than two steel strips, each of which has pin holes processed at both ends, and the pin holes at both ends of each steel strip are respectively connected to the upper end plate and the lower end plate through a pin shaft C; wherein the pin holes located at the same end of all steel strips are installed on the upper end plate or the lower end plate through the same pin shaft C; the upper end plate is fixed on the upper connecting steel plate, and the lower end plate is fixed on the lower connecting steel plate.

3. A metal-rotational friction composite damper as claimed in claim 1, characterized in that: The rotary friction damper comprises: a crank 1 and a crank 2; One end of the crank one and one end of the crank two are rotatably connected through a pin shaft D, the other end of the crank one is connected to a corresponding side connecting steel plate through a pin shaft B, and the other end of the crank two is connected to the upper ends of two curved metal dampers through a pin shaft A; There are more than one crank one and more than one crank two, crank one and crank two are cross-stacked, and an annular friction plate is provided on the contact surface between crank one and crank two.

4. A metal-rotational friction composite damper as claimed in claim 3, characterized in that: The initial angles between the crank 1 and the crank 2 and the horizontal plane are both 45°, and the angle between the crank 1 and the crank 2 is 90°.

5. A metal-rotational friction composite damper as claimed in claim 3, characterized in that: The specific connection structure of pin B and pin A is: pin B is fixed on a corresponding side connecting steel plate, the other end of crank one is rotatably connected to pin B, pin A is fixed on the upper ends of two curved metal dampers, and the other end of crank two is rotatably connected to pin A.

6. A metal-rotational friction composite damper according to any one of claims 1 to 5, characterized in that: The lower ends of the curved metal dampers are fixed on the lower connecting steel plates by welding; the upper ends of the curved metal dampers are fixed on the upper connecting steel plates by welding; and the two side connecting steel plates are fixed on the lower connecting steel plates by welding.

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