Zero-rigidity metal damper

Abstract

The utility model provides a zero-rigidity metal damper, and belongs to the technical field of engineering damping. Comprising a lower fixing assembly, a first pin shaft is rotationally connected to the middle of the lower fixing assembly, a middle force transmission assembly is rotationally connected to the end, away from the lower fixing assembly, of the outer side of the first pin shaft, a second pin shaft is rotationally connected to the top end of the middle force transmission assembly, and upper fixing assemblies are rotationally connected to the two ends of the outer side of the second pin shaft; by arranging the middle force transmission assembly, the second pin shaft and the first pin shaft, when the upper fixing assembly horizontally reciprocates, the second pin shaft at the upper end of the middle force transmission assembly can be driven to do circular motion around the first pin shaft at the lower end, and meanwhile the circular motion of the middle force transmission assembly can drive the metal damping assembly to horizontally move; and the upper fixing assembly and the lower fixing assembly generate relative deformation and damping force, so that the device can stably provide constant damping force, and the buffering and damping effects of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering damping technology field especially relates to a zero stiffness metal damper. BACKGROUND

[0002] The damper is widely used in engineering damping technology field, can play a role in structure vibration, wind vibration, human-induced vibration and many scenes, and the damper is mainly viscous damper, metal damper, eddy current damper, friction damper according to the material providing damping force, and the zero stiffness metal damper is one of them.

[0003] The existing zero stiffness metal damper is through ingenious structure design, utilizes negative stiffness mechanism to offset positive stiffness, thereby realizes the stiffness close to zero in dynamic response, but it often can not only provide damping effect to structure, and will synchronously produce certain stiffness, increases the internal force of connected component when designing structure, makes the practicality of device low.

[0004] Therefore, the utility model provides a zero stiffness metal damper to meet the needs. UTILITY MODEL CONTENTS

[0005] The utility model discloses a zero stiffness metal damper to solve the problem in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a zero stiffness metal damper, including lower fixed assembly, the middle part of lower fixed assembly is rotatably connected with one pin shaft, the outer side of one pin shaft is rotatably connected with intermediate force transmission assembly away from the one end of lower fixed assembly, the top of intermediate force transmission assembly is rotatably connected with second pin shaft, and the outer side of second pin shaft is rotatably connected with upper fixed assembly at both ends, and the top of upper fixed assembly is fixedly connected with same upper embedded plate, the bottom of intermediate force transmission assembly is fixedly connected with metal damping assembly, and the both sides of metal damping assembly are rotatably connected with third pin shaft, and the outer side of third pin shaft is rotatably connected to the inner side of lower fixed assembly away from metal damping assembly, and the bottom of lower fixed assembly is fixedly connected with lower embedded plate.

[0007] As a preferred implementation, the outer side between lower fixed assembly and intermediate force transmission assembly of one pin shaft is fixedly connected with one gasket, and the both sides of one gasket are respectively in close contact with lower fixed assembly and intermediate force transmission assembly.

[0008] As a preferred implementation, the outer side between two upper fixed assemblies and intermediate force transmission assembly of second pin shaft is fixedly connected with second gasket, and the both sides of second gasket are respectively in close contact with corresponding upper fixed assembly and intermediate force transmission assembly.

[0009] As a preferred implementation, the upper pre-embedded plate is located directly above the lower pre-embedded plate, and the width of the upper pre-embedded plate is consistent with the width of the lower pre-embedded plate.

[0010] As a preferred implementation, the height of the metal damping assembly is lower than the first pin shaft, and the length of the metal damping assembly on both sides of the intermediate force transmission assembly is consistent.

[0011] As a preferred implementation, the two third pin shafts are respectively located on both sides of the lower fixed assembly.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model discloses, through setting up intermediate force transmission assembly, second pin shaft and first pin shaft, when the upper fixed assembly horizontal reciprocating motion, will drive the upper end of intermediate force transmission assembly's second pin shaft around the lower end's first pin shaft and do the circular movement, and the circular movement of intermediate force transmission assembly will drive the horizontal motion of metal damping assembly, and intermediate force transmission assembly, metal damping assembly and lower fixed assembly are connected, thereby make the upper fixed assembly and lower fixed assembly produce relative deformation and damping force, make the device can stably provide constant damping force, improve the buffering shock-absorbing effect of device.

[0014] The utility model discloses, through setting up third pin shaft and metal damping assembly, because metal damping assembly has pre-applied pre-tension, when intermediate force transmission assembly horizontal motion, the side of metal damping assembly that has pre-applied pre-tension will continue to stretch, and the other side will rebound, and the elastic force increase value provided by the metal damping assembly on both sides is same with the decrease value, then constant horizontal force will be produced, then metal damping assembly can provide constant damping force, and the metal damping assembly on both sides is in the state of stretching all the time and does not return to the initial position, then will not provide additional stiffness to the mechanism, can form the damper of zero stiffness accordingly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a first perspective view of the structure of the zero-stiffness metal damper.

[0016] Fig. 2 It is a second perspective view of the structure of the zero-stiffness metal damper.

[0017] Fig. 3 It is a side view of the zero-stiffness metal damper.

[0018] In the drawing: 1, lower fixed assembly;2, first pin shaft;3, intermediate force transmission assembly;4, second pin shaft;5, upper fixed assembly;6, upper pre-embedded plate;7, metal damping assembly;8, third pin shaft;9, lower pre-embedded plate;10, first gasket;11, second gasket. DETAILED DESCRIPTION

[0019] The utility model is further described below in combination with the embodiments.

[0020] The following embodiments are used to illustrate the utility model, but cannot be used to limit the protection scope of the utility model; the conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements of the method of the utility model under the concept premise of the utility model all belong to the range required to be protected by the utility model.

[0021] Please refer to Figs. 1-3 The utility model provides a kind of zero stiffness metal damper, including lower fixed component 1, the middle part of lower fixed component 1 is rotatably connected with one pin shaft 2, one pin shaft 2 outer side is rotatably connected with intermediate force transmission component 3 away from lower fixed component 1, the top of intermediate force transmission component 3 is rotatably connected with two pin shaft 4, the both ends of two pin shaft 4 outer side are rotatably connected with upper fixed component 5, and the top of upper fixed component 5 is fixedly connected with same upper embedded plate 6, two pin shaft 4 is located between the outer side of two upper fixed components 5 and intermediate force transmission component 3 and is fixedly connected with two gaskets 11, and the both sides of two gaskets 11 are in close contact with corresponding upper fixed component 5 and intermediate force transmission component 3 respectively, and the bottom of lower fixed component 1 is fixedly connected with lower embedded plate 9.

[0022] damper is installed in working position by upper embedded plate 6 and lower embedded plate 9, when structure is subjected to external force, upper embedded plate 6 drives upper fixed component 5 horizontal reciprocating motion, drives two pin shaft 4 to do circular motion around one pin shaft 2, and drives intermediate force transmission component 3.

[0023] Please refer to Figs. 1-3 Metal damping component 7 is fixedly connected on the both sides of the bottom of intermediate force transmission component 3, and the end away from each other of two metal damping components 7 is rotatably connected with three pin shaft 8, and the end away from metal damping component 7 of three pin shaft 8 outer side is rotatably connected to the inner side of lower fixed component 1, one gasket 10 is fixedly connected on the outer side of one pin shaft 2 between lower fixed component 1 and intermediate force transmission component 3, and the both sides of one gasket 10 are in close contact with lower fixed component 1 and intermediate force transmission component 3 respectively, upper embedded plate 6 is located directly above lower embedded plate 9, and the width of upper embedded plate 6 is consistent with the width of lower embedded plate 9, the height of metal damping component 7 is lower than one pin shaft 2, the length of two metal damping components 7 is consistent, and two three pin shaft 8 are located on the both sides of lower fixed component 1 respectively.

[0024] And then intermediate force transmission component 3 drives the horizontal motion of the metal damping component 7 on both sides, and the side of metal damping component 7 with pre-tension will continue to stretch, and the other side will rebound, to provide constant damping force for shock absorption and buffering.

[0025] Through the circumferential movement of the intermediate force transmission assembly 3 and the horizontal movement of the metal damping assembly 7, the device can stably provide a constant damping force, and the stable damping force output enables the device to maintain a high-efficiency buffering and damping effect under different working conditions; the rebound of the metal damping assembly 7 can effectively dissipate vibration energy and reduce the vibration response of the structure; the efficient energy dissipation mechanism enables the device to significantly reduce the dynamic response of the structure under the action of external forces such as earthquakes and wind vibration; through reasonable design of the pin shaft and the gasket, the device can maintain good stability during the dynamic process, which is crucial to ensure the reliability and durability of the device under complex working conditions, so that the device can maintain a certain energy dissipation capacity after multiple vibrations and does not need to be frequently replaced; the reusable feature enables the device to have high economy and practicability in long-term use.

[0026] When the intermediate force transmission assembly 3 moves horizontally, one side of the metal damping assembly 7 will continue to stretch, and the other side will rebound accordingly; the stretching and rebounding process is caused by the elasticity and pre-tension of the metal damping assembly 7; since the increase and decrease of the elastic force of the metal damping assembly 7 on both sides are the same, the change of the elastic force on both sides cancels each other out during the dynamic process, and finally a constant horizontal force is generated, which is the damping force provided by the damper; since the metal damping assembly 7 on both sides is always in a stretched state and does not return to the initial position during the dynamic process, the device does not provide additional stiffness to the entire mechanism, so that the damper exhibits a stiffness characteristic close to zero in the dynamic response, that is, the damper does not exert additional stiffness constraints on the structure during vibration, thereby effectively isolating low-frequency vibration and reducing the vibration response of the structure.

[0027] The working principle and use process of the utility model: the damper is installed at the working position through the upper embedded plate 6 and the lower embedded plate 9; when the structure is subjected to external force, the upper fixed assembly 5 is driven to move horizontally reciprocatingly, the second pin shaft 4 is driven to move circumferentially around the first pin shaft 2, and the intermediate force transmission assembly 3 is driven, and then the intermediate force transmission assembly 3 drives the metal damping assemblies 7 on both sides to move horizontally, one side of the metal damping assembly 7 with pre-tension will continue to stretch, the other side will rebound, and a constant damping force is provided to damp and buffer.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principle of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A zero-stiffness metal damper, comprising a lower fixed assembly (1), characterized in that, The lower fixing component (1) is rotatably connected to a first pin (2) at its middle part. The outer end of the first pin (2) away from the lower fixing component (1) is rotatably connected to an intermediate force transmission component (3). The top of the intermediate force transmission component (3) is rotatably connected to a second pin (4). Both ends of the outer side of the second pin (4) are rotatably connected to an upper fixing component (5). The top of the upper fixing component (5) is fixedly connected to the same upper embedded plate (6). The two sides of the bottom end of the intermediate force transmission component (3) are fixedly connected to metal damping components (7). The ends of the two metal damping components (7) away from each other are rotatably connected to a third pin (8). The outer end of the third pin (8) away from the metal damping component (7) is rotatably connected to the inner side of the lower fixing component (1). The bottom of the lower fixing component (1) is fixedly connected to a lower embedded plate (9).

2. The zero-stiffness metal damper according to claim 1, characterized in that, The first pin (2) is fixedly connected to a first gasket (10) on the outside between the lower fixing component (1) and the intermediate force transmission component (3). The two sides of the first gasket (10) are in close contact with the lower fixing component (1) and the intermediate force transmission component (3), respectively.

3. A zero-stiffness metal damper according to claim 1, characterized in that, The second pin (4) is located between the two upper fixing components (5) and the middle force transmission component (3) and is fixedly connected with a second gasket (11). The two sides of the second gasket (11) are in close contact with the corresponding upper fixing component (5) and the middle force transmission component (3).

4. A zero-stiffness metal damper according to claim 1, characterized in that, The upper embedded plate (6) is located directly above the lower embedded plate (9), and the width of the upper embedded plate (6) is the same as the width of the lower embedded plate (9).

5. A zero-stiffness metal damper according to claim 1, characterized in that, The height of the metal damping component (7) is lower than that of the first pin (2), and the lengths of the two metal damping components (7) are the same.

6. A zero-stiffness metal damper according to claim 1, characterized in that, The two No. 3 pins (8) are located on both sides of the lower fixing assembly (1).

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