Symmetrical high-performance viscoelastic damper

Abstract

The invention belongs to the technical field of dampers, and discloses a symmetrical high-performance viscoelastic damper which comprises two supporting plates, through holes are formed in the supporting plates, and the two supporting plates are connected through a pre-tightening connecting piece; a connecting plate is arranged between the two supporting plates, a plurality of groups of viscoelastic materials are arranged between the connecting plate and the supporting plates, the loss factor of the viscoelastic materials is not less than 0.2, the viscoelastic materials are one of rubber or polyurethane, and the connecting plate and the viscoelastic materials are distributed in a symmetrical structure. According to the invention, a symmetric structure design and a high-performance viscoelastic material (the loss factor is greater than or equal to 0.2) are adopted, so that the energy-dissipating capacity of the damper is greatly enhanced and is more than two times that of a common viscoelastic damper, which means that the damper can absorb and dissipate more energy under the same vibration or impact condition, and the energy-dissipating capacity of the damper is greatly improved. Therefore, vibration and displacement of the structure are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the field of dampers, and more particularly to a symmetrical high-performance viscoelastic damper. Background Art

[0002] Viscoelastic dampers are a widely used energy dissipation and shock absorption technology in passive control. Under the action of an earthquake, the viscoelastic damper generates mutual displacement between the end plate and the upper and lower sealing plates, thereby driving the high-damping viscoelastic material to deform to dissipate energy, thereby reducing the seismic effect on the main structure. It has good and stable energy dissipation capacity and can also generate deformation energy dissipation under the action of small earthquakes.

[0003] The core component of the viscoelastic damper is the viscoelastic material. The viscoelastic hysteresis curve is full, symmetrical, and stable in shape. It can also produce deformation energy dissipation under small earthquake conditions. It also has the advantages of easy installation, low cost, and excellent performance. However, the energy dissipation capacity of the viscoelastic materials currently developed in China is limited, and generally needs to be used in combination with other energy dissipation components, such as metal energy absorbers, friction dampers, etc. Although this combination can make up for the shortcomings of the viscoelastic material in energy dissipation capacity, it also increases the complexity of the design. Summary of the invention

[0004] The present application aims to at least solve the problem that the viscoelastic materials currently developed in China have limited energy dissipation capacity and generally need to be used in combination with other energy dissipation elements, such as metal energy dissipators, friction dampers, etc. Although this combination can make up for the lack of energy dissipation capacity of viscoelastic materials, it also increases the complexity of the design. To this end, the present application proposes a symmetrical high-performance viscoelastic damper.

[0005] In order to solve the above technical problems, the present invention proposes the following technical solutions: a symmetrical high-performance viscoelastic damper, comprising two supporting plates, the supporting plates are provided with through holes, and the two supporting plates are connected by a pre-tightening connector;

[0006] A connecting plate is provided between the two supporting plates, and multiple groups of viscoelastic materials are provided between the connecting plate and the supporting plates. The loss factor of the viscoelastic material is not less than 0.2. The viscoelastic material is one of rubber or polyurethane. The connecting plate and the viscoelastic material are distributed in a symmetrical structure.

[0007] Preferably, there are at least two groups of connecting plates, and the connecting plates are symmetrically distributed on both sides of the pre-tightening connector.

[0008] Preferably, the opposing surfaces between the connecting plate and the supporting plate each have at least four groups of viscoelastic materials, and the viscoelastic materials are symmetrically distributed on both sides of the pre-tightening connector.

[0009] Preferably, a connecting bolt hole is provided on the outer portion of the connecting plate.

[0010] Preferably, a skeleton plate is provided between two opposite groups of viscoelastic materials.

[0011] Preferably, the skeleton plates are symmetrically distributed on both sides of the pre-tightening connector.

[0012] Preferably, a positioning assembly is installed on the supporting plate, and the positioning assembly is used to lock the position of the pre-tightening connector.

[0013] Preferably, the pre-tightening connecting piece is a pre-tightening bolt, the bottom of which is provided with an end block, the outer surface of which is threadedly sleeved with a nut, the top of the end block abuts against the bottom of the supporting plate below, and the top of the nut abuts against the top of the supporting plate above.

[0014] Preferably, the positioning assembly comprises a positioning plate and a fixing plate, the positioning plate is provided with a positioning groove, and the shape of the positioning groove is adapted to the shape of the nut;

[0015] The fixing plate is fixed on the supporting plate, an adjusting screw is rotatably connected to the fixing plate, a threaded hole is provided on the fixing plate, the end of the adjusting screw passes through the threaded hole and is threadedly connected thereto, and a rotating block is installed at the end of the adjusting screw.

[0016] Preferably, a sliding rod is fixedly connected to the positioning plate, a round hole is provided on the fixing plate, an end of the sliding rod passes through the round hole, and the end of the sliding rod is connected to a limiting sleeve.

[0017] Preferably, a fixing component is also installed on the supporting plate, and a driving component is connected to the fixing component.

[0018] Preferably, the fixing assembly comprises a fixing shaft, the fixing shaft is fixed on the top of the supporting plate, a first gear is rotatably connected to the fixing shaft, two first gears are meshed with each other, a first outer gear ring is fixedly connected to the outer wall of the nut, and the first gear and the first outer gear ring are meshed with each other;

[0019] The outer wall of the nut is sleeved with a mounting sleeve, the circumferential outer wall of the mounting sleeve is fixedly connected to an extension plate, the top of the extension plate is opened with a mounting hole, the inner wall of the mounting hole is fixedly connected to a connecting rod, the outer wall of the connecting rod is sleeved with a spring, the inner wall of the mounting hole is slidably connected to a support block, the end of the connecting rod passes through the support block and is slidably connected to the support block, one end of the spring is fixedly connected to the support block, the other end of the spring is fixedly connected to the inner wall of the extension plate, and the inner wall of the extension plate is fixedly connected to a connecting shaft.

[0020] Preferably, the driving assembly comprises a rotating sleeve, the circumferential outer wall of the rotating sleeve is rotatably connected to the mounting sleeve, the inner wall of the rotating sleeve is slidably connected to the nut, and the circumferential outer wall of the rotating sleeve is fixedly connected to the second outer gear ring.

[0021] Preferably, the driving assembly further comprises a rotating arm, the inner wall of the rotating arm is rotatably connected to a rotating shaft, and the outer wall of the rotating shaft is fixedly connected to a handle;

[0022] The inner wall of the rotating arm is fixedly connected with a docking shaft, and the docking shaft is sleeved on the connecting shaft and slidably connected thereto, the end of the docking shaft is slidably connected with a rotating ring, the circumferential outer wall of the rotating ring is rotatably connected with a supporting ring, the outer wall of the supporting ring is fixedly connected to the supporting block, the outer wall of the rotating ring is fixedly connected with a blocking arm, the end of the rotating ring is fixedly connected with a clamping block, the outer wall of the clamping block is provided with a clamping groove, and the second outer gear ring is clamped and matched with the inner wall of the clamping groove.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. In the present invention, a symmetrical structural design and high-performance viscoelastic materials (loss factor ≥ 0.2) are adopted to greatly enhance the energy dissipation capacity of the damper, which is more than twice that of an ordinary viscoelastic damper. This means that under the same vibration or impact conditions, the damper can absorb and dissipate more energy, thereby more effectively reducing the vibration and displacement of the structure. The symmetrical structural design enables the damper to maintain balanced energy dissipation performance when subjected to force, thereby avoiding structural instability or damage caused by uneven force, which helps to extend the service life of the damper and reduce maintenance costs.

[0025] 2. In the present invention, due to the significant improvement in energy dissipation capacity, the damper performs well in shock absorption. Whether in buildings, bridges or other fields requiring shock absorption, it can effectively reduce the vibration amplitude and frequency and protect the structure from damage.

[0026] 3. In the present invention, since the damper has excellent energy dissipation capacity and shock absorption effect, it can be applied to various types of structures and vibration environments, and can provide effective protection regardless of whether it is a slight earthquake or a strong impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1It is a schematic structural diagram of an embodiment of the present invention;

[0029] Figure 2 A top view of the structure of an embodiment of the present invention;

[0030] Figure 3 It is a structural schematic diagram of another embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the overall structure of a positioning assembly in another embodiment of the present invention;

[0032] Figure 5 It is a schematic diagram of the overall structure of another embodiment of the present invention;

[0033] Figure 6 It is a schematic diagram of the overall structure of a fixing assembly in another embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the installation structure of a support block in another embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the overall structure of a driving assembly in another embodiment of the present invention;

[0036] Fig. 9 It is a schematic diagram of the installation structure of the rotating ring in another embodiment of the present invention.

[0037] Description of the numbers in the figure:

[0038] 1. Support plate; 2. Connecting plate; 3. Viscoelastic material; 4. Frame plate; 5. Pre-tightening connector; 501. End block; 502. Nut; 6. Connecting bolt hole; 7. Positioning assembly; 701. Positioning plate; 702. Positioning groove; 703. Fixing plate; 704. Adjusting screw; 705. Sliding rod; 706. Limiting sleeve; 8. Fixing assembly; 801. Fixed shaft; 802. First gear; 803. First outer gear ring ; 804, mounting sleeve; 805, extension plate; 806, mounting hole; 807, connecting rod; 808, spring; 809, support block; 810, connecting shaft; 9, driving assembly; 901, rotating sleeve; 902, second outer gear ring; 903, rotating arm; 904, rotating shaft; 905, handle; 906, docking shaft; 907, rotating ring; 908, support ring; 909, stop arm; 910, block; 911, slot. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the implementation mode of the present application clearer, the technical solution in the implementation mode of the present application will be clearly and completely described in combination with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is a part of the implementation mode of the present application, not all the implementation modes. Based on the implementation mode in the present application, all other implementation modes obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. The specific implementation modes of the present invention are described in detail in combination with the drawings in the specification.

[0040] like Figure 1 and Figure 2 As shown, a symmetrical high-performance viscoelastic damper includes two supporting plates 1, each of which is provided with a through hole, and the two supporting plates 1 are connected by a pre-tightening connector 5; a connecting plate 2 is provided between the two supporting plates 1, and multiple groups of viscoelastic materials 3 are provided between the connecting plate 2 and the supporting plates 1, the loss factor of the viscoelastic material 3 is not less than 0.2, the viscoelastic material 3 is one of rubber or polyurethane, and the connecting plate 2 and the viscoelastic material 3 are arranged in a symmetrical structure. The use of high-performance viscoelastic material 3 (loss factor ≥ 0.2) greatly enhances the energy dissipation capacity of the damper, which is more than twice that of an ordinary viscoelastic damper, which means that under the same vibration or impact conditions, the damper can absorb and dissipate more energy, thereby more effectively reducing the vibration and displacement of the structure. The symmetrical structure design enables the damper to maintain balanced energy dissipation performance when subjected to force, avoiding structural instability or damage caused by uneven force, which helps to extend the service life of the damper and reduce maintenance costs.

[0041] The setting of the loss factor of the viscoelastic material 3 being not less than 0.2 is mainly based on the viscoelastic properties and energy dissipation capacity required by the viscoelastic material 3 in a specific application scenario. The loss factor is an important parameter reflecting the viscoelastic properties of the viscoelastic material 3. It represents the tangent value of the phase difference angle between the strain and stress cycles of the viscoelastic material 3 under the action of the alternating force field, and is also equal to the ratio of the loss modulus of the viscoelastic material 3 to the storage modulus.

[0042] The size of the loss factor directly reflects the viscoelastic properties of the viscoelastic material 3. When the loss factor is not less than 0.2, it means that the viscoelastic material 3 has a more significant viscous component, which helps the viscoelastic material 3 to better absorb and dissipate energy when subjected to force. This performance is particularly important in situations where the viscoelastic material 3 is required to have better shock absorption, noise reduction and buffering capabilities.

[0043] The loss factor is closely related to the energy dissipation capacity of the viscoelastic material 3. Under the action of the alternating force field, the viscoelastic material 3 will deform and store energy (elastic energy storage) and dissipate energy (viscous energy dissipation). The larger the loss factor, the higher the proportion of viscous energy dissipation of the viscoelastic material 3, that is, the material can more effectively convert mechanical energy into heat energy and dissipate it during the force process. This energy dissipation mechanism helps to improve the damping effect of the viscoelastic material 3, thereby suppressing the vibration and noise of the structure.

[0044] For viscoelastic materials 3 that need to withstand alternating loads, vibrations and shocks, a loss factor of not less than 0.2 can ensure good performance in practical applications. For example, in the fields of shock absorbers, sound insulation materials, dampers, etc., viscoelastic materials with high loss factors can absorb and dissipate energy more effectively, thereby improving the shock and noise reduction effect and service life of the product.

[0045] like Figure 1 and Figure 2 As shown, in some technical solutions, there are at least two groups of connecting plates 2, and the connecting plates 2 are symmetrically distributed on both sides of the pre-tightening connector 5. The symmetrical distribution of the connecting plates 2 helps to maintain the balance of the structure when subjected to force, and reduce the deformation or instability of the structure caused by uneven force. More connecting plates 2 means that more viscoelastic materials 3 can be used, thereby enhancing the overall energy dissipation capacity of the damper. The symmetrically distributed connecting plates 2 and viscoelastic materials 3 can more effectively absorb and dissipate vibration energy, providing a more uniform shock absorption effect.

[0046] like Figure 1 and Figure 2 As shown, in some technical solutions, the opposite surfaces between the connecting plate 2 and the supporting plate 1 each have at least four groups of viscoelastic materials 3, and the viscoelastic materials 3 are symmetrically distributed on both sides of the pre-tightening connector 5. The symmetrical distribution of the viscoelastic materials 3 ensures that the damper can dissipate energy evenly when subjected to force to avoid local overload. The balanced energy dissipation helps to reduce fatigue damage of the viscoelastic material 3 and extend the service life of the damper. The symmetrical distribution also helps to improve the overall performance of the damper, including shock absorption effect, stability and response speed.

[0047] like Figure 1 and Figure 2 As shown, in some technical solutions, a connecting bolt hole 6 is provided on the outer side of the connecting plate 2. The connecting bolt hole 6 enables the damper to be more easily connected to other structural components, thus simplifying the installation process.

[0048] like Figure 1 and Figure 2As shown, in some technical solutions, a skeleton plate 4 is provided between two relative groups of viscoelastic materials 3. The skeleton plate 4 can limit the deformation range of the viscoelastic material 3 when subjected to stress, and enhance the structural strength inside the damper. The skeleton plates 4 are symmetrically distributed on both sides of the preload connector 5. The symmetrical distribution of the skeleton plates 4 helps to maintain the balance and stability of the damper structure. Similar to the symmetrical distribution of the viscoelastic material 3, the symmetrical distribution of the skeleton plates 4 also helps to dissipate energy evenly. The symmetrical distribution of the skeleton plates 4 can further improve the overall performance of the damper, including the load-bearing capacity, stability and shock absorption effect.

[0049] like Figure 3 and Figure 4 As shown, in some technical solutions, a positioning assembly 7 is installed on the support plate 1, and the positioning assembly 7 is used to lock the position of the pre-tightening connector. The pre-tightening connector is a pre-tightening bolt, and an end block 501 is provided at the bottom of the pre-tightening bolt. A nut 502 is threadedly sleeved on the outer surface of the pre-tightening bolt, and the top of the end block 501 abuts against the bottom of the support plate 1 located below, and the top of the nut 502 abuts against the top of the support plate 1 located above, so that the pre-tightening bolt can provide a stable pre-tightening force between the two support plates, thereby ensuring the overall structural stability and energy consumption performance of the damper. The nut 502 is threadedly sleeved on the outer surface of the pre-tightening bolt, and the size of the pre-tightening force is adjusted by rotating the nut 502. When the nut 502 is tightened to the appropriate position, it will firmly abut against the upper support plate 1, thereby locking the position of the pre-tightening bolt.

[0050] The positioning assembly 7 includes a positioning plate 701 and a fixing plate 703. The positioning plate 701 is provided with a positioning groove 702, and the shape of the positioning groove 702 matches the shape of the nut 502. The fixing plate 703 is fixed on the supporting plate 1. The fixing plate 703 is rotatably connected with an adjusting screw 704. The fixing plate 703 is provided with a threaded hole. The end of the adjusting screw 704 passes through the threaded hole and is threadedly connected thereto. A rotating block is installed at the end of the adjusting screw 704. A sliding rod 705 is fixedly connected to the positioning plate 701. The fixing plate 703 is provided with a round hole. The end of the sliding rod 705 passes through the round hole. The end of the sliding rod 705 is connected to a limiting sleeve 706. Place the positioning plate 701 at the relative position of the nut 502 and ensure that the positioning groove 702 accommodates the nut 502. Then, adjust the position of the positioning plate 701 by rotating the adjusting screw 704 until the positioning groove 702 on the positioning plate 701 fits tightly on the nut 502 and provides additional locking for it. Finally, tighten the limiting sleeve 706, which can ensure that the positioning plate 701 will not move excessively or deviate from the predetermined position.

[0051] like Figures 5 to 9 As shown, in some technical solutions, a fixing component 8 is also installed on the supporting plate 1, and a driving component 9 is connected to the fixing component 8.

[0052] The fixing assembly 8 includes a fixing shaft 801, which is fixed to the top of the supporting plate 1. A first gear 802 is rotatably connected to the fixing shaft 801, and the two first gears 802 are meshed with each other. A first outer gear ring 803 is fixedly connected to the outer wall of the nut 502, and the first gear 802 and the first outer gear ring 803 are meshed with each other.

[0053] The outer wall of the nut 502 is sleeved with a mounting sleeve 804, and the circumferential outer wall of the mounting sleeve 804 is fixedly connected to an extension plate 805, a mounting hole 806 is opened at the top of the extension plate 805, the inner wall of the mounting hole 806 is fixedly connected to a connecting rod 807, the outer wall of the connecting rod 807 is sleeved with a spring 808, the inner wall of the mounting hole 806 is slidably connected to a support block 809, the end of the connecting rod 807 passes through the support block 809 and is slidably connected to it, one end of the spring 808 is fixedly connected to the support block 809, and the other end of the spring 808 is fixedly connected to the inner wall of the extension plate 805, and the inner wall of the extension plate 805 is fixedly connected to a connecting shaft 810.

[0054] The driving assembly 9 includes a rotating sleeve 901 , the outer circumferential wall of the rotating sleeve 901 is rotatably connected to the mounting sleeve 804 , the inner wall of the rotating sleeve 901 is slidably connected to the nut 502 , and the outer circumferential wall of the rotating sleeve 901 is fixedly connected to the second outer gear ring 902 .

[0055] The driving assembly 9 also includes a rotating arm 903, the inner wall of which is rotatably connected to a rotating shaft 904, and the circumferential outer wall of the rotating shaft 904 is fixedly connected to a handle 905; the inner wall of the rotating arm 903 is fixedly connected to a docking shaft 906, which is sleeved on the connecting shaft 810 and slidably connected thereto, and the end of the docking shaft 906 is slidably connected to a rotating ring 907, and the circumferential outer wall of the rotating ring 907 is rotatably connected to a supporting ring 908, and the outer wall of the support ring 908 is fixedly connected to the support block 809, and the outer wall of the rotating ring 907 is fixedly connected to a stop arm 909, and the end of the rotating ring 907 is fixedly connected to a clamping block 910, and the outer wall of the clamping block 910 is provided with a clamping groove 911, and the second outer gear ring 902 is clamped and matched with the inner wall of the clamping groove 911.

[0056] The support plate 1, the frame plate 4, the connection plate 2 and the viscoelastic material 3 are stacked by a vulcanization process, and two pre-tightening bolts are passed through the two support plates 1, and the end block 501 of the pre-tightening bolt abuts against the bottom of the lower support plate 1, and the top of the nut 502 abuts against the top of the upper support plate 1, so that the pre-tightening bolt can provide a stable pre-tightening force between the two support plates;

[0057] The support ring 908 is pushed to drive the support block 809 to slide along the outer wall of the connecting rod 807, so that a sufficient distance is maintained between the rotating ring 907 and the connecting shaft 810. The ends of the two docking shafts 906 are respectively sleeved on the two connecting shafts 810, and the support ring 908 is loosened. Under the elastic force of the spring 808, the rotating ring 907 is sleeved on the ends of the docking shafts 906.

[0058] By holding the two handles 905 at the same time and pulling the rotating arm 903 in opposite directions, the rotating arm 903 drives the rotating ring 907 to move through the docking shaft 906, and drives the blocking arm 909 to move through the rotating ring 907. At this time, the blocking arm 909 is squeezed by the convex teeth on the second outer gear ring 902. At this time, the rotating ring 907 slides along the outer wall of the docking shaft 906. At this time, the clamping block 910 is separated from the second outer gear ring 902. When the rotating ring 907 moves, it drives the supporting block 809 to slide along the outer wall of the connecting rod 807. When the rotating arm 903 rotates until the ends contact each other, at this time, under the elastic force of the spring 808, the clamping block 910 is clamped on the second outer gear ring 902;

[0059] Pull the handle 905 in the opposite direction again to drive the rotating arm 903 to rotate. At this time, the docking shaft 906 drives the second outer gear ring 902 to rotate through the clamping block 910, drives the rotating sleeve 901 to rotate through the second outer gear ring 902, and drives the nut to rotate through the rotating sleeve 901. At this time, the two nuts are respectively screwed in along the thread groove on the pre-tightening bolt. When the two nuts rotate, they can respectively drive the first outer gear ring 803 to rotate. At this time, the two first outer gear rings 803 can respectively drive the first gear 802 to rotate. At the same time, the first outer gear ring 803 can slide along the first gear 802, so that the two first gears 802 rotate synchronously in opposite directions, so that the two nuts can achieve synchronous rotation. When the two rotating arms 903 rotate to be blocked by the fixing plate 703, they stop, thereby ensuring that the two rotating arms 903 rotate at the same angle, so that the two nuts 502 move the same distance along the pre-tightening bolt, thereby ensuring that the tightening force exerted by the two nuts is the same;

[0060] The positioning plate 701 is driven to move by rotating the adjusting screw 704. When the positioning plate 701 moves, the two sliding rods 705 are driven to slide along the inner wall of the fixing plate 703 until the two positioning grooves 702 on the positioning plate 701 are respectively engaged with the nuts 502, so that the nuts 502 can be fixed after tightening to prevent the nuts 502 from loosening when the device is in use.

[0061] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A symmetrical high-performance viscoelastic damper, comprising two supporting plates (1), each of which is provided with a through hole, and the two supporting plates (1) are connected via a pre-tightening connector (5); A connecting plate (2) is provided between the two supporting plates (1), and a plurality of groups of viscoelastic materials (3) are provided between the connecting plate (2) and the supporting plate (1), wherein the loss factor of the viscoelastic material (3) is not less than 0.2, and the connecting plate (2) and the viscoelastic material (3) are arranged in a symmetrical structural distribution.

2. The symmetrical high performance viscoelastic damper according to claim 1, characterized in that: There are at least two groups of connecting plates (2), and the connecting plates (2) are symmetrically distributed on both sides of the pre-tightening connecting piece (5).

3. The symmetrical high performance viscoelastic damper according to claim 1, characterized in that: The opposing surfaces between the connecting plate (2) and the supporting plate (1) each have at least four groups of viscoelastic materials (3), and the viscoelastic materials (3) are symmetrically distributed on both sides of the pre-tightening connector (5).

4. The symmetrical high performance viscoelastic damper according to claim 1, characterized in that: The connecting plate (2) is provided with a connecting bolt hole (6) at the outer portion thereof.

5. The symmetrical high performance viscoelastic damper according to claim 1, characterized in that: A skeleton plate (4) is provided between two opposing groups of viscoelastic materials (3).

6. The symmetrical high performance viscoelastic damper according to claim 5, characterized in that: The frame plates (4) are symmetrically distributed on both sides of the pre-tightening connector (5).

7. The symmetrical high performance viscoelastic damper according to claim 1, characterized in that: A positioning assembly (7) is installed on the supporting plate (1), and the positioning assembly (7) is used to lock the position of the pre-tightening connector.

8. The symmetrical high performance viscoelastic damper according to claim 7, characterized in that: The pre-tightening connection piece is a pre-tightening bolt, the bottom of which is provided with an end block (501), the outer surface of which is threadedly sleeved with a nut (502), the top of the end block (501) abuts against the bottom of the supporting plate (1) located below, and the top of the nut (502) abuts against the top of the supporting plate (1) located above.

9. The symmetrical high performance viscoelastic damper according to claim 8, characterized in that: The positioning assembly (7) comprises a positioning plate (701) and a fixing plate (703); the positioning plate (701) is provided with a positioning groove (702); the shape of the positioning groove (702) is adapted to the shape of the nut (502); The fixing plate (703) is fixed on the supporting plate (1), and an adjusting screw (704) is rotatably connected to the fixing plate (703). A threaded hole is provided on the fixing plate (703), and the end of the adjusting screw (704) passes through the threaded hole and is threadedly connected thereto, and a rotating block is installed at the end of the adjusting screw (704).

10. The symmetrical high performance viscoelastic damper according to claim 9, characterized in that: The positioning plate (701) is fixedly connected with a sliding rod (705), the fixing plate (703) is provided with a circular hole, the end of the sliding rod (705) passes through the circular hole, and the end of the sliding rod (705) is connected to a limiting sleeve (706).

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