A symmetrical high-performance viscoelastic damper

Abstract

This invention belongs to the field of damper technology and discloses a symmetrical high-performance viscoelastic damper, comprising two supporting plates with through holes, connected by a pre-tightening connector; a connecting plate is provided between the two supporting plates, and multiple sets of viscoelastic material are disposed between the connecting plate and the supporting plates. The loss factor of the viscoelastic material is not less than 0.2, and the viscoelastic material is either rubber or polyurethane. The connecting plate and the viscoelastic material are symmetrically distributed. The symmetrical structural design and high-performance viscoelastic material (loss factor ≥ 0.2) employed in this invention significantly enhance the energy dissipation capacity of the damper, exceeding that of ordinary viscoelastic dampers by more than twice. This means that under the same vibration or impact conditions, the damper can absorb and dissipate more energy, thereby more effectively reducing structural vibration and displacement.

Description

Technical Field

[0001] This invention relates to the field of dampers, and more specifically, to a symmetrical high-performance viscoelastic damper. Background Technology

[0002] Viscoelastic dampers are a widely used energy dissipation and vibration reduction technology in passive control. Under seismic loading, the viscoelastic damper dissipates energy by causing the end plates and upper and lower sealing plates to move against each other, thereby causing the highly damped viscoelastic material to deform and reduce the seismic load on the main structure. It has good and stable energy dissipation capacity and can also generate deformation energy dissipation under small earthquakes.

[0003] The core component of a viscoelastic damper is a viscoelastic material. The viscoelastic hysteresis curve is full, symmetrical, and stable in shape. It can generate deformation and dissipate energy even under small earthquakes. It also has the advantages of easy installation, low cost, and excellent performance. However, the energy dissipation capacity of viscoelastic materials developed in China is currently limited. They generally need to be used in conjunction with other energy dissipation components, such as metal energy dissipators and friction dampers. Although this combination can make up for the lack of energy dissipation capacity of viscoelastic materials, it also increases the complexity of the design. Summary of the Invention

[0004] This application aims to address the limited energy dissipation capacity of currently developed viscoelastic materials in China, which typically require the use of other energy-dissipating components, such as metal energy dissipators and friction dampers. While this combination can compensate for the energy dissipation shortcomings of viscoelastic materials, it also increases the complexity of the design. Therefore, this application proposes a symmetrical high-performance viscoelastic damper.

[0005] To solve the above-mentioned technical problems, the present invention proposes the following technical solution: a symmetrical high-performance viscoelastic damper, comprising two support plates, wherein the support plates are provided with through holes, and the two support plates are connected by a pre-tightening connector;

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

[0007] Preferably, there are at least two sets 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 sets of viscoelastic materials, and the viscoelastic materials are symmetrically distributed on both sides of the pre-tightening connector.

[0009] Preferably, the connecting plate has connecting bolt holes on the outer side.

[0010] Preferably, a skeleton plate is provided between the two opposing sets of viscoelastic materials.

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

[0012] Preferably, a positioning component is installed on the support plate, the positioning component being used to lock the position of the pre-tightening connector.

[0013] Preferably, the pre-tightening connector is a pre-tightening bolt, the bottom of the pre-tightening bolt is provided with an end block, the outer surface of the pre-tightening bolt is threaded with a nut, the top of the end block abuts against the bottom of the lower support plate, and the top of the nut abuts against the top of the upper support plate.

[0014] Preferably, the positioning component includes a positioning plate and a fixing plate, wherein the positioning plate is provided with a positioning groove, the shape of which is adapted to the shape of the nut;

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

[0016] Preferably, a slide rod is fixedly connected to the positioning plate, the fixing plate has a round hole, the end of the slide rod passes through the round hole, and a limit sleeve is connected to the end of the slide rod.

[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 component includes a fixing shaft, which is fixed to the top of the support plate. A first gear is rotatably connected to the fixing shaft, and two first gears mesh with each other. A first external gear ring is fixedly connected to the outer wall of the nut, and the first gear meshes with the first external gear ring.

[0019] The nut is fitted with an installation sleeve on its outer wall. An extension plate is fixedly connected to the outer circumference of the installation sleeve. An installation hole is opened at the top of the extension plate. A connecting rod is fixedly connected to the inner wall of the installation hole. A spring is fitted on the outer wall of the connecting rod. A support block is slidably connected to the inner wall of the installation hole. The end of the connecting rod passes through the support block and is slidably connected to it. One end of the spring is fixedly connected to the support block, and the other end of the spring is fixedly connected to the inner wall of the extension plate. A connecting shaft is fixedly connected to the inner wall of the extension plate.

[0020] Preferably, the drive assembly includes a rotating sleeve, the outer circumferential 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 a second external gear ring is fixedly connected to the outer circumferential wall of the rotating sleeve.

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

[0022] A docking shaft is fixedly connected to the inner wall of the rotating arm. The docking shaft is sleeved on the connecting shaft and slidably connected to it. A rotating ring is slidably connected to the end of the docking shaft. A support ring is rotatably connected to the outer circumference of the rotating ring. The outer wall of the support ring is fixedly connected to the support block. A stop arm is fixedly connected to the outer wall of the rotating ring. A locking block is fixedly connected to the end of the rotating ring. A locking groove is opened on the outer wall of the locking block. The second outer toothed ring engages with the inner wall of the locking groove.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. In this invention, the use of a symmetrical structural design and high-performance viscoelastic material (loss factor ≥ 0.2) greatly enhances the energy dissipation capacity of the damper, which is more than twice that of ordinary viscoelastic dampers. 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. Furthermore, the symmetrical structural design allows the damper to maintain balanced energy dissipation performance under stress, avoiding structural instability or damage caused by uneven stress. This helps to extend the service life of the damper and reduce maintenance costs.

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

[0026] 3. In this invention, because the damper has excellent energy dissipation capacity and vibration reduction effect, it can be applied to various types of structures and vibration environments, and can provide effective protection for both minor earthquakes and strong impacts. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

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

[0029] Figure 2 This is a top view of an embodiment of the present invention;

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

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

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

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

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

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

[0036] Figure 9 This is a schematic diagram of the mounting structure of the rotating ring in another embodiment of the present invention.

[0037] Explanation of the labels in the diagram:

[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. Slide rod; 706. Limiting sleeve; 8. Fixing assembly; 801. Fixing shaft; 802. First gear; 803. First external gear ring 804. Mounting sleeve; 805. Extension plate; 806. Mounting hole; 807. Connecting rod; 808. Spring; 809. Support block; 810. Connecting shaft; 9. Drive assembly; 901. Rotating sleeve; 902. Second external gear ring; 903. Rotating arm; 904. Rotating shaft; 905. Handle; 906. Connecting shaft; 907. Rotating ring; 908. Support ring; 909. Stop arm; 910. Locking block; 911. Locking groove. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] like Figure 1 and Figure 2 As shown, a symmetrical high-performance viscoelastic damper includes two support plates 1, each with through holes, and connected by a pre-tightening connector 5. A connecting plate 2 is positioned between the two support plates 1, and multiple sets of viscoelastic material 3 are disposed between the connecting plate 2 and the support plates 1. The loss factor of the viscoelastic material 3 is not less than 0.2, and the viscoelastic material 3 is either rubber or polyurethane. The connecting plate 2 and the viscoelastic material 3 are symmetrically distributed. The use of high-performance viscoelastic material 3 (loss factor ≥ 0.2) significantly enhances the energy dissipation capacity of this damper, exceeding that of ordinary viscoelastic dampers by more than twice. This means that under the same vibration or impact conditions, the damper can absorb and dissipate more energy, thereby more effectively reducing structural vibration and displacement. The symmetrical structural design allows the damper to maintain balanced energy dissipation performance under stress, avoiding structural instability or damage caused by uneven stress. This helps extend the service life of the damper and reduce maintenance costs.

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

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

[0043] The loss factor is closely related to the energy dissipation capacity of viscoelastic material 3. Under the action of alternating force field, 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 viscoelastic material 3. That is, the material can more effectively convert mechanical energy into heat energy and dissipate it during the process of being subjected to force. This energy dissipation mechanism helps to improve the damping effect of 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 impacts, a loss factor of not less than 0.2 ensures good performance in practical applications. For example, in fields such as shock absorbers, sound insulation materials, and dampers, viscoelastic materials with high loss factors can more effectively absorb and dissipate energy, thereby improving the product's vibration damping and noise reduction effects and service life.

[0045] like Figure 1 and Figure 2 As shown, in some technical solutions, there are at least two sets of connecting plates 2, which 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 under stress and reduces structural deformation or instability caused by uneven stress. More connecting plates 2 mean that more viscoelastic material 3 can be used, thereby enhancing the overall energy dissipation capacity of the damper. The symmetrically distributed connecting plates 2 and viscoelastic material 3 can more effectively absorb and dissipate vibration energy, providing a more uniform damping effect.

[0046] like Figure 1 and Figure 2 As shown, in some technical solutions, there are at least four sets of viscoelastic materials 3 on each of the opposing surfaces between the connecting plate 2 and the supporting plate 1, 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 under stress, avoiding local overload. The even energy dissipation helps to reduce fatigue damage of the viscoelastic materials 3 and extend the service life of the damper. The symmetrical distribution also helps to improve the overall performance of the damper, including damping effect, stability and response speed.

[0047] like Figure 1 and Figure 2 As shown, in some technical solutions, the connecting plate 2 has connecting bolt holes 6 on the outer side. The connecting bolt holes 6 make it easier for the damper to be connected to other structural components, simplifying the installation process.

[0048] like Figure 1 and Figure 2As shown, in some technical solutions, a skeleton plate 4 is provided between two opposing sets of viscoelastic materials 3. The skeleton plate 4 can limit the deformation range of the viscoelastic material 3 under stress and enhance the internal structural strength of the damper. The skeleton plates 4 are symmetrically distributed on both sides of the pre-tightening 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 load-bearing capacity, stability and vibration reduction effect.

[0049] like Figure 3 and Figure 4 As shown, in some technical solutions, a positioning component 7 is installed on the support plate 1. The positioning component 7 is used to lock the position of the pre-tightening connector. The pre-tightening connector is a pre-tightening bolt. The bottom of the pre-tightening bolt has an end block 501, and a nut 502 is threaded onto the outer surface of the pre-tightening bolt. The top of the end block 501 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. This allows the pre-tightening bolt to provide a stable pre-tightening force between the two support plates, thereby ensuring the overall structural stability and energy dissipation performance of the damper. The nut 502 is threaded onto the outer surface of the pre-tightening bolt, and the magnitude 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 has a positioning groove 702, the shape of which is adapted to the shape of the nut 502. The fixing plate 703 is fixed to the support plate 1. An adjusting screw 704 is rotatably connected to the fixing plate 703. The fixing plate 703 has a threaded hole, and the end of the adjusting screw 704 passes through the threaded hole and is threadedly connected to it. 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 has a round hole, and the end of the sliding rod 705 passes through the round hole. A limit sleeve 706 is connected to the end of the sliding rod 705. Position the positioning plate 701 at the corresponding position of the nut 502, ensuring 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 against the nut 502 and provides additional locking. Finally, tighten the limiting sleeve 706, which ensures that the positioning plate 701 will not move excessively or fall out of the predetermined position.

[0051] like Figures 5-9 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 component 8 includes a fixing shaft 801, which is fixed to the top of the support plate 1. A first gear 802 is rotatably connected to the fixing shaft 801, and the two first gears 802 mesh with each other. A first external gear ring 803 is fixedly connected to the outer wall of the nut 502, and the first gear 802 and the first external gear ring 803 mesh with each other.

[0053] A mounting sleeve 804 is fitted on the outer wall of the nut 502. An extension plate 805 is fixedly connected to the outer circumference of the mounting sleeve 804. A mounting hole 806 is opened at the top of the extension plate 805. A connecting rod 807 is fixedly connected to the inner wall of the mounting hole 806. A spring 808 is fitted on the outer wall of the connecting rod 807. A support block 809 is slidably connected to the inner wall of the mounting hole 806. 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. A connecting shaft 810 is fixedly connected to the inner wall of the extension plate 805.

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

[0055] The drive assembly 9 also includes a rotating arm 903, with a rotating shaft 904 rotatably connected to the inner wall of the rotating arm 903. A handle 905 is fixedly connected to the outer circumference of the rotating shaft 904. A docking shaft 906 is fixedly connected to the inner wall of the rotating arm 903. The docking shaft 906 is sleeved on the connecting shaft 810 and slidably connected to it. A rotating ring 907 is slidably connected to the end of the docking shaft 906. A support ring 908 is rotatably connected to the outer circumference of the rotating ring 907. The outer wall of the support ring 908 is fixedly connected to the support block 809. A stop arm 909 is fixedly connected to the outer wall of the rotating ring 907. A locking block 910 is fixedly connected to the end of the rotating ring 907. A locking groove 911 is opened on the outer wall of the locking block 910. The second outer gear ring 902 is engaged with the inner wall of the locking groove 911.

[0056] The support plate 1, the skeleton plate 4, the connecting plate 2 and the viscoelastic material 3 are stacked together by vulcanization. Two pre-tightening bolts are passed through the two support plates 1. 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] By pushing the support ring 908, the support block 809 slides along the outer wall of the connecting rod 807, so that the rotating ring 907 and the connecting shaft 810 maintain a sufficient distance. By putting the ends of the two docking shafts 906 onto the two connecting shafts 810 respectively, and releasing the support ring 908, under the elastic force of the spring 808, the rotating ring 907 is now put onto the ends of the docking shafts 906.

[0058] By simultaneously gripping the two handles 905 and pulling the rotating arm 903 in opposite directions, the rotating arm 903 drives the rotating ring 907 to move via the docking shaft 906. The rotating ring 907 then drives the stop arm 909 to move. At this time, the stop arm 909 is squeezed by the protruding teeth on the second outer gear ring 902. The rotating ring 907 slides along the outer wall of the docking shaft 906. At this time, the locking block 910 disengages from the second outer gear ring 902. When the rotating ring 907 moves, it drives the support block 809 to slide along the outer wall of the connecting rod 807. When the rotating arm 903 rotates to the point where the ends contact each other, the locking block 910 is locked onto the second outer gear ring 902 under the elastic force of the spring 808.

[0059] Pulling the handle 905 in the opposite direction again causes the rotating arm 903 to rotate. At this time, the docking shaft 906 drives the second external gear ring 902 to rotate through the locking block 910. The second external gear ring 902 drives the rotating sleeve 901 to rotate, and the rotating sleeve 901 drives the nut to rotate. At this time, the two nuts are screwed into the threaded grooves on the pre-tightening bolt. When the two nuts rotate, they can drive the first external gear ring 803 to rotate. At this time, the two first external gear rings 803 can drive the first gear 802 to rotate. At the same time, the first external gear ring 803 can slide along the first gear 802, causing the two first gears 802 to rotate synchronously in opposite directions, so that the two nuts can rotate synchronously. When the two rotating arms 903 rotate to the point of being blocked by the fixing plate 703, they stop, thus 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, thus ensuring that the tightening force applied to the two nuts is the same.

[0060] By rotating the adjusting screw 704, the positioning plate 701 is moved. When the positioning plate 701 moves, it drives the two sliding rods 705 to slide along the inner wall of the fixed plate 703 until the two positioning grooves 702 on the positioning plate 701 are respectively engaged with the nut 502, thereby fixing the tightened nut 502 and preventing the nut 502 from loosening during use.

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

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

Claims

1. A symmetrical high-performance viscoelastic damper, comprising two support plates (1), wherein the support plates (1) are provided with through holes, and the two support plates (1) are connected by a pre-tightening connector (5); A connecting plate (2) is provided between the two supporting plates (1), and multiple sets of viscoelastic materials (3) are provided between the connecting plate (2) and the supporting plate (1). 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 structure. A positioning component (7) is installed on the support plate (1), and the positioning component (7) is used to lock the position of the pre-tightening connector; The pre-tightening connector is a pre-tightening bolt, the bottom of the pre-tightening bolt is provided with an end block (501), and the outer surface of the pre-tightening bolt is threaded with a nut (502). The fixing component (8) includes a fixing shaft (801), which is fixed to the top of the support plate (1). A first gear (802) is rotatably connected to the fixing shaft (801), and the two first gears (802) mesh with each other. A first external gear ring (803) is fixedly connected to the outer wall of the nut (502), and the first gear (802) and the first external gear ring (803) mesh with each other. A mounting sleeve (804) is fitted on the outer wall of the nut (502). An extension plate (805) is fixedly connected to the outer circumference of the mounting sleeve (804). A mounting hole (806) is opened at the top of the extension plate (805). A connecting rod (807) is fixedly connected to the inner wall of the mounting hole (806). A spring (808) is fitted on the outer wall of the connecting rod (807). A support block (809) is slidably connected to the inner wall of the mounting hole (806). 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). The other end of the spring (808) is fixedly connected to the inner wall of the extension plate (805). A connecting shaft (810) is fixedly connected to the inner wall of the extension plate (805). The drive assembly (9) includes a rotating sleeve (901), the outer circumference 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 a second external gear ring (902) is fixedly connected to the outer circumference of the rotating sleeve (901). The drive assembly (9) also includes a rotating arm (903), the inner wall of the rotating arm (903) is rotatably connected to a rotating shaft (904), and the outer circumference 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), the docking shaft (906) is sleeved on the connecting shaft (810) and slidably connected to it, the end of the docking shaft (906) is slidably connected to a rotating ring (907), the outer circumference of the rotating ring (907) is rotatably connected to a support ring (908), the outer wall of the support ring (908) is fixedly connected to a support block (809), the outer wall of the rotating ring (907) is fixedly connected to a stop arm (909), the end of the rotating ring (907) is fixedly connected to a locking block (910), the outer wall of the locking block (910) is provided with a locking groove (911), and the second outer gear ring (902) is engaged with the inner wall of the locking groove (911).

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

3. The symmetrical high-performance viscoelastic damper according to claim 1, characterized in that: The connecting plate (2) and the supporting plate (1) each have at least four sets of viscoelastic materials (3) on their opposite surfaces, 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) has connecting bolt holes (6) on the outer side.

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

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

7. The symmetrical high-performance viscoelastic damper according to claim 6, characterized in that: The top of the end block (501) 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).

8. The symmetrical high-performance viscoelastic damper according to claim 7, characterized in that: The positioning component (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) is adapted to the shape of the nut (502). The fixing plate (703) is fixed on the support plate (1). An adjusting screw (704) is rotatably connected to the fixing plate (703). 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 to it. A rotating block is installed at the end of the adjusting screw (704).

9. The symmetrical high-performance viscoelastic damper according to claim 8, characterized in that: A slide rod (705) is fixedly connected to the positioning plate (701). A round hole is provided on the fixing plate (703). The end of the slide rod (705) passes through the round hole, and a limit sleeve (706) is connected to the end of the slide rod (705).

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