Torsional energy dissipation damper with limiting function

Abstract

The torsional energy dissipation damper with the limiting function comprises torsional pipe assemblies and connecting rod assemblies, the torsional pipe assemblies are arranged at the positions of corresponding external main structures, and each connecting rod assembly comprises an external connecting rod component connected between the corresponding torsional pipe assembly and the corresponding external main structure and a middle connecting rod component connected between the corresponding torsional pipe assembly. The pipe twisting assembly comprises a main pipe twisting part and auxiliary pipe twisting parts, the main pipe twisting part comprises a main twisting pipe and a twisting arm fixedly connected to the end of the main twisting pipe, the auxiliary pipe twisting parts comprise auxiliary twisting pipes and a bending moment resisting center shaft, and the auxiliary twisting pipes are arranged at the two ends of the twisting arm. The torsion arm and the middle connecting rod component are both fixedly connected to the auxiliary torsion tube, the middle of the bending moment resisting center shaft is arranged in the auxiliary torsion tube in a penetrating mode, and the external connecting rod component is rotatably arranged at the end of the bending moment resisting center shaft in a sleeving mode. The damping device has the advantages of improving the damping effect, avoiding structural instability and the like.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction in bridges and buildings, and more particularly to a torsional energy-dissipating damper with a limiting function. Background Technology

[0002] Energy dissipation and vibration reduction technology, as a structural seismic resistance method, refers to the installation of energy-dissipating elements in certain parts or components of a structure to dissipate vibration energy and reduce the structure's seismic response. In practical engineering, dampers are commonly used as energy-dissipating elements. Dampers are divided into velocity-type dampers and displacement-type dampers. Among them, metal dampers are a type of displacement-type damper, which utilizes the plasticity of the metal material after yielding to dissipate energy.

[0003] Metal dampers can be classified into bending yield type, axial yield type, shear yield type, and torsional yield type, among which torsional yield type has advantages over bending and axial yield types, such as uniform stress and better ductility. Existing torsional yield type dampers have multiple rotating nodes and increased total degrees of freedom, making them prone to instability. This means that relative displacement occurs at both ends of the damper, but the torsion tube does not twist, resulting in a loss of energy dissipation function. Furthermore, when existing torsional yield type dampers are used for vibration reduction in large-tonnage structures (such as bridges or buildings with damping forces exceeding 3000 kN), the torsion tube is large, making manufacturing difficult, and the vibration reduction and energy dissipation effect cannot be guaranteed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a torsional energy dissipation damper with a limiting function to improve the damping effect of the damper and avoid structural instability.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this invention is as follows: A torsional energy-dissipating damper with a limiting function includes a torsion tube assembly and a connecting rod assembly. The torsion tube assembly is disposed at a corresponding external main structure. The connecting rod assembly includes an external rod component connecting the torsion tube assembly and the external main structure, and an intermediate connecting rod component connecting the torsion tube assemblies. The torsion tube assembly includes a main torsion tube component and an auxiliary torsion tube component. The main torsion tube component includes a main torsion tube and a torsion arm fixedly connected to the end of the main torsion tube. The auxiliary torsion tube component includes an auxiliary torsion tube and a bending moment center shaft. The auxiliary torsion tube is provided at both ends of the torsion arm, and the torsion arm and the intermediate connecting rod component are both fixedly connected to the auxiliary torsion tube. The middle part of the bending moment center shaft passes through the auxiliary torsion tube, and the external rod component is rotatably sleeved on the end of the bending moment center shaft.

[0006] As a further improvement to the above technical solution: The moment-resisting central shaft is equipped with an energy-loss prevention component to prevent damage to the torsion tube assembly under extreme conditions. The energy-loss prevention component includes a torque transmission section that transmits the torsional force of the torsion tube assembly, a limiting energy-dissipating section that transmits the torsional force of the torsion tube assembly to the connecting rod assembly, and a torsional energy-dissipating section that allows the moment-resisting central shaft to deform when the limiting energy-dissipating section is in action. The torque transmission section is located between the auxiliary torsion tube component and the moment-resisting central shaft, the limiting energy-dissipating section is located between the torsion tube assembly and the intermediate connecting rod component or the torsion tube assembly and the external rod component, and the torsional energy-dissipating section is located on the moment-resisting central shaft.

[0007] The torque transmission section is located in the middle of the bending moment center shaft, the limiting energy dissipation section is located at both ends of the bending moment center shaft, the torsional energy dissipation section is located near the auxiliary torsion tube component of the bending moment center shaft, and the thickness of the torsional energy dissipation section is less than the thickness of other locations on the bending moment center shaft.

[0008] The limiting energy dissipation section includes a circumferential limiting groove, a limiting energy dissipation rod, and a limiting block. The circumferential limiting groove is located at both ends of the bending moment center axis. The limiting energy dissipation rod is circumferentially limited in the circumferential limiting groove. The limiting block is fixedly installed on the external rod component or the intermediate connecting rod component. The limiting block is located on the rotation stroke of the limiting energy dissipation rod. When the limiting energy dissipation rod is not rotating, there is a limiting rotation space between it and the limiting block. The limiting rotation space is less than or equal to the maximum energy dissipation stroke of the main torsion tube component or the auxiliary torsion tube component.

[0009] The torque transmission section includes a torsion tube torsion transmission part with circumferential limiting fit and a central shaft torsion transmission part. The bending moment resisting central shaft includes two mutually inserted and circumferentially limited central shafts. The central shaft torsion transmission part is located on the outer side wall of the insertion position of the limited central shaft. The torsion tube torsion transmission part protrudes from the inner side wall of the auxiliary torsion tube component.

[0010] The length of the torsional energy dissipation section and the torsional torque of the bending moment center axis in the torsional elastic state satisfy the following relationship: in, The torsional torque of the central axis resisting bending moment in a torsional elastic state. The elastic shear modulus of the central axis resisting bending moment. To twist the outer diameter of the energy-consuming section, To reverse the inner diameter of the energy-consuming section, To adjust the torsion angle of the energy-consuming section, The set length for the torsional energy-consuming section.

[0011] The torsion tube assembly consists of two sets. The main torsion tubes of each torsion tube assembly are arranged parallel to each other and perpendicular to the load direction of the structure to be vibration-damped. The plane in which the main torsion tubes are located is arranged parallel to the vibration-damping direction of the structure to be vibration-damped. The auxiliary torsion tubes are parallel to the main torsion tubes.

[0012] Each set of torsion tube assemblies has two torsion arms, which are respectively located at both ends of the main torsion tube; there are two sets of external rod components, each external rod component including two external diagonal tie rods, one end of the two external diagonal tie rods is connected to the same drive shaft connected to the external vibration damping structure, and the other end is located diagonally opposite the torsion arms at both ends of the main torsion tube; there are four sets of intermediate connecting rod components, which are respectively located at the ends of the corresponding torsion arms.

[0013] The external tie rod includes a first U-shaped end, an external rod, and a hinged end that are fixedly connected in sequence. The intermediate connecting rod component includes two second U-shaped ends that are fixedly connected to both ends of the intermediate connecting rod. The first U-shaped end is rotatably sleeved on both ends of the bending moment center shaft, and the second U-shaped end is fixedly sleeved on both ends of the auxiliary torsion tube.

[0014] The auxiliary torsion tube includes a main torsion tube fixing area, a connecting rod fixing area, and two sets of torsion energy dissipation areas. The main torsion tube fixing area is located in the middle of the auxiliary torsion tube, and the main torsion tube is fixedly connected to the main torsion tube fixing area via the torsion arm. The connecting rod fixing areas are located at both ends of the auxiliary torsion tube, and the intermediate connecting rod component is fixedly connected to the connecting rod fixing area. The torsion energy dissipation area is located between the main torsion tube fixing area and the connecting rod fixing area, and the thickness of the torsion energy dissipation area is less than the thickness of the main torsion tube fixing area and the connecting rod fixing area.

[0015] Compared with the prior art, the advantages of the present invention are as follows: This invention significantly improves the damping effect of the damper by combining a main torsion tube component and an auxiliary torsion tube component, with ingenious connection and positioning, while avoiding structural instability and loss of energy dissipation function. Specifically, the invention includes a main torsion tube component and an auxiliary torsion tube component. A torsion arm is fixedly connected to the end of the main torsion tube, and auxiliary torsion tubes are provided at both ends of the torsion arm. The torsion arm and the intermediate connecting rod component are both fixed to the auxiliary torsion tubes. At this time, the main torsion tube component and the intermediate connecting rod component are in a relatively fixed state. When the structure to be damped experiences vibration reduction or the two ends of the damper undergo relative displacement, the main torsion tube component and the intermediate connecting rod component will not experience relative displacement. The total degree of freedom of the damper is reduced, and the overall structural stability is greatly improved, thereby avoiding damper instability and ensuring the realization of the damper's normal energy dissipation function.

[0016] Meanwhile, the auxiliary torsion tube component of this invention includes an auxiliary torsion tube and a bending moment center shaft. The bending moment center shaft supports the auxiliary torsion tube, significantly improving its shear resistance and preventing shear damage during operation. The external rod component transmits translational forces to the bending moment center shaft without restricting relative rotation. The bending moment center shaft then transmits these translational forces to the auxiliary torsion tube, which is sleeved outside the bending moment center shaft. These forces are then applied to both ends of the main torsion tube via torsion arms fixedly connected to the auxiliary torsion tube. In other words, the vibration displacement of the structure to be damped is sequentially transmitted through the external rod component and the auxiliary torsion tube component to the torsion arms at both ends of the main torsion tube component, converting the translational forces of the damping structure into torsional forces in the main torsion tube, thereby achieving torsional energy dissipation of the main torsion tube. Furthermore, auxiliary torsion tubes are provided at both ends of the torsion arms, allowing the main torsion tube component to have multiple auxiliary torsion tubes, which greatly increases the damping energy dissipation effect of the damper.

[0017] As can be seen, the auxiliary torsion tube set in this invention not only improves the overall stiffness, suppresses the damper's instability tendency, and improves the damper's stability and reliability, but also provides additional damping force, effectively reducing the torsional damping torque requirement of the main torsion tube, greatly reducing the production difficulty of the main torsion tube, and its layout is compact, its structure is simple, and it occupies little space. Attached Figure Description

[0018] The invention will now be described in more detail with reference to embodiments and the accompanying drawings. Figure 1 This is a schematic diagram of the torsional energy-dissipating damper with limiting function of the present invention; Figure 2 This is a schematic diagram showing the positions of the torsion tube assembly and the connecting rod assembly of the present invention; Figure 3 This is a front view of the torsional energy-dissipating damper with limiting function of the present invention; Figure 4 yes Figure 3 A sectional view of section AA; Figure 5 yes Figure 3 An enlarged schematic diagram of part B (original state); Figure 6 yes Figure 3 Enlarged schematic diagram of part B (limited position); Figure 7 This is a schematic diagram of the connection relationship of the auxiliary torsion tube component of the present invention; Figure 8 This is an exploded structural diagram of the auxiliary torsion tube component of the present invention.

[0019] The labels in the diagram represent: 1. Torsion tube assembly; 11. Main torsion tube component; 111. Main torsion tube; 112. Torsion arm; 12. Auxiliary torsion tube component; 121. Auxiliary torsion tube; 1211. Main torsion tube fixing area; 1212. Link fixing area; 1213. Torsional energy dissipation area; 122. Bending moment center axis; 1221. Limiting center axis; 2. Link assembly; 21. External rod component; 211. External diagonal tie rod; 2111. First U-shaped end; 2112. 2113. External connecting rod; 212. Hinge end; 22. Drive shaft; 22. Intermediate connecting rod assembly; 221. Intermediate connecting rod; 222. Second U-shaped end; 3. Energy loss prevention assembly; 31. Torque transmission section; 311. Torque tube torque transmission part; 312. Central shaft torque transmission part; 32. Limiting energy consumption section; 321. Circumferential limiting groove; 322. Limiting energy consumption rod; 323. Limiting stop; 324. Limiting rotation space; 33. Torsional energy consumption section. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection of the present invention.

[0021] like Figures 1 to 4 An embodiment of the torsional energy-dissipating damper with limiting function of the present invention is shown, which can be applied to vibration reduction and energy dissipation in structures such as bridges and buildings. In this embodiment, the torsional energy-dissipating damper includes a torsion tube assembly 1 and a connecting rod assembly 2. The torsion tube assembly 1 is located at the corresponding external main structure, which includes the structure to be damped and a fixed structure. For example, when used for bridge vibration reduction, the bridge is the structure to be damped, and the bridge tower is the fixed structure. The connecting rod assembly 2 includes an external connecting rod component 21 and an intermediate connecting rod component 22. The external connecting rod component 21 connects the torsion tube assembly 1 to the structure to be damped and the torsion tube assembly 1 to the fixed structure; the intermediate connecting rod component 22 connects the torsion tube assemblies 1. The torsion tube assembly 1 includes a main torsion tube component 11 and an auxiliary torsion tube component 12. The main torsion tube component 11 includes a main torsion tube 111 and a torsion arm 112 fixedly connected to the end of the main torsion tube 111. The auxiliary torsion tube component 12 includes an auxiliary torsion tube 121 and a bending moment center shaft 122. The auxiliary torsion tube 121 is provided at both ends of the torsion arm 112, and the torsion arm 112 and the intermediate connecting rod component 22 are both fixedly connected to the auxiliary torsion tube 121. The middle part of the bending moment center shaft 122 is inserted through the auxiliary torsion tube 121, and the external connecting rod component 21 is rotatably sleeved on the end of the bending moment center shaft 122.

[0022] This invention, through the combination, ingenious connection, and precise positioning of the main torsion tube component 11 and the auxiliary torsion tube component 12, significantly improves the damping effect of the damper while avoiding structural instability and loss of energy dissipation function. Specifically, the invention includes a main torsion tube component 11 and an auxiliary torsion tube component 12. A torsion arm 112 is fixedly connected to the end of the main torsion tube 111, and auxiliary torsion tubes 121 are provided at both ends of the torsion arm 112. The torsion arm 112 and the intermediate connecting rod component 22 are both fixed to the auxiliary torsion tubes 121. At this time, the main torsion tube component 11 and the intermediate connecting rod component 22 are in a relatively fixed state. When the structure to be damped experiences vibration reduction or the two ends of the damper undergo relative displacement, the main torsion tube component 11 and the intermediate connecting rod component 22 will not experience relative displacement. The total degree of freedom of the damper is reduced, and the overall structural stability is greatly improved, thereby avoiding damper instability and ensuring the realization of the damper's normal energy dissipation function.

[0023] Meanwhile, the auxiliary torsion tube component 12 of the present invention includes an auxiliary torsion tube 121 and a bending moment center shaft 122. The bending moment center shaft 122 supports the auxiliary torsion tube 121, significantly improving the shear resistance of the auxiliary torsion tube 121 and preventing it from being damaged by shear during operation. Furthermore, the external rod component 21 transmits translational force to the bending moment center shaft 122, but does not restrict relative rotation. Then, the bending moment center shaft 122 transmits the translational force to the auxiliary torsion tube 121, which is sleeved outside the bending moment center shaft 122. The force is then applied to both ends of the main torsion tube 111 via the torsion arms 112 fixedly connected to the auxiliary torsion tube 121. That is, the vibration displacement of the structure to be damped is sequentially transmitted through the external rod component 21 and the auxiliary torsion tube component 12 to the torsion arms 112 at both ends of the main torsion tube component 11, thus converting the translational force of the damping structure into the torsional force of the main torsion tube 111, thereby achieving torsional energy dissipation of the main torsion tube 111. Meanwhile, auxiliary torsion tubes 121 are provided at both ends of the torsion arm 112, so that the main torsion tube component 11 can be provided with multiple auxiliary torsion tubes 121, which greatly increases the vibration reduction and energy dissipation effect of the damper.

[0024] As can be seen, the auxiliary torsion tube 121 provided in this invention not only improves the overall stiffness, suppresses the damper instability trend, and improves the stability and reliability of the damper, but also provides additional damping force, effectively reducing the torsional damping torque requirement of the main torsion tube 111, greatly reducing the production difficulty of the main torsion tube 111, and its layout is compact, its structure is simple, and it occupies little space.

[0025] In this embodiment, there are two sets of torsion tube assemblies 1. The main torsion tubes 111 of each torsion tube assembly 1 are parallel to each other, and each torsion tube assembly 1 is arranged perpendicular to the load direction of the structure to be damped. The plane where the main torsion tubes 111 are located is parallel to the damping direction of the structure to be damped. The auxiliary torsion tubes 121 are parallel to the main torsion tubes 111, thereby obtaining a stable and reliable damper structure and ensuring the effective transmission of the load force of the structure to be damped. During normal operation, the two ends of the torsional energy dissipation damper will undergo relative displacement, and the damper will be subjected to tension or compression. At this time, the two main torsion tubes 111 and the eight auxiliary torsion tubes 121 of the two sets of torsion tube assemblies 1 will undergo torsional deformation to generate energy dissipation. In other embodiments, the number of torsion tube assemblies 1 can be set according to the actual situation and is not limited to two sets. For example, it can be set to four sets, six sets, etc. The working principle of multiple sets of torsion tube assemblies 1 is the same.

[0026] Furthermore, each set of torsion tube assembly 1 has two torsion arms 112, which are respectively located at both ends of the main torsion tube 111; there are two sets of external rod components 21, each external rod component 21 including two external diagonal tie rods 211, one end of the two external diagonal tie rods 211 is hinged to the same drive shaft 212, and the drive shafts 212 of the two sets of external rod components 21 are respectively mounted on the connecting lugs of the structure to be damped and the fixed structure. For example, when the bridge is being damped, one end of the damper is connected to the bridge through the drive shaft 212, and the other end of the damper is connected to the bridge tower through the drive shaft 212, so as to achieve an effective and reliable connection between the structure to be damped and the damper.

[0027] Meanwhile, the other ends of the external tie rods 211 are located diagonally opposite to the torsion arms 112 at both ends of the main torsion tube 111. The two external tie rods 211 are arranged at a certain angle. At this time, the two external tie rods 211 are arranged diagonally with the main torsion tube 111 as the center, and the center lines of the two external tie rods 211 are arranged along the load direction of the structure to be damped. This further ensures that the relative translation of the vibration of the structure to be damped is converted into relative rotation. It cleverly utilizes the structural characteristics of spatial antisymmetry, and can simultaneously achieve pure torsional boundary conditions and translational transformation by simplifying the structure. There are four sets of intermediate connecting rod components 22. The four sets of intermediate connecting rod components 22 are located at the ends of the corresponding torsion arms 112. The arrangement of the external tie rods 211 diagonally with the main torsion tube 111 as the center ensures that the four sets of intermediate connecting rod components 22 do not interfere with each other when subjected to force and displacement, thus ensuring the effective operation of the damper.

[0028] Preferably, such as Figure 2 and Figure 4As shown, the external tie rod 211 includes a first U-shaped end 2111, an external rod 2112, and a hinged end 2113, which are fixedly connected in sequence. The intermediate connecting rod component 22 includes two second U-shaped ends 222 of the intermediate connecting rod 221, which are fixedly connected to both ends of the intermediate connecting rod 221. The first U-shaped end 2111 is hinged to both ends of the bending moment center shaft 122, and the second U-shaped ends 222 are fixedly fitted to both ends of the auxiliary torsion tube 121. Its layout is compact, occupies little space, and ensures effective force transmission.

[0029] Preferably, the external tie rod 211 and the corresponding torsion arm 112 are located in the same plane, which makes the forces on both ends of the main torsion tube 111 act in the same plane, so no additional bending moment is generated. At this time, the stress state of the main torsion tube 111 is clear and well-defined, realizing the pure torsion boundary condition.

[0030] Furthermore, such as Figure 7 As shown, the auxiliary torsion tube 121 includes a main torsion tube fixing area 1211, a connecting rod fixing area 1212, and two sets of torsion energy dissipation areas 1213. The main torsion tube fixing area 1211 is located in the middle of the auxiliary torsion tube 121, and the main torsion tube 111 is fixedly connected to the main torsion tube fixing area 1211 via a torsion arm 112. The connecting rod fixing areas 1212 are located at both ends of the auxiliary torsion tube 121, and the intermediate connecting rod component 22 is fixedly connected to the connecting rod fixing area 1212. The torsion energy dissipation area 1213 is located between the main torsion tube fixing area 1211 and the connecting rod fixing area 1212. Furthermore, the thickness of the torsion energy dissipation area 1213 is less than the thickness of the main torsion tube fixing area 1211 and the connecting rod fixing area 1212. At this time, the torsional energy dissipation zone 1213 in the middle of the auxiliary torsion tube 121 rotates under the action of the main torsion tube 111, while the connecting rod fixing zones 1212 at both ends of the auxiliary torsion tube 121 are relatively fixed. At this time, the torsional energy dissipation zone 1213 of the auxiliary torsion tube 121 undergoes plastic deformation and dissipates vibration energy. It has high torsional reliability and excellent energy dissipation effect.

[0031] Existing dampers lack a limiting function when the external main structure displacement exceeds limits under extreme working conditions, making the torsion tube prone to large torsional strain and damage. To further address the above technical problems, such as... Figures 5 to 8As shown, this embodiment further includes an energy dissipation prevention component 3 on the bending moment center shaft 122. The energy dissipation prevention component 3 includes a torque transmission section 31, a limiting energy dissipation section 32, and a torsional energy dissipation section 33. The torque transmission section 31 is located between the auxiliary torsion tube component 12 and the bending moment center shaft 122 to transmit the torsional force of the torsion tube component 1. The limiting energy dissipation section 32 is located between the torsion tube component 1 and the second U-shaped end 222 of the intermediate connecting rod component 22 or between the torsion tube component 1 and the first U-shaped end 2111 of the external rod component 21 to transmit the torsional force of the torsion tube component 1 to the connecting rod component 2, thereby limiting the relative rotation between the torsion tube component 1 and the connecting rod component 2, effectively transmitting and dissipating the force of the torsion tube component 1 in the limit state, and preventing the torsion tube component 1 from being damaged by excessive torsion angle.

[0032] Meanwhile, the torsional energy dissipation section 33 is located on the bending moment center axis 122, so that the bending moment center axis 122 undergoes elastic or plastic deformation when the limiting energy dissipation section 32 is in action. The limiting energy dissipation section 32 generates a limiting force during elastic deformation to restrict large-scale vibration of the structure to be damped and to limit further torsion of the torsion tube assembly 1. At the same time, the limiting energy dissipation section 32 generates a limiting torque far exceeding the damping torque generated by the main torsion tube 111 and the auxiliary torsion tube 121 during small displacement of plastic deformation, forcing the structure to be damped to stop moving further, and further preventing the main torsion tube 111 and the auxiliary torsion tube 121 from being damaged due to excessive torsion angle. This ensures that the damper can generate sufficient limiting and energy dissipation forces when the structure to be damped is at its limit displacement, thus guaranteeing the safety of the structure to be damped. It can be seen that, in addition to improving the shear resistance of the auxiliary torsion tube 121, the bending moment center axis 122 of the present invention further realizes the limiting energy dissipation function of the damper in the limit state.

[0033] like Figure 4 and Figure 7 As shown, the torque transmission section 31 is located in the middle of the bending moment center shaft 122, the limiting energy dissipation section 32 is located at both ends of the bending moment center shaft 122, and the torsional energy dissipation section 33 is located on the bending moment center shaft 122 near the auxiliary torsion tube component 12. This ensures that the force transmitted by the structure to be damped is evenly dissipated, further guaranteeing the damping energy dissipation effect. Simultaneously, the thickness of the torsional energy dissipation section 33 is less than the thickness of other locations on the bending moment center shaft 122, making the torsional energy dissipation section 33 a thin-walled section to ensure effective torsion of the bending moment center shaft 122 and generation of limiting torque. In other embodiments, the positions of the torque transmission section 31, the limiting energy dissipation section 32, and the torsional energy dissipation section 33 on the bending moment center shaft 122 can also be adjusted according to actual conditions.

[0034] Furthermore, the limiting energy dissipation section 32 includes a circumferential limiting groove 321, a limiting energy dissipation rod 322, and a limiting stop 323. The circumferential limiting groove 321 is located at both ends of the bending moment center shaft 122. The limiting energy dissipation rod 322 is circumferentially limited by the circumferential limiting groove 321. The limiting stop 323 is fixedly installed on the external rod component 21 or the intermediate connecting rod component 22. The limiting stop 323 is located on the rotation stroke of the limiting energy dissipation rod 322. When the limiting energy dissipation rod 322 is not rotating, a limiting rotation space 324 is left between it and the limiting stop 323. The limiting rotation space 324 is less than or equal to the maximum energy dissipation stroke of the main torsion tube component 11 or the auxiliary torsion tube component 12. Its structure is simple and compact, and it ensures the effective limiting energy dissipation of the limiting energy dissipation section 32.

[0035] In this embodiment, the torque transmission section 31 includes a circumferentially limited torsion tube torsion transmission part 311 and a central shaft torsion transmission part 312. The bending moment resisting central shaft 122 includes two limiting central shafts 1221, which are interlocked and circumferentially limited. The central shaft torsion transmission part 312 is located on the outer wall of the interlocking position of the limiting central shaft 1221. The torsion tube torsion transmission part 311 protrudes from the inner wall of the auxiliary torsion tube component 12, thereby enabling the torsional force of the torsion tube assembly 1 to be effectively transmitted. In this embodiment, the torsion tube torsion transmission part 311 is a torsion tube boss with a polygonal hole, and the central shaft torsion transmission part 312 is a polygonal mating part, the polygonal mating part corresponding to the shape of the polygonal hole to transmit the torsional force. In other embodiments, the arrangement of the torsion tube torsion transmission part 311 and the central shaft torsion transmission part 312 is only required to ensure the effective transmission of the torsional force, and is not limited here.

[0036] During normal operation, due to the limitation of the torque transmission section 31, the bending moment center shaft 122 inside the auxiliary torsion tube 121 remains relatively stationary with respect to the torsion arm 112, while the torsion arm 112 rotates relative to the first U-shaped end 2111 of the external rod component 21 or the second U-shaped end 222 of the intermediate connecting rod component 22. Therefore, the bending moment center shaft 122 and the limiting energy dissipation rod 322 installed on the bending moment center shaft 122 will rotate relative to the first U-shaped end 2111 and the second U-shaped end 222, respectively. This invention, through the torque transmission section 31, limiting energy dissipation section 32, and torsional energy dissipation section 33 of the anti-loss energy component 3, enables the limiting energy dissipation rod 322 to rotate among several limiting blocks 323 without contacting the damper during normal operation. When the damper's stroke exceeds the limit, the limiting energy dissipation rod 322 contacts the limiting block 323, triggering the limiting function, such as... Figure 6 As shown, at this time, the limit energy dissipation rod 322 is constrained and cannot continue to rotate. Therefore, after the stroke exceeds the limit, with the continuous torsion of the torsion arm 112 and the limiting of the limit energy dissipation rod 322 and the limiting stop 323, the torsion energy dissipation section 33 of the bending moment center axis 122 is torsioned and a limiting torque is generated.

[0037] Preferably, the length of the torsional energy dissipation section 33 and the torsional torque of the bending moment center axis 122 in the torsional elastic state satisfy the following relationship: in, The torsional torque of the bending moment center shaft 122 in a torsional elastic state. The elastic shear modulus of the bending moment center axis 122, To twist the outer diameter of energy-consuming section 33, To twist the inner diameter of energy-consuming section 33, To adjust the torsion angle of the energy-consuming section 33, The set length of the torsional energy dissipation section 33.

[0038] The present invention can accurately determine the setting length, inner diameter and outer diameter of the torsional energy dissipation section 33 based on the torsional torque of the bending moment center shaft 122, thereby better protecting the torsion tube assembly 1 and realizing effective energy dissipation of the structure to be vibration reduced at the extreme position.

[0039] More preferably, the bending moment center shaft 122 can be made of a material with high toughness and high yield strength, such as 20CrMnTi.

[0040] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A torsional energy dissipation damper with a stop function, comprising a torsion tube assembly and a connecting rod assembly, characterized in that, The torsion tube assembly is arranged at a corresponding external main structure, the connecting rod assembly comprises an outer connecting rod component connected between the torsion tube assembly and the external main structure, and an intermediate connecting rod component connected between the torsion tube assemblies, the torsion tube assembly comprises a main torsion tube component and an auxiliary torsion tube component, the main torsion tube component comprises a main torsion tube and a torsion arm fixedly connected to an end of the main torsion tube, the auxiliary torsion tube component comprises an auxiliary torsion tube and a bending moment center shaft, the auxiliary torsion tube is arranged at both ends of the torsion arm, and the torsion arm and the intermediate connecting rod component are fixedly connected to the auxiliary torsion tube, the bending moment center shaft is arranged in the auxiliary torsion tube, and the outer connecting rod component is rotatably sleeved at the end of the bending moment center shaft.

2. The torsional energy dissipation damper with a limiting function according to claim 1, characterized in that, The bending moment center shaft is provided with a damage prevention energy consumption assembly for preventing damage of the torsion tube assembly in a limit state, the damage prevention energy consumption assembly comprises a torque transmission segment for transmitting torsion of the torsion tube assembly, a limiting energy consumption segment for transmitting the torsion of the torsion tube assembly to the connecting rod assembly, and a torsion energy consumption segment for deforming the bending moment center shaft when the limiting energy consumption segment acts, wherein the torque transmission segment is arranged between the auxiliary torsion tube component and the bending moment center shaft, the limiting energy consumption segment is arranged between the torsion tube assembly and the intermediate connecting rod component or between the torsion tube assembly and the outer connecting rod component, and the torsion energy consumption segment is arranged in the bending moment center shaft.

3. The torsional energy dissipation damper with a limiting function according to claim 2, characterized in that, The torque transmission segment is arranged in the middle of the bending moment center shaft, the limiting energy consumption segment is arranged at both ends of the bending moment center shaft, and the torsion energy consumption segment is arranged at a position close to the auxiliary torsion tube component of the bending moment center shaft, and the thickness of the torsion energy consumption segment is smaller than the thickness of other positions of the bending moment center shaft.

4. The torsional energy dissipation damper with a limiting function according to claim 3, characterized in that, The limiting energy consumption segment comprises a circumferential limiting groove, a limiting energy consumption rod and a limiting block, the circumferential limiting groove is arranged at both ends of the bending moment center shaft, the limiting energy consumption rod is circumferentially limited in the circumferential limiting groove, the limiting block is fixedly installed on the outer connecting rod component or the intermediate connecting rod component, the limiting block is arranged on the rotating stroke of the limiting energy consumption rod, and the limiting energy consumption rod and the limiting block leave a limiting rotating space when the limiting energy consumption rod is not rotated, and the limiting rotating space is smaller than or equal to the maximum energy consumption stroke of the main torsion tube component or the auxiliary torsion tube component.

5. The torsional energy dissipation damper with a stop function according to claim 3, wherein, The torque transmission segment comprises a circumferential limiting fitting torsion tube transmission part and a center shaft transmission part, the bending moment center shaft comprises two limiting center shafts which are inserted and circumferentially limited to each other, and the center shaft transmission part is arranged on the outer side wall of the inserted position of the limiting center shaft; and the torsion tube transmission part is protruded on the inner side wall of the auxiliary torsion tube component.

6. The torsional vibration energy-dissipating damper with a limiting function according to any one of claims 2 to 5, characterized in that, The setting length of the torsion energy consumption segment and the torsion torque of the bending moment center shaft in a torsional elastic state satisfy the following relationship: wherein, is a torsional torque of the central axis of the bending resistance moment in a torsionally elastic state, is an elastic shear modulus of the central axis of the bending resistance moment, is an outer diameter of the torsionally energy-dissipating section, is an inner diameter of the torsionally energy-dissipating section, is a torsion angle of the torsionally energy-dissipating section, is a setting length of the torsionally energy-dissipating section.

7. The torsional energy dissipation damper with a limiting function according to any one of claims 1 to 5, characterized in that, The torsion tube assembly is two groups, the main torsion tubes of each torsion tube assembly are parallel to each other and arranged perpendicular to the load direction of the structure to be damped, the plane where the main torsion tubes are arranged is parallel to the damping direction of the structure to be damped; and the auxiliary torsion tube is parallel to the main torsion tube.

8. The torsional energy dissipation damper with a limiting function according to claim 7, wherein each set of the torsional arm of the torsional tube assembly is two, and the two torsional arms are respectively arranged at two ends of the main torsional tube; the outer connecting rod component is two sets, each of the outer connecting rod component comprises two outer connecting diagonal rods, one end of the two outer connecting diagonal rods is connected to the same transmission shaft connected with the external damping structure, and the other end is respectively located at the opposite corner of the torsional arm at two ends of the main torsional tube; the intermediate connecting rod component is four sets, and the four sets of intermediate connecting rod components are respectively located at the end of the corresponding torsional arm.

9. The torsional energy dissipation damper with a limiting function according to claim 8, characterized in that, The outer connecting diagonal rod comprises a first U-shaped end head, an outer connecting rod and a hinged end head which are sequentially fixedly connected, and the intermediate connecting rod component comprises two second U-shaped end heads of the intermediate connecting rod which are fixedly connected at two ends of the intermediate connecting rod; the first U-shaped end head is rotatably sleeved at the two end portions of the bending moment resisting center shaft, and the second U-shaped end head is fixedly sleeved at the two end portions of the auxiliary torsional tube.

10. The torsional energy dissipation damper with a limiting function according to any one of claims 1 to 5, characterized in that, The auxiliary torsional tube comprises a main torsional tube fixing area, a connecting rod fixing area and two sets of torsional energy dissipation areas, wherein the main torsional tube fixing area is arranged at the middle portion of the auxiliary torsional tube, and the main torsional tube is fixedly connected to the main torsional tube fixing area through the torsional arm; the connecting rod fixing area is arranged at the two end portions of the auxiliary torsional tube, and the intermediate connecting rod component is fixedly connected to the connecting rod fixing area; the torsional energy dissipation area is arranged between the main torsional tube fixing area and the connecting rod fixing area, and the thickness of the torsional energy dissipation area is smaller than the thickness of the main torsional tube fixing area and the connecting rod fixing area.

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