Support shock-absorbing connecting device of net rack structure

Abstract

The application belongs to the technical field of grid structure, and discloses a support shock absorption connecting device of a grid structure, which comprises a lower support and an upper support, the upper support is used for being connected with the grid structure, the lower support is used for being connected with a lower structure, and further comprises a lower bearing assembly which is fixed to the top of the lower support. The application integrates the load bearing connection function and the shock absorption energy dissipation function in the structural cooperation of the steel ball and the bearing assembly. The steel ball is used as a load bearing connector to transfer the vertical load between the first spherical cavity and the second spherical cavity, and is also used as a motion conversion element to convert the horizontal vibration into rolling motion. The vibration energy is synchronously dissipated by the compression deformation of the shock absorption pad and the end face friction, forming a multi-stage energy dissipation mechanism of the steel ball climbing energy dissipation, the shock absorption pad compression energy dissipation and the end face friction energy dissipation. The collaborative integration of the load bearing connection and the multi-stage shock absorption energy dissipation is realized without occupying additional space.

Description

Technical Field

[0001] This invention belongs to the field of space frame structure technology, specifically a support damping connection device for space frame structures. Background Technology

[0002] Space frame structures are spatial truss structures made up of multiple members connected by nodes according to certain geometric rules. They have advantages such as light weight, large span, good rigidity, and beautiful appearance, and are widely used in large-span buildings such as stadiums, exhibition centers, airport terminals, and industrial plants.

[0003] Space frame structures are connected to the substructure (such as columns and walls) via supports, which are key force-transferring components that transfer vertical loads and horizontal forces between the space frame and the substructure. In large-span space frame structures, due to the large span, long natural period, and wide mass distribution, significant displacements and internal forces will occur at the supports under external factors such as earthquakes, wind loads, and temperature changes. If the supports do not have sufficient damping capacity, seismic or wind-induced vibration energy will be directly transferred to the substructure, easily leading to member buckling, node failure, or even overall structural collapse. Therefore, installing damping connection devices at the supports of space frame structures is an important measure to ensure structural safety.

[0004] Currently, the most commonly used vibration damping connection devices for space frame structures in engineering are plate rubber bearings. These bearings utilize the shear deformation of the rubber layer to adapt to horizontal displacement and dissipate vibration energy through the viscoelastic damping of the rubber material. They are simple in construction and low in cost. However, this type of bearing has the following shortcomings in practical applications: Firstly, rubber materials are prone to aging and hardening under long-term loads, and their damping performance deteriorates significantly over time. Moreover, the damping method is singular, relying solely on the elastic deformation of the material itself to dissipate energy, making it difficult to form a multi-stage energy dissipation mechanism along the vibration transmission path, resulting in limited damping efficiency. Secondly, the damping and connection functions are independent of each other, requiring additional components to simultaneously meet the dual requirements of load-bearing connection and damping energy dissipation, resulting in a complex overall structure, numerous parts, and inconvenient installation and maintenance. Third, the lack of an effective vibration transmission and distribution mechanism makes it impossible to simultaneously guide the vibration energy of the space frame structure to multiple energy dissipation channels for dispersed consumption. Under strong earthquakes or continuous vibrations, it is prone to problems such as insufficient energy dissipation capacity or premature locking, making it difficult to meet the vibration reduction requirements of large-span space frame structures under multiple working conditions. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a support damping connection device for a space frame structure, which solves the problems of existing plate rubber supports, such as damping attenuation, single damping method, separation of connection and damping function, lack of vibration distribution mechanism and easy locking.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a support damping connection device for a space frame structure, comprising a lower support and an upper support, wherein the upper support is used for connection to the space frame structure, and the lower support is used for connection to the lower structure, and further comprising: The lower support assembly is fixedly mounted on the top of the lower support. An upper support assembly is fixedly mounted to the bottom of the upper support. A steel ball, disposed between the lower support assembly and the upper support assembly, is used to transmit vertical loads between the lower support assembly and the upper support assembly and to allow relative rolling displacement; A shock-absorbing component is disposed on the top of the lower support component and surrounds the steel ball. When the steel ball rolls in the concave cavity of the spherical surface, it generates relative motion with the shock-absorbing component and dissipates vibration energy. The lower support assembly includes a first support member fixed to the top of the lower support, and the top of the first support member has a first spherical cavity with an upward opening. The upper support assembly includes a second support member fixed to the bottom of the upper support, and the bottom of the second support member has a second spherical cavity with an opening facing downward. The first spherical cavity and the second spherical cavity have the same radius of curvature, and both are larger than the radius of the steel ball. The second spherical cavity and the first spherical cavity are vertically coaxial. The lower part of the steel ball is in contact with the inner wall of the first spherical cavity, and the upper part of the steel ball is in contact with the inner wall of the second spherical cavity.

[0007] Preferably, both the inner walls of the first spherical cavity and the second spherical cavity are provided with a planar transition section at the middle. In the initial state, the steel ball is located on the planar transition section between the first spherical cavity and the second spherical cavity. The range of the planar transition section is smaller than the diameter of the steel ball, so that the steel ball remains stable in the initial position.

[0008] Preferably, the radial range of the planar transition section is smaller than the diameter of the steel ball, so that the steel ball only makes sliding contact within the range of the planar transition section, and makes rolling contact with the spherical curved surface areas of the first spherical cavity and the second spherical cavity when it exceeds the range of the planar transition section.

[0009] Preferably, the shock-absorbing assembly includes an annular connecting member sleeved at the equatorial plane of the steel ball, and a transmission ring is clamped and fixed on the annular connecting member by a pressure ring, the transmission ring being arranged coaxially with the steel ball.

[0010] Preferably, a shock-absorbing box is fixedly installed on the periphery of the top of the first receiving component, and a gap is left between the top surface of the shock-absorbing box and the bottom surface of the second receiving component; The bottom and top walls of the shock absorber are respectively provided with through grooves. The lower part of the steel ball enters the shock absorber through the bottom wall through groove and contacts the inner wall of the first spherical cavity. The top of the steel ball exits the shock absorber through the top wall through groove and contacts the inner wall of the second spherical cavity.

[0011] Preferably, the transmission ring is located in the vertical center of the shock absorber box, and shock absorber pads are fixedly installed on the upper and lower sides of the transmission ring on the inner wall of the shock absorber box, with a gap between the shock absorber pads and the upper and lower end faces of the transmission ring.

[0012] Preferably, a tensioning component is provided on the top of the shock-absorbing component; The tensioning assembly includes several elastic tensioning members evenly arranged circumferentially on the top of the shock absorber box. The bottom end of each elastic tensioning member is fixed to the top of the shock absorber box, and a pressure ring is installed on its top end.

[0013] Preferably, a plurality of balls are evenly embedded in the bottom of the pressure ring along the circumference, and the lower end of the balls protrudes from the bottom surface of the pressure ring.

[0014] Preferably, a docking ring is fixedly mounted on the periphery of the lower end of the second receiving member, and the bottom of the pressure ring forms rolling contact with the docking ring through ball bearings.

[0015] Preferably, the inner diameter of the pressure ring is larger than the outer diameter of the second receiving member, so that there is a radial clearance between the second receiving member and the pressure ring; In the initial state, the elastic tensioning member is in a tensile and stored state, applying a downward elastic restoring force to the pressure ring. The pressure ring applies a continuous downward pre-tension force to the mating ring through the ball bearings, which is then transmitted to the upper support via the second receiving member.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention integrates the load-bearing connection function with the vibration damping and energy dissipation function into the structural fit between the steel ball and the supporting component. The steel ball serves as both a load-bearing connector that transmits vertical loads between the first and second spherical concave cavities and a motion conversion element that converts horizontal vibrations into rolling motion. The vibration damping component transmits the rolling motion of the steel ball to the inside of the damping box through a transmission ring. The vibration energy is dissipated synchronously by the compression deformation of the damping pad and the end face friction, forming a multi-stage energy dissipation mechanism of steel ball climbing energy dissipation, damping pad compression energy dissipation, and end face friction energy dissipation. This achieves the synergistic integration of load-bearing connection and multi-stage vibration damping and energy dissipation without occupying additional space.

[0017] This invention utilizes a planar transition section located in the middle of the inner walls of the first and second spherical concave cavities to enable the support to exhibit a graded response to vibrations of different amplitudes: at small amplitudes, the steel ball slides slightly on the planar transition section, and the support exhibits a low-stiffness, flexible response, allowing the space frame structure to deform freely; at large amplitudes, the steel ball enters the spherical curved surface region, generating rolling, climbing, and energy dissipation. The two levels of response are naturally switched through the geometric dimensions of the planar transition section, without the need for additional control mechanisms or triggering devices, thus balancing the flexibility of daily deformation with safety under strong earthquakes.

[0018] This invention utilizes an elastic tensioning member in a tensile, stored-force state in the initial stage. A continuous downward preload is applied to the mating ring via a pressure ring and balls, ensuring the upper support maintains a pre-tight clamp on the steel ball, eliminating the initial impact caused by vertical clearance. When an earthquake or wind load generates an upward pull-out force, the elastic tensioning member resists this force with its increased elastic restoring force, preventing the upper support from detaching from the steel ball. After the vibration ends, the restoring force of the elastic tensioning member drives the upper support back to its initial position, working in conjunction with the steel ball's self-resetting mechanism to effectively reduce residual displacement. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram showing the disassembled structure of the lower supporting component, the upper supporting component, and the tensioning component of the present invention; Figure 6 This is a schematic diagram of the external structure of the lower and upper supporting components of the present invention; Figure 7 This is a schematic diagram of the disassembled structure of the shock-absorbing component and the steel ball of the present invention; Figure 8 This is a schematic diagram showing the disassembled structure of the tensioning component and the upper supporting component of the present invention.

[0020] In the diagram: 1. Lower support; 2. Upper support; 3. Lower receiving assembly; 31. First receiving component; 32. First spherical cavity; 4. Upper receiving assembly; 41. Second receiving component; 42. Second spherical cavity; 43. Connecting ring; 5. Steel ball; 6. Vibration damping assembly; 61. Vibration damping box; 62. Transmission ring; 63. Vibration damping pad; 64. Annular connecting component; 65. Pressure ring; 7. Tensioning assembly; 71. Pressure ring; 72. Elastic tensioning component; 73. Ball bearing. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 8 As shown, the present invention provides a support damping connection device for a space frame structure, including a lower support 1 and an upper support 2. The upper support 2 is used to connect with the space frame structure, and the lower support 1 is used to connect with the lower structure. The device also includes: The lower support component 3 is fixedly installed on the top of the lower support 1; Upper support component 4 is fixedly mounted on the bottom of upper support 2; Steel ball 5 is disposed between the lower support assembly 3 and the upper support assembly 4, and is used to transfer vertical loads between the lower support assembly 3 and the upper support assembly 4 and allow relative rolling displacement. The shock absorber 6 is located on the top of the lower support component 3 and surrounds the steel ball 5. When the steel ball 5 rolls in the concave cavity of the spherical surface, it generates relative motion with the shock absorber 6 and dissipates vibration energy. The lower support assembly 3 includes a first support member 31 fixedly mounted on the top of the lower support 1, and the top of the first support member 31 has a first spherical cavity 32 with the opening facing upward. The upper support assembly 4 includes a second support member 41 fixedly mounted on the bottom of the upper support 2, and the bottom of the second support member 41 has a second spherical cavity 42 with the opening facing downward. The first spherical cavity 32 and the second spherical cavity 42 have the same radius of curvature, and both are larger than the radius of the steel ball 5. The second spherical cavity 42 is vertically coaxial with the first spherical cavity 32. The lower part of the steel ball 5 is in contact with the inner wall of the first spherical cavity 32, and the upper part of the steel ball 5 is in contact with the inner wall of the second spherical cavity 42.

[0023] The space frame structure generates horizontal displacement and vibration. The vibration is transmitted to the upper support component 4 through the upper support 2. The second spherical cavity 42 of the upper support component 4 drives the steel ball 5 to roll between the upper support component 4 and the lower support component 3. Since the steel ball 5 is in rolling contact with the first spherical cavity 32 and the second spherical cavity 42, the rolling friction resistance is small, which allows the steel ball 5 to flexibly adapt to horizontal displacement from any direction, avoiding the problem of sluggish vibration reduction caused by the large friction resistance of traditional supports. Simultaneously, as the steel ball 5 rolls and shifts within the first spherical cavity 32 and the second spherical cavity 42, it generates a climbing effect along the spherical surface. The center of gravity of the steel ball 5 rises with the increase of the offset, and the component of gravity along the tangential direction of the spherical surface forms a restoring force pointing towards the initial equilibrium position, enabling the steel ball 5 to automatically return to its initial position after vibration ends, achieving a self-resetting function and effectively reducing residual displacement. During the rolling process of the steel ball 5, the steel ball 5 generates relative motion with the damping component 6 surrounding it. The damping component 6 deforms under the compression and shearing action of the steel ball 5, converting vibration energy into the elastic deformation energy and internal friction heat energy of the material for dissipation, forming a second-level energy dissipation mechanism. The above two-level energy dissipation mechanisms work together—the rolling and climbing of the steel ball 5 achieves the first-level energy dissipation and also takes into account self-resetting, while the deformation energy dissipation of the damping component 6 achieves the second-level energy dissipation and enhances the damping effect, significantly improving the overall damping efficiency while ensuring self-resetting capability.

[0024] By integrating the load-bearing connection function and the vibration damping and energy dissipation function into the structural cooperation between the steel ball 5 and the supporting component, the steel ball 5 serves as both a load-bearing connector to transmit vertical loads and a motion conversion element to convert horizontal vibrations into rolling motion. The vibration damping component 6 is arranged around the steel ball 5 to achieve multi-level energy dissipation without occupying additional space. The overall device has a compact structure and a small number of parts, effectively solving the technical problems of traditional support vibration damping methods being singular, the connection function being separated from the vibration damping function, and the lack of an effective vibration transmission and distribution mechanism.

[0025] like Figure 2 , Figure 5 and Figure 6 As shown, both the inner walls of the first spherical cavity 32 and the second spherical cavity 42 are provided with planar transition sections in the middle. In the initial state, the steel ball 5 is located on the planar transition section in the first spherical cavity 32 and the second spherical cavity 42. The range of the planar transition section is smaller than the diameter of the steel ball 5, so that the steel ball 5 remains stable in the initial position.

[0026] The radial range of the planar transition section is smaller than the diameter of the steel ball 5, so that the steel ball 5 only makes sliding contact when it is within the range of the planar transition section, and makes rolling contact with the spherical curved surface areas of the first spherical cavity 32 and the second spherical cavity 42 when it is outside the range of the planar transition section.

[0027] Both the inner walls of the first spherical cavity 32 and the second spherical cavity 42 are provided with planar transition sections. The planar transition section is a flat area in the center of the bottom of the cavity, and its circumferential periphery is a spherical curved surface area. The steel ball 5 is initially located on the planar transition section. Since the planar transition section provides a horizontal support surface, the steel ball 5 is in a stable equilibrium state in this area and will not roll or shift due to minor disturbances such as wind or temperature changes, effectively avoiding the accumulation of ineffective displacement of the support in daily use. Under the action of earthquake or wind load, when the horizontal displacement generated by the space frame structure is small, the steel ball 5 will produce a small amount of sliding on the planar transition section. Since the planar transition section has no curved slope, the steel ball 5 will not have a climbing effect. The support exhibits a flexible response with low stiffness and low resistance at this stage, which allows the space frame structure to produce necessary free deformation such as thermal expansion and contraction, and will not transfer vibration energy to the lower structure due to excessive initial stiffness. When the vibration displacement gradually increases and exceeds the range of the planar transition section, the steel ball 5 transitions from the planar transition section to the spherical curved surface area and forms rolling contact with the inner wall of the spherical curved surface area. When the steel ball 5 rolls in the spherical curved surface area, it generates a climbing effect. The component of gravity along the tangential direction of the spherical surface forms a restoring force pointing to the initial position, realizing the self-resetting function. At the same time, the rolling motion of the steel ball 5 drives the damping component 6 to deform and dissipate energy, converting the vibration energy into heat energy and dissipating it. The composite structure of the aforementioned planar transition section and spherical curved surface region enables the support to form a graded response mechanism to vibrations of different amplitudes. When the amplitude is small, the planar transition section provides a small degree of freedom of sliding without climbing, ensuring the flexibility of daily deformation. When the amplitude is large, the spherical curved surface region provides rolling climbing and damping energy dissipation, ensuring safety under strong earthquakes. The two levels of response are naturally switched through the geometric dimensions of the planar transition section, without the need for additional control mechanisms or triggering devices, making the structure simple and reliable.

[0028] like Figure 2 , Figure 4 and Figure 7 As shown, the shock absorption assembly 6 includes an annular connecting member 64 sleeved on the equatorial plane of the steel ball 5. A transmission ring 62 is clamped and fixed on the annular connecting member 64 by a pressure ring 65. The transmission ring 62 is coaxially arranged with the steel ball 5.

[0029] A shock-absorbing box 61 is fixedly installed on the outer periphery of the top of the first receiving part 31, and a gap is left between the top surface of the shock-absorbing box 61 and the bottom surface of the second receiving part 41. The bottom and top walls of the shock absorber box 61 are respectively provided with through grooves. The lower part of the steel ball 5 enters the shock absorber box 61 through the bottom wall through groove and contacts the inner wall of the first spherical cavity 32. The top of the steel ball 5 exits the shock absorber box 61 through the top wall through groove and contacts the inner wall of the second spherical cavity 42.

[0030] The transmission ring 62 is located in the vertical middle of the shock absorber box 61. The inner wall of the shock absorber box 61 is fixed with shock absorber pads 63 on the upper and lower sides of the transmission ring 62, and there is a gap between the shock absorber pads 63 and the upper and lower end faces of the transmission ring 62.

[0031] The transmission ring 62 is arranged coaxially with the steel ball 5, so that when the steel ball 5 rotates, it drives the transmission ring 62 to rotate synchronously through the annular connecting piece 64, realizing the reliable transmission of the rotational motion of the steel ball 5 to the transmission ring 62; a shock-absorbing box 61 is fixedly installed on the outer periphery of the top of the first receiving piece 31. The shock-absorbing box 61 is arranged around the steel ball 5 and is fixed with the first receiving piece 31. A gap is left between the top surface of the shock-absorbing box 61 and the bottom surface of the second receiving piece 41 to ensure that the upper support 2 drives the second receiving piece 41 to produce multi-directional displacement relative to the shock-absorbing box 61 without interference; The bottom and top walls of the shock absorber box 61 are respectively provided with through grooves. The lower part of the steel ball 5 passes through the bottom wall through groove into the shock absorber box 61 and contacts the inner wall of the first spherical cavity 32. The top of the steel ball 5 passes through the top wall through groove and exits the shock absorber box 61 and contacts the inner wall of the second spherical cavity 42. The size of the through groove is larger than the diameter of the steel ball 5, providing sufficient room for the rolling displacement of the steel ball 5 in the cavity. The transmission ring 62 is located in the vertical middle of the shock absorber box 61. The inner wall of the shock absorber box 61 is fixed with shock absorber pads 63 on the upper and lower sides of the transmission ring 62, and there is a gap between the shock absorber pads 63 and the upper and lower end faces of the transmission ring 62.

[0032] Under the action of earthquake or wind load, the space frame structure generates horizontal displacement and vibration. The upper support 2 drives the second bearing 41 to shift relative to the lower support 1, driving the steel ball 5 to roll in the first spherical cavity 32 and the second spherical cavity 42. While the steel ball 5 is rolling, it drives the transmission ring 62 to rotate synchronously through the annular connecting piece 64 and the pressure ring 65. The transmission ring 62, as the intermediate force transmission component between the steel ball 5 and the damping box 61, transmits the movement of the steel ball 5 to the inside of the damping box 61. When the transmission ring 62 moves axially with the steel ball 5, the upper and lower end faces of the transmission ring 62 alternately approach the top and bottom walls of the damping box 61. The damping pad 63 is compressed and deformed under the pressure of the transmission ring 62, converting the axial impact energy into elastic deformation energy for dissipation. When the transmission ring 62 rotates with the steel ball 5, friction occurs between the end face of the transmission ring 62 and the damping pad 63, converting the rotational kinetic energy into frictional heat energy for dissipation. The above-mentioned axial compression and end face friction work together to form a multi-directional energy dissipation mechanism inside the damping box 61, enabling the transmission ring 62 to distribute the rolling energy of the steel ball 5 to the axial and rotational directions for synchronous dissipation, significantly improving the overall energy dissipation efficiency of the damping assembly 6. Meanwhile, the gap between the damping pad 63 and the transmission ring 62 provides room for the normal rotation of the transmission ring 62, avoiding excessive constraint resistance during small amplitude vibrations, ensuring the flexibility of the support under daily minor deformations, and the damping pad 63 only fully participates in energy dissipation during large amplitude vibrations, thus achieving a graded response effect corresponding to the aforementioned planar transition section.

[0033] like Figure 2 , Figure 3 and Figure 5 As shown, a tensioning component 7 is provided on the top of the shock absorption component 6; The tensioning assembly 7 includes a plurality of elastic tensioning members 72 evenly arranged circumferentially on the top of the shock absorber box 61. The bottom end of the elastic tensioning member 72 is fixed to the top of the shock absorber box 61, and the top end is equipped with a pressure ring 71.

[0034] A number of balls 73 are evenly embedded in the bottom of the pressure ring 71 along the circumference, and the lower end of the balls 73 protrudes from the bottom surface of the pressure ring 71.

[0035] The lower end of the second receiving part 41 is fixedly equipped with a docking ring 43, and the bottom of the pressure ring 71 forms rolling contact with the docking ring 43 through the ball bearing 73.

[0036] The inner diameter of the pressure ring 71 is larger than the outer diameter of the second receiving member 41, so that there is a radial movement gap between the second receiving member 41 and the pressure ring 71. In the initial state, the elastic tensioning member 72 is in a tensile and stored state, applying a downward elastic restoring force to the pressure ring 71. The pressure ring 71 applies a continuous downward pre-tension force to the docking ring 43 through the ball bearing 73, which is then transmitted to the upper support 2 via the second receiving member 41.

[0037] In the initial assembly state, the elastic tensioning member 72 is in a tensile and stored state, applying a continuous upward elastic restoring force to the pressure ring 71. The pressure ring 71 applies a continuous downward pre-tension force to the docking ring 43 through the ball bearing 73. This pre-tension force is transmitted to the upper support 2 through the docking ring 43 and the second receiving member 41, so that the upper support 2 always maintains a downward pre-pressure on the steel ball 5, ensuring that the steel ball 5 always maintains close contact with the inner walls of the first spherical cavity 32 and the second spherical cavity 42, eliminating the initial impact and vibration transmission abrupt change caused by the vertical gap, and improving the response sensitivity of the support under small vibration conditions. When the space frame structure undergoes horizontal displacement under earthquake or wind loads, the upper support 2 drives the second bearing 41 and the docking ring 43 to shift synchronously. Since there is a radial clearance between the pressure ring 71 and the second bearing 41, the docking ring 43 can shift freely relative to the pressure ring 71 within the clearance range without being radially constrained, ensuring that the tensioning assembly 7 does not generate additional horizontal resistance during the horizontal movement of the support. At the same time, the balls 73 form rolling contact between the pressure ring 71 and the docking ring 43, so that as the docking ring 43 rotates with the upper support 2, the balls 73 roll on the top surface of the docking ring 43, converting sliding friction into rolling friction. This ensures the continuous transmission of preload and reduces frictional resistance during rotation, preventing the tensioning assembly 7 from interfering with the normal rotation function of the support. Under the condition that the space frame structure generates a vertical upward pull force, the elastic tension member 72 is further stretched, and the increased elastic restoring force resists the upward pull force, preventing the upper support 2 from detaching from the steel ball 5 and ensuring the reliability of the support connection. After the earthquake, the restoring force of the elastic tension member 72 drives the pressure ring 71 to return to its original position, and through the docking ring 43, it drives the upper support 2 to return to its initial position, realizing the self-resetting function. The above-mentioned tensioning component 7 and the rolling self-resetting of the steel ball 5, and the deformation energy dissipation of the damping component 6 work together to form a four-level damping mechanism of pre-tightening and positioning, rolling reset, deformation energy dissipation, and tensioning to prevent detachment. This effectively solves the technical problems of the background technology, such as the single damping method, the separation of connection function and damping function, and the lack of an effective vibration transmission and distribution mechanism.

[0038] Working principle and usage process of this invention: When the space frame structure is subjected to small-amplitude vibrations such as wind vibration or weak earthquakes, the upper support 2 causes the second bearing 41 to produce a slight horizontal offset, which drives the steel ball 5 to produce a slight sliding on the plane transition section. Since the plane transition section is a flat area, the steel ball 5 does not have a climbing effect, and the deformation of the damping component 6 is within the elastic range. At this stage, the support exhibits a flexible response with low stiffness and low resistance, allowing the space frame structure to produce the necessary thermal expansion and contraction deformation.

[0039] When the vibration displacement exceeds the range of the planar transition section, the steel ball 5 transitions from the planar transition section to the spherical curved surface region, and rolls within the second spherical cavity 42 and the first spherical cavity 32. The steel ball 5 generates a climbing effect along the spherical surface, and the component of gravity along the tangential direction of the spherical surface forms a restoring force pointing towards the initial equilibrium position. While the steel ball 5 rolls, it drives the transmission ring 62 to rotate synchronously through the annular connecting piece 64 and the pressure ring 65. When the transmission ring 62 moves axially with the steel ball 5, its upper and lower end faces alternately approach the top and bottom walls of the damping box 61. The damping pad 63 undergoes compression deformation under the pressure of the transmission ring 62, converting the axial impact energy into elastic deformation energy for dissipation. When the transmission ring 62 rotates, friction is generated between its end face and the damping pad 63, converting the rotational kinetic energy into frictional heat energy for dissipation.

[0040] When the space frame structure is subjected to seismic overturning moment or strong wind suction, and a vertical upward pull force is generated at some supports, the upper support 2 tends to detach upward. The elastic tensioning member 72 is further stretched, and the increased elastic restoring force is transmitted to the upper support 2 through the pressure ring 71, ball 73, and connecting ring 43 to resist the upward pull force and prevent the upper support 2 from detaching from the steel ball 5. At the same time, the radial movement gap between the pressure ring 71 and the second receiving member 41 allows the upper support 2 to move freely in the horizontal direction without generating additional horizontal resistance.

[0041] After the vibration ends, the steel ball 5 rolls back along the spherical surface in the concave cavity to the initial equilibrium position of the planar transition section, realizing displacement self-reset; the restoring force of the elastic tensioning member 72 drives the pressure ring 71 to return to its original position, and through the docking ring 43 drives the upper support 2 to return to its initial position, realizing pre-tightening self-reset.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0043] 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 support and damping connection device for a space frame structure, comprising a lower support (1) and an upper support (2), wherein the upper support (2) is used to connect to the space frame structure, and the lower support (1) is used to connect to the lower structure, characterized in that, Also includes: The lower support assembly (3) is fixedly mounted on the top of the lower support (1); Upper support component (4), which is fixedly mounted on the bottom of the upper support (2); Steel ball (5), the steel ball (5) is disposed between the lower support assembly (3) and the upper support assembly (4) for transmitting vertical loads between the lower support assembly (3) and the upper support assembly (4) and allowing relative rolling displacement; The shock-absorbing component (6) is disposed on the top of the lower support component (3) and surrounds the steel ball (5). When the steel ball (5) rolls in the spherical cavity, it generates relative motion with the shock-absorbing component (6) and dissipates vibration energy. The lower support assembly (3) includes a first support member (31) fixed to the top of the lower support (1), and the top of the first support member (31) has a first spherical cavity (32) with the opening facing upward. The upper support assembly (4) includes a second support member (41) fixed to the bottom of the upper support (2), and the bottom of the second support member (41) has a second spherical cavity (42) with the opening facing downward. The first spherical cavity (32) and the second spherical cavity (42) have the same radius of curvature, and both are larger than the radius of the steel ball (5). The second spherical cavity (42) and the first spherical cavity (32) are vertically coaxial. The lower part of the steel ball (5) is in contact with the inner wall of the first spherical cavity (32), and the upper part of the steel ball (5) is in contact with the inner wall of the second spherical cavity (42).

2. The support damping connection device for the space frame structure according to claim 1, characterized in that: The inner walls of the first spherical cavity (32) and the second spherical cavity (42) are both provided with a planar transition section in the middle. In the initial state, the steel ball (5) is located on the planar transition section in the first spherical cavity (32) and the second spherical cavity (42). The range of the planar transition section is smaller than the diameter of the steel ball (5), so that the steel ball (5) remains stable in the initial position.

3. The support damping connection device for the space frame structure according to claim 2, characterized in that: The radial range of the planar transition section is smaller than the diameter of the steel ball (5), so that the steel ball (5) only makes sliding contact within the range of the planar transition section, and makes rolling contact with the spherical curved surface areas of the first spherical cavity (32) and the second spherical cavity (42) when it is outside the range of the planar transition section.

4. The support damping connection device for the space frame structure according to claim 1, characterized in that: The shock-absorbing component (6) includes an annular connecting piece (64) sleeved on the equatorial plane of the steel ball (5). A transmission ring (62) is clamped and fixed on the annular connecting piece (64) by a pressure ring (65). The transmission ring (62) is coaxially arranged with the steel ball (5).

5. The support damping connection device for the space frame structure according to claim 4, characterized in that: A shock-absorbing box (61) is fixedly installed on the outer periphery of the top of the first receiving part (31), and a gap is left between the top surface of the shock-absorbing box (61) and the bottom surface of the second receiving part (41). The bottom and top walls of the shock absorber box (61) are respectively provided with through grooves. The lower part of the steel ball (5) passes through the bottom wall through groove into the shock absorber box (61) and contacts the inner wall of the first spherical cavity (32). The top of the steel ball (5) passes through the top wall through groove out of the shock absorber box (61) and contacts the inner wall of the second spherical cavity (42).

6. The support damping connection device for a space frame structure according to claim 5, characterized in that: The transmission ring (62) is located in the vertical middle of the shock-absorbing box (61). The inner wall of the shock-absorbing box (61) is fixed with shock-absorbing pads (63) on the upper and lower sides of the transmission ring (62). There is a gap between the shock-absorbing pads (63) and the upper and lower end faces of the transmission ring (62).

7. The support damping connection device for a space frame structure according to claim 5, characterized in that: The top of the shock-absorbing component (6) is provided with a tensioning component (7); The tensioning assembly (7) includes a plurality of elastic tensioning members (72) evenly arranged circumferentially on the top of the shock absorber box (61). The bottom end of the elastic tensioning member (72) is fixed to the top of the shock absorber box (61), and a pressure ring (71) is installed on the top end.

8. The support damping connection device for a space frame structure according to claim 7, characterized in that: The bottom of the pressure ring (71) is uniformly embedded with a number of balls (73) along the circumference, and the lower end of the balls (73) protrudes from the bottom surface of the pressure ring (71).

9. The support damping connection device for a space frame structure according to claim 8, characterized in that: The lower end of the second receiving member (41) is fixedly fitted with a docking ring (43), and the bottom of the pressure ring (71) forms a rolling contact with the docking ring (43) through the ball (73).

10. The support damping connection device for a space frame structure according to claim 9, characterized in that: The inner diameter of the pressure ring (71) is larger than the outer diameter of the second receiving member (41), so that there is a radial movement gap between the second receiving member (41) and the pressure ring (71). In the initial state, the elastic tensioning member (72) is in a tensile and stored state, applying a downward elastic restoring force to the pressure ring (71). The pressure ring (71) applies a continuous downward pre-tension force to the docking ring (43) through the ball (73), which is then transmitted to the upper support (2) via the second receiving member (41).

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