Steel truss damping and buffering mechanism
By employing a synergistic design of longitudinal and transverse damping mechanisms on the belt trestle, the vibration control problem of the belt trestle was solved, achieving omnidirectional vibration control and preservation of working space, significantly improving structural stability and seismic performance, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENHUA ZHUNGER ENERGY
- Filing Date
- 2026-01-22
- Publication Date
- 2026-04-21
AI Technical Summary
The lack of effective vibration control measures in existing industrial plant belt trestles leads to structural resonance, stress concentration and noise pollution. Traditional reinforcement methods also reduce working space and increase maintenance costs.
The design employs a synergistic approach of longitudinal damping mechanism and transverse damping structure, including multi-stage damping structure and flexible connectors. Through the combined action of pneumatic and hydraulic pressure, it absorbs high-frequency impact energy and buffers transverse vibration, avoiding structural resonance and stress concentration.
It achieves omnidirectional vibration control, significantly reduces vibration acceleration at critical nodes, extends service life, reduces fatigue damage, improves the working environment, and does not require additional supports or enlarged component cross-sections, thus maintaining working space and reducing maintenance costs.
Smart Images
Figure CN121897702A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vibration reduction technology for steel truss structures, and particularly to a vibration reduction and buffer mechanism for steel truss structures. Background Technology
[0002] In modern industrial production, the stability and safety of mechanical equipment are paramount. With increasing equipment operating speeds and loads, traditional structural designs are no longer sufficient to meet the increasingly stringent requirements of working environments. Therefore, improving the load-bearing capacity and seismic performance of mechanical structures has become a key research focus in the current technological field. Existing belt conveyor bridges in industrial plants are generally characterized by their long and narrow structure and limited space. Their longitudinal length often reaches tens or even hundreds of meters, while their lateral width is typically only 3-5 meters, forming a closed, narrow space similar to a pipe gallery. These bridges mostly use steel truss structures, which are prone to structural resonance when subjected to high-frequency impact loads from equipment such as vibrating screens and centrifuges over long periods. In actual operation, due to the lack of effective vibration control measures, the vibration energy generated by the belt conveyor system is transmitted along the steel structure, leading to stress concentration at key connection nodes. Measured peak vibration accelerations can reach over 0.2 m / s², exceeding safety limits. Simultaneously, the high-decibel noise (generally exceeding 85 dB) generated by the continuous vibration of the metal structure causes serious noise pollution to the working environment. More significantly, traditional reinforcement methods, such as adding lateral supports or enlarging the cross-section of components, while partially improving structural rigidity, further compress the already narrow working space, reducing the width of equipment maintenance passages to less than 1.2 meters. Furthermore, reinforcement work often requires production shutdowns, resulting in high economic costs. The combination of these problems leads to systemic defects in existing belt-type trestle bridges, including shortened service life, increased maintenance costs, and increased safety hazards. Summary of the Invention
[0003] The present invention provides a steel truss shock absorption and buffer mechanism to solve at least one of the above-mentioned technical problems.
[0004] A steel truss vibration damping and buffering mechanism includes: Horizontal steel trusses; The longitudinal steel truss has an installation opening, and the end of the transverse steel truss passes through the installation opening on the longitudinal steel truss and is located inside the longitudinal steel truss. The longitudinal damping mechanism is located inside the longitudinal steel truss. Flexible connectors are used to connect the longitudinal damping mechanism to the transverse steel truss. The longitudinal damping mechanism is hinged at the bottom to the longitudinal steel truss and connected to the transverse steel truss at the top via a flexible connector. The longitudinal damping mechanism is a multi-stage damping structure.
[0005] In one embodiment, the longitudinal damping mechanism includes: The cavity, the bottom of which is hinged to the interior of the longitudinal steel truss; The first piston is located inside the cavity and divides the cavity into a gas chamber and an oil chamber. The gas chamber is located at the bottom of the first piston, and the oil chamber is located at the top of the first piston. The second piston is located inside the oil chamber; The hydraulic damping mechanism is connected to the side of the second piston away from the first piston; The connecting shaft has one end passing through the outer wall of the cavity and connected to the hydraulic damping mechanism, and the other end connected to the transverse steel truss through a flexible connector. The air chamber is filled with high-pressure gas, and the oil chamber is filled with hydraulic oil.
[0006] In one embodiment, the hydraulic damping mechanism includes: The hydraulic damping chamber has its bottom abutting against the second piston, and an oil passage hole is provided on it; The third piston is located inside the hydraulic damping chamber, and one end of the connecting shaft that extends into the hydraulic damping chamber is connected to the third piston. The oil supply pipe has one end connected to the interior of the hydraulic damping chamber, and the other end passes through the second piston. The flow control element is located inside the oil pipeline.
[0007] In one embodiment, a support valve seat is also provided inside the hydraulic damping cavity, and the support valve seat has a threaded oil groove.
[0008] In one embodiment, a fixing plate is mounted on the portion of the connecting shaft located outside the cavity. A first spring is provided at the bottom of the fixing plate. The first spring is sleeved on the connecting shaft, with one end abutting against the fixing plate and the other end abutting against the top of the cavity.
[0009] In one embodiment, a tapered groove is provided on the side of the first piston near the second piston, so that a buffer cavity is formed between the first piston and the second piston, and the oil delivery pipe passes through one end of the second piston and communicates with the buffer cavity.
[0010] In one embodiment, the flexible connector includes: A spherical connector abuts against the transverse steel truss and is connected at its bottom to the connecting shaft; The mounting plate is mounted on the spherical connector and is bolted to the transverse steel truss.
[0011] In one embodiment, both the transverse steel truss and the mounting plate are provided with abutment holes, and the diameter of the abutment holes is smaller than the diameter of the spherical connector. The transverse steel truss abuts against the upper part of the spherical connector through the abutment holes, and the mounting plate abuts against the lower part of the spherical connector through the abutment holes.
[0012] In one embodiment, the interior of the longitudinal steel truss is provided with multiple sets of transverse damping structures, which are hinged to the transverse steel truss.
[0013] In one embodiment, the lateral damping structure includes: The first fixing block is installed on the inner wall of the longitudinal steel truss; The second fixing block is installed on the inner wall of the longitudinal steel truss; A connecting rod, one end of which is connected to the first fixing block and the other end of which is connected to the second fixing block; The slider is slidably connected to the connecting rod; The second spring is sleeved on the connecting rod, with one end abutting against the first fixed block and the other end abutting against the slider; The third spring is sleeved on the connecting rod, with one end abutting against the second fixed block and the other end abutting against the slider; The telescopic rod has one end hinged to the transverse steel truss and the other end hinged to the slider.
[0014] Compared with existing technologies, the advantages of this invention are as follows: The steel truss vibration damping and buffering mechanism of this invention achieves omnidirectional vibration control through the coordinated design of longitudinal and transverse vibration damping structures. It can efficiently absorb the high-frequency impact energy transmitted longitudinally by the trestle bridge while buffering transverse vibration, significantly reducing the vibration acceleration of key nodes, avoiding structural resonance and stress concentration, and fundamentally improving the overall stability and seismic performance of the steel truss structure, effectively extending the service life of the trestle bridge. This design does not rely on traditional reinforcement methods such as adding transverse supports or expanding the cross-section of components. Through the integration of flexible connections and vibration damping structures, it maximizes the preservation of the original working space of the trestle bridge, ensuring that the width of the equipment maintenance passage meets safety regulations and avoiding a decrease in production efficiency due to space compression. In addition, this mechanism does not require production shutdown for construction, is convenient to install and maintain, and can effectively reduce equipment maintenance costs and production losses. The multi-stage vibration damping structure can continuously attenuate vibration energy, reduce fatigue damage to metal structures, reduce safety hazards, and improve noise pollution in the working environment, ultimately achieving a dual improvement in economy and safety. Attached Figure Description
[0015] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.
[0016] Figure 1 This is a structural schematic diagram of a steel truss shock absorption and buffer mechanism according to the present invention.
[0017] Figure 2 This is a schematic diagram of the longitudinal damping mechanism in a steel truss damping and buffering mechanism of the present invention.
[0018] Figure 3 This is a schematic diagram of the supporting valve seat in a steel truss shock absorption and buffer mechanism of the present invention.
[0019] Figure 4 This is a schematic diagram of the flexible connector in a steel truss shock absorption and buffer mechanism of the present invention.
[0020] Figure 5 This is a schematic diagram of the transverse damping structure in a steel truss damping and buffering mechanism of the present invention.
[0021] Reference numerals: 1. Transverse steel truss; 2. Longitudinal steel truss; 3. Mounting port; 4. Longitudinal damping mechanism; 41. Cavity; 42. First piston; 43. Second piston; 44. Air chamber; 45. Hydraulic damping mechanism; 451. Hydraulic damping cavity; 452. Third piston; 453. Oil pipe; 454. Flow control core; 455. Support valve seat; 4551. Threaded oil groove; 456. Oil passage hole; 46. Connecting shaft; 47. Fixing plate; 48. First spring; 49. Oil chamber; 410. Buffer chamber; 5. Flexible connector; 51. Spherical connector; 52. Mounting plate; 6. Transverse damping structure; 61. First fixing block; 62. Second fixing block; 63. Connecting rod; 64. Slider; 65. Second spring; 66. Third spring; 67. Telescopic rod. Detailed Implementation
[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.
[0023] 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.
[0024] As described in the background section, traditional reinforcement methods, such as adding lateral supports or enlarging the cross-section of components, can partially improve structural rigidity, but they further compress the already narrow working space, reducing the width of equipment maintenance passages to less than 1.2 meters. Moreover, reinforcement work often requires production to be stopped, resulting in high economic costs. The combination of these problems leads to systemic defects in existing belt-type trestle bridges, such as shortened service life, increased maintenance costs, and increased safety hazards.
[0025] To solve the above problems, refer to Figure 1This invention provides a steel truss vibration damping and buffering mechanism, comprising: a transverse steel truss 1, a longitudinal steel truss 2, a longitudinal vibration damping mechanism 4, and a flexible connector 5. The longitudinal steel truss 2 has an installation opening 3. The end of the transverse steel truss 1 passes through the installation opening 3 on the longitudinal steel truss 2 and is disposed inside the longitudinal steel truss 2. The longitudinal vibration damping mechanism 4 is disposed inside the longitudinal steel truss 2 and is connected to the transverse steel truss 1 through the flexible connector 5. The bottom of the longitudinal vibration damping mechanism 4 is hinged to the longitudinal steel truss 2, and the top is connected to the transverse steel truss 1 through the flexible connector 5. The longitudinal vibration damping mechanism 4 is a multi-stage vibration damping structure.
[0026] Specifically, the end of the transverse steel truss 1 passes through the mounting opening 3 on the longitudinal steel truss 2 and extends into its interior. The two are not rigidly welded or bolted together, but rather connected non-rigidly via the longitudinal damping mechanism 4 and the flexible connector 5. The bottom of the longitudinal damping mechanism 4 is hinged to the longitudinal steel truss 2. This hinged structure allows the mechanism to oscillate under load, avoiding stress concentration caused by rigid constraints. Its top is connected to the transverse steel truss 1 via the flexible connector 5, further releasing the torsional and deflection degrees of freedom of the nodes. The longitudinal damping mechanism 4 itself is a multi-stage damping structure, capable of stratified absorption and dissipation of energy along the longitudinal force transmission path. When the transverse steel truss 1 is subjected to high-frequency impacts from a belt conveyor system or vibrating equipment, the impact force is sequentially transmitted to the longitudinal steel truss 2 via the flexible connector 5 and the longitudinal damping mechanism 4, and is gradually attenuated by the multi-stage structure during transmission. Simultaneously, the longitudinal steel truss 2 also contains a transverse damping structure 6, which buffers transverse vibrations, thereby achieving omnidirectional control of longitudinal impacts and transverse vibrations, significantly improving the stability and vibration resistance of the entire steel truss system.
[0027] Furthermore, this invention achieves omnidirectional vibration control through the coordinated operation of the longitudinal damping mechanism 4 and the transverse damping structure 6. This efficiently absorbs the high-frequency impact energy transmitted longitudinally by the trestle bridge while buffering transverse vibrations, significantly reducing vibration acceleration at key nodes, preventing structural resonance and stress concentration, and fundamentally improving the overall stability and seismic performance of the steel truss structure, effectively extending the service life of the trestle bridge. This invention does not rely on traditional reinforcement methods such as adding transverse supports or expanding component cross-sections. Through the integration of flexible connections and damping structures, it maximizes the preservation of the original working space of the trestle bridge, ensuring that the width of the equipment maintenance passage meets safety regulations and avoiding a decrease in production efficiency due to space compression. In addition, the multi-stage damping structure continuously attenuates vibration energy, reducing fatigue damage to the metal structure, lowering safety hazards, and improving noise pollution in the working environment, ultimately achieving a dual improvement in economy and safety.
[0028] Furthermore, the multi-level damping parameters of the longitudinal damping mechanism 4, such as spring stiffness, hydraulic oil damping coefficient, and air chamber pressure, can be adjusted for different load conditions to adapt to a wider range of industrial scenarios; the surface of the flexible connector 5 can also be treated with a wear-resistant coating to improve its service life under long-term alternating loads.
[0029] Preferred, such as Figure 2 As shown, the longitudinal damping mechanism 4 includes: a cavity 41, a first piston 42, a second piston 43, a hydraulic damping mechanism 45, and a connecting shaft 46. The bottom of the cavity 41 is hinged to the interior of the longitudinal steel truss 2. The first piston 42 is located inside the cavity 41 and divides the cavity 41 into an air chamber 44 and an oil chamber 49. The air chamber 44 is located at the bottom of the first piston 42, and the oil chamber 49 is located at the top of the first piston 42. The second piston 43 is located inside the oil chamber 49. The hydraulic damping mechanism 45 is connected to the side of the second piston 43 away from the first piston 42. One end of the connecting shaft 46 passes through the outer wall of the cavity 41 and is connected to the hydraulic damping mechanism 45. The other end is connected to the transverse steel truss 1 through a flexible connector 5. The air chamber 44 is filled with high-pressure gas, and the oil chamber 49 is filled with hydraulic oil.
[0030] Specifically, the longitudinal damping mechanism 4 adopts a three-stage coordinated damping principle of "spring-hydraulic-pneumatic". The bottom of the cavity 41 is hinged inside the longitudinal steel truss 2, providing a stable installation foundation for the entire mechanism, while allowing the mechanism to swing at a small angle under force, avoiding stress concentration caused by rigid installation. The first piston 42 divides the cavity 41 into a bottom air chamber 44 and a top oil chamber 49. The high-pressure gas filled in the air chamber 44 provides elastic buffering, while the hydraulic oil in the oil chamber 49 generates damping force through viscous flow. The second piston 43 is located inside the oil chamber 49, serving as the load-bearing foundation of the hydraulic damping mechanism 45. When the transverse steel truss 1 transmits longitudinal force, the flexible connector 5 drives the connecting shaft 46 to move downward, and the connecting shaft 46 further pushes the hydraulic damping mechanism 45 downward, sequentially driving the second piston 43 and the first piston 42. During this process, the hydraulic oil in the oil chamber 49 is squeezed and flows through the narrow channel, generating damping force to dissipate energy; at the same time, the first piston 42 compresses the high-pressure gas in the air chamber 44 downward, and the compressibility of the gas provides further elastic buffering, achieving efficient shock absorption through the synergistic effect of the three-stage structure.
[0031] Furthermore, the synergistic effect of the three-stage damping structure enables vibration attenuation over a wide frequency range. The high-pressure gas in the air chamber 44 addresses low-frequency, large-displacement impacts, while the hydraulic oil in the oil chamber 49 dampes high-frequency, small-amplitude vibrations, effectively covering the complex load scenarios of industrial trestle bridges. The layered design of the first piston 42 and the second piston 43 makes the energy transfer path clearer and the damping efficiency higher. Simultaneously, the gas-liquid separation structure enhances the reliability and service life of the mechanism.
[0032] Furthermore, a pressure sensor can be added inside the air chamber 44 to monitor the gas pressure in real time and feed it back to the control system to achieve dynamic adjustment of the air pressure; high viscosity hydraulic oil or damping additives can be used to further optimize the damping performance of the oil chamber 49; a heat insulation layer can also be added to the outside of the chamber 41 to reduce the influence of ambient temperature on the viscosity of hydraulic oil and improve the stability of the mechanism under extreme working conditions.
[0033] Preferred, such as Figure 2 As shown, the hydraulic damping mechanism 45 includes: a hydraulic damping cavity 451, a third piston 452, an oil supply pipe 453, and a flow control core 454. The bottom of the hydraulic damping cavity 451 abuts against the second piston 43, and an oil passage hole 456 is provided on it. The third piston 452 is disposed inside the hydraulic damping cavity 451, and one end of the connecting shaft 46 extending into the hydraulic damping cavity 451 is connected to the third piston 452. One end of the oil supply pipe 453 communicates with the inside of the hydraulic damping cavity 451, and the other end passes through the second piston 43. The constant flow core 454 is located inside the oil delivery pipe 453.
[0034] Specifically, the hydraulic damping mechanism 45 achieves damping and shock absorption through the viscous flow of hydraulic oil. The bottom of the hydraulic damping chamber 451 abuts against the second piston 43, and a third piston 452 is disposed inside it. One end of the connecting shaft 46 extending into the hydraulic damping chamber 451 is connected to the third piston 452. When the connecting shaft 46 moves downward, the third piston 452 compresses the hydraulic oil in the hydraulic damping chamber 451, causing it to flow into the oil supply pipe 453 through the oil passage 456, and further decelerate through the narrow channel of the flow-stabilizing core 454. The viscous flow of hydraulic oil in the narrow channel generates a significant damping force, thereby dissipating impact energy. One end of the oil supply pipe 453 passing through the second piston 43 is connected to the buffer chamber 410, allowing the compressed hydraulic oil to enter the buffer chamber 410, preventing a sudden pressure rise in the oil chamber 49, and providing an oil return path for subsequent reset.
[0035] Furthermore, the constant flow core 454 can precisely control the flow rate of hydraulic oil, ensuring the stability and predictability of the damping force; the connection between the oil supply pipe 453 and the buffer chamber 410 effectively alleviates the pressure fluctuations in the oil chamber 49, improving the vibration reduction efficiency and service life of the mechanism.
[0036] Furthermore, the flow core 454 with different apertures can be replaced according to different load requirements to adjust the damping coefficient; the surface hardening treatment of the hydraulic damping cavity 451 can also be carried out to improve its wear resistance.
[0037] Preferred, such as Figure 3 As shown, a support valve seat 455 is also provided inside the hydraulic damping cavity 451, and a threaded oil groove 4551 is provided on the support valve seat 455.
[0038] Specifically, the support valve seat 455 is located inside the hydraulic damping cavity 451, and a threaded oil groove 4551 is formed on it. When the third piston 452 moves downward, hydraulic oil flows through the threaded oil groove 4551. The spiral channel of the threaded oil groove 4551 increases the flow path length of the hydraulic oil, further improving the damping effect; at the same time, the threaded structure can generate tiny vortices when the oil flows, enhancing energy dissipation. The support valve seat 455 also provides stable support for the third piston 452, preventing it from tilting or jamming during movement.
[0039] Furthermore, the design of the threaded oil groove 4551 further optimizes the damping performance of the hydraulic oil and improves the mechanism's ability to attenuate high-frequency vibrations; the supporting role of the valve seat 455 enhances the structural stability of the mechanism and reduces the wear and failure risk of moving parts.
[0040] Furthermore, the pitch and depth of the threaded oil groove 4551 can be adjusted according to actual needs to precisely control the magnitude of the damping force; a wear-resistant coating can be sprayed on the surface of the support valve seat 455 to improve its service life under long-term alternating loads; and small protrusions can be added inside the threaded oil groove 4551 to further enhance the vortex effect and improve energy dissipation efficiency.
[0041] Preferred, such as Figure 4 As shown, the connecting shaft 46 is located outside the cavity 41, and a fixing plate 47 is installed on it. A first spring 48 is provided at the bottom of the fixing plate 47. The first spring 48 is sleeved on the connecting shaft 46, with one end abutting against the fixing plate 47 and the other end abutting against the top of the cavity 41.
[0042] Specifically, a fixing plate 47 is installed on the portion of the connecting shaft 46 located outside the cavity 41. A first spring 48, located at the bottom of the fixing plate 47, is sleeved on the connecting shaft 46, with one end abutting against the fixing plate 47 and the other end abutting against the top of the cavity 41. When the longitudinal impact force transmitted by the transverse steel truss 1 acts on the connecting shaft 46 through the flexible connector 5, the connecting shaft 46 will drive the fixing plate 47 to move downward, compressing the first spring 48 to produce elastic deformation. The elastic force of the spring will directly absorb and dissipate a portion of the initial impact energy, forming the first stage of shock absorption and buffering in the longitudinal damping mechanism 4. When the impact force gradually disappears, the elastic restoring force of the first spring 48 will push the fixing plate 47 and the connecting shaft 46 to return to their original positions, assisting the entire hydraulic damping mechanism 45 and piston assembly to return to their initial positions, ensuring that the mechanism can quickly respond to the next impact. In addition, the preload of the first spring 48 can be adjusted by adjusting the installation position of the fixing plate 47 on the connecting shaft 46 to adapt to the initial buffering requirements under different load conditions.
[0043] Furthermore, the first spring 48 provides the first line of defense for the longitudinal damping mechanism 4, effectively reducing the peak load of the subsequent hydraulic and pneumatic structures and avoiding the overload risk of the multi-stage damping structure under instantaneous impact. Simultaneously, the reset function of the first spring 48 improves the mechanism's response speed and cyclic stability, ensuring the continuity and reliability of the damping process. This structure requires no additional power drive; it achieves buffering and reset solely through the elastic deformation of the first spring 48, featuring a simple structure and low maintenance costs.
[0044] Furthermore, different stiffnesses of the first spring 48 can be selected according to different load requirements, or a double spring in parallel can be used to further improve the initial buffering capacity; an anti-corrosion coating can be applied to the surface of the first spring 48 to improve its service life in humid or corrosive industrial environments; a rubber buffer pad can also be added between the fixed plate 47 and the top of the cavity 41 to reduce rigid collisions and noise when the spring is compressed, and further optimize the shock absorption effect.
[0045] Preferred, such as Figure 2 As shown, a tapered groove is provided on the side of the first piston 42 near the second piston 43, so that a buffer cavity 410 is formed between the first piston 42 and the second piston 43, and the oil pipe 453 passes through one end of the second piston 43 and communicates with the buffer cavity 410.
[0046] Specifically, a conical groove is formed on the side of the first piston 42 near the second piston 43, creating a buffer chamber 410 between the first piston 42 and the second piston 43. An oil supply pipe 453 passes through one end of the second piston 43 and connects to the buffer chamber 410. When the hydraulic damping mechanism 45 operates, the third piston 452 compresses hydraulic oil into the buffer chamber 410 through the oil supply pipe 453. The conical groove expands the oil's capacity, preventing a sudden pressure increase within the oil chamber 49. Simultaneously, the conical structure guides the oil to distribute evenly along the chamber wall, reducing local pressure concentration and improving the stability of the oil flow. The hydraulic oil in the buffer chamber 410 also generates a uniform thrust on the first piston 42 when the second piston 43 moves downwards, preventing the first piston 42 from tilting or jamming and ensuring that the high-pressure gas in the air chamber 44 is compressed evenly.
[0047] Furthermore, the buffer chamber 410 effectively alleviates pressure fluctuations within the oil chamber 49, preventing pressure shocks caused by hydraulic oil flowing in narrow channels, thus improving the damping efficiency and service life of the mechanism. The guiding effect of the conical groove makes the oil flow more uniform, reducing local wear and failure risks of the piston assembly, while ensuring the stability of the pneumatic buffer.
[0048] Furthermore, the cone angle and depth of the conical groove can be adjusted to optimize the volume and oil flow characteristics of the buffer chamber 410, adapting to the pressure buffering requirements under different loads; a spiral guide groove can be set on the inner wall of the buffer chamber 410 to further guide the oil to distribute evenly and enhance the energy dissipation effect; a filter screen can also be added in the buffer chamber 410 to filter impurities in the hydraulic oil, preventing blockage of the flow core 454 and the oil delivery pipe 453, and improving the reliability of the mechanism.
[0049] Preferred, such as Figure 4 As shown, the flexible connector 5 includes a spherical connector 51 and a mounting plate 52. The spherical connector 51 abuts against the transverse steel truss 1 and its bottom is connected to the connecting shaft 46. The mounting plate 52 is disposed on the spherical connector 51 and is connected to the transverse steel truss 1 by bolts.
[0050] Specifically, the flexible connector 5 includes a spherical connector 51 and a mounting plate 52. The spherical connector 51 abuts against the transverse steel truss 1, and its bottom is connected to the connecting shaft 46. The mounting plate 52 is connected to the transverse steel truss 1 by bolts, clamping the spherical connector 51 between the transverse steel truss 1 and the mounting plate 52. The spherical design of the spherical connector 51 allows for multi-directional angular deflection between the transverse steel truss 1 and the connecting shaft 46. When the transverse steel truss 1 is subjected to longitudinal impact or transverse vibration, the spherical connector 51 can freely deflect within the abutment surface, thereby releasing the torsional and deflection stress of the node and avoiding stress concentration caused by rigid connection. This flexible connection method can also adapt to small relative displacements between the transverse steel truss 1 and the longitudinal steel truss 2, ensuring that the damping force can be evenly transmitted to the longitudinal damping mechanism 4.
[0051] Furthermore, the spherical connector 51 enables multi-directional flexible connection of the nodes, effectively absorbing the relative displacement and torsion between the transverse steel truss 1 and the longitudinal steel truss 2, and improving the vibration resistance of the entire structure; the bolt connection of the mounting plate 52 facilitates installation and maintenance, while ensuring the reliability of the connection and avoiding the risk of fatigue fracture under long-term vibration of rigid connection methods such as welding.
[0052] Furthermore, a polytetrafluoroethylene lubricating coating can be sprayed onto the spherical surface of the spherical connector 51 to improve its smoothness during deflection and reduce friction and wear; the spherical connector 51 can be made of high-strength wear-resistant alloy steel to improve its service life under long-term alternating loads; a rubber buffer pad can also be added between the mounting plate 52 and the transverse steel truss 1 to further buffer vibration transmission and reduce noise pollution.
[0053] Preferred, such as Figure 4As shown, both the transverse steel truss 1 and the mounting plate 52 are provided with abutment holes, and the diameter of the abutment holes is smaller than the diameter of the spherical connector 51. The transverse steel truss 1 abuts against the upper part of the spherical connector 51 through the abutment holes, and the mounting plate 52 abuts against the lower part of the spherical connector 51 through the abutment holes.
[0054] Specifically, both the transverse steel truss 1 and the mounting plate 52 have abutment holes, the diameter of which is smaller than the diameter of the spherical connector 51. The transverse steel truss 1 abuts against the upper part of the spherical connector 51 through the abutment holes, and the mounting plate 52 abuts against the lower part of the spherical connector 51 through the abutment holes, reliably constraining the spherical connector 51 between the two abutment holes while preserving the deflection freedom of the spherical surface. When the transverse steel truss 1 is subjected to transverse or longitudinal forces, the spherical connector 51 can deflect in multiple directions within the abutment holes, thereby releasing stress and avoiding rigid collisions. The edges of the abutment holes are rounded to reduce friction and wear during the deflection of the spherical connector 51, ensuring the long-term reliability of the connection.
[0055] Furthermore, the design of the abutment hole ensures the reliable installation of the spherical connector 51 while retaining its deflection freedom, achieving a balance between flexible connection and rigid constraint. At the same time, this structure facilitates quick disassembly and maintenance; the spherical connector 51 can be replaced simply by removing the bolts of the mounting plate 52, improving the practicality and maintainability of the mechanism.
[0056] Furthermore, chamfers or wear-resistant bushings can be provided at the edges of the abutment hole to further reduce friction and wear when the spherical connector 51 deflects; the inner wall of the abutment hole can be made of self-lubricating composite material to improve the smoothness of deflection; wear-resistant gaskets can also be added between the spherical connector 51 and the abutment hole to further extend the service life and reduce the maintenance frequency.
[0057] Preferred, such as Figure 5 As shown, the longitudinal steel truss 2 has multiple sets of transverse damping structures 6 inside, and the transverse damping structures 6 are hinged to the transverse steel truss 1.
[0058] Specifically, the longitudinal steel truss 2 is internally equipped with multiple sets of transverse damping structures 6, which are hinged to the transverse steel truss 1. When the transverse steel truss 1 is subjected to lateral vibration, the impact force is transmitted to the transverse damping structure 6 through the hinge points, and absorbed and dissipated by its internal elastic elements, thereby reducing the transmission of lateral vibration to the longitudinal steel truss 2 and improving the lateral stability of the entire structure. The multiple sets of transverse damping structures 6 are evenly arranged along the length of the longitudinal steel truss 2, which can achieve uniform force distribution, avoid local stress concentration, and ensure that lateral vibration can be fully buffered. The rubber bushings at the hinge points can further reduce friction and noise, and improve the flexibility and reliability of the connection.
[0059] Furthermore, the installation of the transverse damping structure 6 effectively improves the transverse vibration resistance of the entire steel truss system, reduces the impact of transverse vibration on key nodes, and avoids fatigue damage to the structure under transverse loads. The multi-group arrangement design makes the stress distribution more uniform, further improving the stability and reliability of the structure, while not requiring additional working space and maintaining the passage width of the trestle.
[0060] Furthermore, the number and arrangement of the transverse damping structures 6 can be adjusted according to the distribution of the transverse load to optimize the damping effect; hydraulic damping elements can be added to the transverse damping structures 6 to further enhance the attenuation capability of high-frequency transverse vibration.
[0061] Preferred, such as Figure 5 As shown, the transverse damping structure 6 includes: a first fixing block 61, a second fixing block 62, a connecting rod 63, a slider 64, a second spring 65, a third spring 66, and a telescopic rod 67. The first fixing block 61 is installed on the inner wall of the longitudinal steel truss 2, the second fixing block 62 is installed on the inner wall of the longitudinal steel truss 2, one end of the connecting rod 63 is connected to the first fixing block 61, and the other end is connected to the second fixing block 62. The slider 64 is slidably connected to the connecting rod 63. The second spring 65 is sleeved on the connecting rod 63, with one end abutting against the first fixing block 61 and the other end abutting against the slider 64. The third spring 66 is sleeved on the connecting rod 63, with one end abutting against the second fixing block 62 and the other end abutting against the slider 64. One end of the telescopic rod 67 is hinged to the transverse steel truss 1, and the other end is hinged to the slider 64.
[0062] Specifically, the lateral damping structure 6 includes a first fixed block 61, a second fixed block 62, a connecting rod 63, a slider 64, a second spring 65, a third spring 66, and a telescopic rod 67. The first fixed block 61 and the second fixed block 62 are installed on the inner wall of the longitudinal steel truss 2, connected by the connecting rod 63, with the slider 64 slidably connected to the connecting rod 63. The second spring 65 and the third spring 66 are respectively sleeved on both ends of the connecting rod 63, one end abutting against the fixed block, and the other end abutting against the slider 64. When the lateral steel truss 1 is subjected to a lateral force, the telescopic rod 67 will drive the slider 64 to slide on the connecting rod 63, compressing or stretching the second spring 65 and the third spring 66. The elastic deformation of the springs will absorb the lateral impact energy, thereby achieving lateral damping. The linear bearing between the slider 64 and the connecting rod 63 ensures smooth sliding and reduces friction and wear.
[0063] Furthermore, the symmetrical design of the double springs enables bidirectional lateral shock absorption. Regardless of the direction of the lateral force, energy can be absorbed through the compression or stretching of the springs, ensuring consistent shock absorption. The sliding connection between the slider 64 and the connecting rod 63 ensures smooth movement and improves the reliability and service life of the mechanism. The entire structure requires no additional power drive and relies solely on the elastic deformation of the springs to achieve buffering, making it low-cost and easy to maintain.
[0064] Furthermore, the stiffness of the second spring 65 and the third spring 66 can be adjusted according to the magnitude of the lateral load, or a variable stiffness spring can be used to further optimize the damping effect; a graphite lubricating coating can be applied to the surface of the connecting rod 63 to improve the smoothness of the sliding of the slider 64.
[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0068] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A steel truss vibration damping and buffering mechanism, characterized in that, include: Transverse steel truss (1); A longitudinal steel truss (2) has an installation opening (3) thereon, and the end of the transverse steel truss (1) passes through the installation opening (3) on the longitudinal steel truss (2) and is located inside the longitudinal steel truss (2); A longitudinal damping mechanism (4) is disposed inside the longitudinal steel truss (2); The longitudinal damping mechanism (4) is connected to the transverse steel truss (1) via the flexible connector (5); The bottom of the longitudinal damping mechanism (4) is hinged to the longitudinal steel truss (2), and the top is connected to the transverse steel truss (1) through the flexible connector (5). The longitudinal damping mechanism (4) is a multi-stage damping structure.
2. The steel truss vibration damping and buffering mechanism according to claim 1, characterized in that, The longitudinal damping mechanism (4) includes: The cavity (41) is hinged at its bottom to the interior of the longitudinal steel truss (2); A first piston (42) is disposed inside the cavity (41) and divides the cavity (41) into a gas chamber (44) and an oil chamber (49). The gas chamber (44) is located at the bottom of the first piston (42), and the oil chamber (49) is located at the top of the first piston (42). The second piston (43) is disposed inside the oil chamber (49); A hydraulic damping mechanism (45) is connected to the side of the second piston (43) away from the first piston (42); The connecting shaft (46) has one end passing through the outer wall of the cavity (41) and connected to the hydraulic damping mechanism (45), and the other end is connected to the transverse steel truss (1) through the flexible connector (5); The air chamber (44) is filled with high-pressure gas, and the oil chamber (49) is filled with hydraulic oil.
3. The steel truss vibration damping and buffering mechanism according to claim 2, characterized in that, The hydraulic damping mechanism (45) includes: The hydraulic damping chamber (451) has its bottom abutting against the second piston (43), and has an oil passage hole (456) on it. The third piston (452) is disposed inside the hydraulic damping cavity (451), and one end of the connecting shaft (46) extending into the hydraulic damping cavity (451) is connected to the third piston (452); The oil pipe (453) has one end connected to the interior of the oil pressure damping cavity (451) and the other end passes through the second piston (43). A flow control core (454) is disposed inside the oil delivery pipe (453).
4. The steel truss vibration damping and buffering mechanism according to claim 3, characterized in that, The hydraulic damping cavity (451) is also provided with a support valve seat (455), and the support valve seat (455) is provided with a threaded oil groove (4551).
5. The steel truss vibration damping and buffering mechanism according to claim 2, characterized in that, The connecting shaft (46) is located outside the cavity (41), and a fixing plate (47) is installed on it. A first spring (48) is provided at the bottom of the fixing plate (47). The first spring (48) is sleeved on the connecting shaft (46), with one end abutting against the fixing plate (47) and the other end abutting against the top of the cavity (41).
6. The steel truss vibration damping and buffering mechanism according to claim 3, characterized in that, The first piston (42) has a tapered groove on the side near the second piston (43), so that a buffer cavity (410) is formed between the first piston (42) and the second piston (43), and the oil pipe (453) passes through one end of the second piston (43) and communicates with the buffer cavity (410).
7. The steel truss vibration damping and buffering mechanism according to claim 2, characterized in that, The flexible connector (5) includes: A spherical connector (51) abuts against the transverse steel truss (1) and its bottom is connected to the connecting shaft (46); Mounting plate (52) is mounted on the spherical connector (51) and is connected to the transverse steel truss (1) by bolts.
8. The steel truss vibration damping and buffering mechanism according to claim 7, characterized in that, Both the transverse steel truss (1) and the mounting plate (52) are provided with abutment holes, and the diameter of the abutment holes is smaller than the diameter of the spherical connector (51). The transverse steel truss (1) abuts against the upper part of the spherical connector (51) through the abutment holes, and the mounting plate (52) abuts against the lower part of the spherical connector (51) through the abutment holes.
9. The steel truss vibration damping and buffering mechanism according to claim 1, characterized in that, The longitudinal steel truss (2) is provided with multiple sets of transverse damping structures (6) inside, and the transverse damping structures (6) are hinged to the transverse steel truss (1).
10. The steel truss vibration damping and buffering mechanism according to claim 9, characterized in that, The transverse damping structure (6) includes: The first fixing block (61) is installed on the inner wall of the longitudinal steel truss (2); The second fixing block (62) is installed on the inner wall of the longitudinal steel truss (2); The connecting rod (63) has one end connected to the first fixing block (61) and the other end connected to the second fixing block (62); A slider (64) is slidably connected to the connecting rod (63); The second spring (65) is sleeved on the connecting rod (63), with one end abutting against the first fixing block (61) and the other end abutting against the slider (64); The third spring (66) is sleeved on the connecting rod (63), with one end abutting against the second fixing block (62) and the other end abutting against the slider (64); The telescopic rod (67) is hinged at one end to the transverse steel truss (1) and at the other end to the slider (64).