A vibration double-control isolation rubber bearing with quasi-constant frequency function

Abstract

The application discloses a kind of vibration and shock double-control isolation rubber bearing with quasi-constant frequency function, it is related to the field of building structure aseismatic and vibration reduction technology, it includes connecting plate and the upper part of connecting plate is fixed with several laminated rubber sheet for absorbing and dissipating seismic energy and stiffened steel plate, laminated rubber sheet outside is equipped with with connecting plate fixed sealing and then reach the rubber protective layer of anti-aging, the middle part of laminated rubber sheet is equipped with lead core, the upper part of lead core is fixed with fixed steel plate, the upper part of fixed steel plate is fixed with several array setting damper, the positioning pin outside damper is equipped with several uniform transmission vertical load disc spring and rubber elastic element.The application improves the problem that frequency characteristic changes with upper load and lacks double control of earthquake and daily vibration.

Description

Technical Field

[0001] This application relates to the field of seismic resistance and vibration reduction technology for building structures, and in particular to a vibration-isolation rubber bearing with quasi-constant frequency function. Background Technology

[0002] Seismic isolation rubber bearings are widely used in building and bridge engineering for seismic isolation, effectively reducing the transmission of seismic energy to the upper structure through their high elasticity and damping characteristics. However, the frequency characteristics of traditional seismic isolation rubber bearings change with increasing deformation, resulting in unstable seismic isolation performance under different seismic intensities. In addition, traditional bearings are designed only for seismic action and are difficult to effectively control everyday vibrations such as wind vibration and traffic vibration, affecting the comfort and durability of the structure.

[0003] In recent years, researchers have proposed various design schemes for improved seismic isolation rubber bearings, but the problem of frequency characteristics varying with superstructure loads remains unresolved, and the bearings also lack the ability to control both earthquakes and daily vibrations. Therefore, developing a seismic isolation rubber bearing with quasi-constant frequency characteristics that can simultaneously control earthquakes and daily vibrations has significant engineering application value. Summary of the Invention

[0004] To address the issues of frequency response variations due to upper loads and the lack of dual control over earthquakes and daily vibrations, this application provides a vibration-isolation rubber bearing with quasi-constant frequency function and dual control over vibration and seismic activity.

[0005] The vibration-controlled dual-control seismic isolation rubber bearing with quasi-constant frequency function provided in this application adopts the following technical solution:

[0006] A vibration-controlled dual-control seismic isolation rubber bearing with quasi-constant frequency function includes a connecting plate and several laminated rubber sheets and reinforcing steel plates fixed on the upper part of the connecting plate for absorbing and dissipating seismic energy. The laminated rubber sheets are covered with a rubber protective layer that is fixed to the connecting plate and has an anti-aging effect. A lead core is provided in the middle of the laminated rubber sheets. A fixing steel plate is fixed on the upper part of the lead core. Several arrayed dampers are fixed on the upper part of the fixing steel plate. Several disc springs and rubber elastic elements that uniformly transmit loads are sleeved on the outside of the positioning pins of the dampers. The positioning pins, disc springs and rubber elastic elements are vulcanized together.

[0007] By adopting the above technical solutions, the combination of laminated rubber sheets and stiffening steel plates can provide stable vertical bearing capacity and horizontal deformation capacity. The rubber protective layer prevents the aging of the internal natural rubber and protects the internal structure. The lead core provides initial stiffness and damping, effectively dissipating seismic energy. The fixed steel plate provides the installation foundation for the superstructure. The damper, disc spring, and rubber elastic element work together to further absorb and dissipate seismic energy and improve the seismic isolation performance of the bearing.

[0008] Preferably, the outer side of the fixed steel plate is surrounded by several rotational displacement mechanisms with the same structure and installation method. The rotational displacement mechanism includes a toothed ring that is slidably disposed on the outer side of the fixed steel plate. A first spur gear and a first bevel gear are meshed on one side of the toothed ring and fixed to each other to achieve synchronous rotation. A second bevel gear is meshed on one side of the first bevel gear. A second spur gear is fixed on one side of the second bevel gear. A third spur gear is meshed on one side of the second spur gear. A movable pipe is fixed in the middle of the third spur gear and is rotatably sealed to the oil inlet on one side of the damper.

[0009] By adopting the above technical solution, when the gear ring rotates, the rotational motion is transmitted to the movable tube through a series of gear transmissions, so that the movable tube can rotate relative to the oil supply port of the damper. This design can realize the dynamic adjustment of the oil flow inside the damper, and flexibly change the damping characteristics of the damper according to different seismic conditions or structural responses, thereby optimizing the seismic isolation performance of the support.

[0010] Preferably, one side of the movable tube is provided with several transverse tilting mechanisms with the same structure and installation method. The transverse tilting mechanism includes a fixed crossbar fixed on the inner wall of the oil tank opening on one side of the damper. A side opening groove is opened on one side of the fixed crossbar. A partition plate is fixed on one side of the inner cavity of the side opening groove. A guide rod is rotatably arranged on one side of the partition plate. Support plates with the same structure are fixed on one side of the guide rod, one side of the partition plate, and one side of the inner cavity of the side opening groove. A fourth spur gear is slidably arranged on one side of the support plate. Two racks with the same structure are meshed on one side of the fourth spur gear.

[0011] By adopting the above technical solution, the transverse flipping mechanism can cooperate with the rotary displacement mechanism and slide on the support plate through the fourth spur gear, and mesh with the two racks respectively, thereby realizing the overall flipping of the liquid blocking block, further adjusting the flow path and flow rate of the oil inside the damper, enhancing the damper's adjustment capability, and enabling the support to better adapt to different seismic excitation and structural deformation conditions.

[0012] Preferably, the inner annular surface of the movable tube is provided with a threaded groove, a side push plate is slidably provided on one side of the threaded groove, a slip ring is provided on one side of the side push plate, an annular rotating shaft is rotatably provided on one side of the slip ring, and a liquid blocking block is rotatably provided on one side of the annular rotating shaft.

[0013] By adopting the above technical solution, when the movable tube rotates, the threaded groove interacts with the side push plate, causing the side push plate to move along the axial direction of the movable tube, which in turn drives the slip ring and the annular rotating shaft to move, thereby causing the liquid blocking block to move.

[0014] Preferably, the outer side of the fixed steel plate is provided with several L-shaped side grooves of the same structure arranged in an array with each other.

[0015] By adopting the above technical solution, the L-shaped side groove can facilitate the installation and concealment of the first spur gear, the first bevel gear, the second bevel gear, and the second spur gear.

[0016] Preferably, the outer circumferential surface of the fixed steel plate is provided with an annular groove that slides with the toothed ring.

[0017] By adopting the above technical solution, the annular groove provides a stable sliding track for the gear ring, ensuring that the gear ring can run smoothly during rotation, reducing friction and wear, and improving the working efficiency and reliability of the rotary displacement mechanism.

[0018] Preferably, an outer handle is fixed on the outer ring side of the toothed ring, and the outer handle is used to drive the toothed ring to rotate around the fixed steel plate.

[0019] By adopting the above technical solution, the external handle provides the operator with a convenient point of force application, facilitating manual drive of the gear ring to rotate and adjust the rotary displacement mechanism. When it is necessary to adjust the support performance, the operator can quickly and accurately change the damping characteristics of the damper by rotating the external handle.

[0020] Preferably, a sloping abutment block is fixed on one side of the fourth spur gear for abutting and limiting the movable abutment plate that is slidably disposed in the side opening groove.

[0021] By adopting the above technical solution, the inclined abutment block can interact with the movable abutment plate during the sliding process of the fourth spur gear to achieve limiting, and at the same time push the fourth spur gear to move and mesh with one of the racks.

[0022] Preferably, a first compression spring is fixedly provided on one side of the movable abutment plate and is fixedly connected to the side wall of the inner cavity of the side opening groove. The first compression spring is used to reset the movable abutment plate.

[0023] By adopting the above technical solution, the first compression spring can provide a restoring force after the movable abutment plate is pushed by the inclined abutment block, so that the movable abutment plate can automatically return to the initial position after the transverse flipping mechanism completes the corresponding action, so as to prepare for the next action and ensure the cyclic working performance of the mechanism.

[0024] Preferably, a second compression spring is fixedly provided on the side of the fourth spur gear away from the inclined surface abutment block and is fixedly connected to one side wall of the slip ring.

[0025] By adopting the above technical solution, after the transverse flipping mechanism has completed its operation, the second compression spring can also help the fourth spur gear return to its initial position, so that the fourth spur gear can mesh with another rack.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By utilizing the nonlinear vertical dynamic stiffness of disc springs and rubber elastic elements, the vertical frequency of the vibration isolation system fluctuates within a very small range when the upper load changes, achieving a quasi-constant frequency effect. At the same time, the rubber bearings composed of lower laminated rubber sheets, stiffening steel plates, lead cores, and rubber protective layers can meet the horizontal seismic isolation requirements. Furthermore, the bearings absorb and dissipate energy through horizontal deformation, significantly reducing the transmission of seismic or wind-induced vibration energy to the upper structure.

[0028] 2. The rubber bearing body, composed of laminated rubber sheets, stiffening steel plates, lead cores, and rubber protective layers, undergoes horizontal deformation to absorb and dissipate energy, significantly reducing the transmission of seismic or wind-induced vibration energy to the superstructure. At the same time, disc springs and rubber elastic elements adjust the vertical dynamic stiffness, allowing it to maintain approximately constant frequency characteristics under different deformations, thereby improving the stability and safety of seismic isolation performance and achieving dual control of vibration and shock.

[0029] 3. By vulcanizing multiple disc springs, rubber elastic elements, and locating pins together, the problem of inaccurate disc spring positioning and subsequent large fluctuations in the product's vertical natural frequency due to misalignment is solved. Simultaneously, it effectively ensures that the upper load is evenly transferred to the lower structure. The disc springs are isolated from each other by the rubber elastic elements, which not only effectively improves the problem of vertical dynamic stiffness amplification during micro-vibrations when disc springs are connected in series or parallel, but also ensures that the upper load is evenly transferred to the lower structure through the even arrangement of multiple sets, improving product stability and extending its service life. Attached Figure Description

[0030] Figure 1 This is an overall schematic diagram of the present application;

[0031] Figure 2 This is a schematic diagram showing the positions of the laminated rubber sheet and the reinforcing steel plate in this application;

[0032] Figure 3 This is an explosion diagram of the laminated rubber sheet and reinforcing steel plate of this application;

[0033] Figure 4 This is an enlarged schematic diagram of the rotary displacement mechanism structure of this application;

[0034] Figure 5 This is a schematic diagram of the connection between the transverse tilting mechanism and the rotary displacement mechanism of this application;

[0035] Figure 6 This is an enlarged view showing the connection between the transverse tilting mechanism and the rotary displacement mechanism of this application;

[0036] Figure 7 This diagram illustrates the connection relationship between the fixed crossbar and the internal structure of the slip ring in this application.

[0037] Figure 8 An exploded view of the connection relationship between the slip ring and the liquid-blocking block in this application;

[0038] Figure 9 This is an enlarged schematic diagram of one side of the internal cavity structure of the side opening groove in this application;

[0039] Figure 10 This is a schematic diagram showing the connection relationship between the rack and the fourth spur gear in this application;

[0040] Figure 11 This is an enlarged view of the frontal contact relationship between the inclined abutment block and the movable abutment plate in this application;

[0041] Figure 12 This is a cross-sectional view showing the connection relationship between the fourth spur gear, the slip ring, and the side push plate in this application.

[0042] Figure 13 Enlarged view of the liquid-blocking block of this application being flipped and replaced in an oil tank;

[0043] Figure 14 This is an enlarged view of the inclined abutment block of this application abutting against the movable abutment plate when it returns;

[0044] Figure 15 This is a cross-sectional view of the disc spring, rubber elastic element, and locating pin of this application.

[0045] Reference numerals: 100, connecting plate; 101, laminated rubber sheet; 102, reinforcing steel plate; 103, lead core; 104, rubber protective layer; 105, damper; 106, disc spring; 107, rubber elastic element; 108, fixing steel plate; 109, locating pin;

[0046] 200. Rotary displacement mechanism; 201. Gear ring; 202. First spur gear; 203. First bevel gear; 204. Second bevel gear; 205. Second spur gear; 206. Third spur gear; 207. External handle; 208. Annular slide groove; 209. L-shaped side groove; 210. Movable tube; 211. Threaded groove; 212. Slip ring; 213. Liquid-blocking block; 214. Side push plate; 215. Annular rotating shaft;

[0047] 300. Lateral tilting mechanism; 301. Fixed crossbar; 302. Side opening slot; 303. Divider plate; 304. Guide rod; 305. Support plate; 306. Fourth spur gear; 307. Rack; 308. Movable abutment plate; 309. First compression spring; 310. Inclined abutment block; 311. Second compression spring. Detailed Implementation

[0048] The following is in conjunction with the appendix Figures 1-15 This application will be described in further detail.

[0049] This application discloses a vibration-controlled dual-control seismic isolation rubber bearing with quasi-constant frequency function.

[0050] Reference Figures 1-5 A vibration-controlled dual-control seismic isolation rubber bearing with quasi-constant frequency function includes a connecting plate 100 for stable connection with the main structure. The entire device has two connecting plates 100, located at the upper and lower parts of the device respectively. Both connecting plates 100 are provided with threaded holes for fixing to the main structure with high-strength bolts. A lead core 103 is provided in the middle of the upper surface of the lower connecting plate 100. Several stacked rubber sheets 101 with the same structure are sleeved on the outside of the lead core 103. A stiffening steel plate 102 for reinforcement is provided between the stacked rubber sheets 101, and the layered arrangement allows the stacked rubber sheets 101 and the stiffening steel plate 102 to cooperate with each other to absorb and dissipate seismic energy.

[0051] Reference Figures 1-5 , Figure 15 A fixing steel plate 108 is fixedly provided on the upper part of the laminated rubber sheet 101 and the reinforcing steel plate 102, and a rubber protective layer 104 is sleeved on the outside of the laminated rubber sheet 101 and the reinforcing steel plate 102 to prevent the aging of the internal natural rubber. The upper and lower parts of the rubber protective layer 104 are fixedly connected to the lower surface of the fixing steel plate 108 and the upper surface of the lower connecting plate 100, respectively, thereby sealing the laminated rubber sheet 101 and the reinforcing steel plate 102 and preventing them from being affected by the humid environment and dust. A ring array is placed around the upper surface of the fixing steel plate 108. The system is equipped with several dampers 105, and the dampers 105 have the same structure. Each damper 105 includes a positioning pin 109 and a piston. The surface of the positioning pin 109 is fixedly connected to the lower surface of the upper connecting plate 100. At the same time, several disc springs 106 are sleeved on the outside of the positioning pin 109 of the damper 105. The outside of the positioning pin 109 is made into a smooth surface, which can also be called a stopper. The disc springs 106 are connected in series or in parallel to obtain the desired load characteristic curve and achieve the purpose of uniformly transmitting the load.

[0052] By combining disc springs 106 in series, parallel, or other ways, the desired load characteristic curve can be obtained. Multiple disc springs 106, rubber elastic elements 107, and locating pins 109 are vulcanized together to form an assembly. The disc springs 106 are isolated from each other by the rubber elastic elements 107. This not only effectively improves the problem of vertical dynamic stiffness amplification during micro-vibrations when disc springs 106 are connected in series or parallel, but also improves product stability and extends its service life.

[0053] It should be noted that the preferred embodiment of the disc spring 106 and the rubber elastic element 107 is a combination of the disc spring 106 and the natural rubber elastic element 107. The polymer rubber elastic assembly includes a protective wrapping around the disc spring 106 and a natural rubber component sandwiched between several disc springs 106. This improves the overall stiffness and damping coordination, as well as the quasi-constant frequency characteristics, multi-dimensional damping capacity, and enhanced durability. This enhances the comprehensive performance of the vibration and seismic isolation rubber bearing. The combination of disc spring 106 and natural rubber elastic element 107 has a short stroke, small vertical deformation, and high vertical load-bearing capacity. In earthquake simulation tests, the bearing with the combination of disc spring 106 and natural rubber element shows excellent damping effect, reducing acceleration response by 40%-60% and displacement response by 30%-50%.

[0054] Meanwhile, research shows that the disc spring 106, rubber elastic element 107, and damper 105 work together to effectively solve the problem of vertical dynamic stiffness amplification during micro-vibrations. The principle of parallel connection is based on the stiffness matching formula: Keq=Ks1+Kr1+Kd11, where Ks, Kr, and Kd are the stiffnesses of disc spring 106, rubber elastic element 107, and damper 105, respectively. By precisely designing the parameters of each component, a reasonable stiffness matching is achieved, ensuring that the system can maintain a low vertical dynamic stiffness under micro-vibration, thereby effectively suppressing vibration amplification, ensuring structural safety and stable equipment operation, and providing significant results in solving micro-vibration problems in practical applications.

[0055] When the disc spring 106, rubber elastic element 107, and damper 105 work together and are connected in series, i.e., they bear the same force, and the total displacement is the sum of their individual deformations, then the formula for calculating the total stiffness should be:

[0056]

[0057] At the same time, the laminated rubber sheet 101 and the stiffening steel plate 102 absorb and dissipate energy through horizontal deformation, significantly reducing the transmission of earthquake or wind vibration energy to the upper structure, thereby achieving the technical effect of efficient energy dissipation and ensuring the rationality of vertical bearing capacity of the upper load energy being evenly transmitted to the lower structure.

[0058] Reference Figures 3-8A plurality of rotary displacement mechanisms 200 are arranged around the outer side of the fixed steel plate 108, and the rotary displacement mechanisms 200 have the same structure and installation method. Each rotary displacement mechanism 200 includes a toothed ring 201 that slides on the outer annular surface of the fixed steel plate 108, and an annular groove 208 with a smooth inner surface is formed in the middle of the outer annular surface of the fixed steel plate 108. The inner cavity size of the annular groove 208 is the same as the size of the toothed ring 201. At the same time, the upper and lower surfaces of the toothed ring 201 are both made of smooth surfaces and are connected to the annular groove. 208 is a sliding arrangement, and several L-shaped side grooves 209 are formed on the outer ring side of the fixed steel plate 108. The L-shaped side grooves 209 have the same structure and are arranged in an array. A first spur gear 202 is rotatably arranged on the bottom surface of the inner cavity of the L-shaped side grooves 209 on one side of the gear ring 201, and the first spur gear 202 is meshed with the gear ring 201. A first bevel gear 203 is fixed on the upper part of the first spur gear 202, and a second bevel gear 204 is arranged on one side of the first bevel gear 203. The first bevel gear 203 meshes with the second bevel gear 204, allowing the first bevel gear 203 to transmit rotational power to the second bevel gear 204, thereby changing the direction of rotation from X-axis to Y-axis. A second spur gear 205 is fixedly mounted on the side of the second bevel gear 204 away from the first bevel gear 203. The second spur gear 205 is rotatably mounted on the inner wall of the L-shaped side groove 209, thus supporting the rotation of the second bevel gear 204 and the second spur gear 205. A third spur gear 206 is meshed on one side of the 05, and the middle of the third spur gear 206 is fixedly penetrated by the movable tube 210. This allows the gear ring 201 to rotate synchronously with the fixed first spur gear 202 and the first bevel gear 203, which in turn drive the fixed second bevel gear 204 and the second spur gear 205 to rotate. The second spur gear 205 then transmits power to the third spur gear 206, thereby driving the fixed third spur gear 206 and the movable tube 210 to rotate synchronously.

[0059] Reference Figures 3-8 The two ends of the movable tube 210 are rotatably connected to the openings connecting the damper 105 body and the oil tank (via means such as...). Figure 6 The sealing structure shown is used to seal the oil, thereby allowing the oil supply channel between the damper 105 body and the oil tank to rotate while being sealed, thus facilitating subsequent operations.

[0060] Reference Figures 3-8 A threaded groove 211 is fixedly provided on the inner annular surface of the movable tube 210, and the inner cavity of the threaded groove 211 is set as a smooth surface. The groove of the threaded groove 211 and the cylindrical protrusion provided on one side of the side push plate 214 are slidably disposed relative to each other. The structure of the cylindrical protrusion of the side push plate 214 (e.g.) Figure 7 As shown), and the side push plate 214 is connected to the threaded groove 211 (as shown). Figure 6 As shown), a slip ring 212 is slidably disposed on the inner annular surface of the movable tube 210 away from the threaded groove 211, and vertically flat surfaces are provided on both sides of the slip ring 212 (such as...). Figure 8 As shown), the vertical flat surfaces on both sides of the slip ring 212 are rotatably connected to one side surface of the side push plate 214, thereby limiting the slip ring 212 through the side push plate 214. At the same time, through the connection between the side push plate 214 and the threaded groove 211, the threaded groove 211 can drive the side push plate 214 to move while rotating with the movable tube 210. Thus, through the limiting effect of the side push plate 214 and the slip ring 212, the slip ring 212 is driven to move synchronously.

[0061] Several identical protrusions (such as...) are arranged around one side surface of the slip ring 212 at intervals. Figure 8 As shown), a ring-shaped rotating shaft 215 is rotatably arranged in the middle of several protrusions, and several liquid-blocking blocks 213 are rotatably arranged on the ring-shaped rotating shaft 215. The several liquid-blocking blocks 213 are rotatably arranged around the ring-shaped rotating shaft 215 to form a conical circle, and the diameter of the side of the conical circle away from the ring-shaped rotating shaft 215 is smaller than the diameter of the side that is connected to the ring-shaped rotating shaft 215. Since the liquid-blocking blocks 213 are connected to the ring-shaped rotating shaft 215 and the liquid-blocking blocks 213 are conical circles, the several liquid-blocking blocks 213 can be rotated by less than 45 degrees on the ring-shaped rotating shaft 215, thereby expanding the opening on the small diameter side of the liquid-blocking blocks 213, thereby changing the oil flow rate. At the same time, the piston changes the lifting rate of the positioning pin 109 of the damper 105.

[0062] Reference Figures 3-8 Several liquid-blocking blocks 213 are rotatably disposed between protrusions spaced apart on one side of the slip ring 212, thereby making the liquid-blocking blocks 213 and the slip ring 212 rotatably connected. This allows the slip ring 212 to support and limit the liquid-blocking blocks 213. An outer handle 207 that can drive the toothed ring 201 to rotate is fixedly disposed on the outer ring side of the toothed ring 201. The toothed ring 201 is rotated around the fixed steel plate 108 by manual rotation of the outer handle 207, thereby driving the entire rotary displacement mechanism 200 to operate.

[0063] The outer handle 207 is fixedly connected to the gear ring 201. When the outer handle 207 rotates, it will drive the gear ring 201 to rotate around the inner cavity of the annular groove 208 opened on the outer ring surface of the fixed steel plate 108. When the gear ring 201 rotates, it will drive the first spur gear 202 meshing with it to rotate synchronously. When the first spur gear 202 rotates, it will drive the first bevel gear 203 fixed on its upper part to rotate synchronously. During the rotation of the first bevel gear 203, it will drive the second bevel gear 204 meshing on one side to rotate. When the second bevel gear 204 rotates, it will drive the second spur gear 205 fixed on the side away from the first bevel gear 203 to rotate on the inner wall of the L-shaped side groove 209. Thus, through the second spur gear 205 meshing with the side of the first bevel gear 203, the second spur gear 205 will rotate on the inner wall of the L-shaped side groove 209. The third spur gear 206 rotates, which in turn drives the movable tube 210, which is fixedly connected to it, to rotate. The movable tube 210 is sealed and rotatably connected to the opening at the connection between the damper 105 body and the oil tank. When the third spur gear 206 rotates, the movable tube 210 will rotate accordingly. The rotation of the movable tube 210 will drive the threaded groove 211 fixedly installed in its inner cavity to rotate. During the rotation, the side push plate 214 slidably installed in the threaded groove 211 will move laterally. The side push plate 214 will then drive the slip ring 212 rotatably installed on one side to move. As the slip ring 212 moves, it will drive the liquid blocking block 213 rotatably connected to the protrusion on one side through the annular rotating shaft 215 to move.

[0064] Reference Figures 5-14 A plurality of transverse tilting mechanisms 300 are provided on one side of the movable tube 210, and the plurality of transverse tilting mechanisms 300 are identical in structure and installation method. Each transverse tilting mechanism 300 includes a fixed crossbar 301 fixedly installed on the inner wall of the oil tank opening on the side of the damper 105. The outer surface of the fixed crossbar 301 away from the oil tank of the damper 105 is slidably disposed with the inner ring surface of the movable tube 210, and simultaneously slidably connected to the surface of one side of the side push plate 214. A side opening groove 30 with a smooth inner surface is provided on the side of the fixed crossbar 301 located on the side push plate 214. 2. A partition plate 303 is fixedly installed in the middle of the inner wall of the side opening groove 302 away from the side push plate 214. The partition plate 303 is located in the middle of the side opening groove 302, which divides the inner cavity of the side opening groove 302 into upper and lower channels. The end of the partition plate 303 away from the side push plate 214 is set as a semi-circular shape, and the upper part of the other end is set as an inclined surface. A guide rod 304 is rotatably installed at one end of the inclined surface, thereby realizing the guiding effect on the structure sliding in the side opening groove 302, so that it can reciprocate within the side opening groove 302.

[0065] Reference Figures 5-14A support plate 305 is fixedly installed on one side of the upper surface of the guide rod 304, and support plates 305 are also installed on one side of the upper and lower surfaces of the partition plate 303. A support plate 305 is also installed on one side of the bottom of the inner cavity of the side opening groove 302. The support plates 305 fixedly installed on the side opening groove 302, partition plate 303, and guide rod 304 are at the same height and located on the same horizontal plane. The support plates 305 fixed on the guide rod 304 and the support plates 305 fixed on the upper part of the partition plate 303 are staggered, thus ensuring that the guide rod 304 can rotate without being affected when carrying the support plates 305. Furthermore, the upper part of the partition plate 303 and the side opening groove... Several racks 307 are arranged between the channels formed by 302. The racks 307 are structurally identical, but the direction of their teeth is opposite. The number of racks 307 is greater than two, but two is optimal. One rack 307 is fixedly connected to the upper surface of the partition plate 303, while the other is fixed to the upper surface of the inner cavity of the side opening groove 302. It should be noted that the two racks 307 with opposite teeth are staggered. The two racks 307 can respectively mesh with the fourth spur gear 306 that is slidably arranged on the support plate 305. Due to the staggered arrangement of the two racks 307, the fourth spur gear 306 can only mesh with one rack 307 at a time.

[0066] Reference Figures 5-14 And at one end of the fourth spur gear 306 located in the inner cavity of the side opening groove 302, there is a sloped abutment block 310 with both sides set as sloped surfaces (e.g. Figure 8 , 11 As shown), and on the side of the inclined abutment block 310 away from the fourth spur gear 306, it abuts against the movable abutment plate 308 that is slidably disposed in the inner cavity of the side opening groove 302 (as shown). Figure 11As shown), the sliding distance of the movable abutment plate 308 within the side opening groove 302 on one side of the partition plate 303 will not exceed one end of the semi-circular shape of the partition plate 303. This allows the partition plate 303 to maintain its position without affecting the side wall fixation of the side opening groove 302, while simultaneously enabling better contact between the inclined abutment block 310 and the movable abutment plate 308. Furthermore, the movable abutment plate 308 has an inclined surface on the side away from the semi-circular surface of the partition plate 303, which is opposite to the inclined surface of the inclined abutment block 310 and has the same inclination angle. Therefore, when the fourth spur gear 306 moves with the inclined abutment block 310 from the side push plate 214 towards the movable abutment plate 308 and they abut against each other, the movable abutment plate 308... Under the action of the movable abutment plate 308, the fourth spur gear 306 is pushed to one side to move. The width of the movable abutment plate 308 allows the displaced fourth spur gear 306 to mesh with one of the racks 307. At the same time, a second compression spring 311 is fixedly provided on the side of the fourth spur gear 306 away from the inclined abutment block 310. One end of the second compression spring 311 is fixedly connected to the retraction groove opened in the middle of the vertical plane on both sides of the slip ring 212. Therefore, when the movable abutment plate 308 abuts against the inclined abutment block 310 and the fourth spur gear 306 moves, the fourth spur gear 306 will move into the retraction groove provided on the side of the slip ring 212 and squeeze the second compression spring 311.

[0067] It should be noted that a fixed shaft is provided on the side where the fourth spur gear 306 is fixedly connected to the second compression spring 311. The length of this fixed shaft is such that the fourth spur gear 306 can slide on the support plate 305 and also insert into the retraction grooves provided on both sides of the slip ring 212. At the same time, it can also serve as a fulcrum for the rotation of the slip ring 212 and the side push plate 214. Thus, when the slip ring 212 moves, it drives the fourth spur gear 306 to move on the support plate 305. A crossbar is fixedly provided on the surface of the fixed shaft, so that the fourth spur gear 306 can be limited with the retraction grooves provided on the side of the slip ring 212. When the fourth spur gear 306 rotates, it drives the slip ring 212 to rotate. The inclined abutment block 310, the fourth spur gear 306, and the second compression spring 311 are located on the same axis.

[0068] Both the first compression spring 309 and the second compression spring 311 use the calculation formula of Taijinlihuang single spring: F=Kx, where F is the external force on the spring, unit: K is the spring constant, unit: N / m, and x is the deformation of the spring, unit: m. Then, the elastic force of the alloy spring is calculated so that it can be used in this device.

[0069] When the fourth spur gear 306 moves to one side of the semi-circular surface of the partition plate 303, the engagement of the fourth spur gear 306 with one of the racks 307 causes the fourth spur gear 306 to rotate, thereby driving the slip ring 212 to rotate, which in turn causes the liquid blocking block 213 to rotate, and the opening with the smallest diameter of the liquid blocking block 213 to reverse and complete the conversion. At this time, the inclined abutment block 310 and the front of the movable abutment plate 308 no longer abut against each other. At this time, under the action of the second compression spring 311, the fourth spur gear 306 is pushed back to its original position, so that the inclined abutment block 310 can abut against the side of the movable abutment plate 308. Then, when the fourth spur gear 306 returns from the channel at the bottom of the partition plate 303, it will drive the movable abutment plate 308 to move.

[0070] Reference Figures 5-14 Meanwhile, a first compression spring 309 is fixedly installed on one side of the movable abutment plate 308 where the slope is provided (e.g., Figure 7 As shown), the other end of the first compression spring 309 is fixedly connected to the side wall of the side opening groove 302. The first compression spring 309 mainly resets the movable abutment plate 308 when the support plate 305 moves again. At the same time, the fourth spur gear 306 is no longer restricted by the abutment of the front of the movable abutment plate 308. When the fourth spur gear 306 returns to the upper channel formed by the partition plate 303 and the side opening groove 302 through the guide rod 304, it will mesh with another misaligned rack 307. Since the rack 307 and the other rack 307 are arranged opposite to each other, the fourth spur gear 306 will rotate in the opposite direction when meshing with it, thereby driving the slip ring 212 and the liquid blocking block 213 to reset.

[0071] It should be noted that the end connecting the partition plate 303, guide rod 304, and fixed crossbar 301 must extend beyond the opening of the movable tube 210 into the tank of the damper 105 (e.g., Figure 5 As shown in the figure, the slip ring 212 and the liquid blocking block 213 can rotate and change direction inside the tank, avoiding the failure caused by space limitation when directly replacing them in the movable tube 210. By flipping the slip ring 212 and the liquid blocking block 213, the oil filling speed in the damper 105 tank is controlled, thereby adjusting the lifting speed of the positioning pin 109 of the damper 105 body, thus effectively suppressing small vibrations, effectively controlling daily vibrations such as wind vibration and traffic vibration, and improving the comfort and durability of the structure.

[0072] The rubber protective layer 104 is made of weather-resistant rubber with excellent weather resistance, which can maintain its physical and chemical properties when exposed to harsh environments such as sunlight, rain and temperature changes for a long time. The laminated rubber sheet 101 and the rubber elastic element 107 are made of natural rubber with good elasticity, high strength, good wear resistance, excellent processing performance, easy bonding with other materials, and good electrical insulation properties. The rubber elastic element 107 wrapped around the disc spring 106 can be the SS7 series rubber elastic element 107 of Zhengzhou Tianyuan Rubber Co., Ltd., but since they are existing technologies, they will not be described in detail here.

[0073] Through the interlocking and limiting connection between the fourth spur gear 306 and the slip ring 212, when the side push plate 214 pushes the slip ring 212 to move, it will drive the fourth spur gear 306 to move on the support plate 305. During the movement, guided by the guide rod 304, the fourth spur gear 306 moves into the upper channel formed by the partition plate 303 and the side opening groove 302. After the fourth spur gear 306 passes the inclined surface of the partition plate 303, the inclined surface abutment block 310 provided on one side of the fourth spur gear 306 abuts against the two inclined surfaces provided on the movable abutment plate 308. Then, under the continuous movement of the fourth spur gear 306, the inclined abutment block 310 abuts against the front of the movable abutment plate 308, thereby causing the fourth spur gear 306 to shift under the influence of the movable abutment plate 308 and mesh with one of the racks 307, thereby compressing the second compression spring 311. During the meshing process of the fourth spur gear 306 and the rack 307, the fourth spur gear 306 will drive the slip ring 212 and the liquid blocking block 213 to rotate 180 degrees, thereby changing the direction of the opening with the smallest diameter of the liquid blocking block 213. When the liquid blocking block 213 rotates... After a 180-degree rotation, the fourth spur gear 306 moves to the semi-circular surface of the partition plate 303 and continues to move along the channel. Simultaneously, the inclined abutment block 310 separates from the front of the movable abutment plate 308, but the sides of the inclined abutment block 310 and the movable abutment plate 308 will engage in abutment and limit the movement. This causes the inclined abutment block 310 to move the movable abutment plate 308 and compress the first compression spring 309 as the fourth spur gear 306 returns. During the return stroke, the fourth spur gear 306 pushes the guide rod 304 to rotate, thereby clearing the channel. The fourth spur gear 306 can follow the slip ring 212 back into the inner cavity of the movable tube 210. When the liquid blocking block 213 needs to be flipped again, the above action can be repeated. However, the difference is that the fourth spur gear 306 is no longer affected by the movable abutment plate 308 and will not be displaced. At this time, the fourth spur gear 306 and the rack 307 with opposite teeth can mesh with each other, thereby flipping the slip ring 212 and the liquid blocking block 213 in the opposite direction, so that the liquid blocking block 213 can be flipped and reset, thereby changing the flow rate of the liquid inside the oil tank.

[0074] The existing technology only uses disc springs 106, and the disc springs 106 are in direct contact when stacked. Under micro-vibration conditions, the friction between the contact surfaces when the disc springs 106 are stacked and in contact will lead to problems such as large vertical dynamic stiffness (the dynamic stiffness coefficient is the cube of the number of disc springs 106 stacked) and unstable vertical dynamic stiffness coefficient.

[0075] This application employs a disc spring 106 and a rubber elastic element 107. The disc springs 106 do not directly contact each other, while the rubber elastic element 107 is placed. The disc springs 106, rubber elastic element 107, and positioning pin 109 are vulcanized together. During micro-vibration, the disc springs 106 are stacked and in direct contact to generate frictional force, which is released through the shear deformation of the rubber. Therefore, the vertical dynamic stiffness coefficient is small and stable. This fully utilizes the characteristics of the disc spring 106, such as short stroke, small vertical deformation, and high vertical load-bearing capacity, and also makes reasonable use of the characteristics of the rubber elastic element 107, such as small horizontal shear modulus and stable performance. This not only effectively improves the problem of vertical dynamic stiffness amplification during micro-vibration when disc spring groups are connected in series or parallel, but also achieves constant product frequency characteristics that do not change with the upper load, and improves product stability and extends its service life.

[0076] The disc spring 106, rubber elastic element 107, and positioning pin 109 are vulcanized together, which solves the problem of inaccurate positioning of the disc spring 106 and the resulting large fluctuations in the vertical natural frequency of the product. At the same time, it effectively ensures that the upper load can be evenly transferred to the lower structure through this product.

[0077] The implementation principle of a vibration-isolation rubber bearing with quasi-constant frequency function in this application embodiment is as follows: When external excitation such as earthquake or wind vibration acts on the structure, the rubber bearing composed of laminated rubber sheet 101, stiffening steel plate 102, lead core 103 and rubber protective layer 104 deforms, absorbing and dissipating energy, thereby reducing the transmission of earthquake or wind vibration energy to the upper structure. At the same time, the vertical dynamic stiffness is adjusted by disc spring 106, rubber elastic element 107 and damper 105, so that it maintains an approximately constant frequency characteristic under different deformations, improving the stability and safety of the seismic isolation performance, and realizing vibration-isolation dual control.

[0078] Simultaneously, by manually rotating the outer handle 207, the outer handle 207 drives the gear ring 201 to rotate. As the gear ring 201 rotates, it drives the first spur gear 202 to rotate synchronously. The first spur gear 202 then drives the first bevel gear 203 to rotate synchronously. During its rotation, the first bevel gear 203 drives the second bevel gear 204 to rotate, which in turn drives the second spur gear 205 to rotate. Simultaneously, the rotation of the second spur gear 205 drives the third spur gear 206 to rotate, and simultaneously drives the movable tube 210 to rotate synchronously. The movable tube 210 is sealed and rotated through the opening at the connection between the damper 105 body and the oil tank. When the third spur gear 206 rotates and drives the movable tube 210 to rotate, the movable tube 210 will drive the threaded groove 211 fixed in its inner cavity to rotate. During the rotation, the side push plate 214 slidably set in the threaded groove 211 will move laterally. Then, the side push plate 214 will drive the slip ring 212 rotatably set on one side to move. At the same time, the slip ring 212 will drive the liquid blocking block 213 to move.

[0079] As the slip ring 212 moves, it will drive the fourth spur gear 306 to move on the support plate 305 towards the partition plate 303. Under the guidance of the guide rod 304, the fourth spur gear 306 will move into the upper channel formed by the partition plate 303 and the side opening groove 302. After the fourth spur gear 306 passes the inclined surface of the partition plate 303, the inclined surface of the inclined surface abutment block 310 abuts against the inclined surface of the movable abutment plate 308, and then slides against the front surface of the movable abutment plate 308. At this time, the fourth spur gear 306 will be displaced under the influence of the movable abutment plate 308 and will mesh with one of the racks 307. Then, by compressing the second compression spring 311, it will move into the retraction groove provided on the side of the slip ring 212. When the fourth spur gear 306 meshes with the rack 307, the fourth spur gear 306 will drive the slip ring 212 and the liquid blocking block 213 to rotate 180 degrees, thereby increasing the diameter of the liquid blocking block 213. The direction of the smallest opening is changed, and at the same time, the fourth spur gear 306 moves to the semi-circular surface of the partition plate 303 and continues to move. Meanwhile, the inclined abutment block 310 separates from the front of the movable abutment plate 308. Under the action of the second compression spring 311, the fourth spur gear 306 is pushed back to its original position, so that the inclined abutment block 310 abuts against the side of the movable abutment plate 308 and is limited. As the inclined abutment block 310 returns with the fourth spur gear 306, it drives the movable abutment plate 308 to move and compress the first compression spring 309. During the return stroke, the fourth spur gear 306 pushes the guide rod 304 to flip, so that the fourth spur gear 306 can follow the slip ring 212 back into the inner cavity of the movable tube 210. The flipping of the liquid blocking block 213 will change the flow rate of the liquid inside the oil tank, thereby controlling the extension and retraction rate of the positioning pin 109 of the damper 105, reducing the speed ratio of its extension or retraction, thereby improving the vibration isolation performance.

[0080] When the liquid blocking block 213 needs to be flipped again, the above action can be repeated. However, the difference is that the fourth spur gear 306 is not displaced by the movable abutment plate 308. Therefore, the fourth spur gear 306 and the rack 307 with opposite teeth can mesh with each other, thereby flipping the slip ring 212 and the liquid blocking block 213 in the opposite direction, so that the liquid blocking block 213 can be flipped and reset.

[0081] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A vibration-controlled dual-control seismic isolation rubber bearing with quasi-constant frequency function, characterized in that: The utility model provides a kind of seismic energy dissipation device, including connecting plate (100) and the upper part of connecting plate (100) is fixed with several laminated rubber sheet (101) and stiffened steel plate (102) for absorbing and dissipating seismic energy, the outside of laminated rubber sheet (101) is equipped with with connecting plate (100) fixed sealing in turn to reach the rubber protective layer (104) of anti-aging, the middle part of laminated rubber sheet (101) is equipped with lead core (103), the upper part of lead core (103) is fixed with fixed steel plate (108), the upper part of fixed steel plate (108) is fixed with several arrayed dampers (105), the positioning pin (109) outside of damper (105) is equipped with several even load transmission disc spring (106) and rubber elastic element (107), and positioning pin (109), disc spring (106) and rubber elastic element (107) are vulcanized together and formed; The outside of fixed steel plate (108) is surrounded by several rotating displacement mechanisms (200) which are the same in structure and installation, the rotating displacement mechanisms (200) include a gear ring (201) slidingly arranged outside the fixed steel plate (108), the gear ring (201) is engaged on one side with a first spur gear (202) and a first bevel gear (203) fixed to each other to rotate synchronously, the first bevel gear (203) is engaged on one side with a second bevel gear (204), the second bevel gear (204) is fixed on one side with a second spur gear (205), the second spur gear (205) is engaged on one side with a third spur gear (206), the third spur gear (206) is fixed in the middle with a movable pipe (210) rotatably and sealingly connected with an oil outlet on one side of the damper (105); The movable pipe (210) is provided on one side with several horizontal moving and overturning mechanisms (300) which are the same in structure and installation, the horizontal moving and overturning mechanisms (300) include a fixed horizontal rod (301) fixed on the inner wall of an oil tank opening on one side of the damper (105), the fixed horizontal rod (301) is provided on one side with a side opening slot (302), the side opening slot (302) is fixed on one side with a partition plate (303), the partition plate (303) is rotatably provided on one side with a guide rod (304), the guide rod (304) and the partition plate (303) are fixed on one side surface and the inner surface of the side opening slot (302) with support plates (305) which are the same in structure, the support plates (305) are slidingly provided on one side with a fourth spur gear (306), the fourth spur gear (306) is engaged on one side with two rack gears (307) which are the same in structure.

2. The dual-control rubber bearing with quasi-constant frequency function according to claim 1, characterized in that: The movable pipe (210) is provided on one side with a side pushing plate (214) slidingly arranged in a threaded groove (211), the side pushing plate (214) is provided on one side with a sliding ring (212), the sliding ring (212) is rotatably provided on one side with a ring-shaped rotating shaft (215), the ring-shaped rotating shaft (215) is rotatably provided on one side with a liquid blocking block (213).

3. The dual-control rubber bearing with quasi-constant frequency function according to claim 1, characterized in that: The fixed steel plate (108) is externally provided with a plurality of L-shaped side grooves (209) which are arranged in an array and have the same structure.

4. The dual-control rubber bearing with quasi-constant frequency function according to claim 1, characterized in that: The fixed steel plate (108) is externally provided with a plurality of L-shaped side grooves (209) which are arranged in an array and have the same structure.

5. The dual-control rubber bearing with quasi-constant frequency function according to claim 1, characterized in that: The tooth ring (201) is externally provided with an external handle (207) which is used to drive the tooth ring (201) to rotate around the fixed steel plate (108).

6. The dual-control rubber bearing with quasi-constant frequency function according to claim 1, characterized in that: The fourth spur gear (306) is provided with a slope abutting block (310) on one side which is used to abut and limit the movable abutting plate (308) which is slidably arranged in the side opening groove (302).

7. The dual-control rubber bearing with quasi-constant frequency function according to claim 6, characterized in that: The movable abutting plate (308) is provided with a first compression spring (309) on one side which is fixed to the side wall of the inner cavity of the side opening groove (302), and the first compression spring (309) is used to reset the movable abutting plate (308).

8. The dual-control rubber bearing with quasi-constant frequency function according to claim 1, characterized in that: The fourth spur gear (306) is provided with a second compression spring (311) on the side which is away from the slope abutting block (310) and is fixed to the side wall of the sliding ring (212).

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