Disc spring anti-separation seismic isolation support and anti-separation method

Abstract

The present invention belongs to the technical field of seismic isolation bearings, and in particular, to a disc spring anti-separation seismic isolation bearing and an anti-separation method, comprising a connecting plate located on the upper surface of the seismic isolation bearing, wherein the diameter of the connecting plate is greater than the diameter of the rubber shock-absorbing body in the seismic isolation bearing, a butterfly spring group is arranged at the lower surface of the connecting plate and the upper pier, an anti-displacement mechanism is arranged at the edge of the disc of the butterfly spring group, and a synchronization mechanism is arranged at the outer edge of the connecting plate, wherein the synchronization mechanism comprises a gear ring and a transmission gear meshed with the gear ring. The disc spring anti-separation seismic isolation bearing and the anti-separation method can prevent the problem of radial displacement of the butterfly spring group during compression, especially for the situation that the vibration direction is uncertain during an earthquake, the problem of displacement of the butterfly spring group can be avoided, and the force in the extruded butterfly spring group can be uniform, and the problem of unequal deformation height caused by uneven force during the extrusion process can be prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic isolation bearings, and in particular to a disc spring anti-separation seismic isolation bearing and an anti-separation method. Background Art

[0002] In buildings, bridges, LNG / oil storage tanks and other projects, shock-absorbing and seismic isolation systems are usually installed to prevent the buildings from being damaged by internal stress, so as to improve the safety performance of buildings, bridges, LNG / oil storage tanks and other projects. In the prior art, seismic isolation rubber bearings are usually used as seismic isolation bearings. For example, in a torsion-resistant and liftable seismic isolation bearing with the announcement number CN217439231U disclosed on the Chinese patent website, when the seismic isolation bearing is subjected to an upward pulling force, the seismic isolation body can be separated from the lifting cover, which can effectively protect the seismic isolation bearing from being destroyed by the pulling force or causing serious damage, thereby affecting the horizontal seismic isolation performance of the bearing, and maximizing the vertical pressure-bearing performance and horizontal seismic isolation performance of the bearing. However, the following problems still exist:

[0003] Generally, most seismic isolation bearings are used on buildings weighing several tons or even dozens of tons, and have strong compressive resistance. However, when a vibration occurs, the building weighing several tons will fall directly onto the seismic isolation bearing under its own gravity after being lifted upward, causing irreversible damage to the seismic isolation bearing.

[0004] For example, in the anti-separation friction pendulum isolation bearing with the announcement number CN 115538636 A disclosed on the Chinese patent website, the existing friction pendulum isolation bearing cannot remain in a compressed state when tension occurs. The anti-separation friction pendulum isolation bearing achieves that when tension occurs, the anti-separation friction pendulum isolation bearing remains in a compressed state, and its working mechanism has achieved a breakthrough. It installs an anti-separation structure inside the friction pendulum, but for rubber isolation bearings, it can only play the greatest role when installed at the connection between the isolation bearing and the pier, while ordinary springs, such as coil springs and friction springs, when in use: 1) The coil spring has a small elastic force and weak compressive resistance; 2) The friction pendulum spring will always be in a squeezed friction state when there is no vibration. As the use time increases, the friction part may wear, resulting in performance degradation. And because most of the buildings connected to the isolation bearings are cast-in-place concrete buildings, the anti-separation structure used in the isolation bearings cannot be directly installed inside them like the friction pendulum isolation bearings. This results in the need to pre-apply a strong pre-tightening force to the springs in the anti-separation structure when installing the anti-separation structure of the rubber isolation bearings in order to facilitate the pouring of concrete. The greater the elasticity, the greater the pre-tightening force applied, and the greater the difficulty. At the same time, it is also necessary to ensure that the pre-tightening force applied is balanced. Otherwise, it is very easy to cause safety hazards to the entire building due to unbalanced force on the entire isolation bearing. Summary of the invention

[0005] Based on the existing technical problems, the present invention proposes a disc spring anti-separation isolation support and an anti-separation method.

[0006] The present invention provides a disc spring anti-separation isolation support and an anti-separation method, comprising a connecting plate located on the upper surface of the isolation support, wherein the diameter of the connecting plate is greater than the diameter of a rubber shock-absorbing body in the isolation support.

[0007] A butterfly spring group is arranged at the lower surface of the connecting plate and the upper pier, and an anti-displacement mechanism is arranged at the edge of the disc of the butterfly spring group.

[0008] A synchronization mechanism is provided at the outer edge of the connecting plate, and the synchronization mechanism comprises a gear ring and a transmission gear meshing with the gear ring.

[0009] A pre-tightening hole is provided on the surface of the butterfly spring group, and a control mechanism for applying a pre-tightening force to the butterfly spring group is provided on the inner wall of the pre-tightening hole. The control mechanism includes a sleeve fixedly sleeved with the axis of the transmission gear.

[0010] The sleeve is driven to drive the transmission gear to engage with the gear ring, thereby driving the control mechanism distributed in the annular array to synchronously apply a downward preload force to the butterfly spring group.

[0011] Preferably, the anti-displacement mechanism includes a limit slot opened on the outer edge surface of each group of top disc springs in the butterfly spring group, and a limit column with a diameter equal to the width of the limit slot is fixedly installed on the upper surface of the outer edge of each group of bottom disc springs in the butterfly spring group.

[0012] Through the above technical solution, the limiting column can limit each disc in the butterfly spring group within a set area.

[0013] Preferably, a pressure sensor is fixedly mounted on the upper surface of the limiting column, and the sensing end of the pressure sensor senses the pressure of the butterfly spring sheet located on the top thereof when the butterfly spring group reaches the maximum extrusion deformation.

[0014] Through the above technical solution, the pressure sensor can not only detect the compressive pressure of the butterfly spring group, but also know the longitudinal vibration force conditions during an earthquake through pressure sensors at various angles.

[0015] Preferably, the synchronization mechanism also includes a mounting assembly, a pawl assembly and a mounting groove opened on the outer surface of the connecting plate. The gear ring is installed on the inner wall of the mounting groove by means of a ball bearing to realize a rotation movement in a circumferential direction. The pawl assembly engages with the tooth grooves of the gear ring to realize the positioning movement of the gear ring after unidirectional rotation.

[0016] Through the above technical solution, the pawl assembly clamps the gear ring after it rotates in one direction, preventing it from rotating in the opposite direction, thereby preventing the problem of rebound caused by excessive pressure on the butterfly spring group.

[0017] Preferably, the mounting assembly comprises a support plate mounted on the outer surface of the connecting plate, and reinforcing ribs fixedly connected to the connecting plate are fixedly mounted on both the upper and lower surfaces of the support plate.

[0018] The pawl assembly includes a pawl and a pin shaft rotatably connected to the pawl through a bearing and fixed to the upper surface of the support plate, and a torsion spring respectively fixed to the pawl and the pin shaft is sleeved on the surface of the pin shaft.

[0019] Through the above technical solution, the reinforcing ribs can firmly fix the components.

[0020] Preferably, the surface of the sleeve is mounted on the surface of the support plate via a ball bearing, and end bearings are also mounted on the lower surface of the support plate and the outer surface of the sleeve.

[0021] Through the above technical solution, the ball bearing can ensure the axial rotation of the sleeve, and the end bearing can prevent the problem of the sleeve being pulled upward when the butterfly spring group generates huge elastic force when being compressed.

[0022] Preferably, the control mechanism further comprises a threaded sleeve threadedly inserted into the inner wall of the sleeve, and the shape of the inner bottom wall of the sleeve is adapted to a hexagonal wrench;

[0023] The inner top wall of the threaded sleeve is provided with a directional slide groove, the inner wall of the directional slide groove is slidably connected with a directional slider, the top inner wall of the threaded sleeve is slidably connected with a polygonal male plug which always elastically points upward, and the outer surface shape of the polygonal male plug includes but is not limited to any one of a regular quadrilateral, a regular pentagon and a regular hexagon.

[0024] Through the above technical solution, the principle of the air pump pipe connector is adopted to achieve the effect of quick connection and release.

[0025] Preferably, a fixing plate matched with the pre-tightening hole is fixedly installed on the inner wall of the pre-tightening hole, a positioning ball is hinged at the axis of the fixing plate through a rotating shaft, an air pump air pipe connecting female head is fixedly installed on the bottom surface of the positioning ball, a slot matched with the surface of the polygonal male plug is provided on the inner wall of the air pump air pipe connecting female head, and a push rod for lifting the sliding sleeve in the air pump air pipe connecting female head is also fixedly installed on the upper surface of the sleeve.

[0026] Through the above technical solution, the slot can prevent the threaded sleeve from rotating circumferentially along with the sleeve after connection.

[0027] A method for preventing separation of a disc spring anti-separation seismic isolation support, comprising step one, passing the polygonal male plug at the top of the threaded sleeve through the pre-tightening hole and connecting it to the air pump air pipe connecting female head at the top of the butterfly spring group, so that the directional slider is located in the middle or bottom position of the directional slide groove, and finally the bottom of the threaded sleeve is threadedly connected to the sleeve until the directional slider is located at the top position of the directional slide groove.

[0028] Step 2: insert the hexagonal wrench into the bottom of the sleeve, drive the hexagonal wrench to rotate manually or electrically, thereby driving the sleeve and the threaded sleeve to screw in, and gradually pull the butterfly spring group downward to achieve pre-tightening.

[0029] Step 3: When the lower surface of the air pump air pipe connecting female head just contacts the push rod, stop twisting the sleeve, and complete the pouring and solidification of the upper pier and the concrete on the upper pier.

[0030] Step 4. Continue to turn the hexagonal wrench until the push rod pushes the sliding sleeve in the air pump air pipe connecting female head upward to the highest point. At this time, the ball in the air pump air pipe connecting female head slides outward, and the butterfly spring group begins to bounce upward, driving the air pump air pipe connecting female head to instantly detach from the polygonal male plug. Continue to rotate the sleeve to unscrew the threaded sleeve from the bottom of the sleeve.

[0031] Preferably, while driving the hexagonal wrench to rotate in step 2, the transmission gear is driven to engage with the gear ring, thereby driving all the sleeves to rotate synchronously, and the pawl is engaged with the tooth groove of the gear ring to position the gear ring after unidirectional rotation; and when the butterfly spring group is gradually pulled downward, the positioning ball is deflected downward along the rotating shaft.

[0032] When the air pump air pipe connection female connector is instantly separated from the polygonal male plug in the step 4, the butterfly spring assembly squeezes the pressure sensor.

[0033] The beneficial effects of the present invention are:

[0034] 1. By setting up an anti-displacement mechanism, the butterfly spring group can be prevented from radial displacement during the compression process, especially when the vibration direction is uncertain during an earthquake, the butterfly spring group displacement problem can be avoided.

[0035] 2. By setting up a synchronization mechanism, the force in the extrusion butterfly spring group can be evenly distributed, thus preventing the problem of unequal deformation height caused by uneven force during the extrusion process.

[0036] 3. By setting up a control mechanism, a strong preload can be applied to the butterfly spring group. At the same time, it can be automatically loosened after the preload is applied, which is convenient for disassembly and removal. It can also avoid the problem that the preload mechanism is hindered when the butterfly spring group deforms up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a disc spring anti-separation seismic isolation support and an anti-separation method proposed in the present invention;

[0038] Figure 2 A schematic diagram of a disc spring anti-separation seismic isolation support and an anti-separation method proposed in the present invention;

[0039] Figure 3 A disc spring anti-separation isolation support and an anti-separation method proposed by the present invention Figure 1 Enlarged view of point A in the middle;

[0040] Figure 4 A force marking diagram of a pressure sensor of a disc spring anti-separation seismic isolation support and an anti-separation method proposed by the present invention;

[0041] Figure 5 A three-dimensional diagram of a synchronous mechanism of a disc spring anti-separation seismic isolation support and an anti-separation method proposed by the present invention;

[0042] Figure 6 A diagram showing the direction of insertion of a hexagonal wrench driven sleeve for a disc spring anti-separation seismic isolation support and an anti-separation method proposed by the present invention;

[0043] Figure 7 A three-dimensional diagram of an air pump air pipe connection female head of a disc spring anti-separation seismic isolation support and an anti-separation method proposed in the present invention;

[0044] Figure 8 A diagram of the connection between the female end of the air pump air pipe and the polygonal male plug of a disc spring anti-separation seismic isolation support and an anti-separation method proposed by the present invention;

[0045] Fig. 9 A stereoscopic diagram of a female connector for an air pump air pipe connected by a push rod lifting a disc spring anti-separation seismic isolation support and an anti-separation method proposed in the present invention.

[0046] In the figure: 1. connecting plate; 11. gear ring; 12. transmission gear; 13. mounting groove; 14. ball; 15. support plate; 16. reinforcing rib; 17. pawl; 18. pin; 19. torsion spring; 110. ball bearing; 111. end bearing; 2. upper pier; 3. butterfly spring assembly; 31. preload hole; 32. sleeve; 33. threaded sleeve; 34. directional slide groove; 35. directional slider; 36. polygonal male plug; 37. fixing plate; 38. positioning ball; 39. air pump air pipe connecting female head; 310. slot; 311. ejector rod; 4. limit slot; 41. limit column; 42. pressure sensor. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0048] Example 1: Reference Figure 1 as well as Figure 3-Figure 4 , a disc spring anti-separation isolation support, such as Figure 1 As shown, it includes a connecting plate 1 located on the upper surface of the seismic isolation support, and the diameter of the connecting plate 1 is larger than the diameter of the rubber shock-absorbing body in the seismic isolation support.

[0049] like Figure 1 As shown, in order to prevent the separation of the seismic isolation bearing and the upper pier 2 during vibration, a butterfly spring group 3 is provided at the lower surface of the connecting plate 1 and the upper pier 2. The butterfly spring group 3 not only has a strong compressive resistance, but also has a large elastic contact surface, which is suitable for large-volume and high-weight buildings; during vibration, it also has the advantage of large resilience, and can be well elastically connected with the upper pier 2 and the rubber seismic isolation bearing, so that the upper pier 2 and the rubber seismic isolation bearing will not separate during vibration.

[0050] like Figure 3 As shown, in order to prevent the butterfly spring group 3 from being easily displaced horizontally when subjected to vibrations at different angles, an anti-displacement mechanism is provided at the edge of the disc of the butterfly spring group 3 .

[0051] Specifically, the anti-displacement is achieved as follows: the anti-displacement mechanism includes a limit slot 4 provided on the outer edge surface of each group of top disc springs in the disc spring group 3, and a limit column 41 having a diameter equal to the width of the limit slot 4 is fixedly installed on the upper surface of the outer edge of each group of bottom disc springs in the disc spring group 3. The limit column 41 can limit each disc in the disc spring group 3 within a set area.

[0052] In order to detect the stress of the butterfly spring group 3 during vibration in real time, a pressure sensor 42 is fixedly installed on the upper surface of the limit column 41. The sensing end of the pressure sensor 42 senses the pressure of the butterfly spring sheet at the top when the butterfly spring group 3 reaches the maximum extrusion deformation. The pressure sensor 42 can not only detect the compressive pressure of the butterfly spring group 3, but also know the longitudinal vibration stress during earthquake through the pressure sensors 42 at various angles.

[0053] By providing an anti-displacement mechanism, the butterfly spring group 3 can be prevented from radially shifting during compression, especially when the vibration direction is uncertain during an earthquake, the butterfly spring group 3 can be prevented from shifting.

[0054] The pressure sensor 42 senses the force of the butterfly spring group 3, which is specifically achieved as follows: Figure 3-Figure 4 As shown, when the pressure sensor 42 is subjected to the pressure of the butterfly in the butterfly spring group 3, the pressure sensor 42 can detect the pressure of the butterfly and the time data of the pressure. , label each pressure sensor 42 from A to M, where A and M are any natural numbers, and M is greater than A. Then, the data sensed by each pressure sensor 42 at each moment is Connect the lines, and finally observe the force diagrams of each pressure sensor 42 at each moment and compare them with each other:

[0055] 1) By comparing the force magnitudes at certain moments 1-n on the same butterfly, it is possible to know whether the butterfly spring group 3 has an uneven force problem at this vibration moment, and the vibration frequency in the vertical direction can also be calculated through the 1-t moment;

[0056] 2) By comparing the pressure of the pressure sensor 42 on the same vertical line, it is possible to know whether the butterfly spring group 3 has horizontal displacement and the direction of displacement. Once horizontal displacement occurs, the butterfly will inevitably squeeze the position of the pressure sensor 42 at a different position, and the detected pressure value will be different.

[0057] Example 2: Reference Figure 2 as well as Figure 5-Figure 9 , a disc spring anti-separation isolation support, such as Figure 2 As shown, it includes a connecting plate 1 located on the upper surface of the seismic isolation support, and the diameter of the connecting plate 1 is larger than the diameter of the rubber shock-absorbing body in the seismic isolation support.

[0058] like Figure 2As shown, in order to prevent the separation of the seismic isolation bearing and the upper pier 2 during vibration, a butterfly spring group 3 is provided at the lower surface of the connecting plate 1 and the upper pier 2. The butterfly spring group 3 not only has a strong compressive resistance, but also has a large elastic contact surface, which is suitable for large-volume and high-weight buildings; during vibration, it also has the advantage of large resilience, and can be well elastically connected with the upper pier 2 and the rubber seismic isolation bearing, so that the upper pier 2 and the rubber seismic isolation bearing will not separate during vibration.

[0059] like Figure 2 as well as Figure 5-Figure 6 As shown, in order to make the preload force applied at each position of the butterfly spring 3 the same, a synchronization mechanism is provided at the outer edge of the connecting plate 1 , and the synchronization mechanism includes a gear ring 11 and a transmission gear 12 meshing with the gear ring 11 .

[0060] Specifically, the synchronization mechanism further includes a mounting assembly, a ratchet assembly, and a mounting groove 13 provided on the outer surface of the connecting plate 1. The gear ring 11 is mounted on the inner wall of the mounting groove 13 through the ball bearing 14 to realize the rotation in the circumferential direction. The ratchet assembly is engaged with the tooth groove of the gear ring 11 to realize the positioning action after the gear ring 11 rotates in one direction. The ratchet assembly clamps the gear ring 11 after the gear ring 11 rotates in one direction and prevents it from rotating in the opposite direction, which can prevent the problem of rebound caused by excessive pressure on the butterfly spring group 3.

[0061] In order to prevent the problem of deformation of the seismic isolation bearing due to excessive preload, the installation assembly includes a support plate 15 installed on the outer surface of the connecting plate 1, and the upper and lower surfaces of the support plate 15 are fixedly mounted with reinforcing ribs 16 fixedly connected to the connecting plate 1.

[0062] In order to prevent the gear ring 11 from rotating, the pawl assembly includes a pawl 17 and a pin 18 rotatably connected to the pawl 17 through a bearing and fixed to the upper surface of the support plate 15, and a torsion spring 19 is sleeved on the surface of the pin 18 and fixed to the pawl 17 and the pin 18. The reinforcing rib 16 can firmly fix the components.

[0063] In order to ensure that the sleeve 32 can rotate smoothly, the surface of the sleeve 32 is mounted on the surface of the support plate 15 through a ball bearing 110, and an end bearing 111 is also mounted on the lower surface of the support plate 15 and the outer surface of the sleeve 32. The ball bearing 110 can ensure the axial rotation of the sleeve 32, and the end bearing 111 can prevent the problem of the sleeve 32 being pulled up when the butterfly spring group 3 is compressed and generates a huge elastic force.

[0064] By providing a synchronization mechanism, the force in the extrusion butterfly spring group 3 can be uniform, thereby preventing the problem of unequal deformation height caused by uneven force during the extrusion process.

[0065] like Figure 2 , Figure 5 as well as Figure 7-Figure 9 As shown, in order to facilitate the application of preload force to the butterfly spring group 3, a preload hole 31 is opened on the surface of the butterfly spring group 3, and the inner wall of the preload hole 31 is provided with a control mechanism for applying preload force to the butterfly spring group 3, and the control mechanism includes a sleeve 32 fixedly sleeved on the axis of the transmission gear 12.

[0066] Specifically, the control mechanism includes a threaded sleeve 33 threadedly inserted into the inner wall of the sleeve 32. The inner bottom wall of the sleeve 32 is shaped to match the hexagonal wrench, and the hexagonal wrench can be inserted from the C direction to achieve the turning action.

[0067] The inner top wall of the threaded sleeve 33 is provided with a directional slot 34, the inner wall of the directional slot 34 is slidably plugged with a directional slider 35, and the top inner wall of the threaded sleeve 33 is slidably plugged with a polygonal male plug 36 that is always elastically upward, and the outer surface shape of the polygonal male plug 36 includes but is not limited to any one of a regular quadrilateral, a regular pentagon and a regular hexagon. The principle of the air pump pipe connector is adopted to achieve the effect of quick connection and release.

[0068] Furthermore, a fixing plate 37 adapted thereto is fixedly mounted on the inner wall of the pre-tightening hole 31, a positioning ball 38 is hingedly mounted at the axis of the fixing plate 37 through a rotating shaft, an air pump air pipe connecting female head 39 is fixedly mounted on the bottom surface of the positioning ball 38, a slot 310 adapted to the surface of the polygonal male plug 36 is provided on the inner wall of the air pump air pipe connecting female head 39, and a push rod 311 for lifting the sliding sleeve in the air pump air pipe connecting female head 39 is also fixedly mounted on the upper surface of the sleeve 32. The slot 310 can prevent the threaded sleeve 33 from rotating circumferentially with the sleeve 32 after connection.

[0069] The sleeve 32 is driven to drive the transmission gear 12 to mesh with the gear ring 11 , thereby driving the control mechanism distributed in the annular array to synchronously apply a downward preload force to the butterfly spring group 3 .

[0070] By setting up a control mechanism, a strong preload can be applied to the butterfly spring group 3, and it can also be automatically loosened after the preload is applied, which is convenient for disassembly and removal, and can also avoid the problem that the mechanism applying the preload is hindered when the butterfly spring group 3 is deformed up and down.

[0071] Example 3: Figure 1-Figure 9As shown, a method for preventing separation of a disc spring anti-separation seismic isolation bearing includes step one, passing the polygonal male plug 36 at the top of the threaded sleeve 33 through the pre-tightening hole 31 and connecting it to the air pump air pipe connecting female head 39 at the top of the butterfly spring group 3, so that the directional slider 35 is located in the middle or bottom position of the directional slide groove 34, and finally the bottom of the threaded sleeve 33 is threadedly connected to the sleeve 32 until the directional slider 35 is located at the top position of the directional slide groove 34.

[0072] Step 2: insert the hexagonal wrench into the bottom of the sleeve 32, and drive the hexagonal wrench to rotate manually or electrically, thereby driving the sleeve 32 and the threaded sleeve 33 to be screwed in, and gradually pull the butterfly spring group 3 downward to achieve pre-tightening.

[0073] While driving the hexagonal wrench to rotate in step 2, the transmission gear 12 is driven to engage with the gear ring 11, thereby driving all the sleeves 32 to rotate synchronously, and the ratchet 17 is engaged with the tooth groove of the gear ring 11 to position the gear ring 11 after unidirectional rotation; and when the butterfly spring group 3 is gradually pulled downward, the positioning ball 38 is deflected downward along the rotating shaft.

[0074] Step 3: When the lower surface of the air pump air pipe connecting female head 39 just contacts the push rod 311, stop twisting the sleeve 32, and complete the pouring and solidification of the upper pier 2 and the concrete on the upper pier 2.

[0075] Step 4, continue to turn the hexagonal wrench until the push rod 311 pushes the sliding sleeve in the air pump air pipe connecting female head 39 to the highest point. At this time, the ball in the air pump air pipe connecting female head 39 slides outward, and the butterfly spring group 3 begins to bounce upward, driving the air pump air pipe connecting female head 39 to instantly detach from the polygonal male plug 36, and continue to rotate the sleeve 32 to unscrew the threaded sleeve 33 from the bottom of the sleeve 32.

[0076] When the air pump air pipe connecting female connector 39 is instantly separated from the polygonal male connector 36 in step 4, the butterfly spring assembly 3 presses the pressure sensor 42 .

[0077] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A disc spring anti-separation seismic isolation support, comprising a connecting plate (1) located on the upper surface of the seismic isolation support, wherein the diameter of the connecting plate (1) is greater than the diameter of a rubber shock-absorbing body in the seismic isolation support; Features: A butterfly spring group (3) is provided at the lower surface of the connecting plate (1) and the upper pier (2), and an anti-displacement mechanism is provided at the edge of the disc of the butterfly spring group (3); A synchronizing mechanism is provided at the outer edge of the connecting plate (1), the synchronizing mechanism comprising a gear ring (11) and a transmission gear (12) meshing with the gear ring (11); A pre-tightening hole (31) is provided on the surface of the butterfly spring assembly (3), and a control mechanism for applying a pre-tightening force to the butterfly spring assembly (3) is provided on the inner wall of the pre-tightening hole (31), wherein the control mechanism comprises a sleeve (32) fixedly sleeved on the axis of the transmission gear (12); The sleeve (32) is driven to drive the transmission gear (12) to mesh with the gear ring (11), thereby driving the control mechanism distributed in the annular array to synchronously apply a downward preload force to the butterfly spring group (3); The control mechanism further comprises a threaded sleeve (33) threadably inserted into the inner wall of the sleeve (32); the inner bottom wall of the sleeve (32) is shaped to match a hexagonal wrench; The inner top wall of the threaded sleeve (33) is provided with a directional slide groove (34), the inner wall of the directional slide groove (34) is slidably plugged with a directional slider (35), and the top inner wall of the threaded sleeve (33) is slidably plugged with a polygonal male plug (36) that is always elastically upward, and the outer surface shape of the polygonal male plug (36) includes but is not limited to any one of a regular quadrilateral, a regular pentagon and a regular hexagon; A fixing plate (37) matching the pre-tightening hole (31) is fixedly mounted on the inner wall of the pre-tightening hole (31), a positioning ball (38) is hingedly connected to the axis of the fixing plate (37) via a rotating shaft, an air pump air pipe connecting female head (39) is fixedly mounted on the bottom surface of the positioning ball (38), a slot (310) matching the surface of the polygonal male plug (36) is provided on the inner wall of the air pump air pipe connecting female head (39), and a push rod (311) for lifting the sliding sleeve in the air pump air pipe connecting female head (39) upwards is also fixedly mounted on the upper surface of the sleeve (32).

2. A disc spring anti-separation isolation support according to claim 1, Features: The anti-displacement mechanism comprises a limit slot (4) formed on the outer edge surface of each group of top disc springs in the disc spring group (3), and a limit column (41) having a diameter equal to the width of the limit slot (4) is fixedly mounted on the upper surface of the outer edge of each group of bottom disc springs in the disc spring group (3); A pressure sensor (42) is fixedly mounted on the upper surface of the limiting column (41), and the sensing end of the pressure sensor (42) senses the pressure of the butterfly spring sheet located at the top thereof when the butterfly spring group (3) reaches the maximum extrusion deformation.

3. A disc spring anti-separation isolation support according to claim 2, Features: The synchronization mechanism further comprises a mounting assembly, a ratchet assembly and a mounting groove (13) provided on the outer surface of the connecting plate (1); the gear ring (11) is mounted on the inner wall of the mounting groove (13) via a ball (14) to achieve a rotational movement in a circumferential direction; the ratchet assembly is meshed with the tooth grooves of the gear ring (11) to achieve a positioning movement of the gear ring (11) after unidirectional rotation.

4. The disc spring anti-separation isolation support according to claim 3, Features: The mounting assembly comprises a support plate (15) mounted on the outer surface of the connecting plate (1), and reinforcing ribs (16) fixedly connected to the connecting plate (1) are fixedly mounted on both the upper and lower surfaces of the support plate (15); The pawl assembly comprises a pawl (17) and a pin shaft (18) rotatably connected to the pawl (17) via a bearing and fixed to the upper surface of the support plate (15); a torsion spring (19) is sleeved on the surface of the pin shaft (18) and is respectively fixed to the pawl (17) and the pin shaft (18).

5. The disc spring anti-separation isolation support according to claim 4, Features: The surface of the sleeve (32) is mounted on the surface of the support plate (15) via a ball bearing (110), and end bearings (111) are also mounted on the lower surface of the support plate (15) and the outer surface of the sleeve (32).

6. The anti-separation method of the disc spring anti-separation isolation support according to claim 5, Features: The method comprises the following steps: firstly, passing the polygonal male plug (36) at the top of the threaded sleeve (33) through the pre-tightening hole (31) and connecting it to the air pump air pipe connecting female plug (39) at the top of the butterfly spring assembly (3), so that the directional slide block (35) is located at the middle or bottom position of the directional slide groove (34); and finally, threading the bottom of the threaded sleeve (33) to the sleeve (32) until the directional slide block (35) is located at the top position of the directional slide groove (34); Step 2: insert the hexagonal wrench into the bottom of the sleeve (32), and drive the hexagonal wrench to rotate manually or electrically, thereby driving the sleeve (32) and the threaded sleeve (33) to screw in, and gradually pull the butterfly spring assembly (3) downward to achieve pre-tightening; Step 3: When the lower surface of the air pump air pipe connecting female head (39) just contacts the push rod (311), stop twisting the sleeve (32), and complete the pouring of the upper buttress (2) and the concrete on the upper buttress (2) and solidify; Step 4: Continue to turn the hexagonal wrench until the push rod (311) pushes the sliding sleeve in the air pump air pipe connecting female head (39) upward to the highest point. At this time, the ball in the air pump air pipe connecting female head (39) slides outward, and the butterfly spring assembly (3) starts to bounce upward, driving the air pump air pipe connecting female head (39) to instantly detach from the polygonal male plug (36). Continue to rotate the sleeve (32) to screw the threaded sleeve (33) out from the bottom of the sleeve (32).

7. The anti-separation method of the disc spring anti-separation isolation support according to claim 6, Features: In the second step, while driving the hexagonal wrench to rotate, the transmission gear (12) is driven to mesh with the gear ring (11), thereby driving all the sleeves (32) to rotate synchronously, and the ratchet (17) is meshed with the tooth grooves of the gear ring (11) to position the gear ring (11) after unidirectional rotation; and when the butterfly spring assembly (3) is gradually pulled downward, the positioning ball (38) deflects downward along the rotating shaft; When the air pump air pipe connecting female connector (39) is instantly separated from the polygonal male connector (36) in step 4, the butterfly spring assembly (3) squeezes the pressure sensor (42).

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