A composite laminated spring vibration isolation device

Abstract

The present invention belongs to the field of vibration control technology, and specifically relates to a composite laminated spring vibration isolation device; the device comprises an upper spring mechanism, an intermediate mechanism and a lower spring mechanism, wherein the upper spring mechanism is connected to the intermediate mechanism, and the upper spring mechanism and the intermediate mechanism are arranged between a middle composite plate and an upper composite plate, and the lower spring mechanism is arranged between the lower composite plate and the intermediate structure; while achieving vibration isolation, the device can also control the swing angle response of the upper structure to ensure the safety of the upper structure.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration control, and in particular relates to a composite laminated spring vibration isolation device. Background Art

[0002] To alleviate traffic congestion, the subway system is undoubtedly the best option. Land resources along subway lines offer significant development potential, and the commercial value of the buildings above them is enormous. However, this also presents another challenge: the buildings above subway lines are subject to environmental vibrations caused by the subway's operation, which is unbearable for commercially valuable buildings along subway lines.

[0003] Installing vibration isolators under buildings can effectively isolate the environmental vibrations caused by subway systems. However, while effective, the vibration isolators currently used in actual projects are relatively large or tall due to their inherent performance limitations. Building columns must be adjusted to accommodate the isolators' size, and they also pose stability risks. This increases costs and construction difficulty, significantly reducing building functionality and posing safety risks to the superstructure. Developing a vibration isolator that not only effectively isolates environmental vibrations but also ensures the proper function of the building and the safety of the superstructure remains a challenge in the field of structural vibration control. Summary of the Invention

[0004] The purpose of the present invention is to provide a composite laminated spring vibration isolation device, which can not only isolate vibration but also control the swing angle response of the superstructure to ensure the safety of the superstructure.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A composite laminated spring vibration isolation device comprises an upper spring mechanism, an intermediate mechanism and a lower spring mechanism. The upper spring mechanism is connected to the intermediate mechanism, and the upper spring mechanism and the intermediate mechanism are arranged between a middle combined plate and an upper combined plate, and the lower spring mechanism is arranged between the lower combined plate and the intermediate structure.

[0007] Furthermore, the upper spring mechanism includes an upper combined plate, an upper outer spring, an upper inner spring and a middle combined plate. The upper plane of the upper combined plate is connected to the protected structure. The upper inner springs are arranged in an array between the middle combined plate and the upper combined plate. The upper outer springs are sleeved in parallel outside the upper inner springs. The upper outer springs are arranged between the middle combined plate and the upper combined plate. The upper combined plate is placed on the upper inner springs and the upper outer springs. After the upper spring mechanism is assembled, the upper spring mechanism is arranged on the intermediate structure from top to bottom and fixedly connected to the intermediate mechanism.

[0008] Furthermore, the upper spring mechanism includes an upper combined plate, an upper outer spring and a middle combined plate, the upper plane of the upper combined plate is connected to the protected structure, the upper outer spring is arranged between the middle combined plate and the upper combined plate, and the upper combined plate is placed on the upper outer spring.

[0009] Furthermore, the lower spring mechanism includes a lower combined plate, a lower outer spring and a lower inner spring; the lower inner springs are arranged in an array between the lower combined plate and the intermediate structure, the lower outer springs are arranged in parallel outside the lower inner springs, the lower outer springs are arranged between the lower combined plate and the intermediate structure, and the intermediate mechanism together with the upper spring mechanism are placed on the lower inner spring and the lower outer spring.

[0010] Furthermore, the lower spring mechanism is composed of a lower combination plate and a lower outer spring;

[0011] The lower outer spring is arranged between the lower combined plate and the intermediate structure, and the intermediate mechanism together with the upper spring mechanism is placed on the lower outer spring.

[0012] Furthermore, the upper combined plate includes an upper panel, a first positioning member and a second positioning member, and the first positioning member and the second positioning member are combined into a square array and arranged on the lower plane of the upper panel.

[0013] Furthermore, the middle composite panel includes an upper base plate, a third positioning member, a fourth positioning member and a lower support rod. The third positioning member and the fourth positioning member are combined into a square array and arranged on the upper plane of the upper base plate. The lower support rods are combined into a square array and arranged on the lower plane of the upper base plate and are fixedly connected to the upper base plate.

[0014] Furthermore, the intermediate mechanism includes an intermediate plate, a first reinforcing column, side ribs, a surrounding plate, a first sleeve, a second sleeve, a fifth positioning member and a first limiting ring. The surrounding plate is arranged on the upper plane of the intermediate plate to form a square frame. The first reinforcing column array is arranged on the intermediate plate and is fixedly connected to the intermediate plate. The second sleeve, the fifth positioning member and the first limiting ring are arranged in a square array on the lower plane of the intermediate plate. The side ribs are arranged circumferentially on the outer wall of the surrounding plate, and the first sleeve is arranged on the intermediate plate around the surrounding plate.

[0015] Furthermore, the lower combined plate is composed of a lower base plate, a sixth positioning member, a seventh positioning member and a second limiting ring. The lower plane of the lower base plate is connected to the ground or a non-protective structure, and the seventh positioning member, the sixth positioning member and the second limiting ring are arranged in a square array on the upper plane of the lower base plate.

[0016] Furthermore, the bottom end of the upper inner spring is correspondingly sleeved on the third positioning member or the fourth positioning member, the third positioning member and the fourth positioning member are fixedly connected to the upper base plate, and the top end of the upper inner spring is correspondingly sleeved on the first positioning member or the second positioning member, and the first positioning member and the second positioning member are fixedly connected to the upper panel.

[0017] Furthermore, the lower inner spring is arranged between the lower base plate and the middle plate, and is correspondingly sleeved on the lower support rod and the sixth positioning member.

[0018] Furthermore, the device is also equipped with a plug-in plate damper, which is arranged between the middle plate and the lower base plate. The plug-in plate of the plug-in plate damper is fixedly connected to the lower plane of the middle plate, and the cavity of the plug-in plate damper is fixedly connected to the upper plane of the lower base plate. The horizontal movement deformation and swing movement of the upper structure are protected by the horizontal movement restriction and vertical movement restriction of the plug-in plate damper. The interior of the cavity is filled with viscous damping fluid, and the plug-in plate is arranged inside the cavity and immersed in the viscous damping fluid. Under normal operation, the vibration isolation device proposed in this patent absorbs the kinetic energy of the relative movement between the intermediate mechanism and the lower base plate and converts it into heat energy, thereby providing effective damping and limiting functions to prevent the upper protected structure from exceeding the limit displacement.

[0019] Furthermore, the vibration isolation device proposed in this patent needs to be pre-stressed before normal use, and the pre-stressing treatment can be performed according to the pre-stressing scheme A. The pre-stressing deformation of the pre-stressing scheme A is determined by the design. The pre-stressing process A is divided into the initial pre-stressing process A and the post-pre-stressing process A. The first pre-tightening bolt and the second pre-tightening bolt are used for pre-stressing and tightening.

[0020] Initial pre-stressing process A: After the upper spring mechanism is pressed to the pre-stressing value using a dedicated pressure device, the upper inner spring and the upper outer spring are in a compressed state, and the upper panel and the upper base are fastened using the first pre-tightening bolts.

[0021] The pre-stressed upper spring mechanism is installed on the intermediate mechanism. The lower support rod in the upper spring mechanism passes through the intermediate mechanism and extends into the lower spring mechanism; at the same time, the first reinforcement column of the intermediate mechanism passes through the upper base plate and is fixedly connected to the upper panel by bolts.

[0022] The upper panel of the upper spring mechanism is fixedly connected to the square frame of the intermediate mechanism by welding or other methods. After the fixed connection, the first pre-tightening bolt can be removed. At this point, the preliminary pre-stressing A process is completed.

[0023] Post-preload A: Dedicated pressure equipment applies downward pressure to the upper panel of the upper spring mechanism. The upper spring mechanism compresses the lower outer and inner springs of the lower spring mechanism through the intermediate mechanism. During this compression process, the lower support rod is free, and its lower end gradually penetrates the inner circle of the second retaining ring. Finally, bolts secure the lower support rod to the lower base plate. At this point, the compression of the lower outer and inner springs has not reached the preload specification, and the intermediate mechanism continues to move downward, gradually forming a gap between the upper plane of the intermediate plate and the lower plane of the upper base plate.

[0024] When the compression amount reaches the pre-compression specified value, the second pre-tightening bolt is used to tighten the intermediate mechanism and the lower base plate. The tightening action of the second pre-tightening bolt enables the lower spring mechanism to maintain the pre-compression specified value. At this point, the post-pre-compression A process is completed.

[0025] In addition, preloading treatment can be carried out according to preloading scheme B. The preloading deformation of preloading scheme B is determined by the design. Preloading process B is divided into preliminary preloading process B and post-preloading process B. The first preloading bolt and the second preloading bolt are used for preloading and tightening.

[0026] Initial pre-compression B process: After the upper spring mechanism is pressed to the pre-compression value using a special pressure device, this pre-compression value is small. At this time, the upper inner spring and the upper outer spring are in a slightly compressed state, and the first pre-tightening bolts are used to tighten the upper panel and the upper base.

[0027] The pre-stressed upper spring mechanism is installed on the intermediate mechanism. The lower support rod in the upper spring mechanism passes through the intermediate mechanism and extends into the lower spring mechanism. At the same time, the first reinforcement column of the intermediate mechanism passes through the upper base plate, but there is still a certain distance from the upper panel.

[0028] The upper panel of the upper spring mechanism is fixedly connected to the square frame of the intermediate mechanism by welding or other methods. After the fixed connection, the first pre-tightening bolt can be removed. At this point, the preliminary pre-compression B process is completed.

[0029] Post-preloading B process: A dedicated pressure device is used to apply downward pressure to the upper panel of the upper spring mechanism. This preloading process is an overall preloading process, in which both the upper spring mechanism and the lower spring mechanism are in a synchronous preloading process.

[0030] The upper spring mechanism moves downward together with the intermediate mechanism. The lower outer spring and the lower inner spring of the lower spring mechanism are compressed first. At this time, the lower support rod is in a free state. The lower end face of the lower support rod is gradually inserted into the inner circle of the second limiting ring, and finally the lower support rod is fixed to the lower base plate with bolts.

[0031] Then, the upper spring mechanism continues to move downward together with the intermediate mechanism, and the upper inner spring and upper outer spring of the upper spring mechanism and the lower outer spring and lower inner spring of the lower spring mechanism are compressed together. After the first reinforcing column contacts the upper panel, the first reinforcing column is fixedly connected to the upper panel with bolts.

[0032] At this time, the upper spring mechanism continues to move downward together with the intermediate mechanism, and a gap gradually forms between the upper plane of the intermediate plate and the lower plane of the upper base plate. When the compression amount reaches the preload specified value, the second preload bolt is used to tighten the intermediate mechanism and the lower base plate. The tightening action of the second preload bolt enables the lower spring mechanism to maintain this preload specified value. At this point, the post-preload B process is completed.

[0033] Furthermore, the load transfer relationship between the upper spring mechanism and the lower spring mechanism is a parallel relationship;

[0034] After the construction and manufacturing of the upper protected structure is completed and the deadweight load is stable, the upper panel divides the load of the protected structure into load A and load B. The upper panel directly transfers the load A to the upper inner spring and the upper outer spring. The upper inner spring and the upper outer spring transfer the load A to the lower base plate through the upper base plate and the lower support rod. The lower base plate transfers the load A to the ground or non-protected structure.

[0035] In addition, the upper panel transfers the load B to the lower inner spring and the lower outer spring through the intermediate mechanism 3, the lower inner spring and the lower outer spring transfer the load B to the lower bottom plate, and the lower bottom plate transfers the load B to the ground or non-protective structure;

[0036] After the construction and manufacturing of the upper protected structure is completed and the static weight load is stable, the second pre-tightening bolts are loosened, and the loosening distance of the second pre-tightening bolts is determined according to the design.

[0037] Furthermore, all perforated components, including the lower support rod, the second pre-tightening bolt, etc., can be optionally equipped with rubber sleeves at the perforated positions for protection to avoid direct connection of steel parts.

[0038] Furthermore, the composite laminated spring vibration isolation device proposed in this patent can be used in combination, and the number of models and arrangements can be flexibly selected according to the load distribution of the building structure.

[0039] The upper spring mechanism can have smaller dimensions than the lower spring mechanism. This better aligns with the dimensions of the structural frame columns, shear walls, or buttresses, eliminating the need to enlarge the column base and impacting building functionality. Furthermore, the lower spring mechanism's larger dimensions enhance the structural load-bearing capacity and stability of the device.

[0040] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0041] 1. Supporting function: The upper spring mechanism and the lower spring mechanism of the vibration isolation device form a parallel relationship through load transmission of the intermediate mechanism, and jointly provide sufficient rigidity to support the upper protected structure.

[0042] 2. Vibration Isolation: The upper and lower spring mechanisms of the vibration isolation device are connected in parallel through the conversion of the intermediate mechanism. The upper and lower spring mechanisms work together to achieve vertical and horizontal flexible isolation between the protected structure and the ground or unprotected structure. The vibration isolation device isolates the effects of environmental vibration or the vibration of the upper structure through its own slight reciprocating deformation.

[0043] 3. Earthquake protection: The upper spring mechanism and the lower spring mechanism of the vibration isolation device provide sufficient lateral stiffness to the upper protected structure, so that the vibration isolation device has sufficient stiffness in the horizontal direction to resist the earthquake. At the same time, when the horizontal displacement exceeds a certain value, the limiter, limit ring, damper and pre-tightening bolts will restrict each other to protect the safety of the upper structure during earthquakes.

[0044] 4. Damping effect: The damper of the vibration isolation device is a plug-in damper, which absorbs the kinetic energy of the reciprocating motion of the intermediate mechanism and the lower base plate and converts it into heat energy, providing effective damping function to prevent the upper structure from exceeding the displacement limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a structural diagram of Example 1 of the present invention;

[0046] Figure 2 This is a cross-sectional view of Example 1;

[0047] Figure 3 This is a side view of Example 1.

[0048] Figure 4 Schematic diagram of the upper surface structure of the upper composite panel.

[0049] Figure 5 Schematic diagram of the lower surface structure of the upper composite plate.

[0050] Figure 6 This is a cross-sectional view of the upper composite plate.

[0051] Figure 7 Schematic diagram of the middle composite panel structure Figure 1 .

[0052] Figure 8 Schematic diagram of the middle composite panel structure Figure 2 .

[0053] Figure 9 This is a top view of the middle composite panel.

[0054] Figure 10 This is a cross-sectional view of the middle composite panel.

[0055] Figure 11 Schematic diagram of the intermediate organization structure Figure 1 .

[0056] Figure 12 Schematic diagram of the intermediate organization structure Figure 2 .

[0057] Figure 13 It is a side view of the intermediate mechanism.

[0058] Figure 14 This is a schematic diagram of the bottom of the intermediate mechanism.

[0059] Figure 15 Schematic diagram of the lower combined plate structure Figure 1 .

[0060] Figure 16 Schematic diagram of the lower combined plate structure Figure 2 .

[0061] Figure 17 This is the top view of the lower composite plate.

[0062] Figure 18 Schematic diagram of preloading structure.

[0063] Figure 19 This is a cross-sectional view of the preload structure.

[0064] Figure 20 This is a structural diagram of Example 3.

[0065] Figure 21 Schematic diagram of the plug-in damper structure Figure 1 .

[0066] Figure 22 Schematic diagram of the plug-in damper structure Figure 2 .

[0067] Figure 23 This is a cross-sectional view of Example 3.

[0068] Description of the drawings: 1-upper assembly plate, 2-middle assembly plate, 3-intermediate mechanism, 4-lower assembly plate, 5-upper outer spring, 6-upper inner spring, 7-lower outer spring, 8-lower inner spring, 9-first pre-tightening bolt, 10-second pre-tightening bolt, 11-insert plate damper;

[0069] 101-upper panel, 102-first positioning member, 103-second positioning member;

[0070] 201 - upper base plate, 202 - third positioning member, 203 - fourth positioning member, 204 - seventh positioning member; 301 - middle plate, 302 - first reinforcement column, 303 - side rib, 304 - first enclosure plate, 305 - second enclosure plate, 306 - first sleeve, 307 - second sleeve, 308 - fifth positioning member, 309 - first limiting ring;

[0071] 401 - lower base plate, 402 - sixth positioning member, 403 - third sleeve, 404 - second limiting ring. DETAILED DESCRIPTION

[0072] like Figure 1-23 In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0073] Example 1

[0074] like Figures 1 to 3 As shown, a composite laminated spring vibration isolation device comprises an upper spring mechanism, an intermediate mechanism 3 and a lower spring mechanism;

[0075] The upper spring mechanism is composed of an upper combined plate 1, an upper outer spring 5, an upper inner spring 6 and a middle combined plate 2;

[0076] The upper plane of the upper composite panel 1 is connected to the protected structure;

[0077] The upper inner springs 6 are arranged in a square array between the middle combination plate 2 and the upper combination plate 1, and the upper outer springs 5 ​​are sleeved outside the upper inner springs 6 in parallel and are also arranged between the middle combination plate 2 and the upper combination plate 1. The upper combination plate 1 is placed on the upper inner springs 6 and the upper outer springs 5;

[0078] After the upper spring mechanism is assembled, the upper spring mechanism is arranged on the intermediate structure 3 from top to bottom and fixedly connected to the intermediate structure 3;

[0079] The lower spring mechanism is composed of a lower combination plate 4, a lower outer spring 7 and a lower inner spring 8;

[0080] The lower inner springs 8 are placed in a square array between the lower combination plate 4 and the intermediate structure 3. The lower outer springs 7 are placed in parallel outside the lower inner springs 8 and are also arranged between the lower combination plate 4 and the intermediate structure 3. The intermediate mechanism 3 together with the upper spring mechanism is placed on the lower inner springs 8 and the lower outer springs 7.

[0081] like Figures 4 to 6 As shown, the upper combined panel 1 is composed of an upper panel 101, a first positioning member 102 and a second positioning member 103;

[0082] The first positioning member 102 and the second positioning member 103 are cylinders with two diameters; five first positioning members 102 and four second positioning members 103 are arranged in a square array on the lower plane of the upper panel 101, and the four second positioning members 103 are arranged at the four corners of the square array;

[0083] A through hole A is formed in the middle of the second positioning member 103. Similarly, a through hole B is formed in the upper panel 101 at a position corresponding to the through hole A.

[0084] The end surfaces with larger diameters of the first positioning member 102 and the second positioning member 103 are fixedly connected to the lower plane of the upper panel 101;

[0085] The upper panel 101 is further provided with four sink holes A.

[0086] like Figures 7 to 10As shown, the middle combination plate 2 is composed of an upper base plate 201, a third positioning member 202, a fourth positioning member 203 and a lower support rod 204;

[0087] The third positioning member 202 and the fourth positioning member 203 are cylinders with two diameters; five third positioning members 202 and four fourth positioning members 203 are arranged in a square array on the upper plane of the upper base plate 201, and the four fourth positioning members 203 are arranged at the four corners of the square array;

[0088] A threaded hole A is formed in the middle of the fourth positioning member 203;

[0089] The end surfaces of the third positioning member 202 and the fourth positioning member 203 with larger diameters are fixedly connected to the upper plane of the upper base plate 201 .

[0090] The lower support rods 204 are cylindrical and are arranged in a square array on the lower plane of the upper base plate 201 and are fixedly connected to the upper base plate 201. The lower support rods 204 are arranged in the same manner as the third positioning members 202 and the fourth positioning members 203 on the upper plane of the upper base plate 201.

[0091] One end surface of the lower support rod 204 is fixedly connected to the lower plane of the upper base plate 201, and a threaded hole C is processed at the other end.

[0092] like Figures 11 to 14 As shown, the intermediate mechanism 3 is composed of an intermediate plate 301, a first reinforcing column 302, side ribs 303, a first enclosure 304, a second enclosure 305, a first sleeve 306, a second sleeve 307, a fifth positioning member 308 and a first limiting ring 309;

[0093] The first and second panels 304, 305 are symmetrically arranged on the upper plane of the middle panel 301. The first and second panels 304, 305 are arranged perpendicular to each other to form a square frame. The middle panel 301 has nine through holes C in a 3x3 square array in the portion enclosed by the square frame.

[0094] The first reinforcement column 302 is a cylinder. Four first reinforcement columns 302 are arranged in a square array in the square frame. One end of the first reinforcement column 302 is fixedly connected to the upper plane of the middle plate 301, and the other end is processed with a threaded hole D.

[0095] The first reinforcing column 302 is staggered with the through hole C;

[0096] The side ribs 303 are arranged at a certain interval around the outer periphery of the square frame, and the side ribs 303 connect the middle plate 301 and the first enclosure plate 304 or the second enclosure plate 305;

[0097] The first sleeve 306 is annular in shape. Four first sleeves 306 are arranged at the four corners of the upper plane of the middle plate 301. The middle plate 301 also has four through holes D with corresponding diameters on the inner circles of the four first sleeves 306.

[0098] The first limiting ring 309 is annular in shape. Nine first limiting rings 309 are arranged on the lower plane of the middle plate 301. The inner circle of the first limiting ring 309 is concentric with the through hole C and has the same diameter.

[0099] The second sleeve 307 is annular, and four second sleeves 307 are arranged at the four corners of the lower plane of the middle plate 301, and the second sleeve 307 is concentric with the through hole D;

[0100] The fifth positioning members 308 are cylindrical with two different diameters. Twelve of the fifth positioning members 308 are arranged on four sides of the lower plane of the middle plate 301, with three fifth positioning members 308 arranged on each side. The end surface of the fifth positioning member 308 with a larger diameter is fixedly connected to the lower plane of the middle plate 301.

[0101] The second sleeve 307, the fifth positioning member 308 and the first limiting ring 309 are arranged in a square array on the lower plane of the middle plate 301;

[0102] like Figures 15 to 17 As shown, the lower assembly plate 4 is composed of a lower base plate 401, a sixth positioning member 402, a seventh positioning member 403 and a second limiting ring 404;

[0103] The lower plane of the lower base plate 401 is connected to the ground or a non-protective structure;

[0104] The second limiting ring 404 is annular in shape, and nine second limiting rings 404 are arranged in a square array on the upper plane of the lower base plate 401 , and the second limiting rings 404 and the first limiting ring 309 are arranged concentrically in the vertical direction.

[0105] Nine countersunk holes B are further formed on the lower plane of the lower base plate 401 , and the countersunk holes B are concentrically arranged corresponding to the second limiting ring 404 .

[0106] The sixth positioning member 402 is a cylinder with two diameters. Twelve sixth positioning members 402 are arranged on the four sides of the upper plane of the lower base plate 401. The end face with the larger diameter of the sixth positioning member 402 is fixedly connected to the upper plane of the lower base plate 401. The arrangement position of the sixth positioning member 402 and the fifth positioning member 308 are correspondingly concentrically arranged in the vertical direction.

[0107] The third sleeve 403 is annular and has a threaded hole B on its inner circle. The third sleeve 403 is arranged at the four corners of the upper plane of the lower base plate 401 and is concentrically arranged with the second sleeve 307 in the vertical direction.

[0108] The third sleeve 403, the sixth positioning member 402 and the second limiting ring 404 are arranged in a square array on the upper plane of the lower base plate 401;

[0109] The bottom ends of the plurality of upper inner springs 6 are correspondingly sleeved on the smaller diameter cylinders of the third positioning members 202 and the fourth positioning members 203 arranged in a square array, and are connected to the corresponding third positioning members 202 or fourth positioning members 203;

[0110] The top ends of the plurality of upper inner springs 6 are correspondingly sleeved on the smaller diameter cylinders of the first positioning members 102 and the second positioning members 103 arranged in a square array, and are connected to the corresponding first positioning members 102 and second positioning members 103;

[0111] The bottom ends of the plurality of upper outer springs 5 ​​are correspondingly sleeved on the larger diameter cylinders of the third positioning member 202 and the fourth positioning member 203 arranged in a square array, and are connected to the upper base plate 201;

[0112] The top ends of the plurality of upper outer springs 5 ​​are correspondingly sleeved on the larger diameter cylinders of the first positioning members 102 and the second positioning members 103 arranged in a square array, and are connected to the upper panel 101;

[0113] The plurality of lower inner springs 8 are respectively and correspondingly sleeved outside the lower support rods 204 arranged in a square array. The lower ends of the lower inner springs 8 at this position are connected to the upper end surface of the second limiting ring 404, and the upper ends are connected to the lower end surface of the first limiting ring 309.

[0114] The bottom ends of the other lower inner springs 8 are correspondingly sleeved on the smaller diameter cylinders forming the sixth positioning member 402 and connected to the sixth positioning member 402, and the top ends of the other lower inner springs 8 are correspondingly sleeved on the smaller diameter cylinders forming the square array of the fifth positioning members 308 and connected to the fifth positioning members 308.

[0115] The bottom ends of the plurality of lower outer springs 7 are correspondingly sleeved on the outer circle of the second limiting rings 404 arranged in a square array and connected to the upper plane of the lower base plate 401. The top ends of the plurality of lower outer springs 7 are correspondingly sleeved on the first limiting rings 309 arranged in a square array and connected to the lower plane of the middle plate 301.

[0116] In addition, the bottom end of the other lower outer spring 7 is correspondingly sleeved on the outer circle of the sixth positioning member 402 and the third sleeve 403, and is connected to the upper plane of the lower base plate 401, and its top end is correspondingly sleeved on the outer circle of the fifth positioning member 308 and the second sleeve 307, and is connected to the lower plane of the middle plate 301.

[0117] like Figure 18-19 As shown, Example 1 also needs to be pre-pressed during the assembly process, and the pre-pressing treatment method can be performed according to pre-pressing scheme A.

[0118] Prestressing scheme A: After the upper spring mechanism is assembled, it needs to be tightened with the first pre-tightening bolt 9; after the upper spring mechanism is pressed to the pre-stressing specified value by a special pressure device, the pre-stressing specified value is determined by the design, and the first pre-tightening bolt 9 passes through the through hole B of the upper panel 101 and the through hole A of the second positioning member 103 from the upper plane of the upper panel 101 downward and is fastened to the fourth positioning member 203. The tightening action of the first pre-tightening bolt 9 enables the upper spring mechanism to maintain this pre-stressing specified value.

[0119] The pre-stressed upper spring mechanism is installed on the intermediate mechanism 3 from top to bottom. The lower support rod 204 of the upper spring mechanism passes through the through hole C of the intermediate mechanism 3 and the inner circle of the first limiting ring 309 and then extends into the lower spring mechanism.

[0120] The threaded hole D of the first reinforcing column 302 of the intermediate mechanism 3 and the countersunk hole A of the upper panel 101 are fixedly connected by bolts;

[0121] The upper panel 101 of the upper spring mechanism is fixedly connected to the upper end surface of the square frame of the intermediate mechanism 3 by welding. After the welding process is completed, the first pre-tightening bolt 9 is removed.

[0122] After the upper spring mechanism, the intermediate mechanism 3 and the lower spring mechanism are assembled, a second pre-stressing is carried out. This pre-stressing is an overall pre-stressing. The upper spring mechanism and the lower spring mechanism are compressed successively during this pre-stressing process and are tightened with the second pre-tightening bolt 10: a special pressure equipment is used to apply downward pressure to the upper panel 101 of the upper spring mechanism, and the upper spring mechanism together with the intermediate mechanism 3 compresses the lower outer spring 7 and the lower inner spring 8 of the lower spring mechanism. During the compression process, the lower end face of the lower support rod 204 is gradually inserted into the inner circle of the second limit ring 404, and finally the lower end face of the lower support rod 204 is connected to the upper plane of the lower base plate 404, and is fixed from bottom to top with bolts passing through the countersunk hole B of the lower base plate 404 and the threaded hole C of the lower support rod 204, that is, the lower base plate 404 is fixedly connected to the lower support rod 204. At this time, the compression amount of the lower outer spring 7 and the lower inner spring 8 has not reached the pre-compression specified value, the intermediate mechanism 3 continues to move downward, and a gap is gradually formed between the upper plane of the intermediate plate 301 and the lower plane of the upper base plate 201.

[0123] When the compression amount reaches the pre-stressing specified value, the second pre-tightening bolt 10 is used to pass through the inner circle of the first sleeve 306, the through hole of the middle plate 301 and the inner circle of the second sleeve 306 from the upper end face of the first sleeve 306 on the upper plane of the middle plate 301 and is fastened to the threaded hole B of the third sleeve 403 of the lower combined plate 4. The tightening action of the second pre-tightening bolt 10 enables the lower spring mechanism to maintain this pre-stressing specified value, and the pre-stressing scheme A is completed.

[0124] The load transfer relationship between the upper spring mechanism and the lower spring mechanism is a parallel relationship;

[0125] After the construction and manufacturing of the upper protected structure is completed and the deadweight load is stabilized, the upper panel 101 divides the deadweight load of the protected structure into load A and load B. The upper panel 101 directly transfers the load A to the upper inner spring 6 and the upper outer spring 5. The upper inner spring 6 and the upper outer spring 5 transfer the load A through the upper base plate 201 and the lower support rod 204 to the lower base plate 401. The lower base plate 401 transfers the load A to the ground or non-protected structure.

[0126] In addition, the upper panel 101 transfers the load B to the lower inner spring 8 and the lower outer spring 7 through the intermediate mechanism 3, the lower inner spring 8 and the lower outer spring 7 transfer the load B to the lower base plate 401, and the lower base plate 401 transfers the load B to the ground or non-protective structure.

[0127] After the construction of the upper protected structure is completed and the load is stable, the second pre-tightening bolt 10 is loosened to the designed position. The loosening distance of the second pre-tightening bolt 10 is determined according to the design.

[0128] Example 2

[0129] like Figures 1 to 3 As shown, a composite laminated spring vibration isolation device comprises an upper spring mechanism, an intermediate mechanism 3 and a lower spring mechanism;

[0130] The upper spring mechanism is composed of an upper combined plate 1, an upper outer spring 5, an upper inner spring 6 and a middle combined plate 2;

[0131] The upper plane of the upper composite panel 1 is connected to the protected structure;

[0132] The upper inner springs 6 are arranged in a square array between the middle combination plate 2 and the upper combination plate 1, and the upper outer springs 5 ​​are sleeved outside the upper inner springs 6 in parallel and are also arranged between the middle combination plate 2 and the upper combination plate 1. The upper combination plate 1 is placed on the upper inner springs 6 and the upper outer springs 5;

[0133] After the upper spring mechanism is assembled, the upper spring mechanism is arranged on the intermediate structure 3 from top to bottom and fixedly connected to the intermediate structure 3;

[0134] The lower spring mechanism is composed of a lower combination plate 4, a lower outer spring 7 and a lower inner spring 8;

[0135] The lower inner springs 8 are placed in a square array between the lower combination plate 4 and the intermediate structure 3. The lower outer springs 7 are placed in parallel outside the lower inner springs 8 and are also arranged between the lower combination plate 4 and the intermediate structure 3. The intermediate mechanism 3 together with the upper spring mechanism is placed on the lower inner springs 8 and the lower outer springs 7.

[0136] like Figures 4 to 6 As shown, the upper combined panel 1 is composed of an upper panel 101, a first positioning member 102 and a second positioning member 103;

[0137] The first positioning member 102 and the second positioning member 103 are cylinders with two diameters; five first positioning members 102 and four second positioning members 103 are arranged in a square array on the lower plane of the upper panel 101, and the four second positioning members 103 are arranged at the four corners of the square array;

[0138] A through hole A is formed in the middle of the second positioning member 103. Similarly, a through hole B is formed in the upper panel 101 at a position corresponding to the through hole A.

[0139] The end surfaces with larger diameters of the first positioning member 102 and the second positioning member 103 are fixedly connected to the lower plane of the upper panel 101;

[0140] The upper panel 101 is further provided with four sink holes A.

[0141] like Figures 7 to 10 As shown, the middle combination plate 2 is composed of an upper base plate 201, a third positioning member 202, a fourth positioning member 203 and a lower support rod 204;

[0142] The third positioning member 202 and the fourth positioning member 203 are cylinders with two diameters; five third positioning members 202 and four fourth positioning members 203 are arranged in a square array on the upper plane of the upper base plate 201, and the four fourth positioning members 203 are arranged at the four corners of the square array;

[0143] A threaded hole A is formed in the middle of the fourth positioning member 203;

[0144] The end surfaces of the third positioning member 202 and the fourth positioning member 203 with larger diameters are fixedly connected to the upper plane of the upper base plate 201 .

[0145] The lower support rods 204 are cylindrical and are arranged in a square array on the lower plane of the upper base plate 201 and are fixedly connected to the upper base plate 201. The lower support rods 204 are arranged in the same manner as the third positioning members 202 and the fourth positioning members 203 on the upper plane of the upper base plate 201.

[0146] One end surface of the lower support rod 204 is fixedly connected to the lower plane of the upper base plate 201, and a threaded hole C is processed at the other end.

[0147] like Figures 11 to 14 As shown, the intermediate mechanism 3 is composed of an intermediate plate 301, a first reinforcing column 302, side ribs 303, a first enclosure 304, a second enclosure 305, a first sleeve 306, a second sleeve 307, a fifth positioning member 308 and a first limiting ring 309;

[0148] The first panels 304 and the second panels 305 are symmetrically arranged in pairs on the upper plane of the middle panel 301. The first panels 304 and the second panels 305 are arranged perpendicular to each other to form a square frame.

[0149] The portion of the middle plate 301 enclosed by the square frame has nine through-holes C formed in a 3x3 square array. The first reinforcing columns 302 are cylindrical, and four of them are arranged in a square array within the square frame. One end of each first reinforcing column 302 is fixedly connected to the upper surface of the middle plate 301, and the other end has a threaded hole D. The first reinforcing columns 302 are staggered from the through-holes C.

[0150] The side ribs 303 are arranged at a certain interval around the outer periphery of the square frame, and the side ribs 303 connect the middle plate 301 and the first enclosure plate 304 or the second enclosure plate 305;

[0151] The first sleeve 306 is annular in shape. Four first sleeves 306 are arranged at the four corners of the upper plane of the middle plate 301. The middle plate 301 also has four through holes D with corresponding diameters on the inner circles of the four first sleeves 306.

[0152] The first limiting ring 309 is annular in shape. Nine first limiting rings 309 are arranged on the lower plane of the middle plate 301. The inner circle of the first limiting ring 309 is concentric with the through hole C and has the same diameter. The second sleeve 307 is annular in shape. Four second sleeves 307 are arranged at the four corners of the lower plane of the middle plate 301. The second sleeves 307 are concentric with the through hole D.

[0153] The fifth positioning members 308 are cylindrical with two different diameters. Twelve of the fifth positioning members 308 are arranged on four sides of the lower plane of the middle plate 301, with three fifth positioning members 308 arranged on each side. The end surface of the fifth positioning member 308 with a larger diameter is fixedly connected to the lower plane of the middle plate 301.

[0154] The second sleeve 307, the fifth positioning member 308 and the first limiting ring 309 are arranged in a square array on the lower plane of the middle plate 301;

[0155] like Figures 15 to 17 As shown, the lower assembly plate 4 is composed of a lower base plate 401, a sixth positioning member 402, a seventh positioning member 403 and a second limiting ring 404; the lower plane of the lower base plate 401 is connected to the ground or a non-protective structure;

[0156] The second limiting ring 404 is annular in shape, and nine second limiting rings 404 are arranged in a square array on the upper plane of the lower base plate 401 , and the second limiting rings 404 and the first limiting ring 309 are arranged concentrically in the vertical direction.

[0157] Nine countersunk holes B are further formed on the lower plane of the lower base plate 401 , and the countersunk holes B are concentrically arranged corresponding to the second limiting ring 404 .

[0158] The sixth positioning member 402 is a cylinder with two diameters. Twelve sixth positioning members 402 are arranged on the four sides of the upper plane of the lower base plate 401. The end face with the larger diameter of the sixth positioning member 402 is fixedly connected to the upper plane of the lower base plate 401. The arrangement position of the sixth positioning member 402 and the fifth positioning member 308 are correspondingly concentrically arranged in the vertical direction.

[0159] The third sleeve 403 is annular and has a threaded hole B on its inner circle. The third sleeve 403 is arranged at the four corners of the upper plane of the lower base plate 401 and is concentrically arranged with the second sleeve 307 in the vertical direction.

[0160] The third sleeve 403, the sixth positioning member 402 and the second limiting ring 404 are arranged in a square array on the upper plane of the lower base plate 401;

[0161] The bottom ends of the plurality of upper inner springs 6 are correspondingly sleeved on the smaller diameter cylinders of the third positioning members 202 and the fourth positioning members 203 arranged in a square array, and are connected to the corresponding third positioning members 202 or fourth positioning members 203;

[0162] The top ends of the plurality of upper inner springs 6 are correspondingly sleeved on the smaller diameter cylinders of the first positioning members 102 and the second positioning members 103 arranged in a square array, and are connected to the corresponding first positioning members 102 and second positioning members 103;

[0163] The bottom ends of the plurality of upper outer springs 5 ​​are correspondingly sleeved on the larger diameter cylinders of the third positioning member 202 and the fourth positioning member 203 arranged in a square array, and are connected to the upper base plate 201;

[0164] The top ends of the plurality of upper outer springs 5 ​​are correspondingly sleeved on the larger diameter cylinders of the first positioning members 102 and the second positioning members 103 arranged in a square array, and are connected to the upper panel 101;

[0165] The plurality of lower inner springs 8 are respectively and correspondingly sleeved outside the lower support rods 204 arranged in a square array. The lower ends of the lower inner springs 8 at this position are connected to the upper end surface of the second limiting ring 404, and the upper ends are connected to the lower end surface of the first limiting ring 309.

[0166] The bottom ends of the other lower inner springs 8 are correspondingly sleeved on the smaller diameter cylinders forming the sixth positioning member 402 and connected to the sixth positioning member 402, and the top ends of the other lower inner springs 8 are correspondingly sleeved on the smaller diameter cylinders forming the square array of the fifth positioning members 308 and connected to the fifth positioning members 308.

[0167] The bottom ends of the plurality of lower outer springs 7 are correspondingly sleeved on the outer circle of the second limiting rings 404 arranged in a square array and connected to the upper plane of the lower base plate 401. The top ends of the plurality of lower outer springs 7 are correspondingly sleeved on the first limiting rings 309 arranged in a square array and connected to the lower plane of the middle plate 301.

[0168] In addition, the bottom end of the other lower outer spring 7 is correspondingly sleeved on the outer circle of the sixth positioning member 402 and the third sleeve 403, and is connected to the upper plane of the lower base plate 401, and its top end is correspondingly sleeved on the outer circle of the fifth positioning member 308 and the second sleeve 307, and is connected to the lower plane of the middle plate 301.

[0169] like Figure 18-19 As shown, embodiment 1 also needs to be pre-pressed during the assembly process, and the pre-pressing treatment method can be performed according to pre-pressing scheme B.

[0170] Pre-stressing solution B: After the upper spring mechanism is assembled, it needs to be tightened with the first pre-tightening bolt 9;

[0171] After the upper spring mechanism is pressed to the pre-compression value by a special pressure device, this pre-compression value is small. At this time, the upper inner spring 6 and the upper outer spring 5 are in a slightly compressed state. The first pre-tightening bolt 9 is used to pass through the through hole B of the upper panel 101 and the through hole A of the second positioning member 103 from the upper plane of the upper panel 101 and is fastened to the fourth positioning member 203. The tightening action of the first pre-tightening bolt 9 enables the upper spring mechanism to maintain this pre-compression value.

[0172] The pre-stressed upper spring mechanism is installed on the intermediate mechanism 3. The lower support rod 204 of the upper spring mechanism passes through the through hole C of the intermediate mechanism 3 and the inner circle of the first limiting ring 309 and then extends into the lower spring mechanism;

[0173] At the same time, the first reinforcing column 302 of the intermediate mechanism 3 passes through the upper base plate 201 , but is still at a certain distance from the upper panel 101 .

[0174] The upper panel 101 of the upper spring mechanism is fixedly connected to the upper end surface of the square frame of the intermediate mechanism 3 by welding. After the welding process is completed, the first pre-tightening bolt 9 is removed.

[0175] A dedicated pressure device is used again to apply downward pressure to the upper panel 101 of the upper spring mechanism. This pre-pressing process is an overall pre-pressing process, including the upper spring mechanism and the lower spring mechanism are both in a synchronous pre-pressing process.

[0176] The upper spring mechanism moves downward together with the intermediate mechanism 3, and the lower outer spring 7 and the lower inner spring 8 of the lower spring mechanism are compressed first. At this time, the lower support rod 204 is in a free state, and the lower end face of the lower support rod 204 is gradually inserted into the inner circle of the second limiting ring 404, and finally the lower support rod 204 is fixedly connected to the lower base plate 404 with bolts.

[0177] Then, the upper spring mechanism continues to move downward together with the intermediate mechanism 3, and the upper inner spring 6 and the upper outer spring 5 of the upper spring mechanism and the lower outer spring 7 and the lower inner spring 8 of the lower spring mechanism are compressed together. After the first reinforcing column 302 contacts the upper panel 101, bolts are used to fix the first reinforcing column 302 to the upper panel 101.

[0178] At this time, the upper spring mechanism continues to move downward together with the intermediate mechanism 3, and a gap is gradually formed between the upper plane of the intermediate plate 301 and the lower plane of the upper base plate 201. When the compression amount reaches the pre-stressing specified value, the second pre-tightening bolt 10 is used to fasten the lower support rod 204 of the intermediate mechanism 3 to the lower base plate 401. The tightening action of the second pre-tightening bolt 10 enables the lower spring mechanism to maintain this pre-stressing specified value. At this point, the pre-stressing scheme B is completed.

[0179] The load transfer relationship between the upper spring mechanism and the lower spring mechanism is a parallel relationship;

[0180] After the construction and manufacturing of the upper protected structure is completed and the deadweight load is stabilized, the upper panel 101 divides the deadweight load of the protected structure into load A and load B. The upper panel 101 directly transfers the load A to the upper inner spring 6 and the upper outer spring 5. The upper inner spring 6 and the upper outer spring 5 transfer the load A through the upper base plate 201 and the lower support rod 204 to the lower base plate 401. The lower base plate 401 transfers the load A to the ground or non-protected structure.

[0181] Furthermore, upper panel 101 transmits load B to lower inner spring 8 and lower outer spring 7 via intermediate mechanism 3. Lower inner spring 8 and lower outer spring 7 then transmit load B to lower base plate 401, which then transmits load B to the ground or unprotected structure. After construction of the upper protected structure is complete and the load stabilizes, second pre-tightening bolt 10 is loosened to the designed position. The loosening distance of second pre-tightening bolt 10 is determined according to the design.

[0182] Example 3

[0183] like Figure 20-23 As shown, the difference between this embodiment and embodiment 1 is that this embodiment is further equipped with a plug-in plate damper 11 , which is composed of a plug-in plate 1101 and a cavity 1102 .

[0184] The plug-in plate damper is arranged between the middle plate 301 and the lower base plate 401, the plug-in plate 1101 is fixedly connected to the lower plane of the middle plate 301, and the cavity 1102 is fixedly connected to the upper plane of the lower base plate 401; the cavity 1102 is fixedly connected to the upper plane of the lower base plate 401; and the horizontal movement deformation and swaying movement of the upper structure are protected by the horizontal movement restriction and vertical movement restriction of the plug-in plate damper.

[0185] Cavity 1102 is filled with a viscous damping fluid, and insert plate 1101 is disposed within the cavity and immersed in the viscous damping fluid. During normal operation, the vibration isolation device absorbs the kinetic energy of the relative motion between intermediate mechanism 3 and lower base plate 401 and converts it into heat energy, providing effective damping to prevent excessive displacement of the upper protected structure.

[0186] Example 4

[0187] like Figures 1 to 3 As shown, a composite laminated spring vibration isolation device comprises an upper spring mechanism, an intermediate mechanism 3 and a lower spring mechanism;

[0188] The upper spring mechanism is composed of an upper combined plate 1, an upper outer spring 5 and a middle combined plate 2; the upper plane of the upper combined plate 1 is connected to the protected structure;

[0189] The upper outer spring 5 is arranged between the middle combination plate 2 and the upper combination plate 1, and the upper combination plate 1 is placed on the upper outer spring 5;

[0190] After the upper spring mechanism is assembled, the upper spring mechanism is arranged on the intermediate structure 3 from top to bottom and fixedly connected to the intermediate structure 3; the lower spring mechanism is composed of a lower combination plate 4 and a lower outer spring 7;

[0191] The lower outer spring 7 is arranged between the lower combined plate 4 and the intermediate structure 3 , and the intermediate mechanism 3 together with the upper spring mechanism is placed on the lower outer spring 7 .

[0192] like Figures 4 to 6 As shown, the upper combined plate 1 is composed of an upper panel 101, a first positioning member 102 and a second positioning member 103; the first positioning member 102 and the second positioning member 103 are cylinders with two diameters; five first positioning members 102 and four second positioning members 103 are arranged in a square array on the lower plane of the upper panel 101, and the four second positioning members 103 are arranged at the four corners of the square array;

[0193] A through hole A is provided in the middle of the second positioning member 103. Similarly, a through hole B is provided at a position corresponding to the through hole A on the upper panel 101. The larger diameter end faces of the first positioning member 102 and the second positioning member 103 are fixedly connected to the lower plane of the upper panel 101. The upper panel 101 also has four sinking holes A.

[0194] like Figures 7 to 10 As shown, the middle combination plate 2 is composed of an upper base plate 201, a third positioning member 202, a fourth positioning member 203 and a lower support rod 204;

[0195] The third positioning member 202 and the fourth positioning member 203 are cylindrical bodies with two diameters. Five third positioning members 202 and four fourth positioning members 203 are arranged in a square array on the upper plane of the upper base plate 201, and the four fourth positioning members 203 are arranged at the four corners of the square array. A threaded hole A is formed in the middle of each fourth positioning member 203.

[0196] The third and fourth positioning members 202 and 203 have their larger end faces fixedly connected to the upper plane of the upper base plate 201. The lower support rods 204 are cylindrical and arranged in a square array on the lower plane of the upper base plate 201. The lower support rods 204 are fixedly connected to the upper base plate 201, and are arranged in a consistent manner with the third and fourth positioning members 202 and 203 on the upper plane of the upper base plate 201. One end face of the lower support rod 204 is fixedly connected to the lower plane of the upper base plate 201, and the other end is machined with a threaded hole C.

[0197] like Figures 11 to 14 As shown, the intermediate mechanism 3 is composed of an intermediate plate 301, a first reinforcing column 302, side ribs 303, a first enclosure 304, a second enclosure 305, a first sleeve 306, a second sleeve 307, a fifth positioning member 308 and a first limiting ring 309;

[0198] The first and second panels 304, 305 are symmetrically arranged in pairs on the upper plane of the middle panel 301. The first and second panels 304, 305 are arranged perpendicular to each other, thereby forming a square frame. Nine through-holes C are formed in a 3x3 square array in the portion of the middle panel 301 enclosed by the square frame. The first reinforcement columns 302 are cylindrical, and four first reinforcement columns 302 are arranged in a square array within the square frame. One end of the first reinforcement column 302 is fixedly connected to the upper plane of the middle panel 301, and the other end is machined with a threaded hole D. The first reinforcement columns 302 are staggered relative to the through-holes C.

[0199] The side ribs 303 are arranged at a certain interval around the outer periphery of the square frame, and the side ribs 303 connect the middle plate 301 and the first enclosure plate 304 or the second enclosure plate 305;

[0200] The first sleeve 306 is annular in shape. Four first sleeves 306 are arranged at the four corners of the upper plane of the middle plate 301. The middle plate 301 also has four through holes D with corresponding diameters on the inner circles of the four first sleeves 306.

[0201] The first limiting ring 309 is annular in shape. Nine first limiting rings 309 are arranged on the lower plane of the middle plate 301. The inner circle of the first limiting ring 309 is concentric with the through hole C and has the same diameter. The second sleeve 307 is annular in shape. Four second sleeves 307 are arranged at the four corners of the lower plane of the middle plate 301. The second sleeves 307 are concentric with the through hole D.

[0202] The fifth positioning members 308 are cylindrical with two different diameters. Twelve of the fifth positioning members 308 are arranged on four sides of the lower plane of the middle plate 301, with three fifth positioning members 308 arranged on each side. The end surface of the fifth positioning member 308 with a larger diameter is fixedly connected to the lower plane of the middle plate 301.

[0203] The second sleeve 307, the fifth positioning member 308 and the first limiting ring 309 are arranged in a square array on the lower plane of the middle plate 301;

[0204] like Figures 15 to 17 As shown, the lower assembly plate 4 is composed of a lower base plate 401, a sixth positioning member 402, a seventh positioning member 403 and a second limiting ring 404; the lower plane of the lower base plate 401 is connected to the ground or a non-protective structure;

[0205] The second limiting ring 404 is annular in shape, and nine second limiting rings 404 are arranged in a square array on the upper plane of the lower base plate 401 , and the second limiting rings 404 and the first limiting ring 309 are arranged concentrically in the vertical direction.

[0206] Nine countersunk holes B are further formed on the lower plane of the lower base plate 401 , and the countersunk holes B are concentrically arranged corresponding to the second limiting ring 404 .

[0207] The sixth positioning member 402 is a cylinder with two diameters. Twelve sixth positioning members 402 are arranged on the four sides of the upper plane of the lower base plate 401. The end face with the larger diameter of the sixth positioning member 402 is fixedly connected to the upper plane of the lower base plate 401. The arrangement position of the sixth positioning member 402 and the fifth positioning member 308 are correspondingly concentrically arranged in the vertical direction.

[0208] The third sleeve 403 is annular and has a threaded hole B on its inner circle. The third sleeve 403 is arranged at the four corners of the upper plane of the lower base plate 401 and is concentrically arranged with the second sleeve 307 in the vertical direction.

[0209] The third sleeve 403, the sixth positioning member 402 and the second limiting ring 404 are arranged in a square array on the upper plane of the lower base plate 401;

[0210] The bottom ends of the plurality of upper outer springs 5 ​​are correspondingly sleeved on the larger diameter cylinders of the third positioning member 202 and the fourth positioning member 203 arranged in a square array, and are connected to the upper base plate 201;

[0211] The top ends of the plurality of upper outer springs 5 ​​are correspondingly sleeved on the larger diameter cylinders of the first positioning members 102 and the second positioning members 103 arranged in a square array, and are connected to the upper panel 101;

[0212] The bottom ends of the plurality of lower outer springs 7 are correspondingly sleeved on the outer circle of the second limiting rings 404 arranged in a square array and connected to the upper plane of the lower base plate 401. The top ends of the plurality of lower outer springs 7 are correspondingly sleeved on the first limiting rings 309 arranged in a square array and connected to the lower plane of the middle plate 301.

[0213] In addition, the bottom end of the other lower outer spring 7 is correspondingly sleeved on the outer circle of the sixth positioning member 402 and the third sleeve 403, and is connected to the upper plane of the lower base plate 401, and its top end is correspondingly sleeved on the outer circle of the fifth positioning member 308 and the second sleeve 307, and is connected to the lower plane of the middle plate 301.

[0214] like Figure 18-19 As shown, Example 1 also needs to be pre-pressed during the assembly process, and the pre-pressing treatment method can be performed according to pre-pressing scheme A.

[0215] Prestressing scheme A: After the upper spring mechanism is assembled, it needs to be tightened with the first pre-tightening bolt 9; after the upper spring mechanism is pressed to the pre-stressing specified value by a special pressure device, the pre-stressing specified value is determined by the design, and the first pre-tightening bolt 9 passes through the through hole B of the upper panel 101 and the through hole A of the second positioning member 103 from the upper plane of the upper panel 101 downward and is fastened to the fourth positioning member 203. The tightening action of the first pre-tightening bolt 9 enables the upper spring mechanism to maintain this pre-stressing specified value.

[0216] The pre-stressed upper spring mechanism is installed on the intermediate mechanism 3 from top to bottom. The lower support rod 204 of the upper spring mechanism passes through the through hole C of the intermediate mechanism 3 and the inner circle of the first limiting ring 309 and then extends into the lower spring mechanism.

[0217] The threaded hole D of the first reinforcing column 302 of the intermediate mechanism 3 and the countersunk hole A of the upper panel 101 are fixedly connected by bolts;

[0218] The upper panel 101 of the upper spring mechanism is fixedly connected to the upper end surface of the square frame of the intermediate mechanism 3 by welding. After the welding process is completed, the first pre-tightening bolt 9 is removed.

[0219] After the upper spring mechanism, intermediate mechanism 3, and lower spring mechanism are assembled, a second preload is performed. This preload is an integrated preload, during which both the upper and lower spring mechanisms are compressed and tightened using a second preload bolt 10. A dedicated pressure device is used to apply downward pressure to the upper panel 101 of the upper spring mechanism. The upper spring mechanism, together with the intermediate mechanism 3, compresses the lower outer spring 7 of the lower spring mechanism. During this compression process, the lower end face of the lower support rod 204 gradually inserts into the inner circle of the second retaining ring 404, and ultimately, the lower end face of the lower support rod 204 is connected to the upper surface of the lower base plate 404. Bolts are then used to secure the lower base plate 404 upward through the countersunk hole B and the threaded hole C of the lower support rod 204, thereby securing the lower base plate 404 to the lower support rod 204. At this point, the compression of the lower outer spring 7 has not reached the specified preload value, and the intermediate mechanism 3 continues to move downward, gradually forming a gap between the upper surface of the intermediate plate 301 and the lower surface of the upper base plate 201.

[0220] When the compression amount reaches the pre-stressing specified value, the second pre-tightening bolt 10 is used to pass through the inner circle of the first sleeve 306, the through hole of the middle plate 301 and the inner circle of the second sleeve 306 from the upper end face of the first sleeve 306 on the upper plane of the middle plate 301 and is fastened to the threaded hole B of the third sleeve 403 of the lower combined plate 4. The tightening action of the second pre-tightening bolt 10 enables the lower spring mechanism to maintain this pre-stressing specified value, and the pre-stressing scheme A is completed.

[0221] The load transfer relationship between the upper spring mechanism and the lower spring mechanism is a parallel relationship;

[0222] After the construction and manufacturing of the upper protected structure is completed and the deadweight load is stabilized, the upper panel 101 divides the deadweight load of the protected structure into load A and load B. The upper panel 101 directly transfers the load A to the upper outer spring 5. The upper outer spring 5 transfers the load A to the lower base plate 401 through the upper base plate 201 and the lower support rod 204. The lower base plate 401 transfers the load A to the ground or non-protected structure.

[0223] In addition, the upper panel 101 transfers the load B to the lower outer spring 7 through the intermediate mechanism 3, the lower outer spring 7 transfers the load B to the lower base plate 401, and the lower base plate 401 transfers the load B to the ground or non-protective structure.

[0224] After the construction of the upper protected structure is completed and the load is stable, the second pre-tightening bolt 10 is loosened to the designed position. The loosening distance of the second pre-tightening bolt 10 is determined according to the design.

[0225] Example 5

[0226] like Figures 1 to 3 As shown, a composite laminated spring vibration isolation device comprises an upper spring mechanism, an intermediate mechanism 3 and a lower spring mechanism;

[0227] The upper spring mechanism is composed of an upper combined plate 1, an upper outer spring 5 and a middle combined plate 2; the upper plane of the upper combined plate 1 is connected to the protected structure;

[0228] The upper outer spring 5 is arranged between the middle combination plate 2 and the upper combination plate 1, and the upper combination plate 1 is placed on the upper outer spring 5;

[0229] After the upper spring mechanism is assembled, the upper spring mechanism is arranged on the intermediate structure 3 from top to bottom and fixedly connected to the intermediate structure 3;

[0230] The lower spring mechanism is composed of a lower combination plate 4 and a lower outer spring 7;

[0231] The lower outer spring 7 is arranged between the lower combined plate 4 and the intermediate structure 3 , and the intermediate mechanism 3 together with the upper spring mechanism is placed on the lower outer spring 7 .

[0232] like Figures 4 to 6 As shown, the upper combined panel 1 is composed of an upper panel 101, a first positioning member 102 and a second positioning member 103;

[0233] The first positioning member 102 and the second positioning member 103 are cylindrical bodies with two diameters. Five first positioning members 102 and four second positioning members 103 are arranged in a square array on the lower plane of the upper panel 101, with the four second positioning members 103 arranged at the four corners of the square array. A through hole A is formed in the middle of the second positioning member 103. Similarly, a through hole B is formed in the upper panel 101 at a position corresponding to the through hole A.

[0234] The end surfaces with larger diameters of the first positioning member 102 and the second positioning member 103 are fixedly connected to the lower plane of the upper panel 101;

[0235] The upper panel 101 is also provided with four sink holes A. Figures 7 to 10 As shown, the middle combination plate 2 is composed of an upper base plate 201, a third positioning member 202, a fourth positioning member 203 and a lower support rod 204;

[0236] The third positioning member 202 and the fourth positioning member 203 are cylindrical bodies with two diameters. Five third positioning members 202 and four fourth positioning members 203 are arranged in a square array on the upper plane of the upper base plate 201, and the four fourth positioning members 203 are arranged at the four corners of the square array. A threaded hole A is formed in the middle of each fourth positioning member 203.

[0237] The third and fourth positioning members 202 and 203 are fixedly connected to the upper plane of the upper base plate 201 at their larger end surfaces. The lower support rods 204 are cylindrical and arranged in a square array on the lower plane of the upper base plate 201. The lower support rods 204 are fixedly connected to the upper base plate 201 and are arranged in the same manner as the third and fourth positioning members 202 and 203 on the upper plane of the upper base plate 201.

[0238] One end surface of the lower support rod 204 is fixedly connected to the lower plane of the upper base plate 201, and a threaded hole C is processed at the other end.

[0239] like Figures 11 to 14 As shown, the intermediate mechanism 3 is composed of an intermediate plate 301, a first reinforcing column 302, side ribs 303, a first enclosure 304, a second enclosure 305, a first sleeve 306, a second sleeve 307, a fifth positioning member 308 and a first limiting ring 309;

[0240] The first and second panels 304, 305 are symmetrically arranged on the upper plane of the middle panel 301. The first and second panels 304, 305 are arranged perpendicular to each other to form a square frame. The middle panel 301 has nine through holes C in a 3x3 square array in the portion enclosed by the square frame.

[0241] The first reinforcement column 302 is a cylindrical body. Four first reinforcement columns 302 are arranged in a square array within the square frame. One end of the first reinforcement column 302 is fixedly connected to the upper surface of the middle plate 301, and the other end is processed with a threaded hole D. The first reinforcement column 302 and the through hole C are arranged at staggered positions. The side ribs 303 are arranged at regular intervals around the outer periphery of the square frame. The side ribs 303 connect the middle plate 301 and the first enclosure plate 304 or the second enclosure plate 305.

[0242] The first sleeve 306 is annular in shape, with four first sleeves 306 arranged at the four corners of the upper plane of the middle plate 301. The middle plate 301 also has four through holes D of corresponding diameters on the inner circumference of the four first sleeves 306. The first limiting ring 309 is annular in shape, with nine first limiting rings 309 arranged on the lower plane of the middle plate 301. The inner circumference of the first limiting ring 309 is concentric with the through hole C and has the same diameter. The second sleeve 307 is annular in shape, with four second sleeves 307 arranged at the four corners of the lower plane of the middle plate 301. The second sleeve 307 is concentric with the through hole D.

[0243] The fifth positioning members 308 are cylindrical with two different diameters. Twelve of the fifth positioning members 308 are arranged on four sides of the lower plane of the middle plate 301, with three fifth positioning members 308 arranged on each side. The end surface of the fifth positioning member 308 with a larger diameter is fixedly connected to the lower plane of the middle plate 301.

[0244] The second sleeve 307, the fifth positioning member 308 and the first limiting ring 309 are arranged in a square array on the lower plane of the middle plate 301;

[0245] like Figures 15 to 17 As shown, the lower assembly plate 4 is composed of a lower base plate 401, a sixth positioning member 402, a seventh positioning member 403 and a second limiting ring 404; the lower plane of the lower base plate 401 is connected to the ground or a non-protective structure;

[0246] The second limiting ring 404 is annular in shape, and nine second limiting rings 404 are arranged in a square array on the upper plane of the lower base plate 401 , and the second limiting rings 404 and the first limiting ring 309 are arranged concentrically in the vertical direction.

[0247] The lower surface of the lower base plate 401 is also provided with nine countersunk holes B, which are concentrically arranged with the second limiting ring 404. The sixth positioning member 402 is a cylinder with two different diameters. Twelve sixth positioning members 402 are arranged on four sides of the upper surface of the lower base plate 401. The end surface with the larger diameter of the sixth positioning member 402 is fixedly connected to the upper surface of the lower base plate 401. The sixth positioning member 402 is arranged concentrically with the fifth positioning member 308 in the vertical direction.

[0248] The third sleeve 403 is annular and has a threaded hole B on its inner circle. The third sleeve 403 is arranged at the four corners of the upper plane of the lower base plate 401 and is concentrically arranged with the second sleeve 307 in the vertical direction.

[0249] The third sleeve 403, the sixth positioning member 402 and the second limiting ring 404 are arranged in a square array on the upper plane of the lower base plate 401;

[0250] The bottom ends of the plurality of upper outer springs 5 ​​are correspondingly sleeved on the larger diameter cylinders of the third positioning member 202 and the fourth positioning member 203 arranged in a square array, and are connected to the upper base plate 201;

[0251] The top ends of the plurality of upper outer springs 5 ​​are correspondingly sleeved on the larger diameter cylinders of the first positioning members 102 and the second positioning members 103 arranged in a square array, and are connected to the upper panel 101;

[0252] The bottom ends of the plurality of lower outer springs 7 are correspondingly sleeved on the outer circle of the second limiting rings 404 arranged in a square array and connected to the upper plane of the lower base plate 401. The top ends of the plurality of lower outer springs 7 are correspondingly sleeved on the first limiting rings 309 arranged in a square array and connected to the lower plane of the middle plate 301.

[0253] In addition, the bottom end of the other lower outer spring 7 is correspondingly sleeved on the outer circle of the sixth positioning member 402 and the third sleeve 403, and is connected to the upper plane of the lower base plate 401, and its top end is correspondingly sleeved on the outer circle of the fifth positioning member 308 and the second sleeve 307, and is connected to the lower plane of the middle plate 301.

[0254] like Figure 18-19 As shown, embodiment 1 also needs to be pre-pressed during the assembly process, and the pre-pressing treatment method can be carried out according to pre-pressing scheme B. Pre-pressing scheme B:

[0255] After assembly, the upper spring mechanism must be tightened with a first preload bolt 9. After the upper spring mechanism is pressed to a preload value using a dedicated pressure device, this preload value is relatively small. At this point, the upper inner spring 6 and upper outer spring 5 are in a slightly compressed state. The first preload bolt 9 is inserted downward from the upper plane of the upper panel 101, sequentially through through-hole B of the upper panel 101 and through-hole A of the second positioning member 103, and then secured to the fourth positioning member 203. The tightening action of the first preload bolt 9 ensures that the upper spring mechanism maintains this preload value. The preloaded upper spring mechanism is installed on the intermediate mechanism 3. The lower support rod 204 of the upper spring mechanism passes through through-hole C of the intermediate mechanism 3 and the inner circumference of the first retaining ring 309, then extends into the lower spring mechanism. Simultaneously, the first reinforcement column 302 of the intermediate mechanism 3 passes through the upper base plate 201, but remains a certain distance from the upper panel 101.

[0256] The upper panel 101 of the upper spring mechanism is fixedly connected to the upper end surface of the square frame of the intermediate mechanism 3 by welding. After the welding process is completed, the first pre-tightening bolt 9 is removed. The dedicated pressure equipment is again used to apply downward pressure to the upper panel 101 of the upper spring mechanism. This pre-stressing process is an overall pre-stressing process, including the upper and lower spring mechanisms in a synchronous pre-stressing process.

[0257] The upper spring mechanism moves downward together with the intermediate mechanism 3, and the lower outer spring 7 and the lower inner spring 8 of the lower spring mechanism are compressed first. At this time, the lower support rod 204 is in a free state, and the lower end face of the lower support rod 204 is gradually inserted into the inner circle of the second limiting ring 404, and finally the lower support rod 204 is fixedly connected to the lower base plate 404 with bolts.

[0258] Then, the upper spring mechanism and the intermediate mechanism 3 continue to move downward, compressing the upper outer spring 5 of the upper spring mechanism and the lower inner spring 8 of the lower spring mechanism. After the first reinforcing column 302 contacts the upper panel 101, bolts are used to securely connect the first reinforcing column 302 to the upper panel 101. At this point, the upper spring mechanism and the intermediate mechanism 3 continue to move downward, gradually forming a gap between the upper plane of the intermediate plate 301 and the lower plane of the upper base plate 201. When the compression reaches the specified preload value, the second preload bolts 10 are used to tighten the lower support rod 204 of the intermediate mechanism 3 to the lower base plate 401. The tightening action of the second preload bolts 10 ensures that the lower spring mechanism maintains this specified preload value, thus completing preload solution B.

[0259] The load transfer relationship between the upper spring mechanism and the lower spring mechanism is a parallel relationship;

[0260] After the construction and manufacturing of the upper protected structure is completed and the deadweight load is stabilized, the upper panel 101 divides the deadweight load of the protected structure into load A and load B. The upper panel 101 directly transfers the load A to the upper outer spring 5. The upper outer spring 5 transfers the load A to the lower base plate 401 through the upper base plate 201 and the lower support rod 204. The lower base plate 401 transfers the load A to the ground or non-protected structure.

[0261] In addition, the upper panel 101 transfers the load B to the lower outer spring 7 through the intermediate mechanism 3, the lower outer spring 7 transfers the load B to the lower base plate 401, and the lower base plate 401 transfers the load B to the ground or non-protective structure.

[0262] After the construction of the upper protected structure is completed and the load is stable, the second pre-tightening bolt 10 is loosened to the designed position. The loosening distance of the second pre-tightening bolt 10 is determined according to the design.

[0263] Although the present invention has been described herein with reference to a number of illustrative embodiments thereof, it will be understood that numerous other modifications and implementations may be devised by those skilled in the art that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, the drawings, and the claims, numerous variations and modifications may be made to the components and / or layout of the subject combination arrangement. In addition to variations and modifications to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A composite laminated spring vibration isolation device, characterized in that: It comprises an upper spring mechanism, an intermediate mechanism (3) and a lower spring mechanism, wherein the upper spring mechanism is connected to the intermediate mechanism (3); The upper spring mechanism comprises an upper combined plate (1), an upper outer spring (5) and a middle combined plate (2); the upper plane of the upper combined plate (1) is connected to the protected structure; the upper outer spring (5) is arranged between the middle combined plate (2) and the upper combined plate (1); and the upper combined plate (1) is placed on the upper outer spring (5); The lower spring mechanism is composed of a lower combination plate (4) and a lower outer spring (7); the lower outer spring (7) is arranged between the lower combination plate (4) and the intermediate mechanism (3), and the intermediate mechanism (3) and the upper spring mechanism are placed on the lower outer spring (7); The middle combined plate (2) comprises an upper base plate (201), a third positioning member (202), a fourth positioning member (203) and a lower support rod (204); the third positioning member (202) and the fourth positioning member (203) are combined into a square array and arranged on the upper plane of the upper base plate (201); the lower support rods (204) are combined into a square array and arranged on the lower plane of the upper base plate (201) and are fixedly connected to the upper base plate (201); The intermediate mechanism (3) includes an intermediate plate (301), a first reinforcing column (302), side ribs (303), a surrounding plate (305), a first sleeve (306), a second sleeve (307), a fifth positioning member (308) and a first limiting ring (309); the surrounding plate (305) is arranged on the upper plane of the intermediate plate (301) to form a square frame; the first reinforcing column (302) is arranged in an array on the intermediate plate (301) and is fixedly connected to the intermediate plate (301); the second sleeve (307), the fifth positioning member (308) and the first limiting ring (309) are arranged in a square array on the lower plane of the intermediate plate (301); the side ribs (303) are arranged on the circumference of the outer wall of the surrounding plate (305); and the first sleeve (306) is arranged on the intermediate plate (301) around the surrounding plate (305).

2. The composite laminated spring vibration isolation device according to claim 1, characterized in that: The upper spring mechanism further comprises an upper inner spring (6), the upper plane of the upper composite plate (1) is connected to the protected structure, the upper inner spring (6) is arranged in an array between the middle composite plate (2) and the upper composite plate (1), the upper outer spring (5) is sleeved outside the upper inner spring (6) in parallel, the upper outer spring (5) is arranged between the middle composite plate (2) and the upper composite plate (1), and the upper composite plate (1) is placed above the upper inner spring (6) and the upper outer spring (5).

3. The composite laminated spring vibration isolation device according to claim 1, characterized in that: The lower spring mechanism further comprises lower inner springs (8); the lower inner springs (8) are arranged in an array between the lower combination plate (4) and the intermediate mechanism (3); the lower outer springs (7) are sleeved outside the lower inner springs (8) in parallel; the lower outer springs (7) are arranged between the lower combination plate (4) and the intermediate mechanism (3); and the intermediate mechanism (3) together with the upper spring mechanism are placed on the lower inner springs (8) and the lower outer springs (7).

4. The composite laminated spring vibration isolation device according to claim 1, characterized in that: The upper combined plate (1) comprises an upper panel (101), a first positioning member (102) and a second positioning member (103); the first positioning member (102) and the second positioning member (103) are combined into a square array and arranged on the lower plane of the upper panel (101).

5. The composite laminated spring vibration isolation device according to claim 1, characterized in that: The lower combined plate (4) is composed of a lower base plate (401), a sixth positioning member (402), a seventh positioning member (403) and a second limiting ring (404); the lower plane of the lower base plate (401) is connected to the ground or a non-protective structure; the seventh positioning member (403), the sixth positioning member (402) and the second limiting ring (404) are arranged in a square array on the upper plane of the lower base plate (401).

6. The composite laminated spring vibration isolation device according to claim 2, characterized in that: The bottom end of the upper inner spring (6) is correspondingly sleeved on the third positioning member (202) or the fourth positioning member (203), and the third positioning member (202) and the fourth positioning member (203) are fixedly connected to the upper bottom plate (201). The top end of the upper inner spring (6) is correspondingly sleeved on the first positioning member (102) or the second positioning member (103), and the first positioning member (102) and the second positioning member (103) are fixedly connected to the upper panel (101).

7. The composite laminated spring vibration isolation device according to claim 3, characterized in that: The lower inner spring (8) is arranged between the lower base plate (401) and the middle plate (301), and is respectively sleeved on the lower support rod (204) and the sixth positioning member (402).

8. The composite laminated spring vibration isolation device according to claim 7, characterized in that: The device is also equipped with a plug-in damper, which is arranged between the middle plate (301) and the lower base plate (401). The plug-in plate of the plug-in damper is fixedly connected to the lower plane of the middle plate (301), and the cavity of the plug-in damper is fixedly connected to the upper plane of the lower base plate (401). The cavity is filled with viscous damping liquid, and the plug-in plate is arranged inside the cavity and immersed in the viscous damping liquid.

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