Performance-adaptive anti-overturning vibration double-control support

Abstract

The invention provides a performance-adaptive anti-overturning vibration double-control support. The support comprises an upper convex outer cylinder and a lower convex outer cylinder, the limiting guide body is vertically arranged between the bottoms of the two outer barrels, the limiting guide body is sequentially sleeved with a first-order spring, a limiting partition plate, a second-order spring and a lower limiting base plate from top to bottom, and the upper end and the lower end of the first-order spring abut against the inner side of the bottom of the downwards-protruding outer barrel and the upper end face of the limiting partition plate respectively. The upper and lower ends of the second-order spring respectively abut against the lower end surface of the limiting clapboard and the upper end surface of the lower limiting base plate; the upper end of the limiting guide body is fixedly connected with the bottom of the downward-protruding outer cylinder, the lower end of the limiting guide body is fixedly connected with the damping tensile plate, the damping tensile plate is located between the bottom of the upward-protruding outer cylinder and the lower limiting base plate, and the space between the inner side of the bottom of the upward-protruding outer cylinder and the lower limiting base plate is filled with damping liquid; an upper limiting fixing piece and a lower limiting fixing piece are arranged on the inner side cylinder wall of the upwards-protruding outer cylinder and used for limiting or determining the upwards-moving limit position of the limiting partition plate and the downwards-moving limit position of the lower limiting base plate respectively.

Description

Technical Field

[0001] The invention relates to a seismic isolation / vibration device, belonging to the technical field of structural seismic isolation and vibration control, and in particular to a performance-adaptive anti-overturning and vibration-double-controlled bearing structure. Background Art

[0002] Passive seismic isolation and vibration control technology for structures began in the 1970s. Due to its excellent control of structural seismic response, it has attracted the attention of many scholars, carried out extensive research and has been widely used in practical engineering. In high-intensity areas, especially near the seismic fault or epicenter, the vertical seismic component is large, and the destructive effect on buildings cannot be ignored.

[0003] At the same time, with the development of urban rail transit, especially when the track is close to the building, the running of the train will cause the building structure to vibrate, affecting the safety of the building and the comfort of people living in it. In recent years, "industrial buildings" have been vigorously promoted, and the operation of machinery and equipment inside the building will also cause the vibration of the building to exceed the standard, affecting the structural safety and the comfort of people.

[0004] The research and development of vertical seismic isolation / vibration technology is mostly carried out along with the research and development of seismic isolation / vibration bearings. The seismic isolation / vibration bearings currently developed are only suitable for earthquakes or subway / mechanical vibrations, and cannot change their performance according to the different excitations they are subjected to. Structures may be subjected to various types of external excitations during their entire life cycle, and it is urgent to invent a bearing that can self-adjust its performance according to the different excitations it is subjected to. Summary of the invention

[0005] In order to solve the engineering problems in the prior art that the applicable scenarios of bearings are single and their tensile strength is poor, the present invention provides a self-adaptive anti-overturning vibration dual-control bearing whose mechanical properties can be changed according to different stimuli and which can prevent the bearing from being lifted off the superstructure and overturning when the bearing is subjected to tensile force. The bearing has a control effect on vibrations caused by earthquakes, subways and mechanical operations.

[0006] The technical problem to be solved can be implemented through the following technical solutions.

[0007] A performance-adaptive anti-overturning and vibration dual-control bearing, which has the following characteristics:

[0008] An upwardly convex outer cylinder (12) with an opening facing upward and in a cylindrical structure, the bottom of which forms a lower fixed connecting plate (2) of the support;

[0009] A downwardly convex outer cylinder (11) with an opening facing downward and in a cylindrical structure, the bottom of which forms an upper fixed connecting plate (1) of a support; the inner cylinder wall of the downwardly convex outer cylinder (11) is sleeved outside the outer cylinder wall of the upwardly convex outer cylinder (12);

[0010] A limiting guide body is vertically arranged between the bottom of the lower convex outer cylinder (11) and the bottom of the upper convex outer cylinder (12), wherein from top to bottom, a first-order spring (5), a limiting baffle (7), a second-order spring (6) and a lower limiting pad (8) are sequentially sleeved on the limiting guide body, wherein the upper end of the first-order spring (5) abuts against the inner side of the bottom of the lower convex outer cylinder (11), the lower end of the first-order spring (5) abuts against the upper end surface of the limiting baffle (7), and the upper end of the second-order spring (6) abuts against the inner side of the bottom of the lower convex outer cylinder (11). The lower end surface of the limit baffle (7), the lower end of the second-order spring (6) abuts against the upper end surface of the lower limit pad (8); the upper end of the limit guide body is fixedly connected to the bottom of the lower convex outer cylinder (11), and the lower end of the limit guide body is fixedly connected to a damping tensile plate (4), the damping tensile plate (4) is located between the bottom of the upper convex outer cylinder (12) and the lower limit pad (8), and the gap between the inner side of the bottom of the upper convex outer cylinder (12) and the lower limit pad (8) is filled with damping fluid;

[0011] An upper limit fixing member and a lower limit fixing member are provided on the inner wall of the upward convex outer cylinder (12), wherein the upper limit fixing member is used to limit or determine the upper limit position of the limit partition (7), and the lower limit fixing member is used to limit or determine the lower limit position of the lower limit pad (8).

[0012] The second-order spring (6) in a compressed state provides an initial preload for the support, and the upper limit fixing member and the lower limit fixing member limit the vertical displacement of the limit partition (7) and the lower limit pad (8), thereby maintaining the preload of the second-order spring (6).

[0013] Furthermore, the inner diameter of the wall of the lower convex outer cylinder (11) is not less than the outer diameter of the wall of the upper convex outer cylinder (12).

[0014] Preferably, the position limiting guide body is a position limiting guide cylinder (3) in a cylindrical structure.

[0015] Preferably, a downward convex screw rod (16) protruding from the bottom surface of the downward convex outer cylinder (11) is provided on the inner bottom of the downward convex outer cylinder (11); and the upper end of the limiting guide cylinder (3) is threadedly connected to the downward convex screw rod (16).

[0016] Preferably, the upper end surface of the damping tensile plate (8) is provided with an upwardly protruding screw rod (17) protruding from the end surface, and the lower end of the limiting guide cylinder (3) is threadedly connected to the upwardly protruding screw rod (17).

[0017] Preferably, the upper limit fixing member is an upper limit fixing cylinder (10) with a cylindrical structure, which is fixed to the upper side end of the cylinder body of the upper convex outer cylinder (12) via an upper fixing bolt (13); the lower limit fixing member is a lower limit fixing cylinder (9) with a cylindrical structure, which is fixed to the lower side end of the cylinder body of the upper convex outer cylinder (12) via a lower fixing bolt (14).

[0018] Furthermore, the lower limit pad (4) is fixedly connected to or integrally formed with the lower limit fixing member.

[0019] Furthermore, the damping tensile plate (4) is provided with a through hole for facilitating the passage of the damping fluid.

[0020] Furthermore, the first-order spring (5) is a disc spring, a wave spring or a coil spring; and the second-order spring (6) is a disc spring, a wave spring or a coil spring.

[0021] The performance-adaptive anti-overturning and vibration dual-control bearing described in the present invention mainly has the following advantages and beneficial effects:

[0022] 1) The upper limit fixing cylinder and the lower limit fixing cylinder are used to limit the limit partition and the lower limit pad respectively, so as to maintain the pre-compression deformation of the second-order spring and the pre-compression of the support.

[0023] 2) When the support is in a compressed state, when the upper structure of the support is subjected to external excitation, resulting in a small compression deformation of the support, the elastic force generated by the compression deformation of the first-order spring is less than the preload of the second-order spring. During the compression process, only the first-order spring is deformed, and the compressive stiffness of the support is the larger first-order stiffness; when the support is subjected to a larger external excitation, resulting in a larger compression deformation, the elastic force generated by the compression of the first-order spring is greater than the preload of the second-order spring, the first-order spring and the second-order spring are deformed together, and the stiffness of the support becomes the smaller second-order stiffness, thereby realizing an overall stiffness change.

[0024] 3) When the support is in a tension state, the upper structure of the support is subjected to external excitation, resulting in a small lift-off effect on the support. The lift-off force is less than the preload of the second-order spring, and the entire support is in a locked state without deformation. When the support is subjected to a large lift-off effect, the lift-off force exceeds the preload of the second-order spring, causing the second-order spring of the support to be compressed and deformed, and the support exhibits a large anti-lift-off stiffness as a whole.

[0025] 4) During the deformation of the support, the flow resistance generated by the damping fluid flowing through the damping hole plays an energy-dissipating role.

[0026] 5) All components of the performance-adaptive anti-overturning and vibration dual-control bearing can be standardized and batch-processed in the factory, and assembled and fixed by threads or high-strength bolts, which is easy to repair and replace.

[0027] 6) The present invention uses a performance-adaptive anti-overturning vibration dual-control bearing to solve the problems of conventional bearings that have immutable performance, single adaptability to scenarios, and weak tensile strength. It gives full play to the isolation / vibration capability of the vibration dual-control bearing, and can automatically adjust mechanical properties such as component stiffness according to changes in external excitation conditions. The energy dissipation capacity of the bearing can further reduce the dynamic response of the upper structure, and it has an anti-overturning effect to prevent the upper structure from overturning. It can ensure the human comfort and structural safety of the structure under the combined excitation of wind vibration, subway vibration, machine vibration, and earthquake action. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The overall structural diagram of the performance-adaptive anti-overturning and vibration dual-control bearing in the first embodiment is disclosed;

[0029] Figure 2 A schematic diagram of the initial state of compression after the upper structure of the performance adaptive anti-overturning and vibration dual-control bearing in the first embodiment is installed is disclosed;

[0030] Figure 3 A schematic diagram of the small compressive deformation of the performance-adaptive anti-overturning vibration dual-control bearing in the large compressive stiffness working state in the first embodiment is disclosed;

[0031] Figure 4 A schematic diagram of large compressive deformation of the performance-adaptive anti-overturning vibration dual-control bearing in a small compressive stiffness working state in the first embodiment is disclosed;

[0032] Figure 5 A schematic diagram of the lifting and locking working state of the performance-adaptive anti-overturning and vibration-vibration dual-control support in the first embodiment is disclosed;

[0033] Figure 6 The schematic diagram of deformation of the performance-adaptive anti-overturning vibration dual-control bearing in the first embodiment under the working state of large lift-off stiffness is disclosed;

[0034] Figure 7 The overall structural diagram of the performance-adaptive anti-overturning and vibration-damping dual-control bearing tension locking structure in the second embodiment is disclosed;

[0035] In the figure: 1. upper fixed connecting plate; 2. lower fixed connecting plate; 3. limit guide cylinder; 4. damping tensile plate; 5. first-order spring; 6. second-order spring; 7. limit partition; 8. lower limit pad; 9. lower limit fixing cylinder; 10. upper limit fixing cylinder; 11. lower convex outer cylinder; 12. upper convex outer cylinder; 13. upper fixing bolt; 14. lower fixing bolt; 15. damping fluid; 16. lower convex screw; 17. upper convex screw; 18. damping hole. DETAILED DESCRIPTION

[0036] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments. In the accompanying drawings, the same reference numerals always represent the same features. The following is a further detailed description in conjunction with the accompanying drawings and specific embodiments.

[0037] First embodiment

[0038] refer to Figure 1 Combined with Figure 2-Figure 4 , Figure 1 The overall structural diagram of the performance-adaptive anti-overturning and vibration dual-control bearing provided by the first embodiment of the present invention is disclosed. The performance-adaptive anti-overturning and vibration dual-control bearing provided by the first embodiment of the present invention comprises an upper fixed connecting plate 1, a lower fixed connecting plate 2, a limit baffle 7, a lower limit pad 8 and a damping tensile plate 4, a limit guide cylinder 3 is penetrated by a first-order spring 5, a second-order spring 6, a limit baffle 7 and a lower limit pad 8, an upper convex outer cylinder 12 is provided with an upper limit fixing cylinder 10 and a lower limit fixing cylinder 9 on the inner side, and the lower limit fixing cylinder 9 is filled with a damping liquid 15.

[0039] The further specific structure and functional relationship are as follows:

[0040] The second-order spring 6 is in a compressed state to provide an initial preload for the support, and the upper limit fixing cylinder 10 and the lower limit fixing cylinder 9 limit the vertical displacement of the limit partition 7 and the lower limit pad 8 to maintain the preload of the second-order spring 6.

[0041] The lower fixed connecting plate 2 is provided with an upper convex outer cylinder 12 , and the upper fixed connecting plate 1 is provided with a lower convex outer cylinder 11 , and the inner diameter of the lower convex outer cylinder 11 is not less than the outer diameter of the upper convex outer cylinder 12 .

[0042] An upper limit fixing cylinder 10 and a lower limit fixing cylinder 9 are arranged inside the upper convex outer cylinder 12 .

[0043] The upper fixed connecting plate 1 is provided with a lower convex screw rod 16, the damping tensile plate 4 is provided with an upper convex screw rod 17, and the limiting guide cylinder 3 is fixedly connected with the upper fixed connecting plate 1 and the damping tensile plate 4 through threads.

[0044] The upper limit fixing cylinder 10 is fixed to the upper convex outer cylinder 12 by an upper fixing bolt 13 , and the lower limit fixing cylinder 9 is fixed to the upper convex outer cylinder 12 by a lower fixing bolt 14 .

[0045] The first-order spring 5 and the second-order spring 6 can be different types such as disc springs, wave springs, and helical springs.

[0046] When the support is installed and the upper load is applied, the first-order spring 5 of the support is compressed and deformed, and the upper fixed connecting plate 1 moves downward, driving the limiting guide cylinder 3 and the damping tensile plate 4 to move downward together.

[0047] When the upper structure of the support is subjected to external excitation, causing the support to undergo a small compressive deformation, the first-order spring 5 undergoes compressive deformation, and the elastic force generated is less than the preload of the second-order spring 6. The limit baffle 7 does not move. During the deformation process, only the first-order spring 5 is deformed, and the compressive stiffness of the support presents a large first-order stiffness. As the external excitation increases or changes, the support undergoes a large compressive deformation, and the elastic force generated by the compression of the first-order spring 5 exceeds the preload of the second-order spring 6. The limit baffle 7 separates from the upper limit fixing cylinder 10 and moves downward. The first-order spring 5 and the second-order spring 6 are deformed together, and the support stiffness becomes a smaller second-order stiffness, thereby realizing an overall stiffness change.

[0048] Continue to refer Figure 5 and Figure 6 , the upper structure of the support is subjected to external excitation, resulting in a small lifting effect on the support, and the lifting force is less than the preload of the second-order spring 6. The damping tensile plate 4 abuts against the lower limit pad 8, and the entire support is in a locked state, limiting the support from lifting and deformation; when the support is subjected to a larger lifting effect, the lifting force exceeds the preload of the second-order spring 6, and the upper fixed connecting plate 1 drives the limit guide cylinder 3 and the damping tensile plate 4 to move upward together, and the lower limit pad 8 separates from the lower limit fixed cylinder 9 and moves upward together with the damping tensile plate 4, causing the second-order spring 6 of the support to be compressed and deformed, and the whole presents a larger anti-lift-off stiffness.

[0049] Second embodiment

[0050] refer to Figure 7 , discloses the overall structural diagram of the performance adaptive anti-overturning vibration dual-control bearing tension locking structure provided by the second embodiment of the present invention. Figure 7 In the second embodiment, the lower limit pad 8 and the lower limit fixing tube 9 are an integrated structure. When the support is pulled, the support is in a lifted and locked state regardless of the size of the pulling force, thereby preventing the structure from overturning.

[0051] During the deformation of the support, the flow resistance generated by the damping fluid 15 flowing through the damping hole 18 plays an energy dissipation role.

[0052] The performance-adaptive anti-overturning vibration dual-control bearing provided by the present invention comprises an upper fixed connecting plate, a limit guide cylinder, a damping tensile plate and a lower fixed connecting plate, the limit guide cylinder is penetrated by a first-order spring, a second-order spring, a limit baffle and a lower limit pad, and the lower limit fixed cylinder is filled with damping fluid. A preload is applied to the second-order spring, and the displacement of the limit baffle and the lower limit pad is limited by the upper limit fixed cylinder and the lower limit fixed cylinder to maintain the preload. The bearing is filled with damping fluid, and the damping force generated by the damping fluid flowing through the damping hole during the deformation of the bearing can exert its energy dissipation capacity. When the upper structure of the bearing is subjected to external excitation to cause the bearing to produce a small compression deformation, only the first-order spring is compressed, and the bearing presents a large compression stiffness at this time; as the external excitation increases, the compression deformation of the bearing further increases, so that the compression force of the first-order spring exceeds the preload of the second-order spring, and the first-order spring and the second-order spring are compressed and deformed together, and the bearing presents a small compression stiffness. When the support is under tension, the preload applied by the second-order disc spring limits the support from lifting and deformation, and the support is in a lifted and locked state; as the tension increases, when the tension on the support exceeds the preload of the second-order disc spring, the second-order disc spring is compressed and deformed, and the support exhibits a large tensile stiffness. The support performance is adaptive according to different external excitations, and it has a stable energy dissipation capacity.

[0053] Each component of the performance-adaptive anti-overturning and vibration dual-control bearing provided by the present invention can be standardized and batch-processed in a factory, and can be assembled and fixed by threads or high-strength bolts, which is convenient for maintenance and replacement.

[0054] The present invention utilizes a performance-adaptive anti-overturning and vibration-vibration dual-control bearing to solve the problems of conventional bearings that have immutable performance, single adaptability to scenarios, and weak tensile strength. It gives full play to the isolation / vibration capability of the vibration-vibration dual-control bearing, and can automatically adjust mechanical properties such as component stiffness according to changes in external excitation conditions. The energy dissipation capacity of the bearing can further reduce the dynamic response of the upper structure, and it has an anti-overturning effect to prevent the upper structure from overturning. It can ensure the human comfort and structural safety of the structure under the combined excitation of wind vibration, subway vibration, machine vibration, and earthquake action.

[0055] The present invention and its embodiments are described schematically above, and the description is not restrictive. What is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. It should also be noted that although the present invention has been disclosed as above with preferred embodiments, the above embodiments are not intended to limit the present invention. For any technician familiar with the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

[0056] It should also be understood that, unless otherwise specified or indicated, the terms "first", "second", "third", etc. in the specification are merely used to distinguish between the various components, elements, steps, etc. in the specification, and are not used to indicate the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0057] It should also be recognized that the terms described herein are used only to describe specific embodiments and are not intended to limit the scope of the invention. It should be noted that the singular forms "a" and "an" used herein and in the appended claims include plural references unless the context clearly indicates otherwise. For example, a reference to "a step" or "a device" means a reference to one or more steps or devices, and may include secondary steps and secondary devices. All conjunctions used should be understood in the broadest sense. And, the word "or" should be understood to have the definition of a logical "or", rather than a logical "exclusive or", unless the context clearly indicates otherwise. In addition, the implementation of embodiments of the present invention may include performing selected tasks manually, automatically, or in combination.

Claims

1. A performance-adaptive anti-overturning and vibration dual-control bearing, characterized in that: include: An upwardly convex outer cylinder (12) with an opening facing upward and in a cylindrical structure, the bottom of which forms a lower fixed connecting plate (2) of the support; A downwardly convex outer cylinder (11) with an opening facing downward and in a cylindrical structure, the bottom of which forms an upper fixed connecting plate (1) of a support; the inner cylinder wall of the downwardly convex outer cylinder (11) is sleeved outside the outer cylinder wall of the upwardly convex outer cylinder (12); A limiting guide body is vertically arranged between the bottom of the lower convex outer cylinder (11) and the bottom of the upper convex outer cylinder (12), wherein from top to bottom, a first-order spring (5), a limiting baffle (7), a second-order spring (6) and a lower limiting pad (8) are sequentially sleeved on the limiting guide body, wherein the upper end of the first-order spring (5) abuts against the inner side of the bottom of the lower convex outer cylinder (11), the lower end of the first-order spring (5) abuts against the upper end surface of the limiting baffle (7), and the upper end of the second-order spring (6) abuts against the inner side of the bottom of the lower convex outer cylinder (11). The lower end surface of the limit baffle (7), the lower end of the second-order spring (6) abuts against the upper end surface of the lower limit pad (8); the upper end of the limit guide body is fixedly connected to the bottom of the lower convex outer cylinder (11), and the lower end of the limit guide body is fixedly connected to a damping tensile plate (4), the damping tensile plate (4) is located between the bottom of the upper convex outer cylinder (12) and the lower limit pad (8), and the gap between the inner side of the bottom of the upper convex outer cylinder (12) and the lower limit pad (8) is filled with damping fluid; An upper limit fixing member and a lower limit fixing member are provided on the inner wall of the upward convex outer cylinder (12), wherein the upper limit fixing member is used to limit or determine the upper limit position of the limit partition (7), and the lower limit fixing member is used to limit or determine the lower limit position of the lower limit pad (8).

2. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 1 is characterized in that: The second-order spring (6) in a compressed state provides an initial preload for the support, and the upper limit fixing member and the lower limit fixing member are used to limit the vertical displacement of the limit partition (7) and the lower limit pad (8), thereby maintaining the preload of the second-order spring (6).

3. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 1 is characterized in that: The inner diameter of the wall of the lower convex outer cylinder (11) is not less than the outer diameter of the wall of the upper convex outer cylinder (12).

4. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 1 is characterized in that: The position limiting guide body is a position limiting guide cylinder (3) in a cylinder structure.

5. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 4 is characterized in that: A downward convex screw rod (16) protruding from the bottom surface of the downward convex outer cylinder (11) is provided on the inner bottom of the downward convex outer cylinder (11); the upper end of the position limiting guide cylinder (3) is threadedly connected to the downward convex screw rod (16).

6. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 4 is characterized in that: The upper end surface of the damping tension plate (8) is provided with an upwardly protruding screw rod (17) protruding from the end surface, and the lower end of the position limiting guide cylinder (3) is threadedly connected to the upwardly protruding screw rod (17).

7. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 1 is characterized in that: The upper limit fixing member is an upper limit fixing cylinder (10) with a cylindrical structure, which is fixed to the upper side end of the cylinder body of the upper convex outer cylinder (12) via an upper fixing bolt (13); the lower limit fixing member is a lower limit fixing cylinder (9) with a cylindrical structure, which is fixed to the lower side end of the cylinder body of the upper convex outer cylinder (12) via a lower fixing bolt (14).

8. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 1 is characterized in that: The lower limit pad (8) is fixedly connected to or integrally formed with the lower limit fixing member.

9. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 1 is characterized in that: The damping tensile plate (4) is provided with a through hole for facilitating the passage of the damping fluid.

10. The performance-adaptive anti-overturning and vibration dual-control bearing according to claim 1, characterized in that: The first-order spring (5) is a disc spring, a wave spring or a coil spring; the second-order spring (6) is a disc spring, a wave spring or a coil spring.

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