A tensile and compressive strong metal energy dissipation self-resetting damper and its installation and use method

Abstract

The present invention belongs to the field of civil engineering technology, and specifically relates to a tension and compression type strong metal energy dissipation self-resetting damper and its installation and use method, including a cylinder body, a guide rod, a first metal bellows, a butterfly spring group, a pressure sensor and a second metal bellows, the guide rod is respectively connected to the first metal bellows, the butterfly spring group, the pressure sensor and the second metal bellows, the guide rod is connected to the cylinder body through a first connecting plate, a first limit plate, a first connecting bolt and a third connecting bolt, the cylinder body and the guide rod are respectively provided with a first ear plate and a second ear plate, the first ear plate and the second ear plate are respectively connected to the stress position of the building structure. It can be applied to the fields of shock absorption control of buildings and bridge structures and rapid recovery of structural use functions after earthquakes, and uses metal bellows for energy dissipation. The metal bellows has a stable energy dissipation capacity and a clear energy dissipation mechanism. There is no problem of out-of-plane instability when under pressure, and it has good application prospects in the field of civil engineering.

Description

Technical Field

[0001] The present invention belongs to the field of civil engineering technology, and specifically relates to a strong metal energy-absorbing self-resetting damper for tension and compression and its installation and use method, which can be applied to the fields of shock absorption control of buildings and bridge structures and rapid recovery of structural functions after earthquakes. Background Art

[0002] The recoverable function structure adopts a new earthquake-resistant design concept, which requires that the structure can quickly restore its use function after the earthquake while protecting lives, reducing the economic losses caused by the earthquake and the impact on people's normal life and production. The characteristic of this structural system is that it can restore its use function without repair after the earthquake or with a little repair in a partially used state, so it is easy to build and maintain, and has high cost-effectiveness throughout its life. The self-resetting energy-absorbing damper can be used as a basic component in recoverable function structures such as swing structures, self-resetting structures, replaceable component (part) structures and composite self-resetting structures. The characteristic of this damper is that the structure can provide a reset force to restore the structure to its initial position under the action of wind loads, earthquakes and other vibration loads, while consuming energy, it can reduce or even eliminate the residual deformation of the structure, and reduce the time and cost required for structural repair, so it has a wide range of application prospects.

[0003] The self-resetting function of the current self-resetting energy-absorbing damper is mainly realized by prestressed steel bars, shape memory alloys, springs, etc. The elastic deformation range of prestressed steel bars is small, and it is generally difficult to meet the requirements of inter-layer displacement of frame structures by using the elastic stage for self-resetting; shape memory alloys can provide self-resetting functions, but their performance is affected by temperature, and they need to be heated after deformation to restore them to their pre-deformation state, thereby reducing the feasibility of the material in practical engineering applications; springs are a good elastic element, and when they are compressed or stretched, they can provide a restoring force to restore to the initial equilibrium position, thereby realizing the self-resetting function, but because the restoring force that springs can provide is small, they will perform better in scaled model experiments, but in actual engineering, it is difficult to restore the structure to its initial position, so the practical application is limited.

[0004] The energy dissipation principle of the self-resetting energy dissipation damper is currently mainly achieved through friction energy dissipation, using metal elements of different shapes (X-shaped, U-shaped, etc.) or opening holes in metal elements to make them yield and deform to dissipate energy, and using magnetorheological fluid to dissipate energy. The principle of the friction energy dissipation method is clear, and the structure of the damper is relatively simple. However, under the action of reciprocating loads, the friction interface will gradually become smooth, and the friction coefficient will change, thereby reducing the friction force, resulting in unstable energy dissipation capacity and reduced reliability during long-term use. The method of using the yield deformation of metal elements of a specific shape to dissipate energy has a stable energy dissipation capacity and a clear energy dissipation mechanism. However, the damper made by this method has asymmetric tension and compression, and the earthquake action belongs to a reciprocating random load. Therefore, the damper is required to exhibit the same characteristics under tension and compression. The method of using magnetorheological fluid to dissipate energy requires providing a changing magnetic field by controlling the change of current to obtain a control force. This method requires a specific control path, which makes the structure of the magnetorheological damper relatively complicated. In addition, the use of magnetorheological fluid makes it difficult to seal the energy dissipation element, and it is easy to leak. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects of the prior art and to provide a metal energy-absorbing self-resetting damper with strong tension and compression, high restoring force, stable energy dissipation capacity, easy replacement, no influence of temperature, low cost and relatively simple structure.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] A tensile and compressive strong metal energy-absorbing self-resetting damper comprises a cylinder body, a guide rod, a first metal bellows, a butterfly spring group, a pressure sensor and a second metal bellows. The guide rod is respectively connected to the first metal bellows, the butterfly spring group, the pressure sensor and the second metal bellows. The guide rod is connected to the cylinder body through a first connecting plate, a first limiting plate, a first connecting bolt and a third connecting bolt. The cylinder body and the guide rod are respectively provided with a first ear plate and a second ear plate. The first ear plate and the second ear plate are respectively connected to the stress-bearing position of the building structure.

[0008] The guide rod end is provided with an end threaded connection, and the threaded connection of the guide rod end is respectively connected to the limit nut and the connecting joint, and the connecting joint is provided with a second ear plate and a second circular hole.

[0009] The middle end of the guide rod is provided with two sets of axial side threaded connections, and the two sets of threaded connections at the middle end are respectively connected to the pressure transmission nut. A butterfly spring group, a pressure sensor and a second limit plate are mounted on the guide rod. The pressure transmission nut fixes the butterfly spring group and the pressure sensor by pressing the second limit plate.

[0010] A first limit plate is arranged outside the second limit plate. The first limit plate, the second limit plate, the fixed butterfly spring group and the pressure sensor are pre-stressed and connected as a whole through a pre-stressing installation screw and a nut. The nut adjusts the pre-stress and pre-stressing position of the butterfly spring group. The first limit plate is fixed to the tube wall of the cylinder body through a third connecting bolt.

[0011] The left and right sealing plates of the cylinder body are connected to the cylinder body tube wall along the cylinder body axial direction through the fourth connecting bolts. A circular hole with the same diameter as the guide rod is opened in the middle of the right sealing plate, and the guide rod enters the cylinder body through this circular hole.

[0012] The cylinder tube wall is evenly provided with two rows of first limit adjustment holes and second limit adjustment holes along the radial direction. The first limit adjustment hole is used to connect the first connecting plate and is located at the end of the cylinder body. The second limit adjustment hole is used to connect the first limit plate and is located in the middle of the cylinder body.

[0013] The guide rod is provided with a rectangular groove, which matches the first protrusion on the first connecting plate and the second protrusion on the second limiting plate, and is used to position the first connecting plate and the first limiting plate. The second bolt hole on the first connecting plate is aligned with the first limiting adjustment hole, and then the cylinder body is fixedly connected to the first connecting plate through the first connecting bolt.

[0014] The middle part of the first metal bellows and the second metal bellows is a corrugated section, and the two end parts are straight sections, which are respectively connected to the cylinder body and the guide rod. The crests and troughs of the first metal bellows and the second metal bellows are both U-shaped, one end of which is fixedly connected to the second connecting plate, and the other end is provided with a wedge-shaped opening, which is connected to the guide rod through a fastener.

[0015] The butterfly spring group and the pressure sensor pass through the guide rod and are located between the second limit plates. The pressure sensor is arranged in the middle or on both sides of the butterfly spring group. The pressure sensor is used for detecting the pre-pressure of the butterfly spring group. The fastener is a circular ring-shaped metal part with an opening. The first bolt holes are respectively opened in the upper and lower parts of one side of the fastener opening. The first metal bellows or the second metal bellows is fixed to the guide rod through the fifth connecting bolt on one side of the fastener opening.

[0016] The first connecting plate, the second connecting plate, the first limiting plate and the second limiting plate are in the shape of circular rings. The outer diameters of the first connecting plate and the first limiting plate are 1mm-2mm smaller than the inner diameter of the cylinder body. The first connecting bolt, the second connecting bolt and the third connecting bolt are friction type 8.8 or 10.9, with specifications of M12, M16, M20, M22, M24, M27, M30 and M36.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The present invention introduces a metal bellows for energy dissipation. The energy dissipation capacity can be adjusted by changing the number of corrugations. The stiffness can be adjusted by combining series and parallel connections or by changing the thickness of the metal bellows according to demand. It is suitable for civil engineering where high stiffness requirements are required. The metal bellows has a stable energy dissipation capacity, a clear energy dissipation mechanism, and no out-of-plane instability problem when under pressure. It has good application prospects in the field of civil engineering.

[0019] (2) In the present invention, a pair of metal bellows with the same parameters are arranged on both sides of the butterfly spring group. When the damper is compressed, the first metal bellows on the left is compressed and the second metal bellows on the right is pulled. When the damper is pulled, the situation is just the opposite. However, no matter whether the damper is in a compressed or pulled state, the combined force of the first metal bellows and the second metal bellows is always the same, thus effectively solving the problem of unequal tension and compression strength of metal dampers in the prior art.

[0020] (3) The present invention utilizes the butterfly springs to have the advantages of flexible arrangement such as overlapping, matching or composite combination according to the stiffness requirements, and the butterfly spring group after combination has the characteristics of small deformation, high load-bearing capacity and high stiffness, and can provide a large reset force, so that it can be used in actual projects in the field of civil engineering rather than just in model experiments. A single butterfly spring can provide a stiffness of about 40 kN / mm, and the present invention can be flexibly combined and adjusted according to the working conditions.

[0021] (4) The present invention relates to a tensile and compressive strong metal energy dissipation self-resetting damper with good fatigue resistance, relatively simple structure, low cost, easy replacement, flexible use, strong applicability, and is particularly suitable for use in restorable functional structures. It can effectively reduce the residual displacement of the structure after an earthquake and reduce the time and cost required for structural repair. It is also suitable for the rapid construction of prefabricated building structures and has a good market promotion and application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0024] Figure 3 is a three-dimensional schematic diagram of the damper of the present invention;

[0025] Figure 4 It is a left-side structural schematic diagram of the present invention;

[0026] Figure 5 It is a right view structural schematic diagram of the present invention;

[0027] Figure 6 1-1 is a cross-sectional view of the present invention;

[0028] Figure 7 It is the cross-sectional view 2-2 of the present invention;

[0029] Figure 8 is a three-dimensional schematic diagram of the fastener of the present invention;

[0030] Fig. 9 is a three-dimensional schematic diagram of a first connecting plate of the present invention;

[0031] Fig.10 is a three-dimensional schematic diagram of a second connecting plate of the present invention;

[0032] Fig.11 It is a three-dimensional schematic diagram of the first limiting plate of the present invention;

[0033] Fig.12 It is a three-dimensional schematic diagram of the second limiting plate of the present invention;

[0034] Fig.13 It is a three-dimensional schematic diagram of the first metal bellows of the present invention.

[0035] Numbers in the figure: 1 - cylinder body; 101 - left sealing plate; 102 - right sealing plate; 103 - fourth connecting bolt; 104 - first ear plate; 105 - first limit adjustment hole; 106 - second limit adjustment hole; 107 - first circular hole; 2 - guide rod; 201 - groove; 202 - connecting joint; 203 - second ear plate; 204 - second circular hole; 205 - end threaded connection; 206 - shaft side threaded connection; 3 - first metal bellows; 301 - wedge-shaped notch; 4 - butterfly spring group; 5 - pressure sensor; 6 - second metal bellows; 7 - first connecting plate; 701 - second bolt hole; 702 - first through hole; 703 - first protrusion; 8 - second connecting plate; 801 - second through hole; 9 - first limit plate; 901 - third through hole; 902 - third bolt hole; 10 - second limit plate; 1001 —second protrusion; 11 —pressure transmission nut; 12 —fastener; 1201 —first bolt hole; 1202 —fifth connecting bolt; 13 —pre-stressed mounting screw; 14 —limiting nut; 15 —first connecting bolt; 16 —second connecting bolt; 17 —third connecting bolt. DETAILED DESCRIPTION

[0036] A tension-compression and equal-strength metal energy-absorbing self-resetting damper comprises a cylinder body 1, a guide rod 2, a first metal bellows 3, a butterfly spring group 4, a pressure sensor 5 and a second metal bellows 6. The first metal bellows 3, the butterfly spring group 4, the pressure sensor 5 and the second metal bellows 6 are respectively connected to the guide rod 2. The guide rod 2 is connected to the cylinder body 1 through a first connecting plate 7, a first limiting plate 9, a first connecting bolt 15 and a third connecting bolt 17. The cylinder body 1 and the guide rod 2 are respectively provided with a first ear plate 104 and a second ear plate 203. The first ear plate 104 and the second ear plate 203 are respectively connected to the stress-bearing parts of the building structure.

[0037] The end of the guide rod 2 is provided with an end threaded connection 205, which is respectively connected to the limit nut 14 and the connection joint 202, and the connection joint 202 is provided with a second ear plate 203 and a second round hole 204. The middle end of the guide rod 2 is provided with two sets of axial side threaded connections 206, which are respectively connected to the pressure transmission nut 11. The guide rod 2 is provided with a butterfly spring group 4, a pressure sensor 5 and a second limit plate 10, and the pressure transmission nut 11 fixes the butterfly spring group 4 and the pressure sensor 5 by pressing the second limit plate 10.

[0038] The first limit plate 9 is arranged outside the second limit plate 10. The first limit plate 9, the second limit plate 10, the fixed butterfly spring group 4 and the pressure sensor 5 are connected as a whole through the pre-stressing installation screw 13 and the nut, which is convenient for fixed installation with the tube wall of the cylinder body 1, and at the same time ensures that the butterfly spring group 4 can be compressed and deformed, thereby providing a reset force. In addition to applying pre-stress, the pressure transmission nut 11 also ensures that the butterfly spring group 4 can be compressed and deformed regardless of whether the damper is subjected to pressure or tension load. The nut adjusts the pre-stress and pre-stress position of the butterfly spring group 4, and the first limit plate 9 is fixed to the tube wall of the cylinder body 1 through the third connecting bolt 17.

[0039] The cylinder body left side sealing plate 101 and right side sealing plate 102 are connected to the cylinder body 1 tube wall along the axial direction of the cylinder body 1 by the fourth connecting bolt 103. A circular hole with the same diameter as the guide rod 2 is opened in the middle of the right side sealing plate 102, and the guide rod 2 enters the cylinder body 1 through this circular hole. The cylinder body 1 tube wall is evenly opened with two rows of first limit adjustment holes 105 and second limit adjustment holes 106 along the radial direction. The first limit adjustment hole 105 is used to fix the first connecting plate 7 and is located near the two ends of the cylinder body 1. The second limit adjustment hole 106 is used to fix the first limit plate 9 and is located near the middle of the cylinder body 1. The guide rod 2 is provided with a rectangular groove 201, which cooperates with the first protrusion 703 on the first connecting plate 7 and the second protrusion 1001 on the second limiting plate 10, and is used to directly position the first connecting plate 7 and indirectly position the first limiting plate 9. The second bolt hole 701 on the first connecting plate 7 is aligned with the first limiting adjustment hole 105, and then the cylinder body 1 is fixedly connected to the first connecting plate 7 through the first connecting bolt 15. The middle part of the first metal bellows 3 and the second metal bellows 6 is a corrugated section, and the two end parts are straight sections, which are respectively used to connect with the cylinder body 1 and the guide rod 2. The first metal bellows 3 and the second metal bellows 6 are U-shaped in wave crest and wave trough, one end of which is fixedly connected with the second connecting plate 8 and the second through hole 801, and the right end of which is provided with a wedge-shaped opening 301, and is connected to the guide rod 2 through a fastener 12. The butterfly spring group 4 and the pressure sensor 5 both pass through the guide rod 2 and are located between the second limit plates 10. The pressure sensor 5 is arranged in the middle or on both sides of the butterfly spring group 4 and is used to detect the preload when the butterfly spring group 4 is preloaded. The butterfly spring group 4 is preloaded through a pressure conduction nut 11. The fastener 12 is a circular ring-shaped metal component with an opening. First bolt holes 1201 are respectively opened on the upper and lower parts of one side of the opening of the fastener 12. The first metal bellows 3 or the second metal bellows 6 is fixed to the guide rod 2 together by a fifth connecting bolt 1202 on the upper and lower parts of one side of the opening of the fastener 12.The first connecting plate 7, the second connecting plate 8, the first limiting plate 9 and the second limiting plate 10 are in the shape of a ring. The outer diameters of the first connecting plate 7 and the first limiting plate 9 are 1 mm-2 mm smaller than the inner diameter of the cylinder body 1. The first connecting plate 7 and the second limiting plate 10 are respectively provided with a first protrusion 703 and a second protrusion 1001 for assisting in positioning the second bolt hole 701 and the third bolt hole 902. The outer sides of the first metal bellows 3 and the second metal bellows 6 are welded to the second connecting plate 8 and then connected to the first connecting plate 8. The plate 7 is fixed to the tube wall of the cylinder body 1 by the second connecting bolt 16 and the first connecting bolt 15; the first limit plate 9 is fixed to the tube wall of the cylinder body 1 by the third connecting bolt 17, and together with the second limit plate 10 which is slightly larger than its inner diameter, ensures that the preload of the butterfly spring group 4 is not relaxed; the first connecting bolt 15, the second connecting bolt 16, and the third connecting bolt 17 are friction type 8.8 or 10.9, with specifications of M12, M16, M20, M22, M24, M27, M30, and M36.

[0040] A method for installing and using a tensile and compressive strong metal energy dissipation self-resetting damper.

[0041] A. Parts Installation

[0042] The guide rod 2 is provided with a first metal bellows 3, a butterfly spring assembly 4, a pressure sensor 5 and a second metal bellows 6;

[0043] B. Pre-press installation

[0044] The first limit plate 9, the second limit plate 10, the fixed butterfly spring group 4 and the pressure sensor 5 are pre-pressed and connected as a whole through the pre-pressing mounting screw 13, the third through hole 901 and the nut, the nut adjusts the pre-pressure and pre-pressure position of the butterfly spring group 4, and the first limit plate 9 is fixed to the tube wall of the cylinder body 1 through the third connecting bolt 17;

[0045] C. Apply pre-pressure

[0046] After the first limit plate 9 is fixed to the tube wall of the cylinder body 1 by the third connecting bolt 17, the nut on the pre-stressing screw rod 13 is loosened to ensure that the butterfly spring group 4 can be compressed and deformed, thereby providing a reset force, and the position of the pressure transmission nut 11 on the guide rod 2 is changed through the shaft-side threaded connection 206 to apply pre-stress;

[0047] D. Combination assembly

[0048] The first metal bellows 3 and the second metal bellows 6 are connected to the guide rod 2 through the fastener 12, and the guide rod 2 is connected to the cylinder body 1 through the first connecting plate 7, the first limiting plate 9, the first connecting bolt 15 and the third connecting bolt 17. The left side sealing plate 101 and the right side sealing plate 102 are respectively connected to the two sides of the cylinder body 1, and the first ear plate 104 and the second ear plate 203 are respectively connected to the guide rod 2, and the first ear plate 104 and the second ear plate 203 are respectively connected to the stress-bearing parts of the building structure.

[0049] The invention is further described below in conjunction with the technical scheme and the accompanying drawings.

[0050] like Figure 1 As shown in FIG. 7 , a tension and compression type metal energy dissipation self-resetting damper comprises a cylinder body 1, a guide rod 2, a first metal bellows 3,

[0051] Butterfly spring group 4, pressure sensor 5, second metal bellows 6, first connecting plate 7, second connecting plate 8, first limit plate 9, second limit plate 10, pressure conduction nut 11, fastener 12, preload installation screw 13, limit nut 14, first connecting bolt 15, second connecting bolt 16 and third connecting bolt 17. Pressure sensor 5 is a through-type pressure sensor, produced by Shenzhen Youzhongli Technology Co., Ltd., and the specific models are annular hollow type 50T pressure sensor, annular hollow type 100T pressure sensor, annular hollow type 200T pressure sensor, and annular hollow type 500T pressure sensor.

[0052] like Figure 1 , 3 As shown in Figures 6 and 7, the cross-section of the cylinder body 1 is in the shape of a circular tube and is made of ordinary steel. The left side sealing plate 101 and the right side sealing plate 102 of the cylinder body are both connected to the tube wall of the cylinder body 1 along the axial direction of the cylinder body 1 through the fourth connecting bolt 103. A circular hole with the same diameter as the guide rod 2 is opened in the middle of the right side sealing plate 102, and the guide rod 2 enters the interior of the cylinder body 1 through this circular hole. Two rows of first limit adjustment holes 105 and second limit adjustment holes 106 are evenly opened in the radial direction on the tube wall of the cylinder body 1. The first limit adjustment hole 105 is used to fix the first connecting plate 7, and is located near the two end positions of the cylinder body 1. The second limit adjustment hole 106 is used to fix the first limit plate 9, and is located near the middle position of the cylinder body 1. The left side sealing plate 101 is connected to the first ear plate 104 by welding. The first ear plate 104 is provided with a first circular hole 107 for connecting to the building structure.

[0053] like Figure 3 , 7As shown in Figures 9 and 10, the guide rod 2 is cylindrical and has threads at both ends and at the installation position of the pressure conduction nut 11. The guide rod 2 is located at the inner end of the cylinder body 1 and is installed with a limit nut 14 and has a rectangular groove 201 in the longitudinal direction. The rectangular groove 201 cooperates with the first protrusion 703 on the first connecting plate 7 and the second protrusion 1001 on the second limit plate 10, and is used to directly position the first connecting plate 7 and indirectly position the first limit plate 9 to ensure that the second bolt hole 701 on the first connecting plate 7 is aligned with the first limit adjustment hole 105, and then the cylinder body 1 is fixedly connected to the first connecting plate 7 through the first connecting bolt 15. The guide rod 2 is located at the outer end of the cylinder body 1 and is provided with a connecting joint 202. The connecting joint 202 has a screw hole inside and is connected to the guide rod 2 by thread. A second ear plate 203 is welded on the right side of the connecting joint 202, and a second circular hole 204 is opened on the second ear plate 203 for connection with the building structure.

[0054] like Figure 6 , 8 As shown in Figures 1 and 13, the middle part of the first metal bellows 3 and the second metal bellows 6 is a corrugated section, and the two end parts are straight sections, which are respectively used to connect with the cylinder body 1 and the guide rod 2. The first metal bellows 3 and the second metal bellows 6 have U-shaped crests and troughs, and the left end thereof is fixedly connected to the second connecting plate 8 and the second through hole 801, and the right end thereof has a wedge-shaped opening 301, and is connected to the guide rod 2 through a fastener 12.

[0055] like Figure 6 and 7 As shown, the butterfly spring group 4 can be overlapped, matched or combined according to the stiffness requirements of the actual project. The butterfly spring group 4 and the pressure sensor 5 both pass through the guide rod 2 and are located between the left and right second limit plates 10, wherein the pressure sensor 5 can be arranged in the middle of the butterfly spring group 4 or on both sides thereof, and is used to detect the preload when the butterfly spring group 4 is preloaded. The butterfly spring group 4 is preloaded through the pressure conduction nut 11. The specific parameters require that the single-piece butterfly spring provide a stiffness stress of 40kN / mm, an outer diameter of 200mm, an inner diameter of 102mm, a thickness of 9mm, and a spring height of 14.6mm. The butterfly spring group is used in actual projects in the field of civil engineering, and the specifications of the single-piece butterfly spring can be adjusted according to specific working conditions, and are not limited to the above technical parameters.

[0056] like Figure 6 and 7As shown, the second metal bellows 6 has the same parameters and connection mode as the first metal bellows 3, and is symmetrically arranged on both sides of the butterfly spring group 4. Two metal bellows with the same length, the same diameter, the same number of corrugations and the same thickness are used. When the damper is pulled, the first metal bellows 3 is pulled and the second metal bellows 6 is compressed. When the damper is compressed, the situation is just the opposite. Under the condition of equal relative displacement, although the tension and pressure of the two are different, the sum of the tension and pressure of the two is equal, thereby ensuring the tension and compression characteristics of the damper.

[0057] like Figure 8 As shown, the fastener 12 is a circular ring-shaped metal component with an opening, and first bolt holes 1201 are respectively opened at the upper and lower parts of one side of the opening of the fastener 12. The first metal bellows 3 or the second metal bellows 6 is fixed to the guide rod 2 through the fifth connecting bolt 1202 at the upper and lower parts of the opening of the fastener 12.

[0058] like Figure 9-12 As shown, the first connecting plate 7, the second connecting plate 8, the first limiting plate 9 and the second limiting plate 10 are all in the shape of a circular ring. Among them, the outer diameters of the first connecting plate 7 and the first limiting plate 9 are 1mm-2mm smaller than the inner diameter of the cylinder body 1, which is convenient for assembly. The first connecting plate 7 and the second limiting plate 10 are respectively provided with a first protrusion 703 and a second protrusion 1001, which are used to assist in positioning the second bolt hole 701 and the third bolt hole 902. The outer sides of the first metal bellows 3 and the second metal bellows 6 are welded to the second connecting plate 8, and then fixed to the tube wall of the cylinder body 1 with the first connecting plate 7 through the second connecting bolt 16 and the first bolt 15. The first limiting plate 9 is fixed to the tube wall of the cylinder body 1 through the third connecting bolt 17, and together with the second limiting plate 10 which is slightly larger than its inner diameter, ensures that the preload of the butterfly spring group 4 is not relaxed.

[0059] like Figure 6 , 7 As shown, after the butterfly spring group 4 applies pre-pressure by tightening the pressure transmission nut 11, the first limit plates 9 on the left and right sides of the butterfly spring group 4 are connected and fixed by the pre-pressure installation screw 13 to ensure that the pre-pressure is not lost. After the first limit plate 9 is fixed to the tube wall of the cylinder body 1 by the third connecting bolt 17, the pre-pressure installation screw 13 is loosened to ensure that the butterfly spring group 4 can be compressed and deformed, thereby providing a reset force. In addition to applying pre-pressure, the pressure transmission nut 11 also ensures that the butterfly spring group 4 can be compressed and deformed regardless of whether the damper is subjected to pressure or tension load.

[0060] The cross-sectional shape of the cylinder body can also be a rectangle or other cross-sectional shapes, in which case the shapes of the first connecting plate and the first limiting plate also change accordingly. The above is a specific implementation of the present invention. If other technicians in the field modify the present invention based on the technical principles of the present invention, and these modifications fall within the scope of the claims of the present invention and equivalent technologies, they are all within the protection scope of the present invention.

Claims

1. A metal energy dissipation self-resetting damper with tension and compression characteristics, characterized in that The invention comprises a cylinder body (1), a guide rod (2), a first metal bellows (3), a butterfly spring group (4), a pressure sensor (5) and a second metal bellows (6); the guide rod (2) is respectively connected to the first metal bellows (3), the butterfly spring group (4), the pressure sensor (5) and the second metal bellows (6); the guide rod (2) is connected to the cylinder body (1) via a first connecting plate (7), a first limiting plate (9), a first connecting bolt (15) and a third connecting bolt (17); the two sides of the cylinder body (1) are respectively connected to a left sealing plate (101) and a right sealing plate (102); the guide rod (2) is respectively connected to a first ear plate (104) and a second ear plate (203); the first ear plate (104) and the second ear plate (203) are respectively connected to the stress-bearing position of the building structure; The middle end of the guide rod (2) is provided with two sets of axial side threaded connections (206), the two sets of threaded connections (206) at the middle end are respectively connected to the pressure transmission nut (11), the guide rod (2) is sleeved with a butterfly spring group (4), a pressure sensor (5) and a second limit plate (10), and the pressure transmission nut (11) fixes the butterfly spring group (4) and the pressure sensor (5) by pressing the second limit plate (10); The middle parts of the first metal bellows (3) and the second metal bellows (6) are corrugated sections, and the two end parts are straight sections, which are respectively connected to the cylinder body (1) and the guide rod (2); the first metal bellows (3) and the second metal bellows (6) have U-shaped wave crests and wave troughs, one end of which is fixedly connected to the second connecting plate (8), and the other end of which is provided with a wedge-shaped opening (301), which is connected to the guide rod (2) via a fastener (12); the first metal bellows (3) and the second metal bellows (6) are symmetrically arranged on both sides of the butterfly spring group (4); The butterfly spring group (4) and the pressure sensor (5) pass through the guide rod (2) and are located between the two second limit plates (10). The pressure sensor (5) is arranged in the middle or on both sides of the butterfly spring group (4). The pressure sensor (5) is used to detect the pre-pressure of the butterfly spring group (4). The fastener (12) is a circular ring-shaped metal part with an opening. First bolt holes (1201) are respectively provided at the upper and lower parts of one side of the opening of the fastener (12). The first metal bellows (3) or the second metal bellows (6) is fixed to the guide rod (2) by a fifth connecting bolt (1202) on the one side of the opening of the fastener (12).

2. According to claim 1, a tensile and compressive strong metal energy dissipation self-resetting damper is characterized in that The end of the guide rod (2) is provided with an end threaded connection (205), the threaded connection (205) at the end of the guide rod (2) is respectively connected to the limit nut (14) and the connecting joint (202), and the connecting joint (202) is provided with a second ear plate (203) and a second circular hole (204).

3. According to claim 1, a tensile and compressive strong metal energy dissipation self-resetting damper is characterized in that A first limit plate (9) is arranged outside the second limit plate (10); the first limit plate (9), the second limit plate (10), the fixed butterfly spring group (4) and the pressure sensor (5) are pre-pressed and connected as one body via a pre-pressing mounting screw (13) and a nut; the nut adjusts the pre-pressing force and pre-pressing position of the butterfly spring group (4); the first limit plate (9) is fixed to the tube wall of the cylinder body (1) via a third connecting bolt (17).

4. According to claim 1, a tensile and compressive strong metal energy dissipation self-resetting damper is characterized in that The left sealing plate (101) and the right sealing plate (102) of the cylinder body are connected to the tube wall of the cylinder body (1) along the axial direction of the cylinder body via fourth connecting bolts (103); a circular hole having the same diameter as the guide rod (2) is opened in the middle of the right sealing plate (102); the guide rod (2) enters the interior of the cylinder body (1) through the circular hole.

5. According to claim 1, a tensile and compressive strong metal energy dissipation self-resetting damper is characterized in that The cylinder body (1) has two rows of first limit adjustment holes (105) and second limit adjustment holes (106) evenly arranged along the radial direction on the tube wall; the first limit adjustment holes (105) are used to connect the first connection plate (7) at the end of the cylinder body (1); and the second limit adjustment holes (106) are used to connect the first limit plate (9) at the middle of the cylinder body (1).

6. According to claim 1, a metal energy dissipation self-resetting damper with equal strength in tension and compression, characterized in that The guide rod (2) is provided with a rectangular groove (201), which matches the first protrusion (703) on the first connecting plate (7) and the second protrusion (1001) on the second limiting plate (10), and is used to position the first connecting plate (7) and the first limiting plate (9), and the second bolt hole (701) on the first connecting plate (7) is aligned with the first limiting adjustment hole (105), so that the cylinder body (1) and the first connecting plate (7) are fixedly connected by the first connecting bolt (15).

7. According to claim 1, a tensile and compressive strong metal energy dissipation self-resetting damper is characterized in that The first connecting plate (7), the second connecting plate (8), the first limiting plate (9) and the second limiting plate (10) are in the shape of a ring. The outer diameters of the first connecting plate (7) and the first limiting plate (9) are 1-2 mm smaller than the inner diameter of the cylinder body (1). The first connecting bolt (15), the second connecting bolt (16) and the third connecting bolt (17) are friction type 8.8 grade or 10.9 grade, and are any one of the specifications of M12, M16, M20, M22, M24, M27, M30 and M36.

8. The method for installing and using a tensile and compressive strong metal energy dissipation self-resetting damper according to any one of claims 1 to 7 is characterized in that The steps include: A. Parts Installation A first metal bellows (3), a butterfly spring assembly (4), a pressure sensor (5) and a second metal bellows (6) are mounted on the guide rod (2); B. Pre-press installation The first limit plate (9), the second limit plate (10), the fixed butterfly spring group (4) and the pressure sensor (5) are pre-pressed and connected into one piece via a pre-pressing mounting screw (13) and a nut, the nut adjusts the pre-pressing pressure and pre-pressing position of the butterfly spring group (4), and the first limit plate (9) is fixed to the tube wall of the cylinder body (1) via a third connecting bolt (17); C. Apply pre-pressure After the first limit plate (9) is fixed to the tube wall of the cylinder body (1) by means of the third connecting bolt (17), the nut on the pre-stressing mounting screw rod (13) is loosened to ensure that the butterfly spring assembly (4) can be compressed and deformed, thereby providing a reset force, and the position of the pressure transmission nut (11) on the guide rod (2) is changed through the shaft-side threaded connection (206) to thereby apply pre-stressing force; D. Combination assembly The first metal bellows (3) and the second metal bellows (6) are connected to the guide rod (2) via a fastener (12); the guide rod (2) is connected to the cylinder body (1) via a first connecting plate (7), a first limiting plate (9), a first connecting bolt (15) and a third connecting bolt (17); the two sides of the cylinder body (1) are respectively connected to a left sealing plate (101) and a right sealing plate (102); the guide rod (2) is respectively connected to a first ear plate (104) and a second ear plate (203); the first ear plate (104) and the second ear plate (203) are respectively connected to stress-bearing locations of a building structure.

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