Self-resetting buckling restrained brace

Abstract

The invention discloses a self-resetting buckling restrained brace, which relates to the technical field of buckling restraint, and adopts the technical scheme that the self-resetting buckling restrained brace comprises a restraint shell, a core material is arranged in the restraint shell, friction shells are fixedly connected to two sides of the restraint shell, a pressure adjusting shell is fixedly connected to the upper parts of the friction shells, and a servo motor is arranged in the pressure adjusting shell; the output end of the servo motor is provided with a worm, the worm is in meshed connection with a worm gear, the worm gear is fixedly connected with a third gear, the third gear is in meshed connection with a transmission rack, the lower portion of the transmission rack is fixedly connected with a fixed shell, and the lower portion of the fixed shell is fixedly connected with a mounting table. The friction plate is in contact with the surface of the core material, the core material moves in the constraint shell during an earthquake so as to generate friction energy consumption with the surface of the friction plate, and the energy consumption and shock absorption effects of the device are effectively improved through mutual complementation of friction of the friction plate and plastic deformation energy consumption of the core material.

Description

Technical Field

[0001] The present invention relates to the technical field of buckling restraint, and in particular to a self-resetting buckling restraint brace. Background Art

[0002] The research and development of self-righting buckling-restrained supports stems from the limitations of traditional seismic technology. Ordinary supports are prone to buckling under pressure, resulting in a sharp drop in stiffness and bearing capacity, poor hysteresis performance, and difficulty in effectively dissipating earthquake energy. Although traditional buckling-restrained supports can avoid buckling and achieve stable energy consumption, they have problems such as large residual deformation after earthquake and difficulty in resetting. Moreover, the self-righting system relies on prestressed high-elastic materials, and has defects such as poor ductility and stress relaxation. Long-term use affects the resetting effect. In addition, the use of expensive materials such as steel strands leads to high costs. Therefore, there is an urgent need to develop a new support system that has both efficient energy consumption and self-righting capabilities, reduces residual deformation, has low production costs and is adaptable to different scenarios, so as to meet the higher requirements of modern buildings for post-earthquake recoverability.

[0003] In actual use, the existing device mainly relies on the plastic deformation of the core material itself to dissipate seismic energy. The energy dissipation method is relatively simple. When the seismic action is more complex or the intensity is greater, the energy dissipation by the plastic deformation of the core material alone may not be able to fully meet the energy dissipation requirements of the structure. Therefore, a self-resetting buckling restrained support is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the existing technology, in which the support mainly relies on the plastic deformation of the core material itself to dissipate seismic energy, and the energy dissipation method is relatively simple. When the seismic action is more complex or the intensity is greater, the energy dissipation relying solely on the plastic deformation of the core material may not fully meet the energy dissipation requirements of the structure. A self-resetting buckling restrained support is proposed.

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

[0006] The gear train is connected to the gear of the driven gear and the gear is connected to the gear of the driven gear, and the gear is connected to the gear of the driven gear by the spring, and the gear is connected to the gear of the driven gear by the spring.

[0007] A friction plate is provided inside the constraint shell, and the friction plate is in contact with the surface of the core material. When an earthquake occurs, the core material moves inside the constraint shell, thereby generating friction energy consumption with the surface of the friction plate, which complements the plastic deformation energy consumption of the core material itself. The servo motor is started to drive the worm to rotate, and the rotation of the worm drives the transmission rack to move downward. The downward movement of the transmission rack drives the mounting platform to apply pressure to the friction plate, thereby adjusting the pressure of the friction plate on the core material surface, and then adjusting the friction force. Moreover, as the mounting platform moves, the first gear rotates synchronously, and the rotation of the first gear drives the connecting rods provided on both sides of the fixed shell to move, thereby driving the fixed plate to close inward. As the friction force of the friction plate increases, the clamping force on both sides thereof is synchronously increased to ensure the stability of the friction plate. The surface of the core material is covered with a non-adhesive material, and the interior of the constraint shell is filled with concrete.

[0008] The above technical solution further includes:

[0009] The rotating shaft is fixedly connected to a fourth gear on a side away from the second gear, the fourth gear is meshedly connected to the fifth gear, and threaded rods are fixedly connected to both sides of the fifth gear, and the threaded rods are threadedly connected to the connecting rods.

[0010] One side of the fixed shell is fixedly connected to a limit rod, and both sides of the limit rod are slidably connected to connecting rods.

[0011] Both sides of the core material are fixedly connected with a damping reset mechanism, and one end of the damping reset mechanism away from the core material is fixedly connected with a cross-shaped steel.

[0012] The damping reset mechanism includes a damping reset shell fixedly connected to one side of the core material, an oil chamber is provided inside the damping reset shell, a piston is slidably connected inside the oil chamber, a connecting plate is fixedly connected to one side of the piston, the connecting plate is fixedly connected to the cross steel, and the oil chamber is filled with damping medium.

[0013] A plurality of damping holes are provided on the upper portion of the piston, a return spring is fixedly connected to the side of the piston away from the connecting plate, and sealing plates are provided on both sides of the oil chamber.

[0014] The end of the connecting plate away from the damping reset shell is fixedly connected to a cross-shaped steel, the cross-shaped steel is fixedly connected to the constraint shell, and the side of the cross-shaped steel away from the connecting plate is fixedly connected to a connecting head.

[0015] A pin is provided on the upper portion of the connecting head. The connecting head is rotatably connected to the mounting plate through the pin. A mounting hole is provided on the upper portion of the mounting plate.

[0016] A mounting flange is fixedly connected to one side of the mounting plate.

[0017] The present invention has the following beneficial effects:

[0018] 1. In the present invention, two friction plates are provided inside the constraint shell, and the friction plates are in contact with the surface of the core material. During an earthquake, the core material moves inside the constraint shell, thereby generating friction energy consumption with the surface of the friction plates. The friction of the friction plates and the plastic deformation energy consumption of the core material themselves complement each other, effectively improving the energy consumption and shock absorption effect of the device. In addition, by starting the servo motor, the transmission rack can be driven to move downward, and the downward movement of the transmission rack drives the mounting platform to apply pressure to the friction plates, thereby adjusting the pressure of the friction plates on the surface of the core material, so that the friction force of the friction plates changes. In addition, as the mounting platform moves, the first gear can rotate synchronously, and the rotation of the first gear drives the connecting rods provided on both sides of the fixed shell to move, thereby driving the fixed plates to close inward. As the friction force of the friction plates increases, the clamping forces on both sides thereof are synchronously increased, thereby ensuring the stability of the friction plates.

[0019] 2. In the present invention, damping reset structures are provided on both sides of the core material. When an earthquake occurs, the connecting plate can drive the piston to slide inside the oil chamber. During the sliding process, the damping medium inside the oil chamber can generate throttling resistance through the damping hole, thereby consuming energy. At the same time, the movement of the piston can drive the reset spring to undergo elastic deformation. The elastic potential energy accumulated inside the reset spring can reset the device after yielding and compressing deformation in the face of a large earthquake. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a self-resetting buckling restrained support proposed in the present invention;

[0021] Figure 2 Schematic diagram of the connection relationship of the constraint shell in the present invention;

[0022] Figure 3 Schematic diagram of the internal structure of the constraint shell in the present invention;

[0023] Figure 4 Schematic diagram of the internal structure of the damping reset housing in the present invention;

[0024] Figure 5 Schematic diagram of the internal structure of the friction housing in the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the pressure regulating housing in the present invention;

[0026] Figure 7 It is a schematic diagram of the internal structure of the fixed shell in the present invention.

[0027] In the figure: 1. Constraint housing; 2. Mounting plate; 3. Mounting flange; 4. Pressure regulating housing; 5. Friction housing; 6. Mounting hole; 7. Pin; 8. Connector; 9. Cross steel; 10. Core material; 11. Damping reset housing; 12. Connecting plate; 13. Piston; 14. Damping hole; 15. Reset spring; 16. Oil chamber; 17. Sealing plate; 18. Friction plate; 19. Mounting table; 20. Fixed plate; 21. Fixed housing; 22. Connecting rod; 23. First gear; 24. Second gear; 25. Rotating shaft; 26. Servo motor; 27. Worm; 28. Worm wheel; 29. Third gear; 30. Transmission rack; 31. Fourth gear; 32. Fifth gear; 33. Threaded rod; 34. Limit rod. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figure 1-Figure 7 As shown, a self-resetting flexure restraint support includes a restraint shell 1, a core material 10 is provided inside the restraint shell 1, friction shells 5 are fixedly connected on both sides of the restraint shell 1, a pressure regulating shell 4 is fixedly connected to the upper part of the friction shell 5, a servo motor 26 is provided inside the pressure regulating shell 4, a worm 27 is provided at the output end of the servo motor 26, the worm 27 is meshedly connected to the worm gear 28, the worm gear 28 is fixedly connected to the third gear 29, the third gear 29 is meshedly connected to the transmission rack 30, the lower part of the transmission rack 30 is fixedly connected to the fixed shell 21, the lower part of the fixed shell 21 is fixedly connected to the mounting platform 19, the lower part of the mounting platform 19 is fixedly connected to the friction plate 18, one side of the fixed shell 21 is rotatably connected to the rotating shaft 25, the rotating shaft 25 is rotatably connected to the second gear 24, the second gear 24 is meshedly connected to the first gear 23, connecting rods 22 are provided on both sides of the fixed shell 21, the connecting rod 22 is fixedly connected to the fixed plate 20, and the fixed plate 20 and the mounting platform 19 are slidably connected.

[0031] A friction plate 18 is provided inside the constraint shell 1, and the friction plate 18 is in contact with the surface of the core material 10. When an earthquake occurs, the core material 10 moves inside the constraint shell 1, thereby generating friction energy consumption with the surface of the friction plate 18, which complements the plastic deformation energy consumption of the core material 10 itself. In addition, by starting the servo motor 26, the worm 27 is driven to rotate, and the rotation of the worm 27 drives the transmission rack 30 to move downward. The downward movement of the transmission rack 30 drives the mounting platform 19 to apply pressure to the friction plate 18, thereby adjusting the surface pressure of the friction plate 18 on the core material 10, and then adjusting the friction force. In addition, as the mounting platform 19 moves, the first gear 23 rotates synchronously, and the rotation of the first gear 23 drives the connecting rod 22 set on both sides of the fixed shell 21 to move, thereby driving the fixed plate 20 to close inward. As the friction force of the friction plate 18 increases, the clamping force on both sides thereof is synchronously increased to ensure the stability of the friction plate 18. The surface of the core material 10 is covered with a non-adhesive material, and the interior of the constraint shell 1 is filled with concrete.

[0032] The rotating shaft 25 is fixedly connected to the fourth gear 31 on the side away from the second gear 24, and the fourth gear 31 is meshed with the fifth gear 32. The fifth gear 32 is fixedly connected to threaded rods 33 on both sides, and the threaded rods 33 are threadedly connected to the connecting rod 22. The fixed shell 21 is fixedly connected to a limiting rod 34 on one side, and the limiting rod 34 is slidably connected to the connecting rod 22 on both sides.

[0033] In this embodiment, two friction plates 18 are provided inside the constraint shell 1. The friction plates 18 are in contact with the surface of the core material 10. During an earthquake, the core material 10 moves inside the constraint shell 1, thereby generating friction energy consumption with the surface of the friction plates 18. The friction of the friction plates 18 and the plastic deformation energy consumption of the core material 10 themselves complement each other, effectively improving the energy consumption and shock absorption effect of the device. In addition, by starting the servo motor 26, the worm 27 can be driven to rotate. The rotation of the worm 27 drives the worm wheel 28 to rotate, and the rotation of the worm wheel 28 drives the fixedly connected third gear 29 to rotate. The rotation of the third gear 29 drives the meshing transmission rack 30 to move downward. The downward movement of the transmission rack 30 can drive the mounting platform 19 to apply pressure to the friction plate 18, thereby adjusting the surface pressure of the friction plate 18 on the core material 10, so that the friction force of the friction plate 18 changes.

[0034] When the mounting platform 19 moves, the first gear 23 rotatably connected to the upper portion can rotate under the friction of the inner wall of the friction shell 5. The rotation of the first gear 23 can drive the meshingly connected second gear 24 to rotate. The rotation of the second gear 24 can drive the fixedly connected rotating shaft 25 to rotate. The rotation of the rotating shaft 25 can drive the fixedly connected fourth gear 31 to rotate. The rotation of the fourth gear 31 drives the meshingly connected fifth gear 32 to rotate. The rotation of the fifth gear 32 can drive the threaded rods 33 fixedly connected on both sides to rotate. The rotation of the threaded rod 33 can drive the threaded connecting rod 22 to move, and then drive the fixed plate 20 to close inward. During the movement of the connecting rod 22, the slidingly connected limit rod 34 can ensure the stability of the connecting rod 22 during movement. As the friction force of the friction plate 18 increases, the clamping force of the core materials 10 on both sides is synchronously increased, effectively ensuring the stability of the friction plate 18.

[0035] Example 2

[0036] like Figure 1-Figure 7 As shown, damping reset mechanisms are fixedly connected to both sides of the core material 10, and the damping reset mechanism is fixedly connected to a cross-shaped steel 9 at one end away from the core material 10. The damping reset mechanism includes a damping reset shell 11 fixedly connected to one side of the core material 10, and an oil chamber 16 is provided inside the damping reset shell 11. A piston 13 is slidably connected inside the oil chamber 16, and a connecting plate 12 is fixedly connected to one side of the piston 13. The connecting plate 12 is fixedly connected to the cross-shaped steel 9, and the oil chamber 16 is filled with a damping medium.

[0037] A number of damping holes 14 are provided on the upper part of the piston 13, and a return spring 15 is fixedly connected to the side of the piston 13 away from the connecting plate 12. Sealing plates 17 are provided on both sides of the oil chamber 16. The connecting plate 12 is fixedly connected to the end of the damping reset housing 11 away from the cross-shaped steel 9, and the cross-shaped steel 9 is fixedly connected to the constraint housing 1. The cross-shaped steel 9 is fixedly connected to the side of the cross-shaped steel 9 away from the connecting plate 12. A connecting head 8 is fixedly connected to the upper part of the connecting head 8, and the connecting head 8 is rotatably connected to the mounting plate 2 through the pin shaft 7. A mounting hole 6 is provided on the upper part of the mounting plate 2, and a mounting flange 3 is fixedly connected to one side of the mounting plate 2.

[0038] In this embodiment, damping reset structures are provided on both sides of the core material 10. When an earthquake occurs, the connecting plate 12 can drive the piston 13 to slide inside the oil chamber 16. During the sliding process of the piston 13, the damping medium inside the oil chamber 16 can pass through the damping hole 14 provided on the upper part of the piston 13. When the damping medium passes through the damping hole 14, throttling resistance will be generated, thereby consuming the earthquake energy. At the same time, the movement of the piston 13 can also drive the reset spring 15 to undergo elastic deformation. The elastic potential energy accumulated inside the reset spring 15 can reset the device after yielding and compressing in the face of a large earthquake.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A self-resetting buckling restraint support, comprising a restraint shell (1), characterized in that: A core material (10) is provided inside the constraint housing (1), friction housings (5) are fixedly connected to both sides of the constraint housing (1), a pressure regulating housing (4) is fixedly connected to the upper portion of the friction housing (5), a servo motor (26) is provided inside the pressure regulating housing (4), a worm (27) is provided at the output end of the servo motor (26), the worm (27) is meshedly connected to a worm wheel (28), the worm wheel (28) is fixedly connected to a third gear (29), the third gear (29) is meshedly connected to a transmission rack (30), the lower portion of the transmission rack (30) is fixedly A mounting platform (19) is connected, a friction plate (18) is fixedly connected to the lower portion of the mounting platform (19), a fixed housing (21) is fixedly connected to the lower portion of the mounting platform (19), a rotating shaft (25) is rotatably connected to one side of the fixed housing (21), the rotating shaft (25) is rotatably connected to a second gear (24), the second gear (24) is meshedly connected to a first gear (23), connecting rods (22) are provided on both sides of the fixed housing (21), the connecting rods (22) are fixedly connected to a fixed plate (20), and the fixed plate (20) is slidably connected to the mounting platform (19); A friction plate (18) is provided inside the constraint shell (1), and the friction plate (18) contacts the surface of the core material (10). When an earthquake occurs, the core material (10) moves inside the constraint shell (1), thereby generating friction energy consumption with the surface of the friction plate (18), which is complementary to the plastic deformation energy consumption of the core material (10) itself. In addition, the servo motor (26) is started to drive the worm (27) to rotate, and the rotation of the worm (27) drives the transmission rack (30) to move downward, and the downward movement of the transmission rack (30) drives the mounting platform (19) applies pressure to the friction plate (18), thereby adjusting the surface pressure of the friction plate (18) on the core material (10), and further adjusting the friction force. Moreover, as the mounting platform (19) moves, the first gear (23) rotates synchronously, and the rotation of the first gear (23) drives the connecting rods (22) provided on both sides of the fixed shell (21) to move, thereby driving the fixed plate (20) to close inward. As the friction force of the friction plate (18) increases, the clamping force on both sides thereof increases synchronously, thereby ensuring the stability of the friction plate (18).

2. A self-resetting buckling restrained brace according to claim 1, characterized in that: A fourth gear (31) is fixedly connected to the rotating shaft (25) on a side away from the second gear (24); the fourth gear (31) is meshedly connected to a fifth gear (32); threaded rods (33) are fixedly connected to both sides of the fifth gear (32); and the threaded rods (33) are threadedly connected to the connecting rod (22).

3. The self-resetting buckling restrained brace according to claim 1, characterized in that: One side of the fixed housing (21) is fixedly connected to a limiting rod (34), and both sides of the limiting rod (34) are slidably connected to connecting rods (22).

4. The self-resetting buckling restrained brace according to claim 1, characterized in that: Damping reset mechanisms are fixedly connected to both sides of the core material (10), and a cross-shaped steel (9) is fixedly connected to one end of the damping reset mechanism away from the core material (10).

5. A self-resetting buckling restrained brace according to claim 4, characterized in that: The damping reset mechanism comprises a damping reset housing (11) fixedly connected to one side of a core material (10); an oil chamber (16) is provided inside the damping reset housing (11); a piston (13) is slidably connected inside the oil chamber (16); a connecting plate (12) is fixedly connected to one side of the piston (13); and the connecting plate (12) is fixedly connected to a cross-shaped steel (9).

6. The self-resetting buckling restrained brace according to claim 5, characterized in that: A plurality of damping holes (14) are provided on the upper portion of the piston (13). A return spring (15) is fixedly connected to the side of the piston (13) away from the connecting plate (12). Sealing plates (17) are provided on both sides of the oil chamber (16).

7. The self-resetting buckling restrained brace according to claim 5, characterized in that: The end of the connecting plate (12) away from the damping reset housing (11) is fixedly connected to a cross-shaped steel (9), the cross-shaped steel (9) is fixedly connected to the constraint housing (1), and the side of the cross-shaped steel (9) away from the connecting plate (12) is fixedly connected to a connector (8).

8. The self-resetting buckling restrained brace according to claim 7, characterized in that: A pin shaft (7) is provided on the upper portion of the connecting head (8), and the connecting head (8) is rotatably connected to the mounting plate (2) via the pin shaft (7), and a mounting hole (6) is provided on the upper portion of the mounting plate (2).

9. The self-resetting buckling restrained brace according to claim 8, characterized in that: A mounting flange (3) is fixedly connected to one side of the mounting plate (2).

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