Memory alloy metal damper

Abstract

The utility model discloses a memory alloy metal damper, including base, the central position of base top is equipped with lower damping cylinder, the upper end of lower damping cylinder is slidably connected with middle damping cylinder, and the one end away from lower damping cylinder of middle damping cylinder is slid and is installed with upper damping cylinder, and the outer wall on the upper end of upper damping cylinder is fixed with the trapezoidal seat of equal interval, and the top of trapezoidal seat all is equipped with round limit block, and the bottom of round limit block and the top of trapezoidal seat touch, and the central position of round limit block bottom is fixedly installed with guide rod, and the bottom of guide rod extends to the inside of base, and the outer wall on the bottom of guide rod is fixedly installed with limit clamp, and the corner position of base inside all is equipped with positioning hole. The utility model not only guarantees the stability of metal damper when using, also reaches the purpose that easily carries out damping shock attenuation, and reaches the purpose of adjusting metal damper damping strength.

Description

Technical Field

[0001] This utility model relates to the field of structural vibration control technology, specifically to a shape memory alloy metal damper. Background Technology

[0002] As modern buildings become taller, larger in span, and more complex, traditional seismic design concepts face challenges. Traditional seismic systems rely on the structural strength itself to resist seismic forces, which can easily lead to damage or even collapse of the main structure. Since the 20th century, passive control technology based on energy dissipation has become a research hotspot. By setting energy dissipation devices in key parts of the structure, seismic energy can be converted into thermal or mechanical energy, achieving the goal of vibration reduction by using softness to overcome rigidity. Among them, metal dampers have become the mainstream solution for engineering applications due to their advantages such as simple construction, high durability, and no need for external energy.

[0003] A composite shape memory alloy damper, as described in reference announcement number CN211548159U, includes an upper plate, side clamps, a middle fixed plate, friction material, a base, and shape memory alloy cables. This composite shape memory alloy damper utilizes several shape memory alloy cables mounted on the damper. These cables pass laterally through the middle fixed plate and are then fixed to the side clamps on both sides. If sliding occurs between the middle fixed plate and the side clamps, the friction material applies a frictional force, while the shape memory alloy cables apply a reverse elastic force, resulting in a greater output force. Simultaneously, the shape memory alloy cables pull both plates back to their original positions, contributing to the stability or restoration of the building. However, while this metal damper can be effectively applied, it is generally not convenient for limiting the movement of vertically moving parts, making the damper prone to displacement during movement and thus affecting its stability. Further improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a shape memory alloy metal damper to solve the problem mentioned in the background art that although metal dampers can be used well, they are usually not convenient for limiting the movement of the upper and lower moving parts, which makes the metal damper prone to displacement during movement and thus affects the stability of the metal damper.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shape memory alloy metal damper, comprising a base, a lower damping cylinder at the center of the top of the base, a middle damping cylinder slidably connected to the upper end of the lower damping cylinder, an upper damping cylinder slidably mounted at the end of the middle damping cylinder away from the lower damping cylinder, trapezoidal seats at equal intervals fixed on the outer wall of the upper end of the upper damping cylinder, a circular limiting block provided above each trapezoidal seat, the bottom end of the circular limiting block contacting the top end of the trapezoidal seat, a guide rod fixedly mounted at the center of the bottom end of the circular limiting block, the bottom end of the guide rod extending into the interior of the base, a limiting clamp fixedly mounted on the outer wall of the lower end of the guide rod, and positioning holes provided at the corners inside the base.

[0006] Preferably, the upper damping cylinder has an upper mounting seat inside, and the middle damping cylinder has an annular mounting seat inside, so that the positioning plate can be placed in place.

[0007] Preferably, the lower damping cylinder has a lower support seat inside, and a positioning plate is fixed at the center of the annular support seat. The outer wall of the positioning plate is connected to the inner wall of the annular support seat. The positioning plate is used to position the movable cylinder.

[0008] Preferably, both ends of the positioning plate are provided with movable cylinders, and a movable rod is movably installed inside the movable cylinder. One end of the movable rod extends to the outside of the movable cylinder and is provided with a connecting frame. The end of the connecting frame away from the movable rod is connected to the inner wall of the upper part seat and the lower part seat respectively. The movable cylinder is provided so that one end of the movable rod can be movably positioned.

[0009] Preferably, the outer wall of the movable cylinder is provided with an external thread, and a threaded disc is threadedly installed on the outer wall of the movable cylinder at the position of the external thread, so that the threaded disc can be threadedly installed.

[0010] Preferably, a damping spring is installed on the outer side of the movable cylinder and the movable rod. The two ends of the damping spring contact the inner wall of the connecting frame and the threaded disc, respectively. The damping spring is used to form the damping component of the metal damper.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the shape memory alloy metal damper not only ensures the stability of the metal damper during use, but also achieves the purpose of easy damping and shock absorption, and achieves the purpose of adjusting the damping force of the metal damper.

[0012] (1) The guide rod is movably connected to the trapezoidal seat and the base at both ends, and a circular limit block and a limit clamp are fixedly installed at the upper end of the guide rod. When the upper damping cylinder and the lower damping cylinder move slightly at both ends of the middle damping cylinder, the trapezoidal seat and the base slide up and down on the outer wall of the guide rod. The circular limit block and the limit clamp prevent the trapezoidal seat and the base from separating from the outer wall of the guide rod, thereby effectively limiting the movement range of the upper damping cylinder and the lower damping cylinder, thus ensuring the stability of the metal damper during use.

[0013] (2) By movably setting the upper and lower damping cylinders at both ends of the middle damping cylinder, and setting two sets of damping components composed of damping springs on the inner side of the annular mounting base, the upper mounting base and the lower mounting base, the metal damper is formed as a whole, thereby achieving the purpose of easy damping and shock absorption.

[0014] (3) By rotating the threaded disc, the threaded disc slides on the outer wall of the movable cylinder at the external thread position to adjust the distance between the connecting frame and the threaded disc, thereby effectively adjusting the elastic pressure applied by the damping spring to the connecting frame, thus achieving the purpose of adjusting the damping force of the metal damper. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a frontal cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0018] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Base; 2. Positioning hole; 3. Lower damping cylinder; 4. Middle damping cylinder; 5. Upper damping cylinder; 6. Trapezoidal seat; 7. Circular limit block; 8. Guide rod; 9. Limiting clamp; 10. Annular placement seat; 11. Upper placement seat; 12. Lower placement seat; 13. Positioning plate; 14. Movable cylinder; 15. Movable rod; 16. Connecting frame; 17. External thread; 18. Threaded disc; 19. Damping spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-4 An embodiment of this utility model is provided: a shape memory alloy metal damper, including a base 1, a lower damping cylinder 3 is provided at the center of the top of the base 1, a middle damping cylinder 4 is slidably connected to the upper end of the lower damping cylinder 3, an upper damping cylinder 5 is slidably installed at the end of the middle damping cylinder 4 away from the lower damping cylinder 3, an upper mounting seat 11 is provided inside the upper damping cylinder 5, and an annular mounting seat 10 is provided inside the middle damping cylinder 4.

[0022] In use, the positioning plate 13 is placed by setting the annular mounting base 10;

[0023] The lower damping cylinder 3 is provided with a lower component seat 12 inside. A positioning plate 13 is fixed at the center of the annular component seat 10. The outer wall of the positioning plate 13 is connected to the inner wall of the annular component seat 10.

[0024] In use, the positioning plate 13 is used to position the movable cylinder 14.

[0025] Both ends of the positioning plate 13 are provided with movable cylinders 14. Movable rods 15 are movably installed inside the movable cylinders 14. One end of the movable rods 15 extends to the outside of the movable cylinders 14 and is provided with a connecting frame 16. The end of the connecting frame 16 away from the movable rods 15 is connected to the inner walls of the upper part seat 11 and the lower part seat 12 respectively.

[0026] In use, the movable cylinder 14 is provided to allow one end of the movable rod 15 to be moved and positioned.

[0027] The outer wall of the movable cylinder 14 is provided with an external thread 17, and a threaded disc 18 is threadedly installed on the outer wall of the movable cylinder 14 at the position of the external thread 17.

[0028] In use, the external thread 17 is provided to allow the threaded disc 18 to be threaded.

[0029] A damping spring 19 is installed on the outside of the movable cylinder 14 and the movable rod 15. The two ends of the damping spring 19 contact the inner wall of the connecting frame 16 and the threaded disc 18, respectively.

[0030] In use, the damping components of the metal damper are assembled by setting the damping spring 19;

[0031] The upper damping cylinder 5 has trapezoidal seats 6 fixed at equal intervals on its outer wall. Each trapezoidal seat 6 has a circular limiting block 7 above it. The bottom of the circular limiting block 7 touches the top of the trapezoidal seat 6. A guide rod 8 is fixedly installed at the center of the bottom of the circular limiting block 7. The bottom of the guide rod 8 extends into the interior of the base 1. A limiting clamp 9 is fixedly installed on the outer wall of the lower end of the guide rod 8. Positioning holes 2 are provided at the corners inside the base 1.

[0032] In this embodiment, the guide rod 8 is first movably connected to the trapezoidal seat 6 and the base 1 at both ends. A circular limiting block 7 and a limiting clamp 9 are fixedly installed at the upper end of the guide rod 8. When the upper damping cylinder 5 and the lower damping cylinder 3 move slightly at the ends of the middle damping cylinder 4, the trapezoidal seat 6 and the base 1 slide up and down on the outer wall of the guide rod 8. The circular limiting block 7 and the limiting clamp 9 prevent the trapezoidal seat 6 and the base 1 from detaching from the outer wall of the guide rod 8, thus limiting the movement range of the upper damping cylinder 5 and the lower damping cylinder 3. Then, by movably setting the upper damping cylinder 5 and the lower damping cylinder 3... Two sets of damping components composed of damping springs 19 are arranged at both ends of the middle damping cylinder 4 and inside the annular mounting base 10, the upper mounting base 11 and the lower mounting base 12 to form a whole metal damper to realize the damping function of the metal damper. Finally, by rotating the threaded disc 18, the threaded disc 18 slides on the outer wall of the movable cylinder 14 at the position of the external thread 17 to adjust the distance between the connecting frame 16 and the threaded disc 18, thereby effectively adjusting the elastic pressure applied by the damping springs 19 to the connecting frame 16, so as to adjust the damping force of the metal damper as needed, thus completing the use of the metal damper.

Claims

1. A shape memory alloy metal damper, characterized in that: The base includes a base (1), a lower damping cylinder (3) is provided at the center of the top of the base (1), a middle damping cylinder (4) is slidably connected to the upper end of the lower damping cylinder (3), an upper damping cylinder (5) is slidably installed at the end of the middle damping cylinder (4) away from the lower damping cylinder (3), trapezoidal seats (6) with equal spacing are fixed on the outer wall of the upper end of the upper damping cylinder (5), a circular limiting block (7) is provided above each trapezoidal seat (6), the bottom end of the circular limiting block (7) touches the top end of the trapezoidal seat (6), a guide rod (8) is fixedly installed at the center of the bottom end of the circular limiting block (7), the bottom end of the guide rod (8) extends into the interior of the base (1), a limiting clamp (9) is fixedly installed on the outer wall of the lower end of the guide rod (8), and positioning holes (2) are provided at the corners inside the base (1).

2. The shape memory alloy metal damper according to claim 1, characterized in that: The upper damping cylinder (5) is provided with an upper component seat (11) inside, and the middle damping cylinder (4) is provided with an annular component seat (10) inside.

3. A shape memory alloy metal damper according to claim 2, characterized in that: The lower damping cylinder (3) is provided with a lower component seat (12) inside. A positioning plate (13) is fixed at the center of the annular component seat (10). The outer wall of the positioning plate (13) is connected to the inner wall of the annular component seat (10).

4. A shape memory alloy metal damper according to claim 3, characterized in that: Both ends of the positioning plate (13) are provided with movable cylinders (14). A movable rod (15) is movably installed inside the movable cylinder (14). One end of the movable rod (15) extends to the outside of the movable cylinder (14) and is provided with a connecting frame (16). The end of the connecting frame (16) away from the movable rod (15) is connected to the inner wall of the upper part seat (11) and the lower part seat (12) respectively.

5. A shape memory alloy metal damper according to claim 4, characterized in that: The outer wall of the movable cylinder (14) is provided with an external thread (17), and a threaded disc (18) is threadedly installed on the outer wall of the movable cylinder (14) at the position of the external thread (17).

6. A shape memory alloy metal damper according to claim 5, characterized in that: Damping springs (19) are installed on the outer sides of the movable cylinder (14) and the movable rod (15). The two ends of the damping springs (19) are in contact with the inner walls of the connecting frame (16) and the threaded disc (18), respectively.

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