Dual self-resetting combined damper

Abstract

The present application relates to a kind of double self-resetting combined damping device, including base, support side pole and cylinder are provided on base;Cylinder upper end is connected with transmission frame, the transmission frame includes upper plate, inclined plate and lower plate, the upper plate bottom is welded with screw rod, the screw rod lower end extends into the inside of the cylinder, is connected with the base by metal spring;Metal rod is arranged between the support side pole and the cylinder, the metal rod passes through the lower plate, one end is fixedly connected with the support side pole, and the other end is left with gap between the outer wall of the cylinder;Shape memory alloy spring is sleeved on the metal rod between the support side pole and the lower plate, and the shape memory alloy spring is connected with the electromagnetic induction component;The device is under vertical load action, can be double damping in lateral and vertical, elastic combination magnetism is played simultaneously, while energy consumption, damping spring can be quickly reset, reach the effect of high-efficiency energy dissipation and damping.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, specifically to a dual self-resetting combined vibration reduction device. Technical Background

[0002] With social progress and rapid economic development, rail transit is playing an increasingly important role in public transportation, and more and more high-speed rail and subway tracks are under construction. In order to ensure the stability of train operation and passenger comfort, the requirements for the vibration reduction performance of the tracks are also becoming increasingly stringent, often requiring the installation of vibration damping devices.

[0003] To reduce vibrations in subway tracks, vibration damping measures are typically required. However, current track vibration damping devices have some drawbacks. For example, existing publicly available subway track vibration damping devices generally use damping springs and support plates. The springs slow down the downward movement of the support plates, thus buffering the track. Although this combination structure is simple and can achieve a certain degree of vibration damping, it can only achieve vibration damping, energy dissipation, and self-resetting functions in one direction, and it cannot guarantee the self-resetting performance of the device. Therefore, when the subway or high-speed rail travels at high speeds, it cannot achieve a vibration damping effect in a short time.

[0004] In order to overcome the shortcomings of existing technologies, there is an urgent need for a dual self-resetting combined vibration damping device that can provide dual vibration damping in both the lateral and vertical directions when the track vibrates, and achieve rapid self-resetting of the device in both the lateral and vertical directions, so as to achieve the effect of efficient energy-consuming vibration damping in a short time. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a dual self-resetting combined vibration damping device that can provide dual vibration damping in both the lateral and vertical directions when the track vibrates. At the same time, by utilizing the temperature change characteristics of shape memory alloys and the property of magnetic poles repelling each other, the vibration damping device can quickly reset while consuming energy, thus achieving a highly efficient energy-consuming vibration damping effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dual self-resetting combined vibration damping device includes a base, on which a supporting side rod and a cylinder are mounted. A transmission frame is connected to the upper end of the cylinder. The transmission frame includes an upper plate, an inclined plate, and a lower plate. A screw is welded to the bottom of the upper plate, and the lower end of the screw extends into the cylinder and is connected to the base via a metal spring. A metal rod is positioned between the supporting side rod and the cylinder, passing through the lower plate. One end of the metal rod is fixedly connected to the supporting side rod, and the other end has a gap with the outer wall of the cylinder. A shape memory alloy spring is sleeved on the metal rod between the supporting side rod and the lower plate. One end of the shape memory alloy spring is fixedly connected to the supporting side rod, and the other end is freely connected to the lower plate. The shape memory alloy spring is also connected to an electromagnetic induction component, and the shape memory alloy spring achieves automatic reset through the electromagnetic induction component.

[0008] Preferably, the electromagnetic induction component includes a first magnet and a coil. The first magnet is threaded through a metal rod between the lower plate and the cylinder, with one end fixedly connected to the lower plate. The coil is wound around the metal rod between the first magnet and the cylinder and is connected to both ends of the shape memory alloy spring to form a closed coil.

[0009] Furthermore, the cylinder is characterized in that a top cover is provided at the upper end, the screw passes through the center of the top cover and can move up and down relative to the top cover, a connecting rod is provided on the screw located inside the cylinder, one end of the connecting rod is connected to the screw and the other end is connected to a second magnet, and a third magnet is fixedly provided on the inner wall of the cylinder.

[0010] Furthermore, the base is provided with a guide rail that is adapted to the lower end of the cylinder, and the cylinder can rotate along the guide rail.

[0011] Furthermore, a damper is provided between the lower plate and the cylinder.

[0012] Preferably, the upper plate and the inclined plate, and the inclined plate and the lower plate are all connected by hinges.

[0013] Preferably, the shape memory alloy spring material is one of nickel-titanium alloy, iron-based alloy, or copper-based alloy.

[0014] Compared with existing vibration damping devices, the advantages of this invention are:

[0015] (1) Under vertical load conditions, the shape memory alloy spring and the metal spring undergo elastic deformation and the nonlinear stiffness between the magnet play a role at the same time, absorbing vibration energy in both the lateral and vertical directions, which can achieve the effect of efficient vibration reduction.

[0016] (2) The size, shape, stiffness, and magnetic pole strength of metal springs and shape memory alloy springs can be selected according to the vibration reduction requirements, and are suitable for environments with different vertical loads.

[0017] (3) After the device is put into use, the electromagnetic induction component provides current to the shape memory alloy, and the shape memory alloy automatically resets by utilizing the temperature change characteristics of the shape memory alloy. The metal spring is self-reset by utilizing the repulsive property of like magnetic poles, so that the device has good overall self-reset performance and is suitable for rail transit subjected to vertical loads. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the device of the present invention;

[0019] Figure 2 This is a top view schematic diagram of the second and third magnets of the present invention;

[0020] Reference numerals: 1 base, 2 supporting side rod, 3 cylinder, 31 top cover, 4 transmission frame, 41 upper plate, 42 inclined plate, 43 lower plate, 5 screw, 51 connecting rod, 52 second magnet, 6 metal spring, 7 metal rod, 8 shape memory alloy spring, 9 first magnet, 10 coil, 11 third magnet, 12 damper; Specific Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] refer to Figure 1 and Figure 2A dual self-resetting combined vibration damping device includes a base 1, on which a supporting side rod 2 and a cylinder 3 are provided; a guide rail adapted to the lower end of the cylinder is provided on the base 1, and an upper cover 31 is provided on the upper end of the cylinder 3. The upper cover 31 is connected to a transmission frame 4, which includes an upper plate 41, an inclined plate 42, and a lower plate 43. The upper plate 41 and the inclined plate 42, and the inclined plate 42 and the lower plate 43 are all connected by hinges. A screw 5 is welded to the bottom of the upper plate. The screw 5 passes through the center of the upper cover 31 and extends into the cylinder 3 at its lower end, and is connected to the base 1 by a metal spring 6; a connecting rod 51 is provided on the screw 5 located inside the cylinder 3. One end of the connecting rod 51 is connected to the screw 5, and the other end is connected to a second magnet 52. A third magnet 11 corresponding to the second magnet 52 is fixedly provided on the inner wall of the cylinder 3; A metal rod 7 is provided between the supporting side rod 2 and the cylinder 3. The metal rod 7 passes through the lower plate 43, with one end fixedly connected to the supporting side rod 2 and the other end leaving a small gap with the outer wall of the cylinder 3. A shape memory alloy spring 8 is sleeved on the metal rod 7 between the supporting side rod 2 and the lower plate 43. One end of the shape memory alloy spring 8 is fixedly connected to the supporting side rod 2, and the other end is freely connected to the lower plate 43. The shape memory alloy spring 8 is also connected to the electromagnetic induction assembly. The electromagnetic induction assembly includes a first magnet 9 and a coil 10. The first magnet 9 passes through the metal rod 7 between the lower plate 43 and the cylinder 3, with one end fixedly connected to the lower plate 43. The coil 10 is wound around the metal rod 7 between the first magnet 9 and the cylinder 3 and is connected to both ends of the shape memory alloy spring 8 to form a closed coil. A damper 12 is provided between the lower plate 43 and the cylinder 2.

[0023] In the above embodiments, when there is a vertical load, the external vibration is transmitted through the upper plate of the transmission frame.

[0024] In the horizontal direction, energy is transmitted to the lower plate through the inclined plate. The inclined plate and the lower plate are connected by a hinge, allowing them to rotate relative to each other. The lower plate drives the first magnet to compress the shape memory alloy spring 8 along the metal rod, consuming energy. During the movement, the lower plate also drives the damper to consume energy. During the movement of the first magnet, the magnetic flux in the coil changes, generating current. The current flows through the shape memory alloy spring 8, and the shape memory alloy spring 8 heats up and quickly resets, realizing the reset function.

[0025] Vertical energy is transferred to the metal spring through the screw. The metal spring absorbs the energy of oscillation and impact. A small gap is left between the metal rod 7 and the outer wall of the cylinder 3. As the screw 5 moves downward, it drives the cylinder 3 to rotate along the guide rail. During the rotation of the cylinder 3, the third magnet rotates with the cylinder 3 and moves closer to the second magnet. The polarities of the two adjacent sides of the second magnet and the third magnet are the same. Nonlinear stiffness is generated between the like magnetic poles to dissipate energy. At the same time, due to the imbalance of the repulsive forces on both sides, the cylinder 3 will be caused to rotate in the opposite direction, so that the metal spring can quickly reset.

[0026] The above embodiments utilize the temperature change characteristics of shape memory alloy springs, the induced current generated by the change of magnetic flux in closed circuits, the repulsive property of like magnetic poles, and the energy dissipation of dampers to enable the device to exert high-efficiency vibration reduction capabilities under vertical loads and meet vibration reduction requirements.

[0027] In the above embodiments, the metal spring 6 is cylindrical or conical, and the shape memory alloy spring 8 is made of one of nickel-titanium alloy, iron-based alloy, or copper-based alloy.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A dual self-resetting combined damper device, characterized by, It includes base (1), it is provided with support side pole (2) and cylinder (3) on base (1); The upper end of the cylinder (3) is connected with a transmission frame (4), the transmission frame (4) includes an upper plate (41), an inclined plate (42) and a lower plate (43), the bottom of the upper plate is welded with a screw rod (5), the lower end of the screw rod (5) extends into the inside of the cylinder (3), and the screw rod (5) is connected with the base (1) through a metal spring (6); A metal rod (7) is arranged between the support side pole (2) and the cylinder (3), the metal rod (7) passes through the lower plate (43), one end of the metal rod (7) is fixedly connected with the support side pole (2), and the other end of the metal rod (7) leaves a gap with the outer wall of the cylinder (3); A shape memory alloy spring (8) is sleeved on the metal rod (7) between the support side pole (2) and the lower plate (43), one end of the shape memory alloy spring (8) is fixedly connected with the support side pole (2), the other end of the shape memory alloy spring (8) is freely connected with the lower plate (43), and the shape memory alloy spring (8) is connected with an electromagnetic induction assembly, and the shape memory alloy spring (8) is automatically reset through the electromagnetic induction assembly; The electromagnetic induction assembly includes a first magnet (9) and a coil (10), the first magnet (9) is arranged on the metal rod (7) between the lower plate (43) and the cylinder (3), one end of the first magnet (9) is fixedly connected with the lower plate (43), the coil (10) is arranged on the metal rod (7) between the first magnet (9) and the cylinder (3), and the two ends of the coil (10) are connected with the two ends of the shape memory alloy spring (8) to form a closed coil; An upper cover (31) is arranged on the upper end of the cylinder (3), the screw rod penetrates the center of the upper cover (31), and the screw rod is movable up and down relative to the upper cover (31), a connecting rod (51) is arranged on the screw rod (5) in the cylinder (3), one end of the connecting rod (51) is connected with the screw rod (5), the other end of the connecting rod (51) is connected with a second magnet (52), and a third magnet (11) is fixedly arranged on the inner wall of the cylinder (3); A guide rail matched with the lower end of the cylinder (3) is arranged on the base (1), the cylinder (3) can rotate along the guide rail, a damper (12) is arranged between the lower plate (43) and the cylinder (3), the upper plate (41), the inclined plate (42) and the lower plate (43) are connected through hinges, when vertical load exists, external vibration is transmitted downward through the upper plate (41) of the transmission frame, in the process of downward movement of the screw rod (5), the cylinder (3) rotates along the guide rail, the third magnet (11) rotates with the cylinder (3), and the second magnet (52) is close to the third magnet (11), the polarities of the two sides adjacent to the second magnet (52) and the third magnet (11) are same.

2. A dual self-resetting combined damper device according to claim 1, wherein, The metal spring (6) is in a cylindrical or conical shape.

3. A dual self-resetting combined damper device according to claim 1, wherein, The shape memory alloy spring (8) is made of one of a nickel-titanium-based alloy, an iron-based alloy or a copper-based alloy.

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