Horizontally movable pendulum-type eddy current tuned mass vibration reduction device

Abstract

The present invention belongs to the technical field of vibration reduction and earthquake resistance of civil engineering structures, and specifically relates to a horizontally movable pendulum eddy current tuned mass vibration reduction device, which includes a swing suspension element, a tuning mass, a permanent magnet, a permanent magnet connecting frame, a conductor plate and a magnetic conductive plate, wherein the tuning mass is suspended on the swing suspension element, the permanent magnet is fixed on the permanent magnet connecting frame, the magnetic conductive plate is stacked on the conductor plate, the conductor plate is located between the tuning mass and the permanent magnet and a gap is left between the permanent magnet, and a permanent magnet and conductor plate spacing maintaining device is provided between the tuning mass and the magnetic conductive plate. The horizontally movable pendulum eddy current tuned mass vibration reduction device of the present invention has the advantages of simple structure, convenient adjustment, low manufacturing cost, more stable system damping ratio, better vibration reduction effect, etc., and has a higher cost performance ratio, can be widely used in wind vibration and earthquake response control projects of various skyscrapers, and has a very broad market application prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration reduction and earthquake resistance of civil engineering structures, and in particular relates to a horizontally movable pendulum-type eddy current tuned mass vibration reduction device. Background Art

[0002] In recent decades, with the rapid development of urbanization, there are more and more skyscrapers in cities, and the wind-resistant and earthquake-resistant technologies of skyscrapers have also developed rapidly. Among them, tuned mass dampers (TMDs) are widely used in wind-resistant and earthquake-resistant control of skyscrapers.

[0003] Since the total mass of skyscrapers is extremely large and the natural frequency is low, the required TMD mass is generally in the hundreds of tons level, and the cost of using steel springs is high. Therefore, the TMDs of current skyscrapers basically adopt a pendulum structure, such as Taiwan 101 Building and Hangzhou Bay Bridge Observation Tower. The traditional pendulum TMD suspends the mass block on the structural member at the top of the skyscraper with a certain cable length, and then uses a liquid damper to provide damping. Since skyscrapers vibrate frequently under the action of wind, the pendulum TMD also works very frequently, which places high requirements on the reliability and service life of the liquid damper, and the maintenance and replacement costs are also very high.

[0004] In order to solve the above problems, in recent years, the pendulum TMD technology using eddy current devices to provide damping has been widely used. For example, the invention patent with patent number 201610870649.8 records a new type of pendulum eddy current damping tuned mass damper. This type of technical solution has been unanimously recognized by the industry due to its advantages of long service life, convenient damping adjustment, extremely small structural friction, high sensitivity, and basically maintenance-free. However, it is found in practice that when the pendulum TMD is working, the motion trajectory of the mass block and the permanent magnet is on a curved surface, and the curved surface changes with the change of the cable length. In order to ensure the stability of the performance parameters of the system, the copper plate and the magnetic conductive plate must also be processed into a curved surface that can be adjusted at any time so as to correspond to the motion curved surface of the mass block and the permanent magnet. This not only greatly increases the difficulty of product processing and manufacturing, but also inevitably increases the complexity of the system structure. For example, the invention patent with patent number 201310080464.3 discloses a pendulum eddy current tuned mass damper device, which sets a connecting rod structure inside the copper plate and the magnetic conductive plate adjustment frame. By adjusting The whole connecting rod structure synchronously adjusts the angle and height of the permanent magnet, copper plate and magnetic conductive plate to adapt to the change of the swing radius. This type of adjustment structure and adjustment method is complex in structure and troublesome to operate. After adjustment, the spatial position between the moving surfaces of the mass block and the permanent magnet and the matching surfaces of the copper plate and the magnetic conductive plate will inevitably move relative to each other. During the swinging process, the distance between the two surfaces is always changing. Therefore, the size of the eddy current damping generated in the copper plate is very unstable, and the swinging amplitude of the mass block and the permanent magnet is limited, otherwise it is easy to interfere with the copper plate, which not only affects the overall vibration reduction performance of the pendulum eddy current TMD, but also greatly increases the manufacturing cost. Summary of the invention

[0005] The object of the present invention is to solve the above problems and to provide a horizontally movable pendulum eddy current tuned mass vibration reduction device with simple structure, convenient adjustment, low manufacturing cost, more stable system damping ratio and better vibration reduction effect.

[0006] The horizontal movable pendulum eddy current tuned mass vibration reduction device of the present invention is realized as follows, including a swing suspension element, a tuning mass, a permanent magnet, a permanent magnet connecting frame, a conductor plate and a magnetic conductive plate, wherein the tuning mass is suspended on the swing suspension element, the permanent magnet is fixed on the permanent magnet connecting frame, the magnetic conductive plate is stacked on the conductor plate, the conductor plate is located between the tuning mass and the permanent magnet and a gap is left between the permanent magnet and the conductor plate, and a device for maintaining the distance between the permanent magnet and the conductor plate is provided between the tuning mass and the magnetic conductive plate, and the device for maintaining the distance between the permanent magnet and the conductor plate enables the conductor plate and the permanent magnet to always maintain relative horizontal movement during operation and the vertical distance between the two always remains unchanged. The horizontal movable pendulum eddy current tuned mass vibration reduction device of the present invention may also include a bracket, and the tuning mass is suspended on the bracket through the swing suspension element.

[0007] Wherein, the device for maintaining the distance between the permanent magnet and the conductor plate includes a horizontal synchronization mechanism and a vertical spacing mechanism.

[0008] The function of the horizontal synchronization mechanism is to adjust the vertical spatial position of the conductor plate at any time so that the permanent magnet and the conductor plate always maintain relative horizontal movement during the working process. Its specific structural form can be varied. For example, the horizontal synchronization mechanism includes a joint bearing, a connecting support and a guide column. The guide column is connected to the joint bearing. The joint bearing is fixedly set on the tuning mass or the magnetic conductive plate through the connecting support, and the guide column is correspondingly set on the magnetic conductive plate or the tuning mass.

[0009] The function of the vertical spacing mechanism is to keep the vertical spacing between the permanent magnet and the conductor plate unchanged during operation. Its specific structural form can also be varied. For example, (1) the vertical spacing mechanism includes a universal ball bearing or a universal wheel. The universal ball bearing is fixedly connected to the permanent magnet connecting frame. The universal ball in the universal ball bearing contacts the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the surface of the universal ball; or the universal wheel is fixedly connected to the permanent magnet connecting frame. The roller in the universal wheel contacts the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the surface of the roller. (2) The universal ball bearing can also be fixedly connected to the conductor plate or the magnetic plate, the universal ball in the universal ball bearing contacts the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame; or the universal wheel is fixedly connected to the conductor plate or the magnetic plate, the roller in the universal wheel contacts the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame, which can also achieve good technical effects. (3) The vertical spacing mechanism includes a support platform and a universal ball bearing, or a support platform and a universal wheel, wherein the support platform is fixedly arranged on an external fixed structure or a bracket, the universal ball bearing is fixedly connected to a conductor plate or a magnetic plate, and the universal ball in the universal ball bearing contacts the upper surface of the support platform and can roll on the surface of the support platform; or the universal wheel is fixedly connected to a conductor plate or a magnetic plate, and the roller in the universal wheel contacts the upper surface of the support platform and can roll on the surface of the support platform. (4) The vertical spacing mechanism includes a height adjustment base and a universal ball bearing, or a height adjustment base and a universal wheel, wherein the height adjustment base is fixed on an external fixed structure or a bracket, the universal ball bearing is fixed on the height adjustment base, the universal ball in the universal ball bearing contacts the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the top surface of the universal ball; or the universal wheel is fixed on the height adjustment base, and the roller in the universal wheel contacts the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the top surface of the roller.

[0010] The horizontal movable pendulum-type eddy current tuned mass vibration reduction device of the present invention may also include a frequency regulating device, and the specific structure of the frequency regulating device may be various, for example, the frequency regulating device is a frequency regulating spring; or, the frequency regulating device is a working pendulum length regulator of the swing suspension element. When the frequency regulating device is a frequency regulating spring, the frequency regulating spring is arranged between the tuning mass and the bracket, or between the bracket and the magnetic plate or conductor plate, or between the tuning mass and the external fixed structure, or between the external fixed structure and the magnetic plate or conductor plate; in addition, a fixed connection bracket may also be arranged on the external fixed structure or bracket, and the frequency regulating spring is arranged between the tuning mass and the fixed connection bracket, or between the magnetic plate or conductor plate and the fixed connection bracket.

[0011] The horizontal movable pendulum eddy current tuned mass vibration reduction device of the present invention may also include a safety limit device, which is correspondingly arranged at the periphery of the tuned mass. For example, the safety limit device includes a limit stopper or a combined limiter composed of a limit stopper and a limit damper.

[0012] In order to ensure that the gap size between the permanent magnet and the conductor plate is always consistent, an auxiliary contact mechanism can be added to the permanent magnet and conductor plate spacing maintaining device of the horizontally movable pendulum eddy current tuned mass vibration reduction device of the present invention. The auxiliary contact mechanism is arranged between the tuning mass and the magnetic conductive plate, and the auxiliary contact mechanism includes a pre-compression spring.

[0013] It should be noted that the swing suspension element described in the present invention includes specific structural forms such as slings, chains or slings; in addition, the material of the conductor plate is aluminum, copper, aluminum alloy or copper alloy, etc.; the magnetic conductive plate is preferably made of steel and other materials.

[0014] The horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention converts the curved swing of the conductor plate following the tuning mass into translational motion during operation by setting a device for maintaining the distance between the permanent magnet and the conductor plate, so that the conductor plate and the permanent magnet maintain relative horizontal movement during operation and the vertical distance between the two remains unchanged. Compared with the prior art, the invention has the following advantages: (1) during operation, the permanent magnet and the conductor plate are in relative translational motion, and the gap size between the permanent magnet and the conductor plate remains unchanged. No matter how large the swing amplitude of the tuning mass and the conductor plate is, there will never be interference between the tuning mass, the conductor plate and the permanent magnet. The invention has good safety and the damping ratio of the system is very stable, which is beneficial to greatly improve the vibration reduction performance of the product. (2) the damping ratio adjustment of the system is more accurate and convenient. It only needs to directly adjust the gap size between the permanent magnet and the conductor plate. The adjustment accuracy is easy to ensure and no other synchronous adjustment mechanism is required. The system structure is simpler and the operation is easier, which is beneficial to reduce manufacturing costs and improve operating efficiency. (3) the conductor plate and the permanent magnet maintain relative horizontal movement during operation. Therefore, the conductor plate and the permanent magnet do not need to be matched by processing curved surfaces as in the traditional technology. The cost and difficulty of processing and manufacturing the horizontal movable pendulum eddy current tuned mass vibration reduction device of the invention are greatly reduced, and the economy is better and the cost performance is higher.

[0015] In summary, the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention has the advantages of simple structure, convenient adjustment, low manufacturing cost, more stable system damping ratio, better vibration reduction effect, etc. It has a higher cost performance and can be widely used in wind vibration and earthquake response control projects of various skyscrapers. The market application prospect is very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention.

[0017] Figure 2 for Figure 1 Left view of .

[0018] Figure 3 This is the second structural schematic diagram of the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention.

[0019] Figure 4 This is the third structural schematic diagram of the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention.

[0020] Figure 5 This is the fourth structural schematic diagram of the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention.

[0021] Figure 6 This is the fifth structural schematic diagram of the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention.

[0022] Figure 7 This is the sixth structural schematic diagram of the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention.

[0023] Figure 8 This is the seventh structural schematic diagram of the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention.

[0024] Fig. 9 This is the eighth structural schematic diagram of the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention. DETAILED DESCRIPTION

[0025] Embodiment 1

[0026] like Figure 1 and Figure 2 The horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention comprises a swing suspension element 2, a tuned mass 3, a permanent magnet 5, a permanent magnet connecting frame 4, a conductor plate 6 and a magnetic conductive plate 7, wherein the tuned mass 3 is suspended on the swing suspension element 2 and is suspended on an upper external fixed structure 13 through the swing suspension element 2, the permanent magnet 5 is fixed on the permanent magnet connecting frame 4 and the two are fixed together on the lower external fixed structure 13, wherein the magnetic conductive plate 7 is superimposed on the conductor plate 6, the conductor plate 6 is located between the tuned mass 3 and the permanent magnet 5 and a gap is left between the permanent magnet 5, and a permanent magnet and conductor plate spacing maintaining device is provided between the tuned mass 3 and the magnetic conductive plate 7. The permanent magnet and conductor plate spacing maintaining device enables the conductor plate and the permanent magnet to always maintain relative horizontal movement during operation and the vertical spacing between the two remains unchanged, and the permanent magnet and conductor plate spacing maintaining device comprises a horizontal synchronization mechanism and a vertical spacing mechanism. Among them, the horizontal synchronization mechanism includes a joint bearing 9, a connecting support 19 and a guide column 8, the guide column 8 is connected to the joint bearing 9, the joint bearing 9 is fixedly set on the magnetic plate 7 through the connecting support 19, and the guide column 8 is correspondingly fixedly set on the tuning mass 3. The vertical spatial position of the conductor plate 6 can be adjusted at any time through the horizontal synchronization mechanism, so that the conductor plate 6 and the permanent magnet 5 always maintain relative horizontal movement during the working process; the vertical spacing mechanism includes a universal ball bearing 10, the universal ball bearing 10 is fixedly connected to the permanent magnet connecting frame 4, the universal ball in the universal ball bearing 10 is in contact with the lower surface of the conductor plate 6 and the corresponding conductor plate 6 can be translated on the surface of the universal ball, and the vertical spacing between the conductor plate 6 and the permanent magnet 5 is always maintained unchanged during the working process through the vertical spacing mechanism.

[0027] When in use, the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention is fixedly installed in a skyscraper or other high-rise building structure. When the skyscraper or other high-rise building structure vibrates due to wind vibration or earthquake, due to inertia, the tuned mass suspended on the swinging suspension element swings in the opposite direction to the building structure. Since there is a phase difference between the movements of the two, the movement of the tuned mass has an hindering effect on the movement of the building structure, which can effectively reduce the vibration amplitude and acceleration of the building structure. In this process, the mechanical energy of the building structure vibration causes the tuning mass to swing through the swinging suspension element, and is converted into the kinetic energy and potential energy of the tuning mass; in the process of the tuning mass swinging, the permanent magnet at the bottom generates electromagnetic induction with the conductor plate, and eddy currents are generated inside the conductor plate, and the eddy currents generate an electromagnetic field with the opposite polarity to the magnetic field of the permanent magnet itself. These two electromagnetic fields with opposite polarities hinder the relative movement between the permanent magnet and the conductor plate, and generate an eddy current damping effect. Under the action of the eddy current damping effect, the kinetic energy and potential energy of the tuning mass during the swing are converted into the heat energy generated by the eddy current in the conductor plate. The heat energy is continuously conducted and dissipated through the air, etc., to achieve eddy current damping energy consumption. Therefore, the swing of the tuning mass is continuously consumed under the action of the eddy current damping effect, and the swing speed and swing amplitude are continuously reduced until it stops completely. Through the above process, the horizontal movable pendulum eddy current tuning mass vibration reduction device of the present invention is used to realize the final conversion of the mechanical energy of the building structure during vibration into the heat energy generated by the eddy current in the conductor plate, thereby achieving the technical effect of vibration reduction energy consumption and protection of the building structure. It should be pointed out that during the operation of the present invention, as the tuning mass 3 swings, the distance between the tuning mass 3 and the permanent magnet 5 changes continuously, and the horizontal synchronization mechanism and the vertical spacing mechanism in the device for maintaining the distance between the permanent magnet and the conductor plate begin to cooperate with each other, wherein the universal ball bearing 10, the conductor plate 6 and the magnetic plate 7 as a whole slide relative to each other vertically through the connecting support 19 and the spherical bearing 9 and the guide column 8, so that the universal ball bearing 10 as the vertical spacing mechanism is always in contact with the lower surface of the conductor plate 6 and the conductor plate 6 can translate on the universal ball top surface of the universal ball bearing, thereby ensuring that the permanent magnet 5 and the guide plate 6 can achieve relative horizontal movement during the entire operation process, but the vertical spacing between the two remains unchanged.

[0028] The horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention converts the curved swing of the conductor plate following the tuning mass into translational motion during operation by setting a device for maintaining the distance between the permanent magnet and the conductor plate, so that the conductor plate and the permanent magnet maintain relative horizontal movement during operation and the vertical distance between the two remains unchanged. Compared with the prior art, the invention has the following advantages: (1) during operation, the permanent magnet and the conductor plate are in relative translational motion, and the gap size between the permanent magnet and the conductor plate remains unchanged. No matter how large the swing amplitude of the tuning mass and the conductor plate is, there will never be interference between the tuning mass, the conductor plate and the permanent magnet. The invention has good safety and the damping ratio of the system is very stable, which is beneficial to greatly improve the vibration reduction performance of the product. (2) the damping ratio adjustment of the system is more accurate and convenient. It only needs to directly adjust the gap size between the permanent magnet and the conductor plate. The adjustment accuracy is easy to ensure and no other synchronous adjustment mechanism is required. The system structure is simpler and the operation is easier, which is beneficial to reduce manufacturing costs and improve operating efficiency. (3) the conductor plate and the permanent magnet maintain relative horizontal movement during operation. Therefore, the conductor plate and the permanent magnet do not need to be matched by processing curved surfaces as in the traditional technology. The cost and difficulty of processing and manufacturing the horizontal movable pendulum eddy current tuned mass vibration reduction device of the invention are greatly reduced, and the economy is better and the cost performance is higher.

[0029] In summary, the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention has the advantages of simple structure, convenient adjustment, low manufacturing cost, more stable system damping ratio, better vibration reduction effect, etc. It has a higher cost performance and can be widely used in wind vibration and earthquake response control projects of various skyscrapers. The market application prospect is very broad.

[0030] It should be pointed out that the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention can adjust the natural frequency of the system by adjusting the length of the swinging suspension element; the damping of the system can be adjusted by adjusting the magnetic field size of the permanent magnet, the thickness of the conductor plate, the thickness of the magnetic conductive plate, the gap between the permanent magnet and the conductor plate, etc.; in addition, the specific form of the tuning mass in the present invention can be varied, for example, it can be composed of steel plates stacked together, or it can be composed of a sand box, a water tank, etc., as long as it can provide a suitable mass, it can be applied to the present invention. In addition, it should be noted that the swing suspension element described in the present invention includes specific structural forms such as slings, chains or slings, the material of the conductor plate can be aluminum, copper, aluminum alloy or copper alloy, and the magnetic conductive plate is preferably made of steel and other materials. These descriptions are also applicable to other embodiments of the present invention, and are explained here together without repeating them later; in addition, in addition to universal ball bearings, the vertical spacing mechanism in the present invention can also adopt universal wheels. When used, the universal wheels are fixedly connected to the permanent magnet connecting frame, and the rollers in the universal wheels are in contact with the upper surface of the conductor plate and can roll on the surface of the conductor plate, which can also achieve good results; Fourth, based on the technical principles of the present invention, the specific number and arrangement of the swing suspension elements, the specific number and arrangement of the permanent magnets, and the specific number and arrangement of the permanent magnet horizontal moving device are not limited to Figure 1 and Figure 2 The number and arrangement shown in the figure can be designed and selected according to the engineering needs in practice, and can also achieve good technical effects. The above descriptions are simple changes based on the technical principles of the present invention, and are explained in words here, all within the protection scope of the present invention.

[0031] Embodiment 2

[0032] like Figure 3 The horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention shown in the figure is different from the first embodiment in that it also includes a bracket 1, the tuned mass 3 is suspended on the top of the bracket 1 through a swinging suspension element, and the permanent magnet 5 and the permanent magnet connecting frame 4 are installed and fixed on the base 11 of the bracket 1.

[0033] In the horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention described in this example, since a bracket 1 is additionally provided, the requirements for the surrounding external fixed structure during installation are greatly reduced, and it is more convenient to use.

[0034] Embodiment 3

[0035] like Figure 4The horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention shown in the figure is different from the second embodiment in that the spherical bearing 9 is fixedly arranged on the tuning mass 3 through the connecting support 19, and the guide column 8 is correspondingly fixedly arranged on the magnetic conductive plate 7; in addition, it also includes a frequency adjustment device, which is specifically a frequency adjustment spring 12, and a fixed connecting bracket 17 is fixedly arranged on the base 11 of the bracket 1, and the frequency adjustment spring 12 is arranged between the magnetic conductive plate 7 and the fixed connecting bracket 17; in addition, the permanent magnet and the conductor plate spacing maintaining device also includes an auxiliary contact mechanism, which is arranged between the tuning mass 3 and the magnetic conductive plate 7, and the auxiliary contact mechanism includes a pre-compression spring 20.

[0036] Compared with the second embodiment, the technical solution described in this embodiment has an additional frequency-modulating spring, so when adjusting the natural frequency of the system, it only needs to use frequency-modulating springs with different stiffness, and there is no need to replace swing suspension elements of different lengths, so the operation is simpler and more convenient. In addition, due to the addition of an auxiliary contact mechanism, during the operation, when the tuning mass swings, under the help of the back pressure of the pre-compression spring 20, the guide column 8 and the spherical bearing 9 are helped to move vertically relative to each other in time to compensate for the vertical height change of the tuning mass, which can ensure that the universal ball bearing 10 always maintains effective contact with the lower surface of the conductor plate 6, and the gap size between the permanent magnet 5 and the conductor plate 6 always remains unchanged, so the damping ratio of the system is very stable, which is beneficial to greatly improve the vibration reduction performance of the product.

[0037] Based on the technical principle of this example, the fixed connection bracket can also be set on the external fixed structure, and the frequency tuning spring can be set between the magnetic conductive plate and the fixed connection bracket to achieve the same technical effect; in addition, in addition to being set between the magnetic conductive plate and the fixed connection bracket, the frequency tuning spring can also be set between the tuning mass and the fixed connection bracket, or between the conductor plate and the bracket, which can also achieve good technical effects. This is only explained in text here, and no additional drawings are provided. It is also within the protection scope required by the present invention.

[0038] Embodiment 4

[0039] like Figure 5 The horizontal movable pendulum type eddy current tuned mass vibration reduction device of the present invention is Figure 4The difference of the technical scheme shown is that the bracket 1 is directly fixed on the external fixed structure 13, the permanent magnet 5 is fixed on the permanent magnet connecting frame 4 and the two are fixed together on the external fixed structure 13 below, the spherical bearing 9 is fixedly set on the magnetic conductive plate 7 through the connecting support 19, and the guide column 8 is correspondingly fixedly set on the tuning mass 3; in addition, it also includes a frequency adjustment device, which is specifically a frequency adjustment spring 12, and the frequency adjustment spring 12 is arranged between the tuning mass 3 and the bracket 1; in addition, it also includes a safety limit device, which is correspondingly arranged on the periphery of the tuning mass 3, and the safety limit device is specifically a plurality of limit stops 14, which are fixedly set on the external fixed structure 13, and the limit stops 14 are also provided with an elastic layer 15 for providing buffering.

[0040] Compared with the third embodiment, in the technical solution described in this example, the frequency-modulating spring is arranged between the tuning mass and the bracket, and there is no need to set up an additional fixed connection bracket, and its structure is simpler. Of course, based on the technical principle of this example, the frequency-modulating spring can also be arranged between the magnetic plate and the bracket; in addition, a safety limit device is added to the technical solution described in this example. When a skyscraper or other high-rise building structure equipped with the present invention vibrates in excess of the design value, the tuning mass will touch the safety limit device after swinging, and the limit block will limit the swing range of the tuning mass, thereby ensuring that there will be no harmful effects on the building structure. Of course, based on the technical principle of this example, for Figure 3 If the safety limit device described in this example is added to the technical solution shown, the limit stop block can also be set on the base of the bracket, which can also achieve good technical effects and are all within the protection scope required by the present invention.

[0041] Embodiment 5

[0042] like Figure 6 The horizontal movable pendulum type eddy current tuned mass vibration reduction device of the present invention shown in the figure is different from the third embodiment in that the safety limit device is a combined limiter composed of a limit block 14 and a limit damper 16, wherein the limit block 14 is an annular steel ring, which is arranged around the tuned mass, and a plurality of limit dampers 16 are arranged, and the two ends of the limit damper 16 are respectively fixedly connected to the limit block 14 and the fixed connection bracket 17, and the fixed connection bracket 17 is fixedly arranged on the external fixed structure 13; in addition, the frequency adjustment device is a working pendulum length adjuster 18 of the swing suspension element, the working pendulum length adjuster 18 is connected to the bracket 1, the swing suspension element is specifically a sling, and the swing suspension element 2 passes through the working pendulum length adjuster 18; in addition, the universal ball in the universal ball bearing 10 as a vertical spacing mechanism contacts the lower surface of the magnetic conductive plate 7 and the corresponding magnetic conductive plate 7 can translate on the top surface of the universal ball.

[0043] In the technical solution described in this example, since a working pendulum length adjuster 18 is provided, the effective working pendulum length of the swing suspension element can be changed by adjusting the position of the working pendulum length adjuster up and down, thereby changing the natural frequency of the system; in addition, based on the technical principle of this example, the swing suspension element can also adopt a suspension chain, which can also achieve a good technical effect; in addition, the safety limit device is a combined limiter composed of a limit block and a limit damper. Since a limit damper is added, it can provide stronger buffering and energy dissipation, so the reliability and safety of protection when the vibration exceeds the design intensity are better; furthermore, since the magnetic conductive plate 7 and the universal ball bearing 10 are used to achieve translation, the size of the conductor plate 6 can be better optimized and controlled, which is beneficial to reduce the use of high-priced metal materials used in the conductor plate 6, thereby reducing manufacturing costs.

[0044] It should be pointed out that, based on the technical principle described in this example, the limit damper in the safety limit device can also be fixedly connected to the limit block at one end and fixedly connected to the bracket at the other end; in addition, Figure 3 In the technical solution shown, if the safety limit device described in this example is adopted, the fixed connection bracket can also be set on the base of the bracket. These are simple changes based on the technical principles of the present invention and are all within the protection scope required by the present invention.

[0045] Embodiment 6

[0046] like Figure 7 The horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention shown in the figure is different from the fifth embodiment in that the vertical spacing mechanism includes a universal ball bearing 10 and a height adjustment base 21, the universal ball bearing 10 is fixed on the height adjustment base 21, the height adjustment base 21 is fixed on the external fixed structure 13, the universal ball in the universal ball bearing 10 is in contact with the lower surface of the magnetic conductive plate 7 and the corresponding magnetic conductive plate 7 can translate on the top surface of the universal ball.

[0047] The advantages of the technical solution described in this example are similar to those of Example 5 and will not be repeated here. It should be pointed out that, since an independent height-adjusting base 21 is provided, the size of the permanent magnet connecting frame 4 can be optimized as needed, which is beneficial to reduce the amount of material used and reduce manufacturing costs; on the other hand, it is more convenient and flexible to adjust the top surface height of the universal ball bearing using an independent height-adjusting base, for example, it can be achieved by replacing height-adjusting bases of different thicknesses, or by adding or removing gaskets, etc.; thirdly, a separate height-adjusting base is provided, and the size of the height-adjusting base is easy to optimize, and its material selection range is also wider, which is beneficial to further reduce costs. Of course, based on the technical principle of this example, the vertical spacing mechanism can also adopt a height-adjusting base and a universal wheel, the universal wheel is fixed on the height-adjusting base, the roller in the universal wheel is in contact with the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the top surface of the roller, which can also achieve similar technical effects; in addition, if the technical solution described in this example adopts the following Figure 3 or Figure 4 The bracket shown, that is, when the bracket includes a base, the height-adjusting base can also be fixedly connected to the base of the bracket, which is also within the protection scope required by the present invention.

[0048] Embodiment 7

[0049] like Figure 8 The horizontal movable pendulum type eddy current tuned mass vibration reduction device of the present invention shown in the figure is different from the fifth embodiment in that the universal ball bearing 10 in the vertical spacing mechanism is installed and connected to the magnetic conductive plate 7, and the universal ball in the universal ball bearing is in contact with the upper surface of the permanent magnet connecting frame 4 and can roll on the surface of the permanent magnet connecting frame 4.

[0050] The advantages of the technical solution described in this example are similar to those of the fifth embodiment, and will not be repeated here. It should be pointed out that, based on the technical principle described in this example, the universal ball bearing can also be fixed on the conductor plate, and the universal ball in the universal ball bearing is in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame, and the same technical effect can be achieved; in addition to the universal ball bearings already mentioned, the vertical spacing mechanism can also use universal wheels, which are fixedly connected to the conductor plate or the magnetic plate by the universal wheels, and the rollers in the universal wheels are in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame, and a good technical effect can also be achieved; of course, based on the technical principle of this example, in the technical solutions described in other embodiments of the present invention, the arrangement of fixing the universal ball bearing on the conductor plate or the magnetic plate can also be adopted, which is only explained in words here, and the above contents are all simple changes based on the technical principle described in this example, and are all within the protection scope required by the present invention.

[0051] Embodiment 8

[0052] like Fig. 9The horizontally movable pendulum-type eddy current tuned mass vibration reduction device of the present invention shown in the figure is different from the seventh embodiment in that the vertical spacing mechanism includes a supporting platform 22 and a universal ball bearing 10, the supporting platform 22 is fixedly connected to the external fixed structure 13, the universal ball bearing 10 is fixedly connected to the magnetic conductive plate 7, and the universal balls in the universal ball bearing 10 are in contact with the upper surface of the supporting platform 22 and can roll on the surface of the supporting platform 22.

[0053] Compared with the seventh embodiment, the technical solution described in this embodiment can bring the following beneficial technical effects due to the addition of a supporting platform: on the one hand, it is more convenient and flexible to adjust the working height of the universal ball bearing using an independent supporting platform, for example, it can be achieved by replacing supporting platforms of different thicknesses, or by adding or removing gaskets, etc.; on the other hand, since a separate supporting platform is provided, it is convenient to optimize the size of the permanent magnet connecting frame as needed, which is beneficial to saving materials and reducing manufacturing costs; furthermore, by providing a separate supporting platform, the size of the supporting platform is easy to optimize, and the range of material selection is also wider, which is beneficial to increasing the service life of the product and further reducing costs.

[0054] Based on the technical principle of this example, the vertical spacing mechanism may also include a supporting platform and a universal wheel, wherein the universal wheel is fixedly connected to the conductor plate or the magnetic plate, and the roller in the universal wheel is in contact with the upper surface of the supporting platform and can roll on the surface of the supporting platform, which can also achieve a good technical effect; in addition, if the technical solution described in this example adopts Figure 3 or Figure 4 The bracket shown, that is, when the bracket includes a base, the supporting platform can also be fixedly connected to the base of the bracket, and a good technical effect can be achieved. It is only explained in words here, and it is all within the protection scope required by the present invention.

[0055] The embodiments of the present invention are mainly for facilitating the understanding of the technical principles of the present invention, and are not limited to the contents recorded in the above embodiments. The technical contents recorded in the above embodiments may also be used crosswise. Based on the technical principles of the present invention, those skilled in the art may recombine the technical solutions described in the above embodiments or simply replace some of the components therein with similar technologies. As long as they are based on the technical principles of the present invention, they are all within the protection scope required by the present invention.

Claims

1. A horizontally movable pendulum-type eddy current tuned mass vibration reduction device, comprising a swing suspension element, a tuned mass, a permanent magnet, a permanent magnet connecting frame, a conductor plate and a magnetic conductive plate, wherein the tuned mass is suspended on the swing suspension element, and the permanent magnet is fixed on the permanent magnet connecting frame, characterized in that: The magnetic conductive plate is stacked on the conductor plate, the conductor plate is located between the tuning mass and the permanent magnet and a gap is left between the permanent magnet and the conductor plate, and a device for maintaining the distance between the permanent magnet and the conductor plate is provided between the tuning mass and the magnetic conductive plate, and the device for maintaining the distance between the permanent magnet and the conductor plate enables the conductor plate and the permanent magnet to always maintain relative horizontal movement during operation and the vertical distance between the two always remains unchanged; The device for maintaining the distance between the permanent magnet and the conductor plate includes a horizontal synchronization mechanism and a vertical spacing mechanism; The horizontal synchronization mechanism includes a joint bearing, a connecting support and a guide column, the guide column is connected with the joint bearing, the joint bearing is fixedly arranged on the tuning mass or the magnetic conductive plate through the connecting support, and the guide column is correspondingly arranged on the magnetic conductive plate or the tuning mass; The vertical spacing mechanism can be set as a universal ball bearing or a universal wheel, the universal ball bearing is fixedly connected to the permanent magnet connecting frame, the universal ball in the universal ball bearing contacts with the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the top surface of the universal ball; or the universal wheel is fixedly connected to the permanent magnet connecting frame, the roller in the universal wheel contacts with the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the top surface of the roller.

2. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 1 is characterized in that: Also included is a bracket from which the tuned mass is suspended by a pendulum suspension element.

3. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 1, characterized in that: The vertical spacing mechanism can also be set as a height adjustment base and a universal ball bearing, or a height adjustment base and a universal wheel, the height adjustment base is fixed on an external fixed structure or bracket, the universal ball bearing is fixed on the height adjustment base, the universal ball in the universal ball bearing is in contact with the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the top surface of the universal ball; or the universal wheel is fixed on the height adjustment base, the roller in the universal wheel is in contact with the lower surface of the conductor plate or the magnetic plate, and the corresponding conductor plate or the magnetic plate can translate on the top surface of the roller.

4. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 1, characterized in that: The vertical spacing mechanism can also be set as a universal ball bearing or a universal wheel, the universal ball bearing is fixedly connected to the conductor plate or the magnetic plate, the universal ball in the universal ball bearing is in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame; or the universal wheel is fixedly connected to the conductor plate or the magnetic plate, the roller in the universal wheel is in contact with the upper surface of the permanent magnet connecting frame and can roll on the surface of the permanent magnet connecting frame.

5. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 1, characterized in that: The vertical spacing mechanism can also be configured as a supporting platform and a universal ball bearing, or a supporting platform and a universal wheel, wherein the supporting platform is fixedly arranged on an external fixed structure or a bracket, the universal ball bearing is fixedly connected to a conductor plate or a magnetic plate, and the universal ball in the universal ball bearing is in contact with the upper surface of the supporting platform and can roll on the surface of the supporting platform; or the universal wheel is fixedly connected to a conductor plate or a magnetic plate, and the roller in the universal wheel is in contact with the upper surface of the supporting platform and can roll on the surface of the supporting platform.

6. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 1 or 2, characterized in that: A frequency adjustment device is also included.

7. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 6, characterized in that: The frequency adjustment device is a frequency adjustment spring.

8. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 7, characterized in that: The frequency tuning spring is arranged between the tuning mass and the bracket, or between the bracket and the magnetic conductive plate, or between the bracket and the conductor plate, or between the tuning mass and the external fixed structure, or between the external fixed structure and the magnetic conductive plate or the conductor plate.

9. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 7, characterized in that: A fixed connection bracket is arranged on the external fixed structure or bracket, and the frequency tuning spring is arranged between the tuning mass and the fixed connection bracket, or between the magnetic conductive plate or the conductor plate and the fixed connection bracket.

10. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 6, characterized in that: The frequency regulating device is a working pendulum length regulator of the swing suspension element.

11. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 1 or 2, characterized in that: It also includes a safety limit device, which is correspondingly arranged on the periphery of the tuning mass.

12. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 11, characterized in that: The safety limit device comprises a limit stopper or a combined limiter consisting of a limit stopper and a limit damper.

13. The horizontally movable pendulum-type eddy current tuned mass vibration reduction device according to claim 1 or 2, characterized in that: The device for maintaining the distance between the permanent magnet and the conductor plate also includes an auxiliary contact mechanism, which is arranged between the tuning mass and the magnetic conductive plate, and includes a pre-compression spring.

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