An electronic control device with stepless adjustment of inertia parameters and its operation method

Abstract

This application relates to an electronically controlled device and its operating method for stepless adjustment of inertial mass parameters. The electronically controlled device includes two turntables, each turntable having a junction at its center and multiple equally spaced, ring-shaped branches connected to the junction. Each branch has a linear motion component along its length, and a counterweight component is movably connected to the linear motion component. A motor is fixedly mounted at the junction and synchronously driven by the linear motion component to control the counterweight component to move synchronously away from or towards the motor, thereby changing a second rotational inertia parameter. A speed control box is located between the two turntables, with its output shaft connected to one turntable at each end. The speed control box is used to adjust the rotational speed of the turntables to change a first rotational inertia parameter. This device, in conjunction with a damper, achieves adjustable inertial mass parameters by adjusting the two rotational inertia parameters, solving the problem that dampers only contain damping units and cannot flexibly adjust inertial mass parameters to obtain better wind vibration control performance.

Description

Technical Field

[0001] This application relates to the field of building vibration reduction technology, and in particular to an electronic control device for stepless adjustment of inertial mass parameters and its operation method. Background Technology

[0002] In recent years, with the development of new technologies and the innovation of structural systems, cable-stayed bridges have become an important structural system for ultra-long-span bridges, exhibiting dynamic characteristics characterized by low and dense vibration modes. Under normal wind speed conditions, they are prone to low-order vertical bending vortex-induced vibration and torsional vibration, as seen in bridges such as the Yingwuzhou Yangtze River Bridge, Humen Bridge, and Xihoumen Highway Bridge. Therefore, long-span bridges face two main challenges: first, the measurement and evaluation of the bridge structure's own dynamic characteristics; and second, improving the vibration damping performance of the bridge structure.

[0003] Existing bridge structures typically address wind-induced vibration by optimizing the aerodynamic shape of the main girder cross-section using aerodynamic measures, which are then verified through wind tunnel experiments. However, engineering practice shows that this single aerodynamic measure cannot completely solve bridge structural vibration. Engineers and researchers have also considered installing vertical vortex-induced vibration control dampers between the bridge towers and the main girder. Theoretical and engineering practice results indicate that, due to installation location limitations, conventional viscous dampers, containing only damping elements, can only provide a limited additional damping ratio.

[0004] As a novel mechanical element, inertial mass can significantly improve the vibration reduction performance of vertical dampers at the same installation location. The wind-induced vibration control performance of long-span bridges is related to the inertial mass parameters, with different optimal inertial mass parameters corresponding to different vibration modes. Therefore, to actively achieve better wind-induced vibration control performance for the vertical dampers of long-span bridges, multi-modal control requirements must be considered, and the robustness of the dampers must be enhanced. Adjustable inertial mass parameters should be incorporated into the inertial mass dampers. Summary of the Invention

[0005] This application provides an electronic control device for stepless adjustment of inertial mass parameters, which solves the problem in related technologies where dampers only contain damping units and cannot flexibly adjust inertial mass parameters to obtain better wind vibration control performance.

[0006] In a first aspect, an electronic control device for stepless adjustment of inertial mass parameter is provided, comprising two turntables, each turntable including a junction at the center of the turntable, and multiple branches connected to the junction in an annular, equally spaced manner. Each branch is provided with a linear motion component along its length, and a counterweight component is movably connected to the linear motion component. A motor is fixedly mounted at the junction and synchronously driven to the linear motion component to control the counterweight component to synchronously move away from or towards the motor, thereby changing the second rotational inertia parameter. A speed control box is located between the two turntables, and its output shaft is connected to one turntable at each end. The speed control box is used to adjust the rotational speed of the turntables to change the first rotational inertia parameter.

[0007] In some embodiments, the turntable is a cross-shaped turntable with four branches, each corresponding to one of the four branches of the cross-shaped turntable. The shaft assembly includes a drive shaft and a driven output shaft, both of which are laterally arranged within the speed control box. A drive wheel assembly is provided on the drive shaft, and the two ends of the driven output shaft are rotatably connected to the cross-shaped turntable. A driven wheel assembly is provided on the driven output shaft via bearings, and a gear synchronization component is fixedly provided on the driven wheel assembly. A driven synchronization component is also fixedly provided on the driven output shaft. The drive wheel assembly and the driven wheel assembly are correspondingly meshed and connected, and the gear synchronization component and the driven synchronization component are correspondingly and synchronously meshed and connected via an auxiliary synchronization sleeve to adjust the rotational speed of the cross-shaped turntable.

[0008] In some embodiments, the driving gear assembly includes a brake gear, a first driving gear, a second driving gear, and a third driving gear, all fixedly connected to the driving shaft. The brake gear is driven by a damper via a transverse rack. The driven gear assembly includes a first driven gear, a second driven gear, and a third driven gear arranged sequentially, all connected to the driven output shaft via bearings, and respectively meshing with the first driving gear, the second driving gear, and the third driving gear. The driven synchronization assembly includes a first driven synchronization gear and a second driven synchronization gear. The first driven synchronization gear is located between the first driven gear and the second driven gear, and the second driven synchronization gear is located between the second driven gear and the third driven gear. The gear synchronization assembly includes a first gear synchronization gear and a second gear synchronization gear. The system includes a stepping gear and a third-position synchronizing gear. The first-position synchronizing gear is located on the side of the first driven gear near the first driven synchronizing gear. The second-position synchronizing gear is located on the side of the second driven gear near the second driven synchronizing gear. The third-position synchronizing gear is located on the side of the third driven gear near the second driven synchronizing gear. The auxiliary synchronizing sleeve includes a first synchronizing sleeve and a second synchronizing sleeve, both of which are movable along the length of the driven output shaft and have racks on their inner walls. The first synchronizing sleeve is used to connect or disconnect the first-position synchronizing gear and the first driven synchronizing gear in a synchronous transmission. The second synchronizing sleeve is used to connect or disconnect the second-position synchronizing gear and the second driven synchronizing gear in a synchronous transmission, or to connect or disconnect the third-position synchronizing gear and the second driven synchronizing gear in a synchronous transmission.

[0009] In some embodiments, the first and second synchronous sleeves are provided with movable locking grooves on their annular sides; a fixed rod is also provided laterally inside the speed control box, and two levers are slidably connected on the fixed rod. The two levers are respectively engaged with or disengaged from the corresponding movable locking grooves to drive the first and second synchronous sleeves to slide to the corresponding positions; a positioning ring is slidably provided on both sides of the fixed rod and the two levers to push the corresponding levers to slide laterally and limit the levers.

[0010] In some embodiments, the levers are made of metal; the speed control box also has a horizontal fixing plate with two magnets on it, so that after adjustment, the two levers are attracted to the fixing plate.

[0011] In some embodiments, the linear motion assembly includes a guide rail, a bracket, and a trapezoidal lead screw; the bracket has a through hole, the guide rail is fixedly arranged along the length direction of the support, and brackets are respectively arranged at both ends of the length direction; the two ends of the trapezoidal lead screw pass through the through hole and are fixed by bearings, and are rotatably connected to the two brackets.

[0012] In some embodiments, the counterweight assembly includes a moving platform and a weight block; the moving platform is movably connected to a trapezoidal lead screw via ball nuts and balls, and the weight block is fixedly mounted on the top of the moving platform.

[0013] In some embodiments, the motor and the linear motion component are connected by a gear drive assembly, which includes a ring-shaped main gear and four ring-shaped auxiliary gears. The bottom surface of the ring-shaped main gear is fixed to the junction and is connected to the output end of the motor via a coupling. The four ring-shaped auxiliary gears are respectively fixedly connected to the ends of four trapezoidal lead screws near the motor, and the racks on the periphery of the ring-shaped auxiliary gears mesh with the racks on the top surface of the ring-shaped main gear.

[0014] In some embodiments, a sensor guide rail is fixedly provided on one of the branches along its length. A limit sensor and a reset sensor are slidably connected on the sensor guide rail. A support plate is provided on the side of the moving platform on the corresponding branch near the sensor guide rail. A sensor is provided on the support plate. The sensor moves with the moving platform and is connected to the corresponding limit sensor or reset sensor to control the motor's on / off state.

[0015] Secondly, a method for operating an electronically controlled device with stepless adjustment of inertial mass parameters is provided, which includes a damper installed on a bridge that is connected to a brake gear via a transverse rack and drives a turntable to rotate; the inertial mass parameters are adjustable based on adjusting a first moment of inertia parameter and a second moment of inertia parameter.

[0016] The beneficial effects of the technical solution provided in this application include:

[0017] This application provides an electronically controlled device and its operating method for stepless adjustment of inertial mass parameters. The device adjusts the generated moment of inertia by changing a first moment of inertia parameter and a second moment of inertia parameter. A damper is connected to the device via a transverse rack to achieve adjustable inertial mass parameters. The first moment of inertia parameter is determined by the rotational speed of the two turntables. The rotating shaft assembly in the speed control box can simultaneously adjust the rotational speed of the two turntables, ensuring coordinated movement. By controlling the rotational speed of the rotating shaft assembly, the rotational speed of the two turntables is controlled, thus changing the first moment of inertia parameter. The second moment of inertia parameter is determined by the distance between the four counterweight components and the motor, specifically the size of the circle formed by the circularly distributed counterweight components. The four counterweight components move synchronously towards or away from the motor using the power of the motor, thus changing the second moment of inertia parameter. By configuring this electronically controlled device for stepless adjustment of inertial mass parameters, the damper solves the problem in related technologies where dampers only contain damping units and cannot flexibly adjust the inertial mass parameter to obtain better wind vibration control performance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the cross-shaped turntable structure provided in an embodiment of this application;

[0020] Figure 2 Provided for the embodiments of this application Figure 1 Enlarged view of point A in the image;

[0021] Figure 3 A schematic diagram of the stepless adjustment electronic control device for inertial mass parameters provided in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the relevant cross-sectional structure inside the speed control box provided in the embodiments of this application;

[0023] Figure 5 This is a schematic diagram of the internal structure of the speed control box provided in the embodiments of this application;

[0024] Figure 6 This is a schematic diagram of a support structure with a sensor guide rail provided in an embodiment of this application.

[0025] In the diagram: 1. Speed ​​control box; 2. Turntable; 21. Intersection; 22. Support; 3. Linear motion assembly; 31. Guide rail; 32. Bracket; 33. Trapezoidal lead screw; 4. Counterweight assembly; 41. Moving platform; 42. Weight block; 43. Support plate; 44. Sensor; 5. Connector; 6. Motor; 7. Drive shaft; 8. Driven output shaft; 81. First driven synchronous gear; 82. Second driven synchronous gear; 91. First drive gear; 92. Second drive gear; 93. Third drive gear; 94. Brake gear; 101. First driven... Gear; 102, Second driven gear; 103, Third driven gear; 1010, First gear synchronous gear; 1020, Second gear synchronous gear; 1030, Third gear synchronous gear; 111, First synchronous sleeve; 112, Second synchronous sleeve; 12, Fixed rod; 13, Lever; 14, Positioning ring; 15, Fixed plate; 151, Magnet; 16, Coupling; 171, Ring main gear; 172, Ring secondary gear; 18, Sensor guide rail; 181, Limit sensor; 182, Reset sensor; 19, Transverse rack. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] This application provides an electronic control device and its operation method for stepless adjustment of inertial mass parameters, which can solve the problem in related technologies where dampers only contain damping units and cannot flexibly adjust inertial mass parameters to obtain better wind vibration control performance.

[0028] Since the wind vibration control performance of long-span bridges is related to the inertial mass parameter, and the optimal inertial mass parameter is different for different vibration modes, if the vertical damper of a long-span bridge wants to actively obtain better wind vibration control performance, it is necessary to consider the multi-mode control requirements and enhance the robustness of the damper. Therefore, an adjustable inertial mass parameter device connected to the damper should be set up.

[0029] refer to Figure 1-6An electronically controlled device for stepless adjustment of inertial parameters includes: two turntables 2, each turntable 2 having a junction 21 located at the center of the turntable 2, and multiple equally spaced, ring-shaped branches 22 connected to the junction 21, each branch 22 having a linear motion component 3 along its length, and a counterweight component 4 movably connected to the linear motion component 3; a motor 6, fixedly mounted on the junction 21 and synchronously driven by the linear motion component 3, to control the counterweight component 4 to synchronously move away from or towards the motor 6, thereby changing the second rotational inertia parameter; and a speed control box 1, located between the two turntables 2, with its output shaft connected to one turntable 2 at each end, the speed control box 1 being used to adjust the rotational speed of the turntables 2 to change the first rotational inertia parameter.

[0030] With this structural configuration, the steplessly adjustable inertial mass parameter control device adjusts the generated moment of inertia by changing the first and second moment of inertia parameters. The damper is connected to this device via a rack and pinion drive to achieve adjustable inertial mass parameters. The first moment of inertia parameter is determined by the rotational speed of the two cross discs. The rotating shaft assembly in the speed control box 1 can simultaneously adjust the rotational speed of the two cross discs, ensuring coordinated movement of the two cross discs. By controlling the rotational speed of the rotating shaft assembly, the rotational speed of the two cross discs is controlled, thus changing the first moment of inertia parameter. The second moment of inertia parameter is determined by the distance between the four counterweight components 4 and the motor 6, i.e., the size of the circle when the four counterweight components 4 rotate. The four counterweight components 4 are moved on the linear motion component 3, and move synchronously closer to or away from the motor 6 with the power of the motor 6, thus changing the second moment of inertia parameter. By configuring this steplessly adjustable inertial mass parameter control device, the damper solves the problem in related technologies where dampers only contain damping units and cannot flexibly adjust the inertial mass parameter to obtain better wind vibration control performance.

[0031] It should be noted that dampers are installed at the corresponding locations on the bridge to achieve vibration reduction performance; the device proposed in this application acts on an inertial mass block through a rack, and when the inertial mass block acts, it vibrates up and down, thereby driving the device to rotate, thus greatly improving its vibration reduction performance.

[0032] In some preferred embodiments, the turntable 2 is a cross turntable, with four branches 22, each corresponding to one of the four branches of the cross turntable; the shaft assembly includes a drive shaft 7 and a driven output shaft 8, both of which are laterally arranged within the speed control box 1; the drive shaft 7 is provided with a drive wheel assembly, and the two ends of the driven output shaft 8 are rotatably connected to the cross turntable; the driven output shaft 8 is provided with a driven wheel assembly via bearings, and a gear synchronization assembly is fixedly provided on the driven wheel assembly, and a driven synchronization assembly is also fixedly provided on the driven output shaft 8; the drive wheel assembly and the driven wheel assembly are correspondingly meshed, and the gear synchronization assembly and the driven synchronization assembly are correspondingly meshed through an auxiliary synchronization sleeve to adjust the rotational speed of the cross turntable.

[0033] In this embodiment, the design of the rotating shaft assembly uses a structure of a drive shaft 7 and a driven output shaft 8, providing an effective way to adjust the rotational speed of the cross disc. The drive shaft 7 is equipped with a drive wheel assembly that is connected to the damper drive to transmit power to the driven output shaft 8. The driven output shaft 8 is connected to the drive wheel assembly through corresponding meshing, and the gear synchronization assembly and the driven synchronization assembly are synchronized through an auxiliary synchronization sleeve, so that it can rotate at a different speed than the drive shaft 7, thereby driving the cross disc to rotate at different speeds. It should be noted that this embodiment describes the structure of the disc 2 as a cross disc with four supports 22; however, the disc 2 can have various structural forms, such as a disc structure with multiple supports 22 distributed in a ring at equal intervals on the disc structure.

[0034] In some preferred embodiments, the driving gear assembly includes a brake gear 94, a first driving gear 91, a second driving gear 92, and a third driving gear 93, all of which are fixedly connected to the driving shaft 7. The brake gear 94 is connected to the damper via a transverse rack 19. The driven gear assembly includes a first driven gear 101, a second driven gear 102, and a third driven gear 103 arranged sequentially, all of which are connected to the driven output shaft 8 via bearings and are respectively meshed with the first driving gear 91, the second driving gear 92, and the third driving gear 93. The driven synchronization assembly includes a first driven synchronization gear 81 and a second driven synchronization gear 82. The first driven synchronization gear 81 is located between the first driven gear 101 and the second driven gear 102, and the second driven synchronization gear 82 is located between the second driven gear 102 and the third driven gear 103.

[0035] The gear synchronization assembly includes a first gear synchronization gear 1010, a second gear synchronization gear 1020, and a third gear synchronization gear 1030. The first gear synchronization gear 1010 is located on the side of the first driven gear 101 near the first driven synchronization gear 81. The second gear synchronization gear 1020 is located on the side of the second driven gear 102 near the second driven synchronization gear 82. The third gear synchronization gear 1030 is located on the side of the third driven gear 103 near the second driven synchronization gear 82. An auxiliary synchronization sleeve is also included. It includes a first synchronizing sleeve 111 and a second synchronizing sleeve 112, both of which are movable along the length of the driven output shaft 8 and have racks on their inner walls; the first synchronizing sleeve 111 is used to connect or disconnect the first gear synchronizing gear 1010 and the first driven synchronizing gear 81 in synchronous transmission; the second synchronizing sleeve 112 is used to connect or disconnect the second gear synchronizing gear 1020 and the second driven synchronizing gear 82 in synchronous transmission, or to connect or disconnect the third gear synchronizing gear 1030 and the second driven synchronizing gear 82 in synchronous transmission.

[0036] With this structural arrangement, a brake gear 94 and three drive gears are fixed on the drive shaft 7. The brake gear 94 is used to connect with the damper for transmission and to obtain power. The three drive gears mesh with three driven gears at corresponding positions on the driven output shaft 8, driving the three driven gears to rotate. The three pairs of gears have different speed ratios, representing three different gear positions. The three driven gears are connected to the driven output shaft 8 through bearings, so the driven gears cannot directly drive the driven output shaft 8 to rotate. Two driven synchronous gears are fixed on the driven output shaft 8. The driven synchronous gears are designed with external splines. Similarly, a gear synchronous gear is designed at the root extension of each driven gear, which can connect with the internal splines designed inside the synchronous sleeve. When a gear shift is required, move the position of the synchronizing sleeve left or right. When the first synchronizing sleeve 111 is only engaged with the first driven synchronizing gear 81, and the second synchronizing sleeve 112 is simultaneously engaged with the second driven synchronizing gear 82 and the second gear synchronizing gear 1020, the second driven gear 102 drives the driven output shaft 8 to rotate, while the other two driven gears idle. At this time, the driven output shaft 8 rotates at its slowest speed, which is gear 1. When the first synchronizing sleeve 111 is simultaneously engaged with both the first driven synchronizing gear 81 and the first gear synchronizing gear 1010, the second synchronizing sleeve 112... When the 12 driven synchronous gears 82 are engaged, the driven output shaft 8 is driven to rotate by the first driven gear 101, while the other two driven gears idle. At this time, the driven output shaft 8 rotates at a moderate speed, which is gear position 2. When the first synchronous sleeve 111 is engaged with the first driven synchronous gear 81, and the second synchronous sleeve 112 is engaged with the second driven synchronous gear 82 and the third gear synchronous gear 1030, the third driven gear 103 drives the driven output shaft 8 to rotate, while the other two driven gears idle. At this time, the driven output shaft 8 rotates at the fastest speed, which is gear position 3.

[0037] In some preferred embodiments, the first synchronous sleeve 111 and the second synchronous sleeve 112 are provided with movable locking grooves on their annular sides; a fixed rod 12 is also provided laterally inside the speed control box 1, and two levers 13 are slidably connected on the fixed rod 12. The two levers 13 are respectively engaged with or disengaged from the corresponding movable locking grooves to drive the first synchronous sleeve 111 and the second synchronous sleeve 112 to slide to the corresponding positions; a positioning ring 14 is slidably provided on the fixed rod 12 and on both sides of the two levers 13 to push the corresponding levers 13 to slide laterally and limit the levers 13.

[0038] In this embodiment, the two synchronizing sleeves are provided with movable locking grooves on their annular sides, which allows the lever 13 to engage or disengage with them, pushing it to the corresponding gear position. The positioning ring 14 helps to limit the sliding of the lever 13 and ensures that it is stopped after operation. This prevents misoperation and improves the safety of the system. When it is necessary to adjust the speed, the lever 13 can be pushed by moving the positioning ring 14 on the moving fixed rod 12.

[0039] In some preferred embodiments, the lever 13 is made of metal; the speed control box 1 is also provided with a horizontal fixing plate 15, and the fixing plate 15 is provided with two magnets 151, so that after the adjustment is completed, the two levers 13 are attracted to the fixing plate 15.

[0040] With this structural design, the magnet 151 on the fixing plate 15 provides a stable adsorption and fixing effect for the lever 13 made of metal, so that it can be safely fixed in the designated position when not in use, avoiding misoperation or damage caused by accidental collision or vibration.

[0041] In some preferred embodiments, the linear motion component 3 includes a guide rail 31, a bracket 32, and a trapezoidal lead screw 33; the bracket 32 ​​is provided with a through hole, the guide rail 31 is fixedly arranged along the length direction of the support 22, and the brackets 32 are respectively arranged at both ends of the length direction; the two ends of the trapezoidal lead screw 33 pass through the through hole and are fixed by bearings, and are rotatably connected to the two brackets 32.

[0042] In this embodiment, the guide rail 31 is fixed on each support 22, providing stable support. The bracket 32 ​​is located at both ends of the guide rail 31 and is used to fix the trapezoidal lead screw 33. The bracket has through holes to facilitate the installation and adjustment of the trapezoidal lead screw 33. The trapezoidal lead screw 33 rotates, causing the counterweight assembly 4 connected to it to move linearly. The linear movement assembly 3 achieves precise linear movement of the counterweight assembly 4 through the reasonable combination of the guide rail 31, the bracket 32, and the trapezoidal lead screw 33.

[0043] In some preferred embodiments, the counterweight assembly 4 includes a moving platform 41 and a weight block 42; the moving platform 41 is movably connected to the trapezoidal lead screw 33 via ball nuts and balls, and the weight block 42 is fixedly mounted on the top of the moving platform 41.

[0044] With this structural design, the moving platform 41 serves as a load-bearing structure. Through the design of the ball bearing nut and the ball bearings, the moving platform 41 can move smoothly and linearly along the trapezoidal lead screw 33. The use of the ball bearings reduces friction and improves the efficiency of the movement. The weight block 42 is fixed to the top of the moving platform to generate rotational inertia during rotation.

[0045] In some preferred embodiments, the motor 6 and the linear motion component 3 are connected by a gear drive assembly, which includes a ring-shaped main gear 171 and four ring-shaped auxiliary gears 172. The bottom surface of the ring-shaped main gear 171 is fixed on the junction 21 and is connected to the output end of the motor 6 via a coupling 16. The four ring-shaped auxiliary gears 172 are respectively fixedly connected to the ends of four trapezoidal lead screws 33 near the motor 6, and the racks on the periphery of the ring-shaped auxiliary gears 172 mesh with the racks on the top surface of the ring-shaped main gear 171.

[0046] In this embodiment, the bottom surface of the annular main gear 171 is fixed on the junction 21, and the top is connected to the motor 6 via a coupling 16 to drive the annular main gear 171 to rotate. The four annular secondary gears 172 are respectively fixedly connected to the ends of the corresponding trapezoidal lead screw 33 near the motor 6, and the four annular secondary gears 172 are respectively meshed with the annular main gear 171, thereby synchronously driving the four annular secondary gears 172 to rotate, which in turn drives the trapezoidal lead screw 33 to rotate synchronously. The counterweight assembly 4 located on the trapezoidal lead screw 33 can synchronously move away from or towards the motor 6.

[0047] In some preferred embodiments, a sensor guide rail 18 is fixedly provided along the length of one branch 22, and a limit sensor 181 and a reset sensor 182 are slidably connected on the sensor guide rail 18; a support plate 43 is provided on the side of the moving platform 41 on the corresponding branch 22 near the sensor guide rail 18, and a sensor 44 is provided on the support plate 43; the sensor 44 moves with the moving platform 41 and is signal-connected to the corresponding limit sensor 181 or reset sensor 182 to control the on / off state of the motor 6.

[0048] With this structural design, the limit sensor 181 and the reset sensor 182 are slidably connected on the sensor guide rail 18. The sensor guide rail 18 is fixed to one of the branches 22 by screws, and three sensors are installed on it, with the limit sensors 181 on both sides and the reset sensor 182 in the middle. The corresponding moving platform 41 is equipped with a sensing element 44. When the sensing element 44 on the moving platform 41 reaches the position of the corresponding sensor, it will trigger the motor to cut off the power. By adjusting the position of the sensor, the travel range of the moving platform 41 can be controlled to avoid exceeding its travel limit, thereby improving the safety of the system.

[0049] This application provides an operating method for an electronically controlled device with stepless adjustment of inertial mass parameters, comprising: a damper installed on a bridge is connected to a brake gear 94 via a transverse rack 19 and drives a turntable 2 to rotate; and the inertial mass parameters are adjustable based on the adjustment of a first moment of inertia parameter and a second moment of inertia parameter.

[0050] In this method, the stepless adjustment of the inertial mass parameter is a device that works in conjunction with the damper to adjust the inertial mass parameter. The damper is located between the bridge tower and the main beam and is connected to the control device via a transverse rack 19. By adjusting the first and second rotational inertia parameters, the inertial mass parameter can be adjusted, which solves the problem that the damper only contains a damping unit and cannot flexibly adjust the inertial mass parameter to obtain better wind vibration control performance.

[0051] The beneficial effects of this invention include:

[0052] 1. By using large and small gear meshing and lead screw structure, the weight block 42 is controlled to move synchronously, realizing stepless adjustment of rotational inertia. The four counterweight components 4 on one side only need one motor 6 to achieve precise synchronous movement, which simplifies the structure and reduces costs.

[0053] 2. The trapezoidal lead screw 33 used in this design can prevent the centrifugal force of the counterweight from rotating and causing the lead screw to rotate, which would drive the motor 6 to reverse through the gear drive assembly, damage the motor 6, and cause an accident.

[0054] 3. The relative rotational speed of the weight block 42 is adjusted by the speed control box 1. The speed control box 1 has three pairs of meshing gears, corresponding to three gear positions. When changing speed, the position of the first synchronous sleeve 111 and the second synchronous sleeve 112 can be adjusted by the lever 13. The synchronous sleeves are machined with internal teeth. The synchronous sleeves control the connection of the corresponding driven gears, thereby controlling which pair of gears is active, without having to push the heavy gears, which is convenient for manual operation.

[0055] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0056] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An electronically controlled device for stepless adjustment of inertial mass parameters, characterized in that, It includes: Two turntables (2), each turntable (2) includes a junction (21) located at the center of the turntable (2), and a plurality of branches (22) connected to the junction (21) in a ring-shaped and equally spaced manner. Each branch (22) is provided with a linear moving component (3) in the length direction, and a counterweight component (4) is movably connected to the linear moving component (3). The motor (6) is fixedly installed at the junction (21) and synchronously connected to the linear motion component (3) to control the counterweight component (4) to move away from or closer to the motor (6) synchronously, so as to change the second rotational inertia parameter. Speed ​​control box (1) is located between the two turntables (2), and its output shaft is connected to one of the turntables (2) at each end. The speed control box (1) is used to adjust the rotational speed of the turntables (2) to change the first moment of inertia parameter. The number of branches (22) is four, and they correspond to the four branches of the turntable (2) respectively; the rotating shaft assembly includes a drive shaft (7) and a driven output shaft (8), both of which are arranged laterally in the speed control box (1); the drive shaft (7) is provided with a drive wheel assembly, and the two ends of the driven output shaft (8) are rotatably connected to the turntable (2); the driven output shaft (8) is provided with a driven wheel assembly through bearings, the driven wheel assembly is fixedly provided with a gear synchronization assembly, and the driven output shaft (8) is also fixedly provided with a driven synchronization assembly; the drive wheel assembly and the driven wheel assembly are correspondingly meshed and connected, and the gear synchronization assembly and the driven synchronization assembly are correspondingly meshed and connected through an auxiliary synchronization sleeve to adjust the rotational speed of the turntable (2); The drive wheel assembly includes a brake gear (94), which is connected to the damper via a transverse rack (19).

2. The electronic control device for stepless adjustment of inertial mass parameters as described in claim 1, characterized in that: The drive wheel assembly also includes a first drive gear (91), a second drive gear (92) and a third drive gear (93), all of which are fixedly connected to the drive shaft (7); The driven gear assembly includes a first driven gear (101), a second driven gear (102), and a third driven gear (103) arranged in sequence. They are all connected to the driven output shaft (8) through bearings and are respectively meshed with the first driving gear (91), the second driving gear (92), and the third driving gear (93). The driven synchronization component includes a first driven synchronization gear (81) and a second driven synchronization gear (82); the first driven synchronization gear (81) is disposed between the first driven gear (101) and the second driven gear (102), and the second driven synchronization gear (82) is disposed between the second driven gear (102) and the third driven gear (103); The gear synchronization assembly includes a first gear synchronization gear (1010), a second gear synchronization gear (1020), and a third gear synchronization gear (1030). The first gear synchronization gear (1010) is located on the side of the first driven gear (101) near the first driven synchronization gear (81). The second gear synchronization gear (1020) is located on the side of the second driven gear (102) near the second driven synchronization gear (82). The third gear synchronization gear (1030) is located on the side of the third driven gear (103) near the second driven synchronization gear (82). The auxiliary synchronizing sleeve includes a first synchronizing sleeve (111) and a second synchronizing sleeve (112), both of which are movable along the length direction of the driven output shaft (8) and have racks on their inner walls; the first synchronizing sleeve (111) is used to synchronously connect or disconnect the first gear synchronizing gear (1010) and the first driven synchronizing gear (81); the second synchronizing sleeve (112) is used to synchronously connect or disconnect the second gear synchronizing gear (1020) and the second driven synchronizing gear (82), or to synchronously connect or disconnect the third gear synchronizing gear (1030) and the second driven synchronizing gear (82).

3. The electronic control device for stepless adjustment of inertial mass parameters as described in claim 2, characterized in that: The first synchronization sleeve (111) and the second synchronization sleeve (112) are provided with movable locking grooves on their annular sides; The speed control box (1) is also provided with a horizontal fixed rod (12). Two levers (13) are slidably connected on the fixed rod (12). The two levers (13) are respectively engaged or disengaged from the corresponding moving slots to drive the first synchronous sleeve (111) and the second synchronous sleeve (112) to slide to the corresponding positions. On the fixed rod (12), and on both sides of the two levers (13), positioning rings (14) are slidably provided to push the corresponding levers (13) to slide laterally and limit the levers (13).

4. The electronic control device for stepless adjustment of inertial mass parameters as described in claim 3, characterized in that: The lever (13) is made of metal. The speed control box (1) is also provided with a horizontal fixing plate (15), and the fixing plate (15) is provided with two magnets (151) so that after the adjustment is completed, the two levers (13) are attracted to the fixing plate (15).

5. The electronic control device for stepless adjustment of inertial mass parameters as described in claim 1, characterized in that: The linear motion assembly (3) includes a guide rail (31), a bracket (32), and a trapezoidal lead screw (33). The bracket (32) is provided with a through hole, the guide rail (31) is fixedly arranged along the length direction of the support (22), and the bracket (32) is provided at both ends of the length direction respectively; the two ends of the trapezoidal screw (33) pass through the through hole and are fixed by bearings, and are rotatably connected to the two brackets (32).

6. The electronic control device for stepless adjustment of inertial mass parameters as described in claim 5, characterized in that: The counterweight assembly (4) includes a mobile platform (41) and a weight block (42). The mobile platform (41) is movably connected to the trapezoidal lead screw (33) via ball nuts and balls, and the weight block (42) is fixedly mounted on the top of the mobile platform (41).

7. The electronic control device for stepless adjustment of inertial mass parameters as described in claim 5, characterized in that: The motor (6) and the linear motion component (3) are connected by a gear drive assembly, which includes a ring main gear (171) and four ring secondary gears (172). The bottom surface of the ring main gear (171) is fixed on the junction (21) and is connected to the output end of the motor (6) via a coupling (16). The four ring-shaped auxiliary gears (172) are fixedly connected to the ends of the four trapezoidal lead screws (33) near the motor (6), and the racks on the periphery of the ring-shaped auxiliary gears (172) mesh with the racks on the top surface of the ring-shaped main gear (171).

8. The electronic control device for stepless adjustment of inertial mass parameters as described in claim 6, characterized in that: On one of the supports (22), a sensor guide rail (18) is fixedly provided along its length direction. A limit sensor (181) and a reset sensor (182) are slidably connected on the sensor guide rail (18). A support plate (43) is provided on the side of the moving platform (41) on the support (22) near the sensor guide rail (18). A sensor (44) is provided on the support plate (43). The sensor (44) moves with the mobile platform (41) and is connected to the corresponding limit sensor (181) or reset sensor (182) to control the on / off state of the motor (6).

9. An operating method for an electronically controlled device with stepless adjustment of inertial mass parameters, characterized in that, It includes: An electronic control device for stepless adjustment of inertial mass parameters as described in any one of claims 1-8 is provided; The damper installed on the bridge is connected to the brake gear (94) via a transverse rack (19) and drives the turntable (2) to rotate; the inertial mass parameter can be adjusted based on the adjustment of the first rotational inertia parameter and the second rotational inertia parameter.

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