Magnetic suspension swivel beam weighing counterweight system
By setting up a magnetic levitation support unit between the upper and lower rotors of the bridge rotor structure, and using magnetic levitation technology to perform contactless weighing and counterweight, the problems of low accuracy and complex operation of traditional methods are solved, and efficient and safe bridge rotor construction is achieved.
Patent Information
- Application Number
- CN202421275828.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-05
AI Technical Summary
In the construction of traditional bridge rotary bodies, the weighing method has problems such as low accuracy, complex operation and huge equipment, and the addition of solid counterweights after weighing affects the construction efficiency.
Magnetic levitation technology is used to set up a magnetic levitation support unit between the upper and lower rotors of the bridge rotary structure, and the vertical force is generated by no contact to weigh and counterweight, which is more convenient to operate and is suitable for complex working conditions.
It realizes high-precision weighing and counterweight, and has stable operation, high efficiency, high safety, effectively shortens the engineering cycle and reduces safety hazards.
Smart Images
Figure CN222438950U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of swivel bridge construction, in particular to a magnetic suspension swivel beam weighing and counterweighting system. Background Art
[0002] The rotation method has the advantages of little impact on the operation of existing lines, less time required to occupy the railway skylight, and safety and reliability, and is widely used. In the construction of bridge rotation, in order to ensure that the bridge structure can be safely and smoothly rotated into place after being cast or spliced at a non-design axis position, a weighing test is required before the rotation, and the required rotation torque is calculated based on this, so as to control the rotation process and ensure the smooth and safe rotation. The traditional weighing method is mainly achieved by setting a jack between the upper and lower turntables to apply vertical top force or weight on both sides of the beam body. There are problems such as low precision, complex operation, and large equipment. After the weighing test is completed, it is necessary to add counterweights (such as concrete cubes, water tanks, sandbags and other solid materials) on the top of the beam to counterbalance the unbalanced torque, which affects the efficiency of bridge rotation construction. Therefore, a new, high-precision bridge rotation weighing and counterweight system that can adapt to complex working conditions is urgently needed.
[0003] Magnetic levitation technology has been widely used in wind power, rail transportation, aerospace and other fields due to its advantages of high control accuracy and light weight. However, the application of magnetic levitation technology in bridge rotation weighing and counterweight system has not yet been seen. Summary of the invention
[0004] Therefore, based on the above background, the utility model provides a magnetic levitation swivel beam weighing and counterweighting system and a swivel bridge weighing and counterweighting method. The utility model arranges a magnetic levitation support unit between the upper and lower turntables of the bridge swivel structure, which can weigh and counterweight the swivel beam by generating vertical force without contact. The operation is more convenient, and it is more suitable for complex working conditions. The weighing results are highly accurate, and the weighing and counterweighting operations are more stable and efficient.
[0005] The technical solution provided by the utility model is:
[0006] A magnetic suspension swivel beam weighing and counterweighting system, comprising:
[0007] A magnetic suspension support system, comprising a magnetic suspension support unit, wherein the magnetic suspension support unit comprises at least one magnetic suspension support assembly; the magnetic suspension support unit is installed in the entire range of the outer projection of the circumference of the upper turntable of the bridge rotating structure, or in a partial range;
[0008] The magnetic suspension support assembly comprises a rotor coil installed on an upper turntable of a bridge rotating structure and a long stator winding installed on a lower turntable of the bridge rotating structure; the rotor coil comprises an arc ring-shaped or straight bar-shaped rotor core and a rotor coil wound on the rotor core; the long stator winding comprises an arc ring-shaped or straight bar-shaped stator core and a stator coil wound on the stator core;
[0009] A monitoring mechanism, comprising at least one displacement sensor and at least one acceleration sensor, wherein the displacement sensor and the acceleration sensor are mounted on the upper turntable;
[0010] The control mechanism includes a controller, wherein the controller is electrically connected to the displacement sensor and the acceleration sensor respectively; the controller is electrically connected to the stator coil through a driver; the controller is electrically connected to the rotor coil through the driver;
[0011] The controller controls the direction and magnitude of the current passed into the stator coil and the rotor coil through the driver to control the direction and magnitude of the vertical force between the rotor coil and the long stator winding.
[0012] One implementation method is that the number of the magnetic levitation support units is at least 4, of which two magnetic levitation support units are symmetrically arranged about the center of the upper turntable or the lower turntable along the transverse direction of the bridge, and the other two magnetic levitation support units are symmetrically arranged about the center of the upper and lower turntables or the lower turntable along the longitudinal direction of the bridge.
[0013] One implementation method is that it also includes a sand box, and the sand box is arranged on the lower turntable at equal angles around the circumference.
[0014] One implementation method is that it also includes supporting feet, and the supporting feet are arranged on the lower turntable at equal angles around the circumference.
[0015] One implementation method is that the support legs are located on the outer circle of the sand box, or are arranged on the same circumference as the sand box.
[0016] One implementation manner is that the number of the magnetic levitation support components of the magnetic levitation support unit is 1, 2, or 3.
[0017] Based on the same utility model concept, the utility model also provides a swivel bridge weighing and counterweighting method based on the above-mentioned magnetic suspension swivel beam weighing and counterweighting system, which comprises the following steps:
[0018] (1) Weighing of rotating beam:
[0019] Step S1: Weighing along the bridge
[0020] According to the signals fed back by the displacement sensor and the acceleration sensor, the controller controls the direction of the current passed into one of the magnetic levitation support units along the longitudinal direction of the bridge, so that a repulsive force is generated between the rotor coil and the long stator winding of the magnetic levitation support component, and continuously controls and increases the magnitude of the current passed into the magnetic levitation component until the ball joint rotates slightly, driving the bridge rotating structure to rotate slightly. At the same time, the controller controls the current passed into the magnetic levitation support component of another magnetic levitation support unit along the longitudinal direction of the bridge and two magnetic levitation support units respectively along the transverse direction of the bridge, so that the current passed into the magnetic levitation support component of another magnetic levitation support unit and two magnetic levitation support units respectively along the transverse direction of the bridge is smaller than the current of the upper magnetic levitation support unit along the longitudinal direction of the bridge, that is, the vertical support force generated by the magnetic levitation support component is also small, so that the bridge rotating structure is stable;
[0021] Step S2: Weighing in transverse direction
[0022] According to the signals fed back by the displacement sensor and the acceleration sensor, the controller controls the current passed into one of the magnetic levitation support units along the transverse direction of the bridge, so that a repulsive force is generated between the rotor coil and the long stator winding of the magnetic levitation support component, and continuously controls and increases the current passed into the magnetic levitation support component until the ball joint rotates slightly, driving the bridge rotating structure to rotate slightly. At the same time, the controller controls the current passed into another magnetic levitation support unit along the transverse direction of the bridge and the magnetic levitation support components of the two magnetic levitation support units respectively along the longitudinal direction of the bridge, and the current passed into another magnetic levitation support unit and the two magnetic levitation support units respectively along the transverse direction of the bridge is less than the current of the upper magnetic levitation support unit along the transverse direction of the bridge, so that the bridge rotating structure is stable;
[0023] Then, according to the current introduced when the bridge rotating structure rotates in the longitudinal and transverse directions, the unbalanced torque, friction torque, eccentricity and friction coefficient of the rotating structure are calculated through the algorithm model.
[0024] (2) Rotating beam counterweight
[0025] During the rotation of the bridge, according to the unbalanced torque, friction torque, eccentricity and friction coefficient of the rotating structure obtained by weighing in the transverse and longitudinal directions of the bridge in step (1), a controller is used to control the corresponding current to be supplied to one of the magnetic suspension support units in the longitudinal direction of the bridge, so that an attractive force is generated between the rotor coil and the long stator winding of the magnetic suspension support assembly, and current is supplied to the other two magnetic suspension support units in the longitudinal and transverse directions of the bridge, so that a repulsive force is generated between the rotor coil and the long stator winding of the magnetic suspension support assembly, so as to ensure the balance of the bridge rotating structure during the rotation process.
[0026] The above technical solution has the following beneficial effects:
[0027] The utility model applies magnetic levitation technology to the weighing and counterweighting of a swivel beam for the first time. A magnetic levitation support unit is arranged between the upper and lower turntables of the bridge swivel structure, and an electromagnetic force is generated by the current passed therethrough to provide a vertical supporting force or a downward pulling force for the swivel beam, so that the weighing and counterweighting of the swivel beam can be realized. The swivel beam is weighed and counterweighted by generating a vertical force without contact, which is more convenient to operate and more suitable for complex working conditions. The weighing result has high accuracy, and the weighing and counterweighting operations are more stable, efficient, and safer. In practical applications, the project period can be effectively shortened and potential safety hazards can be minimized. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0029] Figure 1 The structure diagram of the weighing and counterweight system of the rotating beam of the utility model is shown in FIG. Figure 1 .
[0030] Figure 2 The structure diagram of the weighing and counterweight system of the rotating beam of the utility model is shown in FIG. Figure 2 .
[0031] Figure 3 for Figure 1 Schematic diagram of the BB cross section.
[0032] Figure 4 This is a schematic diagram of the configuration structure of the magnetic levitation support unit of Example 1 of the utility model.
[0033] Figure 5 This is a schematic diagram of the configuration structure of the magnetic suspension support unit of Example 2 of the utility model Figure 1 .
[0034] Figure 6 This is a schematic diagram of the configuration structure of the magnetic suspension support unit of Example 2 of the utility model Figure 2 .
[0035] Figure 7 The figure is a schematic diagram of the magnetic suspension weighing and counterweight principle of the utility model.
[0036] Figure 8 Figure 1 is a schematic diagram of the drive circuit structure of the driver. Figure 8 (a) is the circuit for increasing current. Figure 8 (b) is a circuit for reducing current;
[0037] Fig. 9 This is a schematic diagram of the configuration structure of the magnetic levitation support unit of Example 3 of the utility model.
[0038] In the figure, the reference numerals are: 1, bridge pier or main beam, 2, upper turntable, 3, lower turntable, 4, ball joint, 5, support leg, 6, sand box, 7, rotor coil, 8, long stator winding, 9, monitoring mechanism, 10, controller, 11, fixing bolt, 12, driver. DETAILED DESCRIPTION
[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0041] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0042] The utility model is further described below in conjunction with the accompanying drawings.
[0043] It is well known in the art that the bridge rotating structure includes a pier or main beam 1, an upper turntable 2, a lower turntable 3, and a ball joint 4. The positional relationship and connection relationship thereof are common knowledge in the art, so they will not be elaborated here.
[0044] Example 1: Reference Figures 1 to 4 A magnetic suspension swivel beam weighing and counterweighting system is shown, comprising:
[0045] A magnetic suspension support system, comprising four magnetic suspension support units, one magnetic suspension support unit comprising one magnetic suspension support assembly, two of which are symmetrically arranged about the center of an upper turntable or a lower turntable along a transverse direction of the bridge, and the other two magnetic suspension support units are symmetrically arranged about the center of an upper turntable or a lower turntable along a longitudinal direction of the bridge;
[0046] The magnetic levitation support assembly includes a rotor coil 7 installed on the upper turntable 2 of the bridge swivel structure and a long stator winding 8 installed on the lower turntable 3 of the bridge swivel structure; the rotor coil 7 includes an arc ring-shaped or straight bar-shaped rotor core 71 and a rotor coil wound on the rotor core 71; the long stator winding 8 includes an arc ring-shaped or straight bar-shaped stator core 81 and a stator coil wound on the stator core 81. Preferably, the stator core and the rotor core are in the shape of an arc ring; the rotor coil is capable of sensing changes in the magnetic field and passing corresponding currents to control the magnetic levitation system. The long stator winding is responsible for generating a stable magnetic field for supporting or pushing suspended objects.
[0047] The monitoring mechanism 9 includes at least one displacement sensor and at least one acceleration sensor, and the displacement sensor and the acceleration sensor are installed on the upper turntable 2; specifically, the number of the displacement sensor and the acceleration sensor is at least 4, which are arranged at equal angles on the top surface, side wall or bottom surface of the upper turntable.
[0048] The control mechanism includes a controller 10, wherein the controller is electrically connected to the displacement sensor and the acceleration sensor respectively; the controller is electrically connected to the stator coil through the driver; the controller is electrically connected to the rotor coil through the driver;
[0049] The controller 10 controls the direction and magnitude of the current passed into the stator coil and the rotor coil through the driver to control the direction and magnitude of the vertical force between the rotor coil 7 and the long stator winding 8; specifically, the signal output end of the displacement sensor and the acceleration sensor is electrically connected to the signal input end of the controller, the signal output end of the controller is electrically connected to the signal input end of the driver, and the signal output end of the driver is electrically connected to the rotor coil and the stator coil.
[0050] The controller can be a single-chip microcomputer, such as a 51 single-chip microcomputer; the displacement sensor can be a magnetostrictive displacement sensor, and the acceleration sensor can be a piezoresistive acceleration sensor. The driver can be a three-level PWM switch power amplifier. Figure 7 As shown in the figure, in the specific application process, the controller sends a command signal to the driver according to the information of whether the upper turntable is slightly moved fed back by the displacement sensor and the acceleration sensor, and controls the magnitude of the current passed to the rotor coil and the stator coil through the driver; combined with the attached Figure 8 , attached Figure 8 (a) is a circuit for increasing current. Figure 8 (b) is a circuit for reducing current. The current size is controlled by changing the circuit form to achieve the required electromagnetic force. The positive and negative (direction) of the input current can be changed by changing the attached Figure 8 The positive and negative pole positions of the capacitor are realized (in the figure: VDC represents the DC voltage; Sa and Sb represent the power switches; VL represents the linear voltage).
[0051] It also includes a sand box 6, and the sand box 6 is arranged on the lower turntable 3 at equal angles around the circumference.
[0052] It also includes legs 5, which are arranged on the lower turntable 3 at equal angles. The legs 5 are safety legs that support the stability of the structure before and during the rotation, preventing rotation caused by imbalance during the rotation and ensuring safety during the rotation. The sand box is a safety leg that ensures the stability of the supporting structure before the rotation and needs to be removed during the rotation. The sand box and the legs 5 can both ensure the stability of the rotating structure during the weighing or counterweighting process of the rotating body.
[0053] In specific applications, the sand box and the support legs 5 can be cast by concrete.
[0054] The support legs 5 are located on the outer circle of the sand box 6 , or are arranged on the same circumference as the sand box 6 . In this embodiment, the support legs 5 are located on the outer circle of the sand box 6 .
[0055] In this embodiment, Figure 4 As shown, in this embodiment, the number of the magnetic levitation support units is 4, and the magnetic levitation support unit includes 1 magnetic levitation support assembly.
[0056] In specific applications, the rotor coil 7 and the long stator winding 8 can be respectively installed on the upper turntable 2 and the lower turntable 3 by fixing bolts 11. One embodiment can be shown in the figure. Specifically, the rotor core and the stator core can be detachably installed by fixing bolts, so that they can be reused. There is also an embodiment, the fixing bolts can be selected as L-shaped bolts, and the L-shaped bolts are embedded before the concrete of the upper and lower turntables is poured. The rotor coil is tightened and fixed to the upper turntable by nuts, and the long stator winding is fixed to the lower turntable. A single rotor coil or long stator winding requires at least four sets of L-shaped bolts (with nuts). When the weighing test or rotation is completed, the nuts are loosened, and the magnetic suspension support assembly is removed for reuse.
[0057] Example 2: Reference Figures 1 to 3 , Figures 5 to 8 A magnetic suspension rotating beam weighing and counterweight system is shown, as shown in Figure 5 and Figure 6As shown, compared with Embodiment 1, the number of the magnetic suspension support units in this embodiment is 4, the magnetic suspension support unit includes 2 magnetic suspension support components, and the lower turntable is further provided with a sand box 6 outside the magnetic suspension support component.
[0058] The magnetic levitation support unit of the present embodiment is independently constructed by assembling a plurality of modular magnetic levitation support components. Compared with a magnetic levitation support unit of a single magnetic levitation support component of the same size, for example, a single magnetic levitation support component whose arc-shaped stator core or rotor core has an angle of 2β, the magnetic levitation support unit of the present embodiment is assembled from two magnetic levitation support components whose stator core or rotor core has an angle of β, that is, a two-stage magnetic levitation support unit is adopted.
[0059] In specific applications, the magnetic levitation support unit may also include three magnetic levitation support components, that is, the magnetic levitation support unit is a three-section type. The use of a multi-section magnetic levitation support unit can realize segmented power supply to reduce losses.
[0060] Embodiment 3: According to Figures 1 to 3 , Fig. 9 A magnetic suspension rotating beam weighing and counterweighting system is shown in FIG. 1 . Compared with Embodiment 1 and Embodiment 2, this embodiment is specifically as follows Fig. 9 As shown, the magnetic levitation support unit is installed in the entire range of the outer circumference projection of the upper and lower turntables. For example, the number of the magnetic levitation support components is 12, that is, the number of magnetic levitation support components of one magnetic levitation support unit can be 3, which are connected head to tail for splicing.
[0061] In specific applications, the magnetic suspension support unit of the utility model can be installed in the entire range of the projection of the outer circumference of the upper and lower turntables, or can be installed in a partial range along the projection of the outer circumference of the upper and lower turntables. For example, in a weighing test, the magnetic suspension support unit is installed only in a partial range along the bridge (as in Embodiments 1 and 2); in counterweighting, the magnetic suspension support unit is installed in the entire range (see the attached Fig. 9 As shown), of course, its implementation and application are not limited to the above; for example, the local installation of Example 1 and Example 2 can also be used for counterweight.
[0062] The size (corresponding to the angle of the iron core) and the number of the magnetic suspension support components in the magnetic suspension unit of the utility model are adaptively set according to the size of the bridge swivel used and the actual on-site construction conditions.
[0063] The steps of weighing and balancing the swivel beam using the magnetic suspension swivel beam weighing and balancing system of Example 1 and Example 2 are as follows:
[0064] (1) Weighing of rotating beam:
[0065] Step S1: Weighing along the bridge
[0066] According to the signals fed back by the displacement sensor and the acceleration sensor, the controller controls the direction of the current passed into one of the magnetic suspension support units along the longitudinal direction of the bridge, so that a repulsive force is generated between the rotor coil 7 and the long stator winding 8 of the magnetic suspension support component, and continuously controls to increase the current passed into the magnetic suspension support component until the ball joint 4 rotates slightly, driving the bridge rotating structure to rotate slightly. At the same time, the controller controls the current passed into another magnetic suspension support unit along the longitudinal direction of the bridge and two magnetic suspension support units along the transverse direction of the bridge. The current passed into another magnetic suspension support unit and two magnetic suspension support units along the transverse direction of the bridge is smaller than the current of the upper magnetic suspension support unit along the longitudinal direction of the bridge, that is, the vertical support force generated by the magnetic suspension support component is also small, so that the bridge rotating structure is stable.
[0067] Step S2: Weighing in transverse direction
[0068] According to the signals fed back by the displacement sensor and the acceleration sensor, the controller controls the current passed into one of the magnetic suspension support units along the transverse direction of the bridge, so that a repulsive force is generated between the rotor coil 7 and the long stator winding 8 of the magnetic suspension support component, and continuously controls to increase the current passed into the magnetic suspension support component until the ball joint 4 rotates slightly, driving the bridge rotating structure to rotate slightly. At the same time, the controller controls the current passed into another magnetic suspension support unit along the transverse direction of the bridge and the magnetic suspension support components of the two magnetic suspension support units respectively along the longitudinal direction of the bridge, and the current passed into another magnetic suspension support unit and the magnetic suspension support components of the two magnetic suspension support units respectively along the transverse direction of the bridge is less than the current of the upper magnetic suspension support unit along the transverse direction of the bridge, so that the bridge rotating structure is stable;
[0069] Then, according to the current when the bridge rotating structure rotates in the longitudinal and transverse directions, the unbalanced torque, friction torque, eccentricity and friction coefficient of the rotating structure are calculated through the algorithm model. Specifically, the force generated is determined by the magnitude of the current, and then the unbalanced torque, friction torque, eccentricity and friction coefficient of the rotating structure are obtained through the conventional set of equations. It is consistent with the traditional principle, except that the electromagnetic system needs to convert the current value into supporting force.
[0070] (2) Rotating beam counterweight
[0071] During the rotation of the bridge, according to the unbalanced torque, friction torque, eccentricity and friction coefficient of the rotating structure obtained by weighing in the transverse and longitudinal directions of the bridge in step (1), a controller is used to control the magnetic suspension support assembly of one of the magnetic suspension support units in the longitudinal direction of the bridge to pass a corresponding current, so that an attractive force is generated between the rotor coil 7 and the long stator winding 8 of the magnetic suspension support assembly, and current is provided to the other two magnetic suspension support units in the longitudinal and transverse directions of the bridge, so that a repulsive force is generated between the rotor coil 7 and the long stator winding 8 of the magnetic suspension support assembly, so as to ensure the balance of the bridge rotating structure during the rotation process.
[0072] For example, Figure 5 As shown, during the rotation of the bridge, according to the unbalanced moment of the bridge rotation, eccentricity and other parameters obtained from the weighing tests in the transverse and longitudinal directions, the corresponding negative current value is connected to the magnetic suspension support assembly in the longitudinal direction +X (or transverse direction +Y) (assuming that the negative current produces attraction), and a certain positive current is provided to the magnetic suspension support assembly in the longitudinal direction -X, transverse direction +X and transverse direction -Y (or transverse direction -Y, longitudinal direction +X and longitudinal direction -Y) to ensure the balance of the structure during the rotation.
[0073] When the utility model is used in a specific application, the weighing and counterweight system can be adjusted in posture, and further can realize the traction and boosting functions of the rotation, that is, it can play an auxiliary role in the rotation of the bridge. For example, Example 3 can be used to assist the rotation of the bridge. This is a specific application of the utility model, not the technical content of the utility model, so it will not be elaborated.
[0074] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A magnetic suspension swivel beam weighing and counterweighting system, characterized in that: It includes: A magnetic suspension support system, comprising a magnetic suspension support unit, wherein the magnetic suspension support unit comprises at least one magnetic suspension support assembly; the magnetic suspension support unit is installed in the entire range of the outer projection of the circumference of the upper turntable of the bridge rotating structure, or in a partial range; The magnetic suspension support assembly comprises a rotor coil installed on an upper turntable of a bridge rotating structure and a long stator winding installed on a lower turntable of the bridge rotating structure; the rotor coil comprises an arc ring-shaped or straight bar-shaped rotor core and a rotor coil wound on the rotor core; the long stator winding comprises an arc ring-shaped or straight bar-shaped stator core and a stator coil wound on the stator core; A monitoring mechanism, comprising at least one displacement sensor and at least one acceleration sensor, wherein the displacement sensor and the acceleration sensor are mounted on the upper turntable; The control mechanism includes a controller, wherein the controller is electrically connected to the displacement sensor and the acceleration sensor respectively; the controller is electrically connected to the stator coil through a driver; the controller is electrically connected to the rotor coil through the driver; The controller controls the direction and magnitude of the current passed into the stator coil and the rotor coil through the driver to control the direction and magnitude of the vertical force between the rotor coil and the long stator winding.
2. A magnetic suspension swivel beam weighing and counterweighting system according to claim 1, characterized in that: The number of the magnetic levitation support units is at least 4, of which 2 are symmetrically arranged about the center of the upper turntable or the lower turntable along the transverse direction of the bridge, and the other 2 are symmetrically arranged about the center of the upper and lower turntables or the lower turntable along the longitudinal direction of the bridge.
3. The magnetic suspension swivel beam weighing and counterweighting system according to claim 1, characterized in that: It also includes a sand box, and the sand box is arranged on the lower turntable at equal angles around the circumference.
4. The magnetic suspension swivel beam weighing and counterweighting system according to claim 1, characterized in that: It also includes supporting feet, and the supporting feet are arranged on the lower turntable at equal angles around the circumference.
5. A magnetic suspension swivel beam weighing and counterweighting system according to claim 4, characterized in that: The support legs are located on the outer circle of the sand box, or are arranged on the same circumference as the sand box.
6. The magnetic suspension swivel beam weighing and counterweighting system according to claim 2, characterized in that: The number of the magnetic suspension support components of the magnetic suspension support unit is 1, 2 or 3.