A large ferris wheel car leveling control method

Abstract

A large Ferris wheel car leveling control method, including a rotating leveling drive mechanism, the rotating leveling drive mechanism is fixedly connected with a suspension ring symmetrically on both sides, and the rotating leveling drive mechanism is connected with a left car and a right car symmetrically on both sides; a chassis is fixedly connected inside the rotating leveling drive mechanism, the left car and the right car; the rotating leveling drive mechanism can drive the left car, the right car and the chassis to rotate around the axis of the rotating leveling drive mechanism. The rotating leveling mechanism is simple and compact in structure, the weight of the whole car is supported by the suspension ring and the rotating support ring, the force balance is balanced, the car control precision is high and the control process is stable. The control logic of the two groups of independent drive units is specially optimized, combined with the operation parameter comparison and judgment of the two sets of drive systems, the fault drive unit can be stopped in time when the Ferris wheel car and the drive system fail, so that the car can keep horizontal state and ensure safety when the Ferris wheel is running.

Description

Technical Field

[0001] This invention relates to the field of cultural tourism and amusement equipment technology, specifically a method for leveling and controlling the cabins of a large Ferris wheel. Background Technology

[0002] Ferris wheels are common amusement rides. Small Ferris wheels, with their smaller cabins, can maintain a horizontal position using their own weight during rotation. Large Ferris wheels, however, can accommodate dozens of people in their cabins. Their greater weight means that the connection between the cabins and the main wheels generally cannot be articulated. Even if an articulated connection is used, the significant weight results in high friction, making it difficult to maintain the cabin's overall level using only its own weight. An additional balancing system is needed to drive and control the cabins, ensuring they remain level during Ferris wheel operation.

[0003] Because large Ferris wheels have a large number of passengers in their gondolas, the ability of the leveling drive mechanism to promptly and accurately adjust tilted gondolas to a horizontal position is crucial for the operation of the Ferris wheel. Furthermore, due to the significant weight of the gondolas, which can hold dozens of people, the considerable weight during operation places high demands on the load-bearing structure of the Ferris wheel gondolas.

[0004] A search revealed prior art documents related to large Ferris wheels: Patent publication CN109876459A discloses "a rotating cabin for a large Ferris wheel." This prior art document proposes a technical solution for actively controlling the rotation of the Ferris wheel cabin to maintain horizontality, but it does not specifically address the mechanical mechanism for rotation control. Furthermore, the disclosed solution uses a split design for the cabin, including its internal frame, which is unreasonable in terms of load-bearing capacity. Patent publications CN106603439A and CN108765772A involve communication and control schemes for large Ferris wheels, but neither provides specific optimization design for the Ferris wheel leveling drive control logic.

[0005] Therefore, proposing a Ferris wheel cabin rotation leveling drive mechanism and control method within this field is of great significance. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a large Ferris wheel cabin, characterized by: including a rotational leveling drive mechanism; suspension rings symmetrically and fixedly connected to both sides of the rotational leveling drive mechanism; a left cabin and a right cabin symmetrically connected to both sides of the rotational leveling drive mechanism; a base frame fixedly connected inside the rotational leveling drive mechanism, the left cabin, and the right cabin; the rotational leveling drive mechanism can drive the left cabin, the right cabin, and the base frame to rotate around the axis of the rotational leveling drive mechanism.

[0007] Furthermore, the rotary leveling drive mechanism includes a rotary support ring and a turntable bearing arranged in a coaxial pair, and also includes a drive system, which is fixedly installed between the rotary support rings; the turntable bearing is sleeved on the outside of the rotary support ring and is divided into an inner ring and an outer ring that are inner and outer rings that are interlocked and can rotate relative to each other, and the rotary support ring and the outer ring are fixedly connected. The drive system includes two independent drive units. Each drive unit consists of a drive gear, a pinion, a clutch, a reducer, and a servo motor that are connected in sequence. The drive gear of each drive unit is connected to the outer ring in a transmission. When the drive unit is working, the drive gear drives the outer ring to rotate and drives the rotating support ring to rotate.

[0008] Furthermore, the inner ring has an inner ring gear, and the drive gear meshes with the inner ring gear. The drive gear rolls planetarily inside the inner ring by meshing with the inner ring gear, and drives the outer ring to rotate by rotating the support ring.

[0009] Furthermore, the rotating support ring has a vertical annular left connecting surface and a right connecting surface. The drive system is fixedly mounted on the right connecting surface through a drive system fixing bracket. Between the left and right connecting surfaces is a horizontal annular support surface. The turntable bearing is coaxially sleeved on the outside of the horizontal annular support surface, and the outer ring is fixedly connected to the right connecting surface. The suspension ring has a vertical lug and an annular connecting surface. The annular connecting surface is fixedly connected to the inner ring, and the vertical lug is fixedly connected to the external suspension system.

[0010] Furthermore, a through groove is opened on the horizontal annular support surface of the rotating support ring, and the drive gear is placed inside the annular space of the horizontal annular support surface and exposed from the through groove. The drive gear meshes with the inner ring gear of the inner ring sleeved on the outside of the annular support surface.

[0011] Furthermore, each drive unit includes two sets of pinions, a clutch, a reducer, and a servo motor that are connected in sequence. The two pinions are symmetrically located on both sides of the drive gear and mesh with it.

[0012] A method for leveling and controlling the aforementioned large Ferris wheel cabins, characterized in that: two sets of drive units start and drive the cabins to rotate and level according to set parameters; during operation, a first-level fault and a second-level fault are set; and the two sets of drive units are logically controlled according to the occurrence of the warning status. When a Level 1 fault occurs, the clutches of both drive units are disengaged and the servo motors are braked; when a Level 2 fault occurs, the clutches of a single drive unit are disengaged and the servo motors of that drive unit are braked.

[0013] Furthermore, the warning status of the first-level fault is determined in the following manner; The first-level fault includes the occurrence of tilt adjustment fault S11 or drive system overload fault S12. The tilt adjustment fault S11 is determined by having both drive units obtain independent car tilt angle values ​​(β1, β2). When both car tilt angle values ​​(β1, β2) exceed the tilt adjustment fault threshold K11 and the duration exceeds T11, the tilt adjustment fault S11 occurs. The drive system overload fault S12 is determined by having both drive units detect drive current values ​​(I1, I2). When both drive current values ​​(I1, I2) are greater than the drive system overload threshold K12, the drive system overload fault S12 occurs.

[0014] Furthermore, the warning status of the second-level fault is determined in the following manner; Level 2 faults are determined when a single drive unit experiences a tilt sensor fault S21, a communication fault S22, or a power supply fault S23. The tilt sensor fault S21 is determined by comparing the car tilt angle values ​​(β1, β2) of the two drive units at the same time. When β1≠β2, this value is recorded as the historical car tilt angle value (β1a, β2a). After a certain interval, the updated car tilt angle values ​​(β1b, β2b) of the two drive units are obtained again. When β1a≠β1b or β2a≠β2b, the tilt sensor fault S21 is determined to have occurred.

[0015] Furthermore, the two sets of drive units start and drive the car to rotate and level according to the set parameters using the following control method; First, after receiving the Ferris wheel start-up signal, the two sets of drive units are driven to run according to the preset parameters, so that the clutches of the two sets of drive units engage the pinion gears. The two sets of drive units are independent of each other, but the servo motor drives them at the same speed. Then, the two sets of drive units acquire the car tilt angle values ​​(β1, β2) and determine whether the car tilt angle is within the first threshold range. If it exceeds the first threshold, the PID is activated to adjust the car tilt angle.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. The drive system drives the turntable bearing, which in turn rotates the rotating support ring, thereby rotating the entire car. This allows for control of the car's tilt angle, maintaining its levelness. The rotary leveling mechanism has a simple and compact structure. The weight of the entire car is supported by the suspension ring and the rotating support ring, resulting in balanced forces and a balanced torque driving the car's rotation. This ensures high car control precision and a smooth control process.

[0017] 2. The car frame adopts an integral base frame, which is conducive to the soft furnishing of the car interior. The passengers and auxiliary equipment inside the car are all supported by the integral base frame, which is more reasonable and conducive to the structural stability of the car's internal frame.

[0018] 3. The Ferris wheel cabin rotation and leveling drive mechanism proposed in this invention uses two independent drive systems to drive the cabin rotation and maintain balance. Through redundant design, the normal operation of the cabin rotation and leveling drive mechanism can be guaranteed to the maximum extent, thereby improving the safety of Ferris wheel operation.

[0019] 4. Based on the redundant design of the drive system, the control logic of the two independent drive units is specially optimized. By comparing and judging the operating parameters of the two drive systems, the faulty drive unit can be stopped in time when the Ferris wheel car or drive system fails, ensuring that the car can maintain a horizontal state and ensure safety when the Ferris wheel is running. Attached Figure Description

[0020] Figure 1 : Exploded view of the Ferris wheel cabin rotation and leveling drive mechanism in Embodiment 1; Figure 2 : Schematic diagram of the Ferris wheel cabin rotation leveling drive mechanism in Embodiment 1, omitting the single-sided rotating support ring; Figure 3 Cross-sectional view of the Ferris wheel cabin rotation and leveling drive mechanism in Example 1; Figure 4 : Figure 3 A magnified view of a portion of the image; Figure 5 : Control logic flowchart of the Ferris wheel cabin rotation and leveling drive mechanism; Figure 6 Flowchart for troubleshooting tilt sensor fault S21; Figure 7 Flowchart for troubleshooting tilt adjustment fault S11; Figure 8 Example 1: Schematic diagram of the Ferris wheel cabin structure. Detailed Implementation

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

[0022] Example 1: As Figure 8 as well as Figure 1-4 As shown, A large Ferris wheel cabin includes a rotational leveling drive mechanism. Suspension rings are symmetrically fixedly connected to both sides of the rotational leveling drive mechanism, and a left cabin and a right cabin are symmetrically connected to both sides of the mechanism. A base frame is fixedly connected inside the rotational leveling drive mechanism, the left cabin, and the right cabin. The rotational leveling drive mechanism can drive the left cabin, the right cabin, and the base frame to rotate around its axis. Because the integral base frame is fixedly connected inside the entire cabin, and the entire cabin's weight is borne by the suspension rings and the rotational leveling drive mechanism, its load-bearing structure is more rational, and the left cabin, the right cabin, and the base frame are not subjected to shear forces. The rotational leveling drive mechanism, by driving the left cabin, the right cabin, and the base frame to rotate as a whole, can maintain the cabin's level state during Ferris wheel operation.

[0023] The rotary leveling drive mechanism 1 includes a pair of coaxially arranged rotary support rings 11 and a turntable bearing 12, and also includes a drive system 14, which is fixedly installed between the rotary support rings 11; the turntable bearing 12 is sleeved on the outside of the rotary support ring 11 and is divided into an inner ring 1201 and an outer ring 1202 that are inner and outer rings that can rotate relative to each other, and the rotary support ring 11 and the outer ring 1202 are fixedly connected; The drive system 14 includes two independent drive units. Each drive unit consists of a drive gear 1401, a pinion 1402, a clutch 1403, a reducer 1404, and a servo motor 1405 connected in sequence. The drive gear 1401 of each drive unit is connected to the outer ring 1202. When the drive unit is working, the drive gear 1401 drives the outer ring 1202 to rotate and drives the rotating support ring 11 to rotate.

[0024] The Ferris wheel cabin rotation and leveling drive mechanism described above utilizes the relative rotation between the inner ring 1201 and the outer ring 1202 of the turntable bearing 12 to drive the rotation support ring 11. Once the rotation support ring 11 is fixedly connected to the Ferris wheel cabin, the tilt angle of the Ferris wheel cabin can be adjusted. The inner ring 1201 remains relatively fixed during Ferris wheel operation because it is connected to the external suspension system via the suspension ring 13. The drive gear 1401 performs planetary rolling within the inner ring 1201. Since the inner and outer rings can rotate relative to each other, they drive the outer ring 1202 to rotate under the driving force of the drive system, thus allowing the rotation support ring 11 to rotate controllably. When the rotation support ring 11 is connected to the cabin frame, it can drive the entire cabin to rotate and level, maintaining a horizontal state.

[0025] The drive system 14 is divided into two independent drive units for redundancy. Since the car's tilt angle is crucial for the safety of the Ferris wheel, if one drive unit fails, the other can still operate normally, maintaining car balance until passengers are safely delivered to the ground for repairs. The paired arrangement of the rotating support ring 11 and turntable bearing 12 also ensures compatibility with the redundant drive units. The two drive units, combined with individual rotating support rings 11 and turntable bearings 12, allow for independent adjustment of the car's tilt angle. This redundancy design ensures that the two units do not interfere with each other, significantly improving the safety of the Ferris wheel's operation.

[0026] A reasonable transmission method is that the inner ring 1201 has an inner ring gear, and the drive gear 1401 meshes with the inner ring gear. The drive gear 1401 rolls planetarily inside the inner ring 1201 by meshing with the inner ring gear, and drives the outer ring 1202 to rotate by rotating the support ring 11.

[0027] The drive gear 1401 performs planetary rolling motion within the inner ring 1201. Since the inner and outer rings can rotate relative to each other, they drive the outer ring 1202 to rotate under the driving force of the drive system, thus allowing the rotating support ring 11 to rotate controllably. When the rotating support ring 11 is connected to the car, it drives the entire car to rotate and level, maintaining a horizontal state. This structural design satisfies the requirement of driving the car to rotate and level while the entire car is supported by the rotating support ring 11. The rotation of the turntable bearing 12 and the rotation of the rotating support ring 11 create a relatively balanced driving torque on the car, resulting in high car control precision and a smoother rotation and leveling process.

[0028] Specifically, the rotating support ring 11 has a vertical annular left connecting surface 1101 and a right connecting surface 1102. The drive system 14 is fixedly mounted on the right connecting surface 1102 via a drive system fixing bracket 1406. A horizontal annular support surface 1103 is located between the left and right connecting surfaces 1101 and 1102. The turntable bearing 12 is coaxially sleeved on the outside of the horizontal annular support surface 1103, and the outer ring 1202 is fixedly connected to the right connecting surface 1102. The suspension ring 13 has a vertical lug 1301 and an annular connecting surface 1302. The annular connecting surface 1302 is fixedly connected to the inner ring 1201, and the vertical lug 1301 is fixedly connected to the external suspension system. The left connecting surface 1101, the right connecting surface 1102, and the horizontal annular support surface 1103 are integrally formed to form the rotating support ring 11. The right connecting surface 1102 and the outer ring 1202 can be connected by bolts in a manner similar to a flange connection.

[0029] It should be noted that after the Ferris wheel starts operating, the gondola rotates along with the main wheel. Without an active leveling mechanism, the outer ring 1202 rotates to some extent due to the gondola's own weight. However, this rotation results in excessive friction between the inner and outer rings due to the gondola's weight, which is insufficient to maintain the gondola's level. Furthermore, if many passengers are positioned on one side of the gondola, causing a shift in the gondola's center of gravity, its own weight cannot effectively maintain levelness. Therefore, the structural design proposed in this embodiment is essential.

[0030] Furthermore, each drive unit includes two sets of pinions 1402, a clutch 1403, a reducer 1404, and a servo motor 1405 connected in sequence. The two pinions 1402 are symmetrically located on both sides of the drive gear 1401 and mesh with it. The meshing of the two sets of pinions 1402 with the drive gear 1401 can make the output torque more balanced and increase the transmission torque of the drive gear 1401.

[0031] Furthermore, a through slot 1104 is formed on the horizontal annular support surface 1103 of the rotating support ring 11. The drive gear 1401 is placed inside the annular space of the horizontal annular support surface 1103 and protrudes from the through slot 1104. The drive gear 1401 meshes with the inner ring gear of the inner ring 1201, which is sleeved on the outside of the annular support surface 1103. Thus, the horizontal annular support surface 1103 of the rotating support ring 11 is sleeved inside the inner ring 1201, and the drive gear 1401 is located inside the horizontal annular support surface 1103. This structure is more compact.

[0032] The fixed bracket 1406 includes a fixed bracket beam 1406a and a fixed bracket sector 1406b that is perpendicularly and fixedly connected to the fixed bracket beam 1406a. The fixed bracket sector 1406b is fixedly connected to the right side connecting surface 1102 of the rotating support ring 11. The fixed bracket sector 1406b has a shaft hole through which the drive shaft of the reducer 1404 passes. The clutch 1403 and the pinion 1402, as well as the reducer 1404 and the servo motor 1405, are respectively placed on both sides of the fixed bracket sector 1406b. The drive gear 1401 is fixed on the fixed bracket sector 1406b through a rotating shaft and is on the same side as the pinion 1402.

[0033] Example 2 provides the rotational leveling control method of Example 1, which can be found in [reference]. Figures 5-7 .

[0034] When the Ferris wheel starts running, the two sets of drive units start according to the set parameters and drive the car to rotate and level. During operation, a first-level fault and a second-level fault are set, and the two sets of drive units are logically controlled according to the occurrence of the warning status. When a first-level fault occurs, the clutch 1403 of both sets of drive units is disconnected and the servo motor 1405 is braked. When a second-level fault occurs, the clutch 1403 of a single set of drive units is disconnected and the servo motor 1405 of that set of drive units is braked.

[0035] In this embodiment, both drive units independently control and drive the car leveling, but each communicates with the Ferris wheel's central control unit. All parameters of both drive units are obtained through communication with the Ferris wheel's central control unit. Simultaneously, both drive units also send the acquired car operating parameters to the central control unit for calculation and determination.

[0036] The warning status of the first-level fault is determined in the following way: The first-level fault includes the occurrence of tilt adjustment fault S11 or drive system overload fault S12. The tilt adjustment fault S11 is determined by having both drive units obtain independent car tilt angle values ​​(β1, β2). When both car tilt angle values ​​(β1, β2) exceed the tilt adjustment fault threshold K11 and the duration exceeds T11, the tilt adjustment fault S11 occurs. The drive system overload fault S12 is determined by having both drive units detect drive current values ​​(I1, I2). When both drive current values ​​(I1, I2) are greater than the drive system overload threshold K12, the drive system overload fault S12 occurs.

[0037] In actual operation, a Level 1 fault is a relatively serious safety warning fault. At this time, it means that the mechanical transmission of the Ferris wheel as a whole or the cabin has failed, which poses a great threat to the safety of the passengers. The operation of the two sets of drive units should be stopped immediately, and the speed of the Ferris wheel should be reduced so that the cabin can maintain its level as much as possible by its own weight when the drive unit is not involved. At the same time, the passengers in the cabin should also maintain the center of the cabin by standing in a reasonable position until the faulty cabin takes the passengers to the ground platform.

[0038] The car tilt angle values ​​(β1, β2) are obtained by two tilt sensors installed inside the car, each controlled by a separate set of drive units. Under normal circumstances, the first car tilt angle value β1 should be equal to the second car tilt angle value β2. When everything is normal, the car leveling status can be reflected by the car tilt angle values ​​(β1, β2). When a serious mechanical failure occurs, such as mechanical jamming of the turntable bearing (12) in the drive unit or insufficient lubrication leading to a significant increase in resistance, no matter how the drive unit is controlled to level the car, the corresponding effect cannot be achieved. As the Ferris wheel rotates, the car tilt angle tends to increase. When the tilt angle adjustment fault threshold K11 (±2° in this embodiment) is exceeded, a first-level fault should not be reported immediately. While continuously acquiring real-time car tilt angle values ​​(β1, β2), if after a duration T11 (typically 1 minute) the car tilt angle values ​​(β1, β2) still exceed the tilt angle adjustment fault threshold K11, it is considered that the car level cannot be adjusted normally, and a Level 1 fault is reported. Similarly, when a serious mechanical fault occurs, it is often accompanied by drive unit overload. When both sets of drive units detect drive current values ​​(I1, I2), and both sets of drive current values ​​(I1, I2) are greater than the drive system overload threshold K12, a drive system overload fault S12 occurs, thus reporting a Level 1 fault.

[0039] The warning status of the secondary fault is determined in the following way: The secondary fault is determined when a tilt sensor fault S21, a communication fault S22, or a power supply fault S23 occurs in a single drive unit; The tilt sensor fault S21 is determined by comparing the car tilt angle values ​​(β1, β2) of the two drive units at the same time. When β1≠β2, this value is recorded as the historical car tilt angle value (β1a, β2a). After a certain interval, the updated car tilt angle values ​​(β1b, β2b) of the two drive units are obtained again. When β1a≠β1b or β2a≠β2b, the tilt sensor fault S21 is determined to have occurred.

[0040] In this embodiment, communication fault S22 is determined when a communication failure occurs between the central control unit and the individual drive units, such as a delay or interruption. Power supply fault S23 is determined when the power supply electrical parameters of a single drive unit are abnormal, indicating a power supply fault. Secondary faults also include inverter or motor faults in a single drive unit; a secondary fault is determined when the inverter or motor in any drive unit fails.

[0041] Level 2 faults are less severe than Level 1 faults. They are generally electrical faults in a single drive unit and do not affect the leveling of the other drive unit. Since both drive units control independent tilt sensors, the fault status of a single drive unit sensor can be determined by comparing the tilt sensors of the two drive units. When β1≠β2, one sensor should be considered faulty (because normally they should be consistent). The historical tilt angle values ​​(β1a, β2a) of the car will be recorded. After a certain interval, the tilt sensor values ​​will be updated; the sensor whose value remains unchanged is the faulty sensor. After identifying the faulty sensor, the drive unit in that group will be shut down, and a Level 2 fault will be reported. Similarly, communication fault S22 is determined based on the communication status between the two drive units and the main control unit, while power supply fault S23 is determined when the power supply to a single drive unit fails.

[0042] The two sets of drive units start according to the set parameters and drive the car to rotate and level, using the following control method; First, after receiving the Ferris wheel start-up signal, the two sets of drive units are driven to run according to the preset parameters, so that the clutches of the two sets of drive units engage the pinion gears. The two sets of drive units are independent of each other, but the servo motor drives them at the same speed. Then, the two sets of drive units acquire the car tilt angle values ​​(β1, β2) and determine whether the car tilt angle is within the first threshold range. If it exceeds the first threshold, the PID is activated to adjust the car tilt angle.

[0043] In this embodiment, the first threshold range is ±1°. The Ferris wheel can operate at a preset speed of 0.25 m / s. The adjustment process can adopt the existing PID closed-loop control method, adjusting in real time as the Ferris wheel operates. In this embodiment, the first threshold is a horizontal ±1°. Within the first threshold range, the operation of the Ferris wheel is considered normal. If the adjustment stabilizes within the first threshold range, it indicates that the Ferris wheel operation has returned to normal.

[0044] A three-level fault system is also set during operation. A level-three fault is identified when a PIS power supply failure or an air conditioning power supply failure occurs, at which point a warning signal is issued. Level-three faults are relatively minor, and the car should not be stopped during this time; instead, corresponding troubleshooting and repairs can be carried out during the maintenance period.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for leveling and controlling the cabins of a large Ferris wheel, characterized in that: The large Ferris wheel cabin includes a rotation leveling drive mechanism (1), with suspension rings (13) symmetrically fixedly connected on both sides of the rotation leveling drive mechanism (1), and a left cabin (3) and a right cabin (4) symmetrically connected on both sides of the rotation leveling drive mechanism (1); a base frame (2) is fixedly connected inside the rotation leveling drive mechanism (1), the left cabin (3) and the right cabin (4); the rotation leveling drive mechanism (1) can drive the left cabin (3), the right cabin (4) and the base frame (2) to rotate around the axis of the rotation leveling drive mechanism (1); The rotary leveling drive mechanism (1) includes a rotary support ring (11) and a turntable bearing (12) arranged in a coaxial pair, and also includes a drive system (14). The drive system (14) is fixedly installed between the rotary support rings (11). The turntable bearing (12) is sleeved on the outside of the rotary support ring (11) and is divided into an inner ring (1201) and an outer ring (1202) that are inner and outer rings that can rotate relative to each other. The rotary support ring (11) and the outer ring (1202) are fixedly connected. The drive system (14) includes two independent drive units. Each drive unit consists of a drive gear (1401), a pinion (1402), a clutch (1403), a reducer (1404), and a servo motor (1405) that are connected in sequence. The drive gear (1401) of each drive unit is connected to the outer ring (1202) in a transmission connection. When the drive unit is working, the drive gear (1401) drives the outer ring (1202) to rotate and drives the rotary support ring (11) to rotate. The two sets of drive units start and drive the car to rotate and level according to the set parameters. During the operation, first-level faults and second-level faults are set, and the two sets of drive units are logically controlled according to the occurrence of the warning status. When a Level 1 fault occurs, the clutches (1403) of the two drive units are disconnected and the servo motor (1405) is braked. When a secondary fault occurs, the clutch (1403) of the single drive unit is disconnected and the servo motor (1405) of the drive unit is braked. The warning status of the first-level fault is determined in the following manner; The first-level fault includes the occurrence of tilt adjustment fault S11 or drive system overload fault S12. The tilt adjustment fault S11 is determined by having both drive units obtain independent car tilt angle values ​​(β1, β2). When both car tilt angle values ​​(β1, β2) exceed the tilt adjustment fault threshold K11 and the duration exceeds T11, the tilt adjustment fault S11 occurs. The drive system overload fault S12 is determined by having both drive units detect drive current values ​​(I1, I2). When both drive current values ​​(I1, I2) are greater than the drive system overload threshold K12, the drive system overload fault S12 occurs.

2. The method for leveling and controlling the gondola of a large Ferris wheel as described in claim 1, characterized in that: The warning status of the level 2 fault is determined in the following manner; Level 2 faults are determined when a single drive unit experiences a tilt sensor fault S21, a communication fault S22, or a power supply fault S23. The tilt sensor fault S21 is determined by comparing the car tilt angle values ​​(β1, β2) of the two drive units at the same time. When β1≠β2, this value is recorded as the historical car tilt angle value (β1a, β2a). After a certain interval, the updated car tilt angle values ​​(β1b, β2b) of the two drive units are obtained again. When β1a≠β1b or β2a≠β2b, the tilt sensor fault S21 is determined to have occurred.

3. The method for leveling and controlling the gondola of a large Ferris wheel as described in claim 2, characterized in that: The two sets of drive units start according to the set parameters and drive the car to rotate and level, using the following control method; First, after receiving the Ferris wheel start-up signal, the two sets of drive units are driven to run according to the preset parameters, so that the clutches of the two sets of drive units engage the pinion gears. The two sets of drive units are independent of each other, but the servo motor drives them at the same speed. Then, the two sets of drive units acquire the car tilt angle values ​​(β1, β2) and determine whether the car tilt angle is within the first threshold range. If it exceeds the first threshold, the PID is activated to adjust the car tilt angle.

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