A turning gear

Abstract

This invention relates to the field of self-inspection technology before starting large rotating equipment, and particularly to self-inspection tooling for equipment such as wind turbines, specifically a turning gear tooling. It includes a frame with several drive motors mounted on it. The drive motors engage with a rotating internal gear ring via a transmission structure, driving the internal gear ring to rotate. The internal gear ring then drives a turning gear sleeve, used for docking with rotating shaft components, to rotate coaxially. This invention uses drive motors to rotate the internal gear ring, which in turn rotates the turning gear sleeve, thus achieving docking and turning operations. The overall tooling is smaller and more streamlined, allowing for flexible installation within the nacelle of a wind turbine, making it more convenient to use and providing more precise control.

Description

Technical Field

[0001] This invention relates to the field of self-inspection technology before starting large rotating equipment, and particularly to self-inspection fixtures for equipment such as wind turbines, specifically a turning fixture. Background Technology

[0002] Before starting large rotating equipment, the rotating structure needs to be inspected to ensure it meets the conditions for normal operation. Especially for wind turbines, a turning operation is required before startup. This involves using a turning fixture to rotate the wind turbine rotor several times. When the rotor can rotate without obstruction, the wind turbine is in normal condition and can be started and operated. This avoids equipment damage or dangerous accidents caused by direct startup if there is structural interference within the wind turbine. Furthermore, during the installation of large rotating equipment, such as wind turbine blades, keeping the blades vertically downwards is the optimal installation posture. However, often after the first blade is installed, the rotor deflects under the weight of the blade, causing the next blade to be installed in a horizontal or upward position, creating significant difficulties for subsequent installations. Twisting the rotor with external force presents challenges such as high manual labor intensity, easy damage to the rotor structure, and difficulty in controlling the twisting precision, further increasing the difficulty of wind turbine blade operation and failing to effectively improve efficiency.

[0003] There are technologies that use turning gears to connect and twist the rotor of a wind turbine, keeping it at a set angle to facilitate operations such as blade installation. Existing turning gears typically control rotation through several hydraulic drive mechanisms, which has the following shortcomings:

[0004] 1. Due to the size limitations of the wind turbine nacelle, the conventional hydraulically designed turning gear tooling is too large and heavy, making it difficult to install inside the nacelle. In most cases, it cannot meet the usage requirements and may even require modification and redesign of the turning gear tooling structure according to the actual environment, resulting in low practicality and convenience.

[0005] 2. The control precision of the hydraulic drive structure is not high, making it difficult to quickly and accurately position the vehicle during turning, which is not conducive to improving work efficiency.

[0006] It is evident that the existing turning gear tooling still has room for improvement. Optimization is needed to simplify its structure, making it more suitable for the limited space of wind turbine nacelles and improving ease of use. Simultaneously, the control precision of the turning gear tooling needs to be improved to facilitate rapid rotation of the shaft to a specified angle and positioning, thereby increasing the efficiency of the turning operation. Therefore, a more reasonable technical solution is needed to address the technical problems existing in the current technology. Summary of the Invention

[0007] To overcome at least one of the aforementioned defects, this invention proposes a turning gear fixture that reduces the overall size of the turning gear fixture by adjusting the drive structure and transmission structure, thereby improving ease of use and enhancing the precision of turning gear control.

[0008] To achieve the above objectives, the turning gear tooling disclosed in this invention can adopt the following technical solution:

[0009] A turning gear tooling includes a frame on which a plurality of drive motors are mounted. The drive motors cooperate with a rotating internal gear ring through a transmission structure and drive the rotating internal gear ring to rotate. The rotating internal gear ring drives a turning gear sleeve for docking with a rotating shaft to rotate coaxially.

[0010] The aforementioned turning gear fixture provides driving force through a drive motor and drives the rotating internal gear ring to rotate through a transmission structure. By adjusting the transmission structure to be inside the rotating internal gear ring, the overall volume is reduced. Furthermore, the drive motor can achieve precise angle deflection through electronic control, thereby achieving precise deflection control and improving the accuracy of the turning operation. The turning sleeve is used to connect the rotating shaft during the turning operation, playing a role in docking and synchronous rotation.

[0011] Furthermore, the rotating internal gear ring used in this invention serves as an intermediate rotating component. During rotation, it transmits rotational force to the turning gear sleeve, thereby realizing the turning operation. The specific transmission structure can take various forms and is not limited to one. Here, we optimize and propose one feasible option: a transmission sleeve is provided on the rotating internal gear ring. The transmission sleeve rotates synchronously with the rotating internal gear ring and is connected to the turning gear sleeve, driving the turning gear sleeve to rotate synchronously. With this solution, the transmission sleeve can adopt a disc-shaped structure, with its edge connected and fixed to the rotating internal gear ring and rotating coaxially. The center of the rotating sleeve coincides with and is connected to the center of the turning gear sleeve, then rotates coaxially.

[0012] Furthermore, when the transmission sleeve connects to the turning gear sleeve, the connection structure can be configured in various ways and is not limited to a single form. To facilitate fine-tuning of the turning gear sleeve to connect to the rotating shaft, an optimization is proposed, and one feasible option is suggested: the transmission sleeve is provided with a central channel hole, the turning gear sleeve is positioned at the central channel hole, and the turning gear sleeve is axially controlled by an adjusting component to move. With this solution, after aligning the turning gear sleeve with the rotating shaft, docking and fixing can be achieved by axially moving the turning gear sleeve. This operation is simpler and easier, avoiding the need to move the entire turning gear fixture to achieve docking, thereby improving the convenience of the docking operation.

[0013] Furthermore, in this invention, the adjusting assembly can extend and retract the turning sleeve. Its specific structure is not uniquely limited; an optimized and feasible option is proposed here: the adjusting assembly includes an adjusting seat mounted on the frame. The adjusting seat has several adjusting shafts extending axially along the turning sleeve and used to move the turning sleeve. The abutting end of each adjusting shaft is connected to a linkage seat on the outer surface of the turning sleeve. When the adjusting shaft moves in the forward direction, it pushes the turning sleeve forward and extends it from the central channel hole; when the adjusting shaft moves in the reverse direction, it pulls the turning sleeve back and retracts it into the central channel hole. With this scheme, the number of adjusting seats is several and can be spaced circumferentially along the turning sleeve. The multiple adjusting shafts on the adjusting seat can be threaded together, allowing for extension and retraction adjustment by rotating the adjusting shafts, thereby realizing the pushing and pulling back of the adjusting seat.

[0014] Furthermore, the rotating sleeve structure used in this invention is not unique. Here, we propose an optimized and feasible option: the rotating sleeve includes a cylindrical body. The outer surface of the cylindrical body and the central channel hole are engaged by axial retaining strips and axial grooves. The axial retaining strips and axial grooves are used to enable the cylindrical body and the transmission sleeve to rotate synchronously and simultaneously undergo axial displacement. With this design, the cylindrical body is a cylindrical structure. Axial retaining strips can be provided on the outer circumferential wall of the cylindrical body. The axial retaining strips can increase the thickness of the cylindrical body, thereby improving its strength. Axial grooves are provided on the central channel hole, corresponding one-to-one with the axial retaining strips, thus achieving synchronous engagement of circumferential rotation without affecting the axial expansion and contraction displacement of the rotating sleeve.

[0015] Furthermore, to better connect the rotating shaft, an optimization is proposed, and one feasible option is suggested: the front end of the turning sleeve is provided with several positioning end shafts for docking with the rotating shaft components. With this solution, the number of positioning end shafts is several and they are distributed at intervals on the circumference of the turning sleeve.

[0016] Furthermore, in this invention, the rotation of the internal gear ring and the rotation of the turning sleeve are both supported. The support structure can adopt various schemes; for example, support wheels can be used in some schemes, and rollers can be used in others. Here, we optimize and propose one feasible option: The frame is provided with a support member, which has an outer support slot for engaging the internal gear ring and an inner support slot for engaging the turning sleeve. The internal gear ring is coaxially disposed in the outer support slot, and a support ball structure is provided between the outer circumferential surface of the internal gear ring and the inner circumferential surface of the outer support slot. The transmission sleeve is provided with an inner support member that engages with the inner support slot. The inner support member slides against the outer surface of the turning sleeve, and a support ball structure is provided between the inner support member and the inner circumferential surface of the inner support slot. With this scheme, the outer and inner support slots are coaxially disposed.

[0017] Preferably, in order to better maintain the consistency of transmission and eliminate the transmission gap when multiple drive motors are driven by the rotating internal gear ring, the diameter of the support ball can be appropriately reduced so that the support ball has a certain degree of play between the inner circumferential surface of the rotating internal gear ring and the outer support hole groove. When a single drive motor starts and meshes with the rotating internal gear ring through the gear, the rotating internal gear ring will not be driven because it floats outward. Only when multiple drive motors start at the same time and mesh with the rotating internal gear ring, the float cancels each other out, so that the transmission can be transmitted to the rotating internal gear ring.

[0018] Preferably, in another embodiment, the drive motor meshes with the rotating internal gear ring through a transmission structure. A flexible damping structure or buffer structure can be set at the gear shaft of the transmission structure. When a single drive motor starts and the single transmission structure engages with the rotating gear ring, the gear shaft of the transmission structure is subjected to force and transmitted to the rotating internal gear ring. Due to excessive resistance, the damping structure or buffer structure will be compressed and unable to drive the rotating internal gear ring. Only when multiple drive motors are started can the damping structure or buffer structure reach balance, thereby enabling the transmission structure to drive the rotating internal gear ring to rotate.

[0019] Furthermore, to lock and position the turning sleeve so that it stops rotating after reaching a designated position, an optimization is proposed, and one feasible option is suggested: the turning sleeve is equipped with a braking assembly, which includes a brake block for extending or shortening and pressing against an external structure to achieve braking and locking. With this solution, the brake block can be extended or shortened by an electromagnetic controller, or it can be extended and braked by other electronic, pneumatic, or hydraulic control methods.

[0020] Furthermore, when connecting the turning sleeve and the rotating shaft, alignment is achieved synchronously using the positioning settings of the frame. Here, an optimization is proposed, and one feasible option is suggested: the frame is equipped with several positioning pin assemblies to assist in aligning the rotating shaft for connection. In this scheme, the positioning pin assembly includes pins extending axially along the turning sleeve, with several pins located at multiple positions on the frame. The frame is equipped with pin holes and fixing flanges to secure the pins.

[0021] Furthermore, to ensure the integrity of the overall structure, reduce damage from impacts to components, and enhance operational safety, an optimization is proposed, and one feasible option is suggested: The frame is equipped with a protective cover to shield the drive motor, forming a cavity between the cover and the frame, and the frame is equipped with a fan communicating with the cavity; the turning gear is also connected to a control cabinet, which is electrically connected to at least the drive motor and the fan and used to control their start and stop. With this solution, a transparent observation window structure can also be provided on the cover, or the cover can be made of transparent material, thereby facilitating external observation and aiding in inspection and maintenance.

[0022] Compared with the prior art, some of the beneficial effects of the technical solution disclosed in this invention include:

[0023] This invention uses a drive motor to rotate the internal gear ring, which in turn rotates the turning sleeve, thereby realizing the docking turning operation. The overall tooling is smaller in size and more streamlined in structure. It can be flexibly installed in the nacelle of the wind turbine, making it more convenient to use and more precise to control. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the turning gear tool.

[0026] Figure 2 This is an exploded view of the turning gear tooling.

[0027] Figure 3 This is a rear view structural diagram of the turning gear tooling.

[0028] Figure 4 This is a schematic diagram of the drive motor and transmission structure.

[0029] Figure 5 This is a schematic diagram of the overall structure of the turning sleeve.

[0030] Figure 6 This is a schematic diagram of the support components on the frame.

[0031] Figure 7 This is a schematic diagram of the adjustment component.

[0032] Figure 8 This is a schematic diagram of the braking assembly.

[0033] In the above attached figures, the meanings of each number are as follows:

[0034] 1. Frame; 101. Outer support slot; 102. Inner support slot; 2. Protective cover; 3. Fan; 4. Support component; 5. Rotary internal gear ring; 6. Transmission sleeve; 601. Central channel hole; 602. Axial slot; 7. Turning sleeve; 701. Cylinder body; 702. Axial retaining strip; 703. Positioning end shaft; 704. Linkage seat; 8. Positioning pin assembly; 9. Control cabinet; 10. Transmission structure; 1001. Primary transmission shaft; 1002. Secondary transmission shaft; 11. Braking assembly; 1101. Brake block; 12. Adjustment assembly; 1201. Adjustment seat; 1202. Adjustment shaft; 13. Inner support component; 14. Drive motor. Detailed Implementation

[0035] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0036] To address the shortcomings of existing turning gear fixtures, such as large size, lack of flexibility and convenience in setup, and low control precision during operation, the following embodiments are optimized to overcome these deficiencies.

[0037] Example

[0038] like Figures 1 to 8 As shown, this embodiment provides a turning gear tooling, including a frame 1, on which a plurality of drive motors 14 are provided. The drive motors 14 cooperate with the rotating internal gear ring 5 through the transmission structure 10 and drive the rotating internal gear ring 5 to rotate. The rotating internal gear ring 5 drives a turning gear sleeve 7 used to dock with the rotating shaft to rotate coaxially.

[0039] Preferably, the frame 1 is a polygonal metal frame or a gate-shaped frame, wherein the starter motor is located on one side of the frame 1, the rotary internal gear ring 5 and the turning sleeve 7 are located on the other side of the frame 1, and the transmission structure 10 extends from one side of the frame 1 to the other side to achieve coordinated transmission.

[0040] The turning gear fixture disclosed in this embodiment provides driving force through the drive motor 14, and drives the rotating internal gear ring 5 to rotate through the transmission structure 10 in cooperation with the rotating internal gear ring 5. By adjusting the transmission structure 10 to the inside of the rotating internal gear ring 5, the overall volume occupied is reduced. Furthermore, the drive motor 14 can achieve precise angle deflection through electronic control, thereby achieving precise deflection control and improving the accuracy of the turning gear operation. The turning gear sleeve 7 is used to connect the rotating shaft during the turning gear operation, playing the role of docking and synchronous rotation.

[0041] In this embodiment, the rotating internal gear ring 5 serves as an intermediate rotating component. During rotation, it transmits rotational force to the turning sleeve 7, thereby achieving the turning operation. The specific transmission structure can take various forms and is not limited to a single one. This embodiment optimizes and adopts one feasible option: such as... Figure 2As shown, a transmission sleeve 6 is provided on the rotating internal gear ring 5. The transmission sleeve 6 rotates synchronously with the rotating internal gear ring 5, and the transmission sleeve 6 is connected to the turning gear sleeve 7 and drives the turning gear sleeve 7 to rotate synchronously. When this scheme is adopted, the transmission sleeve 6 can adopt a disc-shaped structure, with its edge connected and fixed to the rotating internal gear ring 5 and rotating coaxially. The center of the rotating sleeve coincides with the center of the turning gear sleeve 7 and rotates coaxially after connection.

[0042] Preferably, the outer diameter of the disc-shaped transmission sleeve 6 is the same as the outer diameter of the rotary internal gear ring 5, and several connecting bolts are provided along the edges of the two for fixed fit.

[0043] When the transmission sleeve 6 connects to the turning gear sleeve 7, the connection structure can be configured in various ways and is not limited to a single form. To facilitate fine-tuning of the turning gear sleeve 7 to connect to the rotating shaft, this embodiment optimizes the connection and adopts one feasible option: such as... Figure 1 , Figure 2 As shown, the transmission sleeve 6 is provided with a central channel hole 601, and the turning sleeve 7 is disposed at the central channel hole 601 and the turning sleeve 7 is controlled to move axially by the adjusting component 12. With this scheme, after aligning the turning sleeve 7 with the rotating shaft, docking and fixing can be achieved by axially moving the turning sleeve 7. This operation is simpler and easier, avoiding the need to move the entire turning fixture to achieve docking, thereby improving the convenience of the docking operation.

[0044] Preferably, the thickness of the transmission sleeve 6 gradually increases from the edge to the center.

[0045] In this embodiment, the adjusting component 12 can extend and retract the rotating shaft sleeve 7. Its specific structure is not uniquely limited; this embodiment optimizes the design and adopts one feasible option: such as... Figure 7 As shown, the adjustment assembly 12 includes an adjustment seat 1201 mounted on the frame 1. The adjustment seat 1201 has several adjustment shafts 1202 extending axially along the turning sleeve 7 and used to move the turning sleeve. The abutting end of each adjustment shaft 1202 is connected to a linkage seat 704 on the outer surface of the turning sleeve 7. When the adjustment shaft 1202 moves in the forward direction, it pushes the turning sleeve 7 forward and extends it out of the central channel hole 601. When the adjustment shaft 1202 moves in the reverse direction, it pulls the turning sleeve 7 back and retracts it into the central channel hole 601. With this design, the number of adjustment seats 1201 can be several and spaced along the circumference of the turning sleeve 7. The multiple adjustment shafts 1202 on the adjustment seat 1201 can be threaded together, allowing for telescopic adjustment by rotating the adjustment shafts 1202, thus enabling the pushing and pulling of the adjustment seat 1201.

[0046] Preferably, the adjusting seat 1201 is connected and fixed to the frame 1 by bolts, and the adjusting seat 1201 is provided with bearing holes and connected to the adjusting shaft 1202 through bearings; the adjusting shaft 1202 is provided with threads, and the linkage seat 704 is provided with threaded holes corresponding to the adjusting shaft 1202. After the adjusting shaft 1202 and the linkage seat 704 are threadedly engaged, when the adjusting shaft 1202 rotates in the forward or reverse direction, the linkage seat 704 drives the turning sleeve 7 to move forward or backward. The linkage seat 704 can be integrally formed with the turning sleeve 7, or fixedly connected by a connector, or fixed by welding.

[0047] The structure of the turning sleeve 7 used in this embodiment is not unique and limited. This embodiment optimizes and adopts one feasible option: such as Figure 5 As shown, the turning sleeve 7 includes a cylindrical body 701. The outer surface of the cylindrical body 701 and the central channel hole 601 are limited and engaged by an axial retaining strip 702 and an axial retaining groove 602. The axial retaining strip 702 and the axial retaining groove 602 are used to enable the cylindrical body 701 and the transmission sleeve 6 to rotate synchronously and simultaneously undergo axial displacement. With this design, the cylindrical body 701 has a cylindrical structure. An axial retaining strip 702 can be provided on the outer circumferential wall of the cylindrical body 701. The axial retaining strip 702 can increase the thickness of the cylindrical body 701, thereby improving the strength of the cylindrical body 701. An axial retaining groove 602 is provided on the central channel hole 601 and corresponds one-to-one with the axial retaining strip 702, thereby achieving synchronous engagement of circumferential rotation without affecting the axial extension and retraction displacement of the turning sleeve 7.

[0048] To better connect the rotating shaft, this embodiment is optimized and adopts one of the feasible options: such as Figure 5 As shown, the front end of the turning sleeve 7 is provided with a plurality of positioning end shafts 703 for engaging with rotating shaft components. When this scheme is adopted, the number of positioning end shafts 703 is several and they are distributed at intervals on the circumference of the turning sleeve 7.

[0049] Preferably, the positioning end shaft 703 is integrally formed with the cylinder body 701.

[0050] In this embodiment, both the rotation of the rotary internal gear ring 5 and the rotation of the turning sleeve 7 are supported. The support structure can adopt various schemes; for example, in some schemes, a support wheel can be used, and in others, a roller shaft can be used. This embodiment optimizes and adopts one feasible option: such as... Figure 2As shown, the frame 1 is provided with a support member 4, which has an outer support slot 101 for engaging with a rotating internal gear ring 5 and an inner support slot 102 for engaging with a turning sleeve 7. The rotating internal gear ring 5 is coaxially disposed in the outer support slot 101, and a support ball structure is provided between the outer circumferential surface of the rotating internal gear ring 5 and the inner circumferential surface of the outer support slot 101. The transmission sleeve is provided with an inner support member 13 that engages with the inner support slot 102. The inner support member 13 slides with the outer surface of the turning sleeve 7, and a support ball structure is provided between the inner support member 13 and the inner circumferential surface of the inner support slot 102. With this scheme, the outer support slot 101 and the inner support slot 102 are coaxially disposed.

[0051] Preferably, in this embodiment, the support member 4 is a ring structure, which is sleeved on the turning sleeve 7 and cooperates with the inner support hole groove 102.

[0052] Preferably, to better maintain transmission consistency and eliminate transmission gaps when multiple drive motors 14 are driving the rotary internal gear ring 5, the diameter of the support ball can be appropriately reduced. This allows the support ball to have a certain degree of play between the inner circumferential surface of the rotary internal gear ring 5 and the outer support groove 101. When a single drive motor 14 starts and meshes with the rotary internal gear ring 5 through gears, the rotary internal gear ring 5 will float outwards and cannot be driven. Only when multiple drive motors 14 start simultaneously and mesh with the rotary internal gear ring 5 will the floats cancel each other out, allowing transmission to reach the rotary internal gear ring 5. Simultaneously, the opposing surfaces of the rotary internal gear ring 5 and the outer support groove 101 are provided with annular grooves to accommodate the support ball. When the rotary internal gear ring 5 rotates relative to the outer support groove 101, the support ball rolls within the annular groove.

[0053] Preferred, such as Figure 4As shown, in another embodiment, the drive motor 14 meshes with the rotating internal gear ring 5 through the transmission structure 10. A flexible damping or buffering structure can be provided at the gear shaft of the transmission structure 10. When a single drive motor 14 starts and engages the single transmission structure 10 with the rotating gear ring, the gear shaft of the transmission structure 10 is subjected to force and transmitted to the rotating internal gear ring 5. Due to excessive resistance, the damping or buffering structure is compressed and cannot drive the rotating internal gear ring 5. Only when multiple drive motors 14 are started can the damping or buffering structure reach balance, thereby enabling the transmission structure 10 to drive the rotating internal gear ring 5 to rotate. At the same time, the transmission structure 10 adopts a gear transmission structure 10, including several stages of transmission shafts. Gear pairs are set between the transmission shafts to achieve meshing transmission. The final output shaft is equipped with an output gear that meshes with the rotating internal gear ring 5 for transmission. In this scheme, the transmission structure 10 can be a multi-stage transmission, including at least a first-stage transmission shaft 1001 and a second-stage transmission shaft 1002. Both the first-stage transmission shaft 1001 and the second-stage transmission shaft 1002 are equipped with transmission gears, and the transmission structure 10 serves as a speed reduction structure.

[0054] To lock and position the rotating sleeve 7, stopping its rotation after reaching a designated position, optimization is performed here, and one feasible option is proposed: [e.g., ...] Figure 8 As shown, the turning sleeve 7 is equipped with a braking assembly 11, which includes a brake block 1101 for extending or shortening and for pressing against an external structure to achieve braking lock. With this solution, the brake block 1101 can be extended or shortened by an electromagnetic controller, or it can be extended and shortened by other electronic, pneumatic or hydraulic control methods.

[0055] Preferably, the brake block 1101 comprises a rubber block.

[0056] When aligning the rotating sleeve 7 with the shaft, the positioning settings of the frame are used to achieve synchronous alignment. This embodiment optimizes this process and adopts one feasible option: such as... Figure 1 As shown, the frame 1 is equipped with several positioning pin assemblies 8 to assist in aligning the rotating shaft for connection. In this configuration, the positioning pin assembly 8 includes pins extending axially along the turning sleeve 7, with several pins located at multiple positions on the frame. The frame is equipped with pin holes and fixing flanges to secure the pins.

[0057] To ensure the integrity of the overall structure, reduce damage from impacts to components, and enhance safety during use, this embodiment is optimized and adopts one of the feasible options: such as... Figure 3As shown, the frame 1 is equipped with a protective cover 2 to cover the drive motor 14, forming a cavity between the protective cover 2 and the frame 1, and the frame 1 is equipped with a fan 3 communicating with the cavity; the turning gear is also connected to a control cabinet 9, which is electrically connected to at least the drive motor 14 and the fan 3 and is used to control their start and stop. With this design, a transparent observation window structure can also be provided on the protective cover 2, or the protective cover 2 can be made of transparent material, thereby facilitating external observation and aiding in inspection and maintenance.

[0058] The above are the embodiments listed in this example. However, this example is not limited to the optional embodiments described above. Those skilled in the art can arbitrarily combine the above methods to obtain other various embodiments. Anyone can derive other various forms of embodiments under the guidance of this example. The above specific embodiments should not be construed as limiting the scope of protection of this example. The scope of protection of this example should be defined in the claims.

Claims

1. A turning gear tool, characterized by: The rack (1) is provided with several driving motors (14), the driving motor (14) is matched with the rotating inner gear ring (5) through the transmission structure (10) and drives the rotating inner gear ring (5) to rotate, the rotating inner gear ring (5) drives the turning gear sleeve (7) coaxially rotating to connect the rotating shaft piece; The rotating inner gear ring (5) is provided with a transmission sleeve (6), the transmission sleeve (6) rotates synchronously with the rotating inner gear ring (5), and the transmission sleeve (6) is connected with the turning gear sleeve (7) and drives the turning gear sleeve (7) to rotate synchronously; The rack (1) is provided with a supporting piece (4), the supporting piece (4) is provided with an outer supporting hole groove (101) matched with the rotating inner gear ring (5) and an inner supporting hole groove (102) matched with the turning gear sleeve (7); the rotating inner gear ring (5) is coaxially arranged in the outer supporting hole groove (101), and a supporting ball structure is arranged between the outer circumferential surface of the rotating inner gear ring (5) and the inner circumferential surface of the outer supporting hole groove (101); the transmission sleeve is provided with an inner supporting piece (13) matched with the inner supporting hole groove (102), the inner supporting piece (13) is slidingly matched with the outer surface of the turning gear sleeve (7), and a supporting ball structure is arranged between the inner supporting piece (13) and the inner circumferential surface of the inner supporting hole groove (102); The gear shaft of the transmission structure (10) is provided with a flexible damping structure or a buffer structure, when a single driving motor (14) is started to make a single transmission structure (10) match the rotating gear ring, the gear shaft of the transmission structure (10) is stressed and transmitted to the rotating inner gear ring (5) to compress the damping structure or the buffer structure and cannot drive the rotating inner gear ring (5), when the multiple driving motors (14) are all started to make the damping structure or the buffer structure balanced, so that the transmission structure (10) drives the rotating inner gear ring (5) to rotate.

2. A turning gear assembly according to claim 1, wherein: The transmission sleeve (6) is provided with a central passage hole (601), the turning gear sleeve (7) is arranged at the central passage hole (601) and is controlled to move in the axial direction by the adjusting assembly (12).

3. A turning gear assembly according to claim 2, wherein: The adjusting assembly (12) comprises an adjusting seat (1201) arranged on the rack (1), a plurality of adjusting shafts (1202) extending in the axial direction of the turning gear sleeve (7) and used for moving the turning gear sleeve are arranged on the adjusting seat (1201), the adjusting shaft (1202) is connected and matched with the linkage seat (704) of the outer surface of the turning gear sleeve (7), when the adjusting shaft (1202) moves forward to push the turning gear sleeve (7) forward and extend out of the central passage hole (601), when the adjusting shaft (1202) moves reversely to pull the turning gear sleeve (7) back and retreat into the central passage hole (601).

4. A turning gear assembly according to claim 2 or 3, wherein: The turning gear sleeve (7) comprises a cylinder body (701), the outer surface of the cylinder body (701) is limited and matched with the axial clamping strip (702) and the axial clamping groove (602) through the axial clamping strip (702) and the axial clamping groove (602), the axial clamping strip (702) and the axial clamping groove (602) are used for synchronously rotating the cylinder body (701) with the transmission sleeve (6) and simultaneously enabling the axial displacement of the cylinder body (701).

5. A turning gear assembly according to any one of claims 1 to 3, wherein: The front end of the disc wheel sleeve (7) is provided with a plurality of positioning end shafts (703) for connecting with the rotating shaft.

6. A turning gear assembly according to any one of claims 1 to 3, wherein: The disc wheel sleeve (7) is provided with a brake assembly (11), and the brake assembly (11) comprises brake blocks (1101) for extending or shortening and abutting against an external structure to realize brake locking.

7. The swing tool of claim 1, wherein: The rack (1) is provided with a shroud (2) for covering the driving motor (14), a cavity is formed between the shroud (2) and the rack (1), and the rack (1) is provided with a fan (3) communicating with the cavity; the disc wheel tool is further connected with a control cabinet (9), the control cabinet (9) is at least electrically connected with the driving motor (14) and the fan (3) and is used for controlling start and stop of the driving motor (14) and the fan (3).

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