Auxiliary turning tool and using method thereof

Abstract

The invention relates to the technical field of wind power generation, in particular to an auxiliary turning tool and a using method thereof. The auxiliary turning tool comprises a lifting appliance rotating shaft used for being detachably installed on a hub of the wind generating set; the shaft sleeve sleeves the periphery of the lifting appliance rotating shaft, and the lifting appliance rotating shaft can rotate relative to the shaft sleeve; the shaft sleeve is used for being connected with a lifting belt of lifting equipment, and the lifting equipment can apply upward traction force to the shaft sleeve through the lifting belt. When the main shaft of the wind generating set is in a stuck state, the auxiliary turning tool is detachably installed on the hub of the wind generating set, the hoisting equipment can apply upward traction force to the shaft sleeve through the hoisting belt, so that the turning equipment drives the hub to continue to rotate to a specified angle, a wind wheel is conveniently dismounted subsequently, and the main shaft or a bearing is conveniently replaced; normal work of the wind generating set is achieved, cost is low, mounting and dismounting are convenient, and working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation, in particular to an auxiliary turning gear and a method thereof. BACKGROUND

[0002] The drive chain is the core component of the wind turbine to realize the conversion from wind energy to electric energy, wherein the main shaft of the drive chain is supported in the nacelle through bearings, used to connect the wind wheel and the transmission system in the nacelle, so as to transmit the mechanical energy of the blade rotation to the gear box, and convert it into electric energy through the generator. During the installation, commissioning and debugging or operation and maintenance of the wind turbine, the main shaft is usually driven by the turning gear equipment to rotate the wind wheel to a specified angle, so that the blade of the wind wheel is in a horizontal or vertical position to meet the disassembly requirements of the hub and the blade of the wind wheel.

[0003] However, when the main shaft or the bearing is damaged and the like, the wind wheel stops at a random position, the wind wheel cannot be removed by hoisting, the blade cannot be removed due to the improper position, the auxiliary turning gear is needed to rotate the wind wheel to a specific position, the conventional turning gear equipment cannot drive the wind wheel to rotate due to the large turning resistance, if the large-torque turning gear equipment is replaced, it is not only high in cost and long in research and development cycle, but also difficult to implement due to the limitation of the internal space of the nacelle; if the blade is hoisted by the sling, the blade strength is insufficient and the blade is easily damaged, and the operation is difficult due to the uncertain stop angle of the blade. SUMMARY

[0004] The present application aims to solve the defects that the wind wheel cannot be rotated and stops at a random position in the prior art when the main shaft is stuck, and the wind wheel cannot be disassembled, and provides an auxiliary turning gear and a method thereof.

[0005] The present application solves the above technical problems by the following technical solutions:

[0006] An auxiliary turning gear, comprising: a sling shaft, used to be detachably installed to the hub of a wind turbine; a shaft sleeve, sleeved on the outer periphery of the sling shaft, the sling shaft being capable of rotating relative to the shaft sleeve; the shaft sleeve being used to connect a sling belt of hoisting equipment, the hoisting equipment being capable of applying an upward traction force to the shaft sleeve through the sling belt.

[0007] In the present application, when the wind turbine is in the state that the main shaft is stuck, the auxiliary turning gear of the present application is detachably installed to the hub of the wind turbine, the hoisting equipment can apply an upward traction force to the shaft sleeve through the sling belt, so that the turning gear equipment can continue to rotate the hub to a specified angle, facilitating the subsequent removal of the wind wheel and the replacement of the main shaft or the bearing, and realizing the normal operation of the wind turbine.

[0008] Optionally, the auxiliary turning gear further includes a mounting component for detachably connecting the spreader shaft to the wheel hub. The mounting component is a flange, through which the spreader shaft passes and is fixedly connected. The flange is detachably mounted to the wheel hub using fasteners.

[0009] In this solution, the mounting components are adapted to various wind turbine generator sets, improving the versatility of the auxiliary turning gear tooling and facilitating its installation and disassembly.

[0010] Optionally, the rotation direction of the lifting device shaft is the same as the rotation direction of the wheel hub, and the rotation axis of the lifting device shaft is coaxial with the rotation axis of the wheel hub.

[0011] In this scheme, the rotation axis of the lifting device shaft is set coaxially with the rotation axis of the wheel hub to ensure that the lifting equipment applies a stable traction force to the bushing. When the sling wraps around the outer circumference of the bushing, the sling and the bushing remain basically stationary, while the lifting device shaft passes through the bushing and rotates synchronously with the wheel hub, thereby preventing the sling from getting tangled during the turning process.

[0012] Optionally, the auxiliary trolley fixture further includes a lifting beam, which is detachably connected to the lifting device shaft; a boom extending in a direction perpendicular to the extension direction of the lifting beam is fixedly connected to the top of the lifting beam, and the boom is detachably connected to the lifting strap of the lifting equipment via a shackle.

[0013] In this solution, by adjusting the hook-up position of the shackle on the boom and fine-tuning the angle of the lifting beam relative to the vertical direction, the spatial posture of the mounting component fixedly connected to the lifting device shaft is simultaneously adjusted, so that the mounting surface of the mounting component precisely corresponds to the mounting surface on the wheel hub, thereby achieving reliable docking between the auxiliary turning tool and the wheel hub.

[0014] Furthermore, a connecting plate is sleeved on the outer periphery of the lifting device shaft, and an mounting plate is provided at the bottom of the lifting beam; during the lifting of the auxiliary trolley tooling, the mounting plate is detachably connected to the connecting plate by fasteners.

[0015] In this solution, when the wind turbine stops rotating at any angle, the installation position of the lifting beam in the circumferential direction of the lifting beam is adjusted by loosening the fasteners and rotating the connecting plate and the lifting beam. This, in turn, adjusts the spatial posture of the mounting parts that are fixedly connected to the lifting beam shaft. After ensuring that the connecting holes of the mounting parts are aligned with the mounting holes of the hub, the fasteners are tightened again, thus achieving reliable installation of the auxiliary turning gear tooling at any stop position of the wind turbine.

[0016] Optionally, the auxiliary turning tooling further includes a lifting seat, which is detachably connected to the end of the lifting device shaft away from the mounting component, and the bushing is clamped between the lifting seat and the mounting component.

[0017] In this solution, a bushing is clamped between the lifting base and the mounting component, and its position relative to the lifting device's axis is limited from the left and right sides of the bushing, preventing the bushing from moving axially along the lifting device's axis.

[0018] Optionally, the lifting base includes a limiting plate, which is fixedly connected to the lifting device shaft by fasteners to limit the relative position of the bushing and the lifting device shaft along the axial direction of the lifting device shaft; a lifting lug is provided on the side of the limiting plate away from the mounting component, which is used to connect the lifting equipment after the hub is disassembled.

[0019] In this solution, lifting lugs are used to connect to hoisting equipment after the wheel hub is disassembled, assisting in the wheel hub flipping and facilitating installation and disassembly.

[0020] Optionally, the outer diameter of the end of the lifting shaft facing the lifting seat is reduced to form a platform, and the opposite ends of the platform form an abutment surface and a step surface, respectively; the lifting seat is fixedly connected to the abutment surface by fasteners, and the connecting plate is sleeved on the outer peripheral surface of the platform and sandwiched between the lifting seat and the step surface.

[0021] In this solution, a connecting plate is fitted onto the outer periphery of the platform and sandwiched between the hanging seat and the step surface. The structure is compact, easy to install and disassemble, and improves connection stability.

[0022] A method for using an auxiliary turning wheel fixture, wherein the auxiliary turning wheel fixture is used, and the method for using the auxiliary turning wheel fixture specifically includes:

[0023] If the main shaft of the wind turbine generator is jammed when the hub of the wind turbine generator is driven to rotate by the turning gear, the auxiliary turning gear fixture is installed on the hub of the wind turbine generator and the lifting strap of the hoisting equipment is connected to the bushing of the auxiliary turning gear fixture.

[0024] The slings apply an upward traction force to the hub to reduce the resistance of the turning equipment in driving the hub to rotate, so that the turning equipment can drive the hub to continue rotating to the designated position.

[0025] In this solution, when the wind turbine generator set is stuck in the main shaft state, the auxiliary turning gear of the present invention can be detachably installed on the hub of the wind turbine generator set. The hoisting equipment can apply an upward traction force to the bushing through the hoisting strap, so that the turning gear equipment drives the hub to continue to rotate to the specified angle, which facilitates the subsequent removal of the wind turbine, replacement of the main shaft or bearing, and the normal operation of the wind turbine generator set.

[0026] The positive and progressive effects of this invention are as follows:

[0027] When the main shaft of a wind turbine is stuck, by detachably installing an auxiliary turning gear onto the hub of the wind turbine, the hoisting equipment can apply an upward traction force to the shaft of the lifting device inserted in the bushing through the lifting straps. This allows the turning gear to drive the hub to continue rotating to a specified angle and stop at a detachable position. This facilitates the subsequent removal of the wind turbine rotor, replacement of the main shaft or bearings, and enables the wind turbine to operate normally. This method is low-cost, convenient for installation and disassembly, and improves work efficiency. Attached Figure Description

[0028] Figure 1 This is a first-view installation diagram of the auxiliary turning tool and wheel hub according to an embodiment of the present invention.

[0029] Figure 2 This is a second-view installation diagram of the auxiliary turning tool and wheel hub according to an embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the structure of the auxiliary turning wheel tool for removing the lifting beam according to an embodiment of the present invention.

[0031] Figure 4 This is a first-view structural schematic diagram of an auxiliary turning tool according to an embodiment of the present invention.

[0032] Figure 5 This is a second-view structural schematic diagram of the auxiliary turning tooling according to an embodiment of the present invention.

[0033] Figure 6 This is an exploded first-view diagram of an auxiliary turning tool according to an embodiment of the present invention.

[0034] Figure 7 This is an exploded view of the auxiliary turning tooling according to an embodiment of the present invention.

[0035] Figure 8 This is a schematic diagram of the structure of the lifting shaft and mounting component according to an embodiment of the present invention.

[0036] Figure 9 This is a schematic diagram of the structure of the lifting shaft and mounting component according to another embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] Spreader shaft 1

[0039] Taiwan Phase 11

[0040] Contact surface 111

[0041] Step surface 112

[0042] Bushing 2

[0043] Annular flange 21

[0044] Mounting component 3

[0045] Flange 31

[0046] Reinforcing rib 32

[0047] Installation section 33

[0048] 4-beam suspension

[0049] boom 41

[0050] Hanging board 411

[0051] Mounting plate 42

[0052] Connecting plate 43

[0053] Hanging seat 5

[0054] Limit plate 51

[0055] Hanging Ear 52

[0056] Wheel hub 6

[0057] Bolt 7 Detailed Implementation

[0058] The present invention is further illustrated below by way of embodiments, but these embodiments are not intended to limit the invention to their scope. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0059] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connection," "setup," "installation," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can mean that two components are internally connected. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “center,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0061] The terms “first”, “second”, etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0062] The terms “including,” “comprising,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0063] like Figure 1 and Figure 2 As shown, the present invention provides an auxiliary turning tool for detachably installing onto the hub 6 of a wind turbine generator set. In abnormal working conditions such as the main shaft of the wind turbine generator set being jammed, it works in conjunction with a turning device (not shown in the figure) to realize the turning operation of the wind turbine.

[0064] like Figure 3 As shown, in some embodiments, the auxiliary turning gear tooling of the present invention includes a mounting component 3 and a lifting shaft 1 (e.g., Figure 6 As shown in the figure, the lifting shaft 1 and the mounting component 3 are fixedly connected. The mounting component 3 is detachably installed to the hub 6 of the wind turbine generator set. The bushing 2 is sleeved on the outer circumference of the lifting shaft 1 and is used to connect the lifting equipment's sling (not shown in the figure). The lifting equipment can apply an upward traction force to the lifting shaft passing through the bushing 2 through the sling, so that the turning equipment drives the hub 6 to continue rotating until one blade of the wind turbine is at a specified angle in a horizontal or vertical position. This facilitates the subsequent removal of the wind turbine, replacement of the main shaft or bearings, and normal operation of the wind turbine generator set. This method is low-cost and improves work efficiency. It should be noted that the present invention does not limit the specific connection method between the lifting shaft 1 and the hub 6. In some embodiments, the lifting shaft 1 and the mounting component 3 are integrated and cannot be detached. In some other embodiments, the lifting shaft 1 can also be installed to the hub 6 indirectly through other components or directly.

[0065] Specifically, when the hub 6 of the wind turbine generator is driven to rotate by the turning gear, if the main shaft of the wind turbine generator jams, the auxiliary turning gear of this invention is installed on the hub 6 of the wind turbine generator, and the lifting strap of the hoisting equipment is connected to the bushing 2 of the auxiliary turning gear. The lifting strap applies an upward traction force to the hub 6 to reduce the resistance of the turning gear driving the hub 6 to rotate, so that the turning gear can drive the hub 6 to continue rotating to the specified angle. Without replacing the original turning gear or changing the structure of the hub 6, the auxiliary turning gear reduces the resistance of the turning gear driving the hub 6 to rotate, allowing the turning gear to drive the hub 6 to continue rotating to the specified angle, reducing costs, facilitating installation and disassembly, and improving work efficiency.

[0066] In some embodiments, the lifting device shaft 1 is fixedly connected to the mounting component 3 and can rotate relative to the bushing 2. Specifically, the lifting device shaft 1 can be fixedly connected to the mounting component 3 by means of fastener connection or welding, or the lifting device shaft 1 can be integrally formed with the mounting component 3. In one embodiment, the mounting component 3 is provided with a connecting hole, which corresponds to the original mounting hole of the wheel hub 6, for fasteners to pass through. The fasteners can be bolts 7, which pass through the connecting hole of the mounting component 3 and the mounting hole of the wheel hub 6, to firmly fix the auxiliary turning tool to the wheel hub 6. By utilizing the original mounting hole of the wheel hub 6, the damage to the wheel hub 6 by additional drilling is avoided, and it is convenient and quick to install and disassemble.

[0067] In one embodiment, the rotation direction of the lifting device shaft 1 is the same as that of the hub 6, and the rotation axis of the lifting device shaft 1 is coaxial with the rotation axis of the hub 6, ensuring that the lifting equipment applies a stable traction force to the bushing 2. The sling wraps around the outer circumference of the bushing 2, so that the sling and the bushing 2 remain basically stationary. The lifting device shaft 1 passes through the bushing 2 and rotates synchronously with the hub 6, thereby preventing the sling from getting tangled during the turning process.

[0068] In one embodiment, the outer peripheral surface of the bushing 2 is provided with an annular protrusion 21. Specifically, in conjunction with Figure 5 The bushing 2 is a hollow cylinder, and the annular convex edge 21 is formed by bending radially outward from both ends. The annular convex edge 21 limits the relative position of the lifting strap of the hoisting equipment along the axial direction of the bushing 2 and the bushing 2, thereby preventing the lifting strap from slipping off, ensuring that the lifting strap stably pulls the bushing 2, and improving the connection reliability between the lifting strap and the bushing 2.

[0069] like Figures 4-7 As shown, the auxiliary turning tool of the present invention also includes a lifting seat 5. The lifting seat 5 is detachably fixedly connected to the end of the lifting shaft 1 away from the mounting part 3. The bushing 2 is sandwiched between the lifting seat 5 and the mounting part 3, and its position relative to the lifting shaft 1 is defined from the left and right sides of the bushing 2 to prevent the bushing 2 from moving axially along the lifting shaft 1.

[0070] Specifically, the lifting base 5 includes a limiting plate 51, which is fixedly connected to the end of the lifting device shaft 1 by fasteners, and is used to limit the relative position of the bushing 2 and the lifting device shaft 1 along the axial direction of the lifting device shaft 1. The side of the limiting plate 51 furthest from the mounting component 3 ( Figure 3 The left side of the middle limit plate 51 is provided with a lifting lug 52. The lifting lug 52 has a hook hole for the shackle to pass through. One end of the sling is connected to the hook of the lifting equipment, and the other end is connected to the shackle after the wheel hub 6 is removed, which helps to complete the turning of the wheel hub 6 and facilitates installation and disassembly.

[0071] In some embodiments, such as Figure 3As shown, the mounting component 3 is specifically a flange 31. The lifting shaft 1 passes through the mounting hole of the flange 31 and is fixedly connected to the flange 31. The flange 31 is detachably mounted to the hub 6 by bolts 7. Figure 8 In the illustrated embodiment, the flange 31 has three evenly distributed mounting portions 33 along its edge, and the aforementioned connection holes are formed in the mounting portions 33. (Combined with...) Figure 1 The auxiliary turning gear is mounted to the hub 6 via the mounting portion 33 of the flange 31, ensuring connection stability while reducing weight. Furthermore, the flange 31 has multiple reinforcing ribs 32 spaced circumferentially along the shaft 1 of the lifting device on the side near the bushing 2, improving the structural strength and rigidity of the auxiliary turning gear. It should be noted that the present invention does not limit the shape of the flange 31. Figure 9 In the illustrated embodiment, the flange 31 is disc-shaped. The auxiliary turning gear tooling of the present invention can be adapted to various types of wind turbine generator sets by changing the flange 31, thereby improving the versatility of the auxiliary turning gear tooling.

[0072] In some embodiments, the auxiliary turning gear of the present invention further includes a lifting beam 4, which is detachably connected to the lifting shaft 1 via a connecting plate 43, for use in conjunction with the lifting equipment to lift the auxiliary turning gear to a position corresponding to the mounting surface of the wheel hub 6. After the auxiliary turning gear is installed on the wheel hub 6, the lifting beam 4 can be disassembled to avoid interference between the lifting beam 4 and the lifting straps during subsequent turning operations.

[0073] like Figure 1 and Figure 2 As shown, during the hoisting of the auxiliary turning machine tool, the lifting beam 4 extends from the end near the lifting shaft 1 to the end near the lifting strap to prevent the auxiliary turning machine tool from interfering with the components around the wheel hub 6.

[0074] Furthermore, a boom 41 is fixedly connected to the top of the lifting beam 4. The boom 41 extends in a direction perpendicular to the extension direction of the lifting beam 4, and is detachably connected to the lifting equipment's slings via shackles. By adjusting the hook position of the shackles on the boom 41, the angle of the lifting beam 4 relative to the vertical direction is finely adjusted, thereby synchronously adjusting the spatial posture of the mounting component 3 fixedly connected to the lifting device's rotating shaft 1. This ensures that the mounting surface of the mounting component 3 precisely corresponds to the mounting surface on the wheel hub 6, achieving reliable docking between the auxiliary turning tool and the wheel hub 6.

[0075] Specifically, the top surface of the boom 41 is provided with a lifting plate 411, which has multiple through holes for shackles to pass through. These through holes extend in a direction parallel to the extension direction of the boom 41. By inserting shackles through different through holes in the lifting plate 411, the angle of the lifting beam 4 relative to the vertical direction can be adjusted, thereby adjusting the posture of the flange 31. This ensures that the end face of the flange 31 is parallel to the mounting surface of the hub 6, achieving precise matching with the mounting surface of the hub 6.

[0076] like Figure 3 and Figure 6 As shown, in some embodiments, a connecting plate 43 is sleeved on the outer periphery of the lifting shaft 1, and an mounting plate 42 is provided at the bottom of the lifting beam 4. During the lifting auxiliary trolley tooling process, the mounting plate 42 is detachably connected to the connecting plate 43 by fasteners.

[0077] like Figure 8 As shown, further, the outer diameter of the end of the lifting shaft 1 facing the lifting base 5 is reduced to form a platform stage 11. The opposite ends of the platform stage 11 form an abutment surface 111 and a stepped surface 112, respectively. The lifting base 5 is fixedly connected to the abutment surface 111 by fasteners. The connecting plate 43 is sleeved on the outer circumferential surface of the platform stage 11 and sandwiched between the limiting plate 51 of the lifting base 5 and the stepped surface 112 of the lifting shaft 1. The structure is compact, convenient for installation and disassembly, and improves connection stability. When the wind turbine stops rotating at any angle, by loosening the fasteners and rotating the connecting plate 43 and the lifting beam 4, the installation orientation of the lifting beam 4 in the circumferential direction of the lifting shaft 1 is adjusted, thereby synchronously adjusting the spatial posture of the mounting part 3 fixedly connected to the lifting shaft 1. After ensuring that the connecting hole of the mounting part 3 is aligned with the mounting hole of the hub 6, the fasteners are tightened again to achieve reliable installation of the auxiliary turning gear tooling at any stopping position of the wind turbine.

[0078] The present invention also provides a method for using an auxiliary turning gear tool, which employs the aforementioned auxiliary turning gear tool. The method for using the auxiliary turning gear tool includes the following steps:

[0079] S1. Measure the wind turbine stopping angle using an angle sensor or measuring tool to determine the angle of the lifting beam 4. Loosen the fasteners between the lifting seat 5 and the lifting shaft 1. Rotate the connecting plate 43 and the lifting beam 4. Adjust the angle of the lifting beam 4 relative to the flange along the circumference of the lifting shaft 1 according to the wind turbine stopping angle. After adjustment, tighten the fasteners.

[0080] S2. Install shackles on the boom 41 of the lifting beam 4, start the lifting equipment to lift the auxiliary turning machine, and lift the auxiliary turning machine to the position of the hub 6. Check the angle of the end face of the flange 31 relative to the vertical direction. If the angle is greater than 7°, adjust the position of the shackle on the boom 41 to adjust the posture of the flange 31 until the connecting hole of the flange 31 is aligned with the mounting hole of the hub 6. Then install the flange 31 to the hub 6 with bolts 7. Finally, remove the fasteners of the lifting beam 4 and the connecting plate 43 and remove the lifting beam 4.

[0081] In some embodiments, three guide pins are provided on the mounting surface of the hub 6, each corresponding to a connection hole in one of the three mounting portions 33 of the flange 31. During installation, the guide pins are first installed in the mounting holes of the hub 6. Then, the flange 31 is aligned and fitted onto the outer circumference of the guide pins, allowing the guide pins to insert into the connection holes of the flange 31. This guides the flange 31 to slide smoothly along the axial direction of the guide pins to the mounting surface of the hub 6, facilitating positioning, enabling rapid installation, and ensuring that the connection holes of the flange 31 correspond to the mounting holes of the hub 6, preventing misalignment and improving installation efficiency. Further, after the flange 31 is initially positioned by the guide pins, bolts 7 are sequentially passed through the connection holes of the flange 31 and the mounting holes of the hub 6. Subsequently, the guide pins are removed, and their positions are replaced by bolts 7. Finally, all bolts 7 are tightened to fix the flange 31 to the mounting surface of the hub 6.

[0082] like Figure 8 As shown, in some embodiments, the connection holes of the flange 31 are opened on its three mounting portions 33. The position of the connection holes is matched with the mounting holes of the hub, which is simple in structure and convenient for installation.

[0083] S3. The outer circumference of the bushing 2 is supported by the lifting straps of the hoisting equipment. The hoisting equipment is started to slowly apply an upward traction force. When the traction force reaches the set tension, the turning equipment is started to drive the main shaft to rotate. Under the action of the upward traction force, the pressure between the main shaft and the bearing is reduced, thereby reducing the resistance to the rotation of the hub and driving the hub to rotate to the specified angle.

[0084] S4. After the hub is rotated to the specified angle, stop the turning, remove the bolts between the wind turbine and the nacelle, remove the wind turbine as a whole, and use the lifting lugs 52 on the lifting base 5 to connect the lifting equipment's slings to turn the wind turbine to a horizontal state.

[0085] S5. Remove the damaged spindle or bearing, replace it with a new spindle or bearing, and then reinstall the impeller.

[0086] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. An auxiliary turning tool, characterized in that, The auxiliary turning gear tooling includes: Spreader shaft for detachable mounting to the hub of a wind turbine generator; A bushing is fitted around the outer circumference of the lifting device's rotating shaft, allowing the lifting device's rotating shaft to rotate relative to the bushing. The bushing is used to connect the slings of the hoisting equipment, which can apply an upward traction force to the bushing through the slings.

2. The auxiliary turning tooling as described in claim 1, characterized in that, The auxiliary turning gear also includes a mounting component for detachably connecting the lifting device shaft to the hub.

3. The auxiliary turning tooling as described in claim 2, characterized in that, The mounting component is a flange, the lifting device shaft passes through the flange and is fixedly connected to the flange, and the flange is detachably installed to the hub by fasteners.

4. The auxiliary turning tooling as described in claim 1, characterized in that, The rotation direction of the lifting device shaft is the same as that of the wheel hub, and the rotation axis of the lifting device shaft is coaxial with the rotation axis of the wheel hub.

5. The auxiliary turning tooling as described in claim 2, characterized in that, The auxiliary turning gear also includes a lifting beam, which is detachably connected to the lifting device shaft; The top of the lifting beam is fixedly connected to a boom extending in a direction perpendicular to the extension direction of the lifting beam, and the boom is detachably connected to the sling of the lifting equipment via a shackle.

6. The auxiliary turning tooling as described in claim 5, characterized in that, A connecting plate is fitted around the outer periphery of the lifting device's rotating shaft, and an mounting plate is provided at the bottom of the lifting beam; during the lifting of the auxiliary trolley fixture, the mounting plate is detachably connected to the connecting plate by fasteners.

7. The auxiliary turning tooling as described in claim 6, characterized in that, The auxiliary turning gear also includes a lifting base, which is detachably connected to the end of the lifting device shaft away from the mounting component, and the bushing is clamped between the lifting base and the mounting component.

8. The auxiliary turning tooling as described in claim 7, characterized in that, The lifting base includes a limiting plate, which is fixedly connected to the lifting device shaft by fasteners, and is used to limit the relative position of the bushing and the lifting device shaft along the axial direction of the lifting device shaft; The limiting plate has a lifting lug on the side away from the mounting component, which is used to connect the lifting equipment after the wheel hub is disassembled.

9. The auxiliary turning tooling as described in claim 7, characterized in that, The outer diameter of the end of the lifting device shaft facing the lifting seat is reduced to form a platform stage, and the two opposite ends of the platform stage respectively form an abutment surface and a step surface; The hanging bracket is fixedly connected to the abutment surface by fasteners, and the connecting plate is sleeved on the outer peripheral surface of the step and sandwiched between the hanging bracket and the step surface.

10. A method of using an auxiliary turning wheel tool, characterized in that, It employs the auxiliary turning gear tooling as described in any one of claims 1-9, and the method of using the auxiliary turning gear tooling specifically includes: If the main shaft of the wind turbine generator is jammed when the hub of the wind turbine generator is driven to rotate by the turning gear, the auxiliary turning gear fixture is installed on the hub of the wind turbine generator and the lifting strap of the hoisting equipment is connected to the bushing of the auxiliary turning gear fixture. The slings apply an upward traction force to the hub to reduce the resistance of the turning equipment in driving the hub to rotate, so that the turning equipment can drive the hub to continue rotating to a specified angle.

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