Turning gear and wind turbine generator set

Abstract

This utility model relates to the field of wind turbine operation and maintenance technology, and provides a turning gear device and a wind turbine generator set. The turning gear device includes a transfer component rotatably mounted on a support component; a drive component mounted on the support component and in transmission cooperation with the transfer component, used to drive the transfer component to rotate around its rotation axis; a locking component with a load-bearing body fixedly mounted on the support component; a locking element movably disposed on the load-bearing body to switch between locked and unlocked states; and a detection element fixedly disposed on the load-bearing body and electrically connected to the main control system of the drive component, used to detect the position signal of the locking element and feed the position signal back to the main control system. This utility model achieves safe interlock control of the drive component by detecting the position signal of the locking element and feeding it back to the main control system of the drive component, ensuring that the drive component cannot start when the locking element is not disengaged, thus avoiding equipment damage and safety accidents.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine operation and maintenance technology, and in particular to a turning gear device and a wind turbine generator set. Background Technology

[0002] In the assembly and maintenance of wind turbine rotors, the turning gear is a key auxiliary tool for achieving low-speed rotor rotation. It is mainly used to adjust the blade installation angle, align the drive system axis, or release braking pressure. The specific operating procedure is as follows: First, the turning gear drives the rotor to rotate around the main shaft to the target position (such as blade zero-position calibration, hub alignment with the main shaft). Before installing the blades, the mechanical locking pin on the turning gear is activated to lock the rotor in its current position, preventing accidental rotation due to accidental contact or external force, ensuring the accuracy and safety of blade installation. After the blades are installed, the turning gear needs to be operated again for turning. At this time, the mechanical locking pin needs to be disengaged from the limit position to release the rotor lock, allowing the drive unit to drive the rotor to rotate normally.

[0003] However, in actual operation, operators often forget to disengage the mechanical locking pin before operating the turning gear. When the mechanical locking pin is not fully disengaged, it still restricts the impeller rotation. Starting the drive unit for turning gears at this time can easily cause the motor windings to burn out due to sudden load changes, or cause the gear transmission mechanism to generate impact loads due to jamming, resulting in problems such as wear and breakage of gear teeth. Utility Model Content

[0004] This utility model provides a turning device and a wind turbine generator set to solve the above-mentioned technical defects in the prior art. By detecting the position signal of the locking component and feeding it back to the main control system of the drive component, the safety interlock control of the drive component is realized, ensuring that the drive component cannot start when the locking component is not disengaged, thereby avoiding equipment damage and safety accidents.

[0005] The first aspect of this utility model provides a turning device, comprising:

[0006] Support components;

[0007] An adapter assembly is rotatably mounted on the support assembly;

[0008] A drive component, mounted on the support component and in transmission cooperation with the adapter component, is used to drive the adapter component to rotate around the rotation axis;

[0009] A locking assembly includes a supporting body, a locking component, and a detection element, wherein: the supporting body is fixedly mounted on the support assembly; the locking component is movably disposed on the supporting body to switch between a locked state and an unlocked state; in the locked state, the locking component limits the transition assembly to prevent the transition assembly from rotating; in the unlocked state, the locking component releases the limitation on the transition assembly, and the drive assembly drives the transition assembly to rotate around the rotation axis; the detection element is fixedly disposed on the supporting body and electrically connected to the main control system of the drive assembly, for detecting the position signal of the locking component and feeding the position signal back to the main control system.

[0010] According to the turning device provided by this utility model, at least one first limiting hole is provided on the support component, and the bearing body is located at the position of the first limiting hole;

[0011] The adapter assembly has multiple second limiting holes, the center of each second limiting hole is eccentrically arranged relative to the rotation axis of the adapter assembly, and the multiple second limiting holes are distributed in a circular array along the circumference of the adapter assembly.

[0012] In the locked state, the locking component is inserted into the first limiting hole and one of the second limiting holes to prevent the adapter assembly from rotating; in the unlocked state, the locking component disengages from the corresponding second limiting hole, and the driving component drives the adapter assembly to rotate around the rotation axis.

[0013] According to the turning device provided by this utility model, the locking component includes a locking member and a trigger member, wherein the trigger member is fixedly disposed on the locking member;

[0014] In the locked state, the locking member is inserted into the first limiting hole and one of the second limiting holes; in the unlocked state, the locking member disengages from the corresponding second limiting hole.

[0015] The trigger is used to trigger the action of the detection element to generate a position signal for the locking element.

[0016] According to the turning device provided by this utility model, the bearing body is provided with a first limiting groove and a second limiting groove at intervals;

[0017] The detection element is located at the position of the second limiting groove;

[0018] In the locked state, the trigger moves to the first limiting groove; in the unlocked state, the trigger moves to the second limiting groove to trigger the detection element to generate a signal that the locking element is in the unlocked position.

[0019] According to the turning device provided by this utility model, the bearing body is provided with a first limiting groove and a second limiting groove at intervals;

[0020] The detection elements are located at the positions of the first limiting groove and the second limiting groove, respectively;

[0021] In the locked state, the trigger moves to the first limiting groove to trigger the detection element located in the first limiting groove to generate a signal that the locking member is in the locked position;

[0022] In the unlocked state, the trigger moves to the second limiting groove to trigger the detection element located in the second limiting groove to generate a signal that the locking member is in the unlocked position.

[0023] According to the turning device provided by this utility model, the detection element includes any one of a proximity switch, a photoelectric sensor, and a limit switch;

[0024] When the detection element includes a proximity switch, the trigger element includes a metal component or a permanent magnet;

[0025] When the detection element includes a photoelectric sensor and a limit switch, the triggering element includes a trigger rod or a stop.

[0026] According to the turning gear device provided by this utility model, the adapter assembly includes:

[0027] The adapter gear is rotatably mounted on the support assembly via a rotating joint;

[0028] The mounting flange is fixedly mounted on the adapter gear and is suitable for connecting the wind turbine rotor;

[0029] The second limiting hole is formed on the adapter gear.

[0030] According to the turning device provided by this utility model, at least three drive components are spaced apart, and each drive component includes:

[0031] Drive components;

[0032] A speed reducer is fixedly installed on the side of the support assembly away from the adapter assembly. The input shaft of the speed reducer is connected to the drive component, and the output shaft of the speed reducer is provided with a drive gear. The drive gear is in transmission engagement with the adapter gear.

[0033] According to the turning device provided by this utility model, the support assembly includes a first support plate and a second support plate arranged at intervals and in parallel.

[0034] The drive assembly is mounted on the first support plate, and the output shaft of the drive assembly passes through the first support plate and the second support plate; the bearing body is fixedly mounted on the first support plate.

[0035] The adapter assembly is rotatably mounted on the second support plate.

[0036] The second aspect of this utility model provides a wind turbine generator set, including a main control system, an alarm module, and a turning device as described in any one of the above. The alarm module is electrically connected to the main control system and is used to issue an alarm prompt. The main control system is used to receive signals from the detection element and to control the operation of the drive component.

[0037] The turning device provided by this utility model improves the structure of the locking component and adds a supporting body to the support assembly. A detection element is installed on the supporting body. By detecting the position signal of the locking component and feeding it back to the main control system of the drive assembly, the safety interlock control of the drive assembly is realized: when the locking component is not disengaged (still in the locked state), the detection element does not detect the signal that the locking component is in the unlocked position. The main control system forcibly locks the drive assembly (such as cutting off the motor power supply) and prohibits it from starting. This avoids the motor of the drive assembly from burning out the windings due to sudden load changes, or the gear transmission mechanism from generating impact loads due to jamming, which can cause problems such as wear and breakage of the gear teeth.

[0038] In actual operation, the activation and deactivation of the locking components both rely on manual operation and memorization by the operator. Because the operation involves switching between inserting and removing the locking components, environmental interference (such as insufficient lighting) or human negligence often leads to abnormal scenarios where the drive assembly is activated before the locking components are fully deactivated. In this situation, the locking components remain in mechanical contact with the adapter, causing overload damage to the drive assembly. This can result in the motor windings burning out due to sudden load changes (exceeding the rated torque), or the gear transmission mechanism experiencing impact loads due to jamming, causing wear and breakage of the gear teeth. It can also lead to the risk of locking pin failure, where the locking pin and limit hole deform or break due to forced force, losing their limit function and causing an accidental rotor rotation.

[0039] Therefore, the turning device provided in this utility model embodiment can automatically detect the status of the locking component and actively intervene in the operation of the drive component, ensuring that the drive component cannot be started when the locking component is not disengaged, thereby avoiding equipment damage and safety accidents. It effectively solves the problem of the drive component being started due to human negligence and the locking component not being disengaged, which leads to damage to the drive component. It can improve the safety and reliability of the turning device operation.

[0040] The wind turbine generator set provided by this utility model improves the structure of the locking component in the turning gear, adds a supporting body to the support assembly, installs a detection element on the supporting body, detects the position signal of the locking component and feeds it back to the main control system of the drive assembly; and adds an alarm module electrically connected to the main control system to realize the safety interlock control of the drive assembly: when the locking component is not disengaged (still in the locked state), the detection element does not detect the signal that the locking component is in the unlocked position, the main control system forcibly locks the drive assembly (e.g., cuts off the motor power supply) to prevent it from starting. At the same time, the main control system triggers the alarm module (e.g., buzzer, warning light) to remind the operator that the locking component has not been disengaged and that the operation can only continue after the disengagement operation is completed.

[0041] By detecting the status of the locking component and coordinating with the alarm module, the drive assembly cannot be started if the locking component is not disengaged, thereby avoiding equipment damage and safety accidents. This effectively solves the problem of the drive assembly being started due to human negligence and the locking component not being disengaged, which can damage the drive assembly and improve the safety and reliability of the turning gear operation. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the structure of the turning device provided in this embodiment of the utility model.

[0044] Figure 2 This is a partial structural schematic diagram of the turning device provided in an embodiment of the present utility model.

[0045] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0046] Figure 4 This is a structural schematic diagram of the turning device provided in another embodiment of the present utility model.

[0047] Figure 5 This is a side view of the turning device provided in an embodiment of the present utility model.

[0048] Figure label:

[0049] 10. Support component; 11. First limiting hole; 12. First support plate; 13. Second support plate;

[0050] 20. Adapter assembly; 21. Second limiting hole; 22. Adapter gear; 23. Mounting flange;

[0051] 30. Drive assembly; 31. Drive component; 32. Reducer;

[0052] 40. Locking assembly; 41. Support body; 411. First limiting groove; 412. Second limiting groove; 413. Guide slide; 42. Locking component; 421. Locking element; 422. Trigger element; 43. Detection element;

[0053] 50. Positioning components. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0055] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0056] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] Figure 1 This is a schematic diagram of the structure of the turning device provided in this embodiment of the utility model. Figure 2 This is a partial structural schematic diagram of the turning device provided in an embodiment of the present utility model. Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0059] See Figures 1 to 3 This utility model provides a turning device for driving a wind turbine rotor (including blades and hub) to rotate around the main shaft. It is mainly used for rotor rotation operations during the installation, maintenance, repair, and emergency situations of wind turbine generator sets. Through controllable torque output, it achieves low-speed, stable rotor rotation.

[0060] The turning gear device mainly consists of a support assembly 10, a transfer assembly 20, a drive assembly 30, and a locking assembly 40.

[0061] The support assembly 10 serves as the mounting base and load-bearing platform for the turning gear, used to fix the adapter assembly 20, drive assembly 30, and locking assembly 40, while also providing stable support for the rotation of the adapter assembly 20. The support assembly 10 typically adopts a welded steel plate frame with pre-drilled mounting holes and weight-reducing grooves inside; the mounting parts of the adapter assembly 20 and drive assembly 30 are reinforced with stiffening ribs to increase rigidity and ensure that they can withstand the radial and axial loads during rotor rotation.

[0062] The adapter 20 is rotatably mounted on the support assembly 10. As an intermediate connection between the drive assembly 30 and the wind turbine rotor, the adapter 20 transmits the torque of the drive assembly 30 to the main shaft of the wind turbine rotor, and at the same time realizes the low-speed rotation of the rotor through its rotatable characteristics.

[0063] The drive assembly 30 is mounted on the support assembly 10 and is in transmission cooperation with the adapter assembly 20 to provide rotational power to the adapter assembly 20 so as to drive the adapter assembly 20 to rotate around the rotation axis, thereby driving the wind turbine rotor to rotate around the rotation axis.

[0064] The locking assembly 40 includes a supporting body 41, a locking component 42, and a detection element 43. The supporting body 41 can be a rectangular steel plate or an aluminum alloy frame, fixedly mounted to the support assembly 10 by bolts. The locking component 42 is movably disposed on the supporting body 41 to switch between a locked state and an unlocked state. In the locked state, the locking component 42 limits the transition assembly 20 to prevent it from rotating. In the unlocked state, the locking component 42 releases the limit on the transition assembly 20, and the drive assembly 30 drives the transition assembly 20 to rotate around its rotation axis. The detection element 43 is fixedly disposed on the supporting body 41 and electrically connected to the main control system of the drive assembly 30. It is used to detect the position signal of the locking component 42 and feed the position signal back to the main control system. In other words, the detection element 43 achieves safe interlocking control of the drive assembly 30's operation through state perception and signal feedback.

[0065] In the initial state (i.e., unlocked state): the locking component 42 is in the disengaged position, meaning it is not inserted into the adapter assembly 20. At this time, the drive assembly 30 receives a start command from the main control system, such as a "rotation" command. The drive assembly 30 moves, transmitting torque to the adapter assembly 20, causing it to rotate at low speed around the rotation axis. The adapter assembly 20 drives the wind turbine rotor to rotate synchronously, used for adjusting blade angles (e.g., calibrating zero position) or testing the flexibility of the transmission system.

[0066] When the rotor rotates to the target position (such as the blade zero position), the operator pushes the locking component 42 to move and inserts the adapter assembly 20. At this time, the locking component 42 locks the adapter assembly 20 through mechanical limiting, preventing the rotor from rotating accidentally due to accidental contact or wind force, and providing a safe environment for blade installation.

[0067] Unlocking operation: After the blade is installed, the operator pulls the handle of the locking component 42 in the opposite direction to disengage the locking component 42 from the adapter assembly 20; the detection element 43 detects the disengagement signal of the locking component 42 and outputs an "unlock" signal to the main control system, and the main control system restores the motor power supply to the drive assembly 30; the drive assembly 30 restarts, and the motor drives the adapter assembly 20 to rotate for subsequent rotor dynamic balancing tests or transmission system debugging.

[0068] If the operator forgets to pull the locking component 42 out, the locking assembly 40 will activate its abnormal protection:

[0069] If the operator starts the drive assembly 30 without removing the locking component 42, the detection element 43 will not be able to detect the unlocking signal. The unlocking signal is the signal that the locking component 42 is in the unlocked position. The main control system will forcibly cut off the motor power supply to prevent the motor of the drive assembly 30 from burning out the windings due to sudden load changes, or the gear transmission mechanism from generating impact loads due to jamming, which could cause problems such as wear and breakage of the gear teeth.

[0070] It is understood that the turning device provided in this embodiment of the present invention improves the structure of the locking component 42 and adds a bearing body 41 to the support component 10. A detection element 43 is installed on the bearing body 41. By detecting the position signal of the locking component 42 and feeding it back to the main control system of the drive component 30, the safety interlock control of the drive component 30 is realized: when the locking component 42 is not released (still in the locked state), the detection element 43 does not detect the signal that the locking component 42 is in the unlocked position. The main control system forcibly locks the drive component 30 (such as cutting off the motor power supply) and prohibits it from starting. This avoids the motor of the drive component 30 from burning out the windings due to sudden load changes, or the gear transmission mechanism from generating impact loads due to jamming, causing problems such as wear and breakage of the gear teeth.

[0071] In actual operation, the activation and deactivation of the locking component 42 both rely on manual operation and memorization by the operator. Since the operation involves switching between inserting and removing the locking component 42, environmental interference (such as insufficient light) or human negligence often leads to abnormal scenarios where the driving component 30 is activated before the locking component 42 is fully deactivated. At this time, the locking component 42 still maintains mechanical contact with the adapter component 20, causing the driving component 30 to be overloaded and damaged. This can result in the motor windings burning out due to sudden load changes (exceeding the rated torque), or the gear transmission mechanism generating impact loads due to jamming, causing wear and breakage of the gear teeth, and the risk of locking pin failure. In other words, the locking pin and the limiting hole may deform or break due to forced force, losing their limiting function and causing a safety accident of unexpected rotor rotation.

[0072] Therefore, the turning device provided in this utility model embodiment can automatically detect the state of the locking component 42 and actively intervene in the operation of the drive component 30, ensuring that the drive component 30 cannot be started when the locking component 42 is not disengaged, thereby avoiding equipment damage and safety accidents. It effectively solves the problem of the drive component 30 being started due to human negligence without the locking component 42 being disengaged, which causes damage to the drive component 30, and can improve the safety and reliability of the turning device operation.

[0073] Figure 4 This is a structural schematic diagram of the turning device provided in another embodiment of the present utility model.

[0074] Continue reading Figure 2 And see also Figure 4 In some embodiments of this utility model, the support component 10 is provided with at least one first limiting hole 11, that is, one, two or three first limiting holes 11 can be provided. Preferably, two first limiting holes 11 are provided, and the two first limiting holes 11 are symmetrically arranged with the center of the support component 10 as the center of symmetry.

[0075] The supporting body 41 is located at the position of the first limiting hole 11. Therefore, the number of supporting bodies 41, as well as the number of detection elements 43 and locking components 42 disposed on the supporting body 41, are equal to the number of first limiting holes 11. When two first limiting holes 11 are symmetrically arranged, a locking assembly 40 (supporting body 41, detection elements 43 and locking components 42 disposed on the supporting body 41) is provided at the position of each first limiting hole 11.

[0076] The adapter component 20 is provided with multiple second limiting holes 21. The center of each second limiting hole 21 is eccentrically arranged relative to the rotation axis of the adapter component 20. The multiple second limiting holes 21 are distributed in a circumferential array along the circumference of the adapter component 20, such as one second limiting hole 21 every 10° or every 15°, to ensure that the locking position is symmetrically covered in the circumferential direction, so as to meet the diverse angle requirements of different working scenarios, such as the angle misalignment adjustment when installing multiple blades.

[0077] In the locked state, the locking component 42 is inserted into the first limiting hole 11 and one of the second limiting holes 21 to prevent the adapter assembly 20 from rotating. Since the position of the second limiting hole 21 changes with the rotation of the adapter assembly 20, one first limiting hole 11 can only be aligned with one second limiting hole 21 at a specific angle at a time. The locking component 42 is inserted into the first limiting hole 11 and the second limiting hole 21 at the same time, completely restricting the rotational freedom of the adapter assembly 20 through mechanical interference. At this time, even if the drive assembly 30 receives a start command, it cannot overcome the locking resistance and force rotation. It must first remove the locking component 42 before it can be unlocked and rotated.

[0078] In the unlocked state, the locking component 42 disengages from the corresponding second limiting hole 21, while the locking component 42 remains inserted in the first limiting hole 11 and does not interfere with the state of the adapter component 20. At this time, the rotational freedom of the adapter component 20 is not restricted, and the drive component 30 can output torque normally to drive the adapter component 20 to rotate around the rotation axis.

[0079] In some optional embodiments of this utility model, a guide sleeve is formed on the side of the support component 10, the locking member 421 of the locking component 42 is inserted into the guide sleeve, and the bearing body 41 is disposed at the location of the guide sleeve.

[0080] In the locked state, the locking member 421 of the locking component 42 is inserted into one of the second limiting holes 21 aligned with the center of the guide sleeve to prevent the adapter assembly 20 from rotating. In the unlocked state, the locking member 421 of the locking component 42 disengages from the corresponding second limiting hole 21, and the locking component 42 remains within the guide sleeve, without interfering with the state of the adapter assembly 20.

[0081] Continue reading Figure 3In some embodiments of this utility model, the locking component 42 includes a locking element 421 and a trigger element 422. The locking element 421 can be a pin or a stop. The design of the trigger element 422 must satisfy the requirement that it moves with the movement of the locking element 421. Therefore, the trigger element 422 is fixedly disposed on the locking element 421 and located at the tail end of the locking element 421. Specifically, a threaded hole can be opened at the tail end of the locking element 421, and the trigger element 422 can be fixed to the tail end of the locking element 421 by a threaded connection. The displacement of the trigger element 422 is driven by the movement of the locking element 421. For example, when the operator pushes the handle of the locking element 421, the tail end of the locking element 421 drives the trigger element 422 to move synchronously.

[0082] In some alternative embodiments, the trigger 422 may also be a protrusion on the locking member 421, that is, the trigger 422 and the locking member 421 are integrally formed.

[0083] In the locked state, the locking member 421 is inserted into the first limiting hole 11 and one of the second limiting holes 21; in the unlocked state, the locking member 421 disengages from the corresponding second limiting hole 21; the trigger member 422 is used to trigger the detection element 43 to generate a position signal of the locking member 421, and to feed the position signal back to the main control system.

[0084] Continue reading Figure 3 In some embodiments of this utility model, the supporting body 41 is provided with a first limiting groove 411 and a second limiting groove 412. The first limiting groove 411 and the second limiting groove 412 are arranged horizontally on the supporting body 41 at intervals, and the interval distance is designed according to the unlocking stroke of the locking member 421. The first limiting groove 411 is a positioning groove in the locked state, and the second limiting groove 412 is a positioning groove in the unlocked state.

[0085] The trigger 422 not only moves with the movement of the locking member 421, but also needs to be accurately embedded in the first limiting groove 411 and the second limiting groove 412. Therefore, the trigger 422 is preferably a cylindrical rod, such as a bolt, with one end of the rod fixedly connected to the tail of the locking member 421 by a thread, and the other end extending above the limiting groove.

[0086] Furthermore, to ensure displacement accuracy, a guide groove 413 can be provided on the supporting body 41. The guide groove 413 extends along the moving path of the trigger 422, and the trigger 422 slides within the guide groove 413 to prevent deviation of the moving path. The first limiting groove 411 and the second limiting groove 412 are both connected to the guide groove 413. Essentially, the first limiting groove 411, the second limiting groove 412, and the guide groove 413 form an inverted "U" shape, achieving coordinated guidance and limiting.

[0087] In some embodiments of this utility model, the detection element 43 is located at the position of the second limiting groove 412. In the locked state, the trigger 422 moves to the first limiting groove 411; in the unlocked state, the trigger 422 moves to the second limiting groove 412 to trigger the detection element 43 to generate a signal that the locking element 421 is in the unlocked position.

[0088] In this embodiment of the present invention, the detection element 43 is only located at the position of the second limiting groove 412, and is used to continuously detect the position of the trigger 422. When the locking element 421 is completely withdrawn from the locking position (such as being pulled out from the second limiting hole 21 of the adapter 20 and reaching the unlocking position), the detection element 43 generates an "unlocked" signal and feeds it back to the main control system.

[0089] The main control system will only release the lock on the drive component 30 after receiving the "unlocked" signal, allowing the drive component 30 to drive the adapter component 20 to rotate around the rotation axis, such as restoring power to the motor. If no unlock signal is detected, such as if the locking member 421 is stuck in the semi-locked position, the main control system will prohibit the drive component 30 from operating, to prevent the adapter component 20 from being forcibly rotated before the lock is fully released, which could damage the motor of the drive component 30.

[0090] In some embodiments of this utility model, the detection element 43 is located at the positions of the first limiting groove 411 and the second limiting groove 412, respectively.

[0091] In the locked state, the trigger 422 moves to the first limiting groove 411 to trigger the detection element 43 located in the first limiting groove 411 to generate a signal that the locking element 421 is in the locked position. That is, the detection element 43 located in the first limiting groove 411 is mainly used to confirm the completion and reliability of the locking action, and feeds back the signal to the main control system of the drive assembly 30 to prevent the drive assembly 30 from starting erroneously and to ensure the safety of equipment and personnel.

[0092] In the unlocked state (locking member 421 disengages from the limiting position of the adapter assembly 20), trigger member 422 moves to the second limiting groove 412 to trigger the detection element 43 located in the second limiting groove 412 to generate a signal that the locking member 421 is in the unlocked position. That is, in the unlocked state, the main function of the detection element 43 located in the second limiting groove 412 is to confirm that the locking restriction has been released and to provide the necessary conditions for the drive assembly 30 to start.

[0093] Specifically, the detection element 43 located in the second limiting groove 412 continuously detects the position of the trigger 422. When the locking element 421 is completely withdrawn from the locking position, such as being pulled out from the second limiting hole 21 of the adapter assembly 20 and reaching the unlocking position, the detection element 43 generates an "unlocked" signal and feeds it back to the main control system.

[0094] The main control system will only release the lock on the drive component 30 after receiving an "unlocked" signal, allowing the drive component 30 to drive the adapter component 20 to rotate around the rotation axis, such as when the motor power supply is restored. If no unlock signal is detected, such as when the locking member 421 is stuck in the semi-locked position, the main control system will prohibit the drive component 30 from operating, to prevent the adapter component 20 from being forcibly rotated before the lock is fully released, which could damage the motor of the drive component 30.

[0095] Essentially, this embodiment of the invention establishes a safety interlocking logic for locking and driving by setting detection elements 43 in both the locked position (where the first limiting groove 411 is located) and the unlocked position (where the second limiting groove 412 is located). Through the state perception and signal feedback of the detection elements 43, a safe interlocking logic for locking and driving is constructed: in the locked state, the detection element 43 ensures reliable locking and prevents the driving component 30 from malfunctioning; in the unlocked state, the detection element 43 ensures the restriction is lifted, allowing the driving component 30 to start safely. This configuration not only meets the core requirement of operational safety for the turning gear and avoids mechanical damage from accidental triggering, but also improves control accuracy through signal feedback.

[0096] It should be noted that in this embodiment of the invention, the detection element 43 includes any one of a proximity switch, a photoelectric sensor, and a limit switch. The proximity switch is a non-contact detection element 43 that triggers a signal by detecting changes in the electromagnetic field, dielectric constant, or magnetism of the trigger element 422. The photoelectric sensor detects objects by emitting and receiving (or reflecting) light; the trigger element 422 needs to block or reflect the light to achieve signal output. The limit switch is based on mechanical contact: when the trigger element 422 physically collides with the mechanical contact of the limit switch, the contact moves via a spring or linkage mechanism, pushing the internal microswitch to open or close, outputting an electrical signal.

[0097] Specifically, proximity switches may include inductive proximity switches or magnetic proximity switches.

[0098] Inductive proximity switches utilize the electromagnetic field generated by a high-frequency oscillation circuit. When the trigger 422 approaches, the electromagnetic field energy is absorbed or reflected, causing a change in the oscillation frequency and triggering the switch to output a signal. At this time, the trigger 422 is a metal part made of metal.

[0099] The magnetic proximity switch is based on the Hall effect. The trigger element 422 can be a permanent magnet. When the permanent magnet or magnetic material is close, the magnetic field changes the output voltage of the Hall element, triggering a signal.

[0100] Specifically, photoelectric sensors include through-beam photoelectric sensors or reflective photoelectric sensors.

[0101] When the photoelectric sensor is a through-beam photoelectric sensor, the transmitter and receiver are placed separately, and light passes through the detection area between them; when the trigger 422 blocks the light, the receiver receives no signal, triggering the switch. In this case, the trigger 422 can be a trigger rod or a stop with a certain rigidity.

[0102] When the photoelectric sensor is a reflective photoelectric sensor, the transmitter and receiver are integrated at the same end. Light is received by the receiver after being reflected by the reflector. When the trigger 422 blocks the reflection path, the receiver receives no signal and triggers the switch. In this case, the trigger 422 can be a trigger rod or a stop with a certain rigidity.

[0103] Figure 5 This is a side view of the turning device provided in an embodiment of the present utility model.

[0104] Continue reading Figure 1 And see also Figure 5 In some embodiments of this utility model, the adapter assembly 20 includes an adapter gear 22 and a mounting flange 23. The adapter gear 22 is rotatably mounted on the support assembly 10 via a rotating pair of double-row deep groove ball bearings or tapered roller bearings. The axial clearance of the bearings is adjusted by adjusting shims to ensure flexible rotation without jamming. The mounting flange 23 is fixedly mounted on the adapter gear 22 by bolts, and the mounting flange 23 is rigidly connected to the wind turbine hub flange by bolts to synchronously drive the wind turbine rotor to rotate.

[0105] The second limiting hole 21 is opened on the adapter gear 22. Multiple second limiting holes 21 are distributed in a circumferential array along the adapter gear 22 to cooperate with the locking member 421 (such as a pin) of the locking assembly 40 to realize the locking and positioning of the adapter assembly 20.

[0106] Continue reading Figure 1 , Figure 4 and Figure 5 In some embodiments of this utility model, at least three drive components 30 are provided, and the at least three drive components 30 are arranged in a circular array along the axis of the mounting component, that is, there are at least three drive components 30, and there can also be four. Figure 1 , Figure 4 and Figure 5 Each example will be used to illustrate the point.

[0107] Each drive assembly 30 includes a drive element 31 and a reducer 32. The drive element 31 can be a motor, which transmits rotational motion to the reducer 32 through a transmission mechanism. The reducer 32 is bolted to the flange on the side of the support assembly 10 opposite to the adapter assembly 20. The input shaft of the reducer 32 is connected to the drive element 31, and the output shaft of the reducer 32 is provided with a drive gear, which is in transmission engagement with the adapter gear 22.

[0108] Specifically, the motor can be a low-speed, high-torque motor, which directly outputs low-speed torque to avoid efficiency loss caused by multi-stage reduction; the reducer further enhances the torque output capability.

[0109] Continue reading Figure 2 and Figure 5 In some embodiments of this utility model, the support assembly 10 includes a first support plate 12 and a second support plate 13 arranged at intervals and in parallel. A drive assembly 30 is mounted on the first support plate 12, and the output shaft of the drive assembly 30 passes through the first support plate 12 and the second support plate 13. The bearing body 41 is fixedly mounted on the first support plate 12, and the adapter assembly 20 is rotatably mounted on the second support plate 13. This arrangement makes the structure of the turning gear more compact.

[0110] Furthermore, the turning device also includes a positioning element 50, which passes through the first support plate 12 and the second support plate 13 to position the first support plate 12 and the second support plate 13. The positioning element 50 can be a positioning pin.

[0111] This utility model also provides a wind turbine generator set, which includes a main control system, an alarm module and a turning device of any of the above embodiments. The alarm module is electrically connected to the main control system and is used to issue an alarm prompt. The main control system is used to receive the signal from the detection element 43 and to control the operation of the drive component 30.

[0112] The alarm module may include at least one of a buzzer and a warning light; that is, the alarm module may include only a buzzer for audible alarm notification, or only a warning light for visual alarm notification, or both a buzzer and a warning light for simultaneous audible and visual alarm notification.

[0113] Essentially, the wind turbine generator set provided in this embodiment of the present invention improves the structure of the locking component 42 in the turning gear, adds a supporting body 41 to the support assembly 10, installs a detection element 43 on the supporting body 41, detects the position signal of the locking component 42 and feeds it back to the main control system of the drive assembly 30; and adds an alarm module electrically connected to the main control system to realize the safety interlock control of the drive assembly 30: when the locking component 42 is not disengaged (still in the locked state), the detection element 43 does not detect the signal that the locking component 42 is in the unlocked position, the main control system forcibly locks the drive assembly 30 (e.g., cuts off the motor power supply) to prevent it from starting, and at the same time, the main control system triggers the alarm module (e.g., buzzer, warning light) to remind the operator that the locking component 42 has not been disengaged and that the disengagement operation must be completed before the operation can continue.

[0114] By detecting the status of the locking component 421 and coordinating with the alarm module, the drive assembly 30 cannot be started when the locking component 42 is not disengaged, thereby avoiding equipment damage and safety accidents. This effectively solves the problem of the drive assembly 30 being started due to human negligence and the locking component 42 not being disengaged, which can improve the safety and reliability of the turning gear operation.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A turning gear characterized by, include: Support components; An adapter assembly is rotatably mounted on the support assembly; A drive component, mounted on the support component and in transmission cooperation with the adapter component, is used to drive the adapter component to rotate around the rotation axis; A locking assembly includes a supporting body, a locking component, and a detection element, wherein: the supporting body is fixedly mounted on the support assembly; the locking component is movably disposed on the supporting body to switch between a locked state and an unlocked state; in the locked state, the locking component limits the transition assembly to prevent the transition assembly from rotating; in the unlocked state, the locking component releases the limitation on the transition assembly, and the drive assembly drives the transition assembly to rotate around the rotation axis; the detection element is fixedly disposed on the supporting body and electrically connected to the main control system of the drive assembly, for detecting the position signal of the locking component and feeding the position signal back to the main control system.

2. A turning gear as claimed in claim 1, characterised in that The support component has at least one first limiting hole, and the bearing body is located at the position of the first limiting hole; The adapter assembly has multiple second limiting holes, the center of each second limiting hole is eccentrically arranged relative to the rotation axis of the adapter assembly, and the multiple second limiting holes are distributed in a circular array along the circumference of the adapter assembly. In the locked state, the locking component is inserted into the first limiting hole and one of the second limiting holes to prevent the adapter assembly from rotating; in the unlocked state, the locking component disengages from the corresponding second limiting hole, and the driving component drives the adapter assembly to rotate around the rotation axis.

3. A turning gear as claimed in claim 2, characterised in that The locking component includes a locking element and a trigger element, wherein the trigger element is fixedly disposed on the locking element; In the locked state, the locking member is inserted into the first limiting hole and one of the second limiting holes; in the unlocked state, the locking member disengages from the corresponding second limiting hole. The trigger is used to trigger the action of the detection element to generate a position signal for the locking element.

4. A turning gear as claimed in claim 3, characterised in that The supporting body is provided with a first limiting groove and a second limiting groove. The first limiting groove and the second limiting groove are arranged at intervals along the horizontal direction. The first limiting groove is a positioning groove in the locked state, and the second limiting groove is a positioning groove in the unlocked state. The detection element is located at the position of the second limiting groove; or, the detection element is located at the positions of the first limiting groove and the second limiting groove, respectively. In the locked state, the trigger moves to the first limiting groove to trigger the detection element located in the first limiting groove to generate a signal that the locking member is in the locked position; In the unlocked state, the trigger moves to the second limiting groove to trigger the detection element located in the second limiting groove to generate a signal that the locking member is in the unlocked position.

5. A turning gear as claimed in claim 4, wherein The supporting body is provided with a guide groove, which extends along the moving path of the trigger element; Both the first limiting groove and the second limiting groove are connected to the guide groove.

6. The turning gear of claim 3 wherein, The detection element includes any one of a proximity switch, a photoelectric sensor, and a limit switch; When the detection element includes a proximity switch, the trigger element includes a metal component or a permanent magnet; When the detection element includes a photoelectric sensor and a limit switch, the triggering element includes a trigger rod or a stop.

7. A turning gear according to any one of claims 2 to 6, characterised in that, The adapter component includes: The adapter gear is rotatably mounted on the support assembly via a rotating joint; The mounting flange is fixedly mounted on the adapter gear and is suitable for connecting the wind turbine rotor; The second limiting hole is formed on the adapter gear.

8. A turning gear as claimed in claim 7, characterised in that The drive assembly includes at least three components, which are arranged in a circular array along the axis of the mounting assembly. Each drive assembly includes: Drive components; A speed reducer is fixedly installed on the side of the support assembly away from the adapter assembly. The input shaft of the speed reducer is connected to the drive component, and the output shaft of the speed reducer is provided with a drive gear. The drive gear is in transmission engagement with the adapter gear.

9. The turning gear device according to any one of claims 1 to 6, characterized in that, The support assembly includes a first support plate and a second support plate that are spaced apart and arranged in parallel. The drive assembly is mounted on the first support plate, and the output shaft of the drive assembly passes through the first support plate and the second support plate; the bearing body is fixedly mounted on the first support plate. The adapter assembly is rotatably mounted on the second support plate.

10. A wind turbine generator set, characterized in that, The device includes a main control system, an alarm module, and a turning device as described in any one of claims 1 to 9. The alarm module is electrically connected to the main control system and is used to issue an alarm prompt. The main control system is used to receive signals from the detection element and to control the operation of the drive assembly.

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