Variable pitch system locking device and wind generating set

Abstract

The utility model provides a variable pitch system locking device and wind generating set, wherein the variable pitch system locking device comprises a guide piece and a lock tooth piece, the guide piece comprises a flange plate, a guide part and a plurality of support rib plates, the guide part is connected with the flange plate, the plurality of support rib plates are located at one side of the guide piece far away from the lock tooth piece, and the guide part is connected with the guide part. The two sides of at least part of the supporting rib plates are connected with the flange plate and the guide part correspondingly. The guide part and the supporting rib plates are sequentially connected end to end to form a surrounding arrangement structure. The strength and stability of the guide part structure are improved through the supporting rib plates, the guide part is prevented from being bent, and the service life of the guide part is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a variable pitch system locking device and a wind power generator set. Background Art

[0002] With the gradual depletion of energy sources like coal and oil, humanity is placing increasing emphasis on the use of renewable energy. Wind energy, as a clean, renewable energy source, is gaining increasing attention worldwide. With the continuous advancement of wind power technology, the use of wind turbines in power systems is increasing. Wind turbines are large-scale devices that convert wind energy into electricity and are typically installed in areas with abundant wind resources.

[0003] The pitch system locking device is mainly used to lock the pitch bearings before replacing the pitch drive system of a wind turbine and performing routine maintenance on the pitch bearings and lubrication system to prevent them from rotating, thereby improving operational efficiency and the safety of maintenance personnel.

[0004] Currently, the flange plate is connected to the hub web, with one end of the guide portion connected to the flange plate and the other end extending toward the pitch bearing. This allows the guide portion to engage with the pitch bearing through a locking tooth, thereby locking the pitch bearing. However, because the guide portion extends away from the locking tooth, it is prone to cantilevering at this location, which can cause the guide portion to bend after long-term use, shortening its service life. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the guide portion of the cantilever in the prior art is prone to bending, and a variable pitch system locking device and a wind turbine generator set are provided.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] The utility model discloses a variable pitch system locking device, the variable pitch system locking device comprising a guide member and a locking tooth member, the guide member comprising a flange plate, a guide portion and a plurality of supporting ribs, the guide portion being connected to the flange plate, the plurality of supporting ribs being located on a side of the guide member away from the locking tooth member, and at least some of the two sides of the supporting ribs being connected to the flange plate and the guide portion respectively;

[0008] The guide portion and the plurality of support ribs are connected end to end in sequence to form a surrounding arrangement structure.

[0009] In this solution, the above-mentioned structural form is adopted to improve the strength and stability of the guide part structure, prevent the guide part from bending, and increase the service life of the guide part.

[0010] Preferably, at least the support ribs close to the guide portion among the plurality of support ribs protrude in a direction away from the center of the arrangement structure.

[0011] In this solution, the above-mentioned structural form is adopted, so that the supporting ribs are distributed along the diffusion direction of the bearing load, further improving the strength and stability of the guide part structure.

[0012] Preferably, the locking tooth member is connected to the guide member and can slide relative to the guide member, thereby cooperating with the pitch bearing to lock the pitch bearing.

[0013] In this solution, the pitch system locking device, using the aforementioned structure, secures the blades in place during wind turbine maintenance or specific operations, thereby preventing accidental rotation of the pitch bearing. This is crucial for ensuring the safe operation of the wind turbine during maintenance or emergencies.

[0014] Preferably, the pitch system locking device further comprises a locking positioning member, which is provided on the locking tooth member and is used to limit the position of the locking tooth member relative to the guide member when the locking tooth member locks the pitch bearing.

[0015] In this solution, the above-mentioned structural form is adopted, and the pitch system locking device can ensure that the position of the blades is fixed during the maintenance or specific operations of the wind turbine, thereby preventing the pitch bearing from rotating accidentally. This is especially important for ensuring the safe operation of the wind turbine during maintenance or emergency situations. The close combination of the guide and the hub web provides a solid support foundation for the locking tooth piece, ensuring that the locking tooth block can accurately engage with the pitch bearing, so that the locking device can significantly improve the safety and maintenance efficiency of the wind turbine, and reduce the risk of equipment damage or safety accidents caused by accidental rotation of the blades. At the same time, it also facilitates the maintenance and overhaul of the wind turbine.

[0016] Preferably, one end of the locking tooth member away from the pitch bearing is connected to a lifting ring screw, and the locking positioning member is connected to the lifting ring screw.

[0017] In this solution, the above-mentioned structural form is adopted to prevent the locking positioning member from being lost.

[0018] Preferably, the locking positioning member includes a fixing portion and a pin spring pin, one end of the fixing portion is suspended in the bail screw, and the other end of the fixing portion is buckled on the pin spring pin and can be detached from the pin spring pin;

[0019] When the locking tooth member locks the pitch bearing, one end of the pin spring pin passes through the locking tooth member and the guide member and is then engaged with the other end of the pin spring pin.

[0020] In this solution, the aforementioned structure allows one end of the fixing portion to be suspended in the bail screw, while the other end is inserted into the pin spring pin, preventing loss of the fixing component and the pin spring pin. One end of the pin spring pin passes through the locking tooth and guide member before engaging with the other end. This improves the locking stability of the pitch system locking mechanism, preventing accidental unlocking due to operational errors or external factors, and thus ensuring the safe operation of the wind turbine.

[0021] Preferably, a first positioning hole is provided on the locking tooth part, and a second positioning hole is provided on the guide part. When the locking tooth part locks the pitch bearing, the first positioning hole and the second positioning hole are at least partially aligned, and the locking positioning part can pass through or disengage from the first positioning hole and the second positioning hole to connect or separate the locking tooth part and the guide part.

[0022] In this solution, the above-mentioned structural form is adopted, and the first positioning hole on the locking tooth part and the second positioning hole on the guide part are penetrated by the locking positioning part, which not only ensures the stability of the locking tooth part during operation, but also improves the reliability of the entire locking device.

[0023] Preferably, the locking tooth part includes a locking tooth block, a handle and a connecting piece, the locking tooth block is provided with an installation cavity with a through hole at one end facing the handle, the handle extends into the installation cavity from the through hole, and one end of the connecting piece passes through the locking tooth block and extends into the installation cavity, and is connected to the handle located in the installation cavity.

[0024] In this solution, the above-mentioned structural form ensures a reliable connection between the handle and the locking tooth block, while also facilitating assembly and maintenance. A through-hole is provided in the locking tooth block to form a mounting cavity into which the handle can be inserted. One end of the connector can pass through the locking tooth block into the mounting cavity and connect to the handle. This structure not only saves space but also increases the stability of the connection. When the pitch system needs to be locked or released, the operator can control the locking tooth block through the handle, while the presence of the connector ensures the accuracy and reliability of the operation.

[0025] Preferably, the locking tooth block includes a first body and a second body, the top of the second body is used to cooperate with the tooth groove of the variable pitch bearing moving ring, the bottom of the second body is connected to the first body, and the first body is adapted to the guide member and is used to produce relative sliding with the guide member.

[0026] In this solution, the aforementioned structure is employed, enabling the locking tooth block to mate with the pitch bearing's moving ring and connect to the guide member through the first and second bodies. The top of the second body mates with the tooth grooves of the pitch bearing's moving ring, thereby locking the moving ring. This locking device significantly improves the safety and maintenance efficiency of wind turbines, reducing the risk of equipment damage or safety accidents caused by accidental blade rotation. The bottom of the second body is connected to the first body, enabling relative sliding between the first body and the guide member to switch between locking and disengaging the second body and the pitch bearing's moving ring.

[0027] Preferably, one of the guide member and the locking tooth member is provided with a guide groove, and the other slides in the guide groove, so that the locking tooth member has a first locking state and a second locking state;

[0028] When the locking tooth member is in the first locking state, the locking tooth member is inserted into the tooth groove of the moving ring of the pitch bearing;

[0029] When the locking tooth member is in the second locking state, the locking tooth member is disengaged from the tooth groove.

[0030] In this solution, the above-mentioned structural form is adopted so that the locking tooth part can slide in the guide groove, thereby realizing the switching between the first locking state and the second locking state. In the first locking state, the locking tooth part is inserted into the tooth groove of the movable ring of the pitch bearing, ensuring that the pitch system can effectively fix the blade when it needs to be locked, preventing it from accidentally rotating, thereby ensuring the safe operation of the wind turbine. At this time, the locking tooth part is tightly engaged with the tooth groove of the movable ring, forming a reliable mechanical connection, ensuring that the blade can maintain a stable position under the influence of wind speed changes or other external factors, avoiding equipment damage or safety hazards caused by rotation. In the second locking state, the locking tooth part is disengaged from the tooth groove, and the pitch system can operate normally.

[0031] Preferably, the guide groove is a dovetail groove.

[0032] In this solution, the above-mentioned structural form is adopted, so that the guide groove has the characteristics of tilting moment bearing capacity and controllable fitting clearance.

[0033] Preferably, a positioning opening is provided on the flange plate, and the guide portion is installed in the positioning opening; and an observation port connected to the positioning opening is also provided on the flange plate.

[0034] In this solution, the aforementioned structure ensures that the locking teeth slide smoothly within the guide grooves and accurately enter both the first and second locked states. In the first locked state, the locking teeth engage with the tooth grooves of the pitch bearing's dynamic ring, forming a robust locking mechanism that prevents blade rotation and ensures wind turbine safety during operation and maintenance. In the second locked state, the locking teeth disengage from the tooth grooves, allowing the pitch system to operate normally. The operation of the pitch system's locking mechanism can be observed through the observation port.

[0035] Preferably, the radial cross-section of the flange plate is a T-shaped boss structure, and the flange plate includes a first plate and a second plate located on one side of the first plate, the diameter of the first plate is larger than the diameter of the second plate; a plurality of bolt connection holes are provided on the circumferential edge of the first plate, and the second plate is located on the inner side of the plurality of bolt connection holes.

[0036] In this solution, the above-mentioned structural form is adopted to increase the structural strength and stability of the flange plate, so that the flange plate can withstand greater loads and pressures.

[0037] The utility model also discloses a wind turbine generator set, which includes the variable pitch system locking device as described in any one of the above items.

[0038] In this solution, the above-mentioned structural form is adopted to apply the variable pitch system locking device to the wind turbine generator set, thereby improving the strength and stability of the guide part structure through the supporting ribs, preventing the guide part from bending, and increasing the service life of the guide part.

[0039] The positive progress effect of this utility model is:

[0040] The support ribs improve the strength and stability of the guide structure, prevent the guide from bending, and increase the service life of the guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a structural schematic diagram of the variable pitch system locking device according to an embodiment of the present utility model (I).

[0042] Figure 2 This is a structural schematic diagram (2) of the variable pitch system locking device according to an embodiment of the present utility model.

[0043] Figure 3 This is a structural schematic diagram (3) of the variable pitch system locking device of an embodiment of the present utility model.

[0044] Figure 4 This is a schematic structural diagram of a locking tooth member according to an embodiment of the present utility model.

[0045] Figure 5 Schematic cross-sectional view of a locking tooth member according to an embodiment of the present invention.

[0046] Figure 6 Schematic diagram of the structure of the guide part of the embodiment of the present utility model.

[0047] Figure 7 This is a schematic structural diagram of the flange plate according to an embodiment of the present invention.

[0048] Figure 8 This is a schematic diagram of the variable pitch system locking device in a working state according to an embodiment of the present utility model.

[0049] Description of reference numerals:

[0050] Hub web 100

[0051] Pitch bearing 200

[0052] Pitch system locking device 1

[0053] Guide 11

[0054] Second positioning hole 111

[0055] Guide groove 112

[0056] Flange plate 113

[0057] Positioning opening 1131

[0058] Observation Port 1132

[0059] Bolt connection hole 1133

[0060] Guide portion 114

[0061] Support rib 115

[0062] First supporting rib 1151

[0063] Second supporting rib 1152

[0064] Lifting hole 11521

[0065] Locking tooth 12

[0066] Locking tooth block 121

[0067] Installation cavity 1211

[0068] Through hole 1212

[0069] First ontology 1213

[0070] Second body 1214

[0071] Handle 122

[0072] First positioning hole 1221

[0073] Connector 123

[0074] Locking locator 13

[0075] Fixing portion 131

[0076] Pin spring pin 132

[0077] Lifting ring screw 14 DETAILED DESCRIPTION

[0078] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0079] like Figures 1 to 8 As shown, this embodiment provides a variable pitch system locking device 1, which includes a guide member 11, a locking tooth member 12, and a locking positioning member 13. The guide member 11 is connected to the hub web 100, and the locking tooth member 12 is used to cooperate with the variable pitch bearing 200. The locking tooth member 12 is connected to the guide member 11 and can slide relative to the guide member 11, thereby cooperating with the variable pitch bearing 200 to lock the variable pitch bearing 200.

[0080] A first positioning hole 1221 is provided on the locking tooth 12, and a second positioning hole 111 is provided on the guide member 11. When the locking tooth 12 locks the pitch bearing 20, the first positioning hole 1221 and the second positioning hole 111 are at least partially aligned, and the locking positioning member 13 can pass through or disengage from the first positioning hole 1221 and the second positioning hole 111 to connect or separate the locking tooth 12 and the guide member 11.

[0081] In this embodiment, the locking tooth member 12 includes a locking tooth block 121, a handle 122, and a connecting member 123. A first positioning hole 1221 is provided at the end of the handle 122 away from the locking tooth member 12. With this structural form, the pitch system locking device 1 can ensure that the position of the blades is fixed during maintenance or specific operations of the wind turbine, thereby preventing the pitch bearing 200 from accidentally rotating. This is particularly important for ensuring the safe operation of the wind turbine during maintenance or emergency situations. The tight integration of the guide member 11 and the hub web 100 provides a solid support base for the locking tooth member 12, ensuring that the locking tooth block 121 can accurately engage with the pitch bearing 200. The locking tooth block 121 and the handle 122 are connected by the connecting member 123, allowing the operator to control the locking or release of the locking tooth block 121 and the pitch bearing 200 by simply operating the handle 122, thereby simplifying the operating process while improving the convenience and accuracy of the operation. The first positioning hole 1221 on the handle 122 and the second positioning hole 111 on the guide member 11, through the locking locator 13, not only ensure the stability of the handle 122 during operation but also enhance the reliability of the entire locking device. Furthermore, the locking device significantly improves the safety and maintenance efficiency of the wind turbine, reducing the risk of equipment damage or safety accidents caused by accidental blade rotation. It also facilitates maintenance and repair of the wind turbine.

[0082] In this embodiment, the connecting member 123 is a set screw. In other embodiments, the connecting member 123 may also be a bolt or other form. The specific form of the connecting member 123 is not limited here. In actual use, the end of the locking tooth block 121 near the handle 122 is provided with a threaded hole for mounting the handle, and the threaded hole is designed with a set screw mounting hole. The front end of the handle 122 is designed with a limiting boss and an external thread structure for mounting with the locking tooth block 121. The external thread of the handle is designed with a set screw positioning groove for installing the set screw. The set screw is used to limit the position of the handle 122 and the locking tooth block 121 and ensure that the two are securely mounted.

[0083] like Figure 2 As shown, the end of the locking tooth part 12 away from the pitch bearing 200 is connected to the lifting ring screw 14. Specifically, in this embodiment, the end of the handle 122 away from the locking tooth block 121 is connected to the lifting ring screw 14, and the locking positioning part 13 is connected to the lifting ring screw 14 to prevent the locking positioning part 13 from being lost.

[0084] During specific use, the bail screw 14 is in a ring shape, so that it is convenient to lock and position the buckle on the bail screw 14 .

[0085] like Figure 2As shown, the locking locator 13 includes a fixing portion 131 and a pin spring pin 132. One end of the fixing portion 131 is suspended in the bail screw 14, while the other end of the fixing portion 131 is inserted into and can be removed from the pin spring pin 132. When the locking tooth member 12 locks the pitch bearing 200, one end of the pin spring pin 132 passes through the first positioning hole 1221 and the second positioning hole 111 before engaging with the other end of the pin spring pin 132. With this structure, one end of the fixing portion 131 is suspended in the bail screw 14, while the other end is inserted into the pin spring pin 132, preventing the fixing portion 131 and the pin spring pin 132 from being lost. The pin spring pin 132, after passing through the first positioning hole 1221 and the second positioning hole 111 and then engaging with the other end, improves the locking stability of the pitch system locking device 1 and prevents accidental unlocking due to operational errors or external factors, thereby ensuring the safe operation of the wind turbine.

[0086] like Figure 5 As shown, a mounting cavity 1211 having a through hole is provided at one end of the locking tooth block 121 facing the handle 122. The handle 122 extends into the mounting cavity 1211 through the through hole. One end of the connector 123 extends through the locking tooth block 121 into the mounting cavity 1211 and connects to the handle 122 located within the mounting cavity 1211. This structural form ensures a reliable connection between the handle 122 and the locking tooth block 121, while also facilitating assembly and maintenance. By providing a through hole in the locking tooth block 121 to form the mounting cavity 1211, the handle 122 can be inserted therein, while one end of the connector 123 can pass through the locking tooth block 121 into the mounting cavity 1211 and connect to the handle 122. This structure not only saves space but also increases the stability of the connection. When the pitch system needs to be locked or released, the operator can control the locking tooth block 121 through the handle 122, while the presence of the connector 123 ensures the accuracy and reliability of the operation.

[0087] In other embodiments, a cavity with an opening may be formed on the handle 122, the locking tooth block 121 may extend from the opening into the cavity, and one end of the connector 123 may pass through the handle 122 and extend into the cavity, connecting to the locking tooth block 121 located in the cavity. Of course, in other embodiments, the locking tooth block 121 and the handle 122 may also be connected in other ways, which are not limited here.

[0088] The locking tooth block 121 includes a first body 1213 and a second body 1214. The top of the second body 1214 is used to cooperate with the tooth groove of the moving ring of the pitch bearing 20. The bottom of the second body 1214 is connected to the first body 1213. The first body 1213 is adapted to the guide member 11 and is used to generate relative sliding with the guide member 11.

[0089] During use, the bottom of the second body 1214 has a shape that matches the guide groove 112. For example, the bottom of the second body 1214 can be dovetail-shaped. The bottom of the second body 1214 can be embedded in the guide groove 112 and can move within the guide groove 112. This prevents the locking tooth member 12 from tipping over and provides guidance for the locking tooth member 12.

[0090] In addition, a through hole 1212 is provided on the locking tooth block 121. When in the second locking state, the locking tooth piece 12 is disengaged from the tooth groove, and the locking tooth piece 12 can slide in the guide groove 112. At this time, the through hole 1212 coincides with the second positioning hole 111 in the axial direction of the second positioning hole 111, and the pin spring pin 132 can pass through the through hole 1212 and the second positioning hole 111, thereby ensuring that the locking tooth piece 12 will not slip out.

[0091] like Figures 4 to 6 As shown, the guide member 11 and the locking tooth member 12 have a guide groove 112, and the other slides in the guide groove 112, so that the locking tooth member 12 has a first locking state and a second locking state. When the locking tooth member 12 is in the first locking state, the locking tooth member 12 is inserted into the tooth groove of the movable ring of the pitch bearing 200; when the locking tooth member 12 is in the second locking state, the locking tooth member 12 is disengaged from the tooth groove. The above structure allows the locking tooth member 12 to slide in the guide groove 112, thereby achieving switching between the first locking state and the second locking state. In the first locking state, the locking tooth member 12 is inserted into the tooth groove of the movable ring of the pitch bearing 200, ensuring that the pitch system can effectively fix the blade when locking is required, preventing it from rotating accidentally, thereby ensuring the safe operation of the wind turbine. At this time, the locking tooth member 12 is tightly engaged with the tooth groove of the movable ring, forming a reliable mechanical connection, ensuring that the blade can maintain a stable position under the influence of wind speed changes or other external factors, avoiding equipment damage or safety hazards caused by rotation. In the second locking state, the locking tooth member 12 is disengaged from the tooth groove, and the pitch system can operate normally.

[0092] like Figure 6 and Figure 7 As shown, the guide member 11 includes a flange plate 113 and a guide portion 114, a guide groove 112 is provided on the guide portion 114, a positioning opening 1131 is provided on the flange plate 113, and the guide portion 114 is installed in the positioning opening 1131. The above-mentioned structural form ensures that the locking tooth member 12 can slide smoothly in the guide groove 112 and accurately reach the first locking state and the second locking state. In the first locking state, the locking tooth member 12 engages with the moving ring tooth groove of the pitch bearing 200 to form a strong locking mechanism to prevent the blades from rotating and ensure the safety of the wind turbine during operation or maintenance. In the second locking state, the locking tooth member 12 is disengaged from the tooth groove, and the pitch system locking device 1 can operate normally.

[0093] In this embodiment, the guide groove 112 is a dovetail groove, which has a structure with overturning moment bearing capacity and controllable fitting clearance. In other embodiments, the guide groove 112 can also be in other forms, and the form of the guide groove 112 is not specifically limited here.

[0094] It should be noted that, during use, multiple bolt holes 1133 are defined along the circumferential edge of the flange plate 113. Multiple bolts engage the corresponding bolt holes 1133 to secure the flange plate 113 to the hub web 100. Multiple sets of threaded holes for lifting and installation are located in the center of the flange plate 113. These threaded holes allow the entire pitch system locking device 1 to be hoisted and installed. The radial cross-section of the flange plate 113 presents a T-shaped boss structure. The flange plate 113 comprises a first plate and a second plate positioned to one side of the first plate, with the first plate having a larger diameter than the second plate. The flange plate 113 is formed with locating notches for installation. Multiple bolt holes 1133 are defined along the circumferential edge of the first plate, with the second plate positioned inwardly of the bolt holes 1133. The flange plate 113 also includes an observation port 1132, which communicates with the locating holes 1131. This port 1132 allows observation of the operation of the pitch system locking device 1.

[0095] like Figure 1 and Figure 3 As shown, the guide member 11 further includes a plurality of support ribs 115 located on a side of the guide member 11 away from the locking tooth member 12. At least some of the support ribs 115 are connected on both sides to the flange plate 113 and the guide portion 114, respectively. This structural form improves the strength and stability of the guide portion 114.

[0096] The guide portion 114 and the plurality of supporting ribs 115 are connected end to end in sequence to form a surrounding arrangement structure, which further improves the strength and stability of the guide portion 114 structure.

[0097] It should be specifically explained that in this embodiment, the encircling arrangement structure is described in detail using the example of three support ribs 115. The three support ribs 115 include two first support ribs 1151 and one second support rib 1152. The two first support ribs 1151 are respectively arranged on both sides of the guide portion 114, and the two first support ribs 1151 are respectively connected to the guide portion 114 and the flange plate 113; the two sides of the second support rib 1152 are respectively connected to the two first support ribs 1151, and the bottom of the second support rib 1152 is connected to the flange plate 113. The guide portion 114 and the two first support ribs 1151 and the one second support rib 1152 form an encircling arrangement structure.

[0098] At least the support ribs 115 close to the guide portion 114 among the multiple support ribs 115 protrude in a direction away from the center of the arrangement structure. The above-mentioned structural form allows the support ribs 115 to be distributed along the diffusion direction of the load, further improving the strength and stability of the guide portion 114 structure. Specifically, the direction of the external force applied to the variable pitch system locking device 1 is in a direction away from the center of the arrangement structure. Therefore, at least the support ribs 115 close to the guide portion 114 among the support ribs 115 protrude in a direction away from the center of the arrangement structure, thereby increasing the structural stability and ability to resist external forces of the variable pitch system locking device 1.

[0099] In this embodiment, the first supporting rib 1151 protrudes away from the center of the arrangement structure. In addition, a hoisting hole 11521 is provided on the second supporting rib 1152 to facilitate hoisting by operators.

[0100] When the variable pitch system locking device 1 of the present application is used, in step one, the locking tooth part is inserted into the guide part 11 along the guide groove 112 from the rear end of the guide part 11 (i.e., the side close to the hub), the fixing part 131 of the locking positioning part 13 is connected with the lifting ring screw 14, the locking tooth part 12 is pushed to the front end of the guide groove 112, and the set screw is installed.

[0101] In step 2, before the entire pitch system locking device 1 is installed, the locking tooth 12 is pulled out, and the pin spring pin 132 of the locking locator 13 is sequentially passed through the first positioning hole 1221 and the through hole 1212 on the locking tooth block 121 to unscrew the set screw and lock the locking tooth 12. This state is also the non-operating state of the pitch system locking device 1, that is, the locking tooth 12 is pulled out.

[0102] Step three: Install the pitch system locking device 1 with the locking tooth 12 pulled out on the hub web 100 with bolts, and tighten the torque.

[0103] Step 4. When the pitch system needs to be locked, pull out the locking locating piece 13, loosen the set screw, push the locking tooth piece 12 into the tooth groove of the inner tooth of the pitch bearing 200, and insert the locking locating piece 13 into the first positioning hole 1221 and the second positioning hole 111 to ensure that the locking tooth piece 12 will not slip out. At this time, the pitch system locking device 1 is in the working state, that is, the lock rack is inserted.

[0104] Step 5. After completing the maintenance work, pull out the anti-lost pin spring and repeat step 2.

[0105] This embodiment also provides a wind turbine generator set, comprising the above-described pitch system locking device 1. By employing the above-described structure, the pitch system locking device 100 is applied to the wind turbine generator set, thereby improving the strength and stability of the guide portion 114 through the support rib 115, preventing the guide portion 114 from bending and increasing the service life of the guide portion 114.

[0106] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A pitch system locking device, characterized in that: The pitch system locking device includes a guide member and a locking tooth member, the guide member includes a flange plate, a guide portion and a plurality of supporting ribs, the guide portion is connected to the flange plate, the plurality of supporting ribs are located on a side of the guide member away from the locking tooth member, and at least some of the supporting ribs are connected to the flange plate and the guide portion on both sides respectively; The guide portion and the plurality of support ribs are connected end to end in sequence to form a surrounding arrangement structure.

2. The pitch system locking device according to claim 1, characterized in that: At least the support ribs close to the guide portion among the plurality of support ribs protrude in a direction away from the center of the arrangement structure.

3. The pitch system locking device according to claim 1, characterized in that: The locking tooth member is connected to the guide member and can slide relative to the guide member, thereby cooperating with the pitch bearing to lock the pitch bearing.

4. The pitch system locking device according to claim 3, characterized in that: The pitch system locking device further includes a locking positioning member, which is provided on the locking tooth member and is used to limit the position of the locking tooth member relative to the guide member when the locking tooth member locks the pitch bearing.

5. The pitch system locking device according to claim 4, characterized in that: One end of the locking tooth component away from the pitch bearing is connected to a lifting ring screw, and the locking positioning component is connected to the lifting ring screw.

6. The pitch system locking device according to claim 5, characterized in that: The locking positioning member includes a fixing portion and a pin spring pin, wherein one end of the fixing portion is suspended in the bail screw, and the other end of the fixing portion is buckled on the pin spring pin and can be disengaged from the pin spring pin; When the locking tooth member locks the pitch bearing, one end of the pin spring pin passes through the locking tooth member and the guide member and is then engaged with the other end of the pin spring pin.

7. The pitch system locking device according to claim 4, characterized in that: A first positioning hole is provided on the locking tooth part, and a second positioning hole is provided on the guide part. When the locking tooth part locks the pitch bearing, the first positioning hole and the second positioning hole are at least partially aligned, and the locking positioning part can pass through or disengage from the first positioning hole and the second positioning hole to connect or separate the locking tooth part and the guide part.

8. The pitch system locking device according to claim 3, characterized in that: The locking tooth part includes a locking tooth block, a handle and a connecting piece. The locking tooth block is provided with an installation cavity with a through hole at one end facing the handle. The handle extends into the installation cavity from the through hole. One end of the connecting piece passes through the locking tooth block and extends into the installation cavity, and is connected to the handle located in the installation cavity.

9. The pitch system locking device according to claim 8, characterized in that: The locking tooth block includes a first body and a second body, the top of the second body is used to cooperate with the tooth groove of the variable pitch bearing moving ring, the bottom of the second body is connected to the first body, and the first body is adapted to the guide member and is used to generate relative sliding with the guide member.

10. The pitch system locking device according to claim 3, characterized in that: One of the guide member and the locking tooth member is provided with a guide groove, and the other slides in the guide groove, so that the locking tooth member has a first locking state and a second locking state; When the locking tooth member is in the first locking state, the locking tooth member is inserted into the tooth groove of the moving ring of the pitch bearing; When the locking tooth member is in the second locking state, the locking tooth member is disengaged from the tooth groove.

11. The pitch system locking device according to claim 10, characterized in that: The guide groove is a dovetail groove.

12. The pitch system locking device according to claim 1, characterized in that: The flange plate is provided with a positioning opening, and the guide portion is installed in the positioning opening; the flange plate is also provided with an observation port connected to the positioning opening.

13. The pitch system locking device according to claim 1, characterized in that: The radial cross-section of the flange plate is a T-shaped boss structure, and the flange plate includes a first plate and a second plate located on one side of the first plate, the diameter of the first plate is larger than the diameter of the second plate; a plurality of bolt connection holes are provided on the circumferential edge of the first plate, and the second plate is located on the inner side of the plurality of bolt connection holes.

14. A wind turbine generator set, characterized in that: The wind turbine generator set includes the pitch system locking device according to any one of claims 1-13.

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