Reinforcing device for variable-pitch bearing oil collecting bottle of wind turbine generator

Abstract

The utility model relates to the technical field of wind turbine generator set variable pitch bearing operation and maintenance appliances, in particular to a wind turbine generator set variable pitch bearing oil collection bottle reinforcing device which comprises a connecting plate and a clamping structure, one end of the connecting plate is fixedly connected with a variable pitch bearing through a connecting accessory, the other end of the connecting plate is connected with the clamping structure, and the clamping structure is connected with the connecting accessory. And the clamping structure is clamped at the periphery of the oil collecting bottle. When the oil collecting device is used, after the oil collecting bottle is in butt joint with an oil discharge hole of the variable-pitch bearing, the clamping structure is used for clamping the periphery of the oil collecting bottle, the clamping structure clamps the oil collecting bottle to prevent the oil collecting bottle from falling off from the clamping structure, and then one end of the connecting plate is fixedly installed on the variable-pitch bearing through the connecting accessory. And therefore, the mounting position of the oil collecting bottle on the variable pitch bearing is fixed, the mounting and reinforcing effect on the oil collecting bottle is improved, and the oil collecting bottle is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine variable pitch bearing operation and maintenance equipment, and more specifically, to a wind turbine variable pitch bearing oil collecting bottle reinforcement device. Background Art

[0002] The variable pitch bearing of a wind turbine is one of the rotating parts used in the rotation of the blades of a wind turbine. The variable pitch bearing is installed at the connection between the root of the blade and the hub through fixing bolts and fixing nuts. The main function of the variable pitch bearing is to support and bear the weight of the blade and the thrust of the wind on the blade, while enabling the blade to rotate flexibly. It requires regular refueling and maintenance. During regular refueling and hub rotation, waste oil needs to be discharged. Therefore, it is necessary to install an oil collecting bottle to collect waste oil from the oil drain hole of the bearing. Usually, an oil collecting pipe is set in the oil collecting bottle, and the oil collecting pipe is connected to the oil drain hole to collect waste oil. However, the long-term rotation of the variable pitch bearing causes the variable pitch bearing oil collecting bottle to fall and the limit to get stuck. The wind turbine variable pitch failure rate is high, the unit reliability is low, and the power loss is serious.

[0003] The prior art discloses an oil collector with a slewing support on a wind turbine hub, comprising a clamping unit comprising a clamping arm, a clamping head, a tension beam, a screw, a sliding beam, a sliding rod, and a fixed plate. The clamping head is bolted to the end of the clamping arm, the tension beam is connected to the middle portion of the clamping arm, the screw is fixed to the lower end of the sliding beam, the sliding beam and the sliding rod slide in engagement, and the end of the sliding rod is welded to the fixed plate. When the clamping unit and oil collector of this solution are used to collect oil from a variable pitch bearing, the oil collector is clamped by the clamping head in conjunction with a hook provided on the lug at the top of the oil collector. However, during prolonged rotation or due to operational errors, the hook can easily detach from the lug, causing the oil collector to fall. Utility Model Content

[0004] The purpose of the utility model is to overcome the defect of the prior art that the oil collecting bottle is easy to fall, and to provide a wind turbine variable pitch bearing oil collecting bottle reinforcement device to improve the installation and reinforcement effect of the oil collecting bottle and prevent the oil collecting bottle from falling.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A wind turbine pitch bearing oil collecting bottle reinforcement device is provided, comprising a connecting plate and a clamping structure, one end of the connecting plate is fixedly connected to the pitch bearing through a connecting accessory, the other end of the connecting plate is connected to the clamping structure, and the clamping structure is clamped on the outer circumference of the oil collecting bottle.

[0007] The utility model relates to a wind turbine variable pitch bearing oil collecting bottle reinforcement device. When in use, the oil collecting bottle is docked with the oil drain hole of the variable pitch bearing, and then the clamping structure is used to clamp the outer periphery of the oil collecting bottle. The clamping structure clamps the oil collecting bottle to prevent the oil collecting bottle from falling off the clamping structure. Then, one end of the connecting plate is fixedly installed on the variable pitch bearing through the connecting accessories, and the installation position of the oil collecting bottle on the variable pitch bearing is fixed, thereby improving the installation reinforcement effect of the oil collecting bottle and preventing the oil collecting bottle from falling.

[0008] Furthermore, a first connecting block is provided at one end of the connecting plate, and a second connecting block is provided at the other end of the connecting plate. The first connecting block is fixedly connected to the variable pitch bearing via the connecting accessory, and the second connecting block is connected to the clamping structure via a connecting assembly. The clamping structure is clamped to the outer periphery of the oil collecting bottle and then connected to the second connecting block via the connecting assembly, thereby clamping the oil collecting bottle with the clamping structure. The first connecting block, connecting plate, second connecting block, clamping structure, and oil collecting bottle are then connected into a whole. Subsequently, the first connecting block is connected to the variable pitch bearing using the connecting accessory to achieve the overall installation and fixation of the device.

[0009] Furthermore, the clamping structure includes a reinforcement ring and a locking plate. The reinforcement ring is sleeved on the outer circumference of the oil collecting bottle. The reinforcement ring is provided with an adjustment groove. The two ends of the adjustment groove extend along the axial direction of the reinforcement ring to the two end faces of the reinforcement ring. The reinforcement ring is connected to the second connecting block and the locking plate on both sides of the adjustment groove. The locking plate and the second connecting block are fixedly connected by the connecting assembly. After the reinforcement ring is sleeved on the outer circumference of the oil collecting bottle from one end and moved to an appropriate position along the axial direction of the oil collecting bottle, the locking plate is connected and locked to the second connecting block by the connecting assembly. During the locking process, the width of the adjustment groove gradually decreases until the inner wall of the reinforcement ring is tightly attached to the oil collecting bottle to clamp the oil collecting bottle.

[0010] Furthermore, the second connecting block is provided with a second through hole, the locking plate is provided with a third through hole corresponding to the second through hole, and the second through hole and the third through hole are connected by the connecting assembly.

[0011] Furthermore, the connection assembly includes a locking bolt and a locking nut. The locking bolt is passed through the third through hole and the second through hole and is threadedly connected to the locking nut. After the reinforcement ring is sleeved from one end of the oil collecting bottle onto the outer circumference of the oil collecting bottle and moved axially to an appropriate position, one end of the locking bolt passes through the third through hole and the second through hole in sequence and is threadedly connected to the locking nut. The locking nut is then tightened to clamp the reinforcement ring against the oil collecting bottle.

[0012] Furthermore, the central axis of the reinforcement ring is perpendicular to the central axis of the pitch bearing. The reinforcement ring clamps the outer circumference of the oil collecting bottle, and the central axis of the reinforcement ring is coaxial with the central axis of the oil collecting bottle. The central axis of the oil collecting bottle is perpendicular to the central axis of the pitch bearing. The oil collecting bottle is installed horizontally, further preventing the oil collecting bottle from falling off.

[0013] Furthermore, the first connecting block is provided with a first through hole for a fixing bolt to pass through, the connecting accessory is a fastening nut, the fastening nut is threadedly connected to the fixing bolt, and the first connecting block is clamped between the fastening nut and the fixing nut.

[0014] Furthermore, the connecting plate includes a first bending plate, a second bending plate and a third bending plate, the first connecting block is connected to one end of the first bending plate to form a first turning portion, the other end of the first bending plate is connected to one end of the second bending plate to form a second turning portion, the other end of the second bending plate is connected to one end of the third bending plate to form a third turning portion, and the other end of the third bending plate is connected to one end of the second connecting block, the first step formed by the end face of the fixing nut and the side wall of the fixing nut cooperates with the first turning portion, the second step formed by the side wall of the fixing nut and the end face of the pitch bearing cooperates with the second turning portion, and the third step formed by the end face of the pitch bearing and the side wall of the pitch bearing cooperates with the third turning portion.

[0015] Furthermore, it also includes an oil guide pipe, which is arranged at one end of the oil collecting bottle and is threadedly connected to the oil drain hole of the pitch bearing.

[0016] Furthermore, the oil drain hole of the pitch bearing is provided with an internal thread, and the oil guide tube is provided with an external thread that mates with the internal thread. Aligning the oil guide tube with the oil drain hole, one end of the oil guide tube is screwed into the oil drain hole via the mating of the external and internal threads, thereby securing one end of the oil collecting bottle to the pitch bearing. A clamping structure is then used to clamp the outer periphery of the other end of the oil collecting bottle, and the clamping structure is fixedly connected to the pitch bearing via a connecting plate, thereby securing the other end of the oil collecting bottle to the pitch bearing. By securing the oil collecting bottle at two locations, the installation and reinforcement of the oil collecting bottle can be improved.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The oil collecting bottle is clamped by the clamping structure and installed and fixed by the connecting plate, thereby improving the installation and reinforcement effect of the oil collecting bottle and preventing the oil collecting bottle from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the wind turbine pitch bearing oil collecting bottle reinforcement device in use according to the embodiment of the utility model;

[0020] Figure 2 This is a structural schematic diagram of a wind turbine pitch bearing oil collecting bottle reinforcement device according to an embodiment of the present utility model;

[0021] Figure 3 This is a structural diagram of the connecting plate in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the oil collecting bottle in an embodiment of the present utility model.

[0023] In the accompanying drawings: 1-connecting plate; 11-first connecting block; 111-first through hole; 12-second connecting block; 121-second through hole; 13-first bending plate; 14-second bending plate; 15-third bending plate; 2-clamping structure; 21-reinforcement ring; 211-adjusting groove; 22-locking plate; 3-connecting assembly; 31-locking bolt; 32-locking nut; 4-connecting accessories; 5-oil guide pipe; 6-oil collecting bottle; 7-pitch bearing; 8-fixing bolt; 9-fixing nut. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Example 1

[0027] This embodiment is the first embodiment of the wind turbine pitch bearing oil collecting bottle reinforcement device. Figure 1 、 Figure 2As shown, it includes a connecting plate 1 and a clamping structure 2. One end of the connecting plate 1 is fixedly connected to the pitch bearing 7 through a connecting accessory 4, and the other end of the connecting plate 1 is connected to the clamping structure 2. The clamping structure 2 is clamped on the outer periphery of the oil collecting bottle 6.

[0028] When using the above-mentioned wind turbine variable pitch bearing oil collecting bottle reinforcement device, after the oil collecting bottle 6 is docked with the oil drain hole of the variable pitch bearing 7, the clamping structure 2 is used to clamp the outer periphery of the oil collecting bottle 6. The clamping structure 2 clamps the oil collecting bottle 6 to prevent the oil collecting bottle 6 from falling off the clamping structure 2, and then one end of the connecting plate 1 is fixedly installed on the variable pitch bearing 7 through the connecting accessory 4, thereby fixing the installation position of the oil collecting bottle 6 on the variable pitch bearing 7, thereby improving the installation reinforcement effect of the oil collecting bottle 6 and preventing the oil collecting bottle 6 from falling.

[0029] like Figure 2 、 Figure 3 As shown, a first connecting block 11 is provided at one end of the connecting plate 1, and a second connecting block 12 is provided at the other end of the connecting plate 1. The first connecting block 11 is fixedly connected to the pitch bearing 7 via the connecting accessory 4, and the second connecting block 12 is connected to the clamping structure 2 via the connecting assembly 3. During implementation, the clamping structure 2 is clamped to the outer periphery of the oil collecting bottle 6 and connected to the second connecting block 12 via the connecting assembly 3, thereby clamping the oil collecting bottle 6 by the clamping structure 2. The first connecting block 11, the connecting plate 1, the second connecting block 12, the clamping structure 2, and the oil collecting bottle 6 are connected into a whole. Subsequently, the first connecting block 11 is connected to the pitch bearing 7 using the connecting accessory 4 to achieve the overall installation and fixation of the device.

[0030] like Figure 2 As shown, the clamping structure 2 includes a reinforcement ring 21 and a locking plate 22. The reinforcement ring 21 is sleeved around the outer circumference of the oil collecting bottle 6 and defines an adjustment groove 211. The reinforcement ring 21 has end faces formed at its two axial ends. The ends of the adjustment groove 211 extend axially to the two end faces of the reinforcement ring 21. The reinforcement ring 21 is connected to the second connecting block 12 and the locking plate 22 on either side of the adjustment groove 21. The locking plate 22 is fixedly connected to the second connecting block 12 via the connecting assembly 3. During operation, the reinforcement ring 21 is sleeved around the outer circumference of the oil collecting bottle 6 from one end and moved axially to an appropriate position. The locking plate 22 is then connected to the second connecting block 12 and locked via the connecting assembly 3. During the locking process, the width of the adjustment groove 211 gradually decreases until the inner wall of the reinforcement ring 21 abuts against the oil collecting bottle 6, thereby clamping the bottle 6. It should be noted that the locking plate 22 and the reinforcement ring 21 can be an integrally formed structure, which can improve production efficiency, reduce the use of connecting parts or assembly processes such as welding, and reduce production costs; at the same time, the integrally formed structure can enhance the overall strength and safety.

[0031] The inner wall surface of the reinforcement ring 21 is provided with an anti-wear pad. Specifically, the anti-wear pad is a rubber pad with good elasticity and wear resistance. When the locking plate 22 is connected and locked with the second connecting block 12, the reinforcement ring 21 clamps the oil collecting bottle 6. The anti-wear pad can prevent the reinforcement ring 21 and the oil collecting bottle 6 from wearing while ensuring the clamping effect.

[0032] like Figure 3 As shown, the second connecting block 12 is provided with a second through hole 121, the locking plate 22 is provided with a third through hole corresponding to the second through hole 121, and the second through hole 121 and the third through hole are connected by a connecting component 3. Specifically, the connecting component 3 includes a locking bolt 31 and a locking nut 32, as shown in FIG. Figure 2 As shown, the locking bolt 31 is inserted through the third and second through holes 121 and is threadedly connected to the locking nut 32. During operation, the reinforcement ring 21 is sleeved around the outer circumference of the oil collecting bottle 6 from one end and moved axially along the oil collecting bottle 6 to an appropriate position. Then, one end of the locking bolt 31 sequentially passes through the third and second through holes 121 and is threadedly connected to the locking nut 32. The locking nut 32 is tightened, so that the reinforcement ring 21 clamps the oil collecting bottle 6.

[0033] The central axis of the reinforcement ring 21 is perpendicular to the central axis of the pitch bearing 7. During operation, the reinforcement ring 21 clamps the outer periphery of the oil collecting bottle 6. The central axis of the reinforcement ring 21 is coaxial with the central axis of the oil collecting bottle 6. The central axis of the oil collecting bottle 6 is perpendicular to the central axis of the pitch bearing 7. The oil collecting bottle 6 is installed horizontally, further preventing the oil collecting bottle 6 from falling off.

[0034] like Figure 4 As shown, it also includes an oil guide pipe 5, which is provided at one end of the oil collecting bottle 6, and the oil guide pipe 5 is threadedly connected to the oil drain hole of the pitch bearing 7. Specifically, the oil drain hole of the pitch bearing 7 is provided with an internal thread, and the oil guide pipe 5 is provided with an external thread that cooperates with the internal thread. During implementation, the oil guide pipe 5 is aligned with the oil drain hole, and one end of the oil guide pipe 5 is screwed into the oil drain hole through the cooperation of the external thread and the internal thread, so that the connection between one end of the oil collecting bottle 6 and the pitch bearing 7 can be fixed, and then the outer periphery of the other end of the oil collecting bottle 6 is clamped by the clamping structure 2, and the clamping structure 2 is fixedly connected to the pitch bearing 7 by the connecting plate 1, so that the connection between the other end of the oil collecting bottle 6 and the pitch bearing 7 can be fixed, as shown in FIG. Figure 1 As shown, by fixing the oil collecting bottle 6 at two places, the installation and reinforcement effect of the oil collecting bottle 6 can be improved, and the oil collecting bottle 6 can be further prevented from falling off, so that the oil collecting bottle 6 can collect waste oil for a long time and reduce the pitch failure rate.

[0035] Example 2

[0036] This embodiment is the second embodiment of the wind turbine pitch bearing oil collecting bottle reinforcement device. This embodiment is similar to the first embodiment, except that Figure 3As shown, the first connecting block 11 is provided with a first through hole 111 for the fixing bolt 8 to pass through, the connecting accessory 4 is a fastening nut, the fastening nut is threadedly connected to the fixing bolt 8, and the first connecting block 11 is clamped between the fastening nut and the fixing nut 9. The pitch bearing 7 is installed at the connection between the root of the blade and the hub through the fixing bolt 8 and the fixing nut 9. In this embodiment, after the clamping structure 2 clamps the oil collecting bottle 6, the first through hole 111 on the first connecting block 11 is aligned with the fixing bolt 8 for installation, and then the first connecting block 11 is clamped between the fastening nut and the fixing nut 9 through the fastening nut. This can achieve the fixed installation of the connecting plate 1, the clamping structure 2 and the oil collecting bottle 6, and the original mounting accessories of the pitch bearing 7 are used for fixation, which simplifies the structure of the reinforcement device of this embodiment and facilitates installation.

[0037] Example 3

[0038] This embodiment is the third embodiment of the wind turbine pitch bearing oil collecting bottle reinforcement device. This embodiment is similar to the second embodiment, except that Figure 2 、 Figure 3 As shown, the connecting plate 1 includes a first bending plate 13, a second bending plate 14 and a third bending plate 15, the first connecting block 11 is connected to one end of the first bending plate 13 to form a first turning portion, the other end of the first bending plate 13 is connected to one end of the second bending plate 14 to form a second turning portion, the other end of the second bending plate 14 is connected to one end of the third bending plate 15 to form a third turning portion, and the other end of the third bending plate 15 is connected to one end of the second connecting block 12, the first step formed by the end face of the fixing nut 9 and the side wall of the fixing nut 9 cooperates with the first turning portion, the second step formed by the side wall of the fixing nut 9 and the end face of the pitch bearing 7 cooperates with the second turning portion, and the third step formed by the end face of the pitch bearing 7 and the side wall of the pitch bearing 7 cooperates with the third turning portion. During implementation, the first turning part cooperates with the first step, and the top of the fixing nut 9 is used to support the first connecting block 11, and prevent the first connecting block 11 from being too long and broken during long-term operation; the second turning part and the third turning part are arranged to adapt to the first turning part, and at the same time prevent the second bending plate 14 from being too long and broken during long-term operation, thereby enhancing the structural reliability of the connecting plate 1, and the third bending plate 15 can extend the connecting plate 1 to an appropriate position, so that the oil collecting bottle 6 remains horizontally installed when the clamping structure 2 clamps the oil collecting bottle 6.

[0039] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A wind turbine pitch bearing oil collecting bottle reinforcement device, characterized in that: It comprises a connecting plate (1) and a clamping structure (2), one end of the connecting plate (1) is fixedly connected to a pitch bearing (7) via a connecting accessory (4), the other end of the connecting plate (1) is connected to the clamping structure (2), and the clamping structure (2) is clamped on the outer periphery of an oil collecting bottle (6).

2. The wind turbine pitch bearing oil collecting bottle reinforcement device according to claim 1, characterized in that: One end of the connecting plate (1) is provided with a first connecting block (11), and the other end of the connecting plate (1) is provided with a second connecting block (12); the first connecting block (11) is fixedly connected to the pitch bearing (7) via the connecting attachment (4), and the second connecting block (12) is connected to the clamping structure (2) via a connecting assembly (3).

3. The wind turbine pitch bearing oil collecting bottle reinforcement device according to claim 2, characterized in that: The clamping structure (2) comprises a reinforcing ring (21) and a locking plate (22); the reinforcing ring (21) is sleeved on the outer periphery of the oil collecting bottle (6); the reinforcing ring (21) is provided with an adjusting groove (211); the two ends of the adjusting groove (211) respectively extend along the axial direction of the reinforcing ring (21) to the two end faces of the reinforcing ring (21); the reinforcing ring (21) is respectively connected to the second connecting block (12) and the locking plate (22) on both sides of the adjusting groove (211); the locking plate (22) and the second connecting block (12) are fixedly connected via the connecting assembly (3).

4. The wind turbine pitch bearing oil collecting bottle reinforcement device according to claim 3, characterized in that: The second connecting block (12) is provided with a second through hole (121), the locking plate (22) is provided with a third through hole corresponding to the second through hole (121), and the second through hole (121) and the third through hole are connected via the connecting assembly (3).

5. The wind turbine pitch bearing oil collecting bottle reinforcement device according to claim 4, characterized in that: The connecting assembly (3) comprises a locking bolt (31) and a locking nut (32); the locking bolt (31) is passed through the third through hole and the second through hole (121) and is threadedly connected to the locking nut (32).

6. The wind turbine pitch bearing oil collecting bottle reinforcement device according to claim 3, characterized in that: The central axis of the reinforcement ring (21) is perpendicular to the central axis of the pitch bearing (7).

7. The wind turbine pitch bearing oil collecting bottle reinforcement device according to claim 2, characterized in that: The first connecting block (11) is provided with a first through hole (111) for a fixing bolt (8) to pass through, the connecting accessory (4) is a fastening nut, the fastening nut is threadedly connected to the fixing bolt (8), and the first connecting block (11) is clamped between the fastening nut and the fixing nut (9).

8. The wind turbine pitch bearing oil collecting bottle reinforcement device according to claim 7, characterized in that: The connecting plate (1) includes a first bending plate (13), a second bending plate (14) and a third bending plate (15); the first connecting block (11) is connected to one end of the first bending plate (13) to form a first turning portion; the other end of the first bending plate (13) is connected to one end of the second bending plate (14) to form a second turning portion; the other end of the second bending plate (14) is connected to one end of the third bending plate (15) to form a third turning portion; the other end of the third bending plate (15) is connected to one end of the second connecting block (12); a first step formed by the end face of the fixing nut (9) and the side wall of the fixing nut (9) cooperates with the first turning portion; a second step formed by the side wall of the fixing nut (9) and the end face of the pitch bearing (7) cooperates with the second turning portion; and a third step formed by the end face of the pitch bearing (7) and the side wall of the pitch bearing (7) cooperates with the third turning portion.

9. The wind turbine pitch bearing oil collecting bottle reinforcement device according to any one of claims 1 to 8, characterized in that: It also includes an oil guide pipe (5), which is arranged at one end of the oil collecting bottle (6) and is threadedly connected to the oil drain hole of the pitch bearing (7).

10. The wind turbine pitch bearing oil collecting bottle reinforcement device according to claim 9, characterized in that: The oil drain hole of the pitch bearing (7) is provided with an internal thread, and the oil guide pipe (5) is provided with an external thread matching the internal thread.

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