Variable pitch carrier ring

Abstract

The utility model discloses a variable pitch carrier ring which comprises a ring body, the surface of the ring body is provided with a plurality of insertion holes and six-edge installation holes communicated with the insertion holes, a hexagonal backing ring is arranged in each six-edge installation hole, three oil injection pipes are installed on the surface of the ring body, supporting rings are arranged in the oil injection pipes, and springs and sliding blocks are sequentially placed above the supporting rings. A hexagonal backing ring is clamped through a hexagonal mounting hole in a ring body, when a bolt penetrates through an insertion hole, the head of the bolt is clamped by the hexagonal backing ring, it is ensured that the bolt cannot rotate, at the moment, a nut is in threaded connection with the bolt, and the bolt is inserted into the oil filling pipe through the nut. When the nut is screwed, the bolt cannot rotate, installation of the ring body and the hub is more convenient, the distance between the valve rod and the supporting ring is controlled, the oil injection speed is controlled, other maintenance points of the wind driven generator can be checked during lubricating oil injection, and the maintenance efficiency of the wind driven generator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbines, in particular to a variable pitch carrier ring. Background Art

[0002] The variable pitch system of a wind turbine is used to adjust the angle of the blades facing the wind and improve the power generation efficiency. The rotating part of the variable pitch system consists of the outer ring of the variable pitch bearing and the inner ring of the variable pitch bearing. After the surface of the outer ring of the variable pitch bearing is punched, it is assembled with the hub using bolts and nuts.

[0003] At present, after the bolts used for installing the outer ring of the pitch bearing pass through the outer ring of the pitch bearing, the heads of the bolts are located outside the outer ring of the pitch bearing. In the process of tightening the nuts and bolts, two handles are needed to hold the nuts and bolts and twist them to prevent the nuts and bolts from rotating in the same direction. Such installation scheme needs to be improved in terms of operational convenience and installation efficiency. In addition, when adding lubricating oil to the outer ring of the pitch bearing, a hole is generally drilled in the outer ring of the pitch bearing and an oil filling pipe is inserted into the hole. When maintaining the wind turbine, since there are many items to be checked, the oil filling pipe is not stable enough when inserted into the hole and the oil filling is not easy to control, and it needs to be supervised by staff, and the maintenance efficiency is not high enough. Utility Model Content

[0004] The purpose of the utility model is to provide a variable pitch carrier ring to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a pitch carrier ring, comprising a ring body, a plurality of insertion holes and hexagonal mounting holes connected to the insertion holes are provided on the surface of the ring body, and a hexagonal gasket is provided inside the hexagonal mounting hole;

[0006] The hexagonal washer is used to limit the rotation of the bolt. When tightening the bolt and nut, only one wrench is needed, making assembly easier.

[0007] Three oil filling pipes are installed on the surface of the ring body, a support ring is arranged inside the oil filling pipe, and a spring and a sliding block are placed above the support ring in sequence, and the sliding block is provided with an oil discharge hole, a valve stem inserted into the support ring is arranged on the lower surface of the sliding block, and a filling bucket is screwed on the upper end of the oil filling pipe;

[0008] Twist the filling bucket to control the distance between the valve stem and the support ring, which can control the oil injection speed and allow the lubricating oil to slowly and fully lubricate the ring body.

[0009] Furthermore, a clamping groove is provided on the inner wall of the hexagonal mounting hole, a clamping ring is provided on the surface of the hexagonal gasket, and the clamping ring is connected to the clamping groove, which can prevent the hexagonal gasket from falling out of the hexagonal mounting hole. An anti-slip strip is provided on the inner wall of the hexagonal gasket to clamp the bolt.

[0010] Furthermore, a sealing cover is rotatably connected to the side of the filling bucket, and the sealing cover is sleeved on the outside of the filling bucket to block debris and prevent the debris from entering the filling bucket.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The hexagonal washer is clamped through the hexagonal mounting hole on the ring body. When the bolt passes through the insertion hole, the head of the bolt is clamped by the hexagonal washer to ensure that the bolt does not rotate. At this time, the nut is screwed to the bolt. When the nut is tightened, the bolt does not rotate, making the installation of the ring body and the wheel hub more convenient.

[0013] (2) By twisting the filling bucket, its movement can be controlled so that the spring can push the sliding block and the valve stem to move. After the valve stem is separated from the support ring, the lubricating oil can flow through the support ring to the inner wall of the ring body, thereby controlling the distance between the valve stem and the support ring and the oil filling speed. During the filling of the lubricating oil, other maintenance points of the wind turbine can be checked to improve the maintenance efficiency of the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the ring body of the utility model;

[0015] Figure 2 It is a side sectional view of the ring body of the utility model;

[0016] Figure 3 For this utility model Figure 2 The schematic diagram of the structure is placed at A in the middle;

[0017] Figure 4 It is a structural schematic diagram of the connection between the filling bucket and the oil filling pipe of the utility model.

[0018] In the figure: 1. Ring body; 2. Hexagonal gasket; 3. Socket; 4. Hexagonal mounting hole; 5. Snap groove; 6. Snap ring; 7. Anti-slip strip; 8. Filling bucket; 9. Cover; 10. Oil filling pipe; 11. Valve stem; 12. Support ring; 13. Spring; 14. Sliding block; 15. Oil drain hole; 16. Mounting port. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example:

[0021] See also Figure 1-4The utility model provides a technical solution: a pitch carrier ring, comprising a ring body 1, a plurality of insertion holes 3 and a hexagonal mounting hole 4 connected to the insertion hole 3 are arranged on the surface of the ring body 1, a hexagonal washer 2 is arranged inside the hexagonal mounting hole 4, the size of the hexagonal washer 2 corresponds to the size of the head of the bolt, the head of the bolt can be clamped, and the hexagonal washer 2 can prevent the bolt and the ring body 1 from wearing each other;

[0022] Three oil filling pipes 10 are installed on the surface of the ring body 1. A support ring 12 is arranged inside the oil filling pipe 10, and a spring 13 and a sliding block 14 are placed above the support ring 12 in sequence. The sliding block 14 is provided with an oil discharge hole 15. The spring 13 is used to push up the sliding block 14, so that the sliding block 14 can drive the valve stem 11 to move. The lower surface of the sliding block 14 is provided with a valve stem 11 inserted into the support ring 12. When the valve stem 11 blocks the support ring 12, it can prevent the lubricating oil from flowing to the inner wall of the ring body 1. A filling bucket 8 is screwed on the upper end of the oil filling pipe 10. The filling bucket 8 is large in size and can prevent the lubricating oil from dripping to the outside when replenishing the lubricating oil.

[0023] In this embodiment, if Figure 3 As shown, the inner wall of the hexagonal mounting hole 4 is provided with a clamping groove 5, and the surface of the hexagonal gasket 2 is provided with a clamping ring 6, and the clamping ring 6 is connected to the clamping groove 5. After the clamping ring 6 is clamped by the clamping groove 5, the stability of the hexagonal gasket 2 installed in the hexagonal mounting hole 4 can be improved, and when the ring body 1 is moved, the hexagonal gasket 2 can be prevented from falling off.

[0024] In this embodiment, if Figure 4 As shown, the side of the filling bucket 8 is rotatably connected with a cover 9, and the cover 9 is sleeved on the outside of the filling bucket 8. The size of the cover 9 is larger than the filling bucket 8 to prevent impurities from falling directly into the filling bucket 8 and preventing impurities from wearing the ring body 1.

[0025] In this embodiment, if Figure 3 As shown, the inner wall of the hexagonal gasket 2 is provided with an anti-slip strip 7, which is used to clamp the head of the bolt. When the bolt is inserted into the socket 3, it is not easy to loosen or shake.

[0026] In this embodiment, if Figure 2 As shown, the surface of the ring body 1 is provided with three mounting openings 16 , and the three mounting openings 16 are arranged in a triangle shape. The oil filling pipe 10 is connected to the mounting openings 16 , so that the lubricating oil can fully flow to the inner wall of the ring body 1 to fully lubricate the ring body 1 .

[0027] Specifically, when using, when the ring body 1 is assembled with the wheel hub, the insertion hole 3 on the ring body 1 is aligned with the hole on the wheel hub, the bolt is inserted into the insertion hole 3, and the head of the bolt is stuck into the hexagonal washer 2 to achieve pre-fixation of the bolt. When the nut is screwed onto the bolt, the hexagonal mounting hole 4 can prevent the bolt from slipping, and the nut can be tightened using a wrench;

[0028] When lubricating the ring body 1, open the cover 9, twist the filling bucket 8 to move it upward, the spring 13 pushes the sliding block 14, and the sliding block 14 drives the valve stem 11 to move upward, thereby controlling the distance between the valve stem 11 and the support ring 12. The greater the distance, the faster the lubricating oil flows, and the smaller the distance, the slower the lubricating oil flows. When maintaining the wind turbine, the staff can insert the oil pipe into the filling bucket 8 to control the slow flow of the lubricating oil. During the filling period, there is no need to keep watching, and other maintenance projects can be carried out at the same time, which is convenient for speeding up the maintenance progress.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pitch carrier ring, comprising a ring body (1), characterized in that: The surface of the ring body (1) is provided with a plurality of insertion holes (3) and a hexagonal mounting hole (4) connected to the insertion hole (3), and a hexagonal gasket (2) is provided inside the hexagonal mounting hole (4); Three oil filling pipes (10) are installed on the surface of the ring body (1), a support ring (12) is provided inside the oil filling pipe (10), a spring (13) and a sliding block (14) are placed in sequence above the support ring (12), and the sliding block (14) is provided with an oil discharge hole (15), a valve stem (11) is provided on the lower surface of the sliding block (14) and is inserted into the support ring (12), and a filling bucket (8) is screwed to the upper end of the oil filling pipe (10).

2. A pitch carrier ring according to claim 1, characterized in that: The inner wall of the hexagonal mounting hole (4) is provided with a clamping groove (5), the surface of the hexagonal gasket (2) is provided with a clamping ring (6), and the clamping ring (6) is connected to the clamping groove (5).

3. A pitch carrier ring according to claim 1, characterized in that: The side of the filling bucket (8) is rotatably connected to a sealing cover (9), and the sealing cover (9) is sleeved on the outside of the filling bucket (8).

4. A pitch carrier ring according to claim 1, characterized in that: The inner wall of the hexagonal gasket (2) is provided with an anti-slip strip (7).

5. A pitch carrier ring according to claim 1, characterized in that: The surface of the ring body (1) is provided with three mounting openings (16), and the three mounting openings (16) are arranged in a triangular shape, and the oil injection pipe (10) is connected to the mounting openings (16).

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