Torsion arm connecting structure of gearbox casing of wind generating set

Abstract

The utility model discloses a wind generating set gearbox body torque arm connecting structure, which belongs to the technical field of wind power generation, and comprises a case, an output shaft is mounted on one side of a gear set, a fixing plate is fixedly connected to one side of the case, and the fixing plate is fixedly connected to the other side of the case. Two limiting sliding grooves are formed in the top of the fixing plate, the top of the fixing plate is slidably connected with a torque arm part, a fixing mechanism is arranged in the torque arm part, a butt joint block is fixedly connected to the inner side of the torque arm part, and a limiting mechanism corresponding to the butt joint block is arranged in the case. By means of the fixing mechanism, after the torque arm piece is preliminarily limited, a worker only needs to rotate the rotating block and continuously rotate the rotating block to enable the threaded pipe to enter the interior of the machine box, installation work of the torque arm piece can be completed, and compared with an installation mode of using a positioning pin and a plurality of screws, efficiency is greatly improved, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to the torque arm connection structure of wind turbine gearbox. Background Technology

[0002] In wind turbine generator sets, the gearbox is a core component. The performance and reliability of the gearbox are crucial to the operating efficiency and stability of the entire wind turbine generator set. As an important part of the gearbox, the torsion arm connection structure undertakes the key task of connecting the gearbox housing with other components. It must not only withstand the huge torque and dynamic load generated by the gearbox during operation, but also adapt to complex working environments such as strong winds, vibrations, and temperature changes. Therefore, the design and performance of the torsion arm connection structure directly affect the overall performance and reliability of the gearbox.

[0003] Traditional torsion arm connections still use multiple locating pins for positioning and multiple screws for fixing. During installation, multiple locating pins need to be precisely inserted into the corresponding pin holes to achieve initial positioning, which requires high installation accuracy and a lot of operation time. After that, multiple screws are tightened one by one, which is quite cumbersome, especially inside the limited space of the wind turbine generator set, where the operation is even more difficult, resulting in low overall installation efficiency and hindering the needs of workers to quickly install and replace equipment.

[0004] Therefore, there is an urgent need to provide a torque arm connection structure for wind turbine gearboxes to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a torque arm connection structure for the gearbox of a wind turbine generator set.

[0006] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: a torque arm connection structure for a wind turbine generator gearbox, including a housing, a gear set installed inside the housing, an output shaft installed on one side of the gear set, a fixing plate fixedly connected to one side of the housing, two limiting grooves opened on the top of the fixing plate, and a torque arm component slidably connected to the top of the fixing plate.

[0007] The torque arm has a fixing mechanism inside, and a docking block is fixedly connected to the inner side of the torque arm. The chassis has a limiting mechanism corresponding to the docking block inside.

[0008] The present invention is further configured such that a shock-absorbing rubber pad is installed on the connection surface between the torque arm and the chassis.

[0009] Through the above technical solutions, the wind turbine generator set will vibrate due to the instability of the wind during operation, and the gearbox will also vibrate and impact during transmission. The shock-absorbing rubber pad has good elasticity and damping characteristics, which can effectively absorb and buffer these vibrations and impacts, reduce their transmission between the torque arm and the chassis, reduce the fatigue wear of components caused by vibration, and extend the service life of components.

[0010] The present invention is further configured such that: the fixing mechanism includes a mounting ring slidably connected inside the torque arm component; two limiting strips are fixedly connected to the outer wall of the mounting ring; a limiting groove is formed on the inner wall of the mounting ring; a rotating ring is rotatably connected to the inner wall of the mounting ring; a limiting ring is fixedly connected to the outer wall of the rotating ring; a rotating block is fixedly connected to the outer side of the rotating ring; a threaded tube is fixedly connected to the inner side of the rotating ring; and a bearing is installed on the outer wall of the output shaft.

[0011] With the above technical solution, when the torque arm slides towards the chassis, and the threaded tube begins to contact the outer wall of the chassis, as the torque arm continues to move, the threaded tube will begin to slide out against the rotating ring and the mounting ring. During the sliding of the mounting ring, the limiting strip can limit the sliding range of the mounting ring within the torque arm, preventing excessive sliding and inaccurate installation position. It also plays a certain guiding role, making the sliding of the mounting ring more stable and accurate. When the torque arm fully contacts the outer surface of the chassis, the mounting ring has also moved to its maximum extent. At this point, the operator only needs to rotate the rotating ring using the rotating block. The limiting groove inside the mounting ring will also limit the movement trajectory of the rotating ring, ensuring that the rotating ring can rotate normally. While the rotating ring is rotating, it will also drive the threaded tube to rotate, causing it to continuously enter the threaded hole inside the chassis until the threaded tube is completely inside the chassis. At this point, the mounting ring will also be completely inside the torque arm, completing the fixed installation of the torque arm.

[0012] The present invention is further configured such that: the inner wall of the torque arm is provided with a sliding groove, and the outer wall of the limiting strip is attached to and slides against the inner wall of the sliding groove.

[0013] Through the above technical solution, the sliding groove provides a precise movement trajectory for the limiting strip, so that the sliding of the mounting ring inside the torque arm has a clear guiding effect. This ensures that the mounting ring moves along the designed direction and prevents it from shifting or shaking during installation or use. This ensures that the mounting ring and other connected components can be accurately positioned in the predetermined position, which is beneficial to improving the assembly accuracy and stability of the entire mechanism.

[0014] The present invention is further configured such that: the inside of the chassis is provided with a threaded groove corresponding to the threaded pipe.

[0015] Through the above technical solution, the threaded pipe and the threaded groove on the chassis can form a tight threaded connection. This connection method can provide a large axial force, firmly connecting the fixing mechanism and the chassis together, ensuring that the connection will not easily loosen even when subjected to external forces such as vibration and impact during the operation of the wind turbine generator set, thereby ensuring the stability and reliability of the entire transmission system.

[0016] The present invention is further configured such that: the limiting mechanism includes a sliding strip slidably connected inside the chassis, a pressing block is fixedly connected to the top of the sliding strip, a fixing block is fixedly connected to one side of the sliding strip, two connecting strips are rotatably connected to the outer wall of the fixing block, a connecting block is rotatably connected to the other end of each of the two connecting strips, a limiting block is fixedly connected to one side of each of the two connecting blocks, and a limiting spring is fixedly connected to the outer end of each of the two limiting blocks.

[0017] With the above technical solution, when the torque arm is fully inserted into the housing, the limiting block, under the elastic force of its connected limiting spring, will enter the interior of the torque arm's mating block, thus limiting and locking the torque arm and preventing it from moving easily. Meanwhile, the connecting strips on the two limiting blocks will jointly push against the sliding strip, causing it to move upwards. At this point, the pressing block above the sliding strip will move a corresponding distance. When it is necessary to contact the limiting block, the operator only needs to press the pressing block. The pressing block drives the sliding strip to slide inside the housing. The sliding of the sliding strip causes the fixing block to move synchronously. The movement of the fixing block causes the two connecting strips rotatably connected to it to rotate. The rotation of the connecting strips, in turn, causes the connecting block rotatably connected to the other end to move. The movement of the connecting block causes the limiting block fixed on one side to extend outwards, allowing the limiting block to slide out of the mating block and no longer limit the mating block. At this point, simply rotating the rotating block allows the threaded tube to detach from the housing, enabling the torque arm to be removed for replacement.

[0018] The present invention is further configured such that the two limiting blocks are symmetrical in structure and are slidably connected inside the docking block.

[0019] Through the above technical solution, the symmetrical limiting block can apply a uniform and symmetrical limiting force to the limited component within the mating block. This helps to ensure that the limited component is subject to the same limiting effect in all directions, avoiding displacement, tilting or local wear due to uneven force, thereby more effectively maintaining the correct position and posture of the component and improving the accuracy and stability of the limiting.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model designs a limiting mechanism. The limiting spring force pushes the limiting block into the docking block, forming an initial limit on the torque arm. As the limiting block moves, the connecting strips on the two limiting blocks slide against the sliding strip, causing the pressing block to move synchronously. When it is necessary to contact the limiting, the operator only needs to press the pressing block. During the movement of the sliding strip, the connecting strips cause the two limiting blocks to slide out of the docking block, thus no longer limiting the docking block. The operation is simple and quick.

[0022] 2. With the fixing mechanism, after the torque arm is initially positioned, the operator only needs to rotate the rotating block to continuously rotate the threaded tube into the machine housing to complete the installation of the torque arm. Compared with the installation method using positioning pins and multiple screws, the efficiency is greatly improved and the operation is also simple. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 for Figure 1 A cross-sectional view;

[0025] Figure 3 This is a schematic diagram of the torsion arm component of this utility model;

[0026] Figure 4 This is a schematic diagram of the fixing mechanism of this utility model;

[0027] Figure 5 This is a schematic diagram of the limiting mechanism of this utility model.

[0028] In the diagram: 1. Chassis; 2. Gear set; 3. Output shaft; 4. Fixing plate; 5. Limiting slide groove; 6. Torque arm component; 7. Fixing mechanism; 701. Mounting ring; 702. Limiting strip; 703. Limiting groove; 704. Rotating ring; 705. Limiting ring; 706. Rotating block; 707. Threaded pipe; 708. Bearing; 8. Connecting block; 9. Limiting mechanism; 901. Sliding strip; 902. Pressing block; 903. Fixing block; 904. Connecting strip; 905. Connecting block; 906. Limiting block; 907. Limiting spring. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0030] Please see Figure 1 and Figure 2The gearbox torque arm connection structure of the wind turbine generator set includes a chassis 1, a gear set 2 installed inside the chassis 1, an output shaft 3 installed on one side of the gear set 2, a fixed plate 4 fixedly connected to one side of the chassis 1, two limiting grooves 5 opened on the top of the fixed plate 4, a torque arm 6 slidably connected to the top of the fixed plate 4, and a shock-absorbing rubber pad installed on the connection surface between the torque arm 6 and the chassis 1. When the wind turbine generator set is running, it will vibrate due to the instability of the wind, and the gearbox will also vibrate and impact during the transmission process. The shock-absorbing rubber pad has good elasticity and damping characteristics, which can effectively absorb and buffer these vibrations and impacts, reduce their transmission between the torque arm 6 and the chassis, reduce the fatigue wear of the components caused by vibration, and extend the service life of the components.

[0031] like Figure 1 - Figure 4 The torque arm 6 has an internal fixing mechanism 7, which includes a mounting ring 701 slidably connected inside the torque arm 6. Two limiting strips 702 are fixedly connected to the outer wall of the mounting ring 701. A sliding groove is formed on the inner wall of the torque arm 6, and the outer wall of the limiting strips 702 slides against the inner wall of the sliding groove. The sliding groove provides a precise movement trajectory for the limiting strips 702, giving the sliding of the mounting ring 701 within the torque arm 6 a clear guiding effect. This ensures that the mounting ring 701 moves along the designed direction, preventing it from shifting or shaking during installation or use. This ensures that the mounting ring 701 and other connected components can be accurately positioned in the predetermined position, improving the assembly accuracy and stability of the entire mechanism. A limiting groove 703 is formed on the inner wall of the mounting ring 701. A rotating ring 704 is rotatably connected to the inner wall of the mounting ring 701. A limit ring 705 is fixedly connected to the outer wall of the rotating ring 704. A rotating block 706 is fixedly connected to the outer side of the rotating ring 704. A threaded tube 707 is fixedly connected to the inner side of the rotating ring 704. The inside of the housing 1 has a threaded groove corresponding to the threaded tube 707. The threaded tube 707 and the threaded groove on the housing 1 cooperate to form a tight threaded connection. This connection method can provide a large axial force, firmly connecting the fixing mechanism 7 and the housing 1 together. This ensures that even if subjected to external forces such as vibration and impact during the operation of the wind turbine generator set, the connection will not easily loosen, thereby ensuring the stability and reliability of the entire transmission system. A bearing 708 is installed on the outer wall of the output shaft 3, and a mating block 8 is fixedly connected to the inner side of the torque arm 6.

[0032] like Figure 1 - Figure 4As the torque arm 6 slides towards the chassis 1, and the threaded tube 707 begins to contact the outer wall of the chassis 1, the threaded tube 707 will continue to slide out against the rotating ring 704 and the mounting ring 701 as the torque arm 6 continues to move. During the sliding of the mounting ring 701, the limiting strip 702 can limit the sliding range of the mounting ring 701 within the torque arm 6, preventing it from sliding excessively and causing inaccurate installation position. It also plays a certain guiding role, making the sliding of the mounting ring 701 more stable and accurate. When the torque arm 6 fully contacts the outer surface of the chassis 1... At this time, the mounting ring 701 also moves to its maximum extent. At this time, the operator only needs to rotate the rotating ring 704 by rotating the rotating block 706. The limiting groove 703 inside the mounting ring 701 will also restrict the movement trajectory of the rotating ring 704, ensuring that the rotating ring 704 can rotate normally. While the rotating ring 704 rotates, it will also drive the threaded tube 707 to rotate, so that it continuously enters the threaded hole inside the housing 1 until the threaded tube 707 is completely inside the housing 1. At this time, the mounting ring 701 will also be completely inside the torque arm 6, completing the fixed installation of the torque arm 6.

[0033] like Figure 5 As shown, the chassis 1 is equipped with a limiting mechanism 9 corresponding to the docking block 8. The limiting mechanism 9 includes a sliding strip 901 slidably connected to the inside of the chassis 1. A pressing block 902 is fixedly connected to the top of the sliding strip 901. A fixing block 903 is fixedly connected to one side of the sliding strip 901. Two connecting strips 904 are rotatably connected to the outer wall of the fixing block 903. A connecting block 905 is rotatably connected to the other end of each of the two connecting strips 904. A limiting block 906 is fixedly connected to one side of each of the two connecting blocks 905. The two limiting blocks 906 have a symmetrical structure and are slidably connected to the inside of the docking block 8. The symmetrical structure of the limiting blocks 906 can apply a uniform and symmetrical limiting force to the limited component within the docking block 8. This helps to ensure that the limited component is subject to the same limiting effect in all directions, avoiding displacement, tilting or local wear due to uneven force, thereby more effectively maintaining the correct position and posture of the component and improving the accuracy and stability of the limiting. A limiting spring 907 is fixedly connected to the outer end of each of the two limiting blocks 906.

[0034] like Figure 5As shown, when the torque arm 6 is fully inserted into the housing 1, the limiting block 906, under the elastic force of the limiting spring 907 connected to it, will enter the interior of the mating block 8 of the torque arm 6, thus limiting and locking the torque arm 6 and preventing it from moving easily. Meanwhile, the connecting strips 904 on the two limiting blocks 906 will jointly push against the sliding strip 901, causing the sliding strip 901 to move upwards. At this time, the pressing block 902 above the sliding strip 901 will move a corresponding distance. When it is necessary to contact the limit, the operator only needs to press the pressing block 902, which will then move the limiter. The sliding bar 901 slides inside the housing 1. The sliding of the sliding bar 901 causes the fixed block 903 to move synchronously. When the fixed block 903 moves, it causes the two connecting bars 904 that are rotatably connected to it to rotate. The rotation of the connecting bars 904 causes the connecting block 905 that is rotatably connected to the other end to move. The movement of the connecting block 905 causes the limiting block 906 fixed on one side to extend outward, so that the limiting block 906 slides out of the docking block 8 and no longer limits the docking block 8. At this time, it is only necessary to rotate the rotating block 706 to make the threaded tube 707 disengage from the housing 1, so that the torque arm 6 can be disengaged and replaced.

[0035] When using this invention, if the torque arm 6 needs to be installed onto the chassis 1, the torque arm 6 needs to be aligned with the two limiting grooves 5 on the fixing plate 4 and slid into them. As the torque arm 6 slides towards the chassis 1, the mating block 8 on the inner side of the torque arm 6 will preferentially enter the chassis 1. At this time, under the elastic force of the limiting spring 907 connected to it, the limiting block 906 will enter the interior of the mating block 8 of the torque arm 6, thus limiting and locking the torque arm 6 and preventing it from moving easily. Meanwhile, the connecting strips 904 on the two limiting blocks 906 will jointly push against the sliding strip 901, causing the sliding strip 901 to move upward. At this time, the pressing block 902 above the sliding strip 901 will move a corresponding distance. When the torque arm 6 completes the initial limiting... Subsequently, as the torque arm 6 moves, the threaded tube 707 will begin to slide out against the rotating ring 704 and the mounting ring 701. When the torque arm 6 is fully in contact with the outer surface of the chassis 1, the mounting ring 701 will also move to its maximum extent. At this point, the operator only needs to rotate the rotating ring 704 through the rotating block 706. The limiting groove 703 inside the mounting ring 701 will also restrict the movement trajectory of the rotating ring 704, ensuring that the rotating ring 704 can rotate normally. While the rotating ring 704 is rotating, it will also drive the threaded tube 707 to rotate, causing it to continuously enter the threaded hole inside the chassis 1 until the threaded tube 707 is completely inside the chassis 1. At this point, the mounting ring 701 will also be completely inside the torque arm 6, completing the fixed installation of the torque arm 6.

[0036] When it is necessary to remove or replace the torque arm 6, the operator only needs to press the pressing block 902. The pressing block 902 drives the sliding strip 901 to slide inside the housing 1. The sliding of the sliding strip 901 causes the fixing block 903 to move synchronously. When the fixing block 903 moves, it causes the two connecting strips 904 that are rotatably connected to it to rotate. The rotation of the connecting strips 904 will drive the connecting block 905 that is rotatably connected to the other end to move. The movement of the connecting block 905 causes the limiting block 906 fixed on one side to extend outward, so that the limiting block 906 slides out of the docking block 8 and no longer limits the docking block 8. At this time, it is only necessary to rotate the rotating block 706 to make the threaded tube 707 disengage from the housing 1, so that the torque arm 6 can be removed and replaced. The operation is simple and quick.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A torsion arm connection structure for a wind turbine gearbox, comprising a housing (1), characterized in that: The gear set (2) is installed inside the chassis (1). An output shaft (3) is installed on one side of the gear set (2). A fixing plate (4) is fixedly connected to one side of the chassis (1). Two limiting slide grooves (5) are opened on the top of the fixing plate (4). A torque arm (6) is slidably connected to the top of the fixing plate (4). The torque arm (6) is provided with a fixing mechanism (7) inside, and a docking block (8) is fixedly connected to the inner side of the torque arm (6). The housing (1) is provided with a limiting mechanism (9) corresponding to the docking block (8) inside.

2. The torsion arm connection structure for the gearbox of a wind turbine generator set according to claim 1, characterized in that: The connection surfaces of the torque arm (6) and the housing (1) are fitted with shock-absorbing rubber pads.

3. The torsion arm connection structure for the gearbox of a wind turbine generator set according to claim 2, characterized in that: The fixing mechanism (7) includes a mounting ring (701) slidably connected inside the torque arm (6). Two limiting strips (702) are fixedly connected to the outer wall of the mounting ring (701). A limiting groove (703) is opened on the inner wall of the mounting ring (701). A rotating ring (704) is rotatably connected to the inner wall of the mounting ring (701). A limiting ring (705) is fixedly connected to the outer wall of the rotating ring (704). A rotating block (706) is fixedly connected to the outer side of the rotating ring (704). A threaded tube (707) is fixedly connected to the inner side of the rotating ring (704). A bearing (708) is installed on the outer wall of the output shaft (3).

4. The torsion arm connection structure for the gearbox of a wind turbine generator set according to claim 2, characterized in that: The inner wall of the torque arm (6) is provided with a sliding groove, and the outer wall of the limiting strip (702) slides against the inner wall of the sliding groove.

5. The torsion arm connection structure for the gearbox of a wind turbine generator set according to claim 2, characterized in that: The interior of the chassis (1) is provided with threaded grooves corresponding to the threaded tube (707).

6. The torsion arm connection structure for the gearbox of a wind turbine generator set according to claim 1, characterized in that: The limiting mechanism (9) includes a sliding bar (901) slidably connected inside the housing (1). A pressing block (902) is fixedly connected to the top of the sliding bar (901). A fixing block (903) is fixedly connected to one side of the sliding bar (901). Two connecting bars (904) are rotatably connected to the outer wall of the fixing block (903). A connecting block (905) is rotatably connected to the other end of each of the two connecting bars (904). A limiting block (906) is fixedly connected to one side of each of the two connecting blocks (905). A limiting spring (907) is fixedly connected to the outer end of each of the two limiting blocks (906).

7. The torsion arm connection structure for the gearbox of a wind turbine generator set according to claim 6, characterized in that: The two limiting blocks (906) are symmetrical and are slidably connected inside the docking block (8).

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