Supporting device

Abstract

The utility model relates to the technical field of wind power generation, in particular to a supporting device which comprises two base assemblies and an elastic connecting piece, one ends of the two base assemblies are connected with two mounting plates respectively, the elastic connecting piece is located between the two base assemblies, and the two ends of the elastic connecting piece are connected with the other ends of the two base assemblies respectively. The two base assemblies are fixedly connected with the two mounting plates respectively, the two ends of the elastic connecting piece are connected with the two base assemblies respectively, flexible supporting of the encoder is achieved, the elastic connecting piece has a buffering effect, and mechanical stress caused by rigid mounting of the encoder is reduced; the elastic connecting piece serves as a whole to replace an original metal and rubber combined supporting mode, the problems of encoder damage, variable pitch faults and the like caused by separation of rubber and metal due to long-time stress impact are avoided, the service life of the supporting device is prolonged, and the stability and accuracy of the encoder are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and specifically to a support device. Background Technology

[0002] To ensure the normal operation of wind turbines, encoders are installed on the blades to detect the blade pitch angle. As the wind turbines age, the support structure originally designed to support the redundant encoders gradually ages. The original support structure was designed as a combination of rubber and metal; its aging manifests as the rubber material hardening, cracking, and even breaking. Combined with prolonged stress and impact, this can easily cause the rubber and metal to separate, leading to the elastic support detaching. This, in turn, can cause encoder damage and pitch failure, directly affecting the encoder's normal operation and reducing its stability and accuracy. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a support device that improves the service life of the support device and ensures the stability and accuracy of the encoder.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A support device includes: two base assemblies and an elastic connector, one end of the two base assemblies is respectively connected to two mounting plates, the elastic connector is located between the two base assemblies, and both ends of the elastic connector are respectively connected to the other ends of the two base assemblies.

[0005] The beneficial effects of this utility model are as follows: By setting two base assemblies and elastic connectors, the two base assemblies are fixedly connected to the upper and lower mounting plates that support the encoder, respectively. The two ends of the elastic connectors are connected to the two base assemblies, respectively, achieving flexible support for the encoder. The elastic connectors have a buffering effect, effectively absorbing vibration and impact loads, and reducing the mechanical stress on the encoder caused by rigid installation. Furthermore, the elastic connectors, as a whole, replace the original metal and rubber combination support method, avoiding the problems of rubber and metal separation due to long-term stress impacts, which can lead to encoder damage and pitch failure caused by the elastic support detaching. This extends the service life of the support device and ensures the stability and accuracy of the encoder. 。

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the base assembly includes a base, a bolt, and a nut, the bolt head abutting against the base, the bolt shank passing through the base and the corresponding mounting plate, and detachably connected to the nut; the base is located on one side of the two mounting plates facing each other.

[0008] The advantages of adopting the above-mentioned further solution are: the use of bolts and nuts for detachable connection facilitates the quick installation and disassembly of the base, encoder, and mounting plate, making maintenance convenient and improving work efficiency.

[0009] Furthermore, the base includes a base plate and a platform stage. The base plate is an annular plate, and the platform stage is cylindrical. One end of the platform stage is fixedly connected to one end of the base plate. The end of the elastic connector is sleeved on the outside of the corresponding platform stage and fixedly connected to the corresponding base plate. The bolt head of the bolt is located inside the platform stage.

[0010] The beneficial effects of adopting the above-mentioned further solutions are: the sleeve design of the cylindrical stage and the elastic connector achieves precise positioning, while the annular plate structure of the base plate disperses the load and reduces the risk of deformation.

[0011] Furthermore, a first through hole is provided on the base plate, and a second through hole is provided on the platform. The diameter of the second through hole is larger than the diameter of the first through hole. The bolt thread passes through the second through hole, the first through hole, and the corresponding mounting plate in sequence and is threadedly connected to the nut.

[0012] The beneficial effects of adopting the above-mentioned further solution are: the diameter of the second through hole is larger than that of the first through hole, leaving space for the bolt head to be placed, and the setting of the first and second through holes allows the bolt shank to pass through the second through hole, the first through hole and the corresponding mounting plate in sequence and be threadedly connected to the nut, so that the support device and the encoder mounting plate are connected, thereby providing safe and stable support.

[0013] Furthermore, the first through hole and the second through hole are coaxially arranged.

[0014] The beneficial effects of adopting the above-mentioned further solution are: the coaxial setting of the first through hole and the second through hole further optimizes the force path, ensures that the bolt is subjected to vertical force, avoids thread wear or loosening caused by off-center load, thereby improving connection reliability and fatigue life.

[0015] Furthermore, the support device also includes a set of gaskets, which are sleeved on the threaded rod of the bolt.

[0016] The beneficial effects of adopting the above-mentioned further solutions are: the installation gap of the gasket group increases the friction of the contact surface and prevents the bolts from loosening due to vibration; at the same time, it disperses the pressure and protects the surface of the mounting plate from scratches.

[0017] Furthermore, the gasket assembly includes a first gasket, a second gasket, a third gasket, and a fourth gasket, which are sleeved on the bolt's thread and arranged sequentially from one end of the bolt's thread to the other end.

[0018] Furthermore, the first gasket includes a first annular structure and a first cylindrical structure fixedly connected in sequence, the first annular structure and the first cylindrical structure being coaxially arranged, the first annular structure being disposed between the bolt head of the bolt and the base plate, and the first cylindrical structure being sleeved within the first through hole; the second gasket is annular, and the second gasket is disposed between the base plate and the corresponding mounting plate; the fourth gasket is annular, and the third gasket includes a third annular structure and a third cylindrical structure fixedly connected in sequence, the third annular structure and the third cylindrical structure being coaxially arranged, the third cylindrical structure being disposed within the mounting hole of the corresponding mounting plate, and the third annular structure and the fourth gasket being sequentially disposed between the corresponding mounting plate and the nut.

[0019] The beneficial effects of adopting the above-mentioned further scheme are as follows: the graded arrangement of multiple gaskets achieves progressive load transfer; the cylindrical structure of the first and third gaskets enhances bolt guidance; simultaneously, the cylindrical structure of the first and third gaskets fills the gaps between the first through hole and the mounting hole of the mounting plate and the bolt, thereby increasing the sealing and reducing shaking; the annular structure of the second and fourth gaskets isolates friction, improving overall seismic performance. The arrangement of multiple gaskets improves the overall stability and support performance of the support device.

[0020] Furthermore, the first gasket, the second gasket, and the third gasket are all made of plastic, while the fourth gasket is made of metal.

[0021] The beneficial effects of adopting the above-mentioned further solution are: the elastic deformation capacity of the plastic gasket is adapted to dynamic loads, and the plastic gasket plays an insulating protection role, while the metal gasket ensures the durability of nut tightening. The combination of the two takes into account both buffering and tightening requirements.

[0022] Furthermore, the elastic connector is a spring.

[0023] The beneficial effects of adopting the above-mentioned further solution are: the spring, as an elastic connecting component, has linear elastic characteristics, which can precisely control the support stiffness, and it has good fatigue resistance. Compared with the original support device that combines rubber and metal, it is not easy to age and break. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the support device of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Upper mounting plate; 2. Lower mounting plate;

[0027] 10. Elastic connector; 20. Base; 30. Bolt; 40. Nut; 50. First washer; 60. Second washer; 70. Third washer; 80. Fourth washer. Detailed Implementation

[0028] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] like Figure 1 As shown, this embodiment provides a support device, including: two base assemblies and an elastic connector 10. One end of the two base assemblies is connected to two mounting plates respectively, and the elastic connector 10 is located between the two base assemblies. The two ends of the elastic connector 10 are connected to the other ends of the two base assemblies respectively.

[0030] By setting up two base assemblies and elastic connectors 10, the two base assemblies are fixedly connected to two mounting plates respectively. The upper mounting plate 1 is fixed to the wind turbine hub, and the lower mounting plate 2 is connected to the encoder and connected to the upper mounting plate 1 through a support device. The rotatable nylon gear ring at the bottom of the encoder meshes with the wind turbine blade bearing gear ring. When the wind turbine blade bearing gear ring rotates, it drives the nylon gear ring to rotate, so that the encoder can obtain the rotation angle of the nylon gear ring, thereby detecting the blade pitch angle and ensuring the normal operation of the wind turbine. The two ends of the elastic connector 10 are connected to the two base assemblies respectively, thus realizing flexible support for the encoder. The elastic connector 10 has a buffering effect, effectively absorbing vibration and impact loads, and reducing the mechanical stress caused by the rigid installation of the encoder. As a whole, the elastic connector 10 replaces the original metal and rubber combination support method, avoiding the problem of rubber and metal separation caused by long-term stress impact, which can lead to encoder damage, pitch failure and other problems caused by the elastic support falling off. This extends the service life of the support device and ensures the stability and accuracy of the encoder.

[0031] Based on the above technical solution, the base assembly includes a base 20, a bolt 30 and a nut 40. The bolt head of the bolt 30 abuts against the base 20, and the bolt shank of the bolt 30 passes through the base 20 and the corresponding mounting plate, and is detachably connected to the nut 40. The base 20 is located on one side of the two mounting plates facing each other.

[0032] The detachable connection method using bolts 30 and nuts 40 facilitates the quick installation and removal of the base 20 from the encoder and mounting plate, making maintenance convenient and improving work efficiency.

[0033] Based on the above technical solution, the base 20 includes a base plate 21 and a platform 22. The base plate 21 is an annular plate, and the platform 22 is cylindrical. One end of the platform 22 is fixedly connected to one end of the base plate 21. The end of the elastic connector 10 is sleeved on the outside of the corresponding platform 22 and fixedly connected to the corresponding base plate 21. The bolt head of the bolt 30 is located inside the platform 22.

[0034] The sleeve design between the cylindrical stage 22 and the elastic connector 10 enables precise positioning, while the annular plate structure of the base plate 21 distributes the load and reduces the risk of deformation.

[0035] Based on the above technical solution, a first through hole is provided on the base plate 21, and a second through hole is provided on the platform stage 22. The diameter of the second through hole is larger than the diameter of the first through hole. The bolt 30 passes through the second through hole, the first through hole and the corresponding mounting plate in sequence and is threadedly connected to the nut 40.

[0036] The second through hole has a larger diameter than the first through hole, providing space for the bolt head of bolt 30. The arrangement of the first and second through holes allows the bolt spool of bolt 30 to pass through the second through hole, the first through hole, and the corresponding mounting plate in sequence, and to be threadedly connected to nut 40, thereby connecting the support device and the encoder mounting plate and providing safe and stable support.

[0037] Based on the above technical solution, the first through hole and the second through hole are coaxially arranged.

[0038] The coaxial arrangement of the first and second through holes further optimizes the force path, ensuring that the bolt 30 is subjected to vertical force, avoiding thread wear or loosening caused by off-center loading, thereby improving connection reliability and fatigue life.

[0039] Based on the above technical solution, the support device further includes a gasket group, which is sleeved on the threaded rod of the bolt 30.

[0040] The gasket set fills the installation gap, increases the friction of the contact surface, and prevents the bolt 30 from loosening due to vibration; at the same time, it disperses pressure and protects the surface of the mounting plate from scratches.

[0041] Based on the above technical solution, the gasket group includes a first gasket 50, a second gasket 60, a third gasket 70 and a fourth gasket 80. The first gasket 50, the second gasket 60, the third gasket 70 and the fourth gasket 80 are sleeved on the threaded rod of the bolt 30 and are arranged sequentially from one end of the threaded rod of the bolt 30 to the other end.

[0042] Based on the above technical solution, the first gasket 50 includes a first annular structure and a first cylindrical structure fixedly connected in sequence. The first annular structure and the first cylindrical structure are coaxially arranged. The first annular structure is disposed between the bolt head of the bolt 30 and the base plate 21, and the first cylindrical structure is sleeved in the first through hole. The second gasket 60 is annular and is disposed between the base plate 21 and the corresponding mounting plate. The fourth gasket 80 is annular. The third gasket 70 includes a third annular structure and a third cylindrical structure fixedly connected in sequence. The third annular structure and the third cylindrical structure are coaxially arranged. The third cylindrical structure is disposed in the mounting hole of the corresponding mounting plate, and the third annular structure and the fourth gasket 80 are sequentially disposed between the corresponding mounting plate and the nut 40.

[0043] The tiered arrangement of multiple gaskets enables progressive load transfer. The cylindrical structures of the first gasket 50 and the third gasket 70 enhance the guiding properties of the bolt 30. Simultaneously, the cylindrical structures of the first gasket 50 and the third gasket 70 fill the gaps between the first through hole, the mounting hole of the mounting plate, and the bolt 30, thereby increasing the sealing and reducing vibration. The annular structures of the second gasket 60 and the fourth gasket 80 isolate friction, improving overall seismic performance. The arrangement of multiple gaskets comprehensively enhances the stable support performance of the support device.

[0044] Based on the above technical solution, the first gasket 50, the second gasket 60 and the third gasket 70 are all made of plastic, and the fourth gasket 80 is made of metal.

[0045] The plastic gasket's elastic deformation capability adapts to dynamic loads, and it also serves as an insulating protection. The metal gasket ensures the durability of the 40mm nut's locking, and the combination of the two addresses both buffering and tightening requirements.

[0046] In a specific example, the first gasket 50, the second gasket 60, and the third gasket 70 are all nylon gaskets.

[0047] Based on the above technical solution, the elastic connector 10 is a spring.

[0048] The spring, as an elastic connector 10, has linear elastic characteristics, which can precisely control the support stiffness. It also has good fatigue resistance and is less prone to aging and breakage compared to the original support device that combines rubber and metal.

[0049] Specifically, there are at least two support devices.

[0050] In a specific example, two mounting plates and at least two support devices are installed on each of the three blades of the wind turbine generator set. The at least two support devices are spaced apart on the two mounting plates to connect and support the encoder. The upper mounting plate 1 is fixed to the hub, and the lower mounting plate 2 is connected to the encoder and connected to the upper mounting plate 1 through the support devices. The rotatable nylon gear ring at the bottom of the encoder meshes with the wind turbine blade bearing gear ring. When the wind turbine blade bearing gear ring rotates, it drives the nylon gear ring to rotate, so that the encoder can obtain the rotation angle of the nylon gear ring, thereby detecting the blade pitch angle and ensuring the normal operation of the wind turbine generator set.

[0051] The support device in this invention uses an elastic connector 10 as a whole, replacing the original metal and rubber combination for support. This avoids the problem of rubber separating from metal due to prolonged stress and impact, which could lead to the elastic support detaching and consequently cause encoder damage and pitch failure. The elastic connector 10 uses a spring, preventing aging and breakage. Simultaneously, insulating plastic gaskets separate the support device from the upper mounting plate 1 and lower mounting plate 2, providing insulation protection. This support device solves the problems of aging, separation, breakage, and detachment of the original elastic support, greatly improving the service life of the support device, ensuring encoder stability and accuracy, and reducing maintenance costs and power loss during downtime.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A support device, characterized in that, The device includes two base assemblies and a flexible connector (10). One end of each of the two base assemblies is connected to two mounting plates. The flexible connector (10) is located between the two base assemblies, and both ends of the flexible connector (10) are connected to the other ends of the two base assemblies. Each base assembly includes a base (20), a bolt (30), and a nut (40). The bolt head of the bolt (30) abuts against the base (20), and the bolt shank of the bolt (30) passes through the base (20) and the corresponding mounting plate, and is detachably connected to the nut (40). The base (20) is located on one side of the two mounting plates facing each other. The base (20) includes a base plate (21) and a platform. (22), the base plate (21) is an annular plate, the platform stage (22) is cylindrical, one end of the platform stage (22) is fixedly connected to one end of the base plate (21), the end of the elastic connector (10) is sleeved on the outside of the corresponding platform stage (22) and fixedly connected to the corresponding base plate (21), the bolt head of the bolt (30) is located inside the platform stage (22), the base plate (21) is provided with a first through hole, the platform stage (22) is provided with a second through hole, the diameter of the second through hole is larger than the diameter of the first through hole, the bolt (30) thread passes through the second through hole, the first through hole and the corresponding mounting plate in sequence and is threadedly connected to the nut (40).

2. The support device according to claim 1, characterized in that, The first through hole and the second through hole are coaxially arranged.

3. The support device according to claim 1, characterized in that, The support device also includes a set of gaskets, which are fitted onto the threaded rod of the bolt (30).

4. A support device according to claim 3, characterized in that, The gasket group includes a first gasket (50), a second gasket (60), a third gasket (70), and a fourth gasket (80). The first gasket (50), the second gasket (60), the third gasket (70), and the fourth gasket (80) are sleeved on the threaded rod of the bolt (30) and are arranged sequentially from one end of the threaded rod of the bolt (30) to the other end.

5. A support device according to claim 4, characterized in that, The first gasket (50) includes a first annular structure and a first cylindrical structure that are fixedly connected in sequence. The first annular structure and the first cylindrical structure are coaxially arranged. The first annular structure is disposed between the bolt head of the bolt (30) and the base plate (21). The first cylindrical structure is sleeved in the first through hole. The second gasket (60) is annular. The second gasket (60) is disposed between the base plate (21) and the corresponding mounting plate. The fourth gasket (80) is annular. The third gasket (70) includes a third annular structure and a third cylindrical structure that are fixedly connected in sequence. The third annular structure and the third cylindrical structure are coaxially arranged. The third cylindrical structure is disposed in the mounting hole of the corresponding mounting plate. The third annular structure and the fourth gasket (80) are disposed between the corresponding mounting plate and the nut (40).

6. A support device according to claim 4, characterized in that, The first gasket (50), the second gasket (60) and the third gasket (70) are all made of plastic, and the fourth gasket (80) is made of metal.

7. A support device according to any one of claims 1-6, characterized in that, The elastic connector (10) is a spring.

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