Wind power yaw gearbox output supporting structure

Abstract

The utility model discloses an output supporting structure of a wind power yaw gearbox, and relates to the technical field of improvement of yaw gearboxes of wind driven generators. The positioning device comprises a plurality of cylindrical connecting rods which surround the axis of a gear box motor and are horizontally arranged, a positioning plate is installed at the end, away from the gear box motor, of each connecting rod, the axis of each connecting rod is perpendicular to the corresponding positioning plate, and the positioning plates are sequentially connected to surround the gear box motor to form a positioning frame. A supporting rod is installed on the bottom face of the positioning frame, a reinforcing arc-shaped plate is coaxially and rotatably installed on the positioning plate and located above the connecting rod, the outer arc face of the top end of the reinforcing arc-shaped plate is in transmission connection with a rotary driving mechanism, and the central angle of the reinforcing arc-shaped plate is larger than 180 degrees. The purpose of supporting the output mechanism of the yaw gearbox in a light-weight mode is achieved, and the problem that the large instantaneous load bearing capacity of the connecting section of the connecting rod and the positioning plate is low is solved.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine yaw gearbox improvement technology, specifically, it is a wind turbine yaw gearbox output support structure. Background Technology

[0002] As a key component of the yaw system of a wind turbine, the yaw gearbox employs a four- or five-stage planetary transmission, making it technologically advanced. With a transmission ratio exceeding 2000, it requires high precision, high load capacity, long service life, small size, and light weight. However, in terms of reliability and lightweight design, domestically produced yaw gearboxes still lag significantly behind advanced international standards.

[0003] Modern wind turbines are becoming increasingly powerful, demanding higher reliability. Equipment damage and downtime for maintenance can cause significant losses for wind power companies. The expected mean time between failures (MTBF) for modern wind turbines is 20 years, a requirement that is quite difficult to meet. The yaw gearbox is a vertical, multi-stage planetary transmission device with complex operating conditions, frequent starts, large instantaneous load fluctuations, and frequent forward and reverse rotation.

[0004] Therefore, the key issue is how to ensure that the output motor of the yaw gearbox remains stable under the condition of frequent forward and reverse rotation and large instantaneous loads. Moreover, generally speaking, the location that is most likely to fail to withstand instantaneous loads is usually the connection point. Utility Model Content

[0005] The purpose of this utility model is to provide an output support structure for a wind turbine yaw gearbox, so as to achieve lightweight support for the output mechanism of the yaw gearbox and solve the problem that the connection section between the connecting rod and the positioning plate has a low load-bearing capacity for large instantaneous loads.

[0006] To achieve the above objectives, the present invention employs the following technical means:

[0007] A wind turbine yaw gearbox output support structure includes several cylindrical connecting rods arranged horizontally around the axis of the gearbox motor. A positioning plate is installed at the end of each connecting rod away from the gearbox motor. The axis of the connecting rod is perpendicular to the positioning plate. Several positioning plates are sequentially connected around the gearbox motor to form a positioning frame. A support rod is installed on the bottom surface of the positioning frame. A reinforcing arc plate is installed on the positioning plate above the connecting rod and rotatably mounted coaxially with the connecting rod. The outer arc surface of the top end of the reinforcing arc plate is connected to a rotary drive mechanism. The central angle of the reinforcing arc plate is greater than 180°.

[0008] Preferably, at least one support rod is installed on the bottom surface of each positioning plate.

[0009] Furthermore, the positioning plate has an annular groove around the axis of the connecting rod, and the reinforcing arc plate has a slider on the side facing away from the gearbox motor, the slider being slidably embedded in the annular groove.

[0010] Furthermore, the inner and outer ring walls of the annular groove are respectively constructed with ball bearings, the axis of the ball bearings is parallel to the axis of the annular groove, and part of the ball surface of the ball bearings extends into the annular groove.

[0011] Furthermore, the ball bearings are arranged sequentially around the axis of the annular groove.

[0012] Furthermore, the outer arc surface of the reinforced arc plate is constructed with a plurality of first tooth structures around its axis, and the rotary drive mechanism includes a rotary motor mounted on the side of the positioning plate facing away from the connecting rod. The rotating end of the rotary motor is coaxially mounted with drive teeth through the positioning plate, and the drive teeth are meshed with the first tooth structures.

[0013] This utility model has the following beneficial effects during use:

[0014] Supported by a fixed support rod on the bottom surface, and positioned by a positioning plate, the connecting rod positions the circumferential displacement of the gearbox motor, which serves as the output mechanism. This improves the gearbox motor's resistance to circumferential loads during rotation and frequent forward / reverse switching. Furthermore, addressing the issue of excessive instantaneous loads during frequent forward / reverse switching, even with a reduced outer diameter of the connecting rod to ensure lightweight design, a rotary drive mechanism controls the rotation of the reinforcing arc plate around the connecting rod's axis. When the gearbox motor needs to switch between forward and reverse rotation, the reinforcing arc plate rotates to completely cover one side of the connecting rod. Specifically, when the gearbox motor switches from clockwise to counterclockwise rotation, the reinforcing arc plate covers the clockwise side of the connecting rod facing the gearbox motor; conversely, it covers the counterclockwise side. This significantly improves the load-bearing capacity of the connecting rod and positioning plate during forward / reverse switching of the gearbox motor. Attached Figure Description

[0015] Figure 1 This is a top view of the structure of this utility model.

[0016] Figure 2 This is a front view structural diagram of the positioning plate of this utility model.

[0017] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0019] Among them, 1-gearbox motor, 2-connecting rod, 3-positioning plate, 4-support rod, 5-reinforced arc plate, 6-annular groove, 7-ball bearing, 8-first tooth structure, 9-rotating motor, 10-drive tooth. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please refer to Figures 1 to 4 As shown, a wind turbine yaw gearbox output support structure includes several cylindrical connecting rods 2 arranged horizontally around the axis of a gearbox motor 1. A positioning plate 3 is installed at the end of each connecting rod 2 away from the gearbox motor 1. The axis of the connecting rod 2 is perpendicular to the positioning plate 3. Several positioning plates 3 are sequentially connected around the gearbox motor 1 to form a positioning frame. A support rod 4 is installed on the bottom surface of the positioning frame. A reinforcing arc plate 5 is installed on the positioning plate 3 above the connecting rod 2 and rotatably coaxial with the connecting rod 2. The outer arc surface of the top end of the reinforcing arc plate 5 is connected to a rotary drive mechanism. The central angle of the reinforcing arc plate 5 is greater than 180°.

[0027] In this way, the support rod 4 fixed to the bottom surface provides support, and the positioning plate 3 positions the connecting rod 2. The connecting rod 2 is used to position the circumferential displacement of the gearbox motor 1, which is the output mechanism, thereby improving the gearbox motor 1's resistance to circumferential loads during rotation and frequent forward / reverse switching. Moreover, to address the problem of excessive instantaneous load during frequent forward / reverse switching, even with a reduced outer diameter of the connecting rod 2 to ensure lightweight design, a rotary drive mechanism is used to control the rotation of the reinforcing arc plate 5 around the axis of the connecting rod 2. When the gearbox motor 1 needs to switch between forward and reverse rotation, the reinforcing arc plate 5 rotates to completely cover one side of the connecting rod 2. That is, when the gearbox motor 1 switches from clockwise to counterclockwise rotation, the reinforcing arc plate 5 covers the side of the connecting rod 2 facing the clockwise direction of the gearbox motor 1, and vice versa. This significantly improves the load-bearing capacity of the connecting rod 2 and the positioning plate 3 when the gearbox motor 1 switches between forward and reverse rotation.

[0028] Furthermore, to ensure greater stability of the assembled positioning frame, at least one support rod 4 is mounted on the bottom surface of each positioning plate 3. The bottom end of each support rod 4 is fixedly connected to the ground.

[0029] Furthermore, in order to facilitate the rotation of the reinforced arc plate 5 and ensure stability during the rotation process, an annular groove 6 is constructed on the positioning plate 3 around the axis of the connecting rod 2, and a slider is constructed on the side of the reinforced arc plate 5 facing away from the gearbox motor 1, and the slider is slidably embedded in the annular groove 6.

[0030] Furthermore, the inner and outer ring walls of the annular groove 6 are respectively equipped with ball bearings 7, the axis of the ball bearings 7 is parallel to the axis of the annular groove 6, and a portion of the ball surface of the ball bearings 7 extends into the annular groove 6.

[0031] Meanwhile, the ball bearings 7 are arranged sequentially around the axis of the annular groove 6.

[0032] In this way, the ball bearing 7 is used to reduce the wear of the slider during rotation. At the same time, it reduces the friction between the reinforcing arc plate 5 and the annular groove 6 during rotation.

[0033] Furthermore, more specifically, the outer arc surface of the reinforced arc plate 5 is constructed with a plurality of first tooth structures 8 around its axis, and the rotary drive mechanism includes a rotary motor 9 installed on the side of the positioning plate 3 facing away from the connecting rod 2. The rotating end of the rotary motor 9 passes through the positioning plate 3 and is coaxially mounted with a drive tooth 10, which meshes with the first tooth structure 8.

[0034] By utilizing the forward and reverse rotation of the rotating motor 9, the meshing of the first tooth structure 8 and the drive tooth 10 is used to adjust the rotation direction of the reinforced arc plate 5.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wind turbine yaw gearbox output support structure, characterized in that, The system includes several cylindrical connecting rods (2) arranged horizontally around the axis of the gearbox motor (1). Each connecting rod (2) has a positioning plate (3) installed at one end away from the gearbox motor (1). The axis of the connecting rod (2) is perpendicular to the positioning plate (3). Several positioning plates (3) are connected in sequence around the gearbox motor (1) to form a positioning frame. A support rod (4) is installed on the bottom surface of the positioning frame. A reinforcing arc plate (5) is installed on the positioning plate (3) above the connecting rod (2) and rotates coaxially with the connecting rod (2). The outer arc surface of the top end of the reinforcing arc plate (5) is connected to the rotary drive mechanism. The central angle of the reinforcing arc plate (5) is greater than 180°.

2. The wind turbine yaw gearbox output support structure according to claim 1, characterized in that, At least one support rod (4) is installed on the bottom surface of each of the positioning plates (3).

3. The wind turbine yaw gearbox output support structure according to claim 1, characterized in that, The positioning plate (3) has an annular groove (6) around the axis of the connecting rod (2), and the reinforcing arc plate (5) has a slider on the side facing away from the gearbox motor (1), and the slider is slidably embedded in the annular groove (6).

4. The wind turbine yaw gearbox output support structure according to claim 3, characterized in that, The inner and outer ring walls of the annular groove (6) are respectively equipped with ball bearings (7), the axis of the ball bearings (7) is parallel to the axis of the annular groove (6), and part of the ball surface of the ball bearings (7) extends into the annular groove (6).

5. The wind turbine yaw gearbox output support structure according to claim 4, characterized in that, The ball bearings (7) are arranged sequentially around the axis of the annular groove (6).

6. The wind turbine yaw gearbox output support structure according to claim 1, characterized in that, The outer arc surface of the reinforced arc plate (5) is constructed with a plurality of first tooth structures (8) around its axis. The rotary drive mechanism includes a rotary motor (9) installed on the side of the positioning plate (3) facing away from the connecting rod (2). The rotating end of the rotary motor (9) is coaxially mounted with a drive tooth (10) through the positioning plate (3). The drive tooth (10) meshes with the first tooth structure (8).

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