Low-abrasion self-lubricating wind power yaw slewing bearing structure

Abstract

The utility model discloses a low-abrasion self-lubricating wind power yaw slewing bearing structure which comprises a variable-pitch bearing, a plurality of paddles are arranged on the outer end face of the variable-pitch bearing, a main shaft bearing is fixed to the back of the variable-pitch bearing, and the back of the main shaft bearing is connected with a slewing bearing body structure through a transverse bolt. The slewing bearing body structure comprises an outer ring, an inner ring is fixed to the inner side of the outer ring, a lubricating structure is arranged at the top of the outer ring and comprises a lubricating box, an oil filling pipe is fixed to the right end of the outer side of the lubricating box, the left side of the oil filling pipe penetrates to the inner side of the lubricating box, and an oil outlet pipe is fixed to the bottom of the lubricating box. And one end of the oil outlet pipe penetrates to the inner side of the lubricating box, and the other end of the oil outlet pipe penetrates to the interior of the outer ring, by arranging the lubricating structure, circulation of the lubricating structure in the outer lubricating channel and the inner lubricating channel is facilitated, automatic lubricating of the slewing bearing main body structure is achieved, and then the effect of reducing abrasion is achieved.

Description

Technical Field

[0001] This utility model relates to the field of wind power yaw technology, and in particular to a low-wear self-lubricating wind power yaw slewing bearing structure. Background Technology

[0002] The yaw bearing structure of a wind turbine refers to the support structure in a wind turbine unit used to connect the nacelle and the tower and realize the yaw movement of the nacelle. Its main function is to support the weight of the nacelle and blades and transfer these loads to the tower. It is also responsible for bearing complex loads such as the wind force on the blades and the torque generated by the operation of the nacelle.

[0003] In the prior art, a flange-type slewing bearing with patent publication number CN215487269U includes a flange, a rotating assembly, and a sealing assembly. The rotating assembly is located at the center of the upper surface of the flange, and the sealing assembly is snapped onto the upper surface of the rotating assembly. An upper connecting ring is fixedly installed on the inner wall of the inner ring, and a lower connecting ring is fixedly installed on the outer surface of the outer ring. The upper surface of the lower connecting ring is evenly provided with rotating grooves, and a first ball bearing is rotatably connected inside the rotating grooves to reduce wear. However, this device does not have an automatic lubrication structure, and it cannot achieve automatic lubrication for both the outer and inner rings within the support structure. This will affect the performance of the mechanical equipment and reduce its efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a low-wear self-lubricating wind turbine yaw bearing structure to solve the problem that such devices do not have an automatic lubrication structure, making it impossible to achieve automatic lubrication of both the outer and inner rings within the bearing structure, which would affect the performance of the mechanical equipment and reduce its efficiency.

[0005] To achieve the above objectives, a low-wear self-lubricating wind turbine yaw slewing bearing structure is provided, including a pitch bearing. Multiple blades are arranged on the outer end face of the pitch bearing. A main shaft bearing is fixed to the back of the pitch bearing. The main shaft bearing is connected to the slewing bearing main body structure via transverse bolts. The slewing bearing main body structure includes an outer ring, an inner ring fixed to the inner side of the outer ring, and a lubrication structure at the top of the outer ring. The lubrication structure includes a lubrication box. An oil filling pipe is fixed to the right end of the outer side of the lubrication box, and the left side of the oil filling pipe extends into the inner side of the lubrication box. An oil outlet pipe is fixed to the bottom of the lubrication box, with one end extending into the inner side of the lubrication box and the other end extending into the inner side of the outer ring.

[0006] According to the aforementioned low-wear self-lubricating wind turbine yaw bearing structure, a connecting box is fixed inside the outer ring, and a shell is set inside the connecting box. The oil outlet pipe passes through the inner side of the connecting box. An outer lubrication pipe is fixed at the right end of the outer side of the connecting box, and an inner lubrication pipe is fixed at the bottom end of the outer side of the connecting box. The inner lubrication pipe passes through the inner side of the inner ring.

[0007] According to the aforementioned low-wear self-lubricating wind turbine yaw bearing structure, an outer lubrication channel is provided inside the outer ring, and an inner lubrication channel is provided inside the inner ring.

[0008] According to the aforementioned low-wear self-lubricating wind turbine yaw bearing structure, an electric control valve is installed outside the oil outlet pipe.

[0009] According to the aforementioned low-wear self-lubricating wind turbine yaw bearing structure, the lubrication box is entirely transparent on the outside.

[0010] According to the aforementioned low-wear self-lubricating wind turbine yaw bearing structure, multiple blades are fixedly connected to the outside of the pitch bearing via connecting arc blocks.

[0011] According to the aforementioned low-wear self-lubricating wind turbine yaw bearing structure, a toothed rack is fixed to the outside of the outer ring, and the toothed rack has a pointed shape on its outside.

[0012] According to the aforementioned low-wear self-lubricating wind turbine yaw bearing structure, a protective cover is fixed to the top of the lubrication box.

[0013] The above solution has the following advantages: First, lubricating oil is introduced into the lubrication box through the oil filling pipe, and the piston is tightened to prevent overflow. When automatic lubrication of the slewing bearing main structure is required, the power control valve can be turned on by the power supply, so that the lubricating oil introduced into the lubrication box can flow through the oil outlet pipe. Then, the lubricating oil can flow into the inner side of the connecting box, and then into the outer ring through the outer lubrication pipe, and into the inner ring through the inner lubrication pipe, which facilitates its flow in the outer lubrication channel and the inner lubrication channel, thereby achieving automatic lubrication of the slewing bearing main structure and reducing wear.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is an overall schematic diagram of a low-wear self-lubricating wind turbine yaw bearing structure according to the present invention.

[0017] Figure 2 This is a schematic diagram of the overall structure of the main body of the slewing bearing of the low-wear self-lubricating wind turbine yaw slewing bearing structure of this utility model;

[0018] Figure 3 This is an enlarged schematic diagram of point A of a low-wear self-lubricating wind turbine yaw bearing structure according to this utility model;

[0019] Figure 4 This is an enlarged schematic diagram of point B of a low-wear self-lubricating wind turbine yaw bearing structure according to this utility model.

[0020] Legend:

[0021] 1. Pitch bearing; 2. Blade; 3. Main shaft bearing; 4. Outer ring; 5. Inner ring; 6. Lubrication box; 7. Oil filling pipe; 8. Oil outlet pipe; 9. Connecting box; 10. External lubrication pipe; 11. Internal lubrication pipe; 12. External lubrication channel; 13. Internal lubrication channel; 14. Electrical control valve; 15. Connecting arc block; 16. Gear rack; 17. Protective cover. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4This utility model discloses a low-wear self-lubricating wind turbine yaw slewing bearing structure, which includes a pitch bearing 1. Multiple blades 2 are arranged on the outer end face of the pitch bearing 1. A main shaft bearing 3 is fixed to the back of the pitch bearing 1. The main shaft bearing 3 is connected to the slewing bearing main body structure via transverse bolts. The slewing bearing main body structure includes an outer ring 4, an inner ring 5 is fixed to the inner side of the outer ring 4, and a lubrication structure is provided on the top of the outer ring 4. The lubrication structure includes a lubrication box 6. An oil filling pipe 7 is fixed to the right end of the outer side of the lubrication box 6, and the left side of the oil filling pipe 7 extends into the inner side of the lubrication box 6. An oil outlet pipe 8 is fixed to the bottom of the lubrication box 6, with one end of the oil outlet pipe 8 extending into the inner side of the lubrication box 6 and the other end extending into the interior of the outer ring 4. In the prior art, this... The device lacks an automatic lubrication structure, making it impossible to achieve automatic lubrication for both the outer and inner rings within the support structure. This negatively impacts the performance and efficiency of the machinery. To address this issue, a lubrication structure can be installed at the top of the outer ring 4. Lubricating oil is pre-lubricated into the lubrication box 6 via the oil filling pipe 7, and the piston is tightened to prevent overflow. When automatic lubrication of the slewing bearing structure is required, the power control valve 14 can be activated to allow the lubricating oil in the lubrication box 6 to circulate through the oil outlet pipe 8, thus facilitating automatic lubrication of both the outer ring 4 and the inner ring 5 and reducing wear.

[0024] A connecting box 9 is fixed inside the outer ring 4. The connecting box 9 has an internal shell. An oil outlet pipe 8 passes through the inside of the connecting box 9. An external lubrication pipe 10 is fixed to the right end of the outside of the connecting box 9. An internal lubrication pipe 11 is fixed to the bottom end of the outside of the connecting box 9. The internal lubrication pipe 11 passes through the inside of the inner ring 5. By setting up the connecting box 9, the external lubrication pipe 10 and the internal lubrication pipe 11, the lubricating oil flowing through the oil outlet pipe 8 can flow into the inside of the connecting box 9, and then into the outside ring 4 through the external lubrication pipe 10, and into the inside of the inner ring 5 through the internal lubrication pipe 11, so as to achieve the effect of automatic lubrication of the main structure of the slewing bearing. An external lubrication channel 12 is opened inside the outer ring 4 and an internal lubrication channel 13 is opened inside the inner ring 5. By opening the external lubrication channel 12 and the internal lubrication channel 13, the lubricating oil in the outer ring 4 and the inner ring 5 can flow.

[0025] An electric control valve 14 is installed on the outside of the oil outlet pipe 8 to control the flow of lubricating oil in the lubrication box 6. The lubrication box 6 is made entirely transparent to facilitate observation of the lubricating oil usage inside the lubrication box 6.

[0026] Multiple blades 2 are fixedly connected to the outside of the pitch bearing 1 by connecting arc blocks 15, thereby reinforcing the multiple blades 2. A toothed rack 16 is fixed to the outside of the outer ring 4. The toothed rack 16 is pointed on the outside to enhance the external stability of the outer ring 4. A protective cover 17 is fixed to the top of the lubrication box 6 to protect the top of the lubrication box 6.

[0027] Working principle: First, in order to achieve automatic lubrication and avoid affecting the performance of mechanical equipment, lubricating oil is first introduced into the lubrication box 6 through the oil filling pipe 7. The piston is tightened to prevent overflow. When automatic lubrication of the slewing bearing main structure is required, the power control valve 14 can be turned on by the power supply, so that the lubricating oil introduced into the lubrication box 6 can flow through the oil outlet pipe 8. Then, the lubricating oil can flow into the inner side of the connecting box 9, and then into the outer ring 4 through the outer lubrication pipe 10, and into the inner ring 5 through the inner lubrication pipe 11, so as to facilitate its flow in the outer lubrication channel 12 and the inner lubrication channel 13, thereby achieving automatic lubrication of the slewing bearing main structure and reducing wear.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A low-wear self-lubricating wind turbine yaw bearing structure, comprising: A pitch bearing (1) is characterized in that a plurality of blades (2) are provided on the outer end face of the pitch bearing (1), a main shaft bearing (3) is fixed on the back of the pitch bearing (1), and a slewing bearing main body structure is connected to the back of the main shaft bearing (3) by a transverse bolt. The slewing bearing main body structure includes an outer ring (4), an inner ring (5) is fixed on the inner side of the outer ring (4), a lubrication structure is provided on the top of the outer ring (4), the lubrication structure includes a lubrication box (6), an oil filling pipe (7) is fixed on the right side of the outer side of the lubrication box (6), the left side of the oil filling pipe (7) extends through to the inner side of the lubrication box (6), and an oil outlet pipe (8) is fixed on the bottom of the lubrication box (6). One end of the oil outlet pipe (8) extends through to the inner side of the lubrication box (6), and the other end extends through to the inside of the outer ring (4).

2. The low-wear self-lubricating wind turbine yaw bearing structure according to claim 1, characterized in that, The outer ring (4) is fixed with a connecting box (9) inside. The connecting box (9) is designed with a shell inside. The oil outlet pipe (8) passes through to the inside of the connecting box (9). The right side of the outside of the connecting box (9) is fixed with an outer lubrication pipe (10). The bottom of the outside of the connecting box (9) is fixed with an inner lubrication pipe (11). The inner lubrication pipe (11) passes through to the inside of the inner ring (5).

3. The low-wear self-lubricating wind turbine yaw bearing structure according to claim 1, characterized in that, The outer ring (4) has an outer lubrication channel (12) inside, and the inner ring (5) has an inner lubrication channel (13) inside.

4. The low-wear self-lubricating wind turbine yaw bearing structure according to claim 1, characterized in that, An electric control valve (14) is installed outside the oil outlet pipe (8).

5. The low-wear self-lubricating wind turbine yaw bearing structure according to claim 1, characterized in that, The lubrication box (6) is entirely transparent on the outside.

6. The low-wear self-lubricating wind turbine yaw bearing structure according to claim 1, characterized in that, The multiple blades (2) are fixedly connected to the outside of the pitch bearing (1) by connecting arc blocks (15).

7. The low-wear self-lubricating wind turbine yaw bearing structure according to claim 1, characterized in that, The outer ring (4) is fixed with a toothed strip (16), and the toothed strip (16) is pointed on the outside.

8. The low-wear self-lubricating wind turbine yaw bearing structure according to claim 1, characterized in that, The top of the lubrication box (6) is fixed with a protective cover (17).

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