Lubricating oil path structure and wind power gear box

Abstract

The utility model belongs to gear box lubrication technical field discloses a kind of lubricating oil path structure and wind power gear box.The lubricating oil path structure is used to transport lubricating oil to lubrication area, one end of lubricating oil path structure is used to be fixedly connected with the inner wall of mounting box body, the inside of lubricating oil path structure has lubricating passage, lubricating hole is opened on lubricating oil path structure, lubricating hole is communicated with oil outlet on the inner wall of mounting box body by lubricating passage, lubricating hole is opposite lubrication area arrangement.The structure of the lubricating oil path structure is simple, the end portion is fixed on the inner wall of mounting box body, and since the lubricating oil path structure utilizes the oil outlet on the inner wall of mounting box body, it is not necessary to set up long exposed pipeline with great effort, greatly facilitates the installation of early stage and the repair work of later stage, and has strong practicability.

Description

Technical Field

[0001] This utility model relates to the field of gearbox lubrication technology, and in particular to a lubrication oil circuit structure and a wind turbine gearbox. Background Technology

[0002] The gearbox is one of the key components of a wind turbine generator set. Its main function is to transmit the power generated by the wind turbine under the action of wind to the generator and enable it to achieve the corresponding rotational speed. The lubrication system is an indispensable part of the normal operation of the gearbox. It reduces friction between transmission mechanisms, reduces wear, and reduces power consumption by spraying lubricating oil onto the transmission mechanism inside the gearbox.

[0003] Inside a wind turbine gearbox, parallel gear pairs often serve as the final stage of the transmission mechanism, connecting to the generator. These gears operate at high speeds, thus requiring a large volume of lubricating oil. Currently, lubrication of parallel gear pairs is primarily achieved through oil pipes. One end of the pipe connects to an oil outlet inside the gearbox, while the other end bypasses the transmission mechanism, with its nozzle aligned with a designated lubrication point on the parallel gear pair. To ensure the stability of the oil pipe during gearbox operation, this lubrication structure requires bolts to secure the pipe along its length to the inner wall of the gearbox. This presents significant inconvenience for both initial installation and subsequent maintenance of the lubrication system. Furthermore, the considerable length of the oil pipe makes it highly susceptible to detachment during gearbox operation.

[0004] Therefore, it is urgent to design a lubrication circuit structure to solve the above-mentioned problems in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a lubrication oil circuit structure and a wind turbine gearbox. The structure is simple, which facilitates the initial installation and subsequent maintenance, and has strong practicality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The lubrication circuit structure has one end for fixed connection with the inner wall of the mounting box, the interior of the lubrication circuit structure has a lubrication channel, and the lubrication circuit structure has a lubrication hole. The lubrication hole is connected to the oil outlet on the inner wall of the mounting box through the lubrication channel. The lubrication hole is used to deliver lubricating oil to the lubrication area.

[0008] Preferably, the lubrication circuit structure includes a fixed base and an oil supply pipe connected to each other, and the fixed base is fixedly disposed on the inner wall of the mounting box;

[0009] The fixed base is provided with an oil guide hole, the oil supply pipe has a flow cavity inside, the oil guide hole and the flow cavity are connected to form the lubrication channel, the oil guide hole is connected to the oil outlet, and the lubrication hole is opened in the oil supply pipe.

[0010] Preferably, the fixing seat has a concave manifold groove on the end face facing the inner wall of the mounting box, the oil guide hole is opened on the bottom surface of the manifold groove, and the manifold groove is connected to the oil outlet.

[0011] Preferably, the manifold is elongated, and the oil guide hole is located at one end of the manifold.

[0012] Alternatively, the manifold is circular, and the oil guide hole is located in the middle of the manifold.

[0013] Preferably, a sealing ring is sandwiched between the fixing base and the mounting box, and the sealing ring is arranged around the edge of the fixing base.

[0014] Preferably, the mounting base has mounting holes for fasteners to pass through, and the fasteners are used to detachably connect the mounting box and the mounting base.

[0015] Preferably, a nozzle is installed on the lubrication hole, and the nozzle is used to spray the lubricating oil.

[0016] Preferably, a plurality of lubrication holes are provided, and the plurality of lubrication holes are spaced apart along the extension direction of the lubrication channel.

[0017] A wind turbine gearbox includes a mounting housing and the aforementioned lubrication circuit structure, wherein the lubrication circuit structure is disposed inside the mounting housing and the lubrication channel is connected to the oil outlet.

[0018] Preferably, the inner wall of the mounting box is recessed to accommodate the end of the lubricating oil circuit structure, the oil outlet is opened on the bottom surface of the mounting groove, and a sealing ring is sandwiched between the side wall of the mounting groove and the end of the lubricating oil circuit structure.

[0019] The beneficial effects of this utility model are as follows:

[0020] The lubrication circuit structure provided by this utility model is used to deliver lubricating oil to the lubrication area. Since the lubrication circuit structure has a lubrication channel inside and a lubrication hole is also provided on the lubrication circuit structure, and the lubrication hole is connected to the oil outlet on the inner wall of the mounting box through the lubrication channel, the lubricating oil in the oil outlet will flow through the lubrication channel and out through the lubrication hole, thereby realizing the function of delivering lubricating oil to the designated lubrication area. The structure of this lubrication circuit structure is simple. It can be assembled by fixing its end to the inner wall of the mounting box. Since this lubrication circuit structure utilizes the oil outlet on the inner wall of the mounting box, there is no need to set up a long exposed pipe, which greatly facilitates the initial installation and subsequent maintenance work, and has strong practicality.

[0021] The wind turbine gearbox provided by this utility model includes a mounting housing and the aforementioned lubrication oil circuit structure. The lubrication oil circuit structure is located inside the mounting housing. This wind turbine gearbox can directly deliver lubricating oil to the last stage of the parallel gear pair of the transmission mechanism through the lubrication oil circuit structure, making full use of the oil outlet on the inner wall of the mounting housing. It eliminates the need for laboriously setting up long and complicated exposed pipes, greatly facilitating the initial installation and subsequent maintenance operations. Attached Figure Description

[0022] Figure 1 This is an assembly drawing of the lubrication circuit structure and mounting box provided in a specific embodiment of this utility model;

[0023] Figure 2 This is an exploded view of the lubrication circuit structure provided in a specific embodiment of this utility model.

[0024] In the picture:

[0025] 100 - Mounting housing; 110 - Oil outlet; 120 - Assembly slot;

[0026] 10-Lubrication channel;

[0027] 1-Fixed base;

[0028] 11-Oil guide hole; 12-Manifold groove; 13-Mounting hole;

[0029] 2-Oil delivery pipe; 21-Flow chamber; 22-Lubrication hole;

[0030] 3- Nozzle;

[0031] 4-Fasteners. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 mechanical connection or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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" and "second" are only used for distinction in description and have no special meaning.

[0036] like Figure 1 and Figure 2As shown, this utility model provides a lubrication circuit structure. One end of the lubrication circuit structure is fixedly connected to the inner wall of the mounting box 100. The lubrication circuit structure has a lubrication channel 10 inside and a lubrication hole 22 is opened on the lubrication circuit structure. The lubrication hole 22 is connected to the oil outlet 110 on the inner wall of the mounting box 100 through the lubrication channel 10. The lubrication hole 22 is set facing the lubrication area and is used to deliver lubricating oil to the lubrication area. In this embodiment, since the lubrication circuit structure has a lubrication channel 10 inside and a lubrication hole 22 is also provided on the lubrication circuit structure, and the lubrication hole 22 is connected to the oil outlet 110 on the inner wall of the mounting box 100 through the lubrication channel 10, the lubricating oil in the oil outlet 110 will flow through the lubrication channel 10 and out through the lubrication hole 22, thereby realizing the function of delivering lubricating oil to the lubrication area. The structure of this lubrication circuit structure is simple. It can be assembled by fixing its end to the inner wall of the mounting box 100. Since this lubrication circuit structure utilizes the oil outlet 110 on the inner wall of the mounting box 100, there is no need to set up a long exposed pipe, which greatly facilitates the initial installation and subsequent maintenance work, and has strong practicality.

[0037] Specifically, the inner wall of the mounting housing 100 is provided with an oil supply channel for supplying lubricating oil to the planetary transmission mechanisms at each stage inside the mounting housing 100. Before installing the lubrication circuit structure on the inner wall of the mounting housing 100, an oil outlet 110 needs to be opened on the inner wall of the mounting housing 100 so that the oil outlet 110 is connected to the oil supply channel inside the housing wall. The lubrication holes 22 of the lubrication circuit structure are set directly opposite the meshing area of ​​the parallel gear pair, thereby realizing the lubrication of the two gears in the parallel gear pair.

[0038] Furthermore, such as Figure 1 and Figure 2 As shown, the lubrication circuit structure includes a fixed base 1 and an oil supply pipe 2 connected to each other. The fixed base 1 is fixedly installed on the inner wall of the mounting box 100. An oil guide hole 11 is provided on the fixed base 1. The oil supply pipe 2 has a flow cavity 21 inside. The oil guide hole 11 and the flow cavity 21 are connected to form a lubrication channel 10. The oil guide hole 11 is connected to the oil outlet 110. A lubrication hole 22 is opened in the oil supply pipe 2. Lubricating oil flows out from the oil outlet 110 and flows into the flow cavity 21 through the oil guide hole 11, and finally flows out through the lubrication hole 22.

[0039] The specific structures of the mounting base 1 and the oil pipeline 2 can be configured according to actual conditions; in this embodiment, for example... Figure 2 As shown, the fixed base 1 is a disc-shaped structure, and the oil supply pipe 2 is a hollow round pipe with one end open. The oil supply pipe 2 is welded to the fixed base 1, and the port of the flow cavity 21 is directly opposite the oil guide hole 11. The inner diameter of the port of the flow cavity 21 is the same as the inner diameter of the oil guide hole 11.

[0040] To improve the applicability of this lubrication circuit structure, such as Figure 2 As shown, a converging groove 12 is recessed on the end face of the fixed base 1 facing the inner wall of the mounting box 100. An oil guide hole 11 is opened on the bottom surface of the converging groove 12. The converging groove 12 is connected to the oil outlet 110. The opening area of ​​the converging groove 12 is larger than the opening area of ​​the oil guide hole 11. Therefore, the converging groove 12 can collect lubricating oil and avoid the problem that the lubricating oil cannot enter the oil guide hole 11 due to the limited installation space and the inability of the oil guide hole 11 to be aligned with the oil outlet 110.

[0041] The specific structure and opening shape of the manifold 12 can be set according to actual conditions, as long as its opening area on the end face of the fixed base 1 is larger than the oil guide hole 11 and can completely cover the oil outlet 110. In this embodiment, the manifold 12 is elongated, the oil guide hole 11 is located at one end of the manifold 12, and the oil outlet 110 is within the coverage area of ​​the manifold 12. Therefore, the lubricating oil flowing out of the oil outlet 110 will first enter the manifold 12 and then flow into the oil guide hole 11. In another embodiment, the manifold 12 is circular, the oil guide hole 11 is located in the middle of the manifold 12, and the oil outlet 110 is within the coverage area of ​​the manifold 12.

[0042] To further improve the sealing performance of the lubrication circuit structure, a sealing ring is sandwiched between the fixing seat 1 and the mounting housing 100, and the sealing ring is arranged around the edge of the fixing seat 1. In this embodiment, an O-ring is provided between the fixing seat 1 and the inner wall of the mounting housing 100 to prevent lubricating oil leakage.

[0043] like Figure 1 As shown, the mounting base 1 has a mounting hole 13 for a fastener 4 to pass through. The fastener 4 is used to detachably connect the mounting housing 100 and the mounting base 1. Since the mounting base 1 is detachably connected to the mounting housing 100 through the fastener 4, the maintenance and replacement of the lubrication circuit structure is greatly facilitated. In this embodiment, the fastener 4 is a bolt. The inner wall of the mounting housing 100 has a threaded hole. The bolt passes through the mounting hole 13 of the mounting base 1 and is screwed into the threaded hole of the mounting housing 100, thereby connecting the mounting base 1 and the mounting housing 100.

[0044] Furthermore, such as Figure 1 and Figure 2 As shown, a nozzle 3 is installed on the lubrication hole 22, and the nozzle 3 is used to spray lubricating oil. The nozzle 3 is a commonly used spray lubrication device in the art, which can spray the lubricating oil delivered by the oil pump in the form of droplets onto the lubrication area in a directional manner, thereby effectively improving the lubrication effect and avoiding waste.

[0045] like Figure 1 and Figure 2As shown, multiple lubrication holes 22 are provided, and these multiple lubrication holes 22 are spaced apart along the extension direction of the lubrication channel 10. The multiple lubrication holes 22 can further improve the lubrication effect and lubrication efficiency. In this embodiment, the oil supply pipe 2 is a circular pipe structure, and the length direction of the oil supply pipe 2 is parallel to the axial direction of the gear to be lubricated. Four lubrication holes 22 are evenly spaced along the length direction of the oil supply pipe 2, and a nozzle 3 is installed on each lubrication hole 22.

[0046] This embodiment also provides a wind turbine gearbox, including a mounting housing 100 and the aforementioned lubrication oil passage structure. The lubrication oil passage structure is disposed inside the mounting housing 100, and the lubrication channel 10 is connected to the oil outlet 110. In this embodiment, the wind turbine gearbox can directly supply lubricating oil to the last stage parallel gear pair of the transmission mechanism through the lubrication oil passage structure, making full use of the oil outlet 110 on the inner wall of the mounting housing 100, eliminating the need for laboriously setting up long and complex exposed steel pipes, greatly facilitating the initial installation and subsequent maintenance operations.

[0047] Specifically, the inner wall of the mounting box 100 is provided with an oil supply channel, which is used to supply lubricating oil to the planetary transmission mechanisms at each level inside the mounting box 100. Before installing the lubricating oil circuit structure on the inner wall of the mounting box 100, an oil outlet 110 needs to be opened on the inner wall of the mounting box 100 so that the oil outlet 110 is connected to the oil supply channel inside the box wall.

[0048] To improve the assembly stability between the mounting housing 100 and the lubrication circuit structure, such as Figure 1 As shown, the inner wall of the mounting housing 100 is recessed with an assembly groove 120 for accommodating the end of the lubricating oil circuit structure. An oil outlet 110 is located on the bottom surface of the assembly groove 120. A sealing ring is sandwiched between the side wall of the assembly groove 120 and the end of the lubricating oil circuit structure. In this embodiment, the lubricating oil circuit structure includes a fixed base 1 and an oil supply pipe 2, which are fixedly connected. The fixed base 1 has a disc-shaped structure, and the shape of the assembly groove 120 matches that of the fixed base 1. Therefore, the assembly groove 120 can position the fixed base 1 during installation, and also improves the stability and reliability of the assembly. A threaded hole is provided on the bottom surface of the assembly groove 120, and the fixed base 1 is screwed to the mounting housing 100 by fasteners 4.

[0049] A sealing groove is provided around the outer circumference of the end of the lubrication circuit structure. A sealing ring is embedded in the sealing groove, and the portion of the sealing ring extending out of the sealing groove abuts against the side wall of the assembly groove 120. In this embodiment, the fixing seat 1 has a disc-shaped structure and is embedded in the assembly groove 120. An O-ring is provided between the fixing seat 1 and the assembly groove 120. To further improve the installation stability of the O-ring, the O-ring is embedded in the sealing groove on the outer circumference of the fixing seat 1.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lubrication oil circuit structure, characterized in that, One end of the lubricating oil circuit structure is fixedly connected to the inner wall of the mounting box (100). The lubricating oil circuit structure has a lubrication channel (10) inside and a lubrication hole (22) is opened on the lubricating oil circuit structure. The lubrication hole (22) is connected to the oil outlet (110) on the inner wall of the mounting box (100) through the lubrication channel (10). The lubrication hole (22) is used to deliver lubricating oil to the lubrication area.

2. The lubrication circuit structure according to claim 1, characterized in that, The lubrication circuit structure includes a fixed seat (1) and an oil supply pipe (2) connected to each other. The fixed seat (1) is fixedly installed on the inner wall of the mounting box (100). The fixed base (1) is provided with an oil guide hole (11), the oil supply pipe (2) has a flow cavity (21) inside, the oil guide hole (11) and the flow cavity (21) are connected to form the lubrication channel (10), the oil guide hole (11) is connected to the oil outlet (110), and the lubrication hole (22) is opened in the oil supply pipe (2).

3. The lubrication circuit structure according to claim 2, characterized in that, The fixed base (1) has a concave manifold (12) on the end face facing the inner wall of the mounting box (100), and the oil guide hole (11) is opened on the bottom surface of the manifold (12). The manifold (12) is connected to the oil outlet (110).

4. The lubrication circuit structure according to claim 3, characterized in that, The manifold (12) is elongated, and the oil guide hole (11) is located at one end of the manifold (12); Alternatively, the manifold (12) is circular, and the oil guide hole (11) is located in the middle of the manifold (12).

5. The lubrication circuit structure according to claim 2, characterized in that, A sealing ring is provided between the fixing seat (1) and the mounting box (100), and the sealing ring is arranged around the edge of the fixing seat (1).

6. The lubrication circuit structure according to claim 2, characterized in that, The mounting base (1) has a mounting hole (13) for fasteners (4) to pass through. The fasteners (4) are used to detachably connect the mounting box (100) and the mounting base (1).

7. The lubrication circuit structure according to any one of claims 1-6, characterized in that, A nozzle (3) is installed on the lubrication hole (22), and the nozzle (3) is used to spray the lubricating oil.

8. The lubrication circuit structure according to any one of claims 1-6, characterized in that, The lubrication holes (22) are provided in multiple ways, and the multiple lubrication holes (22) are spaced apart along the extension direction of the lubrication channel (10).

9. A wind turbine gearbox, characterized in that, It includes a mounting housing (100) and a lubrication circuit structure as described in any one of claims 1-8, wherein the lubrication circuit structure is disposed inside the mounting housing (100), and the lubrication channel (10) is connected to the oil outlet (110).

10. The wind turbine gearbox according to claim 9, characterized in that, The inner wall of the mounting box (100) is recessed with an assembly groove (120) for accommodating the end of the lubricating oil circuit structure. The oil outlet (110) is opened on the bottom surface of the assembly groove (120). A sealing ring is sandwiched between the side wall of the assembly groove (120) and the end of the lubricating oil circuit structure.

Images