A fan variable pitch bearing anti-jamming lubricating device

Abstract

The utility model discloses a fan variable pitch bearing anti -stuck lubricating device relates to fan variable pitch bearing technical field. Including variable pitch bearing main part, the variable pitch bearing main part is by rotor, stator and ball and is composed, through setting up lubricating component, make through the multiple oil injection holes of inside setting of oil injection chamber make the lubricating oil of oil injection chamber inside even injection to the surface of variable pitch bearing main part ball, when the rotor of variable pitch bearing main part rotates and drive the ball rotation of variable pitch bearing main part to make the lubricating oil even act on the inside of variable pitch bearing main part to the inside of variable pitch bearing main part conveniently even lubrication to reduce the probability that variable pitch bearing main part appears to jam in the use process, simultaneously, through setting up extrusion component, make through extruding the speed of lubricating oil in oil injection chamber inside and discharging through oil injection hole to improve the lubricating force of lubricating component to the lubrication of variable pitch bearing main part, improve lubrication effect.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine pitch bearing technology, specifically a wind turbine pitch bearing anti-jamming lubrication device. Background Technology

[0002] During the operation of wind turbine generator sets, the pitch bearing, as the core transmission component connecting the blades and the hub, directly affects the power generation efficiency and safety stability of the unit. Since the pitch bearing is in complex outdoor conditions for a long time, it is necessary to continuously reduce the friction loss between the internal balls and raceways through lubrication to avoid component wear or abnormal operation due to insufficient lubrication.

[0003] However, existing pitch bearing lubrication devices mostly use a single oil injection channel or a fixed oil injection method, which makes it difficult to achieve uniform lubrication between the balls and the rotor / stator. This easily leads to localized over-lubrication and insufficient lubrication in other areas, causing the pitch bearing to jam during rotation due to uneven lubrication, increasing the risk of component failure. At the same time, existing devices lack an effective lubrication discharge speed adjustment structure, making it difficult to dynamically adjust the lubrication intensity according to the actual operating conditions of the pitch bearing. When the bearing load or operating frequency changes, it is difficult to match the optimal lubrication effect, further affecting the service life of the pitch bearing and the reliability of the unit operation. Therefore, there is an urgent need for a wind turbine pitch bearing anti-jamming lubrication device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a lubrication device for preventing jamming of wind turbine pitch bearings, so as to solve the problems mentioned in the background art of existing pitch bearing lubrication devices that are difficult to lubricate evenly and difficult to adjust the lubricating oil discharge speed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wind turbine pitch bearing anti-jamming lubrication device, comprising a pitch bearing body, wherein the pitch bearing body is composed of a rotor, a stator, and balls, and further comprising: A lubrication assembly is disposed on the side wall of the pitch bearing body and is used to uniformly lubricate the interior of the pitch bearing body. An extrusion assembly is disposed on the inner wall of the lubrication assembly and is used to extrude the lubricating oil inside the lubrication assembly.

[0006] Preferably, the lubrication assembly includes multiple oil reservoirs, each of which is disposed on the side wall of the pitch bearing body. An oil injection chamber is provided inside the rotor of the pitch bearing body, and multiple oil injection holes and multiple oil inlets are provided on the inner wall of the oil injection chamber. The oil injection port of the oil reservoir is fixedly connected to the inner wall of the oil inlet hole, and a fixing plate is fixedly connected to the side wall of the multiple oil reservoirs.

[0007] Preferably, the extrusion assembly includes multiple electric telescopic cylinders, each of which is fixedly connected to the side wall of the oil storage box. A connecting block is fixedly connected to the telescopic shaft surface of each electric telescopic cylinder. A sliding hole is provided on the side wall of the oil storage box. A sliding column is slidably connected to the inner wall of the sliding hole. The surface of the sliding column is fixedly connected to the inner wall of the connecting block. An extrusion plate is fixedly connected to one end of the sliding column. The extrusion plate is slidably connected to the inner wall of the electric telescopic cylinder.

[0008] Preferably, the inner wall of the oil storage box is provided with a connection hole, a connector is fixedly connected to the inner wall of the connection hole, and a connecting pipe is fixedly connected to the inner wall of the connector.

[0009] Preferably, an oil level monitoring sensor is fixedly connected to the inner wall of the oil storage box, a controller is fixedly connected to the side wall of the fixed plate, the controller is electrically connected to the oil level monitoring sensor, and the controller is electrically connected to the electric telescopic cylinder.

[0010] Preferably, a sliding sealing ring is slidably connected to the inner wall of the oil storage box, and the extrusion plate is fixedly connected to the inner wall of the sliding sealing ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The lubrication assembly allows lubricating oil to be evenly injected into the surface of the pitch bearing body's balls through multiple oil injection holes inside the oil injection chamber. When the rotor of the pitch bearing body rotates, it drives the balls of the pitch bearing body to rotate, thus ensuring that the lubricating oil acts evenly on the interior of the pitch bearing body. This facilitates uniform lubrication of the interior of the pitch bearing body, reducing the probability of jamming during use. At the same time, the extrusion assembly adjusts the speed at which the lubricating oil in the oil injection chamber is discharged through the oil injection holes, thereby increasing the lubrication force of the lubrication assembly on the pitch bearing body and improving the lubrication effect. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional view of the lubrication assembly of this utility model; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0013] In the diagram: 1. Pitch bearing body; 201. Oil reservoir; 202. Oil filling chamber; 203. Oil filling hole; 204. Oil inlet; 205. Connecting hole; 206. Connector; 207. Connecting pipe; 208. Oil level monitoring sensor; 209. Controller; 210. Fixed plate; 301. Electric telescopic cylinder; 302. Connecting block; 303. Sliding hole; 304. Sliding column; 305. Extrusion plate; 306. Sliding seal ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-3 This utility model provides a wind turbine pitch bearing anti-jamming lubrication device, including a pitch bearing body 1, which is composed of a rotor, a stator, and balls, and further includes: A lubrication assembly is disposed on the side wall of the pitch bearing body 1 and is used to uniformly lubricate the interior of the pitch bearing body 1. The extrusion assembly is located on the inner wall of the lubrication assembly and is used to extrude the lubricating oil inside the lubrication assembly. The lubrication components facilitate uniform lubrication of the interior of the pitch bearing body 1, thereby reducing the probability of jamming during use. The extrusion components facilitate the extrusion of lubricating oil inside the lubrication components, thereby increasing the lubrication force of the lubrication components on the pitch bearing body 1 and improving the lubrication effect.

[0016] Furthermore, the lubrication assembly includes multiple oil reservoirs 201, each disposed on the side wall of the pitch bearing body 1. An oil filling chamber 202 is formed inside the rotor of the pitch bearing body 1. Multiple oil filling holes 203 and multiple oil inlet holes 204 are formed on the inner wall of the oil filling chamber 202. The oil filling port of the oil reservoir 201 is fixedly connected to the inner wall of the oil inlet hole 204. A fixing plate 210 is fixedly connected to the side wall of the multiple oil reservoirs 201. A connection hole 205 is formed on the inner wall of the oil reservoir 201. A connector 206 is fixedly connected to the inner wall of the connection hole 205. A connecting pipe 207 is fixedly connected to the inner wall of the connector 206. An oil level monitoring sensor 208 is fixedly connected to the inner wall of the oil reservoir 201. A controller 209 is fixedly connected to the side wall of the fixing plate 210. The controller 209 is electrically connected to the oil level monitoring sensor 208. The controller 209 is electrically connected to the electric telescopic cylinder 301. Through the lubrication assembly, the lubricating oil inside the oil reservoir 201, under pressure, enters the oil injection chamber 202 through the oil inlet 204. Multiple oil injection holes 203 inside the oil injection chamber 202 ensure that the lubricating oil is evenly injected onto the surface of the pitch bearing body 1's balls. When the rotor of the pitch bearing body 1 rotates, it drives the balls of the pitch bearing body 1 to rotate, thus ensuring that the lubricating oil is evenly distributed inside the pitch bearing body 1, providing good lubrication during operation. The connector 206 and connecting pipe 207 facilitate connection between the oil reservoir 201 and an external main lubrication system, allowing for easy replenishment of the oil level inside the oil reservoir 201. The controller 209, oil level monitoring sensor 208, and electric telescopic cylinder 301 work together in a coordinated manner. The oil level monitoring sensor 208 facilitates real-time monitoring of the oil level inside the oil reservoir 201, and transmits the monitored data to the controller 209, connecting the controller 209 to the external main lubrication system. When the controller 209 receives a signal from the oil level monitoring sensor 208 indicating insufficient oil in the oil reservoir 201, it activates the external main lubrication system to replenish the oil reservoir 201. Simultaneously, when it is necessary to increase the amount of oil injected into the pitch bearing body 1 by the lubrication assembly, the controller 209 activates the electric telescopic cylinder 301, causing its telescopic shaft to move. This movement of the telescopic shaft drives the extrusion assembly inside the lubrication assembly to extrude the lubricating oil, thereby increasing the amount of oil discharged through the oil injection hole 203 and improving the lubrication effect. The controller 209, as a common control component, is considered prior art in this application and will not be described in detail here.

[0017] Furthermore, the extrusion assembly includes multiple electric telescopic cylinders 301, all of which are fixedly connected to the side wall of the oil storage box 201. A connecting block 302 is fixedly connected to the surface of the telescopic shaft of each electric telescopic cylinder 301. A sliding hole 303 is provided on the side wall of the oil storage box 201. A sliding column 304 is slidably connected to the inner wall of the sliding hole 303. The surface of the sliding column 304 is fixedly connected to the inner wall of the connecting block 302. An extrusion plate 305 is fixedly connected to one end of the sliding column 304. The extrusion plate 305 is slidably connected to the inner wall of the electric telescopic cylinder 301. A sliding sealing ring 306 is slidably connected to the inner wall of the oil storage box 201. The inner wall of the extrusion plate 305 is fixedly connected to the inner wall of the sliding sealing ring 306. The fixed connection, through the set extrusion component, causes the telescopic shaft of the electric telescopic cylinder 301 to move, thereby driving the connecting block 302, sliding column 304 and extrusion plate 305 to move. The movement of the extrusion plate 305 facilitates the extrusion of the oil storage box 201 space, thereby pushing the lubricating oil inside the oil storage box 201 to flow into the oil injection chamber 202 and then out through the oil injection hole 203. By adjusting the speed at which the lubricating oil inside the oil injection chamber 202 is discharged through the oil injection hole 203, the lubrication effect on the pitch bearing body 1 is improved. The set sliding sealing ring 306 facilitates the improvement of the tightness between the extrusion plate 305 and the electric telescopic cylinder 301, thereby improving the extrusion effect.

[0018] Working Principle: Through the lubrication components, the lubricating oil inside the oil reservoir 201, under pressure, enters the oil injection chamber 202 through the oil inlet 204. Multiple oil injection holes 203 inside the oil injection chamber 202 ensure that the lubricating oil is evenly injected onto the surface of the balls in the pitch bearing body 1. When the rotor of the pitch bearing body 1 rotates, it drives the balls to rotate, thus ensuring that the lubricating oil is evenly distributed inside the pitch bearing body 1, providing good lubrication during operation. The connector 206 and connecting pipe 207 facilitate connection between the oil reservoir 201 and an external main lubrication system, allowing for easy replenishment of the oil level in the oil reservoir 201. The controller 209, oil level monitoring sensor 208, and electric telescopic cylinder 301 work together in conjunction. This allows for real-time monitoring of the oil level inside the oil reservoir 201 via the oil level monitoring sensor 208. The monitored data is transmitted to the controller 209, connecting the controller 209 to an external main lubrication system. When the controller receives a signal from the oil level monitoring sensor 208 indicating insufficient oil in the oil reservoir 201, it activates the external main lubrication system to replenish the oil reservoir 201. Furthermore, when it is necessary to increase the amount of oil injected into the pitch bearing body 1 by the lubrication assembly, the controller 209 activates the electric telescopic cylinder 301, causing its telescopic shaft to move. This movement of the telescopic shaft drives the extrusion component inside the lubrication assembly to extrude lubricating oil, thereby increasing the amount of oil discharged through the oil injection hole 203 and improving the lubrication effect.

[0019] Secondly, the compression assembly causes the telescopic shaft of the electric telescopic cylinder 301 to move, thereby driving the connecting block 302, sliding column 304 and compression plate 305 to move. The movement of the compression plate 305 facilitates the compression of the oil storage box 201 space, thereby pushing the lubricating oil inside the oil storage box 201 to flow into the oil injection chamber 202 and then out through the oil injection hole 203. By adjusting the speed at which the lubricating oil inside the oil injection chamber 202 is discharged through the oil injection hole 203, the lubrication effect on the pitch bearing body 1 is improved. The sliding sealing ring 306 facilitates the improvement of the tightness between the compression plate 305 and the electric telescopic cylinder 301, thereby improving the compression effect.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wind turbine pitch bearing anti-jamming lubrication device, comprising a pitch bearing body (1), wherein the pitch bearing body (1) is composed of a rotor, a stator, and balls, characterized in that, Also includes: A lubrication assembly is disposed on the side wall of the pitch bearing body (1) for uniformly lubricating the interior of the pitch bearing body (1); An extrusion assembly is disposed on the inner wall of a lubrication assembly and is used to extrude lubricating oil inside the lubrication assembly. The lubrication assembly includes multiple oil reservoirs (201), each of which is disposed on the side wall of the pitch bearing body (1). An oil injection chamber (202) is provided inside the rotor of the pitch bearing body (1). Multiple oil injection holes (203) are provided on the inner wall of the oil injection chamber (202), and multiple oil inlet holes (204) are provided on the inner wall of the oil injection chamber (202). The oil injection port of the oil reservoir (201) is fixedly connected to the inner wall of the oil inlet hole (204). A fixed plate (210) is fixedly connected to the side wall of the multiple oil reservoirs (201). The extrusion assembly includes multiple electric telescopic cylinders (301), each of which is fixedly connected to the side wall of the oil storage box (201). A connecting block (302) is fixedly connected to the telescopic shaft surface of each electric telescopic cylinder (301). A sliding hole (303) is provided on the side wall of the oil storage box (201). A sliding column (304) is slidably connected to the inner wall of the sliding hole (303). The surface of the sliding column (304) is fixedly connected to the inner wall of the connecting block (302). An extrusion plate (305) is fixedly connected to one end of the sliding column (304). The extrusion plate (305) is slidably connected to the inner wall of the electric telescopic cylinder (301).

2. The anti-jamming lubrication device for wind turbine pitch bearings according to claim 1, characterized in that: The inner wall of the oil storage box (201) is provided with a connection hole (205), and a connector (206) is fixedly connected to the inner wall of the connection hole (205). A connecting pipe (207) is fixedly connected to the inner wall of the connector (206).

3. The anti-jamming lubrication device for wind turbine pitch bearings according to claim 1, characterized in that: An oil level monitoring sensor (208) is fixedly connected to the inner wall of the oil storage box (201), and a controller (209) is fixedly connected to the side wall of the fixed plate (210). The controller (209) is electrically connected to the oil level monitoring sensor (208) and the controller (209) is electrically connected to the electric telescopic cylinder (301).

4. The anti-jamming lubrication device for wind turbine pitch bearings according to claim 1, characterized in that: The inner wall of the oil storage box (201) is slidably connected with a sliding sealing ring (306), and the extrusion plate (305) is fixedly connected to the inner wall of the sliding sealing ring (306).

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