Variable-pitch bearing protection device

Abstract

The utility model relates to the technical field of variable pitch bearings, in particular to a variable pitch bearing protection device which comprises a variable pitch driving motor and a motor support, the bottom of the variable pitch driving motor is fixedly connected with the motor support, and the other end of the motor support is fixedly connected with a connecting body. The free end of the variable-pitch driving motor is fixedly connected with a small gear, the outer side of the small gear is meshed with a variable-pitch bearing, the upper portion of the variable-pitch bearing is connected with a connecting body, and the front side of the connecting body is fixedly connected with a pre-cleaning device; by arranging the air pump and the air pipe, when the pinion is meshed with the variable pitch bearing, air is exhausted into the hollow frame through the air pump and then exhausted through the inclined pipe, at the moment, the variable pitch bearing can be pretreated, and it is guaranteed that solid impurities are not prone to being left between teeth of the variable pitch bearing; the stable meshing rotation of the small gear and the variable pitch bearing is ensured, and the purpose of protecting the small gear and the variable pitch bearing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of variable pitch bearings, in particular to a variable pitch bearing protection device. Background Art

[0002] Pitch bearings, also known as blade bearings, are components of modern wind turbines that connect the rotor hub to the rotor blades. These bearings allow for the necessary oscillations to control the load and power of the wind turbine. The pitch system adjusts the aerodynamic angle of attack to bring the blades to the desired position. Pitch systems are also used to handle emergency shutdowns of turbine systems.

[0003] When the existing variable pitch bearing is in use, it adopts the variable pitch motor to drive the pinion to rotate, and the pinion drives the variable pitch bearing to rotate, thereby achieving the purpose of variable pitch. During use, since the pinion and the variable pitch bearing are both located inside the chamber and lubricated with lubricating oil, it is very easy for impurities to be contaminated between the teeth of the variable pitch bearing. During subsequent rotation, the pinion and the variable pitch bearing are meshed, and solid impurities are located therein. Over a long period of time, it is easy to cause gear wear that seriously affects use. Therefore, a variable pitch bearing protection device is proposed to address the above problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a pitch bearing protection device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] As an optional solution of the variable pitch bearing protection device of the utility model, wherein: a variable pitch bearing protection device includes a variable pitch drive motor and a motor bracket, the bottom of the variable pitch drive motor is fixedly connected to the motor bracket, and the other end of the motor bracket is fixedly connected to the connector;

[0007] The free end of the pitch drive motor is fixedly connected to a pinion, the outer side of the pinion is meshed with a pitch bearing, the upper side of the pitch bearing is connected to a connector, and the front side of the connector is fixedly connected to a pre-cleaning device;

[0008] The pre-cleaning device includes a moving component and a processing component, the bottom of the moving component is fixedly connected to the processing component, and the outer side of the processing component is slidably connected to the moving component;

[0009] The processing component includes an air pump and a movable frame. The outer side of the air pump is fixedly connected to the movable frame. The output end of the air pump is connected to an air pipe. The bottom of the air pipe is connected to a hollow frame. The outer side of the hollow frame is connected to evenly distributed inclined tubes. The bottom of the hollow frame is fixedly connected to a sealing plate.

[0010] When the existing variable pitch bearing is in use, it adopts the variable pitch motor to drive the pinion to rotate, and the pinion drives the variable pitch bearing to rotate, thereby achieving the purpose of variable pitch. During use, since the pinion and the variable pitch bearing are both located inside the chamber, and lubrication is carried out with lubricating oil, it is very easy for impurities to be contaminated and located between the teeth of the variable pitch bearing. During subsequent rotation, the pinion and the variable pitch bearing are meshed, and solid impurities are located therein. Over a long period of time, it is easy to cause gear wear that seriously affects use. When this device is used, an external power supply is connected. When the variable pitch drive motor rotates to drive the pinion to rotate, the pinion drives the outer variable pitch bearing to rotate. At this time, the air pump inside the pre-cleaning device is started, and the air enters the hollow frame through the air pipe, and is then discharged by multiple sets of inclined pipes. At this time, the variable pitch bearing can be targetedly cleaned to ensure that when the variable pitch bearing is meshed with the pinion, there are no fixed impurities at the meshing point that affect the use of the variable pitch bearing. At this time, the pinion and the variable pitch bearing are protected.

[0011] As an optional solution of the variable pitch bearing protection device described in the utility model, the inclined tubes are provided in multiple configurations, and the inclined tubes are provided in an inclined configuration.

[0012] The inclined pipe is arranged at an angle, and the discharge end of the inclined pipe faces the pitch bearing. At this time, targeted cleaning can be performed on the teeth of the pitch bearing.

[0013] As an optional solution of the variable pitch bearing protection device described in the utility model, the moving assembly includes a fixed frame and a rotating motor, the outer side of the fixed frame is fixedly connected to the connecting body, the interior of the fixed frame is fixedly connected to the rotating motor, the main shaft of the rotating motor is fixedly connected to a reciprocating screw, the outer side of the reciprocating screw is slidably connected to a slider, the other end of the slider is fixedly connected to a moving ring, the outer side of the moving ring is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to a connecting column, and the bottom of the connecting column is fixedly connected to the processing assembly.

[0014] As an optional solution of the pitch bearing protection device described in the utility model, guide frames are fixedly connected to both sides of the connecting rod, and the outer side of the guide frame is fixedly connected to the fixed frame.

[0015] When cleaning the pitch bearing teeth, the reciprocating screw is driven to rotate by starting the rotating motor, and the reciprocating screw drives the outer slider to move, thereby moving the moving ring, and the moving ring can drive the connecting rod to move. At this time, under the action of the guide frame, the connecting rod is ensured to move up and down stably, and the connecting column at the bottom of the connecting rod can ensure that the moving frame below is driven up and down, so that the tilt tube can carry out targeted and comprehensive cleaning of the pitch bearing teeth.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model provides an air pump and an air pipe. When the pinion and the pitch bearing are engaged, the air is discharged into the hollow frame through the air pump and then discharged through the inclined inclined pipe. At this time, the pitch bearing can be pre-treated to ensure that solid impurities are not easily left between the teeth of the pitch bearing, thereby ensuring stable meshing and rotation of the pinion and the pitch bearing, thereby protecting the pinion and the pitch bearing.

[0018] After the pitch bearing is processed, the reciprocating screw is driven to rotate by starting the rotating motor, and the reciprocating screw drives the slider to move, so that the moving ring drives the outer connecting rod to move, and the connecting column drives the moving frame to move up and down, thereby ensuring the stability of the tilt tube and cleaning the impurities between the teeth of the pitch bearing;

[0019] A guide frame is provided on the inner wall of the fixed frame. At this time, the stable up and down sliding of the connecting rod and the guide frame can ensure the stable movement of the connecting column, thereby driving the stable up and down movement of the inclined tube. After the cleaning work is completed, the purpose of sealing the fixed frame can be achieved by cooperating with the sealing plate and the fixed frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the pre-cleaning device of the utility model.

[0022] In the figure: 1. Pitch drive motor; 2. Motor bracket; 3. Pinion; 4. Pitch bearing; 5. Connector; 6. Pre-cleaning device; 601. Fixed frame; 602. Rotating motor; 603. Reciprocating screw; 604. Slider; 605. Moving ring; 606. Connecting rod; 607. Guide frame; 608. Connecting column; 609. Air pump; 610. Moving frame; 611. Air pipe; 612. Hollow frame; 613. Tilt tube; 614. Sealing plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figure 1 and Figure 2 , the utility model provides a technical solution:

[0026] A pitch bearing protection device includes a pitch drive motor 1 and a motor bracket 2. The bottom of the pitch drive motor 1 is fixedly connected to the motor bracket 2, and the other end of the motor bracket 2 is fixedly connected to a connector 5.

[0027] The free end of the pitch drive motor 1 is fixedly connected to a pinion 3, the outer side of the pinion 3 is meshed with a pitch bearing 4, the upper side of the pitch bearing 4 is connected to a connector 5, and the front side of the connector 5 is fixedly connected to a pre-cleaning device 6;

[0028] The pre-cleaning device 6 includes a moving component and a processing component. The bottom of the moving component is fixedly connected to the processing component, and the outer side of the processing component is slidably connected to the moving component.

[0029] The above-mentioned processing component includes an air pump 609 and a movable frame 610. The outer side of the above-mentioned air pump 609 is fixedly connected to the movable frame 610. The output end of the above-mentioned air pump 609 is connected to an air pipe 611. The bottom of the above-mentioned air pipe 611 is connected to a hollow frame 612. The outer side of the above-mentioned hollow frame 612 is connected to evenly distributed inclined tubes 613. The bottom of the above-mentioned hollow frame 612 is fixedly connected to a sealing plate 614.

[0030] When the existing variable pitch bearing 4 is in use, it adopts the variable pitch motor to drive the pinion 3 to rotate, and the pinion 3 drives the variable pitch bearing 4 to rotate, thereby achieving the purpose of variable pitch. However, when in use, since the pinion 3 and the variable pitch bearing 4 are both located inside the chamber, and lubrication is carried out by lubricating oil, it is very easy to be contaminated with impurities between the teeth of the variable pitch bearing 4. During subsequent rotation, the pinion 3 and the variable pitch bearing 4 are engaged, and solid impurities are located therein. Over time, it is easy to cause gear wear and seriously affect the use. When the present device is used, External power supply, when the pitch drive motor 1 rotates to drive the pinion 3 to rotate, the pinion 3 drives the outer pitch bearing 4 to rotate. At this time, by starting the air pump 609 inside the pre-cleaning device 6, the air enters the hollow frame 612 through the air pipe 611, and is then discharged by multiple groups of inclined tubes 613. At this time, the pitch bearing 4 can be cleaned in a targeted manner to ensure that when the pitch bearing 4 is engaged with the pinion 3, there are no fixed impurities at the meshing point that affect the use of the pitch bearing 4. At this time, it plays a role in protecting the pinion 3 and the pitch bearing 4.

[0031] Example 2

[0032] This embodiment is an improvement on embodiment 1. Figure 2 Specifically, the inclined tubes 613 are arranged in multiple numbers, and the inclined tubes 613 are arranged in an inclined manner.

[0033] The inclined pipe 613 is arranged at an angle, and the discharge end of the inclined pipe 613 faces the pitch bearing 4. At this time, the teeth of the pitch bearing 4 can be cleaned in a targeted manner.

[0034] Example 3

[0035] This embodiment is an improvement on embodiment 2. Figure 2 Specifically, the above-mentioned moving component includes a fixed frame 601 and a rotating motor 602. The outer side of the above-mentioned fixed frame 601 is fixedly connected to the connecting body 5. The interior of the above-mentioned fixed frame 601 is fixedly connected to the rotating motor 602. The main shaft of the above-mentioned rotating motor 602 is fixedly connected to the reciprocating screw rod 603. The outer side of the above-mentioned reciprocating screw rod 603 is slidably connected to the slider 604. The other end of the above-mentioned slider 604 is fixedly connected to the moving ring 605. The outer side of the above-mentioned moving ring 605 is fixedly connected to the connecting rod 606. The bottom of the above-mentioned connecting rod 606 is fixedly connected to the connecting column 608. The bottom of the above-mentioned connecting column 608 is fixedly connected to the processing component.

[0036] Guide frames 607 are fixedly connected to both sides of the connecting rod 606 , and the outer sides of the guide frames 607 are fixedly connected to the fixing frame 601 .

[0037] When cleaning the 4 teeth of the pitch bearing, the reciprocating screw 603 is driven to rotate by starting the rotating motor 602, and the reciprocating screw 603 drives the outer slider 604 to move, thereby moving the moving ring 605, and the moving ring 605 can drive the connecting rod 606 to move. At this time, under the action of the guide frame 607, the connecting rod 606 is ensured to move up and down stably, and the connecting column 608 at the bottom of the connecting rod 606 can ensure that the moving frame 610 below is driven to move up and down, thereby allowing the tilt tube 613 to comprehensively clean the 4 teeth of the pitch bearing in a targeted manner.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pitch bearing protection device, characterized in that: It comprises a variable pitch drive motor (1) and a motor bracket (2), wherein the bottom of the variable pitch drive motor (1) is fixedly connected to the motor bracket (2), and the other end of the motor bracket (2) is fixedly connected to a connector (5); The free end of the pitch drive motor (1) is fixedly connected to a pinion (3), the outer side of the pinion (3) is meshed with a pitch bearing (4), the upper side of the pitch bearing (4) is connected to a connector (5), and the front side of the connector (5) is fixedly connected to a pre-cleaning device (6); The pre-cleaning device (6) comprises a moving component and a processing component, the bottom of the moving component is fixedly connected to the processing component, and the outer side of the processing component is slidably connected to the moving component; The processing assembly includes an air pump (609) and a movable frame (610). The outer side of the air pump (609) is fixedly connected to the movable frame (610). The output end of the air pump (609) is connected to an air pipe (611). The bottom of the air pipe (611) is connected to a hollow frame (612). The outer side of the hollow frame (612) is connected to evenly distributed inclined pipes (613). The bottom of the hollow frame (612) is fixedly connected to a sealing plate (614).

2. A pitch bearing protection device according to claim 1, characterized in that: The inclined tubes (613) are arranged in a plurality, and the inclined tubes (613) are arranged in an inclined manner.

3. The pitch bearing protection device according to claim 1, characterized in that: The moving assembly comprises a fixed frame (601) and a rotating motor (602), the outer side of the fixed frame (601) is fixedly connected to the connecting body (5), the interior of the fixed frame (601) is fixedly connected to the rotating motor (602), the main shaft of the rotating motor (602) is fixedly connected to a reciprocating screw rod (603), the outer side of the reciprocating screw rod (603) is slidably connected to a slider (604), the other end of the slider (604) is fixedly connected to a moving ring (605), the outer side of the moving ring (605) is fixedly connected to a connecting rod (606), the bottom of the connecting rod (606) is fixedly connected to a connecting column (608), and the bottom of the connecting column (608) is fixedly connected to the processing assembly.

4. A pitch bearing protection device according to claim 3, characterized in that: Guide frames (607) are fixedly connected to both sides of the connecting rod (606), and the outer sides of the guide frames (607) are fixedly connected to the fixed frame (601).

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