Fault detection device for wind driven generator bearing

Abstract

The utility model relates to the technical field of wind power generation, and discloses a fault detection device for a wind driven generator bearing, which comprises a detection box, a support plate I is fixedly arranged on the right side of the detection box, and a detection assembly is arranged on the upper end surface of the support plate I; the detection assembly comprises two first electric push rods, the first electric push rods are fixedly arranged on the upper end face of the first supporting plate, a first mounting plate is arranged in the detection box, the output ends of the first electric push rods are fixedly connected with the right end of the first mounting plate, and connecting rods are fixedly arranged at the four corners of the left side of the first mounting plate. Through the arrangement of the detection assembly, when the bearing body rotates, the connecting shaft also drives the baffle to rotate synchronously, so that the baffle can block infrared rays emitted by the infrared emitter, and the infrared receiver can be matched with the infrared emitter to detect the blocking interval time of the baffle; and the rolling performance and the rotating speed of the bearing body can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a fault detection device for a bearing of a wind power generator. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. A wind turbine generally consists of components such as a wind wheel, a generator, a direction regulator, a tower, a speed limit safety mechanism and an energy storage device. The working principle of a wind turbine is relatively simple. The wind wheel rotates under the action of wind force, and it converts the kinetic energy of the wind into the mechanical energy of the wind wheel shaft. The generator rotates and generates electricity driven by the wind wheel shaft.

[0003] The bearing is a key component in a wind turbine. Bearing failure will lead to failure of the entire generator. Therefore, it is necessary to perform bearing fault detection.

[0004] According to the search, the Chinese patent document, announcement number: CN215726802U, discloses a detection device for wind turbine fault diagnosis. This scheme first places the bearing body on the outer periphery of the clamp block, then twists the two internal thread blocks to push the two slip rings inward, so that the support frame props up the clamp block, thereby fixing the bearing body, and then drives the two hydraulic rods at the same time, so that the pressure block clamps the outer periphery of the bearing body. The operation is simple and convenient, and then the motor body is driven to make the bearing body run, and then the sound of the bearing body running is collected through the pickup, and then the data is transmitted to the processor. Since the sound emitted by the normal bearing and the faulty bearing is different during operation, the processor can be used to determine whether the bearing body is faulty. The detection is simple and efficient, and the result is accurate, which is worth promoting vigorously. However, the detection device for wind turbine fault diagnosis still has defects during use. The motor will also make noise during operation. At this time, the noise will be transmitted to the inside of the box through vibration, thereby causing certain interference to the pickup, thereby reducing the quality of detection. Summary of the invention

[0005] The purpose of the utility model is to provide a fault detection device for a wind turbine bearing, which can solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fault detection device for a wind turbine bearing, comprising a detection box, a support plate 1 is fixedly arranged on the right side of the detection box, and a detection component is arranged on the upper end surface of the support plate 1.

[0007] The detection assembly includes two electric push rods 1, which are fixedly arranged on the upper end surface of a supporting plate 1, a mounting plate 1 is arranged inside the detection box, an output end of the electric push rod 1 is fixedly connected to the right end of the mounting plate 1, connecting rods are fixedly arranged at the four corners on the left side of the mounting plate 1, a mounting plate 2 is fixedly arranged on the other end of the connecting rod, a mounting groove is opened on the left side of the mounting plate 2, a connecting shaft is installed inside the mounting groove, the other end of the connecting shaft is installed on the left side of the mounting plate 1, a baffle is sleeved on the outer side of the connecting shaft, an infrared transmitter is fixedly arranged at the front end of the right side of the mounting plate 2, an infrared receiver is fixedly arranged at the front end of the left side of the mounting plate 1, and a coupling 1 is fixedly arranged at the left end of the connecting shaft.

[0008] Preferably, a support plate 2 is fixedly provided on the left side of the detection box, a motor is fixedly provided on the upper end surface of the support plate 2, a rotating shaft is fixedly provided on the output end of the motor, a mounting seat is fixedly provided on the outer side of the rotating shaft, a bearing body is installed on the outer side of the mounting seat, and a coupling 2 is fixedly provided on the right side of the rotating shaft.

[0009] Preferably, the second coupling matches the first coupling.

[0010] Preferably, both upper and lower end surfaces inside the detection box are provided with fixing components, and the fixing components include electric push rods 2. Both upper and lower end surfaces inside the detection box are fixedly provided with two electric push rods 2, and the output ends of the electric push rods 2 are fixedly provided with clamping plates.

[0011] Preferably, a rubber pad is fixedly provided on the inner side of the clamping plate.

[0012] Preferably, a cabinet door is provided on the left side of the front of the detection box.

[0013] Preferably, a control panel is fixedly disposed on the right side of the front side of the detection box.

[0014] Compared with the prior art, the utility model provides a fault detection device for a wind turbine bearing, which has the following beneficial effects: 1. The utility model sets a detection component, and when the bearing body rotates, the connecting shaft will also drive the baffle to rotate synchronously, so that the baffle can block the infrared emitted by the infrared transmitter, and the infrared receiver can cooperate with the infrared transmitter to detect the interval time of the baffle blocking, and then the rolling performance and rotation speed of the bearing body can be obtained; 2. The utility model sets a fixing component to start the electric push rod 2, and the output end of the electric push rod 2 can drive the clamping plate to move inward, so that the clamping plate can cooperate with the rubber pad to fix the outer wall of the bearing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the utility model.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the other side inside the utility model.

[0018] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0019] Among them: 1. Detection box; 2. Support plate 1; 3. Electric push rod 1; 4. Mounting plate 1; 5. Connecting rod; 6. Mounting plate 2; 7. Connecting shaft; 8. Baffle; 9. Infrared transmitter; 10. Infrared receiver; 11. Coupling 1; 12. Support plate 2; 13. Motor; 14. Rotating shaft; 15. Mounting seat; 16. Bearing body; 17. Electric push rod 2; 18. Clamping plate; 19. Coupling 2; 20. Cabinet door; 21. Control panel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] See also Figure 1-4 , a fault detection device for a wind turbine bearing shown in the figure includes a detection box 1, a support plate 2 is fixedly arranged on the right side of the detection box 1, and a detection component is arranged on the upper end surface of the support plate 2;

[0023] The detection assembly includes two electric push rods 3, which are fixedly arranged on the upper end surface of the support plate 2. A mounting plate 4 is arranged inside the detection box 1. The output end of the electric push rod 3 is fixedly connected to the right end of the mounting plate 4. Connecting rods 5 are fixedly arranged at the four corners on the left side of the mounting plate 4. A mounting plate 6 is fixedly arranged on the other end of the connecting rod 5. A mounting groove is opened on the left side of the mounting plate 6. A connecting shaft 7 is installed inside the mounting groove. The other end of the connecting shaft 7 is installed on the left side of the mounting plate 4. A baffle 8 is sleeved on the outer side of the connecting shaft 7. An infrared transmitter 9 is fixedly arranged at the front end of the right side of the mounting plate 6, an infrared receiver 10 is fixedly arranged at the front end of the left side of the mounting plate 4, and a coupling 11 is fixedly arranged at the left end of the connecting shaft 7.

[0024] See also Figure 2-4 A support plate 12 is fixedly provided on the left side of the detection box 1, a motor 13 is fixedly provided on the upper end surface of the support plate 12, a rotating shaft 14 is fixedly provided on the output end of the motor 13, a mounting seat 15 is fixedly provided on the outer side of the rotating shaft 14, a bearing body 16 is installed on the outer side of the mounting seat 15, and a coupling 19 is fixedly provided on the right side of the rotating shaft 14.

[0025] In this embodiment, the installation seat 15 is provided to facilitate the installation of the bearing body 16 , and the motor 13 is started, so that the motor 13 can drive the rotating shaft 14 to rotate, thereby driving the bearing body 16 to rotate.

[0026] See also Figure 4 , coupling 2 19 and coupling 1 11 match each other.

[0027] In this embodiment, the arrangement of the coupling 1 11 and the coupling 2 19 facilitates the docking of the rotating shaft 14 and the connecting shaft 7 , so that the rotating shaft 14 can synchronously drive the connecting shaft 7 to rotate.

[0028] Working principle: the rotating shaft 14 and the connecting shaft 7 are initially separated. The personnel opens the cabinet door 20, and then the bearing body 16 can be installed on the mounting seat 15. After the bearing body 16 is installed, the personnel starts the electric push rod 17 through the control panel 21. The output end of the electric push rod 17 can drive the clamping plate 18 to move inward, and the clamping plate 18 can cooperate with the rubber pad to fix the outer wall of the bearing body 16; after the bearing body 16 is fixed, the personnel starts the electric push rod 3. The output end of the electric push rod 3 can drive the mounting plate 14, the connecting rod 5, and the mounting plate 26 to move to the left, and then can drive the connecting shaft 7 to move to the left, and the connecting shaft 7 can be docked with the rotating shaft 14 through the coupling 1 11 and the coupling 2 19; after the rotating shaft 14 is docked with the connecting shaft 7, the personnel starts the motor 13, and the output end of the motor 13 can drive the rotating shaft 14 and the bearing body 16 to rotate. The rotating shaft 14 synchronously drives the connecting shaft 7 and the baffle 8 to rotate through the coupling 2 19 and the coupling 1 11, and the baffle 8 can thus block the infrared emitted by the infrared transmitter 9. The infrared receiver 10 cooperates with the infrared transmitter 9 to detect the time of the blocking gap, so as to obtain the rolling performance and rotation speed of the bearing body 16. The personnel can make a fault judgment on the detected bearing body 16 according to the rolling performance and rotation speed of the normal bearing.

[0029] Example 2

[0030] See also Figure 2-3This embodiment further explains Example 1. In the figure, both upper and lower end surfaces inside the detection box 1 are provided with fixed components, and the fixed components include electric push rods 17. Both upper and lower end surfaces inside the detection box 1 are fixedly provided with two electric push rods 17, and the output end of the electric push rod 17 is fixedly provided with a clamping plate 18.

[0031] In this embodiment, the second electric push rod 17 is started, so that the second electric push rod 17 can drive the clamping plate 18 to move inward, and the clamping plate 18 can fix the outer wall of the bearing body 16.

[0032] See also Figure 2-3 A rubber pad is fixedly arranged on the inner side of the clamping plate 18 .

[0033] In this embodiment, the rubber pad can play a role of buffering and increasing friction, so as to better fix the bearing body 16.

[0034] See also Figure 1 A cabinet door 20 is provided on the left side of the front side of the detection box 1 .

[0035] In this embodiment, the cabinet door 20 is opened to facilitate personnel to open the detection box 1 .

[0036] See also Figure 1 A control panel 21 is fixedly arranged on the right side of the front of the detection box 1 .

[0037] In this embodiment, the control panel 21 can control and monitor the electric push rod 1 3 , the motor 13 , the electric push rod 2 17 , the infrared transmitter 9 , and the infrared receiver 10 .

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

[0039] Although 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 the 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 fault detection device for a wind turbine bearing, comprising a detection box (1), characterized in that: A support plate 1 (2) is fixedly arranged on the right side of the detection box (1), and a detection component is arranged on the upper end surface of the support plate 1 (2); The detection assembly comprises two electric push rods (3), the electric push rods (3) being fixedly arranged on the upper end surface of the support plate (2), a mounting plate (4) being arranged inside the detection box (1), the output end of the electric push rod (3) being fixedly connected to the right end of the mounting plate (4), connecting rods (5) being fixedly arranged at the four corners on the left side of the mounting plate (4), a mounting plate (6) being fixedly arranged at the other end of the connecting rod (5), a mounting groove being provided on the left side of the mounting plate (6), a connecting shaft (7) being installed inside the mounting groove, the other end of the connecting shaft (7) being installed on the left side of the mounting plate (4), a baffle (8) being sleeved on the outer side of the connecting shaft (7), an infrared transmitter (9) being fixedly arranged at the front end of the right side of the mounting plate (6), an infrared receiver (10) being fixedly arranged at the front end of the left side of the mounting plate (4), and a coupling (11) being fixedly arranged at the left end of the connecting shaft (7).

2. A fault detection device for a wind turbine bearing according to claim 1, characterized in that: A second support plate (12) is fixedly provided on the left side of the detection box (1), a motor (13) is fixedly provided on the upper end surface of the second support plate (12), a rotating shaft (14) is fixedly provided on the output end of the motor (13), a mounting seat (15) is fixedly provided on the outer side of the rotating shaft (14), a bearing body (16) is installed on the outer side of the mounting seat (15), and a second coupling (19) is fixedly provided on the right side of the rotating shaft (14).

3. A fault detection device for a wind turbine bearing according to claim 2, characterized in that: The second coupling (19) and the first coupling (11) match each other.

4. A fault detection device for a wind turbine bearing according to claim 1, characterized in that: The upper and lower end surfaces of the detection box (1) are both provided with fixed components, the fixed components comprising electric push rods 2 (17), the upper and lower end surfaces of the detection box (1) are both fixedly provided with two electric push rods 2 (17), and the output ends of the electric push rods 2 (17) are fixedly provided with clamping plates (18).

5. A fault detection device for a wind turbine bearing according to claim 4, characterized in that: A rubber pad is fixedly arranged on the inner side of the clamping plate (18).

6. A fault detection device for a wind turbine bearing according to claim 1, characterized in that: A cabinet door (20) is provided on the left side of the front of the detection box (1).

7. A fault detection device for a wind turbine bearing according to claim 1, characterized in that: A control panel (21) is fixedly arranged on the right side of the front side of the detection box (1).

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