Variable pitch bearing cracking early warning device

Abstract

The utility model provides a variable pitch bearing cracking early warning device which comprises a fixing base, a limiting base is fixed to the side of the fixing base, a threaded base is welded to the limiting base, a threaded column is rotatably installed in the threaded base, a ring base is rotatably installed in the fixing base, a fixing frame is welded to the inner wall of the ring base, and a fixed support is welded to the inner wall of the ring base. A fixed groove and an open groove are formed in the fixed frame, a fixed block is movably installed in the fixed groove, a movable block is movably installed in the open groove, and probes are movably installed on the movable block and the fixed block. When the variable pitch bearing cracking early warning device is used, the probes on the fixed block and the movable block make contact with a fixed ring and a rotating ring of a bearing respectively, comprehensive detection of the bearing is achieved through the probes, and the probes move front and back to complete comprehensive and rapid detection of the bearing during detection.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing equipment, specifically a pitch bearing crack early warning device. Background Technology

[0002] Rolling bearings are one of the most critical and important moving parts in wind turbines. Due to the complex stress conditions of wind turbine bearings, especially pitch bearings, the bearings are subjected to significant impacts and vibrations, and are prone to cracking due to low-speed operation or oscillation. Therefore, it is necessary to monitor and provide early warning of their usage status.

[0003] According to patent document CN214787826U, a pitch bearing crack early warning device includes an annular track movably mounted on the outer ring of the pitch bearing. The annular track is axially extended and retracted via a translation device. The annular track and the pitch bearing are arranged concentrically. An early warning maintenance cart is movably mounted on the annular track and moves in a ring on the track via a drive device. In use, this technical solution uses a detection and cleaning pin to abut against the pitch bearing for detection. When a crack appears on the surface of the pitch bearing, the slender detection and cleaning pin is pushed into the cracked area by a compression spring, thereby triggering the alarm mechanism to promptly remind the staff to replace the bearing. Although this technical solution achieves detection and warning, it cannot simultaneously detect both the moving and fixed shafts, which is inconvenient in use. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a pitch bearing crack early warning device to solve the problems mentioned in the background. This invention has a novel structure. In use, the probes on the fixed block and the movable block contact the fixed ring and the rotating ring of the bearing, respectively. The probes enable comprehensive testing of the bearing. During testing, the probes move back and forth to complete a comprehensive and rapid test of the bearing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pitch bearing cracking early warning device, comprising a fixed base, a limiting seat fixed to the side of the fixed base, a threaded seat welded to the limiting seat, a threaded column rotatably mounted inside the threaded seat, a ring seat rotatably mounted inside the fixed base, a fixing frame welded to the inner wall of the ring seat, a fixing groove and a slot respectively opened on the fixing frame, a fixing block movably mounted inside the fixing groove, a movable block movably mounted inside the slot, and probes movably mounted on both the movable block and the fixing block.

[0006] Furthermore, a displacement mechanism is fixedly installed inside the fixing groove, and one end of the displacement mechanism is fixedly installed on the fixing block.

[0007] Furthermore, a lifting mechanism is fixedly installed on the fixed frame, and one end of the lifting mechanism is fixedly installed on the movable block.

[0008] Furthermore, a drive motor is fixedly mounted on the fixed base, and a gear is mounted on the drive motor. The gear is rotatably mounted inside the fixed base.

[0009] Furthermore, the fixed base has an internal cavity, and a toothed ring is rotatably mounted inside the cavity. The toothed ring is fixed on the ring seat and meshes with a gear.

[0010] Furthermore, both the movable block and the fixed block are equipped with a support mechanism inside, and a movable plate is fixed to one end of the support mechanism.

[0011] Furthermore, the movable plate is fixed to one end of the probe, and a support plate is welded to the inner wall of the movable block and the fixed block. The support plate, the movable block, and the fixed block all have openings, and the probe is movably installed inside the openings.

[0012] Furthermore, an electrode sheet is fixed on the support plate, and an electrode plate is fixed on the movable plate. The electrode plate and the electrode sheet are in movable contact. A bearing is movably installed on one side of the probe. The bearing includes a fixed ring and a rotating ring, and a ball bearing is movably installed between the fixed ring and the rotating ring.

[0013] The beneficial effects of this utility model are:

[0014] 1. In this pitch bearing cracking early warning device, the probes on the fixed block and the movable block contact the fixed ring and the rotating ring of the bearing respectively during use. The probes enable comprehensive detection of the bearing. During the detection, the probes move back and forth to complete a comprehensive and rapid detection of the bearing.

[0015] 2. This pitch bearing crack early warning device uses a threaded column to rotate inside a threaded seat, and quickly adjusts the fixed diameter according to different installation spaces, making it easy to fix the seat on the side of the bearing for rapid detection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a pitch bearing crack early warning device according to the present invention;

[0017] Figure 2 This is an enlarged structural diagram of point A of the pitch bearing crack early warning device of this utility model;

[0018] Figure 3 This is a partial sectional view of the fixed base of the pitch bearing crack early warning device of this utility model.

[0019] Figure 4 This is a side view cross-sectional structural diagram of the movable block of a pitch bearing crack early warning device according to the present invention;

[0020] In the diagram: 1. Fixed seat; 2. Limiting seat; 3. Threaded seat; 4. Threaded post; 5. Ring seat; 6. Drive motor; 7. Fixed frame; 8. Fixed groove; 9. Displacement mechanism; 10. Lifting mechanism; 11. Slot; 12. Movable block; 13. Fixed block; 14. Probe; 15. Gear; 16. Gear ring; 17. Fixed ring; 18. Rotating ring; 19. Ball bearing; 20. Movable plate; 21. Support plate; 22. Electrode sheet; 23. Electrode plate; 24. Opening; 25. Support mechanism. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: a pitch bearing cracking early warning device, including a fixed base 1, a limiting seat 2 fixed on the side of the fixed base 1, a threaded seat 3 welded on the limiting seat 2, a threaded column 4 rotatably installed inside the threaded seat 3, a ring seat 5 rotatably installed inside the fixed base 1, a fixed frame 7 welded on the inner wall of the ring seat 5, a fixed groove 8 and a slot 11 respectively opened on the fixed frame 7, a fixed block 13 movably installed inside the fixed groove 8, a movable block 12 movably installed inside the slot 11, probes 14 movably installed on both the movable block 12 and the fixed block 13, a displacement mechanism 9 fixedly installed inside the fixed groove 8, one end of the displacement mechanism 9 fixedly installed on the fixed block 13, the displacement mechanism 9 and the lifting mechanism 10 are both linear reciprocating electric push rods, the displacement mechanism 9 and the lifting mechanism 10 change the position of the probe 14, and the probe 14 completes the rapid adjustment of different positions.

[0023] In this embodiment, a lifting mechanism 10 is fixedly installed on the fixed frame 7. One end of the lifting mechanism 10 is fixedly installed on the movable block 12. A drive motor 6 is fixedly installed on the fixed base 1. A gear 15 is installed on the drive motor 6. The gear 15 is rotatably installed inside the fixed base 1. The fixed base 1 has a cavity inside. A toothed ring 16 is rotatably installed inside the cavity. The toothed ring 16 is fixed on the ring seat 5. The toothed ring 16 cooperates with the gear 15. The gear 15 drives the toothed ring 16 to rotate. The toothed ring 16 drives the ring seat 5 to rotate. The ring seat 5 rotates around the bearing for comprehensive inspection.

[0024] In this embodiment, a support mechanism 25 is fixed inside both the movable block 12 and the fixed block 13. A movable plate 20 is fixed to one end of the support mechanism 25. The movable plate 20 is fixed to one end of the probe 14. A support plate 21 is welded to the inner wall of the movable block 12 and the fixed block 13. An opening 24 is opened on both the support plate 21, the movable block 12, and the fixed block 13. The probe 14 is movably installed inside the opening 24. An electrode plate 22 is fixed on the support plate 21. An electrode plate 23 is fixed on the movable plate 20. The electrode plate 23 and the electrode plate 22 are in movable contact. A bearing is movably installed on one side of the probe 14. The bearing includes a fixed ring 17 and a rotating ring 18. A ball bearing 19 is movably installed between the fixed ring 17 and the rotating ring 18. The support mechanism 25 is a support spring. The support spring pushes the movable plate 20 to move downward. When one end of the probe 14 enters the crack later, the electrode plate 22 and the electrode plate 23 come into contact and are energized to provide an early warning.

[0025] In use, the fixed seat 1 is mounted on one side of the device via a bearing. A threaded post 4 rotates inside the threaded seat 3, contacting the fixed point. The fixed diameter is adjusted according to the size of the fixed space to facilitate rapid installation at different mounting points. After the limit seat 2 and the fixed seat 1 are fixed, the displacement mechanism 9 and the lifting mechanism 10 are activated to move the probe 14 to the side of the fixed ring 17 and the rotating ring 18. When the probe 14 contacts the fixed ring 17 and the rotating ring 18, the drive motor 6 is activated. The drive motor 6 drives the toothed ring 16 to rotate via the gear 15. The toothed ring 16 drives the ring seat 5 to rotate, and the rotation of the ring seat 5 causes the fixed frame 7 to rotate around the bearing. Rotation: After the fixed frame 7 rotates one revolution, the displacement mechanism 9 is activated to drive the fixed block 13 to move inside the fixed groove 8. The fixed block 13 moves to adjust the position of the probe 14. After the probe 14 is in position, the ring seat 5 is rotated in the opposite direction. The ring seat 5 rotates in the opposite direction to complete the detection of the other revolution of the fixed ring 17, thus facilitating the multi-point detection of the fixed ring 17. When the probe 14 enters the crack, the probe 14 moves downward under the push of the support mechanism 25. At the same time as the probe 14 moves downward, the movable plate 20 moves simultaneously. After the movable plate 20 and the support plate 21 come into contact, the electrode plate 22 and the electrode plate 23 come into contact to connect the external display device and power it on to complete the early warning use.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pitch bearing cracking early warning device, comprising a fixed base (1), characterized in that: The fixed seat (1) has a limiting seat (2) fixed on its side. A threaded seat (3) is welded on the limiting seat (2). A threaded column (4) is rotatably installed inside the threaded seat (3). A ring seat (5) is rotatably installed inside the fixed seat (1). A fixing frame (7) is welded on the inner wall of the ring seat (5). A fixing groove (8) and a slot (11) are respectively opened on the fixing frame (7). A fixing block (13) is movably installed inside the fixing groove (8). A movable block (12) is movably installed inside the slot (11). A probe (14) is movably installed on both the movable block (12) and the fixing block (13).

2. The cracking early-warning device for a variable pitch bearing according to claim 1, characterized in that: A displacement mechanism (9) is fixedly installed inside the fixed groove (8), and one end of the displacement mechanism (9) is fixedly installed on the fixed block (13).

3. The cracking early-warning device of a variable pitch bearing according to claim 1, characterized in that: A lifting mechanism (10) is fixedly installed on the fixed frame (7), and one end of the lifting mechanism (10) is fixedly installed on the movable block (12).

4. The cracking early-warning device of a variable pitch bearing according to claim 1, characterized in that: A drive motor (6) is fixedly installed on the fixed base (1), and a gear (15) is installed on the drive motor (6). The gear (15) is rotatably installed inside the fixed base (1).

5. The cracking early-warning device of a variable pitch bearing according to claim 4, characterized in that: The fixed seat (1) has a cavity inside, and a toothed ring (16) is rotatably installed inside the cavity. The toothed ring (16) is fixed on the ring seat (5) and the toothed ring (16) cooperates with the gear (15).

6. The cracking early-warning device of a variable pitch bearing according to claim 1, characterized in that: Both the movable block (12) and the fixed block (13) are equipped with a support mechanism (25), and a movable plate (20) is fixed to one end of the support mechanism (25).

7. The cracking early-warning device of a variable pitch bearing according to claim 6, characterized in that: The movable plate (20) is fixed at one end of the probe (14). A support plate (21) is welded to the inner wall of the movable block (12) and the fixed block (13). An opening (24) is opened on the support plate (21), the movable block (12), and the fixed block (13). The probe (14) is movably installed inside the opening (24).

8. The pitch bearing cracking early warning device according to claim 7, characterized in that: An electrode plate (22) is fixed on the support plate (21), and an electrode plate (23) is fixed on the movable plate (20). The electrode plate (23) and the electrode plate (22) are in contact with each other. A bearing is movably installed on one side of the probe (14). The bearing includes a fixed ring (17) and a rotating ring (18). A ball bearing (19) is movably installed between the fixed ring (17) and the rotating ring (18).

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