A wind turbine encoder changeover positioning calibration structure

Abstract

This utility model relates to the field of wind power generation technology, specifically to a wind turbine encoder type change positioning calibration structure. It includes a snap-fit ​​cap, with multiple connecting strips fixedly connected to the outer wall of the snap-fit ​​cap. A positioning mechanism is provided at one end of each connecting strip, a driving mechanism is provided on one side of the positioning mechanism, and a calibration mechanism is provided below the positioning mechanism. The positioning mechanism includes a mounting ring, with four first sliding grooves on the top of the mounting ring. A first slider is slidably connected within each first sliding groove, and an arc-shaped positioning block is fixedly connected to one end of each first slider. A V-shaped groove is provided on the inner side of the arc-shaped positioning block. This utility model utilizes gears, a gear ring, and the arc-shaped positioning block. Rotating the snap-fit ​​cap drives the rotating shaft to rotate, which in turn drives the first slider to slide in the first sliding groove until the V-shaped groove engages with the surface of the motor output shaft. This causes the axes of the arc-shaped positioning block and the mounting ring to coincide with the axis of the motor output shaft, thereby aligning the axis of the encoder being calibrated with the axis of the motor output shaft.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and more specifically, to a wind turbine encoder changeover positioning calibration structure. Background Technology

[0002] An encoder is a sensor whose core function is to convert physical quantities such as the position and speed of mechanical motion into electrical signals. On a wind turbine, the encoder is like the "eye" of the system, used to accurately measure the speed and position of the motor, the angle of the yaw system, and the blade angle of the pitch system. Wind turbines are mostly equipped with hollow shaft encoders. When changing the model to replace the original old encoder, it is necessary to locate and calibrate it.

[0003] In existing technology, after the hollow shaft encoder is installed at the output end of the motor, electrical detection methods are used to check whether the encoder shaft center coincides with the motor output shaft center. However, if the two do not coincide, the encoder needs to be removed and repositioned and calibrated, which may be repeated many times, reducing the installation efficiency of the encoder. In view of this, we propose a fan encoder changeover positioning and calibration structure. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a wind turbine encoder changeover positioning and calibration structure to solve the problems of existing solutions.

[0005] To achieve the above objectives, this utility model provides a wind turbine encoder changeover positioning and calibration structure, including a snap-fit ​​cap. Multiple connecting strips are fixedly connected to the outer wall of the snap-fit ​​cap. One end of each connecting strip is provided with a positioning mechanism for clamping the motor output shaft. A drive mechanism for rotating the positioning mechanism is provided on one side of the positioning mechanism. Below the positioning mechanism are two calibration mechanisms for clamping and calibrating the encoder. The two calibration mechanisms are symmetrically distributed on both sides below the positioning mechanism. The positioning mechanism includes a mounting ring, and one end of each of the multiple connecting strips is fixedly connected to the surface of the mounting ring. The top of the mounting ring has four first sliding grooves, and a first slider is slidably connected in the first sliding groove. One end of the first slider is fixedly connected to an arc-shaped positioning block, and a V-shaped groove is formed on the inner side of the arc-shaped positioning block.

[0006] The beneficial effects of this utility model are: 1) In this wind turbine encoder changeover positioning and calibration structure, the rotating cap is driven by the gear, gear ring, and arc-shaped positioning block. This rotation drives the rotating shaft to rotate, which in turn drives the gear and gear ring to rotate. This causes the first slider to slide in the first slide groove, bringing the arc-shaped positioning block closer to the motor output shaft until the V-shaped slot is engaged with the surface of the motor output shaft. This makes the axis of the arc-shaped positioning block and the mounting ring coincide with the axis of the motor output shaft. This ensures that the axis of the encoder being calibrated coincides with the axis of the motor output shaft, achieving the purpose of positioning and calibrating the encoder. This minimizes the number of times the encoder needs to be readjusted and improves installation efficiency.

[0007] 2) In this wind turbine encoder changeover positioning and calibration structure, by adjusting the length of the first telescopic rod, the horizontal plate, and the second telescopic rod, the mounting rod and the horizontal plate are moved downwards until the bottom of the horizontal plate touches the top of the encoder. Then, the second telescopic rod is adjusted to extend it, which moves the mounting rod and calibration strips closer to the encoder, so that the four calibration strips contact the outer wall of the encoder and apply a certain force to the encoder. This ensures that the encoder shaft is always aligned with the shaft of the motor output shaft during installation, without any offset, thus further improving installation efficiency.

[0008] Based on the above technical solution, the present invention can be further improved as follows: As a further improvement to this technical solution, a connecting block is fixedly connected to the bottom of the first slider, and a plurality of second sliding grooves are opened at the bottom of the mounting ring. A second slider is slidably connected inside the second sliding grooves. The driving mechanism includes a toothed ring. The top of the toothed ring is fixedly connected to the bottom of the second slider. A plurality of arc-shaped slots are opened at the bottom of the toothed ring. The arc-shaped slots are slidably connected to the connecting block. A power component is provided on one side of the toothed ring.

[0009] The beneficial effect of adopting the above-mentioned further solution is that the power generated by the power component causes the gear ring to rotate, and the second slider slides with the gear ring in the second slide groove, thereby driving the connecting block to slide in the arc-shaped slot, which in turn drives the first slider to slide in the first slide groove, thereby driving the arc-shaped positioning block to move closer to or away from the center of the mounting ring. When the snap cap is snapped on the top of the motor output shaft and the arc-shaped positioning block is close to the center of the mounting ring, the V-shaped slot is snapped on the motor output shaft, so that the axis of the arc-shaped positioning block and the mounting ring coincides with the axis of the motor output shaft, thereby achieving the purpose of calibrating the encoder axis.

[0010] As a further improvement to this technical solution, the power component includes a fixing block, one end of which is fixedly connected to the outer wall of the mounting ring, a rotating shaft is rotatably connected to the top of the fixing block, a screw cap is fixedly connected to the top of the rotating shaft, and a gear is fixedly connected to the bottom of the rotating shaft through the fixing block, with one side of the gear meshing with one side of the gear ring.

[0011] The beneficial effect of adopting the above-mentioned further solution is that, by holding the screw cap and rotating it through the shaft and gear, the shaft is rotated, which in turn drives the gear to rotate around the shaft, which in turn drives the gear ring to rotate, thereby moving the arc-shaped positioning block to prepare for positioning and calibration of the encoder.

[0012] As a further improvement to this technical solution, the two calibration mechanisms have the same structure. The calibration mechanism includes an L-shaped fixed bracket, one end of which is fixedly connected to the inner wall of the mounting ring. A first telescopic rod is fixedly connected to the bottom of the L-shaped fixed bracket, and a second telescopic rod is fixedly connected to the output end of the first telescopic rod. A calibration component is provided at the output end of the second telescopic rod.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the output ends of both the first and second telescopic rods are provided with scale lines so that the two first and second telescopic rods can be extended or shortened by the same length. Through the setting of the L-shaped fixing bracket, the first telescopic rod and the second telescopic rod, the center line between the two L-shaped fixing brackets and the calibration component is coincident with the axis of the mounting ring. The calibration component positions and calibrates the encoder sleeved on the motor output shaft, so that the encoder axis is also coincident with the axis of the mounting ring. In this way, the encoder axis is coincident with the axis of the motor output shaft, achieving the purpose of positioning and calibrating the encoder. Then, by extending the first telescopic rod, the encoder is moved closer to the motor end cover and fixed on the motor end cover. During the installation process, the encoder axis is always coincident with the axis of the motor output shaft, minimizing repeated disassembly and assembly.

[0014] As a further improvement to this technical solution, the two calibration components have the same structure. Each calibration component includes a mounting rod, one side of which is fixedly connected to the output end of the second telescopic rod. The mounting rod has two third sliding grooves, which are symmetrically arranged at both ends of the other side of the mounting rod. A third slider is slidably connected to each third sliding groove, and a calibration strip is fixedly connected to one side of each third slider.

[0015] The beneficial effect of adopting the above-mentioned further solution is that, by adjusting the length of the second telescopic rod through the mounting rod, the third slider, and the calibration strip, the mounting rod and the calibration strip are brought closer to the encoder in preparation for calibration and positioning.

[0016] As a further improvement to this technical solution, the mounting rod is provided with two fixing bolts, which are symmetrically arranged at both ends of one side of the mounting rod. One end of each fixing bolt passes through the mounting rod and the third slider and is connected to the third sliding groove.

[0017] The beneficial effect of adopting the above-mentioned further solution is that by fixing the bolts and then loosening the bolts, the third slider can slide in the third groove, thereby changing the distance between the two calibration strips to position and calibrate encoders of different sizes.

[0018] As a further improvement to this technical solution, a horizontal plate is fixedly connected to the upper part of the other side of the mounting rod.

[0019] The beneficial effect of adopting the above-mentioned further solution is that, through the horizontal plate, as the calibration strip approaches the encoder, the operator lifts the encoder by hand so that the top of the encoder fits against the horizontal plate, so as to prevent the encoder shaft from tilting after being touched by the calibration strip, and to keep the encoder shaft always aligned with the shaft of the motor output shaft.

[0020] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external first-view structure of this utility model; Figure 2 This is a schematic diagram of the external second-view structure of this utility model; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the external third-view structure of this utility model; Figure 5 This utility model Figure 1 A magnified view of part A; Figure 6 This utility model Figure 2 A magnified view of part B.

[0022] The meanings of the labels in the diagram are as follows: 1. Snap-fit ​​cap; 2. Connecting strip; 3. Positioning mechanism; 31. Mounting ring; 32. First slide groove; 33. First slider; 34. Arc-shaped positioning block; 35. V-shaped slot; 36. Connecting block; 37. Second slide groove; 38. Second slider; 4. Drive mechanism; 41. Gear ring; 42. Arc-shaped slot; 43. Power component; 431. Fixing block; 432. Rotating shaft; 433. Tightening cap; 434. Gear; 5. Calibration mechanism; 51. L-shaped fixed bracket; 52. First telescopic rod; 53. Second telescopic rod; 54. Calibration component; 541. Mounting rod; 542. Third slide groove; 543. Third slider; 544. Calibration strip; 545. Fixing bolt; 546. Horizontal plate. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-6 As shown, this embodiment provides a wind turbine encoder changeover positioning and calibration structure, including a snap-fit ​​cap 1. Multiple connecting strips 2 are fixedly connected to the outer wall of the snap-fit ​​cap 1. One end of each connecting strip 2 is provided with a positioning mechanism 3 for clamping the motor output shaft. A drive mechanism 4 for driving the positioning mechanism 3 is provided on one side of the positioning mechanism 3. Below the positioning mechanism 3, two calibration mechanisms 5 are provided for clamping and calibrating the encoder. The two calibration mechanisms 5 are symmetrically distributed on both sides below the positioning mechanism 3. The positioning mechanism 3 includes a mounting ring 31. One end of each of the multiple connecting strips 2 is fixedly connected to the surface of the mounting ring 31. The top of the mounting ring 31 has four first sliding grooves 32. A first slider 33 is slidably connected in the first sliding grooves 32. One end of the first slider 33 is fixedly connected to an arc-shaped positioning block 34. A V-shaped groove 35 is provided on the inner side of the arc-shaped positioning block 34. The V-shaped groove 35 can adapt to motor output shafts of different thicknesses. When the drive mechanism 4 is turned, it drives the four first sliders 33 to slide in the four first sliding grooves 32 respectively, thereby causing the V-shaped groove 35 on the arc-shaped positioning block 34 to be engaged on the motor output shaft. The arc-shaped positioning block 34 is engaged on the motor output shaft, so that the axis of the mounting ring 31 coincides with the axis of the motor output shaft.

[0025] Furthermore, a connecting block 36 is fixedly connected to the bottom of the first slider 33, and multiple second sliding grooves 37 are opened at the bottom of the mounting ring 31. A second slider 38 is slidably connected inside the second sliding grooves 37. The driving mechanism 4 includes a gear ring 41, the top of which is fixedly connected to the bottom of the second slider 38. Multiple arc-shaped slots 42 are opened at the bottom of the gear ring 41, and these slots are slidably connected to the connecting block 36. A power component 43 is provided on one side of the gear ring 41, generating power to rotate the gear ring 41, causing the second slider 38 to rotate accordingly. The toothed ring 41 slides in the second slide groove 37, which in turn drives the connecting block 36 to slide in the arc-shaped slot 42, which in turn drives the first slider 33 to slide in the first slide groove 32, which in turn drives the arc-shaped positioning block 34 to move closer to or away from the center of the mounting ring 31. When the snap cap 1 is snapped on the top of the motor output shaft and the arc-shaped positioning block 34 is close to the center of the mounting ring 31, the V-shaped slot 35 is snapped on the motor output shaft, so that the axis of the arc-shaped positioning block 34 and the mounting ring 31 coincides with the axis of the motor output shaft, so as to achieve the purpose of calibrating the encoder axis.

[0026] Furthermore, the power component 43 includes a fixing block 431. One end of the fixing block 431 is fixedly connected to the outer wall of the mounting ring 31. A rotating shaft 432 is rotatably connected to the top of the fixing block 431. A screw cap 433 is fixedly connected to the top of the rotating shaft 432. A gear 434 is fixedly connected to the bottom of the rotating shaft 432 through the fixing block 431. A locking bolt is installed at the connection between the rotating shaft 432 and the fixing block 431. The position of the rotating shaft 432 is restricted by the locking bolt. One side of the gear 434 meshes with one side of the gear ring 41. By holding the screw cap 433 and rotating it, the rotating shaft 432 is rotated, which in turn drives the gear 434 to rotate around the rotating shaft 432 as the axis, which in turn drives the gear ring 41 to rotate. This can drive the arc-shaped positioning block 34 to move, in preparation for positioning and calibrating the encoder.

[0027] Furthermore, the two calibration mechanisms 5 have identical structures. Each calibration mechanism 5 includes an L-shaped fixed bracket 51, one end of which is fixedly connected to the inner wall of the mounting ring 31. A first telescopic rod 52 is fixedly connected to the bottom of the L-shaped fixed bracket 51, and the bottom of the L-shaped fixed bracket 51 is parallel to the bottom of the mounting ring 31. A second telescopic rod 53 is fixedly connected to the output end of the first telescopic rod 52, and a calibration element 54 is provided at the output end of the second telescopic rod 53. Both the output ends of the first telescopic rod 52 and the second telescopic rod 53 are provided with scale lines to ensure that the two telescopic rods 52 and 53 are aligned. 53 extends or shortens by the same length, and the positions of the first telescopic rod 52 and the second telescopic rod 53 are restricted by locking screws. Through the setting of L-shaped fixed bracket 51, first telescopic rod 52 and second telescopic rod 53, the center lines between the two L-shaped fixed brackets 51 and the calibration piece 54 are all coincident with the axis of the mounting ring 31. The calibration piece 54 positions the encoder sleeved on the motor output shaft, so that the encoder axis is also coincident with the axis of the mounting ring 31. In this way, the encoder axis coincides with the axis of the motor output shaft, achieving the purpose of positioning and calibrating the encoder.

[0028] Furthermore, the two calibration components 54 have the same structure. Each calibration component 54 includes a mounting rod 541. The center of one side of the mounting rod 541 is fixedly connected to the output end of the second telescopic rod 53. The mounting rod 541 has two third sliding grooves 542, which are symmetrically arranged at both ends of the other side of the mounting rod 541. A third slider 543 is slidably connected to the third sliding groove 542. A calibration strip 544 is fixedly connected to one side of the third slider 543. By adjusting the length of the second telescopic rod 53 through the mounting rod 541, the third slider 543, and the calibration strip 544, the mounting rod 541 and the calibration strip 544 are brought closer to the encoder to prepare for positioning and calibration of the encoder, so that the encoder shaft center coincides with the shaft center of the motor output shaft.

[0029] Furthermore, the mounting rod 541 is provided with two fixing bolts 545, which are symmetrically arranged at both ends of one side of the mounting rod 541. One end of the fixing bolt 545 passes through the mounting rod 541 and the third slider 543 and is connected to the third slide groove 542. By loosening the fixing bolt 545, the third slider 543 can slide in the third slide groove 542, thereby changing the distance between the two calibration strips 544 to position and calibrate encoders of different sizes.

[0030] Furthermore, a horizontal plate 546 is fixedly connected to the upper part of the other side of the mounting rod 541. The top of the horizontal plate 546 is also parallel to the bottom of the mounting ring 31. Through the horizontal plate 546, the first telescopic rod 52 extends, driving the mounting rod 541 and the horizontal plate 546 to move downward until the bottom of the horizontal plate 546 touches the top of the encoder, so as to prevent the encoder shaft from tilting after being positioned and calibrated by the calibration strip 544, and to keep the encoder shaft always aligned with the shaft of the motor output shaft.

[0031] In summary, the working principle of this solution is as follows: When this positioning and calibration structure is needed to assist in the installation of the hollow shaft encoder, first, the hollow shaft encoder is placed on the motor output shaft. Then, the snap-fit ​​cap 1 is installed against the end face of the motor output shaft. While pressing the snap-fit ​​cap 1 to prevent it from moving, the operator holds the screw cap 433 and rotates the screw cap 433, which drives the rotating shaft 432 to rotate, thereby driving the gear 434 and the gear ring 41 to rotate. The second slider 38 slides in the second slide groove 37 along with the gear ring 41, thereby driving the connecting block 36 to slide in the arc-shaped slot 42, thereby driving the first slider 33 to slide in the first slide groove 32, so that the arc-shaped positioning block 34 is close to the motor output shaft, until the V-shaped snap-fit ​​groove 35 is tightly against the surface of the motor output shaft. Then, the operator stops pressing the snap-fit ​​cap 1 and tightens the locking bolt to limit the rotating shaft 432 to fix the position of the arc-shaped positioning block 34, so that the axis of the arc-shaped positioning block 34 and the mounting ring 31 coincides with the axis of the motor output shaft. After aligning and fixing the motor output shaft, the encoder position is determined as follows: Manually pull down the first telescopic rods 52 on both sides until the lower surface of the horizontal plate 546 contacts the upper surface of the encoder. Maintain this position, and simultaneously adjust the second telescopic rods 53 with both hands until the calibration strips 544 connected to the ends of the second telescopic rods 53 contact the periphery of the encoder. Because the encoder is not fixed at this point, the second telescopic rods 53 on both sides can push the encoder to move. The arrangement of the two calibration strips 544 on the same side ensures that the pushed encoder can only move horizontally, so there is no need to worry about offset. While pushing the encoder to move slightly, observe the scale lines on the second telescopic rods 53 until the scale lines on both sides are the same. This scale line is the final determined position of the encoder. Record this scale value. Then, you can first rotate the locking screw on either side of the second telescopic rod 53, and... Ensure the locking position matches the recorded scale line position to fix one of the second telescopic rods 53. Then fix the other second telescopic rod 53. Under the constraint of the scale line, the fixed second telescopic rod 53 clamps the programmer. To further explain, after determining the scale line position of the second telescopic rod 53, during fixing, it can be moved slightly towards the center to ensure the clamping force on the encoder after both second telescopic rods 53 are fixed. However, it must be emphasized that after fixing, the scale line values ​​of the two second telescopic rods 53 must be the same to ensure that the axis of the encoder and the motor output shaft are the same axis. Then, the mounting surface of the encoder can be pressed against the motor and fixed by adhesive, screws, or welding. Under the limit of the second telescopic rod 53, the position of the encoder will not change during fixing, ensuring the accuracy of the encoder installation position.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fan encoder retrofit positioning calibration structure, characterized by: Includes a snap-fit ​​cap (1), the outer wall of which is fixedly connected to multiple connecting strips (2). One end of each connecting strip (2) is provided with a positioning mechanism (3) for clamping the motor output shaft. A drive mechanism (4) for driving the positioning mechanism (3) is provided on one side of the positioning mechanism (3). Below the positioning mechanism (3) are two calibration mechanisms (5) for clamping and calibrating the encoder. The two calibration mechanisms (5) are symmetrically distributed on both sides below the positioning mechanism (3), wherein: The positioning mechanism (3) includes a mounting ring (31), and one end of each of the multiple connecting strips (2) is fixedly connected to the surface of the mounting ring (31). The top of the mounting ring (31) is provided with four first sliding grooves (32), and a first slider (33) is slidably connected in the first sliding groove (32). One end of the first slider (33) is fixedly connected to an arc-shaped positioning block (34), and a V-shaped slot (35) is provided on the inner side of the arc-shaped positioning block (34).

2. The fan encoder retrofit positioning calibration structure of claim 1, wherein: The first slider (33) is fixedly connected to the bottom of the connecting block (36). The mounting ring (31) has multiple second sliding grooves (37) at its bottom. The second slider (38) is slidably connected inside the second sliding groove (37). The driving mechanism (4) includes a toothed ring (41). The top of the toothed ring (41) is fixedly connected to the bottom of the second slider (38). The bottom of the toothed ring (41) has multiple arc-shaped slots (42). The arc-shaped slots (42) are slidably connected to the connecting block (36). A power component (43) is provided on one side of the toothed ring (41).

3. The fan encoder retrofit positioning calibration structure of claim 2, wherein: The power component (43) includes a fixing block (431), one end of which is fixedly connected to the outer wall of the mounting ring (31). A rotating shaft (432) is rotatably connected to the top of the fixing block (431). A screw cap (433) is fixedly connected to the top of the rotating shaft (432). A gear (434) is fixedly connected to the bottom of the rotating shaft (432) through the fixing block (431). One side of the gear (434) meshes with one side of the gear ring (41).

4. The fan encoder retrofit positioning calibration structure of claim 1, wherein: The two calibration mechanisms (5) have the same structure. The calibration mechanism (5) includes an L-shaped fixed bracket (51). One end of the L-shaped fixed bracket (51) is fixedly connected to the inner wall of the mounting ring (31). A first telescopic rod (52) is fixedly connected to the bottom of the L-shaped fixed bracket (51). A second telescopic rod (53) is fixedly connected to the output end of the first telescopic rod (52). A calibration component (54) is provided at the output end of the second telescopic rod (53).

5. The fan encoder retrofit positioning calibration structure of claim 4, wherein: The two calibration components (54) have the same structure. Each calibration component (54) includes a mounting rod (541). The center of one side of the mounting rod (541) is fixedly connected to the output end of the second telescopic rod (53). The mounting rod (541) has two third sliding grooves (542). The two third sliding grooves (542) are symmetrically arranged at both ends of the other side of the mounting rod (541). The third sliding groove (542) is slidably connected to a third slider (543). A calibration strip (544) is fixedly connected to one side of the third slider (543).

6. The fan encoder retrofit positioning calibration structure of claim 5, wherein: The mounting rod (541) is provided with two fixing bolts (545). The two fixing bolts (545) are symmetrically arranged at both ends of one side of the mounting rod (541). One end of the fixing bolt (545) passes through the mounting rod (541) and the third slider (543) and is connected to the third slide groove (542).

7. The fan encoder retrofit positioning calibration structure of claim 5, wherein: A horizontal plate (546) is fixedly connected to the upper part of the other side of the mounting rod (541).

Images