CN210800013U - Yawing variable pitch gear box backlash adjusting structure - Google Patents
Yawing variable pitch gear box backlash adjusting structure Download PDFInfo
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- CN210800013U CN210800013U CN201921178902.9U CN201921178902U CN210800013U CN 210800013 U CN210800013 U CN 210800013U CN 201921178902 U CN201921178902 U CN 201921178902U CN 210800013 U CN210800013 U CN 210800013U
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Abstract
The utility model discloses a structure is adjusted to driftage change oar gear box backlash, include: a yaw variable pitch gearbox and a frame; the yaw variable pitch gearbox is mounted to the frame through bolts; the yawing variable pitch gearbox comprises an output gear for outputting power and a flange plate for mounting the yawing variable pitch gearbox; the rack is provided with a gear ring; the output gear is meshed with the gear ring; the flange plate is provided with a plurality of bolt holes for bolts to pass through; at least one of the plurality of bolt holes is a kidney-shaped hole; the width of the kidney-shaped hole is the outer diameter value of the thread of the bolt; the length direction of the kidney-shaped hole is larger than the thread outer diameter value of the bolt; the length direction of the kidney-shaped hole is parallel to a connecting line of the central line of the output gear and the central line of the gear ring. The utility model discloses a structure is adjusted to driftage change oar gear box backlash, the adjustment is efficient.
Description
Technical Field
The utility model relates to a structure is adjusted to driftage change oar gear box backlash.
Background
In the process of installing the yawing variable pitch gearbox on the fan, the meshing gap between the output gear of the yawing variable pitch gearbox and the inner gear ring of the rack needs to be considered, and the meshing gap influences the transmission precision, the vibration noise and the service life of the yawing variable pitch gearbox.
The existing commonly used yaw variable pitch gear box controls the backlash by processing the eccentricity of a flange plate of the gear box and adjusting the position of the flange plate, and the specific operation is as follows.
And (3) mounting the gear box on the frame, enabling the mark at the maximum eccentricity position on the box body to be vertical to the connecting line of the output gear and the inner gear ring, screwing a part of bolts to fix the gear box on the frame, and taking the state as the initial state of mounting the gear box. And detecting the backlash value between the output gear and the inner gear ring at the moment, and comparing the backlash value with the designed backlash value. If the actual backlash value is within the permissible value range at this time, all the mounting bolts are tightened. And if the actual backlash value is larger than or smaller than the design allowable value, removing the installed bolts, and rotating the flange plate according to the clockwise or anticlockwise direction so as to adjust the eccentric size to enable the maximum eccentric position to be far away from or close to the rack, and repeating the steps until the ideal backlash value is obtained.
The existing stage yaw variable pitch gearbox backlash adjustment has the following defects: the processing is more complicated; the yaw variable pitch gearbox has heavier dead weight and smaller operation space, and the bolt is required to be repeatedly adjusted and disassembled for multiple times during installation, so the installation and adjustment efficiency is lower; because the gear box position angle is uncertain during installation, the position angle such as motor terminal box is also uncertain.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of prior art, the utility model provides a structure is adjusted to driftage change oar gear box backlash through gear box and ring gear center distance regulation backlash.
In order to achieve the above object, the utility model adopts the following scheme:
a yaw variable pitch gearbox backlash adjustment structure comprising: a yaw variable pitch gearbox and a frame; the yaw variable pitch gearbox is mounted to the frame through bolts; the yawing variable pitch gearbox comprises an output gear for outputting power and a flange plate for mounting the yawing variable pitch gearbox; the rack is provided with a gear ring; the output gear is meshed with the gear ring; the flange plate is provided with a plurality of bolt holes for bolts to pass through; at least one of the plurality of bolt holes is a kidney-shaped hole; the width of the kidney-shaped hole is the outer diameter value of the thread of the bolt; the length direction of the kidney-shaped hole is larger than the thread outer diameter value of the bolt; the length direction of the kidney-shaped hole is parallel to a connecting line of the central line of the output gear and the central line of the gear ring.
Further, a projection plane is defined by the yawing variable pitch gearbox backlash adjusting structure; the hole depth direction of the waist-shaped hole, the central line of the output gear and the central line of the gear ring are all vertical to the projection plane; the length direction of the kidney-shaped hole is parallel to a connecting line of the projection of the central line of the output gear and the central line of the gear ring on the projection plane.
Further, a plurality of bolt holes are located on the same pitch circle.
Further, the bolt holes are all kidney-shaped holes; the length directions of the kidney-shaped holes are parallel to each other.
Further, only one of the plurality of bolt holes is a kidney-shaped hole; the diameters of the bolt holes except the kidney-shaped holes in the plurality of bolt holes are larger than the thread outer diameter value of the bolts.
A yaw variable pitch gearbox backlash adjustment structure comprising: a yaw variable pitch gearbox and a frame; the yaw variable pitch gearbox is mounted to the frame through bolts; the yawing variable pitch gearbox comprises an output gear for outputting power and a flange plate for mounting the yawing variable pitch gearbox; the rack is provided with a gear ring; the output gear is meshed with the gear ring; the flange plate is provided with a plurality of bolt holes for bolts to pass through; at least one of the bolt holes is a kidney-shaped hole which can guide the bolt to slide in the bolt hole along a straight line; a projection plane is defined by the yawing variable-pitch gearbox backlash adjusting structure; the hole depth direction of the waist-shaped hole, the central line of the output gear and the central line of the gear ring are all vertical to the projection plane; the sliding direction of the bolt in the kidney-shaped hole is parallel to a connecting line of the projection of the central line of the output gear and the central line of the gear ring on the projection plane.
Further, a plurality of bolt holes are located on the same pitch circle.
Further, the bolt holes are all kidney-shaped holes; the length directions of the kidney-shaped holes are parallel to each other.
Further, only one of the plurality of bolt holes is a kidney-shaped hole; the diameters of the bolt holes except the kidney-shaped holes in the plurality of bolt holes are larger than the thread outer diameter value of the bolts.
Further, the kidney-shaped hole, the center line of the output gear and the center line of the ring gear are arranged in a straight line.
The utility model discloses an useful part lies in, compares the tradition and adjusts the sideshake through rotation angle adjustment eccentric dimension, can utilize the direction in waist type hole to adjust the sideshake through adjusting gear box and ring gear center distance. The rotating flange plate does not need to be repeatedly disassembled, and the adjusting efficiency is high. The gear box does not need to be rotated by a large margin, the position and the angle of the gear box are determined during installation, and the position and the angle of a motor junction box and the like are determined.
Drawings
Fig. 1 is a schematic view of a yaw pitch gearbox backlash adjustment structure according to a first embodiment of the present invention;
fig. 2 is a schematic view of a yawing variable pitch gearbox backlash adjusting structure according to a second embodiment of the invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in FIG. 1, a yaw pitch gearbox backlash adjustment structure 100 as a first embodiment comprises: yaw variable pitch gearbox and frame. The yaw pitch gearbox is mounted to the frame by bolts. The yaw pitch gearbox comprises an output gear 20 for outputting power and a flange plate 10 for mounting the yaw pitch gearbox. The frame is provided with a ring gear 30. The output gear 20 meshes with the ring gear 30. The flange 10 is provided with a plurality of bolt holes 11 through which bolts pass. A plurality of bolt holes 11 are located on the same pitch circle.
At least one of the plurality of bolt holes 11 is a kidney-shaped hole. The kidney-shaped hole guide bolt slides in a straight line in the bolt hole 11.
The width of the kidney-shaped hole is the thread outer diameter value of the bolt. The length direction of the kidney-shaped hole is larger than the thread outer diameter value of the bolt. The diameter of the bolt hole 11 except for the kidney-shaped hole among the plurality of bolt holes 11 is larger than the thread outer diameter value of the bolt.
The size of the kidney-shaped hole in the sliding direction of the bolt is the length of the kidney-shaped hole. The width direction of the waist-shaped hole is vertical to the length direction of the waist-shaped hole.
The longitudinal direction of the kidney-shaped hole is parallel to the line connecting the central line of the output gear 20 and the central line of the gear ring 30. Referring to the plane of the drawing, the length direction of the pattern hole is parallel to a line connecting the center line of the output gear 20 and the center line of the ring gear 30.
Specifically, the yaw pitch gearbox backlash adjustment mechanism 100 defines a projection plane. The hole depth direction of the kidney-shaped hole, the center line of the output gear 20 and the center line of the gear ring 30 are all perpendicular to the projection plane. The length direction of the kidney-shaped hole is parallel to a connecting line of the projection of the central line of the output gear 20 and the central line of the gear ring 30 on the projection plane. The sliding direction of the bolt in the kidney-shaped hole is parallel to a connecting line of the projection of the central line of the output gear 20 and the central line of the gear ring 30 on the projection plane.
In a specific embodiment, the bolt holes 11 are all kidney-shaped holes. The length directions of the kidney-shaped holes are parallel to each other.
In use, the yaw pitch gearbox is mounted to the frame with the kidney holes, the centre line of the output gear 20 and the centre line of the gear ring 30 in line. The value of the backlash between the output gear 20 and the ring gear 30 is measured at this time. The measured backlash value is compared to a design backlash value. If the actual backlash value is within the permissible value range at this time, all the mounting bolts are tightened. If the backlash needs to be adjusted, all the bolts do not need to be disassembled, the bolt edges can be loosened and adjusted leftwards or rightwards as shown in the reference drawing 1 until the actual backlash value is within the allowable value range, and all the mounting bolts are screwed. The leftward arrow in fig. 1 indicates the adjustment direction for increasing the backlash, and the rightward arrow indicates the adjustment direction for decreasing the backlash.
As shown in FIG. 2, a yaw pitch gearbox backlash adjustment structure 200 as a second embodiment comprises: yaw variable pitch gearbox and frame. The yaw pitch gearbox is mounted to the frame by bolts. The yaw pitch gearbox comprises an output gear 220 for outputting power and a flange plate 210 for mounting the yaw pitch gearbox. The frame is provided with a ring gear 230. The output gear 220 meshes with the ring gear 230. The flange 210 is provided with a plurality of bolt holes 211 through which bolts pass. The bolt holes 211 are located on the same pitch circle.
The yaw pitch gearbox backlash adjustment structure 200 of FIG. 2 differs from the yaw pitch gearbox backlash adjustment structure 100 of FIG. 1 in the shape of the plurality of bolt holes. Specifically, only one of the plurality of bolt holes 211 of the yaw pitch gearbox backlash adjustment structure 200 of FIG. 2 is a kidney-shaped hole. The bolt hole 211 encircled by circle 1 in fig. 2 is a kidney-shaped hole. The remaining bolt holes 211 are round holes with a diameter larger than the thread outer diameter value of the bolt.
In use, the yaw pitch gearbox is mounted to the frame with the kidney holes, the centre line of the output gear 220 and the centre line of the ring gear 230 in alignment. Bolts are installed at bolt holes 211 circled by the circles 1 and 2. The value of backlash between the output gear 220 and the ring gear 230 at this time is tested and compared with the design value of backlash. And if the actual backlash value is within the allowable value range, tightening all the bolts. If the backlash needs to be adjusted, all the bolts do not need to be disassembled, the bolt edges can be loosened and adjusted leftwards or rightwards as shown in the reference figure 2 until the actual backlash value is within the allowable value range, and all the mounting bolts are tightened. The left arrow in the figure is the adjustment direction for increasing the backlash and the right arrow is the adjustment direction for decreasing the backlash. In addition, the bolt holes 211 encircled by the ring 1 have the same outer diameter as the bolt, and the diameters of the other bolt holes 211 are larger than the thread outer diameter of the bolt, so that the bolt installed at the ring 1 can slide along the length direction of the kidney-shaped hole. Or the flange 210 may be turned slightly around the bolts in the ring 1 to adjust the backlash.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (10)
1. A yaw variable pitch gearbox backlash adjustment structure comprising: a yaw variable pitch gearbox and a frame; the yaw variable pitch gearbox is mounted to the frame through bolts; the yawing variable pitch gearbox comprises an output gear for outputting power and a flange plate for mounting the yawing variable pitch gearbox; the rack is provided with a gear ring; the output gear is meshed with the gear ring; the flange plate is provided with a plurality of bolt holes for bolts to pass through; wherein at least one of the plurality of bolt holes is a kidney-shaped hole; the width of the kidney-shaped hole is the thread outer diameter value of the bolt; the length direction of the kidney-shaped hole is larger than the thread outer diameter value of the bolt; the length direction of the kidney-shaped hole is parallel to a connecting line of the central line of the output gear and the central line of the gear ring.
2. The yaw pitch gearbox backlash adjustment arrangement of claim 1,
a projection plane is defined by the yawing variable pitch gearbox backlash adjusting structure; the hole depth direction of the waist-shaped hole, the central line of the output gear and the central line of the gear ring are all perpendicular to the projection plane; the length direction of the waist-shaped hole is parallel to a connecting line of the projection of the central line of the output gear and the central line of the gear ring on the projection plane.
3. The yaw pitch gearbox backlash adjustment arrangement of claim 1,
a plurality of the bolt holes are located on the same reference circle.
4. The yaw pitch gearbox backlash adjustment arrangement of claim 1,
the bolt holes are all kidney-shaped holes; the length directions of the kidney-shaped holes are parallel to each other.
5. The yaw pitch gearbox backlash adjustment arrangement of claim 1,
only one of the bolt holes is a kidney-shaped hole; the diameters of the bolt holes except for the kidney-shaped holes in the plurality of bolt holes are larger than the thread outer diameter value of the bolts.
6. A yaw variable pitch gearbox backlash adjustment structure comprising: a yaw variable pitch gearbox and a frame; the yaw variable pitch gearbox is mounted to the frame through bolts; the yawing variable pitch gearbox comprises an output gear for outputting power and a flange plate for mounting the yawing variable pitch gearbox; the rack is provided with a gear ring; the output gear is meshed with the gear ring; the flange plate is provided with a plurality of bolt holes for bolts to pass through; the bolt is characterized in that at least one of the bolt holes is a kidney-shaped hole which can guide a bolt to slide in the bolt hole along a straight line; a projection plane is defined by the yawing variable pitch gearbox backlash adjusting structure; the hole depth direction of the waist-shaped hole, the central line of the output gear and the central line of the gear ring are all perpendicular to the projection plane; the sliding direction of the bolt in the waist-shaped hole is parallel to a connecting line of the projection of the central line of the output gear and the central line of the gear ring on the projection plane.
7. The yaw pitch gearbox backlash adjustment arrangement of claim 6,
a plurality of the bolt holes are located on the same reference circle.
8. The yaw pitch gearbox backlash adjustment arrangement of claim 6,
the bolt holes are all kidney-shaped holes; the length directions of the kidney-shaped holes are parallel to each other.
9. The yaw pitch gearbox backlash adjustment arrangement of claim 6,
only one of the bolt holes is a kidney-shaped hole; the diameters of the bolt holes except for the kidney-shaped holes in the plurality of bolt holes are larger than the thread outer diameter value of the bolts.
10. The yaw pitch gearbox backlash adjustment arrangement of claim 9,
the kidney-shaped hole, the center line of the output gear and the center line of the gear ring are arranged in a straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921178902.9U CN210800013U (en) | 2019-07-25 | 2019-07-25 | Yawing variable pitch gear box backlash adjusting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921178902.9U CN210800013U (en) | 2019-07-25 | 2019-07-25 | Yawing variable pitch gear box backlash adjusting structure |
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| Publication Number | Publication Date |
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| CN210800013U true CN210800013U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921178902.9U Active CN210800013U (en) | 2019-07-25 | 2019-07-25 | Yawing variable pitch gear box backlash adjusting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323400A (en) * | 2021-12-31 | 2022-04-12 | 四川飞亚动力科技股份有限公司 | Torsion detection device for crankshaft flange plate |
-
2019
- 2019-07-25 CN CN201921178902.9U patent/CN210800013U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323400A (en) * | 2021-12-31 | 2022-04-12 | 四川飞亚动力科技股份有限公司 | Torsion detection device for crankshaft flange plate |
| CN114323400B (en) * | 2021-12-31 | 2024-01-30 | 四川飞亚动力科技股份有限公司 | Torsion detection device of crankshaft flange |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220909 Address after: No.79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province 211103 Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 211103 No.30, Houjiao Road, gaoxinyuan, Jiangning District, Nanjing City, Jiangsu Province Patentee before: NANJING HIGH SPEED GEAR MANUFACTURING Co.,Ltd. |