CN109058300B - Yaw and pitch bearing structure and method - Google Patents
Yaw and pitch bearing structure and method Download PDFInfo
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- CN109058300B CN109058300B CN201810911639.3A CN201810911639A CN109058300B CN 109058300 B CN109058300 B CN 109058300B CN 201810911639 A CN201810911639 A CN 201810911639A CN 109058300 B CN109058300 B CN 109058300B
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- bearing
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- inner ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a yaw and pitch bearing structure and a method, which solve the problems that the prior art needs to stop to replace a bearing and the cost is increased, have the beneficial effects of effectively shortening the construction period and effectively reducing the replacement cost, and have the following schemes: the utility model provides a driftage, change oar bearing structure, includes bearing inner race that has the teeth of a cogwheel in bearing outer lane, the bearing that sets gradually from the extroversion inwards, bearing inner race and drive tooth meshing, wheel hub or tower section of thick bamboo are connected to the bearing outer lane, and main frame or blade are connected to the ring in the bearing, and the ring is connected so that the ring rotates for bearing outer lane in the bearing with the bearing outer lane through antifriction bearing in the bearing, and the bearing inner race can be dismantled with the ring in the bearing and be connected.
Description
Technical Field
The invention relates to the field of wind power equipment, in particular to a yawing and variable-pitch bearing structure and a method.
Background
In a megawatt wind turbine generator system, yaw and pitch bearings are regarded as core parts of the generator set and are more and more emphasized by manufacturers of all machines, and with the rapid rising of the loading capacity, the problem of tooth surface abrasion of the yaw and pitch bearings is increasingly highlighted, so that how to solve the problem of tooth surface abrasion becomes a great problem in front of the manufacturers of all machines.
Driftage, change oar bearing direct influence driftage, the continuity of the action of changing the oar, stability and precision, however the flank of tooth wearing and tearing phenomenon of bearing is difficult to avoid, and is becoming more serious moreover, and 3-5 years is serious with regard to wearing and tearing under the general condition, and the serious needs of partial wearing and tearing are changed, changes the bearing because inner structure's restriction in the trade at present, can't change certain part alone, all needs the complete machine to dismantle, embodies the not enough in following three aspects:
1) once the whole machine is disassembled, the machine is stopped for a long time, the whole machine cannot be applied to production, the bearing has large mass and large volume, and the replacement usually needs one week, so that huge economic loss is caused, the image of an enterprise is greatly influenced by frequent replacement, and the long-term development of the enterprise is not facilitated;
2) the whole machine is provided with 3 pitch bearings and 1 yaw bearing, the cost for replacing each bearing needs 6w-8w, and the economic cost can be known if all the bearings are replaced, so that the whole replacement cost is very high, and the enterprise burden is increased invisibly;
3) because the whole machine is required to hoist when the bearing is replaced, the weight of the whole machine is 80-100t, the hoisting machine with larger tonnage is required to disassemble and assemble, and more manpower is required for disassembling, replacing and assembling, so that the labor cost and the renting cost of the hoisting machine are greatly improved, and the problem of abrasion of the tooth surface of the bearing is solved only insignificantly in consideration of the high disassembling cost of the whole machine.
4) The replacement of the fan requires more manpower and material resources, the crane equipment is large, and certain potential safety hazards exist.
5) Other current modes of changing the bearing, the structure sets up complicatedly, changes equally and wastes time and energy.
Therefore, a method for improving the tooth surface wear of the gear tooth slewing bearing needs to be researched.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a yaw and pitch bearing structure which can effectively solve the problem of influence of tooth surface abrasion on the whole fan, and can quickly and efficiently finish the replacement of bearing gear teeth without disassembling the whole machine after the bearing tooth surface is abraded.
The specific scheme of the yawing and variable-pitch bearing structure is as follows:
the utility model provides a driftage, change oar bearing structure, includes bearing inner race that has the teeth of a cogwheel in bearing outer lane, the bearing that sets gradually from the extroversion inwards, bearing inner race and drive tooth meshing, wheel hub or tower section of thick bamboo are connected to the bearing outer lane, and main frame or blade are connected to the ring in the bearing, and the ring is connected so that the ring rotates for bearing outer lane in the bearing with the bearing outer lane through antifriction bearing in the bearing, and the bearing inner race can be dismantled with the ring in the bearing and be connected.
When the engine room or the blades rotate, the driving teeth are meshed with the bearing inner ring, and the bearing inner ring drives the bearing middle ring to rotate, so that the rotation of the engine room or the blades is realized. Because the gear tooth part of the bearing inner ring is separated, when the gear tooth surface is seriously worn, especially when the initial meshing part of the pitch bearing is seriously worn, the connecting bolt of the bearing inner ring can be detached, the bearing inner ring is rotated, the gear tooth surface which is seriously worn is rotated to a non-meshing area, and the bearing inner ring is fastened again, so that the worn gear can be conveniently and quickly replaced, and because the rotation can be repeatedly carried out for many times, the gear tooth of the bearing inner ring can completely meet the wear requirement of the whole machine in the whole life cycle, and further, the industrial problem of the gear tooth surface wear of the pitch bearing is thoroughly solved. When the gear tooth part of the bearing inner ring is integrally worn or seriously damaged, the bearing inner ring can be detached and replaced.
Furthermore, the bearing inner ring is connected with the bearing middle ring through a connecting bolt, a plurality of threaded holes are uniformly formed in the inner circumferential direction of the bearing middle ring, and a plurality of through holes matched with the connecting bolt are formed in the bearing inner ring;
wherein, set up two rows of connecting bolts along the diameter direction of bearing inner race, connecting bolt locates the both sides of bearing inner race teeth of a cogwheel, guarantees the reliability of connecting.
The bearing inner ring is of an integral structure or comprises a plurality of sections which can be spliced, grooves or protrusions matched with the grooves are arranged at the end parts of the sections, the sections are spliced to form the bearing inner ring, the structure formed by splicing the sections is convenient to install, and the segmented structure is more convenient to replace for a yaw bearing.
A gasket is arranged at the connecting bolt of the bearing inner ring and is a U-shaped gasket, and the gasket is matched with the inner ring arc of the bearing inner ring.
Further, the rolling bearing is a plurality of rolling bodies, and adjacent rolling bodies are arranged at a set interval.
Furthermore, the bearing inner ring is a component with gear teeth, the gear teeth are uniformly distributed on the inner end surface of the bearing inner ring, and edges are reserved on two sides of the gear teeth of the bearing inner ring.
Furthermore, two sides of the joint of the bearing middle ring and the bearing outer ring are respectively provided with a sealing ring, so that a closed lubricating space is formed between the bearing outer ring and the bearing middle ring.
Furthermore, the gear teeth are arranged in the center of the inner end face of the bearing inner ring.
In order to overcome the defects of the prior art, the invention also provides a method for conveniently maintaining the yaw and pitch bearing structure, which adopts the yaw and pitch bearing structure; aiming at a yaw bearing structure, a bearing inner ring gear is seriously abraded, and a bearing inner ring with gear teeth is directly replaced; for the variable-pitch bearing structure, the bearing meshing area is in a range of 0-90 degrees, the initial meshing position is worn seriously, and only 2-3 teeth are worn normally, when the bearing structure is worn seriously, the bearing structure adopted by the application only needs to rotate the inner ring of the bearing, the tooth surface which is worn seriously is rotated to the non-meshing area, and the inner ring of the bearing is fastened again, so that the maintenance speed is high, the maintenance can be carried out for many times, the replacement cost is low, or the segmented inner ring of the bearing is replaced again.
In order to overcome the defects of the prior art, the invention also provides a yaw and pitch bearing structure which comprises a bearing inner ring, a bearing middle ring and a bearing outer ring with gear teeth, wherein the bearing inner ring, the bearing middle ring and the bearing outer ring are sequentially arranged from inside to outside, the bearing outer ring is meshed with driving teeth, the bearing inner ring is connected with a hub or a tower drum, the bearing middle ring is connected with a main frame or blades, the bearing middle ring is connected with the bearing inner ring through a rolling bearing so that the bearing middle ring rotates relative to the bearing inner ring, and the bearing outer ring is detachably connected with the.
Furthermore, the bearing outer ring is connected with the bearing middle ring through a connecting bolt, a plurality of threaded holes are uniformly formed in the inner circumferential direction of the bearing middle ring, and a plurality of through holes matched with the connecting bolt are formed in the bearing outer ring;
or two rows of connecting bolts are arranged along the diameter direction of the bearing outer ring.
Further, the bearing outer ring is of an integral structure or comprises a plurality of sections which can be spliced.
Furthermore, a gasket is arranged at the connecting bolt of the bearing outer ring, the gasket is a U-shaped gasket, and the gasket is matched with the outer ring arc of the bearing outer ring.
In order to overcome the defects of the prior art, the invention also provides a method for conveniently maintaining the yaw and pitch bearing structure, the yaw and pitch bearing structure is adopted, the bearing outer ring is disassembled aiming at the pitch bearing structure with serious abrasion of the initial meshing part, the bearing outer ring is rotated, the tooth surface with serious abrasion is rotated to a non-meshing area, and the bearing outer ring is fastened again; aiming at a yaw bearing structure, a bearing outer ring gear is seriously abraded, and a bearing outer ring with gear teeth is directly replaced;
or, for the sectional type variable-pitch bearing structure, the bearing outer ring section with serious abrasion can be directly replaced.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention has wide application range through the arrangement of the integral structure, is convenient and quick to rotate the inner ring or the outer ring of the bearing or replace the inner ring or the inner ring of the bearing, greatly shortens the whole construction period, avoids huge cost and long-time halt caused by the disassembly of the whole machine, well solves the industrial problem that the gear surface cannot be replaced after being worn, and practically ensures the safe and reliable operation of the bearing.
2) According to the invention, the bearing inner ring and the bearing middle ring are detachably connected, so that the bearing inner ring or the bearing outer ring is convenient to replace, the original integral bearing does not need to be integrally replaced, the machine does not need to be stopped for a long time, and the economic cost is effectively saved.
3) Through the arrangement of the novel bearing structure, the bearing is convenient to connect with and disassemble from the bearing middle ring, and is convenient to disassemble and assemble, so that the meshing reliability of the bearing inner ring and the driving teeth is ensured.
4) The invention can select different replacing modes of the bearing inner ring or the bearing outer ring according to different conditions, not only has high replacing speed, but also is more convenient to replace the sectional bearing inner ring or the sectional bearing outer ring.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of a bearing structure according to the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
fig. 3 is a schematic cross-sectional view of a bearing structure in embodiment 2 of the present invention;
the bearing comprises a bearing outer ring 1, a bearing outer ring 2, a rolling body 3, a sealing ring 4, a bearing middle ring 5, a bearing inner ring 6, a connecting bolt 7 and a U-shaped gasket 7.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background of the invention, the prior art is not sufficient, and in order to solve the above technical problems, the present application proposes a yaw and pitch bearing structure.
Example 1
In a typical embodiment of the present application, as shown in fig. 1, a yaw and pitch bearing structure includes a bearing outer ring 1, a bearing inner ring 4 and a bearing inner ring 5 with gear teeth, which are sequentially disposed from outside to inside, the bearing inner ring 5 is engaged with driving teeth, the bearing outer ring 1 is connected to a hub or a tower, the bearing inner ring 4 is connected to a main frame or a blade, the bearing inner ring 4 is connected to the bearing outer ring 1 through a rolling bearing so that the bearing inner ring 4 rotates relative to the bearing outer ring 1, the bearing outer ring 1 and the bearing inner ring 4 form a slewing mechanism of a bearing through a rolling element 2, the bearing inner ring 5 is detachably connected to the bearing inner ring 4, the bearing inner ring 4 is an integral structure or includes multiple segments that can be spliced, the ends of the segments are provided with grooves or protrusions that are matched with the grooves, the segments are spliced into the bearing inner ring, and the multi.
When the engine room or the blades rotate, the driving teeth are meshed with the bearing inner ring 5, the bearing inner ring 5 drives the bearing middle ring 4 to rotate, and then the engine room or the blades rotate. Because the gear tooth part of the bearing inner ring 5 is separated, when the gear tooth surface is seriously worn, especially when the initial meshing part of the pitch-variable bearing is seriously worn, the connecting bolt of the bearing inner ring can be detached, the bearing inner ring is rotated, the gear tooth surface which is seriously worn is rotated to a non-meshing area, and the bearing inner ring is fastened again, so that the worn gear can be conveniently and quickly replaced, and because the rotation can be repeated and repeated, the gear tooth of the bearing inner ring can completely meet the wear requirement of the whole machine in the whole life cycle, thereby thoroughly solving the industrial problem of the gear tooth surface wear of the pitch-variable bearing. When the gear tooth part of the bearing inner ring is integrally worn or seriously damaged, the bearing inner ring can be detached and replaced.
The rolling bearing is provided with a plurality of rolling bodies 2, the adjacent rolling bodies 2 are arranged at intervals with set distances, and the rolling bodies 2 are embedded into the outer part of the middle ring of the bearing and the inner part of the outer ring of the bearing.
The bearing inner ring 5 is a component with gear teeth, the gear teeth are uniformly arranged on the inner end surface of the bearing inner ring 5, and two sides of the gear teeth of the bearing inner ring 5 are provided with edges. The two sides of the joint of the bearing middle ring 4 and the bearing outer ring 1 are respectively provided with a sealing ring 3, thus a closed lubricating space is formed between the bearing outer ring 1 and the bearing middle ring 4.
The bearing inner ring 5 is connected with the bearing middle ring 4 through a connecting bolt 6, the bearing inner ring is connected with the bearing middle ring through a connecting bolt, a plurality of threaded holes are uniformly formed in the inner circumferential direction of the bearing middle ring, and a plurality of through holes matched with the connecting bolt are formed in the bearing inner ring; two rows of connecting bolts are arranged along the diameter direction of the bearing inner ring, the connecting bolts are arranged on two sides of the gear teeth of the bearing inner ring, the connecting reliability is guaranteed, and the specification and the number of the connecting bolts are determined according to specific load calculation.
And a gasket is arranged at the connecting bolt of the bearing inner ring, the gasket is a U-shaped gasket, and the gasket is customized according to the inner ring arc of the bearing inner ring 5.
Example 2
In order to overcome the defects of the prior art, as shown in fig. 3, the invention further provides a yaw and pitch bearing structure, which is an external meshing type bearing structure and comprises a bearing inner ring 5, a bearing middle ring 4 and a bearing outer ring 1 with gear teeth, wherein the bearing inner ring 5, the bearing middle ring 4 and the bearing outer ring 1 are sequentially arranged from inside to outside, the bearing outer ring 1 is meshed with driving teeth, the bearing inner ring 4 is connected with a hub or a tower drum, the bearing middle ring 4 is connected with a main frame or blades, the bearing middle ring 4 is connected with the bearing inner ring 5 through a rolling bearing so that the bearing middle ring 4 rotates relative to the bearing inner ring 5, and the bearing outer ring 1 is.
The bearing outer ring 1 is connected with the bearing middle ring 4 through a connecting bolt 6, a plurality of threaded holes are uniformly formed in the inner circumferential direction of the bearing middle ring 4, and a plurality of through holes matched with the connecting bolt 6 are formed in the bearing outer ring 1;
alternatively, two rows of connecting bolts 6 are provided along the diameter direction of the bearing outer ring 1. The bearing outer ring 1 is of an integral structure or comprises a plurality of sections which can be spliced. A washer is arranged at the connecting bolt of the bearing outer ring 1, the washer is a U-shaped washer 7, and the washer is matched with the outer ring arc of the bearing outer ring.
In order to overcome the defects of the prior art, the invention also provides a method for conveniently maintaining the yaw and pitch bearing structure, the yaw and pitch bearing structure is adopted, the bearing outer ring is disassembled aiming at the pitch bearing structure with serious abrasion of the initial meshing part, the bearing outer ring is rotated, the tooth surface with serious abrasion is rotated to a non-meshing area, and the bearing outer ring is fastened again; aiming at a yaw bearing structure, a bearing outer ring gear is seriously abraded, and a bearing outer ring with gear teeth is directly replaced;
or, for the sectional type variable-pitch bearing structure, the bearing outer ring section with serious abrasion can be directly replaced.
In conclusion, the bearing structure provided by the invention has the advantages that the bearing is divided into the outer ring, the middle ring and the inner ring, the problem of gear tooth replacement is well solved, the replacement cost of the whole set of bearing is reduced, the hoisting, transporting and labor cost for the disassembly of the whole machine is saved, the bearing structure is safer and more reliable, the replacement period is greatly shortened, and the normal operation of the whole machine is ensured.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. A yaw and pitch bearing structure is characterized by comprising a bearing outer ring, a bearing middle ring and a bearing inner ring with gear teeth, which are sequentially arranged from outside to inside, wherein the bearing inner ring is meshed with driving teeth; the bearing inner ring is detachably connected with the bearing middle ring;
the bearing inner ring is connected with the bearing middle ring through a connecting bolt, a plurality of threaded holes are uniformly formed in the inner circumferential direction of the bearing middle ring, and a plurality of through holes matched with the connecting bolt are formed in the bearing inner ring;
or the two sides of the gear teeth of the bearing inner ring are arranged in a reserved edge mode; two rows of connecting bolts are arranged along the diameter direction of the bearing inner ring; the connecting bolts are arranged on two sides of the gear teeth of the bearing inner ring; the connecting bolt of the bearing inner ring removes the rotatable bearing inner ring;
the bearing inner ring is of an integral structure or comprises a plurality of sections which can be spliced, grooves or protrusions matched with the grooves are arranged at the end parts of the sections, and the sections are spliced into the bearing inner ring.
2. The yaw and pitch bearing structure according to claim 1, wherein a washer is arranged at the connecting bolt of the bearing inner ring, the washer is a U-shaped washer, and the washer is adapted to an inner ring arc of the bearing inner ring.
3. A method for facilitating maintenance of a yaw and pitch bearing structure is characterized in that the yaw and pitch bearing structure according to any one of claims 1-2 is adopted, aiming at the pitch bearing structure with serious abrasion of an initial meshing part, a bearing inner ring is removed, the bearing inner ring is rotated, a tooth surface with serious abrasion is rotated to a non-meshing area, and the bearing inner ring is fastened again; aiming at a yaw bearing structure, a bearing inner ring gear is seriously abraded, and the bearing inner ring with gear teeth is directly replaced.
4. A yaw and pitch bearing structure is characterized by comprising a bearing inner ring, a bearing middle ring and a bearing outer ring with gear teeth, which are sequentially arranged from inside to outside, wherein the bearing outer ring is meshed with driving teeth;
the bearing outer ring is connected with the bearing middle ring through a connecting bolt, a plurality of threaded holes are uniformly formed in the inner circumference direction of the bearing middle ring, and a plurality of through holes matched with the connecting bolt are formed in the bearing outer ring;
or two rows of connecting bolts are arranged along the diameter direction of the bearing outer ring; the connecting bolt of the bearing outer ring is used for dismounting the rotatable bearing outer ring;
the bearing outer ring is of an integral structure or comprises a plurality of sections which can be spliced; the end parts of the segments are provided with grooves or convex parts matched with the grooves, and the segments are assembled into the bearing outer ring.
5. The yaw and pitch bearing structure according to claim 4, wherein a washer is arranged at the connecting bolt of the bearing outer ring, the washer is a U-shaped washer, and the washer is adapted to an outer ring arc of the bearing outer ring.
6. A method for facilitating maintenance of a yaw and pitch bearing structure is characterized in that the yaw and pitch bearing structure according to any one of claims 4-5 is adopted, a bearing outer ring is disassembled aiming at the pitch bearing structure with serious abrasion of an initial meshing part, the bearing outer ring is rotated, a tooth surface with serious abrasion is rotated to a non-meshing area, and the bearing outer ring is fastened again; aiming at the yaw bearing structure, the gear of the bearing outer ring is seriously abraded, and the bearing outer ring with gear teeth is directly replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911639.3A CN109058300B (en) | 2018-08-10 | 2018-08-10 | Yaw and pitch bearing structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911639.3A CN109058300B (en) | 2018-08-10 | 2018-08-10 | Yaw and pitch bearing structure and method |
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| Publication Number | Publication Date |
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| CN109058300A CN109058300A (en) | 2018-12-21 |
| CN109058300B true CN109058300B (en) | 2021-02-05 |
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| CN201810911639.3A Active CN109058300B (en) | 2018-08-10 | 2018-08-10 | Yaw and pitch bearing structure and method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109826865A (en) * | 2019-01-09 | 2019-05-31 | 烟台天成机械有限公司 | A kind of wind power generating set raceway maintenance grease maintenance-free method |
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| Publication number | Publication date |
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| CN109058300A (en) | 2018-12-21 |
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