CN116557416A - Bearing of wind generating set - Google Patents

Bearing of wind generating set Download PDF

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Publication number
CN116557416A
CN116557416A CN202310785722.1A CN202310785722A CN116557416A CN 116557416 A CN116557416 A CN 116557416A CN 202310785722 A CN202310785722 A CN 202310785722A CN 116557416 A CN116557416 A CN 116557416A
Authority
CN
China
Prior art keywords
bearing
hollow rolling
rolling bodies
hollow
bodies
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310785722.1A
Other languages
Chinese (zh)
Inventor
栗文彬
于东东
赵嘉成
王鹏雁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yantai Tiancheng Machinery Co ltd
Original Assignee
Yantai Tiancheng Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yantai Tiancheng Machinery Co ltd filed Critical Yantai Tiancheng Machinery Co ltd
Priority to CN202310785722.1A priority Critical patent/CN116557416A/en
Publication of CN116557416A publication Critical patent/CN116557416A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/361—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with cylindrical rollers
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
    • F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • 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
    • F16C33/34—Rollers; Needles
    • 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
    • F16C33/34—Rollers; Needles
    • F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
    • F16C33/366—Tapered rollers, i.e. rollers generally shaped as truncated cones
    • 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
    • F16C33/583—Details of specific parts of races
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/664—Retaining the liquid in or near the bearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to a wind generating set bearing which comprises an inner ring, an outer ring, a retainer and hollow rolling bodies, wherein the inner ring is positioned in the outer ring, the retainer is arranged between the inner ring and the outer ring, a plurality of pockets are formed in the retainer along the circumferential direction, the hollow rolling bodies are rotatably arranged in the pockets, and lubricant is filled in the hollow rolling bodies. The hollow rolling body structure reduces the overall weight of the bearing, increases the heat dissipation area of the bearing, reduces the temperature rise of the bearing in the running process, prolongs the service life of the bearing and reduces the maintenance cost of the bearing; the hollow rolling body stores a large amount of lubricating grease, and continuously flows in the running process of the bearing, so that the lubricity of the bearing is improved, heat generated by friction is taken away, the temperature rise of the bearing is further reduced, pitting and adhesion of the surface of the bearing are avoided, the surface precision loss between the rolling body and the roller path is reduced, and the service life of the bearing is further prolonged.

Description

Bearing of wind generating set
Technical Field
The invention relates to the technical field of wind power generation, in particular to a wind generating set bearing.
Background
The bearing types used by the main bearing and the pitch bearing of the wind generating set mainly comprise tapered roller bearings, self-aligning roller bearings, three rows of roller bearings and the like. At present, most types of bearings use solid rolling bodies, and although the retainer of the bearings is made of various materials, the retainer made of metal materials such as copper and steel is adopted for the bearings at positions which bear large load and are easy to wear in the wind turbine generator. The metal retainer has high strength and good wear resistance, but has large weight, and the weight of the whole bearing can be further increased after the metal retainer is matched with the solid rolling bodies, so that the load of the bearing in the transportation and installation processes can be increased, and the loss of the bearing in the running process is increased.
In addition, after the bearing is assembled, due to the existence of the rolling bodies and the retainer, the residual clearance in the roller path is small, a certain amount of lubricating oil is required to be ensured for lubrication during normal operation of the bearing, and the use of the solid rolling bodies can lead to a small amount of lubricating oil storage of the bearing, so that a great amount of resources are required to be spent for lubrication maintenance of the bearing during a period of operation, and the operation maintenance cost of the bearing is high. Meanwhile, the storage amount of the bearing lubricating oil using the solid rolling bodies is relatively small, so that after a period of working, the total amount of the lubricating oil has certain loss, further friction in the bearing is aggravated, abrasion and fragments are easy to occur, the bearing raceway is seriously damaged, and the service life of the bearing is further influenced.
Disclosure of Invention
The invention provides a bearing of a wind generating set aiming at the technical problems in the prior art.
The technical scheme for solving the technical problems is as follows: the utility model provides a wind generating set bearing, includes inner circle, outer lane, holder and hollow rolling element, the inner circle is located in the outer lane, be equipped with between inner circle and the outer lane the holder, the holder is equipped with a plurality of pockets along circumference, hollow rolling element rotates to set up in the pocket, hollow rolling element intussuseption is filled with the lubricant.
The beneficial effects of the invention are as follows: the hollow rolling body structure reduces the overall weight of the bearing, increases the heat dissipation area of the bearing, reduces the temperature rise of the bearing in the running process, prolongs the service life of the bearing and reduces the maintenance cost of the bearing; the hollow rolling body stores a large amount of lubricating grease, continuously flows in the running process of the bearing, improves the lubricity of the bearing, takes away heat generated by friction, further reduces the temperature rise of the bearing, avoids pitting and adhesion of the surface of the bearing, reduces the surface precision loss between the rolling body and a roller path, further improves the service life of the bearing, simultaneously has good buffering and shock absorbing effects, reduces the impact of the bearing, and ensures the normal use of the bearing.
On the basis of the technical scheme, the invention can also make the following improvements for the technical scheme in order to achieve the convenience of use and the stability of equipment:
further, an oil hole is formed in the radial direction of the hollow rolling body, and the oil hole is communicated with the middle through hole.
The technical scheme has the beneficial effects that the lubricant stored in the middle through hole conveniently flows out through the oil hole, the fluidity of the lubricant is improved, the lubricity of the bearing is further improved, the bearing abrasion is reduced, and the service life of the bearing is prolonged.
Further, the hollow rolling body is provided with a hardening layer, and the thickness of the hardening layer is as follows: 1mm-30mm.
The technical scheme has the advantages that the quenching layer with the corresponding thickness is selected according to the size and the use condition of the hollow rolling body, the wear resistance of the hollow rolling body is improved, the friction coefficient of the hollow rolling body is reduced, and the service life of the bearing is prolonged.
Further, the hardness of the hollow rolling body is more than or equal to 30HRC.
The technical scheme has the beneficial effects that the hardness of the hollow rolling body is ensured, the wear resistance of the hollow rolling body is improved, and the service life of the bearing is further prolonged.
Further, the hollow rolling bodies are formed by processing hollow steel pipes.
The adoption of the technical scheme has the advantages that the integral hardness of the hollow rolling body can be ensured, the materials are convenient to obtain, the processing is simple, and the use cost of the bearing is reduced.
Further, the hollow rolling bodies are conical hollow rolling bodies.
Further, the hollow rolling bodies are cambered surface hollow rolling bodies.
Further, the hollow rolling bodies are cylindrical hollow rolling bodies.
The technical scheme has the beneficial effects that the use requirements of different types of bearings are met, the use range is improved, and the use cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view of a conical hollow rolling element according to example 1 of the present invention;
FIG. 3 is a schematic diagram of embodiment 2 of the present invention;
FIG. 4 is a cross-sectional view of a cambered surface hollow rolling body in embodiment 2 of the invention;
FIG. 5 is a schematic structural diagram of embodiment 3 of the present invention;
fig. 6 is a cross-sectional view of a cylindrical hollow rolling element in embodiment 3 of the present invention.
Reference numerals: 1. a retainer; 2. conical hollow rolling bodies; 3. an inner ring; 4. an outer ring; 5. quenching the hard layer; 6. cambered surface hollow rolling bodies; 7. cylindrical hollow rolling bodies; 8. and an oil hole.
Detailed Description
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or component to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
As shown in fig. 1 and 2, the invention discloses a wind generating set bearing, which comprises an inner ring 3, an outer ring 4, a retainer 1 and hollow rolling bodies, wherein the inner ring 3 is positioned in the outer ring 4, a plurality of pockets are formed between the inner ring 3 and the outer ring 4 along the circumferential direction of the retainer 1, the hollow rolling bodies are rotatably arranged in the pockets, roller paths for the hollow rolling bodies to roll are formed on the inner ring 3 and the outer ring 4, lubricant is filled in middle through holes of the hollow rolling bodies, and is lubricating oil or lubricating grease, so that the storage capacity of the lubricant is increased, the lubricating effect is improved, and the maintenance cost is reduced.
The radial direction of the hollow rolling body is provided with an oil hole 8, and the oil hole 8 is communicated with the middle through hole. The lubricating oil or the lubricating circumference in the middle through hole flows out through the oil hole 8, so that the lubricating effect between the hollow rolling bodies and the retainer 1 is improved, the abrasion of the hollow rolling bodies is reduced, and the service life of the bearing is prolonged.
Further, the oil holes 8 may be provided in plural, and the plurality of oil holes 8 are uniformly provided along the circumference of the hollow rolling body, so as to ensure the uniformity of oil discharge and further improve the lubrication effect on the bearing.
The hollow rolling body is provided with a hardening layer 5, and the thickness of the hardening layer 5 is as follows: 1mm-30mm. The hardening layer 5 with corresponding thickness is selected according to the size and the use condition of the hollow rolling bodies, so that the use requirements of the hollow rolling bodies with different sizes are met, and the use range is increased.
The hardness of the hollow rolling body is more than or equal to 30HRC. The hollow rolling body is ensured to have enough hardness, the abrasion is reduced, and the service life of the bearing is prolonged.
The hollow rolling body is formed by processing a hollow steel pipe. The hollow rolling body is manufactured by rough turning, finish turning, grinding, flaw detection and other processes, so that the manufacturing cost is reduced, and the service life of the hollow rolling body is ensured.
In this embodiment, the hollow rolling element is a conical hollow rolling element 2, and the bearing is a conical roller bearing, which has the advantages of compact structure, strong bearing capacity, separable inner and outer rings, and the like.
Example 2
As shown in fig. 3 and 4, the type of hollow rolling element is different from that of embodiment 1.
In this embodiment, the hollow rolling bodies are cambered surface hollow rolling bodies 6, the bearings are self-aligning roller bearings, and the cambered surface hollow rolling bodies 6 are provided with two rows, have higher radial load, and are suitable for working under heavy load or vibration load.
Example 3
As shown in fig. 5 and 6, the difference from embodiment 1 is the kind of hollow rolling element
In this embodiment, the hollow rolling bodies are cylindrical hollow rolling bodies 7, and the bearing is a three-row roller bearing, so that the load capacity is high, and the hollow rolling bodies are suitable for places bearing radial loads.
Tapered roller bearings, self-aligning roller bearings and three rows of roller bearings are often used as main bearings of the wind generating set, so that the normal operation of the wind generating set is ensured.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (8)

1. The utility model provides a wind generating set bearing, its characterized in that includes inner circle (3), outer lane (4), holder (1) and hollow rolling element, inner circle (3) are located in outer lane (4), be equipped with between inner circle (3) and outer lane (4) holder (1), holder (1) are equipped with a plurality of pockets along the circumference, hollow rolling element rotates and sets up in the pocket, the middle through-hole intussuseption of hollow rolling element is filled with the lubricant.
2. Wind turbine generator system bearing according to claim 1, characterized in that the hollow rolling bodies are provided with oil holes (8) in radial direction, which oil holes (8) communicate with the intermediate through holes.
3. Wind turbine generator system bearing according to claim 1 or 2, characterized in that the hollow rolling bodies are provided with a hardening layer (5), the thickness of the hardening layer (5) is: 1mm-30mm.
4. Wind turbine generator system according to claim 1 or 2, wherein the hardness of the hollow rolling bodies is not less than 30HRC.
5. Wind turbine bearing according to claim 1 or 2, wherein the hollow rolling bodies are machined from hollow steel tubes.
6. Wind park bearing according to claim 1 or 2, wherein the hollow rolling bodies are conical hollow rolling bodies (2).
7. Wind park bearing according to claim 1 or 2, wherein the hollow rolling bodies are cambered hollow rolling bodies (6).
8. Wind park bearing according to claim 1 or 2, wherein the hollow rolling bodies are cylindrical hollow rolling bodies (7).
CN202310785722.1A 2023-06-29 2023-06-29 Bearing of wind generating set Pending CN116557416A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310785722.1A CN116557416A (en) 2023-06-29 2023-06-29 Bearing of wind generating set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310785722.1A CN116557416A (en) 2023-06-29 2023-06-29 Bearing of wind generating set

Publications (1)

Publication Number Publication Date
CN116557416A true CN116557416A (en) 2023-08-08

Family

ID=87503730

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310785722.1A Pending CN116557416A (en) 2023-06-29 2023-06-29 Bearing of wind generating set

Country Status (1)

Country Link
CN (1) CN116557416A (en)

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