CN201896862U - Double-column double-row ball-type pivoting support used for wind driven generator yawing - Google Patents

Double-column double-row ball-type pivoting support used for wind driven generator yawing Download PDF

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Publication number
CN201896862U
CN201896862U CN2010206559543U CN201020655954U CN201896862U CN 201896862 U CN201896862 U CN 201896862U CN 2010206559543 U CN2010206559543 U CN 2010206559543U CN 201020655954 U CN201020655954 U CN 201020655954U CN 201896862 U CN201896862 U CN 201896862U
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China
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circle
ring
raceway
semi
outer ring
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Expired - Lifetime
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CN2010206559543U
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Chinese (zh)
Inventor
唐运军
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Suote Transmission Equipment Co Ltd
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Suote Transmission Equipment Co Ltd
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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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • 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

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  • Rolling Contact Bearings (AREA)

Abstract

The utility model discloses a double-column double-row ball-type pivoting support used for wind driven generator yawing, which comprises an outer ring, steel balls, isolation blocks, an inner ring, a middle ring and a sealing ring, wherein eccentric semicircular upper and lower outer roller paths are symmetrically arranged up and down at intervals on the inner ring surface of the outer ring, eccentric semicircular upper and lower inner roller paths are symmetrically arranged up and down at intervals on the outer ring surface of the inner ring, eccentric semicircular upper and lower sub outer roller paths and upper and lower sub inner roller paths are respectively arranged up and down at intervals on the inner ring surface and the outer ring surface of the middle ring, a first complete column of upper and lower steel ball roller paths and a second complete column of upper and lower steel ball roller paths are respectively correspondingly formed between the eccentric semicircular upper and lower outer roller paths and the eccentric semicircular upper and lower sub inner roller paths and between the eccentric semicircular upper and lower sub outer roller paths and the eccentric semicircular upper and lower inner roller paths, the steel balls and the isolation blocks are assembled in the first column of roller paths and the second column of roller paths so as to make the outer ring, the middle ring and the inner ring rotate relatively. The pivoting support disclosed by the utility model bears two columns and two rows of steel balls simultaneously, and meets the higher requirements of compact structure and large bearing capacity of the current large-size wind driven generator on the pivoting support.

Description

A kind of wind driven generator yaw double ball-type slewing bearing of biserial
Technical field
The utility model relates to a kind of accessory of wind-driven generator, is specifically related to a kind of pivoting support that is used for wind-driven generator.
Background technique
China utility model patent CN201202733Y discloses a kind of single-row double ball-type slewing bearing, comprise outer ring, inner ring and steel ball and spacing block, the outer ring is a ring part, up and down symmetry is offered radius at interval all greater than raceway under raceway on the eccentric semi-circle of steel ball radius and the eccentric semi-circle on the inner ring surface of outer ring, up and down symmetry is offered radius at interval all greater than outer raceway under outer raceway and the eccentric semi-circle on the eccentric semi-circle of steel ball radius on the outer ring surface of inner ring, the double ball-type slewing bearing of raceway cooperation formation of outer ring and inner ring.This structure can make engineering machinery especially the pivoting support of truck crane possess enough axial forces, radial force and tilting moment, increase substantially bearing capacity, be easy to install and pull down, the safe and reliable life-span is long.Wind driven generator yaw is generally this type of single-row double ball-type slewing bearing with pivoting support at present, but exploitation along with 5MW, 10MW and above large-scale wind driven generator, it can not meet the demands gradually, though or meet the demands bulky, thereby cause the blower fan manufacture cost sharply to increase.Therefore need a kind of structure more compact in a hurry, the requirement of wind driven generator yaw is satisfied in the novel rotation supporting that bearing capacity is bigger.
In addition, development along with large-scale road traveling engineering truck, development as 1000t and above All-terrain truck crane, 70m and above concrete mixer etc., because Motor Vehicle has strict height tolerance system at road traveling, so pivoting support size and bearing capacity are proposed harsh requirement, also press for the pivoting support that a kind of structure is quite compact, bearing capacity is bigger and occur.
Summary of the invention
The utility model purpose provides a kind of wind driven generator yaw double ball-type slewing bearing of biserial, by the improvement of structure, satisfy present large-scale wind driven generator, large-scale road traveling engineering truck etc. to pivoting support compact structure, requirements at the higher level that bearing capacity is big.
For achieving the above object, the technical solution adopted in the utility model is: a kind of wind driven generator yaw double ball-type slewing bearing of biserial, comprise the outer ring, steel ball, spacing block and inner ring, the symmetrical up and down radius of offering at interval is all greater than outer raceway under outer raceway and the eccentric semi-circle on the eccentric semi-circle of steel ball radius on the inner ring surface of described outer ring, symmetry is offered radius at interval all greater than the down interior raceway of interior raceway and eccentric semi-circle on the eccentric semi-circle of steel ball radius about on the outer ring surface of described inner ring, also comprise centre circle and seal ring, equipped described centre circle and make the equal correspondence in last plane and bottom plane of described centre circle be positioned at the last plane of described outer ring and the top of bottom plane in the interior annular distance of described outer ring, the last plane that is equipped with described inner ring in the interior annular distance of described centre circle and makes described inner ring and the equal correspondence in bottom plane are positioned at the below of the last plane of described centre circle and bottom plane and corresponding with the bottom plane concordant with the last plane of described outer ring; Symmetrical up and down eccentric semi-circle outer raceway last time and eccentric semi-circle outer raceway next time of offering radius greater than the steel ball radius at interval on the inner ring surface of described centre circle, separate between the upper and lower on the outer ring surface of described centre circle and establish radius greater than the eccentric semi-circle of steel ball radius raceway and eccentric semi-circle raceway in next time in last time, the spacing between the outer up and down raceway of described eccentric semi-circle, described eccentric semi-circle up and down on the spacing, described eccentric semi-circle between the raceway on the spacing between the next time outer raceway and the described eccentric semi-circle in next time the spacing between the raceway equal; Described eccentric semi-circle is all identical and corresponding respectively upper and lower raceway of complete steel ball first row that forms of semi-circle radius surface of raceway in next time on semi-circle radius surface and the described eccentric semi-circle of outer raceway up and down; The all identical and complete upper and lower raceway of steel ball secondary series of corresponding respectively formation of the semi-circle radius surface of the interior up and down raceway of the semi-circle radius surface of next outer raceway and described eccentric semi-circle on the described eccentric semi-circle; Described steel ball and spacing block are assemblied in first and second row raceway, make between described outer ring, described centre circle and the described inner ring to relatively rotate.
During work, the inner ring of pivoting support is connected with the chassis portion of engineering machinery is corresponding with rotating part respectively with the outer ring, can bear huge axial force, radial force and tilting moment, can antifatigue carry, under the limited condition of the supporting installing space of engineering machinery, can increase substantially the bearing capacity of pivoting support, and be easy to installation and removal, safe and reliable, the life-span is long.
In the technique scheme, described seal ring is covered in the fit up gap between described outer ring and described centre circle, described centre circle and the described inner ring, prevents that rainwater, dust etc. from entering pivoting support, reduces the working life of pivoting support.Described seal ring comprises the outer seal ring of going up, outer lower seal, the interior seal ring of going up, interior lower seal, the described outer position, top that seal ring is positioned at plane on the described outer ring of going up, in the upper outer ring groove of offering on the outer ring surface of described centre circle, described outer lower seal is positioned at the lower portion of described centre circle bottom plane, in the lower outer ring groove of offering on the inner ring surface of described outer ring, go up the position, top that seal ring is positioned at plane on the described inner ring in described, in the inner upper ring groove of offering on the inner ring surface of described centre circle, described interior lower seal is positioned at the lower portion of described centre circle bottom plane, in the inner lower ring groove of offering on the outer ring surface of described inner ring.
In the technique scheme, the excircle of described outer ring can have gear ring also can not have gear ring.
In the technique scheme, the inner circumference of described inner ring can have gear ring also can not have gear ring.
Because the technique scheme utilization, the advantage that the utility model compared with prior art has is:
Owing to the utlity model has the double steel ball of biserial, compare the pressure that the many row steel ball carryings of single-row double ball-type slewing bearing give from engineering machinery, the stack of a plurality of steel ball bearing capacitys constitutes the bearing capacity of whole pivoting support, so the bearing capacity of the double ball-type slewing bearing of biserial is bigger.Simultaneously, under the equal bearing capacity situation, average pressure to each steel ball of the double ball-type slewing bearing of biserial is less than the pressure on single-row each steel ball of double ball-type slewing bearing, so can be with the volume design of the steel ball volume of the double ball-type slewing bearing of biserial even whole pivoting support littler, the circumferencial direction size can reduce more than 30%, and the short transverse size can reduce more than 20%.
The utility model is particularly suited for using as powerful wind driven generator yaw pivoting support.
Description of drawings
Fig. 1 is the utility model embodiment one a general structure schematic representation.
Fig. 2 is the outer ring raceway schematic representation among the embodiment one.
Fig. 3 is the centre circle raceway schematic representation among the embodiment one.
Fig. 4 is the inner ring raceway schematic representation among the embodiment one.
Wherein: 1, outer ring; 2, steel ball; 3, go up seal ring outward; 4, centre circle; 5, spacing block; 6, inner ring; 7, outer lower seal; 8, the interior seal ring of going up; 9, interior lower seal.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: referring to shown in Figure 1, a kind of wind driven generator yaw double ball-type slewing bearing of biserial, comprise outer ring 1, steel ball 2, spacing block 5, inner ring 6, centre circle 4, the outer seal ring 3 of going up, outer lower seal 7, interior seal ring 8 and the interior lower seal 9 of going up, the excircle of described outer ring 1 can have external toothing, equipped described centre circle 4 and make the equal correspondence in last plane and bottom plane of described centre circle 4 be positioned at the last plane of described outer ring 1 and the top of bottom plane in the interior annular distance of described outer ring 1, the last plane that is equipped with described inner ring 6 in the interior annular distance of described centre circle 4 and makes described inner ring 6 and the equal correspondence in bottom plane are positioned at the below of the last plane of described centre circle 4 and bottom plane and corresponding with the bottom plane concordant with the last plane of described outer ring 1.The symmetrical up and down radius of offering at interval is all greater than outer raceway under outer raceway and the eccentric semi-circle on the eccentric semi-circle of steel ball 2 radiuses on the inner ring surface of described outer ring 1, symmetry is offered radius at interval all greater than the down interior raceway of interior raceway and eccentric semi-circle on the eccentric semi-circle of steel ball 2 radiuses about on the outer ring surface of described inner ring 6, symmetrical up and down eccentric semi-circle outer raceway last time and eccentric semi-circle outer raceway next time of offering radius greater than steel ball 2 radiuses at interval on the inner ring surface of described centre circle 4, separate between the upper and lower on the outer ring surface of described centre circle 4 and establish radius greater than the eccentric semi-circle of steel ball 2 radiuses raceway and eccentric semi-circle raceway in next time in last time, the spacing between the outer up and down raceway of described eccentric semi-circle, spacing between the interior up and down raceway of described eccentric semi-circle, spacing on spacing on the described eccentric semi-circle between the next outer raceway and the described eccentric semi-circle between the next interior raceway equates.Described eccentric semi-circle is all identical and corresponding respectively upper and lower raceway of complete steel ball first row that forms of semi-circle radius surface of raceway in next time on semi-circle radius surface and the described eccentric semi-circle of outer raceway up and down; The all identical and complete upper and lower raceway of steel ball secondary series of corresponding respectively formation of the semi-circle radius surface of the interior up and down raceway of the semi-circle radius surface of next outer raceway and described eccentric semi-circle on the described eccentric semi-circle; Described steel ball 2 and spacing block 5 are assemblied in first and second row raceway, and described outer ring 1, described centre circle 4, described inner ring 6 can be rotated relatively.The described outer position, top that seal ring 3 is positioned at plane on the described outer ring 1 of going up, in the upper outer ring groove of offering on the outer ring surface of described centre circle 4, described outer lower seal 7 is positioned at the lower portion of described centre circle 4 bottom planes, in the lower outer ring groove of offering on the inner ring surface of described outer ring 1, go up the position, top that seal ring 8 is positioned at plane on the described inner ring 6 in described, in the inner upper ring groove of offering on the inner ring surface of described centre circle 4, lower seal 9 is positioned at the lower portion of described centre circle 4 bottom planes in described, in the inner lower ring groove of offering on the outer ring surface of described inner ring 6, to prevent rainwater, dusts etc. enter raceway.During work, the inner ring 6 of pivoting support is connected with the chassis portion of engineering machinery is corresponding with rotating part respectively with outer ring 1, can bear huge axial force, radial force and tilting moment, can antifatigue carry, under the limited condition of the supporting installing space of engineering machinery, can increase substantially the bearing capacity of pivoting support, and be easy to installation and removal, safe and reliable, the life-span is long.
Fig. 2 ~ 4 illustrate the raceway schematic representation on described outer ring 1, described centre circle 4 and the described inner ring 6 respectively, and the spacing on spacing on the spacing between the spacing between the outer up and down raceway of the eccentric semi-circle on the described outer ring 1, the interior up and down raceway of the eccentric semi-circle on the described inner ring 6, the eccentric semi-circle on the described centre circle 4 between the next outer raceway and the eccentric semi-circle on the described centre circle 4 between the next interior raceway equates.Eccentric semi-circle on the described outer ring 1 up and down on the semi-circle radius surface, the eccentric semi-circle on the described centre circle 4 of outer raceway in next time on the semi-circle radius surface of raceway, the eccentric semi-circle on the described centre circle 4 next time outer raceway the semi-circle radius surface and the semi-circle radius surface of the interior up and down raceway of the eccentric semi-circle on the described inner ring 6 all identical.

Claims (4)

1. a wind driven generator yaw is with the double ball-type slewing bearing of biserial, comprise outer ring (1), steel ball (2), spacing block (5) and inner ring (6), the symmetrical up and down radius of offering at interval is all greater than outer raceway under outer raceway and the eccentric semi-circle on the eccentric semi-circle of steel ball (2) radius on the inner ring surface of described outer ring (1), symmetry is offered radius at interval all greater than the down interior raceway of interior raceway and eccentric semi-circle on the eccentric semi-circle of steel ball (2) radius about on the outer ring surface of described inner ring (6), it is characterized in that:
A, also comprise centre circle (4), equipped described centre circle (4) and make the equal correspondence in last plane and bottom plane of described centre circle (4) be positioned at the last plane of described outer ring (1) and the top of bottom plane in the interior annular distance of described outer ring (1), the last plane that is equipped with described inner ring (6) in the interior annular distance of described centre circle (4) and makes described inner ring (6) and the equal correspondence in bottom plane are positioned at the below of the last plane of described centre circle (4) and bottom plane and corresponding with the bottom plane concordant with the last plane of described outer ring (1);
B, symmetrical up and down eccentric semi-circle outer raceway last time and eccentric semi-circle outer raceway next time of offering radius greater than steel ball (2) radius at interval on the inner ring surface of described centre circle (4), separate between the upper and lower on the outer ring surface of described centre circle (4) and establish eccentric semi-circle last time interior raceway and the eccentric semi-circle next time interior raceway of radius greater than steel ball (2) radius, spacing between the outer up and down raceway of described eccentric semi-circle, spacing between the interior up and down raceway of described eccentric semi-circle, spacing on spacing on the described eccentric semi-circle between the next outer raceway and the described eccentric semi-circle between the next interior raceway equates, described eccentric semi-circle up and down on semi-circle radius surface and the described eccentric semi-circle of outer raceway in next time the semi-circle radius surface of raceway all identical and correspondingly respectively form complete steel ball first and list, following raceway, on the steel ball secondary series that the semi-circle radius surface of the interior up and down raceway of the semi-circle radius surface of next outer raceway and described eccentric semi-circle is all identical and the corresponding formation of difference is complete on the described eccentric semi-circle, following raceway, described steel ball and spacing block are assemblied in first, in the two row raceways;
Be respectively equipped with seal ring in the fit up gap of c, described outer ring (1) and described centre circle (4), described centre circle (4) and described inner ring (6).
2. the wind driven generator yaw according to claim 1 double ball-type slewing bearing of biserial, it is characterized in that: described seal ring comprises the outer seal ring (3) of going up, outer lower seal (7), the interior seal ring (8) of going up, interior lower seal (9), the described outer seal ring (3) of going up is positioned at the position, top that the plane is gone up in described outer ring (1), in the upper outer ring groove of offering on the outer ring surface of described centre circle (4), described outer lower seal (7) is positioned at the lower portion of described centre circle (4) bottom plane, in the lower outer ring groove of offering on the inner ring surface of described outer ring (1), go up seal ring (8) in described and be positioned at the position, top that described inner ring (6) is gone up the plane, in the inner upper ring groove of offering on the inner ring surface of described centre circle (4), described interior lower seal (9) is positioned at the lower portion of described centre circle (4) bottom plane, in the inner lower ring groove of offering on the outer ring surface of described inner ring (6).
3. the wind driven generator yaw according to claim 1 and 2 double ball-type slewing bearing of biserial, it is characterized in that: the excircle of described outer ring (1) has external toothing.
4. the wind driven generator yaw according to claim 1 and 2 double ball-type slewing bearing of biserial, it is characterized in that: the inner circumference of described inner ring (6) has ring gear.
CN2010206559543U 2010-12-13 2010-12-13 Double-column double-row ball-type pivoting support used for wind driven generator yawing Expired - Lifetime CN201896862U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206559543U CN201896862U (en) 2010-12-13 2010-12-13 Double-column double-row ball-type pivoting support used for wind driven generator yawing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206559543U CN201896862U (en) 2010-12-13 2010-12-13 Double-column double-row ball-type pivoting support used for wind driven generator yawing

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CX01 Expiry of patent term

Granted publication date: 20110713

CX01 Expiry of patent term