CN102220939B - Braking device of wind power generation yaw bearing - Google Patents
Braking device of wind power generation yaw bearing Download PDFInfo
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- CN102220939B CN102220939B CN2011101415022A CN201110141502A CN102220939B CN 102220939 B CN102220939 B CN 102220939B CN 2011101415022 A CN2011101415022 A CN 2011101415022A CN 201110141502 A CN201110141502 A CN 201110141502A CN 102220939 B CN102220939 B CN 102220939B
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Abstract
The invention relates to a braking device of a wind power generation yaw bearing; a yaw rotary bearing consists of an outer bearing ring and an inner bearing ring; the inner side surface of the lower part of the outer bearing ring is provided with an annular concave bearing braking surface; the lower end surface of the inner bearing ring is provided with more than one fan-shaped brake; two end surfaces of a fan-shaped brake surface part of a brake support are contacted and connected with the left contacting surface and/or the right contacting surface of a brake fan-shaped groove; and a brake lining pad is provided with a fan-shaped convex lining pad braking surface matched with the bearing brake surface. When in braking, damping moment force generates when the lining pad brake surface of the brake lining pad is contacted with the bearing brake surface, and the tangential force generated in the braking process acts on the left contact surface and/or the right contact surface where the brake support is connected with a brake base, so that braking abrasion of the brake lining pad is reduced. In the invention, a plurality of fan-shaped brakes arranged symmetrically are adopted for applying damping moment force on the bearing brake surface so that yaw braking of a wind power generation set can be realized.
Description
Technical field
The present invention relates to a kind of braking device of wind-power generating yaw bearing.
Background technique
In order to guarantee the wind-driven generator stable operation, must there be a device tracking wind direction to change, make the wind wheel box haul change automatic corresponding rotation, keep wind wheel vertical all the time with wind direction, this device is exactly yaw system.Yaw system is generally formed the active yaw system of the many employings of high-power horizontal axis wind-driven generator group by driftage bearing, deviation drive device, off-course brake etc.Because deviation drive device is the gear ring that comes driving machine bilge portion by cylindrical gears, wanting to avoid the cabin box haul to change deflects, can be because blade be subjected to the passive situation that departs from wind direction of wind load when particularly stopping to go off course, wind power generating set should be equipped with off-course brake.What off-course brake adopted usually all is disk type braker; this break is given precompression of chip brake disc under the effect of hydraulic system; drive its two brake shoes and clamp the disc type brake disc; make driftage keep stable to the unit of wind process, this break also can play the effect of driftage braking when compressor emergency shutdown.
The defective of this driftage braking device mainly contains: 1. the accuracy of manufacturing of brake disc requires than higher, and namely with respect to support, planeness, parallelism, the roughness of brake disc processing require all than higher; 2. retain lubricant oil on the driftage brake disk surface easily, cause friction factor to reduce, need often clear up; 3. brake structural more complicated, cost is higher, and the layout of break is subjected to the constraint of engine room structure; 4. the brake disc diameter is big and relative thickness is little, may deform during braking, causes unnecessary additional brake moment easily; 5. to compensate at any time during brake-pad wear, otherwise can cause damping torque not enough, may make the whole yaw system can't proper functioning under the extreme case.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, a kind of wind-power generating yaw bearing braking device is provided, simple in structure, safety and stability, easy to manufacture, easy to maintenance, the rigidity of drag friction parts is strengthened, be conducive to the vibration and the noise that reduce to produce in the braking process, can reduce the delivery pressure of hydraulic system, prolong the working life of brake shoe.
The technical solution adopted for the present invention to solve the technical problems is: scheme one: a kind of braking device of wind-power generating yaw bearing, has the driftage floating bearing, described driftage floating bearing is made of outer bearing ring and inner bearing ring, the excircle of outer bearing ring has external gear, outer bearing ring top and inner bearing ring are connected by ball, the inner side surface of outer bearing ring bottom has the bearing braking surface of hoop indent, the lower end surface of described inner bearing ring is equipped with the fan-shaped break more than 1, described fan-shaped break is by the break pedestal, brake support frame and brake shoe are formed, the break pedestal has the braking fan groove in the side towards brake shoe, the fan-shaped braking surface of brake support frame is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame are connected with the left surface of contact of braking fan groove and/or the contact of right surface of contact, the fan-shaped braking surface part of brake support frame has the pad fan groove in the side towards brake shoe, being partly embedded in the pad fan groove in the brake shoe, described brake shoe has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface, and the part in the T shape support of described brake support frame is stuck in the internal cavities of break pedestal.Described bearing braking surface is dovetail groove groove face or spherical braking surface.
Fixedly connected with the tower top flange by the tower top flange bolt in the outer bearing ring lower end, inner bearing ring is positioned at the inside of outer bearing ring, the a plurality of fan-shaped breaks of the uniform installation in the lower end surface of inner bearing ring, fixedly connected with the cabin underframe of wind-powered electricity generation unit by cabin underframe fixing bolt in the inner bearing ring upper end.
The break pedestal of fan-shaped break is fixed on the lower end surface of inner bearing ring, plural oil hydraulic cylinder promotes brake support frame and makes fore and aft motion, produce damping torque when the pad braking surface of brake shoe contacts with the bearing braking surface during braking, and the tangential force that produces in the braking process acts on the left surface of contact and/or right surface of contact that brake support frame contacts with the break pedestal, reduces the brake wear of brake shoe.
Scheme two: a kind of braking device of wind-power generating yaw bearing, has the driftage floating bearing, described driftage floating bearing is made of outer bearing ring and inner bearing ring, outer bearing ring and inner bearing ring are connected by ball, the outer circumferential face of outer bearing ring has external gear, the outer bearing ring lower end is equipped with outer brake hoop, outer brake hoop inner side surface has the bearing braking surface of hoop indent, the lower end surface of described inner bearing ring is equipped with the fan-shaped break more than 1, described fan-shaped break is by the break pedestal, brake support frame and brake shoe are formed, the break pedestal has the braking fan groove in the side towards brake shoe, the fan-shaped braking surface of brake support frame is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame are connected with the left surface of contact of braking fan groove and/or the contact of right surface of contact, the fan-shaped braking surface part of brake support frame has the pad fan groove in the side towards brake shoe, being partly embedded in the pad fan groove in the brake shoe, described brake shoe has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface, and the part in the T shape support of described brake support frame is stuck in the internal cavities of break pedestal.Described bearing braking surface is dovetail groove groove face or spherical braking surface.
Outer brake hoop can use the material different with outer bearing ring and have different roughness.
Fixedly connected with the tower top flange by the tower top flange bolt together with outer brake hoop in the outer bearing ring lower end, inner bearing ring is positioned at the inside of outer bearing ring, the a plurality of fan-shaped breaks of the uniform installation in the lower end surface of inner bearing ring, fixedly connected with the cabin underframe of wind-powered electricity generation unit by cabin underframe fixing bolt in the inner bearing ring upper end.
The break pedestal of fan-shaped break is fixed on the lower end surface of inner bearing ring, plural oil hydraulic cylinder promotes brake support frame and makes fore and aft motion, produce damping torque when the pad braking surface of brake shoe contacts with the bearing braking surface during braking, and the tangential force that produces in the braking process acts on the left surface of contact and/or right surface of contact that brake support frame contacts with the break pedestal, reduces the brake wear of brake shoe.
Scheme three: a kind of braking device of wind-power generating yaw bearing, has the driftage floating bearing, described driftage floating bearing is made of outer bearing ring and inner bearing ring, the inner circumference of inner bearing ring has internal gear, inner bearing ring top and outer bearing ring are connected by ball, the outer side surface of inner bearing ring bottom has the bearing braking surface of hoop indent, the lower end surface of described outer bearing ring is equipped with the fan-shaped break more than 1, described fan-shaped break is by the break pedestal, brake support frame and brake shoe are formed, the break pedestal has the braking fan groove in the side towards brake shoe, the fan-shaped braking surface of brake support frame is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame are connected with the left surface of contact of braking fan groove and/or the contact of right surface of contact, the fan-shaped braking surface part of brake support frame has the pad fan groove in the side towards brake shoe, being partly embedded in the pad fan groove in the brake shoe, described brake shoe has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface, and the part in the T shape support of described brake support frame is stuck in the internal cavities of break pedestal.Described bearing braking surface is dovetail groove groove face or spherical braking surface.
Fixedly connected with the tower top flange by the tower top flange bolt in the inner bearing ring lower end, a plurality of fan-shaped breaks of the uniform installation in the lower end surface of outer bearing ring, and fixedly connected with the cabin underframe of wind-powered electricity generation unit by cabin underframe fixing bolt in the outer bearing ring upper end.
The break pedestal of fan-shaped break is fixed on the lower end surface of outer bearing ring, plural oil hydraulic cylinder promotes brake support frame and makes fore and aft motion, produce damping torque when the pad braking surface of brake shoe contacts with the bearing braking surface during braking, and the tangential force that produces in the braking process acts on the left surface of contact and/or right surface of contact that brake support frame contacts with the break pedestal, reduces the brake wear of brake shoe.
Scheme four: a kind of braking device of wind-power generating yaw bearing, has the driftage floating bearing, described driftage floating bearing is made of outer bearing ring and inner bearing ring, the inner circumference of inner bearing ring has internal gear, inner bearing ring and outer bearing ring are connected by ball, the inner bearing ring lower end is equipped with the inside brake ring, inside brake ring outer side surface has the bearing braking surface of hoop indent, the lower end surface of described outer bearing ring is equipped with the fan-shaped break more than 1, described fan-shaped break is by the break pedestal, brake support frame and brake shoe are formed, the break pedestal has the braking fan groove in the side towards brake shoe, the fan-shaped braking surface of brake support frame is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame are connected with the left surface of contact of braking fan groove and/or the contact of right surface of contact, the fan-shaped braking surface part of brake support frame has the pad fan groove in the side towards brake shoe, being partly embedded in the pad fan groove in the brake shoe, described brake shoe has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface, and the part in the T shape support of described brake support frame is stuck in the internal cavities of break pedestal.Described bearing braking surface is dovetail groove groove face or spherical braking surface.
The inside brake ring can use the material different with inner bearing ring and have different roughness.
Fixedly connected with the tower top flange by the tower top flange bolt together with the inside brake ring in the inner bearing ring lower end, the a plurality of fan-shaped breaks of the uniform installation in the lower end surface of outer bearing ring, fixedly connected with the cabin underframe of wind-powered electricity generation unit by cabin underframe fixing bolt in the outer bearing ring upper end.
The break pedestal of fan-shaped break is fixed on the lower end surface of outer bearing ring, plural oil hydraulic cylinder promotes brake support frame and makes fore and aft motion, produce damping torque when the pad braking surface of brake shoe contacts with the bearing braking surface during braking, and the tangential force that produces in the braking process acts on the left surface of contact and/or right surface of contact that brake support frame contacts with the break pedestal, reduces the brake wear of brake shoe.
The invention has the beneficial effects as follows: in sum, the present invention is simple in structure, safety and stability, working life easy to manufacture, easy to maintenance, brake shoe are longer.The bearing braking surface that brake area directly uses inner bearing ring or outer bearing ring or inside brake ring or outer brake hoop to be provided with, and inner bearing ring or outer bearing ring or inside brake ring or outer brake hoop are fixedlyed connected with tower tube top flange, the rigidity of drag friction parts is strengthened, and is conducive to the vibration and the noise that reduce to produce in the braking process.Owing to adopt a plurality of equally distributed fan-shaped breaks, can reduce the delivery pressure of hydraulic system, prolong the working life of brake shoe.
The present invention adopts the fan-shaped break of a plurality of symmetric arrangement that the bearing braking surface is applied the driftage braking that damping torque realizes wind power generating set.The pad braking surface of fan-shaped break of the present invention is the fan-shaped ring braking surface, and the relative bearing machining accuracy of the machining accuracy of ring-type braking surface can satisfy the accuracy of manufacturing of brake disc; The brake shoe of fan-shaped break is flange-type, and thickness is thicker than conventional disk type braker sheet type braking plate, and brake disc rigidity is significantly improved.Braking radius of the present invention is bigger, can reduce braking force after fan-shaped break quantity increases.The layout of fan-shaped break of the present invention is not subjected to the restriction of forward engine room underframe, can arrange a plurality of breaks at inner bearing ring or outer bearing ring according to braking moment.The structure of fan-shaped break of the present invention obtains simplifying, the nonsymmetry when having eliminated braking.The bearing braking surface is dovetail groove groove face or spherical, is sagged shape, ensconces the inside, and therefore, hydraulic oil is revealed and is difficult for remaining on this braking surface, has improved the Security of braking.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is the scheme of installation of scheme one among the present invention;
Fig. 2 is the enlarged diagram at A place among Fig. 1;
Fig. 3 is the perspective view of scheme one among the present invention;
Fig. 4 is the partial schematic sectional view of scheme one among the present invention;
Fig. 5 is the partial schematic sectional view of scheme two among the present invention;
Fig. 6 is the scheme of installation of scheme three among the present invention;
Fig. 7 is the enlarged diagram at B place among Fig. 6;
Fig. 8 is the perspective view of scheme three among the present invention;
Fig. 9 is the partial schematic sectional view of scheme three among the present invention;
Figure 10 is the partial schematic sectional view of scheme four among the present invention;
Figure 11 is the sectional view of the fan-shaped break in scheme one and the scheme two among the present invention;
Figure 12 is the perspective view of the fan-shaped break in scheme one and the scheme two among the present invention;
Figure 13 is the sectional view of the fan-shaped break in scheme three and the scheme four among the present invention;
Figure 14 is the perspective view of fan-shaped break in scheme three and the scheme four among the present invention;
Wherein: 1, cabin underframe, 11, cabin underframe fixing bolt, 21, outer bearing ring, 22, inner bearing ring, 23, ball, 24, the inner ring braking surface, 25, outer ring braking surface, 26, outer brake hoop, 27, the inside brake ring, 3, fan-shaped break, 31, the break pedestal, 32, brake support frame, 33, brake shoe, 34, left surface of contact, 35, right surface of contact, 36, break fixing bolt, 4, the tower top flange, 41, the tower top flange bolt.
Embodiment
Shown in Figure 12 as Fig. 1 Fig. 2 Fig. 3 Fig. 4 Figure 11, scheme one: a kind of braking device of wind-power generating yaw bearing, has the driftage floating bearing, the driftage floating bearing is made of outer bearing ring 21 and inner bearing ring 22, the excircle of outer bearing ring 21 has external gear, outer bearing ring 21 tops and inner bearing ring 22 are connected by ball 23, the inner side surface of outer bearing ring 21 bottoms has the bearing braking surface of hoop indent, the inner ring braking surface that the bearing braking surface has for the outer bearing ring inner side surface, inner ring braking surface 24 is the dovetail groove groove face.
The lower end surface of inner bearing ring 22 is equipped with a plurality of fan-shaped breaks 3, fan-shaped break 3 is by break pedestal 31, brake support frame 32 and brake shoe 33 are formed, break pedestal 31 has the braking fan groove in the side towards brake shoe 33, the fan-shaped braking surface of brake support frame 32 is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame 32 are connected with the left surface of contact 34 of braking fan groove and/or 35 contacts of right surface of contact, the fan-shaped braking surface part of brake support frame 32 has the pad fan groove in the side towards brake shoe 33, being partly embedded in the pad fan groove in the brake shoe 33.The arc length of fan-shaped braking surface part is mated with the arc length of braking fan groove, the arc length of pad fan groove is less than the arc length of braking fan groove, simultaneously, brake shoe 33 embeds the arc length of part in the pad fan groove and the arc length coupling of pad fan groove, the arc length that brake shoe 33 embeds part in the pad fan groove is exposed at pad fan groove arc length partly outward less than brake shoe, and the brake shoe 33 outer arc length that are exposed at pad fan groove part are mated with the arc length of braking fan groove.
Have 3 bolts hole that are used for fixed sectors break 3 on the break pedestal 31, the bolt hole that break fixing bolt 36 passes on the break pedestal 31 is fixedlyed connected with inner bearing ring 22, have 2 cavitys on the break pedestal 31, cavity is communicated with by dwindling the hole with outside, the top of the T shape support of brake support frame 32 is embedded in the cavity of break pedestal 31, the top end face external diameter of T shape support is greater than the internal diameter that dwindles the hole, and the top of T shape support is connected with the oil hydraulic cylinder of outside.
Brake shoe 33 has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface.
Fixedly connected with tower top flange 4 by tower top flange bolt 41 in outer bearing ring 21 lower ends, inner bearing ring 22 is positioned at the inside of outer bearing ring 21, the a plurality of fan-shaped breaks 3 of the uniform installation in the lower end surface of inner bearing ring 22, fixedly connected with the cabin underframe 1 of wind-powered electricity generation unit by cabin underframe fixing bolt 11 in inner bearing ring 21 upper ends.
The break pedestal 31 of fan-shaped break 3 is fixed on the lower end surface of inner bearing ring 22, plural oil hydraulic cylinder promotes brake support frame 32 and makes fore and aft motion, produce damping torque when the pad braking surface of brake shoe 33 contacts with the bearing braking surface during braking, and the tangential force that produces in the braking process acts on the left surface of contact 34 and/or right surface of contact 35 that brake support frame 32 contacts with break pedestal 31, reduces the brake wear of brake shoe 33.
Shown in Figure 12 as Fig. 5 Figure 11, scheme two: a kind of braking device of wind-power generating yaw bearing, has the driftage floating bearing, the driftage floating bearing is made of outer bearing ring 21 and inner bearing ring 22, outer bearing ring 21 is connected by ball 23 with inner bearing ring 22, the outer circumferential face of outer bearing ring 21 has external gear, outer bearing ring 21 lower ends are equipped with outer brake hoop 26, outer brake hoop 26 inner side surfaces have the bearing braking surface of hoop indent, the bearing braking surface is the inner ring braking surface 24 that outer brake hoop 26 inner side surfaces have, and inner ring braking surface 24 is spherical braking surface.
The lower end surface of inner bearing ring 22 is equipped with a plurality of fan-shaped breaks 3.Fan-shaped break 3 is made up of break pedestal 31, brake support frame 32 and brake shoe 33, break pedestal 31 has the braking fan groove in the side towards brake shoe 33, the fan-shaped braking surface of brake support frame 32 is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame 32 are connected with the left surface of contact 34 of braking fan groove and/or 35 contacts of right surface of contact, the fan-shaped braking surface part of brake support frame 32 has the pad fan groove in the side towards brake shoe 33, being partly embedded in the pad fan groove in the brake shoe 33.The arc length of fan-shaped braking surface part is mated with the arc length of braking fan groove, the arc length of pad fan groove is less than the arc length of braking fan groove, simultaneously, brake shoe 33 embeds the arc length of part in the pad fan groove and the arc length coupling of pad fan groove, brake shoe 33 embeds the arc length of part in the pad fan groove less than the brake shoe 33 outer arc length that are exposed at pad fan groove part, the brake shoe 33 outer arc length of pad fan groove part and the arc length couplings of braking fan groove of being exposed at.
Have 3 bolts hole that are used for fixed sectors break 3 on the break pedestal 31, the bolt hole that break fixing bolt 36 passes on the break pedestal 31 is fixedlyed connected with inner bearing ring 22, have 2 cavitys on the break pedestal 31, cavity is communicated with by dwindling the hole with outside, the top of the T shape support of brake support frame 32 is embedded in the cavity of break pedestal 31, the top end face external diameter of T shape support is greater than the internal diameter that dwindles the hole, and the top of T shape support is connected with the oil hydraulic cylinder of outside.
Brake shoe 33 has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface.
Outer brake hoop 26 can use the material different with outer bearing ring 21 and have different roughness.
Fixedly connected with tower top flange 4 by tower top flange bolt 41 together with outer brake hoop 26 in outer bearing ring 21 lower ends, inner bearing ring 22 is positioned at the inside of outer bearing ring 21, the a plurality of fan-shaped breaks 3 of the uniform installation in the lower end surface of inner bearing ring 22, fixedly connected with the cabin underframe 1 of wind-powered electricity generation unit by cabin underframe fixing bolt 11 in inner bearing ring 22 upper ends.
The break pedestal 31 of fan-shaped break 3 is fixed on the lower end surface of inner bearing ring 22, plural oil hydraulic cylinder promotes brake support frame 32 and makes fore and aft motion, produce damping torque when the pad braking surface of brake shoe 33 contacts with the bearing braking surface during braking, and the tangential force that produces in the braking process acts on the left surface of contact 34 and/or right surface of contact 35 that brake support frame 32 contacts with break pedestal 31, reduces the brake wear of brake shoe.
Shown in Figure 14 as Fig. 6 Fig. 7 Fig. 8 Fig. 9 Figure 13, scheme three: a kind of braking device of wind-power generating yaw bearing, has the driftage floating bearing, the driftage floating bearing is made of outer bearing ring 21 and inner bearing ring 22, the inner circumference of inner bearing ring 22 has internal gear, inner bearing ring 22 tops and outer bearing ring 21 are connected by ball 23, the outer side surface of inner bearing ring 22 bottoms has the bearing braking surface of hoop indent, the bearing braking surface is the outer ring braking surface 25 that inner bearing ring 22 outer side surfaces have, and outer ring braking surface 25 is the dovetail groove groove face.
The lower end surface of outer bearing ring 21 is equipped with a plurality of fan-shaped breaks 3.Fan-shaped break 3 is made up of break pedestal 31, brake support frame 32 and brake shoe 33, break pedestal 31 has the braking fan groove in the side towards brake shoe 33, the fan-shaped braking surface of brake support frame 31 is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame 31 are connected with the left surface of contact 34 of braking fan groove and/or 35 contacts of right surface of contact, the fan-shaped braking surface part of brake support frame 32 has the pad fan groove in the side towards brake shoe 33, being partly embedded in the pad fan groove in the brake shoe 33.The arc length of fan-shaped braking surface part is mated with the arc length of braking fan groove, the arc length of pad fan groove is less than the arc length of braking fan groove, simultaneously, brake shoe 33 embeds the arc length of part in the pad fan groove and the arc length coupling of pad fan groove, brake shoe 33 embeds the arc length of part in the pad fan groove less than the brake shoe 33 outer arc length that are exposed at pad fan groove part, the brake shoe 33 outer arc length of pad fan groove part and the arc length couplings of braking fan groove of being exposed at.
Have 3 bolts hole that are used for fixed sectors break 3 on the break pedestal 31, the bolt hole that break fixing bolt 36 passes on the break pedestal 31 is fixedlyed connected with outer bearing ring 21, have 2 cavitys on the break pedestal 31, cavity is communicated with by dwindling the hole with outside, the top of the T shape support of brake support frame 32 is embedded in the cavity of break pedestal 31, the top end face external diameter of T shape support is greater than the internal diameter that dwindles the hole, and the top of T shape support is connected with the oil hydraulic cylinder of outside.
Brake shoe 33 has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface.
Fixedly connected with tower top flange 4 by tower top flange bolt 41 in inner bearing ring 22 lower ends, the a plurality of fan-shaped breaks 3 of the uniform installation in the lower end surface of outer bearing ring 21, fixedly connected with the cabin underframe 1 of wind-powered electricity generation unit by cabin underframe fixing bolt 11 in outer bearing ring 21 upper ends.
The break pedestal 31 of fan-shaped break 3 is fixed on the lower end surface of outer bearing ring 21, plural oil hydraulic cylinder promotes brake support frame 32 and makes fore and aft motion, produce damping torque when the pad braking surface of brake shoe 33 contacts with the bearing braking surface during braking, and the tangential force that produces in the braking process acts on the left surface of contact 34 and/or right surface of contact 35 that brake support frame 32 contacts with break pedestal 31, reduces the brake wear of brake shoe.
Shown in Figure 14 as Figure 10 Figure 13, scheme four: a kind of braking device of wind-power generating yaw bearing, has the driftage floating bearing, the driftage floating bearing is made of outer bearing ring 21 and inner bearing ring 22, the inner circumference of inner bearing ring 22 has internal gear, inner bearing ring 22 is connected by ball 23 with outer bearing ring 21, inner bearing ring 22 lower ends are equipped with inside brake ring 27, inside brake ring 27 outer side surfaces have the bearing braking surface of hoop indent, the bearing braking surface is the outer ring braking surface 25 that inside brake ring 27 outer side surfaces have, and outer ring braking surface 25 is spherical braking surface.
The lower end surface of outer bearing ring 21 is equipped with a plurality of fan-shaped breaks 3.Fan-shaped break 3 is made up of break pedestal 31, brake support frame 32 and brake shoe 33, break pedestal 31 has the braking fan groove in the side towards brake shoe 33, the fan-shaped braking surface of brake support frame 32 is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame 32 are connected with the left surface of contact 34 of braking fan groove and/or 35 contacts of right surface of contact, the fan-shaped braking surface part of brake support frame 32 has the pad fan groove in the side towards brake shoe 33, being partly embedded in the pad fan groove in the brake shoe 33.The arc length of fan-shaped braking surface part is mated with the arc length of braking fan groove, the arc length of pad fan groove is less than the arc length of braking fan groove, simultaneously, brake shoe 33 embeds the arc length of part in the pad fan groove and the arc length coupling of pad fan groove, brake shoe 33 embeds the arc length of part in the pad fan groove less than the brake shoe 33 outer arc length that are exposed at pad fan groove part, the brake shoe 33 outer arc length of pad fan groove part and the arc length couplings of braking fan groove of being exposed at.
Have 3 bolts hole that are used for fixed sectors break 3 on the break pedestal 31, the bolt hole that break fixing bolt 36 passes on the break pedestal 31 is fixedlyed connected with outer bearing ring 21, have 2 cavitys on the break pedestal 31, cavity is communicated with by dwindling the hole with outside, the top of the T shape support of brake support frame 32 is embedded in the cavity of break pedestal 31, the top end face external diameter of T shape support is greater than the internal diameter that dwindles the hole, and the top of T shape support is connected with the oil hydraulic cylinder of outside.
Inside brake ring 27 can use the material different with inner bearing ring 22 and have different roughness.
Fixedly connected with tower top flange 4 by tower top flange bolt 41 together with inside brake ring 27 in inner bearing ring 22 lower ends, the a plurality of fan-shaped breaks 3 of the uniform installation in the lower end surface of outer bearing ring 21, fixedly connected with the cabin underframe 1 of wind-powered electricity generation unit by cabin underframe fixing bolt 11 in outer bearing ring 21 upper ends.
The break pedestal 31 of fan-shaped break 3 is fixed on the lower end surface of outer bearing ring 21, plural oil hydraulic cylinder promotes brake support frame 32 and makes fore and aft motion, produce damping torque when the pad braking surface of brake shoe 33 contacts with the bearing braking surface during braking, and the tangential force that produces in the braking process acts on the left surface of contact 34 and/or right surface of contact 35 that brake support frame 32 contacts with break pedestal 31, reduces the brake wear of brake shoe.
In sum, simple in structure, the safety and stability of the present invention, working life easy to manufacture, easy to maintenance, brake shoe 33 are longer.The bearing braking surface that brake area directly uses inner bearing ring 22 or outer bearing ring 21 or inside brake ring 27 or outer brake hoop 26 to be provided with, and inner bearing ring 22 or outer bearing ring 21 or inside brake ring 27 or outer brake hoop 26 are fixedlyed connected with tower tube top flange 4, the rigidity of drag friction parts is strengthened, and is conducive to the vibration and the noise that reduce to produce in the braking process.Owing to adopt a plurality of equally distributed fan-shaped breaks 3, can reduce the delivery pressure of hydraulic system, prolong the working life of brake shoe 33.
It should be noted that at last: above embodiment is only in order to illustrate the present invention and unrestricted technological scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to above-described embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from technological scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the claim scope of the present invention.
Claims (8)
1. the braking device of a wind-power generating yaw bearing, it is characterized in that: have the driftage floating bearing, described driftage floating bearing is made of outer bearing ring (21) and inner bearing ring (22), the excircle of outer bearing ring (21) has external gear, outer bearing ring (21) top and inner bearing ring (22) are connected by ball (23), the bearing braking surface that the inner side surface of outer bearing ring (21) bottom has the hoop indent, the lower end surface of described inner bearing ring (22) is equipped with the fan-shaped break (3) more than 1, described fan-shaped break (3) is by break pedestal (31), brake support frame (32) and brake shoe (33) are formed, break pedestal (31) has the braking fan groove in the side towards brake shoe (33), the fan-shaped braking surface of brake support frame (32) is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame (32) are connected with the left surface of contact (34) of braking fan groove and/or right surface of contact (35) contact, the fan-shaped braking surface part of brake support frame (32) has the pad fan groove in the side towards brake shoe (33), being partly embedded in the pad fan groove in the brake shoe (33), described brake shoe (33) has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface, and the part in the T shape support of described brake support frame (32) is stuck in the internal cavities of break pedestal (31).
2. the braking device of a kind of wind-power generating yaw bearing according to claim 1, it is characterized in that: described bearing braking surface is dovetail groove groove face or spherical braking surface.
3. the braking device of a wind-power generating yaw bearing, it is characterized in that: have the driftage floating bearing, described driftage floating bearing is made of outer bearing ring (21) and inner bearing ring (22), outer bearing ring (21) is connected by ball (23) with inner bearing ring (22), the outer circumferential face of outer bearing ring (21) has external gear, outer bearing ring (21) lower end is equipped with outer brake hoop (26), the bearing braking surface that outer brake hoop (26) inner side surface has the hoop indent, the lower end surface of described inner bearing ring (22) is equipped with the fan-shaped break (3) more than 1, described fan-shaped break (3) is by break pedestal (31), brake support frame (32) and brake shoe (33) are formed, break pedestal (31) has the braking fan groove in the side towards brake shoe (33), the fan-shaped braking surface of brake support frame (32) is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame (32) are connected with the left surface of contact (34) of braking fan groove and/or right surface of contact (35) contact, the fan-shaped braking surface part of brake support frame (32) has the pad fan groove in the side towards brake shoe (33), being partly embedded in the pad fan groove in the brake shoe (33), described brake shoe (33) has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface, and the part in the T shape support of described brake support frame (32) is stuck in the internal cavities of break pedestal (31).
4. the braking device of a kind of wind-power generating yaw bearing according to claim 3, it is characterized in that: described bearing braking surface is dovetail groove groove face or spherical braking surface.
5. the braking device of a wind-power generating yaw bearing, it is characterized in that: have the driftage floating bearing, described driftage floating bearing is made of outer bearing ring (21) and inner bearing ring (22), the inner circumference of inner bearing ring (22) has internal gear, inner bearing ring (22) top and outer bearing ring (21) are connected by ball (23), the bearing braking surface that the outer side surface of inner bearing ring (22) bottom has the hoop indent, the lower end surface of described outer bearing ring (21) is equipped with the fan-shaped break (3) more than 1, described fan-shaped break (3) is by break pedestal (31), brake support frame (32) and brake shoe (33) are formed, break pedestal (31) has the braking fan groove in the side towards brake shoe (33), the fan-shaped braking surface of brake support frame (32) is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame (32) are connected with the left surface of contact (34) of braking fan groove and/or right surface of contact (35) contact, the fan-shaped braking surface part of brake support frame (32) has the pad fan groove in the side towards brake shoe (33), being partly embedded in the pad fan groove in the brake shoe (33), described brake shoe (33) has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface, and the part in the T shape support of described brake support frame (32) is stuck in the internal cavities of break pedestal (31).
6. the braking device of a kind of wind-power generating yaw bearing according to claim 5, it is characterized in that: described bearing braking surface is dovetail groove groove face or spherical braking surface.
7. the braking device of a wind-power generating yaw bearing, it is characterized in that: have the driftage floating bearing, described driftage floating bearing is made of outer bearing ring (21) and inner bearing ring (22), the inner circumference of inner bearing ring (22) has internal gear, inner bearing ring (22) is connected by ball (23) with outer bearing ring (21), inner bearing ring (22) lower end is equipped with inside brake ring (27), the bearing braking surface that inside brake ring (27) outer side surface has the hoop indent, the lower end surface of described outer bearing ring (21) is equipped with the fan-shaped break (3) more than 1, described fan-shaped break (3) is by break pedestal (31), brake support frame (32) and brake shoe (33) are formed, break pedestal (31) has the braking fan groove in the side towards brake shoe (33), the fan-shaped braking surface of brake support frame (32) is partly embedded in the braking fan groove, the both ends of the surface of the fan-shaped braking surface part of brake support frame (32) are connected with the left surface of contact (34) of braking fan groove and/or right surface of contact (35) contact, the fan-shaped braking surface part of brake support frame (32) has the pad fan groove in the side towards brake shoe (33), being partly embedded in the pad fan groove in the brake shoe (33), described brake shoe (33) has the pad braking surface of the fan-shaped evagination that matches with the bearing braking surface, and the part in the T shape support of described brake support frame (32) is stuck in the internal cavities of break pedestal (31).
8. the braking device of a kind of wind-power generating yaw bearing according to claim 7, it is characterized in that: described bearing braking surface is dovetail groove groove face or spherical braking surface.
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| CN2011101415022A CN102220939B (en) | 2011-05-28 | 2011-05-28 | Braking device of wind power generation yaw bearing |
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| CN2011101415022A CN102220939B (en) | 2011-05-28 | 2011-05-28 | Braking device of wind power generation yaw bearing |
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| CN102220939B true CN102220939B (en) | 2013-09-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103161686A (en) * | 2011-12-19 | 2013-06-19 | 江苏文德新能源有限公司 | Yaw mechanical locking device of wind turbine generator set |
| CN103440386B (en) * | 2013-09-06 | 2016-03-09 | 南车株洲电力机车研究所有限公司 | Wind driven generator yaw system driving moment computing system and method thereof |
| JP6821344B2 (en) * | 2016-07-08 | 2021-01-27 | ナブテスコ株式会社 | Windmill drive system and windmill |
| CN106438222B (en) * | 2016-08-12 | 2019-01-25 | 沈阳工业大学 | Wind power generating set sliding bearing yaw oscillation noise digestion instrument |
| DK179778B1 (en) * | 2017-09-15 | 2019-05-28 | Envision Energy (Denmark) Aps | Improved bearing and method of operating a bearing |
| CN111140432B (en) * | 2018-11-05 | 2021-10-15 | 中国船舶重工集团海装风电股份有限公司 | Wind turbine generator system variable pitch system and wind turbine generator system |
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Effective date of registration: 20170807 Address after: Fenglin Road, Wujin high tech Industrial Development Zone, Changzhou City, Jiangsu Province, No. 213164 199-1 Co-patentee after: New United Group Co., Ltd. Patentee after: Jiangsu New United Heavy Industry Technology Co., Ltd. Address before: 213164 Jiangsu city of Changzhou province were Wujin high tech Industrial Development Zone, Road No. 68 Patentee before: Jiangsu New United Heavy Industry Technology Co., Ltd. |
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