Bearing device, retention mechanism and method for retaining at least one pad
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16C-017/00
F16C-032/06
출원번호
US-0858154
(2010-08-17)
등록번호
US-8734019
(2014-05-27)
우선권정보
IT-CO2009A0031 (2009-09-22)
발명자
/ 주소
Palomba, Sergio
De Iaco, Marco
Masala, Andrea
Alessio, Anichini
Francesco, Grifoni
출원인 / 주소
Nuovo Pignone S.p.A.
대리인 / 주소
Global Patent Operation
인용정보
피인용 횟수 :
2인용 특허 :
18
초록▼
Method, retention mechanism and bearing device for retaining at least one pad inside the bearing device. The bearing device includes a ring having at least a retaining head, at least one pad disposed inside the ring and having a bottom recess portion configured to receive the at least a retaining he
Method, retention mechanism and bearing device for retaining at least one pad inside the bearing device. The bearing device includes a ring having at least a retaining head, at least one pad disposed inside the ring and having a bottom recess portion configured to receive the at least a retaining head, the at least one pad being configured to pivot on the at least a retaining head, and a retention mechanism configured to retain the at least one pad within a predetermined volume inside the ring. The retention mechanism is configured to apply a retaining force on the at least one pad, in addition to a force between the retaining head and the at least one pad, where the retaining force acts substantially along a radial direction of the ring, away from a center of the ring.
대표청구항▼
1. A bearing device comprising: a ring having a center and at least a retaining head;wherein the ring is configured to hold at least one pad inside the ring, the pad having a bottom recess portion configured to receive the retaining head, the pad being configured to pivot on the retaining head; anda
1. A bearing device comprising: a ring having a center and at least a retaining head;wherein the ring is configured to hold at least one pad inside the ring, the pad having a bottom recess portion configured to receive the retaining head, the pad being configured to pivot on the retaining head; anda retention mechanism including (i) first and second type plates configured to retain the pad within a predetermined volume inside the ring and (ii) a biasing device configured to apply, when the biasing device is engaged to the retaining head, a retaining force on the pad, the retaining force being in a redial direction of the ring and away from the center of the ring. 2. The bearing device of claim 1, wherein the first and second type plates respectively include (i) retention plates having protrusions configured to fit in grooves associated with the pad and (ii) a blocking plate. 3. The bearing device of claim 2, wherein the protrusions extend along a side of the retention plates and have a height smaller than a width of the side grooves of the at least one pad such that the at least one pad is able to pivot on the at least a retaining head, and the biasing device includes springs disposed on the retention plates and configured to apply a biasing force on sides of the side grooves of the at least one pad. 4. The bearing device of claim 3, wherein the springs are shaped such that end portions of the springs are configured to be attached to the protrusions of the retention plates and a central region of the springs is configured to touch the at least one pad but not the protrusions of the retention plates. 5. The bearing device of claim 3, wherein the springs are configured to produce the retaining force to be equal or larger than a dislocating force, wherein the dislocating force is produced at least by a rotation relative to the at least one pad or oil pressure and the dislocating force is substantially along a radial direction of the ring, acting towards the center of the ring. 6. The bearing device of claim 1, wherein the retention mechanism comprises: a collar formed around a neck of the retaining head and configured to be attached to the at least one pad such that a dislocating force acting on the at least one pad is decreased by the retaining force between the collar and the retaining head. 7. The bearing device of claim 6, wherein the collar is configured to be screwed into the at least one pad. 8. The bearing device of claim 1, wherein the retaining mechanism comprises: a fastener to be disposed through an oversized hole of the retaining head and attached to a region of the bottom recess portion of the at least one pad, wherein the fastener is configured to move inside the oversized hole such that the at least one pad pivots around the retaining head when the fastener is screwed into the at least one pad. 9. The bearing device of claim 8, wherein the fastener is configured such that a dislocating force acting on the at least one pad is decreased by the retaining force between the fastener and the retaining head. 10. A bearing device comprising: a ring having at least a retaining head;at least one pad disposed inside the ring and having a bottom recess portion configured to receive the at least a retaining head, the at least one pad being configured to pivot on the retaining head; anda retention mechanism configured to retain the at least one pad within a predetermined volume inside the ring and to apply a retaining force on the at least one pad, in addition to a force between the retaining head and the at least one pad, wherein the retaining force acts substantially along a radial direction of the ring, away from a center of the ring, whereinthe retention mechanism includes two or more of,(i) the retention plates having protrusions configured to fit inside grooves of the at least one pad, andsprings disposed on the retention plats and configured to press on sides of the side grooves of the at least one pad for generating the retaining force,(ii) a collar formed around a neck of the at least a retaining head and configured to be attached to the at least one pad, and(iii) a fastener configured to be disposed through an oversized hole of the at least a retaining head and attached to a region of the bottom recess portion of the at least one pad, whereinthe fastener is configured to move inside the oversized hole such that the at least one pad pivots around the at least a retaining head when the fastener is screwed into the at least one pad. 11. A retention mechanism for retaining at least one pad inside a predetermined volume inside a bearing device, the retention mechanism, comprising: first and second type plates configured to contact the pad and the bearing device; anda biasing device configured to apply a retaining force on the pad and a retaining head holding the at least one pad in a ring of the bearing device, wherein the retaining force acts substantially along a radial direction of the ring of the bearing device, away from a center of the ring. 12. The retention mechanism of claim 11, wherein the first type plates include plates having protrusions configured to fit inside grooves of the pad, the protrusions extending along a side of the retention plates and have height smaller than a width of the side grooves of the pad such that the pad is able to pivot on the retaining head attached to the ring, andwherein the biasing device includes springs disposed on the retention plates and configured to apply a biasing force on sides of the side grooves of the pad. 13. The retention mechanism of claim 12, wherein the springs are shaped such that end portions of the springs are configured to be attached to protrusions of the retention plates and a central region of the springs is configured to touch the at least one pad but not the protrusions of the retention plates. 14. The retention mechanism of claim 12, wherein the dislocating force if produced at least by a rotation of a rotor relative to the at least one pad or oil pressure and the dislocating force is substantially along the radial direction of the ring, acting towards the center of the ring. 15. The retention mechanism of claim 11, further comprising: a collar formed around a neck of the retaining head and configured to be attached to the at least one pad such that a dislocating force acting on the at least one pad is decreased by the retaining force between the collar and the retaining head. 16. The retention mechanism of claim 15, wherein the collar is configured to be screwed into the at least one pad. 17. The retention mechanism of claim 11, further comprising: a fastener to be disposed through an oversized hole of the retaining head and attached to a bottom region of the at least one pad, wherein the fastener is configured to move inside the oversized hole such that the at least one pad around the retaining head when the fastener is screwed into the at least one pad. 18. A method for retaining at least one pad within a predetermined volume inside a ring of a bearing device, the method comprising: disposing the pad on a retaining head of the ring such that a bottom recess portion of the pad is configured to receive a retaining head, the pad being configured to pivot on the retaining head;retaining the at least one pad with a retention mechanism including first and second type plates and a biasing device that is configured to retain the at least one pad within the predetermined volume inside the ring; andconfiguring the biasing device to apply a retaining force on the pad when the bearing device is engaged to the retaining head, the retaining force being in a redial direction of the ring and away from the center of the ring. 19. The method of claim 18, further comprising: configuring the retaining mechanism to include retention plates having protrusions configured to fit inside grooves of the at least one pad, andapplying springs on the retention plates to press on sides of the side grooves of the at least one pad for generating the retaining force. 20. The method of claim 18, further comprising: configuring the retaining mechanism to include a collar formed around a neck of the retaining head, the collar being attached to the at least one pad; and/orconfiguring the retaining mechanism to include a fastener to be disposed through an oversized hole of the retaining head into a region of the bottom recess portion of the at least one pad such that the fastener moves inside the oversized hole such that the at least one pad pivots around the retaining head.
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