[미국특허]
Railcar truck roller bearing adapter pad systems
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B61F-005/26
B61F-005/12
B61F-005/50
B61F-005/30
B61F-005/32
출원번호
US-0562005
(2014-12-05)
등록번호
US-9758181
(2017-09-12)
발명자
/ 주소
Gotlund, Erik L.
Jeambey, Jon R.
Nibouar, F. Andrew
Pike, James A.
Bryant, Jason C.
Stull, Jonathan A.
Kurtzhals, William A.
Manibharathi, Roshan N.
출원인 / 주소
Nevis Industries LLC
대리인 / 주소
Banner & Witcoff, Ltd.
인용정보
피인용 횟수 :
0인용 특허 :
105
초록▼
A railcar truck and adapter pad system for placement between a roller bearing and side frame pedestal roof of a three-piece railcar truck. Many different features of the pad and/or the adapter-pad interface are configured to improve stiffness characteristics to satisfy both curving and high speed pe
A railcar truck and adapter pad system for placement between a roller bearing and side frame pedestal roof of a three-piece railcar truck. Many different features of the pad and/or the adapter-pad interface are configured to improve stiffness characteristics to satisfy both curving and high speed performance of the railcar truck.
대표청구항▼
1. A roller bearing adapter pad system configured for use with a three-piece truck having AAR standard geometry comprising: a roller bearing adapter configured to engage a roller bearing, the roller bearing adapter comprising: a crowned top surface;a bottom surface configured to engage a roller bear
1. A roller bearing adapter pad system configured for use with a three-piece truck having AAR standard geometry comprising: a roller bearing adapter configured to engage a roller bearing, the roller bearing adapter comprising: a crowned top surface;a bottom surface configured to engage a roller bearing;first and second vertical shoulders that project upwardly from opposite lateral edges of the top surface, each vertical shoulder having a width of at least 0.5 inches;first and second longitudinal stops that project upwardly from opposite longitudinal edges of the top surface;wherein the roller bearing adapter is symmetrical about a lateral centerline and symmetrical about a longitudinal centerlinewherein the thickness of the roller bearing adapter measured between the crowned top surface and the bottom surface is less than 0.75 inches as measured at the longitudinal centerline;wherein the roller bearing adapter has cross-sectional moment of inertia of a cross-section at the longitudinal centerline of the roller bearing adapter around a lateral axis about 5.2 inches above a center axis of an axle that is in the range of about 1.0 in4 to about 2.0 in4;wherein the roller bearing adapter has a cross-sectional moment of inertia of a cross-section at the longitudinal centerline of the roller bearing adapter around a vertical axis at the center of the adapter that is in the range of about 50 in4 to about 100 in4;an adapter pad engaged with the roller bearing adapter and configured to engage a side frame pedestal roof, the adapter pad comprising: a continuous top plate having a central portion, first and second upturned regions projecting upwardly from opposite edges of the central portion, a first lateral flange projecting outwardly from the first upturned region, and a second lateral flange projecting outwardly from the second upturned region;a continuous bottom plate having a central portion, first and second upturned regions projecting upwardly from opposite edges of the central portion, a first lateral flange projecting outwardly from the first upturned region, and a second lateral flange projecting outwardly from the second upturned region;a first outer elastomeric member disposed between the first lateral flanges of the top and bottom plates, having a static thickness within the range of 0.15 inches to 0.30 inches;a second outer elastomeric member disposed between the second lateral flanges of the top and bottom plates, having a static thickness within the range of 0.15 inches to 0.30 inches;a central elastomeric member disposed between the central portion of the top and bottom plates, having uniform thickness, having a substantially uniform static thickness within the range of 0.15 inches to 0.25 inches;a first substantially hollow portion disposed between the top plate and the bottom plate and between the central elastomeric member and the first outer elastomeric member;a second substantially hollow portion disposed between the top plate and the bottom plate and between the central elastomeric member and the second outer elastomeric member;a first lateral adapter grip disposed between an inside surface of the first vertical shoulder of the engaged roller bearing adapter and the first upturned region of the bottom plate;a second lateral adapter grip disposed between an inside surface of the second vertical shoulder of the engaged roller bearing adapter and the second upturned region of the bottom plate;a first lateral side frame grip disposed on an outer surface of the first upturned region of the top plate;a second lateral side frame grip disposed between an outer surface of the second upturned region of the top plate;wherein the first and second laterally projecting flanges of the top plate and the bottom plate and the first and second outer elastomeric members of each adapter pad are entirely disposed above the vertical shoulders of the roller bearing adapter. 2. The roller bearing adapter pad system of claim 1, wherein the thickness of the adapter is between 0.60 and 0.75 inches as measured at the longitudinal centerline from bottom surface to the crowned top surface of the roller bearing adapter. 3. The roller bearing adapter pad system of claim 1, wherein the first outer elastomeric member and the second outer elastomeric member of each of the adapter pads are precompressed between the respective first lateral flanges of the top and bottom plates and the second lateral flanges of the top and bottom plates. 4. The roller bearing adapter pad system of claim 1, wherein the bottom plate of each adapter pad is fixedly engaged with the roller bearing adapter such that movement between the bottom plate and each roller bearing adapter is restricted. 5. A roller bearing adapter pad system configured for use with a three-piece truck having AAR standard geometry comprising: a roller bearing adapter configured to engage a roller bearing, the roller bearing adapter comprising: a top surface;a bottom surface configured to engage a roller bearing;first and second vertical shoulders that project upwardly from opposite lateral edges of the top surface, each vertical shoulder having a width of at least 0.5 inches and a height in the range of 0.75 inches to 1.5 inches;an adapter pad engaged with the roller bearing adapter and configured to engage a side frame pedestal roof, the adapter pad comprising: a continuous top plate having a central portion, first and second upturned regions projecting upwardly from opposite edges of the central portion, a first lateral flange projecting outwardly from the first upturned region, and a second lateral flange projecting outwardly from the second upturned region;a continuous bottom plate having a central portion, first and second upturned regions projecting upwardly from opposite edges of the central portion, a first lateral flange projecting outwardly from the first upturned region, and a second lateral flange projecting outwardly from the second upturned region;a first outer elastomeric member disposed between the first lateral flanges of the top and bottom plates, defining a first outer edge;a second outer elastomeric member disposed between the second lateral flanges of the top and bottom plates, defining a second outer edge;a central elastomeric member disposed between the central portion of the top and bottom plates, defining a third outer edge;a first substantially hollow portion disposed between the top plate and the bottom plate and between the central elastomeric member and the first outer elastomeric member;a second substantially hollow portion disposed between the top plate and the bottom plate and between the central elastomeric member and the second outer elastomeric member;wherein the first and second laterally projecting flanges of the top plate and the bottom plate and the first and second outer elastomeric members of each adapter pad are entirely disposed above the vertical shoulders of the roller bearing adapter;wherein the combined surface area of the first and second outer elastomeric members at cross-sectional planes through the first and second outer elastomeric members in planes centered between the inner surfaces of the top and bottom plates is at least 10 percent of the surface area of the central elastomeric member at a cross-section plane through the center of the central elastomeric member in a centered between the inner surfaces of the top and bottom plates; andwherein the combined top plate, bottom plate, and elastomeric members provide a longitudinal stiffness of at least 45,000 pounds per inch through a longitudinal displacement of the top plate relative to the bottom plate of up to 0.139 inches from a central position, a lateral stiffness of at least 45,000 pounds per inch through a lateral displacement of the top plate relative to the bottom plate of up to 0.234 inches from the central position, and a rotational stiffness of at least 250,000 pound *inches per radian of rotation through a rotational displacement of the top plate relative to the bottom plate of up to 41 milliradians from the central position when a vertical load of 35,000 pounds is applied to the central portions of the adapter pad. 6. The roller bearing adapter pad system of claim 5, wherein a first outer elastomeric member, the second outer elastomeric member, and the central elastomeric member are comprised of natural rubber. 7. The roller bearing adapter pad system of claim 5, wherein a first outer elastomeric member, the second outer elastomeric member, and the central elastomeric member have a hardness between 65-80 Shore A durometer. 8. The roller bearing adapter pad system of claim 5, wherein the first and second outer elastomeric members have a static thickness that is greater than a static thickness of the central elastomeric member. 9. The roller bearing adapter pad system of claim 5, the surface area of the first outer elastomeric member at a cross-sectional plane through the first outer elastomeric member centered between the inner surfaces the top and bottom plates is greater than 2.5 square inches; and the surface area of the second outer elastomeric member at a cross-sectional plane through second outer elastomeric member in a plane centered between the inner surfaces of the top and bottom plates is greater than 2.5 square inches. 10. The roller bearing adapter pad system of claim 5, wherein the combined surface area of the first and second outer elastomeric members at cross-sectional planes through the first and second outer elastomeric members in planes centered between the inner surfaces of the top and bottom plates is greater than 5 square inches. 11. The roller bearing adapter pad system of claim 5, wherein the first and second outer edges include a continuous radius measured from a center point of the central portion of the top plate. 12. A roller bearing adapter pad system configured for use with a three-piece truck having AAR standard geometry comprising: a roller bearing adapter configured to engage a roller bearing, the roller bearing adapter comprising: a crowned top surface;a bottom surface configured to engage a roller bearing;wherein the roller bearing adapter has cross-sectional moment of inertia of a cross-section at the longitudinal centerline of the roller bearing adapter around a lateral axis about 5.2 inches above a center axis of an axle that is in the range of about 1.0 in4 to about 2.0 in4; andwherein the roller bearing adapter has a cross-sectional moment of inertia of a cross-section at the longitudinal centerline of the roller bearing adapter around a vertical axis at the center of the adapter that is in the range of about 50 in4 to about 100 in4; andan adapter pad engaged with the roller bearing adapter and configured to engage a side frame pedestal roof, the adapter pad comprising: a continuous top plate;a continuous bottom plate;an elastomeric member disposed between the top and bottom plates, having a static thickness within the range of 0.15 inches to 0.30 inches;wherein the surface area of the elastomeric member at a cross-sectional plane centered between the inner surfaces of the top and bottom plates is greater than about 50 square inches;wherein the combined top plate, bottom plate, and elastomeric members provide a longitudinal stiffness of at least 45,000 pounds per inch through a longitudinal displacement of the top plate relative to the bottom plate of up to 0.139 inches from a central position, a lateral stiffness of at least 45,000 pounds per inch through a lateral displacement of the top plate relative to the bottom plate of up to 0.234 inches from the central position, and a rotational stiffness of at least 250,000 pound *inches per radian of rotation through a rotational displacement of the top plate relative to the bottom plate of up to 41 milliradians from the central position when a vertical load of 35,000 pounds is applied to the central portion of the adapter pad. 13. A roller bearing adapter pad system configured for use with a three-piece truck having AAR standard geometry comprising: a roller bearing adapter configured to engage a roller bearing, the roller bearing adapter comprising: a crowned top surface;a bottom surface configured to engage a roller bearing; andan adapter pad engaged with the roller bearing adapter and configured to engage a side frame pedestal roof, the adapter pad comprising: a continuous top plate having a central portion, first and second upturned regions projecting upwardly from opposite edges of the central portion, a first lateral flange projecting outwardly from the first upturned region, and a second lateral flange projecting outwardly from the second upturned region;a continuous bottom plate having a central portion, first and second upturned regions projecting upwardly from opposite edges of the central portion, a first lateral flange projecting outwardly from the first upturned region, and a second lateral flange projecting outwardly from the second upturned region;a first outer elastomeric member disposed between the first lateral flanges of the top and bottom plates;a second outer elastomeric member disposed between the second lateral flanges of the top and bottom plates;a central elastomeric member disposed between the central portion of the top and bottom plates;a first substantially hollow portion disposed between the top plate and the bottom plate and between the central elastomeric member and the first outer elastomeric member;a second substantially hollow portion disposed between the top plate and the bottom plate and between the central elastomeric member and the second outer elastomeric member;wherein the combined top plate, bottom plate, and elastomeric members provide a longitudinal stiffness of at least 45,000 pounds per inch through a longitudinal displacement of the top plate relative to the bottom plate of up to 0.139 inches from a central position, a lateral stiffness of at least 45,000 pounds per inch through a lateral displacement of the top plate relative to the bottom plate of up to 0.234 inches from the central position, and a rotational stiffness of at least 250,000 pound *inches per radian of rotation through a rotational displacement of the top plate relative to the bottom plate of up to 41 milliradians from the central position when a vertical load of 35,000 pounds is applied to the central portions of the adapter pad. 14. The roller bearing adapter pad system of claim 13, wherein the top plate, bottom plate, and elastomeric member of the adapter pad provide a vertical stiffness of at least 5,000,000 pounds per inch through a vertical displacement of the top plate relative to the bottom plate up to 0.05 inches. 15. The roller bearing adapter pad system of claim 13, wherein the top plate has a uniform thickness, and the bottom plate has a non-uniform thickness. 16. The roller bearing adapter pad system of claim 13, wherein the combined top plate, bottom plate, and elastomeric members of the adapter pad provide a shear strain that does not exceed 120% under maximum displacement. 17. The roller bearing adapter pad system of claim 13, wherein the longitudinal hysteresis is less than about 1500 lbs. 18. The roller bearing adapter pad system of claim 13, wherein the lateral displacement hysteresis is less than about 6,000 lbs. 19. The roller bearing adapter pad system of claim 13, wherein the twist hysteresis is less than about 16,000 lbs*in.
Rudibaugh John W. (West Chester PA) van Auken Charles L. (Dillsburg PA), Bearing adapter for railway trucks having downward depending ends on adapter plate for protecting the adapter thrust lug.
Paton H. Neil (2521 W. Montlake Pl. East Seattle WA 98112) Gylland ; Jr. E. Frederick (3000 Webster Point Rd. Seattle WA) Sandys Jeffrey P. (3000 Webster Point Rd. Seattle WA) Skilling John B. (3000 , Damped railway car suspension.
Paton Hamilton N. K. (2521 W. Montlake Pl. East Seattle WA 98112) Skilling John B. (3000 Webster Point Rd. Seattle WA 98105) Smith Frank F. (Albuquerque NM), Self-contained frictionally damped resilient suspension system for railcars.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.