[특허]Track link structure and pin joint assembly

Caterpillar Inc.

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Track link structure and pin joint assembly

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-055/21 B62D-055/205
출원번호	US-0825456 (2015-08-13)
등록번호	US-10065692 (2018-09-04)
발명자 / 주소	Brooks, Jennifer Ann Recker, Roger Lee
출원인 / 주소	Caterpillar Inc.
대리인 / 주소	Mattingly Burke Cohen & Biederman
인용정보	피인용 횟수 : 0 인용 특허 : 10

초록

A track link includes a link body having first and second sides, a rail surface, a shoe engaging surface, and first and second end portions. A link pin bore at the first end portion is configured to receive a link pin. A bushing bore at the second end portion is configured to receive a bushing. A link pin boss is located at the first end portion on the first side and surrounds the link pin bore. A bushing boss is located at the second end portion on the second side and surrounds the bushing bore.

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1. A track link, comprising: a link body having first and second sides, a rail surface, a shoe engaging surface, and first and second end portions;a link pin bore at the first end portion configured to receive a link pin;a bushing bore at the second end portion configured to receive a bushing;a link pin boss located at the first end portion on the first side, surrounding the link pin bore, and including an annular protrusion on the first side of the link body;an annular recess on the second side of the link body and on the first end portion opposite the annular protrusion of the link pin boss, the annular recess having a diameter approximately equal to the diameter of the bushing bore and approximately equal to or less than the outer diameter of the annular protrusion of the link pin boss;wherein the link body has a first lateral thickness and a second lateral thickness, the first lateral thickness extending from an outermost surface of the first side to an outermost surface of the second side and from an outermost end of the annular recess to an outermost end of the annular protrusion of the link pin boss and being measured at the link pin bore, and the second lateral thickness extending from the outermost surface of the first side to the outermost surface of the second side and being measured at the rail surface at the first end portion of the link body;wherein the first lateral thickness is less than or equal to the second lateral thickness;a bushing boss located at the second end portion on the second side and surrounding the bushing bore, and including a second annular protrusion on the second side of the link body; anda third protrusion located on the second side of the link body opposite the annular protrusion of the link pin boss, the third protrusion at least partially surrounding the link pin bore and the annular recess. 2. The track link of claim 1, wherein the rail surface is generally planar and is configured for engagement with one or more guiding components. 3. The track link of claim 1, wherein the shoe engaging surface includes at least one aperture and is configured to support a track shoe. 4. The track link of claim 3, further comprising at least one access window extending through the link body and configured to provide access for attaching at least one fastener through the at least one aperture. 5. The track link of claim 1, wherein: the first side of the link body on the first end portion includes a first sloping portion extending from the rail surface away from the link body, and a radiused transition portion extending between the first sloping portion and the link pin boss; andthe second side of the link body on the second end portion includes a second sloping portion extending from the rail surface toward the bushing boss. 6. The track link of claim 1, wherein the first side of the link body on the second end portion includes a substantially planar top portion extending generally perpendicularly from the rail surface, an intermediate sloping portion extending from the top portion toward the second side of the link body on the second end portion, and a substantially planar bottom portion extending to the bushing bore. 7. The track link of claim 1, wherein the second side of the link body on the first end portion includes a substantially planar top portion extending generally perpendicularly from the rail surface, an intermediate sloping portion extending from the top portion away from the first side, and a raised annular portion around an annular recess. 8. A pin joint assembly, comprising: a first link having a rail surface, a shoe engaging surface, an outer side face, an inner side face, and a first bore extending through a first end portion of the first link;a second link having a rail surface, a shoe engaging surface, an outer side face, an inner side face, and a second bore extending through a second end portion of the second link, the first and second bores being axially aligned;a link pin positioned within and press-fitted in the first bore;a bushing positioned coaxially around the link pin and extending through the second bore and beyond the outer side face of the second link, the bushing being press-fitted in the second bore;a link pin boss on the outer side face of the first link;a bushing boss on the inner side face of the second link that includes an annular protrusion on the inner side face of the second link;wherein the first end portion of the first link includes a raised annular portion around the first bore on the inner side face of the first link, adjacent to and mating with a recessed annular portion on the outer side face of the second link and on the second end portion of the second link and around the second bore;wherein a surface portion of the inner side face of the first link on the first end portion of the first link mates with a surface portion of the outer side face of the second link on the second end portion of the second link, and wherein the mating surface portions extend generally perpendicularly from the rail surfaces of the first and second links, then slope towards the second link, then extend generally perpendicularly away from the rail surfaces to form offset mating surfaces adjacent an upper portion of the first and second links;wherein the first link has a first lateral thickness and a second lateral thickness, the first lateral thickness extending from an outermost surface of the outer side face to an outermost surface of the inner side face and from an outermost surface of the annular protrusion to an outermost surface of the annular recess and being measured at the first bore, and the second lateral thickness extending from an outermost surface of the outer side face to an outermost surface of the inner side face and being measured at the rail surface at the first end portion of the first link; andwherein the first lateral thickness is less than or equal to the second lateral thickness. 9. The pin joint assembly of claim 8, wherein the link pin boss is an annular protrusion around the first bore. 10. The pin joint assembly of claim 8, wherein the recessed annular portion on the outer side face of the second link and on the second end portion of the second link has a diameter approximately equal to the diameter of the annular protrusion around the second bore. 11. The pin joint assembly of claim 8, further including an annular recess on the inner side face of the first link concentric to the link pin and having a diameter approximately equal to the diameter of the bushing. 12. A pin joint assembly, comprising: a first link having first and second end portions, a rail surface, a shoe engaging surface, and inner and outer side faces, and a second link having first and second end portions, a rail surface, a shoe engaging surface, and inner and outer side faces;a first bore extending through the first end portion of the first link;a second bore extending through the second end portion of the second link, the first and second bores being axially aligned;a pivotal connection between the first and second links including a link pin positioned within the first bore, and a bushing coaxially around the link pin and positioned within the second bore;a link pin boss on the outer side face of the first link, including an annular protrusion around the first bore on the outer side face of the first link;a bushing boss on the inner side face of the second link, including an annular protrusion around the second bore on the inner side face of the second link;a second protrusion located on the inner side face of the first link opposite the annular protrusion of the link pin boss, the second protrusion at least partially surrounding the first bore;an annular recess on the inner side face of the first link concentric to the link pin, the second protrusion at least partially surrounding the annular recess, and the annular recess having a diameter approximately equal to the diameter of the bushing and approximately equal to or less than the diameter of the annular protrusion around the first bore;wherein the first link has a first lateral thickness and a second lateral thickness, the first lateral thickness extending from an outermost surface of the outer side face to an outermost surface of the inner side face and from an outermost surface of the annular protrusion of the link pin boss to an outermost surface of the annular recess and being measured at the first bore, and the second lateral thickness extending from an outermost surface of the outer side face to an outermost surface of the inner side face and being measured at the rail surface at the first end portion of the first link; andwherein the first lateral thickness is less than or equal to the second lateral thickness.

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