Pin assembly of track roller bogie in crawler type traveling apparatus and crawler type traveling apparatus with the assembly
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-053/00
F01M-011/04
출원번호
UP-0574977
(2004-10-06)
등록번호
US-7744169
(2010-07-19)
국제출원번호
PCT/JP2004/014732
(2004-10-06)
§371/§102 date
20060407
(20060407)
국제공개번호
WO05/035343
(2005-04-21)
발명자
/ 주소
Murakami, Shota
Yoshida, Tsuyoshi
출원인 / 주소
Komatsu Ltd.
대리인 / 주소
Fish & Richardson P.C.
인용정보
피인용 횟수 :
3인용 특허 :
7
초록▼
A pin assembly suitable for mounting a track roller bogie on a track frame of a crawler type traveling apparatus includes first to third rings disposed on an outer peripheral surface of a pin having lubricant supply passages. Seals are disposed between end faces of the respective rings and end faces
A pin assembly suitable for mounting a track roller bogie on a track frame of a crawler type traveling apparatus includes first to third rings disposed on an outer peripheral surface of a pin having lubricant supply passages. Seals are disposed between end faces of the respective rings and end faces other than those of the seals are formed in slide contact faces, which slidably direct contact with each other. As compared with a conventional case in which spacers are installed between the first to third rings, the total wear amount of the slide contact faces is remarkably reduced, the number of parts is reduced by abolishing the conventional spacers which caused defective lubrication, and a load between the rings in a thrust direction is directly received between the rings. As a result, the troublesomeness of an assembly of track roller bogie and a reduction in service life due to defective lubrication can be eliminated.
대표청구항▼
The invention claimed is: 1. A pin assembly of a track roller bogie in a crawler type traveling apparatus, comprising: a pin including a lubricant filling hole therein and a lubricant outflow hole for outflow of lubricant from the lubricant filling hole to an outer peripheral portion; a first ring
The invention claimed is: 1. A pin assembly of a track roller bogie in a crawler type traveling apparatus, comprising: a pin including a lubricant filling hole therein and a lubricant outflow hole for outflow of lubricant from the lubricant filling hole to an outer peripheral portion; a first ring including an abutment face for abutting with the pin at one end and fixed to the pin; a second ring fitted on the pin to contact with a portion of an other end face of the first ring in a pin axis direction and to be rotable thereabout; and a third ring fixed to the pin to contact with a portion of an other end face of the second ring in the pin axis direction, wherein outside diameters of the first ring, the second ring, and the third ring are d1, d2, and d3, respectively, a relationship between d1, d2, d3 is d1<d2<d3, wherein the pin assembly further comprises an annular recessed groove portion in a portion between respective contact end faces of the first, second, and third rings, and sealing means to prevent leakage of the lubricant disposed in the recessed groove portion, and wherein the respective adjacent end faces, excluding the respective recessed groove portions, on inner periphery sides of the first, second, and third rings directly contact with one another. 2. A pin assembly according to claim 1, further comprising slide portions between the first, second, and third rings, wherein each of slide portions between the first, second, and third rings includes a slide contact face through which each of the rings directly contacts and a seal face of the sealing means corresponding to each slide contact face; and the slide contact face and the seal face form substantially a same plane in a radial direction. 3. A crawler type traveling apparatus comprising: a track frame; an idler tumbler; a sprocket wheel; a carrier roller; a track roller bogie axially supported on the track frame and including a track roller; and a crawler chain wound around the idler tumbler, the sprocket wheel, the carrier roller, and the track roller, wherein the track roller bogie is axially supported on the track frame by the pin assembly according to any one of claims 1 or 2. 4. A crawler type traveling apparatus comprising: a track frame; an idler tumbler; a sprocket wheel; a carrier roller; a track roller bogie axially supported on the track frame and including a track roller; and a crawler chain wound around the idler tumbler, the sprocket wheel, the carrier roller, and the track roller, wherein the track roller bogie includes a first bogie link axially supported on the track frame and a second bogie link axially supported on the first bogie link and to which the track roller is mounted, and the first bogie link is axially supported on the track frame by the pin assembly according to any one of claims 1 or 2. 5. A crawler type traveling apparatus comprising: a track frame; an idler tumbler; a sprocket wheel; a carrier roller; a track roller bogie axially supported on the track frame and including a track roller; and a crawler chain wound around the idler tumbler, the sprocket wheel, the carrier roller, and the track roller, wherein the track roller bogie includes a first bogie link axially supported on the track frame and a second bogie link axially supported on the first bogie link and to which the track roller is mounted, and the second bogie link is axially supported on the first bogie link by the pin assembly according to any one of claims 1 or 2. 6. A crawler type traveling apparatus comprising: a track frame; an idler tumbler; a sprocket wheel; a carrier roller; a track roller bogie axially supported on the track frame and including a track roller; and a crawler chain wound around the idler tumbler, the sprocket wheel, the carrier roller, and the track roller, wherein the track roller bogie includes a first bogie link axially supported on the track frame and a second bogie link axially supported on the first bogie link and to which the track roller is mounted, and the first bogie link and the second bogie link are axially supported on the track frame and to the first bogie link, respectively, by the pin assembly according to any one of claims 1 or 2.
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