IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0258162
(2001-05-04)
|
우선권정보 |
FR-00 05694(2000-05-04) |
국제출원번호 |
PCT/FR01/001367
(2001-05-04)
|
§371/§102 date |
20021018
(20021018)
|
국제공개번호 |
WO01/084039
(2001-11-08)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
5 |
초록
▼
The invention relates to a self-propelled carriage suitable for traveling in a gallery of substantially cylindrical shape. The carriage comprises a chassis (1) made up of two wheel sets ( 14); a skip (10); and a horizontal longitudinal support axis (16) on which said skip is pivotally mounted. Each
The invention relates to a self-propelled carriage suitable for traveling in a gallery of substantially cylindrical shape. The carriage comprises a chassis (1) made up of two wheel sets ( 14); a skip (10); and a horizontal longitudinal support axis (16) on which said skip is pivotally mounted. Each wheel set comprises two arms (24, 26) each having a first end pivotally mounted on one end of said axis; two rotary drive shafts (32) extend orthogonally to the support axis and are mounted at the opposite ends of the arms; drive means (38) for rotating said shafts; and two wheels (40, 42), each wheel comprising a hub (54) secured to a respective drive shaft, at least one circular disk secured to the hub, and having its periphery fitted with a plurality of rollers mounted to rotate freely about axes that are orthogonal to the axis of the wheel.
대표청구항
▼
What is claimed is: 1. A self-propelled carriage suitable for moving in a gallery of substantially cylindrical shape that has no internal rail, the carriage comprising: a chassis comprising no more than two wheel sets, respectively a front set and a rear set; a skip; and a horizontal longitudinal s
What is claimed is: 1. A self-propelled carriage suitable for moving in a gallery of substantially cylindrical shape that has no internal rail, the carriage comprising: a chassis comprising no more than two wheel sets, respectively a front set and a rear set; a skip; and a horizontal longitudinal support axis on which said skip is pivotally mounted in its length direction, each one of said two wheel sets being connected to a respective end of said support axis; each one of said two wheel sets comprising: two arms wherein each arm being a fixed length, a first end of each arm being pivotally mounted on one end of said support axis, said two arms lying in a common plane orthogonal to said support axis; means for maintaining the two arms at a constant angular separation; two rotary drive shafts, each drive shaft being pivotally mounted at a second end of the respective arm, said two drive shafts being orthogonal to said support axis; means for rotating said two drive shafts; and two wheels, each one of said two wheels comprising a hub secured to a corresponding rotary drive shaft, at least one circular disk secured to the hub such that the disk is perpendicular to the drive shaft, said disk having a periphery at which a plurality of rollers for co-operating with the cylindrical wall of said gallery, the two wheels of each of the two wheel sets being in sole contact with the cylindrical wall of the gallery, each roller being mounted to rotate freely about an axis that is orthogonal to the rotary drive shaft of the wheel. 2. A carriage according to claim 1, wherein the center of gravity of said skip lies beneath said skip support axis. 3. A carriage according to claim 2, wherein the center of gravity of each wheel set lies beneath the center of gravity of the skip. 4. A carriage according to claim 1, wherein each wheel comprises three mutually parallel disks secured to the wheel hub, the periphery of each disk being provided with said rollers. 5. A carriage according to claim 4, wherein the rollers on each disk are regularly spaced apart angularly. 6. A carriage according to claim 5, wherein the mid-planes of the rollers orthogonal to the axes of rotation of the rollers on one disk are angularly offset relative to the corresponding mid-planes of the rollers on the other two disks. 7. A carriage according to claim 4, wherein all of the rollers are substantially identical, and the circle to which the axis of rotation of the rollers of the central disk are tangential is of diameter greater than the corresponding diameters of the two side disks. 8. A carriage according to claim 1, wherein said means for maintaining the two arms of a wheel set at a constant spacing are adjustable, thereby enabling said spacing to be adapted to match the diameter of said gallery. 9. A carriage according to claim 1, wherein the rolling surface of each roller is a surface of revolution about the axis of rotation of the roller and having a generator line constituted by a circular arc. 10. A carriage according to claim 1, farther comprising two longitudinally extending members parallel to said support axis, each longitudinally extending member securing one arm of one of the wheel sets to the corresponding arm of the other wheel set. 11. A self-propelled carriage suitable for moving in a gallery of substantially cylindrical shape that has no internal rail, the carriage comprising: a chassis comprising no more than two wheel sets, respectively a front set and a rear set; a skip; and a horizontal longitudinal support axis on which said skip is pivotally mounted in its length direction, each one of said two wheel sets being connected to a respective end of said support axis; each one of said two wheel sets comprising: at most two arms wherein each arm being a fixed length, a first end of each one of said two arms being pivotally mounted on one end of said support axis, said two arms lying in a common plane orthogonal to said support axis; means for maintaining the two arms at a constant angular separation; two rotary drive shafts, each drive shaft being pivotally mounted at a second end of the respective arm, said drive shafts being orthogonal to said support axis; means for rotating said two drive shafts; and two wheels constructed to ride directly on the internal surface of the gallery, each one of said wheels comprising a hub secured to a corresponding rotary drive shaft, at least one circular disk secured to the hub such that the disk is perpendicular to the drive shaft, said disk having a periphery at which a plurality of rollers for co-operating with the cylindrical wall of said gallery, each roller being mounted to rotate freely about an axis that is orthogonal to the rotary drive shaft of the wheel.
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