IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0597506
(2004-08-20)
|
등록번호 |
US-8517139
(2013-08-27)
|
우선권정보 |
JP-2004-021916 (2004-01-29); JP-2004-021917 (2004-01-29); JP-2004-035222 (2004-02-12); JP-2004-035345 (2004-02-12); JP-2004-035346 (2004-02-12); JP-2004-038150 (2004-02-16); JP-2004-047452 (2004-02-24) |
국제출원번호 |
PCT/JP2004/012000
(2004-08-20)
|
§371/§102 date |
20071005
(20071005)
|
국제공개번호 |
WO2005/073008
(2005-08-11)
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발명자
/ 주소 |
- Komatsu, Masakazu
- Hayashi, Keiichi
|
출원인 / 주소 |
|
대리인 / 주소 |
Sterne, Kessler, Goldstein & Fox P.L.L.C.
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
6 |
초록
▼
With regard to a tractor having a high-powered engine, universal joints must be enlarged, whereby the attachment work of a power transmission shaft becomes difficult. Furthermore, the kind of the universal joints to be used is limited, thereby being inconvenient. Therefore, a tractor is constructed
With regard to a tractor having a high-powered engine, universal joints must be enlarged, whereby the attachment work of a power transmission shaft becomes difficult. Furthermore, the kind of the universal joints to be used is limited, thereby being inconvenient. Therefore, a tractor is constructed so that a transmission casing is arranged in a rear portion of a vehicle body, a front axle casing is arranged in the front portion of the vehicle body, and power from an engine is transmitted from an output shaft supported by the transmission casing through a power transmission shaft to an input shaft supported by the front axle casing. The tractor is characterized in that a gear casing is disposed between the transmission casing and the front axle casing, the output shaft of the transmission casing and an input shaft of the gear casing are arranged on a same line and connected to each other, and the input shaft of the front axle casing and an output shaft of the gear casing are arranged on a same line and connected to each other.
대표청구항
▼
1. A vehicle comprising: a transmission casing arranged in a rear portion of a vehicle body;a front axle casing arranged in a front portion of the vehicle body, wherein power from an engine is transmitted from an output shaft supported by the transmission casing through a power transmission shaft to
1. A vehicle comprising: a transmission casing arranged in a rear portion of a vehicle body;a front axle casing arranged in a front portion of the vehicle body, wherein power from an engine is transmitted from an output shaft supported by the transmission casing through a power transmission shaft to an input shaft supported by the front axle casing;a gear casing disposed between the transmission casing and the front axle casing, wherein:the gear casing is detachably attached to a clutch housing disposed before the transmission casing,the output shaft of the transmission casing and an input shaft of the gear casing are arranged coaxially, andthe input shaft of the front axle casing and an output shaft of the gear casing are arranged coaxially; anda crawler traveling unit including:a drive sprocket,an idler,a track roller provided between the drive sprocket and the idler,a crawler belt wound around the drive sprocket, the idler and the track roller, anda shaft rotatably supporting the track roller, wherein the shaft rotatably supporting the track roller is divided into parts along an axial direction of the shaft, and wherein the parts are connected to each other through an elastic member. 2. A vehicle as set forth in claim 1, wherein a differential mechanism is disposed in the front portion of the vehicle and comprises: a differential connecting left and right output shafts, supported by the front axle casing, through a pair of planetary gear mechanisms;a turning hydrostatic transmission, giving difference of rotation speed on the output shafts through the planetary gear mechanisms so as to perform turning of the vehicle; anda mechanical turning transmission, changing power from the turning hydrostatic transmission in speed and then transmitting the power to the differential. 3. A vehicle as set forth in claim 2, wherein the mechanical turning transmission is a hydraulic-clutch type turning transmission. 4. A vehicle as set forth in claim 3, wherein the turning transmission is interlockingly connected to a sub transmission disposed in the transmission casing. 5. A vehicle as set forth in claim 1, wherein: power from the engine mounted on the vehicle is transmitted to a hydraulic clutch type forward/rearward traveling switching device and a main transmission;subsequently the power is transmitted to a sub transmission and changed in speed, and then traveling drive is performed;a turning hydrostatic transmission is actuated so as to control turning of the vehicle; andpressure oil is returned from the turning hydrostatic transmission through an oil cooler to the transmission casing. 6. A vehicle as set forth in claim 1, wherein: power from the engine mounted on the vehicle is transmitted to a hydraulic clutch type forward/rearward traveling switching device and a main transmission;subsequently the power is transmitted to a sub transmission and changed in speed, and then traveling drive is performed;a turning hydrostatic transmission is actuated so as to control turning of the vehicle; andpressure oil returning from the turning hydrostatic transmission is supplied through an oil cooler to frictional boards of a hydraulic clutch of the forward/rearward traveling switching device. 7. A vehicle as set forth in claim 1, wherein ends of the divided shafts are shaped so as to engage with each other. 8. A vehicle as set forth in claim 7, wherein the ends of the divided shafts are shaped so as to mesh with each other. 9. A vehicle as set forth in claim 1, wherein the shaft rotatably supporting the track roller supports the track roller through a bearing. 10. A vehicle as set forth in claim 1, wherein the shaft rotatably supporting the track roller is divided along the axial direction of the shaft into a first part, a second part, and a third part, and wherein a first elastic member connects the first part and the second part and a second elastic member connects the second part and the third part. 11. A vehicle comprising: a transmission casing arranged in a rear portion of a vehicle body;a front axle casing arranged in a front portion of the vehicle body, wherein power from an engine is transmitted from an output shaft supported by the transmission casing through a power transmission shaft to an input shaft supported by the front axle casing;a gear casing disposed between the transmission casing and the front axle casing, wherein:the gear casing is constructed integrally with a flywheel casing disposed behind the engine,the output shaft of the transmission casing and an input shaft of the gear casing are arranged coaxially, andthe input shaft of the front axle casing and an output shaft of the gear casing are arranged coaxially; anda crawler traveling unit including:a drive sprocket,an idler,a track roller provided between the drive sprocket and the idler,a crawler belt wound around the drive sprocket, the idler and the track roller, anda shaft rotatably supporting the track roller, wherein the shaft rotatably supporting the track roller is divided into parts along an axial direction of the and wherein the parts are connected to each other through an elastic member. 12. A vehicle as set forth in claim 11, wherein a differential mechanism disposed in the front portion of the vehicle comprises: a differential connecting left and right output shafts, supported by the front axle casing, through a pair of planetary gear mechanisms;a turning hydrostatic transmission, giving difference of rotation speed on the output shafts through the planetary gear mechanisms so as to perform turning of the vehicle; anda mechanical turning transmission, changing power from the turning hydrostatic transmission in speed and then transmitting the power to the differential. 13. A vehicle as set forth in claim 12, wherein the mechanical turning transmission is a hydraulic-clutch type turning transmission. 14. A vehicle as set forth in claim 12, wherein the turning transmission is interlockingly connected to a sub transmission disposed in the transmission casing. 15. A vehicle as set forth in claim 11, wherein: power from the engine mounted on the vehicle is transmitted to a hydraulic clutch type forward/rearward traveling switching device and a main transmission;subsequently the power is transmitted to a sub transmission and changed in speed, and then traveling drive is performed;a turning hydrostatic transmission is actuated so as to control turning of the vehicle; andpressure oil is returned from the turning hydrostatic transmission through an oil cooler to the transmission casing. 16. A vehicle as set forth in claim 11, wherein: power from the engine mounted on vehicle is transmitted to a hydraulic clutch type forward/rearward traveling switching device and a main transmission;subsequently the power is transmitted to a sub transmission and changed in speed, and then traveling drive is performed;a turning hydrostatic transmission is actuated so as to control turning of the vehicle; andpressure oil returning from the turning hydrostatic transmission is supplied through an oil cooler to frictional boards of a hydraulic clutch of the forward/rearward traveling switching device. 17. A vehicle as set forth in claim 11, wherein ends of the divided shafts are shaped so as to engage with each other. 18. A vehicle as set forth in claim 17, wherein the ends of the divided shafts are shaped so as to mesh with each other. 19. A vehicle as set forth in claim 11, wherein the shaft rotatably supporting the track roller supports the track roller through a bearing. 20. A vehicle as set forth in claim 11, wherein the shaft rotatably supporting the track roller is divided along the axial direction of the shaft into a first part, a second part, and a third part, and wherein a first elastic member connects the first part and the second part and a second elastic member connects the second part and the third part.
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