IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0694944
(2010-01-27)
|
등록번호 |
US-8157033
(2012-04-17)
|
발명자
/ 주소 |
- Gilbert, Sylvain
- Paré, Daniel
- Gagnon, Robert
|
출원인 / 주소 |
- Les Produits Gilbert Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
7 |
초록
▼
A steering system for a vehicle having left and right endless tracks, left and right sprocket wheels, a motor and a hydraulic pump includes left and right hydraulic motors mounted to a respective one of the left and right sprocket wheels, a hydraulic circuit connecting the fluid outlet of each hydra
A steering system for a vehicle having left and right endless tracks, left and right sprocket wheels, a motor and a hydraulic pump includes left and right hydraulic motors mounted to a respective one of the left and right sprocket wheels, a hydraulic circuit connecting the fluid outlet of each hydraulic motor to the fluid inlet of the other hydraulic motor, and a steering mechanism for receiving hydraulic pressure from the hydraulic pump and selectively distributing it to the first and second hydraulic motors. The steering mechanism is in fluid communication with the fluid inlets of the left and right hydraulic motors to provide hydraulic pressure in response to first and second steering inputs from a user. An attachment kit includes the steering system.
대표청구항
▼
1. A steering system for a vehicle having left and right endless tracks for propelling the vehicle, left and right sprocket wheels for driving a respective one of the left and right endless tracks, a motor for providing primary motive power to the sprocket wheels and a hydraulic pump, the steering s
1. A steering system for a vehicle having left and right endless tracks for propelling the vehicle, left and right sprocket wheels for driving a respective one of the left and right endless tracks, a motor for providing primary motive power to the sprocket wheels and a hydraulic pump, the steering system comprising: a) left and right hydraulic motors each mounted to a respective one of the left and right sprocket wheels, each hydraulic motor comprising a fluid inlet and a fluid outlet, each hydraulic motor able to provide an additional motive power to the respective one of the left and right sprocket wheel in response to a hydraulic pressure being provided at the fluid inlet of the respective left and right hydraulic motor;b) a hydraulic circuit connecting the fluid outlet of the left hydraulic motor to the fluid inlet of the right hydraulic motor and the fluid outlet of the right hydraulic motor to the fluid inlet of the left hydraulic motor, thereby permitting the flow of hydraulic fluid between the left and right hydraulic motors; andc) a steering mechanism for receiving hydraulic pressure from the hydraulic pump and selectively distributing it to the first and second hydraulic motors, the steering mechanism being in fluid communication with the fluid inlet of the left hydraulic motor to provide the hydraulic pressure in response to a first steering input from a user, the steering mechanism also being in fluid communication with the fluid inlet of the right hydraulic motor to provide a hydraulic pressure in response to a second steering input from a user. 2. The steering system of claim 1, further comprising left and right planetary gear boxes disposed between the left and right hydraulic motors and respective left and right sprocket wheels. 3. The steering system of claim 1, wherein the steering mechanism comprises a power steering unit. 4. The steering system of claim 3, wherein the steering mechanism further comprises a steering wheel coupled to the power steering unit, the power steering unit providing a hydraulic pressure in response a rotation of the steering wheel by the user. 5. The steering system of claim 1, wherein the hydraulic circuit comprises a bypass valve connected across the fluid inlet and the fluid outlet of one of the hydraulic motors. 6. The steering system of claim 1, wherein the vehicle further has a hydraulic vehicle mechanism which is provided hydraulic pressure by the hydraulic pump, the steering system further comprising a priority valve ensuring a sufficient pressure is continually provided to the steering mechanism during operation, the priority valve being in fluid communication between the hydraulic pump and the hydraulic vehicle mechanisms. 7. An endless track attachment kit adaptable to a vehicle after removal of wheels from the vehicle, the vehicle having a motor and a hydraulic pump, the attachment kit comprising: a) left and right endless tracks for propelling the vehicle,b) left and right sprocket wheels for driving a respective one of the left and right endless tracks, the left and right sprocket wheels able to be provided motive power by the motor;c) a frame for supporting the vehicle, the endless tracks being drivable about the frame;d) left and right hydraulic motors each mountable to the frame and a respective one of the left and right sprocket wheels, each hydraulic motor comprising a fluid inlet and a fluid outlet, each hydraulic motor able to provide an additional motive power to the respective one of the left and right sprocket wheel in response to a hydraulic pressure being provided at the fluid inlet of the respective left and right hydraulic motor;e) a hydraulic circuit for connecting the fluid outlet of the left hydraulic motor to the fluid inlet of the right hydraulic motor and the fluid outlet of the right hydraulic motor to the fluid inlet of the left hydraulic motor, thereby permitting the flow of hydraulic fluid between the left and right hydraulic motors; andf) a steering mechanism for receiving hydraulic pressure from the hydraulic pump and selectively distributing it to the first and second hydraulic motors, the steering mechanism comprising a first connecting element for connecting to the fluid inlet of the left hydraulic motor to provide a hydraulic pressure in response to a first steering input from a user, the steering mechanism further comprising a second connecting element for connecting to the fluid inlet of the right hydraulic motor to provide a hydraulic pressure in response to a second steering input from a user. 8. The endless track attachment kit of claim 7, further comprising left and right planetary gear boxes mountable between the left and right hydraulic motors and respective left and right sprocket wheels. 9. The endless track attachment kit of claim 7, wherein the steering mechanism comprises a power steering unit. 10. The endless track attachment kit of claim 9, wherein the steering mechanism further comprises a steering wheel for coupling to the power steering unit, the power steering unit able to provide a hydraulic pressure in response a rotation of the steering wheel by the user. 11. The endless track attachment kit of claim 7, wherein the hydraulic circuit comprises a bypass valve connectable across the fluid inlet and the fluid outlet of one of the hydraulic motors. 12. The steering system of claim 7, wherein the vehicle further has one or more hydraulic vehicle mechanisms which are provided hydraulic pressure by the hydraulic pump, the steering system further comprising a priority valve assembly and for ensuring a sufficient pressure is continually provided to the steering mechanism during operation, the priority valve being connectable in fluid communication between the hydraulic pump and the one or more hydraulic vehicle mechanisms.
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