IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0590333
(1984-03-16)
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발명자
/ 주소 |
- Guignard, Paul C.
- Ream, Michael D.
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출원인 / 주소 |
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대리인 / 주소 |
Phillips, Moore, Lempio & Finley
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인용정보 |
피인용 횟수 :
6 인용 특허 :
1 |
초록
▼
A steering and drive system for a four-wheeled vehicle (10) with two non-steering and non-driving wheels (16, 17) at one end of the vehicle, in which the system includes two wheel brackets (23, 32) at the other end of the vehicle, each wheel bracket having a motor-driven wheel (18, 19) mounted there
A steering and drive system for a four-wheeled vehicle (10) with two non-steering and non-driving wheels (16, 17) at one end of the vehicle, in which the system includes two wheel brackets (23, 32) at the other end of the vehicle, each wheel bracket having a motor-driven wheel (18, 19) mounted thereon, and each wheel bracket being mounted on the vehicle for turning about a vertical axis which passes through the angle of rotation of the wheel thereon, and a double-ended hydraulic cylinder (35) having a housing (36) fixed to the frame (15) of the vehicle and a reciprocating piston (41) whose ends are connected by links (47, 53) to the two wheel brackets to provide a tie between the wheels and Ackerman steering.
대표청구항
▼
1. A steering and drive system for a wheeled vehicle having a generally horizontal frame and a pair of non-steering and non-driving wheels at one end of said frame, said steering and drive system comprising: a pair of wheel brackets at the other end of said frame, a hydraulic motor mounted on ea
1. A steering and drive system for a wheeled vehicle having a generally horizontal frame and a pair of non-steering and non-driving wheels at one end of said frame, said steering and drive system comprising: a pair of wheel brackets at the other end of said frame, a hydraulic motor mounted on each wheel bracket, a steering wheel on each wheel bracket and rotatably driven about a horizontal axis by the motor on that wheel bracket, means for mounting said wheel brackets to said frame for pivoting of said wheel brackets about spaced apart vertical axes, with the vertical axis of each wheel bracket passing through the horizontal axis of rotation of the wheel mounted thereon, a double-ended hydraulic cylinder having a housing fixed to said frame at a horizontal level above said motors and a piston extending horizontally from each end of said housing, a first link pivotally connected at one end thereof to one end of said piston and pivotally connected at the other end thereof to one of said wheel brackets at a location thereon horizontally offset from the vertical axis of that wheel bracket, a second link pivotally connected at one end thereof to the other end of said piston and pivotally connectable at the other end thereof to the other of said wheel brackets at a location thereon horizontally offset from the vertical axis of that wheel bracket. 2. A steering and drive system as set forth in claim 1, wherein said piston of said hydraulic cylinder and said links are all above the levels of said wheel brackets. 3. A steering and drive system for a wheeled vehicle having a generally horizontal frame and a pair of non-steering and non-driving wheels at one end of said frame, said steering and drive system comprising: a pair of L-shaped wheel brackets at the other end of said frame, each said bracket having an upper horizontal flange and a vertical flange depending therefrom, a motor mounted on the vertical flange of each wheel bracket, a steering wheel on each wheel bracket and rotatably driven about a horizontal axis by the motor on that wheel bracket, means including an upstanding spindle on the horizontal flange of each wheel bracket for mounting and wheel brackets to said frame for pivoting of said wheel brackets about spaced apart vertical axes coaxial with the vertical axes of said spindles, with the vertical axis of each wheel bracket passing through the horizontal axis of rotation of the wheel mounted thereon, a double-ended hydraulic cylinder having a housing fixed to said frame and a piston extending horizontally from each end of said housing, a first link pivotally connected at one end thereof to one end of said piston and pivotally connected at the other end thereof to one of said wheel brackets at a location thereon horizontally offset from the vertical axis of that wheel bracket, a second link pivotally connected at one end thereof to the other end of said piston and pivotally connected at the other end thereof to the other of said wheel brackets at a location thereon horizontally offset from the vertical axis of that wheel bracket, each of said wheel brackets including an upstanding pin on the horizontal flange thereof, each pin being horizontally spaced from the spindle on the same wheel bracket, and said other ends of each of said first and second links being pivotally connected one each to one of said upstanding pins. 4. A steering and drive system as set forth in claim 3, wherein the vertical axes of the pin and spindle on each wheel bracket are in a plane which includes the center of the wheel mounted on that bracket, and the horizontal axis of rotation of that wheel is perpendicular to said plane, and wherein said piston is parallel to and horizontally offset from a vertical plane which includes the vertical axes of the two spindles on said wheel brackets. 5. A steering and drive system as set forth in claim 4, wherein said motors on said wheel brackets are hydraulic motors.
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