IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0085330
(2002-02-28)
|
우선권정보 |
AU-200103436 (2001-02-28) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Dickins McLeod Development Pty. Ltd.
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대리인 / 주소 |
Buchalter, Nemer, Fields and Younger
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인용정보 |
피인용 횟수 :
11 인용 특허 :
4 |
초록
▼
A trenching machine comprising a wheeled frame and a first motor mounted on the frame is provided. The first motor drives a digging chain carried on a chain guide extending from the machine. The chain guide is pivotally mounted coaxially with a drive chain drive sprocket. An actuating arm for pivota
A trenching machine comprising a wheeled frame and a first motor mounted on the frame is provided. The first motor drives a digging chain carried on a chain guide extending from the machine. The chain guide is pivotally mounted coaxially with a drive chain drive sprocket. An actuating arm for pivotally moving the chain guide relative to the frame, a lock to lock the chain guide in a desired pivotal position, and a second motor mounted on the frame, are also provided. The second motor drives at least one of the machine wheels for moving the machine along the ground. The second motor is releasably engaged to at least one of the machine wheels.
대표청구항
▼
1. A trenching machine comprising:a wheeled frame,an engine mounted on the frame comprising a first motor means and a second motor means, wherein, the first motor means drives a digging chain carried on a chain guide extending from the machine, the chain guide being pivotally mounted coaxially with
1. A trenching machine comprising:a wheeled frame,an engine mounted on the frame comprising a first motor means and a second motor means, wherein, the first motor means drives a digging chain carried on a chain guide extending from the machine, the chain guide being pivotally mounted coaxially with a drive chain drive sprocket, and wherein the second motor means drives at least one of the machine wheels for moving the machine along the ground, wherein the second motor means is releasably engaged to at least one of the machine wheels and drives at least two substantially coaxial frame wheels that are independently rotatable when disengaged from the second motor means, and rotated in unison when engaged with the second motor means,means for pivotally moving the chain guide relative to the frame, and,locking means to lock the chain guide in a desired pivotal position. 2. A trenching machine according to claim 1, including at least two at least substantially coaxial drive pulleys, and respective at least substantially coaxial driven pulleys, with a belt extending around each respective drive pulley and driven pulley combination. 3. A trenching machine according to claim 2, wherein the drive pulleys are connected to a common shaft, which is rotated by the second motor means, and the driven pulleys are connected to separately rotatable at least substantially coaxial shafts, which drive the respective at least two substantially coaxial frame wheels. 4. A trenching machine according to claim 2, wherein the belts are adjustably tensioned via at least one adjustable tension pulley actuable by a hand-operated lever. 5. A trenching machine according to claim 1, wherein the first motor means and the second motor means are the same motor means. 6. A trenching machine comprising:a wheeled frame,an engine mounted on the frame comprising a first motor means and a second motor means, wherein, the first motor means drives a digging chain carried on a chain guide extending from the machine, the chain guide being pivotally mounted coaxially with a drive sprocket, and wherein the second motor means drives at least one of the machine wheels for moving the machine along the ground, wherein the chain guide is releasably securable in a position relative to the drive chain sprocket enabling fitting and removal of the digging chain from the machine, and further wherein the chain guide is longitudinally slidably mounted on a boom and such that at least one aperture is provided in each of the chain guide and boom in relative positions so the apertures are aligned for receiving a securing pin when the chain guide is moved longitudinally along the boom to a point where the digging chain is relatively loosely fitted about the drive sprocket and the chain guide to enable fitting and removal of the digging chain,means for pivotally moving the chain guide relative to the frame, and,locking means to lock the chain guide in a desired pivotal position. 7. A trenching machine according to claim 6, wherein the chain guide is slidable along the boom from a position where the digging chain is relatively taut about the drive sprocket and chain guide, to a position where the digging chain is relatively loosely fitted about the drive sprocket and chain guide. 8. A trenching machine according to claim 6, comprising a spring to bias the chain guide away from the drive sprocket to thereby tension the digging chain about the drive sprocket and chain guide. 9. A trenching machine according to claim 8, comprising a levering arm actuable by a machine operator for moving the chain guide along the boom against the bias of the spring, to enable the chain guide to be releasably secured to the boom in a position enabling fitting and removal of the digging chain. 10. A trenching machine according to claim 6, wherein the first motor means and the second motor means are the same motor means. 11. A trenching machine comprising:a wheeled frame,an engine mounted on the frame comprising a first motor means and a second motor means, wherein, the first motor means drives a digging chain carried on a chain guide extending from the machine, the chain guide being pivotally mounted coaxially with a drive chain drive sprocket, and wherein the second motor means drives at least one of the machine wheels for moving the machine along the ground, wherein the means for pivotally moving the chain guide relative to the frame comprises an actuating arm, wherein the actuating arm comprises a longitudinally movable screw threaded shaft, which meshes with rotatably mounted helical or bevel gear,means for pivotally moving the chain guide relative to the frame, and,locking means to lock the chain guide in a desired pivotal position. 12. A trenching machine according to claim 11, wherein the actuating arm is pivotally connected between the frame and at least one of the chain guide and a boom upon which the chain guide is slidably mounted. 13. A trenching machine according to claim 11, wherein the actuating arm comprises at least one of: a hydraulic ram; and screw threaded shaft and mating trunnion. 14. A trenching machine according to claim 11, comprising a motor means for rotating the helical or bevel gear to longitudinally move the screw threaded shaft. 15. A trenching machine according to claim 14, wherein the motor means for rotating the helical or bevel gear is an electric motor mounted on the frame. 16. A trenching machine according to claim 11, wherein the first motor means and the second motor means are the same motor means. 17. A trenching machine according to claim 11, wherein the actuating arm is capable of pivotally moving the chain guide relative to the frame to at least three positons, wherein the first position provides the digging chain in a digging position, with the distal end of the chain digging the ground below ground level, the second position provides the chain guide in a digging commencement position, such that the digging chain rests upon the surface of the ground, and the third position provides the chain guide in a non-digging position, wherein the digging chain is clear of the ground surface.
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