Carrier beam unit for agricultural implements |
|||||||
| 申请号 | US3593805D | 申请日 | 1968-05-09 | 公开(公告)号 | US3593805A | 公开(公告)日 | 1971-07-20 |
| 申请人 | RAU OHG MASCHF; | 发明人 | RAU WILLY; | ||||
| 摘要 | A carrier beam for carrying and loading agricultural implements and having a great length extending transverse to the direction of travel of a tractor to which it is connected is divided into several parts which are rigidly connected to each other in the working position so as to have a maximum working length and the outer parts of which may be pivoted toward each other to reduce this length at least to a size not exceeding the maximum width of a vehicle permitted to travel on a public road. | ||||||
| 权利要求 | 1. A carrier beam unit for connecting agricultural implements to a tool carrier frame of a tractor comprising a first beam having opposite ends and being adapted to be connected to the tool carrier frame extending in a substantially horizontal plane and transversely to the direction of movement of the tractor; two swing beams, each comprising an inner beam part and an outer beam part; two pivot means for pivotally connecting each of the two beam parts of one of said two swing beams individually to one of the opposite ends of said first beam and each of the two beam parts of the other of the two swing beams individually to the other of said opposite ends movable from a working position in which the two beam parts of each swing beam extend longitudinally substantially aligned with each other substantially in the direction of said first beam tiltable with respect thereto with the inner part of each swing beam projecting inwardly from the respective end of said first beam and the outer part of each swing beam projecting outwardly from the respective end, and a second position in which said outer part of each swing beam is pivoted through an angle of at least 90* about the pivot axis of the respective pivot means; and means for locking said two beam parts of each swing beam to each other in said working position. 2. A carrier beam unit as defined in claim 1, further comprising means for locking said outer beam parts in said second position to which they are pivoted from said working position around said axis of said pivot means. 3. A carrier beam unit as defined in claim 1, wherein said outer beam parts are pivotable from said first to said second position and vice versa at an angle of about 180* around said axis of said pivot means, and further comprising means for supporting said outer beam parts in said second position on said first beam. 4. A carrier beam unit as defined in claim 1, further comprising means for locking said inner beam parts in said first position to said first beam. 5. A carrier beam unit as defined in claim 1, further comprising means on said first beam for laterally guiding said swing beams and for limiting the extent of the pivoting movement thereof. 6. A carrier beam unit as defined in claim 1, further comprising a pair of guide straps secured to each inner beam part and engaging upon the opposite sides of said first beam and adapted to guide one of said swing beams within a vertical plane relative to said first beam, and means on said guide straps for limiting the extent of the pivoting movement of said inner beam parts relative to said first beam. 7. A carrier beam unit as defined in claim 6, wherein said means for limiting the extent of the pivoting movement of said inner beam parts are formed by bores in said guide straps and by pins inserted into said bores and cooperating with said first beam for limiting the extent of the pivoting movement of said inner beam parts relative to said first beam. 8. A carrier beam unit as defined in claim 1, wherein adjacent ends of the two parts of each swing beam abut against each other when said swing beams are in said working position, and wherein the pivot axes of said pivot means are arranged in such a manner to permit upward pivoting of said outer part through said angle to said second position. 9. A carrier beam unit as defined in claim 8 wherein said first beam and said swing beams are located within a substantially common plane and said swing beams in said working position are located below said central beam, said pivot means having axes extending at right angles to said common plane. 10. A carrier beam unit as defined in claim 8, wherein said beam parts of each swing beam are provided near their adjacent ends with upwardly projecting arms, both of said arms being pivotably connected by said pivot means to said first beam, said beam parts having such a size that in said working position their adjacent end surfaces abut on each other in a manner so as to support each other and form a substantially rigid unit. 11. A carrier beam unit as defined in claim 10, wherein at least the free ends of said arms of said two beam parts are inclined toward each other, said pivot means connecting said arms to the ends of said first beam so as to be pivotable about a common axis located above the abutting end surfaces of said beam parts when said swing beams are in said working position. 12. A carrier beam unit as defined in claim 10, wherein the ends of said beam parts facing each other are provided with flanges forming said abutting end surfaces supporting each other in said working position, each of said flanges having a slot extending substantially in the longitudinal direction of said beam parts and in alignment with the slot in the adjacent flange, said locking means comprising a screw and a nut thereon, and means for pivotably connecting said screw to one of said beam parts so as to be pivotable into said slots when said nut is loosened, whereupon said nut may be tightened to secure said beam parts rigidly to each other. 13. A carrier beam unit as defined in claim 8, wherein said locking means comprise a pawl member between said two beam parts of each swing beam, means for pivotably connecting said pawl member to one of said beam parts, and means for bracing said pawl member on the other beam part when said swing beam is in said working position. 14. A carrier beam unit as defined in claim 13, wherein said beam parts of each swing beam are provided near their adjacent ends with arms which are upwardly inclined in opposite directions and are pivotably connected by said pivot means to said first beam at their point of intersection, the arm on one of said beam parts extending beyond said pivot means, said pawl member being adapted to be braced between said extension and the other beam part. |
||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈