Patent ES-349881-A1 (ES)
Title: Improvements in or relating to agricultural vehicles
IPC: A01D90/00
Filed: 1968-01-19
Abstract: A self-propelled agricultural vehicle comprising a wheeled frame, the front wheel or wheels being steerable, includes a crop pick-up mechanism and a conveying mechanism leading to tines which feed the cut crop into a load carrying space, e.g. a dismountable compartment 79. The frame: Longitudinal frame beams 1 support through leaf springs 2 a rear axle 3 on which are mounted ground wheels 4, driven from an engine 33 by a belt transmission contained in casings 53, 54. Inclined beams 5 are connected by transverse beams 6, from which project supports 7 to which a front axle beam 9 is pivotally connected by a pin 8. Ground wheels 13 are mounted on stub-shafts (12), Fig. 3 (not shown), formed at the ends of two support shafts 11 which are rotatably mounted in support sleeves 10 fixed to the axle beam 9. The wheels 13 comprise hubs (15), Figs. 3-4 (not shown), mounting rims (14), a brake mechanism being mounted on each hub (15). Hydraulic motors 21 drive the wheels 13 through pinions (22) meshing with a toothed ring (20). A horizontal U-shaped ribbed beam 25 is fastened to a wall 26, plates 28 and channel beams 29 reinforcing the connection a floor plate 30 is mounted on the beam 25 carrying a hood 31, supporting a driving seat 32 and the transversely mounted engine 33, a detachable cab 34 being provided. The feeding mechanism 38 is driven from the engine 33 through gear wheels 41 mounted on a horizontal shaft 42 and meshing with a pair of gear wheels 39 mounted on aligned stub-shafts 40. A tine support shaft 43 conecting the two wheels 39 carries a row of projecting tines 44, arms 45 of which are pivotally connected by links 46 to supports 47 mounted on a beam 48 above an opening 49 in the wall 26. The tips of the tines follow a path 51 across a curved plate 52, pushing crop through slots formed by a plurality of profiled strips 50, and through the opening 49. The pick-up Mechanism is suspended from supports 60 projecting from the beams 5. Beams 62 are pivotable about a shaft 61 journalled in the supports 60. Hydraulic lifting cylinder assemblies 77 connect lugs 78, mounted on a beam 27 connected to the frame beams 1, and lugs 76 mounted on the beams 62, allowing adjustment of the angle and height of the pick-up mechanism in relation to the ground. Vertical plates 63 fixed to the ends of the beams 62 rotatably support a shaft 64, and an endless conveyer belt 66 is supported by roller drums 65 secured to the shafts 61, 64. A further shaft 67 journalled in the plates 63 supports a drum 69 fitted with rows of tines 68, a plurality of strip-form brackets 70 interconnected by transverse beams 71 defining slots between which the tines move during rotation. A collector 72 connected to the plates 63 comprises a bottom plate and a cutter bar 73, archimedean screw conveyers 74, Fig. 6 (not shown), leading cut crop transversely inwards to be collected by the tined drum 69. The Load Carrying Compartment 79 comprises a detachable unit whose front wall abuts against the wall 26. The floor is formed as a conveyer comprising beams 58 secured to endless chains 57 mounted on sprockets 56 carried by driven shafts 55. Crop is discharged through a door 80, Fig. 7. For dismounting, four beams are pinned at their upper ends to lugs 82 mounted on the compartment 79. Hydraulic jacks 81 mounted on the compartment 79 are operated to bear against the frame beams 1, lifting the compartment 79, and brackets 85 on the beams 84 are locked to beams 87, which are rigid with the compartment 79, by pins 86. On releasing the oil pressure, tension springs 88 withdraw the piston rods of the jacks 81 into their cylinders and the vehicle may be driven forwards to leave the compartment 79 supported on the beams 84. Crop Drying Unit, Fig. 8: A frame 89 supports three drums 90-92 which are rotated by frictional engagement with rollers 94A carried on a driven shaft 93A. Crop is charged into the drum 90 by an elevator 94, a fan 96 forcing a current of heated air through the system in conjunction with a second fan or crop-chopping member 97. The drums 90-92 are provided with inclined internal baffles 98, and are connected in series by ducts 100, 101 so that crop passing through follows a sinuous path before emerging from an outlet 102 after drying. An alternative dismountable crop drying unit, Figs. 10-11 (not shown), comprises a single drum (103) rotated by frictional engagement with rollers (110) mounted on driven shafts (109). The unit is dismounted by means of packs in the same way as the compartment 79, or alternatively by longitudinal movement to or from a platform positioned adjacent to the frame by means of rollers (105), (108). A Threshing Mechanism (114), Fig. 12 (not shown), may be mounted on the frame, being removable horizontally by means of rollers (115). A reel (116) is mounted above the cutter bar 73 and an endless conveyer in an elevator housing (117) leads to the threshing and cleaning portion of the mechanism (114). Threshed material accumulates in a grain tank (119).