摘要:
A soil cultivating implement has an elongated hollow frame portion that houses an eccentric drive transmission to a row of soil working members mounted on respective upwardly extending shafts journalled on the frame portion. The eccentric drive includes two eccentric discs that are mounted out-of-phase on an upwardly extending driving shaft. The eccentrics are pivoted to radial arms on the member shafts of different alternate soil working members by connecting rods so that adjacent members are oscillated in relatively opposite directions. The shafts are located in a plane that is substantially parallel to the longitudinal center line of the frame portion and to the rear of that line and the rods. Each member has three radial arm supports with respective tines, two of the arms being shorter than a third. It is preferred that the longer arm support of alternate members extend rearwardly in the center of its oscillating path and opposite to the direction of the arm supports of adjacent members. The tines are positioned to work overlapping strips of ground.
摘要:
An implement has two elongated tined carriers that extend transverse to the direction of travel. The carriers are moved through circular orbits around spaced apart driving shafts that extend upwardly. An eccentric for each carrier is journalled to each shaft and includes a disc with encircling ring having support plates that are bolted to the respective carrier. The upper eccentrics extend forwardly from a drive shaft, located between the carriers, to the forward carrier and the lower eccentrics extend rearwardly to the trailing carrier. The carriers are off set relative to one another as well as out-of-phase. An elongated levelling beam is adjustably connected to the forward carrier and a supporting roller is connected to the frame at the rear of the trailing carrier.
摘要:
A cultivator has driven soil working members mounted on corresponding upwardly extending shafts and each member includes a support with a hub secured near the lower end of a respective shaft. The support is formed from flat sheet material which define resilient arms that extend outwardly from the hub. Preferrably, the arms include two spaced apart parallel strips with a holder near the outer ends of the two strips. Fasteners, such as bolts, clamp the arms together and the strips of neighboring arms can be integral with one another. The arms and corresponding tines are thus deflectable in directions perpendicular to the planes of the strips.
摘要:
A cultivating machine has soil working members that are driven to rotate about corresponding upwardly extending shafts. Each member includes a generally horizontal support and a tine or tine-shaped portion at each outer end thereof. The lower straight part of each tine has a chisel that is detachably secured thereto so that a leading edge of the chisel, considering the direction of rotation of the soil working member, is positioned to cut the ground. The chisel can be in the form of a knife or blade or a polygonal member with more than one side being a cutting edge. Also, the chisel can be mounted to extend at an angle to enter the ground. A fastening portion of the chisel can be sleeve-shaped and fitted on the lower active tine part.
摘要:
The invention relates to an articulated tractor with two engines in tandem, particularly an agricultural tractor having a three-point lifting device. A unit having a selectively positioned drawbar adapted to turn about an upright shaft carried between parallel supporting plates is detachably fastened to the lifting device.
摘要:
A mowing machine is connectable to a tractor's lifting hitch and power take-off. A row of rotors is mounted along the length of a laterally extending support that includes an elongated supporting plate pivoted to the main frame. The supporting plate can be an integral plate profiled to have an upwardly extending front and a channel section. Each rotor includes an upwardly extending shaft splined to a gear positioned beneath a hub and a cutting member. The drive to each rotor can be meshed gear wheels readily removable and replaceable as a unit or an elongated driving shaft housed in the channel section. The unit enclosed gear box can house all of the gear wheels or individual gear boxes can be fixed to the supporting plate. The cutting members can be then one or two blades or wires per rotor that are freely pivotable about upwardly extending axes located a substantial distance from the respective shafts which define the axes of rotation of the rotors. The rotors having one cutting member can be balanced by weights on the hubs so that a high rate of rotor rotation is achieved, the cutting members of neighboring rotors positioned to overlap one another. Neighboring rotors can be driven in the same or relative opposite directions and quick release fastenings secure the hubs to their respective shafts.
摘要:
A cultivator or rotary harrow has tined soil working members that are driven about upwardly extending axes. At least one, but preferably substantially all, of the soil working members have an overload release between the driving system and the tines so that when an immovable object is encountered by a tine, the drive to the respective soil working member is temporarily disconnected. The release can be between two parts that are normally spring biased together to maintain the driving engagement to the soil working member. In one form, a pinion gear to the soil working member has an outer toothed portion that can rotate relative to a central portion that is connected to the rotary shaft mounting the soil working member. Ball members in channels formed in the central portion are biased radially into recesses of the toothed portion. In another form, ball members are biased radially to engage the soil working member to its corresponding rotary shaft. Also, the upper end of the rotary shaft can be secured to a pinion by a split ring held in a spacing sleeve. The lower shaft end can be attached to a tine support and normally connected for rotation by a lower part that is fitted in a recessed part in the bottom of the support and spring biased in the recess. Upon a tine striking an immovable object, the parts ride out of engagement, but the parts reconnect upon passing the object.
摘要:
Apparatus removably mounted on a standard model agricultural tractor of a type used principally for pulling various implements and for hauling, and to which agricultural implements cannot usually be advantageously mounted at the front of the tractor, the apparatus including a second steering device at and facing the rear and at a side of the tractor which is linked to the tractor's regular steering device. A seat for the driver may be pivoted 180.degree. to one side for constituting a driver's seat when controlling the second steering device or two seats facing in opposite directions may be provided. A second set of pedals, such as a clutch, accelerator, and brake project from the deck of the attachment in the vicinity of the second steering device and are mechanically linked to the regular control pedals. The implements are mounted on a three-point lifting device extending from the rear of the tractor which can then be driven with facility in reverse by a driver at the second set of controls facing the rear and being disposed on one side of the tractor whereby he can view the implement while it is being operated.
摘要:
A soil cultivating implement has a row of working rotors which are supported by a plurality of elongate, resilient rod-like elements that are arranged to afford a grating immediately to the rear of the rotors. The elments are C-shaped with their convex sides extending in the direction of travel, horizontal lower portions that ride on the ground and upper fastening portions, including coils, that are secured to a beam support. The support, together with elements, are interconnected to the frame via pivoted arms that can be vertically adjusted to change the working depths of the rotors. The elements are positioned at varying distances behind the rotors so that their foremost parts define an imaginary sinusoidal line, when viewed in plan.
摘要:
A rotary cultivator has a row of soil working members mounted on upwardly extending shafts that are geared to a driving shaft extending transverse to the direction of travel. The shafts have soil working tools at their lower ends and transmission gears at their upper ends. Intermediate their ends, the shafts are surrounded by bearings in respective housings. The housings can be disconnected from their supports and the shaft, bearings and housing corresponding to each member can be removed or replaced as a unit. Upon removal, transmission gears are disengaged. The supports for the housings can be bars connected to spaced apart beams of the frame to which gear box - bearing housings are fastened by bolts. Alternatively, an enclosed casing can be formed by an assembly of three spaced apart plates that form an upper gear chamber and a lower trough within which the housings are secured. The rims of the plates can be clamped by bolts and the bearing housings bolted to the lower two plates.