DE1482070A1 - Disc mower for attachment to tractors - Google Patents

Description

U82070

THE DIRECTION

Rieden, November 11, 1965

GERHARD KRÜGER company, machine factory, Rieden No. 3 Krs. Purchase

Disc mower for attachment to tractors

The invention relates to a rotary disc, which is intended as an attachment to the three-point hitch of a tractor, and as such can be mounted and during road travel is preferably laterally foldable quickly and easily and which in faba drive M and road driving, the additional coupling of harvesting machines and trailers, for example v.on loading wagons , permitted.

Disc mowers are already available in various designs known.

There are disc mowers whose mower discs are essentially in Rotate horizontal plane. The drive takes place here from above via hanging shafts. The flying rotating mower discs make due to the large distance between the disks connecting and the drive elements in the known designs the supporting boom and the mower discs are strong and bulky Shaft bearings required, one version of this mower

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works is constructed in such a way that above the counter-rotating Mower discs with these firmly connected drums are located, their diameter BEZW. whose corner dimensions are only slightly smaller than the mower disc diameter. With these drums you can achieve that the mower discs rotating in opposite directions between the mowed material convey through the two drums. The crop then remains behind the mower as a swath.

Mowing and swathing in one operation, however, causes such a high power requirement of the machine that only relatively powerful tractors are suitable for use. The "swathing" operation can be used because of the Harvesting machines, such as loading wagons, can be dispensed with. These machines pick up the crop cleanly when it is uniform is spread out. A mower that spreads the crop evenly would be sufficient. This would mean quick drying in the field.

Some of the well-known disc mowers are used when driving on the road pivoted horizontally to the rear, approximately parallel to the vehicle's longitudinal axis or approximately flush with it. A trailer on the tractor it is impossible to hang.

The invention has set itself the task of a disc mower create that is light and flat so that it does not hinder in the road travel position when it is similar to a cutter bar on the side Vehicle is unfolded. Due to the uncomplicated construction, and restriction to the essential functions and individual parts is intended to ensure that the low power requirements of the Device allows the use of less powerful tractors. The invention is also intended to make it possible for both roads and Harvesting vehicles carried along while mowing, even when driving through the fields can be, which is especially interesting for harvesting green fodder and the like.

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H82070

A proposed embodiment of a mower according to the invention is outlined in FIGS.

Fig. 1 shows the device from behind in the working position, the Tractor is indicated.

Fig. 2 shows the device in the working position from above.

Fig. 3 shows the device in the working position seen from the tractor.

Fig. 4 shows a section through the device, compared to the others Sketches slightly enlarged with analogous representation the drive element and the storage.

Towards the trailer frame (1) is on the levers of a three-point coupling of a tractor (2, 3, 4, 5), which are represented symbolically easily detachable attached in a known manner. In a point (6) fixed on the trailer frame (1), an extension arm (7) is attached so that it can be swiveled, which at its free end, also attached in an articulated manner, carries the actual mower (8). This essentially consists from one or more mower disks (9), the common working width of which advantageously corresponds approximately to that of an attached harvesting vehicle.

The discs (9) consist for example of substantially flat discs which may be crimped in order to increase the inherent rigidity movably attached with in the disc plane, easily replaceable m cash knives (lo), which are provided as a result of the relatively high wheel speed by centrifugal force radially outwardly . The device is driven by a cardan shaft (11) from the PTO shaft of the tractor via a wheel (12), a transmission (13) to a wheel (14). The wheel (12) is firmly attached to a shaft (15) which is mounted on the cantilever arm (7) and carries spline profiles on both free ends for coupling with cardan shafts. The tractor PTO shaft is connected to the shaft stub that has been trimmed to the tractor via the cardan shaft (11), and a cardan shaft is connected to the stub facing away from the tractor to drive a harvesting machine that may be carried along. The wheel (14) is

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fixedly arranged on the free end of a shaft of an angular gear (16), which is additionally mounted in a bearing block (17) on the gear box (18) of the mower (8). The bearing block (17) carries bearing points on both sides where the fork-shaped extension arm (7) at the corresponding end articulates in bearing eyes is attached. Since the entire mower (8) can thus be pivoted around the axis of the wheel (14), the mower can be unfolded, without changing the tension of the transmission (13), which may be formed by a chain, belt or the like. A second The shaft stub of the angular gear (16) protrudes into the gear box (18) of the mower (8) and thus possibly drives via the transmission (19), which is formed, for example, by a chain, belt or the like. Wheels (2o), which are fixed with shafts that are advantageously supported on both sides (21) are connected. The shafts (21) pierce the gear box (18) and carry the mower discs (9) firmly connected to them on their free ends. Rotate to create a scattering effect the mower discs (9) in a plane that is slightly inclined against the direction of travel. However, the angle of attack is allowed in the interests of a uniform cutting height across the entire working width, they are not too large. At diagonally against the Mower discs (9) adjusted in the direction of travel, the gear box (18) can be arranged on the bottom side, that is, under the mower discs (9). On its underside, the gear box (18) is designed in the shape of a runner, or guided sliding on the ground. The skids could also be assigned leading to the mower, including a floor guide by means of roles would be conceivable. This construction allows an extremely low overall height, that is to say a lightweight construction of the mower. Instead of the transmission (19), which is advantageously formed by a narrow chain, can bevel or spur gear ratios are also provided, provided that the goal of maintaining an extremely flat overall height is achieved can be. A version of the drive of a machine according to the invention provides, instead of the PTO shaft, articulated

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shaft (11) and transmission (13) driven angular gear (16) to use a pressure medium-driven motor, such as a hydraulic motor, which in turn is connected to the pressure medium system of the Tractor is connected. In particular farm tractors with one suitable pressure medium systems are already on the market.

The cutting height of the crop can be increased by extending the three-point top link (2) can be varied, i.e. by changing the angle of attack accordingly.

The compensation of uneven floors, also the opening of the Mower from field travel to road travel position can be adjusted in length by means of infinitely variable or narrow steps, in articulation points attached pendulum struts (22, 23) can be achieved, one of which is not locked in the field travel position. It would also be conceivable Unhook one of the two pendulum struts (22, 23) for road travel from one of their pivot points and the folded-up mower to be fixed in the road travel position using suitable elements (for example by hanging on a chain, locking by means of Socket pin on a rail or the like.), While the other of the two pendulum struts can be locked for driving on the road and when driving in the fields is continuously adjustable in length in a narrow area.

A deflector bar (24) is intended as an accident protection, respectively. he prevents the rotating mower discs hitting larger obstacles.

Should measures be required that prevent the mower discs from being turned on even when the PTO is switched on in the road travel position can revolve, it can be provided that the cantilever arm (7) with its end facing away from the hinge point (6) does not aligned with the axis of the wheel (IM) articulated with the mower (8) connected is. When the mower is opened, the tension in the transmission (13) is released.

Protection claims - 6 -

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Claims (6)

O L · U / U claims to protection 1. Scheibenmähwerk as an attachment to the three-point coupling, or any other suitable coupling device of a tractor, in particular agricultural tractors, which is expanded as such quickly and easily mountable and for road travel, for example, the side manually or by means of a suitable device and which both arable drive as well as for road travel, the coupling of harvesting machines, such as loading wagons permitted, characterized in that one or more discs (9) which is comparable, for example mower blades CIo) uniformly over the circumference bear shares W, and their shared workspace preferably about that of a harvesting machine, for example, corresponds loading wagons, against the direction of travel are slightly inclined and are optionally driven in opposite directions or rotating in the same direction by elements that are assigned to the mower discs on the side facing the ground and in a common gear box (18), housing or the like are summarized, which is designed on its underside in the shape of a runner, or which is provided with runners or rollers that also lead the mower to guide the ground, and that the cutting height of the crop can be varied individually by adjusting the setting angle of the mower. fc ^ 2_ disc mower according to claim 1, characterized in that the discs (9) and bearing shafts associated with them (21) are driven by transmissions (19) such as chain or belt, or conical or Helical gear. 3. Disc mower according to claims 1 and 2, characterized in that the elements driving the mower disc shafts (21) are driven via a tractor PTO shaft and transmission (13) and via an angular gear (16). - 7 '90984 2/0048. BAD OF «e» NAL U82070 4. Disc mower according to Claims 1 to 3, characterized in that the mower (8) is pivotable about the axis of its drive shaft protruding from an angular gear (16) which carries a drive wheel (14) on its free end which is driven by a transmission (13) which is coupled to the tractor PTO shaft. 5. Disc mower according to claims 1 to 3, characterized in that for the purpose of releasing the tension of the transmission when the mower is opened, the gear box (18) with the mower discs (9) cannot pivot about the axis of its drive shaft protruding from an angular gear (16) . 6. Disc mower according to claims 1 and 2, characterized in that instead of an angular gear driven via a tractor PTO shaft, a pressure medium-driven motor (for example a hydraulic motor), which is preferably connected to the pressure medium system of the tractor, the gear elements (19) arranged in a gear box (18) , 2o, 21) drives. Documents considered: ^ German Auslegeschrift 1 115 5o5
German Auslegeschrift 1 IHl 828
German interpretation document 1 172 463
Company brochure of the company Zweegers, Holland. GERHARD KRÜGER MASCHINENFABRIK (Gerhard Krüger) 9 O 98 42 / 0- (K 8