CZ2012959A3 - Semi-mounted or towed agricultural soil working machine or seed drill - Google Patents

Abstract

The semi-mounted or trailed agricultural soil tillage or sowing machine comprises a frame (2) to which a traction part (3) and at least one soil tillage means (4) are attached. The frame (2) is provided with at least one sprung transport axle (1) which is designed as a crank.

Description

Semi - mounted or towed agricultural machinery for tillage or sowing

Field of technology

The invention relates to a semi-mounted or trailed agricultural machine for tillage or sowing, in particular the connection of its frame to at least one transport axle.

Prior art

Semi-mounted and trailed agricultural machines for tillage and sowing are currently known from the prior art, which use only fixed axles for transport from the workplace to the storage location. These have a number of disadvantages. During its use, the shocks generated during the operation of the machine, especially during transport, are transmitted to the machine structure. The entire construction of the machine is thus significantly dynamically loaded. These forces are extreme, and are several times greater than under static load. For this reason, the entire construction of the machine must be properly dimensioned, more precisely oversized, to withstand this load. Therefore, the whole structure, especially the frame of the machine must be relatively massive, therefore it is relatively heavy, which is both very expensive and at the same time brings increased costs in connection with machine operation, because the towing device, which is usually a tractor, must be properly dimensioned and it has a higher fuel consumption due to the fact that it pulls a heavy machine.

The object of the invention is to design a semi-mounted or trailed agricultural machine for tillage or sowing, which will have a significantly lighter construction, and will therefore not only be cheaper to manufacture, but also cheaper to operate.

The essence of the invention

These shortcomings are largely eliminated and the objects of the invention are fulfilled by a semi-mounted or trailed agricultural tillage or sowing machine comprising a frame to which a trailed part and at least one tillage or sowing means are attached, the essence of which according to the invention is that the frame is fitted with at least one sprung transport axle. This brings the possibility of a significant reduction in the dimensioning of the strength parameters of the whole machine, as a result of which the weight of the machine is reduced and thanks to the damping of the machine bouncing during its movement over unevenness, its properties during transport are improved.

It is advantageous if the sprung transport axle comprises at least one spring unit which is arranged as a crank. Such a design is practically maintenance-free, technically simple and relatively inexpensive.

In the most preferred embodiment, the sprung transport axle comprises a hollow beam, at the ends of which spring units are mounted, which consist of rubber bushings in which the crank axles are mounted. Such a design is very simple, cheap and at the same time fully functional.

It is advantageous if the spring unit comprises resilient rubber elements which operate as torsions. Their advantage is their almost unlimited service life and damping effect.

The sprung transport axle is preferably arranged at the rear of the frame. This is advantageous with regard to the overall simplicity of the construction of the entire machine.

In a preferred embodiment, the sprung transport axle further comprises at least two wheels, each of these wheels being provided with a separate spring unit.

It is also advantageous if the sprung transport axle comprises a brake. This makes it possible to increase the safety of transporting the entire machine as it moves along normal roads.

The frame further preferably comprises at least one lifting means for the sprung transport axle, which serves to lift it during operation of the machine and to tilt it during transport of the agricultural machine for tillage or sowing. Preferably, this lifting means is a hydraulically mounted piston mounted simultaneously on the main frame of the machine and on the tilting frame carrying the entire sprung axle.

The main advantage of a semi-mounted or trailed agricultural machine for tillage or sowing, according to the invention, is that thanks to the use of a sprung transport axle which substantially reduces the action of dynamic stress, it is possible to significantly reduce the strength dimensioning of the whole machine structure, especially its frame. This brings other advantages, which are especially lower weight of the load-bearing structure and the associated lower price, longer service life of the whole machine, higher resistance to fatigue failure, better driving characteristics when transporting the machine, such as increased adhesion when moving on uneven surfaces, better safety braking parameters, such as shorter braking distances as well as road load reduction.

Overview of pictures in the drawing

The invention will be further elucidated by means of the drawing, in which Fig. 1 shows a view of the overall arrangement of a semi-mounted or trailed agricultural machine for tillage or sowing and Fig. 2 shows a detailed view of a sprung transport axle.

Example of an embodiment of the invention

The semi-mounted or trailed agricultural machine (Fig. 1) for tillage or sowing comprises a frame 2 to which the trailed part 3 and a number of means 4 for tillage or sowing are attached. The frame 2 is provided with at least one sprung transport axle 1.

The sprung transport axle 7 (Fig. 2) comprises a hollow beam 10, in the ends 12,13 of which two crank spring units 8 are accommodated, which consist of rubber bushings in which the crank axles 11 are accommodated. The rubber housings of the spring units 8 comprise resilient rubber elements that are arranged as torsional.

The sprung transport axle 1 is arranged on the rear part 5 of the frame 2, further comprising at least two wheels 6,7, each of these wheels 6,7 being provided with a separate spring unit 8 on which it is suspended.

The sprung transport axle 1 contains a brake.

The frame 2 further comprises at least one lifting means 9 of the sprung transport axle 1.

Industrial applicability

The semi-mounted or trailed agricultural machine for tillage or sowing with a sprung transport axle according to the invention can be used for more efficient and safer transport of the machine to the place of its work and back.

List of reference marks Suspended transport axle Frame Towing device Mowing or sowing device Rear part Wheel I Wheel II Spring unit Lifting device Hollow beam Crank half-axle End I End II

Claims (9)

Patent claims Semi-mounted or trailed agricultural tillage or sowing machine comprising a frame (2) to which a traction part (3) and at least one tillage or sowing means (4) is attached, characterized in that the frame (2) is a provided with at least one suspension transport axle (1). Semi-mounted or trailed agricultural machine according to claim 1, characterized in that the suspension transport axle (1) comprises at least one spring unit (8). Semi-mounted or trailed agricultural machine according to claim 1, characterized in that the spring unit (8) is configured as a crank. Semi-mounted or trailed agricultural machine according to one of the preceding claims, characterized in that the suspension transport axle (1) comprises a hollow beam (10), in whose ends (12, 13) the spring units (8), which consist of rubber bushings in which the crankshafts (11) are mounted. Semi-mounted or trailed agricultural machine according to one of Claims 2 to 4, characterized in that the spring unit (8) comprises resilient rubber elements. Semi-mounted or trailed agricultural machine according to one of the preceding claims, characterized in that the suspension transport axle (1) is arranged on the rear part (5) of the frame (2). Semi-mounted or trailed agricultural machine according to any one of the preceding claims, characterized in that the suspension transport axle (1) further comprises at least two wheels (6,7), each of said wheels (6,7) being provided with a separate suspension spring. unit (8). Semi-mounted or trailed agricultural machine according to one of the preceding claims, characterized in that the suspension transport axle (1) comprises a brake. Semi-mounted or trailed agricultural machine according to one of the preceding claims, characterized in that the frame (2) further comprises at least one lifting means (9) of the suspension transport axle (1).