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A power take-off shaft driven combination machine for ground preparation which can be coupled to a tractor vehicle is equipped, with a view to a short, light and constructionally simple construction, with levelling tools 107 arranged directly behind the tractor vehicle 38 which level the wheel track

A power take-off shaft driven combination machine for ground preparation which can be coupled to a tractor vehicle is equipped, with a view to a short, light and constructionally simple construction, with levelling tools 107 arranged directly behind the tractor vehicle 38 which level the wheel tracks left by the tractor vehicle 38, with a rotor-tiller 20 arranged between the levelling tools which is driven via the power take-off shaft in a direction of rotation U which sustains the direction of travel F and which throws the excavated earth against a movable rake 24 or against a flexibly arranged mat 31 and with a vertically adjustable crushing roller 202 arranged therebehind which has a peripherally at least substantially closed roller body 203 with peripherally directed rows of teeth 204 and scrapers 207 arranged between and spaced apart from the rows of teeth. Tyne elements 214 which resiliently engage in the ground are arranged on the scraper 204 behind the crushing roller 201 and break up the cakes of earth peeled from the crushing roller 202 by the scrapers 207.

대표청구항 ▼

A power take-off soil tilling machine having a frame that can be coupled, in a vertically adjustable manner by a three-point suspension to a pulling vehicle carrying the soil tilling machine, and having stationary soil tilling tools that are exchangeably disposed in the driving direction on said fra

A power take-off soil tilling machine having a frame that can be coupled, in a vertically adjustable manner by a three-point suspension to a pulling vehicle carrying the soil tilling machine, and having stationary soil tilling tools that are exchangeably disposed in the driving direction on said frame in front of a power take-off-driven pronged rotor-tiller, and having a cover disposed behind the pronged rotor-tiller which directs piled-up soil to the soil surface, as well as having a crumbler roller that is vertically adjustably arranged behind the cover and has an essentially closed circumferential surface and toothed elements arranged in rows in circumferential direction, characterized in that vertically adjustable levelling tools are arranged as stationary soil tilling tools on both side of the track grooves left by the pulling vehicle, with said leveling tools seeking to push soil into the track grooves by means of leveling plates that are aligned essentially parallel to the vertical axis of the machine, are diagonal with respect to the driving direction and with their rear end pieces point into the track grooves; that the pronged rotor-tiller is arranged at the frame by means of rotor gearing fixed to the frame, can be driven in circumferential direction in the driving direction, and has several groups of teeth each comprising six teeth which are arranged somewhat displaced from each other in the peripheral direction and the teeth of which each have a striker edge of wedge-like cross-section which is directed in the direction of rotation and of which are in each case arranged in a separate radial plane of the rotor-tiller with the first three and the last three teeth of a group of teeth being arranged in each case in a helical line with an angle of approximately 120° between sequential teeth and with a third and fourth teeth of a group of teeth lying diametrically opposite to one another as seen in the axial direction of the rotor-tiller; that the cover is movably and with mutually movable parts arranged behind the pronged rotor; that the crumbler roller is disposed at the frame on joints by means of a subframe; and that strippers are arranged between toothed elements at a distance from said elements, with combing means disposed behind said strippers by means of springy ends for reaching into the soil surface.