NL8503230A - Bulk crop pick-up machine - chops material between fixed and rotary knives past which tines travel - Google Patents

Abstract

The machine picks up material in bulk lying loose on the ground, such as hay, straw, green fodder etc. having a rotary driven shaft with transverse tines in different planes. The fine tips are clear of the ground at the lowermost points on their paths. Guide plates extend between adjacent sets of tines and at least over the ascending portions of their paths, these being curved about a point to the side of the shaft at which tangential horizontal plates join onto them. The material is chopped between fixed knives (21) and others (24) on a transverse rotary shaft. The tips of the tines (5-8) travel past the knives, to deliver the material to them.

Description

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Sensor for loose or not very cohesive bulk goods

The invention relates to a device for receiving ground-lying, loose or not very cohesive bulk material, for example hay, green fodder, straw, grass and the like, which device comprises: a rotating drive shaft, on which circumferentially in the transverse direction sets, each arranged in one plane, the ends of which have some distance from the ground at the lowest point of their path during rotation of the shaft; at least over the ascending part of the webs, guide plates of curved shape, the centers of curvature of which are on the side of the shaft, are arranged between adjacent sets of pins, to each of which guide plates a plate section extending approximately tangentially and in at least approximately horizontal direction.

Such a device is known in many embodiments and is particularly intended for use in conjunction with a pick-up.

It is often desirable, for example, to form the straw bales beforehand to reduce the straw so that the culms 20 become somewhat shorter. Dutch patent application 264,694 discloses a harvesting wagon in which a transport member is present for further transporting the bulk goods, whereby the transported bulk goods are reduced by sawing. Since, according to this known technique, the recording and cutting take place in two separate steps, a device intended for this purpose is relatively complicated in construction and requires quite a lot of energy.

To avoid this, the invention provides an apparatus of the type described, which is characterized by means for cutting the bulk, which means comprise: at least one fixed knife; and a second rotary drivable shaft, on which circumferentially transverse sets each blades arranged in one plane are mounted, the cutting edges of which cooperate with a cutting edge of the fixed blades, wherein the path of the ends of the pins extends beyond the cutting means, such that the bulk material absorbed by the pins is introduced into the cutting means by those pins.

The pick-up and cutting take place in one pass, using co-operating cutting edges, so that the bulk material taken up is, as it were, cut into smaller parts.

In order to allow the cutting operation to take place as well as possible together with the feed, that variant is preferred, according to which the shafts can be rotated in the opposite direction. In order for the cutting operation to take place as effectively as possible and with a minimal risk of malfunctions, use can be made of cutting edges with corrugated or serrated shape.

The invention will now be elucidated with reference to the annexed drawing. This shows a schematic representation of a device 1 according to the invention, for picking up loose, loose or not very cohesive bulk material lying on the ground. This device 1 comprises a drivable shaft 4 rotatable by drive means generally indicated by 3, on which circumferential transverse sets each have pins 5, 6, 7, 8 arranged in one plane, the ends of which are rotated during rotation of the shaft 4. the lowest point of their track some distance from the ground 2. Furthermore, the device 1 has between adjacent sets of pins 5, 6, 6, 7; 7, 8, at least over the ascending portion of the webs thereof, guide plates 9, 10, 11, of substantially cylindrical shape, the axis 4 forming the center of curvature axis, the guide plates 9, 10, 11 being part of a sheet metal cap 12, wherein pins 5, 6, 7, 8 are movable through slots 13, 14, 15, 16.

Flat parts 17, 18, 19 are tangentially and in substantially horizontal direction to the more or less cylindrical plates 9, 10, 11. Above this are cutting means 20, comprising a number of fixed knives 21, and a shaft 22 rotatable by the driving means 3, on which a number of discs 23 with cutting edges 24 extending substantially in radial direction are arranged, which cutting edges 24 cooperate with the fixed knife 21, which in this embodiment has a triangular shape with three cutting edges, such that this knife can be adjusted by an appropriate angle after blunting of one cutting edge, so that a subsequent cutting edge can be used.

In this case, the bulk goods are picked up by the pins 5, 6, 7, 8 from the ground 2 by transport by means of means (not shown) over the ground of the device 1 in the direction of an arrow 25. The picked-up good is passed over the guide plates 9, 10, 11 to the cutting device 20. Before the pins 5, 6, 7, 8 withdraw via the respective slots 13, 14, 15, 16 to below the flat plates 17, 18, 19, the rotating blades 23 get a grip on the bulk material, which is rotated of the blades 23 corresponding to the arrow 26, i.e. opposite to the direction of rotation of the pins 5, 6, 7, 8, which is indicated by the arrow 27, is supplied to the cooperation zone between the cutting edges 24 and the respective cutting edges of the knife 21, so that these co-operating cutting edges co-act as scissors to shred the bulk of the material.

Means for further transporting the comminuted bulk are not shown.

It will be understood that the path of the pick-up pins and the position of the respective cutting stations, consisting of a fixed blade and the rotary blades co-operating therewith, must not coincide at any point.

The figure shows part of a device according to the invention. The device can be imagined extensively to the left to any desired and practical length.

The number of cutting stations between adjacent pins can be selected as required.

In general, the invention finds application in loader wagons, pick-up balers or other machines provided with a pick-up or pick-up.

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Claims (3)

1. Device for receiving ground-lying, loose or incoherent bulk material, for example hay, green fodder, straw, grass and the like, which device comprises: a rotary drive shaft, on which circumferential transverse directions, each in one plane disposed pins are provided, the ends of which have some distance from the ground at the lowest point of their track during rotation of the shaft; 10 guide plates of curved shape arranged between adjacent sets of pins at least over the ascending part of the tracks, the centers of curvature of which lie on the side of the shaft, to each of which guide plates a plate section extending approximately tangentially and in at least approximately horizontal direction, characterized by means for cutting the bulk, which means comprise: at least one fixed knife; and a second rotatably drivable shaft, on which circumferentially set transverse directions each are disposed in one plane, the cutting edges of which cooperate with a cutting edge of the fixed blades, the path of the ends of the pins extending beyond the cutting means extends such that the bulk material absorbed by the pins is introduced into the cutting means by those pins. 2. Device according to claim 1, characterized in that the shafts are rotatably rotatable in the opposite direction. Device according to claim 1 or 2, characterized in that the cutting edges have a corrugated or serrated shape.