RO137730A2 - TECHNICAL EQUIPMENT FOR CUTTING AND TYING HEMP STEMS - Google Patents

Abstract

The invention relates to a technical equipment for cutting hemp stalks for fibres, binding them together with rope to form bundles, taking the bundles and charging them onto the platform of the claimed equipment and discharging them to the ground, by the lateral side of the working system, at the back of a tractor. According to the invention, the equipment comprises a harvesting assembly (1) in connection with a mowing machine (A), provided with a cutting apparatus with fixed finger bar and cutter with reciprocating motion and also with a rope binding device, a bundle charging assembly (2) that can be lifted or lowered by means of a hydraulic cylinder (14), a discharging platform (3) with two chain strands (15) with attachment, an articulated drawbar (4) with an indexing system (5) for the transport or working position of the drawbar(4), a supporting leg (6), two assembled wheels (7) mounted on welded semi-axles, a hydraulic transmission (8) and cardan transmissions (9), where the charging assembly (2) has two or three chain strands (10) with the possibility of adjusting the distance between the strands and indexing in the working position, two shafts (11 and 12), a drive one and a driven one, on which chain wheels (13) are mounted.

Description

TECHNICAL EQUIPMENT FOR CUTTING AND TYING HEMP STEMS

The invention relates to a technical equipment intended for cutting hemp stems for fiber, tying them with twine and forming bundles, picking up the bundles and loading them onto the platform of the equipment and unloading them on the ground, on the side of the working system, following the tractor.

Globally, hemp stalk harvesting technologies for fiber use technical equipment that cuts the stalks into pieces, generally less than 1 m, which fall disorderly into furrows to dry for baling with balers.

The machine with vertical drum system with cutting discs "Bluecherho 02/03" D developed by the company Kranemann (Germany) was used. The cutting units (discs), located in fixed positions on the drum, cut the stalks held vertically into 600-700 mm pieces before placing them in a band.

More recently, the Tebeco company from the Czech Republic produced the technical equipment "Clipper 4.3.MMH", with a stalk cutting system composed of three cutting bars mounted at three different heights mounted on a mechanical frame towed and operated by the tractor. The pieces of cut stalks, about 1000 mm in size, fall to the ground in messy furrows.

Formation-Ag made the CleanCut equipment, characterized by an oversized header, cutter, conveyor, all mounted on front loader arms.

Also, grain harvesters assembled with specialized equipment are used for harvesting hemp, for example the HempFlax / GroeNoord company assembles the DoubleCut or SingleCut equipment on the John Deere combine that cuts the stalks at ground level, segments them and leaves them on the ground in the form of furrow following the combine.

The disadvantages of the solutions mentioned above, in the equipment for harvesting hemp stems, are:

the combines adapted for harvesting hemp, even the most modern ones, segment the stems that can thus no longer be processed to obtain fibers useful in the textile industry;

when harvesting with specialized technical equipment, with one or more cutting bars, pieces of stems with dimensions from 600 mm to 1000 mm, fall in the form of messy furrows and require other equipment for clearing the land.

The technical problem solved by the invention consists in making a technical equipment for cutting and tying hemp stems in the form of sheaves, taking and loading them on the equipment platform and unloading them on the ground following the tractor, with the longitudinal axis of the sheaf in the direction of movement of the system tractor-technical equipment.

The invention is characterized by a harvesting machine, a loading assembly, an unloading platform, a running system, a screed with an indexing mechanism, hydraulic installation and mechanical transmission.

The technical harvesting equipment is of the semi-mounted type and mainly consists of a cutter with fixed fingers and rectilinear-reciprocating knife, and a string tying device. The loading assembly specifically has two or three chain branches with possibilities to change the distance between the branches, by sliding vertically and indexing in

STATE OFFICE FOR PACKAGING AND TRADEMARKS Invention Patent Application _No .......o.....2o22-oo 2fe9.....

Deposit date...........1..Ζ··*05.*·.2022.......

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Li work position. The unloading platform mainly consists of a frame made of welded profiles and two agricultural chain branches with attachment for carrying and unloading sheaves. The screen features a mechanical device for positioning and indexing it in the correct working or transport position. The hydraulic system, characterized by having its own oil tank and a constant flow hydraulic pump, operates the stalk cutter and the loading system, and the mechanical transmission, connected to the tractor's power take-off via universal joints, transmits a moment of power at the drive axles of the agricultural chains of the unloading system.

By applying the invention the following advantages are obtained

- hemp stalks harvested with this equipment have lengths that will allow processing to obtain fibers, because they are not fragmented during harvesting;

- finalizing the drying of the hemp stalks will be done faster due to the uniform and orderly unloading of the sheaves on the ground;

- manipulation in the field in order to quickly release the land or in warehouses and processing units will be easier, manually or mechanized, thanks to the harvesting in the form of sheaves.

An example of the realization of the invention is given further in connection with figures 1-4 which represent:

- Fig. 1 - Technical equipment for cutting and tying hemp stems - general view

- Fig.2 - Loading assembly

- Fig.3 - Detail with the indexing system of the curtain rod

- Fig.4 - Schematic of the technical equipment with the indexed screen in the working position.

The technical equipment for cutting and tying hemp stems, shown in Figure 1, consists of a harvesting machine (1), resulting from the modification of the standard cutting and tying machine from the BCS type chainsaw (A), mainly equipped with fixed-finger cutter and reciprocating knife with 76.2 mm blade pitch and 1.4 mm working width and twine binding device, a sheaf loading assembly (2), raised or lowered with a hydraulic cylinder (14), an unloading platform (3) with two chain branches with attachment (15), articulated boom (4) with indexing system (5) of boom in transport or working position, leg support (6), two assembled wheels (7) mounted on welded semi-axles, hydraulic transmission (8), cardan transmissions (9).

The loading assembly (2), according to Figure 1, consists of two or three chain branches (10), with possibilities for adjusting the distance between the branches and indexing in the working position, a motor shaft (11), and a driven shaft (12) on which the sprockets (13) are mounted.

The indexing system (5) of the headstock (4) in various positions relative to the tractor, according to Figure 3, characteristically has a bolt (16) mounted hinged on the headstock and a crown (17) with several slots (B) and a lever ( 18) and a tension spring (19) that holds the pin in the selected slot.

To move the aggregate consisting of the tractor and equipment to the location where the hemp crop is located, connect the hitch (4) to the tractor's drawbar, raise and fix the support leg (6) in the transport position, operate the lever (18 ) and lift the pin (16) from the slot in which it is indexed, rotate the pin in the joint (C) and position the pin (16) in another slot of the crown (17), so that the formed aggregate respects the gauge width recommended for public roads, lift the harvester (1) with the hydraulic cylinder (14).

: / d / * 217 in the field, at the plot to be harvested, according to Figure 1, the plow is indexed in the working position, by fixing the pin (16) in a slot (B) of the crown (17) so that the harvester ( 1) to be positioned laterally-right at the outer limit of the wheel (D) of the tractor, Figure 4. At the end of the line, lower the cutting machine (1) to the desired cutting height with the help of the hydraulic cylinder (14), by command hydraulically, the cutting-tying machine, the sheaf loading assembly and the unloading assembly are put into operation. The bundles of hemp stalks cut and tied to the harvester (1) are driven and transported by finger chain arms (10) to the platform (3) and unloaded onto the ground behind the tractor in neat furrows.

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Claims (2)

CLAIM 1. Technical equipment for cutting and tying hemp stalks, characterized by the fact that it is a compound of a harvesting machine (1), resulting from the modification of the standard cutting and tying machine from the BCS type chainsaw (A), provided in main with fixed finger cutter and reciprocating knife with 76.2 mm cutter blade pitch and 1.4 mm working width and twine binding device, a sheaf loading assembly (2) , raised or lowered with a hydraulic cylinder (14), an unloading platform (3) with two chain branches with attachment (15), articulated boom (4) with indexing system (5) of the boom in the transport or storage position work, support leg (6), two assembled wheels (7) mounted on welded semi-axles, hydraulic transmission (8), cardan transmissions (9). The loading assembly (2), characteristically has two or three chain branches (10), with possibilities of adjusting the distance between the branches and indexing in the working position, a motor shaft (11), and a driven shaft (12) on which sprockets (13) are mounted. 2. The indexing system (5), characterized in that it is composed of a pin (16) hingedly mounted on the gate (4) and a crown (17) with several slots (B) spaced apart, welded to the unloading platform (3), a lever (18) and a tension spring (19) which keeps the pin in the slot and the buttstock "indexed" for transport or work.