IT202100015611A1

IT202100015611A1 - DISC HARROW WITH SINGLE BEAM FRAME WITH SYNCHRONOUS MOVEMENT

Info

Publication number: IT202100015611A1
Application number: IT102021000015611A
Authority: IT
Inventors: Antonio D'addona
Original assignee: Da Carpenterie S R L
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-12-15

Description

Descrizione dell?invenzione avente per titolo: Description of the invention entitled:

?ERPICE A DISCO A TELAIO MONOTRAVE CON MOVIMENTO SINCRONO? ?DISC HARROW WITH SINGLE BEAM FRAME WITH SYNCHRONOUS MOVEMENT?

Descrizione Description

Campo della tecnica field of technique

La presente invenzione opera nell?ambito delle macchine agricole, in particolare di quelle impiegate per lavori complementari nell?agricoltura. Ancora pi? dettagliatamente, l?oggetto del presente brevetto ? indicato per la frantumazione delle stoppie e degli altri residui di coltivazione, delle sterpaglie da mancata coltivazione e nella realizzazione di fasce antincendio. The present invention operates in the field of agricultural machines, in particular those used for complementary jobs in agriculture. even more in detail, the object of this patent? suitable for crushing stubble and other cultivation residues, brushwood from non-cultivation and for creating fire-fighting strips.

Arte nota Known art

Sono oggi noti diverse tipologie di erpici: estirpatore, a denti rigidi, a denti vibranti, a maglie, rotante, a dischi. Gli erpici a dischi sono formati da due o pi? serie di ruote dentate e dischi taglienti, si distingue tra erpici a dischi dritti (frangizolle) e a dischi obliqui (morgano o smorgano), con funzioni analoghe ai precedenti ma adatto a terreni meno tenaci; questi attrezzi esistono in versioni diverse in base al peso e alle dimensioni dei dischi, e quindi pi? o meno adatti ai vari scopi. Different types of harrows are known today: grubber, with rigid teeth, with vibrating teeth, with meshes, rotary, with discs. Disc harrows are formed by two or more? series of cogwheels and cutting discs, a distinction is made between harrows with straight discs (frangizolle) and oblique discs (morgano or smorgane), with similar functions to the previous ones but suitable for less tenacious soils; these tools exist in different versions based on the weight and size of the discs, and therefore more? or less suitable for the various purposes.

Sono noti, come da brevetto ITRN20060016 (A1), erpici comprendenti un dispositivo che permette di variare la posizione delle due sezioni portadischi della medesima coppia e quindi di diversificarne l?angolazione rispetto alla direzione del moto dell?erpice. As per patent ITRN20060016 (A1), harrows are known comprising a device which allows to vary the position of the two disc-holding sections of the same pair and therefore to diversify their angle with respect to the direction of motion of the harrow.

La tecnica costruttiva ad oggi in uso prevede la realizzazione di un telaio rettangolare in tubolari di sezione quadra o rettangolare variabile generalmente tra i 60 mm e i 150 mm per uno spessore che generalmente oscilla tra i 4 e i 10 mm. Questo schema comporta un notevole dispendio di risorse in fase di realizzazione, un elevato numero di componenti da tagliare e saldare, esponendo inevitabilmente il prodotto finale ad una serie di criticit? strutturali derivanti proprio dai limiti intrinseci dei tubolari saldati (cricche, fessurazioni, ossidazioni precoci, ecc.), elevati attriti in fase di modulazione e logoramenti precoci. Il processo costruttivo classico determina anche dei vincoli di natura dimensionale che non permettono un pieno sfruttamento delle potenzialit? dell?attrezzo. The construction technique in use today involves the construction of a rectangular tubular frame with a square or rectangular section that generally varies between 60 mm and 150 mm for a thickness that generally ranges between 4 and 10 mm. This scheme involves a considerable expenditure of resources during the construction phase, a large number of components to be cut and welded, inevitably exposing the final product to a series of criticalities. structural deriving precisely from the intrinsic limits of welded tubulars (cracks, fissures, early oxidation, etc.), high friction in the modulation phase and early wear. The classic construction process also determines dimensional constraints that do not allow full exploitation of the potential? of the tool.

? evidente che i brevetti citati non risolvono le problematiche sopra descritte, cos? come le altre privative ad oggi in essere. ? evident that the patents mentioned do not solve the problems described above, so? like the other privatives existing today.

? quindi scopo della presente domanda di brevetto quello di aumentare la resistenza alle sollecitazioni, evitare tutte le lavorazioni meccaniche successive all?assemblaggio, consentendo un notevole risparmio di tempo e risorse a vantaggio della durata, ridurre il carico sui componenti soggetti a sfregamento ridurre la lunghezza totale dell?attrezzo consentendo una migliore distribuzione delle masse che ne aumentano anche l?efficacia e il rendimento in campo. ? therefore the purpose of this patent application is to increase resistance to stress, avoid all mechanical processes subsequent to assembly, allowing a considerable saving of time and resources to the advantage of duration, reduce the load on components subject to friction reduce the total length of the tool allowing a better distribution of the masses which also increase its effectiveness and efficiency in the field.

Descrizione dell?invenzione Description of the invention

Secondo la presente invenzione viene realizzato un erpice a disco a telaio monotrave che risolve efficacemente le problematiche suesposte. According to the present invention a disc harrow with a single beam frame is provided which effectively solves the above problems.

Il presente trovato ? un erpice a disco a telaio monotrave, installabile su qualsiasi macchinario agricolodestinato alla lavorazione primaria del terreno, al ripasso del terreno in fase di presemina, al successivo interramento delle sementi, alla realizzazione di fasce antincendio, alla frantumazione delle stoppie e degli altri residui di coltivazione, delle sterpaglie da mancata coltivazione. The present found ? a disc harrow with a single beam frame, which can be installed on any agricultural machinery intended for the primary tillage of the soil, the finishing of the soil in the pre-sowing phase, the subsequent burying of the seeds, the creation of fire-fighting strips, the crushing of stubble and other crop residues , brushwood from non-cultivation.

Scopo della presente invenzione ? quello di aumentare la resistenza alle sollecitazioni, evitare tutte le lavorazioni meccaniche successive all?assemblaggio, consentendo un notevole risparmio di tempo e risorse a vantaggio della durata, ridurre il carico sui componenti soggetti a sfregamento, ridurre la lunghezza totale dell?attrezzo consentendo una migliore distribuzione delle masse che ne aumentano anche l?efficacia e il rendimento in campo. Purpose of the present invention? that of increasing resistance to stresses, avoiding all mechanical processes subsequent to assembly, allowing for a considerable saving of time and resources to the advantage of durability, reducing the load on components subject to friction, reducing the total length of the tool, allowing for better distribution of the masses which also increase its effectiveness and efficiency in the field.

Secondo la presente invenzione, l?erpice a disco a telaio monotrave presenta un monotelaio centrale costituito da un unico tubolare e soltanto tre elementi in lamiera stampata. A detto telaio monotrave sono impegnate due sezioni, in cui sono impegnati i dischi, e un carrello attraverso cinematismi. Tutti i cinematismi sono alloggiati in boccole completamente annegate nel telaio stesso e successivamente saldate. Questo sistema permette la saldatura radiale di tutta la boccola e non tangenziale come avviene generalmente, con un aumento esponenziale della resistenza alle sollecitazioni di tutto il sistema. Ancora pi? nel dettaglio dette boccole, le quali vanno a sostituire le comuni bronzine, sono inserite nei perni cerniera del telaio. Dette boccole sono, inoltre, prodotte in materiale plastico, come PVC, polietilene e preferibilmente teflon, garantendo una resistenza maggiore alle sollecitazioni dovute al movimento dei cinematismi e non necessitano di alcun lubrificante: tale caratteristica riduce notevolmente la manutenzione periodica che i normali erpici necessitano. According to the present invention, the single beam frame disc harrow has a central single frame made up of a single tubular and only three pressed sheet metal elements. Two sections are engaged to said single-beam frame, in which the disks are engaged, and a carriage through kinematic systems. All the kinematic mechanisms are housed in bushings completely drowned in the frame itself and subsequently welded. This system allows radial welding of the whole bush and not tangential as generally occurs, with an exponential increase in the resistance to stress of the whole system. even more in detail, these bushings, which replace the common bushings, are inserted in the hinge pins of the frame. Furthermore, these bushings are produced in plastic material, such as PVC, polyethylene and preferably Teflon, guaranteeing greater resistance to the stresses due to the movement of the kinematic mechanisms and do not require any lubricant: this characteristic considerably reduces the periodic maintenance that normal harrows require.

La presente invenzione, nella sua forma di realizzazione preferita, prevede l?impiego perni cerniera in acciaio speciale gi? rifinito internamente, evitando tutte le lavorazioni meccaniche successive all?assemblaggio e consentendo di realizzare cinematismi su boccole in tecnopolimeri di dimensioni standard, con notevole risparmio in termini di tempo e risorse a vantaggio della durata. The present invention, in its preferred embodiment, envisages the use of hinge pins in special steel already in use. internally finished, avoiding all mechanical processes subsequent to assembly and allowing kinematic mechanisms to be created on standard-sized technopolymer bushings, with considerable savings in terms of time and resources to the advantage of durability.

La presente invenzione prevede inoltre l?incremento dei diametri e delle lunghezze dei perni cerniera rispetto alla tecnica nota: aumentando le superfici di rotolamento e migliorando le leve si riduce, infatti, il carico sui componenti soggetti a sfregamento. Detti perni cerniera presentano un diametro di 65mm, una lunghezza variabile tra 500 mm e i 900 mm (per il carrello) e una larghezza di 10 mm. The present invention also provides for an increase in the diameters and lengths of the hinge pins with respect to the prior art: by increasing the rolling surfaces and improving the levers, in fact, the load on the components subject to friction is reduced. These hinge pins have a diameter of 65mm, a variable length between 500mm and 900mm (for the trolley) and a width of 10mm.

Il cinematismo di detto erpice a disco a telaio monotrave prevede un solo cilindro idraulico che collega telaio, sezioni, carrello e timone anteriore. Detto cilindro idraulico, sfruttando i movimenti del timone anteriore, garantisce un innovativo sincronismo fra apertura carrello e leva di regolazione delle sezioni con un solo collegamento idraulico ?on/off?: irrigidendo il timone anteriore ? possibile passare dalla condizione di trasporto su strada (carrello abbassato), alla posizione di lavoro leggero (carrello a mezza corsa), alla posizione di lavoro intenso (carrello completamente alzato), azionando un unico comando idraulico. Tale movimento del carrello dovuto all?irrigidimento o meno del timone anteriore permette vantaggiosamente anche di regolare l?andamento delle sezioni: infatti, con il carrello completamente alzato, e quindi in posizione di lavoro intenso, le sezioni assumeranno una posizione convergente formando una ?V?; in detta posizione di lavoro le sezioni manterranno un?inerzia ottimale durante il passaggio su qualsiasi terreno agricolo; mentre in posizione di lavoro leggero le sezioni avranno in maggior grado di libert?, tale da adeguarsi all?esigenze dell?utilizzatore dell?erpice a disco monotrave. The kinematics of this disc harrow with a single beam frame has a single hydraulic cylinder which connects the frame, sections, carriage and front drawbar. Said hydraulic cylinder, exploiting the movements of the front tiller, guarantees an innovative synchronism between trolley opening and section adjustment lever with a single ?on/off? hydraulic connection: by stiffening the front tiller ? It is possible to switch from the road transport condition (trolley lowered), to the light work position (trolley at half stroke), to the intense work position (trolley fully raised), by operating a single hydraulic control. This movement of the trolley due to the stiffening or otherwise of the front drawbar also advantageously allows you to adjust the progress of the sections: in fact, with the trolley completely raised, and therefore in the intense working position, the sections will assume a converging position forming a ?V ?; in said working position, the sections will maintain optimal inertia while passing over any agricultural terrain; while in the light working position the sections will have a greater degree of freedom, such as to adapt to the needs of the user of the single beam disc harrow.

Questa soluzione consente di garantire una elevata modulabilit? di funzionamento diminuendo i costi di realizzazione. Il sincronismo permette di mantenere ridotta la lunghezza totale dell?attrezzo in quanto non si verificano mai contrasti fra carrello e sezioni, inoltre, grazie ad una migliore distribuzione delle masse, si ha un aumento dell?efficacia e del rendimento in campo dell?attrezzo. Grazie all?istallazione di un profilo con molla a contrasto, tra telaio monotrave e timone anteriore, atto ad imprimere una forza, la stabilit? dell?invenzione ? ulteriormente migliorata. This solution allows you to ensure high modularity? of operation by decreasing the construction costs. The synchronism allows to keep the total length of the implement reduced as there is never any conflict between the trolley and the sections, furthermore, thanks to a better distribution of the masses, there is an increase in the effectiveness and efficiency of the implement in the field. Thanks to the installation of a profile with a contrasting spring, between the single beam frame and the front rudder, capable of imparting strength, stability? of the invention ? further improved.

In una delle forme di realizzazione preferite la presente invenzione pu? prevedere installate almeno due telecamere con sensore di distanza per ogni lato lungo del telaio monotrave, atte a trasmettere l?immagine riguardante l?esatta posizione delle sezioni su uno schermo installabile presso il posto guida del macchinario. Dette telecamere con sensore di distanza permettono vantaggiosamente al guidatore di prendere visione dell?ottimale posizione di lavoro/trasporto delle sezioni; dette telecamere atte, inoltre, grazie ad un software preprogrammato, ad emettere un feedback sonoro, attraverso detto schermo, quando le posizioni di lavoro/trasporto ottimali sono state raggiunte dalle sezioni. In one of the preferred embodiments the present invention can install at least two video cameras with distance sensor for each long side of the single beam frame, capable of transmitting the image regarding the exact position of the sections on a screen that can be installed at the driver's seat of the machinery. Said video cameras with distance sensor advantageously allow the driver to view the optimal working/transport position of the sections; said video cameras also suitable, thanks to a pre-programmed software, to emit sound feedback, through said screen, when the optimal working/transport positions have been reached by the sections.

I vantaggi offerti dalla presente invenzione sono evidenti alla luce della descrizione fin qui esposta e saranno ancora pi? chiari grazie alle figure annesse e alla relativa descrizione dettagliata. The advantages offered by the present invention are evident in the light of the description set forth up to now and will be even more clear thanks to the annexed figures and the relative detailed description.

Descrizione delle figure Description of the figures

L?invenzione verr? qui di seguito descritta in almeno una forma di realizzazione preferita a titolo esplicativo e non limitativo con l?ausilio delle figure annesse, nelle quali: The invention will come described hereinafter in at least one preferred embodiment by way of explanation and not of limitation with the aid of the accompanying figures, in which:

- FIGURA 1 mostra una vista laterale sinistra dell?invenzione in una delle sue forme di realizzazione preferite, quando ? in condizione di trasporto, quindi con carrello 13 completamente abbassato e sezioni 11 ortogonali al telaio 10; - FIGURE 1 shows a left side view of the invention in one of its preferred embodiments, when ? in transport condition, therefore with trolley 13 completely lowered and sections 11 perpendicular to the frame 10;

- FIGURA 2 mostra una vista laterale destra dell?invenzione in una delle sue forme di realizzazione preferite, quando ? in condizione di trasporto, quindi con carrello 13 completamente abbassato e sezioni 11 ortogonali al telaio 10. - FIGURE 2 shows a right side view of the invention in one of its preferred embodiments, when ? in transport condition, therefore with trolley 13 completely lowered and sections 11 perpendicular to the frame 10.

Descrizione dettagliata dell?invenzione Detailed description of the invention

La presente invenzione verr? ora illustrata a titolo puramente esemplificativo ma non limitativo o vincolante, ricorrendo alle figure le quali illustrano una delle realizzazioni relativamente al presente concetto inventivo. This invention will come now illustrated purely by way of example but not in a limiting or binding way, making use of the figures which illustrate one of the embodiments with respect to the present inventive concept.

In riferimento alle FIGG. 1 e 2 sono illustrati i principali componenti di un erpice a disco a telaio monotrave con movimento sincrono 100. With reference to FIGS. 1 and 2 show the main components of a single beam frame disc harrow with synchronous movement 100.

Detto erpice a disco a telaio monotrave con movimento sincrono 100 comprende un telaio 10, costituito da un unico tubolare e soltanto tre elementi in lamiera stampata, atto a mantenere ben saldi tutti i componenti, salvaguardando il macchinario da criticit? strutturali e i logoramenti precoci derivanti da tubolari saldati. Said single-beam frame disc harrow with synchronous movement 100 comprises a frame 10, consisting of a single tubular and only three pressed sheet metal elements, capable of keeping all the components firmly in place, safeguarding the machinery from criticality. structural and early wear deriving from welded tubulars.

Nella parte anteriore di detto telaio 10 sono impegnati, attraverso un unico meccanismo 23, un profilo con molla a contrasto 17 e il timone anteriore 18. Detto timone anteriore 18 permette il collegamento della presente invenzione ad un macchinario agricolo tramite un sistema di collegamento 16; inoltre, detto timone anteriore 18 atto ad essere movimentato da un unico comando idraulico presente nel macchinario agricolo su cui ? impegnata l?invenzione, e conseguentemente a mobilitare il cilindro idraulico 14, tramite un tubolare 22, garantendo un sincronismo tra movimento del carrello 13 e movimento delle sezioni 11. In the front part of said frame 10, through a single mechanism 23, a profile with contrasting spring 17 and the front drawbar 18 are engaged. Said front drawbar 18 allows the connection of the present invention to an agricultural machinery through a connection system 16; furthermore, said front rudder 18 able to be moved by a single hydraulic control present in the agricultural machinery on which it is operated. engaged the invention, and consequently to mobilize the hydraulic cylinder 14, through a tubular 22, ensuring a synchronism between the movement of the carriage 13 and the movement of the sections 11.

Detto tubolare 22 atto a trasferire l?irrigidimento/distensione di detto timone anteriore 18 a detto cilindro idraulico 14. Said tubular 22 suitable for transferring the stiffening/relaxation of said front rudder 18 to said hydraulic cylinder 14.

Detto profilo con molla a contrasto 17 atto ad imprimere una forza tale da migliorare la stabilit? dell?invenzione. Said profile with contrasting spring 17 suitable for imparting a force such as to improve stability? of the invention.

Presso le estremit?, anteriore e posteriore, di detto telaio 10 sono impegnate attraverso perni cerniera 19 due sezioni 11; dette sezioni 11, su cui sono impegnati i dischi 12, atte a trattare il terreno quando in posizione di lavoro leggero e/o intenso. Two sections 11 are engaged at the front and rear ends of said frame 10 through hinge pins 19; said sections 11, on which the discs 12 are engaged, suitable for treating the soil when in light and/or intense working position.

Dette sezioni 11 atte ad assumere una posizione convergente in detta posizione di lavoro intenso mantenendo un?inerzia ottimale durante il passaggio su qualsiasi terreno agricolo; mentre in posizione di lavoro leggero dette sezioni 11 avranno in maggior grado di libert?, tale da adeguarsi all?esigenze dell?utilizzatore dell?erpice a disco monotrave con movimento sincrono 100; dette sezioni 11 atte ad assumere una posizione ortogonale a detto telaio 10 in condizione di trasporto. Detto cilindro idraulico 14, sfruttando i movimenti del timone anteriore 18 ed essendo collegato a detto telaio 10, a detto carrello 13 e a dette sezioni 11, garantisce un sincronismo fra apertura carrello 13 e leva di regolazione della sezione anteriore 20 e leva di regolazione della sezione posteriore 21. Detto cilindro idraulico 14 essendo collegato a detto telaio 10 tramite una boccola 18 attraversante l?intera larghezza di detto telaio 10. Said sections 11 suitable for assuming a converging position in said intense working position maintaining an optimal inertia during the passage on any agricultural land; while in the light working position said sections 11 will have a greater degree of freedom, such as to adapt to the needs of the user of the single beam disc harrow with synchronous movement 100; said sections 11 adapted to assume an orthogonal position to said frame 10 in transport condition. Said hydraulic cylinder 14, exploiting the movements of the front rudder 18 and being connected to said frame 10, to said trolley 13 and to said sections 11, ensures synchronism between the opening of the trolley 13 and the front section adjustment lever 20 and the section adjustment lever rear 21. Said hydraulic cylinder 14 being connected to said frame 10 via a bush 18 crossing the entire width of said frame 10.

Detto carrello 13, essendo mobilitato da detto cilindro idraulico 14, atto passare dalla condizione di trasporto su strada, quando ? abbassato, alla posizione di lavoro leggero, quando ? a mezza corsa, e alla posizione di lavoro intenso quando ? completamente alzato. Said trolley 13, being mobilized by said hydraulic cylinder 14, capable of passing from the road transport condition, when? lowered, to the light work position, when ? half-stroke, and in the position of intense work when ? fully raised.

Detta leva di regolazione della sezione anteriore 20, essendo collegata a detto cilindro idraulico 14 tramite detta boccola 18, atta a mobilitare la sezione 11 anteriore; mentre detta leva di regolazione della sezione posteriore 21, compie le medesime operazioni sulla sezione 11 posteriore. Said adjustment lever of the front section 20, being connected to said hydraulic cylinder 14 through said bush 18, able to mobilize the front section 11; while said adjustment lever of the rear section 21 performs the same operations on the rear section 11.

? infine chiaro che all?invenzione fin qui descritta possono essere apportate modifiche, aggiunte o varianti ovvie per un tecnico del ramo, senza per questo fuoriuscire dall?ambito di tutela che ? fornito dalle rivendicazioni annesse. ? finally, it is clear that modifications, additions or variations that are obvious to a person skilled in the art can be made to the invention described up to now, without thereby departing from the scope of protection which ? provided by the appended claims.

Claims

1. Disc harrow with single beam frame with synchronous movement (100) suitable for carrying out primary tillage of the soil, finishing the soil in the pre-sowing phase, burying the seeds, creating fire-fighting strips, crushing the stubble and other crop residues, brushwood from non-cultivation; said disk harrow with single beam frame with synchronous movement (100) being characterized in that it comprises:

- a frame (10), made up of a single tubular and only three elements in pressed sheet metal, able to keep all the components firmly in place, safeguarding the machinery from criticality? structural and premature wear deriving from welded tubular;

- at least one front drawbar (18), installed in the front part of said frame (10), able to allow the connection of said disc harrow with single beam frame with synchronous movement (100) to an agricultural machinery through a connection system (16) ; said front rudder (18) able to be moved by a single hydraulic control present in said agricultural machinery connected to said single beam frame disc harrow with synchronous movement (100), and consequently to mobilize the hydraulic cylinder (14), by means of a tubular (22), guaranteeing a synchronism between the movement of the trolley (13) and the movement of the sections (11);

- said tubular (22) able to transfer the stiffening/relaxation of said front rudder (18) to said hydraulic cylinder (14);

- at least one profile with contrast spring (17), installed in the front part of said frame (10) and inserted between said frame (10) and said front rudder (18), able to impart a force such as to improve stability? of said harrow;

- at least two sections (11), engaged at the front and rear ends of said frame (10) through hinge pins (19) on which corresponding discs (12) are engaged, said sections (11) being able to treat the ground when in light and/or intense work position; said sections (11) being capable of assuming a converging position in said intense work position while maintaining optimum inertia during passage over any agricultural land; said sections (11) being able to have a greater degree of freedom? in a light working position, such as to adapt to the needs of the user; said sections (11) being able to assume a position orthogonal to said frame (10) in transport condition;

- a said hydraulic cylinder (14), capable of exploiting the movements of the front rudder (18) and being connected to said frame (10), to said carriage (13) and to said sections (11), capable of ensuring synchronism between the opening of said carriage (13), an adjustment lever of the front section (20) and an adjustment lever of the rear section (21); said hydraulic cylinder (14) being connected to said frame (10) via a bush (18) spanning the entire width of said frame (10);

- a said carriage (13), being mobilized by said hydraulic cylinder (14) and being engaged on said frame (10), able to be lowered when ? in road transport condition; said trolley (13) adapted to be positioned at half stroke in the light working position; said trolley (13) being adapted to be completely lifted when ? in position of intense work;

- said front section adjustment lever (20), being connected to said hydraulic cylinder (14) through said bushing (18), able to mobilize the front section (11);

- said adjustment lever of the rear section (21), being connected to said hydraulic cylinder (14) through said bush (18), able to mobilize the rear section (11).

2. Disc harrow with single beam frame with synchronous movement (100), according to the preceding claim 1, characterized in that all the mechanisms are housed in bushings completely embedded in said frame (10), subsequently welded, allowing radial welding of the whole the bush in such a way as to increase resistance to stress.

3. Disc harrow with single beam frame with synchronous movement (100), according to the preceding claims 1 and 2, characterized in that said bushings are made of plastic material, such as PVC, polyethylene and preferably Teflon; these bushings are designed to ensure greater resistance to stress by eliminating the use of lubricant so as to reduce periodic maintenance.

4. Disc harrow with single beam frame with synchronous movement (100), according to any one of the preceding claims, characterized in that said hinge pins (19) have a diameter of 65mm, a length varying between 500mm and 900mm and a width by 10 mm, increasing the rolling surfaces and improving the levers in such a way as to reduce the load on the components subject to friction.

5. Single-beam frame disc harrow with synchronous movement (100), according to any one of the preceding claims, characterized in that they have hinge pins (19), are produced in special steel and already in use. finished internally, avoiding all the mechanical processes subsequent to assembly.

6. Disc harrow with single beam frame with synchronous movement (100), according to any one of the preceding claims, characterized in that it has a reduced overall length since said synchronism avoids conflicts between said sections (11) and said carriage ( 13).

7. Disc harrow with single beam frame with synchronous movement (100), according to any one of the preceding claims, characterized in that at least two television cameras with distance sensor are installed on each long side of said frame (10), capable of transmitting the ?image concerning the exact position of said sections (11) on a screen that can be installed near the driver's seat of the agricultural machinery; said television cameras with distance sensor being able to allow the driver to view the optimal working/transport position of said sections (11).

8. Disc harrow with single beam frame with synchronous movement (100), according to the preceding claim 7, characterized in that said television cameras are able, through a preprogrammed software, to emit an acoustic feedback through said screen, when the working positions/ optimal transport were achieved by said sections.