DE2542032A1

DE2542032A1 - Front mounted mower with lifting arm - incorporates at least one cutter beam with motor driven blades, and pivot arms

Info

Publication number: DE2542032A1
Application number: DE19752542032
Authority: DE
Inventors: Ernst Weichel
Original assignee: Individual
Current assignee: Individual
Priority date: 1975-09-20
Filing date: 1975-09-20
Publication date: 1977-05-18

Abstract

Mower, positioned on a lifting arm (25) consists of at least one cutter-bar with motor-driven blades. The lifting arm (25) mounted on the front of the machine on a lengthwise centre plane, is hinged to pivot-arms (12, 13) forming a parallelogram, the end of which can be moved upwards and backwards. Pivot arms are suspended so that their bottom ends support two mower-shoes, the top ends are hinged to a cross-bar fixed to the front end of the lifting arm (25). At least one of the pivot arms has a second, parallel pivot-arm by which the height of the mower is adjustable to any level. At least one of the pivot arms is curved. The double-bladed cutter is driven by a hydraulic motor connected by flexible tubes to the hydraulic pump on the machine. The pivot arm may be a bracket shaped frame (112) the middle of which is a box (126) with front (124) and back (125) downward-pointing arms. Bearings (127) for a crank-shaft (123), an intermediate shaft (191) and links (130, 131) for two pivot-arms (129) are positioned on the arms (124, 125).

Description

Frontmähwerk fUr Motorlandmaschinen Front mower for motorized agricultural machines

Gegenstand der vorliegenden Erfindung ist ein Frontmähwerk fUr Motorlandmaschinen, das mittels nachlaufend aufgehängter Schwingen gelenkig an einer Aushebevorrichtung angebracht ist und wenigstens einen Messerbalken mit motorisch angetriebenen Messern aufweist.The subject of the present invention is a front mower for motorized agricultural machines, this is articulated to a lifting device by means of swinging arms that are suspended is attached and at least one cutter bar with motor-driven knives having.

Die Erfindung will die Nachteile bekannter Frontmähwerke dieser Bauart beseitigen, daß entweder die Arbeitsbreite zu gering, oder der Antrieb der Mähmesser , insbesondere wenn mehrere Messerbalken vorhanden sind, zu aufwendig ist. Auch das Verbringen der Mähwerke in eine Transportstellung, bei welcher Zin Teil des Mähwerkes Uber die Umrisse der Motorlandmaschine hinausragt, verursacht technische Schwierigkeiten.The invention seeks to overcome the disadvantages of known front mowers of this type eliminate that either the working width is too small, or the drive of the mower blades , especially if there are several cutter bars, is too expensive. Even moving the mowers into a transport position in which Zin is part of the Mower protrudes beyond the outline of the motorized agricultural machine, causing technical Trouble.

Die bekannten Mähwerke sind auch gegen das Auffahren auf Hindernisse noch zu empfindlich.The well-known mowers are also against running into obstacles still too sensitive.

Die Erfindung will daher ein Frontmähwerk der eingangs erwähnten Bauart bereitstellen, das sowohl mit einem als auch mit mehreren Messerbalken ausgeriistet werden kann, einen einfachen Antrieb fUr die Mähwerke aufweist und in Fahrstellung die Außenmaße der Motorlandmaschine nicht Uberragt. Außerdem soll dieses Frontmähwerk selbst dann noch betriebssicher arbeiten, wenn es nicht vermeidbar ist, beim Mähen gelegentlich auf ein Hindernis (z.B. ein Grenzstein, ein Baum oder ein Erdhügel) aufzufahren.The invention therefore aims at a front mower of the type mentioned at the beginning deploy that with both one and multiple Knife bar can be equipped, has a simple drive for the mowers and in the driving position does not exceed the external dimensions of the motorized agricultural machine. Also should this front mower can work safely even if it is unavoidable occasionally hits an obstacle (e.g. a boundary stone, a tree or a mound of earth).

Die Erfindung löst die Aufgabe dadurch, daß die Aushebevorrichtung aus einem etwa in Längsmitte vorne an der Motorlandmaschine gelagerten Hubarm besteht, der an zusammen ein Parallelogramm bildenden Schwenkarmen so angelenkt ist, daß sein vorderes Ende bei Betätigung der Hubvorrichtung zunächst nach oben und danach außerdem auch entgegengesetzt zur Fahrtrichtung, d. h.The invention solves the problem in that the lifting device consists of a lifting arm mounted approximately in the longitudinal center at the front of the motorized agricultural machine, which is hinged to together a parallelogram swivel arms that its front end when actuating the lifting device first up and then also opposite to the direction of travel, d. H.

nach rückwärts verschwenkbar ist.can be pivoted backwards.

Vorzugsweise sind die an ihren unteren Enden die beiden Mähuerkschuhe tragenden, nachlaufend aufgehängten Schwingen an ihren oberen Enden an einem Querträger angelenkt, der am vorderen Ende des tfubarmes starr befestigt ist, so daß die Schwingen mit diesem Querträger zusammen einen an sich bekannten portalförmigen Rahmen bilden.Preferably the two mower shoes are at their lower ends load-bearing, trailing swing arms at their upper ends on a cross member hinged, which is rigidly attached to the front end of the tfubarmes, so that the wings with this cross member together form a portal-shaped frame known per se.

Zweckmäßig ist wenigstens einer der Schwingen eine zweite. in etwa parallel zu ihr verlaufende und mit ihr ein Parallelogramm bildende Schwinge zugeordnet, die das Mähwerk in jeder HChenlage etwa parallel zur Bodenoberfläche führt.At least one of the wings is expediently a second. in approximately A rocker that runs parallel to it and forms a parallelogram with it, which guides the mower roughly parallel to the ground surface in every height position.

Vorzugsweise ist wenigstens eine Schwinge bogenförmig ausgebildet und hinter der Spitze des ihr zugeordneten Mähwerkschuhs an diesem angelenkt.Preferably, at least one rocker arm is arcuate and hinged to this behind the tip of the mower shoe assigned to it.

Das Schneidwerk ist über einen an sich bekannten Hydromotor angetrieben, der Uber flexible Schlauchleitungen von einer an der Motorlandmaschine angebrachten zarten Hydraulikpumpe mit sçparatem Ölbehälter beaufschlagt wird.The cutting unit is driven by a hydraulic motor known per se, the U via flexible hose lines from one attached to the motorized agricultural machine delicate hydraulic pump with a separate oil container.

Am Hubarm ist eine zusätzliche Quertraverse in einem erheblichen Abstand oberhalb der Bodenoberfläche angebracht, dessen äußere Enden Uber längenverstellbare Ketten, Zugstangen o.ä.On the lifting arm there is an additional cross member at a considerable distance Mounted above the ground surface, the outer ends of which are adjustable in length Chains, tie rods, etc.

mit den Außenschuhen des Mähwerkes verbunden sind und diese Traverse ist an einem mit dem Hubarm verbundenen zusätzlichen Schwenkarm derart angelenkt, daß bei Betätigung der Hubvorrichtung zuerst der Messerbalken und danach das vordere Ende des Hubarmes angehoben und schließlich auch zurUckgeschwenkt wird.are connected to the outer shoes of the mower and this traverse is articulated to an additional swivel arm connected to the lifting arm in such a way that that when the lifting device is operated first the cutter bar and then the front one The end of the lift arm is raised and finally also swiveled back.

Zweckmäßig ist der vordere Querträger in Arbeitsstellung in einem erheblichen Abstand vor und oberhalb des in Arbeitsstellung befindlichen Mähwerkes Uber der Erdoberfläche angebracht und es sind am Querbalken Ösen für die tettenstUcke eines an sich bekannten Wildretters angebracht.The front cross member is expediently in the working position in one considerable distance in front of and above the mower in working position Mounted above the surface of the earth and there are eyelets on the crossbeam for the pieces of furniture of a known game saver attached.

Vorzugsweise dient als nachlaufend aufgehängte Schwinge ein am vorderen Ende des Hubarmes mittels Befestigungsflansch angelenkter bügelförmiger Rahmen, dessen Mittelteil als Kasten ausgebildet ist, der mit Je einem vorderen und hinteren, sich nach unten erstreckenden Tragarm verbunden ist, an welchem sich Lager ffr eine Antriebswelle, eine Zwischenwelle und Gelenke fUr zwei Schwingarme, von denen jeder fUr den Antrieb wenigstens je eines Messers zweier am freien unteren Ende einander gegenüber liegend angelenkten MecserbalkeQ befinden.A bow-shaped frame articulated at the front end of the lifting arm by means of a fastening flange, the middle part of which is designed as a box, which is connected to a front and rear, downwardly extending support arm, on which there are bearings for a drive shaft, is preferably used as a trailing swing arm Intermediate shaft and joints for two swing arms, each of which for driving at least one knife each at the free lower end MecserbalkeQ hinged opposite one another are located.

Vorzugsweise, sind die Mähbalken in Arbeitsstellung nach außen abklappbar und in Fahrstellung zur Mitte hin in Vertikalstellung hochklappbar und von einer gemeinsamen Antriebsvorrichtung über Gelenkwellen oder hydraulische Antriebsmittel von der Motorlandmaschine angetrieben.Preferably, the cutter bars can be folded outwards in the working position and in the driving position towards the middle in the vertical position can be folded up and from one common drive device via cardan shafts or hydraulic drive means driven by the motorized agricultural machine.

Zweckmäßig ist an dem Kasten, der die bugelförmige Schwinge trägt, außerdem über ein Parallelogrammgestänge ein Getriebe höhenverstellbar angeordnet, an dessen nach unten gerichteter Abtriebswelle ein an sich bekannter Mähkreisel mit Mescerklingen angeordnet ist. Das Getriebe ist über eine Gelenkwelle mit den nach vorne Uberstehenden Zapfen der Yurbelwelle für den Antrieb der beiden Mähmesser verbunden.It is useful on the box that carries the bow-shaped rocker, In addition, a gearbox arranged to be height-adjustable via a parallelogram linkage, a known mower rotor on its downwardly directed output shaft is arranged with knife blades. The gearbox is connected to the Forward protruding pin of the Y crankshaft for driving the two mower blades tied together.

Fach einen anderen Merkmal ist die als bügelförmiger Rahmen ausgebildete Schwinge am Außenring eines Drehkranzes angelenkt, welcher in Arbeitsstellung etwa horizontal steht und über federbelastete Nocken mit einem Innenring verbunden ist, welcher an dem Befestigungsflansch fUr das vordere Ende des Hubarmes so angeordnet ist, daß der Tnnenring in Arbeitsstellung eine etwa vertikale Schwenkachse für den Außenring bildet, so daß beim Auffahren eines der Mähwerke auf ein Hindernis der Außenring sich um den Innenring begrenzt drehen kann.Another feature of the compartment is that it is designed as a bow-shaped frame Swing arm articulated on the outer ring of a turntable, which in the working position for example is horizontal and is connected to an inner ring via spring-loaded cams, which is arranged on the mounting flange for the front end of the lifting arm is that the inner ring in the working position has an approximately vertical pivot axis for the Outer ring forms, so that when one of the mowers hits an obstacle the Outer ring can rotate to a limited extent around the inner ring.

Vorzugsweise ist der hintere Haltearm mit einer Konsole versehen, an welcher die Mähbalken über elastische Zugmittel, die in einer verstellbaren Lochschiene angreifen, so aufgehängt sind, daß beim Anheben der Schwinge bzw. des Hubarmes die Messerbalken zunächst in eine horizontale Schwadstellung aushebbar sind, so daß die Schwinge ueber ein verstellbares Spannschloß und eine Fette mit einem etwa in der Mitte des Hubarmes angeordneten Anlenkpunkt verbunden ist. The rear holding arm is preferably provided with a console on which the cutter bars are suspended by elastic traction means that engage in an adjustable perforated rail so that when the rocker arm or the lifting arm is raised, the cutter bars can first be lifted into a horizontal swath position, so that the rocker is connected via an adjustable turnbuckle and a grease with a pivot point arranged approximately in the middle of the lifting arm.

Bezugszeichenliste 1 Rahmen der Arbeitsmaschine 2 Brücke 3 Stützen 4 StUtzen 5 Querträger 6 Längsträger 7 Platte 8 Konsolen 9 oberes Lager 10 mittleres Lager 11 Hubzylinder + 12 oberer Schwenkarm + 13 unterer Schwenkarm 14 Quertravere 15 Gelenk 16 Anschlag 17 Winkel + 18 Schwenkarm 19 Gelenk 20 LagerstUtze 21 Quertraverse des unteren Schwenkarmes 22 Lager 23 unteres Gelenk EUr Hubzylinder 24 oberes Gelenk für Hubzylinder + 25 Hubarm 26 oberes Gelenk am Hubarm 27 untere Gelenk am Hubarm 28 Konsolen 29 Platte 30 Flansch +31 Querträger 32 Konsole 39 Gelenk 34 bogenförmige Schwinge 35 Gelenk +36 Außen rechts +37 Doppelmesserschneidwerk 38 Schwadbleck 39 Leitstab 40 Stütze 41 Gelenk '4^ Schwinge unten 43 unteres Gelek 44 Bolzen 45 Steg 46 Zapfen 47 Lager 48 Scheibe 49 Schraube +50 Schwinge oben 51 unteres Gelenk 52 Gabelstück 53 Bolzen 54 Außenschuh links 55 Brück 56 Lager 57 Kurbelwelle 58 Kurbeln 59 Schwinghebel 60 Büchser 61 Lager +62 Hydromotor +63 Schlauchleitung +64 Schlauchleitung 65 Hydraulikkupplung 66 Hydraulikkupplung 66 Ölleitung 67 Ölleitung +68 Hydraulikpumpe +69 Ölbehälter 70 Keilriemenscheibe 71 Keilriemenscheibe 72 Keilriemen +73 Quertraverse 74 Laschen 75 Kette 76 77 Ösen 78 Kettenstränge 100 Winkelfalnsch 101 Innenring 102 Außenring 103 Boden 104 Gehäuse 105 Gehäuse +105 Nocken +106 Nocken 108 Druckfeder 109 Pasten 110 Augen (am Boden) 111 Yonsolen +112 bügelförmige Rahmen +113 Parallelogrammgestänge unten +114 Parallelogrammgestänge oben 115 Gelenk oben 116 Gelenk unten 117 konsolen 118 rinkeltrieb 119 Abdeckring 120 Mähkreisel 121 Mesoerklinge 122 Abtriebszapfen +123 Kurbelwelle + 124 Arm + 125 Arm +126 Kasten +127 Kurbelwellenlager 128 rurbelstangen 129 Schwingarme 130 linke Gelenke 133 rechte Gelenke 134 rechte Gelenkte 135 linke Pleuelstangen 136 linke Pleuelstangen 137 rechte Pleuelstangen 138 rechte Pleuelstangen 139 linke Messerschuhgelenke 140 141 142 rechte Messerschuhgelenke 143 rechte Meseerschuhgelenke 144 linker Mähwerkschuh 145 rechter Mähwerkschuh 146 linker Mecserbalken 147 rechter Messerbalken 148 linker Zapfen 149 rechter Zapfen 149 Lochle iste +150 Konsole 160 Augen 170 oberes Auge 180 Gabelstücke 190 Spannschloß +191 Zwischenwelle 192 Mähmesser 191 Schwadbretter 192 Brücke 193 Transportgestell 194 Transportgestell 195 Vierkantzapfen LIST OF REFERENCE NUMERALS 1 frame of the working machine 2 bridge 3 supports 4 supports 5 cross members 6 longitudinal members 7 plate 8 brackets 9 upper bearing 10 middle Bearing 11 lifting cylinder + 12 upper swivel arm + 13 lower swivel arm 14 cross beam 15 Joint 16 Stop 17 Bracket + 18 Swivel arm 19 Joint 20 Bearing support 21 Cross member of the lower pivot arm 22 bearing 23 lower joint EUr lifting cylinder 24 upper joint for lifting cylinder + 25 lifting arm 26 upper joint on the lifting arm 27 lower Joint on the lift arm 28 consoles 29 plate 30 flange +31 cross member 32 console 39 joint 34 curved swing arm 35 joint +36 outside right +37 double knife cutting unit 38 Swath plate 39 guide rod 40 support 41 joint '4 ^ swing arm below 43 lower joint 44 Bolt 45 Web 46 Trunnion 47 Bearing 48 Washer 49 Screw +50 Swingarm above 51 lower joint 52 fork piece 53 bolt 54 outer shoe left 55 bridge 56 Bearings 57 crankshaft 58 cranks 59 rocker arm 60 bushes 61 bearings +62 hydraulic motor +63 hose line +64 hose line 65 hydraulic coupling 66 hydraulic coupling 66 Oil line 67 Oil line +68 Hydraulic pump +69 Oil reservoir 70 V-belt pulley 71 V-belt pulley 72 V-belt +73 Cross member 74 Lugs 75 Chain 76 77 Eyes 78 chain strands 100 Angular Falnsch 101 Inner Ring 102 Outer Ring 103 base 104 housing 105 housing +105 cams +106 cams 108 compression spring 109 pastes 110 eyes (on the floor) 111 yonsoles +112 bow-shaped frames +113 parallelogram rods below +114 parallelogram linkage above 115 joint above 116 joint below 117 brackets 118 ring drive 119 cover ring 120 mower rotor 121 meso blade 122 output pin +123 crankshaft + 124 arm + 125 arm +126 box +127 crankshaft bearings 128 crank rods 129 swing arms 130 left joints 133 right joints 134 right Steered 135 left connecting rods 136 left connecting rods 137 right connecting rods 138 right connecting rods 139 left knife shoe joints 140 141 142 right knife shoe joints 143 right mower shoe joints 144 left mower deck shoe 145 right mower deck shoe 146 left Mecserbalken 147 right cutterbar 148 left pin 149 right pin 149 Lochle iste +150 console 160 eyes 170 upper eye 180 fork pieces 190 turnbuckle +191 intermediate shaft 192 mower blades 191 swath boards 192 bridge 193 Transport rack 194 Transport rack 195 square tenons

Claims

P a t e n t a n s p r ü c h e Front mower for motorized agricultural machines, that is articulated to a lifting device by means of trailing, suspended rockers is attached and at least one cutter bar with motor-driven knives has, characterized in that the lifting device auC approximately in the longitudinal center There is a lifting arm (25) mounted on the front of the motorized agricultural machine, which is connected to a Parallelogram-forming swivel arms (12, 13) is so hinged that its front End when actuating the lifting device first up and then also opposite to the direction of travel, i.e. can be swiveled backwards.

2. Front mower, including according to claim 1, characterized in that that the two mower shoes carrying the two mower shoes at their lower ends were suspended afterwards Rockers (34,42) are hinged at their upper ends to a cross member (91), dtbram is rigidly attached to the front end of the lifting arm (25), and that the rocker (34, 42) with this cross member (25) together a known portal-shaped Build a mock-up.

3. Front mower according to claim 1 and 2, characterized in that at least one of the rockers (42) has a second running approximately parallel to it her rocker arm (50) forming a parallelogram is assigned, which the mower in each system of elevation leads roughly parallel to the ground surface.

4. Front mower according to claim 1-3, characterized in that at least a rocker arm (34) is arcuate and behind the tip of the one assigned to it Mower shoe (36) is hinged to this.

5. Front mAhwerk, in particular according to one of the preceding claims, characterized in that the double-knife cutting mechanism (37) has a per se known hydraulic motor (62) is driven, which via flexible hose lines (63,64) by a separate hydraulic pump (68) attached to the motorized agricultural machine sparatem Cl container (69) is applied.

5. Front mower according to one of the preceding claims, characterized in that that on the lifting arm (25! an additional cross-beam at a considerable distance above the bottom surface 11 is attached, the outer ends of which are adjustable in length Xetten, tie rods or similar are connected to the outer shoes (36, 54) of the mower, and that this cross member is connected to an additional swivel arm connected to the lifting arm (25) (18) is articulated in such a way that when the lifting device is actuated, the double-knife cutting mechanism is the first (37) and then the front end of the lifting arm (25) is raised and finally also swiveled back uifid.

7. Front mower according to one of the preceding claims, characterized in that that the cross member (31) in the working position at a considerable distance in front of and above of the cutting unit (37) in the working position is attached above the surface of the earth is, and that on the cross member (31) eyelets (77) for the Yette strands (78) one per se known game rescuers are attached.

8. Front mower, in particular according to claim 1, characterized in that as a trailing swing arm at the front end of the lifting arm (25) articulated bucket-shaped frame (112) is used, the middle part of which is designed as a box (126), each with a front ( 124) and rear (125), downwardly extending arm (124, 125), on each of which there are bearings (127) for a crankshaft (123), a draw shaft (191) and joints (130, 131) for two swing arms (129), each of which is used to drive a mower knife (192) of two hinged cutter bars (146, 147) opposite one another at the free lower end of the arms (124, 125).

9. Front mower according to claim 1-8, characterized in that the cutter bar (146, 147) can be folded outwards in the working position and towards the center in the driving position can be folded up in the vertical position and from a common drive device Driven by the motorized agricultural machine via cardan shafts or hydraulic drive means will.

10. Front mower according to one of the preceding claims, characterized in that that on the box (126) of the bow-shaped frame (112) but a parallelogram linkage (113, 114) a gear (118) is arranged adjustable in height, dn its down directed output shaft a known Mähkrcisel (120) with knife blades (121) is arranged, and that the gear (118) via a cardan shaft with the after At the front protruding pin of the crankshaft (123) for the drive of the two mower blades (192 is connected.

11. Front mower, in particular according to one of the preceding claims, characterized in that the U-shaped frame (112) on the outer ring (102) one Slewing ring is articulated, which is approximately horizontal in the working position and About spring-loaded Cams (105, 106) with an inner ring (101 is connected, which is attached to the angle flange for the front end of the lifting arm (25) is arranged so that the inner ring (101) in the working position is approximately vertical The pivot axis for the outer ring (102) is formed so that when one of the mowers is driven onto it If there is an obstacle, the outer ring can rotate to a limited extent around the inner ring.

12. Front mower, in particular according to one of the preceding approaches, characterized in that the rear arm (125) is provided with a bracket (150) is, on which the cutter bar Uber elastic traction means, which in an adjustable Attack the perforated rail, suspended ict that when the lifting arm (25) is raised, the cutter bar (146, 147) can initially be lifted into a horizontal swath position, and that the Frame (112) over an adjustable turnbuckle (190) and a chain with an approximately in the middle of the lifting arm (25) arranged articulation point is connected.