DE2746388A1 - Coupling for agricultural machine V=belt drive - has jockey pulley movable to establish or release drive by altering belt tension - Google Patents

Coupling for agricultural machine V=belt drive - has jockey pulley movable to establish or release drive by altering belt tension

Info

Publication number
DE2746388A1
DE2746388A1 DE19772746388 DE2746388A DE2746388A1 DE 2746388 A1 DE2746388 A1 DE 2746388A1 DE 19772746388 DE19772746388 DE 19772746388 DE 2746388 A DE2746388 A DE 2746388A DE 2746388 A1 DE2746388 A1 DE 2746388A1
Authority
DE
Germany
Prior art keywords
drive
belt
jockey pulley
coupling
establish
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE19772746388
Other languages
German (de)
Inventor
Hans O Schroeter
Hans-Juergen Schroeter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19772746388 priority Critical patent/DE2746388A1/en
Publication of DE2746388A1 publication Critical patent/DE2746388A1/en
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H7/0827Means for varying tension of belts, ropes, or chains for disconnecting the drive

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

The coupling for a V-belt drive has a jockey pulley (3) at a run of the belt between a driving and a driven pulley (1, 2). The jockey pulley is mounted at one end of a bell crank lever, (4, 4'). The other arm of the bell crank is connected by a link (7) to a hand lever (8) so that the jockey pulley can be moved between a position in which the belt is tight and drive is established or the belt is slack and drive ceases.

Description

Schaltbare Antriebsvorrichtung mit Switchable drive device with

Keilriemenb Die Erfindung bezieht sich aui eine schaltbare Antriebsvorrichtung mit einer Antriebs- und einer Abtriebsrlemenscheibe und mindestens einem Keilriemen, dessen Spannung zum Ein-und Ausschalten mit einem Schalthebel veränderbar ist, insbesondere für LandunschinenO Bei größeren übertragenen Antriebsleistungen ist die am Schalthebel auizuwendende Kraft zur Erzielung der erforderlichen Keilriemen-Spannung so groß, daß entweder der Kraftaufwand am Schalthebel zu groß wird oder der Hebelweg. V-belt The invention relates to a switchable drive device with a drive pulley and a driven pulley and at least one V-belt, the voltage of which can be changed for switching on and off with a shift lever, in particular for LandunschinenO In the case of larger transmitted drive powers, the is on the gearshift lever The force to be used to achieve the required V-belt tension is so great that that either the effort on the shift lever is too great or the lever travel.

Die Erfindung hat die Aufgabe, die am Ilandhebel aufzuwendende Betätigungskraft und/oder den Beteitigungsweg zu vermindern.The invention has the task of providing the actuating force to be used on the Iland lever and / or to reduce the participation path.

Die Aufgabe wird dadurch gelöst, daß bei der eingangs beschriebenen schaltbaren Antriebsvorrichtung der Schalthebel mit einer vorgespannten und in einer Endlage über Totpunkt verriegelbaren Feder verbunden ist, deren Vorspannung mit wachsender Keilriemen-Spannung abniaaat. Auf diese Weise wird die am Schalthebel auizuwendende Betätigungskraft zur Erzielung der Keilriemen-Spannung durch die Federkrait vermindert, bzw. aufgehoben. Außerdem kann das sonst eriorderliche Gesperre zum Feststellen des Schalthebels wegfallen. Dabei ist der Aufwand gering und die Vorrichtung ohne große Kosten herzustellen.The object is achieved in that in the case of the initially described switchable drive device of the shift lever with a biased and in one End position is connected to dead center lockable spring, the preload with increasing V-belt tension abniaaat. This way, the one on the gear lever Actuating force to be used to achieve the V-belt tension through the spring force reduced or canceled. In addition, the otherwise necessary lock to the No need to lock the shift lever. The effort and the device are low to manufacture without great expense.

Ein Ausführungsbeispiel der Erfindung ist auf der Zeichnung dargestellt.An embodiment of the invention is shown in the drawing.

Eine Antriebsscheibe 1 und eine Abtriebsscheibe 2 sind durch Keilriemen 6 mieinander verbunden, deren Spannung über eine Laufrolle 3 veränderbar ist. Die Laufrolle 3 ist auf einem hebel 4 drehbar gelagert, der bei 5 um eine gestellfeste Achse schwenkbar und durch eine Verbindungsstange 7 mit einem bei 13 gestellfest gelagerten Schalthebel 8 verbunden ist. Die Verbindungsstange 7 greift an dem freien Hebelarm 4' an. Bei Schwenkung des Schalthebels 8 im Uhrzeigersinn wird die Keilriemen-Spannung erhöht, so daß die Abtriebsscheibe 2 mitgenommen wird. Bei der gezeichneten Ausschaltstellung der Antriebsvorrichtung werden die Keilriemen 6 durch Außenftiiirungen 14, 15, welche gestellfest angebracht sind, und eine weitere Außenführung, die mit dem nebel 4 verbunden ist, so gehalten, daß die Antriebsscheibe keine Berührung mit den Keilriemen hat.A drive pulley 1 and a driven pulley 2 are by V-belts 6 connected to one another, the tension of which can be changed via a roller 3. the Roller 3 is rotatably mounted on a lever 4, which is at 5 to a fixed axis pivotable and by a connecting rod 7 with a at 13 fixed to the frame mounted shift lever 8 is connected. The connecting rod 7 engages the free lever arm 4 '. When turning the shift lever 8 clockwise the V-belt tension is increased so that the driven pulley 2 is taken along. In the illustrated switch-off position of the drive device, the V-belts 6 through external ducts 14, 15, which are fixed to the frame, and another External guide, which is connected to the fog 4, held so that the drive pulley has no contact with the V-belt.

Am Schalthebel 8 ist bei 9 ein sichelförmiges Zugglied 12 gelenkig angeschlossen, an dessen freiem Ende eine vorgespannte Zugfeder 10 verankert ist, die bei 11 gestellfest eingehängt ist. Bei der strichpunktiert gezeichneten Schaltstellung mit gespanntem Keilriemen-Antrieb erhält der Schalthebel 8 durch die Federspannung ein Drehmoment im Uhrzeigersinn. Bei der Anfangsstellung mit ausgeschaltetem Antrieb ist die Feder 10 durch Überschreiten einer Totpunktlage verriegelt und hält den Schalthebel 8 in dieser Stellung, wobei der Schalthebel 8 sich gestellfest abstützt.A sickle-shaped tension member 12 is articulated at 9 on the shift lever 8 connected, at the free end of which a pretensioned tension spring 10 is anchored, which is attached to the frame at 11. In the switching position shown in dash-dotted lines When the V-belt drive is tensioned, the shift lever 8 is provided by the spring tension a clockwise torque. In the initial position with the drive switched off the spring 10 is locked by exceeding a dead center position and holds the Shift lever 8 in this position, the shift lever 8 being supported on the frame.

Durch die Auswahl einer geeigneten Federkraft bleibt die erforderliche Keilriemen-Spannung ohne Aufwendung einer Betätigungskraft am Schalthebel 8 aufrechterhalten. Die Betätigungskraft am Schalthebel zum Ausschalten des Antriebs ist dann sehr klein, da gegen die Vorspannung der Feder 10 die Keilriemen-Spannung wirkt. Die schaltbare Antriebsvorrichtung laßt sich deshalb mit sehr kleiner Betätigungskraft und kleinem Betätigungsweg bedienen.By selecting a suitable spring force, the required one remains Maintain the V-belt tension without applying an actuating force on the shift lever 8. The actuation force on the switch lever to switch off the drive is then very small, since the V-belt tension acts against the bias of the spring 10. The switchable one Drive device can therefore be with a very small operating force and small Operate actuation path.

LeerseiteBlank page

Claims (1)

Patent - Anspruch. Patent claim. Schaltbare Antriebsvorrichtung mit einer Antriebs- und einer Abtriebsriemenscheibe und mindestens einem Iteilriemen, dessen Spannung zum Ein- und Ausschalten mit einem Schalthebel ver..nderbar ist, insbesondere für Landmaschinen, dadurch gekennzeichnet, daß der Schalthebel (8) mit einer vorgespannten und in einer Endlage über Totpunkt verriegelbaren Feder (10) verbunden ist, deren Vorspannung mit wachsender Keilriemen-Spannung abnimmt.Switchable drive device with a drive pulley and a driven pulley and at least one Iteilriemen whose tension for switching on and off with a Shift lever can be changed, in particular for agricultural machinery, characterized in that the shift lever (8) with a preloaded and in an end position over dead center lockable spring (10) is connected, the pretension of which with increasing V-belt tension decreases.
DE19772746388 1977-10-14 1977-10-14 Coupling for agricultural machine V=belt drive - has jockey pulley movable to establish or release drive by altering belt tension Ceased DE2746388A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772746388 DE2746388A1 (en) 1977-10-14 1977-10-14 Coupling for agricultural machine V=belt drive - has jockey pulley movable to establish or release drive by altering belt tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772746388 DE2746388A1 (en) 1977-10-14 1977-10-14 Coupling for agricultural machine V=belt drive - has jockey pulley movable to establish or release drive by altering belt tension

Publications (1)

Publication Number Publication Date
DE2746388A1 true DE2746388A1 (en) 1979-04-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772746388 Ceased DE2746388A1 (en) 1977-10-14 1977-10-14 Coupling for agricultural machine V=belt drive - has jockey pulley movable to establish or release drive by altering belt tension

Country Status (1)

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DE (1) DE2746388A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504602C1 (en) * 1985-02-11 1986-08-21 Ering Gmbh Metallwarenfabrik, 8300 Ergolding Mobile lawn-treating appliance with a drive motor for the treatment tool and for the travelling drive
FR2748077A1 (en) * 1996-04-25 1997-10-31 Amazone Machines Agricoles Sa Vee belt and pulley drive system for light transmissions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1861801U (en) * 1962-09-26 1962-11-08 Fahr Ag Maschf DEVICE FOR TENSIONING A TORQUE TRANSMISSION BELT.
DE6919331U (en) * 1969-05-13 1970-10-15 Massey Ferguson Gmbh BELT DRIVE, IN PARTICULAR FOR COMBINE HARVESTERS OR THE LIKE.
DE2657664A1 (en) * 1975-12-21 1977-06-30 Hazime Takano COUPLING FOR BELT DRIVE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1861801U (en) * 1962-09-26 1962-11-08 Fahr Ag Maschf DEVICE FOR TENSIONING A TORQUE TRANSMISSION BELT.
DE6919331U (en) * 1969-05-13 1970-10-15 Massey Ferguson Gmbh BELT DRIVE, IN PARTICULAR FOR COMBINE HARVESTERS OR THE LIKE.
DE2657664A1 (en) * 1975-12-21 1977-06-30 Hazime Takano COUPLING FOR BELT DRIVE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3504602C1 (en) * 1985-02-11 1986-08-21 Ering Gmbh Metallwarenfabrik, 8300 Ergolding Mobile lawn-treating appliance with a drive motor for the treatment tool and for the travelling drive
FR2748077A1 (en) * 1996-04-25 1997-10-31 Amazone Machines Agricoles Sa Vee belt and pulley drive system for light transmissions

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Legal Events

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8110 Request for examination paragraph 44
8131 Rejection