CH351470A - Device for tensioning the undrawn strand in a rotary drive - Google Patents

Device for tensioning the undrawn strand in a rotary drive

Info

Publication number
CH351470A
CH351470A CH351470DA CH351470A CH 351470 A CH351470 A CH 351470A CH 351470D A CH351470D A CH 351470DA CH 351470 A CH351470 A CH 351470A
Authority
CH
Switzerland
Prior art keywords
strand
arm
tensioning
rotary drive
lever
Prior art date
Application number
Other languages
German (de)
Inventor
Ackermann Martin
Original Assignee
C A Ackermann & Co
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 C A Ackermann & Co filed Critical C A Ackermann & Co
Publication of CH351470A publication Critical patent/CH351470A/en

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
    • F16H7/10Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1254Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
    • F16H7/1281Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
    • 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
    • F16H2007/0863Finally actuated members, e.g. constructional details thereof
    • F16H2007/0874Two or more finally actuated members

Landscapes

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

Description

  

  Einrichtung zum Spannen des nicht gezogenen     Trums    in einem Umlaufantrieb    In Umlaufantrieben, beispielsweise Seil- oder Ket  tentrieben, wird je nach der Umlaufrichtung     das    eine  oder das andere     Trum    durch die Drehkraft gezogen,  während das andere     Trum    lose bleibt und vielfach  gespannt werden muss.  



  Zum Zwecke, das lose     Trum    unabhängig von der  Umlaufrichtung spannen     zu    können, ist erfindungs  gemäss eine Einrichtung vorgesehen, die dadurch ge  kennzeichnet ist, dass zwischen den beiden     Trums     ein Lagerbock für einen dreiarmigen Hebel festste  hend angeordnet ist, wobei am ersten Arm dieses  schwenkbaren Hebels eine vom einen     Trum    getrie  bene Rolle und am zweiten Arm eine vom zweiten       Trum    getriebene Rolle angeordnet ist, während am  dritten     Arm    eine     Zugfeder    angreift, welche mit einem  annähernd entgegengesetzt zum     dritten    Hebelarm ge  richteten Arm des Lagerbockes verbunden ist.  



  Ein Ausführungsbeispiel der erfindungsgemässen  Einrichtung ist in der Zeichnung dargestellt.  



  Mit I ist das gezogene     Trum,    mit     II    das (nicht  gezogene) zu spannende     Trum    eines Umlauftriebes,  z. B. eines Kettentriebes, aber auch eines Seil- oder  Riementriebes bezeichnet. In einem zwischen den  beiden     Trums    feststehend montierten Lagerbock D  ist der     Mittelzapfen    e eines dreiarmigen Hebels E mit  den Armen<I>Ei,</I>     E2,   <I>Es,</I> frei drehbar gelagert. Im  freien Ende des Armes Ei ist ein Rad (Rolle)     F1     frei drehbar gelagert, das durch das     Trum    I mitge  nommen wird.

   Es kann sich bei einem     Kettentrieb     um ein Kettenrad, bei einem Seiltrieb um eine Seil  rolle oder bei einem Riementrieb um eine Riemen-    Scheibe handeln. Ein gleiches Rad (Rolle)     F2    ist     im     freien Ende des Hebelarmes     E2        gelagert    und     wird     vom     Seiltrum        II    mitgenommen.

   Das Ende des     dritten          Hebelarmes        E3    ist durch     eine        Zugfeder    C mit     einem     annähernd     entgegengesetzt    zu diesem Arm gerichte  ten Arm     D3    des Blockes D verbunden.  



  Die Wirkungsweise der Einrichtung ist folgende:  Da hier     angenommen    ist, dass das     Trum    I gezogen  wird, ist unter     Mitwirkung    der Räder     F1    und     F2    der  Hebel E so weit im     Gegenuhrzeigersinn    geschwenkt  worden, dass die Zugfeder rechts vom     Drehpunkt    .e  vorbeigeht und die beiden Räder     F1    bzw.     F2    an die       Seiltrums    I bzw.

       1I        angepresst    werden, wobei vor  allem das an sich lose     Trum        1I    gespannt     wird.    Wenn  die Drehrichtung des     Umlauftriebes    umgekehrt wird,  dreht sich der Hebel E im Uhrzeigersinn so weit, bis  die Zugfeder links vom Lagerzapfen e vorbeigeht  und wieder die     Spannung    des losen     Trums    bewirkt.



  Device for tensioning the undrawn strand in a rotary drive In rotary drives, such as rope or chain drives, one or the other strand is pulled by the torque depending on the direction of rotation, while the other strand remains loose and has to be tensioned many times.



  For the purpose of being able to tension the loose strand independently of the direction of rotation, a device is provided according to the invention, which is characterized in that a bearing block for a three-armed lever is arranged fixed starting between the two strands, with this pivotable lever on the first arm a roller driven by a strand and on the second arm a driven by the second strand roller is arranged, while a tension spring engages the third arm, which is connected to an approximately opposite to the third lever arm directed arm of the bearing block.



  An embodiment of the device according to the invention is shown in the drawing.



  With I is the drawn strand, with II the (not drawn) strand of a revolving drive to be tensioned, e.g. B. a chain drive, but also a cable or belt drive. The center pin e of a three-armed lever E with the arms <I> Ei, </I> E2, <I> Es, </I> is freely rotatable in a bearing block D fixedly mounted between the two strands. In the free end of the arm egg a wheel (roller) F1 is freely rotatably mounted, which is taken along by the strand I.

   A chain drive can be a chain wheel, a cable drive can be a pulley or a belt drive can be a pulley. An identical wheel (roller) F2 is mounted in the free end of the lever arm E2 and is taken along by the cable run II.

   The end of the third lever arm E3 is connected by a tension spring C with an arm D3 of the block D directed approximately opposite to this arm.



  The operation of the device is as follows: Since it is assumed here that the strand I is pulled, the lever E has been pivoted counterclockwise with the help of the wheels F1 and F2 so that the tension spring passes to the right of the pivot point e and the two wheels F1 or F2 to the rope run I or

       1I are pressed, with the loose strand 1I in particular being tensioned. If the direction of rotation of the epicyclic drive is reversed, the lever E rotates clockwise until the tension spring passes to the left of the bearing pin e and again causes the tension of the loose strand.

 

Claims (1)

PATENTANSPRUCH Einrichtung zum Spannen des nicht gezogenen Trums in einem Umlaufantrieb, dadurch gekennzeich- net, dass zwischen den beiden Trums ein Lagerbock für einen dreiarmigen Hebel feststehend angeordnet ist, wobei am ersten Arm dieses schwenkbaren Hebels eine vom einen Trum getriebene Rolle und am zwei ten Arm eine vom zweiten Trum getriebene Rolle angeordnet ist, während am dritten Arm eine Zug feder angreift, PATENT CLAIM Device for tensioning the undrawn strand in a rotary drive, characterized in that a bearing block for a three-armed lever is fixedly arranged between the two strands, with a roller driven by one strand on the first arm of this pivotable lever and on the second arm a roller driven by the second strand is arranged, while a tension spring engages the third arm, welche mit einem annähernd entgegen gesetzt zum dritten Hebelarm gerichteten Arm des Lagerbockes verbunden ist. which is connected to an arm of the bearing block which is directed approximately opposite to the third lever arm.
CH351470D 1957-07-10 1957-07-10 Device for tensioning the undrawn strand in a rotary drive CH351470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH351470T 1957-07-10

Publications (1)

Publication Number Publication Date
CH351470A true CH351470A (en) 1961-01-15

Family

ID=4509451

Family Applications (1)

Application Number Title Priority Date Filing Date
CH351470D CH351470A (en) 1957-07-10 1957-07-10 Device for tensioning the undrawn strand in a rotary drive

Country Status (1)

Country Link
CH (1) CH351470A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000026560A1 (en) * 1998-10-29 2000-05-11 INA Wälzlager Schaeffler oHG Clamping device for a traction means
FR2846065A1 (en) * 2002-10-22 2004-04-23 Dana Corp Belt tensioner assembly for internal combustion engine, has spring that biases tension rollers towards each other in order to maintain sufficient minimum tension of belt that wraps each pulley of crankshaft and accessory devices
EP1420191A2 (en) * 2002-11-15 2004-05-19 INA-Schaeffler KG Tensioner device for a traction drive

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000026560A1 (en) * 1998-10-29 2000-05-11 INA Wälzlager Schaeffler oHG Clamping device for a traction means
US6511393B1 (en) 1998-10-29 2003-01-28 Ina Walzlager Schaeffler Ohg Clamping device for a traction means
FR2846065A1 (en) * 2002-10-22 2004-04-23 Dana Corp Belt tensioner assembly for internal combustion engine, has spring that biases tension rollers towards each other in order to maintain sufficient minimum tension of belt that wraps each pulley of crankshaft and accessory devices
EP1420191A2 (en) * 2002-11-15 2004-05-19 INA-Schaeffler KG Tensioner device for a traction drive
EP1420191A3 (en) * 2002-11-15 2006-12-13 Schaeffler KG Tensioner device for a traction drive

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