DE474326C - Gripper wheels for road tractors - Google Patents

Gripper wheels for road tractors

Info

Publication number
DE474326C
DE474326C DEH113189D DEH0113189D DE474326C DE 474326 C DE474326 C DE 474326C DE H113189 D DEH113189 D DE H113189D DE H0113189 D DEH0113189 D DE H0113189D DE 474326 C DE474326 C DE 474326C
Authority
DE
Germany
Prior art keywords
gripper
road tractors
wheels
road
gripper wheels
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.)
Expired
Application number
DEH113189D
Other languages
German (de)
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.)
Hannoversche Maschinenbau AG
Original Assignee
Hannoversche Maschinenbau AG
Publication date
Priority to DEH113189D priority Critical patent/DE474326C/en
Application granted granted Critical
Publication of DE474326C publication Critical patent/DE474326C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C27/00—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels
    • B60C27/02—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels extending over restricted arcuate part of tread
    • B60C27/04—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels extending over restricted arcuate part of tread the ground-engaging part being rigid
    • B60C27/045—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels extending over restricted arcuate part of tread the ground-engaging part being rigid involving retractable devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Description

Greiferräder für Straßenzugmaschinen Bei elastisch bereiften Greiferrädern von Kraftfahrzeugen, insbesondere Straßenzugmaschinen, ist es bekannt, die Greifer als gemeinsam herausschwenkbare einarmige Hebel seitlich am Rade anzuordnen. Bei den bisher bekannt gewordenen Ausführungen dieser Art Greiferräder sind die Greifer während der Straßenfahrt so eingezogen, daß sie in dieser Ruhelage eine Verbreiterung der Lauffläche des eigentlichen Laufrades bilden, während beim Fahren auf weichem Boden die Greifer über den Umfang des Laufrades hinaus ausgeschwenkt werden und als Zacken wirkend in den Boden eingreifen. Hierbei ist ein Nachteil, daß die Wirkung der Greifer bei leichtem Boden nicht eintritt, sondern die Greifer nur in dem Boden totlaufen.Grab wheels for road tractors For grab wheels with elastic tires of motor vehicles, especially road tractors, it is known to use the gripper to be arranged as a single-armed lever that can be swiveled out together on the side of the wheel. at the previously known designs of this type of gripper wheels are the grippers so drawn in while driving on the road that it widened in this rest position the tread of the actual wheel while riding on soft Bottom the grippers are swung out beyond the circumference of the impeller and act as spikes in the ground. A disadvantage here is that the effect the grapple does not enter on light soil, but only the grapple in the ground run dead.

Die Erfindung vermeidet diesen Übelstand, indem sie die Greifer arri Rade bei Straßenfahrt in solcher Weise anordnet, daß die Greifer in der Ruhelage innerhalb des Umfanges des Laufrades zurückgezogen liegen, also überhaupt keine Wirkung ausüben, in ausgeschwenkter, also Arbeitslage, jedoch über den Umfang des Rades hinausragen und dabei eine nahezu ununterbrochene Lauffläche bilden, die infolge des Gewichtes der Maschine das Erdreich- fest zusammendrückt,' so daß die auf den Greiferkörpern vorgesehenen kurzen Greifspitzen im Boden auch wirklich einen Reibungswiderstand finden.The invention avoids this drawback by arri the gripper Rade when driving on the road is arranged in such a way that the gripper is in the rest position are withdrawn within the circumference of the impeller, i.e. none at all Have an effect in the swiveled-out, i.e. working position, but beyond the scope of the Rades protrude and thereby form an almost uninterrupted running surface, which as a result the weight of the machine compresses the soil firmly, 'so that the on the Gripper bodies provided short gripping tips in the ground also really have a frictional resistance Find.

In der Zeichnung ist ein derart ausgeführtes Greiferrad in Seitenansicht, in Abb. z in Arbeitslage, in Abb. a in Ruhestellung, dargestellt. Die als einarmige gekrümmte Hebel ausgebildeten Greiferkörper a sind mit ihrem am einen Ende vorgesehenen Drehpunkt b am Radkörper c, mit )ihrem andern Ende an die Stelze d angelenkt, welche ihrerseits an dem auf der Radnabe drehbaren Verstellring e angreift. Durch Drehung dieses gezahnten Ringes vermittels Zahnrad und Kurbel werden sämtliche Greifer gleichzeitig und gleichmäßig in dem einen oder anderen Sinne verstellt. Der Drehpunkt b steht so weit gegenüber demRadumfang zurück, daß die Greiferkörper im eingezogenen Zustande nicht den Boden berühren, in Arbeitsstellung indes eine möglichst lange, dem Radumfang konzentrische Lauffläche ergeben, deren Durchmesser gleich oder größer als der Durchmesser der .Gummibereifung ist.The drawing shows a gripper wheel designed in this way in a side view, in Fig. z in the working position, in Fig. a in the rest position. The one-armed curved levers formed gripper bodies a are provided with their at one end Pivot point b on the wheel body c, with) its other end articulated to the stilt d, which in turn engages the adjusting ring e rotatable on the wheel hub. By turning This toothed ring by means of a gearwheel and crank, all grippers become at the same time and adjusted evenly in one sense or another. The pivot point b is so far back against the wheel circumference that the gripper body in the retracted state do not touch the ground, but in the working position as long as possible, the circumference of the wheel result in concentric running surface whose diameter is equal to or greater than the diameter which is rubber tires.

Claims (1)

PATENTANSPRUCH: Greiferr ad für Kraftfahrzeuge, insbesondere Straßenzugmaschinen, mit seitlichen, als einarmige gekrümmte Hebel ausgebildeten und gemeinsam herauszubewegenden Greiferkörpern, die durch Stelzen und einen auf der Radnabe drehbaren Ring verstellbar sind, dadurch gekennzeichnet, daß die mit Greifspitzen versehenen Greiferkörper (a) in ausgeschwenkter Stellung eine nahezu geschlossene Lauffläche von gleichem oder größerem Durchmesser als die Gummibereifung bilden.PATENT CLAIM: Gripper wheels for motor vehicles, especially road tractors, with lateral, designed as a one-armed curved lever and to be moved out together Gripper bodies, which can be adjusted by stilts and a ring that can be rotated on the wheel hub are, characterized in that the gripper bodies provided with gripping points (a) in the swiveled-out position an almost closed running surface of the same or larger diameter than the rubber tires.
DEH113189D Gripper wheels for road tractors Expired DE474326C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH113189D DE474326C (en) Gripper wheels for road tractors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH113189D DE474326C (en) Gripper wheels for road tractors

Publications (1)

Publication Number Publication Date
DE474326C true DE474326C (en) 1929-04-02

Family

ID=7171747

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH113189D Expired DE474326C (en) Gripper wheels for road tractors

Country Status (1)

Country Link
DE (1) DE474326C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610898A (en) * 1950-07-06 1952-09-16 George L L Smith Tractor lug
US3995909A (en) * 1974-01-15 1976-12-07 Lely Cornelis V D Vehicle anti-skid mechanisms
FR2408472A1 (en) * 1977-11-09 1979-06-08 Niveau Ag ANTI-SLIP DEVICE INTENDED TO IMPROVE THE GRIP OF VEHICLE WHEELS ON ICE AND SNOWY SURFACES
CN105620188A (en) * 2016-03-29 2016-06-01 邹立新 Cross-country vehicle wheel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610898A (en) * 1950-07-06 1952-09-16 George L L Smith Tractor lug
US3995909A (en) * 1974-01-15 1976-12-07 Lely Cornelis V D Vehicle anti-skid mechanisms
FR2408472A1 (en) * 1977-11-09 1979-06-08 Niveau Ag ANTI-SLIP DEVICE INTENDED TO IMPROVE THE GRIP OF VEHICLE WHEELS ON ICE AND SNOWY SURFACES
CN105620188A (en) * 2016-03-29 2016-06-01 邹立新 Cross-country vehicle wheel

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