EP0043916A1 - Fahrantrieb für eine Walze - Google Patents

Fahrantrieb für eine Walze Download PDF

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Publication number
EP0043916A1
EP0043916A1 EP81104497A EP81104497A EP0043916A1 EP 0043916 A1 EP0043916 A1 EP 0043916A1 EP 81104497 A EP81104497 A EP 81104497A EP 81104497 A EP81104497 A EP 81104497A EP 0043916 A1 EP0043916 A1 EP 0043916A1
Authority
EP
European Patent Office
Prior art keywords
rotation
engaging
axis
pinion gear
drum
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.)
Granted
Application number
EP81104497A
Other languages
English (en)
French (fr)
Other versions
EP0043916B1 (de
Inventor
Robert Edwin Moss
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor 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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Publication of EP0043916A1 publication Critical patent/EP0043916A1/de
Application granted granted Critical
Publication of EP0043916B1 publication Critical patent/EP0043916B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/26—Rollers therefor; Such rollers usable also for compacting soil self-propelled or fitted to road vehicles

Definitions

  • the invention relates to a drive mechanism and, more particularly, to a drive mechanism in which the means for driving and means for blocking rotation of the mechanism are oriented perpendicular to the element upon which they act.
  • a drive mechanism is commonly mounted within a drum or roller of a compactor to rotate the drum.
  • a vibratory compactor a vibrating mechanism is also positioned within the drum to impart vibratory forces to the drum.
  • U.S. Patent 4,108,009 which issued to Fuchigami on August 22, 1978. If both the drive and vibrating mechanisms are utilized, the amount of space within the drum can become very limited.
  • a hydraulic motor which provides the rotational input to the drive mechanism, outside of the drum.
  • Such a mounting arrangement is shown in U.S. Patent 3,741,669 which issued on June 26, 1973 to Harris. In certain work environments, such a mounting arrangement can subject the exteriorly mounted components to damage from, for example, contacting obstructions in turning the associated vehicle.
  • the present invention is directed to overcoming one or more of the problems as set forth above.
  • apparatus in one aspect of the present invention, includes a frame, a driven member, and a first element rotatable relative to the frame.
  • a driving element is mounted on and rotatable with the first element about an axis of rotation of said first element.
  • Means are provided for engaging and rotating the driving element and for engaging and blocking from rotation said driving element.
  • Said means each define an axis of rotation oriented at a location perpendicular to the axis of rotation of the first element.
  • Final drive means is provided for transferring rotational motion from the first element to the driven member.
  • the apparatus is used, for example, within a drum of a vibratory compactor for rotating the drum.
  • the orientation of the engaging and rotating means and the engaging and blocking means reduces the width of the apparatus to provide more space within the drum for other components and to eliminate the necessity of mounting elements outside the drum where they could be damaged.
  • apparatus 10 is shown, for example, associated with a vibratory compactor 12 which includes a driven member or drum 14-and a yoke 16 which is a portion of a frame 18.
  • the apparatus is a right angle drive mechanism which receives a power input from an associated vehicle (not shown) and subsequently drives the drum at a desired rotational speed.
  • the compactor is connected to the vehicle by the frame at a pivot point 19.
  • a vibratory mechanism (not shown) which receives a power input from the vehicle and typically creates an unbalanced rotational output for establishing vibratory forces on the drum.
  • Vibratory compactors are. well known in the compacting art and are commonly used in land fill or construction operations which require compacting the earth, fill material or road surfacing material to specific densities.
  • the drive mechanism 10 has a first element or shaft 20 rotatable relative to the yoke 16 on bearings 24 and accessible through removal of a plate 25.
  • the shaft is rotatable about its axis of rotation 26•which is substantially the same as the centerline or axis of rotation 28 of the drum about which the frame 18 connects to said drum.
  • Mounted on the shaft through splines is a driving element 30 directly supported by the bearings 24 and shown including a bevel gear 32, which is rotatable with the shaft about its axis of rotation.
  • First means 34 is provided for engaging and rotating the driving element and second means 36 is provided for engaging and controllably blocking from rotation, or braking the rotation of, the driving element.
  • the first means includes a first pinion gear 38 postioned in engagement with a bevel gear power means 40, such as a hydraulic motor.
  • the second means includes a brake 42 and a second pinion gear 44 rotationally associated with the brake and positioned in engagement with the bevel gear.
  • Each of said means defines an axis of rotation 46,48 oriented perpendicular to the axis of rotation 26 of the shaft.
  • said axes are substantially the same such that the pinion gears drive the shaft on opposite sides of the shaft.
  • each of the pinion gears includes a shaft portion 50',50" having the related axis of rotation 46,48 and being rotatably supported on the yoke 16 by bearings 52',52".
  • the shaft portion 50' of the first pinion gear 38 extends toward and is rotatably connected to the hydraulic motor 40 by coupling 152.
  • the shaft portion 5 0 " of the second pinion gear 44 extends to the brake 42 which has a friction 54 and a reaction 56 disc (shown as a plurality).
  • One set of said discs, shown as the reaction discs, is fixed from rotation relative to the frame through a splined connection 58 with the frame.
  • the other set of said discs shown as the friction discs, is rotatable with the second pinion gear also through a splined connection 60,.
  • the discs are normally frictionally engaged one with the other owing to the biasing force of frusto-conical washers 62.
  • a piston assembly 64 is hydraulically actuatable to controllably release the brake by overcoming the force of the washers. Such brake operation is well known, particularly in the work vehicle art.
  • final drive means 66 transfers rotational motion from the shaft to the drum 14 in order to drive the drum.
  • the final drive means shown as a planetary gear assembly 68, includes first and second motion transfer elements 70,72 having a preselected drive ratio relationship one relative to the other.
  • the first transfer element, a sun element 74 of the planetary gear assembly shown carried on the shaft, is rotatable with said shaft.
  • the second transfer element, shown as a carrier element 76 of the planetary gear assembly is rotatable with the drum owing to its connection with said drum.
  • the planetary gear assembly also includes a planet element 78 and a ring element 80 which is fixed from rotation relative to the yoke 16 through a splined connection 82.
  • the ring element can also be connected to the drum with the carrier element fixed relative to the frame.
  • Such planetary gear assemblies are well known in the art and are commonly used for providing a speed reducing or increasing function on a drive mechanism through the drive ratio established by the relationship of the teeth on the sun, planet and ring elements.
  • the brake discs 54,56 are released from frictional engagement by actuating the piston assembly 64 and the hydraulic motor 40 is actuated to rotate the first pinion gear 38 and drive the shaft 20 through the bevel gear 32.
  • the rotating shaft causes the sun element 74 to rotate which results in driving the drum 14 with the rotating carrier element 76.
  • the ratio of the bevel 32 and pinion 38,44 gears and the elements 74,78,80 of the planetary gear assembly 68 establish the rotational output speed of the carrier, and thus the rotational speed of. the drum, relative to the rotational speed of the hydraulic motor.
  • the drum 14 can be slowed or entirely braked by frictionally engaging the friction and reaction discs 54,56 of the brake 42. This is accomplished by decreasing or eliminating the fluid pressure in the piston assembly 64 acting to overcome the biasing force of the frusto-conical washers 62 which, during operation, is usually maintained at sufficient magnitude to overcome the biasing force of the washers that otherwise acts to move the discs into frictional engagement.
  • the drive mechanism 10 presents a compact and space efficient apparatus owing to its "right angle" drive arrangement derived from the relationship of the bevel 32 and pinion 38,44 gears.
  • the shaft 20, bevel gear, pinion gears, hydraulic motor 40, brake 42 and planetary gear assembly 68 are all located within the drum 14. This eliminates the need to position elements externally of the drum, such as on the frame 18, where they might be damaged in the work environment.
  • the width of the drive mechanism is reduced owing to the "right angle" arrangement of the motor 40 and brake 42 and the use of the single planetary gear assembly 68 for the final drive. This results in additional space within the drum for mounting the vibration mechanism which imparts the vibratory forces to the drum. Further, removal of the plate 25, allows removal of the shaft 20 from its splined connections to permit towing of the compactor.12 without damage to the motors therein if a breakdown does occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Retarders (AREA)
EP81104497A 1980-07-14 1981-06-11 Fahrantrieb für eine Walze Expired EP0043916B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
WOPCT/US80/00904 1980-07-14
PCT/US1980/000904 WO1982000309A1 (en) 1980-07-14 1980-07-14 Drive mechanism

Publications (2)

Publication Number Publication Date
EP0043916A1 true EP0043916A1 (de) 1982-01-20
EP0043916B1 EP0043916B1 (de) 1984-12-05

Family

ID=22154448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81104497A Expired EP0043916B1 (de) 1980-07-14 1981-06-11 Fahrantrieb für eine Walze

Country Status (4)

Country Link
EP (1) EP0043916B1 (de)
JP (1) JPS57501092A (de)
DE (1) DE3167581D1 (de)
WO (1) WO1982000309A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031657A1 (en) * 1994-05-13 1995-11-23 Asea Brown Boveri Ab Driving unit for an industrial robot

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1625195A1 (de) * 1967-06-14 1970-03-05 Zahnradfabrik Siegfried F Tand UEbersetzungsgetriebe
DE1784306A1 (de) * 1967-08-07 1970-06-11 Hyster Co Strassenwalze
DE1912999A1 (de) * 1969-03-14 1970-10-01 Bopparder Maschb Gmbh Bomag Tandem-Doppelvibrationswalze zur Bodenverdichtung
DE1658546A1 (de) * 1966-12-22 1970-10-22 Stavostroj Np Selbstfahrende Vibrationsstrassenbauwalze
AT287048B (de) * 1965-03-20 1971-01-11 Benno Kaltenegger Tandem-Straßenwalze
DE2107793A1 (de) * 1971-02-18 1972-08-31 Wilhelm Weller Herstellung und Vertrieb von Straßen-Walzen GmbH, 4000 Düsseldorf Getriebe für den Fahrantrieb einer Straßenwalze

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1696837A (en) * 1927-05-12 1928-12-25 Christiansen Nels Intermediate gear for automobiles
US2078161A (en) * 1934-03-21 1937-04-20 Gen Electric Gearing
US2198397A (en) * 1937-03-19 1940-04-23 Szekely Company Inc Variable speed transmission
US3183804A (en) * 1961-04-19 1965-05-18 Robert G Letourneau Earth compacting machine
AT267988B (de) * 1967-03-10 1969-01-27 Losenhausen Maschinenbau Ag Rüttelwalze
USRE27840E (en) * 1971-04-08 1973-12-11 Tandem roller
US4186625A (en) * 1976-06-21 1980-02-05 Chamberlain Alan H Reversible transmission
DE2710708C3 (de) * 1977-03-09 1979-12-20 Losenhausen Maschinenbau Ag, 4000 Duesseldorf Lagerung für Walzkörper bei Verdichtungswalzen
DE2803172C2 (de) * 1978-01-25 1983-01-05 Losenhausen Maschinenbau AG, 4000 Düsseldorf Rüttelwalze mit zweigeteilter Walzentrommel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT287048B (de) * 1965-03-20 1971-01-11 Benno Kaltenegger Tandem-Straßenwalze
DE1658546A1 (de) * 1966-12-22 1970-10-22 Stavostroj Np Selbstfahrende Vibrationsstrassenbauwalze
DE1625195A1 (de) * 1967-06-14 1970-03-05 Zahnradfabrik Siegfried F Tand UEbersetzungsgetriebe
DE1784306A1 (de) * 1967-08-07 1970-06-11 Hyster Co Strassenwalze
DE1912999A1 (de) * 1969-03-14 1970-10-01 Bopparder Maschb Gmbh Bomag Tandem-Doppelvibrationswalze zur Bodenverdichtung
DE2107793A1 (de) * 1971-02-18 1972-08-31 Wilhelm Weller Herstellung und Vertrieb von Straßen-Walzen GmbH, 4000 Düsseldorf Getriebe für den Fahrantrieb einer Straßenwalze

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995031657A1 (en) * 1994-05-13 1995-11-23 Asea Brown Boveri Ab Driving unit for an industrial robot

Also Published As

Publication number Publication date
WO1982000309A1 (en) 1982-02-04
JPS57501092A (de) 1982-06-24
EP0043916B1 (de) 1984-12-05
DE3167581D1 (en) 1985-01-17

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