US3527315A - Articulated motor grader - Google Patents

Articulated motor grader Download PDF

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Publication number
US3527315A
US3527315A US3527315DA US3527315A US 3527315 A US3527315 A US 3527315A US 3527315D A US3527315D A US 3527315DA US 3527315 A US3527315 A US 3527315A
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unit
motor grader
wheels
pivotally
wheel
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Andrew V Hampton
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Fiatallis Europe SpA
Allis Chalmers Corp
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Allis Chalmers Corp
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Assigned to FIATALLIS EUROPE S.P.A. reassignment FIATALLIS EUROPE S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FIATALLIS NORTH AMERICA, INC., A DE CORP
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08Superstructures; Supports for superstructures
    • E02F9/0841Articulated frame, i.e. having at least one pivot point between two travelling gear units
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7636Graders with the scraper blade mounted under the tractor chassis

Description

Sept 8, 1970 A. v. HAMPTON 3,527,315

AR'II CULATED MOTOR GRADER Filed May 9, 1968 2 Sheets-Sheet 1 mmmkgk .QWRWW 61). Z a "WW 22 W I M WpM/w Sept. 8, 1970 A. v. HAMPTON ARTICULATED MOTOR GRADER 2 Sheets-Sheet 2 Filed May 9. 1968 United States Patent 3,527,315 ARTICULATED MOTOR GRADER Andrew V. Hampton, Springfield, Ill., assignor to Allis- Chalmers Manufacturing Company, Milwaukee, Wis. Filed May 9, 1968, Ser. No. 727,983 Int. Cl. B60k 17/30 U.S. Cl. 180-51 2 Claims ABSTRACT OF THE DISCLOSURE A motor grader having a rear two-wheel tractor unit is articulately connected to the rear end of a tool frame, and the front end of the tool frame is articulately connected to a front wheel drive unit. The front wheel drive unit includes an oscillating axle assembly with a pair of leanable drive wheels. The front wheel unit incorporates the features of articulated or wagon steer relative to the tool frame, oscillation of the axle thereof about a longitudinal axis, power driven wheels which are leanable.

This invention relates to a motor grader having a front wheel drive unit which is articulatively connected to the tool frame for pivotable movement about a vertical axis and has an oscillating axle assembly with wheels which may be laterally leaned.

Heretofore, motor graders of various types have been developed and marketed, some of the prior rnotor graders have employed double articulation steering and some have employed powered front wheels. While these prior motor graders have enjoyed some measure of success, there still existed a need for improved performance and capabilities. The present invention provides a double articulated motor grader having a wagon steer type front unit with wheels that are leanable and power driven. Motor graders employing the present invention have improved maneuverability and work capability, particularly when used in ditching and bank slope operations.

It is an object of the present invention to provide an improved motor grader having double articulation steering.

It is a further object of this invention to provide an articulated front wheel unit for a motor grader which has front axle oscillation and power driven wheels which may be leaned.

It is a further object of the present invention to provide an improved motor grader having a rear two-wheel power unit which is substantially interchangeable with the rear power unit of an articulated loader.

It is a further object of this invention to provide an improved articulated motor grader of the type hereinbefore outlined which is relatively low in initial, cost, has a high horsepower-to-weight ratio, and has improved working capability.

These and other objects of this invention will be apparent to those familiar with the art when the following description is read in conjunction with the drawings in which:

FIG. 1 is a side view of the motor grader incorporating the present invention;

FIG. 2 is a vertical section through the front articulation joint of the motor grader;

FIG. 3 is a top view of the motor grader shown in FIG. 1; and

FIG. 4 is an enlarged front view of the motor grader with parts thereof shown in section.

Referring to FIG. 1, the motor grader 11 is made up of three major components; namely, a rear power unit 12, an elongated tool supporting frame 13, and a front drive unit 14. The rear power unit 12 is essentially the twowheel power unit of an articulated tractor loader and,

ICC

as illustrated, such unit has an internal combustion engine 15 providing power to the rear wheels 14 through a change speed transmission 16. The rear unit 12 also includes an operators station 17 at which steering controls, in the form of a steering wheel 18, are located. The longitudinally extending tool supporting frame 13 has its rear end articulately connected to the front of the rear unit by a pair of vertically spaced aligned pivot pins 21, 22.

As shown in FIG. 3, the tool supporting frame 13 and rear unit 12 are steered relative to one another about the vertical articulation axis 23 by a pair of doubleacting hydraulic jacks 24, 26 which have their cylinder ends pivotally connected to the rear unit 12 and their piston rods pivotally connected to the tool supporting frame 13. The front unit includes a hitch frame 31 which is pivotally connected to the front end of the tool supporting frame by a pivot pin 32 and an antifriction bearing 34. As shown in FIGS. 2 and 4, the front unit also includes an axle assembly 36 which has a cradle 35 with front and rear plates 44, 45 pivotally connected to the hitch member 31 on a longitudinal axis 37 by a pair of aligned pivot pins 38, 39. This permits oscillation of the axle assembly 36 about axis 37 within the limits imposed by abutments 86, 87 on the cradle 35 and abutments 88, 89 on plate of the intermediate hitch member 31. The vertical end plates 92, 93 of cradle 35 are sandwiched between the central axle housing portion 94 and housing extensions 57, 58, such components being held in assembly by fastening means such as cap screws, not shown. The input shaft 41 of the axle assembly 36 is connected in driven relation to an output shaft 42 of the transmission 16 by a power train 43 which extends through the hollow interior of frame 13. The axis of the input shaft 41 coincides with the vertical articulation axis 46. The front wheel unit 14 is steered relative to the tool supporting frame 13 about axis 46 by a pair of double-acting hydraulic jacks 47 and 48 which have their cylinders trunnion mounted on the tool supporting frame and their piston rods pivotally connected to the intermediate hitch member 31. The controls for the steering jacks 47, 48 include a hydraulic control valve, not shown, which is operatively connected to steering wheel 18.

A pair of wheel spindles 53, 54 are pivotally connected to axle housing extensions 57, 58 of assembly 36 for front wheel lean movement about longitudinal axes 61, 62. Front drive wheels 51, 52 are rotatably mounted on spindles 53, 54, respectively, and are connected in driven relation to input shaft 41 of the axle assembly 36 through a differential 56. As shown in FIG. 4, the drive to the front wheel 52 includes a jack shaft 96 and planetary gear set 97. A tie rod 63 is pivotally connected at its opposite ends to wheel spindles 53, 54 by pins 59, 60, and the lateral leaning of the wheels 51, 52 about axes 61, 62 is accomplished by power means in the form of hydraulic jacks 64, 66. As seen in FIGS. 2 and 3, the tie rod 63 includes an intermediate portion which lies between the pins 38, 39 and which is curved slightly to the rear to avoid interference with vertical input shaft 41. The hydraulic jacks 64, 66 have their cylinders pivotally connected to braces 67, 68 of cradle 35, and their piston rods pivotally connected to pivot pins 59, 60.

The tool supporting frame 13 has a draft member in the form of a socket 71 near its forward end to which a complementary hitch part, in the form of a ball member 72 of a drawbar and circle assembly 73, is connected. The earthworking blade 74 of the motor grader is mounted on the circle assembly 73 in a conventional manner for swinging adjustment about a vertical axis by a hydraulically powered drive unit 76. The blade 74 and circle assembly 73 are adjusted vertically by a pair of doubleacting hydraulic jacks 81, 82 which have their cylinders trunnion mounted to the tool supporting frame 13 and their piston rods pivotally connected to laterally spaced points on the circle assembly 13.

As shown in FIG. 3, the double articulated motor grader of the present invention may be articulately steered to the position shown in phantom lines 91. This position of the motor grader frame and front wheel unit is particularly useful in working in ditches and on banks or slopes. For instance, in cleaning up ditches, the rear power unit can remain on the shoulder of the road while the front wheels run in the ditch; or in working a slope, the front wheels can ride on the bank of a slope while the rear wheels travel at the base of the slope. When doing extended reach work, the rear wheels can be offset from the front wheels to provide good blade position without discharging dirt beneath the rear driving wheels.

It has also been found that the improved maneuverability of a motor grader using this invention permits snowplow operations to be accomplished more effectively with a higher degree of safety, particularly in mountainous terrain. The power unit need not travel close to the edge of the road during such snow plowing operations. The improved maneuverability of motor graders using the present invention makes such motor graders a markedly more versatile machine on a wide variety of earthmoving and grading projects. The articulated grader of the present invention does superior finishing work around culverts, driveways, buildings and other structures where maneuverability is an important factor in productivity. It has been found that a higher horsepower per unit weight ratio can be utilized in a machine incorporating the present invention; thus, increasing its work capability. Also, it has been found that effective performance is obtainable without the use of ta dem rear wheels, although tandem rear wheels could be used if desired. By locating the operators station 17 on the front of the tractor unit 12 in overlying relation to the vertical pivot axis 23, the operator is not only positioned where he has a good view of the Working tool or blade 74, but also will have a definite feel of the steered condition of the tractor unit 12 relative to the frame 13.

Although only one embodiment of the present invention has been illustrated and described, other embodiments may be envisioned by those familiar with the art without departing from the spirit of the invention.

The embodiments of the invention for which an exclusive property or privilege is claimed are defined as follows:

1. A double articulated earth-working machine comprising:

a tractor unit having ground engaging traction means and a source of power connected to said traction means,

a longitudinally extending tool supporting frame pivotally connected at its rear end to said tractor unit for steering movement about a vertical pivot axis, and

4 a front unit including a hitch member pivotally connected to the front end of said frame on a vertical steer axis and pivotable on said steer axis independently of pivotal movement of said frame about said vertical pivot axis, an axle assembly pivotally connected to said hitch member for oscillating movement about a longitudinal axis by a pair of longitudinally spaced pivot elements and wheel spindles pivotally connected, respectively, to transversely opposite ends of said axle assembly for lateral leaning movement about longitudinal tilt axes, drive wheels rotatably mounted on said spindles,

respectively, and an input shaft in said axle assembly mounted for rotation on said steer axis and connected to said drive wheels, tilt means operable to adjust said spindles relative to said axle assembly about said tilt axes including a transverse tie rod pivotally connected at its opposite ends to said spindles, respectively, at points thereon above said tilt axes and having an intermediate portion disposed between said pivot elements, power transmitting means interconnecting said source of power and said input shaft, and first and second steering jacks connecting said tractor unit and hitch member, respectively, with said frame for selective steering movement relative to the latter. 2. The invention of claim 1 and further comprising upper and lower pivot means pivotally interconnecting said hitch member and frame, said lower pivot means including a bearing encompassing the part of said power transmitting means connected to said input shaft.

References Cited UNITED STATES PATENTS 641,834 1/1900 Bullard -42 1,055,010 3/1913 Zager. 1,079,607 11/1913 Schieler 180-42 1,405,159 l/l922 Polaski et al. 180-42 2,130,274 9/1938 Harrison et al. 172-798 X 2,195,607 4/1940 Wilson et a1 172-799 X 2,494,324 1/ 1950 Wright 172-793 2,625,231 l/1953 Martin 180-49 2,748,509 6/1956 Brown et al. 172-799 3,431,741 3/1969 Kinnan 172-781 ROBERT E. PULFREY, Primary Examiner A. E. KOPECKI, Assistant Examiner US. Cl. X.R.

US3527315D 1968-05-09 1968-05-09 Articulated motor grader Expired - Lifetime US3527315A (en)

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US3527315A true US3527315A (en) 1970-09-08

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US (1) US3527315A (en)
DE (1) DE1923787A1 (en)
ES (1) ES366992A1 (en)
FR (1) FR2008150A1 (en)
GB (1) GB1224282A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3704754A (en) * 1970-02-19 1972-12-05 Layton Mfg Co Articulated vehicle having an adjustable grader blade thereon
DE2229333A1 (en) * 1971-06-14 1973-01-18 Caterpillar Tractor Co Coupling for articulated vehicle
US3789929A (en) * 1972-03-29 1974-02-05 R Leidig Three wheel all wheel hydraulic drive tractor
US3800903A (en) * 1972-01-17 1974-04-02 Caterpillar Tractor Co Coaxial steering wheels for an articulated motor grader
US3896894A (en) * 1973-01-24 1975-07-29 Caterpillar Tractor Co Means to transmit power across articulated vehicle hitch point
US3976146A (en) * 1975-03-13 1976-08-24 Bernard Desourdy Grader
US3991847A (en) * 1975-08-14 1976-11-16 Caterpillar Tractor Co. Steering system for an articulated vehicle
US4042053A (en) * 1974-12-24 1977-08-16 Allis-Chalmers Corporation Four-wheel drive tractor
US4055228A (en) * 1976-05-24 1977-10-25 Clark Equipment Company Drive line disconnect mechanism
US4094373A (en) * 1977-05-04 1978-06-13 Crow Arthur F Jun Method and apparatus for converting an agriculture machine to a tractor
EP0075482A2 (en) * 1981-09-22 1983-03-30 Royal Tractor Company, Inc. Articulated earth-working vehicle
US4565257A (en) * 1984-02-08 1986-01-21 J. I. Case Company Multi-mode steering system
US4679634A (en) * 1986-02-11 1987-07-14 Bulmahn Gerald L Apparatus for extending the frame of a tractor
US4693331A (en) * 1986-04-23 1987-09-15 Hiniker Company Tractor boom
US4802545A (en) * 1986-10-15 1989-02-07 J. I. Case Company Steering control system for articulated vehicle
EP1080621A1 (en) * 1999-08-31 2001-03-07 Reekie Manufacturing Ltd. Universal tool carrier
US20070068691A1 (en) * 2005-09-23 2007-03-29 Smart William J Motor grader with adjustable front wheel structure
US20130240282A1 (en) * 2012-03-13 2013-09-19 Reginald M. Bindl Electric Drive Axle Configuration
US20140060403A1 (en) * 2012-09-06 2014-03-06 Cnh America Llc Pull frame for an agricultural implement
US9637889B2 (en) 2015-06-12 2017-05-02 Cnh Industrial America Llc Automated moldboard draft control system and method
US20190063035A1 (en) * 2016-03-23 2019-02-28 Komatsu Ltd. Control method in motor grader and motor grader
IT201800004096A1 (en) * 2018-03-29 2019-09-29 Cnh Ind Italia Spa Motor grader provided with an aid to steering
USD880533S1 (en) * 2018-11-23 2020-04-07 Guangxi Liugong Machinery Co., Ltd. Motor grader
USD886161S1 (en) 2019-03-14 2020-06-02 Caterpillar Inc. Motor grader
USD887453S1 (en) 2019-03-14 2020-06-16 Caterpillar Inc. Motor grader

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2135573C2 (en) * 1971-07-16 1982-08-12 Layton Mfg. Co., Salem, Oreg., Us Grader with pivot coupled chassis parts - has front wheels longitudinally slidable in front chassis part and grader blade height adjustable on rear chassis part
DE3309119C2 (en) * 1983-03-15 1989-03-30 O & K Orenstein & Koppel Ag, 1000 Berlin, De

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US641834A (en) * 1899-04-11 1900-01-23 James H Bullard Combined driving and steering axle for automobile vehicles.
US1055010A (en) * 1912-01-12 1913-03-04 Robert E Zager Traction-vehicle.
US1079607A (en) * 1912-03-16 1913-11-25 Thomas Benton Snyder Transmission and steering mechanism for motor-driven vehicles.
US1405159A (en) * 1921-02-17 1922-01-31 Henry P Polaski Tractor drive gearing
US2130274A (en) * 1937-10-18 1938-09-13 John F Harrison Road working device
US2195607A (en) * 1940-04-02 Self-propelled road machine
US2494324A (en) * 1944-04-29 1950-01-10 Galion Iron Works & Mfg Co Road grader
US2625231A (en) * 1950-08-23 1953-01-13 Fred P Martin Drive axle mounted for swinging and rocking motion
US2748509A (en) * 1950-05-27 1956-06-05 Baldwin Lima Hamilton Corp Six wheel drive and steer road machine
US3431741A (en) * 1966-09-26 1969-03-11 Henkels & Mccoy Inc Articulated vehicle

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195607A (en) * 1940-04-02 Self-propelled road machine
US641834A (en) * 1899-04-11 1900-01-23 James H Bullard Combined driving and steering axle for automobile vehicles.
US1055010A (en) * 1912-01-12 1913-03-04 Robert E Zager Traction-vehicle.
US1079607A (en) * 1912-03-16 1913-11-25 Thomas Benton Snyder Transmission and steering mechanism for motor-driven vehicles.
US1405159A (en) * 1921-02-17 1922-01-31 Henry P Polaski Tractor drive gearing
US2130274A (en) * 1937-10-18 1938-09-13 John F Harrison Road working device
US2494324A (en) * 1944-04-29 1950-01-10 Galion Iron Works & Mfg Co Road grader
US2748509A (en) * 1950-05-27 1956-06-05 Baldwin Lima Hamilton Corp Six wheel drive and steer road machine
US2625231A (en) * 1950-08-23 1953-01-13 Fred P Martin Drive axle mounted for swinging and rocking motion
US3431741A (en) * 1966-09-26 1969-03-11 Henkels & Mccoy Inc Articulated vehicle

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3704754A (en) * 1970-02-19 1972-12-05 Layton Mfg Co Articulated vehicle having an adjustable grader blade thereon
DE2229333A1 (en) * 1971-06-14 1973-01-18 Caterpillar Tractor Co Coupling for articulated vehicle
US3800903A (en) * 1972-01-17 1974-04-02 Caterpillar Tractor Co Coaxial steering wheels for an articulated motor grader
US3789929A (en) * 1972-03-29 1974-02-05 R Leidig Three wheel all wheel hydraulic drive tractor
US3896894A (en) * 1973-01-24 1975-07-29 Caterpillar Tractor Co Means to transmit power across articulated vehicle hitch point
US4042053A (en) * 1974-12-24 1977-08-16 Allis-Chalmers Corporation Four-wheel drive tractor
US3976146A (en) * 1975-03-13 1976-08-24 Bernard Desourdy Grader
US3991847A (en) * 1975-08-14 1976-11-16 Caterpillar Tractor Co. Steering system for an articulated vehicle
US4055228A (en) * 1976-05-24 1977-10-25 Clark Equipment Company Drive line disconnect mechanism
US4094373A (en) * 1977-05-04 1978-06-13 Crow Arthur F Jun Method and apparatus for converting an agriculture machine to a tractor
EP0075482A2 (en) * 1981-09-22 1983-03-30 Royal Tractor Company, Inc. Articulated earth-working vehicle
EP0075482A3 (en) * 1981-09-22 1983-11-16 Royal Tractor Company, Inc. Articulated earth-working vehicle
US4565257A (en) * 1984-02-08 1986-01-21 J. I. Case Company Multi-mode steering system
US4679634A (en) * 1986-02-11 1987-07-14 Bulmahn Gerald L Apparatus for extending the frame of a tractor
US4693331A (en) * 1986-04-23 1987-09-15 Hiniker Company Tractor boom
US4802545A (en) * 1986-10-15 1989-02-07 J. I. Case Company Steering control system for articulated vehicle
EP1080621A1 (en) * 1999-08-31 2001-03-07 Reekie Manufacturing Ltd. Universal tool carrier
US20070068691A1 (en) * 2005-09-23 2007-03-29 Smart William J Motor grader with adjustable front wheel structure
US7735574B2 (en) * 2005-09-23 2010-06-15 Volvo Road Machinery, Ltd. Motor grader with adjustable front wheel structure
US20130240282A1 (en) * 2012-03-13 2013-09-19 Reginald M. Bindl Electric Drive Axle Configuration
US8640812B2 (en) * 2012-03-13 2014-02-04 Deere & Company Electric drive axle configuration
US20140060403A1 (en) * 2012-09-06 2014-03-06 Cnh America Llc Pull frame for an agricultural implement
US10104825B2 (en) * 2012-09-06 2018-10-23 Cnh Industrial America Llc Pull frame for an agricultural implement
US9637889B2 (en) 2015-06-12 2017-05-02 Cnh Industrial America Llc Automated moldboard draft control system and method
US20190063035A1 (en) * 2016-03-23 2019-02-28 Komatsu Ltd. Control method in motor grader and motor grader
US10704226B2 (en) * 2016-03-23 2020-07-07 Komatsu Ltd. Control method in motor grader and motor grader
IT201800004096A1 (en) * 2018-03-29 2019-09-29 Cnh Ind Italia Spa Motor grader provided with an aid to steering
EP3546658A1 (en) * 2018-03-29 2019-10-02 CNH Industrial Italia S.p.A. Motor grader with comfort steering
USD880533S1 (en) * 2018-11-23 2020-04-07 Guangxi Liugong Machinery Co., Ltd. Motor grader
USD886161S1 (en) 2019-03-14 2020-06-02 Caterpillar Inc. Motor grader
USD887453S1 (en) 2019-03-14 2020-06-16 Caterpillar Inc. Motor grader

Also Published As

Publication number Publication date
GB1224282A (en) 1971-03-10
FR2008150A1 (en) 1970-01-16
DE1923787A1 (en) 1969-11-13
ES366992A1 (en) 1971-06-16

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Owner name: FIATALLIS EUROPE S.P.A., ZONA INDUSTRIALE SURBO, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FIATALLIS NORTH AMERICA, INC., A DE CORP;REEL/FRAME:004389/0443

Effective date: 19850228