US3657830A - Bowl lift jack mounting for earthmoving scraper - Google Patents

Bowl lift jack mounting for earthmoving scraper Download PDF

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Publication number
US3657830A
US3657830A US9604A US3657830DA US3657830A US 3657830 A US3657830 A US 3657830A US 9604 A US9604 A US 9604A US 3657830D A US3657830D A US 3657830DA US 3657830 A US3657830 A US 3657830A
Authority
US
United States
Prior art keywords
bowl
spindle
jack
scraper
spreader
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 - Lifetime
Application number
US9604A
Other languages
English (en)
Inventor
Thomas R Hamilton
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
Application granted granted Critical
Publication of US3657830A publication Critical patent/US3657830A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/64—Buckets cars, i.e. having scraper bowls
    • E02F3/6454—Towed (i.e. pulled or pushed) scrapers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/64—Buckets cars, i.e. having scraper bowls
    • E02F3/65—Component parts, e.g. drives, control devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/64—Buckets cars, i.e. having scraper bowls
    • E02F3/65—Component parts, e.g. drives, control devices
    • E02F3/653—Connection mechanisms to the main body of the machine

Definitions

  • a draft frame is pivoted to the scraper bowl and hydraulic motors or jacks connect the frame and the bowl to pivot the bowl about the axis of its ground-engaging wheels to raise and lower its forwardly disposed cutting edge with respect to the ground. Since loading and stresses are very high, unintended motions occur between the draft frame and the bowl and it becomes desirable to secure the jack to these parts by means permitting universal movement.
  • Gimbals have been used to connect the jacks with the tubular spreader of the draft frame. In one known construction, the gimbals are supported on a heavy metal ring which embraces and is welded to the spreader. The rings are very large in some cases weighing several hundred pounds each and require a great deal of costly and time-consuming welding.
  • the present invention eliminates a great part of the weight of the known construction referred to and mounts the spindle portion of the gimbal within the tubular spreader. Since this lowers the position of the jack, a special fitting is provided to effect raising thereof to its proper position.
  • FIG. 1 is a view in side elevation of a scraper fitted with bowl lift jacks embodying the present invention
  • FIG. 2 is an enlarged sectional view showing the manner in which a jack is supported with respect to the tubular draft frame spreader and taken on the line lI-II of FIG. 3;
  • FIG. 3 is a fragmentary view looking downwardly on the structure shown in FIG. 2;
  • FIG. 4 is a fragmentary view in rear elevation of the assembly taken along the line IV-IV ofFIG. 2.
  • a scraper of well-known design is shown as having a tractor portion generally indicated at 10, a bowl l2 and a draft frame 14 connecting the tractor and bowl.
  • the draft frame 14 is pivoted to the sides of the bowl as at 18 and the bowl is held in a raised or carry position by hydraulic jacks, one of which is shown at 20, forming an adjustable connection between a tubular spreader shown at 22 which extends transversely of the draft frame and the bowl.
  • the bowl 12 Upon extension of the jack 20, the bowl 12 is permitted to swing downwardly about the center of its supporting wheels 24 until its cutting edge shown at 26 engages earth to be loaded into the bowl.
  • the usual apron 28 closes the forward end of the bowl when it is full and is manipulated by a jack partially shown at 30 and connected through a lever 32 and suitable linkage to the draft frame 14.
  • a jack partially shown at 30 and connected through a lever 32 and suitable linkage to the draft frame 14.
  • One of the jacks 20 is shown in FIG. 2 as connected to spreader 22 by a gimbal structure which has a spindle 34 supported for rotation on an axis parallel to the longitudinal center line of the tractor and scraper.
  • the spindle is supported in bearing bushings, one of which is shown at 36 and the other at 38.
  • the bushing 36 fits within a large tube 40 extending all of the way through the spreader tube and the bushing 38 is carried in a smaller ring-shaped part 42 which extends through only the front wall of the spreader.
  • the spindle is held against retraction by a plate 44 secured to its end as by cap screws 46.
  • the plate 44 is generally circular but has one flat side adjacent which a lug 48 is secured to the ring 42. This prevents excessive rotation of the spindle which might occur during assembly or when the jack is partially disconnected.
  • Reinforcing rings shown at 50 and 52 encircle the ends of the tube 40 and ring 42 and are welded to these parts and also to the spreader tube 22. Further reinforcing is provided by semi-circular webs 54 and 56 welded in place above and below the tube 40 within the spreader 22. Openings 58 and 60 are provided in the webs so that conduit and wiring for hydraulic and electrical components may be passed therethrough.
  • the spindle 34 carries a yoke 62 with outwardly extending journals 64 at its opposite sides as best shown in FIG. 3.
  • the 'ournals extend into suitable bushings carried by hearing brac ets 66 which, as shown in F IGS. 2 and 4, are held in place by cap screws 68 extending through a flange 70 at the lower end of the jack cylinder.
  • a circle of cap screws 72 also extends through this flange and secures a closure plate 74 to the end of the cylinder with a suitable opening therein through which a piston rod 76 extends.
  • the lower end of the rod 76 is connected by a ball and socket joint indicated at 80 to brackets 82, on a beam 84 (See also FIG. I) which extends transversely across the forward portion of the bowl between its sidewalls.
  • This assembly permits full universal movement of the jack with respect to the bowl and the draft frame so that the jack structure is not subjected to excessive stresses.
  • a tractor scraper combination which includes a tractor, a scraper with a wheel supported bowl and a draft frame connecting the tractor and bowl and including a spreader tube having a longitudinal axis between draft arms which are pivoted to the bowl, and at least two jack means extending between the spreader tube and the bowl for raising and lowering the forward end of the bowl about the axis of its wheels
  • the improvement which comprises a connection between the spreader tube and each jack means, each connection comprising a spindle extending through the longitudinal axis of the spreader tube, sleeve means extending entirely through the spreader tube, bearing bushings in the sleeve means receiving the spindle, and reinforcing webs extending between the exterior of the sleeve means and the interior of the spreader tube whereby the spindle is supported for rocking motion about an axis parallel to the longitudinal axis of the tractor and scraper, and a yoke extending rearwardly from the spindle including a pivotal connection between said

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Agricultural Machines (AREA)
US9604A 1970-02-09 1970-02-09 Bowl lift jack mounting for earthmoving scraper Expired - Lifetime US3657830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US960470A 1970-02-09 1970-02-09

Publications (1)

Publication Number Publication Date
US3657830A true US3657830A (en) 1972-04-25

Family

ID=21738664

Family Applications (1)

Application Number Title Priority Date Filing Date
US9604A Expired - Lifetime US3657830A (en) 1970-02-09 1970-02-09 Bowl lift jack mounting for earthmoving scraper

Country Status (3)

Country Link
US (1) US3657830A (enExample)
FR (1) FR2078387A5 (enExample)
GB (1) GB1329071A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893250A (en) * 1974-01-31 1975-07-08 Caterpillar Tractor Co Transport bracket for tractor scrapers and method for using the same
US4001956A (en) * 1975-09-17 1977-01-11 Caterpillar Tractor Co. Tractor scraper transportation and assembly therefor
US4142309A (en) * 1978-02-17 1979-03-06 Caterpillar Tractor Co. Scraper bowl-lift apparatus
US4328630A (en) * 1980-11-13 1982-05-11 General Motors Corporation Pullyoke assembly for a scraper

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451294A (en) * 1944-08-08 1948-10-12 Hydro Speed Equipment Co Power-operated scraper
US2535301A (en) * 1948-11-19 1950-12-26 Letourneau Inc Auxiliary fuel tank for tractorimplement combination
US2852870A (en) * 1955-05-04 1958-09-23 Caterpillar Tractor Co Two speed scraper apron
US3014291A (en) * 1960-05-11 1961-12-26 Int Harvester Co Hydraulic bowl lifting arrangement for earth working scrapers
US3015173A (en) * 1960-08-29 1962-01-02 Caterpillar Tractor Co Shipping accessory for tractor drawn scrapers
US3175846A (en) * 1963-05-28 1965-03-30 Robert L Arbaugh Trailer hitch
US3179440A (en) * 1962-07-06 1965-04-20 Robert Hudson Ltd Composite articulated vehicles
US3262513A (en) * 1962-10-02 1966-07-26 Henriksson Sune Torsten Combined power vehicle and trailer structure
US3529676A (en) * 1967-10-20 1970-09-22 Allis Chalmers Mfg Co Spring loaded coulter
US3553860A (en) * 1970-02-02 1971-01-12 Caterpillar Tractor Co Gimbal and universal coupling lift cylinder mounting for scrapers

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451294A (en) * 1944-08-08 1948-10-12 Hydro Speed Equipment Co Power-operated scraper
US2535301A (en) * 1948-11-19 1950-12-26 Letourneau Inc Auxiliary fuel tank for tractorimplement combination
US2852870A (en) * 1955-05-04 1958-09-23 Caterpillar Tractor Co Two speed scraper apron
US3014291A (en) * 1960-05-11 1961-12-26 Int Harvester Co Hydraulic bowl lifting arrangement for earth working scrapers
US3015173A (en) * 1960-08-29 1962-01-02 Caterpillar Tractor Co Shipping accessory for tractor drawn scrapers
US3179440A (en) * 1962-07-06 1965-04-20 Robert Hudson Ltd Composite articulated vehicles
US3262513A (en) * 1962-10-02 1966-07-26 Henriksson Sune Torsten Combined power vehicle and trailer structure
US3175846A (en) * 1963-05-28 1965-03-30 Robert L Arbaugh Trailer hitch
US3529676A (en) * 1967-10-20 1970-09-22 Allis Chalmers Mfg Co Spring loaded coulter
US3553860A (en) * 1970-02-02 1971-01-12 Caterpillar Tractor Co Gimbal and universal coupling lift cylinder mounting for scrapers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893250A (en) * 1974-01-31 1975-07-08 Caterpillar Tractor Co Transport bracket for tractor scrapers and method for using the same
US4001956A (en) * 1975-09-17 1977-01-11 Caterpillar Tractor Co. Tractor scraper transportation and assembly therefor
US4142309A (en) * 1978-02-17 1979-03-06 Caterpillar Tractor Co. Scraper bowl-lift apparatus
US4328630A (en) * 1980-11-13 1982-05-11 General Motors Corporation Pullyoke assembly for a scraper

Also Published As

Publication number Publication date
FR2078387A5 (enExample) 1971-11-05
GB1329071A (en) 1973-09-05

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515