US3772804A - Leveling device for the adjustment of earth working implements - Google Patents

Leveling device for the adjustment of earth working implements Download PDF

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Publication number
US3772804A
US3772804A US00153225A US3772804DA US3772804A US 3772804 A US3772804 A US 3772804A US 00153225 A US00153225 A US 00153225A US 3772804D A US3772804D A US 3772804DA US 3772804 A US3772804 A US 3772804A
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US
United States
Prior art keywords
tool
float
motor
fluid
valve
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
US00153225A
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English (en)
Inventor
J Bomeke
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.)
CNH Industrial Baumaschinen GmbH
Original Assignee
O&K Orenstein and Koppel GmbH
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
Priority claimed from DE19702029882 external-priority patent/DE2029882C/de
Application filed by O&K Orenstein and Koppel GmbH filed Critical O&K Orenstein and Koppel GmbH
Application granted granted Critical
Publication of US3772804A publication Critical patent/US3772804A/en
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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S37/00—Excavating
    • Y10S37/907—Automatic leveling excavators

Definitions

  • the present invention relates to a leveling device for the adjustment of working tools, especially earth moving machines such as ditch digging machines, in which the working implements, or the like, are pivotable about a horizontal axis arranged in the working direction.
  • Leveling or planing devices are known in which the working tool can be pivoted about a horizontal axis so that the planing or leveling shovel, even if the device is standing at an incline with regard to the surface to be planed can be adjusted positively for horizontal operation. According to one heretofore known device, this is effected by an actuation by means of a hydraulic cylinder controlled at the discretion of an operator.
  • the leveling tool Every time when the vehicle employed for the leveling operation is not arranged along a horizontal plane, for instance when it sinks partially into the ground, the leveling tool has to be readjusted. This is awkward and unsafe, inasmuch as during the operation, as a rule, not suflicient time remains to carry out the control of the level sufficiently frequently. If, however, a leveling measuring operation is effected, it requires time and precision.
  • a profile ditch digging shovel adjusts itself to an already leveled starting profile when a search guard is released
  • an object of the present invention to provide a device by means of which independently of the operator, also during the working operation a continuous adaptation of the proper level position of the shovel to the respective position of the supporting vehicle will be effected.
  • FIG. l is a diagrammatic illustration of a profile shovel equipped with the leveling device according to the invention.
  • FIG. 2 is a diagrammatic illustration of the hydraulic circuit for the leveling device and for the supporting vehicle.
  • the leveling device is characterized primarily in that the profile shovel is provided with a float box having two floats which are interconnected by a centrally journaled lever, the position of which deviates from the horizontal plane and is, by means of a further lever, conveyed to a control valve which, through a conduit, is connected to a pressure oil pump and through further conduits is connected to the cylinder chambers located on both sides of the piston, which cylinder chambers pertain to the cylinders for the adjustment of the profile shovel to the horizontal, the cylinder chambers on the sides of the pistons and the cylinder chambers on the side of the rods of said cylinder chambers are crosswise interconnected by conduits.
  • the dipper arm 1 of a non-illustrated earth dredge has, as shown in F116. 1, linked thereto a profile shovel 2 through the intervention of a girder or traverse 3.
  • the traverse 3 and thus the profile shovel 2 are pivotable relative to the dipper arm ll through the intervention of a joint 4 arranged transverse to the vehicle.
  • a pivoting is effected transverse to the direction of the ditch about the joint 5 located in the longitudinal direction of the supporting vehicle.
  • the pivoting of the profile shovel 2 is carried out by means of cylinders 6. These cylinders receive oil under pressure through the control valve 7 which is displaced from its neutral position as soon as the profile shovel 2 and the float box 8 connected thereto are displaced from their horizontal positions.
  • the floats 9 are adjusted and actuate the control valve 7 through lever 10 interconnecting said floats 9 (lever 10 being rotatable at Ill) and adjusts the control valve 7 through the lever 12 vertically connected to lever 10.
  • the cylinders 6 are, through conduits 113 and 14, crosswise interconnected in such a way that the cylinder chamber 6a, located on the side of the bars or rods and pertaining to one cylinder is connected to the cylinder chamber 6b at the piston side of the other cylinder so that synchronism will be assured.
  • the conduits l5 and 16 the cylinders 6 are connected to the control valve 7.
  • a pump 17 of the hydraulic circuit of the supporting vehicle communicates through conduit 18 with the control valve 7.
  • the hydraulic circuit of the supporting vehicle is indicated by thin lines, and comprises a working cylinder and a control valve for actuating said working cylinder.
  • the leveling device operates as follows. As soon as the profile shovel 2, in view of an inclined position of the dredge due to unevenness of the ground leaves its horizontal position, the control valve 7 with the above referred to means moves from the neutral position shown in FIG. 2 to the position I or II whereby oil under pressure passes from pump 17 into cylinders 6 so that the latter will adjust the profile shovel. This operation is effected until the profile shovel has reached again its horizontal position and consequently the control slide is again in its neutral position.
  • the present invention is, by no means, limited to the particular showing in the drawings, but also comprises any modifications within the scope of the appended claims.
  • a synchronous cylinder or a differential cylinder which may be actuated by means of heretofore known controls
  • the float box instead of arranging the float box fixedly to the profile shovel, the float box may also be journaled about a turning point (designated in FIG. 1 with the numeral 20) on the profile shovel so that also inclined surfaces can be leveled.
  • the float box may again be fixed to the shovel after an effected angular turning movement.
  • a ground working machine having a ground working tool thereon, said machine having a support beam and said tool being pivotally supported on said beam for tilting about an axis extending in the fore and aft direction of the machine, fluid motor means connected between said tool and said beam to tilt said too] about said axis, a source of fluid under pressure, valve means connecting said source with said motor means operable for reversibly supplying fluid to said motor means and for entrapping fluid in said motor means, and control means operatively connected to said valve in controlling relation thereto and the improvement therewith comprising in combination level sensing means mounted on said tool itself and responsive to a change in the lateral inclination of said tool itself from a predetermined position to actuate said valve means to supply fluid to said motor means to return said tool itself to said predetermined position, said level sensing means mounted on said tool itself comprising a float box on said tool and a body of liquid therein, float means floating on said liquid, said valve means being mounted on said tool, and linkage means connecting said

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Operation Control Of Excavators (AREA)
US00153225A 1970-06-18 1971-06-15 Leveling device for the adjustment of earth working implements Expired - Lifetime US3772804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702029882 DE2029882C (de) 1970-06-18 Betätigungsvorrichtung für eine Baggerschaufel, insbesondere Grabenprofilschaufel

Publications (1)

Publication Number Publication Date
US3772804A true US3772804A (en) 1973-11-20

Family

ID=5774214

Family Applications (1)

Application Number Title Priority Date Filing Date
US00153225A Expired - Lifetime US3772804A (en) 1970-06-18 1971-06-15 Leveling device for the adjustment of earth working implements

Country Status (6)

Country Link
US (1) US3772804A (enExample)
BE (1) BE761622A (enExample)
BR (1) BR7102490D0 (enExample)
DK (1) DK126698B (enExample)
FR (1) FR2095472A5 (enExample)
NL (1) NL7100413A (enExample)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109047A1 (de) * 1980-03-10 1982-02-04 Wain-Roy, Inc., 01452 Hubbardston, Mass. "exkavator-loeffel"
US4650017A (en) * 1985-02-18 1987-03-17 Industries Tanguay, Inc. Crawler-mounted machine for travel over natural terrain
US4802293A (en) * 1987-11-20 1989-02-07 Smith Raymond H Adjustable earth-moving attachment for a vehicle
US5694710A (en) * 1994-05-11 1997-12-09 Mieger; Rolf Hydraulically swung trenching shovel
US20130145657A1 (en) * 2009-07-23 2013-06-13 The Charles Machine Works, Inc. Trenching System
CN105064434A (zh) * 2015-07-26 2015-11-18 葛伟岸 一种后置式开沟机深度调节装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520266A (en) * 1945-06-23 1950-08-29 Christopher N Adams Hydraulic leveling and controlling device
US2551314A (en) * 1946-09-27 1951-05-01 Lawrence C Burton Tractor with leveling device
US2583250A (en) * 1948-07-27 1952-01-22 Milfred V Ball Leveling device
US2684254A (en) * 1950-09-07 1954-07-20 Harold W Goss Sway stabilizer for vehicles
US2872200A (en) * 1955-08-16 1959-02-03 Deere & Co Leveling control for hillside machines
US3231116A (en) * 1963-10-23 1966-01-25 Olin B Powell Excavating machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2520266A (en) * 1945-06-23 1950-08-29 Christopher N Adams Hydraulic leveling and controlling device
US2551314A (en) * 1946-09-27 1951-05-01 Lawrence C Burton Tractor with leveling device
US2583250A (en) * 1948-07-27 1952-01-22 Milfred V Ball Leveling device
US2684254A (en) * 1950-09-07 1954-07-20 Harold W Goss Sway stabilizer for vehicles
US2872200A (en) * 1955-08-16 1959-02-03 Deere & Co Leveling control for hillside machines
US3231116A (en) * 1963-10-23 1966-01-25 Olin B Powell Excavating machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109047A1 (de) * 1980-03-10 1982-02-04 Wain-Roy, Inc., 01452 Hubbardston, Mass. "exkavator-loeffel"
US4650017A (en) * 1985-02-18 1987-03-17 Industries Tanguay, Inc. Crawler-mounted machine for travel over natural terrain
US4802293A (en) * 1987-11-20 1989-02-07 Smith Raymond H Adjustable earth-moving attachment for a vehicle
US5694710A (en) * 1994-05-11 1997-12-09 Mieger; Rolf Hydraulically swung trenching shovel
US20130145657A1 (en) * 2009-07-23 2013-06-13 The Charles Machine Works, Inc. Trenching System
US8806784B2 (en) * 2009-07-23 2014-08-19 The Charles Machine Works, Inc. Trenching system
CN105064434A (zh) * 2015-07-26 2015-11-18 葛伟岸 一种后置式开沟机深度调节装置

Also Published As

Publication number Publication date
FR2095472A5 (enExample) 1972-02-11
DE2029882A1 (de) 1972-01-05
BE761622A (fr) 1971-06-16
BR7102490D0 (pt) 1973-06-05
DK126698B (da) 1973-08-13
NL7100413A (enExample) 1971-12-21

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