US3712490A - Mechanical shovel attachment - Google Patents

Mechanical shovel attachment Download PDF

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Publication number
US3712490A
US3712490A US00126690A US3712490DA US3712490A US 3712490 A US3712490 A US 3712490A US 00126690 A US00126690 A US 00126690A US 3712490D A US3712490D A US 3712490DA US 3712490 A US3712490 A US 3712490A
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United States
Prior art keywords
lever
attachment
column
locking
arm
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
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US00126690A
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English (en)
Inventor
H Schaeff
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Individual
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Individual
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Publication of US3712490A publication Critical patent/US3712490A/en
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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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/968—Storing, handling or otherwise manipulating tools when detached from the machine

Definitions

  • INVEN TOR HANS SCHAEFF ATTORNEY wmm 22 ms 2,712,490
  • HANS SCHAEFF ATTORNEY 1 MECHANICAL SI-IOVEL ATTACHMENT BACKGROUND OF THE INVENTION axis A shovel arm extends from the vertical column retracted, and the arm is pivoted upwardly into a retracted position as steep as possible in order to reduce the rear axle load on the vehicle. To a certain extent, this rear axle load remains, nevertheless, present withall carrier vehicles carrying mechanical shovel attachments. This is the reason why shovel attachments of a certain size can only be carried by correspondingly heavy vehicles,'.or vehicles whose weight distribution has been correspondingly modified. v
  • the lever forms a supporting base for the shovel arm and its hydraulic cylinder, the base being pivotable upwardly fromits normal working position and lockable in its new position from which the shovel armcan execute a further upwardly or backwardly directed pivoting motion so as to allow the shovel attachment to be moved as close as possible to the carrier vehicle.
  • the position is preferably parallel to the longitudinal center axis of the carrier vehicle located between the operators stand and one of the wheels. The device thus permits a considerable reduction in the rear axle load of the carrier vehicle during travelling, while simultaneously improving its maneuverability.
  • the mechanical shovel attachment of the invention whose unhooked from the carrier vehicle,
  • the lever comprises two parallel spaced plates of identical contour which are mounted and positioned on the upper end of the vertical pivoting column by means of a central mounting ear forming the horizontal pivot.
  • Oppositely arranged bushings in the plates for the reception of the support pin of the shovel ar'm cylinder are also provided.
  • the locking of the lever relative to the vertical pivoting column is achieved by means of a locking car at the lower end of the pivoting column which corresponds to appropriate bores in the lower end of the plates of the lever in its working position for the introduction of a locking pin.
  • the lever In'it-s raised position, the lever is locked by means of an additional locking link attached on one end'to the lockingear of the vertical column and on its other end to the plates of the arm.
  • thescoopstrut and working tool are rested on the ground.
  • the locking pin is removed and, depending upon the particular structure" of the attachment, either the scoop strut cylinder and/or the arm cylinder is operated.
  • the lever is thereby raised from its downwardly extending position, after which the additional locking link can be installed between the lever 'andthe locking ear on the vertical pivoting axes. No special locking link is required in this case.
  • FIG.'3 is an enlarged partial side view elevation of a further modification of the invention including an operating cylinder attached to the lever;
  • FIG. 4 shows the embodiment of FIG. 3 in a front view elevation, as seen when looking toward the vehicle;
  • FIG. 5 shows, in a somewhat simplified plan view, the rear end of a carrier vehicle carrying the mechanical shovel attachment of the invention, the attachment being shown in its laterally offset, retracted travelling position.
  • the mechanical shovel attachment consists of a frame which is adapted for connection to a suitable carrier vehicle and having a pair of lateral support struts 23.
  • a support bracket is attached to the frame 10 for lateral pivotability relative thereto, and a vertical pivoting column 35 is attached to the exterior edge of the support bracket 20.
  • the upper end of the pivoting column 35 includes a pivot ear having a pivot pin 37 mounted therein for pivotable support of a shovel arm 36 on the pivoting column.
  • pivotably supported on the pivot pin 37 is the upper end of a lever 38, the lower end of the lever having a locking bore 38a matching a corresponding locking bore on a locking ear 39 located on the lower end of the vertical pivoting column 35 and lockable thereto by a pin (not shown).
  • One end of an operating cylinder 41 for the shovel arm 36 is attached to the lever 38 at the point 40 located between the two ends ofthe lever.
  • the working mechanism may be pivoted upwardly and backwardly until it comes to rest on a support lock 44 attached to the frame 10. This is accomplished by resting shovel scoop 42 on the ground, whereupon the pin locking the lever 38 at the locking ear 39 is removed. "The operating cylinder 41 is then retracted. This causes the lever 38 to pivot upwardly into a position shown by broken lines in FIG. 1. A special locking link 43 can now be inserted between the locking ear 39 of the column 35 and the free end 38a of the raised lever. If the cylinder 41 is now extended, the shovel arm 36 is permitted to be raised until it comes to rest on the support 44.
  • the frame 10 also includes an operators seat 51 and a control panel 52 which are essentially arranged in the middle of the structure so that, when the support bracket 20 is pivoted to one side, the shovel arm 36 can be positioned along side the operator's seat and above the carrier vehicle. This is similar to the position shown in FIG. 5, where a laterally movable vertical pivoting column is attached to the frame.
  • FIG. 2 includes a frame 10 car- I rying on a slide a transversely movable carriage 61.
  • the vertical pivoting column 35 is attached to the outer portion of the carriage 61.
  • the lever 38 is again pivotably attached to theupper end of the pivoting shovel arm at point 40.
  • Near the lower end of the lever 38 is further provided a locking bore 38a which can be aligned with a matching, locking car 39 on the lower end of the pivoting column 35 for the insertion of a locking pin.
  • the scoop strut 45 and scoop 42 are first rested on the ground as described in the previous example.
  • the hydraulic cylinders 41 for the shovel arm end 46 for the scoop strut are activated, preferably in a parallel operation by extending cylinder 41 and cylinder 46 at the same'time until the lever 38 reaches its raised position indicated by dotted lines in FIG. 2.
  • the scoop 42, the scoop strut 45, and the shovel arm 36 have to pivot clockwise around the support of the scoop on the ground, whereby the angle enclosed between the lever 38 and the arm 36 is increased; while the angle enclosed between the arm 36 and the scoop strut 45 is decreased.
  • the shovel arm cylinder 41 can be retracted, thereby raising the entire shovel mechanism until it reaches the retracted end position shown in FIG. 2.
  • FIGS. 3 and 4 shows a lever 38 which, as in the previous examples, is pivoted on its upper end by means of a horizontal pivoting pin 48 mounted in a pivoting car 37 of the vertical pivoting column 35.
  • the shovel arm 36 includes a forked end portion 360 which reaches over the two plates constituting the lever 38, thereby retaining the latter on the horizontal pivoting pin 48 at a fixed distance to one another.
  • a hydraulic cylinder 55 is attached by its lower end to the bottom portion of the pivoting column 35 by means of mounting cars 39 and a horizontal pin 54 on the pivoting column.
  • the working end of the cylinder 55 is attached to the plates of the lever 38 by means of welded eyes 56 and a cross pin 57.
  • To the lower end of the lever 38 is pivotably attached one end of the shovel arm cylinder 41 by means of a pin 58.
  • a cylinder 59 provides the pivoting drive for the vertical pivoting column 35.
  • the lever 38 can be raised to its travelling position indicated by broken lines by actuating the cylinder 55. If the cylinder 41 has been extended before the lever 38 is raised, the resultant position of the shovel mechanism becomes the fully retracted position as shown in FIG. 3.
  • FIG.5 is illustrated the rear portion of a carrier vehicle to which has been attached the frame 10 of a mechanical shovel attachment.
  • the frame 10 carries an operator's seat 51 and a control panel 52.
  • Below the seat is a horizontal slide 60 and a carriage 61 with the vertical pivoting column 35 attached thereto, as previously described in connection with FIG. 2.
  • the carriage 61 is shown laterally displaced out of its median position.
  • the lever 38 in this case is in its raised travelling position as indicated in FIG. 2 so that the shovel arm 36 attached to the lower end of the lever 38 at 47 extends backwardly over the attachment frame 10 and over the carrier vehicle.
  • An attachment for mechanical shovels and the like comprising:
  • a lever being pivotally connected to said column about a horizontal axis at one joint
  • an operating cylinder member having a movable piston member therein, 'one of said members being pivotally connected to said lever and the other member being pivotally connected to said arm, whereby operation of said operating cylinder and piston members causes said lever to'rotate about its horizontal axis.
  • An attachment as defined in claim 1 including means for locking said lever in a given position.
  • An attachment as defined in claim 1 wherein said lever includes a pair of parallel plates maintained a given distance from one another by pivot ear means on the upper end of said column, and means on said plates for supporting one of said members.
  • An attachment as defined in claim 1 including a

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)
  • Shovels (AREA)
US00126690A 1970-03-23 1971-03-22 Mechanical shovel attachment Expired - Lifetime US3712490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702013849 DE2013849A1 (de) 1970-03-23 1970-03-23 Anbaubagger

Publications (1)

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US3712490A true US3712490A (en) 1973-01-23

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Application Number Title Priority Date Filing Date
US00126690A Expired - Lifetime US3712490A (en) 1970-03-23 1971-03-22 Mechanical shovel attachment

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US (1) US3712490A (enrdf_load_stackoverflow)
DE (1) DE2013849A1 (enrdf_load_stackoverflow)
FR (1) FR2084686A5 (enrdf_load_stackoverflow)
GB (1) GB1303224A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987914A (en) * 1975-11-04 1976-10-26 Deere & Company Two-piece backhoe boom
US4373856A (en) * 1976-06-11 1983-02-15 Taylor Glenn E Tie butt handler
US4378193A (en) * 1977-12-24 1983-03-29 Hans Schaeff Mobile shovel excavator
EP0168946A1 (en) * 1984-06-12 1986-01-22 Ridley Stokoe Excavator/loader

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1030109A (en) * 1975-05-12 1978-04-25 Elton B. Long Overcenter backhoe
US4272222A (en) * 1979-01-11 1981-06-09 The General, Inc. Boom apparatus
EP0210319A1 (fr) * 1985-07-31 1987-02-04 SOCIETE SAVOYARDE DE CONSTRUCTION DE MATERIEL INDUSTRIEL SACMI Société Anonyme Machine de travail à flèche articulée, mobile en site et en azimut sur 360 degré et adaptable à l'arrière d'un véhicule
FR2559810B1 (fr) * 1984-02-21 1990-10-05 Sacmi Machine de travail a fleche articulee, mobile en site et en azimut sur 360o et adaptable a l'arriere d'un vehicule
GB2273486A (en) * 1992-12-16 1994-06-22 Andrew John Sewell Construction and excavation machinery

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995261A (en) * 1957-10-23 1961-08-08 Soyland Ingebret Mobile excavators
US3169650A (en) * 1963-12-23 1965-02-16 Soyland Ingebret Transport arrangement for mobile excavator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2995261A (en) * 1957-10-23 1961-08-08 Soyland Ingebret Mobile excavators
US3169650A (en) * 1963-12-23 1965-02-16 Soyland Ingebret Transport arrangement for mobile excavator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987914A (en) * 1975-11-04 1976-10-26 Deere & Company Two-piece backhoe boom
US4373856A (en) * 1976-06-11 1983-02-15 Taylor Glenn E Tie butt handler
US4378193A (en) * 1977-12-24 1983-03-29 Hans Schaeff Mobile shovel excavator
EP0168946A1 (en) * 1984-06-12 1986-01-22 Ridley Stokoe Excavator/loader

Also Published As

Publication number Publication date
DE2013849A1 (de) 1971-10-21
GB1303224A (enrdf_load_stackoverflow) 1973-01-17
FR2084686A5 (enrdf_load_stackoverflow) 1971-12-17

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