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
  • E02F3/34—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 with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
  • E02F3/345—Buckets emptying side-ways

Definitions

• This invention relates generally to dump buckets for front end loaders and more particularly to an improved, simplified assembly permitting lateral movement of the bucket to either side of the loader as well as conventional longitudinal movement for pick up of material and dumping.
• the basic components of the instant invention include: a base or cradle which is mounted on the ends of the conventional, four point parallelogram linkage of a front end loader; a dump bucket; and an intermediate structure between the dump bucket and cradle which accomplishes lateral or sideways movement of the bucket through a maximum arc of about 80 degrees to either side of the cradle, which remains fixed in a plane laterally of the loader.
• the cradle, intermediate structure and bucket are further positioned to be locked together for conventional, longitudinal movement of the bucket by means of the loader's conventional four point parallelogram linkage.
• the intermediate structure is arranged to be simultaneously unlatched and activated from a single hydraulic control. Hydraulic fluid under pressure is provided from the usual hydraulics on the front end loader.
• OMPl ' have required delatching of one dump bucket end or the other from its main support or cradle without provision of sufficien stabilizing structure in the assembly to impart sufficient strength to the overall dump bucket in a side dump attitude.
• the prior art devices utilize but a single hydrau cylinder at a time in shifting the dump bucket to one side or the other thus further weakening the overall system.
• U.S. Patent No. 3,022,91 discloses a two way side dump bucket, which I co-invented,incl ing a cradle mounted on the conventional, four point linkage o a front end loader, a dump bucket, and intermediate structure for shifting or rotating the bucket outwardly to either side for dumping.
• multiple pivots and an interconnecting strap assembly are required to impart sufficient strenght to the assembly and no release or reengagement of the hydraulic jacks are provided when the loader bucket is in its convention lateral disposition.
• only one of the two hydraulic jacks is used at a time for shifting the bucket to a side dump attitude.
• U.S. Patent No. 3,144,147 Another hydraulic lock only, multiple frame member and pivot assembly for a side dump bucket is shown in U.S. Patent No. 3,144,147.
• U.S. Patent No. 3,198,358 discloses a mechanical latch arrangement in conjunction with a hydraulic jack assembly but only one of the two jacks is used at a time. Also, the multiple braces and pivots required are simply too weak to permit the device to withstand the rigors of heavy construction work.
• U.S. Patent No. 3,207,342 illustrates a side dump bucke movable to one side only.
• Other disclosures of a single hydraulic jack for shifting the bucket selectively to either side but again requiring positive disengagement of one end of the dump bucket from its main support include U.S. Patent No's. 3,268,101 (first embodiment - Figs. 1-4); 3,312,364; 3,203,565 (reissued as RE 26,268); 3,400,845; 3,402,841; 3,419,171; 3,523,622; 3,531,007; and 3,532,241.
• a practical two way side dump bucket structure for a front end loader will reduce construction work costs consider ⁇ ably as the need for turning and shifting the loader is elimi ⁇ nated.
• a dump truck may be positioned parallel the loader. After a load is picked up by the front end loader, all that is needed is to lift and rotate the dump bucket sideways, then release the load into the wait ⁇ ing vehicle.
• Still another object of the invention is to provide a two way side dump bucket assembly including a centrally mounte two part stabilizing component for the bucket, a pair of hydraulic jacks to either side of the stabilizing component an a sliding control member beneath the stabilizing component which mechanically defines a swing left, swing right or neutra bucket locked position, the control member being positioned by simultaneous actuation of both hydraulic jacks.
• Still a further object of the invention is to provide a two way side dump bucket assembly with secure bracket assemblies on each end of the bucket for imparting sufficient strength to the overall structure even when the bucket is in a side dump attitude.
• Yet another object of the invention is to provide a two way side dump bucket assembly which may be readily attached to a conventional front end loader or be made an integral part thereof which will greatly reduce cost per cubic yard of material moved.
• Yet a further object of the invention is to provide a two way side dump bucket assembly which is of uncomplicated construction and whose components are protected from fouling by dirt and debris when in use.
• Fig. 1 is a side elevation view of the two way side dump bucket mounted on the four point, parralelogram lift linkage of a conventional front end loader;
• Fig. 2 is a top, generally schematic view of the dump bucket (or rear view in the sense of Fig. 1) , illustrating rotation of the bucket to either side through an arc of about sixty degrees, in phantom lines;
• Fig. 3 is a section view taken along lines 3-3 of Fig. 1;
• Fig. 4 is another section view taken along lines 4-4 of Fig. 3;
• Fig. 5 is a further section view taken along lines 5-5 of Fig. 3;
• Fig. 6 is a partial rear view, taken from the right hand side of Fig. 5 partly in plan and partly in section showing relationship of parts as a "dump right" attitude movement is initiated;
• Fig. 7 is an exploded, perspective view illustrating the components of the dump bucket and supporting structure.
• Fig. 8 is a schematic diagram of the hydraulics and control valve of the invention. DESCRIPTION OF THE PREFERRED EMBODIMENT
• a conventional fr end loader 10 is illustrated, having equally conventional, fo point parallelogram lift linkage means 12 at the front end thereof.
• a two way sid dump bucket assembly is attached to linkage means 12.
• the dump bucket assembly includes three major componen these being cradle 14, dump bucket 16 and intermediate latera control movement structure means 18 interconnecting cradle 14 and bucket 16.
• Cradle 14 includes a pair of generally U-shaped suppor and linkage attachment brackets 20, 20 which are connected to linkage 12 as shown in Fig. 1.
• cradle 14 also includes top and bottom guard plates 22, 22 (Fig. 7) which serve to protect the components of the intermediate structure 18 from fouling by dirt and debris found at all construction sites.
• dump bucket 16 has a rear wall 24, a top plate 26, and angled scoop or bottom plate 28 and side chutes 30, 30, each angled outwardly from rear wall 24 at about 35°.
• Chutes 30, 30 are so angled to retain loose materials and for obtaining maximum reach to either side of the loader during pickup of material.
• Bottom plate 28 is angled as shown so that when dump bucket 16 is in a maximum, downwardly rotated dump position, bottom plate 28 will be disposed at an angle of about 80° with respect to a horizontal plane to thereby assure complete discharge of all materials.
• the intermediate lateral movement control structure means 18 includes an extended lengt control member housing 32, which is securely fixed to cradle 14, a control member 34 slidable within housing 32 between fixed limits of movement as will be described below, a multi-
• telescoping stabilizing assembly including basemembers 36, 36 and extensions 38, 38 and a pair of dual action, piston, cylinder fluid motor or hydraulic jacks 40, 42, arranged generally parallel to and to either side of housing 32.
• Each base member 36 has an intermediate bracket 44 at its outer end, pinned at 46 for pivotal mounting within bracket 48 at an end of the. rear wall 24 of bucket 16.
• Extensions 38 are slidable within their respective bases 36 and are pivotally attached at their meeting ends 50, 52 by a pin 54 through upstanding ears 56, 56 centrally located on housing 32.
• Each bucket bracket 48 also includes a bracket extension 58, 60 for mounting piston rod 62 of jack 40 and piston rod 64 of jack 42, respectively.
• Control member 34 has opposed, laterally extended hydraulic jack mounting pins 66, 68, extended through slots formed in housing 32, one of which is shown at 70, for pivotal mounting of the base of cylinder 72 of jack 42 and the base of cylinder 74 of jack 40, respectively.
• Sliding control member 34 also has a pair of end control extensions 76 and 78 which are selectively inserted through end bores 80 and 82, respectively, of housing 32 for further engage ⁇ ment with matingly through bored lock tabs 84 and 86, respectively, formed as a part of brackets 44 of the telescoping stabilizing assembly.
• control member 34 is slidable within fixed limits of travel and these are further controlled/ as will be explained below, by a pair of spring loaded stop pins 88, 90, selectively engaging housing stop bores 92 and 94 respec ⁇ tively.
• Pins 88, 90 may be gas loaded or otherwise suitably automatically actuated to serve their intended function as will be described in further detail below) .
• a direction indication pointer 96 may be provided on
• OMPI control member 34 extends through a slot 98 in housing 32 and a mating slot 100 in plate 22 of cradle 14 to externally, visually indicate a neutral, locked condition of "load” or a "dump L” or “dump R” attitude as illustrated in Fig. 2.
• the basic machine hydraulics of a conventional front " end loader include a fluid under pressure line A and a return line B. These are directed through a simple reversing control valve 102 to line 104 and the piston head end 106 of jack 40 and behind piston head end 108 of jack 42, and to line 110 and the piston head end 112 of jack 42 and behind the piston head end 114 of jack 40.
• control valve 102 When the operator activates valve 102 to a "dump right" attitude, fluid under pressure is introduced through line 104 to oppositely arranged jacks 40 and 42, simultaneously causing jack 40 to extend and jack 42 to contract. (Ordinarily, such a valve 102 is provided as an optional control with the front end loader. Such a valve is easily installed if the loader is not so equipped) . Thus control member 34 is caused to slide to the right (with referen to Fig.
• the conventional controls for linkage 12 (not shown) are then actuated to dump a load of material from bucket 16.
• control valve 102 is actuated to reverse flow to jacks 40, 42 so that now jack 40 retracts and jack 42 extends. This will cause bucket 16 to return to its initial position within cradle 16. During this movement, stop pin 88 locks control member 34 in the disposition shown in Fig. 6 so it will not move during bucket return.
• Each half of the stabilizing assembly may be made of multiple sections, if needed for stability in a broad reach attitude. Additionally, multiple jacks 40, 42, and/or multiple housings andcontrol members 32 and 34, respectively, may be employed, particularly in large, heavy assemblies.

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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)
• Shovels (AREA)
• Earth Drilling (AREA)
• Forklifts And Lifting Vehicles (AREA)
• Operation Control Of Excavators (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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ID=21724776

Family Applications (1)

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Cited By (1)

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Citations (2)

• 1979
  • 1979-01-29 US US06/007,199 patent/US4220438A/en not_active Expired - Lifetime
• 1980
  • 1980-01-11 CA CA343,485A patent/CA1123387A/en not_active Expired
  • 1980-01-23 JP JP55500479A patent/JPS6133097B2/ja not_active Expired
  • 1980-01-23 WO PCT/US1980/000061 patent/WO1980001583A1/en active IP Right Grant
  • 1980-01-23 GB GB8026377A patent/GB2058008B/en not_active Expired
  • 1980-01-29 MX MX181007A patent/MX149415A/es unknown
  • 1980-08-12 EP EP80900355A patent/EP0022853B1/en not_active Expired

Patent Citations (2)

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