US3526329A - Bucket attachment for wheel loaders - Google Patents

Bucket attachment for wheel loaders Download PDF

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Publication number
US3526329A
US3526329A US670676A US3526329DA US3526329A US 3526329 A US3526329 A US 3526329A US 670676 A US670676 A US 670676A US 3526329D A US3526329D A US 3526329DA US 3526329 A US3526329 A US 3526329A
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US
United States
Prior art keywords
bucket
vehicle
attachment
loader
wheel loaders
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
US670676A
Other languages
English (en)
Inventor
Norman L Anderson
Howard B Austin
Dorrance Oldenburg
Jacob E Staab
Robert N Stedman
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 US3526329A publication Critical patent/US3526329A/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
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0841—Articulated frame, i.e. having at least one pivot point between two travelling gear units
    • 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
    • E02F3/3405—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 and comprising an additional linkage mechanism
    • E02F3/3408—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 and comprising an additional linkage mechanism of the parallelogram-type
    • 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
    • E02F3/3405—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 and comprising an additional linkage mechanism
    • E02F3/3411—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 and comprising an additional linkage mechanism of the Z-type
    • 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
    • E02F3/961—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements with several digging elements or tools mounted on one machine
    • 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
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears

Definitions

  • a bucket loader attachment for rearward mounting on a standard wheel loader vehicle of a type which is normally free to oscillate on its rear axle and which has a standard forward bucket.
  • a frame pivotally supporting a bucket on lift arms is connected to the rearward framework of the vehicle. Hydraulic jacks are interposed be tween the frame and the lift arms and between the frame and the bucket to respectively control elevation and tilting of the bucket.
  • Stabilizing means are provided which are operable to prevent undesirable oscillation of the vehicle caused by the rear bucket loader.
  • Wheel loaders of a type having a forwardly mounted bucket are limited in load carrying capacity due to the feasible size of the single bucket and more importantly their maximum capacity is limited by the weight which the vehicle can support in the single bucket without causing instability or tipping of the machine.
  • Such capacity limitations have been particularly noted in quarry operations where such loaders are used to feed crushers which are set up at an established site. As the rock loading site becomes remote from the crusher, the limited capacity of the loaders necessitates the use of trucks to carry the rough rock from the loader to the crusher. Use of the additional equipment is undesirable since it substantially reduces the efiiciency of the quarry operation.
  • the present invention overcomes the above problem by providing an implement attachment which may be mounted on the wheel loader at its opposite end from the standard bucket assembly.
  • the attachment is of mechanically simple construction and is suitable for unitized mounting upon a standard wheel loader, thus reducing the capital expenditure necessary to practice the invention.
  • the use of a bucket assembly on either end of a standard wheel loader permits an increased capacity in each bucket since they balance each other thus adding to the stability of the vehicle.
  • Such standard wheel loaders often include means permitting the vehicle to oscillate upon its rear axle. With a bucket attachment connected to the rear of the vehicle, this oscillating freedom is undesirable since it allows sidewise tipping of the machine when the rear bucket is loaded and also induces stresses in the wheel loader vehicle.
  • the present invention also contemplates stabilizing means for association with the oscillating means of the vehicle with the stabilizing means being operable to prevent oscillation of the vehicle upon is rear axle at least when the rear bucket attachment is being employed.
  • FIG. 1 is a side elevation of a standard wheel loader with the present bucket loader attachment rearwardly disposed thereon;
  • FIG. 2 is an illustration of the rearmost portion of the wheel loader vehicle and of the bucket loader attachment
  • FIG. 3 is a partial plan view, with parts in section, of the wheel loader vehicle illustrating the means for permitting oscillation of the vehicle upon its rearward axle;
  • FIG. 4 is a fragmentary front elevation view which illustrates the oscillating means in greater detail.
  • FIG. 1 A standard wheel loader vehicle of articulated construction and having a forwardly disposed bucket 11 is illustrated in FIG. 1 with a bucket loader attachment, generally indicated at 12, disposed at its rear. As is more clearly shown in FIG. 2, the vehicle has a rearwardly extending portion 13 of its main framework with an engine contained in a compartment 14 supported thereupon.
  • the bucket loader attachment comprises a frame 16 suitable for connection to the rearwardly extending framework of the vehicle with a bucket 17 pivotally supported thereon by means of a pair of lift arms, one of which is indicated at 18.
  • Motor means for controlling the bucket position include a hydraulic jack 19 pivotally connected between the frame and each lift arm for varying elevation of the bucket and a pair of hydraulic jacks, one of which is indicated at 21, pivotally connected between the frame and each side of the bucket for varying the tilt position of the bucket.
  • the bucket attachment frame comprises a bottom plate 22, outer and inner side plates 23 and 24 at each side of the frame extending upwardly therefrom and a formed top plate 25 connected between each pair of outer and inner side plates.
  • the attachment frame surrounds the main framework and engine assembly with the bottom plates and side plates being secured to the main framework by bolt 26.
  • Each lift arm is pivotally secured to the side plates by a pivot pin 27 and to the bucket by another pivot pin 28.
  • Each lift jack 19 is pivotally connected between brackets 29 and 31 located respectively on one of the outer side plates and the lift arms.
  • Each tilt jack 21 is trunnion mounted between one of the inner and outer side plate pairs at 32 with its rod end 33 pivotally connected to the bucket at 34.
  • the bucket 17 is illustrated in a loading position while retraction of both the lift jacks and tilt jacks causes the bucket to assume a carry position indicated at phantom position 17'.
  • the tilt jack is extended to tilt the bucket forwardly from its carry position.
  • the present bucket loader attachment permits rapid and simple conversion of a standard wheel loader to provide a bucket at both ends thereof. While the addition of the bucket loader attachment doubles the load carrying capacity of the standard wheel loaders, it is to be noted that the capacity of each bucket may be still fur ther increased since the two buckets tend to balance each other and increase the stability of the vehicle. It is further to be noted that such wheel loaders are employed commonly with the bucket partially raised from its loading position and tilted forwardly such that its floor 36 is generally vertical to the ground to provide for bulldozing action, for example, during cleanup operation. Thus, it is apparent that the attachment frame 16 may be employed to support other earthworking implements such as a bulldozer blade.
  • Such wheel loader vehicles are commonly supported by a rear axle 37 upon a pair of wheels 38 with the vehicle free to oscillate about a center pivotal connection (not shown) with the rear axle.
  • stabilizing means are employed in the form of a pair of hydraulic cylinders 39', each connected between the vehicle and one end of its rear axle.
  • a conduit 44 connecting the rod ends of the cylinders and a conduit 46 connecting their head ends permit transfer of fluid between the cylinders during oscillation.
  • a "valve represented at 47 is closed to prevent such transfer and thereby stabilize the vehicle while the rear loader is in use.
  • a loader machine adapted for combined loading and transporting, comprising a vehicle having an operators station a pair of like purpose buckets of substantially similar load carrying capacity, each said bucket being pivotally mounted on an opposite end of the vehicle for translatory movement confined to a vertical path, and
  • the balanced positioning of .the two buckets enables the vehicle to accept increased loads and to operate with substantially increased efliciency over extended transport distances, the buckets being arranged in outwardly facing relation from the vehicle and including cutting edges whereby one bucket may be loaded during forward operation of the vehicle and the other bucket may be loaded during reverse operation of the vehicle.
  • a transport type bucket loader vehicle having one bucket pivotally supported at one end of the vehicle for translatory movement confined to a vertical path, the one bucket having an opening facing away from the vehicle to permit loading of material into the one bucket,

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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)
  • Operation Control Of Excavators (AREA)
  • Shovels (AREA)
US670676A 1967-09-26 1967-09-26 Bucket attachment for wheel loaders Expired - Lifetime US3526329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67067667A 1967-09-26 1967-09-26

Publications (1)

Publication Number Publication Date
US3526329A true US3526329A (en) 1970-09-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
US670676A Expired - Lifetime US3526329A (en) 1967-09-26 1967-09-26 Bucket attachment for wheel loaders

Country Status (4)

Country Link
US (1) US3526329A (es)
DE (1) DE1781300A1 (es)
FR (1) FR1582398A (es)
GB (1) GB1233786A (es)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3658198A (en) * 1970-01-26 1972-04-25 Caterpillar Tractor Co Loader bucket mounting assembly
US3765553A (en) * 1970-05-08 1973-10-16 H Schaeff Vehicle with two earthworking attachments
US3814272A (en) * 1971-06-14 1974-06-04 R Spratt Balanced fork lift truck
US4145073A (en) * 1977-04-07 1979-03-20 Caterpillar Tractor Co. Lockup system for a vehicle suspension mechanism
EP0075482A2 (en) * 1981-09-22 1983-03-30 Royal Tractor Company, Inc. Articulated earth-working vehicle
US7581341B1 (en) * 2008-05-23 2009-09-01 Reeves Jr James B Wheel loader
USD832552S1 (en) 2017-10-12 2018-10-30 Clark Equipment Company Lift arm for loader
USD832551S1 (en) 2017-10-12 2018-10-30 Clark Equipment Company Loader
US10626576B2 (en) 2016-12-16 2020-04-21 Clark Equipment Company Loader with telescopic lift arm

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190119A (en) * 1986-05-03 1987-11-11 Gordon Kitching Improvements in or relating to mobile gathering machines

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663266A (en) * 1946-12-20 1953-12-22 Joy Mfg Co Rocking axle structure for mining apparatus
US2718318A (en) * 1952-08-27 1955-09-20 Lester J Schmucker Manure loader
US2874489A (en) * 1957-06-19 1959-02-24 Wayne W Orjala Tool attaching device
US2890805A (en) * 1956-11-27 1959-06-16 John S Pilch Hydraulic system for tractor mounted apparatus
US3047170A (en) * 1960-06-13 1962-07-31 Hy Dynamic Co Earth handling apparatus
US3129832A (en) * 1960-05-18 1964-04-21 Auxiliaire De L Entpr Soc Multiple-purpose power shovel
US3349932A (en) * 1963-08-02 1967-10-31 Wagner Mfg Inc Side dump loader

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663266A (en) * 1946-12-20 1953-12-22 Joy Mfg Co Rocking axle structure for mining apparatus
US2718318A (en) * 1952-08-27 1955-09-20 Lester J Schmucker Manure loader
US2890805A (en) * 1956-11-27 1959-06-16 John S Pilch Hydraulic system for tractor mounted apparatus
US2874489A (en) * 1957-06-19 1959-02-24 Wayne W Orjala Tool attaching device
US3129832A (en) * 1960-05-18 1964-04-21 Auxiliaire De L Entpr Soc Multiple-purpose power shovel
US3047170A (en) * 1960-06-13 1962-07-31 Hy Dynamic Co Earth handling apparatus
US3349932A (en) * 1963-08-02 1967-10-31 Wagner Mfg Inc Side dump loader

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3658198A (en) * 1970-01-26 1972-04-25 Caterpillar Tractor Co Loader bucket mounting assembly
US3765553A (en) * 1970-05-08 1973-10-16 H Schaeff Vehicle with two earthworking attachments
US3814272A (en) * 1971-06-14 1974-06-04 R Spratt Balanced fork lift truck
US4145073A (en) * 1977-04-07 1979-03-20 Caterpillar Tractor Co. Lockup system for a vehicle suspension mechanism
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
US7581341B1 (en) * 2008-05-23 2009-09-01 Reeves Jr James B Wheel loader
US10626576B2 (en) 2016-12-16 2020-04-21 Clark Equipment Company Loader with telescopic lift arm
USD832552S1 (en) 2017-10-12 2018-10-30 Clark Equipment Company Lift arm for loader
USD832551S1 (en) 2017-10-12 2018-10-30 Clark Equipment Company Loader

Also Published As

Publication number Publication date
GB1233786A (es) 1971-05-26
FR1582398A (es) 1969-09-26
DE1781300A1 (de) 1970-12-03

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