EP3755845A1 - Improved work machine bucket having a variable capacity - Google Patents

Improved work machine bucket having a variable capacity

Info

Publication number
EP3755845A1
EP3755845A1 EP19705359.8A EP19705359A EP3755845A1 EP 3755845 A1 EP3755845 A1 EP 3755845A1 EP 19705359 A EP19705359 A EP 19705359A EP 3755845 A1 EP3755845 A1 EP 3755845A1
Authority
EP
European Patent Office
Prior art keywords
bucket
extension plate
respect
work machine
volume
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.)
Granted
Application number
EP19705359.8A
Other languages
German (de)
French (fr)
Other versions
EP3755845B1 (en
Inventor
Davide Caporale
Mauro LOPREVITE
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 Italia SpA
Original Assignee
CNH Industrial Italia SpA
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 CNH Industrial Italia SpA filed Critical CNH Industrial Italia SpA
Publication of EP3755845A1 publication Critical patent/EP3755845A1/en
Application granted granted Critical
Publication of EP3755845B1 publication Critical patent/EP3755845B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • 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
    • 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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
    • 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
    • E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor

Definitions

  • the bigger is the bucket the greater is the quantity of material that the work machine may handle.
  • a big bucket is heavier and more difficult to control with respect to a small bucket.
  • a big capacity may be required only in peculiar working operations.
  • Figure 1 is a perspective exploded view of a bucket for work machine according to the present invention.
  • Figure 6 is a perspective view of the bucket of figure 3 when attached to a carrying element of a work machine
  • rear wall 3c comprises a cut-out portion 20 extending from upper edge of rear wall 3c and having a length and a width so as to allow the movement of extension plate 11 between first and second position with respect to bucket 11 without interfering with connection means 8.
  • cut-out portion 20 is therefore wider than the space interposed between flanges 9 added to the width of flanges 9 and its height is at least equal to the maximum displacement of extension plate 11 with respect to bucket 1.
  • extension plate 11 In a first operative condition of bucket 1, as disclosed in figure 4, extension plate 11 is totally housed inside volume 4 and therefore the volume of bucket 1 is at its minimum value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)

Abstract

Bucket (1) for a work machine (100) comprising a plurality of walls (2, 3) defining a volume (4) for handling material, the bucket (1) comprising extension means configured to vary the volume (4) from a first value to a second value while a width (W) of the bucket (1) remains constant.

Description

IMPROVED WORK MACHINE BUCKET HAVING A VARIABLE CAPACITY
TECHNICAL FIELD
The present invention concerns a bucket for a work machine, in particular bucket having variable capacity for an earth moving machine, e.g. a scraper.
BACKGROUND OF THE INVENTION
Earth moving machines, e.g. a scraper or a wheel loader, comprise a bucket carried by hydraulic controlled booms and configured to allow the handling of a preset quantity of material. The quantity of material which is handled by the bucket is directly proportional to the capacity, i.e. the volume, of the bucket.
Obviously, the bigger is the bucket, the greater is the quantity of material that the work machine may handle. However a big bucket is heavier and more difficult to control with respect to a small bucket. Moreover, a big capacity may be required only in peculiar working operations.
To address such problem, it is known to provide bucket having a variable capacity.
Examples of suck buckets are disclosed in GB2541751 A or US6997513 B2. These buckets comprise a width that is reversibly adjustable between a minimum and a maximum value. Such solutions however are not suitable in condition of narrow space . Other known solution is to provide so-called "rock guard" or "spill guard", e.g. as ones disclosed in W02015006809 A1 or US201724101 Al, attached to a top edge of the bucket and configured to avoid material to fall out from the bucket when this latter is full of material and it is handled by booms of work vehicle. However such guards are not suitable for really increasing the capacity of the bucket and moreover they limit the movement of the bucket; indeed, a rotation around an axis passing from the connection of the bucket with booms of work machine is limited in view of such guards.
Therefore, the need is felt to provide a bucket which has a variable capacity while not interfering work machine movements and requirements.
An aim of the present invention is to satisfy the above mentioned needs in an optimized and cost-effective way.
SUMMARY OF THE INVENTION
The aforementioned aim is reached by a bucket for work machine having a variable capacity as claimed in the appended set of claims.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the present invention, a preferred embodiment is described in the following, by way of a non-limiting example, with reference to the attached drawings wherein:
• Figure 1 is a perspective exploded view of a bucket for work machine according to the present invention;
• Figure 2 is a perspective view of a bucket for work machine according to the present invention in a first operative condition;
• Figure 3 is a perspective view of a bucket for work machine according to the present invention in a second operative condition;
• Figure 4 is a lateral view of the bucket of figure 2;
• Figure 5 is a lateral view of the bucket of figure 3;
• Figure 6 is a perspective view of the bucket of figure 3 when attached to a carrying element of a work machine;
• Figure 7 is a lateral schematic view of a work machine comprising a bucket according to the present invention in two operative conditions;
• Figure 8 is a lateral schematic view of a work machine comprising a bucket according to the present invention in a third operative condition;
DETAILED DESCRIPTION OF THE INVENTION
Figures 1 to 5 show a bucket 1 for a work machine essentially comprising a bottom wall 2 and a plurality of outside walls 3 which define a volume 4 in which material may be housed to be handled. Volume 4 is the capacity of the bucket .
According to the described and non-limiting embodiment, bucket 1 comprises a bottom wall 2 having a curved and concave shape towards volume 4 and four outside walls 3, in particular a pair of lateral walls 3a, a front wall 3b and a rear wall 3c. Outside walls 3 are fixedly connected together, preferably made as one piece, e.g. by casting.
The distance between lateral walls 3a defines a width W of bucket 1, while the distance between bottom wall 2 and respective upper edges of front, rear and lateral walls 3a, 3b and 3c defines a height H of bucket 1.
As better shown in figure 6, front wall 3b may comprise, at its outer edge, a plurality of teeth 7 configured to scratch the material to be handled. According to the described embodiment, teeth 7 extend parallel with respect to front wall 3b and getaway from outer edge of front wall 3b.
Bucket 1 may further comprise connection means 8 configured to allow the connection of bucket 1 to work machine. According to the described embodiment connections means 8 may comprise a pair of flanges 9 extending perpendicularly from rear portion 3c opposite with respect to volume 4 and spaced apart symmetrically with respect to a symmetry plane of bucket 1. Flanges 9 may be provided with holes 9a configured to allow the insertion of an element fixed to booms of work machine so as to connect bucket 1 to work machine 1 in a fixed or rotatable manner.
According to the present invention bucket 1 further comprises extension means configured to vary the volume 4 of bucket 1 from a first, minimum, value to of volume 4 a second, maximum, value of volume 4 of bucket 1 while the width W of bucket 1 remains constant.
According to the described embodiment extension means comprise an extension plate 11 carried by bucket 1 and configured to assume a position with respect to the bucket 1 from a first position defining a minimum height H' of bucket 1 and a second position defining a maximum height H of bucket 1.
Preferably extension plate 11 is carried by bucket 1 and is housed inside volume 4.
In particular, extension plate 11 may comprise a pair of lateral walls 12a, 12b and a rear wall 13, each having a shape complementary with respect to the shape of lateral walls 3a and rear wall 3c of bucket 1 towards these latter are faced.
Advantageously extension plate 11 may comprise guide means configured to guide the movement of extension plate 11 with respect to bucket 1. Guide means may comprise a guide 15 realized in each of lateral walls 12a, 12b configured to cooperate in sliding manner with respective protrusions 17 extending perpendicularly from lateral walls 3a of bucket 1.
Preferably, guide 15 are realized as two parallel openings 18, preferably having a substantial rectangular shape, in which protrusions 17, having a shape complementary with respect to the shape of the opening 18, may slide. Advantageously protrusions 17 may be realized as fixing screws configured to unscrew from lateral walls 3a of bucket 1 allowing lateral walls 12, 12b to slide with respect to lateral walls 3a and to screw into lateral walls 3a to fix lateral walls 12, 12b on this latter.
Extension means are further configured not to interfere with movements of bucket 1 with respect to work machine 1. Accordingly extension plate 11 comprises a cut-out portion 20 configured to avoid undesired contact between extension plate 11 and connection means 8.
According to the described embodiment, rear wall 3c comprises a cut-out portion 20 extending from upper edge of rear wall 3c and having a length and a width so as to allow the movement of extension plate 11 between first and second position with respect to bucket 11 without interfering with connection means 8. According to the described embodiment cut-out portion 20 is therefore wider than the space interposed between flanges 9 added to the width of flanges 9 and its height is at least equal to the maximum displacement of extension plate 11 with respect to bucket 1.
The operation of the bucket 1 according the present invention is as follows.
In a first operative condition of bucket 1, as disclosed in figure 4, extension plate 11 is totally housed inside volume 4 and therefore the volume of bucket 1 is at its minimum value.
In a second operative condition of bucket 1, as disclosed in figure 5, extension plate 11 is slid so that extension plate 11 reaches its maximum displacement therefore the volume of bucket 1 is at its maximum value.
Sliding of extension plate 11 with respect to bucket 1 is realized thanks to gravity. When bucket 1 is in a rest condition, i.e. with bottom wall 2 faced with respect to ground, protrusion 17 are placed in correspondence of an upper extremity of opening 18 and therefore extension plate is totally housed inside volume 4. Conversely, when bucket 1 is in an operative condition (see figure 7), i.e. with bottom wall 2 faced opposite with respect to the ground, extension plate 11 slides to that protrusion 17 are placed in correspondence of a lower extremity of opening 18 and extension plate 11 reaches its maximum height.
Figure 7 shows a work machine 100, e.g. a scraper, comprising a boom 101 hydraulically operated and a bucket 1 as described above coupled to the extremity of the boom 101.
The user can therefore unscrew protrusion 17 and control boom 101 which operates bucket 1 in scraping position, i.e. with bottom wall 2 faced opposite with respect to the ground and teeth 7 directed to this latter. In this condition, as described above, extension plate 11 slides to define a maximum value of volume 4. Then, user may fix screw protrusion 17 into lateral walls 3a so as to fix extension plate 11 with respect to bucket 1. Then, the user may operate boom 101 to handle material which can be safely handled by work machine 100.
It has to be noted that, once extracted from volume 4, extension plate 11 does not interfere with the visual field of the user of the work machine 100. In fact, as shown in figure 8, a user from a cabin of said machine 100 can always see where teeth 7 of bucket 1 are directed. This is achieved because the height H' of bucket 1, when extension plate 11 is totally extracted from volume 4, is always lower than the height of teeth 7 with respect to bottom plate 2.
In view of the foregoing, the advantages of bucketl having a variable volume for work machine 100 according to the invention are apparent.
Thanks to the above described extension means, volume of bucket 1 may be varied without increasing the width of the bucket 1. Moreover, the use of a sliding extension plate 11 achieve such result in a cost-effective way.
The use of an extension plate 11 may increase the volume of bucket 1 of at least 15%.
Extension plate 11 may be also customized for different shape of bucket 1, without limitation of movement of bucket 1 with respect to boom 101 and always allowing the sight of teeth 7.
It is clear that modifications can be made to the described bucket having a variable volume for work machine which do not extend beyond the scope of protection defined by the claims.
For example, shapes and number of walls of bucket 1 and extension plate 11 may be varied in function of the typology of work machine.
Moreover, extension plate 11 may be slid with respect to bucket 1 thanks to a mechanical or hydraulic system. Further, extension plate 11 may be carried externally with respect to volume 4.

Claims

1.- Bucket (1) for a work machine (100) comprising a plurality of walls (2, 3) defining a volume (4) for handling material, said bucket (1) being characterized by comprising extension means configured to vary said volume (4) from a first value to a second value while width (W) of said bucket
(I) remains constant.
2.- Bucket according to claim 1, characterized in that said extension means comprises an extension plate (11) carried in a sliding manner by said bucket (1) .
3.- Bucket according to claim 2, characterized in that said extension plate (11) carried slides vertically with respect to said bucket (1) .
4.- Bucket according to claim 2 or 3, characterized in that said extension plate (11) slides with respect to said bucket (1) inside said volume (4) .
5.- Bucket according to any of claims 2 to 4, characterized in that said extension plate (11) comprise at least a pair of lateral walls (12a, 12b) and a rear wall (13) each respectively faced to one of said walls (2, 3) of said bucket towards and having a shape respectively corresponding to the shape of said faced walls (2, 3) .
6.- Bucket according to any of claims 2 to 5, characterized in that said sliding of said extension plate
(II) with respect to said bucket (1) is achieved by gravity.
7.- Bucket according to any of claims 2 to 6, characterized in that said sliding of said extension plate (11) with respect to said bucket (1) is achieved by guide means .
8.- Bucket according to claim 7, characterized in that said guide means comprise at least one opening (18) realized in one between said extension plate (11) and said walls (3a, 3b) and at least one protrusion (17) extending from the other of said extension plate (11) and said walls (3a, 3b), said at least one protrusion (17) being configured to cooperate in sliding manner in said at least one opening (18) .
9.- Bucket according to claim 8, characterized in that said bucket (1) comprises connection means (8) configured to connect said bucket (1) to a boom (101) of said work vehicle (100) and in that extension plate (11) comprises a cut-out portion (20) configured to allow the movement of said extension plate (11) with respect to said bucket (1) without interfering with said boom (101) of said work vehicle (100) .
EP19705359.8A 2018-02-23 2019-02-19 Improved work machine bucket having a variable capacity Active EP3755845B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000002984A IT201800002984A1 (en) 2018-02-23 2018-02-23 IMPROVED SHOVEL WITH VARIABLE CAPACITY
PCT/EP2019/054040 WO2019162249A1 (en) 2018-02-23 2019-02-19 Improved work machine bucket having a variable capacity

Publications (2)

Publication Number Publication Date
EP3755845A1 true EP3755845A1 (en) 2020-12-30
EP3755845B1 EP3755845B1 (en) 2023-10-11

Family

ID=62089987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19705359.8A Active EP3755845B1 (en) 2018-02-23 2019-02-19 Improved work machine bucket having a variable capacity

Country Status (3)

Country Link
EP (1) EP3755845B1 (en)
IT (1) IT201800002984A1 (en)
WO (1) WO2019162249A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018213863A1 (en) * 2017-05-23 2018-11-29 Austin Engineering Ltd Bucket

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US1338219A (en) * 1917-02-16 1920-04-27 Pierpont E Dutcher Self-operating latch
US3380604A (en) * 1966-07-28 1968-04-30 Ford Motor Co Backhoe bucket construction
JPS6023526A (en) * 1983-07-15 1985-02-06 Tokyo Tone Kaihatsu Kk Bucket for shovel car
US4890400A (en) * 1988-10-27 1990-01-02 Long Jeffrey D Bucket attachment for tractor blade
JPH0667480U (en) * 1993-03-10 1994-09-22 北垣建設株式会社 Bucket device for hydraulic excavator
GB9307753D0 (en) * 1993-04-15 1993-06-02 Taylor William Bucket based silage block cutter
DE19640177B4 (en) * 1995-10-04 2005-06-23 Müller, Karlheinz Baggerlöffel
US6098321A (en) * 1999-05-07 2000-08-08 Logan; John Duncan Bucket converter for an excavation bucket
JP3761149B2 (en) * 2000-09-29 2006-03-29 日立建機株式会社 Weighing bucket and weighing device
JP4007768B2 (en) * 2001-03-19 2007-11-14 Ｔｃｍ株式会社 Bucket equipment
US6997513B2 (en) 2003-08-13 2006-02-14 Salubrion Llc Chair for healthy sitting
US6994513B2 (en) * 2003-11-04 2006-02-07 Richard Harris Variable width backhoe bucket
GB2410239B (en) * 2004-01-21 2006-12-13 Brian Mence Adjustable width excavator bucket
CN201443083U (en) * 2009-04-08 2010-04-28 吉孟福 Variable capacity bucket
US9529518B2 (en) 2012-05-25 2016-12-27 Panasonic Intellectual Property Corporation Of America Information processing device, information processing method, and information processing program
AU2013207573A1 (en) 2013-07-16 2015-02-05 G&Gmf Pty Ltd A Bucket for an Earth Moving Machine
CN104452848A (en) * 2014-12-24 2015-03-25 常熟市康达电器有限公司 Variable volume mining excavator bucket
GB2541751A (en) 2015-08-31 2017-03-01 Anthony Furlong Patrick Hydraulic variable extending digger bucket
WO2018141021A1 (en) * 2017-02-02 2018-08-09 Excavator Innovations Pty Ltd A bucket for earthmoving machines

Also Published As

Publication number Publication date
EP3755845B1 (en) 2023-10-11
WO2019162249A1 (en) 2019-08-29
IT201800002984A1 (en) 2019-08-23

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