US3869054A - Bucket having a mobile back - Google Patents

Bucket having a mobile back Download PDF

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Publication number
US3869054A
US3869054A US443030A US44303074A US3869054A US 3869054 A US3869054 A US 3869054A US 443030 A US443030 A US 443030A US 44303074 A US44303074 A US 44303074A US 3869054 A US3869054 A US 3869054A
Authority
US
United States
Prior art keywords
shell
bucket
connecting element
main back
internal face
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
US443030A
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English (en)
Inventor
Rene V Moreau
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.)
Poclain SA
Original Assignee
Poclain SA
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 Poclain SA filed Critical Poclain SA
Application granted granted Critical
Publication of US3869054A publication Critical patent/US3869054A/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
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/407—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with ejecting or other unloading device

Definitions

  • ABSTRACT A bucket for a public works machine which bucket has a shell including a sole plate and a back plate, the latter being movable between a closed position and an open position relative to the shell, in the latter of which positions the back plate defines with the sole plate a passage for unloading the bucket, a connecting member being provided on the back plate and movable relative theretobetween a connected position in which it forms a part of the wall of the bucket in extension of the sole plate and back plate and a retracted position in which it is substantially clear of the path of material when falling through the passage.
  • the present invention is intended to efficiently remedy the disadvantages of the known solutions and, in order to doso, proposes a novel bucket with a mobile back which has both good loading and unloading characteristics.
  • the invention therefore relates to a bucket having a mobile back comprising:
  • a connecting element which is arranged on the said main back so as to be retractable relative to the internal face of the said main back, remote from the said axis, and which can occupy two positions, one known as the connected position, in which it forms a substantially contiguous extension of the internal faces of the shell and of the main back, and one known as the retracted position, in
  • a second position adjustment organ being linked between the said connecting element and one of the shell and main back.
  • the connecting element has a cylindrical internal face with a continuous curve and, in the connected position, the said cylindrical face is arranged concomittantly substantially in the extensions of the internal faces of the shell and of the main back.
  • the connecting element is mounted to pivot on the main back about another axis, which is parallel to the said axis and which is arranged on the main back opposite to the said axis.
  • the second position adjustment organ comprises the position adjustment organ itself and of a stop for limiting the retraction of the connecting element relative to the internal face of the main back.
  • the stop is rigidly attached to the main back, on which it is so arranged that the plane parallel to the said other axis and containing the ends of the internal face of the connecting element is substantially situated in the plane ofthe internal face of the main back in the retracted position of this connecting element.
  • the adjustment organ comprises a ram. 1
  • FIGS. 1, 2 and 3 are side elevations of an embodiment of bucket in accordance with the invention, in three different conditions.
  • FIG. 4 is a view along arrow F of the bucket of FIG. 1.
  • a given element is marked with the same reference number followed by the index a, b or c, respectively.
  • Thebucket of FIG. 1 consists of a shell la having a sole-piece 2a and side cheeks 3a,. and of a main back 4a, which is mounted to pivot on the shell 1a about an axis 5a.
  • the internal face 6a of the main back 4a is substantially flat and is not connected to the internal face of the sole-piece 2a, which is also substantially flat.
  • a connecting element 8a enables the internal faces 6a and 7a to be effectively connected.
  • the connecting element 8a is mounted to pivot on the main back 4a about an axis 9a.
  • Its internal face 10a is cylindrical, with a continuous curve, along the arrow H, and is connected substantially tangentially to the internal faces 6a and 7a., while also bearing against the shell 1a and the bucket being closed in the configuration shown in FIG. 1.
  • a stop 11a is attached to the main back 4a and can obstruct a portion 12a of the rear face of the connecting element to limit the pivot range of the latter relative to the back 4a.
  • a stop 13a is attached to the main back 4a and can obstruct the face 14a of an arm 15a rigidly attached to the shell 1a.
  • a ram 16a is linked by axes 17a and 18a respectively between the shell la and the connecting element 8a. The ram 16a is shown completely extended.
  • the main back 4a is mounted to pivot at the end of the dipper-arm 19a of a public works machine, such as a loader, by means of an axis 20a.
  • a rocking lever 21a is pivoted on the dipperarm 19a about an axis 22a and is connected to the main back 40 by a rod 230, which is itself pivoted on the said rocking lever about an axis 24a and on the said main back about an axis 25a.
  • -A ram 26a is linked between the rocking lever 21a by an axis 27a and the dipper-arm 19a.
  • the dipper-arm 19a is so arranged that the solepiece 2a can be positioned substantially horizontal, level with the material to be loaded.
  • the'dipper-arm has come to 19b and has been lifted, so as to arrange the bucket in the unloading position.
  • the main back has come to 4b, its internal face 6b then being substantially vertical.
  • the shell lb has retained the same position relative to the back 4b as that occupied by the shell la relative to the back 4a.
  • the internal face 7b of the sole-piece 2b of the shell is inclined downwards and towards the connecting element 8b.
  • this connecting element 8b has changed its position relative to the back 4b, so that the plane P passing through the ends of its internal face b is arranged substantially in the extension of the internal face 6b of the main back, the said connecting element 8b also being arranged set back from this internal face 6b.
  • This modification of the position of the connecting element 8b relative to the main back 4b has been caused by the partial retraction of the rod of the ram 16b into the cylinder and by the stop 11b impinging against the portion 12b of the rear face of the connecting element 8b.
  • the bucket is already slightly open, the connecting element 8b no longer being contiguous with the sole-piece 2b and a passage 28 being formed between these two parts.
  • the dipper-arm 190 has remained in the position which it occupied in FIG. 2, the main back 40 also remaining in the same position relative to the dipper-arm 19c as the back 4b occupied relative to the dipper-arm 19b.
  • the internal face 6c of the main back 40 is therefore substantially vertical.
  • Retraction of the ram 16c is now complete, so that not only does the portion 120 of the rear face of the connecting element 80 bear against the stop 110, but also the face 140 of the arm c rigidly attached to the shell 1c bears against the stop 13c attached to the main back 40.
  • the shell 10 is then so arranged that the face 7c of the sole-piece 2c is very much inclined and practically vertical.
  • a large passage 29 is formed between the internal faces 6c and 7c, the bucket then being completely open. It should also be noted that, taking into account the abutment of the face 120 against the stop 11c, the plane R joining the ends of the face 10c of the connecting element 8c is here again, as in FIG. 2, substantially merged with the plane of the internal face 6c, the said connecting element also being arranged set back from the internal face 60.
  • FIG. 4 again shows the elements already described with reference to FIG. 1 and is self-explanatory. However, the presence should be noted of two rams 16a linked between the shell la and the connecting element 8a.
  • the connecting element 8a concerns the shape of the connecting element 8a and in particular of its internal face 100. It is quite obvious that it is preferable to form the said element with the internal face 10a having the continuity of curvature shown and the possibility of tangential connection to the internal faces 6a and 7a. However, it remains possible, admitting a slight disadvantage, to simplify the shape of the connecting element St: by forming the internal face 10a as a flat face. Such a flat face would not be connected tangentially to either of the internal faces 6a and 7a, but could nevertheless be connected contiguously to the said faces and thus permit a less angular connection than that of a conventional mobile back to the sole-piece of a conventional shell, which connection generally forms an acute angle.
  • the material contained in the bucket must then be unloaded.
  • the first phase of unloading consists of arranging the face 6b much inclined and in fact substantially vertical. The material can therefore easily slide along this face 6b.
  • the connecting element 8b would constitute an obstruction to the evacuation of the material, which would impinge against it after sliding along the face 6b.
  • Such is not the case with the use of the bucket described, in which the connecting element 8b has been completely retracted relative to the plane of the face 6b. Consequently, from this point of view, the conditions for satisfactory unloading have been combined, the passage 28 being perfectly clear.
  • the proposed bucket permits entirely satisfactory loading and unloading.
  • the ram 8b firstly has the function of retracting the connecting element 8b relative to the plane of the internal face 6b of the back 4b, and then, once this retraction has been effected, the function of opening the shell 1b relative to the said main back 4b.
  • the connecting element 812 which starts by ,being retracted.
  • Bucket having a mobile back comprising:
  • the said mobile back which is mounted to pivot on the said shell about an axis
  • a position adjustment organ which is linked between the said back and the said shell to adjust their relative pivoting in at least two positions, in the first of which the said back bears against the shell and co-operates with the latter to form the complete bucket provided with a loading opening, and in the second of which this back is distant from the rear face of the shell on the side opposite to the loading opening relative to this shell, this rear face itself being opposite to the said loading opening, this rear face of the shell and the internal face of the said back in the second position defining therebetween a passage, in particular for evacuation of the material which may be contained in the shell, the back itself comprising a main back which is mounted to pivot relative to the shell about the said axis,
  • a connecting element which is arranged on the main back retractably relative to the internal face of the said main back, remote from the said axis, and which can occupy two positions, one known as the connected position, in which it forms a substantially contiguous extension of the internal faces of the shell and of the main back, and one known as the retracted position, in which it is effectively retracted relative to the plane of the internal face of this main back, and a second position adjustment organ being linked between the said connecting element and one of the said shell and main back.
  • the connecting element has a cylindrical internal face with a continuous curvature and in that in the connected position the said cylindrical face is arranged substantially in the extension of the internal face of the shell.
  • the second position adjustment organ comprises the position adjustment organ itself and of a stop for limiting the retraction of the connecting element relative to the internal face of the main back.
  • the other position adjustment organ comprises the position adjustment organ itself and a stop for limiting the retraction of the connecting element relative to the internal face of the main back, and in which the stop is rigidly attached to the main back, on which it is so arranged that the plane parallel to the said other axis and containing the ends of the internal face of the connecting element is situated substantially in the plane of the internal face of the main back in the retracted position of this connecting element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Shovels (AREA)
US443030A 1973-03-21 1974-02-15 Bucket having a mobile back Expired - Lifetime US3869054A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7310167A FR2222495A1 (it) 1973-03-21 1973-03-21

Publications (1)

Publication Number Publication Date
US3869054A true US3869054A (en) 1975-03-04

Family

ID=9116647

Family Applications (1)

Application Number Title Priority Date Filing Date
US443030A Expired - Lifetime US3869054A (en) 1973-03-21 1974-02-15 Bucket having a mobile back

Country Status (11)

Country Link
US (1) US3869054A (it)
JP (1) JPS578250B2 (it)
AR (1) AR201496A1 (it)
BE (1) BE812585A (it)
BR (1) BR7402044D0 (it)
CA (1) CA990323A (it)
DE (1) DE2410983A1 (it)
ES (1) ES423719A1 (it)
FR (1) FR2222495A1 (it)
GB (1) GB1441233A (it)
IT (1) IT1011584B (it)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080746A (en) * 1977-03-17 1978-03-28 Asbury Industries, Inc. Loader bucket assembly for earth working equipment
US4411583A (en) * 1980-10-27 1983-10-25 Petitto Mine Equipment Repair, Inc. Multi-purpose material handling machine for use in a mine
US5416990A (en) * 1993-12-13 1995-05-23 Otwell; William C. Excavation bucket
US5526591A (en) * 1993-12-13 1996-06-18 Otwell; William C. Excavation bucket and method of digging
EP0985771A3 (de) * 1998-05-15 2000-05-10 Kronenberger, Ernst Josef Anordnung eines Schaufel-Separators an einem Trägergerät
US6467202B1 (en) * 1999-07-01 2002-10-22 Bucyrus International, Inc. Dynamically active dipper door mechanism
US6591521B2 (en) 2000-10-05 2003-07-15 Bucyrus International, Inc. Dipper door and dipper door assembly
US7734251B1 (en) 1981-11-03 2010-06-08 Personalized Media Communications, Llc Signal processing apparatus and methods
CN103174181A (zh) * 2011-12-24 2013-06-26 广西玉柴重工有限公司 一种挖掘机铲斗
US20140165432A1 (en) * 2012-09-05 2014-06-19 Esco Corporation Bucket For Cable Shovel
US10329732B2 (en) * 2015-06-11 2019-06-25 Abgralll Conception Bucket for a construction vehicle used for loading, moving, transporting, pouring or spreading bulk material
US20210230827A1 (en) * 2018-06-06 2021-07-29 Caterpillar Global Mining Llc Face Shovel And Method Of Operation

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081919A (en) * 1977-03-30 1978-04-04 Laserplane Corporation Backhoe bucket
JPS5552437A (en) * 1978-10-06 1980-04-16 Komatsu Ltd Working instrument controller
JPS6026065Y2 (ja) * 1979-12-26 1985-08-05 三菱重工業株式会社 中折式クレ−ンの運転制御装置
JPS5820835A (ja) * 1981-07-31 1983-02-07 Hitachi Constr Mach Co Ltd 腕式作業機のバケツト角制御装置
JPS5833650A (ja) * 1981-08-21 1983-02-26 Hitachi Constr Mach Co Ltd 油圧シヨベルの掘削制御装置
JPS5854136A (ja) * 1981-09-28 1983-03-31 Hitachi Constr Mach Co Ltd 油圧シヨベルの掘削軌跡制御方法
JPS5865823A (ja) * 1981-10-16 1983-04-19 Hitachi Constr Mach Co Ltd 油圧シヨベルの作業軌跡制御装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1493698A (en) * 1923-09-20 1924-05-13 Pearson Sigurd Combined steam-shovel dipper
US3341041A (en) * 1965-12-08 1967-09-12 Int Harvester Co Material handling attachment
US3767070A (en) * 1971-04-13 1973-10-23 Wain Roy Lifting and excavating apparatus
US3772806A (en) * 1972-03-16 1973-11-20 J Meadows Oyster tongs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1493698A (en) * 1923-09-20 1924-05-13 Pearson Sigurd Combined steam-shovel dipper
US3341041A (en) * 1965-12-08 1967-09-12 Int Harvester Co Material handling attachment
US3767070A (en) * 1971-04-13 1973-10-23 Wain Roy Lifting and excavating apparatus
US3772806A (en) * 1972-03-16 1973-11-20 J Meadows Oyster tongs

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080746A (en) * 1977-03-17 1978-03-28 Asbury Industries, Inc. Loader bucket assembly for earth working equipment
US4411583A (en) * 1980-10-27 1983-10-25 Petitto Mine Equipment Repair, Inc. Multi-purpose material handling machine for use in a mine
US7734251B1 (en) 1981-11-03 2010-06-08 Personalized Media Communications, Llc Signal processing apparatus and methods
US5416990A (en) * 1993-12-13 1995-05-23 Otwell; William C. Excavation bucket
US5526591A (en) * 1993-12-13 1996-06-18 Otwell; William C. Excavation bucket and method of digging
EP0985771A3 (de) * 1998-05-15 2000-05-10 Kronenberger, Ernst Josef Anordnung eines Schaufel-Separators an einem Trägergerät
US6467202B1 (en) * 1999-07-01 2002-10-22 Bucyrus International, Inc. Dynamically active dipper door mechanism
US6591521B2 (en) 2000-10-05 2003-07-15 Bucyrus International, Inc. Dipper door and dipper door assembly
CN103174181A (zh) * 2011-12-24 2013-06-26 广西玉柴重工有限公司 一种挖掘机铲斗
CN103174181B (zh) * 2011-12-24 2016-08-24 广西玉柴重工有限公司 一种挖掘机铲斗
US20140165432A1 (en) * 2012-09-05 2014-06-19 Esco Corporation Bucket For Cable Shovel
US10113293B2 (en) * 2012-09-05 2018-10-30 Esco Group Llc Bucket for cable shovel
US10329732B2 (en) * 2015-06-11 2019-06-25 Abgralll Conception Bucket for a construction vehicle used for loading, moving, transporting, pouring or spreading bulk material
US20210230827A1 (en) * 2018-06-06 2021-07-29 Caterpillar Global Mining Llc Face Shovel And Method Of Operation
US11866904B2 (en) * 2018-06-06 2024-01-09 Caterpillar Global Mining Llc Face shovel and method of operation

Also Published As

Publication number Publication date
JPS50603A (it) 1975-01-07
BR7402044D0 (pt) 1974-12-03
JPS578250B2 (it) 1982-02-16
BE812585A (fr) 1974-07-15
GB1441233A (en) 1976-06-30
IT1011584B (it) 1977-02-10
AR201496A1 (es) 1975-03-21
DE2410983A1 (de) 1974-09-26
ES423719A1 (es) 1976-04-16
CA990323A (en) 1976-06-01
FR2222495A1 (it) 1974-10-18

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