US3814471A - Grab buckets - Google Patents

Grab buckets Download PDF

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Publication number
US3814471A
US3814471A US00218072A US21807272A US3814471A US 3814471 A US3814471 A US 3814471A US 00218072 A US00218072 A US 00218072A US 21807272 A US21807272 A US 21807272A US 3814471 A US3814471 A US 3814471A
Authority
US
United States
Prior art keywords
rod part
cylinder
lower rod
piston
hydraulic motor
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
US00218072A
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English (en)
Inventor
Y Coeurderoy
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 US3814471A publication Critical patent/US3814471A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/14—Grabs opened or closed by driving motors thereon
    • B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
    • 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
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • E02F3/4135—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device with grabs mounted directly on a boom

Definitions

  • this adjusting device being coupled directly to the said two parts of the rod.
  • One application of the invention is the manufacture of an orientable grab bucket which is compact and which has well protected control members.
  • the present invention relates to a drag bucket provided with a jack, the piston rod of which comprises two parts that are orientable with respect one to the other.
  • the invention has beendeveloped in this way and has for its object a grab bucket constituted by a doubleaction jack comprising a body, inside which a piston may move in translation, integral with a piston rod composed of two parts mounted coaxially and so as to rotate with respect to one another.
  • This grab bucket comprises in addition a device for adjusting the angular orientation of the two parts of the rod of the piston, this adjusting device being coupled directly to the said two parts of the rod of the piston.
  • a hollow is advantageously made in at least one of the two parts of the rod of the piston, whilst the adjusting device is disposed at least partially inside said hollow.
  • this adjusting device preferably comprises a hydraulic drive motor provided with two chambers selectively connected to a source of pressurized fluid and to a discharge tank by two conduits, in manner known per se, whilst said two conduits are made in one of the two partsof the rod of the piston.
  • the adjustment device often comprises, in manner known per se, a speed reducer coupled to the output member of the hydraulic drive motor.
  • FIG. 1 is an elevational view, with part section, of a bucket according to the invention
  • FIG. 2 is a detailed view of the device for adjusting the orientation of the bucket of FIG. 1;
  • FIG. 3 schematically shows the arrangement of the speed reducer, which the adjusting device of FIG. 2 is provided with;
  • FIG. 4 is a section along IV-lV of FIG. 2;
  • HO. 5 is a section along VV of FIG. 2.
  • HO. 1 comprises, in known manner, a control jack, having piston means constituted by a lower rod part 2 mountedto pivot on an upper rod part 1, the piston member 1a, integral with the upper rod part 1, moving inside the cylinder 9.
  • the working members comprising shell members 5 and 6 are articulated on a rocking lever 4 fixed to the lower end of the lower rod part 2 of the piston rod.
  • Connecting rods 7 and 8 are coupled between the cylinder 9 and the shell members 5 and 6 respectively.
  • the hollow in the upper rod part 1, inside which the lower part 2 partly penetrates constitutes the housing of a hydraulic motor 3 coupled to a speed reducer 3a.
  • the hydraulic motor 3 has its casing integral in rotation with the upper rod part 1 of the piston means, whilst the output member of the reducer 3a is integral in rotation with the lower rod part 2 of the piston means.
  • Conduits l6 and 17 made in the upper rod part 1 of the piston means are connected, on the one hand, to the hydraulic motor 3 in order selectively to ensure the supply of pressurised fluid or the return to its discharge tank, for
  • the piston member In defines, in cooperation with the upper rod part 1 and lower part 2 of the piston means and with the cylinder 9, the upper and lower chambers 20 and 21 respectively of the jack.
  • FIGS. 2 and 3 show in detail the assembly of the hydraulic motor 3 and the speed reducer 3a.
  • the housing of the motor 3 is fixed by screws 22 to the upper rod part 1.
  • the speed reducer is constituted by a planetary gear train.
  • a pinion 3f is mounted integral with the driven shaft 3e of the motor 3 and meshes, in the present case, with three satellites 3c, each of them being fixed to an axis 3g mounted to pivot on the lower rod part 2 of the piston means.
  • the lower rod part 2 is locked in translation on the upper rod part 1 of the piston means by means of half-rings l0 and l l, the nut 12 and the counternut 13.
  • conduits l6 and 17 two other conduits l8 and 19, also arranged inside the. upper rod part 1 of the piston rod, selectively connect the chambers 20 and 21 of the jack to the pressurised fluid supply and to the discharge tank.
  • the upper rod part 1 of the piston means is provided in known manner with a stirrup-shaped member 23 for connecting the bucket to the beam or jib of the public works machine which is equipped therewith.
  • this bucket which comprises a jack having a piston rod in two parts, has, ipso facto, the advantages inherent in this arrangement.
  • the embodiment of the control of the shells 5 and 6 of 3 the bucket and the integration of the rotating joint, permitting the supply of the jack, with the jack itself, will be noted in particular.
  • the mechanism of the orientation adjusting device when the latter is disposed in the rod of the jack, as in the bucket that has been described, is protected from any contamination, but also lubricated correctly and easily, simply by the outflow of leakages of the hydraulic fluid controlling the hydraulic motor 3.
  • conduits 16,17, l8, 19 which have shown substantially diametrically opposite in twos, the conduits of one of the groups being shifted angularly by 90 with respect to the conduits of the other group, could thus be disposed differently, if this proved necessary, or, even more simply, if this contributed to facilitating the manufacture and/or assembly for example.
  • this adjusting device in order to be able to house the device for adjusting the orientation of the bucket, in the housing, which is necessarily not very voluminous, of the piston rod, this adjusting device is necessarily constituted by the assembly of a relatively rapid hydraulic motor 3 with a speed reducer 3a. Nevertheless, depending on the dimensions of the control jacks of the buckets and of the hydraulic motors which may be made, the speed reducer 3a is not always necessary. In this case, the hydraulic motor alone constitutes the device for adjusting the orientation of the bucket.
  • a hydraulically operated grab bucket comprising a hydraulic cylinder, working members pivotally connected to said cylinder, piston means positioned on the interior of said cylinder, said piston means including a piston member, an upper rod part and a lower rod part respectively extending from opposite ends of said cylinder, said lower rod part extending from said cylinder and being connected to said working members, said 'upperrodpart being connectable externally of the cylinder to a supporting means, power adjusting means within the interior of said cylinder connecting the lower rod part to the upper rod part for enabling rotational adjustment of the lower rod part with respect to the upper part so as to effect a rotary positioning of said working members in a desired position wherein said piston member has an axial chamber into which axial chamber the upper end of said lower rod part extends with said adjusting means engaging the upper end of said lower rod part in said chamber.
  • said adjusting means includes a speed reducercoupled between the output of the hydraulic motor and the upper end of the lower rod part.
  • the invention of claim 4 additionally including first and second conduits extending through said upper rod part and connected to said hydraulic motor for providing power fluid to said hydraulic motor.
  • a hydraulically operated grab bucket comprising a hydraulic cylinder, working members pivotally connected to said cylinder, piston means positioned on the interior of said cylinder, said piston means including a piston member, an upper rod part and a lower rod part respectively extending from opposite ends of said cylinder, said lower rod part extending from said cylinder and being connected to said working members, said upper rod part being connectable externally of the cylinder to a supporting means, power adjusting means in-.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Manipulator (AREA)
US00218072A 1971-01-18 1972-01-17 Grab buckets Expired - Lifetime US3814471A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7101530A FR2122294B1 (de) 1971-01-18 1971-01-18

Publications (1)

Publication Number Publication Date
US3814471A true US3814471A (en) 1974-06-04

Family

ID=9070453

Family Applications (1)

Application Number Title Priority Date Filing Date
US00218072A Expired - Lifetime US3814471A (en) 1971-01-18 1972-01-17 Grab buckets

Country Status (9)

Country Link
US (1) US3814471A (de)
JP (1) JPS55314B1 (de)
BE (1) BE778105A (de)
BR (1) BR7200244D0 (de)
DE (1) DE2201871C3 (de)
ES (1) ES398975A1 (de)
FR (1) FR2122294B1 (de)
GB (1) GB1335501A (de)
IT (1) IT951089B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059886A (en) * 1976-02-09 1977-11-29 International Harvester Company Hydraulic actuated grab bucket
US4333676A (en) * 1978-09-02 1982-06-08 Firma Thumm Olhydraulische Antriebe GmbH Rotational mechanism for an excavator grab bucket
US5375348A (en) * 1992-04-23 1994-12-27 Japanic Corporation Deep excavator
US5443294A (en) * 1993-09-22 1995-08-22 Hawco Manufacturing Co. Single-line clamshell bucket
US6643957B2 (en) * 2000-08-04 2003-11-11 Reel Sa Unit for the collection, cleaning and calibration of electrolysis pots used for aluminium production
US20110266279A1 (en) * 2009-01-08 2011-11-03 E.C.L. Fastening device for a collector of solid remains swiveling at the end of a mobile arm in particular fastening device for articulated buckets of a crust shovel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3818177B4 (de) * 1988-05-28 2004-04-29 Heinz Thumm Ölhydraulische Antriebe GmbH Drehvorrichtung für hängende Lasten
IT1236282B (it) * 1989-11-20 1993-02-02 Maurizio Costantini Articolazione con collegamento idraulico rotante in particolare per macchine operatrici.
FR2663383B1 (fr) * 1990-06-19 1992-10-30 Douce Jacques Dispositif de liaison pivotante avec une tige ou analogue, notamment une tige de verin, et benne preneuse a verin d'actionnement ainsi equipee.
DE29700491U1 (de) * 1997-01-14 1997-03-13 Bümach Engineering International B.V., Emmen Universalantrieb für Greifer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314709A (en) * 1964-03-25 1967-04-18 Poclain Sa Hydraulically operated mechanical grab
US3510018A (en) * 1968-02-27 1970-05-05 Bucyrus Erie Co Cable support for the bucket attachment of a stick clam excavator or the like

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1136481A (fr) * 1955-10-13 1957-05-23 Poclain Atel Benne-preneuse à commande hydraulique
FR1416777A (fr) * 1964-12-04 1965-11-05 Projectile & Engineering Compa Dispositif permettant de communiquer un mouvement de rotation et un déplacement linéaire à un organe mécanique
US3413029A (en) * 1966-08-01 1968-11-26 Esco Corp Material handling apparatus
FR1508347A (fr) * 1966-11-24 1968-01-05 Poclain Sa Ensemble d'orientation facilement démontable pour benne preneuse d'engin de terrassement
US3462029A (en) * 1968-02-02 1969-08-19 Bucyrus Erie Co Rocker support for bucket attachment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314709A (en) * 1964-03-25 1967-04-18 Poclain Sa Hydraulically operated mechanical grab
US3510018A (en) * 1968-02-27 1970-05-05 Bucyrus Erie Co Cable support for the bucket attachment of a stick clam excavator or the like

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059886A (en) * 1976-02-09 1977-11-29 International Harvester Company Hydraulic actuated grab bucket
US4333676A (en) * 1978-09-02 1982-06-08 Firma Thumm Olhydraulische Antriebe GmbH Rotational mechanism for an excavator grab bucket
US5375348A (en) * 1992-04-23 1994-12-27 Japanic Corporation Deep excavator
US5443294A (en) * 1993-09-22 1995-08-22 Hawco Manufacturing Co. Single-line clamshell bucket
US6643957B2 (en) * 2000-08-04 2003-11-11 Reel Sa Unit for the collection, cleaning and calibration of electrolysis pots used for aluminium production
US20110266279A1 (en) * 2009-01-08 2011-11-03 E.C.L. Fastening device for a collector of solid remains swiveling at the end of a mobile arm in particular fastening device for articulated buckets of a crust shovel
US8756837B2 (en) * 2009-01-08 2014-06-24 E.C.L. Fastening device for a collector of solid remains swiveling at the end of a mobile arm in particular fastening device for articulated buckets of a crust shovel

Also Published As

Publication number Publication date
FR2122294B1 (de) 1975-06-06
DE2201871A1 (de) 1972-08-10
GB1335501A (en) 1973-10-31
DE2201871C3 (de) 1981-04-09
BR7200244D0 (pt) 1973-05-03
FR2122294A1 (de) 1972-09-01
BE778105A (fr) 1972-07-17
IT951089B (it) 1973-06-30
ES398975A1 (es) 1974-10-16
DE2201871B2 (de) 1980-07-17
JPS55314B1 (de) 1980-01-07

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