US3202306A - Grab bucket - Google Patents

Grab bucket Download PDF

Info

Publication number
US3202306A
US3202306A US298850A US29885063A US3202306A US 3202306 A US3202306 A US 3202306A US 298850 A US298850 A US 298850A US 29885063 A US29885063 A US 29885063A US 3202306 A US3202306 A US 3202306A
Authority
US
United States
Prior art keywords
rod
movable assembly
frame structure
shells
piston
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
US298850A
Other languages
English (en)
Inventor
Bienaime Jacques
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.)
YUMBO
Original Assignee
YUMBO
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 YUMBO filed Critical YUMBO
Application granted granted Critical
Publication of US3202306A publication Critical patent/US3202306A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E02F3/413—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
    • 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

Definitions

  • This invention relates in general to grab buckets or clamshells and has specific reference to a grab bucket of the type comprising a pair of pivotally mounted opposed shells operated by a fiuid-actuated motor comprising a fixed body acting as a piston and supporting said shells, and a movable assembly connected to said shells.
  • Grab buckets of this general type are a standard equipment in handling or loading machines, hoisting apparatus, cranes, excavators, etc.
  • these grab buckets are objected to on account of their rotary mounting in relation to the fixed element of the operating motor. In fact these grabs are liable, during the shell operation, to rotate unduly and therefore to interfere with the loading and unloading operations. 7
  • the grab bucket can be secured on the piston rod instead of on an extension of this piston which extends through the movable assembly, whereby the motorconstruction is greatly simplified.
  • the hydraulic pressure is exerted on the entire cross-sectional' area of the piston, thus increasing the efliciency of the motor.
  • the aforesaid frame is rotatably mounted on the piston rod and has its axis of rotation coincident with the piston rod axis.
  • the assembly of this invention permits the desired angular setting of the grab bucket about its vertical axis while preventing any untimely rotational movement thereabout during the loading and unloading operations.
  • the movable assembly is provided with guide means 'co-operating with said frame.
  • These guide means are designed with a view to improve the resistance of said movable assembly to the stress transmitted thereto by said shells.
  • This invention is also concerned, by way of novel industrial products with the earth-moving machines, vehicles and means, as well as handling and hoisting machines, whenever they are equipped with grab buckets of the aforesaid type.
  • FIGURE 1 is a side elevational view of the device of this invention
  • FIGURE 2 is a side elevational view of the same device with parts broken away;
  • FIGURE 3 illustrates on a larger scale means for locking said frame against rotation in relation tothe piston rod.
  • the device comprises essentially a frame structure'l consisting of two vertical parallel uprights 2a, 2b interconnected at their upper ends by a cross member or like element 3.
  • This frame supports at its lower end the shells 4a, 4b pivoted on pins 5a, 5b.
  • the device also comprises a fluid-actuated motor 6 consisting of a movable assembly 7 and a fixed piston 8 having its rod 9 secured directly on a strap or like member 10 rigid with the boom or like element 11 of the machine.
  • a fluid-actuated motor 6 consisting of a movable assembly 7 and a fixed piston 8 having its rod 9 secured directly on a strap or like member 10 rigid with the boom or like element 11 of the machine.
  • Two ducts 12, 13 are provided for supplying hydraulic fluid under pressure to said movable assembly, these ducts opening respectively on the front face of piston 8 and in the vicinity of its rear face in order to provide a double-acting motor.
  • the movable assembly 7 is connected to the clamshells through links 14a, 14b articulated respectively at Ma, 14"42, and 1412, 14"b, and provided with guide rollers 15a, 1512 (which are four in number in the example illustrated) rolling on ribs 16a, 16b formed along the frame 1.
  • the cross member 3 of frame 1, as shown in FIG. 3, comprises a lowerannular member 3a having a relatively large internal diameter, said member 3a being secured, for example by soldering, to the upper extremities of up rights 2a, 2b and and upper annular member 312 having an internal diameter slightly larger than the external diameter of rod 9, said member 3b being secured, for example by soldering, to memberSa is fitted between two friction discs 17a, 17b, for example of bronze or any other suitable alloy, constituting locking means preventing, as will be explained presently, the rotation of the frame when the hydraulic circuit is under pressure.
  • the disc 17a bears against a flange or like annular projection 18 of the rod.
  • the two friction discs 17a, 17b and cross member 3 are adapted to be adjustably clamped together by means of a tightening nut 19 screwed on rod 9 and provided with a lock member 20. This member bears against the disc 1712 by means of a lock washer 21 slipped on the piston rod.
  • a tightening nut 19 screwed on rod 9 and provided with a lock member 20.
  • This member bears against the disc 1712 by means of a lock washer 21 slipped on the piston rod.
  • the movable assembly '7 is slidably moved upwards or downwards on the frame 1 and through the links 14a, 14b causes the shells 4a and 4b to pivot about their relevant pins 5a, 5b.
  • this mounting constitutes a self-locking system whereby the bucket or clamshell can be set in the desired direction as a function of the desired operation or type of work, and to maintain this angular setting throughout the .bucket operation in spite of rotational efforts applied to the bucket as a consequence either of its inherent inertia or of the resistance exerted by the material being handled against the shells.
  • a grab bucket comprising a fluid motor structure having a substantially vertical fixed rod-piston means and a cylinder shaped sliding movable assembly
  • said rodpiston means comprising a piston having a lower face and an upper face and a rod protruding upwardly from said upper face, means at the upper end of said rod for suspending the latter, said rod-piston means also including fluid supply duct means opening on said lower face and in the vicinity of said upper face respectively
  • said cylinder shaped sliding movable assembly having an upper end provided with an axial opening for the passage of said rod and a closed lower end, a frame structure rotatably mounted on said rod in the vicinity of the upper end thereof, the axis of rotation of said frame structure being coincident with the axis of the rod
  • said frame structure and said sliding movable assembly both including guide means adapted to cooperate with each other during the motion of said sliding movable assembly, shells articulated on said frame structure, and link means pivotally connected with said sliding movable assembly and with said shells whereby
  • a grab bucket .as claimed in claim 1 wherein said guide means comprise slideways formed along said frame structure and rollers mounted on said sliding movable assembly.
  • a grab bucket as claimed in claim 3 including a cross member for said frame structure adapted to be slipped on said rod .and wherein said rod includes an annular projection located in the vicinity of its end, said .annular projection forming an abutment for said cross member.
  • a grab bucket for an excavator including a boom and a strap secured to said boom, said grab bucket comprising a fiui-d motor structure having a fixed rod-piston means and a cylinder-shaped sliding movable assembly, said rod-piston means having a piston having a front face and a rear face and a rod protruding from said rear face, said rod having its end pivoted on said strap, said rodpiston means also including fluid supply duct means opening on said front face and in the vicinity of said rear face respectively, a frame structure rotatably mounted on said rod, its axis of rotation being coincident with the axis of the rod, said frame structure and said sliding movable assembly both including guide means adapted to cooperate with each other during the motion of said sliding movable assembly, shells articulated on said frame structure, link means pivotally connected with said sliding movable assembly and with said shells whereby the motion of said sliding movable assembly causes the opening and closing of said shells, said frame structure comprising vertical parallel uprights, and

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)
  • Earth Drilling (AREA)
US298850A 1962-08-28 1963-07-31 Grab bucket Expired - Lifetime US3202306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR908020A FR1339635A (fr) 1962-08-28 1962-08-28 Benne preneuse

Publications (1)

Publication Number Publication Date
US3202306A true US3202306A (en) 1965-08-24

Family

ID=8785880

Family Applications (1)

Application Number Title Priority Date Filing Date
US298850A Expired - Lifetime US3202306A (en) 1962-08-28 1963-07-31 Grab bucket

Country Status (8)

Country Link
US (1) US3202306A (en:Method)
BE (1) BE635716A (en:Method)
DE (1) DE1234369B (en:Method)
ES (1) ES290397A1 (en:Method)
FI (1) FI42190B (en:Method)
FR (1) FR1339635A (en:Method)
GB (1) GB996785A (en:Method)
OA (1) OA00874A (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451150A (en) * 1965-03-01 1969-06-24 Auxitra Sa Grab-bucket

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2418307A1 (fr) * 1978-02-24 1979-09-21 Poclain Hydraulics Sa Dispositif de montage a rotation d'un organe d'outil a fluide sous pression tel qu'une benne preneuse
FR2411275A1 (fr) 1977-12-06 1979-07-06 Poclain Sa Dispositif de montage a rotation d'un organe pivotant d'outil a fluide sous pression, tel qu'une benne preneuse

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1236418A (en) * 1914-01-31 1917-08-14 John Fogarty Co Inc Excavating-machine.
US2689661A (en) * 1951-10-25 1954-09-21 Daniel F Przybylski Dipper stick and dipper operating means
US2702137A (en) * 1950-09-12 1955-02-15 Loran G Ives Tractor attached excavator
US2889643A (en) * 1955-10-13 1959-06-09 Sarl So Called Ateliers De Poc Hydraulically-operated grab bucket
US3055521A (en) * 1959-02-17 1962-09-25 Al Mfg Company Du Power actuated grapple fork loader
US3080988A (en) * 1960-05-09 1963-03-12 Garbage Service Company Inc Grapple device for material handling apparatus
US3109545A (en) * 1959-12-15 1963-11-05 Gen Mills Inc Telescopic material handling support

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR409830A (fr) * 1909-11-30 1910-05-02 Albert Morillon Benne preneuse automatique
DE1088682B (de) * 1958-02-17 1960-09-08 Kaspar Klaus Mehrschalengreifer
FR79892E (fr) * 1961-06-01 1963-02-08 Poclain Atel Benne-preneuse à commande hydraulique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1236418A (en) * 1914-01-31 1917-08-14 John Fogarty Co Inc Excavating-machine.
US2702137A (en) * 1950-09-12 1955-02-15 Loran G Ives Tractor attached excavator
US2689661A (en) * 1951-10-25 1954-09-21 Daniel F Przybylski Dipper stick and dipper operating means
US2889643A (en) * 1955-10-13 1959-06-09 Sarl So Called Ateliers De Poc Hydraulically-operated grab bucket
US3055521A (en) * 1959-02-17 1962-09-25 Al Mfg Company Du Power actuated grapple fork loader
US3109545A (en) * 1959-12-15 1963-11-05 Gen Mills Inc Telescopic material handling support
US3080988A (en) * 1960-05-09 1963-03-12 Garbage Service Company Inc Grapple device for material handling apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3451150A (en) * 1965-03-01 1969-06-24 Auxitra Sa Grab-bucket

Also Published As

Publication number Publication date
GB996785A (en) 1965-06-30
FI42190B (en:Method) 1970-02-02
FR1339635A (fr) 1963-10-11
DE1234369B (de) 1967-02-16
BE635716A (en:Method)
ES290397A1 (es) 1964-03-16
OA00874A (fr) 1968-03-22

Similar Documents

Publication Publication Date Title
US6058633A (en) Quick coupling device and method utilizing an over-center spring
US4519739A (en) Backhoe clamping device
US2831589A (en) Articulated boom for mobile crane
US3862697A (en) Front loading hydraulic excavator
GB2168320A (en) Earth moving machine
US3165348A (en) Handling device for cylindrical or like objects
US4103791A (en) Shovel attachment means for hydraulic excavator
US3149737A (en) Hydraulic shovels
US3202306A (en) Grab bucket
US2889643A (en) Hydraulically-operated grab bucket
US5595471A (en) Linkage arrangement
US4013174A (en) Swing drive with automatic shut-down control
US3283928A (en) Lateral offset mounting for power shovel dipper arm
US4436476A (en) Rod device for use as an arm of an excavator
US3251490A (en) Hydraulic shovel
US3140000A (en) Backhoe
US5533284A (en) Earth-moving machine with revolving tower and adjustable counterweight
US3259259A (en) Easy control loader
US3493135A (en) Braked ball and socket support for bucket attachment
US3122246A (en) Hydraulic circuit for tractor mounted loaders
GB1485318A (en) Industrial robot incorporating a programme control system
CA1271793A (en) Snubbing apparatus for grapples and the like
US3842983A (en) Articulated jib for crawler tractors and the like
US3388819A (en) Material handling machine
CN108994658A (zh) 液压式机械手臂及机床装卸件