EP3097237B1 - Work tool with exchange system - Google Patents

Work tool with exchange system Download PDF

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Publication number
EP3097237B1
EP3097237B1 EP14811814.4A EP14811814A EP3097237B1 EP 3097237 B1 EP3097237 B1 EP 3097237B1 EP 14811814 A EP14811814 A EP 14811814A EP 3097237 B1 EP3097237 B1 EP 3097237B1
Authority
EP
European Patent Office
Prior art keywords
pins
arm
work tool
grapple
tool assembly
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.)
Active
Application number
EP14811814.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3097237A1 (en
Inventor
Frank VAN KONINGSBRUGGE
Rob LOUWERS
Joeri FAASEN
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 Work Tools BV
Original Assignee
Caterpillar Work Tools BV
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 Work Tools BV filed Critical Caterpillar Work Tools BV
Publication of EP3097237A1 publication Critical patent/EP3097237A1/en
Application granted granted Critical
Publication of EP3097237B1 publication Critical patent/EP3097237B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • 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
    • B66C3/02—Bucket grabs
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3636—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
    • 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
    • E02F3/28—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

  • the present disclosure relates to an implement of a machine, and more particularly to an exchange system for the implement.
  • grapples Due to various types of operational and terrain conditions, machines are required to use different types and sizes of implements, such as grapples.
  • such grapples include a number of moveable components, such as shells, tines, jaws etc.
  • These grapples and the corresponding moveable components may need to be changed every time for different types of operations.
  • these grapples are attached to an implement system of the machine by using fastening elements.
  • the fastening elements are fastened and unfastened manually, which is a cumbersome and a time consuming task.
  • grapples may be very heavy and fastening and unfastening of these grapples may be an unsafe task.
  • the moveable components may tend to fall apart from each other while assembling and/or exchanging the grapples, which may not be desired as it can be hazardous to the operator of the machine and the surroundings of the machine.
  • US-A-5024397 discloses a clamshell attachment for a crescent shaped, concave-convex log grapple, to convert the log grapple to a scoop or bucket type device for handling bulk material such as wood chips. It consists of a pair of concave-convex scoops pivoted together at their upper ends. A holding pin connects each grapple half to a respective scoop, with the concave portion or side of each grapple half positioned over and adjacent the convex side of a respective scoop.
  • the only modification required of the log grapple is the addition of apertured tabs to its convex sides, the tabs receiving the holding pins.
  • a work tool assembly is provided according to claim 1.
  • a work machine is provided according to claim 11.
  • FIG. 1 illustrates an exemplary machine 100, such as a hydraulic excavator.
  • the machine 100 may be a backhoe loader, a digger, a knuckle boom loader, a harvester, etc.
  • the machine 100 may include an implement system 102 configured to move or position an implement 104.
  • the implement 104 may be attached to a stick member 106 of the implement system 102. As shown in FIG.
  • the machine 100 may further include a frame 108, a drive system 110 for propelling the machine 100, a power source 112 that provides power to the implement 104 and the drive system 110, and an operator station 114 to control the implement 104 and the drive systems 110.
  • the operator station 114 includes one or more operator input devices configured to receive and/or transmit various inputs indicative of an operator desired movement of the implement 104 and/or the machine 100.
  • the implement 104 may be embodied as a clamshell grapple assembly, hereinafter referred to as the grapple assembly 104.
  • the implement 104 may be two hydraulic cylinder operated crusher, shear, or any other demolition tool. It may be understood by a person having ordinary skill in the art, the machine 100 may include additional implements mounted on the machine 100 for various other purposes.
  • the grapple assembly 104 may include a number of moveable components, such as a first moveable component 116 and a second moveable component 118 pivotally attached to a frame 120 of the grapple assembly 104.
  • the first and the second moveable components 116, 118 of the grapple assembly 104 may be grapple shells, hereinafter interchangeably referred to as grapple shells 116, 118.
  • the grapple assembly 104 may be operated by pivoting the grapple shells 116, 118 using a first hydraulic cylinder 122 and a second hydraulic cylinder 124, respectively.
  • an exchange system 126 for the grapple assembly 104 is provided.
  • the exchange system 126 is configured to facilitate quick changing of the grapple shells 116, 118 as per operation specific requirements. For example, different sizes of the grapple shells 116, 118 may be chosen for different sort of operations and operating conditions.
  • the exchange system 126 includes the frame 120, a first arm 128 and a second arm 130, and the first and the second hydraulic cylinders 122, 124.
  • the first and the second hydraulic cylinders 122, 124 are disposed between the frame 120 and the respective first and the second arms 128, 130. Further, the first and the second arms 128, 130 are configured to pivotally couple the frame 120 to the grapple assembly 104.
  • FIG. 2 illustrates a perspective view of the first arm 128 and the second arms 130 of the exchange system 126.
  • Each of the first arm 128 and the second arm 130 has an inner end 202, 204 and an outer end 206, 208 respectively.
  • the inner ends 202, 204 include a first opening 210 and a second opening 212 configured to receive a first inner pin 214 and a second inner pin 216 respectively.
  • the first and the second inner pins 214, 216 are configured to pivotally couple the first arm 128 and the second arm 130 at the inner ends 202, 204 respectively.
  • the first and the second inner pins 214, 216 may be identical elongated fastener pins.
  • Each of the first and the second inner pins 214, 216 include a protruded portion 218, 220 disposed on the opposite sides of the first and the second inner pins 214, 216 respectively.
  • each of the protruded portions 218, 220 include a pair of chord cut out portions 222, 224 respectively. As shown in FIG. 2 , each chord cut out portion of the pair of chord cut out portions 222, 224 may be disposed on opposite sides of the protruded portions 218, 220.
  • each of the first arm 128 and the second arm 130 includes a third opening 226 and a fourth opening 228 disposed at the outer ends 206, 208 respectively.
  • the third opening 226 and the fourth opening 228 are configured to receive a first outer pin 230 and a second outer pin 232 respectively.
  • the first and the second outer pins 230, 232 may be identical elongated fastener pins.
  • each of the first and the second outer pins 230, 232 include a second protruded portion 234, 236 having a second pair of chord cut out portions 238, 240.
  • the second protruded portions 234, 236 are disposed on the opposite sides of the first and the second outer pins 230, 232 respectively.
  • the first and the second outer pins 230, 232 may be elongated fastener pins without any protruded portion.
  • each of the first and the second arms 128, 130 may include a disc 242, 244 disposed at the outer ends 206, 208 respectively.
  • each of the discs 242, 244 may include a second opening 246 (only one shown) configured to receive the first and the second outer pins 230, 232 respectively. It may be contemplated that the second opening 246 is aligned adjacent to the third and the fourth openings 226, 228 respectively.
  • the shape of the second opening 246 may be similar to the outer shape of the second protruded portions 234, 236 having the second pair of chord cut out portions 238, 240, such that the second protruded portions 234, 236 align to engage within the opening 246.
  • each of the first arm 128 and the second arm 130 may include a first upper pin 248 and a second upper pin 250 respectively, and disposed between the inner ends 202, 204 and an outer ends 206, 208.
  • the first and the second upper pins 248, 250 are configured to pivotally support the first hydraulic cylinder 122 and the second hydraulic cylinder 124 respectively.
  • the first and the second outer pins 230, 232 may be configured to pivotally support the first and the second hydraulic cylinders 122, 124 respectively.
  • the first and the second hydraulic cylinders 122, 124 are configured to pivot the first arm 128 and the second arm 130 about the inner ends 202, 204 respectively.
  • FIG. 3 illustrates a perspective view of the first and the second grapple shells 116, 118 according to an embodiment of the present disclosure.
  • the first and the second grapple shells 116, 118 include first pair of inner openings 302 and a second pair of inner openings 304 respectively.
  • the first and the second pair of inner openings 302, 304 are configured to receive the first and the second inner pins 214, 216 respectively.
  • first and the second inner pins 214, 216 are received at the protruded portions 218, 220 into the first and the second pair of inner openings 302, 304, such that upon rotation the chord cutout portions 222, 224 lock the first and the second inner pins 214, 216 within the first and the second pair of inner openings 302, 304.
  • the chord cutout portions 222, 224 are in vertical position.
  • the chord cutout portions 222, 224 turn into substantially horizontal orientation, thereby locking the pins 214, 216 within the pair of inner openings 302, 304.
  • the first and the second inner pins 214, 216 are rotated automatically by the hydraulic cylinders 122, 124 respectively.
  • first and the second grapple shells 116, 118 further include a first pair of outer openings 306 and a second pair of outer openings 308.
  • the first and the second pair of outer openings 306, 308 are configured to receive the first and the second outer pins 230, 232 respectively.
  • the second protruded portions 234, 236, with the chord cutout portions 238 and 240 lock the outer pins 230, 232 within the first and the second pair of outer openings 306, 308 in a similar manner as explained previously with reference to the first and the second inner pins 214, 216.
  • the first and the second outer pins 230, 232 are rotated manually to lock them within the first and the second pair of outer openings 306, 308 respectively.
  • each of the first and the second pair of outer openings 306, 308 may include a first end and a second end (not shown). The second end rotates when the outer pins 230, 232 engages within the first and the second pair of outer openings 306, 308 and flips over the outer pins 230, 232 to lock the outer pins 230, 232 within the second pair of outer openings 306, 308 respectively.
  • first and the second outer pins 230, 232 are fastened within the first and the second pair of outer openings 306, 308 by a fastener 252, such as a bolt (as shown in FIG. 2 ).
  • the disc 242 may include a pair of semicircular notches 247, 249 disposed 90 degrees apart from each other on an outer diameter of the disc 242.
  • the fastener 252 is engaged with either one of the notches 247, 249 to selectively lock and unlock the outer pins 230, 232 within the first and second pair of outer openings 306, 308.
  • the disc 242 is fastened by securing the fastener 252 to the first notch 247.
  • the disc 242 along with the outer pins 230, 232 are rotated, such that the disc 242 is fastened by securing the fastener 252 to the second notch 249.
  • the outer pins 230, 232 are rotated to be in vertical position, thereby unlocking the outer pins 230, 232 from the first and the second pair of outer openings 306, 308.
  • the outer pins 230, 232 are removed from the first and the second pair of outer openings 306, 308 without detaching from the first and the second arms 128, 130 respectively.
  • FIGS. 4 and 5 illustrate a perspective view of the first and the second grapple shells 116, 118 having a positioning system 400.
  • the positioning system 400 is configured to position the first and the second grapple shells 116, 118 during the exchange process.
  • the positioning system 400 is configured to secure the first and the second grapple shells 116, 118 against an axial movement during the grapple exchange process.
  • the positioning system 400 may include a first element 402 attached to the first grapple shell 116 and a second element 404 attached to the second grapple shell 118.
  • the first element 402 is configured to engage with the second element 404 to secure the first and the second grapple shells 116, 118.
  • the first and the second elements 402, 404 may engage with each other thereby restrict a further axial and/or transverse movement of the grapple shells 116, 118.
  • the first element 402 and the second element 404 may disengage to thereby allow the movement of the grapple shells 116, 118. It may be contemplated that only one positioning system 400 with the first and the second elements 402, 402 is shown in FIGS. 4 and 5 , however, the positioning system 400 may also be positioned on the back side (not shown) of the grapple assembly 104.
  • the first element 402 includes a protruded portion 406.
  • the second element 404 includes an opening 408 configured to receive the protruded portion 406 of the first element 402 to secure the first and the second grapple shell 116, 118 during the exchange process (as shown in FIG. 5 ).
  • the protruded portion 406 is circular in shape and the opening 408 is a partial arcuate opening.
  • the first element 402 and the second element 404 may include flanged portions that may engage with each other.
  • the flanged portions when engaged with each other may restrict the axial movement of the grapple shells 116, 118 thereby securing the two during the exchange process and during transportation or storage of the grapple shells.
  • the flanged portions of the first and the second elements 402, 402 may snap fit into each other, thereby securing the grapple shells 116, 118 during the exchange process and during transportation or storage of the grapple shells.
  • the present disclosure relates to the exchange system 126 and the positioning system 400 for the grapple assembly 104.
  • the exchange system 126 facilitates quick exchanging of the grapple assembly 104, and/or the shells 116, 118 involving minimum human intervention. Therefore, the exchange system 126 provides a convenient, safe, cost efficient, and error free system for changing the grapple assembly 104 and/or the shells 116, 118 as per the requirements.
  • the positioning system 400 facilitates securing of the grapple shells 116, 118 against the axial and/or transverse movement during the exchange process. For example as the grapple shells 116, 118 are heavy they tend to fall in the axial direction by virtue of their design and weight. The positioning system 400 therefore, secures the grapple shells 116, 118 thereby preventing falling of the grapple shells 116, 118.
  • FIGS 6 to 8 illustrate perspective views of the grapple assembly 104 having the exchange system 126 according to an embodiment of the present disclosure.
  • the frame 120 along with the first and the second arms 128, 130 are placed above the grapple shells 116, 118 respectively.
  • the grapple shells 116, 118 may be supported by fixed stand 600 and the first element 402 and the second element 404 are engaged to avoid any axial movement between the grapple shells 116, 118.
  • the first and the second inner pins 214, 216 are aligned above the first and the second pairs of inner openings 302, 304.
  • the first and the second hydraulic cylinders 122, 124 are pivotally supported on the first and the second upper pins 248, 250 respectively.
  • the first and the second outer pins 230, 232 are received within the third and the fourth openings 226, 228 respectively.
  • the frame 120 along with the first and the second arms 128, 130 is lowered towards the grapple shells 116, 118.
  • the first and the second inner pins 214, 216 are received within the first and the second pair of inner openings 302, 304 respectively.
  • the chord cutout portions 222, 224 are aligned vertically with respect to the first and the second pair of inner openings 302, 304 respectively.
  • the frame 120 is coupled to the grapple shells 116, 118.
  • the first and the second hydraulic cylinders 122, 124 extend to position the first and the second outer pins 230, 232 within the first and the second pairs of outer openings 306, 308 respectively.
  • the first and the second inner pins 214, 216 rotate to align the chord cut out portions 222, 224 horizontally with respect to the first and the second pairs of inner openings 302, 304, thereby locking the first and the second inner pins 214, 216 within the first and the second pairs of inner openings 302, 304 respectively.
  • first and the second outer pins 230, 232 also rotate and lock within the first and the second pairs of outer openings 306, 308 in a similar manner as described above with respect to the first and the second inner pins 214, 216.
  • the fasteners 252 may be used to fasten and unfasten the first and the second outer pins 230, 232 within the first and the second pair of outer openings 306, 308.

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)
  • Load-Engaging Elements For Cranes (AREA)
EP14811814.4A 2014-01-22 2014-12-04 Work tool with exchange system Active EP3097237B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1401071.4A GB2522420B (en) 2014-01-22 2014-01-22 Exchange system for implement of machine
PCT/EP2014/076592 WO2015110209A1 (en) 2014-01-22 2014-12-04 Exchange system for implement of machine

Publications (2)

Publication Number Publication Date
EP3097237A1 EP3097237A1 (en) 2016-11-30
EP3097237B1 true EP3097237B1 (en) 2019-11-13

Family

ID=50239308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14811814.4A Active EP3097237B1 (en) 2014-01-22 2014-12-04 Work tool with exchange system

Country Status (4)

Country Link
EP (1) EP3097237B1 (zh)
CN (1) CN105899734B (zh)
GB (1) GB2522420B (zh)
WO (1) WO2015110209A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2544746A (en) 2015-11-24 2017-05-31 Caterpillar Work Tools Bv Apparatus and method for assembling work tool to a machine
GB2544744A (en) 2015-11-24 2017-05-31 Caterpillar Work Tools Bv Apparatus and method for coupling work tool to a machine
DK3333112T3 (da) * 2016-12-09 2020-01-02 Cargotec Patenter Ab Lasthåndteringsværktøj og hydraulisk kran med et sådant lasthåndteringsværktøj
CN110271649B (zh) * 2019-06-26 2021-05-11 中船黄埔文冲船舶有限公司 一种船用克令吊抓斗的固定装置

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Publication number Priority date Publication date Assignee Title
IT949589B (it) * 1972-02-24 1973-06-11 Casagrande B Benna mordente idraulica
JPS5262902A (en) * 1975-11-18 1977-05-24 Caterpillar Mitsubishi Ltd Device for removably mounting work apparatus on earthhmoving vehicle
US4295287A (en) * 1980-04-10 1981-10-20 J. I. Case Company Backhoe bucket quick coupler
DE3425542C2 (de) * 1984-07-11 1986-12-04 Zeppelin-Metallwerke Gmbh, 7990 Friedrichshafen Greifervorrichtung
CH675266A5 (zh) * 1987-12-22 1990-09-14 Zepf Hans Rudolf
US5024397A (en) * 1990-02-14 1991-06-18 International Paper Clamshell attachment for log grapple
DE4122713A1 (de) * 1991-06-19 1992-12-24 Kinshofer Greiftechnik Zweischalengreifer
DE19506427C1 (de) * 1995-02-24 1996-04-25 Riepl Josef Gmbh Zweischalengreifer
DE29601644U1 (de) * 1996-01-31 1997-06-05 Liebherr-Hydraulikbagger GmbH, 88457 Kirchdorf Auswechselbarer Zweischalengreifer
JPH09287163A (ja) * 1996-02-21 1997-11-04 Komatsu Ltd 油圧ショベルの作業機
GB2359062B (en) * 2000-02-11 2002-01-02 Ronald Keith Miller Universal coupler for bucket excavators
DE20007050U1 (de) * 2000-04-17 2001-08-30 Liebherr-Hydraulikbagger GmbH, 88457 Kirchdorf Schnellwechsler für Mehrschalengreifer
GB2473630B (en) * 2009-09-17 2013-08-07 Gary Miller Fully automatic coupler for excavator arm
AT512249B1 (de) * 2011-11-23 2014-04-15 Tbr Casting Technologies Gmbh Mehrschalen-greifer für stückiges lagergut

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN105899734B (zh) 2018-11-06
WO2015110209A1 (en) 2015-07-30
GB201401071D0 (en) 2014-03-05
GB2522420B (en) 2018-09-05
EP3097237A1 (en) 2016-11-30
CN105899734A (zh) 2016-08-24
GB2522420A (en) 2015-07-29

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