US3740875A - Dragline bucket with skid link - Google Patents

Dragline bucket with skid link Download PDF

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Publication number
US3740875A
US3740875A US00141739A US3740875DA US3740875A US 3740875 A US3740875 A US 3740875A US 00141739 A US00141739 A US 00141739A US 3740875D A US3740875D A US 3740875DA US 3740875 A US3740875 A US 3740875A
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US
United States
Prior art keywords
bucket
coupling members
coupling
coupling member
members
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
US00141739A
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English (en)
Inventor
T Voyce
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.)
BOFORS CO Ltd
BOFORS CO LTD GB
Original Assignee
BOFORS CO Ltd
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 BOFORS CO Ltd filed Critical BOFORS CO Ltd
Application granted granted Critical
Publication of US3740875A publication Critical patent/US3740875A/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
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/58—Component parts
    • E02F3/60—Buckets, scrapers, or other digging elements

Definitions

  • each of May 15, 1970 Sweden 23798/70 the coupling members is movable at substantially right angles to and substantially longitudinally of the bottom [52] U.S. of the bucket Moreover, each of the coupling men [51] Int. Cl E02f 3/46 hers is cqnnected at one end to a cable or chain for Of Search l7, the bucket along the ground
  • Each of the cou- 135: 214/523: 254/147; 172/265. 2 pling members has at one end detachably coupled thereto a second coupling member, the other end of [56] References C te each of the second pair of coupling members being de- UNITED STATES PATENTS tachably connectible toa side wall of the bucket.
  • the present invention relates to a dragline bucket.
  • such buckets are used together with a vehicle provided with a crane, and with the aid of the crane the bucket is placed at a distance from the vehicle and then with the filling end of the bucket facing the vehicle.
  • the bucket At the lower part of the filling end, i.e., at the end of the bottom, the bucket has teeth, in order to act upon the earth or other accumulation of material in the form of sand, clay, stone, coke etc.
  • the bucket has a cable arrangement which is connected to the vehicle, and further a second cable arrangement which is connected with the upper end of the crane.
  • the purpose of the present invention is to solve the last-mentioned problem, and this is achieved in that the coupling member between the cable arrangement and the filling end of the bucket is provided with runners or skids under said coupling member.
  • the coupling member at the filling end of the bucket is thereby protected and, furthermore, the bucket is raised at the filling end to a certain degree, since said skids or runners can slide on the ground.
  • said skids or runners can be bent up at the end facing the vehicle, as in the case of ordinary skids or runners, thereby facilitating their sliding on the ground. Further, said skids or runners can have such a length that they cover and protect more or less all of the coupling parts that can be subjected to destruction from the ground.
  • Said skids or runners can moreover have a width that exceeds the width of all the parts which the skids or runners are to protect.
  • FIG. 1 shows a vehicle with crane provided with a dragline bucket
  • FIG. 2 shows a coupling arrangement between said dragline bucket and a cable arrangement from the vehicle
  • FIG. 3 shows a part of the dragline bucket in operation
  • FIG. 4 shows how a coupling member in the coupling arrangement functions when the ground surface is uneven.
  • l is a ground surface.
  • a mobile vehicle 2 which in the present case is provided with crawler tracks. It should be obvious, however, that ordinary wheels can also be used.
  • the vehicle is also provided with a crane jib 3 which can be raised and lowered.
  • Two cables 4 and 5 run from the vehicle, and are directly connected to a dragline bucket 6. The two cables can be reeled out and in inside the actual vehicle 2.
  • the cable 4 runs via the tip of the jib 3 to the dragline bucket, and the cable 5 runs from the vehicle at the lower end of the jib.
  • the bucket is provided with two fastening lugs 7 and 8.
  • the other ends of the chains are connected with a connecting member 15 which, in turn, is fastened to the cable 4.
  • the dragline bucket has a shackle 16, to which one end of a cable 17 is fastened.
  • the cable runs over a pulley arrangement, which is arranged inside the connecting member 15.
  • the other end of the cable 17 is connected at the junction point between the cable end 5 and the chain 12A.
  • the fastening lug 8 is formed in its free end, i.e., the end facing the vehicle, as a fork-like part 18, in which the legs of the fork have such a thickness that a transversal hole can be made through the legs and a bolt coupling can be placed in said hole. Between the legs of said fork-like part, one part 20 of the coupling member 10 is placed.
  • the part 20 has a fork-like appearance, similar to that of the fork-like part 18, and is also made with a transversal hole through the legs.
  • the bolt coupling thus goes through both of the fork-like parts 18 and 20, which involves that the coupling'member 10 can be turned round the axle of the bolt coupling 19.
  • the other end of the coupling member 10 Le. the one to the left in the figure, is made in the form of a fork with two legs with holes 21, the legs then being turned 90 in relation to the legs of the fork-like part 20.
  • a shaft-like part 23 runs to the coupling member 9, which is provided with a transversal hole.
  • a bolt coupling 22 goes through the lastmentioned hole and through the fork legs 21.
  • Two fork legs 24 extend from the left-hand end of the shaft-like part 23. Said legs are provided with a hole for a bolt coupling 25.
  • the fastening lug 7 is provided with two coupling members corresponding to the coupling members 9 and 10.
  • the coupling members that correspond to the coupling member 9 will be called the first pair of coupling members
  • the coupling members that correspond to the coupling members 10 will be called the second pair of coupling members.
  • the bottom of the coupling member 9 is provided with a skid, runner or the like 26, which extends along the entire length of the coupling member 9, and the left-hand end of the skid or runner 26 can moreover be bent upwards.
  • the skid or runner 26 has a width preferably exceeding the width of the coupling member 9.
  • the skid or runner can be extended towards the right, so that it also protects the whole of the coupling member 10 from below. From the foregoing, it will thus be noted that the coupling member 10 more or less moves in a horizontal plane, while the coupling member 9 moves in a vertical plane.
  • FIG. 3 it is shown how the dragline bucket at its filling end, and then at the front edge of the bottom is provided with excavator teeth 27. It will also be noted from said figure that the dragline bucket has an edge 28, on the bottom of which there is a runner 29, which is turned up at the left.
  • FIG. 4 shows the advantage of having a runner, particularly when the ground is uneven. In FIG. 4 such a point of unevenness has been given the reference designation 30. The way in which the dragline bucket is emptied will not be described, as this, in itself, is previously known.
  • a dragline bucket for collecting and emptying materials such as earth, sand, gravel, stone, and the like from a soft or firm base, such as a ground surface or a sand pit, in which the end of the bottom of the bucket at the mouth end thereof is provided with excavating members and in which the bucket at its mouth end adjacent to two opposite side walls thereof is provided with a coupling member associated with each of the side walls, each of said coupling members being movable in planes substantially at right angles to and substantially longitudinally of the bottom of the bucket, each of said coupling members having one end connectable with a pulling device, arranged to effect a dragging movement of the bucket, said coupling members each having its other end detachably connectable to one end of an associated coupling member of a second pair of coupling members, the other end of each coupling member of the second pair of coupling members being detachably connectable with a side wall of the bucket and the coupling members of the second pair being movable in planes transverse to the mouth end of the bucket, each of the
  • each runner at the end thereof removed from the mouth end of the bucket is bent upwards.
  • each runner has a length such that the underside of the respective coupling member of the second pair of coupling members is at least partly covered by the runner.
  • each runner has a width at least equal to the width of at least one of the two associated coupling members.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Load-Engaging Elements For Cranes (AREA)
US00141739A 1970-05-15 1971-05-10 Dragline bucket with skid link Expired - Lifetime US3740875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2379870 1970-05-15

Publications (1)

Publication Number Publication Date
US3740875A true US3740875A (en) 1973-06-26

Family

ID=10201490

Family Applications (1)

Application Number Title Priority Date Filing Date
US00141739A Expired - Lifetime US3740875A (en) 1970-05-15 1971-05-10 Dragline bucket with skid link

Country Status (5)

Country Link
US (1) US3740875A (enrdf_load_stackoverflow)
AT (1) AT302205B (enrdf_load_stackoverflow)
DE (1) DE2123366A1 (enrdf_load_stackoverflow)
FR (1) FR2099094A5 (enrdf_load_stackoverflow)
GB (1) GB1239190A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR2099094A5 (enrdf_load_stackoverflow) 1972-03-10
GB1239190A (enrdf_load_stackoverflow) 1971-07-14
DE2123366A1 (de) 1972-02-10
AT302205B (de) 1972-10-10

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