US3401474A - Excavating wheel arrangement - Google Patents

Excavating wheel arrangement Download PDF

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Publication number
US3401474A
US3401474A US537754A US53775466A US3401474A US 3401474 A US3401474 A US 3401474A US 537754 A US537754 A US 537754A US 53775466 A US53775466 A US 53775466A US 3401474 A US3401474 A US 3401474A
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US
United States
Prior art keywords
bucket
members
wheel
axis
wall
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
US537754A
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English (en)
Inventor
Sova Ladislav
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.)
UNICOVSKE STROJIRNY NARODNI PODNIK
UNICOVSKE STROJIRNY NARODNI
Original Assignee
UNICOVSKE STROJIRNY NARODNI
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 UNICOVSKE STROJIRNY NARODNI filed Critical UNICOVSKE STROJIRNY NARODNI
Application granted granted Critical
Publication of US3401474A publication Critical patent/US3401474A/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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/248—Cleaning the wheels or emptying the digging elements mounted on the wheels, e.g. in combination with spoil removing equipment
    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/241—Digging wheels; Digging elements of wheels; Drives for wheels digging wheels

Definitions

  • This invention relates to rotary excavating machines, and particularly toan excavating wheel equipped with buckets for receiving the excavated material and for discharging the same in'a predetermined cycle.
  • the primary object of the invention is the provision of an excavating wheel and associated devices which may be operated at any desired rotary speed.
  • the invention in its more specific aspects provides an excavating wheel arrangement in which two approximately circular wall members are mounted on a support for rotation about a common axis.
  • the members are axially connected by two interposed pairs of spacer bars.
  • the pairs are circumferentially spaced 180 from each other.
  • One bar of each pair extends between the rim portions of the wall members, and the other bar is near the axis.
  • Two bucket members which at least partly consist of pliable sheet material each have two terminal portions which are fastened to the spacer bars of an associated pair. Because the length of the bucket member is greater than the spacing of the associated spacer bars, the bucket member is normally slack and defines a bucket.
  • the wall members, and thereby the entire wheel assembly, are rotated about their common axis, and means are provided for cyclically tensioning and slackening the bucket members in response to the rotation of the wall members.
  • the tensioning arrangement essentially consists of a tension roll received in each bucket, guides for guiding each roll in a radially extending path, and actuating means which reciprocate the roll in its path when the wheel rotates, the arrangement being such that one roll moves radially outward while the other one moves radially inward.
  • FIG. 1 shows as much of a rotary excavating machine equipped with the wheel arrangement of the invention as is needed for an understanding of the invention, the view being in radial elevational section on the line II in FIG. 2;
  • FIG. 2 shows the most important elements of the apparatus of FIG. 1 in elevational axial section on the line 11-11.
  • arms 20 which are elements of the support structure of an excavating machine, not otherwise shown.
  • An axle ice assembly 11 fixedly connects the free ends of the arms 20 and carries the excavating wheel proper.
  • the latter mainly consists of two discs or side walls 1 which are approximately circular in shape and are coaxially mounted on the axle assembly 11.
  • the side walls are fixedly connected in axially spaced relationship by two-peripherally mounted excavating blades 2 and by two pairs of spacer bars 4, 5.
  • One bar 4 of each pair extends between radially projecting lugs on the rims of the walls 1, and the bar 5 is nearer the wheel axis.
  • a bevel gear rim 21 on one side wall 1 and a bevel gear 22 on a drive shaft 23 connect the wheel to a nonillustrated prime mover on the support structure of the machine.
  • the wheel is driven in a counterclockwise direction, as viewed in FIG. 1.
  • the spacer bar 5 and the blade 2 are angu-larly offset in the direction of wheel rotation relative to the associated bar 4.
  • a pliable bucket sheet 3 is pi-votally attached to each pair of spacer bars 4, 5 by sheet metal hinge plates 12.
  • the length of the bucket sheet is much greater than the spacing of the bars 4, 5 so that the sheet 3 is normally slack and forms a bucket for receiving the material 24 excavated by the blades 2 from a body 25 of material in the usual manner.
  • each roll 6 is rotatably mounted on a shaft 26 which axially projects from both ends of the roll.
  • Each projecting end portion of the shaft 26 rotatably carries a cam follower wheel 7 and a guide wheel 8.
  • the latter is confined in a U-shaped guide [channel 9 fixedly mounted on the inner face of a corresponding side wall 1, the two guide channels 9 on each wall 1 extending radially from the wheel axis in opposite directions.
  • the cam follower wheel 7 travels about the circumference of a cam 10 fixedly mounted on the axle assembly 11 when the wheel rotates about its axis.
  • Two elongated locating plates 13 arranged on either side of the two tension rolls 6 have each three aligned openings.
  • An end portion of a shaft 26 is received in each of the two openings near the ends of each plate, and the axle assembly 11 passes through the central opening 27 which is elongated to permit free radial movement of the plate 13 with the rolls 6 which are coupled by the plates 13 in such a manner that one must move radially outward when the other moves radially inward.
  • the rolls 6 perform one reciprocating movement toward and away from the axle assembly 11.
  • the bucket sheets 3 are tensioned when the associated roll 6 is near the axle, and are slack when the roll is near the rim of the wheel.
  • the cams 10 are positioned in such a manner that the sheet slackens while receiving excavated material from the associated blade 2, and remains slack while lifting the material well above the level of the wheel axis.
  • a conveyor (not shown) may be mounted on the arms 20 to receive the discharged material and to carry it from the excavating zone in a manner known in itself.
  • Anexcavating wheel arrang ment comprising, in
  • each bucket member at least partly consisting of pliable sheet material, each bucket member having two terminal portions respectively fastened to the two spacer bars of an associated pair, the length of the bucket member between said terminal portions thereof being substantially greater than the spacing of the associated spacer bars from each other, whereby said bucket member defines a bucket;
  • tensioning means for cyclically tensioning and slackening each bucket member in response to rotation of said wall members, said tensioning means including (1) a tension roll received in each bucket, (2) guide means for guiding said roll in a radially extending path, and
  • actuating means for reciprocating said roll in said path in response to the rotation of said wall members in such a manner that the roll moves radially outward when the other roll moves radially inward;
  • said guide means include a guide channel on a face of each wall member axially opposite the corresponding face of the other wall member, and two guide wheels on each tension roll respectively engaging said guide channels.
  • said actuating means include a cam arrangement consisting of a cam member and a cam follower member, one of said members being fixedly fastened to said support and the other member being mounted on said tension roll.
  • actuating means further include motion transmitting means connecting said tension rolls for joint movement in said paths thereof, said rolls being spaced from said axis in opposite radial directions.
  • said guide means include a radially elongated guide channel on a face of each wall member axially opposite the corresponding face of the other wall member, and two guide wheels on each tension roll respectively engaging said guide channels.

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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)
  • Earth Drilling (AREA)
  • Dry Development In Electrophotography (AREA)
US537754A 1965-06-16 1966-03-28 Excavating wheel arrangement Expired - Lifetime US3401474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS388365 1965-06-16

Publications (1)

Publication Number Publication Date
US3401474A true US3401474A (en) 1968-09-17

Family

ID=5380198

Family Applications (1)

Application Number Title Priority Date Filing Date
US537754A Expired - Lifetime US3401474A (en) 1965-06-16 1966-03-28 Excavating wheel arrangement

Country Status (3)

Country Link
US (1) US3401474A (enExample)
DE (1) DE1658001A1 (enExample)
GB (1) GB1075255A (enExample)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313051A (en) * 1964-01-06 1967-04-11 Unicovske Strojirny Excavating wheel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313051A (en) * 1964-01-06 1967-04-11 Unicovske Strojirny Excavating wheel

Also Published As

Publication number Publication date
GB1075255A (en) 1967-07-12
DE1658001A1 (enExample) 1971-05-27

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