US3680232A - Bucket ladder dredger - Google Patents

Bucket ladder dredger Download PDF

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Publication number
US3680232A
US3680232A US36983A US3680232DA US3680232A US 3680232 A US3680232 A US 3680232A US 36983 A US36983 A US 36983A US 3680232D A US3680232D A US 3680232DA US 3680232 A US3680232 A US 3680232A
Authority
US
United States
Prior art keywords
ladder
pontoon
bucket
dredger
track
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
US36983A
Other languages
English (en)
Inventor
Cornelis Van Der Gaag
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.)
IHC Holland NV
Original Assignee
IHC Holland NV
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 IHC Holland NV filed Critical IHC Holland NV
Application granted granted Critical
Publication of US3680232A publication Critical patent/US3680232A/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
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/081—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain mounted on floating substructures

Definitions

  • a bucket dredger comprises a pontoon and a bucket ladder mounted on the pontoon for bodily, vertical May 13, 1969 Netherlands ..07346/69 swinging movement relative to the pontoon
  • the ladder mount comprises vertically swinging arms [52] U.S.Cl. ..37/69,37/86, 37/191 R pivotany interconnected to the pontoon and to the Int. Cl. ladder and jacks for swinging the arms
  • the ladder Field Search 191 carries rollers that roll on an upwardly inclined track on the pontoon, the summit of the track being inter- [56] References Cited mediate its ends so that in an upwardly swung position the ladder will be horizontal.
  • the support arms extend UNITED STATES PATENTS beyond the point of pivotal connection to the ladder and at their free ends are connected by links to a 2,750,687 6/1956 Banister ..37/90 chute which is thus maintained vertical in all positions 640,762 1/1900 Gray ..37/69X ofthe ladder 2,636,288 4/1953 Thomas ..37/69 X g 2,747,307 5/1956 Griffin ..37/90 5 Claims, 1 Drawing Figure l I I v i I '7 1 Nfl i "Illx r12: t 4
  • the invention relates to a bucket ladder dredger which comprises a pontoon and a bucket ladder which, pivoting about a horizontal cross axle near its upper portion, is mounted to a derrick mounted on the pontoon, while it is furthermore provided with means for lowering and raising the lower portion of the bucket ladder.
  • a dredger is generally known.
  • the upper portion of the ladder is pivotally connected to a main derrick rigidly mounted on the pontoon, while the lower portion of the bucket ladder is suspended from a ladder derrick with chains, while the lower portion of said bucket ladder may be vertically adjusted by means of said chains.
  • the main derrick generally supports the drive of the upper wheel of the bucket chain.
  • the derrick comprises a support means pivoting about a horizontal cross axle and connected to the pontoon, means for adjusting the ladder, which means comprise an adjusting device which engages the support means and with which the upper portion of the ladder may be swung in the longitudinal direction of the pontoon, as well as a guide track sloping in a vertical direction from the pontoon for the guide rollers to said ladder, which guide rollers are positioned between the ends of the bucket ladder.
  • Said adjusting means may be designed in any suitable way, though they will generally consist of hydraulic cylinders which will engage the support means from another point of the pontoon.
  • This support means preferably consists of a portal which is transversely mounted on the pontoon, the legs of which portal are pivotally mounted on the pontoon, while the upper portion of said portal is pivotally mounted to the upper portion of the ladder. If with the aid of the adjusting means the support means is swung outwards from the lowest position, the upper portion of the ladder will travel in the longitudinal direction of the pontoon, while that portion of the ladder which rests on the rollers will travel upwards along the guide track together with said rollers. By a proper choice of the dimensions and slope of the guide track, the front or lower portion of the bucket ladder may be urged to travel in a substantially vertical direction, so that the center of gravity of the entire dredger will hardly be displaced at all.
  • the structure is much simpler than the known structure, inasmuch as there are only to be provided one portal, two adjusting cylinders and two guide tracks of a relatively low height.
  • the guide track beyond the upper portion thereof, may slope in a downward direction to end with a portion that is at such a height above the pontoon that the ladder, in the outermost position of the adjusting means, will take up a substantially horizontal position.
  • the ladder will move over the top of the guide track together with the rollers and will subsequently move down again whereby a position will be attained in which the ladder will take up a horizontal position at a relatively low height above the pontoon, so that the lower part may be supported by the pontoon.
  • the upper portion of the bucket ladder of a dredger is generally provided with a discharge chute for the conveyance of the dredged material which has fallen out of the buckets to a further storage or conveying means.
  • the discharge chute may be pivotally mounted on the ladder and held in a vertical position by means of a parallel guide bar which is pivotally connected to the support means, which vertical position is maintained in any position taken up by the ladder.
  • the drawing shows a pontoon l with a bucket ladder 2.
  • Said bucket ladder is supported on a guide track 4, which extends in an upward direction, by rollers 3, while it is furthermore supported through the support means 5 designed as a portal.
  • the support means 5 is pivotally connected on the pontoon at 6 and pivotally mounted to the bucket ladder at 10.
  • On the pontoon is pivotally mounted a hydraulic cylinder 9 at 8, which cylinder engages the portal 5 at 10.
  • a discharge chute 12 is pivotally connected to the upper portion of the ladder at 11 and is furthermore connected at 7 to the upper portion of the portal 5 by the bar 13.
  • the topmost position of the ladder is shown in the drawing with interrupted lines, and this position shows that the bar 13 is mounted and dimensioned in such a way that the chute is maintained in a vertical position.
  • the guide track 4, beyond the uppermost portion thereof, is shown as having a downwardly sloping portion 14 which terminates in a horizontal direction and is provided with a stop 15. If by means of the cylinder 9 the ladder is swung beyond the uppermost position, the rollers 3 will travel over the top of the track 4 and move in a downward'direction along the curve 14, and this causes the entire ladder to be lowered and to take up a horizontal position.
  • a bucket dredger comprising a pontoon, a bucket position.
  • a bucket dredger as claimed in claim 1 said track means being fixedly mounted on said pontoon and occupying the same position both when said ladder is in said upper horizontal position and when said ladder is a ladder and supporting the ladder for bodily vertical 7 lowered dredging position.
  • a bucket dredger as claimed in claim 1 said power means acting between the pontoon and the point of interconnection of the support means to the ladder, said power means being pivotally interconnected both to the pontoon and to the ladder.
  • a bucket dredger as claimed in claim 1 and a 7 discharge chute pivotally interconnected to the upper end of the ladder, and link means acting between the chute and the dredger for maintaining the chute vertical in all vertically adjusted positions of the ladder,
  • a bucket dredger as claimed in claim 4 said support means having a portion that extends beyond its point of interconnection to the ladder, said link means interconnecting said chute and said portion of the support means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Chain Conveyers (AREA)
  • Shovels (AREA)
US36983A 1969-05-13 1970-05-13 Bucket ladder dredger Expired - Lifetime US3680232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6907346A NL6907346A (xx) 1969-05-13 1969-05-13

Publications (1)

Publication Number Publication Date
US3680232A true US3680232A (en) 1972-08-01

Family

ID=19806941

Family Applications (1)

Application Number Title Priority Date Filing Date
US36983A Expired - Lifetime US3680232A (en) 1969-05-13 1970-05-13 Bucket ladder dredger

Country Status (7)

Country Link
US (1) US3680232A (xx)
JP (1) JPS4824877B1 (xx)
BE (1) BE750350A (xx)
DE (1) DE2024548C3 (xx)
FR (1) FR2047676A5 (xx)
GB (1) GB1270089A (xx)
NL (1) NL6907346A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100083542A1 (en) * 2008-10-07 2010-04-08 Powers James M Remotely operated submerged dredging system
CN112227515A (zh) * 2020-09-30 2021-01-15 陶伟 一种水利工程用垃圾清理设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1005307A5 (nl) * 1991-09-11 1993-06-22 Dredging Int Baggertuig voor het zonder opwoeling van slib en/of andere sedimenten verwijderen van baggerspecie.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL267707A (xx) *
US640762A (en) * 1899-08-22 1900-01-09 James Hammond Gray Bucket dredging-machine.
US2636288A (en) * 1947-01-31 1953-04-28 Thomas William Digging angle adjustment for endless belt excavators
US2747307A (en) * 1951-04-23 1956-05-29 Mark C Griffin Adjustable mechanism for endless conveyor type ditching machine
US2750687A (en) * 1952-09-05 1956-06-19 Barber Greene Co Boom suspension means for a continuous bucket trenching machine
AT220089B (de) * 1958-07-24 1962-03-12 Deggendorfer Werft Eisenbau Einrichtung zum Einstellen der Eimerleiter bei Eimerketten-Schwimmbaggern
CA694589A (en) * 1964-09-22 O. Pester Siegfried Excavator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL267707A (xx) *
CA694589A (en) * 1964-09-22 O. Pester Siegfried Excavator
US640762A (en) * 1899-08-22 1900-01-09 James Hammond Gray Bucket dredging-machine.
US2636288A (en) * 1947-01-31 1953-04-28 Thomas William Digging angle adjustment for endless belt excavators
US2747307A (en) * 1951-04-23 1956-05-29 Mark C Griffin Adjustable mechanism for endless conveyor type ditching machine
US2750687A (en) * 1952-09-05 1956-06-19 Barber Greene Co Boom suspension means for a continuous bucket trenching machine
AT220089B (de) * 1958-07-24 1962-03-12 Deggendorfer Werft Eisenbau Einrichtung zum Einstellen der Eimerleiter bei Eimerketten-Schwimmbaggern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100083542A1 (en) * 2008-10-07 2010-04-08 Powers James M Remotely operated submerged dredging system
CN112227515A (zh) * 2020-09-30 2021-01-15 陶伟 一种水利工程用垃圾清理设备

Also Published As

Publication number Publication date
DE2024548A1 (de) 1970-11-19
BE750350A (nl) 1970-11-13
DE2024548C3 (de) 1978-05-03
FR2047676A5 (xx) 1971-03-12
GB1270089A (en) 1972-04-12
NL6907346A (xx) 1970-11-17
JPS4824877B1 (xx) 1973-07-24
DE2024548B2 (de) 1977-09-01

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