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EP0202545A1 - Löffelarm, insbesondere für einen Tieflöffel - Google Patents

Löffelarm, insbesondere für einen Tieflöffel Download PDF

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Publication number
EP0202545A1
EP0202545A1 EP86106281A EP86106281A EP0202545A1 EP 0202545 A1 EP0202545 A1 EP 0202545A1 EP 86106281 A EP86106281 A EP 86106281A EP 86106281 A EP86106281 A EP 86106281A EP 0202545 A1 EP0202545 A1 EP 0202545A1
Authority
EP
European Patent Office
Prior art keywords
arm
dipper
wear
bucket
spoon
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.)
Withdrawn
Application number
EP86106281A
Other languages
German (de)
English (en)
French (fr)
Inventor
Gregory Keith Werner
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of EP0202545A1 publication Critical patent/EP0202545A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/707—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic guiding devices for telescopic jibs
    • 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
    • E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/306—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom with telescopic dipper-arm or boom

Definitions

  • the invention relates to a bucket arm, in particular for a backhoe bucket, which is designed as a hollow profile with a rectangular or roughly rectangular cross-section and in its interior accommodates a retractable and extendable dipper arm with an adapted outer profile, which has a top and bottom wall, the ceilings - And the bottom wall are provided on their outer sides with mutually spaced wear bands.
  • Such backhoe buckets are usually used for dredging trenches and the like. They are normally arranged at the rear of a vehicle so as to be pivotable about a vertical axis and have a cantilever arm which is adjustable about this vertical axis and to which in turn a spoon arm is articulated in a vertically pivotable manner.
  • the excavation tool also known as a spoon, engages the free end of this spoon arm, a spoon arm being provided between the excavation tool and the spoon arm in order to increase the variety of possible uses, which can be telescopically inserted into the spoon arm. In this way, the total length of the spoon arm can be increased considerably.
  • the backhoe bucket is constantly pivoted around its joints, and in addition, if there is a retractable and extendable dipper arm, it is constantly retracted and extended. Due to the constant retraction and extension, considerable wear and tear occurs on its surfaces and on the inside of the bucket arm, which sooner or later precludes secure use. It has therefore started to provide rollers, but this has increased the overall weight of the bucket considerably. On the other hand, it has already been proposed in the spoon arm from which the invention is based (US Pat. No. 3,688,930) to provide the spoon arm with wear bands on its top and bottom walls.
  • wear straps need to be as in the Practice has shown to be replaced about every 300 hours of operation, and they also have a considerably greater hardness than the material of the bucket arm, which causes the wear straps to grind or eat into the inside of the bucket arm, which means that even after the wear straps have been replaced, the dipper arm can no longer be safely guided, so that the spoon arm may have to be replaced.
  • the object to be achieved with the invention is seen in designing the arm and arm in such a way that they are exposed to even less wear.
  • This object has been achieved according to the invention in that the insides of the top and bottom walls of the arm, which are located on the top and bottom of the arm, are provided with wear bands which bear against the wear bands on the arm.
  • the wear bands of the spoon arm and those of the dipper arm are constantly in contact with each other during the mutual displacement, so that since they have a much greater hardness than the material of the dipper arm and that of the dipper arm, there is substantially less wear and thus a considerably greater usability of the bucket is given.
  • At least one wear band preferably that of the dipper stick, can expediently be arranged detachably, with a detachable arrangement of all wear bands also being recommended in some cases.
  • the wear bands can rest against one another over their entire length when the dipper arm is retracted. At this point it should of course be pointed out that it is not absolutely necessary for the dipper stick to be inserted into the dipper arm. It is equally possible that the dipper stick moves on the dipper arm, so that in such a case the wear straps can also be attached accordingly.
  • a bucket connected to an indicated vehicle is designated 11, which has a pivoting part 13, which in turn is connected via a pin to the vehicle or an agricultural tractor frame for pivoting movement about a vertical axis.
  • the boom of the bucket is designated 17 and connected to the swivel part 13 by conventional means and provided with an extension arm 19 which rigidly engages the swivel part 13 at one end.
  • a bucket arm 21 is pivotally connected to the other end of the extension arm 19, wherein a vertical pivoting movement can be generated via a hydraulically actuated actuating cylinder 23.
  • the latter in turn is connected at one end to the cantilever arm 19, while its other end, for example on the piston side, engages the bucket arm 21 so that the bucket arm can be adjusted about a horizontal axis.
  • the spoon arm 21 consists of a housing which is formed by first and second, longitudinally extending parts 31 and 33 which essentially have an inverted L-shaped cross section.
  • the parts 31 and 33 extend vertically with their long legs and are connected to one another at their lower ends by a longitudinal part 35 which forms the underside of the spoon arm connected.
  • the short legs of the parts 31 and 33 which are of L-shaped cross section, do not lie against one another, as can be seen in particular in FIG. 3, and thus form a slot 37 between them.
  • the spoon arm therefore rightly consists of a hollow profile-like housing slotted on its upper side - or approximately rectangular cross-section.
  • the vertically oriented regions of the parts 31 and 33 can also be referred to as side walls 31 and 33 and the horizontally oriented short legs of the parts 31 and 33 as the upper side 39. Part 35 thus forms the underside.
  • an end stiffener 45 is provided, which is located at the free end 47 of the spoon arm 21.
  • a partially slotted back plate 49 is fixedly connected to the top 39 at the other end of the spoon arm 21 by conventional means.
  • stiffening rails 51 are provided on the top 39 of the spoon arm.
  • An extendable and extendable dipper stick is designated 53 and is received by the interior of the dipper arm 21 in a telescopic manner, which will be explained in more detail below.
  • the dipper arm 53 also consists of a housing made of a hollow profile with a top wall 55 and a bottom wall 57 and side parts 59 and 61.
  • a hydraulically actuatable actuating cylinder 63 can be pivoted inside the dipper arm in the region of its front end between the side walls 31 and 33 via conventional ones Means attached. The other end of this actuating cylinder 63 pivotally engages the dipper arm 53 via conventional means provided between the side parts thereof. The dipper stick can thus be moved into and out of the dipper arm via this adjusting cylinder 63.
  • a spoon 64 is pivotally connected to the free end of the spoon arm 53, a linkage 65 additionally being provided, by means of which the spoon is extended by means of a wide Ren actuator cylinder 67 can be adjusted in its various operating positions.
  • a bearing 86 which is fixedly connected to the ceiling wall 55 of the arm 53 by conventional means and from there extends through the slot 37 in the top 39 from the arm and up and pivots the actuating cylinder.
  • the other end of the actuating cylinder 67 is connected to the linkage 65, and the bucket 64 can be actuated accordingly.
  • wear bands are provided on the inside of the bucket arm 21 and on the outside of the dipper arm 53.
  • These wear straps have a much greater hardness than the material of the bucket arm and the dipper stick and can be made, for example, of hardened steel with a Rockwell C hardness of 42.
  • 2 wear bands 70 are connected along the slot 37 to the inside of the upper side 39 of the spoon arm 21 by conventional means.
  • two further wear bands 72 are provided with the inside of the underside 35 opposite the bands 70.
  • a third pair of wear straps 78 is releasably disposed via conventional means on the outside of the bottom wall 57 of the dipper stick 53 in such a way that it lies opposite the wear straps 72, whereby all wear straps can lie against one another.
  • a fourth pair of wear straps 80 is releasable, so that it can also be easily replaced, by conventional means provided on the outside of the top wall 55 of the dipper stick so that they lie against the wear straps 70 over their entire length when the dipper stick has been inserted into the dipper arm is.
  • Fifth and sixth pairs of wear Bands 74 and 76 is still releasably connected by conventional means to the inside of the corresponding side parts 59 and 61 of the dipper arm and arranged such that they are opposite one another.
  • the dipper arm 53 is arranged in a telescopic manner in the dipper arm 21, there is a sliding contact between the wear bands 70 and 80 as well as between the wear bands 72 and 78 during the sliding movement. This contact also absorbs the essential weight of the dipper arm with a spoon .
  • the wear bands 74 and 75 need only lie against the inner sides of the corresponding side walls 31 and 33 of the spoon arm 21. Here, sliding along the walls without the presence of additional wear bands can be accepted, since the critical area of wear of the dipper stick occurs between the surfaces of the wear bands 72 and 78 as well as 70 and 80.

Landscapes

  • 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)
  • Load-Engaging Elements For Cranes (AREA)
  • Table Equipment (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP86106281A 1985-05-20 1986-05-07 Löffelarm, insbesondere für einen Tieflöffel Withdrawn EP0202545A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US73590385A 1985-05-20 1985-05-20
US735903 1985-05-20

Publications (1)

Publication Number Publication Date
EP0202545A1 true EP0202545A1 (de) 1986-11-26

Family

ID=24957705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86106281A Withdrawn EP0202545A1 (de) 1985-05-20 1986-05-07 Löffelarm, insbesondere für einen Tieflöffel

Country Status (6)

Country Link
EP (1) EP0202545A1 (es)
JP (1) JPS61266739A (es)
AU (1) AU5681386A (es)
BR (1) BR8602215A (es)
ES (2) ES8703561A1 (es)
FI (1) FI862063L (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395305A2 (en) * 1989-04-26 1990-10-31 Japanic Corporation Excavator
EP0794148A2 (en) * 1996-03-04 1997-09-10 Kidde Industries, Inc. A device for guiding a telescopic part for a telescopic boom
US6036429A (en) * 1995-06-06 2000-03-14 Cbw Automation, Inc. High speed article retrieval system
DE102006004207A1 (de) * 2006-01-30 2007-08-09 Lanz Baumaschinen Gmbh Gegabelter Ausleger für einen Bagger
CN105133679A (zh) * 2015-08-03 2015-12-09 广西大学 一种由曲柄滑块控制扩大挖掘深度的斗杆伸缩挖掘机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107989619B (zh) * 2017-12-20 2024-05-31 佛山科学技术学院 一种隧道挖掘的伸缩式挖掘臂

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1240986A (en) * 1970-02-05 1971-07-28 Ware Machine Works Inc Improvements to dipperstick assemblies
US3688930A (en) * 1971-04-05 1972-09-05 John F Shumaker Extensible dipper stick for backhoe
US3690742A (en) * 1971-11-19 1972-09-12 Grove Mfg Co Crane boom
EP0115941A1 (en) * 1983-01-26 1984-08-15 M.D.S. Furnace Services Limited Furnace delining apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1240986A (en) * 1970-02-05 1971-07-28 Ware Machine Works Inc Improvements to dipperstick assemblies
US3688930A (en) * 1971-04-05 1972-09-05 John F Shumaker Extensible dipper stick for backhoe
US3690742A (en) * 1971-11-19 1972-09-12 Grove Mfg Co Crane boom
EP0115941A1 (en) * 1983-01-26 1984-08-15 M.D.S. Furnace Services Limited Furnace delining apparatus

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395305A2 (en) * 1989-04-26 1990-10-31 Japanic Corporation Excavator
EP0395305A3 (en) * 1989-04-26 1992-01-22 Japanic Corporation Excavator
US6036429A (en) * 1995-06-06 2000-03-14 Cbw Automation, Inc. High speed article retrieval system
US6227352B1 (en) * 1995-06-06 2001-05-08 Cbw Automation, Inc. High speed article retrieval system
EP0794148A2 (en) * 1996-03-04 1997-09-10 Kidde Industries, Inc. A device for guiding a telescopic part for a telescopic boom
EP0794148A3 (en) * 1996-03-04 1999-02-10 Kidde Industries, Inc. A device for guiding a telescopic part for a telescopic boom
DE102006004207A1 (de) * 2006-01-30 2007-08-09 Lanz Baumaschinen Gmbh Gegabelter Ausleger für einen Bagger
DE102006004207B4 (de) * 2006-01-30 2015-02-12 Lanz Baumaschinen Gmbh Gegabelter Ausleger für einen Bagger
CN105133679A (zh) * 2015-08-03 2015-12-09 广西大学 一种由曲柄滑块控制扩大挖掘深度的斗杆伸缩挖掘机构

Also Published As

Publication number Publication date
FI862063L (fi) 1986-11-21
JPS61266739A (ja) 1986-11-26
ES2068787A6 (es) 1995-04-16
ES555085A0 (es) 1987-02-16
BR8602215A (pt) 1987-01-13
FI862063A0 (fi) 1986-05-16
ES8703561A1 (es) 1987-02-16
AU5681386A (en) 1986-11-27

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE FR GB IT NL SE

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Effective date: 19870515

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Effective date: 19881201

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Inventor name: WERNER, GREGORY KEITH