EP1369535B1 - Bucket excavator - Google Patents

Bucket excavator Download PDF

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Publication number
EP1369535B1
EP1369535B1 EP03012596A EP03012596A EP1369535B1 EP 1369535 B1 EP1369535 B1 EP 1369535B1 EP 03012596 A EP03012596 A EP 03012596A EP 03012596 A EP03012596 A EP 03012596A EP 1369535 B1 EP1369535 B1 EP 1369535B1
Authority
EP
European Patent Office
Prior art keywords
shovel
shaft
bearing
needle bearing
shaft shank
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
EP03012596A
Other languages
German (de)
French (fr)
Other versions
EP1369535A1 (en
Inventor
Peter Dappen
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1369535A1 publication Critical patent/EP1369535A1/en
Application granted granted Critical
Publication of EP1369535B1 publication Critical patent/EP1369535B1/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
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/006—Pivot joint assemblies
    • 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
    • E02F3/405—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 using vibrating means
    • 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
    • E02F3/407—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with ejecting or other unloading device
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • E02F7/06—Delivery chutes or screening plants or mixing plants mounted on dredgers or excavators

Definitions

  • the invention relates to a backhoe according to the preamble of claim 1 as in EP-A1-1002904 disclosed.
  • the invention has for its object to provide for such a high stress loaded backhoe, especially in a heavily polluted environment over a longer period of reliable storage for the individual screen bars.
  • the bucket 10 shown in Figure 1 includes a cross member 3 as a fitting to an excavator. At this Traverse 3 is a over the entire length of the bucket 10 extending hood 4 is attached. On this hood side walls 5 are fixed on both sides, which are designed according to the desired profile of the bucket. These side walls 5 are connected to the front end of the bucket by a crossbar 6
  • the bottom of the bucket is formed by spaced screen bars 1a - 1n and 2a - 2n, each adjacent screen bars are driven to oscillate to opposite movements.
  • the screen bars are pivotally mounted with their front ends on an axis 8 extending between the side walls 5.
  • Each screen has a first, in a central rest position substantially horizontally extending, rectilinear section 1.1 or 2.1 and an adjoining arcuately upwardly curved second section 1.2 or 2.2, to the tangentially in each case a third rectilinear section 1.3 or 2.3 connects.
  • shaft 9 In the region of the upper ends of the screen bars between the two side walls 5 a driven about its axis to an oscillating pivotal movement shaft 9 is mounted on which the respective jointly pivotable in the same direction, a first group forming screens 1a - 1n along a first common axis 11 and the rest, forming a second group Siebstäbe 2a - 2n along a second common axis 12 which is spaced from the first axis 11, articulated.
  • the first and second axes 11 and 12 are located diametrically opposite relative to the axis of the shaft 9, wherein these three axes lie in a common plane, in in the middle position of the two screening groups and the axis 8 is located.
  • the plane defined by these three axes includes an angle ⁇ between 28 ° to 42 ° with the vertical, whereby, in particular when the total pivoting angle of the shaft 9 about its axis is less than 26 °, during operation of the bucket the mechanical stress in the region of the drive-side ends of the screen bars remains low.
  • the oscillating pivot drive of the shaft 9 can be done either by means of hydraulic cylinders or in the manner shown in Figure 2 by means of a crank mechanism 15th
  • Figure 3 shows the storage of a single sieve, z. B. the screen tab 1 a on the comb-like hinged to the shaft 9 fingers 13th
  • a shaft journal 21 is provided on both sides with stub shafts 21.1, which have a smaller diameter than the shaft journal in its actual storage area.
  • the shaft journal 21 is fastened by means of these bearing stubs 21.1 by means of screws 22 to a holder formed by two fingers 13.
  • An oscillating back and forth swiveling screen bar 1a -in or 2a-2n has a bearing bush 1a 'or 2a', with which the screen bar is mounted on the shaft journal 21 by means of a needle bearing 25.
  • On both sides of the needle bearing O-ring seals 26 are mounted between the shaft journal 21 and the bearing bushing 1a 'and 2a'.
  • the shaft journal 21 is provided with a centrally extending lubricant channel 21.2, on the one hand a grease nipple 27 connects, and on the other hand in an outgoing from the outer periphery of the shaft journal 21, substantially radially extending lubricant bore 21.3 opens, which is located in the region of the needle bearing.
  • This needle bearing 25 is preferably a needle bearing without an inner ring.
  • the two O-ring seals 26 are supported or secured on their sides facing away from the needle bearing 25 in the axial direction by means of the bearing bushing 1a ', 2a' locking fitting rings 28.
  • Each fitting ring 28 is supported on the one hand with its inner circumference on the shaft journal 21 and on the other hand with its outer end face on the associated finger 13. The regions of the shaft journal 21 supporting the individual fitting ring project axially beyond the bearing bushing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Earth Drilling (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Shovels (AREA)

Abstract

Shovel dredger comprises a shovel having a slotted hole screen base with several sieve bars arranged a distance apart and pivotably mounted at their front ends about a common axis. Adjacent sieve bars oscillate in different directions. The sieve bars oscillating in the same direction belong to a first (1a) or a second group. The sieve bars are hinged in a comb-like manner on fingers (13) forming a holder fixed on a shaft. Each sieve bar has a bearing bushing (1a') positioned on a shaft journal (21) by a needle bearing (25). The shaft journal and the bearing bushing each have a constant diameter. The bearing journal is provided with a central lubricant channel (21.2) leading from the outer periphery of the shaft journal and opening into a radial lubricant bore (21.3). O-ring seals (26) secured against axial displacement are attached by outer-lying adjusting rings (28) to both sides of the needle bearing.

Description

Die Erfindung betrifft einen Löffelbagger gemäß dem Oberbegriff des Patentanspruchs 1 wie in EP-A1-1002904 offenbart.The invention relates to a backhoe according to the preamble of claim 1 as in EP-A1-1002904 disclosed.

Der Erfindung liegt die Aufgabe zugrunde, für einen derartigen hohen Beanspruchungen ausgesetzten Löffelbagger insbesondere in einer stark verschmutzten Umgebung eine über einen längeren Zeitraum betriebssichere Lagerung für die einzelnen Siebstäbe zu schaffen.The invention has for its object to provide for such a high stress loaded backhoe, especially in a heavily polluted environment over a longer period of reliable storage for the individual screen bars.

Zur Lösung dieser Aufgabe dienen die Merkmale im Kennzeichnen des Patentsnapruchs 1.To solve this object, the features in characterizing the Patentnapruchs serve 1.

In den Unteransprüchen sind weitere Ausgestaltungen einer derartigen Lagerung beschrieben.In the subclaims further embodiments of such storage are described.

Ein Ausführungsbeispiel der Erfindung wird im folgenden anhand der Zeichnung näher beschrieben.

  • Figur 1 zeigt eine Draufsicht auf einen Löffelbagger;
  • Figur 2 zeigt teilweise im Schnitt eine Seitenansicht des Baggerlöffels;
  • Figur 3 zeigt die Lagerung für einen einzelnen Siebstab des Baggerlöffels.
An embodiment of the invention will be described below with reference to the drawing.
  • Figure 1 shows a plan view of a backhoe;
  • FIG. 2 shows, partly in section, a side view of the bucket;
  • Figure 3 shows the storage for a single sieve of the bucket.

Der in Figur 1 dargestellte Baggerlöffel 10 enthält eine Traverse 3 als Anschlußstück an einen Baggerarm. An dieser Traverse 3 ist eine sich über die gesamte Länge des Baggerlöffels 10 erstreckende Haube 4 befestigt. An dieser Haube sind beidseitig Seitenwände 5 befestigt, die entsprechend dem gewünschten Profil des Baggerlöffels ausgestaltet sind. Diese Seitenwände 5 sind an dem vorderen Ende des Baggerlöffels durch eine Querstrebe 6 verbundenThe bucket 10 shown in Figure 1 includes a cross member 3 as a fitting to an excavator. At this Traverse 3 is a over the entire length of the bucket 10 extending hood 4 is attached. On this hood side walls 5 are fixed on both sides, which are designed according to the desired profile of the bucket. These side walls 5 are connected to the front end of the bucket by a crossbar 6

Der Boden des Baggerlöffels ist durch im Abstand voneinander liegende Siebstäbe 1a - 1n und 2a - 2n gebildet, wobei jeweils benachbarte Siebstäbe oszillierend zu gegenläufigen Bewegungen antreibbar sind. Die Siebstäbe sind mit ihren vorderen Enden auf einer sich zwischen den Seitenwänden 5 erstreckenden Achse 8 schwenkbar gelagert. Jeder Siebstab hat einen ersten, in einer mittleren Ruhestellung im wesentlichen horizontal verlaufenden, geradlinigen Abschnitt 1.1 bzw. 2.1 und einen daran anschließenden, bogenförmig nach oben gekrümmten zweiten Abschnitt 1.2 bzw. 2.2, an den sich im wesentlichen tangential jeweils ein dritter geradliniger Abschnitt 1.3 bzw. 2.3 anschließt.The bottom of the bucket is formed by spaced screen bars 1a - 1n and 2a - 2n, each adjacent screen bars are driven to oscillate to opposite movements. The screen bars are pivotally mounted with their front ends on an axis 8 extending between the side walls 5. Each screen has a first, in a central rest position substantially horizontally extending, rectilinear section 1.1 or 2.1 and an adjoining arcuately upwardly curved second section 1.2 or 2.2, to the tangentially in each case a third rectilinear section 1.3 or 2.3 connects.

Im Bereich der oberen Enden der Siebstäbe ist zwischen den beiden Seitenwänden 5 eine um ihre Achse zu einer oszillierenden Schwenkbewegung antreibbare Welle 9 gelagert, an der die jeweils gemeinsam in der gleichen Richtung verschwenkbaren, eine erste Gruppe bildenden Siebstäbe 1a - 1n entlang einer ersten gemeinsamen Achse 11 und die übrigen, eine zweite Gruppe bildenden Siebstäbe 2a - 2n entlang einer zweiten gemeinsamen Achse 12, die von der ersten Achse 11 im Abstand liegt, angelenkt sind. Zum Anlenken der Siebstäbe an der Welle dienen kammartig an der Welle 9 befestigte Finger 13 bzw. 14. Die ersten und zweiten Achsen 11 und 12 liegen sich relativ zur Achse der Welle 9 diametral gegenüber, wobei diese drei Achsen in einer gemeinsamen Ebene liegen, in der in der Mittelstellung der beiden Siebstabgruppen auch die Achse 8 liegt.In the region of the upper ends of the screen bars between the two side walls 5 a driven about its axis to an oscillating pivotal movement shaft 9 is mounted on which the respective jointly pivotable in the same direction, a first group forming screens 1a - 1n along a first common axis 11 and the rest, forming a second group Siebstäbe 2a - 2n along a second common axis 12 which is spaced from the first axis 11, articulated. The first and second axes 11 and 12 are located diametrically opposite relative to the axis of the shaft 9, wherein these three axes lie in a common plane, in in the middle position of the two screening groups and the axis 8 is located.

In der mittleren Ruhestellung der Siebstäbe schließt die durch diese drei Achsen definierte Ebene mit der Vertikalen einen Winkel α zwischen 28° bis 42° ein, wodurch, insbesondere wenn der gesamte Schwenkwinkel der Welle 9 um ihre Achse kleiner als 26° ist, im Betriebdes Baggerlöffels die mechanische Beanspruchung im Bereich der antriebsseitigen Enden der Siebstäbe gering bleibt.In the central resting position of the screen bars, the plane defined by these three axes includes an angle α between 28 ° to 42 ° with the vertical, whereby, in particular when the total pivoting angle of the shaft 9 about its axis is less than 26 °, during operation of the bucket the mechanical stress in the region of the drive-side ends of the screen bars remains low.

Der oszillierende Schwenkantrieb der Welle 9 kann entweder mittels Hydraulikzylindern erfolgen oder in der in Figur 2 dargestellten Weise mittels eines Kurbeltriebs 15.The oscillating pivot drive of the shaft 9 can be done either by means of hydraulic cylinders or in the manner shown in Figure 2 by means of a crank mechanism 15th

Figur 3 zeigt die Lagerung eines einzelnen Siebstabes, z. B. des Siebstabes 1 a an dem kammartig an der Welle 9 angelenkten Finger 13.Figure 3 shows the storage of a single sieve, z. B. the screen tab 1 a on the comb-like hinged to the shaft 9 fingers 13th

Ein Wellenzapfen 21 ist beidseitig mit Wellenstümpfen 21.1 versehen, die einen kleineren Durchmesser als der Wellenzapfen in seinem eigentlichen Lagerbereich haben. Der Wellenzapfen 21 ist mittels dieser Lagerstümpfe 21.1 mittels Schrauben 22 an einer durch zwei Finger 13 gebildeten Halterung befestigt.A shaft journal 21 is provided on both sides with stub shafts 21.1, which have a smaller diameter than the shaft journal in its actual storage area. The shaft journal 21 is fastened by means of these bearing stubs 21.1 by means of screws 22 to a holder formed by two fingers 13.

Ein oszillierend hin- und herschwenkbarer Siebstab 1a ―in bzw. 2a - 2n hat eine Lagerbuchse 1a' bzw. 2a', mit der der Siebstab mittels eines Nadellagers 25 auf dem Wellenzapfen 21 gelagert ist. Zu beiden Seiten des Nadellagers sind O-Ringdichtungen 26 zwischen dem Wellenzapfen 21 und der Lagerbüchse 1a' bzw. 2a' angebracht. Der Wellenzapfen 21 ist mit einem zentrisch verlaufenden Schmiermittelkanal 21.2 versehen, an den einerseits ein Schmiernippel 27 anschließt, und der andererseits in eine vom Außenumfang des Wellenzapfens 21 ausgehende, im wesentlichen radial verlaufende Schmiermittelbohrung 21.3 mündet, die im Bereich des Nadellagers liegt. Bei diesem Nadellager 25 handelt es sich vorzugsweise um ein Nadellager ohne Innenring.An oscillating back and forth swiveling screen bar 1a -in or 2a-2n has a bearing bush 1a 'or 2a', with which the screen bar is mounted on the shaft journal 21 by means of a needle bearing 25. On both sides of the needle bearing O-ring seals 26 are mounted between the shaft journal 21 and the bearing bushing 1a 'and 2a'. The shaft journal 21 is provided with a centrally extending lubricant channel 21.2, on the one hand a grease nipple 27 connects, and on the other hand in an outgoing from the outer periphery of the shaft journal 21, substantially radially extending lubricant bore 21.3 opens, which is located in the region of the needle bearing. This needle bearing 25 is preferably a needle bearing without an inner ring.

Die beiden O-Ringdichtungen 26 werden an ihren von dem Nadellager 25 abgewandten Seiten in axialer Richtung mittels auch die Lagerbüchse 1a', 2a' sichernden Passringen 28 abgestützt bzw. gesichert. Jeder Passring 28 ist einerseits mit seinem Innenumfang auf dem Wellenzapfen 21 und andererseits mit seiner äußeren Stirnfläche an dem zugeordnetem Finger 13 abgestützt. Die den einzelnen Passring abstützenden Bereiche des Wellenzapfens 21 stehen axial über die Lagerbüchse vor.The two O-ring seals 26 are supported or secured on their sides facing away from the needle bearing 25 in the axial direction by means of the bearing bushing 1a ', 2a' locking fitting rings 28. Each fitting ring 28 is supported on the one hand with its inner circumference on the shaft journal 21 and on the other hand with its outer end face on the associated finger 13. The regions of the shaft journal 21 supporting the individual fitting ring project axially beyond the bearing bushing.

Claims (5)

  1. A shovel dredger, whereof the shovel (10) has a slotted screen base having a plurality of screen rods (1a - 1 n; 2a - 2n) which are spaced from one another and are mounted to pivot on a common axis (8) in the region of their front ends, with respectively adjacent screen rods being drivable such that they oscillate in opposing motions, and with the screen rods which are pivotal in the same direction being grouped respectively into a first group (1a -1n) and a second group (2a - 2n), with the screen rods being articulated to fingers (13) which are secured to a shaft in the manner of a comb and form a mount, characterised in that each screen rod (1a - 1n; 2a - 2n) has a bearing bush (1a', 2a') which is mounted on a shaft shank (21) by means of a needle bearing (25), in that O-ring seals (26) which are secured by external fitting rings (28) to prevent axial offset are mounted on either side of the needle bearing (25), in that the shaft shank (21) on the one hand and the bearing bush (1 a'; 2a') in the region of the shaft shank (21) on the other have a constant diameter in the region between the O-ring seals (26), and in that the shaft shank (21) is provided with a central lubricant duct (21.2) which opens into a substantially radial lubricant bore (21.3) which runs from the outer periphery of the shaft shank.
  2. A shovel dredger according to Claim 1, characterised in that the lubricant bore (21.3) is in the region of the needle bearing.
  3. A shovel dredger according to Claim 1, characterised in that the needle bearing is a needle bearing with no inner ring.
  4. A shovel dredger according to Claim 1, characterised in that each fitting ring (28) is supported against the shaft shank (21) by means of its inner periphery and against the fingers (13) carrying the shaft shank by means of its outer end face.
  5. A shovel dredger according to Claim 4, characterised in that the regions of the shaft shank (21) supporting the individual fitting ring project axially laterally beyond the bearing bush (1a'; 2a').
EP03012596A 2002-06-03 2003-06-03 Bucket excavator Expired - Lifetime EP1369535B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10224470A DE10224470A1 (en) 2002-06-03 2002-06-03 shovel
DE10224470 2002-06-03

Publications (2)

Publication Number Publication Date
EP1369535A1 EP1369535A1 (en) 2003-12-10
EP1369535B1 true EP1369535B1 (en) 2007-12-26

Family

ID=29432576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03012596A Expired - Lifetime EP1369535B1 (en) 2002-06-03 2003-06-03 Bucket excavator

Country Status (3)

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EP (1) EP1369535B1 (en)
AT (1) ATE382110T1 (en)
DE (2) DE10224470A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006058945A1 (en) * 2006-02-07 2007-08-23 Schaeffler Kg Sealing ring for e.g. roller bearing, has sealing surface configured in form of tractrix surface to lead uniform loading of sealing surface during operation of ring, and sealing and counter surfaces provided with sealing effect
FI126696B (en) * 2009-03-24 2017-04-13 Allu Finland Oy Crushing bucket
FI123997B (en) 2012-10-01 2014-01-31 Pohmako Ky Scoop and its use
CN103603406B (en) * 2013-10-22 2016-10-26 徐州五洋科技股份有限公司 A kind of scalable articulated steering device taking off rock machine for explosion-proof type crawler type
DE102018200176A1 (en) * 2018-01-08 2019-07-11 Sms Group Gmbh Connecting element for the articulated connection of a first machine part with a second machine part
CN113373999B (en) * 2021-06-23 2023-01-03 中铁二局集团建筑有限公司 Reinforced concrete pipe culvert dredging method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772150A (en) * 1987-05-08 1988-09-20 Dresser Industries, Inc. Hinge pin assembly
US5044812A (en) * 1990-01-23 1991-09-03 Dresser Industries, Inc. Sealed and lubricated pivot pin assembly and method
DE19715358C2 (en) * 1997-04-12 1999-11-25 Peter Dappen Backhoe
JPH10311335A (en) * 1997-05-13 1998-11-24 Hitachi Constr Mach Co Ltd Bearing device
JP2000145791A (en) * 1998-09-09 2000-05-26 Nsk Ltd Needle roller bearing and cam follower

Also Published As

Publication number Publication date
DE10224470A1 (en) 2003-12-11
DE50308876D1 (en) 2008-02-07
EP1369535A1 (en) 2003-12-10
ATE382110T1 (en) 2008-01-15

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