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EP0758701B1 - Tilt linkage arrangement for an excavator implement - Google Patents

Tilt linkage arrangement for an excavator implement Download PDF

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Publication number
EP0758701B1
EP0758701B1 EP96111763A EP96111763A EP0758701B1 EP 0758701 B1 EP0758701 B1 EP 0758701B1 EP 96111763 A EP96111763 A EP 96111763A EP 96111763 A EP96111763 A EP 96111763A EP 0758701 B1 EP0758701 B1 EP 0758701B1
Authority
EP
European Patent Office
Prior art keywords
bearing position
bearing
excavator
bucket
guide rod
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
EP96111763A
Other languages
German (de)
French (fr)
Other versions
EP0758701A1 (en
Inventor
Scott Svend Hendron
Michael Eugene Kennedy
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
Priority to EP00123817A priority Critical patent/EP1074664A3/en
Publication of EP0758701A1 publication Critical patent/EP0758701A1/en
Application granted granted Critical
Publication of EP0758701B1 publication Critical patent/EP0758701B1/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
    • E02F3/28—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
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/425—Drive systems for dipper-arms, backhoes or the like
    • 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
    • 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
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine

Definitions

  • the invention relates to an excavator, in particular a backhoe, with a spoon handle and a shovel, which is by means of a Hydraulic motor is pivoted via a linkage.
  • US-A-2,590,454, US-A-4,768,917 and US-A-2,753,059 disclose comparable linkage with triple and double handlebars, however for a front-end loader bucket, which is open to the front and upwards and thus to others Subject to movement conditions.
  • US-A-4,381,167 also shows an excavator with a triple Actuating link and two double guide links, one Form a parallelogram and therefore a compulsory guide for Generate pivoting of the bucket.
  • the problem underlying the invention is seen in that the swivel range of the blade is too small or at Working on a vertical wall too high forces on the Blade tip occur.
  • FIG. 1 shows a construction machine 10 which has a chassis 12 to which wheels 14 are attached to the construction machine 10 to support and move on the floor.
  • the construction machine 10 is equipped with a front loading shovel 16, the one suitable linkage 18 for adjusting the loading shovel 16 compared to the chassis 12.
  • the back area the construction machine 10 is with an excavator of the type Equipped with a backhoe that swivels to the chassis 12 connected boom 20, a dipper stick 22, the one Hinge 24 is pivotally connected to the boom 20, and contains a blade 26 which is in a first bearing 28 the arm 22 pivots.
  • a hydraulic motor 30 to adjust the blade 26 acts on the blade 26 a linkage 32.
  • the construction machine 10 with two Stabilizing struts 34 provided, only one of which is shown is.
  • the construction machine 10 is operated by a Driver's cabin 36 out.
  • the dipper stick 22 shown in FIG. 1 is in length adjustable, which does not affect the scope of protection present invention affects.
  • the hydraulic motor 30 contains a cylinder end 38 which is pivotable at point 40 to the Arm 22 is articulated.
  • the piston end of the hydraulic motor 30 is to a first bearing 46 of an actuating link 44 pivotally attached in the manner of a triple link.
  • the Actuating link 44 has a second bearing 48 provided that a pivot connection to the blade 26th manufactures.
  • the actuating link 44 is also with a third Bearing 50 equipped, which is pivotable on a second Bearing point - also 50 - of a curved guide link 52 attacks.
  • the guide link 52 in turn contains a first one Bearing point 54 for the pivotable connection with the dipper stick 22.
  • An essential feature of the present invention is that geometric arrangement of the bearings 46, 48, 50 of the Actuating link 44.
  • the third Bearing 50 of the control arm 44 between the first and second bearing 46 and 48 are provided.
  • the first and second bearings 46 and 48 of the Actuating link 44 a level above, i. H. of the Dipper stick 22 facing away, the third bearing 50 located.
  • the second and the third Bearing 48 and 50 one level.
  • the first bearing 46 lies below this level and is located on the dipper stick 22.
  • a second, the first level in the third bearing 50 intersecting plane can be formed perpendicular to the first. Proceeding from this, the first bearing 46 lies above it Plane and the shovel 26 out of the way.
  • the present arrangement of the bearings, the Actuating link 44 and the guide link 52 ensures a compared to the flatter that can be achieved with conventional poles Edge cutting force curve of the blade 26, since the blade 26 from an extreme return position to an extreme one Position moved.

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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)
  • Shovels (AREA)

Description

Die Erfindung betrifft einen Bagger, insbesondere Heckbagger, mit einem Löffelstiel und einer Schaufel, die mittels eines Hydraulikmotors über ein Gestänge verschwenkt wird.The invention relates to an excavator, in particular a backhoe, with a spoon handle and a shovel, which is by means of a Hydraulic motor is pivoted via a linkage.

Aus den Prospekten "Lokomo hydraulic excavator T340, Druckvermerk 69/10.70-2000-UKp" und dem Prospekt "LOKOMO, Druckvermerk 88-01-71-1000" gehen Bagger mit einem Ausleger und einem daran schwenkbar angebrachten Löffelstiel mit einer Schaufel hervor, die mittels eines Hydraulikzylinders um ein Gelenk geschwenkt wird. Zwischen dem Hydraulikzylinder und der Schaufel erstreckt sich ein Lenker mit drei Lagerstellen, von denen eine mit dem Hydraulikzylinder, eine mit der Schaufel und eine mittlere mit einem zweiten Lenker verbunden ist, der anderenends schwenkbar an dem Löffelstiel gehalten ist.From the brochures "Lokomo hydraulic excavator T340, Printed notice 69 / 10.70-2000-UKp "and the brochure" LOKOMO, Printing reference 88-01-71-1000 "go with a boom and excavator a dipper stick attached to it with a Bucket emerges by means of a hydraulic cylinder Joint is pivoted. Between the hydraulic cylinder and the Shovel extends a handlebar with three bearings, from one with the hydraulic cylinder, one with the shovel and a middle one is connected to a second link which is pivotally held on the other hand on the dipper stick.

Die US-A-2,590,454, US-A-4,768,917 und US-A-2,753,059 offenbaren vergleichbare Gestänge mit dreifachen und zweifachen Lenkern, allerdings für eine frontseitig angeschlossene Laderschaufel, die nach vorne und oben geöffnet ist und somit anderen Bewegungsverhältnissen unterliegt.US-A-2,590,454, US-A-4,768,917 and US-A-2,753,059 disclose comparable linkage with triple and double handlebars, however for a front-end loader bucket, which is open to the front and upwards and thus to others Subject to movement conditions.

Die US-A-4,381,167 zeigt zudem einen Bagger mit einem dreifachen Betätigungslenker und zwei zweifachen Führungslenkern, die ein Parallelogramm bilden und daher eine Zwangsführung beim Schwenken der Schaufel erzeugen.US-A-4,381,167 also shows an excavator with a triple Actuating link and two double guide links, one Form a parallelogram and therefore a compulsory guide for Generate pivoting of the bucket.

Das der Erfindung zugrunde liegende Problem wird darin gesehen, daß der Schwenkbereich der Schaufel zu klein ist bzw. beim Arbeiten an einer vertikalen Wand zu hohe Kräfte an der Schaufelspitze auftreten.The problem underlying the invention is seen in that the swivel range of the blade is too small or at Working on a vertical wall too high forces on the Blade tip occur.

Dieses Problem wird erfindungsgemäß durch die Lehre des Patentanspruchs 1 gelöst, wobei in den weiteren Patentansprüchen die Lösung in vorteilhafter Weise weiterentwickelnde Merkmale aufgeführt sind. This problem is solved according to the invention by the teaching of the patent claim 1 solved, the in the further claims Features that further develop features in an advantageous manner are listed.

Auf diese Weise kann bei gleicher Länge des Hydraulikmotors, der im einfachsten Fall ein doppeltwirkender Hydraulikzylinder ist, ein größerer Stellweg der Schaufel erreicht werden, was von Vorteil ist, weil im Transportbetrieb die Schaufel näher an den Löffelstiel und beim Arbeiten an vertikalen Wänden weiter zurückgeschwenkt werden kann.In this way, the same length of the hydraulic motor in the simplest case is a double-acting hydraulic cylinder, a larger travel range of the bucket can be achieved, which of The advantage is that the shovel is closer to the Dipper stick and continue working on vertical walls can be pivoted back.

Dadurch, daß der Führungslenker gebogen ist, kann er weiter zu der Schaufel hin geschwenkt werden, was einen noch größeren Bewegungsbereich der Schaufel bewirkt.Because the guide link is bent, it can continue to the shovel can be swung out, making an even bigger one Movement area of the blade causes.

In der Zeichnung ist ein nachfolgend näher beschriebenes Ausführungsbeispiel der Erfindung dargestellt. Es zeigt:

Fig. 1
eine Baumaschine mit einem Löffelstiel in perspektivischer Ansicht
Fig. 2
einen Endbereich des Löffelstiels mit einer Schaufel in einer ersten Endstellung und
Fig. 3
den Endbereich des Löffelstiels mit der Schaufel in einer zweiten Endstellung.
In the drawing, an embodiment of the invention described in more detail below is shown. It shows:
Fig. 1
a construction machine with a dipper stick in a perspective view
Fig. 2
an end region of the dipper stick with a shovel in a first end position and
Fig. 3
the end of the dipper stick with the shovel in a second end position.

Figur 1 zeigt eine Baumaschine 10, die ein Fahrgestell 12 aufweist, an das Räder 14 angebracht sind, um die Baumaschine 10 auf dem Boden abzustützen und zu bewegen. Die Baumaschine 10 ist mit einer frontseitigen Ladeschaufel 16 ausgerüstet, die ein passendes Gestänge 18 zum Verstellen der Ladeschaufel 16 gegenüber dem Fahrgestell 12 aufweist. Der rückwärtige Bereich der Baumaschine 10 ist mit einem Bagger in der Art eines Heckbaggers bestückt, der einen schwenkbar an das Fahrgestell 12 angeschlossenen Ausleger 20, einen Löffelstiel 22, der über ein Gelenk 24 schwenkbar an den Ausleger 20 angeschlossen ist, und eine Schaufel 26 enthält, die in einer ersten Lagerstelle 28 an dem Löffelstiel 22 schwenkbar angreift. Ein Hydraulikmotor 30 zum Verstellen der Schaufel 26 beaufschlagt die Schaufel 26 über ein Gestänge 32. Außerdem ist die Baumaschine 10 mit zwei Stabilisierungsstreben 34 versehen, von denen nur eine gezeigt ist. Die Bedienung der Baumaschine 10 erfolgt von einer Fahrerkabine 36 aus.FIG. 1 shows a construction machine 10 which has a chassis 12 to which wheels 14 are attached to the construction machine 10 to support and move on the floor. The construction machine 10 is equipped with a front loading shovel 16, the one suitable linkage 18 for adjusting the loading shovel 16 compared to the chassis 12. The back area the construction machine 10 is with an excavator of the type Equipped with a backhoe that swivels to the chassis 12 connected boom 20, a dipper stick 22, the one Hinge 24 is pivotally connected to the boom 20, and contains a blade 26 which is in a first bearing 28 the arm 22 pivots. A hydraulic motor 30 to adjust the blade 26 acts on the blade 26 a linkage 32. In addition, the construction machine 10 with two Stabilizing struts 34 provided, only one of which is shown is. The construction machine 10 is operated by a Driver's cabin 36 out.

Der in Figur 1 gezeigte Löffelstiel 22 ist in seiner Länge verstellbar, was sich nicht auf den Schutzbereich der vorliegenden Erfindung auswirkt. Der Hydraulikmotor 30 enthält ein Zylinderende 38, das bei der Stelle 40 schwenkbar an den Löffelstiel 22 angelenkt ist. Das Kolbenende des Hydraulikmotors 30 ist an eine erste Lagerstelle 46 eines Betätigungslenkers 44 in der Art eines Dreifachglieds schwenkbar angebracht. Der Betätigungslenker 44 ist mit einer zweiten Lagerstelle 48 versehen, die eine Schwenkverbindung zu der Schaufel 26 herstellt. Der Betätigungslenker 44 ist auch mit einer dritten Lagerstelle 50 ausgestattet, die schwenkbar an einer zweiten Lagerstelle - ebenfalls 50 - eines gebogenen Führungslenkers 52 angreift. Der Führungslenker 52 enthält wiederum eine erste Lagerstelle 54 zur schwenkbaren Verbindung mit dem Löffelstiel 22.The dipper stick 22 shown in FIG. 1 is in length adjustable, which does not affect the scope of protection present invention affects. The hydraulic motor 30 contains a cylinder end 38 which is pivotable at point 40 to the Arm 22 is articulated. The piston end of the hydraulic motor 30 is to a first bearing 46 of an actuating link 44 pivotally attached in the manner of a triple link. The Actuating link 44 has a second bearing 48 provided that a pivot connection to the blade 26th manufactures. The actuating link 44 is also with a third Bearing 50 equipped, which is pivotable on a second Bearing point - also 50 - of a curved guide link 52 attacks. The guide link 52 in turn contains a first one Bearing point 54 for the pivotable connection with the dipper stick 22.

Ein wesentliches Merkmal der vorliegenden Erfindung ist die geometrische Anordnung der Lagerstellen 46, 48, 50 des Betätigungslenkers 44. In einer Beziehung ist die dritte Lagerstelle 50 des Betätigungslenkers 44 zwischen dessen erster und zweiter Lagerstelle 46 und 48 vorgesehen. Zusätzlich definieren die erste und zweite Lagerstelle 46 und 48 des Betätigungslenkers 44 eine Ebene oberhalb der, d. h. von dem Löffelstiel 22 weggerichtet, sich die dritte Lagerstelle 50 befindet.An essential feature of the present invention is that geometric arrangement of the bearings 46, 48, 50 of the Actuating link 44. In one relationship is the third Bearing 50 of the control arm 44 between the first and second bearing 46 and 48 are provided. In addition define the first and second bearings 46 and 48 of the Actuating link 44 a level above, i. H. of the Dipper stick 22 facing away, the third bearing 50 located.

In einer anderen Beziehung definieren die zweite und die dritte Lagerstelle 48 und 50 eine Ebene. Die erste Lagerstelle 46 liegt unterhalb dieser Ebene und ist dem Löffelstiel 22 zugelegen. Eine zweite, die erste Ebene in der dritten Lagerstelle 50 schneidende Ebene kann senkrecht zu der ersten gebildet werden. Ausgehend hiervon liegt die erste Lagerstelle 46 oberhalb dieser Ebene und der Schaufel 26 abgelegen. In another relationship define the second and the third Bearing 48 and 50 one level. The first bearing 46 lies below this level and is located on the dipper stick 22. A second, the first level in the third bearing 50 intersecting plane can be formed perpendicular to the first. Proceeding from this, the first bearing 46 lies above it Plane and the shovel 26 out of the way.

Die vorliegende Anordnung der Lagerstellen, des Betätigungslenkers 44 und des Führungslenkers 52 sorgt für eine gegenüber mit herkömmlichen Gestängen erreichbare flachere Kantenschneidkraftkurve der Schaufel 26, da sich die Schaufel 26 von einer extremen Rückholstellung zu einer extremen angelegten Stellung bewegt.The present arrangement of the bearings, the Actuating link 44 and the guide link 52 ensures a compared to the flatter that can be achieved with conventional poles Edge cutting force curve of the blade 26, since the blade 26 from an extreme return position to an extreme one Position moved.

Claims (2)

  1. Excavator, in particular a rear excavator, having a dipper arm (22) and a bucket (26), which is pivoted by means of a hydraulic motor (30) via a linkage:
    a) the linkage containing an operating rod (44) and a guide rod (52),
    b) the operating rod (44) having a first, a second and a third bearing position (46, 48 and 50),
    c) the guide rod (52) having a first and a second bearing position (54 and 50),
    d) the bucket (26) having a first and a second bearing position (28 and 48),
    e) the first bearing position (46) of the operating rod (44) being connected pivotally to the hydraulic motor (30), the second bearing position (48) to the second bearing position of the bucket (26) and the third bearing position (50) to the second bearing position (50) of the guide rod (52),
    f) the bucket (26) and the guide rod (52) being fixed to the dipper arm (22) via their respectively first bearing position (28 and 54) and
    g) in the case of a system of coordinates set by the third bearing position (50) of the operating rod (44), the central point of which system lies in the third bearing position (50) and the coordinate of which system extends through the second and third bearing position (48) and (50), the first bearing position (46) of the operating rod (44) is located in the first quadrant.
  2. Excavator according to claim 1, characterised in that the guide rod (52) is bent.
EP96111763A 1995-08-16 1996-07-22 Tilt linkage arrangement for an excavator implement Expired - Lifetime EP0758701B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00123817A EP1074664A3 (en) 1995-08-16 1996-07-22 Excavator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US515851 1983-07-21
US08/515,851 US5592762A (en) 1995-08-16 1995-08-16 Excavator bucket linkage

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP00123817A Division EP1074664A3 (en) 1995-08-16 1996-07-22 Excavator

Publications (2)

Publication Number Publication Date
EP0758701A1 EP0758701A1 (en) 1997-02-19
EP0758701B1 true EP0758701B1 (en) 2001-10-24

Family

ID=24053028

Family Applications (2)

Application Number Title Priority Date Filing Date
EP96111763A Expired - Lifetime EP0758701B1 (en) 1995-08-16 1996-07-22 Tilt linkage arrangement for an excavator implement
EP00123817A Withdrawn EP1074664A3 (en) 1995-08-16 1996-07-22 Excavator

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00123817A Withdrawn EP1074664A3 (en) 1995-08-16 1996-07-22 Excavator

Country Status (6)

Country Link
US (1) US5592762A (en)
EP (2) EP0758701B1 (en)
JP (1) JPH09105137A (en)
CA (1) CA2175409C (en)
DE (1) DE59607986D1 (en)
MX (1) MX9603420A (en)

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US5486084A (en) * 1993-06-07 1996-01-23 Raymond F. Pitman Multiple purpose material handling and working apparatus

Also Published As

Publication number Publication date
JPH09105137A (en) 1997-04-22
CA2175409C (en) 2000-02-22
EP1074664A2 (en) 2001-02-07
MX9603420A (en) 1997-03-29
EP0758701A1 (en) 1997-02-19
DE59607986D1 (en) 2001-11-29
EP1074664A3 (en) 2002-04-03
CA2175409A1 (en) 1997-02-17
US5592762A (en) 1997-01-14

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