EP0817891B1 - Bucket for a mechanical excavator - Google Patents

Bucket for a mechanical excavator Download PDF

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Publication number
EP0817891B1
EP0817891B1 EP96909139A EP96909139A EP0817891B1 EP 0817891 B1 EP0817891 B1 EP 0817891B1 EP 96909139 A EP96909139 A EP 96909139A EP 96909139 A EP96909139 A EP 96909139A EP 0817891 B1 EP0817891 B1 EP 0817891B1
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EP
European Patent Office
Prior art keywords
deep bucket
deep
bucket according
bucket
double scissors
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EP96909139A
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German (de)
French (fr)
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EP0817891A1 (en
Inventor
Thomas Ruff
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Individual
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Individual
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    • 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

Definitions

  • the invention relates to a bucket according to the preamble of claim 1.
  • a backhoe is from the EP 0 435 796 (Suau) known.
  • the invention is therefore based on the object to create infinitely adjustable bucket where the Force of the forced guidance of the spoon parts against each other only decreases to a small extent and the parallel guidance of the Spoon parts to each other is guaranteed.
  • Backhoe 1 for interchangeable assembly on Boom head of a backhoe, not shown, is in its width between a minimum value bl (Figure 2A) and a maximum value b2 (Figure 2B) continuously adjustable.
  • the Backhoe 1 consists of a fixed central Middle shell 2 and two extendable to the middle shell 2 and mutually mirror-symmetrical side shells 31, 32.
  • the extension movement of the side shells 31, 32 is on the Middle shell 2 positively guided, the positive guidance preferably consists of at least two double scissors 5, 6.
  • FIGS 5A, 5B show the double scissors system 5 in retracted state ( Figure 5A) and in the extended State ( Figure 5B).
  • the double scissors system 5 consists of a double scissors 51 and a preferably hydraulic Pressure piston 52 for retracting and extending the double scissors 51.
  • the outer pair of joints 511, 512 is of the double scissors 51 on the side shell 31, the outer pair of joints 513, 514 the side shell 32 and the middle pair of joints 515, 516 the middle shell 2 positively guided.
  • the forced operation takes place in such a way that the joints 511, 513, 515 are stationary and are pivotally mounted, while the joints 512, 514, 516 are each pivotably mounted on a sliding body 53, which in turn is displaceable in a rail 54.
  • This forced operation is absolutely parallel Transmission of the pressure forces of the pressure piston 52.
  • the double scissors system 5 consists of two superimposed double scissors.
  • the arms of this Double scissors alternately grip the side shells 31, 32 on. Alternating means that the first and third arm to the side shell 31 and the second and fourth arms to the Side shell 32 attacks.
  • Figure 3 it can be seen that both double shear systems 5, 6 each of two superimposed double scissors exist.
  • the pressure piston 52 is between the fixed joint 515 on the middle shell 2 and the Fixed joint 511 arranged on the side shell 31.
  • the stroke of the Pressure piston 52 doubled by the double scissors 51.
  • the Pressure piston 52 can, however, instead of the above Arrangement also between the joint 515 and the joint 513 be arranged. Basically, however, there is also Possibility of the pressure piston 52 between the joints 515, 516 to arrange a pair of joints.
  • the pressure piston 52 is double-acting, i.e. he practices his Pressure in both directions, so that the side shells 31, 32 not only under the force of the pressure piston 52 extended but also retracted.
  • Double scissors 51 there are other systems for operating the Double scissors 51 possible. These can be: pneumatic Pressure piston and electric drive through a rotating spindle.
  • Figures 6A, 6B show the double scissors system 6 in retracted state ( Figure 6A) and in the extended State ( Figure 6B).
  • the double scissors system 6 is correct its structure with the double scissors system 5.
  • this scissor system consists of double scissors 61 and a preferably hydraulic pressure piston 62.
  • the two pressure pistons 52, 62 are in the Drawings not shown hydraulic flow dividers or synchronous cylinder with the hydraulic system of the backhoe connected.
  • the hydraulic flow divider ensures that the two volume flows of the hydraulics regardless of the respective Back pressure on the two cylinders 52, 62 evenly be distributed. This will tilt the Side shells 31, 32 prevented from the middle shell 2.
  • the side shell 31 comprises the middle shell 2 on the inside with the shell part 311 and on the outside partly with the shell parts 312, 313.
  • the middle shell 2 In the middle is the middle shell 2 with a stiffening rib 21 braced by two Triangular gusset plates 22, 23 connected to the receptacle 4 are. There is one in each triangular gusset 22, 23 Mounting opening 221, 231 for mounting the Double scissors system 5.
  • the receptacle 4 with which the backhoe bucket 1 on the boom head the backhoe is attached is known per se and need not be described.
  • the backhoe bucket 1 consists of individual assemblies, for example the middle shell 2, the two side shells 31, 32 and the scissor systems 5, 6. These assemblies can be packaged and shipped in the disassembled state and at Receiver can be assembled with what is numerous Advantages.
  • the double scissors system 7 consists of two on both sides Swing arms 71, 72; 73, 74. Because the four swivel arms are constructed identically and also work identically only the swivel arm 71 is described below. This one has two pivotable joints 711, 712 and a bolt 713, the is guided in an arcuate template 714.
  • the pivotable joints 711, 721 (FIG. 7B) are at one Connection piece 75 is mounted to which a pressure motor 76 ( Figure 7) attacks. As can be seen from Figure 7, work the two printing motors 76, 86 opposed. they are switched as shown in Figure 9 and therefore need no hydraulic flow divider.
  • the side parts 31, 32 are extended in the double scissors system 7 when the Pressure piston 761 extends from the pressure motor 76 while the double scissors system 8 is installed so that the Side parts 31, 32 when the pressure piston 861 retracts Extend pressure motor 86.

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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)
  • Load-Engaging Elements For Cranes (AREA)
  • Operation Control Of Excavators (AREA)
  • Earth Drilling (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

PCT No. PCT/EP96/01355 Sec. 371 Date Dec. 1, 1997 Sec. 102(e) Date Dec. 1, 1997 PCT Filed Mar. 28, 1996 PCT Pub. No. WO96/30598 PCT Pub. Date Oct. 3, 1996A deep bucket (1) for exchangeable mounting at the jib head of a bucket excavator consists of three shells (2, 31, 32), which are movable relative to each other and constrainedly guided towards each other. The width of the deep bucket (1) is steplessly adjustable between a minimum value and a maximum value. At least two double scissors systems (5, 6; 7, 8) are provided for the actuation and for the parallel constrained guidance of the side shells (31, 32) in each adjusted spacing.

Description

Die Erfindung betrifft einen Tieflöffel gemäß dem Oberbegriff des Anspruchs 1. Ein derartiger Tieflöffel ist aus der EP 0 435 796 (Suau) bekannt.The invention relates to a bucket according to the preamble of claim 1. Such a backhoe is from the EP 0 435 796 (Suau) known.

Beim Einsatz von Löffelbaggern ergibt sich oft die Notwendigkeit, Tieflöffel verschiedener Arbeitsbreiten einsetzen zu müssen. Dieses bedeutet sowohl einen Verlust an Arbeitszeit, die für den Wechsel benötigt wird, als auch Schwierigkeiten in Bezug auf die Anzahl der Tieflöffel, die hierfür in Reserve gehalten werden müssen. Die zusätzlichen Tieflöffel müssem auch herantransportiert und gelagert werden. Sie müssen auch mit beträchtlicher Sorgfalt behandelt werden, um eine Verschmutzung der Aufnahme und der Hydraulikleitungen zu verhindern. Zusätzliche Tieflöffel sind auch nur in bestimmten Breiten vorhanden, so daß oft die Notwendigkeit besteht, sich für einen bestimmten, in seiner Breite jedoch nicht optimalen Tieflöffel entscheiden zu müssen. Dieses sind beträchtliche Nachteile des Wechselsystems. This often results when using backhoe excavators Need buckets of different working widths to have to use. This means both a loss of working time required for the change as also difficulties with the number of buckets, which must be kept in reserve for this. The additional bucket must also be transported and be stored. You also need to take considerable care to be treated to record and pollution to prevent the hydraulic lines. Additional bucket are only available in certain widths, so often there is a need to look for a particular, in deciding the width of the bucket, which is not optimal to have to. These are considerable disadvantages of the Changing system.

Aus der EP 0 435 796 (Suau) ist ein Tieflöffel für die auswechselbare Montage am Auslegerkopf eines Löffelbaggers bekannt, wobei der Tieflöffel aus mindestens zwei zueinander verfahrbaren und gegeneinander zwangsgeführten Schalen besteht und die Breite des Tieflöffels zwischen einem Minimalwert und einem Maximalwert stufenlos verstellbar ist. Die Zwangsführung erfolgt bei diesem Tieflöffel durch zueinander komplementäre Profile, nämlich einem Schwalbenschwanzprofil und einem T-Profil. Derartigen Zwangs führungen, die auf ineinandergreifenden Profilen beruhen, haftet der schwerwiegende Nachteil an, daß die Zwangsführungskraft mit zunehmenden Verstellabstand der Schalen sehr viel kleiner wird und die Gefahr eines gegenseitigen Verkantens der Schalen wächst. Darf jedoch ein Mindestmaß an Zwangsführungskraft nicht unterschritten werden, dann ist die maximal mögliche Verbreiterung des Tieflöffels bzw. die Verstellbarkeit der Seitenteile zu gering, um für den praktischen Einsatz zufriedenstellend zu sein. Denn nur ein Tieflöffel, der einen großen Breitenbereich überdeckt bringt im praktischen Einsatz die gewünschten Vorteile.From EP 0 435 796 (Suau) is a backhoe for the exchangeable assembly on the boom head of a backhoe known, the backhoe from at least two to each other movable and positively guided shells exists and the width of the bucket between one Minimum value and a maximum value is continuously adjustable. The forced guidance takes place with this backhoe complementary profiles, namely one Dovetail profile and a T-profile. Such Forced guides on interlocking profiles are based, the serious disadvantage that the Coercive force with increasing adjustment distance of the Shells becomes much smaller and the danger of one mutual tilting of the shells grows. However, may a minimum level of compulsory leadership was not undershot then the maximum possible broadening of the Bucket or the adjustability of the side parts too low to be satisfactory for practical use to be. Because only a backhoe that is big Covered width range brings in practical use desired benefits.

Der Erfindung liegt daher die Aufgabe zugrunde, einen stufenlos verstellbaren Tieflöffel zu schaffen, bei dem die Kraft der Zwangsführung der Löffelteile gegeneinander nur im geringen Maße abnimmt und die Parallelführung der Löffelteile zueinander gewährleistet ist.The invention is therefore based on the object to create infinitely adjustable bucket where the Force of the forced guidance of the spoon parts against each other only decreases to a small extent and the parallel guidance of the Spoon parts to each other is guaranteed.

Diese Aufgabe ist nach der Erfindung dadurch gelöst, daß der gattungsgemäße Tieflöffel auch nach dem Kennzeichnungsteil des Anspruchs 1 ausgelegt ist.This object is achieved according to the invention in that the generic backhoe also after Labeling part of claim 1 is designed.

In den Unteransprüchen werden Ausgestaltungen und Fortbildungen der Erfindung beansprucht. Refinements and Developments of the invention claimed.

In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung wiedergegeben. Es zeigen :

Fig. 1
eine schematische Seitenansicht des Tieflöffels eines Tieflöffelbaggers,
Fig. 2A
eine Ansicht des Tieflöffels aus Richtung des Pfeiles II von Figur 1 im zusammengefahrenen Zustand,
Fig. 2B wie Figur 2A,
jedoch im auseinandergefahrenen Zustand,
Fig. 3
eine Ansicht des Tieflöffels nach der Schnittlinie III - III von Figur 2A,
Fig. 4
eine Ansicht des Tieflöffels aus Richtung der Schnittlinie IV - IV von Figur 3,
Fig. 5A
eine Ansicht des Tieflöffels aus Richtung des Pfeiles V von Figur 3 mit einem herausgebrochenen Wandteil und mit zusammengefahrener Schere,
Fig. 5B wie Figur 5A,
jedoch mit auseinandergefahrener Schere,
Fig. 6A
eine Ansicht des Tieflöffels aus Richtung des Pfeiles VI von Figur 3 mit einem herausgebrochenen Wandteil und mit zusammengefahrener Schere und
Fig. 6B wie Figur 6A,
jedoch mit auseinandergefahrener Schere.
Fig. 7
einen schematischen Schnitt durch den Tieflöffel wie Figur 3 mit einem zweiten Scherensystem,
Fig. 7A
das zweite Scherensystem im zusammengefahrenen Zustand,
Fig. 7B
das zweite Scherensystem im auseinandergefahrenen Zustand,
Fig. 8A
das erste Scherensystem mit geänderter Montage des Druckmotors im zusammengefahrenen Zustand,
Fig. 8B
das Scherensystem nach Figur 8A im auseinandergefahrenen Zustand und
Fig. 9
das Drucksystem für die Druckmotoren nach den Figuren 7 bis 8B.
In the drawings, an embodiment of the invention is shown. Show it :
Fig. 1
a schematic side view of the backhoe of a backhoe,
Figure 2A
2 shows a view of the bucket from the direction of arrow II of FIG. 1 in the closed state,
2B like Figure 2A,
but in the spread apart state,
Fig. 3
3 shows a view of the bucket along the section line III-III of FIG. 2A,
Fig. 4
3 shows a view of the bucket from the direction of section line IV - IV in FIG. 3,
Figure 5A
3 shows a view of the bucket from the direction of arrow V of FIG. 3 with a wall part broken out and with scissors moved together
5B like FIG. 5A,
but with the scissors apart,
Figure 6A
a view of the bucket from the direction of arrow VI of Figure 3 with a broken-out wall part and with scissors and
6B like FIG. 6A,
but with the scissors apart.
Fig. 7
3 shows a schematic section through the backhoe bucket as in FIG. 3 with a second scissor system,
Figure 7A
the second scissor system in the collapsed state,
Figure 7B
the second scissor system in the extended state,
Figure 8A
the first scissor system with modified assembly of the pressure motor in the closed state,
Figure 8B
the scissors system according to Figure 8A in the extended state and
Fig. 9
the printing system for the printing motors according to Figures 7 to 8B.

Der Tieflöffel 1 für die auswechselbare Montage am Auslegerkopf eines nicht dargestellten Löffelbaggers ist in seiner Breite zwischen einem Minimalwert bl (Figur 2A) und einem Maximalwert b2 (Figur 2B) stufenlos verstellbar. Der Tieflöffel 1 besteht aus einer feststehenden zentralen Mittelschale 2 und zwei zur Mittelschale 2 ausfahrbaren und zueinander spiegelsymmetrischen Seitenschalen 31, 32. Die Ausfahrbewegung der Seitenschalen 31, 32 ist an der Mittelschale 2 zwangsgeführt, wobei die Zwangsführung vorzugsweise aus mindestens zwei Doppelscheren 5, 6 besteht.Backhoe 1 for interchangeable assembly on Boom head of a backhoe, not shown, is in its width between a minimum value bl (Figure 2A) and a maximum value b2 (Figure 2B) continuously adjustable. Of the Backhoe 1 consists of a fixed central Middle shell 2 and two extendable to the middle shell 2 and mutually mirror-symmetrical side shells 31, 32. The extension movement of the side shells 31, 32 is on the Middle shell 2 positively guided, the positive guidance preferably consists of at least two double scissors 5, 6.

Die Figuren 5A, 5B zeigen das Doppelscherensystem 5 im eingefahrenen Zustand (Figur 5A) und im ausgefahrenen Zustand (Figur 5B). Das Doppelscherensystem 5 besteht aus einer Doppelschere 51 und einem vorzugsweise hydraulischen Druckkolben 52 zum Ein- und Ausfahren der Doppelschere 51. Von der Doppelschere 51 ist das äußere Gelenkpaar 511, 512 an der seitenschale 31, das äußere Gelenkpaar 513, 514 an der Seitenschale 32 und das mittlere Gelenkpaar 515, 516 an der Mittelschale 2 zwangsgeführt. Die Zwangsführung erfolgt in der Weise, daß die Gelenke 511, 513, 515 ortsfest und schwenkbar gelagert sind, während die Gelenke 512, 514, 516 schwenkbar jeweils an einem Gleitkörper 53 gelagert sind, der seinerseits in einer Schiene 54 verschiebbar ist. Durch diese Zwangsführung erfolgt eine absolut parallele übertragung der Druckkräfte des Druckkolbens 52.Figures 5A, 5B show the double scissors system 5 in retracted state (Figure 5A) and in the extended State (Figure 5B). The double scissors system 5 consists of a double scissors 51 and a preferably hydraulic Pressure piston 52 for retracting and extending the double scissors 51. The outer pair of joints 511, 512 is of the double scissors 51 on the side shell 31, the outer pair of joints 513, 514 the side shell 32 and the middle pair of joints 515, 516 the middle shell 2 positively guided. The forced operation takes place in such a way that the joints 511, 513, 515 are stationary and are pivotally mounted, while the joints 512, 514, 516 are each pivotably mounted on a sliding body 53, which in turn is displaceable in a rail 54. By this forced operation is absolutely parallel Transmission of the pressure forces of the pressure piston 52.

Um keine Biegemomente auf die Gelenkbolzen entstehen zu lassen, besteht das Doppelscherensystem 5 aus zwei übereinanderliegenden Doppelscheren. Die Arme dieser Doppelscheren greifen abwechselnd an die Seitenschalen 31, 32 an. Abwechselnd bedeutet, daß der erste und dritte Arm an die Seitenschale 31 und der zweite und vierte Arm an die Seitenschale 32 angreift. In Figur 3 ist ersichtlich, daß beide Doppelscherensysteme 5, 6 aus jeweils zwei übereinanderliegenden Doppelscheren bestehen. In order to avoid bending moments on the hinge pins leave, the double scissors system 5 consists of two superimposed double scissors. The arms of this Double scissors alternately grip the side shells 31, 32 on. Alternating means that the first and third arm to the side shell 31 and the second and fourth arms to the Side shell 32 attacks. In Figure 3 it can be seen that both double shear systems 5, 6 each of two superimposed double scissors exist.

In den Figuren 5A, 5B ist der Druckkolben 52 zwischen dem ortsfesten Gelenk 515 an der Mittelschale 2 und dem ortsfesten Gelenk 511 an der seitenschale 31 angeordnet. Durch diese Anordnung des Druckkolbens 52 wird der Hub des Druckkolbens 52 durch die Doppelschere 51 verdoppelt. Der Druckkolben 52 kann jedoch an Stelle der vorbeschriebenen Anordnung auch zwischen dem Gelenk 515 und dem Gelenk 513 angeordnet sein. Grundsätzlich besteht jedoch auch die Möglichkeit, den Druckkolben 52 zwischen den Gelenken 515, 516 eines Gelenkpaares anzuordnen.In Figures 5A, 5B, the pressure piston 52 is between the fixed joint 515 on the middle shell 2 and the Fixed joint 511 arranged on the side shell 31. By this arrangement of the pressure piston 52, the stroke of the Pressure piston 52 doubled by the double scissors 51. Of the Pressure piston 52 can, however, instead of the above Arrangement also between the joint 515 and the joint 513 be arranged. Basically, however, there is also Possibility of the pressure piston 52 between the joints 515, 516 to arrange a pair of joints.

Der Druckkolben 52 ist doppelwirkend, d.h. er übt seine Druckkraft in beiden Richtungen aus, so daß die Seitenschalen 31, 32 unter der Kraft des Druckkolbens 52 nicht nur ausgefahren sondern auch eingefahren werden.The pressure piston 52 is double-acting, i.e. he practices his Pressure in both directions, so that the side shells 31, 32 not only under the force of the pressure piston 52 extended but also retracted.

Es sind jedoch auch andere Systeme zur Betätigung der Doppelschere 51 möglich. Diese können sein : pneumatischer Druckkolben und elektrischer Antrieb durch eine Drehspindel.However, there are other systems for operating the Double scissors 51 possible. These can be: pneumatic Pressure piston and electric drive through a rotating spindle.

Die Figuren 6A, 6B zeigen das Doppelscherensystem 6 im eingefahrenen Zustand (Figur 6A) und im ausgefahrenen Zustand (Figur 6B). Das Doppelscherensystem 6 stimmt in seinem Aufbau mit dem Doppelscherensystem 5 überein. Auch dieses Scherensystem besteht aus einer Doppelschere 61 und einem vorzugsweise hYdraulischen Druckkolben 62.Figures 6A, 6B show the double scissors system 6 in retracted state (Figure 6A) and in the extended State (Figure 6B). The double scissors system 6 is correct its structure with the double scissors system 5. Also this scissor system consists of double scissors 61 and a preferably hydraulic pressure piston 62.

Die beiden Druckkolben 52, 62 sind über einen in den Zeichnungen nicht dargestellten hydraulischen Stromteiler oder Gleichlaufzylinder mit der Hydraulik des Löffelbaggers verbunden. Der hydraulische Stromteiler sorgt dafür, daß die beiden Volumenströme der Hydraulik unabhängig vom jeweiligen Gegendruck auf die beiden Zylinder 52, 62 gleichmäßig verteilt werden. Hierdurch wird ein Verkanten der Seitenschalen 31, 32 gegenüber der Mittelschale 2 verhindert. The two pressure pistons 52, 62 are in the Drawings not shown hydraulic flow dividers or synchronous cylinder with the hydraulic system of the backhoe connected. The hydraulic flow divider ensures that the two volume flows of the hydraulics regardless of the respective Back pressure on the two cylinders 52, 62 evenly be distributed. This will tilt the Side shells 31, 32 prevented from the middle shell 2.

Wie aus Figur 3 zu ersehen ist, umfaßt die Seitenschale 31 die Mittelschale 2 auf der Innenseite mit dem Schalenteil 311 und auf der Außenseite teilweise mit den Schalenteilen 312, 313. Entsprechendes gilt für die Seitenschale 32. In der Mitte ist die Mittelschale 2 mit einer Aussteifungsrippe 21 ausgesteift, die ihrerseits durch zwei Dreiecksknotenbleche 22, 23 mit der Aufnahme 4 verbunden sind. In jedem Dreiecksknotenblech 22, 23 befindet sich eine Montageöffnung 221, 231 für die Montage des Doppelscherensystems 5.As can be seen from FIG. 3, the side shell 31 comprises the middle shell 2 on the inside with the shell part 311 and on the outside partly with the shell parts 312, 313. The same applies to the side shell 32. In the middle is the middle shell 2 with a stiffening rib 21 braced by two Triangular gusset plates 22, 23 connected to the receptacle 4 are. There is one in each triangular gusset 22, 23 Mounting opening 221, 231 for mounting the Double scissors system 5.

Die Aufnahme 4, mit der der Tieflöffel 1 am Auslegerkopf des Löffelbaggers befestigt wird, ist an sich bekannt und braucht nicht beschrieben zu werden.The receptacle 4 with which the backhoe bucket 1 on the boom head the backhoe is attached, is known per se and need not be described.

Der Tieflöffel 1 besteht aus einzelnen Baugruppen, beispielsweise der Mittelschale 2, den beiden Seitenschalen 31, 32 sowie den Scherensystemen 5, 6. Diese Baugruppen können im demontierten Zustand verpackt und versandt und beim Empfänger zusammengebaut werden, was mit zahlreichen Vorteilen verbunden ist.The backhoe bucket 1 consists of individual assemblies, for example the middle shell 2, the two side shells 31, 32 and the scissor systems 5, 6. These assemblies can be packaged and shipped in the disassembled state and at Receiver can be assembled with what is numerous Advantages.

In Figur 7 ist wie in Figur 3 ein Schnitt durch einen Tieflöffel mit zwei Doppelscherensystemen 7, 8 dargestellt. Beide Scherensysteme 7, 8 sind identisch, so daß nachfolgend nur das Doppelscherensystem 7 in den Figuren 7A, 7B beschrieben wird.In Figure 7, as in Figure 3 is a section through a Backhoe with two double shear systems 7, 8 shown. Both scissor systems 7, 8 are identical, so that below only the double scissors system 7 in FIGS. 7A, 7B is described.

Das Doppelscherensystem 7 besteht zu beiden Seiten aus zwei Schwenkarmen 71, 72; 73, 74. Da die vier Schwenkarme identisch aufgebaut sind und auch identisch arbeiten, wird nachfolgend nur der Schwenkarm 71 beschrieben. Dieser hat zwei schwenkbare Gelenke 711, 712 und einen Bolzen 713, der in einer kreisbogenförmigen Schablone 714 geführt wird. Die schwenkbaren Gelenke 711, 721 (Figur 7B) sind an einem Verbindungsstück 75 gelagert, an das ein Druckmotor 76 (Figur 7) angreift. Wie aus Figur 7 zu ersehen ist, arbeiten die beiden Druckmotoren 76, 86 entgegengesetzt. Sie sind wie in Figur 9 dargestellt geschaltet und benötigen daher keinen hydraulischen Stromteiler. Die Seitenteile 31, 32 werden bei dem Doppelscherensystem 7 ausgefahren, wenn der Druckkolben 761 aus dem Druckmotor 76 ausfährt, während das Doppelscherensystem 8 so eingebaut ist, daß die Seitenteile 31, 32 bei einfahrendem Druckkolben 861 des Druckmotors 86 ausfahren.The double scissors system 7 consists of two on both sides Swing arms 71, 72; 73, 74. Because the four swivel arms are constructed identically and also work identically only the swivel arm 71 is described below. This one has two pivotable joints 711, 712 and a bolt 713, the is guided in an arcuate template 714. The pivotable joints 711, 721 (FIG. 7B) are at one Connection piece 75 is mounted to which a pressure motor 76 (Figure 7) attacks. As can be seen from Figure 7, work the two printing motors 76, 86 opposed. they are switched as shown in Figure 9 and therefore need no hydraulic flow divider. The side parts 31, 32 are extended in the double scissors system 7 when the Pressure piston 761 extends from the pressure motor 76 while the double scissors system 8 is installed so that the Side parts 31, 32 when the pressure piston 861 retracts Extend pressure motor 86.

Dieses völlig synchrone Arbeiten der Druckmotoren 7, 8 wird in einfacher Weise dadurch erreicht, daß nach Figur 9 die Druckräume 762, 862 durch eine Druckleitung 91 miteinander verbunden sind. Da es sich um doppelwirkende Druckmotoren handelt, kann jede der beiden Leitungen 92, 93 sowohl eine Zu- als auch eine Ableitung für das Druckmedium sein.This completely synchronous operation of the pressure motors 7, 8 is achieved in a simple manner that according to FIG Pressure spaces 762, 862 through a pressure line 91 to one another are connected. Since it is double-acting pressure motors acts, each of the two lines 92, 93 can be both one To be as well as a derivative for the pressure medium.

Das Gleiche gilt für das Doppelscherensystem 8 nach den Figuren 8A, 8B. The same applies to the double scissors system 8 according to the Figures 8A, 8B.

BezugszeichenlisteReference list

11
TieflöffelBackhoe
22nd
MittelschaleMiddle shell
2121
AussteifungsrippeStiffening rib
2222
KnotenblechGusset plate
221221
MontageöffnungAssembly opening
2323
KnotenblechGusset plate
231231
MontageöffnungAssembly opening
3131
SeitenschaleSide shell
311311
inneres Schalenteilinner shell part
312312
äußeres Schalenteilouter shell part
313313
äußeres Schalenteilouter shell part
3232
SeitenschaleSide shell
44th
Aufnahmeadmission
55
DoppelscherensystemDouble scissors system
5151
DoppelschereDouble scissors
511511
ortsfestes Gelenkfixed joint
513513
ortsfestes Gelenkfixed joint
515515
ortsfestes Gelenkfixed joint
512512
verschiebbares Gelenksliding joint
514514
verschiebbares Gelenksliding joint
516516
verschiebbares Gelenksliding joint
5252
DruckkolbenPressure piston
5353
GleitkörperSliding body
5454
Schienerail
66
DoppelscherensystemDouble scissors system
6161
DoppelschereDouble scissors
6262
DruckkolbenPressure piston
77
DoppelscherensystemDouble scissors system
7171
SchwenkarmSwivel arm
711711
schwenkbares Gelenkswivel joint
712712
schwenkbares Gelenk swivel joint
713713
Bolzenbolt
714714
Schablonetemplate
7272
SchwenkarmSwivel arm
721721
schwenkbares Gelenkswivel joint
7373
SchwenkarmSwivel arm
7474
SchwenkarmSwivel arm
7575
VerbindungsstückConnector
7676
DruckmotorPressure motor
761761
DruckkolbenPressure piston
762762
DruckraumPressure room
88th
DoppelscherensystemDouble scissors system
8686
DruckmotorPressure motor
861861
DruckkolbenPressure piston
862862
DruckraumPressure room
9191
DruckleitungPressure line
9292
Leitungmanagement
9393
Leitungmanagement

Claims (11)

  1. Deep bucket for exchangeable mounting at the jib head of a bucket excavator, wherein the deep bucket consists of at least two pans, which are movable relative to one another and constrainedly guided towards each other, and the width of the deep bucket is steplessly adjustable between a minimum value and a maximum value, characterised by at least two double scissors systems (5, 6; 7, 8) for actuation and parallel constrained guidance of the side pans (31, 32) in every adjusted spacing.
  2. Deep bucket according to claim 1, characterised in that the deep bucket (1) consists of a central middle pan (2) and two side pans (31, 32), which are in mirror symmetry to one another and extendable relative to the middle pan (2).
  3. Deep bucket according to claim 1 or 2, characterised in that an outer hinge pair (511, 512; 513, 514) are each constrainedly guided at a respective side pan (31, 32) and the common metal hinge pair (515, 516) is contrainedly guided at the middle pan (2) each time by the double scissors (51).
  4. Deep bucket according to one of claims 1 to 3, characterised by at least one hydraulic pressure motor (52, 62) for inward and outward movement of the double scissors.
  5. Deep bucket according to claim 4, characterised in that the pressure piston (52, 62) is arranged between the fixedly located hinge (516) at the middle pan (2) and a respective fixedly located hinge (512, 514) of a side pan (31, 32).
  6. Deep bucket according to claim 4, characterised in that the pressure piston (52, 62) is arranged between the hinged pair (515, 516) at the middle pan (2) (Figs 7A to 8A).
  7. Deep bucket according to one of claims 1 to 6, characterised in that the constrained guidance of the double scissors (51) consists of three fixedly located hinges (511, 513, 515) and three hinges (512, 514, 516) each sliding in a respective rail (54).
  8. Deep bucket according to one of claims 1 to 7, characterised by a stiffening rib (21) extending centrally and in longitudinal direction in the middle pan (2).
  9. Deep bucket according to one of claims 1 to 8, characterised by a cassette stiffening (21, 22, 23) of the middle part (2).
  10. Deep bucket according to one of claims 1 to 9, characterised by two triangular gusset plates (22, 23) at the stiffening plate (21) for absorption of tension and compression loads.
  11. Deep bucket according to one of claims 1 to 10, characterised in that the deep bucket (1) consists of modular units.
EP96909139A 1995-03-30 1996-03-28 Bucket for a mechanical excavator Expired - Lifetime EP0817891B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19511617 1995-03-30
DE19511617A DE19511617C2 (en) 1995-03-30 1995-03-30 Backhoe bucket for a backhoe
PCT/EP1996/001355 WO1996030598A1 (en) 1995-03-30 1996-03-28 Bucket for a mechanical excavator

Publications (2)

Publication Number Publication Date
EP0817891A1 EP0817891A1 (en) 1998-01-14
EP0817891B1 true EP0817891B1 (en) 1999-08-11

Family

ID=7758117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96909139A Expired - Lifetime EP0817891B1 (en) 1995-03-30 1996-03-28 Bucket for a mechanical excavator

Country Status (10)

Country Link
US (1) US5918390A (en)
EP (1) EP0817891B1 (en)
JP (1) JP2994044B2 (en)
KR (1) KR19980703319A (en)
AT (1) ATE183271T1 (en)
CA (1) CA2216831A1 (en)
DE (2) DE19511617C2 (en)
ES (1) ES2138328T3 (en)
MX (1) MX9707418A (en)
WO (1) WO1996030598A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2341843A (en) * 1998-09-24 2000-03-29 John Edward Mansfield Variable width excavation bucket
ITGE20030015A1 (en) * 2003-02-25 2004-08-26 Gianluca Malacrino ADJUSTABLE CAPACITY BUCKET OR SHOVEL
US6994513B2 (en) * 2003-11-04 2006-02-07 Richard Harris Variable width backhoe bucket
GB2410239B (en) * 2004-01-21 2006-12-13 Brian Mence Adjustable width excavator bucket
ES2241490B2 (en) * 2004-04-06 2007-02-16 Proyectos Y Tecnologia Sallen, S.L. SELF-PROPROVED ROBOT FOR EXPLOSIVE LOAD HANDLING.
KR101015366B1 (en) * 2009-03-27 2011-02-16 김진용 Loader's Dual Bucket for High Dump
BE1020609A5 (en) * 2012-12-17 2014-01-07 Groenservice Marissen Nv DEVICE FOR DEEPING A CANAL.
GB2541751A (en) * 2015-08-31 2017-03-01 Anthony Furlong Patrick Hydraulic variable extending digger bucket
WO2018141021A1 (en) * 2017-02-02 2018-08-09 Excavator Innovations Pty Ltd A bucket for earthmoving machines

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034237A (en) * 1956-03-26 1962-05-15 Superior Separator Company Multi-function attachments carrier for farm loaders and the like
US3782573A (en) * 1971-05-28 1974-01-01 Nat Oats Co Inc Bucket for use on a loader, tractor or the like
US3805422A (en) * 1972-12-21 1974-04-23 Caterpillar Tractor Co Adjustable sidecutter for excavator buckets and the like
DE2409027C3 (en) * 1974-02-25 1979-08-02 Kiener Und Borst Ohg, 7322 Schloss Ramsberg Dozer blade
US4208814A (en) * 1978-08-11 1980-06-24 Richard Stone Backhoe bucket extension device
US4691455A (en) * 1985-09-20 1987-09-08 Newman Russell L Trenching equipment with hinged side plates
DE8804501U1 (en) * 1988-04-06 1988-06-23 Mäckl, Johann, 8416 Hemau Excavator bucket
FR2656640B1 (en) * 1989-12-29 1992-07-17 Suau Eric BUCKET FOR EARTHMOVING MACHINES OF ADJUSTABLE WIDTH.

Also Published As

Publication number Publication date
MX9707418A (en) 1997-12-31
KR19980703319A (en) 1998-10-15
CA2216831A1 (en) 1996-10-03
DE19511617C2 (en) 1998-12-10
DE19511617A1 (en) 1996-10-10
DE59602719D1 (en) 1999-09-16
US5918390A (en) 1999-07-06
JP2994044B2 (en) 1999-12-27
JPH10506447A (en) 1998-06-23
EP0817891A1 (en) 1998-01-14
WO1996030598A1 (en) 1996-10-03
ATE183271T1 (en) 1999-08-15
ES2138328T3 (en) 2000-01-01

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