EP0333066A1 - Engin de terrassement, notamment un chargeur - Google Patents

Engin de terrassement, notamment un chargeur Download PDF

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Publication number
EP0333066A1
EP0333066A1 EP89104284A EP89104284A EP0333066A1 EP 0333066 A1 EP0333066 A1 EP 0333066A1 EP 89104284 A EP89104284 A EP 89104284A EP 89104284 A EP89104284 A EP 89104284A EP 0333066 A1 EP0333066 A1 EP 0333066A1
Authority
EP
European Patent Office
Prior art keywords
lifting arm
quick
cylinder
shovel loader
articulated
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.)
Granted
Application number
EP89104284A
Other languages
German (de)
English (en)
Other versions
EP0333066B1 (fr
Inventor
Karl Friedrich
Dieter Maly
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.)
Kramer Werke GmbH
Original Assignee
Kramer Werke GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6349588&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0333066(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kramer Werke GmbH filed Critical Kramer Werke GmbH
Publication of EP0333066A1 publication Critical patent/EP0333066A1/fr
Application granted granted Critical
Publication of EP0333066B1 publication Critical patent/EP0333066B1/fr
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
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures
    • 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
    • E02F3/283—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 single arm pivoted directly on the chassis
    • 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
    • E02F3/34—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 bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3405—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 bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines and comprising an additional linkage mechanism
    • 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
    • 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
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • E02F9/024—Travelling-gear, e.g. associated with slewing gears with laterally or vertically adjustable wheels or tracks

Definitions

  • the invention relates to a work vehicle, in particular a shovel loader with a loading system arranged centrally on the front section, on the lifting arm of which a lifting cylinder supported on the front section, a rocker arm and a quick-change device are articulated at the front end, which are articulated via a rocker arm with the rocker arm which can be actuated by a rocker cylinder connected is.
  • Bucket loaders of this type have been known for a long time. They have steerable rear wheels, but non-steerable front wheels to ensure stability when working.
  • Chargers are also known (DE-A 16 58 038) which have a charging device articulated in the center of the vehicle between the front and rear wheels, the driver's cab being arranged on one side next to the charging device. With such chargers, both the driver's view of the work area and the all-round view are restricted.
  • the invention has for its object the maneuverability of generic work vehicles to increase, the sub-task of the loading system in a generic work vehicle being designed in such a way that it tolerates steerable front wheels with a steering angle of over 40 ° without the tilting stability of the vehicle about its transverse axis being impaired by the external forces introduced via the loading system.
  • this object is achieved on a device of the type mentioned at the outset by that the vehicle-side end of the lifting arm engages in a channel-like recess of the front section which is open towards the front, that the tilt cylinder is also articulated on the front section, that the lifting arm is designed as a narrow component and, seen from above, there is space for the quick-change device in the maximum lowered position between the front wheels, such that, seen from the side, only the quick-change device projects slightly downwards over the space between the wheels and that the front wheels are steerable.
  • the construction according to the invention allows the driver's cab to be arranged relatively far forward, ie close to the work area and in the center with respect to the longitudinal axis of the vehicle, thereby making it easier to operate the work vehicle.
  • the lifting arm is designed in accordance with the invention in such a way that even in the case of front wheels with a large steering angle there is space in the wheel space, even if it is lowered to the maximum. In this position, the loading shovel is located directly in front of the front wheels, which improves the tipping stability under load or enables the counterweights to be dimensioned lower.
  • the deep arrangement of the lifting arm also gives the driver an optimal view of the work area and a clear view of the lifting work.
  • the cylinder and tilt cylinder are articulated below the lifting arm on the front part and that the lifting arm has projecting lateral profile legs on the vehicle side, so that it covers both cylinders towards the front.
  • This measure results in a particularly protected arrangement of the Hydraulic cylinder opposite the work item.
  • the box cross section for the lifting arm is preferably a box profile, on which the profile legs are attached laterally, or a U profile; this protected arrangement of the hydraulic cylinders can be further improved in that at least the tilt cylinder partially enters the interior of the lifting arm.
  • the two cylinders can also be arranged pivotably within closely adjacent planes.
  • the quick-change device is particularly simple. It has two laterally projecting connection bolts on each connection side, namely an upper locating bolt for the bucket hook and a lower hydraulically axially retractable locking bolt.
  • the simplification compared to known quick-change devices is that the locking bolts are each axially displaceably arranged in a central bore of a lateral bearing pin of the lifting arm and that the bearing pins are pivotally received in corresponding bushings of the quick-change device.
  • a shovel loader shown schematically in FIG. 1 has a loading system 3 arranged centrally on the front part 1 of its frame 2.
  • the loading system 3 comprises a lifting arm 4 which is articulated in the interior of a channel-like recess 6 of the front part 1 so that it can pivot about the horizontal axis 5 .
  • a quick-change device 7 shown in FIG. 2 in the plan view, is fastened with laterally projecting receiving bolts 8 for the bucket hook. 2
  • the steerable front wheels 9 of the shovel loader are drawn in the straight-ahead position.
  • the right front wheel is shown with a dashed line 10 and the left front wheel with a dotted line 11, each in the position with extreme steering lock.
  • FIG. 1 shows that the two cylinders are articulated below the pivot axis 5 of the lifting arm 4 inside the recess 6 of the front section 1 of the shovel loader. From the sectional view through the loading device shown in FIG. 3 it can be seen that the two cylinders can be moved in closely adjacent planes behind the lifting arm 4; they partially engage between the lateral profile legs 38, which protrude beyond the rear wall 39 of the lifting arm 4, which is box-shaped in cross section.
  • the lower end of the lifting cylinder 14 is articulated with its lower end on a holding bracket 15 on the rear wall 39 of the lifting arm 4.
  • the lower end of the tilt cylinder 13 is articulated on the lower end 16 of a rocker arm 17, which around a center axis 18 mounted in the lifting arm 4 can be pivoted.
  • the upper end 19 of the rocker arm 17 is articulated to the upper end 20 of the quick-change device 7 via a tilt rod 21.
  • FIG. 4 shows a side view of the quick-change device 7 with the mounting bolts 8 arranged above for a shovel hook 22, which is provided on the rear of a loading shovel 23 indicated by a dash-dotted line.
  • the quick-change device has locking bolts 24 which can be extended and retracted hydraulically in the axial direction and which engage in corresponding bores of eyes 25 provided on the underside of the loading shovel.
  • the eyes 25 and the shovel hook 22 are formed on opposite webs 26 on the rear of the loading shovel 23.
  • the mounting bolts 8 for the bucket hook are formed by the ends of a continuous shaft 27 projecting on opposite sides of the quick-change device 7.
  • the shaft 27 is non-rotatable and axially immovable in a corresponding bore in the upper end 20 of the quick-change device 7 stored.
  • the pivot bearing 28 of the lower end of the tilt rod 21 is articulated in the middle of the shaft.
  • bearing bolts 30 are formed laterally, which pivotably engage in corresponding bushings 29 of the quick-change device 7.
  • the end piece of the lifting arm 4 has a central receiving bore 38 for the locking bolts 24 which, with their inner ends 31, adjoin a central pressure chamber 32 which can be acted upon by hydraulic medium.
  • Two further pressure chambers 33 are formed on the back of the piston parts 34 at the inner end of the locking bolts 24. If the pressure chamber 32 is pressurized via a central pressure line 35, the two locking bolts 24 extend; If the central space 32 is depressurized and the two outer pressure lines 36 are pressurized with pressure medium to the pressure spaces 33, both locking bolts 24 move in and thus release the eye 25 of the loading shovel 23.
  • a sealing element 37 which is firmly connected to the bearing bush, but can be removed, in the bore of which the section of the locking bolt 24 with a smaller diameter is guided, which enables it to be easily installed in the receiving bore 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Shovels (AREA)
EP89104284A 1988-03-12 1989-03-10 Engin de terrassement, notamment un chargeur Expired - Lifetime EP0333066B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3808313A DE3808313A1 (de) 1988-03-12 1988-03-12 Arbeitsfahrzeug, insbesondere schaufellader
DE3808313 1988-03-12

Publications (2)

Publication Number Publication Date
EP0333066A1 true EP0333066A1 (fr) 1989-09-20
EP0333066B1 EP0333066B1 (fr) 1992-06-10

Family

ID=6349588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104284A Expired - Lifetime EP0333066B1 (fr) 1988-03-12 1989-03-10 Engin de terrassement, notamment un chargeur

Country Status (3)

Country Link
EP (1) EP0333066B1 (fr)
JP (1) JPH01235731A (fr)
DE (2) DE3808313A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211078A1 (de) * 1992-04-03 1993-10-07 Orenstein & Koppel Ag Hubwerk für Arbeitsgeräte an Ladefahrzeugen
WO1995021969A1 (fr) * 1994-02-09 1995-08-17 Raunisto, Airi Ensemble de couplage rapide
DE102019117715A1 (de) 2018-06-29 2020-01-02 Liebherr-Werk Bischofshofen Gmbh Arbeitsmaschine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010224C2 (de) * 1990-03-30 1994-05-19 Porsche Ag Schnellwechselvorrichtung
DE4223734C2 (de) * 1992-07-18 1996-04-18 Orenstein & Koppel Ag Schnellwechselvorrichtung
DE19800164A1 (de) * 1998-01-05 1999-07-22 Orenstein & Koppel Ag Mobile Lademaschine mit Frontladeausrüstung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1482635A (fr) * 1966-03-03 1967-05-26 Bamford Excavators Ltd Perfectionnements apportés aux machines de terrassement
US3935953A (en) * 1974-06-24 1976-02-03 Caterpillar Tractor Co. Implement mounting means for earthworking vehicles
GB1522510A (en) * 1976-12-09 1978-08-23 Rmc Group Serv Ltd Working platforms and support means therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1200176A (en) * 1966-11-14 1970-07-29 Winget Ltd Improvements in or modifications of loaders
US3648871A (en) * 1970-02-19 1972-03-14 Layton Mfg Co Vehicle loader
DE3200800C2 (de) * 1982-01-13 1986-08-14 Kramer-Werke GmbH, 7770 Überlingen Schaufellader

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1482635A (fr) * 1966-03-03 1967-05-26 Bamford Excavators Ltd Perfectionnements apportés aux machines de terrassement
US3935953A (en) * 1974-06-24 1976-02-03 Caterpillar Tractor Co. Implement mounting means for earthworking vehicles
GB1522510A (en) * 1976-12-09 1978-08-23 Rmc Group Serv Ltd Working platforms and support means therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211078A1 (de) * 1992-04-03 1993-10-07 Orenstein & Koppel Ag Hubwerk für Arbeitsgeräte an Ladefahrzeugen
WO1995021969A1 (fr) * 1994-02-09 1995-08-17 Raunisto, Airi Ensemble de couplage rapide
US5802753A (en) * 1994-02-09 1998-09-08 Raunisto; Yrjoe Quick coupling assembly
DE102019117715A1 (de) 2018-06-29 2020-01-02 Liebherr-Werk Bischofshofen Gmbh Arbeitsmaschine

Also Published As

Publication number Publication date
DE58901618D1 (de) 1992-07-16
JPH01235731A (ja) 1989-09-20
EP0333066B1 (fr) 1992-06-10
DE3808313A1 (de) 1989-09-28
DE3808313C2 (fr) 1990-10-18

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