EP0524490B1 - Baggerlader - Google Patents

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Publication number
EP0524490B1
EP0524490B1 EP92111627A EP92111627A EP0524490B1 EP 0524490 B1 EP0524490 B1 EP 0524490B1 EP 92111627 A EP92111627 A EP 92111627A EP 92111627 A EP92111627 A EP 92111627A EP 0524490 B1 EP0524490 B1 EP 0524490B1
Authority
EP
European Patent Office
Prior art keywords
loader
frame
undercarriage
backhoe
rest
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
EP92111627A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0524490A1 (de
Inventor
Hans Schaeff
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.)
Karl Schaeff GmbH and Co Maschinenfabrik
Original Assignee
Karl Schaeff GmbH and Co Maschinenfabrik
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 Karl Schaeff GmbH and Co Maschinenfabrik filed Critical Karl Schaeff GmbH and Co Maschinenfabrik
Publication of EP0524490A1 publication Critical patent/EP0524490A1/de
Application granted granted Critical
Publication of EP0524490B1 publication Critical patent/EP0524490B1/de
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
    • E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor
    • 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
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • E02F9/166—Cabins, platforms, or the like, for drivers movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins
    • 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 a backhoe loader with a chassis frame, which at the front end has a loader frame with loading arm and loading shovel and at the other end a superstructure which can be rotated through 360 °, on one side a driver's cab and on the other side next to the driver's cab, the drive units and one around a vertical axis pivotable extension bracket for a boom are arranged.
  • the boom in the raised state with the dipper stick folded and the working tool has a rest position set forwards for road travel to the side outside the field of vision of the driver's cab, with a front fender arranged in front of the mounting bracket serving as a storage space for the working tool.
  • a mobile excavator is combined with the corresponding rotatable superstructure with a conventional loading device arranged on the front of the chassis frame.
  • the superstructure is pivoted backwards with the boom assembly, so that depending on the superstructure's angle of rotation, digging can be carried out in an extension of the longitudinal center axis of the undercarriage frame or offset to the side. Beyond that too side digging possible.
  • the uppercarriage During loader operation and when driving on roads, the uppercarriage remains pivoted forward into the rest position with the boom mounted on the side next to the driver's cab, whereby the driver's cab allows a clear view of the loading shovel, since the raised boom and the dipper stick folded down remain to the side outside the field of vision.
  • the work tool is located on the fender on the side opposite the driver's cab.
  • the invention has for its object to improve the known backhoe loader so that a quick repositioning of the superstructure including the boom assembly of excavation work for loading work or for road travel, without dismantling or repositioning an excavator or loader part, is only guaranteed by simple control operations without special attention.
  • the rest position of the boom assembly can be sought by the driver in a very simple manner by aligning the longitudinal center axis of the superstructure with that of the chassis frame or the direction of the driver's cabin with that of the vehicle frame and the boom assembly around the vertical axis when the boom is set upwards of the add-on bracket is pivoted until the work tool lies against the vertical protective wall provided on the side of the loader frame. Damage to the loader frame is effectively avoided by the vertical protective wall. It is not necessary to pivot the boom assembly around the axis of the attachment bracket if the boom remains set in the longitudinal direction of the uppercarriage from the digging work previously carried out. In this case or if the boom is slightly inclined, the storage space provided on the fender is large enough to accommodate most of the usual digging tools.
  • Claim 2 leads to a design in which the common pivot plane of the boom assembly is approximately parallel to the longitudinal center axis of the chassis frame in the rest position. Due to the lateral offset of the vertical swivel axis of the attachment bracket, it is ensured that the work tool always has enough space on the widened shelf, even when the boom is slightly inclined.
  • Claim 3 intends that with respect to the longitudinal center axis of the chassis frame laterally offset lifting frame of the loader can be symmetrically connected to the loading shovel for the purpose of favorable distribution and transmission of forces, and the rocker arm cylinder and the bucket tilt cylinder transfer their supporting forces centrally into the vehicle frame.
  • Claim 4 relates to the design of the cranked frame side of the loading arm designed as a lifting frame. With the help of the bend consisting of simple components, a symmetrical connection of the lifting frame to the loading shovel is possible. If the offset designed for one frame side is also provided on the other side of the frame, this results in a particularly narrow loading frame and a symmetrical connecting end of the lifting frame widened towards the loading shovel.
  • the loader frame is arranged completely to the side next to the longitudinal center axis of the chassis frame, the loading arm consisting of two spars which are mounted at a lateral distance from one another in the loader frame and which are connected at the front end to a transverse tube carrier which is symmetrically connected to the loading shovel.
  • This loader frame which is consistently offset on the cabin side, enables particularly wide storage for the work tools, but requires a stiffened construction of the loading arm.
  • the lifting frame consisting of the above-mentioned spars is replaced by a mono rocker whose front end is widened to one side for the purpose of symmetrical connection to the loading shovel.
  • a driver's cab brought forward in accordance with claim 8 aims to reduce the distance between the steering wheel and the front edge of the bucket and provides an optimal overview during loading work or driving on the road.
  • the relative offset of the extension bracket with respect to the front of the cabin enables the folded boom assembly to be accommodated without impairing the view of the loading shovel.
  • An optionally switchable front or rear wheel steering with switchable all-wheel steering according to claim 9 leads to optimal uses of the work vehicle by turning on the front steering when driving on the road to prevent swerving of the device and damage to other road users, while a charger operation with activated rear steering ensures the best efficiency .
  • the transverse threshold on the front of the shelf according to claim 10 it is achieved that the work tool on the shelf does not have to be clamped or lashed in driving to avoid unintentional movements if the hydraulic cylinders should give way due to leakage during a long journey.
  • the threshold can be replaced by a transverse channel or trough.
  • a backhoe loader is supported on a chassis frame 10 via the base wheels 16 of a front axle 12 and a rear axle 14.
  • the ground wheels 16 of the front and rear axles shown in FIGS. 3 and 4 with the opposite steering angle are intended to indicate that an optionally switchable steering device is provided, with which all-wheel steering for all cramped construction sites, so-called crab steering for extreme driving maneuvers, is best for driving a steering with the wheels of the front axle 12 and for work with the front loader a steering only with the wheels of the rear axle 14 is switched on.
  • a loader frame consisting of vertical support parts 24, between which the rear end of a loader arm 26 is pivotally mounted about a horizontal axis 27.
  • a loader frame consisting of vertical support parts 24, between which the rear end of a loader arm 26 is pivotally mounted about a horizontal axis 27.
  • a loading shovel 38 is rotatable about a horizontal axis 48, which in a known manner by means of a tilting cylinder 42 articulated at 41 on the loading frame and to a rocking arm 40 and by means of a rod 43 extending between the rocking arm 40 and the loading shovel 38 between Unloading positions open at the front or at the bottom, a scraping position according to FIG. 2 and an upwardly open transport position according to FIG. 1 is tilted.
  • a superstructure 54 which can be rotated about a vertical axis 53, for example by means of a slewing ring 52, on the platform 55 of which a counterweight 58, a drive and hydraulic unit 59 and a boom assembly are arranged in addition to a lateral driver's cab 56.
  • the excavator boom 62 has a horizontal pivot axis 80 on a mounting bracket 64 which can be pivoted about a vertical axis 70 by means of connecting straps 66 on lugs 68 starting from the superstructure.
  • the mounting bracket 64 can be pivoted about its axis according to FIGS. 3 and 4 to both sides within a total range of approximately 120 ° or more.
  • the mounting bracket 64 carries a side extension 72 as a connection for a pivot cylinder 74 articulated at the other end of the superstructure.
  • the pivoting range of the mounting bracket indicated by broken lines can also be expanded when a different pivot drive is used.
  • the dimensions of the uppercarriage, undercarriage frame and loading shovel are such that the side limits limit the values prescribed for road travel or do not exceed them.
  • the superstructure In driving and loader operation, the superstructure is set with the front of the cabin facing forward so that the longitudinal center axis of the superstructure and the chassis frame match.
  • the driver's cab 56 Within the enveloping circle H of the superstructure 54, which is determined by the dimensions of the counterweight 58, the driver's cab 56, which is arranged next to the longitudinal center axis, is advanced so that the driver has an unobstructed view of the loading shovel and the road in front of it. To the side of the driver's cab 56, the length of the platform 55 of the superstructure is reduced.
  • the pivot axis 70 of the mounting bracket 64 located in front of this area of the platform is laterally behind the cabin front wall 60, so that there is sufficient space in front of the mounting bracket on the undercarriage frame 10 for the folded working tool 78 in when the boom 62 is raised with the dipper stick 76 folded down to be able to place the rest position shown in FIGS. 1, 3 and 4 laterally outside the unobstructed view from the driver's cab to the loading shovel 38.
  • Front left and right fenders 18 and 20 are fastened to the chassis frame 10 in the direction of travel. 3 and 4 is provided with a shelf 22 which is widened in the direction of the longitudinal center axis of the undercarriage frame and which can consist of a stiffened or supported plate or another suitable stable support.
  • the shelf 22 extends up to the right support 24 of the loader frame in the direction of travel, which is covered on the outside by a vertical protective wall 50 shown hatched in FIG. 2 or forms a structural unit with it and protects the loader frame from damage when the superstructure 54 with the boom assembly or this alone can be pivoted into a rest position shown in FIGS. 3 and 4, in which the working tool is placed on the shelf 22.
  • a vertical protective wall 50 shown hatched in FIG. 2 or forms a structural unit with it and protects the loader frame from damage when the superstructure 54 with the boom assembly or this alone can be pivoted into a rest position shown in FIGS. 3 and 4, in which the working tool is placed on the shelf 22.
  • an elevated threshold 86 is provided, which secures the working tool 78 during driving operation, so that it does not accidentally slide away from the shelf to the front when the locking action of the hydraulic cylinders of the boom assembly decreases due to leakage.
  • the threshold can also be provided on the outside of the shelf.
  • the shelf 22 is widened according to FIG. 3 up to approximately the longitudinal central axis of the undercarriage frame, ie up to the vertical protective wall 50 arranged there, which can form a unit with the vertical support plate 24 of the loader frame.
  • the two support plates 24 of the narrow loading frame arranged asymmetrically on the side of the driver's cab are connected by a rear wall 25 or stiffened against each other.
  • the loader arm 26 mounted in the loader frame consists of tubular or box bars 28a, 30a, the front ends of which are connected to a cross member 32a.
  • the cross member 32a which is extended on one side via the connections, is connected to the loading shovel 38 symmetrically to the longitudinal center axis.
  • the tilt cylinder 52 and the Swing arm lifting cylinders 46 are located according to the top view of FIG. 3 between or above the bars 28a, 30a of the swing arm.
  • the boom does not necessarily have to be adjusted parallel to the longitudinal center axis of the undercarriage frame, as shown, but can also remain on the tray 22 in slight inclined positions to one side or the other with the digging spoon.
  • the loader frame 24 is also displaced in the direction of the cabin side of the undercarriage frame, but the right-hand support 24 in the direction of travel and the e.g. with it a unitary protective plate 50 with respect to the longitudinal center axis on the side of the shelf 22.
  • the tilt cylinder 42 and the rocker arm cylinder 46 are supported in the middle of the chassis frame 10, and consequently the actuating and supporting forces during operation of the loading shovel are absorbed or balanced distributed.
  • the loading arm 26 designed as a lifting frame consists of a left frame side 28 and a right frame side 30, which are interconnected by transverse stiffeners 32.
  • the frame side 30 has an offset, so that the lifting frame extends symmetrically at the front end to the bucket width and is connected symmetrically to the loading bucket 38.
  • a shorter front frame part 34 overlaps in the direction of the rocker arm with the longer rear frame side 30 and is firmly connected to it via one or more gusset plates 36.
  • the pivot axis 70 of the mounting bracket 64 can be located at a somewhat greater lateral distance from the longitudinal center axis of the superstructure than in FIG. 3, and thus in the forward, folded, rest position of the boom assembly wide digging spoons can also be placed on the shelf without protruding beyond the side of the vehicle.
  • the lateral pivotability of the boom or a pivotable attachment bracket increases the possible uses of the mobile excavator, for example for pulling trenches that are offset laterally
  • the advantages resulting from the broadened storage according to the invention can also be achieved in excavator types without the feature of lateral boom pivoting.
  • the two-part shape of the excavator arm can be replaced by other shapes of the boom assembly.

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)
  • Body Structure For Vehicles (AREA)
  • Steroid Compounds (AREA)
EP92111627A 1991-07-24 1992-07-09 Baggerlader Expired - Lifetime EP0524490B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4124461 1991-07-24
DE4124461A DE4124461A1 (de) 1991-07-24 1991-07-24 Baggerlader

Publications (2)

Publication Number Publication Date
EP0524490A1 EP0524490A1 (de) 1993-01-27
EP0524490B1 true EP0524490B1 (de) 1994-10-05

Family

ID=6436866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111627A Expired - Lifetime EP0524490B1 (de) 1991-07-24 1992-07-09 Baggerlader

Country Status (7)

Country Link
US (1) US5295318A (enrdf_load_stackoverflow)
EP (1) EP0524490B1 (enrdf_load_stackoverflow)
JP (1) JP2564450B2 (enrdf_load_stackoverflow)
KR (1) KR930002618A (enrdf_load_stackoverflow)
AT (1) ATE112600T1 (enrdf_load_stackoverflow)
DE (2) DE4124461A1 (enrdf_load_stackoverflow)
ES (1) ES2061301T3 (enrdf_load_stackoverflow)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778569A (en) * 1995-04-02 1998-07-14 Karl Schaeff Gmbh & Co. Multi-purpose construction vehicle with at least two subframes and a self-aligning bearing between the subframes
EP1010820A4 (en) * 1997-07-11 2002-07-31 Komatsu Mfg Co Ltd CONSTRUCTION MACHINE
GB2352224A (en) * 1999-05-29 2001-01-24 Bamford Excavators Ltd Material handling vehicle
DE10113702B4 (de) * 2001-03-16 2008-05-08 Kässbohrer Geländefahrzeug AG Strandreinigungsfahrzeug mit einem Fahrzeugrahmen
GB2395187B (en) * 2002-11-14 2006-08-02 Bamford Excavators Ltd Excavating and loading machine
JP2005023718A (ja) * 2003-07-01 2005-01-27 Komatsu Ltd 建設機械
US7147425B2 (en) * 2003-12-23 2006-12-12 John Andrews Holt Convertible compact loader and excavator
WO2006135863A1 (en) * 2005-06-10 2006-12-21 The Charles Machine Works, Inc. Turret mounted compact tool carrier
CN101470083B (zh) * 2007-12-27 2011-08-03 同方威视技术股份有限公司 用于车载式辐射成像系统的新型折臂机构
JP4472763B2 (ja) * 2008-05-14 2010-06-02 株式会社アイメック 建機車輌
US7581341B1 (en) * 2008-05-23 2009-09-01 Reeves Jr James B Wheel loader
JP2017048572A (ja) * 2015-08-31 2017-03-09 株式会社小松製作所 作業機械
WO2019227469A1 (en) * 2018-06-01 2019-12-05 Guangxi Liugong Machinery Co., Ltd. Multiple tool construction machine
CN114032985A (zh) * 2021-11-26 2022-02-11 江苏徐工工程机械研究院有限公司 可高效挖掘的挖掘装载机

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO132910C (enrdf_load_stackoverflow) * 1974-07-19 1976-01-28 Ingebret Soyland
DE3227136A1 (de) * 1982-07-20 1984-01-26 Kramer-Werke GmbH, 7770 Überlingen Lade- und baggergeraet
EP0116474B1 (en) * 1983-02-12 1986-12-10 Kabushiki Kaisha Hikoma Seisakusho Earth-working machine
FR2558500B1 (fr) * 1984-01-24 1986-10-17 Fontana Jean Francois Engin de travaux publics polyvalent
DE3411866A1 (de) * 1984-03-30 1985-10-10 Friedrich Wilh. Schwing Gmbh, 4690 Herne Loeffelbagger
GB8430389D0 (en) * 1984-12-01 1985-01-09 Bamford Excavators Ltd Earth moving machine
US4776750A (en) * 1987-04-23 1988-10-11 Deere & Company Remote control system for earth working vehicle
US4848010A (en) * 1987-07-27 1989-07-18 Zimmerman Harold M Backhoe machine
US4906161A (en) * 1987-11-30 1990-03-06 Weyer Paul P Tiltable bucket assembly
DE3932555A1 (de) * 1989-09-29 1991-04-11 Schaeff Karl Gmbh & Co Baggerlader

Also Published As

Publication number Publication date
JP2564450B2 (ja) 1996-12-18
US5295318A (en) 1994-03-22
JPH05202533A (ja) 1993-08-10
DE59200589D1 (de) 1994-11-10
EP0524490A1 (de) 1993-01-27
KR930002618A (ko) 1993-02-23
ATE112600T1 (de) 1994-10-15
ES2061301T3 (es) 1994-12-01
DE4124461A1 (de) 1993-01-28
DE4124461C2 (enrdf_load_stackoverflow) 1993-08-19

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