EP0373148B1 - Hydraulikbagger - Google Patents

Hydraulikbagger Download PDF

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Publication number
EP0373148B1
EP0373148B1 EP89890312A EP89890312A EP0373148B1 EP 0373148 B1 EP0373148 B1 EP 0373148B1 EP 89890312 A EP89890312 A EP 89890312A EP 89890312 A EP89890312 A EP 89890312A EP 0373148 B1 EP0373148 B1 EP 0373148B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
boom
excavator
arm
plate
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
EP89890312A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0373148A1 (de
Inventor
Arnulf Soyland
Josef Dipl.-Ing. Mocivnik
Konrad Schön
Johannes Dipl.-Ing. Jantscher
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.)
BOEHLER LADETECHNIK VERTRIEBS- UND ENTWICKLUNGSGES
Original Assignee
Bohler Ladetechnik Vertriebs- und Entwicklungsgesellschaft Mbh
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 Bohler Ladetechnik Vertriebs- und Entwicklungsgesellschaft Mbh filed Critical Bohler Ladetechnik Vertriebs- und Entwicklungsgesellschaft Mbh
Publication of EP0373148A1 publication Critical patent/EP0373148A1/de
Application granted granted Critical
Publication of EP0373148B1 publication Critical patent/EP0373148B1/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
    • 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
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • 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
    • E02F3/302—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 an additional link
    • 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
    • E02F3/308—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 working outwardly
    • 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
    • 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
    • E02F3/422—Drive systems for bucket-arms, front-end loaders, dumpers or the like

Definitions

  • the invention relates to a hydraulic excavator with a boom which can be pivoted in a vertical plane and is supported on a first frame part, the first frame part being mounted on a base frame so as to be pivotable about a substantially vertical axis, in which excavator the base frame has a chassis, which can be moved against the terrain by moving the excavator bucket, the cantilever arm for displacing the excavator bucket in a horizontal plane and for pivoting the excavator bucket about an essentially horizontal axis lying transversely to the displacement movement, with separate cylinder-piston units and for tilting the Bucket is articulated on the cantilever arm so as to be pivotable about a substantially horizontal axis, at least one thrust cylinder piston unit arranged to move the excavator bucket in the horizontal direction engaging the first frame part, with a cantilever arm on at least one disk m and at least one tilt-cylinder piston unit for pivoting the bucket are pivotally connected, the tilt-cylinder piston unit being connected to a link
  • the invention now relates to a design of a charging device of the type mentioned in the introduction, in which an additional travel drive for moving the entire charger is to be dispensed with, so that in particular compact and light designs are possible.
  • an additional travel drive for moving the entire charger is to be dispensed with, so that in particular compact and light designs are possible.
  • DE-A-25 32 453 it has already been proposed in DE-A-25 32 453 to guide the entire frame part carrying the cantilever arm on straight rails and relative to a lower frame in To make the longitudinal direction of the rails movable.
  • the loading shovel can be moved in a substantially horizontal plane to a position close to the front edge of the base frame and in a position relatively far in front of the front edge of the base frame.
  • support legs were extended in order to achieve a high degree of safety against tipping.
  • the sliding bearing on rails represents a relatively high level of design effort, which overall leads to a heavier construction.
  • the invention now aims to provide a compact device of the type mentioned in the introduction, in which a particularly high degree of adjustability of the loading shovel in the horizontal direction and in the vertical direction is possible using the lightest possible structural parts, and both a position can be achieved, in which the loading shovel comes to lie directly in front of the front edge of the base frame, as well as a puncture position in which the loading shovel can be largely inserted into material to be dismantled in the horizontal direction if the undercarriage is blocked during the insertion process.
  • the design according to the invention essentially consists in that the thrust cylinder piston unit acts between two struts forming a parallelogram linkage on a disc connecting the struts of the parallelogram linkage or in the area of the disc on one of the two struts of the parallelogram linkage and that on the Disc attacks at least one lifting cylinder piston unit for pivoting the cantilever arm in the vertical direction.
  • at least one thrust cylinder piston unit is used between two struts forming a parallelogram linkage for the displacement movement of the excavator bucket in a substantially horizontal direction, a high degree of stability is achieved in the case of comparatively light struts, since the thrust cylinder trusses the struts of the parallelogram linkage stiffened.
  • the measure of forming the part connecting the free ends of the struts of the parallelogram links as a disk offers the advantage of arranging the further link or cylinder-piston assemblies in a kinematically favorable manner on this disk, the disk itself being kept free from torsional forces, so that it is relatively flat and again light-weight panes can be used.
  • Both the lifting cylinder piston unit for pivoting an extension arm for the blade and the tilting cylinder piston unit for pivoting the blade on the extension arm can now be securely mounted on the disks which connect the two struts of the parallelogram linkage, the measure, to articulate the tilt cylinder for tilting the bucket on the cantilever arm on the disk and to connect it to a pivoting arm connected to the cantilever arm, which makes it possible to connect the bucket to the handlebar arm via a coupling rod, so that, if necessary, of the Material falling from the blade cannot reach the cylinder piston units, in particular the cylinder piston unit for tilting the blade, but only on the coupling rod. In this way, the tilt-cylinder piston unit is better protected against premature wear.
  • washers in the frame of the handlebar parallelogram makes it particularly possible use light cantilever arms or a particularly lightly designed lower strut of the parallelogram link, which is made possible, for example, by using hollow profiles for the lower strut or the cantilever arm.
  • the design is preferably such that the disks have an essentially triangular outline, all angles of the triangle being acute angles.
  • an essentially equilateral triangle appears to be particularly advantageous as an outline shape for the side disks, such an essentially triangular disk having particularly favorable and preferred articulation points for struts and hydraulic cylinder-piston units at their corner points.
  • a lightweight and torsion-resistant construction can be realized in a particularly simple manner in that the articulation axes of the cantilever arm, the tilt cylinder and the lifting cylinder are arranged on the disk essentially along a triangular side of the disk, preferably the articulation axes of the lifting cylinder, the tilt cylinder and the Upper strut of the parallelogram handlebars are arranged near the corner points of the substantially triangular disks.
  • Discs in which the articulation axes are arranged in the specified manner, are distinguished by the fact that a particularly low overall height can be maintained in all pivoting positions of the cantilever arm relative to the base frame, all forces being able to be safely absorbed by the discs at the same time simple and relatively thin-walled sheet metal disks can be used, which results in a further weight saving.
  • the design is such that the cantilever arm is cranked and is articulated between the two disks connected to the parallelogram links with the disks and the lower strut of the parallelogram links.
  • the extension arm which is pivotally connected to the disc is a cranked cantilever arm
  • a particularly extensive pivoting of the cantilever arm is also possible if the lower strut of the parallelogram is formed by a box profile.
  • the boom arm is pivoted in, an almost parallel position of the boom arm to the lower strut of the parallelogram linkage can be realized in the retracted position of the blade, which in turn allows the blade to be used close to the front edge of the base frame with small dimensions. Overall, this results in a relatively large operating radius of the blade with particularly compact dimensions.
  • a particularly stable construction and good absorption of the dynamic forces when pivoting the cantilever arm or when inserting the shovel into material to be dismantled or loaded can be achieved in that the articulation axis of the lower strut of the parallelogram link and the cantilever arm is arranged approximately in one side center of a triangular side is.
  • disks of the type described above and the preferred configuration of the cantilever arm as a cranked cantilever arm allows, as already mentioned, a further weight saving, without loss of stability, with respect to the lower strut of the parallelogram link, which can preferably be designed as a box profile, and, as it corresponds to a preferred embodiment of the invention, is arranged between two disks, a separate upper strut of the parallelogram handlebar engaging each disk.
  • the push-cylinder piston unit or the push-cylinder piston units can be arranged protected between the disks, while using a box profile for the lower strut of the parallelogram link, extensive protection of these cylinder-piston units for the displacement drive of the Bucket can be offered in a substantially horizontal direction.
  • the design is advantageously made such that the thrust-cylinder piston assembly is pivotally supported near the articulation point of the upper strut of the parallelogram link on the frame part and at the upper end of the lower one Strut of the parallelogram and / or on the disc near this articulation point attacks.
  • a particularly stable, compact and lightweight construction can be achieved in that the disks are formed by box profiles, the articulation axes for the lifting and tilting cylinder piston units and possibly for the upper struts of the parallelogram linkage forming between free flanges of the disks .
  • stable disks are formed with low weight, which also offer protection of the articulation points of the cylinder-piston units and the struts.
  • FIG. 1 shows a perspective view of a hydraulic excavator according to the invention
  • FIGS. 2 and 3 show side views of the hydraulic excavator according to the invention with different positions of the cantilever arm and the bucket.
  • a hydraulic excavator which has a base frame 2 with a chassis for wheels 3.
  • a first frame part generally designated 4
  • various auxiliary units are mounted on the base frame and generally designated 6 and a driver's cab 7 is provided.
  • the hydraulic excavator 1 does not have its own drive, but instead a movement of the excavator bucket 8 is used to move the excavator, as will be explained in the following.
  • the articulation axes of the lower strut 9 on the frame and on the disks 11 arranged on both sides of the lower strut 9 are denoted by 12 and 13.
  • the articulation axis of the upper strut on the disks 11 is designated by 14.
  • a thrust-cylinder piston unit 15 is arranged, which is pivotally articulated on the frame between the two struts 9 and 10 and on the lower strut 9 in the region of the disks 11, as is shown in the following figures becomes clearer.
  • the cylinder-piston unit 15 When the cylinder-piston unit 15 is actuated, the blade 8 moves in a substantially horizontal direction relative to the ground via the parallelogram link 4.
  • a cranked cantilever arm 16 is further articulated about the articulation axis 13 of the lower strut 9 on the disks 11, whereby for a lifting movement of the cantilever arm 16 on both sides of the cantilever arm arranged stroke-cylinder-piston units 17 are used.
  • the articulation axes of the lifting cylinders 17 on the disks 11 and on the extension arm 16 are designated 18 and 19, respectively.
  • tilt-cylinder piston units 20 are provided, which are pivotably mounted on the coupling disks 11 and on link arms 21 articulated to the extension arm about pivot axes 22 and 23, respectively.
  • the articulation axes of the link arms 21 on the extension arm are designated by 24.
  • Coupling rods 25 are connected to the articulated handlebar arms 21 about pivot axes 26, these coupling rods 25 being connected to the blade outside the tilting axis of the blade 8 on the extension arm 16, as is shown in more detail in the following figures.
  • the disks 11 are formed by hollow box profiles, the bolts forming the respective articulation axes 13, 14, 18, 22 being arranged between free flanges of the disks and in this way the bearing eyes of the struts or cylinder-piston units are arranged in a protected manner between the disks.
  • Fig. 2 the boom arm or the bucket is shown in the erected position.
  • the cylinder-piston unit 15 provided between the struts 9 and 10 of the parallelogram link 4 is clearly visible, which is about a pivot axis 27 on the frame and in the region of the pivot axis 13 of the lower strut 9 on the disks 11, which is aligned with the pivot axis of the extension arm 16 the disks coincide, is pivoted about a pivot axis 28.
  • the articulation axis of the upper strut 10 on the frame is designated 29.
  • the articulation axis 30 of the blade 8 on the cantilever arm 16 and the articulation axis 31 of the coupling rod 25 provided outside this articulation axis are shown in more detail in FIG. 2.
  • the disks 11 have an essentially triangular outline and there are the articulation axes 18 and 22 of the lifting cylinder 17 and the tilting cylinder 20 as well as the articulation axis 14 of the upper strut 10 of the parallelogram arm 4 near the corner points of the almost equilateral triangle the discs 11 arranged.
  • the disks 11 For a suitable kinematics and low loading of the disks 11, as a result of which they can be made relatively thin-walled and light, as can be seen from FIG.
  • the articulation axes of the extension arm 16 and the lifting cylinder 17 and the tilting cylinder 20 are essentially along a triangular side arranged, the common articulation axis of the lower strut 9 on the disks 11 and the extension arm 16 on the disks 11 being provided substantially centrally between the articulation axes 18 and 22 of the cylinder-piston units.
  • the cranked design of the cantilever arm 16 is also clearly visible, which for achieving a position of the bucket 8 as close as possible to the chassis of the excavator, as is shown even more clearly in FIG. 3, when the lower strut 9 of the Parallelogram handlebar is particularly suitable as a box profile.
  • the push-cylinder-piston unit 15 is arranged essentially diagonally between the struts 9 and 10 of the parallelogram link or the first pivotable frame part 4 and is pivotably articulated near the articulation axes of the struts on the frame or on the disks 11, as a result of which With a lever arm that is as long as possible, good force absorption with the lowest possible bending forces on the struts can be achieved by the push-cylinder piston unit 15.
  • FIG. 2 Different positions of the excavator shovel 8 are shown in broken lines in FIG. 2. Starting from a position 8a, which is shown in more detail in FIG. 3 with the corresponding position of the cylinder-piston units and pivotable struts or the pivotable extension arm, results when only the thrust cylinder 15 is actuated, a movement of the bucket in a substantially horizontal direction into a position 8b in which the bucket can be erected into the position 8c by actuation of the tilting cylinder 20.
  • the excavator is moved by correspondingly supporting the bucket in the ground starting from position 8b, whereby after the blocking of the undercarriage has been released by actuating the push cylinder, the excavator is pulled up by the bucket buried in position 8b until the bucket 8 is self-supporting in turn is located close to the landing gear. A large displacement path of the excavator can thus be achieved in one operation.
  • actuation of the lifting cylinder 17 causes the bucket to be pivoted into the position 8d furthest away from the frame, with only the push cylinder 15 again moving the bucket into a position 8e substantially above the machine frame between the struts 9 and 10 is operated.
  • the movement takes place in such a way that material picked up remains securely in the bucket without additional compensating movements, for example of the tilting cylinder, being necessary.
  • the handlebar geometry or the arrangement of the cylinder-piston units is thus made such that for an arbitrary operation only one cylinder-piston unit has to be actuated, which makes handling much easier overall, since no complicated corrective movements of a second cylinder-piston unit are necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • Earth Drilling (AREA)
  • Operation Control Of Excavators (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP89890312A 1988-12-05 1989-12-05 Hydraulikbagger Expired - Lifetime EP0373148B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0298088A AT396266B (de) 1988-12-05 1988-12-05 Hydraulikbagger
AT2980/88 1988-12-05

Publications (2)

Publication Number Publication Date
EP0373148A1 EP0373148A1 (de) 1990-06-13
EP0373148B1 true EP0373148B1 (de) 1994-08-24

Family

ID=3543432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89890312A Expired - Lifetime EP0373148B1 (de) 1988-12-05 1989-12-05 Hydraulikbagger

Country Status (5)

Country Link
EP (1) EP0373148B1 (es)
AT (2) AT396266B (es)
BG (1) BG50498A3 (es)
DE (1) DE58908234D1 (es)
ES (1) ES2063166T3 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009013626A1 (de) * 2009-03-11 2010-09-16 Gerd Bär GmbH Heb- und senkbare Plattformeinrichtung für den Anbau an ein Fahrzeug, insbesondere an ein Landfahrzeug oder an ein Wasserfahrzeug
CN104594403A (zh) * 2014-12-25 2015-05-06 广西大学 一种电磁式主动变胞多闭链连杆可控挖掘机构

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4219720A1 (de) * 1992-06-17 1993-12-23 Hausherr & Soehne Rudolf Senkvorrichtung zum Einsatz in untertägigen Strecken
CN103726520A (zh) * 2013-12-16 2014-04-16 广西大学 一种九杆两自由度轻型机械式装载机构
CN103726532A (zh) * 2013-12-17 2014-04-16 广西大学 一种具有可控的并联对称机构式装载机
CN103741740A (zh) * 2014-01-16 2014-04-23 上海交通大学 电-液混合驱动式矿用挖掘机的挖掘机构
CN104631524A (zh) * 2014-12-25 2015-05-20 广西大学 一种电磁式主动变胞多连杆可控挖掘机构
CN108274066A (zh) * 2018-01-18 2018-07-13 天津莱茵克拉电梯有限公司 一种可升降的剪床接料器
DE102019100075B3 (de) * 2019-01-03 2020-03-19 Mecalac Baumaschinen GmbH Radlader
CN111997114A (zh) * 2020-09-28 2020-11-27 徐工集团工程机械股份有限公司科技分公司 角度可调式平动举升机械
CN113338367B (zh) * 2021-06-28 2022-01-11 徐工集团工程机械股份有限公司科技分公司 一种四连杆两油缸的滑移装载机单边动臂结构及提升方法

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Publication number Priority date Publication date Assignee Title
NL123413C (es) * 1963-05-02
GB1472069A (en) * 1974-03-12 1977-04-27 Hy Mac Ltd Hydraulically operated shovels
US4143778A (en) * 1977-06-03 1979-03-13 Harnischfeger Corporation Shovel attachment means for hydraulic excavator
US4103791A (en) * 1977-06-03 1978-08-01 Harnischfeger Corporation Shovel attachment means for hydraulic excavator
US4193733A (en) * 1978-05-17 1980-03-18 Harnischfeger Corporation Hydraulic excavator machine having self-contained electrohydraulic power units
JPS6014817Y2 (ja) * 1979-04-18 1985-05-11 株式会社小松製作所 掘削積込機の掘削積込装置
DE3104072C2 (de) * 1981-02-06 1986-07-03 O & K Orenstein & Koppel Ag, 1000 Berlin Löffelbagger
DE8234522U1 (de) * 1982-12-06 1985-09-12 O & K Orenstein & Koppel Ag, 1000 Berlin Ausleger einer Baggerausrüstung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009013626A1 (de) * 2009-03-11 2010-09-16 Gerd Bär GmbH Heb- und senkbare Plattformeinrichtung für den Anbau an ein Fahrzeug, insbesondere an ein Landfahrzeug oder an ein Wasserfahrzeug
CN104594403A (zh) * 2014-12-25 2015-05-06 广西大学 一种电磁式主动变胞多闭链连杆可控挖掘机构

Also Published As

Publication number Publication date
EP0373148A1 (de) 1990-06-13
ATA298088A (de) 1992-11-15
ATE110431T1 (de) 1994-09-15
DE58908234D1 (de) 1994-09-29
ES2063166T3 (es) 1995-01-01
AT396266B (de) 1993-07-26
BG50498A3 (en) 1992-08-14

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