WO2003018917A1 - Engin a moteur-couple hydraulique - Google Patents

Engin a moteur-couple hydraulique Download PDF

Info

Publication number
WO2003018917A1
WO2003018917A1 PCT/EP2002/009357 EP0209357W WO03018917A1 WO 2003018917 A1 WO2003018917 A1 WO 2003018917A1 EP 0209357 W EP0209357 W EP 0209357W WO 03018917 A1 WO03018917 A1 WO 03018917A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
rotary motor
construction machine
hydraulic
axis
Prior art date
Application number
PCT/EP2002/009357
Other languages
German (de)
English (en)
Inventor
Thomas Paa
Original Assignee
Rädlinger Maschinen- und Anlagenbau 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
Application filed by Rädlinger Maschinen- und Anlagenbau GmbH filed Critical Rädlinger Maschinen- und Anlagenbau GmbH
Publication of WO2003018917A1 publication Critical patent/WO2003018917A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/425—Drive systems for dipper-arms, backhoes or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/32—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 downwardly and towards the machine, e.g. with backhoes

Definitions

  • the invention relates to a construction machine with at least one pivotable arm.
  • a large number of different construction machines which have at least one arm that can be rotated about an axis, for example single-arm wheel, caterpillar and compact loaders, in which a so-called lifting frame (arm) rotates around a first axis directly on the construction machine from chassis and body, and two-arm or multi-arm hydraulic excavators and shovel loaders, in which a stick (front arm) is rotatably attached to a boom (second arm) about a first axis, which in turn is rotatable either about a parallel second axis directly on the construction machine (rigid or
  • the second or rear arm is rotatably attached to the construction machine about a parallel second or rear axis.
  • an output device for example one
  • Quick-change device rotatably fastened about a parallel front axis, on which a working device (shovel, spoon, gripper, drill, plow etc.) is either fixed rigidly or pivotably in a plane of the front axis.
  • a working device shovel, spoon, gripper, drill, plow etc.
  • Hydraulic differential cylinders rotated around the respective axes.
  • the reciprocating piston and that Cylinder housing attached at their outer, opposite ends by means of a swivel joint to the arm or the adjacent component (output device, boom, construction machine) in such a way that the longitudinal axis of the hydraulic cylinder is perpendicular to the axis of rotation.
  • a swivel joint to the arm or the adjacent component (output device, boom, construction machine) in such a way that the longitudinal axis of the hydraulic cylinder is perpendicular to the axis of rotation.
  • a swivel joint is designed as a plain bearing, for example, in which a bolt is mounted in bushings.
  • Construction machines of this type have a number of disadvantages: on the one hand, the exposed piston rods of the hydraulic cylinders, some of which serve as sealing surfaces and therefore have to have a correspondingly smooth and clean surface finish, can easily become dirty or damaged in the rough use of construction machines on construction sites etc. , Furthermore, the hydraulic cylinders only allow a theoretical swivel range of less than 180 °, which in practice is usually significantly smaller. In addition, the hydraulic cylinders have to be serviced frequently due to the wear of the slide bearings, especially under the rough working conditions on construction sites (dirt, impact loads, etc.). After all, each hydraulic cylinder always requires two hydraulic lines for the supply and return, which are connected to the housing of the hydraulic cylinder.
  • the present invention is therefore based on the object of providing a construction machine with at least one pivotable arm which is less sensitive to the conditions of use on construction sites.
  • a first hydraulic rotary motor is fastened in a rotationally fixed manner at its front end, the axis of rotation of which is oriented essentially parallel to the direction of the width of the arm.
  • an output device fastened to the motor or a front arm fastened to the motor can be rotated with respect to the first arm.
  • Such a construction machine has a number of advantages over a conventional construction machine according to the prior art described above: on the one hand, a hydraulic rotary motor is almost maintenance-free due to its oil-lubricated bearing and is very well protected against the ingress of dirt since it does not get in and out has extending piston rods. Of course, no exposed piston rod can be damaged here.
  • the hydraulic rotary motor enables a larger swivel range, which in practice is significantly larger than 180 ° and, depending on the design of the output device or the front arm, can even encompass the full 360 ° range.
  • a hydraulic rotary motor delivers constant torque over the entire swivel range. After all, a hydraulic rotary motor is very compact. Since he's about it In addition, there is no need for a linkage lever or linkage to translate it into a rotational movement, which means that it enables working in tightly confined workspaces. In addition, there is a cost advantage due to the omission of a deflection device.
  • the housing of the first rotary motor is advantageously fastened to the first arm and an output device or a front arm is fastened to the output shaft of the rotary motor, so that the hydraulic lines of the rotary motor attached to the housing are not moved.
  • these hydraulic lines are arranged protected inside the first arm.
  • the output shaft can also be attached to the first arm and the housing to an output device or a front arm.
  • the output device can either itself be a working device, for example an excavator bucket or a plow, i.e. be integrally attached to the implement, or such an implement is releasably attached to the output device, for example by means of a known quick-change device, and thus enables the quick replacement of the implement.
  • the output device has a movement device with which an attached attachment device can be moved relative to the output device about at least one axis deviating from the axis of rotation of the first hydraulic rotary motor.
  • a movement device can be, for example, another hydraulic rotary motor or a hydraulic differential cylinder known per se.
  • a working device can be directly integrated or detachably on the attachment, for example by means of Quick-change device or the like, be attached so that the implement can also be pivoted relative to the first arm about an axis that is not oriented parallel to the axis of rotation of the first rotary motor.
  • a rear hydraulic rotary motor is also attached to the rear end of the first arm, which in turn is connected to the construction machine and rotates the arm relative to that of the construction machine about a rear axis of rotation.
  • the construction machine can be, for example, a one-armed wheel loader.
  • a second hydraulic rotary motor is attached to the rear end of the arm, which in turn is attached to a boom and rotates the first arm relative to the boom about a second axis of rotation.
  • This boom can be attached to the construction machine by means of a rear hydraulic motor or a swivel joint, and can be rotated with respect to the construction machine by the rear hydraulic motor or at least one hydraulic cylinder.
  • the construction machine can be, for example, a hydraulic excavator with a rigid monoblock boom.
  • the boom can in turn be fastened to a rear boom by means of a third hydraulic motor or a swivel joint and can be rotated with respect to the rear boom by the third hydraulic motor or at least one hydraulic cylinder.
  • the rear boom can be fastened to the construction machine by means of a rear hydraulic motor or a swivel joint, and can be rotated relative to the construction machine by the rear hydraulic motor or at least one hydraulic cylinder.
  • the construction machine can for example, a hydraulic excavator with an adjustable boom.
  • the hydraulic lines of the hydraulic rotary motors and / or the hydraulic cylinders can advantageously be arranged at least partially within the arms in order to protect them against damage.
  • FIG. 1 is a side view of a hydraulic excavator with a rigid monoblock boom according to a first embodiment of the present invention
  • FIG. 2 shows a cross-section of a crawler loader in plan view according to a second embodiment of the present invention.
  • Fig. 3 is a cross-sectional plan view of a crawler loader according to a third embodiment of the present invention.
  • Fig. 1 shows a hydraulic excavator 10 with chassis
  • Equipment comprising a first arm (arm) 100, a second arm (boom) 200 and a spoon 21.
  • the housing 111 of a first hydraulic rotary motor 110 is fixed in a rotationally fixed manner, for example detachably by means of screws or non-detachably by means of welding, riveting or the like, such that the axis of rotation AI of the rotary motor 110 is oriented essentially parallel to the direction of the width of the stem 100 ,
  • a quick coupler 20 is, for example, non-rotatably on the output shaft 112 of the rotary motor 110 fixed by positive engagement in corresponding recesses and / or screwed threaded bushings.
  • the spoon 21 is detachably attached to the quick coupler 20 in a manner known per se.
  • the bucket 21 is thus rotated relative to the stick 100 about the axis of rotation AI of the rotary motor 110, a pivoting range of well over 180 ° being obtained here, depending on the design of the bucket.
  • the working movement of the working device is only effected by the hydraulic rotary motor.
  • a further hydraulic rotary motor is arranged between quick coupler 20 and output shaft 112 of the first rotary motor in such a way that it rotates quick coupler 20 and output shaft 112 of the first rotary motor against one another about an axis of rotation which is not parallel to the axis of rotation AI of the first rotary motor 111 lies.
  • a swivel joint and a hydraulic differential cylinder can also be used to implement this pivoting movement. This modified version advantageously allows the implement to be pivoted further to the side, for example for lateral excavation even in narrow shafts.
  • the output shaft 212 of a second hydraulic rotary motor 200 is fixed in a rotationally fixed manner, for example by positive engagement in corresponding cutouts and / or screwed threaded bushings.
  • the housing 211 of the second rotary motor 210 is fastened in a rotationally fixed manner, for example detachably by means of screws or non-detachably by means of welding, riveting or the like, to the front end of the arm 200.
  • the second hydraulic rotary motor 210 thus rotates the arm 100 relative to the boom 200 about an axis of rotation A2, which is oriented essentially parallel to the axis of rotation AI of the hydraulic rotary motor 110.
  • the rear end of the boom 200 is rotatably fastened to the superstructure 12 of the excavator 10 by means of slide bearings and is rotated in a manner known per se about a rear axis of rotation A3 parallel to the axis of rotation A1 of the first hydraulic rotary motor 110 by hydraulic differential cylinders 13.
  • the boom is additionally tilted by a hydraulic differential cylinder about an axis of rotation (vertical axis) that is different from the rear axis of rotation.
  • the boom 200 is not directly connected to the superstructure 12 of the construction machine 10, but to a third arm, which in turn is rotatably connected to the superstructure 12 of the construction machine 10 and opposite it by means of one or more hydraulic differential cylinders or a hydraulic rotary motor is rotated about an axis parallel to the axis of rotation of the first rotary motor.
  • FIG. 2 shows a top view of the section through a crawler loader, wheel loader or excavator 10 with running gear
  • the housing is on a first arm 100
  • the output shaft 112 of the motor 110 is fastened to an output device 20 by means of screwed threaded bushings. This is connected to a blade 21 by welding.
  • the first rotary motor 110 rotates the output device 20 and the blade 21 with respect to the first arm 100 about an axis of rotation AI, which in the is oriented substantially parallel to the direction of the width of the first arm.
  • the output shaft 302 of a rear rotary motor 300 is fastened in a rotationally fixed manner by positive engagement in a corresponding recess and a screwed threaded bushing.
  • the housing 301 of the rear rotary motor is fastened to the structure 12 of the crawler loader 10 by screwing.
  • the rear rotary motor 300 rotates the first arm 100 relative to the crawler loader 10 about a rear axis of rotation A3 which is oriented substantially parallel to the direction of the width of the first arm.
  • the hydraulic lines 120 of the first hydraulic motor 110 are arranged in the first arm 100 and thus protected against damage.
  • FIG. 3 shows a top view of a crawler loader 10 according to a third embodiment of the present invention, which is constructed similarly to that shown in FIG. 2
  • a foremost hydraulic rotary motor 22 with its housing 22b is fastened to the output shaft 112 of the first rotary motor 110 as a movement device by screwing onto flanges 20, which in turn are fastened to the output shaft 112 of the first rotary motor 110 by means of screwed threaded bushings 113 are.
  • the output shaft 22a of the foremost hydraulic rotary motor 22 engages in a corresponding recess in a first plate 23a at one end and is screwed to a parallel second plate 23b at the other end with a flange formed there.
  • This is the Output shaft 22a of the foremost rotary motor 22 is fastened to the two plates 23a, 23b which are welded to a spoon 21.
  • the rotary motor 22 can rotate the bucket 21 about the axis of rotation A4 of the rotary motor 22, which is oriented perpendicular to the axis of rotation AI of the first hydraulic rotary motor 110.
  • the two plates 23a, 23b are connected to a quick-change device to which the spoon 21 is detachably attached.
  • the hydraulic lines 24 of the foremost hydraulic rotary motor 22 are advantageously also partially arranged in the first arm 110 and are thus protected against damage.
  • the hydraulic lines 24 can also be arranged completely in the first arm and installed in a rotary feedthrough in the rotary motor 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

La présente invention concerne un engin (10) qui présente au moins un bras pivotant, tel qu'une chargeuse sur chenilles ou un excavateur hydraulique comprenant une élinde fixe en une partie ou une élinde variable en deux parties. Le dispositif de travail (21) (godet, pelle, etc.) et/ou les bras (100) sont mis en rotation par des moteurs-couples hydrauliques (100, 210) autour d'axes (A1, A2) parallèles à la direction de la largeur des bras. De tels moteurs-couples autorisent une plus grande plage de pivotement, sont plus robustes et sont moins susceptibles d'être endommagés que les vérins différentiels courants. De plus, ils permettent de travailler dans des espaces de travail très limités.
PCT/EP2002/009357 2001-08-21 2002-08-21 Engin a moteur-couple hydraulique WO2003018917A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10140828 2001-08-21
DE10140828.5 2001-08-21

Publications (1)

Publication Number Publication Date
WO2003018917A1 true WO2003018917A1 (fr) 2003-03-06

Family

ID=7696052

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/009357 WO2003018917A1 (fr) 2001-08-21 2002-08-21 Engin a moteur-couple hydraulique

Country Status (1)

Country Link
WO (1) WO2003018917A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1927701A1 (fr) * 2006-11-28 2008-06-04 Thomas Lang Godet pour un véhicule de chargement
CN112900535A (zh) * 2019-12-03 2021-06-04 纳博特斯克有限公司 施工机械
CN113463701A (zh) * 2021-03-12 2021-10-01 北京理工大学 一种基于力矩电机的无液压混合动力挖掘机
CN115247430A (zh) * 2022-08-29 2022-10-28 三一海洋重工有限公司 一种抓具的减速装置及减速方法、抓料机
EP4083332A1 (fr) * 2021-03-31 2022-11-02 Nabtesco Corporation Dispositif de transmission d'entraînement et machine de construction

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB791648A (en) * 1955-08-25 1958-03-05 Poclain Atel Improvements in mechanical shovels
DE1118696B (de) * 1959-07-30 1961-11-30 Porsche Kg Ladeeinrichtung fuer Schlepper
DE1168342B (de) * 1960-01-22 1964-04-16 F E Weatherill Ltd Lademaschine mit einem in senkrechter Ebene ausschwenkbaren Ausleger
GB1087663A (en) * 1963-12-31 1967-10-18 Giovannetti Macchine S P A Improvements in or relating to shovel loaders
FR2530701A1 (fr) * 1982-03-10 1984-01-27 Marchetti Jean Pierre Godet multi-positions
JPH08151654A (ja) * 1994-11-28 1996-06-11 Komatsu Ltd 作業機の揺動装置
JPH11131522A (ja) * 1997-11-04 1999-05-18 Katsunori Tanada 掘削機におけるバケット等の作業具の作動装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB791648A (en) * 1955-08-25 1958-03-05 Poclain Atel Improvements in mechanical shovels
DE1118696B (de) * 1959-07-30 1961-11-30 Porsche Kg Ladeeinrichtung fuer Schlepper
DE1168342B (de) * 1960-01-22 1964-04-16 F E Weatherill Ltd Lademaschine mit einem in senkrechter Ebene ausschwenkbaren Ausleger
GB1087663A (en) * 1963-12-31 1967-10-18 Giovannetti Macchine S P A Improvements in or relating to shovel loaders
FR2530701A1 (fr) * 1982-03-10 1984-01-27 Marchetti Jean Pierre Godet multi-positions
JPH08151654A (ja) * 1994-11-28 1996-06-11 Komatsu Ltd 作業機の揺動装置
JPH11131522A (ja) * 1997-11-04 1999-05-18 Katsunori Tanada 掘削機におけるバケット等の作業具の作動装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 10 31 October 1996 (1996-10-31) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 10 31 August 1999 (1999-08-31) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1927701A1 (fr) * 2006-11-28 2008-06-04 Thomas Lang Godet pour un véhicule de chargement
CN112900535A (zh) * 2019-12-03 2021-06-04 纳博特斯克有限公司 施工机械
CN113463701A (zh) * 2021-03-12 2021-10-01 北京理工大学 一种基于力矩电机的无液压混合动力挖掘机
EP4083332A1 (fr) * 2021-03-31 2022-11-02 Nabtesco Corporation Dispositif de transmission d'entraînement et machine de construction
CN115247430A (zh) * 2022-08-29 2022-10-28 三一海洋重工有限公司 一种抓具的减速装置及减速方法、抓料机

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