WO1999035344A1 - Machine de chargement mobile a equipement de chargement frontal - Google Patents

Machine de chargement mobile a equipement de chargement frontal Download PDF

Info

Publication number
WO1999035344A1
WO1999035344A1 PCT/EP1998/005602 EP9805602W WO9935344A1 WO 1999035344 A1 WO1999035344 A1 WO 1999035344A1 EP 9805602 W EP9805602 W EP 9805602W WO 9935344 A1 WO9935344 A1 WO 9935344A1
Authority
WO
WIPO (PCT)
Prior art keywords
pivot point
lifting frame
rocker arm
tilt
cylinder
Prior art date
Application number
PCT/EP1998/005602
Other languages
German (de)
English (en)
Inventor
Heinrich Arck
Robert HÖLLWART
Gustav Leidinger
Original Assignee
O & K Orenstein & Koppel Aktiengesellschaft
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 O & K Orenstein & Koppel Aktiengesellschaft filed Critical O & K Orenstein & Koppel Aktiengesellschaft
Priority to EP98945307A priority Critical patent/EP1045941B1/fr
Priority to AT98945307T priority patent/ATE238464T1/de
Priority to DE59808101T priority patent/DE59808101D1/de
Priority to BR9813122-2A priority patent/BR9813122A/pt
Priority to AU92662/98A priority patent/AU9266298A/en
Priority to JP2000527716A priority patent/JP2002500301A/ja
Publication of WO1999035344A1 publication Critical patent/WO1999035344A1/fr
Priority to US09/610,776 priority patent/US6309171B1/en

Links

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
    • E02F9/0841—Articulated frame, i.e. having at least one pivot point between two travelling gear units
    • 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
    • E02F3/3411—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 of the Z-type

Definitions

  • the invention relates to a mobile loading machine with front loading equipment, in particular construction machine, with a lifting frame which is rotatably mounted with the rear end on a front frame part of the loading machine in a lifting frame pivot point and which can be raised and lowered by means of at least one lifting cylinder, at the front end of the lifting frame in one
  • a work shovel, fork or the like is articulated and a rocker arm is articulated in a rocker arm fulcrum in a central region of the lifting frame, the lower end of which is articulated in a rocker cylinder pivot point to a tilt cylinder which is articulated at the other end in a rocker cylinder pivot point on the frame part, and whose upper end is articulated in a tilting rod pivot point on a tilting rod which is articulated with its other end above the bucket pivot point in a tilting rod pivot point on the working bucket.
  • the tensile strength designed for the requirements of material loosening has its maximum value in the area of the horizontal blade (bottom) position, but drops sharply with increasing tilt angle.
  • the tear strength at the maximum tilt angle has dropped so far in the lifting height of the bucket that is usual for transport travel that, in the event of strong braking decelerations and / or very uneven terrain, the bucket can no longer be pressed with the necessary force, which causes strong impacts associated with corresponding noise development.
  • Parallel kinematics are generally used for industrial purposes. Such parallel kinematics enable a blade guide that is parallel via the lifting movement of the lifting frame, and there is also a more favorable course of the holding forces in the upper lifting frame area when tipping out. There is also a continuous increase in the angular velocity, particularly in the last angular range, when tipping out, which enables material stuck in the blade to be tapped out.
  • a disadvantage of this system is that to release the material, the tilting cylinder or cylinders are only subjected to hydraulic pressure on their annular surface, so that they must be dimensioned accordingly large.
  • a generic loading machine with front loading equipment which in principle consists of only a three-part kinematic chain, namely a rocker cylinder, a rocker arm and a rocker arm, the rocker cylinder can be attached to the rocker arm in different positions, so that different kinematics geometries are feasible to meet different requirements.
  • this known kinematics is still in need of substantial improvement.
  • the object of the invention is to further improve the kinematics system of a generic loading machine in order to combine all the advantageous properties of the Z-kinematics, the parallel kinematics and the industrial kinematics and to avoid their disadvantages, the effort and thus the costs being those of a conventional Z - should not exceed kinematics.
  • a second tilt cylinder pivot point for the tilt cylinder is provided on the rocker arm, the distance of the second upper tilt cylinder pivot point from the first lower tilt cylinder pivot point being between 0.01 and 0.12 in relation to the lifting frame length.
  • the tear forces remain almost constant over the lifting height of the lifting frame. Therefore, with the system according to the invention, when the material is detached from a solid wall, it can still be broken with high tear strength even in the upper stroke area.
  • the dumping is done by introducing hydraulic oil into the tilt cylinder annulus.
  • the tipping speed of the implement increases disproportionately in the last rotation angle range, which means that the bucket moves up to a tipping angle of 30 to 35 °, at which the material is largely emptied, at a speed that can be easily controlled by the driver, but the stops at the maximum tipping angle with a high Speed reached, which allows the tapping of stuck material residues.
  • the lifting frame advantageously has a crossbeam which is arranged between the rocker arm pivot point and the bucket pivot point and carries the rocker arm by means of the rocker arm bracket. This crossbar is preferably arranged at a distance from the rocker arm pivot point that is greater than the distance between the rocker arm pivot point and the rocker arm pivot point.
  • the tilt cylinder is advantageously arranged approximately parallel to the longitudinal axis of the lifting frame.
  • the rocker arm is arranged correspondingly far from the bucket pivot point and as high as possible above the frame axis, namely in such a way that the ratio of the distance from the rocker cylinder articulation point to the rocker arm pivot point to the lifting frame length between rocker arm and bucket pivot point is between 0.4 and 0.5.
  • the requirement of high tearing forces is applied by applying the hydraulic pressure to the full surface of the tilt cylinder.
  • the tearing forces decrease less with increasing tilt angle than with the Z-kinematics. It is a characteristic of the kinematics according to the invention that the tearing forces increase again at a tipping angle between 35 and 40 °, whereas in the Z-kinematics they would drop towards zero if the tipping was continued.
  • the front end of the piston rod of the tilting cylinder is pressed against the tilting rod with high force in the region of the tilting rod pivot point on the blade, so that the latter does not detach from the stop even at higher deceleration values as a result of braking or uneven terrain, but instead maintains their position relative to the lifting frame and thus also to the vehicle.
  • the property of the rupture force increasing again from the specified range of the tilt angle allows a larger maximum tilt angle to be carried out, as a result of which heaped material can be transported over uneven terrain with a reduced risk of partial loss.
  • the upper part of the rocker arm which swivels backwards when the implement tilts, frees up a larger mounting space for this, which is restricted in the Z-kinematics by the rocker arm moving forward.
  • the possible tipping angle due to the given tilt cylinder stroke when the blade cutting edge is placed on the ground is so large that the angle is limited not only by the tilt cylinder but also by the stops between the blade and the lifting frame. In this bucket position, this means a tipping angle of significantly more than 90 °, which enables both vertical parting of excavation pit walls and the support by tilting the bucket to free the loader that is stuck in rough terrain. Since the Z-kinematics only has a tipping angle of approx.
  • the bucket that is pierced into the bottom quickly releases from the bucket during the tilting movement.
  • the blade lies against the lifting frame, so that the large forces resulting from the pushing force as well as the impacts resulting from the uneven yielding of the base directly through the blade stops in the vehicle to be directed.
  • the kinematics according to the invention have a considerably higher holding force than the previously known designs, so that this does not give in due to the pressure relief valve of the tilting cylinder responding.
  • the implement is tilted back during the lifting process.
  • this parallelism can be achieved by changing the articulation point of the tilt cylinder eye on the lower part of the rocker arm. This can be done either by repositioning the tilt cylinder into the second upper tilt cylinder pivot point or by moving the pivot point within the two brackets of the rocker arm using conventional technical means.
  • the holding force is reduced here, but it still exceeds the requirements that result from the payload permissible for the machine when using the forklift.
  • the crossbar in the raised lifting frame position in order to achieve optimal visibility on the working tools as close as possible to the blade pivot point.
  • the arrangement of the tilting cylinder in its position relative to the lifting frame is chosen such that its longitudinal axis is approximately parallel and below the lifting frame axis in each lifting frame position and therefore in the upper lifting range in which the emptying of the Shoveling into the transport vehicles takes place, the selected position results in favorable visibility, since only the relatively thin piston rod of the tilt cylinder is in the driver's field of vision. Even in the lower lifting frame position when picking up material, the tilt cylinder is in a position that does not obstruct the view.
  • FIG. 1 in side view of a mobile according to the invention
  • FIG. 6 in side view of a loading machine according to the invention in excavator operation when filling a transport vehicle
  • Fig. 7 is a side view of the kinematics with lifting frame and tilted bucket in the transport position.
  • a mobile loading machine is generally designated L.
  • This loading machine L has a front frame part 13, to which the actual universal kinematics according to the invention is articulated, the exact structure of which can be seen from FIGS. 3 to 6.
  • the kinematics initially have a lifting frame 1, the lifting frame axis of which is designated by 16.
  • This lifting frame 1 is rotatably supported at its rear end in a lifting frame pivot point 14 on the frame part 13 of the loading machine.
  • the lifting frame 1 usually consists of two parallel frame parts.
  • On the frame part 13, an only indicated lifting cylinder 2 is rotatably mounted, which is articulated with its other end on the lifting frame 1.
  • the lifting frame 1 can thus be raised and lowered, namely by the Lifting frame pivot point 14.
  • a working shovel 5 is articulated in a bucket pivot point 6, and in the region of the front end the lifting frame 1 has a crossbar 10 between its two lifting frame parts, on which two parallel rocker arm brackets 11 are arranged, at the ends of which in a rocker arm pivot point 15 a rocker arm 3 is articulated.
  • the lower end of the rocker arm 3 is articulated in a lower first rocker cylinder pivot point 8 or an upper second rocker cylinder pivot point 9 located above it with a rocker cylinder 7 which is articulated at its other end in a rocker cylinder pivot point 11 on the frame part 13 of the loading machine.
  • the upper end of the rocker arm 3 is articulated in a rocker rod pivot point 17 on a rocker rod 4, which is articulated with its other end above the bucket pivot point 6 in a rocker rod pivot point 21 on the working blade 5.
  • the rocker arm 3 can be moved with the rocking rod 4 by extending or retracting the piston rod 12 of the rocking cylinder 7 and the bucket 5 can thus be pivoted. If the piston rod 12 of the tilt cylinder 7 is articulated in the tilt cylinder articulation point 8 on the rocker arm 3, the kinematics are suitable for a bucket function, and the function is then the same as for a Z kinematics (FIG. 1).
  • a / 1 0.3 to 0.35
  • b / 1 0.14 to 0.17
  • c / 1 0.2 to 0.3
  • h / 1 0.08 to 0.12
  • s / 1 0.4 to 0.5
  • g / 1 0.07 to 0.08
  • f / 1 0.06 to 0.07
  • k / 1 0.65 to 0.75. It is also provided that the distance d between the crossmember 10 between the rocker arm pivot point 15 and the blade pivot point 6 is greater than b + r.
  • a stop 19 of the eye of the piston rod 12 of the tilt cylinder 7 is provided against the eye of the tilt rod 4 or against the blade 6.
  • two blade stops 20 are provided against the lifting frame 1 in the tilted-out position.
  • FIG. 7 Transport position shown.
  • the ratio of the distance m of the axis of the piston rod 12 of the rocker cylinder 7 to the rocker arm pivot point 15 to the distance n of the axis of the rocker rod 4 to the blade pivot point 6, that is to say m / n is on the order of 0.65 to 0.7.

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)
  • Vehicle Body Suspensions (AREA)

Abstract

L'invention concerne une machine de chargement mobile à équipement de chargement frontal, notamment un engin de chantier, qui comprend un châssis élévateur (1) monté rotatif dans un point d'appui dudit châssis élévateur (14), avec son extrémité arrière sur une partie avant (13) du châssis de la machine de chargement (L). Ce châssis élévateur peut être élevé et abaissé à l'aide d'au moins un cylindre de levage (2). A l'extrémité avant du châssis élévateur (1), une pelle de travail (5), une fourche (5') ou similaire est articulée dans un point d'appui de la pelle (6), et un levier oscillant (3) est articulé dans un point d'appui dudit levier oscillant (15), dans une zone médiane du châssis élévateur (1). L'extrémité inférieure du levier oscillant est reliée de manière articulée avec un cylindre de basculement, en un point d'appui dudit cylindre de basculement (8). A l'autre extrémité, le levier oscillant est articulé sur la partie du châssis (13) en un point d'appui du cylindre de basculement (11) et son extrémité supérieure est articulée sur une tige oscillante (4), articulée quant à elle par son autre extrémité au-dessus du point d'appui de la pelle (6) en un point d'appui du levier oscillant (21) sur la pelle de travail (5). L'invention vise à perfectionner le système cinématique, ce qui est possible par des rapports géométriques spéciaux.
PCT/EP1998/005602 1998-01-05 1998-09-04 Machine de chargement mobile a equipement de chargement frontal WO1999035344A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP98945307A EP1045941B1 (fr) 1998-01-05 1998-09-04 Machine de chargement mobile a equipement de chargement frontal
AT98945307T ATE238464T1 (de) 1998-01-05 1998-09-04 Mobile lademaschine mit frontladeausrüstung
DE59808101T DE59808101D1 (de) 1998-01-05 1998-09-04 Mobile lademaschine mit frontladeausrüstung
BR9813122-2A BR9813122A (pt) 1998-01-05 1998-09-04 Máquina de carga móvel com equipamento de carga frontal
AU92662/98A AU9266298A (en) 1998-01-05 1998-09-04 Mobile loading machine with front loading equipment
JP2000527716A JP2002500301A (ja) 1998-01-05 1998-09-04 前側積込み装備を備えた自走式積込み機械
US09/610,776 US6309171B1 (en) 1998-09-04 2000-07-06 Mobile loading machine with front-end loading equipment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19800164.9 1998-01-05
DE19800164A DE19800164A1 (de) 1998-01-05 1998-01-05 Mobile Lademaschine mit Frontladeausrüstung

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/610,776 Continuation US6309171B1 (en) 1998-09-04 2000-07-06 Mobile loading machine with front-end loading equipment

Publications (1)

Publication Number Publication Date
WO1999035344A1 true WO1999035344A1 (fr) 1999-07-15

Family

ID=7854014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/005602 WO1999035344A1 (fr) 1998-01-05 1998-09-04 Machine de chargement mobile a equipement de chargement frontal

Country Status (7)

Country Link
EP (1) EP1045941B1 (fr)
JP (1) JP2002500301A (fr)
AT (1) ATE238464T1 (fr)
AU (1) AU9266298A (fr)
BR (1) BR9813122A (fr)
DE (2) DE19800164A1 (fr)
WO (1) WO1999035344A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102493507A (zh) * 2011-12-28 2012-06-13 山东临工工程机械有限公司 正转八连杆机构大理石托叉
CN102817384A (zh) * 2012-09-19 2012-12-12 江苏柳工机械有限公司 滑移转向装载机工作装置
CN107745975A (zh) * 2017-10-24 2018-03-02 天津市永昌焊丝有限公司 一种粉料翻转机箱及其输送装置
CN108381106A (zh) * 2018-03-19 2018-08-10 无锡洲翔成套焊接设备有限公司 一种双拼焊矫翻转装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10012389B4 (de) * 2000-03-14 2005-03-17 O & K Orenstein & Koppel Ag Arbeitsmaschine
DE102004027203B4 (de) * 2004-03-29 2010-01-14 Komatsu Hanomag Gmbh Arbeitsfahrzeug
JP6223300B2 (ja) 2013-10-04 2017-11-01 株式会社クボタ フロントローダ
EP2857590B1 (fr) * 2013-10-04 2022-04-06 Kubota Corporation Chargeur frontal

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711257A (en) * 1952-03-14 1955-06-21 Jaeger Machine Co Portable shovel loader
FR1563358A (fr) * 1967-04-21 1969-04-11
US3642159A (en) * 1970-08-19 1972-02-15 Massey Ferguson Inc Earthworking vehicle
US4364705A (en) * 1980-07-07 1982-12-21 J. I. Case Company Loader mechanism
WO1990006403A1 (fr) * 1988-12-06 1990-06-14 Vme Industries Sweden Ab Systeme d'elements articules pour des machines de chargement
US5201235A (en) * 1992-04-20 1993-04-13 Caterpillar Inc. Linkage for loader bucket or other material handling device
US5695310A (en) * 1996-07-12 1997-12-09 Caterpillar Inc. Linkage arrangement for a loading machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156488A (en) * 1977-07-18 1979-05-29 Caterpillar Tractor Co. Cross-member assembly
US4609322A (en) * 1984-08-13 1986-09-02 Caterpillar Tractor Co. Mounting for a linkage arrangement
DE3808313A1 (de) * 1988-03-12 1989-09-28 Kramer Werke Gmbh Arbeitsfahrzeug, insbesondere schaufellader
DE19702624A1 (de) * 1997-01-25 1998-07-30 Zettelmeyer Gmbh Lademaschine mit einer Anlenkkinematik für verschiedene Anbaugeräte, insbesondere Radlager-Kinematik

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711257A (en) * 1952-03-14 1955-06-21 Jaeger Machine Co Portable shovel loader
FR1563358A (fr) * 1967-04-21 1969-04-11
US3642159A (en) * 1970-08-19 1972-02-15 Massey Ferguson Inc Earthworking vehicle
US4364705A (en) * 1980-07-07 1982-12-21 J. I. Case Company Loader mechanism
WO1990006403A1 (fr) * 1988-12-06 1990-06-14 Vme Industries Sweden Ab Systeme d'elements articules pour des machines de chargement
US5201235A (en) * 1992-04-20 1993-04-13 Caterpillar Inc. Linkage for loader bucket or other material handling device
US5695310A (en) * 1996-07-12 1997-12-09 Caterpillar Inc. Linkage arrangement for a loading machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102493507A (zh) * 2011-12-28 2012-06-13 山东临工工程机械有限公司 正转八连杆机构大理石托叉
CN102817384A (zh) * 2012-09-19 2012-12-12 江苏柳工机械有限公司 滑移转向装载机工作装置
CN102817384B (zh) * 2012-09-19 2014-09-24 江苏柳工机械有限公司 滑移转向装载机工作装置
CN107745975A (zh) * 2017-10-24 2018-03-02 天津市永昌焊丝有限公司 一种粉料翻转机箱及其输送装置
CN108381106A (zh) * 2018-03-19 2018-08-10 无锡洲翔成套焊接设备有限公司 一种双拼焊矫翻转装置
CN108381106B (zh) * 2018-03-19 2024-04-05 无锡洲翔成套焊接设备有限公司 一种双拼焊矫翻转装置

Also Published As

Publication number Publication date
BR9813122A (pt) 2000-10-10
AU9266298A (en) 1999-07-26
ATE238464T1 (de) 2003-05-15
DE19800164A1 (de) 1999-07-22
DE59808101D1 (de) 2003-05-28
EP1045941B1 (fr) 2003-04-23
EP1045941A1 (fr) 2000-10-25
JP2002500301A (ja) 2002-01-08

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