WO2014098652A1 - Agencement de châssis avant pour une machine de travail et chargeuse sur roues - Google Patents

Agencement de châssis avant pour une machine de travail et chargeuse sur roues Download PDF

Info

Publication number
WO2014098652A1
WO2014098652A1 PCT/SE2012/000207 SE2012000207W WO2014098652A1 WO 2014098652 A1 WO2014098652 A1 WO 2014098652A1 SE 2012000207 W SE2012000207 W SE 2012000207W WO 2014098652 A1 WO2014098652 A1 WO 2014098652A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
front frame
frame arrangement
arrangement
working machine
Prior art date
Application number
PCT/SE2012/000207
Other languages
English (en)
Inventor
Johan Ohlsson
Joakim UNNEBÄCK
Original Assignee
Volvo Construction Equipment Ab
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 Volvo Construction Equipment Ab filed Critical Volvo Construction Equipment Ab
Priority to PCT/SE2012/000207 priority Critical patent/WO2014098652A1/fr
Publication of WO2014098652A1 publication Critical patent/WO2014098652A1/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
    • E02F3/283—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
    • 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
    • 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

Definitions

  • the present invention relates to a front frame arrangement for a working machine, for supporting a pair of front wheels.
  • the invention also relates to a wheel loader comprising a front frame arrangement as mentioned above.
  • a working machine is provided with a bucket, container or other type of implement for lifting, carrying and/or transporting a load.
  • a working machine may be operated with large and heavy loads in areas where there are no roads, for example for transports in connection with road or tunnel building, sand pits, mines and similar environments.
  • a working machine in the form of a wheel loader is also usually provided with a prime mover, such as an internal combustion engine, a transmission line, and a gearbox for supplying torque to the driving wheels of the wheel loader.
  • a prime mover such as an internal combustion engine, a transmission line, and a gearbox for supplying torque to the driving wheels of the wheel loader.
  • the internal combustion engine has to supply energy to one or more hydraulic pumps of a hydraulic system of the wheel loader.
  • a hydraulic system is used for lifting operations and/or steering the wheel loader.
  • Hydraulic working cylinders are arranged for lifting and lowering a lifting arm unit, on which a bucket or other type of implement, attachment or working tool, for example forks, is mounted. By use of another hydraulic working cylinder, an implement such as a bucket can also be tilted or pivoted. Furthermore, hydraulic cylinders known as steering cylinders are arranged to turn the wheel loader by means of relative movement of a front body part and a rear body part of the wheel loader.
  • a traditional wheel loader comprises a front body part with a rigid front axle which is mounted to a front frame arrangement and which is adapted for supporting the two front wheels of the wheel loader.
  • the front axle normally consists of a cast or welded housing having rotating internals and being bolted to the front frame.
  • the front frame arrangement is normally arranged to support a lift
  • the front frame, the wheel axle and the lifting arm are designed to fulfil requirements regarding a specified loading capacity, flexibility of the lift arrangement, visibility and ease of operation for the driver and other operation parameters.
  • a front frame arrangement for a working machine for supporting a pair of front wheels
  • said front frame arrangement comprises a first arm and a second arm which are arranged at a predetermined distance from each other, each of the first arm and the second arm having a main extension direction intended to be substantially in parallel to the longitudinal direction of a working machine, thereby creating a space between the first arm and the second arm for accommodating at least a portion of a lift arrangement of a working machine in said space, each of the first and second arms having a means for individual suspension of a front wheel.
  • the front frame arrangement according to the invention comprises individual suspension of a front wheel for each of said arms, and also that the invention lacks the traditional front axle connecting the front wheels, means that the above-mentioned space can be created.
  • the space is adapted for accommodating the lift arrangement, at least partly.
  • the space between the arms is suitably positioned at a position generally between the front wheels.
  • said means for suspension comprises a hub motor for driving each front wheel, said hub motor preferably being an electric motor
  • the arrangement leads to a reduced weight of the working machine.
  • the combined weight of a front frame with integrated hub motors can be reduced as compared with the weight of a traditional front axle and front frame.
  • the front frame arrangement is adapted to support a lift arrangement comprising an implement and a lifting arm. Due to the fact that said space is created, a more flexible and effective use of the available space between the arms is provided during operation of the lift arrangement.
  • the invention allows the lifting arrangement to be lowered and positioned between the arms. This means that the handling of an implement such as a bucket can be improved. For example, the linkage and working load can be displaced closer to the front wheels which improves tipping load and machine performance. Furthermore, the invention leads to improved visibility.
  • the front frame arrangement according to the invention is suitably arranged for pivotally supporting the lifting arm.
  • the lifting arm can be arranged to pivot about a substantially horizontal axis extending generally transverse to the longitudinal direction of the working machine.
  • the pivoting support of the lifting arm is preferably obtained by arranging the lifting arm pivotally in the first and second arms.
  • the first arm and a second arm are suitably shaped as closed, generally boxlike structures, generally having a triangular form with sufficient strength and stiffness, wherein an upper, rear corner of such a triangle defines a support point for the lifting arm.
  • a lower, front corner of such a triangle suitably defines a support for each one of the front wheels.
  • the lower part of each arm is suitably connected by means of a connecting element.
  • FIG. 1 is a perspective view of a working machine having a front frame arrangement according to the invention
  • Fig. 2 is a schematic perspective view showing certain parts of the front frame arrangement
  • Fig. 3 is a perspective view of a cut-out part of a front frame arrangement according to the invention.
  • FIG. 1 is a perspective view of a working machine 1 in which the present invention can be implemented.
  • the invention is implemented in a working machine 1 in the form of a wheel loader which is intended for use in construction work, road and tunnel building and similar situations.
  • the wheel loader 1 comprises a rear body part 2 and a front body part 3.
  • the rear body part 2 comprises for example an engine compartment with a combustion engine, a gearbox etc. (not shown in Fig. 1), and also a driver ' s compartment.
  • the front body part 3 comprises a front frame arrangement 4 which is arranged for supporting a pair of front wheels 5, 6.
  • the front frame arrangement 4 according to the invention will be described in greater detail below.
  • the rear body part 2 is arranged for supporting a pair of rear wheels 7, 8.
  • the combustion engine and gearbox are used for operating the rear wheels 7, 8 of the wheel loader 1.
  • the combustion engine can also be used for operating electric and/or hydraulic devices, which for example can be used to operate lifting arrangements and similar in the wheel loader 1.
  • the front frame arrangement 4 comprises a first arm 9 and a second arm 10.
  • the term "arm” is intended to describe a relatively thin and flat component which extends substantially along the longitudinal direction of the wheel loader 1.
  • Each one of the first arm 9 and the second arm 10 can preferably be formed as a generally closed, box-like structure.
  • the arms are positioned at a predetermined distance from each other. The distance is indicated by means of the letter “d” in Fig. 1.
  • the first arm 9 and the second arm 10 are oriented with a generally flat side of each box-like structure facing towards each other.
  • each one of the first arm 9 and the second arm 10 extends along a main direction which is substantially parallel to the longitudinal direction of the wheel loader 1.
  • the arms 9, 10 are preferably parallel to each other but the invention is not limited to such an arrangement only, i.e. the arms 9, 10 can be arranged in a slightly non-parallel manner without departing from the scope of the invention.
  • the wheel loader 1 is provided with a lift arrangement, which in turn comprises a lifting arm 11 and an implement 12, wherein the implement 12 suitably is in the form of a load-carrying bucket, as shown in Fig. 1.
  • a lift arrangement which in turn comprises a lifting arm 11 and an implement 12, wherein the implement 12 suitably is in the form of a load-carrying bucket, as shown in Fig. 1.
  • the invention is not limited to such an implement only but can be realized with other types of implements such as other load-carrying devices or working tools.
  • Each one of the first arm 9 and the second arm 10 is provided with means for suspension of said front wheels 5, 6.
  • the embodiment shown has means for suspension comprising a hub motor 13, 14 for each wheel 5, 6.
  • the hub motors 13, 14 are positioned inside the front wheels 5, 6 as indicated in a schematic manner in Fig. 1.
  • the hub motors 13, 14 are preferably of electric type.
  • FIG. 2 is a simplified perspective view of certain parts of the front frame arrangement 4 according to the invention. Due to the fact that the first arm 9 and the second arm
  • a space 18 is created between the first arm 9 and the second arm 10.
  • the intention with this space 18 is to accommodate at least a portion of the lift arrangement, i.e. at least a portion of the lifting arm 11 and/or the implement 12.
  • the invention relies on the principle that the lift arrangement can be at least partly positioned within the space 8.
  • the lifting arm 11 can be positioned in a lowermost position in which it extends through the space 18 (as shown in Fig. 1). In other words, a substantial part of the lifting arm
  • Fig. 3 is a perspective view of a cut-out section of an embodiment of the front frame arrangement according to the invention, there is shown that the arms 9, 10 (of which only the first arm 9 is visible in Fig. 3) are generally shaped as box-like structures having a triangular shape.
  • the lifting arm 11 is preferably pivotally arranged in the first and second arms 9, 10. More precisely, an upper, rear corner of each of said triangular structures formed by the arms 9, 10 constitutes a support point for the lifting arm 11 so that said lifting arm 11 can be pivoted about an geometrical horizontal axis 19.
  • the lifting arm 1 is arranged in the first and second arms 9, 10 in a manner so that it can be pivoted about the substantially horizontal axis 19 which extends substantially transverse to the longitudinal direction of the wheel loader 1.
  • each of said triangular structure - which is situated at the front of each arm 9, 10 - constitutes a support for each of the front wheels 5, 6 with their hub motors 13, 14.
  • the first arm 9 and the second arm 10 can be designed as closed, generally box-like structures.
  • the geometry and material properties of the arms 9, 10 are chosen in order to obtain the necessary stiffness and strength of the arms 9, 10.
  • the front frame arrangement 4 can comprise a bottom component 20 which serves as a connecting element connecting the lower parts of the first arm 9 and the second arm 10 to each other. In this manner, the complete front frame arrangement 4 can be given the desired stiffness and strength.
  • the front frame arrangement 4 suitably comprises a rear component 21 which also contributes to connecting the first arm 9 and the second arm 10 with each other.
  • the rear component 21 can be provided with a coupling unit, such as an upper pivot bracket 22 and a lower pivot bracket 23, for connecting the front body part 3 (cf. Fig. 1) to the rear body part 2 in a pivoting manner.
  • a front frame arrangement 4 which - in addition to creating a space 18 between the first arm 9 and the second arm 10 for accommodating the lift arrangement 11 - also serves as a coupling unit for connecting the rear body part 2 and the front body part 3 to each other.

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)

Abstract

L'invention concerne un agencement de châssis avant (4) pour une machine de travail (1), destiné à soutenir une paire de roues avant (5, 6). L'agencement de châssis avant (4) comprend un premier bras (9) et un second bras (10), qui sont disposés sensiblement en parallèle l'un par rapport à l'autre à une distance prédéfinie (d) l'un de l'autre. Chacun parmi le premier bras (9) et le second bras (10) a une direction d'extension principale prévue pour être sensiblement parallèle à la direction longitudinale d'une machine de travail (1), ce qui crée un espace entre le premier bras (9) et le second bras (10) pour loger un agencement de levée (11, 12) d'une machine de travail (1) dans ledit espace. En outre, chacun des premier et second bras (9, 10) possède un moyen pour la suspension individuelle d'une roue avant (5, 6). L'invention concerne également une chargeuse sur roues comprenant un tel agencement de châssis avant.
PCT/SE2012/000207 2012-12-17 2012-12-17 Agencement de châssis avant pour une machine de travail et chargeuse sur roues WO2014098652A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/SE2012/000207 WO2014098652A1 (fr) 2012-12-17 2012-12-17 Agencement de châssis avant pour une machine de travail et chargeuse sur roues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2012/000207 WO2014098652A1 (fr) 2012-12-17 2012-12-17 Agencement de châssis avant pour une machine de travail et chargeuse sur roues

Publications (1)

Publication Number Publication Date
WO2014098652A1 true WO2014098652A1 (fr) 2014-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2012/000207 WO2014098652A1 (fr) 2012-12-17 2012-12-17 Agencement de châssis avant pour une machine de travail et chargeuse sur roues

Country Status (1)

Country Link
WO (1) WO2014098652A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2531765A (en) * 2014-10-29 2016-05-04 Bamford Excavators Ltd An undercarriage for a working machine
WO2017061911A1 (fr) * 2015-10-06 2017-04-13 Volvo Construction Equipment Ab Procédé pour amortir des mouvements d'une machine de travail
WO2017164785A1 (fr) * 2016-03-24 2017-09-28 Volvo Construction Equipment Ab Unité avant de chargeuse sur pneus, et chargeuses sur pneus
US10119247B2 (en) 2014-10-29 2018-11-06 J. C. Bamford Excavators Limited Working machine
CN108779626A (zh) * 2016-01-22 2018-11-09 沃尔沃建筑设备公司 装载机车辆
CN109070954A (zh) * 2016-03-24 2018-12-21 沃尔沃建筑设备公司 轮式装载机前部单元和轮式装载机
EP4112818A3 (fr) * 2021-06-28 2023-01-11 Gebroeders Geens N.V. Chargeur compact articulé

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937345A (en) * 1974-11-15 1976-02-10 Wagner Mining Equipment, Inc. Shovel loader with ejector bucket
US4163498A (en) * 1977-12-13 1979-08-07 Caterpillar Tractor Co. Tower assembly
AT392444B (de) * 1984-10-30 1991-03-25 Masch Und Metallwarenfabrik Vi Gelaendegaengiges, zwei- oder mehrachsiges, gummibereiftes arbeitsfahrzeug
US5120182A (en) * 1988-01-04 1992-06-09 Hvolka Dusan J Multi-purpose articulated bucket lift digging and hauling vehicle
US20100098522A1 (en) * 2006-11-24 2010-04-22 Hiroyuki Shioji Wheel loader

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937345A (en) * 1974-11-15 1976-02-10 Wagner Mining Equipment, Inc. Shovel loader with ejector bucket
US4163498A (en) * 1977-12-13 1979-08-07 Caterpillar Tractor Co. Tower assembly
AT392444B (de) * 1984-10-30 1991-03-25 Masch Und Metallwarenfabrik Vi Gelaendegaengiges, zwei- oder mehrachsiges, gummibereiftes arbeitsfahrzeug
US5120182A (en) * 1988-01-04 1992-06-09 Hvolka Dusan J Multi-purpose articulated bucket lift digging and hauling vehicle
US20100098522A1 (en) * 2006-11-24 2010-04-22 Hiroyuki Shioji Wheel loader

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11111649B2 (en) 2014-10-29 2021-09-07 J. C. Bamford Excavators Limited Working machine
GB2531765B (en) * 2014-10-29 2017-09-13 Bamford Excavators Ltd An undercarriage for a working machine
US10119247B2 (en) 2014-10-29 2018-11-06 J. C. Bamford Excavators Limited Working machine
GB2531765A (en) * 2014-10-29 2016-05-04 Bamford Excavators Ltd An undercarriage for a working machine
WO2017061911A1 (fr) * 2015-10-06 2017-04-13 Volvo Construction Equipment Ab Procédé pour amortir des mouvements d'une machine de travail
US11933015B2 (en) 2016-01-22 2024-03-19 Volvo Construction Equipment Ab Loader vehicle
CN108779626A (zh) * 2016-01-22 2018-11-09 沃尔沃建筑设备公司 装载机车辆
EP3405620A4 (fr) * 2016-01-22 2019-10-23 Volvo Construction Equipment AB Véhicule chargeur
CN109070954A (zh) * 2016-03-24 2018-12-21 沃尔沃建筑设备公司 轮式装载机前部单元和轮式装载机
US10975548B2 (en) 2016-03-24 2021-04-13 Volvo Construction Equipment Ab Wheel loader front unit and a wheel loader
US10815642B2 (en) 2016-03-24 2020-10-27 Volvo Construction Equipment Ab Wheel loader front unit and a wheel loader
WO2017164785A1 (fr) * 2016-03-24 2017-09-28 Volvo Construction Equipment Ab Unité avant de chargeuse sur pneus, et chargeuses sur pneus
EP4112818A3 (fr) * 2021-06-28 2023-01-11 Gebroeders Geens N.V. Chargeur compact articulé

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