EP0670391A1 - A compact multi-use mobile work tool - Google Patents

A compact multi-use mobile work tool Download PDF

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Publication number
EP0670391A1
EP0670391A1 EP95830070A EP95830070A EP0670391A1 EP 0670391 A1 EP0670391 A1 EP 0670391A1 EP 95830070 A EP95830070 A EP 95830070A EP 95830070 A EP95830070 A EP 95830070A EP 0670391 A1 EP0670391 A1 EP 0670391A1
Authority
EP
European Patent Office
Prior art keywords
segment
hinged
rotatable platform
lever
pivot
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.)
Granted
Application number
EP95830070A
Other languages
German (de)
French (fr)
Other versions
EP0670391B1 (en
Inventor
Riccardo Magni
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.)
Manitou Costruzioni Industriali SRL
Original Assignee
Manitou Costruzioni Industriali SRL
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 Manitou Costruzioni Industriali SRL filed Critical Manitou Costruzioni Industriali SRL
Publication of EP0670391A1 publication Critical patent/EP0670391A1/en
Application granted granted Critical
Publication of EP0670391B1 publication Critical patent/EP0670391B1/en
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
    • E02F3/28—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
    • 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
    • E02F3/307—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 the boom and the dipper-arm being connected so as to permit relative movement in more than one plane
    • 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

Definitions

  • the invention relates to a compact multiuse mobile work tool.
  • the prior art teaches compact multiuse mobile work tools exhibiting masses such as to enable them to be used inside buildings for all principal operations for which vehicles designed for use on building sites are designated.
  • mini-loader blades mini-excavators and mini-elevators, but as yet no compact work tools considered to be multi-use in the sense that they are able, when apposite work tools are applied, to perform the tasks usually associated with building sites.
  • 1 denotes a frame provided with two pairs of wheels 2.
  • a pair of tracks might be fitted instead of the wheels.
  • a rotatable platform 3 is pivoted about a vertical axis perpendicular to a plane identified by the axes of the wheels 2.
  • a motor 4 located posteriorly thereon; a driver's cockpit 5 for the operator, and a manoeuvring arm 6, situated in a decentralized position by the side of the cockpit 5.
  • the manoeuvring arm 6 is constituted by two principal segments 7 and 8, which are hinged one to the other at respective ends thereof.
  • the first segment 7 exhibits a first end hinged by a pivot 17 at a front end of the rotatable platform 3.
  • the second segment 8 is instead provided, at a free end thereof, with a rapid universal attachment 9 for tools or equipment, said rapid universal attachment 9 being is equipped with hydraulically-activated organs 10 for manoeuvring tools and equipment in the articulation plane of the arm 6.
  • the first segment 7 is brought to rotate in two directions about the pivot 17 by a mechanical lever system comprising: a lever 11 hinged at a first end thereof to the rotatable platform 3 by means of a pivot 15; a connecting member 12, hinged to a second end of the lever 11 and to the first segment 7, at a point situated at a predetermined distance from the axis of the pivot 17; a hydraulic cylinder 13 exhibiting a bottom end which is hinged to the rotatable platform 3 and a stem end hinged, by means of a pivot 14, to an intermediate point of the lever 11.
  • the lever system constituted by the lever 11 and the connecting member 12, constitutes together with the first segment 7 and the rotatable platform 3 a four-bar hinge wherein the fixed member is constituted by the rotatable platform 3 itself.
  • the entire lever system is proportioned such that the lever 11 exhibits a shorter length than the connecting member 12, which connecting member 12 pivot axis to the first segment 7, in the position represented in figure 1, is located at a predetermined distance from the axis of the pivot 17.
  • Said pivot 17 is located in an advanced position and situated inferiorly to (and is parallel to) the axis of the pivot 14 by means of which the lever is hinged to the rotatable platform 3.
  • a complete series of tools and equipment can be coupled to the rapid universal attachment 9.
  • a loading scuttle 20 can be applied to the rapid universal attachment 9.
  • the machine, fitted with the loading scuttle 20, can function as a self-propelled loader of the type known as skid steer loader.
  • the loading scuttle 20 manoeuvrability is achieved through the arm 6. Horizontal movements are obtained by movements of the entire vehicle on the wheels 2 (or tracks), combined with rotation movements of the rotatable platform 3.
  • the machine becomes a mini-excavator; also in this case the manoeuvring of the bucket 21 is realized by means of the manoeuvring arm 6.
  • the ability of the rotatable platform 3 to rotate about a vertical axis with respect to the frame 1 allows operation in every direction, at 360 degrees, without having recourse to movements of the chuck 2. Thanks to its conformation and to the conformation of the mechanism producing the rotation of the first segment first segment 7, the manoeuvring arm 6 has a high manoeuvrability in a vertical plane.
  • the rotation of the whole rotatable platform 3 about a vertical axis means that the arm 6 can operate in any direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanical Control Devices (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Manipulator (AREA)

Abstract

The invention relates to a compact multiuse mobile work tool, comprising a frame (1) and provided with wheels (2), whereon a rotatable platform (3) is hinged about a vertical axis. On the rotatable platform (3) are arranged: a motor (4), housed posteriorly, and a cockpit (5) for an operator, by a side of which is located, in a decentralized position, an articulated manoeuvring arm (6), composed of a first segment (7) and a second segment (8), reciprocally hinged. The second segment (8) bears at a free end thereof, a rapid universal attachment (9) for tools or equipment, while the first segment (7) thereof is hinged to the rotatable platform (3) by means of a pivot (17) and is activated to rotate about the pivot (17) by a hydraulic lever system comprising a connecting member (12) and a lever (11) commanded by a hydraulic cylinder (13).

Description

  • The invention relates to a compact multiuse mobile work tool.
  • The prior art teaches compact multiuse mobile work tools exhibiting masses such as to enable them to be used inside buildings for all principal operations for which vehicles designed for use on building sites are designated. Thus available on the market are mini-loader blades, mini-excavators and mini-elevators, but as yet no compact work tools considered to be multi-use in the sense that they are able, when apposite work tools are applied, to perform the tasks usually associated with building sites.
  • According to the prior art, indeed, when excavation work or shaft-sinking (for example, with pneumatic drills) has to be combined with loading work, at least two machines must be used. The present invention, as it is characterised in the claims that follow, obviates the drawbacks in the prior art by providing a compact work machine exhibiting authentic multi-function characteristics, thanks to its general structure and to the presence of a single articulated manoeuvring arm which is so structured as to be utilizable for activating tools and equipment for all principal functions: loading, elevating, excavating, and so on.
  • Further characteristics and advantages of the present invention will better emerge from the detailed description that follows, of an embodiment of the invention, illustrated in the form of a non-limiting example in the accompanying drawings, in which:
    • figure 1 is a schematic lateral view in vertical elevation;
    • figure 2 is the same view as figure 1 with the tool in a different operative and functional configuration;
    • figure 3 is a schematic plan view from above of figure 1.
  • With reference to the figures, 1 denotes a frame provided with two pairs of wheels 2. For different needs, a pair of tracks might be fitted instead of the wheels.
  • A rotatable platform 3 is pivoted about a vertical axis perpendicular to a plane identified by the axes of the wheels 2. On the rotatable platform 3 are: a motor 4, located posteriorly thereon; a driver's cockpit 5 for the operator, and a manoeuvring arm 6, situated in a decentralized position by the side of the cockpit 5.
  • The manoeuvring arm 6 is constituted by two principal segments 7 and 8, which are hinged one to the other at respective ends thereof. The first segment 7 exhibits a first end hinged by a pivot 17 at a front end of the rotatable platform 3. The second segment 8 is instead provided, at a free end thereof, with a rapid universal attachment 9 for tools or equipment, said rapid universal attachment 9 being is equipped with hydraulically-activated organs 10 for manoeuvring tools and equipment in the articulation plane of the arm 6. The first segment 7 is brought to rotate in two directions about the pivot 17 by a mechanical lever system comprising:
    a lever 11 hinged at a first end thereof to the rotatable platform 3 by means of a pivot 15;
    a connecting member 12, hinged to a second end of the lever 11 and to the first segment 7, at a point situated at a predetermined distance from the axis of the pivot 17;
    a hydraulic cylinder 13 exhibiting a bottom end which is hinged to the rotatable platform 3 and a stem end hinged, by means of a pivot 14, to an intermediate point of the lever 11.
  • The lever system, constituted by the lever 11 and the connecting member 12, constitutes together with the first segment 7 and the rotatable platform 3 a four-bar hinge wherein the fixed member is constituted by the rotatable platform 3 itself. The entire lever system is proportioned such that the lever 11 exhibits a shorter length than the connecting member 12, which connecting member 12 pivot axis to the first segment 7, in the position represented in figure 1, is located at a predetermined distance from the axis of the pivot 17. Said pivot 17 is located in an advanced position and situated inferiorly to (and is parallel to) the axis of the pivot 14 by means of which the lever is hinged to the rotatable platform 3.
  • The end of the first segment 7 hinged to an end of the second segment 8, exhibits a special arced conformation with the aim of permitting an adequate connection with said end of the second segment 8.
  • A complete series of tools and equipment can be coupled to the rapid universal attachment 9. In particular, as shown in figure 1, a loading scuttle 20 can be applied to the rapid universal attachment 9. The machine, fitted with the loading scuttle 20, can function as a self-propelled loader of the type known as skid steer loader. The loading scuttle 20 manoeuvrability is achieved through the arm 6. Horizontal movements are obtained by movements of the entire vehicle on the wheels 2 (or tracks), combined with rotation movements of the rotatable platform 3.
  • By applying a bucket 21, as shown in figure 2, the machine becomes a mini-excavator; also in this case the manoeuvring of the bucket 21 is realized by means of the manoeuvring arm 6. The ability of the rotatable platform 3 to rotate about a vertical axis with respect to the frame 1 allows operation in every direction, at 360 degrees, without having recourse to movements of the chuck 2. Thanks to its conformation and to the conformation of the mechanism producing the rotation of the first segment first segment 7, the manoeuvring arm 6 has a high manoeuvrability in a vertical plane. The rotation of the whole rotatable platform 3 about a vertical axis means that the arm 6 can operate in any direction. These abilities, together with the possibility of applying very different tools or equipment to the rapid universal attachment 9, render the machine truly multi-functional.

Claims (3)

  1. A compact multiuse mobile work tool, characterized in that it comprises:
    a frame (1) provided with wheels (2);
    a rotatable platform (3), hinged on said frame (1) about an axis which is practically perpendicular to a rest plane of said wheels (2);
    a motor (4) housed posteriorly on said rotatable platform (3);
    a cockpit (5) for an operator, located on said rotatable platform (3);
    an articulated manoeuvring arm (6), predisposed on the rotatable platform (3) in a decentralized position by a side of the cockpit (5); said manoeuvring arm (6) being constituted by a first segment (7) and a second segment (8), which are hinged one to another; said first segment (7) also being hinged, at a first end thereof, at a front end of the rotatable platform (3); said second segment (8) being provided at a free end thereof with a rapid universal attachment (9) for tools and equipment which rapid universal attachment (9) is provided with hydraulically-activated organs (10) for manoeuvring said tools and equipment in an articulation plane of the manoeuvring arm (6);
    wherein the first segment (7) is activated to rotate about a pivot (17), by means of which pivot (17) said first segment (7) is hinged to the rotatable platform (3) by a mechanical lever system, hydraulically commanded, and comprising:
    a lever (11), hinged at a first end thereof to the rotatable platform (3);
    a connecting member (12), hinged at a first end to a second end of the lever (11) and at a second end to the first segment (7), at a predetermined distance from a hinge axis of the first segment (7) to the rotatable platform (3);
    a hydraulic cylinder (13) exhibiting a bottom end which is hinged to the rotatable platform (3) and a stem end which is hinged at an intermediate point of the lever (11).
  2. A work tool as in claim 1, characterized in that the pivot (17), by which the first segment (7) is hinged to the rotatable platform (3), has a horizontal axis and is parallel to and situated inferiorly to a pivot (15) by which the lever (11) is hinged to the rotatable platform (3).
  3. A work tool as in claim 2, characterized in that said lever (11) is shorter in length than said connecting member (12).
EP95830070A 1994-03-04 1995-03-03 A compact multi-use mobile work tool Expired - Lifetime EP0670391B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO940031 1994-03-04
IT1994MO000031A IT1268911B1 (en) 1994-03-04 1994-03-04 COMPACT MULTI-PURPOSE OPERATING MACHINE.

Publications (2)

Publication Number Publication Date
EP0670391A1 true EP0670391A1 (en) 1995-09-06
EP0670391B1 EP0670391B1 (en) 2000-02-09

Family

ID=11385588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830070A Expired - Lifetime EP0670391B1 (en) 1994-03-04 1995-03-03 A compact multi-use mobile work tool

Country Status (4)

Country Link
EP (1) EP0670391B1 (en)
DE (1) DE69514945T2 (en)
ES (1) ES2143027T3 (en)
IT (1) IT1268911B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7383906B2 (en) 2002-08-29 2008-06-10 Jlg Industries, Inc. Rotatable and telescopic work machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2365008A1 (en) * 1976-09-17 1978-04-14 Pingon Manubat Sa Two piece excavator boom - has adjustable piece at elbow joint enabling position jib fulcrum and boom length to be varied
GB2025360A (en) * 1978-07-10 1980-01-23 Brefer Spa Excavator with articulated arms
EP0568758A1 (en) * 1992-05-04 1993-11-10 MANITOU COSTRUZIONI INDUSTRIALI S.r.l. A multi-use mobile elevator excavator
FR2694316A1 (en) * 1992-07-31 1994-02-04 Pel Job Groupe Loader-excavator-elevator vehicle implement - has arm at free end of shaft and tool mounted on arm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2365008A1 (en) * 1976-09-17 1978-04-14 Pingon Manubat Sa Two piece excavator boom - has adjustable piece at elbow joint enabling position jib fulcrum and boom length to be varied
GB2025360A (en) * 1978-07-10 1980-01-23 Brefer Spa Excavator with articulated arms
EP0568758A1 (en) * 1992-05-04 1993-11-10 MANITOU COSTRUZIONI INDUSTRIALI S.r.l. A multi-use mobile elevator excavator
FR2694316A1 (en) * 1992-07-31 1994-02-04 Pel Job Groupe Loader-excavator-elevator vehicle implement - has arm at free end of shaft and tool mounted on arm

Also Published As

Publication number Publication date
EP0670391B1 (en) 2000-02-09
ITMO940031A0 (en) 1994-03-04
ITMO940031A1 (en) 1995-09-04
DE69514945T2 (en) 2000-08-17
IT1268911B1 (en) 1997-03-13
ES2143027T3 (en) 2000-05-01
DE69514945D1 (en) 2000-03-16

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