EP2221271B1 - Arbeitsplattform - Google Patents

Arbeitsplattform Download PDF

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Publication number
EP2221271B1
EP2221271B1 EP10446501A EP10446501A EP2221271B1 EP 2221271 B1 EP2221271 B1 EP 2221271B1 EP 10446501 A EP10446501 A EP 10446501A EP 10446501 A EP10446501 A EP 10446501A EP 2221271 B1 EP2221271 B1 EP 2221271B1
Authority
EP
European Patent Office
Prior art keywords
loader
work platform
arrangement
platform
control
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.)
Not-in-force
Application number
EP10446501A
Other languages
English (en)
French (fr)
Other versions
EP2221271A2 (de
EP2221271A3 (de
Inventor
Gunnar Wallin
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.)
JAMA MINING MACHINES AB
Original Assignee
Jama Mining Machines 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 Jama Mining Machines AB filed Critical Jama Mining Machines AB
Publication of EP2221271A2 publication Critical patent/EP2221271A2/de
Publication of EP2221271A3 publication Critical patent/EP2221271A3/de
Application granted granted Critical
Publication of EP2221271B1 publication Critical patent/EP2221271B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • 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
    • E02F9/24—Safety devices, e.g. for preventing overload
    • 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
    • E02F9/26—Indicating devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/02—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means
    • E04G1/04—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section

Definitions

  • the present invention concerns a work platform and a safety system for a work platform, intended to be supported by a working vehicle according to the preamble of claim 1.
  • One vehicle thus comprises a wheeled motor-driven platform that is manoeuvred into the location at which the work is to be carried out.
  • the wheeled platform must be driven away from the location to a location such that the next vehicle, for example a loader, can be manoeuvred to the location to carry out its work. Since mining involves narrow passageways, it may be too narrow on occasions, and the work is delayed due to vehicles that are not being used blocking the way.
  • WO 2006/041343 describes a service platform connected to and supported by a carrier.
  • the service platform provides an improvement of the working conditions for users by allowing the roof of the service platform to be swung away.
  • a coupling assembly for detachably attaching an implement to a hydraulic arm of a heavy machinery is described in WO 02/097201 .
  • the coupling assembly has indication means for indication a locking position.
  • WO 2004/072387 describes a system having an implement attachment means for attaching an implement to a working machine.
  • the implement attachment means includes locking means and drive coupling means, such as hydraulic coupling units and/or electrical coupling units.
  • WO 2004/072387 is particularly concerned with the positioning of the implement attachment means relative to the implement with regard to quick coupling and uncoupling operations.
  • the purpose of the invention is thus to achieve a work platform that can be used together with the loading vehicles that are available on site in the mine passageways, such as loaders.
  • Certain requirements must be met in order for it to be possible to carry out the lifting of personnel on a platform mounted on a loader. These requirements comprise, among others, that it is possible to displace the machine only at very limited speeds, it must be possible to operate the loader both from the platform and from the driver's cabin of the loader, and the emergency lowering arrangements must be suitable for work from platforms.
  • One advantage of the invention is thus that one and the same machine can be used for different operations, in that the work platform according to the invention can be used together with a conventional loader. This gives a solution that not only saves space but also is more economical than the current solutions.
  • the platform 1 shown in Figure 1 comprises a conventional horizontal platform design with a given length and width.
  • the platform 1 is limited outwards by protective rails that form the side walls 2 of the platform.
  • At least one of the walls 2 is arranged with an opening 3 with a frame that can be closed by a door 4.
  • the door 4 demonstrates spring-loaded hinges 5 that are spring-loaded in the direction in which the door closes.
  • the door 4, furthermore, is arranged with a lock arrangement 6 that automatically locks the door 4 in the opening 3 when the door is placed by spring force into its closed position.
  • a roof 7 is arranged in association with one of the walls 2 of the platform 1, which roof at least partially covers the principal plane of the platform 1.
  • the roof 7 can be manoeuvred in the direction of its height and in its extension with the aid of hydraulic or electric motors 8.
  • the platform 1 is arranged with a control panel 9 for the control of a system of either electrical or hydraulic, or both, control valves (not shown in the drawings).
  • the control valves are intended to regulate the height and tilt of the platform 1, the extension of the roof 7 and the degree of bend of the loader 10 to which it is intended that the platform 1 be fastened.
  • a fixture arrangement 11, a tool fixture, is arranged at one of the walls 2 of the platform 1, for the fastening of the platform 1 to a working vehicle, for example a loader 10, in a manner that allows it to be removed.
  • the fixture arrangement 11 in this embodiment is of the type that demonstrates a vehicular part 12 and a tool part 13.
  • the vehicular part 12 comprises an upper shaft 14 that is essentially horizontal with respect to the longitudinal direction of the loader and a lower shaft 15 arranged at the lifting arms 16, which can be raised and lowered, of the loader 10.
  • the shafts 14, 15 are attached at brackets 17 that can be tilted: this means that they can be set at an angle in a direction away from or towards the tool that is to be mounted.
  • Protruding flanges 18 are arranged at the lower 15 of the two shafts, with locking parts 19 that can be displaced and that can be introduced into corresponding locking parts 20 on the tool. It is an advantage that the locking parts 19 that can be displaced comprise locking cylinders that can be controlled hydraulically.
  • the tool part 13 of the fixture arrangement 11 comprises a pair of hook-shaped parts 21 arranged at a certain separation from each other and intended to interact with the upper shaft 14 of the horizontal shafts of the vehicular part 12 when the tool is to be mounted. Furthermore, a pair of attachment lugs 22 with openings that constitute the locking parts 20 are arranged, which lugs interact with the locking parts 19 that can be displaced when mounting the tool.
  • a lock arrangement 24 is arranged between the hook-shaped parts 21 and the attachment lugs 22 in the form of a locking peg that can be displaced in a sliding motion.
  • the lock arrangement 24 can be displaced between an open condition (see Fig. 4 ) at a distance from the hook-shaped parts 21 and a closed condition (see Fig. 5 ) when it is associated with the hook-shaped parts 21.
  • the term "closed condition” denotes the condition in which the opening 25 of the hook-shaped parts 21 is too small to allow the shaft 14 that is to interact with the hook-shaped parts 21 to pass the opening 25.
  • the lock arrangement 24 can be displaced along a groove 26 that is formed in the direction of displacement.
  • a shaft peg 27 is attached to the tool part 13.
  • the lock arrangement 24 is located with the shaft peg 27 in the groove 26 and it functions as a control for the displacement of the stop peg 24. Furthermore, a second shaft peg 28, which can be removed, is also arranged. This second shaft peg 28 is located such that the lock arrangement 24 when it is in the condition B that closes the opening 25 of the hook can be locked fixed into this condition.
  • the vehicular part 12 of the tool fixture is arranged with indicating means 29 to indicate the condition of the lock arrangement 24.
  • This means 29 is located such that it indicates the open condition A of the lock arrangement, and its closed condition B that closes the opening 25 of the hook.
  • the indicating means 29 is electrically connected to a control unit (not shown in the drawings) that determines whether the lock arrangement 24 is correctly positioned or not. A signal must be transmitted from the indicating means 29 to the control unit in order for the control panel 9 to function.
  • the indicating means 29 comprises inductive sensors in this embodiment. It should, however, be realised that it is possible to use other types of sensor, for example contact units, magnetic contacts or other contact-based or contact-free sensors.
  • the loader 10 has an extra control arrangement 30 arranged at its control panel.
  • This extra control arrangement is in the form of a lever or panel that can be used when the platform 1 is coupled to the loader 10 and the platform 1 is raised into a position that is higher than its transport position. The position above the transport position is determined by a limit sensor 23 arranged at the arms of the loader.
  • the extra control arrangement 30 is connected to the control panel 9 of the platform 1 through a contact arrangement 31, for example in the form of a multipole contact. That part of the contact that is mounted on the loader demonstrates a protective cover 32, which functions also as main power switch for the loader. It is not possible to drive the loader if the platform 1 has been uncoupled and the cover 32 is not closed.
  • loader (10) is used to denote all forms of working vehicles that carry out work with tools, for example wheel loaders, belt loaders and similar vehicles.
  • the loader is for example controlled from its waist.
  • the function of the platform is as follows: the loader 10 is driven to approach the platform 1 with the tool fixture 12 of the loader 10 directed towards the tool fixture 13 of the platform.
  • the tool fixture 12 is manoeuvred such that its upper shaft 14 is placed into the opening 25 of the hook-shaped parts 21 of the part 13 of the tool fixture that is located on the platform 1.
  • the arms 16 of the loader 10 are lifted slightly at the same time as the tool fixture 12 is tilted backwards.
  • the manoeuvre leads to the lower parts of the tool fixture 12, 13 fitting into each other, after which the hydraulic locking parts 19 of the vehicular part 12 are pressed into the locking parts 20 of the fixing lugs 22 of the tool part 13.
  • the platform 1 is in this way locked to the loader 10.
  • the operator subsequently removes the shaft plug 28 from one side of the tool fixture.
  • the lock arrangements 24 are displaced in the direction towards the upper shaft 14 of the tool fixture, to a position at which the shaft plug 28 can be introduced through the groove 26 of the lock arrangement into the tool fixture and locked there, by, for example, being rotated. This operation is then repeated on the second side of the tool fixture.
  • both stop plugs have been locked into their positions in association with the upper shaft of the tool fixture, it is checked that the inductive sensors 29 give a signal that shows that the lock arrangement 24 is correctly positioned relative to the tool fixture 13 and the platform 1.
  • the hydraulic system of the loader 10 is switched off by the closure valves of the lifting and tilting cylinders (not shown in the drawings) being closed, after which a proportionality valve (also this not shown in the drawings) is connected to the extra control arrangement 30 in the driver's cabin of the loader by electrical and hydraulic connections.
  • the next operation is the connection of the control circuits, in order to perform the exchange of function between the platform 1 and the loader 10.
  • the contact arrangement 31 in the form of a hydraulic and electrical contact with several connections, known as a "multifunction connector", is arranged with its female part 33a and its male part 33b mounted on the platform 1 and the loader 10, respectively. Furthermore, a male part 34a and a female part 34b of an electrical multipole contact are arranged on the platform 1 and the loader 10, respectively.
  • the part that is mounted on the loader 10 is arranged with a protective cover 32 that disconnects the functions of the platform 1 from the ordinary control levers of the loader 10 when the platform is dismounted from the loader.
  • the ordinary control levers of the loader are disconnected, whereby the loader can be manoeuvred by control signals from the control panel 9 of the platform or from the extra control arrangement 30 inside the driver's cabin. If the platform has been raised to a predetermined height above what is known as the "transport condition", for example approximately 1 metre above the ground, the loader can be driven only in a low gear with limited speed.
  • the loader When the platform has been dismounted from the loader, the loader can be used for conventional work and it can carry out excavation, loading, unloading and similar operations by mounting a bucket, palette forks or a similar tool to the tool fixture. This type of work takes place in a known manner through the hydraulic cylinders for lifting, lowering and tilting being operated from the ordinary controls of the vehicle.
  • the person who is located at the driver's seat of the vehicle can drive the vehicle only at a limited speed, if the platform has been raised to the transport condition or lower than this, with the aid of the extra control arrangement at the driver's seat.
  • the ordinary controls of the vehicle are disconnected in this condition.
  • the person or persons who are on the platform can manoeuvre the height and tilt of the platform from the platform, together with the height and extension of the roof and the degree of bend of the vehicle.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Transportation (AREA)
  • Operation Control Of Excavators (AREA)
  • Shovels (AREA)

Claims (10)

  1. Arbeitsplattform (1), welche vorgesehen ist, von einer Ladevorrichtung (10) unterstützt zu werden, umfassend nach außen begrenzende Seitenteile (2), ein Dach (7) und eine Fixierungsvorrichtung (11) zur Befestigung in einer solchen Weise, dass die Arbeitsplattform (1) von einem an der Ladevorrichtung (10) angeordneten Fahrzeugteil (12) freigegeben werden kann, dadurch gekennzeichnet, dass die Fixierungsvorrichtung (11) eine Verriegelungsanordnung (24) aufweiset, welche zwischen einem Zustand, in welchem die Arbeitsplattform (1) entfernt werden kann, und einem verriegelten Zustand versetzbar ist, ein Mittel (29) zum Anzeigen des jeweiligen Zustandes, ein Steuerungsteil (9) zum Manövrieren der Ladevorrichtung (10) von der Arbeitsplattform (1) und eine Kontaktanordnung (31) in Form eines elektrischen oder hydraulischen Kontaktes, oder beides, welche die gewöhnlichen hydraulischen Systeme der Ladevorrichtung (10) begrenzt und die Steuersignale an die gewöhnlichen hydraulischen Systeme der Ladevorrichtung (10) durch Steuersignale vom Steuerungssystem der Arbeitsplattform (1) ersetzt, wenn die Arbeitsplattform (1) auf der Ladevorrichtung (10) verriegelt ist.
  2. Arbeitsplattform nach Anspruch 1, wobei das Mittel (29) induktive Sensoren aufweist.
  3. Arbeitsplattform nach den Ansprüchen 1 oder 2, wobei das Mittel (29) das Steuerungsteil (9) aktiviert, wenn ein verriegelter Zustand der Verriegelungsanordnung (24) angezeigt wird.
  4. Arbeitsplattform nach Anspruch 1, wobei die Ladevorrichtung (10) eine Steuerungsvorrichtung (30) zum begrenzten Manövrieren der Ladevorrichtung (10) aufweist, welche Steuerungsvorrichtung bein Montieren der Arbeitspfattform (1) auf der Ladevorrichtung (10) mit dem Steuerungsteil (9) verbunden ist.
  5. Arbeitsplattform nach einem der vorgehenden Anspruche, wobei das Steuerungsteil (9) ein Steuerungspanel zur Erzeugung von Steuersignalen zum Manövrieren der Ladevorrichtung (10) von der Arbeitsplattform (1) aufweist.
  6. Arbeitsplattform nach seinem der vorgehenden Ansprüche, wobei das Steuerungsteil (9) den Biegungsgrad einer von der Mittelhöhe gesteuerten Ladevorrichtung (10) steuert.
  7. Arbeitsplattform nach einem der vorgehenden Anspruche, wobei das Steuerungsteil (9) mit der Kontaktanordnung (31) verbunden ist und kontrolliert, dass das Anheben und Kippen der Plattform (1) durch ein an der Ladevorrichtung (10) montiertes, proportional gesteuertes Wegeventil erfolgt, welches Ventil unter Verwendung der Kontaktanordnung (31) angeschlossen ist.
  8. Arbeitsplattform nach einem der vorgehenden Anspruche, wobei mindestens eines der Seitenteile (2) eine mit einer Tür (4) ausgestattete Öffnung (3) aufweist.
  9. Arbeitsplattform nach Anspruch 8, wobei die Öffnung (3) mit einer Verriegelungsanordnung (6) ausgestattet ist, welche die Tür (4) verriegelt, wenn diese in seinen geschlossenen Zustand gebracht wird.
  10. Arbeitsplattform nach einem der vorgehenden Ansprüche, wobei das Dach (7) mittels eines hydraulischen oder elektrischen Motores (8) in der Höhe und in der Längsrichtung manövrierbar ist.
EP10446501A 2009-02-18 2010-02-15 Arbeitsplattform Not-in-force EP2221271B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0900205A SE534609C2 (sv) 2009-02-18 2009-02-18 Arbetsplattform

Publications (3)

Publication Number Publication Date
EP2221271A2 EP2221271A2 (de) 2010-08-25
EP2221271A3 EP2221271A3 (de) 2011-03-02
EP2221271B1 true EP2221271B1 (de) 2012-10-24

Family

ID=42198932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10446501A Not-in-force EP2221271B1 (de) 2009-02-18 2010-02-15 Arbeitsplattform

Country Status (3)

Country Link
EP (1) EP2221271B1 (de)
DK (1) DK2221271T3 (de)
SE (1) SE534609C2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2988659B1 (fr) * 2012-03-28 2014-12-26 Manitou Bf Dispositif de detection d'outil ou d'accessoire
GB2552025B (en) 2016-07-08 2020-08-12 Sovex Ltd Boom conveyor
DE102018108196A1 (de) * 2018-04-06 2019-10-10 Thomas Jansen Transportkarre für einen Bagger und Baggersystem
WO2023017482A1 (en) * 2021-08-13 2023-02-16 3M Innovative Properties Company Interlocking system for an access-controlled area
CN113982622A (zh) * 2021-10-26 2022-01-28 中国十九冶集团有限公司 隧道施工机械移动操作平台安装结构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359137A (en) * 1980-05-30 1982-11-16 Jlg Industries Inc. Safeload indicator for aerial lift platform apparatus
AUPR533701A0 (en) * 2001-05-29 2001-06-21 Ephemere Pty Ltd A coupling assembly
DE20209713U1 (de) * 2002-06-22 2002-11-21 Hermann Paus Maschinenfabrik GmbH, 48488 Emsbüren Radlader
SE524941C2 (sv) * 2003-02-17 2004-10-26 Oilquick Ab System innefattande redskapsfäste och arbetsredskap
JP4283033B2 (ja) * 2003-05-07 2009-06-24 株式会社熊谷組 マンケージ及び地盤掘削用重機
SE526744C2 (sv) * 2004-09-07 2005-11-01 Atlas Copco Rock Drills Ab Bergborrigg
GB0507972D0 (en) * 2005-04-20 2005-05-25 Caterpillar Inc Load sensing system for an aerial work apparatus

Also Published As

Publication number Publication date
SE534609C2 (sv) 2011-10-25
DK2221271T3 (da) 2013-01-14
EP2221271A2 (de) 2010-08-25
EP2221271A3 (de) 2011-03-02
SE0900205A1 (sv) 2010-08-19

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