EP1602621A2 - Chariot de manutention avec un dispositif de sécurité pour un mât de levage. - Google Patents

Chariot de manutention avec un dispositif de sécurité pour un mât de levage. Download PDF

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Publication number
EP1602621A2
EP1602621A2 EP20050012035 EP05012035A EP1602621A2 EP 1602621 A2 EP1602621 A2 EP 1602621A2 EP 20050012035 EP20050012035 EP 20050012035 EP 05012035 A EP05012035 A EP 05012035A EP 1602621 A2 EP1602621 A2 EP 1602621A2
Authority
EP
European Patent Office
Prior art keywords
mast
driver
truck
sensor device
operator
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.)
Withdrawn
Application number
EP20050012035
Other languages
German (de)
English (en)
Inventor
Manfred Baumann
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.)
STILL GmbH
Original Assignee
STILL 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 STILL GmbH filed Critical STILL GmbH
Publication of EP1602621A2 publication Critical patent/EP1602621A2/fr
Withdrawn legal-status Critical Current

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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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks

Definitions

  • the invention relates to an industrial truck with a mast, the at least one having movable part, and associated with a truck Driver's seat for an operator of the truck.
  • the masts of industrial trucks usually have a stationary mast and at least one movably guided on the stand mast in the vertical direction Extension mast on.
  • On the extension mast in turn is a lifting in vertical Directed guided movably, to which a load-receiving means is attached. While a vertical movement of a Ausfahrmasts and / or the lifting carriage is It is essential to avoid the body parts of the truck operator located in the area of the mast, as these are due to the moving parts of the Mast can be significantly injured.
  • the driver's seat can be a driver's seat or a driver's seat Driver platform have.
  • drawbar guided lift trucks which are in Pedestrian use, the driver's seat is in front of the pallet truck, wherein the lift truck can be controlled by means of a steering arm.
  • the mast by means of protective disks Safety glass or plastic or by means of fine-meshed protective grid of the Separate driver's seat.
  • these known devices have the disadvantage that they severely limit the operator's vision, especially when used a protective grille or if a protective screen gets dirty.
  • Protective grid collide often on a low acceptance, since this gives the operator the impression to mediate being locked up.
  • a windscreen wiper and a windscreen washer system can be installed.
  • the present invention is therefore based on the object, a truck of to provide the type mentioned above, in which the risk of injury the operator is reliably prevented by the mast and yet the view of Operator on the mast and through the mast not through is impaired.
  • a non-contact sensor device is arranged, which is so in operative connection with the mast, that a Movement of the movable part of the mast is prevented when a Object and / or a body part of the operator in the area of the mast located.
  • This is located between the driver's seat and the mast no mechanical separation, allowing the operator's view to the mast and is not affected by the mast.
  • the danger of a violation of Operator by the moving parts of the mast is thereby excluded that movement of these parts is automatically stopped as soon as a body part of the operator gets into dangerous proximity of the mast.
  • To this To recognize is in the area between the driver's seat and mast one Sensor device provided with the presence of objects and is detected in particular by body parts.
  • the sensor device is with a electrical control device for the functions of the mast connected in the If necessary, then prevents any movement of a movable part of the mast.
  • the non-contact working Sensor device at least one optical sensor.
  • Sensor devices are also referred to as light sensors.
  • the sensor becomes detected when a light beam directed to the light source is interrupted.
  • the non-contact sensor device has at least one Light source on.
  • a light beam emanating from the light source is direct or via Reflectors directed to the optical sensor.
  • the light source can be light in the process visible frequency range or in the invisible frequency range, for example Infrared light, generate.
  • the sensor device generates a light curtain, which is located above a behind the mast, essentially vertical Plane extends.
  • the light curtain for example, by several parallel aligned light sources are generated, each light source its own associated with optical sensor. Likewise it is possible to use a single light source too use their light beam with multiple mirrors redirected to just one directed optical sensor.
  • the light curtain consists of one in both cases Variety of parallel aligned light beams, whose distance is measured, that a penetration between two light beams is not possible.
  • the Light rays can move within the plane of the light curtain in vertical, horizontal or obliquely oriented.
  • the sensor device For industrial trucks, which have a driver's roof, is the sensor device conveniently attached to struts of the driver's shelter.
  • the essentially vertical struts are located in front of the driver's seat and connect the actual protective roof with the frame of the truck.
  • the optical Sensors, light sources and possibly existing reflectors and mirrors are attached to the struts.
  • the light curtain extends to a surface between the two struts.
  • the sensor device attached to the mast is.
  • This arrangement is particularly suitable for industrial trucks, the no Driver protection roof, or in which the struts do not attach the Sensor device are suitable.
  • the sensor device is located on the the driver's seat facing side of the mast and is attached such that between the light curtain and the movable parts of the mast sufficiently large distance exists.
  • the figure shows an inventive, designed as a forklift truck.
  • the truck comprises a vehicle frame 1, two front wheels 2, a Rear wheel 3, a rear weight 4 and a driver's roof 5.
  • Below the Driver's protection roof 5 is the driver's seat 6 of the truck, the one Driver's seat 7 for the operator, a steering wheel 8 and a plurality of operating lever 9 has.
  • the driver's roof 5 is by means of struts 5a, which as part of the Driver's protection roof 5 apply, with the vehicle frame 1 and the rear weight. 4 connected.
  • a Mast 10 which in this embodiment, a non-liftable mast 11, a relative to the stationary mast 11 vertically movable extension mast 12 and a on the extension mast 12 vertically movable lifting carriage 13 has.
  • the entire mast 10 relative to the vehicle frame 1 by a horizontal Axis inclinable.
  • a sensor device 14 is arranged, which builds a light curtain between the front struts 5a.
  • the light curtain consists of essentially horizontal beams of light and is present in the Illustration with dotted lines shown symbolically.
  • the sensor device 14 detects when one of the light beams, for example, from the hand of the operator, is interrupted and then generates a corresponding output signal.
  • This Output signal causes in an electrical control of the lifting device that each Movement of components of the mast 10, in particular a tilting movement of the entire mast 10, a vertical movement of the Ausfahrmasts 12 and a Vertical movement of the lifting carriage 13 is stopped immediately. A threat to the Operator by the mast 10 can thereby be safely prevented since a contact of body parts with moving parts of the mast 10 is excluded is.
  • the sensor device 14 is connected to the electrical control device in this way, that in case of failure of the sensor device 14 or a fraction of the Connection line also a safe condition of the truck is produced, by immediately stopping any movement of components of the mast 10.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP20050012035 2004-06-03 2005-06-03 Chariot de manutention avec un dispositif de sécurité pour un mât de levage. Withdrawn EP1602621A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410026983 DE102004026983A1 (de) 2004-06-03 2004-06-03 Flurförderzeug mit einer Sicherheitseinrichtung für ein Hubgerüst
DE102004026983 2004-06-03

Publications (1)

Publication Number Publication Date
EP1602621A2 true EP1602621A2 (fr) 2005-12-07

Family

ID=34937226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050012035 Withdrawn EP1602621A2 (fr) 2004-06-03 2005-06-03 Chariot de manutention avec un dispositif de sécurité pour un mât de levage.

Country Status (2)

Country Link
EP (1) EP1602621A2 (fr)
DE (1) DE102004026983A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3549901A1 (fr) * 2018-03-13 2019-10-09 STILL GmbH Chariot élévateur à mât rétractable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3549901A1 (fr) * 2018-03-13 2019-10-09 STILL GmbH Chariot élévateur à mât rétractable

Also Published As

Publication number Publication date
DE102004026983A1 (de) 2005-12-29

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