EP0499097A2 - Dispositif de sécurité anti-collision pour chariots-élevateurs à fourches et analogues - Google Patents

Dispositif de sécurité anti-collision pour chariots-élevateurs à fourches et analogues Download PDF

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Publication number
EP0499097A2
EP0499097A2 EP92101518A EP92101518A EP0499097A2 EP 0499097 A2 EP0499097 A2 EP 0499097A2 EP 92101518 A EP92101518 A EP 92101518A EP 92101518 A EP92101518 A EP 92101518A EP 0499097 A2 EP0499097 A2 EP 0499097A2
Authority
EP
European Patent Office
Prior art keywords
safety device
support
vehicle
accordance
fitted
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
EP92101518A
Other languages
German (de)
English (en)
Other versions
EP0499097A3 (en
EP0499097B1 (fr
Inventor
Roberto Muselli
Armando Neri
Gianluigi Orsi
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.)
GD SpA
Jobs SpA
Original Assignee
GD SpA
Jobs SpA
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Filing date
Publication date
Application filed by GD SpA, Jobs SpA filed Critical GD SpA
Publication of EP0499097A2 publication Critical patent/EP0499097A2/fr
Publication of EP0499097A3 publication Critical patent/EP0499097A3/en
Application granted granted Critical
Publication of EP0499097B1 publication Critical patent/EP0499097B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

  • This invention relates to an anti-collision safety device designed in particular for fork-lift trucks and similar vehicles. More specifically, the invention relates to a device consisting of a bar or bumper, fitted to a telescopic support able to traverse and rotate slightly in relation to the truck, which activates suitable alarm and/or stop devices when it collides with an obstacle.
  • the invention is characterised by the special configuration of the parts, which is designed to improve and increase the practicality of the safety devices currently fitted to elevators, automatic-drive trucks, etc.
  • Safety devices designed to avoid or limit the damage deriving from collisions between the vehicle and an obstacle are already known, being generally fitted to trucks, elevators and vehicles designed for use in factories, construction sites and other workplaces. These devices usually consist of bumpers, feelers or the like fitted to the truck which can counteract the force exerted by elastic elements to perform limited movements and which activate an alarm device or stop the movement of the vehicle in the event of a collision.
  • a useful feature would be safety devices designed to detect obstacles at the sides of the truck when it is turning corners.
  • this invention proposes an anti-collision safety device for vehicles, in particular fork-lift trucks, which comprises a telescopic support to the front of which is fitted a bumper, preferably also telescopic, which can be extended further forward than the load on the forks and which is connected to the vehicle control equipment.
  • This telescopic support can slide and rotate slightly in relation to a pair of guides built into the truck chassis; during these movements it activates a set of microswitches connected to equipment designed to stop the vehicle.
  • the safety device assembly in accordance with the invention is indicated by the number 3.
  • these devices basically consist of a pair of telescopic supports 4 to the end of which is fitted a bumper 5 equipped with a pair of lateral telescopic arms 6, each of which has the end 7 facing backwards.
  • the bumper width and its distance from the truck can therefore be suitably adjusted so that load 8 resting on the forks is surrounded at the front, and the bumper is kept at the most appropriate distance from the load.
  • Telescopic supports 4 comprise a pair of hydraulic pistons 9, rigidly connected one to another by crosspieces 10, which run inside a pair of guides 11 consisting of two C-sections fixed to the vehicle chassis.
  • Each of guides 11 (fig. 3) is fitted with a pair of horizontal-axis rollers 12 and a vertical-axis roller 13, which project slightly from the contour of the guide.
  • Cylinders 9 can perform limited movements along guides 11 and, resting against rollers 12 and 13 which keep them at a given distance from the said guides, can also rotate slightly around the point of contact with the rollers.
  • the said structure of the telescopic support activates a pair of devices like the one illustrated in fig. 4 and indicated as a whole by the number 14, which are able to activate the vehicle control devices in the event that the bumper collides with an obstacle along the route.
  • control devices comprise a shaft 15, built into one of crosspieces 10, for example, along which a pair of cam elements 16, kept apart by a helical spring 17 or the like, can run against a pair of travel limit elements 18 built into the vehicle chassis.
  • a pair of adjustable retainers 19 limits the movements of the cams along shaft 15.
  • Two microswitches 20 connected to the vehicle control panel or to devices able to stop the vehicle are placed between cam elements 16 and at a distance from them.
  • telescopic support 4 is regulated to bring bumper 5 to the desired distance from the load on the forks; the bumper width is also adjusted in relation to the size of both the load and the vehicle.
  • the telescopic support assembly retracts or rotates slightly in relation to guides 11 to which it is fitted, moving with it shaft 15 which causes one of cams 16 to engage the corresponding microswitch 20, thereby stopping the movement of the vehicle or signalling the presence of the obstacle to the driver.
  • Microswitches 20 will not be placed directly in contact with cams 16 but at a distance from them to prevent the safety devices from being activated, for example, by vibrations transmitted to the structure while the vehicle is moving as a result of uneven flooring and the like.
  • the cam device shown in fig. 4 can also be configured differently, for example as illustrated in fig. 5, where a cam element 21, kept mid-way between two fixed supports 23 by a pair of springs 22, can run along shaft 15.
  • the cam presents a flat section of a certain length to allow the telescopic support a minimum of free travel without the microswitch's being engaged, to prevent small movements caused by vibrations from activating the device.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
EP19920101518 1991-02-12 1992-01-30 Dispositif de sécurité anti-collision pour chariots-élevateurs à fourches et analogues Expired - Lifetime EP0499097B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPC910003U 1991-02-12
IT91PC000003U IT225709Y1 (it) 1991-02-12 1991-02-12 Dispositivo di sicurezza antiurto per carrelli elevatori o simili.

Publications (3)

Publication Number Publication Date
EP0499097A2 true EP0499097A2 (fr) 1992-08-19
EP0499097A3 EP0499097A3 (en) 1993-03-10
EP0499097B1 EP0499097B1 (fr) 1996-11-06

Family

ID=11388942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920101518 Expired - Lifetime EP0499097B1 (fr) 1991-02-12 1992-01-30 Dispositif de sécurité anti-collision pour chariots-élevateurs à fourches et analogues

Country Status (5)

Country Link
EP (1) EP0499097B1 (fr)
JP (1) JPH05147482A (fr)
DE (1) DE69214971T2 (fr)
ES (1) ES2093119T3 (fr)
IT (1) IT225709Y1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022939A1 (fr) * 1995-01-27 1996-08-01 Andersson Hakan Systeme de protection contre les collisions
CN102069768A (zh) * 2009-11-25 2011-05-25 凌建军 一种机动车安全防撞装置及带有该防撞装置的机动车底盘
CN102582550A (zh) * 2012-02-29 2012-07-18 长城汽车股份有限公司 一种溃缩防撞梁系统
CN114873509A (zh) * 2022-06-06 2022-08-09 中科微至科技股份有限公司 Agv用旋转举升装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100360347C (zh) * 2005-04-12 2008-01-09 赵铁生 可自由伸缩式、缓冲、吸能汽车防撞保险杠
CN104859440A (zh) * 2015-06-12 2015-08-26 邓莉莉 滑移式agv导航小车

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922570A (en) * 1932-04-30 1933-08-15 Shano Ray J De Automatic safety brake
US3023829A (en) * 1960-06-10 1962-03-06 Brake And Bearing Service Co I Obstruction operated brake setting mechanism for road vehicle
US3744588A (en) * 1971-12-28 1973-07-10 M Nave Vehicular brake actuating device
FR2499536A1 (fr) * 1981-02-06 1982-08-13 Constr Telephoniques Dispositif de protection pour chariot de manutention
US4397372A (en) * 1981-03-09 1983-08-09 Bell & Howell Company Pendulum suspended bumper assembly
DE3213957A1 (de) * 1982-04-16 1983-10-27 Mannesmann AG, 4000 Düsseldorf Auffahrabschaltung fuer ein fahrzeug
EP0102706A1 (fr) * 1982-08-11 1984-03-14 Eaton-Kenway,Inc. Véhicule de transport de matériaux
EP0192940A1 (fr) * 1985-03-01 1986-09-03 JD-Technologie AG Installation de protection contre les tamponnements pour véhicule de transport dans des allées
EP0309796A2 (fr) * 1987-09-29 1989-04-05 Jungheinrich Aktiengesellschaft Dispositif de sécurité pour chariots à fourche
FR2633571A1 (fr) * 1988-06-30 1990-01-05 Axter Sa Bouclier de protection a deux positions

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1922570A (en) * 1932-04-30 1933-08-15 Shano Ray J De Automatic safety brake
US3023829A (en) * 1960-06-10 1962-03-06 Brake And Bearing Service Co I Obstruction operated brake setting mechanism for road vehicle
US3744588A (en) * 1971-12-28 1973-07-10 M Nave Vehicular brake actuating device
FR2499536A1 (fr) * 1981-02-06 1982-08-13 Constr Telephoniques Dispositif de protection pour chariot de manutention
US4397372A (en) * 1981-03-09 1983-08-09 Bell & Howell Company Pendulum suspended bumper assembly
DE3213957A1 (de) * 1982-04-16 1983-10-27 Mannesmann AG, 4000 Düsseldorf Auffahrabschaltung fuer ein fahrzeug
EP0102706A1 (fr) * 1982-08-11 1984-03-14 Eaton-Kenway,Inc. Véhicule de transport de matériaux
EP0192940A1 (fr) * 1985-03-01 1986-09-03 JD-Technologie AG Installation de protection contre les tamponnements pour véhicule de transport dans des allées
EP0309796A2 (fr) * 1987-09-29 1989-04-05 Jungheinrich Aktiengesellschaft Dispositif de sécurité pour chariots à fourche
FR2633571A1 (fr) * 1988-06-30 1990-01-05 Axter Sa Bouclier de protection a deux positions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022939A1 (fr) * 1995-01-27 1996-08-01 Andersson Hakan Systeme de protection contre les collisions
CN102069768A (zh) * 2009-11-25 2011-05-25 凌建军 一种机动车安全防撞装置及带有该防撞装置的机动车底盘
CN102582550A (zh) * 2012-02-29 2012-07-18 长城汽车股份有限公司 一种溃缩防撞梁系统
CN114873509A (zh) * 2022-06-06 2022-08-09 中科微至科技股份有限公司 Agv用旋转举升装置

Also Published As

Publication number Publication date
ITPC910003U1 (it) 1992-08-12
ES2093119T3 (es) 1996-12-16
IT225709Y1 (it) 1997-01-13
DE69214971D1 (de) 1996-12-12
EP0499097A3 (en) 1993-03-10
JPH05147482A (ja) 1993-06-15
EP0499097B1 (fr) 1996-11-06
DE69214971T2 (de) 1997-03-06
ITPC910003V0 (it) 1991-02-12

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