WO2000018678A1 - Protege-conducteur pour vehicule industriel - Google Patents

Protege-conducteur pour vehicule industriel Download PDF

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Publication number
WO2000018678A1
WO2000018678A1 PCT/US1998/024172 US9824172W WO0018678A1 WO 2000018678 A1 WO2000018678 A1 WO 2000018678A1 US 9824172 W US9824172 W US 9824172W WO 0018678 A1 WO0018678 A1 WO 0018678A1
Authority
WO
WIPO (PCT)
Prior art keywords
guard
accordance
top plane
guard member
horizontal midplane
Prior art date
Application number
PCT/US1998/024172
Other languages
English (en)
Inventor
Ralph L. Barnett
Theodore Liber
Original Assignee
Triodyne Safety Systems, L.L.C.
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 Triodyne Safety Systems, L.L.C. filed Critical Triodyne Safety Systems, L.L.C.
Priority to AU14573/99A priority Critical patent/AU1457399A/en
Publication of WO2000018678A1 publication Critical patent/WO2000018678A1/fr

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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
    • 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
    • B66F9/075—Constructional features or details
    • B66F9/07545—Overhead guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/11—Overhead guards, e.g. against loads falling down
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/13—Roll-over protection
    • B60R21/131—Protective devices for drivers in case of overturning of tractors

Definitions

  • This invention relates to an overhead guard system for industrial vehicles such as forklift trucks, front end loaders, tractors, bulldozers, compactors, turf trucks, and the like. More particularly, this invention relates to an overhead guard system for industrial vehicles which provides both falling object protection and rollover protection for the vehicle operator and is suitable for use with any industrial vehicle that is typically furnished with an overhead guard as standard or optional equipment. Unlike conventional overhead guards, the overhead guard of this invention will not crush an unrestrained operator during a rollover excursion, even if the operator jumps or is propelled from the seat in the direction of the overturn.
  • the seatbelt has become the intervention system of choice.
  • the simplest geometric considerations demonstrate that the seatbelt will fully protect an operator's head and torso from the overhead guard. Testing of forklift trucks reveals that occasionally a limb will be pinched by an upright. On unimproved surfaces, safety professionals generally agree that the seatbelt provides an effective countermeasure. The seemingly intractable problem is the low seatbelt usage on industrial vehicles.
  • the standards require that the overhead guard and its mounting be capable of withstanding an impact test in which a test load comprising a bundle of 2 X 4 normal construction grade lumber 12 feet long and not exceeding 40 inches in width and with an aggregate specified minimum weight is dropped onto the overhead guard in free-fall from an approximate horizontal position and from a height sufficient to develop a required impact in foot-pounds.
  • the permanent deformation of the overhead guard and its mounting after impact is measured between a horizontal plane tangent to the underside of the guard at the operator's position and a horizontal plane tangent to the upper surface of the steering wheel and must not be less than 10 inches between the planes.
  • the permanent deformation of the overhead guard and its mounting after impact must leave a distance of not less than 64 inches between the surface on which the operator stands during truck operation and the horizontal plane tangent to the underside of the overhead guard.
  • an overhead guard for an industrial vehicle comprising an arrangement of elements which provides compliance with a FOPS requirement for said industrial vehicle and which produces a headform acceleration having a Head Injury Criterion value in the range of about 0 to about 1000 as a result of a slowly induced vehicle roll without vehicle translation (quasi-static initial conditions) upon contact with a rigidly mounted standard adult anthropomorphic impact headform.
  • an overhead guard for an industrial vehicle comprising a substantially vertical support member having a base end and a top end, the base end being suitable for attachment to the industrial vehicle.
  • a substantially horizontal midplane guard member is cantilevered from the top end of the vertical support member and constitutes the foundational member for the falling object protection structure.
  • a pair of rollover limiting struts disposed perpendicular to the vertical support member and the horizontal midplane guard member and extending to a width of the industrial vehicle are rigidly connected on opposite sides of a vertical midplane formed by the vertical support member and the horizontal midplane guard member to the vertical support member or the horizontal midplane guard member proximate the top end of the vertical support member.
  • the overhead guard further comprises a canopy comprising at least one top plane guard member extending laterally from the horizontal midplane guard member on both sides of the vertical midplane formed by the vertical support member and the horizontal midplane guard member, in which at least one top plane guard member is resistant to a downward acting force, yet, in accordance with at least one embodiment, provides for retraction or removal of the canopy in the event of an industrial vehicle rollover.
  • midplane is intended to refer to a longitudinal vertical plane that includes the longitudinal centerline of the operator's seat and, thus, the operator's head when normally seated.
  • the midplane will include the centerline of both the operator's seat and the industrial vehicle.
  • the midplane will include the centerline of the operator seat but not include the centerline of the vehicle.
  • HIC Head Injury Criterion
  • a ⁇ is the associated acceleration-time history in the orthogonal left and right headform direction
  • a ⁇ is the corresponding acceleration-time history in the orthogonal up and down headform direction
  • t is the beginning of an arbitrary time interval
  • t 2 is the end of the time interval.
  • the canopy comprises at least one top plane guard member in the form of a rigid grillage which, during rollover, is moved or retracted or rotated or shifted into a position where it cannot contact an operator who dismounts the vehicle in the rollover direction.
  • the canopy comprises a plurality of top plane guard members extending laterally from the horizontal midplane guard member on both sides of the midplane.
  • at least a portion of said canopy is frangible.
  • Fig. 1 is a diagram of a side view of a forklift truck showing the basic structural members of the falling object protection structure of the overhead guard of this invention
  • Fig. 2 is a diagram of a top view of a forklift truck rolled onto its side showing the basic structural members of both the falling object protection structure and the rollover protection structure of the overhead guard of this invention
  • Fig. 3 is a diagram showing an end view of an industrial vehicle rolled onto its side with the overhead guard in accordance with one embodiment of this invention in contact with a rigidly mounted headform;
  • Fig. 4 is a perspective view of a forklift truck with an overhead guard in accordance with one embodiment of this invention
  • Fig. 5 is a rear view of the forklift truck with overhead guard shown in Fig. 4;
  • Fig. 6 is a top view of a portion of the falling object protection structure of an overhead guard in accordance with one embodiment of this invention.
  • Fig. 7 is a top view of a portion of the falling object protection structure of an overhead guard in accordance with another embodiment of this invention.
  • Fig. 8 is a top view of a portion of the falling object protection structure of an overhead guard in accordance with one embodiment of this invention.
  • Fig. 9 is a perspective view of a portion of the falling object protection structure of an overhead guard in accordance with one embodiment of this invention.
  • Fig. 10 is a top view of a portion of the falling object protection structure of an overhead guard in accordance with the embodiment shown in Fig. 9;
  • Fig. 11 is a perspective view of the falling object protection structure of an overhead guard in accordance with one embodiment of this invention.
  • Fig. 12 is a perspective view of a variant of the falling object protection structure of an overhead guard in accordance with the embodiment of this invention shown in Fig. 11;
  • Fig. 13 is a perspective view of a portion of the falling object protection structure of an overhead guard in accordance with one embodiment of this invention.
  • Figs. 14a, 14b, and 14c depict operation of the portion of the falling object protection structure of the overhead guard shown in Fig. 13 during tipping of an industrial vehicle;
  • Fig. 15 is a perspective view of a portion of the falling object protection structure of an overhead guard in accordance with one embodiment of this invention
  • Fig. 16 is a frontal view of a portion of the falling object protection structure of an overhead guard in accordance with one embodiment of this invention
  • Fig. 17 is a top view of an overhead guard employing a grillage-style canopy in accordance with one embodiment of this invention.
  • Fig. 18 is a view of the overhead guard shown in Fig. 17 in the direction of the arrows of the line A-A;
  • Fig. 19 is a perspective view of an overhead guard employing a grillage-style canopy in accordance with one embodiment of this invention.
  • Figs. 20a and 20b are side views of the overhead guard shown in Fig. 19 showing operation of the grillage-style canopy so as to avoid striking of an operator during a vehicle rollover;
  • Fig. 21 is a front view of the overhead guard shown in Fig. 20a in the direction of the arrows of the line A-A;
  • Figs. 22a and 22b show a top view of an overhead guard having a retractable grillage-style canopy in accordance with one embodiment of this invention
  • Fig. 23 is a perspective view of the skeletal structure for an overhead guard in accordance with one embodiment of this invention.
  • Fig. 24 is a front view of the overhead guard shown in Fig. 23 viewed in the direction of the arrows of the line A-A with a slidable canopy disposed thereon;
  • Figs. 25a and 25b show a top view of an overhead guard showing the slide kinematics of the grillage-style canopy in accordance with one embodiment of this invention
  • Fig. 26 is a perspective view of the skeletal portion of an overhead guard in accordance with one embodiment of this invention
  • Fig. 27 is a side view of the overhead guard shown in Fig. 26 with a slidable canopy disposed thereon;
  • Fig. 28 is a top view of the overhead guard shown in Figs. 26 and 27 showing the slide kinematics of the grillage-style canopy in accordance with one embodiment of this invention.
  • the overhead guard constitutes a crushing hazard between the vehicle operating surface and the side edges of the canopy and the side mounted uprights.
  • the overhead guard of this invention eliminates the side mounted uprights of conventional overhead guards and, thus, their associated dangers by location of a single upright in the longitudinal midplane of the industrial vehicle as shown in Figs. 1 and 2.
  • Industrial vehicle 10, depicted as a forklift truck, comprises an overhead guard 11 in accordance with this invention having both a falling object protection structure and a rollover protection structure.
  • the overhead guard of this invention may be applied to any industrial vehicle requiring falling object protection and rollover protection including front end loaders, tractors, bulldozers, compactors, and turf trucks.
  • the overhead guard of this invention may be produced from any suitable materials formed into weight reducing structural shapes.
  • overhead guard 11 comprises substantially vertical support member 12 having base end 15 and top end 16, base end 15 being suitable for attachment to the industrial vehicle 10.
  • base end 15, as shown in Figs. 1 and 2 may be provided with base plate 17 which is bolted to the industrial vehicle body.
  • overhead guard 11 further comprises substantially horizontal midplane guard member 13 cantilevered from top end 16 of vertical support member 12.
  • horizontal midplane guard member 13 is disposed in a vertical longitudinal plane that contains the centerline of the operator's seat of the industrial vehicle and, thus, the centerline of an operator's head when the operator is normally seated. Horizontal midplane guard member 13 thus forms the main load resisting member of the falling object protection structure of the overhead guard of this invention.
  • a pair of rollover limiting struts 14 disposed perpendicular to vertical support member 12 and horizontal midplane guard member 13 and extending to the width of the industrial vehicle are rigidly connected on opposite sides of the midplane formed by vertical support member 12 and horizontal midplane guard member 13 to either vertical support member 12 or horizontal midplane guard member 13 proximate to the top end 16 of vertical support member 12.
  • a force distribution plate 19 Connected to the free end of each rollover limiting strut is a force distribution plate 19.
  • rollover of industrial vehicle 10 is restricted to about 90° and maintains a safety gap in the rolled over condition of the vehicle indicated by arrow 24 between horizontal midplane guard member 13 and the operating surface 26 which is approximately half the width of industrial vehicle 10.
  • the overhead guard of this invention is designed in such a fashion that, in additon to satisfying its FOPS requirements, in a worst case impact scenario involving a slowly induced roll without vehicle translation, the impact of the canopy elements comprising the overhead guard with a rigidly mounted standard adult anthropomorphic impact headform, as shown in Fig. 3, having two inches of clearance above a flat horizontal surface, will not give rise to resultant headform accelerations greater than a Head Injury Criterion (HIC value) of about 1000.
  • HIC value Head Injury Criterion
  • the overhead guard of this invention further comprises a canopy comprising at least one top plane guard member movably connected to and extending laterally from horizontal midplane guard member 13 on both sides of the midplane formed by horizontal midplane guard member 13 and vertical support member 12, which top plane guard members are resistant to a downward acting force.
  • the canopy comprises a plurality of such top plane guard members 18.
  • the top plane guard member is in the form of a rigid grillage connected to the horizontal midplane guard member 13 and/or the rollover limiting struts 14. The canopies thus formed are retractable or removable upon tipping of the industrial vehicle to prevent them from entering the safety gap 24 shown in Fig. 2 upon a rollover incident.
  • horizontal midplane guard member 13 is a cantilevered longitudinal circular tube to which a plurality of top plane guard members 18 are vertically rotatably connected, thereby forming a grid or mesh structure to intercept falling objects that could enter the operator's space.
  • Top plane guard members 18 are formed using lightweight materials and weight reducing structural forms and comprise a ring structure at one end fitted around circular tube/horizontal midplane guard member 13. If subjected to upward force components, top plane guard members 18 will rotate freely about circular tube/horizontal midplane guard member 13, thereby limiting the force transmitted to a victim in a rollover crush scenario.
  • the direction of free rotation of top plane guard members 18 is indicated by arrows 27 shown in Fig. 5. It should be noted that only a few of top plane guard members 18 will typically contact a victim in a given rollover incident; thus, impact is limited to the weight of only a few lightweight members.
  • top plane guard members 18 Resistance of top plane guard members 18 to a downward acting force in accordance with the embodiment shown in Figs. 4 and 5 is provided by stops 19, 28 as shown in Fig. 5.
  • the overhead guard of this invention provides both falling object protection and rollover protection and maintains a "non-crushing" distance from the vehicle operating surface even during rollover. This is the direct opposite of conventional rollover protection systems.
  • blind spots associated with the vertical members in conventional overhead guard systems are entirely eliminated by this invention.
  • top plane guard members 18 are hingedly connected to horizontal midplane guard member 13 whereby top plane guard members 18 will rotate, either horizontally or vertically, during a rollover event.
  • top plane guard members 18 are connected to horizontal midplane guard member 13 by horizontal hinge 20 and hinge pin 25.
  • top plane guard members 18 are connected to horizontal midplane guard member 13 by near side vertical hinges 22.
  • top plane guard members 18 are connected to horizontal midplane guard member 13 by far side vertical hinges 23.
  • horizontal midplane guard member 13 acts as a stop which prevents top plane guard members 18 from rotating downward when acted upon by a downwardly acting force, such as a falling object.
  • horizontal midplane guard member 13 forms a plurality of slots 21 as shown in Fig. 9.
  • Top plane guard members 18 are slidably disposed within slots 21, thereby providing a very effective method of resisting downward acting forces.
  • slots 21 are formed by horizontal midplane guard member 13 in a manner whereby the top plane guard members 18 inserted in slot 21 are disposed at a horizontal angle as shown in Fig. 9.
  • top plane guard members 18 As shown in Figs. 9 and 10, none of these slidably connected top plane guard members 18 will rotate downward and, thus, will all resist falling objects. Rather, top plane guard members 18 will come in contact with the operating surface during a rollover. However, due to the slidability of these members within the horizontal midplane guard member 13, these members can be equipped to automatically retract during the tipping phase of a rollover incident so that no impact or crushing hazard can occur by them. Similarly, in accordance with the embodiments shown in Figs. 11 and 12, top plane guard members 18 are horizontally slidably connected to horizontal midplane guard member 13 in a manner which enables top plane guard members 18 to slide freely in the transverse direction. As in the embodiment shown in Figs.
  • top plane guard members 18 are resistant to a downward acting force, which resistance is not compromised by their sliding capability. If sliding top plane guard members 18 are struck in a rollover event, the slidable members will simply push into horizontal midplane guard member 13 and impose a limited impact on an operator who might be caught in the trajectory of the falling object protection structure. Only those top plane guard members striking the operator will slide, thereby limiting the total weight of the falling object protection structure striking the victim. To further reduce the mass of the striking top plane guard members, sliding top plane guard members 18, as shown in Fig. 11, are staggered.
  • Fig. 13 shows one embodiment of the overhead guard of this invention having means for rotating top plane guard members 18 into a vertical upward direction during the tipping phase of an industrial vehicle rollover so that no impact or crushing hazard occurs to the operator.
  • a pendulum or vertical weight 31 is rigidly fastened to continuous hinge pin 25.
  • Tipping of horizontal midplane guard member 13 in a counterclockwise direction produces the same action as rotating hinge pin 25 clockwise.
  • Top plane guard members 18 remain in a horizontal position during tipping of the industrial vehicle because the weight of pendulum 31 maintains a vertical attitude as shown in Figs. 14a, 14b, and 14c.
  • Fig. 14a shows the system at 0° tipping
  • Fig. 14b shows the system at a 45° tip angle
  • Fig. 14c shows the system at a 90° tip angle.
  • the overhead guard comprises pendulum means for rotating at least one of the top plane guard members 18 in an upward direction upon tipping of the industrial vehicle.
  • the pendulum means comprises a hinge 23 having a hinge pin 25 connecting top plane guard member 18 to horizontal midplane guard member 13, pendulum 31 rigidly connected to hinge pin 25, lifting bar 32 disposed parallel to top plane guard member 18 and having one end connected to hinge pin 25, and stop bar 33 extending pe ⁇ endicular to top plane guard member 18 and contacting a top side of lifting bar 32, one end of stop bar 33 being connected to top plane guard member 18.
  • top plane guard member 18 has an overhang 74 which restricts the rotation of top plane guard member 18 to somewhat less than but close to 90° in the clockwise direction.
  • any top plane guard member 18 can be independently rotated within the limits imposed by the horizontal midplane guard member 13 and the overhang 74; (2) when the vehicle is in its upright position, the top plane guard members 18 individually and collectively cannot be rotated, i.e., lifted, to a complete vertical attitude because of the restriction imposed by the overhangs 74.
  • the pendulum 31 can be sized such that during tipping of the vehicle in the direction of the top plane guard members 18 due to a rollover incident, all top plane guard members 18 will be rotated relative to the horizontal midplane guard member 13 by the passive medium of gravity acting on the pendulum 31 ; (4) furthermore, the pendulum can be sized such that during tipping of the vehicle in the direction of the top plane guard members 18 due to a rollover incident, gravity will tend to keep the pendulum 31 vertical, with the consequence that all top plane guard members 18 will be rotated relative to the horizontal midplane guard member 13 by the gravitational action of the pendulum in such a way as to maintain their initial horizontal attitude, hence will not encroach the operator safety gap 24 shown in Fig.
  • top plane guard members 18 can be independently rotated only within the limits imposed by the horizontal midplane guard member 13 and the overhangs 74, and because the vehicle rollover is limited to 90° by the rollover limiting struts 14 shown in Fig. 2, the top plane guard members 18 will not invade the operator safety gap 24 of Fig. 2 during either a counterclockwise or clockwise rollover incident; (6) because of the overhang 74, the top plane guard members 18 will not invade the previously mentioned operator safety gap 24 during an opposite side (clockwise for Fig.
  • top plane guard members 18, to limit the forces ti nsferred by them in a downward direction are countersprung by a helical spring counterweight system acting in an upward direction comprising hinge 23 and hinge pin 25 connecting top plane guard member 18 to horizontal midplane guard member 13 and helical spring 34 disposed around hinge pin 25 having tangs 35 and 36 in contact with top plane guard member 18 and horizontal midplane guard member 13 whereby top plane guard member 18 and helical spring 34 counterweigh each other with respect to horizontal midplane guard member 13.
  • top plane guard members 18 may be raised vertically or they may be rotated against horizontal midplane guard member 13 (Fig. 6).
  • the mechanisms may be driven by compressed air, explosives or springs, all of which may be activated during a vehicle rollover incident by tilt indicators and detectors set for critical tilt angles.
  • Top plane guard member 18 comprises a flex band 40, such as a webbing, plastic or steel mesh, and a plurality of light weight tubing segments 41 attached to an underside of flex band 40 by attachment means 42. Disposed between attachment means 42 are areas 43 of flex band 40 which are free of any attachment means whereby flex band 40 will bend upwardly at said areas when acted upon by an upwardly acting force.
  • the tubing segments 41 are height graded with the shorter height segments disposed toward the free end of top plane guard member 18.
  • the flex band 40 is replaced with any of a variety of hinge elements connecting the tubing elements 41.
  • horizontal midplane guard member 13 and rollover limiting struts 14 provide a foundation that supports a canopy in the form of a rigid grillage 50, as shown in Figs. 17, 18, 19, 25a, 25b, and 28, which covers the operator's station of the industrial vehicle and resists falling objects.
  • Rigid grillage 50 is connected to horizontal midplane guard member 13 and/or rotation limiting struts 14 such that, during vehicle rollover, grillage 50 is moved or retracted, or rotated or shifted, into a position where it cannot contact an operator dismounting the vehicle in the rollover direction.
  • the retraction, rotation or shifting into position is accomplished by gravity forces or stored energy which move the grillage 50 out of the way of the operator safety gap 24 shown in Fig. 2 whenever the vehicle tilt angles exceed predetermined settings, thereby precluding a vehicle operator from being struck by grillage 50 during the course of a rollover incident.
  • Various tilt meters which are known to those skilled in the art for use as safety devices in aerial lifts to prevent overturns may be used to indicate critical angles for the overhead guard of this invention.
  • rigid grillage 50 is fabricated in two sections, each of which is vertically rotatably connected by hinges 51 to horizontal midplane guard member 13.
  • rigid grillage 50 is fabricated as a single unit which is vertically rotatably connected by hinges 52 to rollover limiting struts 14.
  • rigid grillage 50 will rotate vertically around hinges 52 during a rollover incident.
  • braces 53 are secured to the underside of rigid grillage 50 on both sides of horizontal midplane guard member 13 as shown in Fig. 21.
  • Figs. 22a and 22b show a retractable grillage 55 fixedly connected to rollover limiting struts 14. In its normal protective position, as shown in Fig. 22a, retractable grillage 55 extends over horizontal midplane guard member 13, thereby providing the vehicle operator with protection against falling objects. During a rollover incident, retractable grillage 55 retracts in the direction of rotation limiting struts 14, as shown in Fig. 22b, so as to avoid striking of an operator dismounting from the vehicle during the rollover incident.
  • rigid grillage 50 is slidably connected to horizontal midplane guard member 13 and rollover limiting struts 14 by a captured type track system comprising tracks 60 and runner 61 whereby rigid grillage 50 is slidable, either longitudinally or transversely with respect to horizontal midplane guard member 13 during a vehicle rollover incident.
  • tracks 60 are fixedly secured to the top surfaces of horizontal midplane guard member 13 and rotation limiting struts 14 in a direction parallel to horizontal midplane guard member 13.
  • Runners 61 corresponding to tracks 60 are secured to the underside of rigid grillage 50 and slidably engage track 60.
  • rigid grillage 50 in the normal protective position, rigid grillage 50 is disposed over horizontal midplane guard member 13, thereby providing falling object protection for the vehicle operator.
  • rigid grillage 50 is longitudinally slidable as shown in Fig. 25b in the direction of rotation limiting struts 14, thereby precluding a dismounting operator from being struck by rigid grillage 50 during the course of a rollover incident.
  • Figs. 26, 27 and 28 show an alternative embodiment of an overhead guard to the embodiment shown in Figs. 23, 24, 25a and 25b whereby rigid grillage 50 is transversely slidable with respect to horizontal midplane guard member 13.
  • tracks 60 are secured to the top side of horizontal midplane guard member 13 and rollover limiting struts 14 in a direction pe ⁇ endicular to horizontal midplane guard member 13 to which rigid grillage 50 is slidably connected by track 61.
  • rigid grillage 50 slides transversely with respect to horizontal midplane guard member 13 during a rollover incident as shown in Fig. 28.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Cette invention se rapporte à un protège-conducteur (11) pour véhicule industriel (10), qui comprend un élément de support vertical (12) comportant une extrémité de base (15) et une extrémité supérieure (16), ainsi qu'un élément de protection médian horizontal (13) fixé en porte à faux à l'extrémité supérieure (16) de l'élément de support vertical (12). Deux jambes (14) empêchant le véhicule de se renverser, disposées perpendiculairement à l'élément de support vertical (12) et à l'élément de protection médian horizontal (13), sont assujetties à l'élément de support vertical (12) ou à l'élément de protection médian horizontal (13) à proximité de l'extrémité supérieure (16) de l'élément de support vertical (12). Un toit (18), possédant au moins un élément de protection supérieur, s'étend latéralement à partir de l'élément de support médian horizontal (13). Les éléments de protection supérieurs résistent aux forces exercées vers le bas, tout en étant rétractables, pivotants ou coulissants lors du renversement du véhicule industriel.
PCT/US1998/024172 1998-09-29 1998-11-12 Protege-conducteur pour vehicule industriel WO2000018678A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU14573/99A AU1457399A (en) 1998-09-29 1998-11-12 Industrial vehicle overhead guard

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16298598A 1998-09-29 1998-09-29
US09/162,985 1998-09-29

Publications (1)

Publication Number Publication Date
WO2000018678A1 true WO2000018678A1 (fr) 2000-04-06

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Application Number Title Priority Date Filing Date
PCT/US1998/024172 WO2000018678A1 (fr) 1998-09-29 1998-11-12 Protege-conducteur pour vehicule industriel

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AU (1) AU1457399A (fr)
WO (1) WO2000018678A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013050885A1 (fr) * 2011-10-07 2013-04-11 Merli Giovanni Structure de protection supérieure de véhicule
US9573547B2 (en) 2012-02-28 2017-02-21 Ag-Tech Industries Limited Flexible impact protection
CN110228770A (zh) * 2018-03-06 2019-09-13 比亚迪股份有限公司 一种可调节车辆护顶架装置及车辆
AU2022201409A1 (en) * 2021-12-17 2023-07-06 Segway Technology Co., Ltd. All-terrain vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2145262A5 (fr) * 1971-07-05 1973-02-16 Steinbock Gmbh
DE2216313A1 (de) * 1972-04-05 1973-10-18 Jungheinrich & Co Maschf Schutzdach fuer fahrzeuge, insbesondere gabelstapler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2145262A5 (fr) * 1971-07-05 1973-02-16 Steinbock Gmbh
DE2216313A1 (de) * 1972-04-05 1973-10-18 Jungheinrich & Co Maschf Schutzdach fuer fahrzeuge, insbesondere gabelstapler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013050885A1 (fr) * 2011-10-07 2013-04-11 Merli Giovanni Structure de protection supérieure de véhicule
US9573547B2 (en) 2012-02-28 2017-02-21 Ag-Tech Industries Limited Flexible impact protection
CN110228770A (zh) * 2018-03-06 2019-09-13 比亚迪股份有限公司 一种可调节车辆护顶架装置及车辆
AU2022201409A1 (en) * 2021-12-17 2023-07-06 Segway Technology Co., Ltd. All-terrain vehicle
AU2022201409B2 (en) * 2021-12-17 2023-10-19 Segway Technology Co., Ltd. All-terrain vehicle

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Publication number Publication date
AU1457399A (en) 2000-04-17

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