WO2010118768A1 - Dispositif cale - Google Patents

Dispositif cale Download PDF

Info

Publication number
WO2010118768A1
WO2010118768A1 PCT/EP2009/054402 EP2009054402W WO2010118768A1 WO 2010118768 A1 WO2010118768 A1 WO 2010118768A1 EP 2009054402 W EP2009054402 W EP 2009054402W WO 2010118768 A1 WO2010118768 A1 WO 2010118768A1
Authority
WO
WIPO (PCT)
Prior art keywords
chock
arrangement
wheel
chocks
release mechanism
Prior art date
Application number
PCT/EP2009/054402
Other languages
English (en)
Inventor
Stig Selmeryd
Original Assignee
Chockcart Sweden 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 Chockcart Sweden Ab filed Critical Chockcart Sweden Ab
Priority to PCT/EP2009/054402 priority Critical patent/WO2010118768A1/fr
Publication of WO2010118768A1 publication Critical patent/WO2010118768A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T3/00—Portable devices for preventing unwanted movement of vehicles, e.g. chocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/12—Ground or aircraft-carrier-deck installations for anchoring aircraft
    • B64F1/16—Pickets or ground anchors; Wheel chocks

Definitions

  • the present invention relates to chock arrangements in general, and specifically to an improved chock arrangement for use with wheels of vehicles such as airplanes.
  • Brake chocks are used to lock down a vehicle wheel and are typically used when the breaking ability of the vehicle itself is insufficient or missing, as is the case for airplanes that normally do not have a mechanical hand brake.
  • Brake chocks typically constitute heavy chocks with high surface friction and rubber is a common material used for such.
  • the chocks are typically used in pairs, one chock in front of, and one chock behind a wheel to be braked, consequently two separate chocks per wheel have to be carried and placed for each wheel. In position, the friction between the chock and the ground surface keeps the chock in place and if the wheel rolls against the chock, the chock is further locked into position whereby the wheel cannot keep rolling.
  • US patent 2720285 discloses a par of cylindrical brake chocks attached to a scissor like handle with one chock on each arm. This arrangement enables adjusting a pair of chocks on opposite sides of a wheel. Since the braking effect of the chocks is based on their weight, each chock tends to be heavy. Consequently, an arrangement according to US 2720285 is heavy to carry and the arrangement requires a separate transport unit.
  • US 3492083 discloses a brake chock with a lock pin, which can be pushed into the ground surface and lock the chock into position.
  • the lock pin is activated with an eccentric powered by a maneuver rod. By turning the maneuver rod back from a locking position, where the lock pin is pushed into the ground surface, the chock is only kept in position by its own weight and the load exerted by the wheel on the chock.
  • the load exerted by the wheel is quite substantial, and it requires a large force to make the chock leave the ground surface.
  • An object of the present invention is to provide an improved chock arrangement.
  • a further object of the present invention is to provide a chock arrangement, which is easier to unlock from a locked position than known chocks.
  • each chock (Ia, Ib) being connected to an end of a respective of two relative each other pivo tally arranged members (18a, 18b) of a handle arrangement (18).
  • each chock (Ia, Ib) comprises a release mechanism (8) configured for altering a size of a contact surface area between a bottom surface of the chock (Ia, Ib) and a ground surface.
  • a chock arrangement which is easy to use and transport, A chock arrangement which reduces the need for heavy lifting, and thus provides a more ergonomic work environment for an operator of the arrangement.
  • Fig. 1 illustrates an embodiment of an arrangement according to the present invention
  • Fig. 2a illustrates an enlarged section of an embodiment in an inactive state
  • Fig. 2b illustrates the embodiment of Fig, 2a in an activated state
  • Fig. 3 illustrates a side view of further embodiment of the present invention
  • Fig. 4 illustrates an enlarged section of part of Fig. 3
  • Fig. 5 illustrates a view from the back of an embodiment of the present invention
  • Fig. 6 illustrates a further embodiment
  • Fig. 7 illustrates a side view of a further embodiment of a chock arrangement when applied to a nose wheel of an airplane;
  • Fig. 8 illustrates a view from behind of the embodiment of Fig. 7;
  • the present disclosure concerns an improved chock arrangement for engaging and braking wheels of heavy vehicles, such as airplanes.
  • chock arrangements typically constitute heavy and cumbersome equipment. An operator handling the chocks need to lift and transport heavy chocks during application of the chocks on a vehicle. This results in an ergonomically incorrect working environment and may result in injury.
  • the present disclosure provides a chock arrangement which is easy to apply to and remove from a vehicle wheel and thus provides a more ergonomically correct working environment.
  • a basic embodiment of the present invention discloses a chock arrangement including a first and a second chock Ia, Ib, each chock Ia, Ib being connected to an end of a respective of two relative each other pivo tally arranged members 18a, 18b of a handle arrangement 18. Further, each chock Ia, Ib comprises a release mechanism 8 configured for altering a size of a contact surface area between a bottom surface of the chock Ia, Ib and a ground surface. In the Fig. 1 the position of a wheel when engaged by the chocks is also shown.
  • the relative pivotal arrangement of the two members 18a, 18b is shown as a scissor like arrangement, where the members are connected at a pivot point located between an upper end of the handle arrangement and the chocks.
  • the pivot point located separately from the actual handle arrangement, whereby the members 18a, 18b are each pivo tally arranged relative a common pivot point.
  • the release mechanism 8 is arranged adjacent to a bottom side of the chocks Ia, Ib and is configured to extend beneath the bottom side when a lever or maneuver rod 10 of the release mechanism displaced from an inactive position.
  • the release mechanism 8 is preferably configured to be displaced by rotation around a rotation point, where the rotational point is closer to the release mechanism than the handle, to provide a pivot effect.
  • other configuration of the release mechanism are possible.
  • the release mechanism comprises at least one pair of wheels 8b 1 , 8b2 arranged at one end of each chock Ia, Ib such that both wheels are in contact with a ground surface when the release mechanism is deactivated, whereby the pair of wheels 8b 1, 8b2 is stable in that position and are not prone to twist away from it.
  • the lift wheels 8b 1, 8b2 are not in contact with the ground surface when the release mechanism 8 is deactivated, but rater arranged in a neutral position away from or adjacent to the ground surface.
  • the lever 10 is pivoted and the pair of wheels is likewise rotated so as to enable one wheel to engage with the ground and provide a lifting action on part of the bottom surface of the chock.
  • the size of the contact area between the bottom surface of the chock and the ground surface is reduced, and the chocks can easily be moved. Consequently, the friction force between the bottom surface of the chock and the ground surface is reduced and the chock can easily be removed from the wheel, or be moved towards the wheel upon application of the chock arrangement.
  • the release mechanism can be adapted in some other way to provide the release of the bottom surface of the chock from the ground surface.
  • One possible embodiment would be to provide a mechanism that enables the release without a pivotal motion, such as for example a screw mechanism enabling a displacing member to extend beyond the bottom surface of the chock and displace it away from the ground plane. Thus reducing the contact area between the chock and the ground plane.
  • the chocks Ia, Ib can be further provided with friction enhancement means on at least part of the bottom surface so as to increase the contact friction.
  • part of the bottom surface can have sliding means arranged to improve transportation of the chock arrangement when the release mechanism is activated.
  • the sliding means could be arranged at the section of the chock that is still in contact with the ground plane when the release mechanism is activated. Possible embodiments of sliding means would be a low friction surface layer, wheels, rollers, etc.
  • the chock arrangement is preferably configured to be dividable into two parts, one part comprising the chocks 1 with the release mechanism 8 and the other part comprising a transport arrangement with wheels for the chock, and the handle arrangement 18.
  • the chocks Ia, Ib are preferably elongated and have a preferably triangular cross section.
  • the chocks are adapted to support a wheel with one side and act as a stop chock for e.g. airplane wheels.
  • the bottom surfaces of the chocks are arranged adjacent to the ground surface and locks the wheel in position.
  • the chocks preferably comprise rubber, but also other materials or composite materials are equally possible to utilize. Examples of such are rubber, polymers, metal, metal with a rubber coating etc. Although the chocks are depicted as having a substantially symmetrical triangular cross section, it is quite possible to have some other shape. Preferably, a wedge shaped chock, with one surface adjacent to the ground surface and one substantially angled surface for engaging the outer rim of a wheel.
  • each chock there is arranged a respective rotatable tube 2, extending through the two end surfaces of the chock, and the release mechanism comprises eccentric lift wheels 8a, 8b configured at both pipe ends.
  • each lift wheel can preferably be configured as a lift wheel pair 8b 1 , 8b2.
  • the lever or maneuver rod 10 of the release mechanism 8 extending upwards and at its other end is arranged a maneuver wheel 9 to enable maneuvering the chock sideways.
  • the rotatable tube 2 is rotated and the eccentric lift wheels 8a, 8b lose contact with the ground surface. If the maneuver rod 10 is rotated back to its upwardly position, the lift wheels 8a, 8b force the chock up from the ground surface such that it is loosened from its position and can be removed from the wheel it has previously fixated.
  • a transport wheel or wheel pair 15 for rolling the chocks forward and backwards.
  • the chock arrangement is configured to be pivoted relative the transport wheel pair 15 by using a handle 17 attached to the axis of the transport wheel pair with the handle arrangement 18.
  • the handle arrangement extends from the chock and diagonally upwards to provide a natural gripping position for a user grasping the handle 17.
  • a bracket 1 1 is attached to the axis of the transport wheel for attaching a fire extinguisher or other appliance, the bracket extends upwards from the transport wheel pair. Also, as an example, a wing cone 12 is disclosed.
  • the chocks Ia, Ib including the release mechanism 8 can be detached from the handle arrangement 18.
  • Fig. 4 illustrates the chocks as detached from the handle arrangement.
  • the chocks are transported to the wheel that needs to be braked.
  • the handle arrangement is detached from the chocks and moved away from the wheel. Consequently, one handle arrangement can be used to position multiple chocks.
  • the Fig. 4 clearly illustrates how the eccentrically adapted lift wheels 8a, 8b are attached to the rotatable tube 2 with pivot joints 7a, b with a length substantially shorter than the maneuver rod 10.
  • Fig. 5 illustrates another part of the first embodiment in greater detail and illustrates one of the chocks as seen from behind with the transport wheel pair 15.
  • the transport wheels 15 are attached to each other via a transport wheel axel 16.
  • the eccentrically arranged lift wheel pair 8b 1 , 8b2 arranged closest to the transport wheel is directly attached to the maneuver rod 10 and acts as a short extension of the maneuver rod as a pivot joint.
  • the lift wheel 8b comprises a lift wheel pair 8b 1 , 8b2 arranged adjacent to each other, which stabilizes the chock in an uplifted position since both lift wheels are potentially in contact with the ground surface and the maneuver rod is locked in that position.
  • Fig.6 illustrates a further embodiment of the chock arrangement seen from behind.
  • the figure illustrates how the handle arrangement with relative each other pivotally arranged members are arranged as a scissor like pair of handles, rotatably attached around a pivot joint 16. Chocks and transport wheel pairs are arranged to both handles via members.
  • the figure further illustrates how the pair of chocks can be easily arranged on a respective side of an airplane wheel 24.
  • Each handle is attached to a corresponding chock with members and both chocks have separate maneuver rods (not shown in the figure). Both chocks have a respective transport wheel pair and eccentrically arranged lift wheels not shown in the figure.
  • the handles are joined at the pivot joint 16, which enables the handles to be angled relative each other in a scissor like manner.
  • the chocks in the chock pair are forced towards each other to enable lodging the chocks on each side of a wheel 24 to be locked into position.
  • the chocks are loosened from contact with the ground surface and by pulling the handles apart, the chocks are released from the wheel 24. If the handles are pushed down towards the ground, the chocks leave contact with the ground completely and the arrangement can be rolled away on the transport wheel pair.
  • Fig. 7 illustrates another embodiment of the chock arrangement when engaging a nose wheel of an airplane, as seen from in front of the airplane nose 25.
  • the embodiment of the chock arrangement is especially adapted for receiving and locking a pair of wheels, e.g. nose wheel pair 24a, b and also the wheel hatch 27 is shown.
  • the embodiment of the chock arrangement comprises four chocks, where the figure illustrates the two chocks IaI , Ia2 configured at one side of the nose wheel pair. These chocks are arranged one in front of the other in the lengthwise direction of the chocks and are separated in the lengthwise direction such that each chock can be placed in front of each respective wheel in the nose wheel pair. Through both chocks runs a tube adapted to maneuver a lift wheel 8 and a to the same attached maneuver rod.
  • the chock arrangement is provided with a device for engaging an upper portion of the wheel and providing a further locking force by pressing the wheel firmer downwards towards the ground an the chocks.
  • One potential such device comprises a plate which is designed to fit around an upper rim of a wheel, and a tensioning device adapted to pull the plate downwards and securing the wheel from rolling and/ or turning on the chocks.
  • the tensioning device comprises a wire or tape, which fits into the plate and can be tightened by means of a lever or handle attached to one of the members.
  • Fig. 8 illustrates the embodiment of Fig. 7 seen from behind, more clearly showing the plate and tensioning device.
  • the chock arrangement can further be provided with indicators, adapted to activate when the arrangements has safely locked a wheel into position.
  • the indicators can be configured to be either of or a combination of visual, auditory or a transmitter in communication with a terminal or display. Thus providing a indication to an operator or the pilot that the wheels are locked.
  • the indicators can typically comprise a light or display that lights up when the arrangements is activated.
  • the indicators can be configured to transmit a signal which provides a visual indication on a screen accessible to the operator or pilot.
  • the chock arrangement can be provided with guiding lights to enable navigating the arrangement into position under poor visual conditions such as fog or darkness.
  • the chock arrangement can additionally be adapted to dock at a docking station when not in use.
  • the docking station can typically be provided with a charge arrangement adapted to charge rechargeable batteries or equipment on the chock arrangement when it is not in use.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Handcart (AREA)

Abstract

L'invention porte sur un dispositif cale de roue dans lequel une première et une seconde cale (1a, 1b) sont chacune reliées à une extrémité respective de deux éléments agencés de façon pivotante (18a, 18b) d'un dispositif poignée (18). Chaque cale (1a, 1b) comporte en outre un mécanisme de libération (8) configuré pour modifier la taille d'une aire de surface de contact entre une surface inférieure de la cale (1a, 1b) et la surface du sol.
PCT/EP2009/054402 2009-04-14 2009-04-14 Dispositif cale WO2010118768A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/054402 WO2010118768A1 (fr) 2009-04-14 2009-04-14 Dispositif cale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/054402 WO2010118768A1 (fr) 2009-04-14 2009-04-14 Dispositif cale

Publications (1)

Publication Number Publication Date
WO2010118768A1 true WO2010118768A1 (fr) 2010-10-21

Family

ID=40810688

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/054402 WO2010118768A1 (fr) 2009-04-14 2009-04-14 Dispositif cale

Country Status (1)

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WO (1) WO2010118768A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE46876E1 (en) 2008-11-24 2018-05-29 Norco Industries, Inc. Tire chock
US20210061239A1 (en) * 2019-08-28 2021-03-04 Thomas Milo Wheel Chock

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2577330A (en) * 1949-07-28 1951-12-04 Elmer O Johnston Airplane ground lock
JPS5953199U (ja) * 1982-09-30 1984-04-07 大栄興業株式会社 航空機用車輪止め
EP0796775A1 (fr) * 1996-03-21 1997-09-24 Kurt Alten Cale pour roues d'un véhicule
US20080230329A1 (en) * 2007-03-23 2008-09-25 Rita Slager Wheel Chock Assembly
EP1982881A1 (fr) * 2007-04-17 2008-10-22 Askové Kunststof Industrie B.V. Dispositif d'immobilisation pour roue de véhicule et procédé d'immobilisation d'une roue de véhicule

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2577330A (en) * 1949-07-28 1951-12-04 Elmer O Johnston Airplane ground lock
JPS5953199U (ja) * 1982-09-30 1984-04-07 大栄興業株式会社 航空機用車輪止め
EP0796775A1 (fr) * 1996-03-21 1997-09-24 Kurt Alten Cale pour roues d'un véhicule
US20080230329A1 (en) * 2007-03-23 2008-09-25 Rita Slager Wheel Chock Assembly
EP1982881A1 (fr) * 2007-04-17 2008-10-22 Askové Kunststof Industrie B.V. Dispositif d'immobilisation pour roue de véhicule et procédé d'immobilisation d'une roue de véhicule

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE46876E1 (en) 2008-11-24 2018-05-29 Norco Industries, Inc. Tire chock
US20210061239A1 (en) * 2019-08-28 2021-03-04 Thomas Milo Wheel Chock
US11814025B2 (en) * 2019-08-28 2023-11-14 Thomas Milo Wheel chock

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