WO2001025066A1 - Vehicule possedant un systeme de freinage auxiliaire - Google Patents

Vehicule possedant un systeme de freinage auxiliaire Download PDF

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Publication number
WO2001025066A1
WO2001025066A1 PCT/GB2000/003738 GB0003738W WO0125066A1 WO 2001025066 A1 WO2001025066 A1 WO 2001025066A1 GB 0003738 W GB0003738 W GB 0003738W WO 0125066 A1 WO0125066 A1 WO 0125066A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
braking system
road
auxiliary braking
vehicle according
Prior art date
Application number
PCT/GB2000/003738
Other languages
English (en)
Inventor
Peter Arthur Charles Chown
Original Assignee
Southfields Ancillary Vehicle Equipment Limited
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 Southfields Ancillary Vehicle Equipment Limited filed Critical Southfields Ancillary Vehicle Equipment Limited
Priority to AU75376/00A priority Critical patent/AU7537600A/en
Publication of WO2001025066A1 publication Critical patent/WO2001025066A1/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
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/12—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action
    • B60T1/14—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action directly on road

Definitions

  • This invention relates to a vehicle with an auxiliary braking system.
  • a vehicle comprising wheels, a main braking system, and an auxiliary braking system
  • the auxiliary braking system being such that it normally operates only when the vehicle is travelling and only when the main braking system is determined to be unable to stop the vehicle safely
  • the auxiliary braking system being such that it comprises a plurality of road-engaging means which are movable between a raised position in which the road-engaging means do not engage the road but are ready for use, and a lowered position in which the road-engaging means engage the road and provide auxiliary braking.
  • the vehicle of the present invention has the auxiliary braking system, it is able in emergency situations to stop in a shorter distance than would be the case if the same sized vehicle did not have the auxiliary braking system.
  • the auxiliary braking system may be effective to stop the vehicle skidding, or jack-knifing in the case of vehicles with trailers .
  • the vehicle may be any type of vehicle.
  • the vehicle may be a heavy lorry such for example as a four or six wheeled lorry.
  • the vehicle may also be an articulated lorry carrying a trailer.
  • the vehicle may alternatively be a car, van, coach, bus or a heavy goods vehicle.
  • the vehicle may be towing a caravan or a wide variety of different types of trailers.
  • the road-engaging means are positioned at a rear part of the vehicle This is the position at which the engagement of the road-engaging means with the road is most effective to stop skidding, especially m the case of long vehicles .
  • the road-engaging means will move between the raised and lowered positions over a straight vertical path.
  • the road-engaging means may move m other ways if desired so that, for example, the road-engaging means may move between the raised and the lowered positions over a curved path.
  • the road-engagmg means advantageously each includes a ram for moving the road-engagmg means between the raised and lowered positions.
  • the road-engagmg means will each have a road-engagmg surface made of a wearable material that does not cause substantial damage to a road an auxiliary braking position
  • the wearable material is preferably a rubber material.
  • the rubber material may be that currently employed for making tyres Other types of materials may be employed so that, for example, the wearable material may be a plastics material
  • the road-engaging means are pads.
  • the road-engaging means are wheels with brakes.
  • the vehicle may include a pressure sensor for determining when a braking force is being applied to the main braking system which is such that the vehicle will not be able to stop safely.
  • the pressure sensor may sense mechanical pressure applied to a brake pedal of the vehicle.
  • the pressure sensor may sense fluid pressure in the main braking system.
  • Other types of pressure sensor may also be employed.
  • Sensors other than pressure sensors may also be employed for determining when the auxiliary braking system is to be used.
  • the auxiliary braking system will be powered from the main braking system of the vehicle .
  • a separate system for powering the auxiliary braking system may however be employed if desired.
  • the auxiliary braking system may be hydraulically powered or pneumatically powered.
  • the vehicle may be one in which the auxiliary braking system is also able to move between the lowered position and a vehicle raising position.
  • the auxiliary braking means may extend beyond the lowered position to the vehicle raising position in order to raise an adjacent part of the vehicle off the ground, for example for changing a wheel on the vehicle the event of a puncture or the need to replace a tyre due to wear.
  • Figure 1 is a perspective view of part of a vehicle and illustrates an auxiliary braking system m a raised position;
  • Figure 2 is a perspective view which is similar to Figure 1 but illustrates the auxiliary braking system m a lowered position;
  • Figure 3 is a rear view of part of the vehicle as shown m Figure 1 with the auxiliary braking system being a raised position;
  • Figure 4 is a side view of the part of the vehicle as shown Figure 3 ;
  • Figure 5 is a rear view of part of the vehicle as shown m Figure 2 with the auxiliary braking system being in the lowered position
  • Figure 6 is a side view of the part of the vehicle as shown m Figure 5 ,
  • Figure 7 is a rear view like Figure 5 but shows the auxiliary braking system being used m a vehicle-raising jacking mode
  • FIG 8 is a side view of the vehicle as shown m Figure 7
  • the vehicle 2 comprises wheels 4, a mam braking system (not shown) , and an auxiliary braking system 6.
  • the mam braking system may be any known braking system employed on any known type of vehicle, and appropriate for that vehicle.
  • the mam braking system may be a hydraulic or pneumatic braking system, and it may employ brake pads or brake shoes on the wheels 4. Because mam braking systems are well known and because the present invention is not directed to the mam braking system, the mam braking system will not be described m detail .
  • the auxiliary braking system 6 is such that it normally operates only when the vehicle is travelling, and only when the ma braking system is determined to be unable to stop the vehicle to safety.
  • the purpose of having the auxiliary braking system being such that it normally operates only when the vehicle is travelling is to ensure that the auxiliary braking system does not normally operate when the vehicle 2 is stationary.
  • the pads 8 are positioned at a rear part of the vehicle. As can best be seen in Figure 2, there are four of the pads 8 but more or less of the pads 8 can be employed if desired. The positioning of the pads 8 at the rear of the vehicle 2 provides maximum beneficial effect from the auxiliary braking system 6 in assisting the vehicle 2 to stop safely without skidding.
  • the auxiliary braking system 6 is such that the pads 8 are each moved by a ram 12 between the raised and the lowered positions.
  • the ram 12 is shown having telescopic parts 14, 16.
  • the pads 8 are made of a wearable material that does not cause substantial damage to the road 10 in an auxiliary braking condition.
  • the wearable material will be a rubber material .
  • the wearable material such for example as the rubber material may be bonded to a support such for example as a metal support .
  • the vehicle 2 includes a pressure sensor (not shown) for determining when a braking force is being applied to the main braking system which is such that the vehicle 2 will not be able to stop safely.
  • the pressure sensor is a mechanical pressure sensor which senses mechanical pressure applied to a brake pedal (not shown) of the vehicle 2.
  • the auxiliary braking system 6 is powered from the main braking system of the vehicle.
  • the auxiliary braking system may thus be hydraulically powered or pneumatically powered, depending upon the type of vehicle 2.
  • Figures 7 and 8 illustrate how the auxiliary braking system 6 is also able to move between the lowered position shown in Figures 5 and 6 and a vehicle-raising position.
  • the rams 12 in the vehicle raising position, the rams 12 have further extended to raise the rear of the vehicle 2 sufficiently to raise the wheels 4 off the road 10. The wheels 4 can thus be changed if tyres 18 should become punctured or worn.
  • the auxiliary braking system 6 is such that the pads 8 only move to the vehicle-raising position shown in Figures 7 and 8 when the vehicle 2 is stationary and when an override switch (not shown) is operated. This ensures that the auxiliary braking system 8 does not raise the rear of the vehicle 2 during emergency braking utilising the auxiliary braking system.
  • the vehicle 2 can be any vehicle 2.
  • the road-engaging means in the form of the pads 8 may be replaced by wheels having their own braking system.
  • Sensors other than mechanical sensors may be employed.
  • the sensors may operate a valve such for example as a solenoid valve 4 for enabling air or hydraulic fluid to flow to the rams 12. Arrangements other than the rams 12 may be employed for moving the pads 8.
  • an emergency switch (not shown) may be fitted inside the driving cab of the vehicle 2 for manual operation of the auxiliary braking system 6.
  • the emergency switch may be positioned at any suitable position in the driving cab, for example on the vehicle steering wheel.
  • the over-ride switch for causing the auxiliary braking system to operate to raise the rear of the vehicle 2 as shown in Figures 7 and 8 can also be arranged at any suitable and appropriate position in the driving cab of the vehicle.
  • the vehicle may include a caravan or a small trailer. If the caravan or trailer starts to snake, the jack-knifing may be minimised.
  • the auxiliary braking system wheels may lower to the road surface and brake using the vehicle braking system or alternatively spring loaded tow hook braking.
  • the auxiliary braking wheels may also have a pre-set braking permanently applied, for example friction plates, disc or drum brakes which are partially set and fixed to give pre-determined braking.
  • a pre-set braking would apply via the wheels.
  • the wheels would raise automatically when the emergency is over (i.e. brakes released) .
  • a switch electrically operated by an inertia switch or a mercury switch may operate, lowering the auxiliary braking system automatically to the road surface. This could apply on any separately towed trailer.
  • the auxiliary braking system may also be lowered manually to stabilise the vehicle when loading or unloading as the auxiliary braking system may tend to lock up the main suspension when lowered.
  • auxiliary braking system In the event of a vehicle such as an articulated or four wheeled rigid vehicle severely leaning, for example when cornering, there could be an auxiliary braking system on either side of the vehicle operating independently or together.
  • Each auxiliary braking system may be fitted with wheels.
  • Each auxiliary braking system may lower either automatically or manually in order to assist in keeping the vehicle or trailer in a vertical position. This could prevent the vehicle from jack-knifing and overturning.
  • the auxiliary braking system may be lowered manually by the driver via a key switch or override electrical air operated system. This would prevent or deter the vehicle or trailer from being stolen.
  • the auxiliary braking system can be fitted to any type of road vehicle, including military road vehicles and motor cycles .

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

Véhicule (2) comprenant des roues (4), un système de freinage principal et un système de freinage auxiliaire (6). Ce système de freinage auxiliaire (6) est conçu de façon à fonctionner uniquement quand le véhicule (2) se déplace et quand le système de freinage principal est incapable d'opérer l'arrêt du véhicule (2) en sécurité. Ce système de freinage auxiliaire (6) comporte une pluralité de moyens (8) venant en contact avec la route et mobiles entre une position élevée dans laquelle ces moyens (8) ne sont pas en contact avec la route (10) mais sont prêts à être mis en service, et une position abaissée dans laquelle ces moyens (8) viennent en contact avec la route (10) afin de freiner le véhicule.
PCT/GB2000/003738 1999-10-01 2000-09-29 Vehicule possedant un systeme de freinage auxiliaire WO2001025066A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU75376/00A AU7537600A (en) 1999-10-01 2000-09-29 A vehicle with an auxiliary braking system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9923318.1 1999-10-01
GBGB9923318.1A GB9923318D0 (en) 1999-10-01 1999-10-01 A vehicle with an auxiliary braking system

Publications (1)

Publication Number Publication Date
WO2001025066A1 true WO2001025066A1 (fr) 2001-04-12

Family

ID=10861996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/003738 WO2001025066A1 (fr) 1999-10-01 2000-09-29 Vehicule possedant un systeme de freinage auxiliaire

Country Status (3)

Country Link
AU (1) AU7537600A (fr)
GB (1) GB9923318D0 (fr)
WO (1) WO2001025066A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE682568C (de) * 1937-05-04 1939-10-18 Fried Krupp Akt Ges Kraftfahrzeug fuer hoehere Geschwindigkeiten
FR1146576A (fr) * 1955-10-26 1957-11-13 Dispositif de sécurité pour freinage des véhicules en cas de défaillance des freins normaux
FR1357106A (fr) * 1963-02-20 1964-04-03 Dispositif de freinage auxiliaire pour véhicules automobiles
FR1517718A (fr) * 1966-06-01 1968-03-22 R L S A D A M M Soc Pour L App Dispositif d'immobilisation simultanée d'un ensemble de roulettes
DE2048011A1 (de) * 1970-09-30 1972-04-06 Jährling, Paul, χ 6900 Jena Schleuderbremse fur Straßenfahrzeuge
US3994369A (en) * 1975-05-08 1976-11-30 Lawrence Peska Associates, Inc. Emergency vehicle brake
DE8705368U1 (fr) * 1987-04-10 1987-06-25 Ehly, Matthias, 4049 Rommerskirchen, De
US5638923A (en) * 1995-10-05 1997-06-17 Liu; Juntain Snow brake system for vehicles
DE19811323A1 (de) * 1998-03-16 1999-09-23 Thomas Klaes Hydraulische Notbremse

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE682568C (de) * 1937-05-04 1939-10-18 Fried Krupp Akt Ges Kraftfahrzeug fuer hoehere Geschwindigkeiten
FR1146576A (fr) * 1955-10-26 1957-11-13 Dispositif de sécurité pour freinage des véhicules en cas de défaillance des freins normaux
FR1357106A (fr) * 1963-02-20 1964-04-03 Dispositif de freinage auxiliaire pour véhicules automobiles
FR1517718A (fr) * 1966-06-01 1968-03-22 R L S A D A M M Soc Pour L App Dispositif d'immobilisation simultanée d'un ensemble de roulettes
DE2048011A1 (de) * 1970-09-30 1972-04-06 Jährling, Paul, χ 6900 Jena Schleuderbremse fur Straßenfahrzeuge
US3994369A (en) * 1975-05-08 1976-11-30 Lawrence Peska Associates, Inc. Emergency vehicle brake
DE8705368U1 (fr) * 1987-04-10 1987-06-25 Ehly, Matthias, 4049 Rommerskirchen, De
US5638923A (en) * 1995-10-05 1997-06-17 Liu; Juntain Snow brake system for vehicles
DE19811323A1 (de) * 1998-03-16 1999-09-23 Thomas Klaes Hydraulische Notbremse

Also Published As

Publication number Publication date
GB9923318D0 (en) 1999-12-08
AU7537600A (en) 2001-05-10

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