Abrégé

The invention concerns a gearshift (10) for a transmission of a vehicle, in particular for a powershift transmission of a mining or agricultural vehicle. The gearshift (10) includes a body (12) containing a valve bank (14) having a number of outlets (20, 22). The outlets (20, 22) are, in use, in fluid communication with actuators on the transmission responsible for selecting different transmission ratios. The gearshift (10) further includes a selector (28) for controlling the flow of fluid to different valve outlets (20, 22). The selector (28) is movable between a number of positions which allow different fluid flow paths through the valve bank (14) in order to activate and deactivate different actuators. By allowing fluid flow to different actuators, different gear ratios in the transmission are selected. The invention also concerns a method of controlling a gearshift (10) for a transmission of a vehicle.

Classes IPC  ?

• F16H 59/04 - Appareils de sélection du rapport

Abrégé

The invention concerns a self-propelled vehicle for use in the mining, industrial and/or agricultural industry. The vehicle is typically a hauler, grader or container handling vehicle and includes a modular chassis (20) comprising at least a forward section (22) and a rear section (24) which are detachably connectable to each other by means of complementary connecting means (30) located on each section. The vehicle (10) has a cabin (40) which has a roll-over protection structure and a fall on protection structure. Ideally the cabin (40) also includes an internal module defining a seating arrangement which has at least one seat for an operator. The cabin (40) is also detachably connectable to the chassis (20) so that it is replaceable as a single unit. The vehicle further includes a pneumatic gearshift and pneumatic fail-safe brake system which meet the safety requirements for operation underground in a mine.

Classes IPC  ?

• B60T 17/04 - Aménagement des tuyauteries, valves de tuyauterie, p. ex. valves de coupure, couplages ou tuyaux flexibles
• B62D 63/02 - Véhicules à moteurs
• B62D 33/06 - Cabines de conducteur
• B62D 21/18 - Châssis, c.-à-d. armature sur laquelle une carrosserie peut être montée caractérisés par le type de véhicule et non couverts par les groupes
• F16H 61/00 - Fonctions internes aux unités de commande pour changements de vitesse ou pour mécanismes d'inversion des transmissions transmettant un mouvement rotatif
• B62D 49/06 - Tracteurs adaptés à des usages multiples
• E02F 9/16 - Cabines, plates-formes ou similaires pour le conducteur
• B60W 10/11 - Boîte de vitesses étagée

Abrégé

The invention concerns a fail-safe brake system for use in combination with a service brake system of a vehicle. The fail-safe brake system includes a high pressure fluid source for supplying fluid to a protection valve though an inlet line to the valve. The inlet line splits into a number of independent circuits which include braking means for braking the vehicle when the system is activated though a network of lines running from the protection valve to the braking means. The system further includes control valves for controlling the activation and deactivation of the fail-safe brake system by controlling the flow of fluid in the circuits. By controlling the fluid flow in the circuits, the activation and deactivation of the braking means are controlled. The fail-safe brake system may be activated and deactivated independently of the service brake system of the vehicle, thereby allowing the braking means to function independently of the service brakes of the vehicle. The invention also concerns a method of activating and deactivating the failsafe brake system.

Classes IPC  ?

• B60T 15/02 - Valves d'application et de relâchement des freins
• B60T 17/18 - Dispositifs de sécuritéSurveillance

Abrégé

The invention concerns a cable handling apparatus which is used for winding and unwinding a flexible electrical cable, particularly in a mining environment. The apparatus has a rotatable drum (32) onto and from which the cable (64) can be wound and unwound. A drum drive (36, 122) is provided to rotate the drum, at least during cable winding, about its axis. There is also a feeder (42) configured to feed cable onto and off the drum, in a direction transverse to the axis of the drum, during cable winding and unwinding, as well as a feeder drive arranged, at least during cable winding, to move the feeder lengthwise relative to the drum, in a direction parallel to the axis of the drum, at such a speed that the feeder moves a distance substantially equal to or slightly greater than a diameter of the cable for each rotation of the drum by the drum drive.

Classes IPC  ?

• B65H 57/02 - Tiges ou plaques fixes
• B65H 57/14 - Poulies, rouleaux ou barres rotatives
• B65H 75/44 - Détails de structure
• B65H 75/42 - Noyaux, gabarits, supports ou pièces de tenue pour matériau bobiné, enroulé ou plié, p. ex. tourets, broches, bobines, tubes à cannette, boîtes spécialement adaptés ou montés pour stocker, dérouler de façon répétée et stocker à nouveau des longueurs de matériau prévues pour des buts particuliers, p. ex. tuyaux souples à poste fixe, câbles de force impliquant l'utilisation d'un noyau ou d'un gabarit intérieur formant support pour le paquet de matériau stocké mobile ou transportable fixé à des outils ou machines mobiles ou en faisant partie