PARKING BRAKE DEVICE OF WORKING VEHICLE

• Main Authors: ISHIMARU, HIDEHARU, SHINYA, TOSHIHIKO
• Format: Patent
• Language: English; French; Japanese
• Published: 14.03.2002
• Edition: 7
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

A parking brake device of a working vehicle, wherein a brake releasing device is installed between a transmission controller controlling the operation of a transmission and a clutch, the pressure oil fed from a hydraulic pressure source to the clutch is led also to an accumulator for the brake releasing device, the pressure oil from the clutch is collected to a tank and the transmission acts as a parking brake when an engine is stopped and the pressure oil stored in the accumulator is kept stored therein, and the pressure oil stored in the accumulator is fed to the clutch when an electromagnetic selector valve for the brake releasing device is driven by a switch operation inside a cabin, whereby the parking brake can be released easily. Dispositif de freinage de stationnement de véhicule de chantier, ce qui consiste en un système de défreinage monté entre un organe de commande de transmission et un embrayage, dont l'huile de pression provenant d'une source de pression hydraulique alimente également un accumulateur du système de défreinage et est recueillie depuis l'embrayage dans un réservoir, la transmission jouant le rôle de frein de stationnement quand le moteur est arrêté et l'huile de pression restant dans l'accumulateur. L'huile de pression contenue dans cet accumulateur alimente l'embrayage quand une électrovanne de sélection du système de desserrage de frein est commandée par un commutateur à l'intérieur d'une cabine, ce qui permet de desserrer sans difficultés le frein de stationnement.