초록 ▼

Hydraulic device for directional control of a vehicle using a single lever. The device includes a hydraulic manipulator (1) with four outlets, forward/reverse and right/left. A selection device (4) with four selectors (5) in a bridge is connected to the manipulator, and the outputs are connected to

Hydraulic device for directional control of a vehicle using a single lever. The device includes a hydraulic manipulator (1) with four outlets, forward/reverse and right/left. A selection device (4) with four selectors (5) in a bridge is connected to the manipulator, and the outputs are connected to four motors for reverse-left, forward-left and reverse-right and forward-right control of the running components of the vehicle. A slide valve (7) with two positions, respectively one with direct connections and one with crossed connections, is inserted into the two feed lines of the motors (6 AVG, 6 AVD or respectively 6 ARG, 6 ARD). A control input (10) of the slide valve is connected to the FORWARD and REVERSE outputs of the manipulator, by virtue of which the control of the vehicle remains fully ergonomic, including for a rotation of the vehicle about a central vertical axis.

대표청구항 ▼

[ I claim:] [1.] Hydraulic device for directional control in forward, reverse, right, left directions of a vehicle using a single lever, comprising:a hydraulic manipulator with four hydraulic pressure reducers which are arranged in a cross while being associated in pairs to correspond respectively t

[ I claim:] [1.] Hydraulic device for directional control in forward, reverse, right, left directions of a vehicle using a single lever, comprising:a hydraulic manipulator with four hydraulic pressure reducers which are arranged in a cross while being associated in pairs to correspond respectively to the forward/reverse and right/left directions and which are actuated by a single oscillating cam with a central neutral position, to which a single actuation lever is attached,a selection device with four selectors arranged in a bridge, two opposite vertices of which are joined to respective outputs of the forward and reverse two pressure reducers of the manipulator, and the other two opposite vertices of which are joined to respective outputs of the right and left two pressure reducers, the outputs of the four selectors being connected respectively by feed lines to respective inputs for four variable-capacity motors for reverse-left, forward-left, reverse-right and forward-right control of the running components of the vehicle, anda slide valve with two positions, respectively a position with direct connections and a position with crossed connections, which is inserted into the two feed lines of the two FORWARD-LEFT and FORWARD-RIGHT control motors, or respectively into the two feed lines of the two REVERSE-LEFT and REVERSE-RIGHT control motors of the running components, a control input of the slide valve being connected to the FORWARD and REVERSE pressure reducers of the manipulator and by virtue of which, when the manipulator is moved to FORWARD or REVERSE, the slide valve is arranged on the functional position with direct connections and the FORWARD-LEFT and FORWARD-RIGHT, or respectively REVERSE-LEFT and REVERSE-RIGHT, selectors are respectively connected to the inputs of the two FORWARD-LEFT and FORWARD-RIGHT, or respectively REVERSE-LEFT and REVERSE-RIGHT, control motors of the running components, and, when the manipulator is moved only to LEFT or RIGHT without being moved simultaneously to FORWARD or REVERSE, the slide valve is brought into the functional position with crossed connections and the FORWARD-LEFT, or respectively REVERSE-LEFT, selector is connected to the input of the FORWARD-RIGHT or, respectively REVERSE-RIGHT, running-component control motor of the vehicle, and the FORWARD-RIGHT, or respectively REVERSE-RIGHT, selector is connected to the input of the FORWARD-LEFT, or respectively REVERSE-LEFT, running-component control motor of the vehicle, so that the vehicle then rotates on a central vertical axis to the right or to the left depending on whether the lever of the manipulator is oriented to the right or to the left, respectively, without being moved to FORWARD or REVERSE.