25results about "Alternative steering control" patented technology

A valve (400) for hydraulic parallel work systems (100) is provided. The valve (400) includes a first pair of ports (416, 416a-b), a second pair of ports (422, 422a-b), a first connection, and a second connection. The first connection is between the first pair of ports (416, 416a-b) when the valve (400) is in a load reaction-enabling state (LRQN). The first connection transmits a load reaction (402) from a load at a steering actuator (140) to a steering device of a hydrostatic steering circuit (200). The second connection is between the second pair of ports (422, 422a-b) when the valve (400) is in an electro-hydraulic steering enabling state. The second connection fluidly connects a fluid source (110) to an electro- hydraulic steering circuit (300).

A system for hydraulic parallel work systems is provided. The system includes a fixed displacement pump (110), a closed-center circuit (300), an open-center hand metering unit (HMU) (200), and a tank (120). The closed-center circuit is in fluid communication with the fixed displacement pump. The open-center HMU is in fluid communication with the fixed displacement pump at an inlet port (204) of the HMU. The tank is fluidly connected to the inlet port of the HMU when the HMU is inactive.

A vehicle control arrangement includes a mechanical interface configured to be interposed between an existing steering wheel column shaft and steering wheel of a vehicle. The arrangement includes at least two drive units, each configured to selectively engage with said mechanical interface upon activation for actuating the steering column shaft to steer the vehicle. Also included are a detector arranged in register with said mechanical interface and configured to detect manual interaction with the steering wheel, and a controller arranged in signal communication with the detector and drive units, the controller configured to, when autonomous control is selected, engage and control at least one drive unit to effect autonomous steering of the vehicle, and when manual interaction is detected, to disengage said drive units. In this manner, a vehicle is retrofittable with said control arrangement to facilitate alternating between autonomous and manual control, as required.

The present disclosure provides an asphalt finisher capable of improving the accuracy of rudder angle control. The asphalt finisher is provided with a plurality of wheels including a steering wheel, a steering cylinder (54) that adjusts the rudder angle of the steering wheel, and a hydraulic pump (55) that supplies working oil to the steering cylinder (54). Furthermore, the asphalt finisher is provided with a proportional control valve (56p) disposed between the hydraulic pump (55) and the steering cylinder (54) and controlling the flow rate and direction of the working oil supplied to the steering cylinder (54), and a controller that controls the rudder angle by controlling the proportional control valve (56p).

A vehicle steering method is provided for a vehicle having a plurality of steering wheels operated by a plurality of users. The method includes obtaining steering information from the plurality of steering wheels of the plurality of users; obtaining priority information of the steering wheels of the corresponding plurality of users; and in response to a user of a steering wheel with a highest priority operates to steer the vehicle, reading the steering information of the steering wheel with the highest priority.

To reduce the case where operation becomes complicated when automatic steering is performed in a work vehicle (1), the work vehicle is provided with: a vehicle body (3) capable of traveling forward and backward by either manual steering by a steering wheel (30) or automatic steering; a driver's seat (10) provided to the vehicle body; an operation platform (9F, 9L, 9R) provided in front of or laterally of the driver's seat; a first operation section (50-53) for automatic steering provided to the operation platform; and a second operation section (54, 63) for automatic steering capable of being installed behind the driver's seat.

A system for hydraulic parallel work systems is provided. The system includes a fixed displacement pump (110), a closed-center circuit (300), an open-center hand metering unit (HMU) (200), and a tank (120). The closed-center circuit is in fluid communication with the fixed displacement pump. The open-center HMU is in fluid communication with the fixed displacement pump at an inlet port (204) of the HMU. The tank is fluidly connected to the inlet port of the HMU when the HMU is inactive.

A vehicle includes a steering input, a driver monitoring system, a controlled electromechanical actuator, a controller in communication with the steering input and the driver monitoring system, the controller including a memory storing a driver command interpreter module and a vehicle motion control module, and a processor, and wherein the driver command interpreter module and the vehicle motion control module are in communication with the steering input and the driver monitoring system. The driver command interpreter module is configured to estimate an upcoming vehicle maneuver based at least in part on a commanded steering operation from the steering input and a driver viewing direction from the driver monitoring system.

An asphalt finisher is provided and includes a plurality of wheels including a steered wheel; a steering cylinder configured to adjust a steered angle of the steered wheel; a hydraulic pump configured to supply hydraulic oil to the steering cylinder; a proportional control valve disposed between the hydraulic pump and the steering cylinder, and configured to control a flow rate and a direction of the hydraulic oil supplied to the steering cylinder; and a controller configured to control the proportional control valve to control the steered angle.

The invention relates to a motor vehicle assembly (1), preferably a cabin assembly. The motor vehicle assembly (1) comprises a structure (10), preferably a floor structure, with a first steering shaft passage (12) and a second steering shaft passage (14). Furthermore, the motor vehicle assembly comprises a steering shaft (16) which passes through the first steering shaft passage (12), and at least one line (26) which passes through the second steering shaft passage (14).

An asphalt finisher is provided and includes a plurality of wheels including a steered wheel; a steering cylinder configured to adjust a steered angle of the steered wheel; a hydraulic pump configured to supply hydraulic oil to the steering cylinder; a proportional control valve disposed between the hydraulic pump and the steering cylinder, and configured to control a flow rate and a direction of the hydraulic oil supplied to the steering cylinder; and a controller configured to control the proportional control valve to control the steered angle.

The steering device 100A of the industrial vehicle of the present application is provided with: an oil pressure pump 31; a steering cylinder 32; a manual steering circuit 40 that supplies hydraulic oil ejected from the oil pressure pump 31 to the steering cylinder 32 through a PS valve 41 that is opened and closed in accordance with operation of a steering wheel 33; an automatic steering circuit 50 that supplies hydraulic oil ejected from the oil pressure pump 31 to the steering cylinder 32 through an electromagnetic proportional valve 51 that is opened and closed in accordance with an arithmetic result of automatic driving control; and a priority valve 60 that is provided between the oil pressure pump 31 and the PS valve 41 and the electromagnetic proportional valve 51, that divides hydraulic oil to the manual steering circuit 40 and the automatic steering circuit 50, and that preferentially supplies hydraulic oil to the manual steering circuit 40 at a design flow rate that is equal to or greater than a prescribed flow rate at which the steering cylinder 32 is operated.

This disclosure provides an asphalt finisher capable of improving the precision of steering angle control. [Solution] The asphalt finisher includes a plurality of wheels, including steering wheels, a steering cylinder 54 that adjusts the steering angle of the steering wheels, and a hydraulic pump 55 that supplies hydraulic fluid to the steering cylinder 54. The asphalt finisher also includes a proportional control valve 56p positioned between the hydraulic pump 55 and the steering cylinder 54, which controls the flow rate and direction of the hydraulic fluid supplied to the steering cylinder 54, and a controller that controls the steering angle by controlling the proportional control valve 56p.

A vehicle including a steering input, a driver monitoring system, a controlled electro-mechanical actuator, a controller in communication with the steering input and the driver monitoring system, the controller including a memory and a processor, the memory storing a driver command interpreter module and a vehicle motion control module, and wherein the driver command interpreter module is configured to estimate an upcoming vehicle maneuver based at least in part on a commanded steering operation from the steering input and a driver viewing direction from the driver monitoring system.

A control valve for a steering system for a hydraulic machine includes a valve body defining a first actuator port, a second actuator port, a tank port, a pump port, and a manual steer interface. A directional control spool is disposed within the valve body to selectively couple the first actuator port, the second actuator port, the tank port, and the pump port. Additionally, an isolator spool is disposed within the valve body to selectively couple the directional control spool to each of the first actuator port, the second actuator port, and the pump port, and to selectively couple the pump port to the manual steer interface.

An information processing method according to the present embodiment is such that when it is determined that a first operating individual who performs an operation on a first operator and a second operating individual who performs an operation on a second operator are different for a vehicle comprising the first operator and the second operator, a processor controls the steering angle of the vehicle on the basis of the operation on the first operator or the operation on the second operator.

The present disclosure relates to a hydraulic steering device for an agricultural work vehicle comprising a steering pump for supplying working fluid; an automatic steering unit which is connected to the steering pump, and which changes, according to automatic steering performed by a control part, the traveling direction of the agricultural work vehicle by using the working fluid supplied from the steering pump; a manual steering unit which is connected to each of the steering pump and the automatic steering unit, and which changes, according to manual steering performed by the operation of a steering wheel, the traveling direction of the agricultural work vehicle, and a manual switching unit connected to each of the steering pump and the manual steering unit.

The invention relates to a handling machine comprising a hydraulic steering circuit (3), a first hydraulic control circuit (100), provided with a manual steering device (4), which allows steering cylinders (31- 34) of the hydraulic steering circuit (3) to be supplied with power, and a second hydraulic control circuit (200) which is used to control at least one hydraulic actuation cylinder (5) for actuating a handling member of the machine. The second circuit (200) comprises a hydraulic directional control valve (210), a hydraulic connection circuit (600) which is connected to the steering circuit, and a diverter valve (220) to which the connection circuit (600), the hydraulic actuation cylinder (5) and the hydraulic directional control valve (210) are connected. The diverter valve (220) is electrically controllable by a control unit (10) to selectively control the hydraulic actuation cylinder (5) and the same steering cylinders as those which are controllable by the first control circuit (100).

A cab assembly facilitating installation of a steering column on an original passenger side of a truck cab includes a dash assembly having a first section having a steering column opening configured to be located on the original passenger side of the truck cab and a second section configured to be located on an original driver side of the truck cab to cover a HVAC assembly, and a console bracket configured to support an original module of the truck cab thereon that is relocated from the original passenger side or the original driver side of the truck cab, the console bracket is positioned between a footwell on the original driver side of the truck cab and a footwell on the original passenger side of the truck cab.

A vehicle comprising a steering input, a driver monitoring system, a controlled electromechanical actuator, and a controller communicating with the steering input and the driver monitoring system, wherein the controller includes a memory and a processor, the memory stores a driver instruction interpretation module and a vehicle motion control module, and the driver instruction interpretation module is configured to estimate an impending vehicle maneuver at least partially based on an instructed steering operation from the steering input and a driver gaze direction from the driver monitoring system.

The present invention relates to a hydraulic steering device of an agricultural work vehicle, the hydraulic steering device comprising: a steering pump for supplying a working fluid; an automatic steering unit which is connected to the steering pump and uses the working fluid supplied from the steering pump to change the traveling direction of the agricultural work vehicle when automatic steering is performed by a control unit; a manual steering unit which is connected to the steering pump and uses the working fluid supplied from the steering pump to change the traveling direction of the agricultural work vehicle when manual steering is performed by operating a steering handle; and an automatic cut-off unit which is connected to the automatic steering unit and is for selectively cutting off the supply of the working fluid for the automatic steering to a steering cylinder of the agricultural work vehicle according to whether the manual steering is performed, wherein the automatic cut-off unit allows the working fluid for the automatic steering to be supplied to the steering cylinder, but uses a portion of the working fluid supplied from the steering pump to the manual steering unit to cut off the supply of the working fluid for the automatic steering to the steering cylinder when the manual steering is being performed.

A steering apparatus (100) is described, comprising: at least one hydraulic actuator (105) adapted to vary the orientation of at least one directional member (110) of a vehicle, a manual steering member (135), a first command device (140) adapted to command the hydraulic actuator (105), said first command device (140) comprising a first hydrostatic steering unit (150) hydraulically connectable to the hydraulic actuator (105), a first transmission shaft (145) adapted to mechanically connect the manual steering member (135) with the first hydrostatic steering unit (150), and a first electric motor (200), adapted to apply torsional torques to the first transmission shaft (145), a second command device (215) adapted to command the hydraulic actuator (105), said second command device (215) comprising a second hydrostatic steering unit (225), hydraulically connectable to the hydraulic actuator (105), a second transmission shaft (220) mechanically connected to the second hydrostatic steering unit (225), and a second electric motor (265), adapted to apply torsional torques to the second transmission shaft (220), a valve system (275) adapted to hydraulically connect the first hydrostatic steering unit (150) and / or the second hydrostatic steering unit (225) with the hydraulic actuator (105), and an electronic control system (500) configured to control the first electric motor (200), the second electric motor (265) and the valve system (275).