A steering system for an articulated truck. The articulated truck is formed of a tractor and a trailer and an articulation joint. The steering system includes a hydraulic cylinder, with a cylinder barrel and a piston. The steering system provides for changes in angle between the tractor and the trailer. The hydraulic cylinder includes a snubbing tube projecting into the cylinder barrel. A hydraulic fluid passage opens into the cylinder barrel within the snubbing tube. The snubbing tube includes a main slot and a plurality of channels each extending between an interior and an exterior of the snubbing tube. The plurality of channels have a cross sectional area smaller than a cross sectional area of the main slot. When the articulated truck is steered, the piston moves in the cylinder barrel and the snubbing tube dampens the movement to prevent forces generated by the piston damaging the articulated truck.

Various embodiments of the present invention are generally directed to a systems and methods for assessing turns made by one or more vehicles. According to various embodiments, the system is configured to identify, based telematics data captured from the vehicles, turns executed by the vehicle during a particular time period. The system is further configured to analyze the identified turns to determine and display various turn segment attributes to a user in order to provide an indication of turns having an abnormal or excessive duration and/or to provide overall efficiency-indicative information relating to the vehicle turns.

An electric steering device includes an electric actuator which generates a steering assist force for a steering mechanism of a vehicle, a control unit which controls the steering assist force generated from the electric actuator based on an operation of a steering wheel by a driver, an ignition signal detection unit which detects presence or absence of an ignition signal of the vehicle, and a speed acquisition unit which acquires a running speed of the vehicle. In a case that the ignition signal is not detected and the running speed is a predetermined speed or more, the control unit reduces an upper limit of the steering assist force generated from the electric actuator so as to be smaller than an upper limit in a case that the ignition signal is detected.

A steering angle detecting apparatus for vehicles includes a vernier calculating section that performs vernier calculation based on a steering shaft angle and a motor angle, a neutral period specifying section that specifies a neutral period including a neutral point based on a reference angle calculated by the vernier calculation in the vernier calculating section, and a neutral point specifying section that specifies the neutral point from the neutral period and a stored neutral point value, and outputs a steering angle the neutral point of which is specified.

Operating a vehicle in an automated steering control mode wherein the vehicle includes a controller operatively coupled with an articulated steering system and a front axle steering system. The controller is configured to identify a desired path of curvature of the vehicle and determine a front axle steering angle of the front axle steering system and command the front axle steering system to operate at the front axle steering angle and also determine an articulation steering angle of the articulated steering system and command the articulated steering system to operate at the articulation steering angle. A further form includes operating front and rear ground engaging means at a designated speed, and thereafter operating the articulated steering system and the front axle steering system based on the designated speed being greater than a transport speed threshold, less than a field speed threshold or between the two.

Operating a vehicle in an automated steering control mode wherein the vehicle includes a controller operatively coupled with an articulated steering system and a front axle steering system. The controller is configured to identify a desired path of curvature of the vehicle and determine a front axle steering angle of the front axle steering system and command the front axle steering system to operate at the front axle steering angle and also determine an articulation steering angle of the articulated steering system and command the articulated steering system to operate at the articulation steering angle. A further form includes operating front and rear ground engaging means at a designated speed, and thereafter operating the articulated steering system and the front axle steering system based on the designated speed being greater than a transport speed threshold, less than a field speed threshold or between the two.

A hydraulic system (40) for a work machine comprising a priority circuit (41) including at least a first priority actuator (47, 48) and a priority control valve (58) for controlling the supply of hydraulic fluid to the first priority actuator (47, 48) and for providing a load sense signal indicative of the load acting on the first priority actuator (47, 48); an auxiliary circuit (42) including at least a first auxiliary actuator (51) and at least a first auxiliary control valve (80) for controlling the supply of hydraulic fluid to the first auxiliary actuator (51); at least a first pump (46) for producing a flow of hydraulic fluid; and a priority valve (74) for distributing the flow from the pump (46) to the priority circuit (41) and auxiliary circuit (42) for operating the respective actuators thereof, with priority being given to the priority circuit (41) as a function of the load sense signal.

A hydraulic system (40) for a work machine comprising a priority circuit (41) including at least a first priority actuator (47, 48) and a priority control valve (58) for controlling the supply of hydraulic fluid to the first priority actuator (47, 48) and for providing a load sense signal indicative of the load acting on the first priority actuator (47, 48); an auxiliary circuit (42) including at least a first auxiliary actuator (51) and at least a first auxiliary control valve (80) for controlling the supply of hydraulic fluid to the first auxiliary actuator (51); at least a first pump (46) for producing a flow of hydraulic fluid; and a priority valve (74) for distributing the flow from the pump (46) to the priority circuit (41) and auxiliary circuit (42) for operating the respective actuators thereof, with priority being given to the priority circuit (41) as a function of the load sense signal.

The invention relates to a steering device for a steerable machine, particularly a construction machine, comprising a steering element for manual input of steering commands, a steering actuator for driving a steering adjustment of a travel unit of the construction machine, and a transmission device, which is arranged between the steering element and the steering actuator, the transmission device including an actuator orbitrol for driving the steering actuator. Furthermore, the invention relates to a construction machine having such a steering device, as well as to a method for steering a steerable machine, particularly a construction machine.

The invention relates to a steering device for a steerable machine, particularly a construction machine, comprising a steering element for manual input of steering commands, a steering actuator for driving a steering adjustment of a travel unit of the construction machine, and a transmission device, which is arranged between the steering element and the steering actuator, the transmission device including an actuator orbitrol for driving the steering actuator. Furthermore, the invention relates to a construction machine having such a steering device, as well as to a method for steering a steerable machine, particularly a construction machine.