Patent classifications
E02F9/02
UTILITY VEHICLE WITH OMNIDIRECTIONAL WHEELS
A utility vehicle having an omnidirectional wheel on one side of one or both of a front end of the vehicle and a rear end of the vehicle. The vehicle including a frame carrying a prime mover, the frame having the front and the rear end spaced apart along a longitudinal axis. The frame further having left and right sides spaced apart along a transverse axis. The vehicle including ground engaging member operatively attached to the frame and carrying the frame above a ground surface. The ground engaging member include an omnidirectional wheel and a conventional wheel, both nearest the front end and/or rear end of the frame on opposite sides of the frame.
Track speed compensation for engine speed droop
A system and method for compensating reduced track speed because of engine droop for a work machine is disclosed. The system may comprise a frame, an attachment coupled to the frame, a ground-engaging mechanism adapted to support the frame, an engine, a motor, a track speed sensor, an engine speed sensor, and a controller. The engine may drive the ground-engaging mechanism and attachment. The engine may be coupled through a variable speed transmission to the ground-engaging mechanism and the attachment. They variable speed transmission may include a hydrostatic circuit. The controller may be adapted to send an increased transmission command signal based on a drop in the engine speed signal when the work machine engages an increased load. The increased transmission command signal may increase a motor speed to cause an increase in track speed to compensate at least a portion of the reduced track speed from the engine speed droop.
WORK VEHICLE, MONITORING SYSTEM FOR WORK VEHICLE, AND TRACKED WORK VEHICLE
A work vehicle includes a rotary member, a support member, a sealing ring, a pressure controller, and a vehicle speed determination component. The rotary member has a first hydraulic fluid supply channel to supply the hydraulic fluid to the steering clutch, and is rotated by power from the transmission when the steering clutch is engaged. The sealing ring is disposed between the rotary member and the support member and is mounted adjacent to the connected part between the first hydraulic fluid supply channel and the second hydraulic fluid supply channel. The pressure controller controls the engagement pressure to be a specific first pressure when the vehicle speed is determined not to be equal to or greater than a specific speed, and controls the engagement pressure to decrease from the first pressure when the vehicle speed is determined to be equal to or greater than a specific speed.
WORK VEHICLE, MONITORING SYSTEM FOR WORK VEHICLE, AND TRACKED WORK VEHICLE
A work vehicle includes a rotary member, a support member, a sealing ring, a pressure controller, and a vehicle speed determination component. The rotary member has a first hydraulic fluid supply channel to supply the hydraulic fluid to the steering clutch, and is rotated by power from the transmission when the steering clutch is engaged. The sealing ring is disposed between the rotary member and the support member and is mounted adjacent to the connected part between the first hydraulic fluid supply channel and the second hydraulic fluid supply channel. The pressure controller controls the engagement pressure to be a specific first pressure when the vehicle speed is determined not to be equal to or greater than a specific speed, and controls the engagement pressure to decrease from the first pressure when the vehicle speed is determined to be equal to or greater than a specific speed.
REMOVABLE UNIVERSAL LATERAL TRACK EXTENSION SYSTEM
A universal removable lateral track extension system includes an extension track assembly removably couplable outboard of an original lateral track at a selected displacement width, the assembly further including a track frame plate, first and second receiver hitches, a drive coupler removably couplable to the corresponding drive sprocket of the tracked equipment, the drive coupler including a drive bearing assembly and connected drive sprocket in line with the extension track track rollers, a drive sprocket coupler and extension axle removably couplable from the drive sprocket connector to the drive bearing assembly, and a continuous track extending around the extension track track rollers and drive coupler.
Leveling system for lift device
A leveling system for a lift device includes a control system. The control system has programmed instructions to acquire operation data regarding operation of the lift device, fluidly couple a first leveling actuator and a second leveling actuator based on the operation data, acquire an update regarding the operation data, fluidly decouple the first leveling actuator and the second leveling actuator based on the update regarding the operation data, and selectively control the first leveling actuator and the second leveling actuator to (i) selectively reposition a first tractive element and a second tractive element relative to each other about a longitudinal axis defined by the lift device and (ii) selectively reposition the first tractive element and the second tractive element about a first lateral axis defined by the lift device.
Leveling system for lift device
A leveling system for a lift device includes a control system. The control system has programmed instructions to acquire operation data regarding operation of the lift device, fluidly couple a first leveling actuator and a second leveling actuator based on the operation data, acquire an update regarding the operation data, fluidly decouple the first leveling actuator and the second leveling actuator based on the update regarding the operation data, and selectively control the first leveling actuator and the second leveling actuator to (i) selectively reposition a first tractive element and a second tractive element relative to each other about a longitudinal axis defined by the lift device and (ii) selectively reposition the first tractive element and the second tractive element about a first lateral axis defined by the lift device.
ADJUSTABLE TRACKS
A vehicle having two configurations. The vehicle has two track frames, one on each side of a vehicle frame. The position of the track frames is adjustable relative to the vehicle frame by removing a connector, such as a first bolt, from a hole in the vehicle frame and a plate extending from the track frame. Another bolt is disposed in the vehicle frame and a slot in the plate. The track frame may be moved inwardly or outwardly to change the vehicle's configuration, and the first bolt reattached through the plate at a different hole in the vehicle frame.
Relative velocity based actuator velocity calibration system
A milling machine has a frame, ground engaging tracks that support the frame, a first actuator connecting the frame to a first track of the ground engaging tracks and a second actuator connecting the frame to a second track from the ground engaging tracks. The milling machine has an orientation sensor that determines an orientation of the frame. The milling machine has a controller that operates the first and second actuators to raise or lower the frame. The controller determines the frame orientation using the orientation sensor. The controller also determines a velocity error between actuator velocities of the first and second actuators based on the frame orientation and a target orientation of the frame. The controller determines a control parameter for the second actuator based on the velocity error and operates the second actuator using the determined control parameter.
TRACK ASSEMBLY FOR POWER MACHINE
A power machine configured as a mini-loader includes a mini-loader frame defining a front end opposite a rear end and a first side opposite a second side, at least one first-side motor supported by the first side of the frame, at least one second-side motor supported by the second side of the frame, and four endless track pods. The four endless track pods include a first endless track pod and a second endless track pod supported by the first side of the frame, and a third endless track pod and a fourth endless track pod supported by the second side of the frame. The endless tracks of the first and second endless track pods are powered by the at least one first-side motor and the endless tracks of the third and fourth endless track pods are powered by the at least one second-side motor to propel the power machine.