Oshkosh Corporation

JiHong Hao

Ignacy Puszkiewicz

Prabhu Shankar

David Lombardo

Louis Bafile

Eko Prasetiawan

Scott Riley

Gregory S Brulo

Janine Borofka

Peter Tan

Devin J Rosencrance

Brendan Kotlanger

Paul Acuri

Derek Williams

Paul Arcuri

A lift device includes a base, a retractable lift assembly, a coupler, an electro-mechanical device, and a battery pack. The base includes an electric drive and at least two rotatable wheels powered by the electric drive. The retractable lift assembly includes a first end coupled to the base and a second end that is movable relative to the base. The coupler is mounted to a first surface of the retractable lift assembly and includes at least one mounting stud, the at least one mounting stud extending outwardly away from the coupler. The electro-mechanical device is detachably coupled to the at least one mounting stud and is repositionable relative to the retractable lift assembly. The battery pack is electrically connected to the electric drive and the retractable lift assembly.

Mobility base

A fully electric lift device includes a base assembly, a lift assembly, a platform assembly, tractive elements, an energy storage device, and a control system. The lift assembly is coupled with the base assembly and is driven by an electric linear actuator for a lifting function. The platform assembly is positioned at a top of the lift assembly and can be raised or lowered as the lift assembly performs the lifting function. The tractive elements are rotatably coupled with the base assembly and can be driven by an electric wheel motor to perform a driving function. The control system includes a controller that operates the electric wheel motor and the electric linear actuator to perform the driving function and the lifting function using power drawn from the energy storage device. The lift assembly and the tractive elements use only electrical energy to perform the lifting and driving functions.

Electric boom

A steering system includes a first wheel and a second wheel laterally spaced apart from the first wheel, and a third wheel and a fourth wheel laterally spaced apart from the third wheel. The first wheel is rotatably coupled to a first knuckle and the second wheel is rotatably coupled to a second knuckle. The third wheel and the fourth wheel are both pivotally fixed in a forward-aligned orientation. The steering system includes a first tie rod having a first end pivotally coupled to the first knuckle and a second end pivotally coupled to a mechanical linkage, a second tie rod having a first end pivotally coupled to the second knuckle and a second end pivotally coupled to the mechanical linkage, and an electrical actuator coupled to the mechanical linkage. The mechanical linkage is arranged in front of the electrical actuator relative to a travel direction.

Lift steering systems and methods

A boom lift includes a base having a first end and an opposing second end, a turntable coupled to the base, a boom coupled to the turntable, an assembly pivotably coupled to the first end of the base, and a first actuator coupled to the first end of the base and the assembly. The assembly includes a tractive element. The assembly extends from the base such that the tractive element is longitudinally offset from and spaced forward of the first end and the opposing second end of the base.

Leveling system for lift device

A machine includes a chassis, a turntable coupled to the chassis, a boom coupled to the turntable, an axle, a first actuator, and a second actuator. The chassis has a first end and an opposing second end, and defines a longitudinal center axis. The turntable is selectively rotatable about a rotation axis. The axle is pivotally coupled to the first end of the chassis and configured to pivot about the longitudinal center axis. The first actuator is coupled to the first end of the chassis and positioned on a first side of the longitudinal center axis. The first actuator is extendable to selectively engage a first contact point on the axle. The second actuator is coupled to the first end of the chassis and positioned on an opposing second side of the longitudinal center axis. The second actuator is extendable to selectively engage a second contact point on the axle.

Oscillating axle for lift device

A lift device includes a base including at least two rotatable wheels, a retractable lift assembly, and a coupler. The retractable lift assembly includes a first end coupled to the base and a second end that is movable relative to the base. The coupler is attached to the retractable lift assembly a distance from the first end and is configured to detachably couple the retractable lift assembly to an electro-mechanical device. The coupler includes a first flange, a second flange, a pair of diametrically opposed mounting studs, and a pin. Each one of the pair of mounting studs extends from a respective one of the first flange and the second flange. The pin extends through at least one of the first flange or the second flange below the pair of mounting studs.

A lift machine includes a base having a first end and a second end, a first assembly, and a second assembly. The first end has first and second pivot points defining a first lateral axis. The second end has third and fourth pivot points defining a second lateral axis. The first assembly is pivotably coupled to the first and second pivot points. The first assembly extends away from the base in a first direction such that first and second tractive elements are longitudinally offset from the first lateral axis and spaced from the first end of the base. The second assembly is pivotably coupled to the third and fourth pivot points. The second assembly extends away from the base in a second direction such that third and fourth tractive elements are longitudinally offset from the second lateral axis and spaced from the second end of the base.

A machine includes a chassis having a first end and an opposing second end, an axle pivotally coupled to the first end of the chassis, a first actuator coupled to the first end of the chassis, and a second actuator coupled to the first end of the chassis. The chassis defines a longitudinal center axis. The axle is configured to rotate about the longitudinal center axis. The first actuator is positioned on a first lateral side of the longitudinal center axis. The first actuator is extendable to selectively engage a first contact point on the axle. The second actuator is positioned on an opposing second lateral side of the longitudinal center axis. The second actuator is extendable to selectively engage a second contact point on the axle.

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.

A lift device includes a chassis having a first end and an opposing second end, a first actuator coupled to the first end, a second actuator coupled to the first end, a third actuator coupled to the opposing second end; and a fourth actuator coupled to the opposing second end. The first actuator and the second actuator are selectively engageable to facilitate providing active control of a first pitch adjustment and a first roll adjustment of the first end of the chassis. The third actuator and the fourth actuator are (i) selectively fluidly couplable to facilitate providing passive control of a second pitch adjustment and a second roll adjustment of the opposing second end of the chassis and (ii) selectively fluidly decouplable to facilitate providing active control of the second pitch adjustment and the second roll adjustment of the opposing second end of the chassis.

A lift device includes a base, a retractable lift mechanism, a work platform, and a lift controller. The retractable lift mechanism is moveable between an extended position and a retracted position. The work platform is configured to support a load and is coupled to and supported by the retractable lift mechanism. The linear actuator is configured to selectively move the retractable lift mechanism between the extended position and the retracted position. The linear actuator has an electric motor and an electromagnetic brake. The lift controller is in communication with the linear actuator and is configured to determine the load supported by the work platform based on the actuator force applied to the work platform and the height of the work platform.

Scissor lift load sensing systems and methods

A lift device includes a chassis having a first end and an opposing second end, a first actuator coupled to the first end of the chassis, a second actuator coupled to the first end of the chassis, a third actuator coupled to the opposing second end of the chassis, a fourth actuator coupled to the opposing second end of the chassis, and a control system. The control system is configured to fluidly couple at least two of the first actuator, the second actuator, the third actuator, and the fourth actuator, and fluidly decouple and actively control the at least two of the first actuator, the second actuator, the third actuator, and the fourth actuator.

A lift device includes a chassis, a rear leveling assembly coupled to a rear end of the chassis, and a front leveling assembly coupled to a front end of the chassis. The rear leveling assembly includes a first rear actuator and a second rear actuator. The first rear actuator and the second rear actuator are selectively engageable to facilitate providing active control of a rear pitch adjustment and a rear roll adjustment of the rear leveling assembly. The front leveling assembly includes a first front actuator and a second front actuator. The first front actuator and the second front actuator are (i) selectively fluidly couplable to facilitate providing passive control of a front pitch adjustment and a front roll adjustment of the front leveling assembly and (ii) selectively fluidly decouplable to facilitate providing active control of the front pitch adjustment and the front roll adjustment of the front leveling assembly.

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Greencastle, PA, United States of America

JiHong Hao