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Vertical lift loader arms for compact utility loader
11549232 · 2023-01-10 · ·

A compact utility loader compact utility loader comprising a frame, and a loader arm configured to support an attachment. The compact utility loader additionally comprises a first link pivotably secured to the frame, a second link pivotably secured to the frame, and an actuator configured to raise and lower the loader arm. The actuator is not simultaneously secured to both the frame and the loader arm.

Compact utility loader

A compact utility loader compact utility loader comprising a frame including a lower portion and an upper portion. A width of the lower portion is smaller than a width of the upper portion. The compact utility loader additionally comprises a first track and a second track, with each track being positioned on a side of the frame. Each of the tracks has a width of at least 7.5 inches, and the compact utility loader has an overall width of no more than 36 inches.

Integrated multi-connection hydraulic group
20220403858 · 2022-12-22 ·

An integrated multi-connection hydraulic group for connecting the hydraulic circuit on-board an operating machine to a plurality of hydraulic, electrical, and/or pneumatic lines for the connection of corresponding lines of a user includes a block or manifold having connection elements for connecting the block to the circuit of the machine, and a plurality of fast female couplings housed in the block that face outwardly from a plate-shaped surface of the block and connect with a corresponding number of male couplings of the user. A plurality of hydraulic elements is provided within the block or manifold for adjusting the flow that feeds the lines and is in fluid connection with the fast female couplings via respective channels defined inside the block.

Integrated multi-connection hydraulic group
20220403858 · 2022-12-22 ·

An integrated multi-connection hydraulic group for connecting the hydraulic circuit on-board an operating machine to a plurality of hydraulic, electrical, and/or pneumatic lines for the connection of corresponding lines of a user includes a block or manifold having connection elements for connecting the block to the circuit of the machine, and a plurality of fast female couplings housed in the block that face outwardly from a plate-shaped surface of the block and connect with a corresponding number of male couplings of the user. A plurality of hydraulic elements is provided within the block or manifold for adjusting the flow that feeds the lines and is in fluid connection with the fast female couplings via respective channels defined inside the block.

Loader frame

Power machine frames for power machines such as skid steer loaders that include features for aiding in the manufacture of the power machines, providing space saving advantages in the design of the power machine, and/or providing performance advantages for the power machine.

Stability control for hydraulic work machine
11525238 · 2022-12-13 · ·

A work machine includes a mechanical arm. A work implement is coupled to the mechanical arm to receive a load. A hydraulic actuator moves the arm between a lower position and an upper position, wherein a distance between the lower position and the upper position is a travel distance of the mechanical arm. A sensor unit is configured to sense the load in the work implement. A valve is in fluid communication with the hydraulic actuator for supplying a fluid output to the hydraulic actuator. A controller is in communication with the valve and the sensor unit. The controller is configured to transmit a control signal to the valve to adjust the fluid output to the hydraulic actuator. The controller is also configured to adjust the upper position to reduce the travel distance in response to the load being at or above a threshold value.

METHOD AND SYSTEMS FOR CONTROLLING ELECTRICALLY-POWERED HYDRAULIC CIRCUITS

One embodiment of a hydraulic system for a machine has a first hydraulic circuit including a first pump coupled to a first hydraulic actuator configured to move a first implement of the machine. A second hydraulic circuit includes a second pump coupled to a second hydraulic actuator configured to move a second implement. An electric motor mechanically couples to the first pump and to the second pump. An operator interface receives input from an operator requesting movement of the first and second implements. A controller communicatively coupled to the electric motor and to the operator interface determines, based on the requested movement of the first and second implements respectively, first and second flow allocations respectively for the first and second pumps and determines respective target displacements for the first and second pumps. The controller also determines first and second target electric motor speeds based on the target displacements for the first and second pumps, respectively, and controls the electric motor to operate at the larger of the first and second target electric motor speeds.

Systems and methods to improve work machine stability based on operating values
11512447 · 2022-11-29 · ·

A work machine includes systems and methods for stability control based on operating values. The work machine includes a control system having a sensor system with a load sensor, an arm position sensor, and an articulation angle sensor. A controller is in communication with the sensor system. The controller is configured to receive a movement command and to receive a set of values from the sensor system. The controller is configured to determine an operational window for normal operation of the work vehicle based on the received set of values, determine a movement limit based on the received set of values, and limit movement of a component beyond the movement limit.

SELF-LEVELING LIFT ARM ASSEMBLY FOR POWER MACHINES
20220372726 · 2022-11-24 ·

A lift arm assembly for a power machine can include a lift arm, an implement carrier, a lift cylinder that raises or lowers the lift arm, a leveling link, a tilt cylinder that causes the implement carrier to pivot relative to the lift arm, and an isolated hydraulic circuit. The isolated hydraulic circuit can include a follower cylinder that is mechanically synchronized with the lift cylinder, a leveling cylinder that can be pivotally secured to the leveling link and to the lift arm, a first conduit that can provide hydraulic flow between base ends of the follower and leveling cylinders, and a second conduit that can provide hydraulic flow between rod ends of the follower and leveling cylinders. Movement of the follower and leveling cylinders can be hydraulically synchronized by flow through the first and second conduits.

Wheel loader

A wheel loader configured to reduce the traveling distance required for a raise and run operation, and reduce fuel consumption includes: an engine 3; a torque converter 41; a forward and reverse switch 62; a stepping amount sensor 610; an operation amount sensor 73; and a controller 5. The controller 5 determines whether a specific condition for specifying an operation of the lift arm 21 in an upper direction during forward travel of the vehicle body, on the basis of a forward and reverse switching signal, the stepping amount on the accelerator pedal 61, and a pilot pressure Ti pertaining to the lifting operation amount for the lift arm 21. When the specific condition is satisfied, the vehicle speed is limited by reducing the maximum rotational speed of the engine 3 in response to increase in the pilot pressure Ti.