Electro-hydraulic auxiliary mode control
First Claim
Patent Images
1. A method of operating a work machine, the work machine comprising an auxiliary electro-hydraulic circuit for operating a hydraulic actuator of an auxiliary tool when the auxiliary tool is attached to the work machine, the method comprising:
- selecting between a proportional mode and a continuous mode to obtain a selected mode, andelectrically operating the auxiliary electro-hydraulic circuit in the selected mode in response to operation of an auxiliary input device such that, in the proportional mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is proportional to the displacement of the auxiliary input device, and, in the continuous mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is substantially constant whenever flow is outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool in the continuous mode, wherein;
the selecting comprises receiving a selected-mode signal representative of the selected mode, and at least one control signal representative of the displacement of the auxiliary input device, determining which of the proportional mode or the continuous mode is selected based on the selected-mode signal, and toggling between the proportional mode and the continuous mode in response to successive actuation of the auxiliary mode selector, andthe operating comprises operating the auxiliary electro-hydraulic circuit in the selected mode in response to the at least one control signal.
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Abstract
A work machine (10) comprises an auxiliary electro-hydraulic circuit (22) adapted to operate a hydraulic actuator (16) of an auxiliary tool (12) when the auxiliary tool (12) is attached to the work machine. The auxiliary electro-hydraulic circuit (22) is electrically controlled by a controller unit (24) in a proportional mode or a continuous mode.
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Citations
24 Claims
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1. A method of operating a work machine, the work machine comprising an auxiliary electro-hydraulic circuit for operating a hydraulic actuator of an auxiliary tool when the auxiliary tool is attached to the work machine, the method comprising:
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selecting between a proportional mode and a continuous mode to obtain a selected mode, and electrically operating the auxiliary electro-hydraulic circuit in the selected mode in response to operation of an auxiliary input device such that, in the proportional mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is proportional to the displacement of the auxiliary input device, and, in the continuous mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is substantially constant whenever flow is outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool in the continuous mode, wherein; the selecting comprises receiving a selected-mode signal representative of the selected mode, and at least one control signal representative of the displacement of the auxiliary input device, determining which of the proportional mode or the continuous mode is selected based on the selected-mode signal, and toggling between the proportional mode and the continuous mode in response to successive actuation of the auxiliary mode selector, and the operating comprises operating the auxiliary electro-hydraulic circuit in the selected mode in response to the at least one control signal.
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2. A method of operating a work machine, the work machine comprising an auxiliary electro-hydraulic circuit for operating a hydraulic actuator of an auxiliary tool when the auxiliary tool is attached to the work machine, the method comprising:
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selecting between a proportional mode and a continuous mode to obtain a selected mode, and electrically operating the auxiliary electro-hydraulic circuit in the selected mode in response to operation of an auxiliary input device such that, in the proportional mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is proportional to the displacement of the auxiliary input device, and, in the continuous mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is substantially constant whenever flow is outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool in the continuous mode, wherein, in the continuous mode, the operating comprises triggering commencement of flow at the constant magnitude in response to a first predetermined displacement of the auxiliary input device relative to a neutral position. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of operating a work machine, the work machine comprising an auxiliary electro-hydraulic circuit for operating a hydraulic actuator of an auxiliary tool when the auxiliary tool is attached to the work machine, the method comprising:
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selecting between a proportional mode and a continuous mode to obtain a selected mode, electrically operating the auxiliary electro-hydraulic circuit in the selected mode in response to operation of an auxiliary input device such that, in the proportional mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is proportional to the displacement of the auxiliary input device, and, in the continuous mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is substantially constant whenever flow is outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool in the continuous mode, and receiving an operator-selected flow setpoint representative of the constant magnitude, and storing that operated-selected flow setpoint in a memory unit, wherein the operating comprises operating the auxiliary electro-hydraulic circuit in the continuous mode so as to output flow from the auxiliary electro-hydraulic circuit to the auxiliary tool at the operated-selected flow setpoint.
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13. A work machine, comprising:
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an auxiliary input device, an auxiliary mode selector for selecting between a proportional mode and a continuous mode to obtain a selected mode, an auxiliary electro-hydraulic circuit adapted to operate a hydraulic actuator of an auxiliary tool when the auxiliary tool is attached to the work machine, and a controller unit that communicates with the auxiliary input device, the auxiliary mode selector, and the auxiliary electro-hydraulic circuit, the controller unit adapted to electrically operate the auxiliary electro-hydraulic circuit in the selected mode in response to operation of the auxiliary input device such that, in the proportional mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is proportional to the displacement of the auxiliary input device, and, in the continuous mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is substantially constant whenever flow is outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool in the continuous mode, wherein the auxiliary mode selector is configured to toggle between the proportional mode and the continuous mode in response to successive actuation of the auxiliary mode selector.
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14. A work machine, comprising:
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an auxiliary input device, an auxiliary mode selector for selecting between a proportional mode and a continuous mode to obtain a selected mode, an auxiliary electro-hydraulic circuit adapted to operate a hydraulic actuator of an auxiliary tool when the auxiliary tool is attached to the work machine, and a controller unit that communicates with the auxiliary input device, the auxiliary mode selector, and the auxiliary electro-hydraulic circuit, the controller unit adapted to electrically operate the auxiliary electro-hydraulic circuit in the selected mode in response to operation of the auxiliary input device such that, in the proportional mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is proportional to the displacement of the auxiliary input device, and, in the continuous mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is substantially constant whenever flow is outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool in the continuous mode, wherein, in the continuous mode, the controller unit is adapted to trigger commencement of flow at the constant magnitude in response to a first predetermined displacement of the auxiliary input device from a neutral position. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A work machine, comprising:
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an auxiliary input device, an auxiliary mode selector for selecting between a proportional mode and a continuous mode to obtain a selected mode, an auxiliary electro-hydraulic circuit adapted to operate a hydraulic actuator of an auxiliary tool when the auxiliary tool is attached to the work machine, a controller unit that communicates with the auxiliary input device, the auxiliary mode selector, and the auxiliary electro-hydraulic circuit, the controller unit adapted to electrically operate the auxiliary electro-hydraulic circuit in the selected mode in response to operation of the auxiliary input device such that, in the proportional mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is proportional to the displacement of the auxiliary input device, and, in the continuous mode, the magnitude of flow outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool is substantially constant whenever flow is outputted from the auxiliary electro-hydraulic circuit to the auxiliary tool in the continuous mode, and an operator interface configured to receive an operator-selected flow setpoint representative of the constant magnitude, and a memory unit for storing that operator-selected flow setpoint, wherein the controller unit is adapted to electrically operate the auxiliary electro-hydraulic circuit in the continuous mode as to as to output flow from the auxiliary electro-hydraulic circuit to the auxiliary tool at the operator-selected flow setpoint.
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Specification