Lift control apparatus for ground work apparatus
First Claim
1. A lift control apparatus for a ground work apparatus of a traveling work vehicle, comprising:
- a height sensor configured to generate a height detection signal indicative of an actual height position of the ground work apparatus;
an input operation device configured to accept an input of an upper limit position setting from an operator for the ground work apparatus;
an upper limit manager configured to set the upper limit position of the ground work apparatus based on an operation input signal from the input operation device; and
a setting prohibitor configured to set the upper limit position as the actual height position of the ground work apparatus, under a certain condition;
the setting prohibitor being further configured to determine that the certain condition occurs when the upper limit position being set based on the operation input signal is lower than the actual height position of the ground work apparatus, as detected by the height sensor.
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Accused Products
Abstract
A lift control apparatus includes a height sensor that outputs a height detection signal after a height of a ground work apparatus is detected. The ground work apparatus is coupled to a traveling work vehicle via a lift mechanism. An upper limit manager sets an upper limit position of the ground work apparatus based on an operation input signal from an input operation device for an upper limit setting USD. A setting prohibitor prohibits, when the upper limit position being set by the operation input signal is lower than the height of the ground work apparatus based on the height detection signal, the setting of the upper limit position from the operation input signal, and setting the upper limit position to the height of the ground work apparatus based on the height detection signal.
11 Citations
19 Claims
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1. A lift control apparatus for a ground work apparatus of a traveling work vehicle, comprising:
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a height sensor configured to generate a height detection signal indicative of an actual height position of the ground work apparatus; an input operation device configured to accept an input of an upper limit position setting from an operator for the ground work apparatus; an upper limit manager configured to set the upper limit position of the ground work apparatus based on an operation input signal from the input operation device; and a setting prohibitor configured to set the upper limit position as the actual height position of the ground work apparatus, under a certain condition; the setting prohibitor being further configured to determine that the certain condition occurs when the upper limit position being set based on the operation input signal is lower than the actual height position of the ground work apparatus, as detected by the height sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A lift control apparatus for a ground work apparatus of a traveling work vehicle, comprising:
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a height sensor configured to generate a height detection signal indicative of an actual height position of the ground work apparatus in relation to a ground surface; an input operation device configured to accept an input of an upper limit position setting from an operator of the ground work apparatus; an upper limit manager configured to each of; allow the operator to change the upper limit position setting to the actual height position of the ground work apparatus via the input operation device under a first condition; and prohibit the operator from changing the upper limit position via the input operation device under a second condition; wherein the first condition occurs when the upper limit position setting is higher than the actual height position of the ground work apparatus, as detected by the height sensor; and wherein the second condition occurs when the upper limit position setting is lower than the actual height position of the ground work apparatus, as detected by the height sensor.
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19. A lift control apparatus for a ground work apparatus of a traveling work vehicle, comprising:
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a height sensor configured to generate a height detection signal indicative of an actual height position of the ground work apparatus in relation to a ground surface; a touch screen display configured to allow an operator to change an upper limit position setting and being configured to display the actual height position of the ground work apparatus, as detected by the height sensor; an upper limit manager configured to each of; allow the operator to change the upper limit position setting to the actual height position of the ground work apparatus via the touch screen display under a first condition; and prohibit the operator from changing the upper limit position via the tough screen display under a second condition; wherein the first condition occurs when the upper limit position setting is higher than the actual height position of the ground work apparatus, as detected by the height sensor; and wherein the second condition occurs when the upper limit position setting is lower than the actual height position of the ground work apparatus, as detected by the height sensor.
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Specification