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Manner and device null in order depending on load, to change the liquid pressure type run Drive device of the self-propelled type constructive engineering works
Manner and device null in order depending on load, to change the liquid pressure type run Drive device of the self-propelled type constructive engineering works
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机译:方式和装置根据负荷为零,改变液压式运行自推进式建设工程的驱动装置
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摘要
(57) Abstract At least, one liquid pressure variable delivery pump and, it has with the liquid pressure travelling motor and the power-shift drive of one 2 step types which especially are controlled at least, this power-shift drive through that driven shaft, it drives the axis of the constructive engineering works machine, power-shift drive through 1 shift valves at least with pneumatics, liquid pressure or voltage, it is shifted, the liquid pressure travelling drive of the self-propelled type construction engineering works machine power shift as for method in order possibly to change, depending on load between the shift steps of power-shift drive, way it can shift securely and automatically, improvementIt is done. This, power-shift drive (1) depending on load, at least to 1 change elements (5) operates is connected in order to shift automatically, the switch (7) by operating and is in turn operated by the response liquid pressure which, 2 pressure switches (3,4), differs at least, depending on the laden state where the inside of the liquid pressure type travelling circuit is beforehand decided on the one hand or the other pressure switch (3,4) by the change element (5) is operated, is achieved this change element to shift power-shift drive the shift valve in order (1) (6) by operating electrically.
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