Patent ID: 11970869
Assignee: ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO., LTD
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 6:
7. The pump truck boom control system according to claim 5, wherein a process of determining, by the determining unit, the working condition of the boom, according to the pumping state signal, the first arm on site state signal and the timing signal for the action enabling signals corresponding to the each arm in the second-type arms comprises:
determining that the boom is in the opening placing boom working condition after the pump truck reaches a new construction position, when the pumping state signal indicates that the pump truck is not in a pumping state, the first arm on site signal indicates that the boom changes from a fully folded state to a non-fully folded state, and accumulated unfolding time, determined by the timing signal, of the second-type arms is smaller than first preset time; or
determining that the boom is in the folding placing boom working condition before the pump truck transfers, when the pumping state signal indicates that the pump truck is in a reverse pumping state, the number of reverse pumping times is greater than a preset number of times, and accumulated folding time, determined by the timing signal, of the second-type arms is greater than second preset time,
wherein, the first preset time is a product of the time taken by the second-type arms to be fully unfolded and a first preset coefficient, the second preset time is a product of the time taken by the second-type arms to be fully folded and a second preset coefficient, and both the first preset coefficient and the second preset coefficient are smaller than 1.