Sany Heavy Industry has released its new "Smart-Pump" adaptive control system for the 56-meter and 62-meter truck-mounted concrete pumps. In high-rise pumping, the pressure loss in the delivery pipe changes constantly with the height and the viscosity of the concrete. Traditional pumps operate at a fixed engine speed, leading to excessive pressure surges when the concrete flow is smooth, risking pipe bursts or boom shaking.
The Smart-Pump system uses a "Pressure-Derivative Sensor" at the pump outlet. This sensor detects the rate of pressure change. If the pressure rises rapidly (indicating a blockage or high viscosity), the system instantly signals the engine ECU to reduce the throttle and the main pump displacement, smoothing the flow. Conversely, if the pressure drops, the system increases the pumping speed.
A key innovation is the "Active Boom Stabilizer." When pumping at high flow rates, the concrete pulses through the boom pipes, causing the boom to oscillate violently (the "whip" effect). Sany's system integrates "Gyroscopic Sensors" on each boom section. A dedicated electronic-hydraulic valve block controls the boom cylinders. When the sensors detect a lateral oscillation, the system applies a counter-movement to the boom cylinders, actively dampening the vibration. This allows the operator to position the end hose precisely on the pouring point without fighting the boom movement. Furthermore, the system includes a "Pipe-Wear Predictor." By counting the number of pumping strokes and integrating the pressure data, the system calculates the wear life of the delivery pipes and prompts the user to replace them before a burst occurs.
