Concrete transfer pump energy-saving control method

Abstract

The invention discloses an energy-saving control method for concrete transportation pump, according to the status request of the construction site, and the matching relation of load pressure PL and the engine power in central control unit, the rotating speed ne of engine and the oil pump current I are calculated preliminarily, the control signal of engine speed ne is send to the chassis engine of concrete transportation pump through central control unit, the rotating speed is adjusted in closed-loop according the current speed feedback from chassis engine to make the current speed n is same with the set rotating speed ne; the chassis engine transmits the power to oil pump through the transmission mechanism (transfer case), the control of current I in oil pump is completed by: the central control unit sends signals to oil pump directly, the oil pump transmits the power of chassis engine to the hydraulic pressure system to realize the control of concrete transportation pump working process. The invention can adjust the engine rotating speed timely and the control mode of oil pump displacement according the requirements of actual working condition to adapt various power occasions, reduce fuel consumption and improve the operating efficiency.

Description

technical field [0001] The invention mainly relates to the control field of engineering machinery, in particular to an energy-saving control method of a concrete conveying pump. Background technique [0002] In the prior art, when the concrete delivery pump is pumping, the effective output power of the engine is output to the hydraulic system by the hydraulic pump. During the working process, the conventional control mode is to set the engine to work at the rated speed, so that the engine can work in the area with high fuel consumption rate while ensuring the torque and power output, and not in the economical operation area, causing the chassis The economic performance of the power system decreases and the mechanical loss increases. [0003] In heavy-load conditions, the diesel engine and oil pump work at full load, basically without power loss; but in medium-load or light-load conditions, the output power of the diesel engine and oil pump will be much higher than the power...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to solve the problem of high fuel consumption of the existing concrete delivery pump diesel engine, the present invention provides a simple operation, high degree of automation, which can adjust the engine speed and oil pump discharge in real time according to the requirements of actual working conditions. Quantity control mode to adapt to various power occasions, greatly reduce fuel consumption, thereby improving the overall efficiency of the concrete pump energy-saving control method

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