Pumping stroke control method of double-cylinder pump and pumping device

Abstract

A pump stroke control method for twin-cylinder pump, comprising the following steps: first, while a twin-cylinder pump is in operating mode, detecting and obtaining the operating load pressure of same; second, determining, according to said operating load pressure, a target pump stroke corresponding to said operating load pressure; third, by means of adjusting the volume of hydraulic oil in a through-cavity (5 ) of the twin-cylinder pump, adjusting the actual pump stroke (L) of said pump to said target pump stroke. Also provided is a pumping device. On the basis of the operating load pressure directly relating to the operating circumstances of a twin-cylinder pump, the present method adaptively adjusts the pump stroke of said pump, thus allowing the materials-conveying cylinder effectively to avoid a situation of insufficient materials uptake, and thereby increasing pump uptake efficiency while saving energy. The pumping device is structurally simple, easy to operate and low in cost.

Description

technical field [0001] The invention relates to a pumping control method, in particular to a pumping stroke control method of a double cylinder pump. In addition, the present invention also relates to a pumping device applying the pumping stroke control method. Background technique [0002] Mud, concrete, mortar and other materials are commonly used building materials in the field of engineering and construction. Double-cylinder pumps such as concrete pumps (also known as "concrete delivery pumps" or "concrete pumping devices") are widely used in engineering construction. The construction machinery used, the main structure of this kind of double cylinder pump is similar to that of commonly used concrete pumps. It mainly uses pressure to continuously transport fluid materials along the pipeline. Generally, the hydraulic pump can be driven by an electric motor (or internal combustion engine) to form a hydraulic pump with a certain pressure. Oil, driving the main oil cylinder ...

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Problems solved by technology

However, this control method is only to optimize the overall working performance of the concrete pump, and the control is complicated, and it is not targeted at the problem of insufficient suction of the concrete delivery cylinder due to different concrete material conditions, which leads to a decrease in pumping efficiency

[0007] It can be seen from the above description that the main disadvantage of the concrete pump in the prior art is that when the concrete pump pumps fluid concrete with different material parameters, under some working conditions, the concrete delivery cylinder may not absorb enough material, but the concrete There is no corresponding detection device for concrete pumping conditions in the pump, and the automatic detection function of working conditions cannot be realized. The main oil cylinder and concrete delivery cylinder still operate according to one or two fixed strokes, resulting in low concrete pumping efficiency. The waste of energy is large, so that except for a few specific concrete working conditions, the pumping and suction efficiency is better, and other working conditions are in a working state with reduced pumping efficiency

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