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

Abstract

The invention discloses a pumping stroke control method of a double-cylinder pump. The pumping stroke control method of the double-cylinder pump comprises the following steps. Firstly, work load pressure of the double-cylinder pump is detected and obtained in the working process of the double-cylinder pump. Secondly, a target pumping stroke corresponding to the work load pressure is confirmed according to the work load pressure of the double-cylinder pump. Thirdly, an actual pumping stroke (L) of the double-cylinder pump is adjusted to the target pumping stroke by adjusting volume of hydraulic oil contained in a communication cavity (5) of the double-cylinder pump. In addition, the invention further provides a pumping device. According to the pumping stroke control method of the double-cylinder pump and the pumping device, the pumping stroke of the double-cylinder pump can be adjusted in an adapted mode according to work load pressure directly relevant to a pumping working station of the double-cylinder pump, the phenomenon of insufficient material suction of a material conveying cylinder is effectively avoided, pumping material suction efficiency is improved, and energy is saved. The pumping device is simple in structure, convenient 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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