Simple single-pump double-circulation system of concrete pump

Abstract

The invention discloses a simple single-pump double-circulation system of a concrete pump. The simple single-pump double-circulation system comprises a power mechanism, a conveying mechanism and a control mechanism, wherein a main oil pump is arranged on the power mechanism; the main oil pump pushes a main oil cylinder in the conveying mechanism; the main oil cylinder is connected with a materialcylinder; the material cylinder is connected with an S valve to a hopper outlet conveying pipeline; the main oil cylinder is connected with a swinging oil cylinder through the control mechanism; the control mechanism comprises hydraulic logic valves, swing cylinder hydraulic control reversing valves, an electromagnetic valve, a hydraulic control valve, a load-sensitive feedback function and a manual reversing valve, wherein the hydraulic logic valves are arranged at the two ends of the main oil cylinder; the two swing cylinder hydraulic control reversing valves are connected with the hydrauliclogic valves, and one hydraulic control reversing valve is connected with the main oil cylinder; the electromagnetic valve is used for controlling positive pump and reverse pump; the hydraulic control valve is used for controlling the oil supply amount of the swinging oil cylinder; the main oil pump is provided with the load-sensitive feedback function; and the manual reversing valve is used foremergency reversing. According to the system, the control valve set is reasonably used for realizing stepless speed regulation of displacement, the structure is simple, the economical efficiency is high, the system can be applied to various kinds of products, and the universality of the system is high.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a simple concrete single-pump double-circulation system. Background technique [0002] Due to the continuous development of modern construction technology and the continuous improvement of people's living standards, construction projects now have high requirements for the quality and technology of concrete construction. Concrete pumping mechanisms play a pivotal role in modern construction. [0003] The pumping displacement of the pumping mechanism of the concrete single-pump dual-circulation system existing on the market cannot be adjusted in a wide range. If the selected pump has a small displacement, the swing cylinder will move slowly, which will cause the entire system to pulsate and hold pressure; if The larger the displacement of the pump, the faster the running speed of the pumping cylinder and the greater the impact will be, and the matching of the concrete...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the technical problem to be solved by the present invention is to provide a simple concrete single-pump double-circulation system. The simple concrete single-pump double-circulation system uses a hydraulic control valve group to solve the problem of the current single-pump double-circulation system pumping mechanism. The defect that the pumping displacement cannot be adjusted in a large range achieves the similar function of the double-pump and double-circuit system, simplifies the system structure, reduces the manufacturing cost and can reduce the failure rate

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