Concrete piston structure, pumping system and concrete pump

Abstract

The invention discloses a concrete piston structure, wherein the piston body (1) is provided with an axial hole (11) whose diameter is larger than that of a flange (21), and the orifice position of the axial hole (11) is set There is a limit end cover (3) connected to the piston body (1), the limit end cover (3) is provided with a diameter larger than the diameter of the connecting rod (22) and smaller than the flange (21 ) diameter end cap hole (31); the flange (21) is set in the axial hole (11), and the connecting rod (22) extends from the end cap hole (31) Out; there are also rolling parts between the flange (21) and the bottom wall of the axial hole (11). The concrete piston can adjust its position in the conveying cylinder by itself, thereby ensuring the coaxiality between the concrete piston and the conveying cylinder. In addition, the invention further discloses a pumping system comprising the concrete piston structure. Furthermore, the invention also discloses a concrete pump comprising the pumping system.

Description

technical field [0001] The invention relates to the technical field of concrete pumps, in particular to a concrete piston structure. In addition, the invention also relates to a pumping system comprising the concrete piston structure. Furthermore, the present invention also relates to a concrete pump comprising the pumping system. Background technique [0002] A concrete pump is a device that delivers concrete to the desired location in a construction project. The pumping system is the core component of the concrete pump. It converts the hydraulic energy into mechanical energy through the alternate action of pushing and pulling the oil cylinder, so that the concrete can overcome the resistance of the pipeline and be transported to the pouring site. [0003] Please refer to figure 1 with figure 2 , figure 1 It is a structural schematic diagram of a pumping system of a concrete pump in the prior art; figure 2 for figure 1 Schematic diagram of the concrete piston in th...

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Problems solved by technology

[0005] like figure 2 As shown, in the above pumping system, the concrete piston 4' includes components such as a piston body 4'1, a guide ring 4'2, a sealing body 4'3, a core cover 4'4, and a piston connecting rod 4'5; among them, Piston connecting rod 4'5 comprises flange plate 4'51 and connecting rod part 4'52, as figure 2 As shown, the flange 4'51 and the core cover 4'4 are fixedly connected by bolts, and the connecting rod 4'52 is also fixedly connected with the piston rod, so when the coaxiality deviation between the concrete piston 4' and the delivery cylinder 2' When it is too large, the center of the concrete piston 4' cannot be adjusted, which will cause partial wear of the concrete piston 4' in the delivery cylinder 2', seriously reducing the service life of the concrete piston 4' and reducing the reliability of the pumping system

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