Concrete pump

Abstract

The invention discloses a pumping system, which comprises a main oil cylinder (1), a conveying cylinder (2) and a water tank (3) positioned between the main oil cylinder (1) and the conveying cylinder (2). The main oil cylinder (1) is connected with the conveying cylinder (2) by a concrete piston (4). A plurality of pull rods (5) for fixing the water tank (3) pass through the water tank (3). At least one pull rod (5) is further fixedly connected with the main oil cylinder (1). Due to the structure design of the system, the connection strength between the main oil cylinder (1) and the water tank (3) can be obviously improved, so that the system meets the performance requirements of an extra high pressure concrete pump. Moreover, the invention also discloses a concrete pump, which comprises the pumping system.

Description

technical field [0001] The invention relates to the technical field of concrete pumps, in particular to a pumping system. Furthermore, the invention also relates to a concrete pump comprising the pumping system. Background technique [0002] A concrete pump is a device that transports concrete from the location of the concrete pump to the location required for the construction project on the construction site. 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 and 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 main cylinder of the pumping system. [0004] Such as figure 1 As shown,...

AI Technical Summary

Problems solved by technology

[0006] However, the connection structure of the above-mentioned main oil cylinder 1' and the water tank 3' is only applicable to the pumping system of ordinary pressure or general high-pressure concrete pumps. If the main oil cylinder 1' and the water tank 3' still adopt the existing connection structure, the following technical problems will occur:

[0007] In the ultra-high pressure concrete pump, due to the increase of the pumping pressure, in order to ensure the strength and working reliability, the diameter of the connecting bolts fixing the main oil cylinder 1′ and the water tank 3′ needs to be increased, and the pre-tightening torque is increased at the same time, but it is affected by the water tank. Due to the limitation of the internal space of 3', the diameter of the connecting bolts is limited; in addition, the connecting bolts at the bottom of the water tank 3' cannot guarantee the pre-tightening torque of the bolts because there is not enough space for a wrench

Due to the limited increase in the diameter of the bolts and the inability to guarantee the pre-tightening torque of the bolts at the bottom of the water tank 3', the connection between the main oil cylinder 1' and the water tank 3' is unreliable and loose. Therefore, when the ultra-high pressure concrete pump pumps concrete, The joint surface of the main oil cylinder 1' and the water tank 3' will have water leakage, opening and closing and other failures, which will cause the entire pumping system to be unstable, unable to pump high pressure, and fail to reach the performance of the ultra-high pressure pump

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