A kind of S pipe and its manufacturing method, concrete pumping equipment

Abstract

The invention provides an S pipe used for a concrete pumping device. The S pipe comprises an outer pipe layer and an inner pipe layer. The inner pipe layer is arranged in the outer pipe layer. The outer pipe layer comprises a first arc plate and a second arc plate which are fixedly connected. The inner pipe layer comprises a third arc plate and a fourth arc plate which are of an integrated structure. The second arc plate and the fourth arc plate are of an integrated structure. The thickness ratio range value of the first arc plate and the third arc plate or the second arc plate and the fourth arc plate is 1:3-3:1. In addition, a manufacturing method of the S pipe is further provided. According to the S pipe of the structure, the overlaying process is omitted, the inner wall of the inner pipe layer is smooth, the flowing channel resistance is small, the production efficiency is high, and the use cost is low. The concrete pumping device comprising the S pipe is further provided.

Description

technical field [0001] The invention relates to the field of pumping machinery, in particular to an S pipe, a manufacturing method thereof, and concrete pumping equipment. Background technique [0002] Concrete pump trucks and tow pumps in concrete pumping equipment have become important concrete conveying equipment in the construction of high-rise buildings due to their advantages of flexibility, convenience, and high efficiency. Concrete pumping equipment transports concrete to high-rise buildings through delivery pipes , because the delivery pipe needs to withstand the high pressure and the erosion of concrete, so the delivery pipe is a more important part of the concrete pumping equipment. [0003] The S pipe in the conveying pipe plays a particularly critical role and can directly affect the service life and stability of the concrete pumping equipment. It is located in the hopper and connects the conveying cylinder and the conveying pipe respectively. In terms of shape,...

AI Technical Summary

Problems solved by technology

[0006] (1) The inner wall of the S pipe obtained by surfacing is rough, the concrete flow resistance is large, the inner wall is more prone to wear, and it is easy to cause pipe blockage;

[0007] (2) The quality of surfacing welding is difficult to control, and defects such as welding bumps and transverse welding cracks are unavoidable, which affects the service life;

[0008] (3) The controllability of the surfacing welding process is poor, the welding operation is difficult to quantify, it is easy to cause changes in the chemical composition and performance of the surfacing alloy, and it is difficult to ensure the thickness and uniformity of the welding layer;

[0009] (4) The material is preheated before surfacing, and annealing is required after surfacing to relieve stress, the process is complicated and the production efficiency is low;

[0010] (5) The hardness after surfacing is as high as 60HRC. In the case of ensuring the service life, because the surfacing process uses a large amount of wear-resistant alloy materials, its manufacturing cost will be relatively high

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