Concrete conveying pipe and manufacturing method thereof, and concrete pump truck

A technology for concrete delivery pipes and manufacturing methods, which is applied to pipes, rigid pipes, flange connections, etc., and can solve the problems of high cost and low service life

Active Publication Date: 2014-12-17
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to provide a concrete delivery pipe and its manufacturing method, and a concrete

Method used

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  • Concrete conveying pipe and manufacturing method thereof, and concrete pump truck
  • Concrete conveying pipe and manufacturing method thereof, and concrete pump truck
  • Concrete conveying pipe and manufacturing method thereof, and concrete pump truck

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Embodiment Construction

[0027] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in a variety of different ways defined and covered by the claims.

[0028] See image 3 with Figure 4 As shown, according to an embodiment of the present invention, a method for manufacturing a concrete delivery pipe is provided. The method sequentially includes a blanking step, a single and double-layer pipe welding step, a quenching step, and a flange welding step. First carry out the blanking step. In the blanking step, the single-layer pipe 30 and the double-layer pipe 40 are cut into predetermined lengths according to actual working conditions. In order to enable the concrete delivery pipeline of this embodiment to meet the harsh working conditions, this The single-layer pipe 30 in the embodiment is a hardenable pipe, such as alloy steel pipe; similarly, the inner pipe layer of the double-layer pipe 40 i...

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Abstract

The invention provides a concrete conveying pipe and a manufacturing method thereof, and a concrete pump truck. The manufacturing method of the concrete conveying pipe comprises the steps of blanking: cutting a single-layer pipe and a double-layer pipe which have preset lengths, wherein the single-layer pipe is a quenchable pipe; an inner pipe layer of the double-layer pipe is a quenchable layer, and an outer pipe layer of the double-layer pipe is a carbon steel layer; single-layer pipe and double-layer pipe welding: welding the single-layer pipe and the double-layer pipe through butting to form an integrated pipe, wherein at least one end of the integrated pipe is the double-layer pipe; quenching: quenching the inner wall of the integrated pipe. According to the manufacturing method of the concrete conveying pipe, the concrete conveying pipe which is long in service life and high in stability can be manufactured.

Description

Technical field [0001] The invention relates to the technical field of concrete transportation equipment, and more specifically, to a concrete conveying pipe, a manufacturing method thereof, and a concrete pump truck. Background technique [0002] Because of its harsh working environment, concrete delivery pipes must have good wear resistance and meet certain pressure requirements. The selection of materials, reasonable technology and the design of pipe fittings structure have become the three main factors affecting the life of concrete delivery pipes. Usually, the inner wall of alloy steel is quenched to increase the hardness to achieve the effect of improving the life. [0003] In the prior art, the straight pipe part of the concrete pump truck can be divided into two categories: "single-layer straight pipe" and "double-layer straight pipe" in terms of structure: [0004] figure 1 The structure of a single-layer straight pipe is shown. In the single-layer straight pipe, the inner...

Claims

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Application Information

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IPC IPC(8): B23P15/00C21D9/08C21D1/18
CPCB21C37/154C21D1/18C21D9/085F16L9/02F16L23/026
Inventor 向小辉
Owner ZOOMLION HEAVY IND CO LTD
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