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Concrete delivery pipe and manufacturing method thereof, concrete pump truck

A technology of concrete conveying pipe and manufacturing method, which is applied in the direction of pipe, rigid pipe, flange connection, etc., can solve the problems of high cost and low service life, etc.

Active Publication Date: 2016-08-24
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a concrete delivery pipe and its manufacturing method, and a concrete pump truck to solve the problems of high cost and low service life of the concrete delivery pipe in the prior art

Method used

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  • Concrete delivery pipe and manufacturing method thereof, concrete pump truck
  • Concrete delivery pipe and manufacturing method thereof, concrete pump truck
  • Concrete delivery pipe and manufacturing method thereof, 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 many different ways defined and covered by the claims.

[0028] see image 3 and 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-layer pipe welding step, a quenching step and a flange welding step. First, the blanking step is carried out. 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 make the concrete delivery pipeline of this embodiment meet the requirements of harsh working conditions, this The single-layer pipe 30 in the embodiment is a hardenable pipe, such as an alloy steel pipe; similarly, the inner pipe layer of the double-layer pipe 4...

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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 delivery pipe, a manufacturing method thereof, and a concrete pump truck. Background technique [0002] Due to the harsh working environment of the concrete delivery pipe, the concrete delivery pipe must have good wear resistance and meet certain pressure requirements. The selection of materials, reasonable process and design of pipe fittings become the three main factors affecting the life of concrete conveying pipes. Quenching is usually used on the inner wall of alloy steel to increase the hardness to achieve the effect of improving life. [0003] In the existing technology, 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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