A kind of concrete conveying pipe and its preparation method
A technology for a concrete conveying pipe and an outer pipe, which is applied in the field of concrete conveying pipe and its preparation, can solve the problems of being easily corroded, unable to achieve wear resistance, easy to break or crack, and achieve good wear resistance and corrosion resistance. , the effect of slowing down wear and corrosion, and improving service life
Active Publication Date: 2015-08-05
ZOOMLION HEAVY IND CO LTD
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Problems solved by technology
At the same time, because the metal material is easily corroded, the corrosion resistance of the single-layer concrete delivery pipe is poor
While improving the wear resistance of the inner wall of the single-layer concrete pipe, it will reduce the overall toughness of the pipe, making the pipe easy to break or crack. Therefore, under the condition of both toughness and wear resistance, the single-layer concrete pipe cannot achieve better performance. wear resistance
At the same time, the single-layer concrete delivery pipe is not repairable. When the inner wall is worn to a certain extent, it needs to be replaced, and it is difficult to repair and put it back into use.
Further, material conveying pipes for conveying other materials such as coal also have similar problems
Method used
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[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0022] figure 1 It is a structural schematic diagram of an embodiment of the concrete delivery pipe of the present invention. Such as figure 1 As shown, the concrete delivery pipe includes a fiber composite outer pipe 1 and a polyurethane inner liner 2 .
[0023] Wherein, the fiber composite outer tube 1 includes matrix resin and fibers. The matrix resin is at least one of unsaturated polyester, epoxy resin, vinyl resin and phenolic resin. In this embodiment, the matrix resin is epoxy resin with good manufacturability, high strength and good toughness. The fiber is at least one of carbon fiber, glass fiber, aramid fiber and ultra-high molecular weight polyethylene fiber. In this embodiment, the fiber is selected from carbon fiber, especially high-strength carbon fiber with a strength above 3.5 GPa (gipa).
[0024] Carbon fiber is mainly a specia...
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Abstract
The invention discloses a material conveying pipe and a manufacturing method thereof. The material conveying pipe comprises a fiber composite outer pipe and a polyurethane inside liner arranged on the inner surface of the fiber composite outer pipe. Due to adoption of the mode, the fiber composite outer pipe which has the characteristics of light weight and high strength can realize the purpose that materials can be conveyed to a higher and farther place, and the polyurethane inside liner has better wear resistance and corrosion resistance and can effectively retard the abrasion and corrosion of the conveyed materials to the material conveying pipe, and therefore the service life of the material conveying pie is prolonged. Furthermore, after the polyurethane inside liner is worn, a new polyurethane inside liner can be coated on the inner surface of the fibre composite outer pipe again rather than directly replacing the material conveying pipe, and therefore the using cost of the material conveying pips is greatly saved.
Description
technical field [0001] The invention relates to the field of construction machinery, in particular to a concrete delivery pipe and a preparation method thereof. Background technique [0002] With the popularization of mechanized construction of various engineering constructions such as urban construction, roads and bridges, concrete pump trucks for concrete transportation have become important equipment for concrete machinery technology. With the rapid development of concrete machinery technology, concrete pump trucks need to transport concrete to higher and farther places. [0003] The concrete pump truck includes an arm frame and a concrete conveying pipe, wherein the arm frame is a telescopic or inflected distributing arm, and the concrete conveying pipe is fixed on the arm frame. During the construction process, the placing arm is unfolded, and the concrete delivery pipe fixed on the placing arm transports the concrete to a certain height and distance. In order to tran...
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IPC IPC(8): F16L9/14F16L57/06F16L58/10B29D23/00
Inventor 李晓超王佳茜李庶
Owner ZOOMLION HEAVY IND CO LTD