Method for improving service lifetime of concrete delivery pump pipe and its pump pipe

Abstract

The invention provides a method which prolongs the service life of a concrete delivering pump pipe and a pump pipe thereof, belonging to the concrete machine field. The existing concrete delivering pump pipe has the problem that the cost is low but the service life is short or the service life is long, but the manufacture cost and the weight are high and the performance/price ratio is low. The invention and the pump pipe which is manufactured by the method of the invention lead the concrete to mainly generate friction with a guide bar when the concrete motions in the pipe as a guide bar which is made of highly wearable material is added on the internal wall of the pipe body, thus generating little or no friction with the internal wall of the pump pipe body; therefore, the abrasion of the internal wall of the pipe body is reduced, the weight of the structure is lightened, the manufacture cost is reduced and the performance/price ratio of the pump pipe is obviously improved. The invention is mainly applicable to concrete machines such as concrete pump trucks, concrete tractive pumps, etc.

Description

technical field [0001] The invention belongs to the field of concrete machinery, and in particular relates to a method for increasing the service life of a concrete conveying pump pipe and the pump pipe. Background technique [0002] At present, the delivery pump pipe materials used in concrete machinery are generally made of low-carbon seamless or seamed steel pipes such as No. 20 steel, and the wear resistance of the materials is poor. This choice is mainly based on factors such as manufacturing cost and structural weight. [0003] Although some new technologies have appeared recently, such as pump tubing using high wear-resistant metal materials as liners, the service life has been improved to a certain extent, but it has resulted in a substantial increase in manufacturing costs and structural weight. There is also technology that uses materials such as high molecular weight polyethylene to make liners (patent application number 200510031382.5), and the structure weight i...

AI Technical Summary

Problems solved by technology

[0003] Although some new technologies have emerged recently, such as pump tubing using high wear-resistant metal materials as liners, the service life has been improved to a certain extent, but it has led to a substantial increase in manufacturing costs and structural weight

There is also a technology that uses materials such as high molecular weight polyethylene to make the liner (patent application number 200510031382.5), and the structural weight is reduced, but the wear resistance and manufacturing cost are still unsatisfactory

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