Pipeline connection structure and manufacturing method thereof, concrete conveying system and concrete pump truck

Abstract

The invention relates to the technical field of industrial machining, and discloses a pipeline connection structure and a manufacture method thereof, a concrete conveying system and a concrete pump truck. The manufacture method comprises the following steps that a pipe fitting which is of needed length and is subjected to thermal treatment is cut; a flange which is provided with a detachable connection structure is selected, or a detachable connection structure is machined on the connection end of the flange; a detachable connection structure is machined on the connection end of the pipe fitting; and the connection end of the pipe fitting is detachably connected with the connection end of the flange. By adopting the above technical scheme, the machining and manufacturing of the pipeline connection structure on site are convenient under the condition that a pipe fitting of needed length is not available; the connection of the pipe fitting and the flange is realized conveniently; the preparation time and logistic space for the pipe fitting are saved; the cost is reduced; and the pipe fitting does not need to be welded to the flange under the condition that thermal treatment cannot be performed; the quality of the pipeline connection structure is improved, and the service life of the pipeline connection structure is prolonged; and potential safety hazards are reduced.

Description

technical field [0001] The invention relates to the technical field of industrial processing, in particular to a manufacturing method of a pipeline connection structure, a pipeline connection structure, a concrete delivery system and a concrete pump truck. Background technique [0002] The boom structure of the pump truck is complex. At present, due to the limitation of the layout position of the concrete delivery pipeline, the length specifications of the delivery pipeline are very many. According to the length and size of the pipe fittings, it is divided into standard pipes and non-standard pipes. Among them, the inevitable errors in the assembly and manufacture of each attachment frame on the concrete boom of the pump truck, due to the accumulation of the errors, some of the delivery pipes in the concrete delivery pipeline must use non-standard pipes according to the actual assembly size, to compensate for this error. [0003] Moreover, usually, the manufacturing proces...

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Problems solved by technology

[0003] Moreover, generally, the manufacturing process of concrete delivery pipes requires welding flanges at both ends of the pipe fittings first, and then special heat treatment, and this heat treatment process requires special large-scale equipment, which can only be carried out in factories, so concrete delivery pipes only Can be made in the factory according to the required size

[0004] In the engineering practice of concrete pump trucks, because the life cycle of the delivery pipe is relatively short, it needs to be replaced frequently. If there is a lack of inventory in actual use, and it is impossible to manufacture non-standard pipes of the required size in a timely manner, it is necessary to suspend the project. Waiting for the manufacturer to produce spare pipe fittings will delay the construction period and cause economic losses

[0005] In practical applications, sometimes in order to ensure the production schedule, the existing delivery pipe is cut according to the required length, and then the flanges are welded to both ends of the pipe on site. The delivery pipe after heat treatment (quenching) is rebuilt and welded, and heat treatment cannot be performed after welding. The high temperature of welding will anneal the heat-treated delivery pipe, which will affect the quality and life of the delivery pipe, and there is a big safety hazard.

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