Large-diameter circular pipe cutting equipment

Abstract

The invention relates to large-diameter round pipe cutting equipment which comprises a cutting workbench, a cutting machine installed on the cutting workbench, clamping devices arranged on the two sides of the cutting machine and used for conducting external clamping on a round pipe, and inner supporting devices arranged at the two ends, close to the length direction of the cutting workbench, of the cutting workbench correspondingly. The inner supporting device is used for conducting inner radial supporting on the to-be-clamped position of the to-be-cut circular pipe so that enough clamping force can be obtained when the clamping device conducts clamping. The inner supporting device is arranged according to the characteristic that the space in a large-diameter round pipe is large, then the inner supporting device is designed from the problem that radial supporting needed to be solved for clamping the round pipe is insufficient, and a flexible support and a rigid support are further arranged in the inner supporting device; in this way, a proper supporting mode can be selected according to the circular pipes with different characteristics, and therefore the application range of the supporting device is larger than that of plastic pipes and metal pipes mentioned in the background technology, and the supporting device is also suitable for the circular pipes made of building materials.

Description

technical field [0001] The invention belongs to the technical field of cutting, and in particular relates to a cutting device used for cutting large-diameter circular pipes. Background technique [0002] Large-diameter plastic round pipes include pressure pipes and non-pressure pipes (there is no prescribed definition for large diameters, and the large diameters referred to in this background technology refer to diameters above 400mm). Non-pressure pipes are mainly used in buried drainage pipes, As well as rainwater utilization projects, the maximum diameter of the actual application is 2500mm. The pressure pipe is mainly used in water diversion projects, sea drainage pipelines, and irrigation pipelines. The diameter of the actual application is 400mm~1200mm. [0003] Among them, the large-diameter plastic round tube deforms greatly after being radially compressed, and cannot be effectively clamped before being cut by sawing equipment. At present, most of the cutting is perf...

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Problems solved by technology

[0003] Among them, large-diameter plastic round pipes deform greatly after radial compression, and cannot be effectively clamped before cutting with sawing equipment. At present, most of them are cut manually with hand-held cutting machines. Due to the large diameter, the efficiency of manual cutting is low. And the cutting accuracy is low, and it is necessary to leave a grinding residue during cutting, so after the cutting is completed, it needs to be ground to the required size, which is labor-intensive and time-consuming

[0004] Another kind of large-diameter thin-walled metal round pipe is mostly cut with a reciprocating saw mechanical cutting method. Since there is no support in the middle of the large-diameter thin-walled metal round pipe, the round pipe will be deformed during the clamping process. Warping, the round tube cannot obtain enough clamping force, so that the round tube is prone to vibration due to insufficient clamping force during the cutting process, and the stability during cutting is not high, resulting in high damage rate of the saw blade and high cutting cost

[0005] In view of this, there is a lack of an ideal device that can be used for cutting large-diameter round pipes in the prior art

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