pipe roll grooving machine is a special machine for cutting waste pipe heads at both ends of seamless steel pipes in large quantities, automatically or semi-automatically, with an annual pipe cutting capacity of 400,000 tons. The end face of the cut pipe can automatically invert the outer Angle, the inner Angle or cut the big groove. The pipe roll grooving machine has the characteristics of high rigidity, high power, high automation and high production efficiency, and is the necessary equipment for the production of seamless steel pipes. The working process of pipe roll grooving machine is controlled by the hydraulic system. Due to the large load and frequent action of the bracket cylinder in the hydraulic balance circuit of the original pipe roll grooving machine, the energy loss is too large. Excessive energy loss is not only a waste, but also causes a series of problems such as rising oil temperature, increasing leakage, accelerating oil aging and affecting the quality of incision processing. Therefore, the hydraulic balance circuit of the bracket cylinder is analyzed, and a new hydraulic balance circuit which can recover and utilize the potential energy of heavy objects is proposed.

The cutting of the pipe is usually in the form of electric pipe roll grooving machine and sawing. The use of electric pipe roll grooving machine requires power supply, large working space, easy to produce electrical spark and noise; Sawing operation efficiency is low, long cycle, can not be used in the construction site. As a result, the use of electric pipe roll grooving machines and saws in pipeline construction and maintenance operations is limited.

Manual pipe roll grooving machine is a kind of machine to achieve pipe cutting through its own rotation, which is mainly suitable for cutting steel and cast iron pipelines with different pipe diameters, different media and different temperatures, and can be widely used in pipeline construction and maintenance operations. Manual pipe roll grooving machine is widely used in pipeline construction and maintenance operations in foreign countries. The import of manual pipe roll grooving machine from abroad is not only high in price, but also long in delivery time, which brings inconvenience to future maintenance. Therefore, we should choose as many as possible the domestic first manual pipe roll grooving machine series products.

Manual pipe roll grooving machine application points

Selection is made according to the diameter of the cut pipe; When fixing the manual pipe roll grooving machine, the tightness should be moderate to ensure that the 4 cutting knives are in good contact with the outer wall of the pipe; When cutting, use the crank to pull the manual pipe roll grooving machine in one direction, and the force should be uniform; Manual pipe roll grooving machine every half turn, you can tighten the nut with the crank to feed.

(1) The manual pipe roll grooving machine has the advantages of simple structure, small size and easy operation, and can be applied to the cutting of pipelines of different calibers, different media and different temperatures.

(2) Small working space, you can cut large diameter steel and cast iron pipe fittings in a limited space. When cutting a 200 mm pipe, only 100 mm of operating space is needed around the pipe; When cutting a 500mm pipe, only 200 mm of operating space is needed around the pipe.

(3) The operation does not require power supply, low noise, safe use, can be cut in ditches, underwater, explosive environment with low noise, especially suitable for use in the field without power.

(4) The cutting is labor-saving and fast, and the shape of the pipe incision after cutting is regular.

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