Device and process of rolling penstock stiffening ring

Abstract

The invention discloses a device of rolling a penstock stiffening ring. The device comprises a box body, a driving roller driving assembly, a driven roller assembly and two driving roller assemblies.The driven roller assembly comprises a driven roller and a supporting body. Driving rollers and the driven roller are distributed at an interval in an isosceles triangle shape. The upper ends of the driving rollers and the upper end of the driven roller are each provided with a wheel. A horizontal slide rail is arranged on the upper end face of the box body. The supporting body is supported in theslide rail. The driving rollers are driven by worms and gears. As a further improvement, the driven roller assembly is driven by an oil cylinder, and each wheel comprises a lower disc, a middle discand an upper disc which are detachably installed on the upper end faces of upper shaft shoulders of the driving roller assemblies and the driven roller assembly. The invention further discloses a process of rolling the penstock stiffening ring through the device of rolling the penstock stiffening ring. No multi-stage deceleration is needed, the structure is compact, and the self-locking property is good; by means of hydraulic drive, the driving force is large, the rolling precision is high, and the requirement for rolling a high-strength steel plate is met; the wheels are convenient to replace; and the penstock stiffening ring meeting use requirements can be rolled.

Description

technical field [0001] The invention relates to the technical field of press forming, in particular to a pressure steel pipe stiffening ring rolling equipment and a rolling process. Background technique [0002] The pipes of hydropower stations are pressure steel pipes, generally with a large diameter, and several stiffening rings need to be installed outside the pipes. The manufacturing process of this kind of stiffening rings is generally to cut steel plates into N pieces of arc plates and assemble and weld the rings. The main disadvantages are: many welding joints And the deformation is large, and the production speed is slow. Chinese Patent Publication No. CN 208613441 U discloses a flange forming machine. The steel plate is rolled into a flange by two driving forming wheels, one and a driven forming wheel arranged on the frame. The flange forming machine The main defect is that the transmission system is a gear transmission, which requires multi-stage deceleration, and...

AI Technical Summary

Problems solved by technology

[0002] The pipes of hydropower stations are pressure steel pipes, generally with a large diameter, and several stiffening rings need to be installed outside the pipes. The manufacturing process of this kind of stiffening rings is generally to cut steel plates into N pieces of arc plates and assemble and weld the rings. The main disadvantages are: many welding joints And the deformation is large, and the production speed is slow

Chinese Patent Publication No. CN 208613441 U discloses a flange forming machine. The steel plate is rolled into a flange by two driving forming wheels, one and a driven forming wheel arranged on the frame. The flange forming machine The main disadvantages are: the transmission system is gear transmission, which requires multi-stage deceleration, and the structure is not compact. In addition, the self-locking property is poor, and the active forming wheel cannot be self-locked when it is reversed.

It is also impossible to roll stiffening rings of penstocks that meet the requirements of use with this kind of equipment

Images