METHOD AND DEVICE FOR CONTINUOUS MANUFACTURING FERRUM CONCRETE PIPE LINE Russian patent published in 1996 - IPC

FIELD: construction. SUBSTANCE: trench 18 is provided in the soil, pipe line 22 is formed and put on the trench bottom. The reinforcement, which is made up as a grid closed over periphery, is fed between the walls of extruder 1 with nozzle 2 and depth vibrator 7 with unit 11 for forming hollows. When the grid leaves the nozzle it is rigidly secured to the bottom and walls of the trench by way of anchor 23. Concrete mixture 19 and armature are then continuously fed providing the same rate of feeding. Pipe line 22 is formed in the space between nozzle 2 and unit 11 for forming hollows mounted coaxially inside it by towing extruder 1 with nozzle 2 and vibrator 7 with unit 11 with respect the armature, the mixture being consolidated simultaneously in the extruder zone by the vibrator. The device has concrete mixer 21, receiving hopper 3, facility for feeding reinforcing material, extruder 1 with nozzle 2, vibrator 7, and unit 11 for forming hollows. The facility for feeding reinforcing material is made up as tubular housing 4 and inner pipe 8 provided with end face plug 12 at its free end and mounted coaxially inside the housing. The side of tubular housing 4 is provided with through opening 13 for feeding reinforcing material made up as metallic grid 5 and port 15 for its binding. Vibrator 7 is suspended over all length of extruder 1 at the end of inner pipe 8 and has shock-absorber 9 for absorbing longitudinal vibration. Shock-absorber 9 is connected with unit 11. EFFECT: enhanced efficiency. 3 cl, 3 dwg