Concrete mixture

At the moment when the piston comes to N. m. T. (Starting position of the cycle), the fight also reaches its extreme position in which it strikes the tail of the instrument. The main parameters of the mechanism (the number and length of the piston moves, the mass of the box and the volume of the air cushion) are selected so that the piston fluctuations, the own fluctuations in the air buffer and the internal vibrations of the box become synchronous. The weight of the ELECRIC ECM-1 16, 5 kg, the lively force of the box at the time of the blow 4, 865 kg/m, the number of shocks per minute 1,100, the weight of the box 1, 08 kg, the piston stroke 60 mm, the diameter of the cylinder 53 mm, the largest pressure in Air buffer 16, 7 AM, electric motor power 0, 975 ket. With the vibration of inactive concrete, the adhesion of the latter with reinforcement improves and the shrinkage of concrete decreases. By the genus of the drive, electric vibrators are divided into electric motor and electromagnetic.