There is no mechanical synchronizer between the shafts of electric motors included in the design. Experience shows that in cases where the shock mode is set, self -sinchronization of rotation of shafts with debans occurs. The parameters of the working springs in vibration grounds are selected experimentally. When setting up machines for the optimal mode, they worked with the number of shocks, twice the smaller than the number of debalans revolutions. On the basis of the results of the production use of vibro-gross vibrations of the VMC-3 and VMC, in the VNII of Stroydormash, a new sample of the S-467 vibroMomel was developed, designed to immerse a metal spont and reinforced concrete piles with a section of 35 x 35 cm and a length of 10-12 m. His two electric motors will have a total power of 56 ket. The weight of the vibro -soot is approximately 2.5 tons. Another model of the S-402 vibro-Molot, intended for immersing wooden piles with a diameter of 20-22 cm in the soil, was transferred to serial production. The S-402 vibro-capacity includes two types of springs that differ among themselves in stiffness. With some springs, the number of vibrator strikes on the nakeder, when the pile is pinched in the ground, is 720 beats/min, with other springs -480 beats/min. As the tests of the first samples of this loader showed, regardless of the stiffness of the working springs, it is not much effective in the initial dive period. Piercing the pile and improving the vibration mode of the vibro -mole in many cases only after part of the weight of the Copra is transmitted to the pile, in combination with which the vibration ground should work. Almost such an additional pressed load is carried out by a winch of the copra, the traction force of which is transmitted to the pile through special stretch springs by means of steel rope and the block system. VIBROMOLOTS type VM-4 and VM-7 are intended to immerse steel spont and pipes in various soils.
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