SU654820A1 - Impulsive variator - Google Patents

Description

Pus 1 in which the eccentric shaft 2 is located, with three needle bearings 3 mounted on it, offset from each other by 120 ° in the circumferential direction. The three rocker arms 4 are in contact with the outer race of the bearings 3. The shaft 2 with the bearings 3 and the rocker arms 4 is a conversion mechanism. In the cylindrical part of the rocker arms 4, three outer sprockets 6 are seated on the keys 5, which, by means of the rings 7, rest on the holder 8, which is overall for the three free-wheeling mechanisms. Between the outer sprocket 6 and the yoke 8 in the separator 9 there are rollers 10. The yoke 8 rests on the sleeves 11 and 12, while the hub 12 is the coupling half of the elastic coupling. The other coupling half is sleeve 13. Elastic rods 14 are inserted into the profiled sockets of sleeves 12 and 13. To fix sleeve 13 against sleeve 12, there is a spring 15. The movement mechanism of sleeve 13 consists of a nut 16, sleeve 17 with a thread and a thrust bearing 18. In the lid 19, there is a groove that allows manually using a rod inserted into the holes of the nut 16 to rotate it. The sleeve 12 is connected to the yoke 8 by means of the pinch 20, and the sleeve 13 is connected to the splined output shaft 21. The constant force shorting of the rocker arm 4 and the bearing 3 is carried out by means of a spring 22.

Impulsive variator works as follows.

During the rotation of the eccentric shaft 2 of the yoke 4, an oscillatory movement is obtained, which is transformed by the free-wheeling mechanisms into an impulsive rotation of the holder 8 in one direction. For one revolution of the shaft 2, the holder 8 receives three pulses. The sleeve 12 receives the same impulsive rotation and, through the elastic elements 14, transmits it to the sleeve 13 and the output shaft 21. With the load variations on the output shaft 21, the angle of relative twisting of the coupling halves 12 and 13 changes, at which the required torque develops by the variator elastic system. The dependence of the relative twist angle of the half couplings 12 and 13 on the load explains the self-tuning of the average angular velocity of the impulsive variator under consideration. Nonlinear elastic coupling with elastic rods 14, applied in

transmission, expands the range of self-tuning of the average angular velocity of the output shaft 21 of the variator to the load and reduces the possibility of onset of resonance in the mechanical system to a minimum. The adjustment of the transmission self-tuning range is carried out manually by rotating the nut 16 without stopping the variator. When this sleeve 13 receives the translational movement

along the output shaft, changing the average stiffness of the elastic coupling and the average torque transmitted by the elastic coupling. Drive working machines with described

the impulsive variator has the property of adapting to the changing conditions of the flow of a given technological process, it allows to carry out the technological process under optimal conditions with simultaneous impulsive influence on the material being processed. All this reduces the energy consumption per unit of finished product and improves its quality. Other design options for the impulsive variator may be proposed. For example, instead of elastic elements of an elastic clutch of varying stiffness, made in the form of rods, elastic plates of rectangular cross section may be used, wound into the space between the known profiled teeth of the half couplings of the elastic clutch of variable stiffness.

Claims (2)

1.Patent of France No. 1367446, cl. F 16H, 1960. 2. USSR Author's Certificate No. 313002, cl. F 16H 21/42, 1969. 75, 20 rpui 1 21