FIELD: sport.
SUBSTANCE: invention relates to a device for the physical training of athletes, in particular for the development of the strength of the muscles of the arms and chest. The device for training the muscles of the arms and chest includes a hollow box 1 (Fig. 1), inside which there are two devices of the same design for creating and regulating the load for the right and left hands. Each device contains a DC motor 2 of independent excitation, which is connected to the output of an adjustable current source 3. To the control input of an adjustable current source 3 from a setting element 4, made in form of a potentiometer, a signal arrives for setting the magnitude of the resistance force or the same as the converter output current value. In this case, a traction pulley 7 (8) is located on the shaft 5 (6) of the electric motors 2, with the end of the flexible rod 9 (10) fixed on it. On the hollow box 1, a universal bench 11 is fixed with an adjustable tilt position of the back 12, which allows a user lying on his back to perform a press from the chest or spreading dumbbells to the sides. On both sides of the universal bench 11 in the chest area of the user by means of support discs 22 and 23, vertical guide tubes 18 and 20 are rigidly fixed to the hollow box 1. Flexible rod 9 is passed inside the guide tube 18 through the locking means 19, while it is connected at one end with a pulley 7, and its other end is fixed to a dumbbell 15 (Fig. 2). Flexible rod 10 is passed inside the guide tube 20 through the locking means 21, while at one end it is connected to the pulley 8, and at its other end it is fixed to the dumbbell 17. At the upper end of each guide tube 18 (20), the locking means 19 (21) is fixed, on which a stopper 24 (25) is mounted to hold the right 15 and left 17 dumbbells in their original position, while a button for disconnecting from the power source 26 is mounted in the stopper when the dumbbells 15 and 17 return to their original position.
EFFECT: use of this technical device makes it possible to increase effectiveness of the development of the strength of the muscles of the arms and chest of athletes by regulating the magnitude of the load, taking into account individual physical capabilities and, therefore, to increase the specific qualities of the manifestation of the user's motor abilities.
4 cl, 2 dwg
