SU469474A1 - The device for throwing - Google Patents

Description

The invention relates to sports equipment, in particular to devices for throwing dust. A device for throwing bladders, such as tennis ones, is known, comprising a base, a rotatable trunk mounted therein, in which a spring-loaded drummer associated with a drive is placed, a magazine for the pulley and a receiver. The effectiveness of training on such a device is low, since it does not imitate shocks, telling various directions of rotation because of the stationary position of the receiver relative to the drummer. In order to increase the training efficiency by expanding the range of simulated enemy strikes in the proposed device, the receiver is made in the form of a spring-loaded C-shaped bracket installed in front of the barrel on the console with vertical movement, for example, by means of an eccentric and a holder to move it in a direction perpendicular to the movement of the bracket. In this case, the console is made in the form of a ring mounted at the entrance to the receiver and having restrictive guides for the broom. FIG. 1 shows a writable device, side view; in fig. 2 - the same, top view; in fig. 3 - the same, front view; in fig. 4 - receiver, whose side view; in fig. 5 - the same, top view. The device comprises a base 1, a drive mounted on it, including an electric motor 2 and a gearbox 3, a barrel 4 mounted rotatably on an axis 5 by means of a bracket 6 and a sleeve 7 freely attached to the axis of axis 7. The axis 5 is connected to the shaft 8 of the gearbox 3 carrying crescent-shaped drivers 9 and the pulley 10. In the barrel 4 there are placed a drummer 11 with a protrusion 12 for interacting with sickle-shaped platoon drivers 9, a spring 13, a plunger 14 with a screw stop 15 and a fifth 16, which serve to preload the spring 13. The plunger 14 has a pin 17 for fixing trunk position in about the depressions 18 of the guide arcs 19. The pulley 10 is connected by a belt 20 to the shaft 21 of the agitator 22, housed in a 23 m store, connected to a 24 m hopper, an ir ball mounted on a cantilever 25 of the barrel 4. On the protrusions 27 of the console 25, a receiver is secured, carried out in the form of a spring-loaded (not-shown) C-shaped bracket 28 installed in front of the barrel 4 with the possibility of vertical movement, for example, by means of an eccentric 29 located under the crossbar 30 of the bracket (see FIG. 4) and connected to an axis 31 fixed by means of plank 32 on the barrel 4. In the cross-bar 30 of the bracket, a holder of 33 meters is fixed and means for moving it (not shown) in the groove 34 in the direction perpendicular to the movement of the bracket.

In this case, the console 25 is made in the form of a ring mounted at the entrance to the receiver and having its limiting guides 35 for the masses.

Use the device as follows. The barrel 4 is set at the required angle to the horizon by rotating it about the axis 5 and fixed by the pin 17 of the plunger 14 in the hollow 18 of the guide arches 19. This automatically changes the compression force of the spring 13, since the guide arches 19 are eccentrically fixed relative to the axis 5 , and the plunger 14 is moved along the barrel in one direction or another. The adjustment of the compressive force of the spring 13 is carried out by means of a screw hole 15.

To ensure lateral twisting of the holder, holder 33 is displaced along the groove 34 of the bracket 28 in the necessary direction relative to the barrel 4. To obtain a more complex twist of the bracket, the bracket 28 is additionally moved up or down relative to the barrel by the eccentric 29, the rotation of which is informed by means of the axis 31.

When the electric motor 2 is turned on, sickle-shaped platoon 9 and pin 10, mounted on the shaft 8 of the gearbox 3, are rotated. At the same time, through the belt drive 20, the rotation is transmitted to the shaft 21 of the agitator 22 housed in the store 23, from where the ball enters the drive 24 and then into the receiver of the ball. Mice are prevented from falling out of the receiver by elastic limiting guides 35, for example, strings. M h gets on the holder 33 and occupies a prelaunch position.

Simultaneously, the sickle-shaped coppers 9, at their own rotation, interact with the protrusion 12 of the striker I and take the latter back along the grooves 36 of the barrel 4, compressing the spring 13, which, when the co-workers 12 end with the protrusion 12, sends the drummer abruptly in the direction of the ball.

By changing the frequency of departure of the mine, the compression force of the spring 13, the angle of inclination of the barrel 4 to the horizon, as well as the eccentricity of the ball relative to the impactor (by not moving the holder 33 and the bracket 28 relative to the barrel 4 in mutually perpendicular directions) on the device, a simulated range of simulated strikes the enemy, which in turn increases the effectiveness of training.

Subject invention

Claims (2)

1. A device for throwing a tennis ball, comprising a base, a rotatable stem mounted therein, in which a spring-loaded drummer associated with a drive is placed, a magazine for the pulley and a receiver, characterized in that enhancing the training efficiency by expanding the range of simulated enemy strikes, the receiver of which is made in the form of a spring-loaded C-oraznoy bracket installed in front of the barrel on the console with the possibility of vertical movement, for example, by means of an eccentric and in pop rechine which the holder of the ball is fastened, and means for its pere.meschenn in a direction perpendicular to the movement of the bracket. 2. The device according to claim 1, characterized in that the console is made in the form of a ring mounted at the entrance to the receiver and having restrictive guides for the pulp.