SU1360740A1 - Arrangement for training football players - Google Patents

Abstract

The invention relates to sports equipment and makes it possible to increase the effectiveness of the training of football players. It contains a frame, several links, installed in series between sooi in a chain, with the first link of the chain attached to the frame. The chain link is articulated by means of a universal joint connected with four flat springs arranged crosswise. The first link is matched with the carriage mounted on the frame, through a disk rotatable relative to the horizontal axis with the possibility of fixing its angular position, and the last link is made in the form of a cylinder in which a spring-loaded rotating spindle is mounted, at the end of which is attached m of h. On each axis of each cardan joint a friction pair of friction is made. 1 zi f-ly, 2 ill. with about about

Description

The invention relates to sports equipment and can be used for training athletes and athletes, in particular football players.

The purpose of the invention is to increase the effectiveness of the training of football players.

FIG. Presents the proposed device, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

The device contains a frame-stand 1 on which the carriage 2 is installed with the possibility of its fixed fastening in a number of positions along the frame 1. On the carriage 2 there is a disk 3 with the possibility of its rotation on the carriage relative to the deformation and the springs 13 gradually begin to accelerate into the same The next side is from the end of the link 8, the length and inertia of which is greater than the link 11. This causes 5 deformation of the springs 10 and even slower acceleration in the same direction of the link 5, the inertia of which is even greater than the link 8. Thus, the chain links and It bends in the direction of flight of the 18, with the current and final angles of rotation of the links are different: more at the last link and less and less towards the first link. This ensures an optimal distribution of the acceleration rates, the accelerations of the links, depending on their own inerno-horizontal axis, and the fixation of the selection. A less inertial element of a variable angle of position, for example, is slid faster than a more inertial one, a hook nut 4. The disc 3 is the first one that gradually accelerates.

The angle of rotation of all links depends on the impact force and the stiffness coefficient of the flat springs 7, 10, and 13. These springs return the chain of links after the impact to the initial position of the ball 18. In this case, the elastic vibrations of the chain links are extinguished by all the friction pairs 14 in each cardan joint. Oscillatory process in the circuit does not occur. The chain of links, deviating, also smoothly in the reverse sequence of displacements of links returns to its original position. Since in the physics of the operation of the friction pair of dry friction there is a “dead zone of friction rest,” m 18 does not return to its original position, but occupies a random position in a small area near its initial position. This further enhances the effectiveness of the workout.

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a link in a serial chain of device links. Between the disk 3 and the second link 5, a universal joint 6 is installed, while the coaxial position of the links 3 and 5 is set to 20 by four flat springs 7 arranged crosswise (in Fig. 1 only two flat springs 7 are shown). Link 5 is conjugated to the next successive link 8 by means of a second universal joint 9, the coaxial position of which is also specified by four flat springs 10. Link 8 is conjugated with a subsequent link 11 of the chain by a third universal joint 12, the coaxial position of which is also given four flat springs 13. On each of two mutually perpendicular axes of cardan joints 6, 9, and 12, friction pairs 14 of dry friction are installed, the structures of which are widely known (for example, two discs pressed against each other through frictional onnuyu gasket). The last link 11 is made in the form of cylinders, in which the rod 15 is mounted, spring-loaded via a compression spring 16 and equipped with bearings 17, which ensure free rotation of the rod 15. A football ball 18 is attached to the end of the rod 15. 40

The device works as follows.

The athlete sets the desired height of the carriage 2 on the frame 1, fixes it, also sets the desired horizontal position of the device by turning the disk 3 depending on the desired direction of strikes on the choo, fixes it with a nut 4. The training consists in testing the strikes on the bow by force and precision shots.

Upon impact on the ball, the ball is shifted to the side. In this case, its rotation is fulfilled by bearings 17, the initial possible sharp axial displacement of the light rod 15 is fulfilled due to its displacement in the cylinder 11. The spring 16 returns the rods 15 to the initial position. After hitting, it first begins to turn.

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the lighter last link 11 of the chain relative to the universal joint 12, then as

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deformation and springs 13 gradually begin to accelerate in the same direction following link 8 from the end, the length and inertia of which is greater than link 11. This causes deformation of springs 10 and even slower acceleration in the same direction of link 5, the inertia of which more than link 8. Thus, the chain of links is bent in the direction of flight of the ball 18, and the current and final angles of rotation of the links are different: more at the last link and less and less towards the first link. This ensures an optimal distribution of acceleration rates and accelerations of the links, depending on their own inertia. A less inertial link shifts faster than a more inertial link, which it gradually accelerates.

The angle of rotation of all links depends on the impact force and the stiffness coefficient of the flat springs 7, 10, and 13. These springs return the chain of links after the impact to the initial position of the ball 18. In this case, the elastic vibrations of the chain links are extinguished by all the friction pairs 14 in each cardan joint. Oscillatory process in the circuit does not occur. The chain of links, deviating, also smoothly in the reverse sequence of displacements of links returns to its original position. Since in the physics of the operation of the friction pair of dry friction there is a “dead zone of friction rest,” m 18 does not return to its original position, but occupies a random position in a small area near its initial position. This further enhances the effectiveness of the workout.

Claims (2)

1. A device for training football players containing a carriage mounted on a vertical frame with a rotatable element. Carrying a ball holder that is spring-loaded to it, including a guide cylinder and a spring-loaded rod with a ball at the end, with monomer - rotated with the possibility of rotation from the kicker of a football player, and a means of resisting the displacement of the holder of the ball, characterized in that, in order to increase the efficiency of the training by imitating its real conditions, the holder of the ball is equipped with several links related to Between themselves and with the swivel element of the carriage and the cylinder by means of flat springs and cardan joints, while the means of resisting the movement of the holder is made in the form of frictional friction pairs mounted on the axes of each cardan joint. 2. The device according to claim 1, characterized in that the rotary element is made in the form of a disk and is provided with a lock for its angular position. fpuz.l 2