SU1729536A1 - Device for training vestibular analyzer of sportsman - Google Patents

Abstract

Usage: the invention relates to sports equipment, in particular to training apparatus for training a vestibular analyzer. SUMMARY OF THE INVENTION: A simulator of the variator type is used in the simulator, which makes it possible to ensure the independence of two movements: rotational about the vertical axis and translational along it, thus creating the possibility of adjusting the angular velocity. 1 il.

Description

The invention relates to sports equipment, in particular to exercise machines for training the vestibular analyzer.

A simulator for training and an objective assessment of the state of an athlete's vestibular analyzer is known.

The closest to the one proposed is a simulator for the integral assessment of human orthograde stability. The advantage of this simulator is that it combines the rotational movement of the athlete about the vertical axis with simultaneous movement along it. Such a combination of movements allows simultaneous combined stimulation of all receptors of the vestibular analyzer (receptors of the otolith apparatus and semicircular canals). The advantages of the simulator also include the possibility of objective registration of all components of the vestibular reaction.

However, this simulator can solve a limited range of tasks. The fact is that its constructive solution does not allow to fully realize the necessary conditions for the differential study of the receptor apparatus of the semicircular canals of the vestibular analyzer.

The simulator uses a screw-nut transmission, in which the vertical displacement (velocity) is rigidly connected to the angular (velocity), ".

where w is the angular rotational speed of the athlete, 1 / s;

h - thread pitch, m;

V is the athlete's vertical movement speed, m / s.

However, to create a differentiated load on the semicircular canals of the vestibular analyzer and to determine

cl

with

its sensitivity along three orthogonal axes is necessary to ensure the independence of movements: translational and rotational.

The purpose of the invention is to increase the efficiency of the training process by introducing an independent adjustment of the angular velocity of rotation of the test subject at an unregulated linear speed of vertical movement, as well as determining the sensitivity thresholds of permissible loads on the semicircular canals of the vestibular analyzer.

This goal is achieved by using a variator type device in the simulator, which allows to ensure the independence of two movements: the rotational axis relative to the vertical axis and the translational axis along it. At the same time, it is possible to control the angular velocity, which is very important for determining the sensitivity thresholds of the semicircular canals of the vestibular analyzer.

The drawing shows the kinematic scheme of the proposed simulator.

The simulator includes the transfer screw-nut 1 with trapezoidal thread, the nut of which can rotate relative to the support. In the lower part, the nut is rigidly connected to the horizontal disc 2. The screw has an adjustable stop 3, with which it can reach an unregulated stop 4. The stop 3 has a stop screw by means of which it is fixed in a predetermined position. This creates the possibility of adjusting the magnitude of the vertical stroke of the screw (X), which determines the training time. To prevent rotation of the screw, a guide sleeve 5 is installed, which is rigidly connected to the body of the simulator, allowing the screw shaft to reciprocate in the vertical direction. The guide sleeve 5 and the screw are a movable spline connection.

To adjust the angular velocity, a simulator type device is used in the simulator, which consists of two discs 6. The axes of these discs can be set at a predetermined angle by means of a special device 7. The discs 6 contact the outer surface with the end surface of the horizontal discs 2 and 8. with the guide sleeve 9. The screw shaft 10 with the guide sleeve 9 forms a movable spline joint, in the lower part of which the support handles 11 are fastened to hold the athlete. Through the bearing unit 12, the shaft 10 is rigidly axially connected with the shaft of the transmission screw screw-nut 1. The bearing unit 12 is necessary for the alignment of the movements of the shaft 10: translational and rotational. In the vertical direction, the entire shaft line consists of a screw-nut transfer screw 1, in the lower part of which there are splines, a bearing assembly 12 and a shaft 10 with support knobs 11, in the upper part of which there are also splines.

The angular velocity of the shaft 10 will be determined by the ratio

a „- PI RI hell Рз

(2)

where ai is the angular velocity of rotation of the nut in the screw-nut transmission, 1 / s;

ad-angular velocity of the shaft 10 (rotation of the athlete), 1 / s;

RI is the radius of the point of contact of the disks of the variator 6 with disk 2;

Cs - the radius of the point of contact of the disks of the variator 6 with the disk 8.

By changing the angle of inclination of the axes of the disks 6 of the variator (2), the radii RI and NC will be changed. As a result, regulation of the angular velocity of the ultrasonic is achieved.

The simulator works as follows.

Under the action of the athlete's body weight, which is in the hanging position and holding the support arms 11 of the simulator, the shaft 10 receives translational movement in the vertical direction. Through the bearing unit 12, the transfer screw screw-nut 1 also receives translational movement in the vertical direction. As a result of the longitudinal movement of the screw, the nut receives a rotational movement, which through the links 2, 6, 8 and 9 is transmitted to the shaft of the screw 10. As a result, the shaft 10 sends to the translational and rotational movement. The angular rotational speed is adjusted by means of a special device 7, which allows the axis of the discs 6 to be set at a predetermined angle before the athlete’s training. When the screw moves down by the value of X, it in the lower position reaches the stop 4, the position of the stop 3 determines the screw travel time, i.e. exercise time, and therefore dosage of vestibular load.

To return the simulator to its original (working) state, it is necessary to manually rotate the shaft of the screw 10 using the knobs 11 in the direction opposite to the working movement. When the shaft 10 rotates via links 9, 8, 6, and 2, the rotational movement of the nut 1 is connected, with the result that the screw will rise itself through the threads.

As a result of the application of the proposed simulator, the angular rotational speed of the athlete can be controlled independently of the linear velocity of the vertical movement.

Claims (1)

Formula of an exercise simulator for training an athlete's vestibular analyzer, containing a screw-and-nut rotation transmission for imparting rotational motion to the athlete relative to the vertical axis while simultaneously moving along it, and supporting knobs connected through the bearing assembly with the free end of the screw athlete, characterized in that, in order to increase the efficiency of the training process through independent adjustment of the angular velocity of rotation of the athlete, the simulator is equipped with two parallel spaced horizontal discs, two spigots covering the screw and located on both sides of the bearing assembly guide bushings for providing, without rotation, reciprocating motion of the screw, two discs spaced between the horizontal discs with the possibility of contact with their end surfaces and installing relative to them at a given angle , and two adjustable stops, limiting the axial movement of the screw, moreover, one of the horizontal discs is rigidly connected with the nut and the other with ravl guide sleeve situated between the bearing unit and the supporting handles, the screw in the zones interacting with the guide sleeve having spline portions, and the guide sleeve disposed between the bearing assembly and the horizontal disk rigidly associated with the nut secured to the base simulator.