RU2512792C1 - Simulator for training rowers - Google Patents

Abstract

FIELD: sports.

SUBSTANCE: invention "Simulator for training rowers" is intended for training athletes performing in rowing. Computer-training complex consists of a frame on which a carriage with a movable seat for an athlete is mounted, foot rests, handles of conventional oars, loading module comprising aerodynamic turbine, as well as comprising sensors of forces and displacements. The loading simulator module additionally comprises an electromagnetic braking device, at that the sensors are mounted on the carriage with the foot rests, on the handles of conventional oars, the movable seat and the loading device, and are connected to the computer that reads the information coming at them and, depending on the accuracy of technique of the paddle implementation, generates a control signal coming to the electromagnetic braking device, creating an additional braking of the aerodynamic turbine.

EFFECT: approximation of conditions of the training process on the simulator to the conditions of the training process in a boat on the water.

4 cl, 1 dwg

Description

The simulator, which is a computer-training device for training rowing athletes in rowing, is designed to conduct the training process on land in conditions as close as possible to the training process conducted in a boat on the water.

The rowing boat has a number of features, the main one of which is the presence of a movable seat for the athlete, which distinguishes the claimed simulator and the training process conducted on it from, for example, rowing in a kayak or canoe.

Known simulator, which is a device for training rowers, which includes a pool of water and a movable rowing apparatus, which is made in the form of a trolley having a mass of a real boat, an oar, and a shock absorber connected to the rowing apparatus, made in the form of several loops and having the ability to change degree of tension. In addition, there is a kinematically connected with a dynamometer simulator of hydrodynamic resistance, made in the form of a system of movable and fixed blocks with a horizontally mounted cable, the end of which is rigidly fixed [1].

The specified simulator allows you to perform exercises in conditions close to real rowing, but involves the construction of an expensive room with a swimming pool located in it, which makes it not economical.

A well-known simulator for training athletes-rowers acting in rowing [2], consisting of a frame mounted on wheels, on which the back rest is fixed, a seat for the athlete, a carriage with fixed foot rests, and a movable one are mounted on the frame carriage with palm rests. Thus, the carriage with foot stops, as well as the carriage with manual stops can move along the frame of the simulator. A disadvantage of the known simulator is the relatively complex design, and the presence of the back rest does not allow a complete imitation of the process of rowing and, therefore, to achieve the desired training efficiency.

The most common simulator for athletes involved in rowing is the Concept simulator of various modifications. The simulator is a rowing seat movably mounted on the frame, a power element mounted on the frame, consisting of an aerodynamic brake, foot stops, conditional oar handles, from which the working force is transmitted through the bicycle chain to the power element. The return stroke of the handles is ensured by the tension of the rubber band and the freewheel [3].

The CONCEPT simulator allows you to develop strength endurance, get closer to the stroke cycle, but its drawback is that the design with fixed foot rests does not fully simulate the rowing process in the boat on the water.

Closest to the claimed device is a simulator [4] for training rowing academics, containing a frame on which the carriage with a seat for the athlete is movably mounted. The foot stops and the loading mechanism are fixedly mounted on the frame. The latter includes a flywheel with paddles. The flywheel is mounted in a casing made in the form of a disk with a protective grill. By means of a chain and a shock absorber cord, the flywheel is connected to the handle. Thus, the seat for the athlete is made reciprocating, and the loading mechanism in the form of an air turbine, together with the foot stops mounted on the simulator frame, remain stationary.

Known devices do not allow to fully reproduce the process of rowing, since their design with fixed stops for legs does not fully simulate the technique of rowing in a boat on the water.

The objective of the invention is to create a training device for training rowers-academics on land, which will achieve a complete simulation of the working conditions of the rower that arise during the process of academic rowing on the water, as well as developing and consolidating the skills to correctly perform the technique of the stroke cycle.

The task is achieved due to the design of the proposed computer-training complex. The complex consists of a frame on which the first movable carriage with a seat for the athlete is installed and the second movable carriage with foot stops and load modules (elements) installed on it, including an aerodynamic turbine and an electromagnetic brake device. The carriages are mounted on the frame in such a way that during the “stroke” the movable carriage with the rower seat and the movable carriage with foot rests move in opposite directions along the frame. The training complex also includes conditional oar handles, as well as force and displacement sensors, which are mounted on the carriage with foot stops, on conditional oar handles, a movable seat, and load modules (elements). The sensors are connected to a computer that reads the information coming from them and, depending on the correct execution of the stroke technique, generates a corresponding control signal to the electromagnetic brake device, which creates an additional brake impulse. Thus, the additional braking impulse is in direct connection with the athlete’s work, and its value depends entirely on the “stroke” technique. Between the computer and the load modules (elements) there is a feedback that allows you to accurately dose the resistance to movement of the handles of conventional oars.

The mass of the carriage with foot rests and load modules (elements) corresponds to the mass of the boat. The carriage with a seat for the athlete and the carriage with foot rests can freely move along the frame, and the seat to the front rack of the simulator pulls the rubber band with a little effort. Another tourniquet pulls the carriage with foot rests to the back of the simulator. Thus, the harnesses are stretched so as to keep this entire moving system in dynamic equilibrium during operation and to exclude the impact interaction of the moving parts with the travel stops of the carriages, as well as provide reciprocating movement of the carriages along the frame. The elastic deformation forces of the rubber bands are mutually balanced. If the total center of mass of the moving parts of the simulator is displaced from the central position, a difference in the deformation force of the rubber harnesses arises, and the resulting force will tend to return the center of mass of the moving parts to the central position. Thus, the entire system is dynamically balanced. Since in the proposed device the mass of the carriage with foot rests and loading devices is equal to the mass of the academic boat (15-17 kg), the mass-inertial and power characteristics of the simulator will correspond to the mass-inertial and power characteristics of the work in the academic boat on the water.

It is possible to simplify the simulator by removing the harnesses 8 and 9, but giving the frame a radius of curvature. In the case when the lower part of the radius of curvature will be in the center of the frame, the movable system will also come into dynamic equilibrium under the action of gravity.

Thus, on the proposed simulator, the desired technical result is achieved, which consists in improving the quality of the workout by more fully taking into account all the inertial forces arising in the system, and, as a result, reproducing the full simulation of the “stroke” with reaching the standard distance comparable to time by water.

An example of a specific implementation.

Figure 1 shows a simulator for training athletes-rowers of rowing. The athlete is placed on a seat 2 mounted on a movable carriage, which moves along the frame 1, resting on the foot stops 4, which are mounted on another movable carriage 3. On the carriage 3, load modules (elements) are also installed 7. The athlete pulls up the conditional handles An oar bis, using chain 5, transfers forces to load devices 7. A carriage with a seat attached to it with an athlete and a carriage with foot rests move in opposite directions during the “rowing”, and during preparation for the “rowing” the carriage with the seat and the foot rest is returned to its initial position. In order to keep said movable system in dynamic equilibrium without impact interaction with restrictive stops, a movable carriage with a seat pulls with a little effort a rubber tow 9 to the front strut 11 and another harness 8 pulls the carriage with the foot rests to the rear strut 10.

When working on a well-known simulator, an athlete, sitting on a movable seat, resting on fixed foot rests, pulls up the handles of conventional oars. In this case, the movable seat with the athlete moves back, and the foot stops remain motionless. The mechanical-aerodynamic loading device simulates the movement of a boat on water, taking into account only the forces transferred from the handles of the conventional oars to the loading device without taking into account the time difference in the occurrence of reactions on the foot stops and the handles of the conventional oars and resulting from this additional braking of the boat. As a result of this, and also due to the difference in mass-inertial and power characteristics of working on the simulator and in the boat, the time of best results for covering the standard distance of 2 kilometers on the simulator and in the boat on the water will be 5.35 s and 6.35 s, respectively.

When working on the proposed simulator, the athlete sits on a movable seat, abutting against movable foot stops, and at the same time pulls up the handles of conventional oars. The carriage with the seat fixed to it with the athlete and the carriage with the foot rests move in opposite directions during the “stroke”, and during the preparation for the “stroke” the carriage with the seat and the carriage with the foot rests back to the initial position. Thus, the work of the athlete on the water is completely imitated.

In the proposed device, due to the introduction of an additional movable carriage, it is possible to more fully take into account the inertial forces acting in the system, while the mass-inertial characteristics of the additional movable carriage with the foot stops and load modules installed on it will correspond to the mass-inertial characteristics of the academic boat on water, List of sources of information

1. RU No. 1802718 A3, IPC A63B 69/06, publ. March 15, 1993

2. RU No. 2153909 C1, IPC A63B 69/06, publ. 08/10/2000

3.

4. SU No. 1796227 A1, IPC A63B 69/06, publ. 02/23/1993.

Claims (2)

1. A computer-training complex, which is a simulator for training athletes-rowers, who are competing in rowing, consisting of a frame on which a carriage with a movable seat for an athlete, foot rests, conditional oar handles, a load module including an aerodynamic turbine are installed, as well as containing force and displacement sensors, characterized in that the load module further comprises an electromagnetic brake device, while the sensors are mounted on a carriage with foot stops, on the handles of conventional oars, a movable seat and a loading device, and connected to a computer that reads the information received on them and, depending on the correct technique for performing the stroke, generates a control signal supplied to the electromagnetic brake device, creating additional braking of the aerodynamic turbine. 2. The simulator according to claim 1, characterized in that the mass of the carriage with foot stops and load modules is equal to the mass of the boat.
3. The simulator according to claim 1, characterized in that it is equipped with two rubber tows, one of which pulls the seat for the athlete to the front of the simulator, and the other pulls the carriage with foot rests to the rear of the simulator, providing reciprocating movement along the frame. 4. The simulator p. 3, characterized in that the reciprocating movement of the carriages along the frame is provided due to the fact that the frame has a radius of curvature, the lower part of which is in the center of the frame.

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