RU2336922C1 - Arrangement for downhill skier training - Google Patents

Abstract

FIELD: sport.

SUBSTANCE: invention concerns sport, particularly it concerns devices for maintenance of downhill skiers training in conditions beyond hills and without blanket of snow. Invention is directed to effectiveness increase of sportsmen training process. Device is implemented in the form of unconnected skateboards for left and right feet with fixation for boots and three roller assemblies at each scateboard, two of which are fixed to board ends inflexibly and one in its center - spring-mounted, at that axes of central assembly are shorter then end axles. Each roller assembly consists of two wheels fixed on axes ends. Axes are located perpendicularly of longitudinal axis of board symmetry, forced on bearings and by means of column are fixed to bottom surface of board. Each wheel is implemented as assembled in the form of jointed discs, in grooves of which there are located straining rollers of torus-like form with external diameter more then discs diameter and which are rotatable in groove due to side forces.

EFFECT: effectiveness increase of sportsmen training process.

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Description

The invention relates to sports, in particular to devices for training skiers (hereinafter athletes) in conditions outside the mountains and in the absence of snow cover.

The prior art is known from a device for training athletes (hereinafter, ski simulator) (1. US Patent No. 3462141, 1969), which consists in the fact that when simulating the passage of turns, the athlete moves the skis left and right using a cable stretched perpendicular to the length of the skis. The athlete maintains balance with the help of sticks resting on the floor of the room in which the training is carried out. The known device imitates the movement of the athlete’s legs to a certain extent, however, the nature of the training loads differs significantly from their nature in real skiing, since there are no forces acting directly on the athlete’s body, as is the case with centrifugal forces arising from bends. Because of this, the effectiveness of training using a known device is low.

A device for training athletes is also known that allows simulating cornering by applying force to the ski simulators to the center of the simulated rotation, the magnitude of the generated force is directly dependent on the canting angle of the ski simulators, and the law of variation of the magnitude of the generated force is selected in accordance with the law of change the centrifugal force acting on the athlete, depending on the pitching angle of the skis (2. RF Patent No. 2233684, 2004).

In the well-known solution, the simulation of the turns is carried out by the athlete in static, while in real skating all turns are carried out in the process of movement of the athlete. Thus, a disadvantage of the known solution is also the low efficiency of training due to the mismatch of the nature of the efforts developed by the athlete in the conditions of training, the efforts that arise in the real process of riding.

It is also known (3. Remizov. Skiing: lessons in the snow. - M .: Profizdat, 1998. - 272s., Ill.) That when descending along a mountain road, when turns are inevitable, the skier is forced to use such movement techniques as “rejection” (see (3) on page 160) or “slipping” (see (3) on page 169), which is not modeled using the above solutions.

The technical result, to which the claimed invention is directed, is to increase the effectiveness of training in the absence of snow cover.

The specified technical result is achieved, according to the invention, by riding on a hard road surface on a device that simulates the movement of skis (ski simulator) and allows you to reproduce the movements of a skier when skiing in real conditions.

To implement the proposed method, a ski simulator is proposed, the prior art of which is known from the device (4. RF Patent No. 2060047, 1996), representing a roller board consisting of two supporting platforms for the legs, each of which has a roller unit fixed to its lower surface with located in it at least on one axial line by two rollers. Each of the platforms is connected to one end of the holding platform at a distance from each other of the support element by means of a rotation mechanism with the possibility of at least incomplete rotation relative to the other platform and the spacer element. The rotation mechanism is made in the form of a vertical axis. Each roller unit is equipped with an elastic suspension located therein to provide rotation of the platform relative to the roller unit in a vertical plane.

A disadvantage of the known device is its low efficiency in the training process, since the known design does not provide ski conditions for the actual ski conditions of skiers.

These shortcomings are eliminated by the claimed ski simulator for training skiers, consisting of unrelated roller boards for the left and right legs with a mount for boots and three roller assemblies on each roller board, two of which are fixed at the ends of the board rigidly, and one in its center - spring-loaded, while the axis of the central node is shorter than the extreme axes, each roller assembly consists of two wheels fixed along the edges of the axes, the axes are perpendicular to the longitudinal axis of symmetry of the board, mounted on bearings and with the help of vertical rods through bearings, they are attached to the bottom surface of the board, each wheel being made integral in the form of articulated disks, in the groove of which are deformable rollers of a toroid shape with an external diameter larger than the diameter of the disks and which are able to rotate into the groove from lateral forces, i.e. . not coinciding with the axis of symmetry of the board.

The invention is illustrated by drawings, where in Fig.1 shows a side view of the device; figure 2 is a bottom view; figure 3 is a side view of a roller unit mounted on the end of the board; figure 4 is a side view of a roller unit mounted in the center of the board; figure 5 is a section along aa in figure 3; figure 6 is a section along BB in figure 4; Fig.7 is a section along bb in Fig.4; on Fig - view of the device in the projection "Dimetry".

The ski simulator is made in the form of boards 1 with a mount for boots (not shown) and three roller assemblies, two of which 2 are fixed at the ends of the board 1 rigidly, and one 3 in the center of the board 1 is spring-loaded (see figures 1, 2, 5 , 6, 8). The length of the axis 4 of the central node 3 is shorter than the length of the axes 5 of the extreme nodes (see FIGS. 5, 6). Each roller assembly 2, 3 consists of two wheels 6 (see Fig. 2, 8), fixed along the edges of the axles 4, 5, which are mounted on bearings 7 (see Fig. 5, 6). The axis with the help of vertical rods 8, 9 are attached to the bottom surface of the board 1 (see figure 3, 4). To ensure the perpendicularity of the axis 4 of the longitudinal axis of symmetry of the board 1, the cross section of the vertical rod 9 is made in the form of a structure 10 (see Fig.7). Each wheel 6 is made integral in the form of articulated disks 11 (see figure 5). On the periphery, i.e. grooves 12 are made at the edges of the disks 11, in which deformable rollers 13 are toroidal with an outer diameter D1 greater than the diameter D2 of the disks 11 (see Figs. 5, 6). To regulate lateral forces, the disks are crimped by nuts 14 (see Figs. 3, 4); to ensure a fixed degree of compression, a washer 15 made of elastic material is installed between the disks (see Fig. 5).

The invention is as follows.

An athlete standing on a ski simulator is moved over the surface of a hard road surface, for example, asphalted with a cable and a tugboat, for example, a car. For safety reasons, a safety link is provided in the cable, which, when an athlete falls, automatically breaks the cable. The towing speed in a peculiar way models the slope of the track (the higher the speed, the greater the slope and vice versa). In the process of towing an athlete, armed with ski poles, makes all the movements characteristic of the descent from the mountains in real conditions: movement with turns; slipping; plow braking; carving, marriage, etc. (see / 3 /). To provide conditions for performing such types of movement in tow, a device is provided that ensures, regardless of the speed of the tug and the athlete, a constant, pre-set tension force of the cable, which brings skiing simulator closer to real skiing conditions.

To implement such methods of movement, a ski simulator is made in the form of non-interconnected roller boards for left and right legs with a mount for boots and three roller assemblies on each roller board, two of which are fixed at the ends of the board rigidly, and one in its center, those. under the athlete’s foot, it is spring-loaded, which, when edged, allows you to bend the ski more under the influence of both gravity and centrifugal inertia on the athlete’s weight arising from bends. The length of the axis of the central node is less (shorter) than the length of the extreme ones, which allows you to simulate the shape in terms of a real ski: the nose and back of the ski are wider than its middle part. This ratio of axle lengths allows for the athlete's curvilinear movement when trimming skis.

Each roller unit consists of two wheels fixed at the edges of the axles, which are seated on the bearings, which allows them to rotate freely from the towing force, which coincides in direction with the longitudinal axis of symmetry of the board, because the axes are perpendicular to the axis of the board. The axles are attached to the bottom surface of the board using vertical rods through bearings. Each wheel is made integral in the form of articulated discs. On the periphery of the disks, grooves are made in which deformable rollers of a toroidal shape with an outer diameter larger than the diameter of the disks are located. These rollers are capable of turning in the groove from lateral forces, i.e. not coinciding with the axis of symmetry of the board. To adjust the lateral forces at which the rollers rotate (in real conditions this will correspond to the conditions when the translational movement is accompanied by “slipping”), the discs are crimped with nuts, and a washer made of elastic material is installed between the discs to ensure a fixed degree of compression. Before starting training for beginners, an experienced athlete, on the basis of his skills, determines the degree of compression of the rollers himself (similar to how the tuner tunes a musical instrument). The presence of rollers allows you to simulate the movement of skis during their lateral movement (slipping, carving, discarding, etc.), which is more than 90% of the total time on the slopes / 3 /.

Claims (1)

A device for training skiers made in the form of skis, characterized in that the skis are made in the form of unrelated roller boards for the left and right legs with a mount for boots and three roller assemblies on each roller board, two of which are fixed at the ends of the board rigidly and one in its center is spring-loaded, while the axis of the central assembly is shorter than the extreme axes, each roller assembly consists of two wheels fixed along the axes, the axes are perpendicular to the longitudinal axis of symmetry of the board, mounted on bearings ki and with the help of vertical rods are attached to the bottom surface of the board, each wheel being made integral in the form of articulated disks, in the groove of which are deformable rollers of toroidal shape with an outer diameter larger than the diameter of the disks and which are able to rotate into the groove from lateral forces.

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