UA64973A - Oar for boat racing - Google Patents

Abstract

An oar for boat racing contains the pole and the paddle. The pole is equipped with the handle attached to the rowlock. The paddle is designed as the concave rectangle attached to the pole in its middle and upper part with the aid of the swivel. The latter comprises the eye with the axis of the swivel adjustable according to the inclination angle of the pole and the tail. The paddle is spring-loaded to the tail and the eye enabling the limited rotation around the horizontal and the vertical axes.

Description

The intended invention relates to sports and watercraft, in particular to devices for rowing of surface sports vessels and improvement of the working conditions of rowers.

The oar of a device for training rowers-kayakers is known, which is made in the form of a rod with sharp ends, and the rod - in the form of a tube, on which a curved spring is fixed, and the sharp ends of the rod are spring-loaded to simulate interaction with ice /auto.sv. USSR Me1163870, АЕ3В69/06, Bul. Me24, 1983/.

The disadvantage of this paddle is that it is only suitable for kayakers and therefore cannot be used for academics and canoes, firstly, and secondly, it is designed only for devices that move on ice.

A known device for training rowers in a swimming pool, which includes two side channels to accommodate two oars, and these are connected to a third channel, on the water of which is placed a watercraft, connected to the side of the pool by a flexible member and equipped with a fin in the form of a plate attached to of a moving seat of a watercraft / avt.sv.

USSR Mo1678399, A63869/08, Bul. Me35, 19917,

The disadvantage of this device is that its watercraft is adapted to a special pool and its oars are also adapted by design not to a real watercraft, but to its simulator. Therefore, such oars are unsuitable for use on sports vessels.

A well-known device for training oarsmen, which has a horizontal guide for the oar blade and a magnetic block interacting with a ferromagnetic plate fixed on the oar blade /auto. St. USSR

Me1174048. АЕ3В69/06. Bul. Me22, 19917.

The disadvantage of this analogue is that it is not a whole oar, but only its blade, and this blade cannot be used for various types of sports rowing, even as training simulators, especially since this oar is unsuitable for real rowing on water.

Also known is the loading unit of the device for training oarsmen, which has a guide and magnetic block similar to the previous device, but of a different design and an oar with a ferromagnetic plate / auto. St. USSR

Me1650170, A63869/06, Bul. Me19, 19917,

The disadvantage of this unit is similar to the previous one - it is not very effective even for training rowers, and it is generally unsuitable for watercraft.

A well-known device for rowing, which includes a mock-up of a watercraft mounted on wheels with a movable seat, knuckles and oars, made in the form of aerofoils, mounted on their stems in a hinged manner, and each wing, which imitates the blade of an oar, is made in the form of a rim with a strong fabric stretched over it / author St. USSR

Mo1694169. A63869/06. Bul. Me 44, 19917.

The disadvantage of this original device is that only oars with airfoils could be used on watercraft, but if there is a more reliable support for oars - water; it is not rational to use aerofoils.

The oar for academic boats is the closest in terms of technical substance to the proposed one, which has a rod with a handle and a blade with a neck, which is connected to the rod, as well as a heel with a cuff on the rod, an edging on the blade / in the book. According to the general editorship of Professor S.K.Fomin, Rowing sport, "Higher School", Kyiv-1971, p.245/.

The disadvantage of the prototype is that this oar has the shape of a blade and is attached to the rod in such a way that it causes, firstly, the need to immerse it in the water for a long time and take it out of the water, and this reduces the speed of the rower’s movement, because in each rowing cycle such actions with an oar are performed both after wiring it and after drifting. Secondly, the deep immersion of the blade in the water increases the physical load on the rower and leads to increased fatigue.

If this blade is not buried in the water up to its neck in order to facilitate the wiring of the oar, then the blade will not fully rest on the water and this will also have a negative effect on rowing, although the speed of movements can be increased in this way, and the load on the rower can be reduced. but it is impossible to achieve a sufficient speed of the ship with such errors in this way. It is known that the blade of an oar during effective rowing should not sink deeply into the mass of water, but should work along the entire length of the wiring as high as possible in the water, in its very surface, but so that it is completely immersed and rests on the water along the entire plane. This is impossible to achieve with a prototype oar. Or the blade sinks in completely, and then it is long and difficult to raise and lower it. Or deepening is carried out to the neck of the blade and then its full support on the water is not achieved. In both cases, rowing efficiency decreases. These shortcomings arise precisely because the shape of the blade of the oar approaches a triangle and it forms a straight line with the shaft connecting it with the oarsman, who is located much higher above the water. In addition, the oars of academic boats are very long and, although they are light, but when resting on the cotters and heels and the cuff, they create significant friction at the point of support, and this slows down the rotation of the oars around their longitudinal axis during skidding, when it is necessary to put the blades in horizontal position. These movements of the rower also increase the difficulty of rowing and its physical load.

The invention is based on the task, taking into account all the positive and negative features of the oar prototype of an academic boat, to create such an oar that would make it possible to get rid of the shortcomings of the prototype and at the same time ensure the convenience of using oars on academic boats and facilitate their use by avoiding the complexity of rowing and his physical load. This was supposed to be achieved, firstly, by changing the shape of the oar blade. Secondly, by its hinged attachment to the shaft of the oar with a suitable swivel, so that it is possible to place the blade parallel to the surface of the water at the optimal depth and thereby facilitate its use. And, thirdly, to create an opportunity to orient the blade relative to the boat along the entire length of the wiring in the most advantageous position for rowing. Finally, to facilitate the actions of the oarsman when setting the blades in a horizontal position at each drift of the oars to avoid their sailiness.

The task is solved by the fact that in the oar of an academic boat, the blade of which has a certain shape, and the handle is made in the form of a rod with a handle with the possibility of installing it in the boat's cockpit, according to the proposed invention, the blade of the oar is made in the shape of a curved rectangle, the middle-upper part of which is attached to the shaft of the handle with the help of a swivel, which includes an eyelet with the axis of the hinged installation in it, adjustable by the angle of inclination of the handle and the shank of the blade, which is installed and braced to the shank and to the indicated eyelet with the possibility of limited rotation around the horizontal and vertical axes with the help of a spring and a spring .

The technical and consumer results achieved thanks to the use of all the distinguishing features of the offered oar are that a more optimal shape of the oar blade has been found and implemented and it is hinged with the help of a swivel attached to its handle in such a way and at such an adjustable angle of inclination that provides an optimal level the deepening of the blade in the water relative to the boat and the surface of the water to improve support on the water during the entire wiring and drifting of the oar - and thereby to facilitate the actions of the rower and reduce his fatigue.

The essence of what is proposed is explained by the drawing, where Fig. 1 shows oars when rowing on academic vessels, front view; in Fig. 2 - the right oar, enlarged, rear view; in Fig. 3 - the same thing, enlarged and shown: a - from the back, b - from the side when wiring the oar, c - when the oar is drifting, d - when the oar blade is lowered into the water; in Fig. 4 - the position of the blade relative to the oar in the initial position during wiring, schematically; in Fig. 5 - the same, with the final position of the wiring; in fig. b - a comparative diagram of the movement of oars relative to the direction of movement of the vessel:

A - when using the oar of the prototype, B - when using the proposed blade /dotted at the end of the wiring and drift of the oar/; Fig. 7 - comparison of the height of lifting oars when using prototype blades /dotted/ and proposed /shaded/, schematically; in Fig. 8 - the swivel of the oar blade: a - rear view, 6 - side view, c - side view when the oar is drifting after lifting it from the water, fragmentary.

In particular, the oar of an academic sports vessel has a blade, the body 1 of which is hinged with the help of a swivel 2 to the rod of the handle of the oar, which is installed in the hook 4 and has a handle 5.

The body of the oar blade 1 can have the same dimensions as the prototype. But the shape of the blade is different - rectangular and it is attached to the rod of the holder C with the help of a swivel 2 /fig. 2, 3, 8/. The swivel 2 includes an eye 6, to which the rod C of the oar is attached to the axis 7, and which has holes 8 and a corresponding hole in the rod for the fixing screw 9 to adjust the angle of inclination of the rod of the oar to its blade. A shank 10 is attached to the eye 6 with the help of a hinge 11 of limited rotation, for which it has an eye 12 with limiting stops 13. A spring 14 is attached to the stop 13, which rests on the shank 10 with its working end in the form of an arc. On this shank, it is hinged using its two lugs 15 and 16 are attached to the oar blade, i.e. its body 1, which is stabilized to the shank and lug 6 by a spring 18 in the form of an elastic plate attached to the adjusting screw 17. The screw 17 is passed through the slot 19 of the spring 18 and is screwed into the shank 10. Thus, the body of the blade has the ability to tilt /from a vertical position to almost horizontal - thanks to the hinged lugs 15 and 16/ and is limited /when resting on the stop 13/ to rotate around the vertical axis - shank 10. The swivel 2 is attached to the body 1 from above, not in the middle, but in such a way that the remote part of the body is longer than its closer half /fig. 3, 4, 5/ and the ratio of the sizes of these parts is adjusted using the screw 17 and the slot 19, and the lugs 15 and 16 have rows of vertical channels /not shown/ for the passage of the shank 10. For this adjustment, it has a locking nut 20 /fig. 3, 4, 5, 8/. The drawing of the boat shows - 21, and the water level - 22.

Oars with the proposed blades are used in the same way as conventional oars presented in the prototype, but rowing is lighter, more comfortable, and most importantly, more efficient. This was achieved, first of all, by the fact that it became possible to reduce the length of the oar without reducing the force that moves the vessel /fig. 6 - comparison of A and B/. This possibility is provided by the fact that during active movement in the water, which gives an impetus to the movement of the vessel, the body 1 rotates around its axis-tail 10 and all the time automatically turns and stands in the direction perpendicular to the movement of the vessel. This orientation of the oar blade is set by the oarsman, who, with proper masterful rowing, should not row the oar slowly and evenly, but quickly with acceleration to the end of the row. Due to this acceleration, the longer part of the body 1 /blade/, which is outside the arc of the oar wiring, moves towards the wiring at a lower speed than its inner part, i.e. it lags behind. This orients the blade and keeps it in a favorable position for capturing water and resting on it.

Second, the rower exerts less physical effort with each stroke of the oar. This is ensured by the fact that the blade of the oar, body 1, sinks less into the water and less effort is required when immersing it in the water and pulling it out of the water. For this purpose, the oar is "broken" at the point of connection of its rod Z with the body 1, at an angle that is adjusted as a precaution by the screw 9, by installing it according to the weight of the rower /or the ship's crew/ in the corresponding hole 8 so that the body in the initial position of the wiring is would be directed horizontally parallel to the surface of the water /fig.Za, two/. This is also illustrated in Fig. 1, 2 and especially in Fig. 7, where it is demonstrated by two vertical arrows and the difference between their lengths when comparing 1-B and 1-A oars of the proposed (shaded)/ and prototype.

Thirdly, the ease of rowing is provided by the fact that there is no need to perform an arc-shaped movement of "winding" the oar when sliding it after each wiring. In the prototype, this is a necessary, inevitable arc-shaped movement with two hands - the return of the bones of the hands on itself and the turning of the oars in the cotters around their long axis so that its blades move horizontally in the direction of the vessel's movement when drifting and are not slowed down by the air when moving forward (back relative to rower). In the proposed one, these "winding" of the oars are performed by springs 14 installed on swivels 2 /fig. 3, 6, 8/, which simplifies rowing skills and significantly lightens the rower's physical load. After completing the wiring, the rower moves the handle 5 down and lifts the body of the paddle out of the water in an arc-like motion. At the same time, the housing is released and the spring 14, which during the wiring was moved back and twisted by the water pressure on the oar blade, immediately activates, and this pressure is removed at the same time. Body 1 from a vertical position becomes horizontal, thanks to the stop 13, a little short of reaching it /fig. 3-c, 2/. This ensures the removal of air resistance and facilitates drifting of the oar and its maintenance by the air flow /fig. 3, 8-c/, which also guarantees easier rowing. The deepening of the oar after drifting does not require any effort from the rower, on the contrary, it gives him the opportunity to relax, lower the blades into the water and they will turn to the working position under the pressure of the water, which will drown it and return it to the working vertical position / fig. 3-c, d , 8-v/.

Finally, due to the possibility of reducing the length of the oars, it is possible to achieve a reduction in the load during each rowing and drifting of the oars and the possibility of increasing the length of the rowing, which in each cycle of rowing is the basis of the ship's movement /fig. 6-B, dotted line/.

This is another factor in increasing the efficiency of the rower's actions when rowing. In addition, there is an opportunity to improve the quality and reliability of paddles 4, because there is a need to rotate the oars around their longitudinal axis when moving from rowing to skidding and vice versa.

Thus, it is possible to reduce the rower's load and give him the opportunity to save strength and take a better place in the competition.

We hope that oars with the proposed blades will be widely distributed not only among rowing enthusiasts, but also among high-level specialists. Moreover, precisely for victory in difficult conditions of sports competitions, in which even the smallest improvements have a certain importance, this proposed design of the oar can also be useful.

Alain V. V

Ash en tt Foot

Fi 0000 2 sn Erni «4 about NI INNO NN;

SSheve

Fig. hu Zrya rya, tiv - aut suchunav at 7 "There are 4 ket iya dit, Payne Z BM so veni Z DY nn sne zi z vant KI: I y i YASCHINYA sha

ANT Ya - Yan yar shi ly ny She / av u ddlynainninii ks annanini B to yan g Fig 0 b ve --3 158; i / ry i

SHO SHIN

Fig

IS

I lk mi" breath e. Fig. 5 still / g and Ach se va -. ke : ; - with | z-sna district;

And dk and not KI TYA niIyshuuatsra baths

GA r ry R ah kosh ee. shk shk E xx 21 ml, as in and ХК

Be She shi Shk - - Fig.

Mk ee NOW question

ZEesv V e, - ning ivnarechn Dema from the plexus chew on Shin NI Shluche D pe

Fig. 7 and 3867 Z g VA A a» In ad a Shblysh, r i NN VIT TO yak Pe yary DYU it

SAKE uv pe a 4 a

Fig. 8

Claims (1)

An oar of an academic boat, the blade of which has a handle made in the form of a rod with a handle with the possibility of installing it in the bow of the boat, which is distinguished by the fact that the blade of the oar is made in the form of a concave rectangle, the middle-upper part of which is attached to the rod of the handle by means of a swivel, which includes eyelet with the axis of the hinged installation in it, adjustable by the angle of inclination of the handle rod and blade shank, which is installed and spring-loaded to the shank and to the eyelet with the help of a spring and a spring with the possibility of limited rotation around the horizontal and vertical axes.