WO2020046176A2

WO2020046176A2 - Ski position control system for travel of a two-wheeled vehicle over snow

Info

Publication number: WO2020046176A2
Application number: PCT/RU2019/000611
Authority: WO
Inventors: Леонид Александрович ЖЕЛОНИН
Original assignee: Леонид Александрович ЖЕЛОНИН
Priority date: 2018-08-31
Filing date: 2019-09-02
Publication date: 2020-03-05
Also published as: WO2020046176A3; RU2738397C2; RU2018131483A3; RU2018131483A

Abstract

The invention relates to devices intended for converting wheeled vehicles for travel over snow cover. A ski position control system for travel of a two-wheeled transport vehicle over snow comprises a ski body, a handle and a fastener of a ski to the first forks of a motorcycle, said fastener comprising a body and a base for rotating the ski in the vertical plane and equipped with a rocker. In contrast to the closest prior art, the rocker is configured in the form of two polygonal plates rigidly connected to one another and movably connected by one apex to the fastener base along the axis of rotation of the ski and by two apices to a front shock absorber secured on the ski body and to a rear shock absorber arranged on the fastener body of the ski respectively. The technical result is to provide control of the optimum position of the ski relative to the surface of the snow cover.

Description

Two-wheel ski position control system

vehicle in the snow

FIELD OF TECHNOLOGY

The invention relates to devices for transforming wheeled vehicles for movement on snow cover.

BACKGROUND OF THE INVENTION

The steering ski suspension is known in the art and comprises a rotary steering bipod, a two-arm tilted lever, a shock absorber, an elastic element and eyelets for attaching a shock absorber and a lever to the ski. The long arm tilt lever is located in the rear half of the ski, and the shock absorber is located in the front half of the ski. An elastic element made in the form of a coil spring is mounted on a shock absorber between the front eye and the short arm of the lever. The long lever arm is flat and fixed in two rear eyes, spaced across the width of the ski on a rigid power base. The front eye is also fixed to the power base and has several fixed positions along the longitudinal axis of the ski. [Patent for invention N ° RU2043232, publication date 09/10/1995]

The closest analogue of the claimed invention is a ski suspension for snowmobiles with at least one rotating steering shaft, containing spring means, as well as a shock absorber to provide elasticity and cushioning of relative movements between the chassis and the ski with the suspension and controlled by the steering shaft. In addition, the suspension comprises, in addition to the first shock absorber located in front of the steering spindle, a second shock absorber equipped with a progressive spiral compression spring and consisting of a piston cylinder mechanism, the rear end of which is pivotally connected to the ski at the first fixed point of the hinge and the opposite end of which is pivotally connected to the pivoting link in the second movable hinge point, and the connection is made in the form hinge, as well as on the fourth movable hinge point with a steering spindle. [Application for invention N2 W09011920, publication date 10/18/1990]

The devices known from the prior art described in the patent N2 RU2043232, as well as, for example, in the patents N9US4034820, N2RU142289, perform the functions of reducing the load on the suspension elements, damping the vertical vibrations of the front suspension of the snowmobile, neutralizing the dynamic loads of jolts and shocks acting on suspension, as well as keeping the ski in constant contact with the road, which makes it easier to drive the vehicle and is applicable for use only in snowmobiles. The steering ski suspension known from patent N2 RU2043232 reduces the load on the suspension elements and facilitates driving, which is not suitable for use in devices for transforming two-wheeled vehicles for driving on snow cover, since the central hinge does not stabilize the position of the ski. The well-known ski suspension for snowmobiles from the application N2 W09011920 solves the problems of load distribution on snowmobile skis, reduces the load on the snowmobile suspension, keeps the skis in constant contact with the road, but is also not applicable for use as a replacement for the front wheel of a two-wheeled vehicle due to different kinematics of movement skiing.

SUMMARY OF THE INVENTION

The technical problem, the solution of which the claimed invention is directed, is to increase the cross-country ability of a vehicle when driving in snow using a ski.

The technical result consists in providing control of the optimal position of the ski relative to the surface of the snow cover.

The essence of the claimed invention.

The system for monitoring the position of the ski for driving a two-wheeled vehicle in the snow comprises a ski body, a handle and a ski mount to the feathers of a motorcycle fork, comprising a body and a base with the ability to rotate the ski in a vertical plane, equipped with a beam. Unlike the closest analogue, the beam is made in the form of two polygonal plates rigidly connected to each other and movably connected by one vertex to the base mounts along the axis of rotation of the ski and two peaks with a front shock absorber mounted on the ski body and a rear shock absorber located on the ski mount housing, respectively.

The rocker arms may be further provided with recesses and / or holes to provide access to the fasteners. A rigid connection of the plates to each other can be achieved using transverse rods.

The fastening of the front shock absorber to the ski body and the rear shock absorber to the mounting body can be made in the form of a hinge. The second end of each shock absorber is fixed by means of a hinge to the transverse rods connecting the rocker plates. When the shock absorber spring is compressed, the distance between the points of their connection with the ski and attachment bodies and the rocker plates is reduced, respectively, and when moving in tension, the rod at the base of the shock absorber does not allow this distance to be increased by limiting its stroke by fixing the end of the rod in the shock absorber body. The connection points of the front shock absorber with the ski body and the rocker arm, as well as the connection point of the rocker arm with the mounting base form a triangle, similar to the triangle formed by the connection points of the rear shock absorber with the mounting body and the rocker arm, as well as the connection point of the rocker arm and the mounting base. The ratio of the heights of these triangles when the ski is horizontal, lowered from the connection points of the shock absorbers with the rocker to the distance between the connection points of the front shock absorber and the ski body and the connection of the rocker arm to the mount base, as well as between the connection points of the rear shock absorber with the mount housing and rocker arm with the mount base, can be 1: 4. This ratio of the distances between the reference points of the system provides the most optimal possible positive and negative angles of inclination of the ski, which ensures the maximum holding power of the ski in a horizontal position and a decrease in the holding force when it collides with an obstacle, namely: a positive inclination of the nose of the ski to 350 and a negative tilt to 250 Thus, when lifting the nose of the ski, the distance between the anchor points of the rear shock absorber is fixed, due to the impossibility of increasing this distance due to the physical limitation of the length of the rod, while the distance between the reference points of the front shock absorber is reduced. When lowering the nose of the ski, the distances between the anchor points of the front shock absorber are fixed due to the impossibility of increasing the distance due to the physical restriction of the length of the shock absorber rod, while the distance between the anchor points of the rear shock absorber decreases. By ensuring the maximum moment of keeping the ski in a horizontal position when the resistance changes, the holding moment decreases sharply, which increases the angle of inclination of the ski and allows you to take the optimal position to prevent the vehicle from getting stuck in the snow.

The mount can be made with the possibility of adjusting the angle of departure, the mount housing can be provided with two stiffening plates on the sides. The possibility of adjusting the angle of departure can be provided using two locking clamps mounted on stiffeners, each of which is a collapsible ring with connecting elements and a protrusion, on which are holes for attachment to stiffeners, while the stiffeners are also equipped with holes for fixing clamps. Additionally, holes for installing spacers can be made in the protrusions and stiffening plates to further fix the position of the fork feathers. The mounting body and stiffening plates contain holes for accommodating the standard axis of the vehicle wheel and can be equipped with transitional adapters for it. The fastening case can be made of polyethylene with a molecular weight of 4.5 million g / mol, the stiffening plates, fixing clamps and connecting elements can be made, for example, of duralumin, due to which the fastening has high strength, is able to withstand ultra-low temperatures without changing properties and has high torsional rigidity. The departure angle is adjusted by rearranging the fixing bolts in the corresponding holes of the clamps and stiffeners, due to which the mounting position of the ski to the feathers of the fork relative to the motorcycle fork and the departure angle, respectively, are changed. The number of holes on the stiffeners can vary depending on the required accuracy of adjusting the angle of departure. Angle adjustment the departure of the mount provides the ability to calibrate the vehicle depending on weather conditions, namely, it provides increased controllability of the vehicle when driving in snow of different quality.

In addition, the ski mount can be equipped with restrictive buffers from the front and rear shock absorbers to limit the limiting angles of the rocker arm, which increases the durability of the structure.

Side and central keels equipped with skates can be made on the lower surface of the ski casing, while the height of the central keel is greater than the height of the side keels in order to increase the maneuverability of the vehicle. The lateral keels are located along the lateral longitudinal sides of the base, and the central keel is located along the longitudinal axis of the base. Skates located on the lateral keels have a L-shaped profile. The ridge located on the central keel has a U-shaped profile and a bend in the vertical plane, made in such a way that the front of the ridge is recessed into the surface of the keel, which ensures smooth passage of possible obstacles under the snow. The difference between the height of the skate located on the central keel and the skates located on the lateral keels can be from 25 to 35 mm. The lateral surface of the ski body, the side keels and the skates located on them can be made with a radial bend with narrowing in the central part, while the side keels are inclined to a vertical plane. The inclination of the side surface of the ski body and side keels relative to the vertical plane can be from 5 to 150, while expanding the space limited by the side keels, the ability of the ski to be on the surface of the snow cover is maintained while increasing the stability of the vehicle. The radius bend of the side surface of the ski case and side keels provides a narrowing in the central part of the ski of no more than 5%, while the skates located on the side keels repeat the radius bend of the side surface of the ski and keels. When the direction of movement changes, the motorcycle tilts towards the turn, while the lateral keels slide due to the radius bend along the surface, describing a circle with a small turning radius, due to which it increases vehicle maneuverability. The keels form longitudinal tunnels on the lower surface of the ski to move the snow mass during movement. Radial bending of the side surface of the ski and the side skates provides narrowing of the tunnels in the middle part of the ski, due to which the snow is compacted in the middle part of the ski, which ensures a decrease in the ski's warmth when driving in deep snow.

The body of the ski can be made of polyethylene with a molecular weight of 4.5 million g / mol. This provides increased wear resistance of the ski and improves glide due to the preservation of the strength and elasticity of the material at low temperatures up to -200 ° C. Skates can be made of sheet steel with high-frequency hardening of the working edge, the fastening of the skates to the base of the ski can be made detachable, for example, using bolts, in order to ensure the possibility of their replacement.

Thus, the inventive system for controlling the position of the ski for driving a two-wheeled vehicle in the snow is characterized by new, previously unknown from available sources of information, essential features consisting in the rocker arm in the form of two polygonal plates rigidly connected to each other and movably connected by one vertex to the base of the mount along the axis of rotation of the ski and two peaks with a front shock absorber mounted on the ski case and a rear shock absorber located on the mount skiing, respectively. The use of a rocking arm ensures the achievement of a technical result for ensuring control of the optimum position of the ski surface relative to the surface of the snow cover and solves the problem of increasing the cross-country ability of the vehicle when driving in the snow using skiing, which allows us to conclude that the claimed invention meets the patentability criteria of “novelty” and “inventive step” ".

The claimed invention can be made by known methods from known materials, which ensures its compliance with the patentability criterion of "industrial applicability".

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 - side view of the ski; FIG. 2 - view of the ski with a positive inclination of the body;

FIG. 3 - view of the ski with a negative inclination of the body.

BEST MODE FOR CARRYING OUT THE INVENTION

The system for monitoring the position of the ski for driving a two-wheeled vehicle in the snow comprises a ski housing 1, a handle 2 and a ski mount 3 to the feathers of a motorcycle fork, comprising a housing 4, a base 5 with the ability to rotate the ski in a vertical plane and stiffening plates 6 provided with fixing clamps 7, equipped with a beam 8. The beam 8 is made in the form of two polygonal plates 9, rigidly connected to each other and movably connected by one vertex with the base 5 of the fastening 3 along the axis of rotation of the ski 13 and two vertices with the front a ortizatorom 10 attached to the ski body 1 and the rear shock absorber 11 is located on the housing 4, fastening skis 3 respectively. The base 5 of the fastening 3 is equipped with restrictive buffers 12.

The principle of operation of the claimed invention is as follows.

The ski for the movement of a two-wheeled vehicle in the snow is installed in place of the front wheel of the two-wheeled vehicle, for which the front wheel is removed, the brake caliper and hydraulic line are disconnected, the protective shields (not shown in the drawings) are removed from the feathers of the fork. Then install adapter adapters (not shown in the drawings) on the stiffener plates 6, set the ski in place of the wheel, placing the standard wheel axis in the holes of the stiffener plates 6 (not shown in the drawings), fix the fixing clamps 7 on the feathers of the fork to the lowest position and fix with the help of fixing bolts, after which the protective shields of the feathers of the fork are installed in a regular place (not shown in the drawings).

When the vehicle is moving and the inclination of the ski casing 1 in the negative direction (the nose of the ski goes down), the front shock absorber 10 remains in a static position, since it has a tensile action at this moment, while the transmission of power through the rocker 8 to the rear shock absorber 10. The moment of resistance of the shock absorbers is maximum in the horizontal position of the ski and decreases with increasing angle of inclination of the ski in the positive or negative direction, respectively. When immersed in deep snow, resistance to the front of the ski case 1, due to which the angle of inclination of the ski is reduced and held until the resistance begins to decrease. As the resistance decreases in the front of the ski, it begins to tend to take a horizontal position and hold it after surfacing. The maximum ski angle is limited by contacting the ski mount 3 with the restriction buffers 12.

Claims

Claim

1. A system for monitoring the position of the ski for driving a two-wheeled vehicle in the snow, including a ski body, a handle and a ski mount to the feathers of a motorcycle fork, comprising a housing and a base with the ability to rotate the ski in a vertical plane, equipped with a beam, characterized in that the beam is made in the form of two polygonal plates rigidly connected to each other and movably connected by one vertex with a mounting base along the axis of rotation of the ski and two vertices with a front shock absorber mounted on the body skis and a rear shock absorber located on the mounting housing skiing, respectively.

2. The system according to claim 1, characterized in that the ratio of the distances between the attachment points of the shock absorbers and the rocker arm and the attachment points of the shock absorbers to the ski body is such that the maximum positive inclination of the nose of the ski is up to 350 and a negative inclination of up to 250.

3. The system according to claim 1, characterized in that the base of the ski mount is equipped with restrictive buffers.