RU2229998C1 - Vehicle support-and-running member - Google Patents

Abstract

FIELD: transport engineering; cross-country vehicle propulsion unit. SUBSTANCE: proposed support-and-running member includes cylinder with screw member arranged on its outer surface. Screw member consists of separate parts, and slots are made in cylinder for radial displacement of parts of screw member relative to longitudinal axis of cylinder. Flexible coating can be applied to outer surface of cylinder free from slots. Flexible members can be secured on separate parts of screw member on surfaces in contact with road. As a result, possibility is provided for moving both off the road and along road without damaging the pavement. EFFECT: increased maneuverability of vehicle, its running speed both off the road and along and survivability in case of failure of part of support-and-running member. 3 cl, 4 dwg

Description

The invention relates to transport machinery, in particular to supporting and navigating elements of cross-country ability.

Known wheeled support and running elements of cross-country ability, containing a rim and a hub with radial grooves made on the side surface, in which flat spiral elastic spokes are installed at one end, the other end of each of which is pivotally fixed to the inner surface of the rim, and the radial grooves are made with a closed the contour and floating axes are placed in them, which are fixed at the ends of flat spiral elastic spokes (SU 1177178).

The disadvantage of this device is the limited width of the rim, the complexity of the design due to the many joints in the wheel for each spoke.

It is known a wheel containing a pair of hubs and an elastic rim in the form of a spring, the turns of which are fixed on the hubs; the spring is made of a fusiform shape with tightly adjacent coils having the possibility of free movement relative to each other, while the coils with a minimum diameter are made at the ends of the spring (RU 2121927).

This wheel is more effective in comparison with the analogue described above in conditions of significant irregularities in the path of movement, however, any wheeled supporting-running elements are significantly inferior in respect to caterpillar patency.

In particular, vehicle support elements are known, including a caterpillar trolley mounted on a drive axle of a motor-transmission unit of a wheeled vehicle and consisting of two caterpillar tracks of a balancing type. At the same time, wheels of a wheeled vehicle that has undergone conversion are used as road wheels. The alignment of the balancers with the middle driving track rollers-wheels is ensured by spacer rollers drawn between the track rollers-wheels. Spacer rollers also provide transmission of torque from the middle driving support roller-wheel to the extreme support roller-wheels, unloading the bearings of the hubs of the extreme support roller-wheels and tensioning the tracks (RU 2196068).

However, in some cases, an even higher adhesion of the support elements with the ground is necessary.

This problem is solved by the well-known supporting-running elements, including a cylinder with a screw element placed on its outer surface (GB 2300842 A).

This technical solution is taken as a prototype of the present invention.

The supporting-and-running elements rotate around their longitudinal axes, the screws cut into the ground and provide an extremely large grip with it; accordingly, the maneuverability of a vehicle equipped with screw support elements is very significant.

However, this device has a number of significant disadvantages.

First of all, it should be noted that it is intended mainly for moving off-road. In the case of movement on the road, the road surface is destroyed by a screw. Thus, the scope of use of the prototype is very limited. It should also be noted that the vehicle can only move in the direction of the longitudinal axis of the cylinders with screw elements, which leads to its very low maneuverability. Therefore, the vehicle has to be transported on roads on special platforms. The intrinsic speed of the known supporting-running element is in any case small. If there is a need to move off-road, but on dense, stable soil, the device moves at the same low speed as on loose, unstable. It should also be noted that in the event of failure of one of the two cylinders with screw elements, the vehicle loses the ability to move in a straight line and can only move in a circle, which leads to its low survivability.

The present invention is based on the solution of the problem of ensuring the possibility of moving the vehicle both off-road and on the road surface, without causing the latter significant harm; the problem of increasing the vehicle’s maneuverability, its speed on a stable ground or road, and survivability in the event of failure of the parts of the supporting-running parts are also solved.

According to the invention, this problem is solved due to the fact that in the supporting-running element of the vehicle, which includes a cylinder with a screw element located on its outer surface, the latter is made of separate parts, and in the cylinder there are slots in which with the possibility of radial movement relative to the longitudinal axis cylinder parts of the screw element are placed; on the outer surface of the cylinder, free from slits, an elastic coating can be strengthened; on separate parts of the screw element on the surfaces in contact with the road, elastic elements can be strengthened.

The applicant has not identified sources containing information on technical solutions identical to the present invention, which allows us to conclude that it meets the criterion of “novelty”.

The implementation of the distinguishing features of the invention leads to important new properties of the object (technical result): the screws are mounted flush with the outer surface of the cylinder, so the supporting-travel element and, accordingly, the vehicle can move both in the axial direction when the screw element is pulled out of the cylinder, and in the direction perpendicular axial, with a screw element inserted into the cylinder. Thus, to change the direction by 90 °, it is not necessary to perform a turn in an arc: this change is carried out from the spot; when moving a vehicle on dense soil or road, the screw element is recessed and the cylinders roll like ordinary smooth rollers, the speed increases significantly; while the screw practically does not damage the road surface, and if elastic elements, for example of reinforced rubber, are fixed on the parts of the screw elements in contact with the road and on the outer surface of the cylinder, the possibility of damage to the road surface is no more than for a wheeled vehicle; if one of the supporting-running elements fails, then the movement in the direction perpendicular to the axial axis can be carried out with the help of another supporting-moving element, which leads to a significant increase in the survivability of the vehicle, as it can quickly leave the danger zone itself where the damage occurred .

The applicant has not found any sources of information containing information about the impact of the claimed distinctive features on the technical result achieved as a result of their implementation. This, according to the applicant, indicates that this technical solution meets the criterion of "inventive step".

The invention is illustrated by drawings:

figure 1 is a bottom view of the vehicle in a position where the parts of the screw element are extended relative to the outer side surface of the cylinder;

figure 2 - the same part of the screw element is inserted into the cylinder flush with its lateral outer surface;

figure 3 - section I-I in figure 1, on an enlarged scale, the dotted line shows the position when the parts of the screw element are inserted into the cylinder;

4 is a section II-II in figure 2, on an enlarged scale, the dotted line shows the position when the screw elements are extended.

Vehicle 1 includes, in a specific example, two support elements, the longitudinal axes of which are parallel to each other. Each supporting-running element contains a cylinder 2 with a screw element 3 placed on its outer surface; the cylinders with the help of the axles 4 are placed in the frame of the vehicle 1 and are driven by a drive (not shown). In particular, it is assumed that the rotation of the cylinders is obtained from an internal combustion engine of a sufficiently high power comparable to the engine power of a tracked or powerful wheeled vehicle. The screw element 3 is made of separate parts 5, which are radially movable in the slots 6 made in the cylinder 2. The parts of the screw element are moved by means of a hydraulic actuator 7. The drive can be another one of the widely known ones: electric, mechanical, etc. d. On the outer surface of the cylinder free of slots 6, an elastic coating 8 is reinforced, in a specific example made of reinforced rubber; on parts 5 of the screw element on the surfaces in contact with the road, elastic elements 9 are reinforced, also made of reinforced rubber.

The device operates as follows.

To move in difficult terrain, parts 5 of the screw element are advanced using the hydraulic actuator 7 to the position of figure 1. The cylinders 2 rotate with their drive in opposite directions, the screw elements are embedded in the ground, and the vehicle moves in a direction along the longitudinal axes of the cylinders. If it is necessary to turn along a certain arc, one of the cylinders is stopped and fixed, and the other cylinder, rotating, rotates the vehicle in a certain space along a certain trajectory. If necessary, reverse the movement of the vehicle (reverse) change the direction of rotation of the cylinders.

For a sharp change in the axial direction of movement of the vehicle in the direction perpendicular to the longitudinal axes of the cylinders, parts of the screw elements are brought into the position of FIG. 2. Then both cylinders rotate in the same direction. The vehicle will move almost from its place; for such a change in direction of movement does not require any additional space for maneuver.

Movement is also possible in the event of the failure of one of the supporting-running elements.

For quick movement on dense, stable soil, asphalt, concrete, the position of FIG. 2 is also used. In this case, the adhesion of the supporting-traveling element with the soil will be significantly less than when moving in the axial direction, that is, the cylinders will work like rollers, but the speed of movement increases several times.

The device can be manufactured using conventional factory equipment and known structural materials, which determines the compliance of the invention with the criterion of “industrial applicability”.

Claims (3)

1. The supporting-running element of the vehicle, comprising a cylinder with a screw element located on its outer surface, characterized in that the screw element is made of separate parts, and slots are made in the cylinder, in which parts of the screw are placed with the possibility of radial movement relative to the longitudinal axis of the cylinder item. 2. The supporting element according to claim 1 or 2, characterized in that on the outer surface of the cylinder, free of slots, an elastic coating is strengthened. 3. The supporting-running element according to claim 1, characterized in that elastic elements are strengthened on separate parts of the screw element on surfaces in contact with the road.

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