SU757374A1 - High cross-country ability vehicle - Google Patents

Description

The invention relates to roadless vehicles, in particular to all-terrain vehicles, providing movement through the snow, swamp and other weakly bearing soils.

A vehicle equipped with wheel propellers is known, which on their disks have several retractable telescopic sleeves equipped with mechanisms for their axial movement [1].

When moving along weakly bearing soils, such wheels increase their bearing surface by changing the total length of telescopic sleeves and thus adapt to the soils with different bearing capacity.

The disadvantage of such a vehicle is the use of wheels as enlargers, which, compared with caterpillars or helical rotors, have an insignificant bearing surface, which excludes its use in wetland or soft snow conditions.

The closest to the invention to the technical essence and the achieved result is a vehicle of high traffic, containing rotor2

screw propellers, which, with their ends, are mounted in the supports under his body and connected to the transmission [2].

This vehicle has the ability to move through the swamps, ₅ dirt, off-road, but it does not provide means of adaptation to soils with different bearing capacity, which impairs permeability and increases energy costs.

The purpose of the invention is to increase the passage of the bridge by adapting propulsion to soils with different bearing capacity by changing the supporting surface.

This goal is achieved by the fact that in a vehicle containing rotary-screw propellers, which with their ¹ ends are installed in the supports under its body and connected to the transmission, each rotor-screw propeller is made of axisymmetric external and internal rotors rotated 20 interconnected their screw blades, and at least one of its supports is mounted on the housing movably and connected to a reversing drive moving along the axis

rotors.

757374

FIG. I depicts a vehicle, general view; in fig. 2 - the same, with an increased bearing and thrust surfaces of the rotors; in fig. 3 given section A — A in FIG. one; in fig. 4 - kinematic scheme of separation of rotors.

The vehicle of high passability includes a housing 1, movable supports 2 connected to the inner part 3 of the rotor, gears 4 connected to the outer part 5 of the rotor. The helical blade 6 of the inner part of the rotor is included in the screw blade 7 of the outer part of the rotor. Each rotor is equipped with an elastic balloon 8, which is connected via an air duct 9 with an air supply system.

The mechanism of separation of the rotors consists of a nut 10, made integral with a movable support, and a screw 11 connected by a drive 12 to an engine (not shown).

When moving the vehicle to a weakly bearing soil, it is necessary to increase the bearing and thrust surface of the rotor-prop. To this end, the torque is supplied from the vehicle engine to the actuators 12, which cause the screws 11 to rotate. The forward movement of the nuts 10 in turn ensures the movement of the movable supports 2 relative to the housing 1, while the rotation of the inner part of the rotor slows down. The speed of rotation of the outer part due to the difference in the speeds of rotation of both parts of the rotor is provided by unscrewing the inner part of the rotor from the concentric outer part of it. When the drive 12 is disconnected, the screws 11 stop rotating and the nuts 10 stop in a predetermined position, which ensures the fixed position of the supports 2. The torque from the engine is transmitted through the gearbox 4 to the outer part of the rotor 5 and through its screw blade 7 to the screw blade 6 of the inner part of the rotor.

With an increase in the bearing properties of the medium in contact with the propeller, it is advisable to reduce the supporting surface of the rotor and the number of blades that interact with the ground. For this, the length of the rotors can be reduced by the external value in the manner described above.

Regulation of the supporting and thrust surfaces of the rotors is most convenient to perform if this device is used in combination with a wheeled (caterpillar) thruster or when unloading the high-pressure hoses, for example,

using an air cushion. In this case, the efforts on the nuts 10, made together with the movable supports in the screws 11 (and hence their weight), and the cost of engine power will be minimal. In addition, this device allows you to adjust the displacement (capacity) of the machine afloat.

The tightness of the rotor when changing its volume is provided by an elastic cylinder 8 in which excessive pressure is maintained. To prevent twisting of the elastic cylinder 8 when creating the velocity difference of the movable part of the rotor 3 relative to the outer part of the rotor 5, it is necessary to reduce the pressure inside the elastic cylinder to such a value,

¹⁵ until its walls come out of contact with the internal cavity of the rotor. The operation of the pressure relief in the elastic cylinder 8 can be combined in time with the operation of the actuator 12.

20 The application of this proposal will significantly reduce (by 20–30%) specific pressures on the supporting surface and increase (by 15–20%) the thrust of the vehicle and therefore reduce the energy consumption for transportation of the ^15th cargo and propulsion wear.

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Claims (1)

Claim ₃₀ A vehicle of high throughput, containing rotor-screw propellers, which with their ends are installed in the supports under its body and connected to the transmission, characterized in that, in order to increase the patency by 35 adaptation of propulsion to soils with different-. By carrying a bearing capacity by changing the bearing surface, each rotor-screw propulsion unit is made of axially symmetric external and internal helical rotors movably interconnected by their helical blades, and at least one of its supports is movably mounted on the body and connected to a reversing drive moving along the axis rotors. 45