RU208775U1 - Cylindrical rotor with helical ridge for screw propulsion - Google Patents

Abstract

The utility model relates to off-road vehicles. Declared is a cylindrical rotor with a helical ridge for auger propeller, in which the height of the helical blade of the auger is greater than the diameter of the rotor, and support rollers are located between the cheeks of the auger. The technical result of the proposed utility model will be to reduce the pressure of the rotor on the surface of movement. 3 ill.

Description

The utility model relates to off-road vehicles, namely to the development of a cylindrical rotor with a helical ridge for auger propeller in which the height of the helical blade of the auger is greater than the diameter of the rotor, and support rollers are located between the cheeks of the auger.

Known (see author's certificate No. 49 899 (cl. 63K / 23) dated 10/31/1935) a screw propeller with a helical blade made in the form of two parallel cheeks, between which the rollers are located (Fig. 1).

The functionality of the known screw propulsion prototype is limited when moving on solid surfaces of asphalt, concrete, etc.

The driving part of the screw propeller is a large-diameter rotor, and a low helical blade is soil-capturing (Fig. 2).

As a result, all the pressure on the surface of the vehicle falls on the rotor, and the screw is pressed into the ground. The resulting resistance requires an increase in engine power and reduces the speed of movement.

The auger propeller crawls on the rotor, moving due to the rotation of the rotor, which presses the auger blades into the ground. Therefore, they can be called lugs. The rollers proposed in the prototype only slightly facilitate the rotation of the rotor and cannot be supported due to the ratio of the rotor diameter and the height of the helical blades.

The technical result of the proposed utility model will be to reduce the pressure of the rotor on the surface of movement.

Therefore, it is proposed to change the ratio - the height of the helical blades should be greater than the diameter of the rotor (Fig. 3), then on hard surfaces the rotor will not touch the ground, which will prevent it from crawling along it. To prevent the auger with rollers from being pressed into softer soil, it is proposed to increase their width of the rollers (Fig. 4), which will allow them to be called support rollers.

The propeller should not crawl along the ground clinging to the auger, but roll without touching the surface of the rotor body, turning over the rollers (Fig. 5) located between the cheeks of the auger, like a tank caterpillar.

The distance between the cheeks of the auger and the width of the rollers significantly affect the auger support area at the point of contact with the moving surface.

In order to eliminate the shortcomings noted in the prototype, it is proposed to reduce the rotor pressure on the movement surface by increasing the height of the helical blades and reducing the diameter of the rotor body, as well as increasing the width of the rollers. The pitch of the screw depends on the tasks of the mover - perhaps it is an almost continuous belt of rotating rollers.

The technical solution proposed by the utility model to reduce the pressure of the screw propeller rotor on the surface is illustrated (Fig. 3, 5). The rotor of the auger propeller carries a helical blade, which is made in the form of one or two cheeks parallel to each other, on which or between which rollers are freely fitted on the axes. The distance between the rollers, as well as the pitch of the screw, depend on the tasks of the engine. Some may help slide the auger while others will act as lugs. It is possible to use any materials for the utility model.

The proposed support of the auger rollers provides the pressure of adjacent rollers on a horizontal plane with a minimum load, which allows the auger propeller to move along the road (asphalt, concrete, etc.) with increased speed, good grip and not spoil their coating.

This type of propulsion allows vehicles to move from a place in any direction. Forward-backward and right-left, which is interesting for special purpose vehicles.

The location of the auger drive and its reference points on the auger shaft, in any place, as well as the possible division of the auger into parts, allows the mover to overcome any uneven areas.

Thus, the proposed technical solution, according to the applicant, is new, has an inventive step of a utility model and is industrially applicable.

List of figures.

Fig. 1. View of two parallel cheeks, between which the rollers are located.

1 - cylindrical body of the rotor

2 - cheek

3 - roller

4 - axis

Fig. 2. View of a screw propeller with a wide rotor and a small helical blade.

1 - cylindrical body of the rotor

2 - cheek

Fig. 3. Type of the proposed movable screw propeller.

1 - cylindrical body of the rotor

2 - cheek

3 - roller

Fig. 4. Types of rollers.

3 - roller

Fig. 5. Type of movement of a movable screw propeller with an increased width of the rollers.

1 - hollow cylindrical body of the rotor

2 - cheek

3 - roller

Documents cited in the search report.

1. SU 49899 A 11936.08.31 Kezgermezov G.L. Screw drive.

2. SU 551215 A 11977.03.25 Sogin A.V. Screw drive.

3. RU 2653387 Dyadchenko N.P. Screw drive.

4. RU 2609181 Lyalin A.P. Screw drive.

Claims (1)

Cylindrical rotor with a helical ridge for auger propeller, characterized in that the height of the helical blade of the auger is greater than the diameter of the rotor, and support rollers are located between the cheeks of the auger.

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