RU187660U1 - Screw propeller for machines performing technological operations at the bottom of water bodies - Google Patents

Abstract

The utility model relates to technological engineering, namely, to the design of screw drives designed to work complete with disk and finger mills, a bar and plow working body, as well as soil hydraulic erosion devices designed to develop the bottom of water bodies. The technical problem of the proposed utility model is a solvable an increase in the tractive effort developed by the rotor-screw propulsion when moving along the bottom of the reservoir. The technical result is achieved by the fact that in the auger propeller for ma tires performing a technological operation at the bottom of reservoirs, consisting of two base cylinders that have the opposite direction of winding spirals and the opposite direction of rotation, the screw blades have a cross section in the form of a triangle with a rectangular cutout forming helical grooves in the ground of one of the faces parallel to each other the bottom surface, which prevents the ascent of the complex from the action of the vertical component of the effort to develop bottom soil.

Description

The utility model relates to technological engineering, namely, to the design of screw propellers designed to work complete with disk and finger mills, a bar and plow working body, as well as soil hydraulic erosion devices designed to develop the bottom of water bodies.

Known devices containing a tractor with a rotor-screw propeller and disk cutters, a saw or a knife (description of a utility model for patent No. RU 132040 U1, claimed May 27, 2013, USSR author's certificate No. SU 1735680 A1, claimed 01.02.90, USSR author's certificate No. SU 1334002 A1, claimed 16.01.85, description of the invention to copyright certificate No. 327289, claimed 27.09.1968), containing a pair of screw rotors located parallel to each other, creating the necessary traction force for ice cutting.

At the same time, any changes to the design of the screw propeller itself (description of the invention to copyright certificate No. 69397, claimed 2.10.1945, US patent No. 3123039 CL 115-1, declared in 1960, description of the invention to copyright certificate No. 235566, claimed 06/27/1967, US patent No. 3682127 class 115-19, filed in 1972, description of the invention to copyright certificate No. 551715, claimed 05/20/1975, description of the invention to copyright certificate No. 835873, filed November 3, 1978, description of the invention to copyright certificate No. 929488, claimed 05/07/1979, description of claims to copyright certificate No. 918164, claimed July 15, 1980, description of the invention to copyright certificate No. SU 1011400 A, claimed April 15, 1983, description of the invention to copyright certificate No. SU 1131745 A, claimed April 6, 1972, description of the invention to copyright certificate No. SU 1194711 A, claimed on 06/19/1984, a description of the invention to patent No. RU 161941 U1, declared on 12/21/2015, a description of the invention to patent No. RU 2312040 C2, declared on 07.29.2005) the authors of these inventions did not make. As a result of the action of the working body on the developed soil, under the influence of the cutting force or the reactive component of the hydraulic jet, the vertical component of the propulsion pressure on the soil decreases, the technological module rises, the effective depth of the introduction of the blades into the support medium decreases, which ultimately leads to skidding and the shutdown of the technological complex due to insufficient adhesion of the propulsion device with the ground

The closest in technical essence and the achieved result to the proposed utility model is an unmanned auger icebreaker (utility model description RU 132040 U1, announced 05.27.2013)

The installation comprises a housing and screws, characterized in that its housing is sealed and made in the form of an ice cutter, hollow inside, with the possibility of loading it with ballast, the screws are connected to the engine by means of a gearbox and drive shafts, while an ice-cutting saw is installed in front of the unmanned icebreaker-auger. and / or ice-cutting vibration knife, sharp metal knives are installed on the screws by means of hard fastening.

The machine will mix on two parallel-mounted rotor-screw propellers attached to the body and having a different direction of winding of the rotor spirals.

However, when developing bottom sediments, the resistance to cutting in a vertical plane begins to exceed the weight of the technological complex (taking into account the presence of the Archimedes force acting on the immersed technological means), the complex emerges with the termination of the technological process.

The technical problem of the proposed utility model to be solved is the increase in the tractive effort developed by the rotor-screw propulsion when moving along the bottom of the reservoir.

The technical result is achieved by the fact that in a screw propeller for machines performing a technological operation at the bottom of reservoirs, consisting of two base cylinders that have the opposite direction of winding spirals and the opposite direction of rotation, the screw blades have a cross section in the form of a triangle with a rectangular cutout forming helical grooves in the bottom soil of one of the faces parallel to the bottom surface, which prevents the ascent of the complex from the action of the vertical component of the force I am developing bottom soil.

New in the proposed utility model is that, the profiles of the helical blades of the screw propellers are not isosceles triangles, but a triangle with a rectangular cut. The location of the horizontal face of the helical blade prevents the ascent of the technological complex.

The proposed technological tool is presented in figure 1, and the profile of a helical blade in figure 2.

The proposed technological tool for the development of bottom rocks contains a bearing base 1, on the sides of which are two base cylinders of the screw propulsion 2 having the opposite direction of winding of the screw blades 3 and rotate from the drive 4. The destruction of the bottom rocks occurs under the action of the working body 5

Technological tool for the mechanical destruction of bottom rocks works as follows.

Destruction of bottom rocks occurs with the rectilinear movement of technological means. The helical blade cuts into the support medium with the first turn, cutting a helical groove in it. Moreover, this helical groove does not have the shape of an isosceles triangle, but a triangle with a rectangular cutout, which ensures the presence of a face in the cut groove that is parallel to the supporting surface. Therefore, the vertical component of the cutting force developed by the working body is transmitted to the horizontal section of the cut helical groove, which prevents the vertical movement of the machine. Thus, an increase in the total clamping force of the technological complex is provided.

Claims (1)

Screw propeller for machines performing a technological operation at the bottom of reservoirs, consisting of two base cylinders that have the opposite direction of spiral winding and the opposite direction of rotation, characterized in that the screw blades have a cross section in the form of a triangle with a rectangular cutout forming helical grooves in the bottom the soil of one of the faces parallel to the bottom surface, which prevents the ascent of the complex from the action of the vertical component of the development of the bottom g rune.

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