LV14363B - Transfer mechanism of hydrodynamic fin vibrating actuator - Google Patents

Abstract

The invention relates to transfer mechanisms of hydrodynamic fin vibrating propulsive devices, and it can be used on boats, yachts, fishes-robots, submarines. The purpose of the present invention is use of a link of new type for realisation of transfer of capacity from horizontally established electric motor to vertically located rigid fin. The specified purpose is reached using the transfer mechanism made up in the form of two mutually perpendicular sites of fin with the cut located between them. The pulley tooth enters into said vertical cut carrying out a movement in it. The driving pulley of the link used for transfer of motion is rigidly connected with the horizontal axle of electric motor, and the vertical half-axle of said link gives rise to the rotations of fin, said rotations being excited as vibrations of vertically located rigid fin.

Description

Description of the Invention

The invention relates to hydrodynamic fins vibrator moving gear and can be used for launching boats, yachts, robotic fish, submarines, etc.

Hydrodynamic fins vibrator motors, known as crank-like mechanisms used in water to propel vessels, move fish-like submersible robots and launchers, are known [1]. The disadvantage of the crank-to-knuckle mechanism is that it can only convert the motion of an electric motor into a oscillation motion of a fin if the motor and fin axis are parallel. The disadvantage can also be considered to be the production of a relatively sophisticated slider. Therefore, such a mechanism is predominantly used in very heavy machine loads, but the slider movement guides cause high energy losses due to friction.

In order to reduce the hydrodynamic resistance of submersible craft, it is necessary to reduce the cross-sectional dimensions of their hulls. Therefore, it would be rational to position the motor horizontally and parallel to the longitudinal axis of the submersible craft, but it is not possible, by means of the crank mechanism, to modify the motion of the horizontal motor of the tail motor.

From a technical point of view, the closest known motion transmission mechanism for the present invention is a fin vibrator [2], which is selected as a prototype and consists of an electric motor, a pulley, a flat bevel mechanism and a rigid material fin (Fig. 1). It is mounted on the cutter body 1 and consists of an electric motor 2 with a pulley mounted on the shaft 3. The pulley gear 4 slides through a gap in the tiller 5 which is attached to the pivot axis 6. A flat fin is mounted on a horizontal plane 7. The rotor axis of the motor is positioned vertically and parallel to the axis of oscillation of the fins. As the fin oscillates around the vertical axis, the motion of the craft's motion in the water is induced. The simplest solution used to connect the vertebra to the scissors is a cylindrical tooth. Such a design is relatively easy to build, is suitable for small objects and does not cause large energy losses, but the disadvantage of the prototype is the difficulty of transferring motion from a horizontally positioned engine to a vertically positioned fin.

The object of the invention is to provide a motion transmission mechanism from a horizontally positioned motor to a vertically secured rigid fin. The object is achieved by employing in the proposed mechanism a bar formed of two mutually perpendicular sections, the vertical section having a gap through which the vertebra tooth moves. The pulley is tensioned on the axis of the motor, but through the horizontal section of the scissor passes a rigid axis of rotation of the fin which is rigidly connected to the fin.

In order to explain the principle of operation of the proposed hydrodynamic fin moving machine and justify its advantages over the prototype, the following graphical materials are included in the description:

- Fig. 1 a general view of the friction vibrator of the fin described in the prototype is shown (Fig. 1a is a side view and Fig. 1b is a plan view);

- Fig. 2 a longitudinal section (side view) and a cross section (proposed invention) of the tail portion of the robotic fish are shown;

- Fig. 3 a flow diagram of the proposed equipment is shown;

Fig. 2 a horizontal electric motor 2 is mounted in the robot fish housing 1 shown. A pulley 3 with a pulley gear 4 is mounted on its output shaft. These details are already known. The tooth 4, the axis of which is parallel to the axis of the robotic fish, fits into the circular slot of the vertical section of the oscillating scissor 5 (see section A-A in Fig. 2). The horizontal section of the heel 5, which forms an angle of 90 ° with the vertical section, is rigidly attached to the rigid axis 8 of the oscillation axis 6. The axis 6 rotates in bearings 7 fixed to the housing 1. The fin 8 is rigidly attached to the axis of rotation oscillation together with the tiller 5. Due to this construction of the tiller 5, the axis of rotation О1-О2 of the fin 8 is perpendicular to the axis of rotation of the horizontally positioned electric motor 2.

Fig. 3 the top view shows the three positions of the fin 8 at different positions of the scissor mechanism:

• Fig. 3a the neutral state of the fin is shown;

• Fig. 3b the fin is in good standing condition;

• Fig. 3c. the extreme left position of the fin is shown.

The machine operates as follows. Pulley 3 rotates clockwise (view from the fin). When the tooth 4 reaches the upper or lower position (Fig. 3a), the fin 8 takes on a neutral position and the angle of opening of the fin relative to the axis of the robotic body is zero (β = 0). With culvert 5 in its extreme left position, fin 8 takes its extreme right position with a maximum angle of inclination (+ β). With culvert 5 in extreme right position, fin 8 takes on extreme left position with maximum angle of rebound (-β). Thus, the rotational motion of the horizontally positioned electric motor 2 is altered by the oscillation movement of the fin 8 around a vertical axis, which allows the robot fish to move in the water.

Sources of information:

1. Cryptosporal-Colonic Mesenchymal.

- http://cherch.ru/mechanizmi_i_mashini/kulisniy_mechanizm.html

2. Patent LV 14054 (prototype).

Claims (1)

1. A hydrodynamic fin vibrator movement mechanism comprising a tooth and a coulter pin pulley superimposed on an electric motor shaft, characterized in that the transverse axis of the motion is provided by a rotating oscillating axis from a horizontally positioned electric motor to a solid material fin. perpendicular sections, the vertical section of which has a gap through which the vertebra tooth moves, but through the horizontal section of the scissor passes a rigid axis of rotation of the fin which is rigidly connected to the fin.