RU220533U1 - Device for high-speed human movement in water - Google Patents

Abstract

The utility model relates to devices for moving a person in water using their own muscular efforts. The technical result of the utility model is to increase the speed of human movement in water. The technical result was achieved due to the fact that a device for high-speed movement of a person in water is proposed, consisting of a body on which a means of fastening a person is fixed. As a transmission mechanism for moving the working limbs of a person to the propeller, a non-self-locking “screw-nut” transmission with a mechanism is used that makes it possible not to transmit the reverse movement of the carriage attached to the nut. A casing is rigidly fixed to the hull, in which a double propeller consisting of two coaxial propellers rotating in opposite directions is installed. Two screw shafts are installed in the bearing supports of the housing and casing, forming independent “screw-nut” transmissions for each limb with the carriages installed on them. Each of the two propellers is kinematically connected to one of the two shafts through mechanical gears installed in the casing. A removable fairing made of optically transparent material is installed on the device body. The device can find application in the widest areas of human activity in the aquatic environment. 1 salary f-ly, 2 ill.

Description

Technical field

The utility model relates to devices for moving a person in water using their own muscular efforts.

State of the art

A device for the movement of a combat swimmer under water is known [RF Patent No. 2295372, publ. 03/20/2007, BI No. 8], containing coaxial propellers of multidirectional rotation, placed on the hull and driven into rotation by transmitting the reciprocating motion of the swimmer’s limbs through racks and gears. However, such a design is complex and contains a large number of moving parts, which causes large losses of the swimmer’s muscular energy. The bulkiness of the design significantly limits maneuverability. Also, due to the mismatch between the direction of movement of the swimmer and the direction of thrust of the propellers, a capsizing moment is created, which the swimmer will be forced to compensate for by the unnatural tense position of his body, which will create difficulties in controllability when using such a device, and again additional losses of energy expended by the swimmer. The device creates high drag, which also reduces the ability of the swimmer to develop high speed.

A known device for movement in water [RF Patent No. 199526, publ. 09/07/2020, BI No. 25], containing a housing in the form of a telescopic rod, at one end of which a gearbox with a pedal drive is attached, on the drive shaft of which a propeller is located, and at the other end - a means of attaching the device to the human body. A significant disadvantage of this device is the bicycle drive principle. However, compared to ground operation in an aquatic environment, with such kinematics, the main share of effort is spent on overcoming the resistance of the medium, and not on transmitting torque to the drive. The main share of energy expended is spent on overcoming the resistance of water.

The closest technical solution is a device for high-speed movement of a person in water [RF Patent for PM No. 2, publ. 2023, BI No.], made in the form of a body on which a means of fastening the body of a human swimmer is fixed. The drive shaft is fixed at one end in the housing with the possibility of free rotation around its axis, and the propeller is fixed at the other end. The shaft is made of a screw, and a carriage is installed on it with the possibility of reciprocating movement along the axis of the shaft, which engages with the shaft with the surface of the hole, which corresponds to the screw surface of the shaft, forming a non-self-locking screw-nut type transmission. The carriage is equipped with a mechanism that makes it possible not to transmit the reverse movement of the carriage when returning the swimmer's limbs to their original position before applying the working force. Means for fastening human limbs are fixed to the carriage.

The disadvantages of this solution are, firstly, the unidirectional movement of the propeller, which creates a reverse torque on the swimmer, tending to rotate the swimmer around the direction of movement. The swimmer is forced to compensate for this moment either by the position of his body during movement, or by installing the steering wheel provided in the design. In both cases, torque compensation leads to a loss of expended energy and, accordingly, to a loss of movement speed. Another disadvantage is the inability to alternately work the swimmer's legs, which is more ergonomic compared to the simultaneous movement of the limbs, especially when moving over long distances.

The technical result of the utility model is to increase the speed of human movement in water.

Disclosure of utility model

The technical result was achieved due to the fact that a device for high-speed movement of a person in water is proposed, consisting of a body on which a means of fastening a person is fixed. As a transmission mechanism for moving the working limbs of a person to the propeller, a non-self-locking screw-nut transmission with a mechanism is used that makes it possible not to transmit the reverse movement of the carriage attached to the nut. A casing is rigidly fixed to the hull, in which a double propeller consisting of two coaxial propellers rotating in opposite directions is installed. Two screw shafts are installed in the bearing supports of the housing and casing, forming independent “screw-nut” transmissions for each limb with the carriages installed on them. Each of the two propellers is kinematically connected to one of the two shafts through mechanical gears installed in the casing. A removable fairing made of optically transparent material is installed on the device body.

List of drawings

In fig. 1 shows a kinematic diagram of the device; Fig. 2 is a schematic representation of a human swimmer using the device.

Implementation of a utility model

A device for high-speed movement of a person in water consists of a housing 1 (Fig. 1), with a means of attaching it to the body of a human swimmer 2, a casing of propellers 3 is fixed to the casing 1, screw shafts 4 are installed in the bearing supports of the casing and casing. 5 with carriages installed on them, 6 and 7, respectively. The carriages are equipped with built-in mechanisms that, in interaction with the screw shafts, form two “screw-nut” gears, as well as mechanisms that make it possible not to transmit the reverse movement of the carriage when returning them to their original position towards the device body. Shafts 4 and 5 are connected through gearboxes to the corresponding propellers 8 and 9. A removable fairing 10 is attached to the hull (Fig. 2).

The device works as follows. The swimmer fastens the device 2 in the belt area, while the body 1 can be rotated around an axis perpendicular to the body 1 in the area where the fastening means is located. Thus, the swimmer, having secured the device, can turn it away from the direction of movement, and thus, without inconvenience, enter the reservoir, holding it in his hands and tilting it to the right or left as he goes. While in the water, the swimmer places the limbs in the corresponding holes in the carriages 6 and 7 and begins to move, straightening one or both legs alternately with the application of force. In this design, the transmission of motion is somewhat complicated due to the fact that an additional stage of motion transmission has appeared, but given that the efficiency of a twin propeller, as is known, is noticeably higher than a single one, this significantly compensates for losses in mechanical transmissions. If, for example, a gear train with polymer gears is used, then sealing of the gear unit will not be required. When both limbs work simultaneously, the movement will be absolutely linear. When moving alternately, a slight sway from side to side is possible, which will have an insignificant effect on the swimmer’s movement, taking into account the inertia of the swimmer’s mass. A removable fairing 10 (Fig. 2) made of an optically transparent material can be attached to the body, in which additional devices can be installed, for example, steering control elements, navigation devices, etc. The fairing, made taking into account the laws of hydrodynamics, allows you to increase speed and also create certain conveniences for the swimmer.

The device can find wide application in the field of sports, entertainment, underwater tourism, fishing, monitoring of underwater structures, etc.

Claims (2)

1. A device for high-speed movement of a person in water, consisting of a body on which a means of fastening a person is fixed and a drive that uses, as a transmission mechanism for moving the working limbs of a person to the propeller, a non-self-locking “screw-nut” transmission with a mechanism that allows not to transmit the reverse movement of the carriage mounted on a nut, characterized in that a casing is rigidly fixed to the hull, in which a double coaxial propeller is installed with the possibility of rotating each of the individual screws in opposite directions, and two screw shafts are installed in the bearing supports of the hull and casing, forming with the installed they have carriages with independent “screw-nut” transmissions for each limb, and each carriage is equipped with a mechanism that makes it possible not to transmit the reverse movement of the carriage, while each of the two separate propellers is kinematically connected to one of the two screw shafts through mechanical gears installed in casing. 2. A device for high-speed movement of a person in water according to claim 1, characterized in that a fairing made of optically transparent material is installed on the device body.

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