RU225951U1 - Device for compensating the drift of a floating machine by water flow - Google Patents

Abstract

The utility model relates to devices for the movement of floating machines on water, to devices of the “water jet” type, in which the propeller is enclosed inside a pipe, and can be used to compensate for the drift of floating machines by the flow of water when entering the water and leaving the shore, as well as for increasing maneuverability, reducing the turning radius by controlling the bow of floating vehicles when moving afloat. The purpose of developing this useful model is to increase the controllability and maneuverability of floating vehicles when moving afloat, maintaining a given course of movement when overcoming a water obstacle and exiting at a given target on the opposite bank. When moving a floating vehicle in reverse, it can also provide high maneuverability and, if necessary, turn the vehicle almost on the spot. A device for moving floating machines through water, containing a propeller enclosed inside a pipe, characterized in that it also contains an electric motor, a control unit, a control panel, an angular gearbox, the propeller contains impellers having, respectively, right and left bends of the blades located on one shaft and directed in different directions, designed to be driven through an angular gearbox from an electric motor and installed inside a tunnel consisting of a pipe of variable cross-section rigidly attached to the body of a floating machine, while this device is located in the bow of the floating machine below the waterline transverse to the longitudinal axis of the floating machine cars. The technical result is achieved by the fact that the device for moving floating machines through water is located in the bow below the waterline and has impellers as a propeller, which convert the rotational movement of their blades into the translational motion of the floating machine. The section of the tunnel in which the impellers are located must have a strictly cylindrical shape and have the necessary rigidity, since the gap between the ends of the impeller blades and the tunnel surface in this area is small, and deformation can lead to damage to the impellers.

Description

The utility model relates to devices for the movement of floating machines on water, to devices of the “water jet” type, in which the propeller is enclosed inside a pipe, and can be used to compensate for the drift of floating machines by the flow of water when entering the water and leaving the shore, as well as for increasing maneuverability, reducing the turning radius by controlling the bow of floating vehicles when moving afloat.

The purpose of developing this useful model is to increase the controllability and maneuverability of floating vehicles when moving afloat, maintaining a given course of movement when overcoming a water obstacle and exiting at a given target on the opposite bank. When moving a floating vehicle in reverse, it can also provide high maneuverability and, if necessary, turn the vehicle almost on the spot.

A device for moving floating machines through water, containing a propeller enclosed inside a pipe, characterized in that it also contains an electric motor, a control unit, a control panel, an angular gearbox, the propeller contains impellers having, respectively, a right and left bend of the blades located on the same shaft and directed in different directions, designed to be driven through an angular gearbox from an electric motor and installed inside a tunnel consisting of a pipe of variable cross-section rigidly attached to the body of a floating machine, while this device is located in the bow of the floating machine below the waterline transversely longitudinal axles of a floating machine.

The PT-76 light amphibious tank (Russia) is known - see “Modern armored vehicles”, reference manual, author-compiler N.I. Ryabinkin, Minsk, “Elaida”, p. 121, with a combat weight of 14 tons, containing a displacement hull , engine-transmission unit with gearbox, caterpillar propulsion unit with suspension, internal stern water-jet propulsion units with power take-off from the gearbox load shaft through gear drives. The tank is equipped with two elongated jet water cannons, the bodies of which are fixedly connected to the vehicle body. Water is drawn in by axial pumps of water cannons from under the bottom of the tank through two windows covered with bars. When moving, axial pumps with an impeller release water through two aft windows. The machine is equipped with rotary valves.

The BMP-3 infantry fighting vehicle (Russia) weighing 18.7 tons is known - see “Modern armored vehicles”, reference manual, author-compiler N.I. Ryabinkin, Minsk, “Elaida”, p.193. The engine and transmission compartment in this machine is located in the rear of the vehicle body. Movement afloat is ensured with the help of two highly efficient axial internal stern water-jet propulsors with impellers, which have a drive from the gear and rotation mechanism, independent of the gear engaged. The water-jet propulsion body is rigidly connected to the machine body. The machine is turned afloat using flaps.

The light armored personnel carrier BTR-80 (Russia) is known - see “Modern armored vehicles”, reference manual, author-compiler N.I. Ryabinkin, Minsk, “Elaida”, p. 188, with a combat weight of 13.6 tons, containing a displacement housing, engine-transmission unit with gearbox, water-jet propulsion unit with an axial pump located in the rear of the machine. The wheel propeller and water jet are controlled using a steering mechanism. Turning the machine when moving afloat is carried out by simultaneously turning the water rudders and wheels.

In the above-mentioned floating vehicles with water cannon bodies rigidly connected to the vehicle body, there are no devices that provide high maneuverability and controllability when moving afloat, which is especially important for vehicles crossing water obstacles, as well as when passing minefields when going ashore.

The technical result of the utility model is aimed at maintaining maneuverability and propulsion when crossing water obstacles and compensating for the drift of a floating vehicle while afloat by water currents.

The technical result is achieved by the fact that the device for moving floating machines through water is located in the bow below the waterline and has impellers as a propeller, which convert the rotational movement of their blades into the translational motion of the floating machine. The section of the tunnel in which the impellers are located must have a strictly cylindrical shape and have the necessary rigidity, since the gap between the ends of the impeller blades and the tunnel surface in this area is small and deformation can lead to damage to the impellers.

The device for the movement of floating machines on water is illustrated by drawings:

In fig. 1 - schematic diagram of a device for moving floating machines on water.

Electric motor 1 with a remote control and control unit are located directly in the body of the floating machine and allow the driver to control the entire device, bevel gear 2 and two impellers 3 with blades bent in different directions (right and left bent), located on the same shaft and directed in different directions , installed inside the tunnel 4, driven through an angular gearbox from an electric motor, the tunnel consists of a pipe of variable cross-section, while gratings 5 are installed on the right and left sides of the tunnel to prevent the ingress of stones, large debris and damage to the angular gearbox with impellers.

In fig. 2 - a device installed on a floating vehicle, in this case on the BTR-80, on the bow below the waterline, while it does not interfere with the land propulsion unit’s movement on a solid surface. For the purpose of maintenance, repair or replacement of the bevel gear and impellers, an additional access hatch to the units is provided.

The operating principle is based on the following.

When you turn on the power button on the control panel, the electricity generated by the generator of the floating machine is supplied to the control unit and then to the propulsion motor, the rotational movement from the electric motor is transmitted through the bevel gear to the impellers and forces them to rotate in a certain direction, thereby creating water intake from one side of the tunnel and the release in the other direction. Water enters the tunnel from both sides and has a direction of movement depending on the direction of rotation of the impellers. Water captured by the blades at the entrance to the device passes through and is picked up by the next blades of the impeller and is forced out through the opposite end of the tunnel with a certain force created by the impellers. This creates a traction force for the device, directed along the axis of the device and transmitted to the device through the axes of the impellers and the angular gearbox. The rigid connection of the device and the body of the floating machine ensures movement in the direction opposite to the release of water from the device. Accordingly, the higher the speed of rotation of the impellers, the higher the traction force and the higher the speed of movement of the bow part of the body of the floating machine.

Thus, the stated technical result is achieved by the fact that an increase in the traction force on the impellers of the device ensures control of the bow of the floating machine when moving afloat and compensates for the drift of the floating machine by the flow of water.

Claims (1)

A device for moving floating machines through water, containing a propeller enclosed inside a pipe, characterized in that it also contains an electric motor, a control unit, a control panel, an angular gearbox, the propeller contains impellers having, respectively, right and left bends of the blades located on one shaft and directed in different directions, designed to be driven through an angular gearbox from an electric motor and installed inside a tunnel consisting of a pipe of variable cross-section rigidly attached to the body of a floating machine, while this device is located in the bow of the floating machine below the waterline transverse to the longitudinal axis of the floating machine cars.

Images