JPS582848B2 - amphibious vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an amphibious vehicle, and more particularly, the present invention relates to an amphibious vehicle, and more particularly, a rotary cylindrical floater with a blade, in which blades are arranged spirally around a rotating cylindrical body having buoyancy, is used to drive the vehicle on the surface of water, in icy water, or This invention relates to improvements to amphibious vehicles that are capable of driving in muddy areas.

Conventionally, the main running devices for amphibious vehicles have been of the crawler type using endless tracks or of the type combining wheels and propellers.

However, in the former case, running performance on water is extremely degraded, and in the latter case, it is extremely difficult to drive in sludge-like muddy areas.

In addition, resource development in cold waters, such as the development of oil fields in the North Sea, has recently become active, and amphibious vehicles that drive in these cold waters, especially in icy seas, need to operate in ice-free waters (open water) or relatively small areas. Of course, it is necessary to drive freely in bodies of water with dense ice flakes (Broken Ice) and bodies of ice thick enough to support the weight of the vehicle (On Ice), but also on bodies of water with relatively thin ice. It is essential to continuously break ice, climb from open water or broken ice to on-ice, or conversely go from on-ice to open water or broken ice. It is important to be able to quickly get on the ice.

The present invention has been made in view of the above-mentioned current situation, and it is an object of the present invention to provide an extremely practical amphibious vehicle that solves the above-mentioned problems.

That is, in the amphibious vehicle of the present invention, a bladed rotating cylindrical floater, which is constructed by spirally disposing blades around a cylindrical body having buoyancy, is mounted on the bottom or side of the vehicle body with its axis parallel to the body. The amphibious vehicle is an amphibious vehicle in which a pair of bladed rotary cylindrical floaters are arranged on the left and right, and each of the bladed rotary cylindrical floaters is driven by rotating in a desired direction about the axis, and the tip of the bladed rotary cylindrical floater is It is characterized by the addition of blades only in some parts.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An amphibious vehicle according to the present invention will be described below by way of embodiments with reference to the drawings.

The amphibious vehicle E1 of the present invention shown in FIG. A pair of left and right rotary floaters 1 are arranged with their longitudinal axes parallel to each other, and each rotary cylindrical floater 1 with blades is configured to travel by rotating about the front axis.

Further explaining the above-mentioned amphibious vehicle E1, the cylindrical body a of the left and right rotary cylindrical floater 1 with blades has a streamlined tip end shape as shown in the figure, and the outer periphery of the cylindrical body a. The winding direction of the blade 2, which is provided in a spiral manner, is opposite to each other on the left and right sides.

Therefore, by rotating the left and right rotary cylindrical floaters 1 with blades in opposite directions at the same rotation speed, a propulsive force is obtained in the axial direction, and it is possible to move forward or backward, and when turning left and right. can be easily turned by changing the rotational speed of the left and right floaters 1, and when driving in sludge-like muddy areas or on ice, the left and right floaters 1 can be rotated in the same direction at the same rotational speed. By doing so, it is also possible to travel laterally.

Also, in open water and broken ice,
By rotating the left and right floaters 1 in the same direction and at the same rotation speed, propulsive forces in opposite directions can be obtained for the left and right floaters, and the resulting turning moment enables on-the-spot turning.

The blades 2 of each bladed rotating cylindrical floater 1 are as follows:
As mentioned above, since the cylindrical body a is continuously protruded in a spiral manner, the amphibious vehicle E1 has the following structure as shown in FIG.
When climbing onto the ice floe from the water, once the end of the blade 2 bites into the edge of the water basin, it is difficult to come off and the blade can easily climb onto the ice floe.

Furthermore, as shown in FIGS. 1, 2, 3, 6, and 8, it is important to increase the number of blades 2 only at the tip of the cylindrical body a. .

Due to this structure, as mentioned above, this amphibious vehicle E1
When climbing onto the ice floe from the water, even if the first blade 2 happens to fail to bite into the water basin, the next blade 2 will bite immediately, making the climbing even easier.

The effect of increasing the number of blades is extremely effective when the vehicle E1 is traveling on ice or in a sludge area, for example, and when overcoming obstacles there.

The cross-sectional shape of the blade 2 is formed as shown in FIGS. 4a, b, and c.

That is, in the first example, as shown in FIG. This blade reinforcing plate 7 rectifies the flow of water when moving forward on water, improving propulsion efficiency.Also, since the cross section of the blade 2 becomes wedge-shaped when traveling on ice, the blade 2 bites into the water surface. The outer circumferential surface of the cylindrical body a does not directly touch the water surface when the floater is inserted into the water, thereby reducing the torque required for rotating the rotary cylindrical floater 1 with blades. This is an example in which the abutting tips of the blade main body 8 and the blade reinforcing plate 7 are aligned as shown in the figure, and the third example shown in C is the case where the blade main body 8
This is an example where the tip is slanted to make it easier to sink into the water surface.

Furthermore, the winding angle of the blades 2 in this rotary cylindrical floater 1 with blades, that is, the angle 2 formed between the cross section of the rotary cylindrical bladed floater 1 and the blades 2, is preferably 30° to 55° as shown in FIG. Also, the number of blades is preferably 2 to 4 (not including the number of blades at the tip).

The rotary cylindrical floater 1 with blades has the role of providing buoyancy to the vehicle in addition to serving as a propulsion device for the vehicle as described above.
In order to avoid losing its buoyancy even if the outer plate of the cylindrical body a constituting the floater 1 is damaged, in this embodiment, as shown in FIGS. A and the blade 2 are filled with an independent foaming synthetic resin 9.

It is desirable to set the hydration of this amphibious vehicle E1 to be near the rotational center axis of the rotary cylindrical floater 1 with blades, considering the stability of the vehicle and riding on the water basin. When moving through the ice, the blades 2 near the swamp remove ice pieces floating densely on the water surface backwards, thereby providing a strong propulsion force.

In addition, if the ice thickness is relatively thin, the weight of the vehicle will cause the basin to crack when the vehicle rides onto the ice floe from the water, and this mechanism will be repeated continuously, causing the ice floe to break as shown in Figure 8. Can be used to crush ice.

Note that 4 and 5 in the figure are front and rear struts, respectively, which connect the vehicle body 3.
The rotating cylindrical floater 1 with blades is rotatably attached between the front strut 4 and the rear strut 5, respectively.

Reference numeral 6 denotes a drive device, which in this embodiment is attached to the outside of each of the rear struts 5 as shown in the figure, so as to be able to rotate each of the bladed rotary cylindrical floaters 1 in a desired direction.

FIG. 9 shows another embodiment of the present invention, and the illustrated amphibious vehicle E2 has the bladed rotating cylindrical floater 1.
This is an example in which two pairs of are attached to the vehicle body 3, front and rear.

By attaching a plurality of pairs of bladed rotary cylindrical floaters 1 to the vehicle body 3 in this manner, it is possible to obtain a large amphibious vehicle using bladed rotary cylindrical floaters 1 of the same shape. , it is possible to improve the traction force for purging, etc.

It goes without saying that the number of blades 2 is increased only at the tip of the cylindrical body a to improve the biting performance of the blades.

The rest of the structure of this embodiment is the same as the embodiment shown in FIG. 1 and other figures described above, so detailed explanation will be omitted here.

As described above, the present invention adds a blade only to the tip of the bladed rotary cylindrical floater of an amphibious vehicle in a spiral shape, so that when climbing onto an ice floe from open or broken ice, the first blade Even if the blade fails to bite into the water basin, the next blade will bite into the water basin immediately, so it will be faster than running onto the water basin.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view;
Figures 2 and 3 are front views, Figures 4a, b,
c is an explanatory view showing each embodiment of the blade, Fig. 5 is an explanatory view showing the arrangement angle of the blade, Fig. 6 is a partially cutaway perspective view of a rotating cylindrical floater with blades, and Fig. 7 is a blade section. FIG. 8 is an explanatory view showing the ice-breaking state of the amphibious vehicle, and FIG. 9 is a perspective view showing another embodiment of the present invention. a...Cylindrical body, 1...Rotating cylindrical floater with blade, 2...Blade, 3...
...Vehicle body.

Claims (1)

[Claims] 1 At least one pair of bladed rotary cylindrical floaters, each consisting of blades arranged in a spiral around a cylindrical body having buoyancy, are arranged at the bottom or side of the car body with their axes parallel to each other, and Rotating cylindrical floater with blades,
An amphibious vehicle that travels by rotating stiffly around the axis, and characterized in that a blade is further provided in a spiral shape only at the tip of the bladed rotary cylindrical floater. Vehicle.