rescue boat

Abstract

To provide a rescue boat capable of achieving both straight-line performance and turning performance in a land movement while increasing durability.SOLUTION: One set of left and right second wheels 42 is placed in the front and back direction of one set of left and right first wheels 41, and one set of third wheels 43 is arranged in the front and back direction of the one set of first wheels 41. In side view, a first straight line L1 and a second straight line L2 make an acute angle θ backwards and upwards, where the first straight line circumscribes the first wheels 41 and the second wheels 42 from below, and the second straight line circumscribes the first wheels 41 and the third wheels 43 from below.SELECTED DRAWING: Figure 5

Claims

1. A rescue boat, The hull and, A pair of first wheels, one on each side, A pair of second wheels, one on the left and one on the right, are positioned in a first direction, either forward or backward, in the longitudinal direction relative to the first wheel. The vehicle has a third wheel positioned relative to the first wheel in a second direction, which is the opposite direction to the first direction in the front-rear direction, In a side view, a first straight line that circumscribes the first wheel and the second wheel from below, and a second straight line that circumscribes the first wheel and the third wheel from below, form an acute angle in the second direction and upward. The rescue boat can move on land in a first mode of movement where the actual center of gravity, which is the effective center of gravity of the entire rescue boat including the passengers, is located between the pivot point of the first wheel and the pivot point of the second wheel, and in a second mode of movement where the actual center of gravity is located in the second direction relative to the first wheel. A rescue boat in which, in the first mode of movement, the first wheel and the second wheel are in contact with a flat ground and the third wheel is lifted off the ground, and in the second mode of movement, the first wheel and the third wheel are in contact with the ground and the second wheel is lifted off the ground.

2. The rescue boat according to claim 1, wherein, in the longitudinal direction, the center of gravity of the hull is located between the pivot point of the first wheel and the pivot point of the second wheel.

3. The rescue boat according to claim 1, wherein the third wheel is rotatable around two axes that intersect each other.

4. The rescue boat according to claim 1, wherein the third wheels are arranged in a pair, left and right, and the distance between the pair of third wheels is narrower than the distance between the pair of first wheels.

5. The rescue boat according to claim 1, wherein the third wheel is provided at the center in the left-right direction.

6. The rescue boat according to claim 1, wherein the first direction is forward.

7. The rescue boat according to claim 6, wherein the third wheel is attached to the lower rear part of the hull.

8. The rescue boat according to claim 1, wherein the first wheel and the second wheel are attached to the lower side of the hull.

9. A rescue boat, The hull and, The hull is provided with a first mounting section for attaching a pair of first wheels, A second mounting portion is provided on the hull in a first direction, either forward or backward, in the longitudinal direction, for attaching one or more pairs of second wheels to the left and right sides, relative to the first mounting portion. With respect to the first wheel, the hull is provided in a second direction, which is opposite to the first direction in the longitudinal direction, and has a third mounting portion for attaching a third wheel, With the first wheel, the second wheel, and the third wheel mounted, in a side view, a first straight line tangent to the first wheel and the second wheel from below, and a second straight line tangent to the first wheel and the third wheel from below, form an acute angle in the second direction and upward. The rescue boat can move on land in a first mode of movement where the actual center of gravity, which is the effective center of gravity of the entire rescue boat including the passengers, is located between the pivot point of the first wheel and the pivot point of the second wheel, and in a second mode of movement where the actual center of gravity is located in the second direction relative to the first wheel. A rescue boat in which, in the first mode of movement, the first wheel and the second wheel are in contact with a flat ground and the third wheel is lifted off the ground, and in the second mode of movement, the first wheel and the third wheel are in contact with the ground and the second wheel is lifted off the ground.

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