JPS6343888A - Connecting structure for small propelling boat - Google Patents

Abstract

PURPOSE:To enable a cargo ship to be stably toward even when it performs turning action or the like, by providing a connecting structure for connecting the cargo ship with a small jet propelling boat and connecting the rear end part of the propelling boat with the front end part of the cargo ship through a pair of bar-shaped members which can be relatively moved. CONSTITUTION:This connecting means 30, for connecting a cargo ship 11 with the rear part of a propelling boat 10, comprises the first member 40 and the second member 50. The first member 40 comprises a pair of arms 41, protruding in the lengthwise direction of a ship body, and a bar-shaped guide member 42, extending in the beam direction between point end parts of said arms 41, and the guide member 42 is formed so that it forms a symmetrical circular arm for the center line of the ship body further being positioned in a tilt surface in the diagonally upper direction. While the second member 50 consists of a bar-shaped member, protruded in the lengthwise direction of a ship being formed as a whole in an almost U-shape, and point end parts 52 of the member 50 are movably fitted to the guide member 42, while the other end part is rotatably supported to a mounting member 60 provided in the front end bottom part of the cargo ship 11.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a connection structure for connecting a barge to a small jet propulsion boat, which is mainly a one-person or two-person boat and runs at high speed. It is b.

(Prior Art) Recently, small jet propulsion boats, which are small boats equipped with engines and are designed to glide on water, have come into widespread use. Since this ship is small and does not have space to carry cargo, it is necessary to tow another barge when sailing far away. This barge must be towed stably against various movements of the propulsion boat. Since the propulsion boat performs various movements, it is desirable that the barge towed by it also make almost the same movements as the propulsion boat. However, if the two are simply connected with a rope, the barge cannot avoid the same movement as the propulsion boat, and there are problems such as the barge colliding with the propulsion boat when making a sudden turn or stopping. Also, if the two are connected in a completely fixed state, it is possible to make the same movement as the propulsion boat, but this increases the length of the propulsion boat, which significantly impairs the turning performance of the propulsion boat, which is not desirable. . Furthermore, the connection structure must be designed to prevent the so-called jackknife phenomenon that occurs when a trailer on land makes a sharp turn or stops suddenly.

(Purpose of the Invention) This invention was made in order to solve the above-mentioned problems in the prior art, and it provides a means for stably towing a barge even when the I (I) launching boat turns, etc., and that the propulsion boat The purpose of the present invention is to provide a connection structure that does not impede sailing performance.

(Structure of the Invention) The present invention provides a connection structure for connecting a barge to the rear of a small propulsion boat having propulsion and turning means, in which a first member is fixedly attached to one of the barge and the propulsion boat, and the other is fixedly attached to one of the barge and the propulsion boat. a second member is mounted rotatably only about a horizontal axis;
The first member is a rod-shaped member extending in the width direction of the ship, and is formed so as to form a symmetrical arc with respect to the center line of the ship, and is positioned within an inclined surface diagonally upward. It has a pair of arms that protrude in the length direction and are symmetrical in the width direction of the ship, and the distal ends of the arms are movably fitted around the arcuate portion of the first member.

Preferably, the first member is attached to the stern of the propulsion boat, and the second member is attached to the front end of the barge. Further, it is preferable that the base end of the second member is set at a position lower than the connecting portion with the first member.

In this way, since the first member has an inclined circular arc portion and the pair of second members in the ship width direction are movably fitted around the first member, the inclination when the propulsion boat turns is reduced by the second member. The signal is transmitted to the barge by the two members, causing the barge to tilt in the same way, and when turning, the directions of the propulsion boat and the barge change, allowing smooth turning.

(Example) In FIGS. 1 and 2, a barge 11 is connected to the rear of the boat 11 (propulsion boat 10 via a connecting means 30). It is composed of a side plate 24 and an upper deck 25, and a sealed engine room is formed in a portion surrounded by the bow bottom plate 23 and upper deck 25. A foot deck 29 is formed at the rear L side of the engine room. A seat 26 is formed to protrude from the center in the width direction of the ship.A branch 27 is formed to protrude from the upper deck 25, and a handle 28 is provided at the upper end of the king. Foot deck 2
The propulsion boat 10 is operated by riding on the boat 9 and grasping the handle 28.

An engine (not shown) is disposed in the first engine room, and a propeller rotated by this engine is disposed above the seat 26, sucks water from the water suction port on the bottom of the boat, and sprays it rearward from a nozzle opened at the stern end. By this,
It is designed to generate turning force and propulsive force.

The barge 11 is composed of a main body 12 and a lid 13.
can be attached to the body 1 by hinges at the front, rear or sides.
It is attached to 2 and opened and closed, inserting the baggage inside,
It is made so that it can be taken out. As shown in FIG. 3, at the bottom of the main body 12, protrusions are formed on both sides in the ship width direction to constitute a buoyant force generating part 15, and the bottom plate 14 between the buoyant force generating parts 15 on both sides is It is constructed higher than both sides. The buoyant force generating section 15 may be configured to be hollow so that cargo can also be accommodated in this hollow section.

The connecting means 30 consists of a first part 40 and a second member 50, and the first member 40 includes a pair of arms 41 that protrude in the longitudinal direction of the hull and a rod-shaped guide that extends in the width direction between the arms 41 and their tip ends. The base end portions of the arms 41 are attached to both sides of the stern end of the propulsion boat 10. The guide member 42
is formed so as to form a symmetrical arc with respect to the hull centerline, and to be located within an inclined plane diagonally upward. Also, a member = 6 is attached to the center of the stern end of the propulsion boat 10.
- 44 is attached, and the holding part 45 at the tip holds the center part of the guide member 42, whereby the guide member 42
is fixedly installed.

The second member 50 is made up of a pair of rod-like members that protrude in the longitudinal direction of the ship and are symmetrical in the ship's transverse direction, and the rod-like members are connected to each other at the center to form a substantially U-shape as a whole. There is. A member 60 is attached to the lower part of the front end of the barge 11.
is attached, and the center part of the second member 50 is rotatably passed through the pages in the transverse direction of the ship, and the tip end 52 of the second member 50 is movable relative to the guide member 42 of the first member 40. is fitted externally. Since the second part 50 has a certain width B in the ship width direction and is rotatably attached to the member 60, it cannot swing in the ship width direction and can only swing around the horizontal axis. can do.

In the above configuration, when the propulsion boat 10 travels, the coupling means 3
A barge 11 connected via 0 is towed. On this occasion,
The high-speed water stream jetted from the propulsion boat 10 passes through the recess between the buoyancy launching parts 15 of the barge 11, so that the propulsion resistance does not increase due to this water stream.

Further, since the second member 50 is rotatable at its base end, the barge 11 can pitch due to the influence of waves, and the front end of the barge 11 is pulled diagonally upward by the second member 30. This prevents the barge 11 from plunging into the water.

When the propulsion boat 10 is tilted laterally and turned, the guide member 4
The second member connected to 2 at two points in the width direction of the ship is also tilted in the same way, and this tilting force is transmitted to the barge 11 via the attachment member 60, and the barge 11 is also tilted in the same direction. For example, when the propulsion boat 10 turns to the left, the propulsion boat 10 turns while tilting to the left. Along with this, the guide member 42 also tilts to the left, and the second member 50 connected to the guide member 42 maintains its speed due to the inertia of the barge 11.
As the propulsion boat 11 turns, resistance increases and speed decreases. Therefore, along the guide member 42, the second member 50
moves outward (to the right).

At this time, since the guide member 42 is inclined, the barge 11 coupled to the second member 50 is inclined in accordance with the inclination of the second member 50, and the barge 11 is directed as shown by the imaginary line in FIG. will change. Therefore, the turning of the propulsion boat 10 is
It can easily turn without being obstructed by the barge 11.

In this way, the barge 11 pitches independently of the hull 10, but when turning, the tilting force necessary for turning is transmitted, as well as the direction changing force, so that smooth turning is performed.

(Effects of the Invention) As explained above, the present invention connects a barge to a propulsion boat so that they can move independently to some extent, so that the barge can be towed stably even when the propulsion boat turns, and the propulsion boat can It does not impede the navigation performance of the aircraft.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the invention, FIG. 2 is a plan view thereof, and FIG. 3 is a rear view of the barge. DESCRIPTION OF SYMBOLS 10... Propulsion boat, 11... Barge, 30... Connection means, 40... First member, 42... Guide member, 50
...Second member.

Claims (1)

[Claims] 1. A connection structure for connecting a barge to the rear of a small propulsion boat having propulsion and turning means, wherein a first member is fixedly attached to one of the barge and the propulsion boat, and a first member is fixedly attached to the other. The second member is attached to be rotatable only around a horizontal axis, and the first member is installed so that the rod-shaped member extending in the transverse direction forms an arc symmetrical with respect to the hull centerline and tilts diagonally upward. The second member is formed to be located within the plane, and the second member has a pair of arms that protrude in the length direction of the ship and are symmetrical in the width direction of the ship, and the tips of the arms meet the arcuate portion of the first member. A connection structure for a small propulsion boat, characterized in that the connection structure is movably fitted to the outside of the boat. 2. The first member is attached to the stern of the propulsion boat, and the second member is attached to the stern of the propulsion boat.
A connecting structure for a small propulsion boat according to claim 1, wherein the member is attached to the front end of the barge. 3. The connection structure for a small propulsion watercraft according to claim 2, wherein the second member has a base end attachment portion set at a lower position than a connection portion with the first member.