JP2002331992A - Device for connecting pusher boat to barge by operation of concentric connecting shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a conventional method in which a tugboat tows a barge with a wire rope causes hard service under severe weather conditions such as high waves. SOLUTION: A hemispheric projecting part is provided at a leading end of a pusher board, and a hydraulic cylinder 1 and a connecting shaft 2 which thus operates horizontally are placed over a center axis of it hemispheric radius R. A back end of the barge is provided with a recessed part in which the hemispheric projecting part at the leading end of the pusher boat can be fitted. Each sidewall of the recessed part has a vertical connecting groove 3 at a part corresponding to the center axis of the hemispheric radius R of the hemispheric projecting part provided at the leading end of the pusher boat. When the pusher boat is connected to or disconnected from the barge, the connecting shaft 2 of the pusher boat is inserted into or pulled out of the connecting groove 3 by operation of the hydraulic cylinder 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for connecting and disconnecting a pusher boat (push boat) which travels on water by itself and a barge boat which is pushed and moved by the pusher boat.

[0002]

2. Description of the Related Art Conventionally, the mainstream of a tugboat using a wire rope to tow a barge ship. Some of them are connected and disconnected by mechanical devices, but their use conditions are greatly restricted by weather conditions such as waves due to the complexity of the mechanism and the like, and the operation rate is reduced.

[0003]

Heretofore, there have been the following drawbacks. (A) When towing with a wire rope, it was extremely difficult to freely operate the barge ship side because the rope could not have a forcing force. (B) When towing by a mechanical device, the pusher ship and the barge ship repeat various movements respectively, so that the connection or disconnection work can be performed safely and in a short time under the conditions of the complicated movement form. And it was extremely difficult to navigate. (C) By any of the above (a) and (b),
Water conditions greatly change the wave conditions, etc., depending on weather conditions, so it is extremely difficult to keep the pusher ship and barge ship in a safe and secure connection state while absorbing the complex and powerful kinetic force to enable navigation. It was difficult.

[0004]

The means by which the present invention solves the problem will be described below. (A) FIG. 1 shows an installation state of the connecting device of the pusher ship. A hydraulic cylinder (1) and a connecting shaft (2) that operates in both the left and right directions are installed on the central axis of the hemispherical diameter R of the tip hemispherical convex portion. When connecting the pusher ship side and the barge ship side, the connection shaft (2) may be pushed out of the hemispherical diameter R by an appropriate stroke amount by the hydraulic cylinder (1). On the contrary, when the connecting shaft (2) is to be disengaged, the connecting shaft (2) may be pulled back inside the hemispherical diameter R by an appropriate stroke amount by the hydraulic cylinder (1). (B) FIG. 2 shows the rear end shape of the barge ship. A concave portion having a slight margin with respect to the hemispherical diameter R of the convex hemispherical portion of the pusher ship is set at the rear end of the barge ship. Further, a vertical connecting groove (3) is provided at a position corresponding to the central axis of the hemispherical diameter R on both side walls of the concave portion.
When connecting the pusher ship and the barge ship, the connection is completed when the connection shaft (2) on the pusher ship side is pushed out and inserted by the hydraulic cylinder (1) into the connection groove (3). In the case of disengagement, the connecting shaft (2) may be pulled back by the hydraulic cylinder (1) to the inside of the hemisphere diameter R on the pusher ship side.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (a) FIG. 3 is a conceptual diagram of a longitudinal movement when a pusher ship and a barge ship are connected. For all the possible forms of vertical movement, the connecting shaft (2) on the pusher ship and the connecting groove (3) on the barge ship
Are always equal within a certain range of the circular motion, and the state when both ships are connected can be maintained. (B) FIG. 4 shows a conceptual diagram of the lateral movement when the pusher ship and the barge ship are connected. As in the case of the longitudinal motion, the relative positional relationship between the two vessels is always equal within a certain range of the circular motion, and the state at the time of connection can be maintained. (C) FIG. 5 shows a conceptual diagram of a connection state when two barge ships are used. A hemispheric convex part, a hydraulic cylinder (1) and a connecting shaft (2) are installed at the tip of the first barge ship, and a concave part and a connecting groove (3) are provided at the rear end of the second barge ship. ) Allows double barge connection.
The connecting device can also be used for connecting other than a pusher ship and a barge ship, for example, a tugboat and a barge ship, or a plurality of other floating structures on water.

[0006]

The present invention has the above-mentioned structure, but has the following effects. (B) For each of the various vertical movements of both hulls, the movements are not restricted within the set range. (B) For each of the various lateral movements of both hulls, the movements are not restricted within the set range. (C) For the respective changes in the height direction of both hulls, that is, the draft difference, the amount difference is not restricted within the set range. (D) There is no restriction within the set range for the above-water change state of weather conditions such as waves. (E) Since the purpose can be achieved only by pushing or pulling back the connecting shaft by operating the hydraulic cylinder, the connecting and disconnecting operations are simple. (F) It can also be used to connect pusher ships to barge ships, tugboats to barge ships and other floating structures.

[Brief description of the drawings]

FIG. 1 is a plan view and a cross-sectional view in two directions of a connecting device installed on a center axis of a hemispherical diameter R of a convex hemispherical portion at a tip hemispherical shape.

FIG. 2 is a rear end view of a barge ship. FIG. 2 shows a plan view of a concave portion at the rear end and cross-sectional views in two directions. The hemispherical convex portion at the tip on the pusher ship side is inserted into the concave portion.

FIG. 3 is a conceptual diagram of a vertical motion in a connected state in which a pusher ship and a barge ship are connected.

FIG. 4 is a conceptual diagram of lateral movement in a connected state in which a pusher ship and a barge ship are connected.

FIG. 5 is a conceptual diagram in a case where two barge ships are connected. FIG. 5 is a plan view showing a state in which two barge ships are connected to one pusher ship.

[Explanation of symbols]

Reference Signs List 1 hydraulic cylinder 2 connecting shaft 3 connecting groove

Claims (1)

[Claims] 1. A connecting shaft (2) operated by a hydraulic cylinder (1) is provided on a center axis of a hemispherical diameter R of a pusher ship having a hemispherical convex end. On the other hand, at the rear end of the barge ship, there is provided a concave portion having such a size that the hemispherical convex portion at the tip of the pusher ship can just be inserted. further,
A vertical connecting groove (3) is provided at the axial center position of the connecting shaft (2) on the pusher ship side on both side walls of the concave portion.
Vertical connection groove of barge ship thus set (3)
Then, the connecting shaft (2) on the pusher ship side is pushed out and inserted and connected by the hydraulic cylinder (1). In the case of disengagement, the connecting shaft (2) may be pulled back to the pusher ship side by the hydraulic cylinder (1). As described above, the basic principle of the present invention utilizes a centroid motion. Since the rotational motion of the centroid always keeps the same distance relationship with the surface where the circumference contacts, the motion state of the two ships when they are connected on the water, especially the vertical motion and the lateral motion It has the feature of not constraining movement and vertical movement.