JPS595668Y2 - Movable deck support structure for ships - Google Patents

Description

[Detailed description of the invention] The car loading deck Dm of a so-called roll-on/roll-off ship that loads and unloads cars etc. by running under its own power is
Conventionally, as shown in Fig. 1, when a car is loaded, it is suspended by a link L on the back side of the fixed deck Df of the hull, and the car is loaded on top of it, and when no car is loaded, as shown by the solid line in Fig. 2. By folding the links L, the automobile loading deck Dm is suspended and stored directly below the back of the hull fixed deck Df.

Furthermore, in order to efficiently load vehicles of different vehicle heights on this movable vehicle loading deck, the link L can be extended as shown in a or b by attaching and detaching the pin P, as shown in Fig. 3. As shown, it is designed to be expandable and retractable in two stages so that it can be contracted.

However, when changing the height of the movable car deck Dm using such a two-stage link L, it is necessary to suspend the movable car deck Dm by the wire W and then attach and detach the bolt P. Since there are a large number of bolts, not only does the amount of work involved in attaching and detaching the bolts become large, but it is also difficult to avoid the risk of accidents caused by forgetting to insert the bolts, insufficiently tightening the nuts, etc.

The present invention was proposed in view of the above circumstances, and provides a movable deck support structure for ships that can safely and reliably quickly move and fix the movable deck to the upper and lower positions without having to attach or remove bolts. The object of the present invention is to provide an upper link having a hook-shaped guide hole, a lower link pivotally connected to the upper link by a connecting pin inserted through the hook-shaped guide hole, and the hook-shaped guide. It is pivoted to the upper link at a point above the hole and substantially on the vertical line of the center of gravity of the upper link, and the lower end extends diagonally downward and comes into contact with the tip of the beak-like projection of the bent part of the hook-shaped guide hole. The movable deck is suspended from the fixed deck via a suspension link consisting of a connecting pin guide member extending slightly beyond this, and the movable deck is suspended from the fixed deck via a suspension link formed by the connecting pin guide member. do.

To explain one embodiment of the present invention with reference to the drawings, Fig. 4A
, B, C, and D are partial side views showing the four stages of extending and contracting the link L' according to the present invention, and FIG. 4E is a longitudinal cross-sectional view taken along line E-E in FIG. 4C. It is.

In the above figure, 5 is a vertically long upper link formed by drilling a vertically long hook-shaped guide hole 8 into which a pin 6 (to be described later) is inserted.
In the hook-shaped guide hole B, the bent part b of the bent part extends towards the upper right from the tip part a of the bent part extending towards the lower left, and then it is reversed and becomes a part C directly below, which is slightly lowered. After a
-1) is bored as a through hole extending downward to the left in a direction d-e (see Fig. 4B).

e is an arcuate recess drilled below a, and g is the inner guide surface of the hook-shaped bent portion of the guide hole 8. Both work together with a, as described below. This is a beak-shaped protrusion that protrudes toward portion b so as to form a recess into which pin B fits.

Reference numeral 9 denotes a parallel lower link which is sandwiched between the hook-shaped guide hole 8 of the upper link 5 with an appropriate gap between the front and rear surfaces, and the upper part has a pin 6 inserted through the hook-shaped guide hole 8.
The lower parts are fixed to each other by pins 6' inserted into eye plates projecting from the movable deck Dm.

7 has its upper end above the hook-shaped guide hole 8 of the upper link 5 and is rotatably pivoted at a point 1' on the vertical line 9' of its center of gravity, and its lower end becomes a free end. The guide member extends downward to the right, crosses the bent part of the hook-shaped guide hole 8, and has its rear lower end that abuts the tip of the beak-like projection g and extends downward to the right, slightly beyond this, and the above-mentioned members work together. This constitutes the link E according to the present invention.

With a plurality of links L' having such a structure, the movable deck D
As shown in FIG. 1, the manner in which the movable deck Dm is raised and lowered by the movable deck support structure suspended behind the fixed deck Df of the hull will be explained as follows.

First, FIG. 4A shows a state in which the pin 6 of the lower link 9 fits into the upper recess a of the hook-shaped guide hole 8 of the upper link 5, so that the link L' has a short length and supports the load. shows.

In this state, if the movable deck Dm is moved upward by winding up the wire W shown in FIG. 1, the pin 6 of the lower link 9 will slide through the hook-shaped guide hole 8 toward b, as shown in FIG. Then, as shown by the broken line, it comes into contact with the guide member 7,
When this is rotated counterclockwise around the pivot point 7', it is guided by the guide surface of the guide member 7 and the beak-shaped protrusion g
It is brought to a position where it crosses the tip of the.

When the state shown in Figure B is reached, the wire W
When the movable deck Dm is moved downward by loosening the pin 6, the pin 6 passes over the tip of the beak protrusion g of the upper link 5, and then slides along the left guide surface of the hook-shaped guide hole 8, as shown in Figure C. After that, as shown in Figure D, it is fitted into the lower end recess e of the hook-shaped guide hole 8.

In this way, when the state shown in figure D is reached, the wire W
If the link L' is loosened, the link L' can support the load of the movable deck Dm in a state where it is extended by h compared to the state shown in Figure A.

Next, in order to move the movable deck Dm upward from the lower position to the upper position, the steps described above can be performed in the reverse order.

That is, in the state shown in Figure D, if the movable deck Dm is moved upward by winding up the wire W, the pin 6 will slide along the left guide surface of the hook-shaped guide hole B, as shown in Figure C. As shown in Fig. B, the guide member 7 is brought into contact with the guide member 7, and when the guide member 7 is pushed up in the counterclockwise direction, the guide member 7 reaches a position where the guide member 7 has passed over the beak-shaped protrusion g.

When the state shown in Figure B is reached, loosen the wire W, and the pin 6 will slide downward to the left along the upper end surface of the beak protrusion g and fit into the recess a, as shown in Figure A. Since they are seated together, the link L' supports the load of the movable deck Dm in a state where it is contracted by h compared to FIG. D.

When the movable deck Dm is moved up and down by the wire W, the center of gravity of the pin 6 is on the vertical line 9' of the center of gravity, and the pin 6 always slides along the guide surface of the hook-shaped guide hole 8 on the side closer to the vertical line 9' of the center of gravity. .

In short, according to the present invention, the upper link has a hook-shaped guide hole, the lower link is pivotally connected to the upper link by a connecting pin inserted through the hook-shaped guide hole, and the lower link has a hook-shaped guide hole. The lower end, which is pivoted to the upper link at a point above the vertical line of the center of gravity of the upper link, extends diagonally downward and abuts the tip of the beak-like projection at the bent part of the hook-shaped guide hole, and then slightly By suspending the movable deck from the fixed deck via a suspension link consisting of a connecting pin guide member extending beyond this, and by suspending the movable deck from the fixed deck via a suspension link consisting of a The present invention is extremely useful industrially because it provides a movable deck support structure for a ship that can be safely and quickly set up or down in a vertical position without the need for installation or removal work.

[Brief Description of the Drawings] Figure 1 is a perspective view showing the operating state of a movable deck support structure in a known car carrier, and Figure 2 is a side view showing the movable deck of Figure 1 stored on the back side of the hull fixed deck. Figure 3 is an enlarged view showing the link shown in Figure 1, where a is a front view in an extended state, b is a front view in a contracted state, and C is a side view of b, Figures 4A and B. , C, and D are explanatory diagrams sequentially explaining the action of the movable deck suspension link according to the present invention, and E is C.
It is a longitudinal cross-sectional view along EE of. Dm...Movable deck, Df...Fixed deck, L, L'...Link, P...Pin,
W...Wire, 5...Top link, 6
...Pin, 6'...Pin, 7...
...Guide member, 8...Hook-shaped guide hole, 9...
...Link below.

Claims (1)

[Scope of utility model registration request] an upper link having a hook-shaped guide hole, a lower link pivotally connected to the upper link by a connecting pin inserted through the hook-shaped guide hole, and a lower link above the hook-shaped guide hole of the upper link. a connecting pin guide member that is pivotally connected to the upper link at a point substantially on the vertical line of the center of gravity, has a lower end that extends diagonally downward, abuts against the tip of the beak-like projection of the bent portion of the hook-shaped guide hole, and then extends slightly beyond this; A movable deck support structure for a ship, characterized in that a movable deck is suspended from a fixed deck via a suspension link consisting of: