JPS6148472B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevating ramp that connects an upper deck and a lower deck in a vehicle transport vessel or the like, that is, an elevating rampway device.

BACKGROUND ART Conventionally, as this type of elevating rampway device, the one shown in FIG. 1 has been known.

In the figure, the lamp 2 has its proximal end rotatably supported on the upper deck 1 via a hinge 3, and the other end is a free end that can move toward and away from the lower deck 1'.

In addition, the upper surface near the base end of the lamp 2 is connected to a hinge 3.
An inclined surface 2a is formed in the direction approaching the lower deck 1', whereas the lower side near the free end is lower than the lower deck 1' when descending.
The oblique side portion 2b is formed so as to reduce the step formed between the two, and a pin hole 7 that engages with a fixing stopper pin 5 is provided on the end surface.

The stopper pin 5 is connected to a piston rod 6 of a hydraulic cylinder 4 provided on the back side of the upper deck 1 at a position opposite to the free end of the lamp 2 when it is retracted.

Further, the lower deck 1' is also provided with elevating ramp way devices including the ramp 2' in the same way as described above so as to be continuous with the ramp 2 during descent, and in this way each of the upper and lower decks 1, 1' Furthermore, it is designed to communicate with the lower deck 1''.

With the above configuration, when storing this elevating rampway device, the ramp 2 is lifted horizontally by a hydraulic device (not shown), and then the stopper pin 5 is engaged with the pin hole 7 by operating the hydraulic cylinder 4. Twist and secure.

When lowering the ramp 2, the above procedure is reversed.

In addition, the sloped surface 2a of the ramp 2 disperses the protrusion that is formed between the base end and the upper deck 1 when the ramp 2 is lowered, so that vehicles passing through this area do not hit their belly. I have to.

By the way, in such a conventional elevating rampway device, when the ramp 2 is lowered, a stepped portion 8 is created between it and the lower deck 1', so vehicles cannot smoothly pass through this portion. Therefore, there was a drawback that the efficiency of cargo handling work decreased.

As already explained and shown in detail in FIG. 2, in fixing the lamp 2 in the retracted state, a stopper pin 5 operated by a hydraulic cylinder 4 is engaged with a pin hole 7 provided in the lamp 2. Due to the structure, there is room for these devices to be installed.
This is because the so-called minimum deck depth h must be taken into account.

In other words, for the sake of ensuring the minimum decking depth h,
There is a limit to how thin the free end portion of the lamp 2 can be made, and the stepped portion 8 remains by that much.

Further, returning to FIG. 1, if the upper lamp 2 is lowered while the lower lamp 2' is in the retracted state, the base end of the lamp 2' that is continuous with the free end of the lamp 2 will be Since an inclined surface 2a' is also formed on the upper surface of the vicinity, the descending ramp 2
There was a problem in that a rather large angle change portion was created via the stepped portion 8 in the portion sandwiched between the slope of the slanted surface 2'a and the slope of the sloped surface 2'a.

In this way, in conventional elevating rampway devices, there were large angle changes and stepped sections in the continuous parts of the upper and lower ramps, so when moving the vehicle between the upper and lower ramps, it was necessary to avoid hitting the vehicle on its belly or running over it. This required careful attention, which hindered smooth loading and unloading and reduced the effectiveness of cargo handling operations.

SUMMARY OF THE INVENTION The present invention provides a lifting rampway device for ships that eliminates the drawbacks of the conventional flap by providing a flap via a hinge that is movable up and down relative to the free end of the ramp.

The present invention will be described below based on embodiments shown in the drawings.

3 to 5 are side views showing essential parts of an embodiment of the present invention.

First, FIG. 3 shows the vicinity of the free end of the ramp 2 in the retracted state of the elevating rampway device according to the present invention.

In the figure, the wedge-shaped flap 10 is integrated with a flap arm 10b and a stopper arm 11 protruding from the back side of the lamp 2, and is freely rotatable around a hinge pin 12. The free end is passed through a long hole 13 provided in a substantially vertical direction, so that it can move freely up and down.

A landing surface 10a is provided below the flap 10, and a flange 1 is provided above the end of the stopper arm 11.
1a are provided respectively.

Further, the auxiliary flap 14 is rotatably attached to the upper surface near the free end of the lamp 2 via an auxiliary flap hinge 15.

With the above configuration, in the retracted state (FIG. 3), the hinge pin 12 is supported at the lowest end of the elongated hole 13 by the weight of the flap 10, while the flange 11a of the stopper arm 11 is in pressure contact with the back side of the lamp 2 to prevent the flap from moving. 10 from sagging.

In other words, the flap 10 is supported by the hinge pin 12, which has moved to the lowermost end of the elongated hole 13, and the flange 11a of the stopper arm 11, and is fixed at the illustrated position.

Therefore, by forming this state, the minimum depth of the deck is sufficiently ensured, and there is also room for providing the airtight packing 16.

Next, the fourth example is about the case where ramp 2 is lowered.
This will be explained based on FIG.

First, FIG. 4 shows the case where the upper lamp 2 is lowered while the lower lamp 2' is in the retracted state.

In the figure, a hypotenuse portion 2 provided at the free end of the lamp 2
b is in contact with the lower deck 1', while the landing surface 10a of the flap 10 is in contact with the inclined surface 2'a of the lower ramp 2'.
It is in a state where it hits and is lifted upwards.

That is, at this time, the hinge pin 12 moves upward in the elongated hole 13 and the flap 10 rotates around the hinge pin 12, so the landing surface 10a of the flap 10 comes into surface contact with the inclined surface 2'a. can adapt to close-contact situations.

The inclined surface 2'a is therefore supplemented by a wedge-shaped flap 10, which forms approximately the same plane as the horizontal part of the ramp 2'.

As a result, the difference in the angle of change between the ramp 2 and the inclined surface 2'a is reduced, and since the flap 10 is raised to the same position as the free end of the ramp 2, both ramps 2'a , 2' are connected in a smooth manner.

In addition, the auxiliary flap 14 is connected to the lamp 2 and the flap 1.
0 and serves to further facilitate the connection between the two.

Next, FIG. 5 shows a case where the upper ramp 2 is further lowered while the lower ramp 2' is in the lowered state.

In this case, as described above, as the lower ramp 2' descends, the flap 10 moves the hinge pin 12 in the elongated hole 13 and rotates around the hinge pin 12, thereby moving the flap 10 between the landing surface 10a and the inclined surface. It tilts together with the lower lamp 2' while maintaining close contact with lamp 2'a.

As a result, the lamp 2 is coplanar with the lamp 2' via the flap 10, so that a smooth connection is achieved between the two lamps 2, 2'.

By the way, when the ramp 2 is lowered and connected to the lower ramp 2', the landing surface 10a of the flap 10 is
is always in surface contact with the inclined surface 2a.

On the other hand, in this state, the hinge pin 12 is inserted into the elongated hole 1.
It is in the middle of 3.

Therefore, when a vehicle passes over the flap 10, its weight is transferred to the inclined surface 2' via the landing surface 10a.
Since it is uniformly dispersed in a, it is possible to obtain an elevating rampway device that has excellent durability and is advantageous in terms of strength design.

As described above, this invention provides a flap at the free end of the lamp via a long hole hinge, thereby ensuring a minimum deck depth and forming a smooth connection between the upper and lower lamps when the lamp descends. This has the effect of smoothing the passage of vehicles and improving the efficiency of cargo handling operations.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a conventional elevating rampway device, and FIG. 2 is an enlarged sectional view of a lamp fixing portion of the device. 3 to 5 are side views of essential parts for explaining the operation of an embodiment of the present invention. 1... Upper deck, 1'... Lower deck, 2... Lamp, 3... Hinge, 4... Hydraulic cylinder, 5
... Stopper pin, 6 ... Piston rod, 7
...Pin hole, 8...Step, 10...Flap,
11... Stopper arm, 12... Hinge pin, 13... Long hole, 16... Airtight packing.

Claims (1)

[Scope of Claims] 1. An elevator rampway device comprising a ramp whose base end is rotatably supported on the upper deck and forms a slope as necessary between it and the lower deck,
1. A lifting rampway device, characterized in that the free end of the ramp is provided with a flap, and the flap is connected to the ramp via a hinge whose center of rotation can move up and down. 2. The lifting rampway device according to claim 1, wherein the hinge of the flap is configured such that a hinge pin is supported by an elongated hole.