JPS6127358Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a car carrier that has a ramp that can be raised and lowered from the deck where cars board to the upper deck where the cars are stored, and a link that can fold this ramp into the lower deck surface. This device relates to a ramp device that can be moved up and down via a mechanism, and in particular, when loading a car, the ramp is kept tilted so that it can be used as a vehicle running path, while when not in use, the ramp can be moved up and down. The lower side of the movable ramp can be lifted and used as a storage space for automobiles.

On car carriers, a ramp is installed from the deck where cars board to the storage deck inside the ship, and cars are loaded onto each deck like a multi-storey parking lot, but if this ramp is left as it is, the slope will be Cars cannot be stored underneath. Therefore, the vehicle storage space of the whole ship will be reduced, so it is possible to make this ramp movable so that it can be raised and lowered, so that when necessary (when not in use) it can be lifted and cars can be loaded under the ramp. It is often required to do so.

For this reason, various ramp devices have been proposed and used in the past in order to meet such demands, but these devices have the following problems, and improvements have been desired. First, in the conventional type shown in Fig. 6, a ramp S is suspended from the upper deck by a wire W, and the wire W is fed out or pulled through a jigger cylinder J to raise and lower the ramp. be. When installing this device, it takes a lot of time to position the wire and the jigger cylinder that controls the wire, and when adjusting it, it is difficult and labor-intensive because the installation location is behind the ceiling. The work environment is also bad because the work place is a closed space. Furthermore, since a large amount of wire is used, the amount of processing required for the wire ends is large.Furthermore, from a safety perspective, this wire must be replaced at regular intervals, which poses severe constraints in terms of maintenance. .

Furthermore, as another structure, a movable ramp lifting support device as shown in FIG. 7 has been proposed. However, when this device raises the slope main body S, the rod end E extending from the cylinder _C3 serving as a support leg is fitted into a pot-shaped receiving hole F provided in the lower deck to raise the slope main body. In this device, the cylinder
Since cylinder _C3 receives the operational reaction force of the ramp body, cylinder _C3 is easily damaged by the bending moment, and if damaged, the rod will no longer move. Furthermore,
In order to store cylinder C ₃ on the back of the slope main body,
This had drawbacks such as requiring a separate auxiliary cylinder _C4 and increasing manufacturing costs.

The present invention solves the above-mentioned drawbacks of the conventional type and allows the underside of the movable ramp to be used as a storage space for automobiles. It is equipped with a push-up device. This lifting device has a simple configuration consisting of one link device and one cylinder device, and since this lifting device can be installed on the lower deck surface, installation work and maintenance are easier compared to conventional ones. It is extremely easy to do this, and it also has the advantage that it can be folded and stored inside the deck when not in use without using two or more cylinders, and does not pose any hindrance to the running of the vehicle.

The configuration of the present invention will be explained below based on the illustrated embodiments. FIG. 1 shows a deck, a ramp, and an upper deck for vehicles to board in a car carrier, and is an example in which the ramp device of the present invention is installed on the boarding deck. In other words, number 1 in the figure
2 is the upper deck, and 2 is the lower deck which is the boarding deck for the vehicle. 3 is a movable ramp hinged to the upper deck 1, and the upper deck 1 is connected via the ramp 3.
A car rides on top of it.

A recess 4 with an open upper surface is formed in the lower deck 2 directly below the movable ramp 3 as shown in FIGS. 2 and 3. A cylinder mechanism 7 consisting of a long push-up arm 5 and a short support arm 6 which are pivotally connected to each other so as to form a substantially Y shape is installed in this recess. The push-up arm 5 is formed to be longer than the interlayer distance between the upper deck 1 and the lower deck 2, and is arranged so as to be able to rise and fall freely in the vertical direction of the movable slope 3 with the lower deck as a reference plane. One end of a support arm 6 having about half the length of the push-up arm 5 is pivotally supported in the middle of the lift arm 5, and the other end is rotatably fixed to a fixed shaft 4' in the recess 4. Further, a hydraulically driven cylinder 8, for example, is fixed in the recess 4 alongside the link mechanism 7, and the end of a cylinder rod 9 that expands and contracts with the cylinder is pivotally connected to one end of the push-up arm 5.

Note that, unlike the above embodiment, the end of the cylinder rod 9 and the end of the support arm 6 may be pivotally connected as shown in FIG. However, in this case, one end of the push-up arm 5 is rotatably fixed to a fixed shaft 4' within the recess 4.

Incidentally, reference numeral 10 is a roller attached to the tip of the push-up arm, and this roller 10 pushes up the back side of the movable ramp 3 to move the ramp upward toward the upper deck 1, or to hold the ramp. and move it downward toward the lower deck 2. Further, reference numeral 11 is a wedge cylinder attached to the tip and both sides of the movable ramp 3, and 12 is a flap.

Next, the operation of the present invention configured as described above will be explained. First, move the movable ramp 3 shown in Figure 1 to the upper deck 1.
Regarding the case where the link mechanism 7 is folded and stored in the recess 4 provided in the lower deck 2 as shown in Fig. 4, the rod 9 of the cylinder 8 is extended, and the Figure 3 or 5
Raise the push-up arm 5 upward as shown in the figure.
In this way, the link mechanism 7 as a whole gradually becomes Y
As it expands to form a shape, the tip roller 10 of the push-up arm 5 comes into contact with the back surface of the movable ramp 3, and the rod 9 of the cylinder 8 is further extended until the movable ramp 3 reaches the state shown in FIG. is pushed up by the push-up arm 5. And this movable slope 3
When the upper deck 1 and the upper deck 1 are at the same level, the wedge cylinder 11 is actuated and its cylinder rod is engaged with the upper deck 1 to hold the movable ramp 3.

Once the movable ramp 3 is set on the upper deck 1 in this way, the rod 9 of the cylinder 8 is then retracted, and the entire link mechanism 7 is folded into the recess 4 of the lower deck 2 as shown in Fig. 4. Store it. Note that a lid 13 is attached to the upper surface of the recess 4, thereby eliminating unevenness that becomes an obstacle when a vehicle runs on the lower deck 2.

On the other hand, when resetting the movable ramp 3 onto the lower deck 2, the link mechanism 7 and the cylinder 8 are operated in the reverse order to the procedure used when setting it onto the upper deck 1. That is, first, the rod 9 of the cylinder 8 is extended to bring the roller 10 at the tip of the push-up arm 5 into contact with the back surface of the movable ramp 3 as shown in FIG. 3 or 5, and the wedge cylinder 11 is activated. to disengage the rod from the upper deck. Next, if the rod 9 of the cylinder 8 is slowly retracted and the entire link mechanism 7 is folded, the movable ramp 3 supported by the tip of the push-up arm 5
gradually tilts downward. After the flap 12 at the tip of the movable ramp is supported by the lower deck 2, the rod 9 is further retracted into the cylinder 8, and the link mechanism 7 is folded into the recess 4 of the lower deck 2 as shown in FIG. It is stored.

As described above, the device of the present invention has a very simple structure, so that the installation is easier than that of the conventional device using a suspension wire, and the manufacturing cost is significantly lower. Moreover, the link mechanism, cylinder, and other main devices are all installed on the lower deck, which improves the installation workability and is advantageous in terms of maintenance. In addition, the link mechanism and cylinder can be folded and stored within the lower deck, so not only does it look good, it does not reduce the vehicle storage space, and it does not become an obstacle when boarding the vehicle.

In addition, according to the present invention, the structure is such that the reaction force during ascending and descending of the slope is not directly received by the cylinder rod, but is received by the link mechanism, so there is no damage to the cylinder, and therefore, the cylinder operates reliably and the equipment The number of failures is reduced, durability is improved, and economical effects are also high.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a movable ramp installed between the upper deck and the lower deck, FIGS. 2 and 3 are schematic side views showing different states of the ramp device of the present invention, and FIG. FIG. 5 is a schematic side view of a different embodiment, and FIGS. 6 and 7 are a perspective view and a side view of a conventional type. 1: Upper deck, 2: Lower deck, 3: Movable ramp,
4: recess, 5: push-up arm, 6: support arm,
7: link mechanism, 8: cylinder, 9: cylinder rod, 10: roller, 11: wedge cylinder, 12: flap, 13: lid.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a car carrier having a plurality of decks for storing cars, the upper deck is hinged to a movable ramp that connects with the lower deck and serves as a vehicle running path, and A push-up arm, which is longer than the interlayer distance between the upper deck and the lower deck, and a push-up arm, which is shorter than the push-up arm, and has one end in the middle of the arm, are installed in a recess with an open top formed in the lower deck directly below the movable ramp. A link mechanism consisting of a pivotally supported support arm, and a cylinder serving as a driving source for the link mechanism are installed alongside the link mechanism, and a movable end of either the push-up arm or the support arm is attached to the rod end of this cylinder. and then move the other end of the push-up arm in the up-and-down direction of the movable slope,
A ramp device for a car carrier, characterized in that it can be raised or raised freely using the lower deck as a reference plane. (2) The ramp device for a car carrier according to claim 1, wherein the push-up arm has a roller at the end thereof that contacts the movable ramp.