JPS6234879Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bogie drive device, and more particularly to a hydraulic drive device for a bogie, which is suitable for use when stowing containers in the hold of a bulk carrier.

Generally, bulk cargo ships sail with a load on only the outbound trip, and on the return trip with an empty cargo and in ballast, so the transport efficiency is only 1/2.

Therefore, in order to increase transport efficiency, it has been considered to load containers on the return journey, but bulk carriers are equipped with hopper-shaped double-bottom tanks and topside tanks when viewed in cross section. Therefore, containers can only be loaded in the hold directly below the hatch opening, resulting in a problem of poor container loading efficiency.

Therefore, in order to make it possible to load containers into the hold at the bottom of the topside tank, it is also possible to load the container onto a trolley in the hold and then drive the trolley by pulling it with a cable. However, with such a bogie drive device, there is a problem that the diameter of the cable must be increased, making it difficult to handle, and additional equipment such as pulleys is required, which makes maintenance etc. time-consuming. There is a problem that it takes.

The present invention aims to solve these problems, and aims to provide a hydraulic drive device for a truck that can safely and reliably drive the truck using a fluid pressure cylinder.

Therefore, in the hydraulic drive device for a truck of the present invention, one end of each of the plurality of hydraulic cylinders of the truck is pivotally connected, and some of these hydraulic cylinders can be driven forward under the truck. It is characterized in that it is arranged so that it slopes backward, and the remaining part is arranged so that it slopes down and slopes forward so that it can be braked under the same truck.

Hereinafter, a hydraulic drive device for a truck as an embodiment of the present invention will be explained with reference to the drawings.
~Figure 5 shows a trolley equipped with this device,
Fig. 1 is a plan view showing the arrangement state, Fig. 2 is a schematic diagram enlarged from the - arrow direction of Fig. 1,
Fig. 3 is a plan view thereof, Fig. 4 is a schematic side view thereof,
FIG. 5 is an explanatory diagram showing a state in which the present truck is arranged in the hold of a bulk cargo ship.

As shown in FIG. 5, in a bulk cargo ship S, a truck 1 is installed so that it can be carried into the hold H through a hatch A, and containers 18 are loaded on the truck 1 in multiple stages. It's summery.

Note that a stacking frame 19 is provided between the containers 18.

By the way, as shown in each figure, on the lower surface of both sides of the trolley 1, there are a total of six trolley supports 11, three on the left and right.
Each trolley support base 11 is provided with rollers 12 as wheels that can be moved up and down. That is, by raising and lowering each roller 12 with the jack 14 via the pedestal 15, these rollers 12 can be respectively retracted into the truck support 11 or protruded from the truck support 11. ing.

Therefore, with the rollers 12 retracted into the truck support 11, the truck 1 can be seated and maintain a stable posture, and with the rollers 12 protruding from the truck support 11, the truck 1 can be seated and maintain a stable posture. , the bogie 1 can run along guide rails 21, 21'.

In addition, as shown in FIGS. 1 to 4, 12 hydraulic cylinders 4, 6 on each side, are installed on the lower surface of both sides of the truck 1, inside the area where the truck support base 11 is installed.
5, 6, 7, 8, 9; 4', 5', 6', 7',
8' and 9' are provided. That is, one end of each hydraulic cylinder 4 to 9; 4' to 9', in other words, the base end of each hydraulic cylinder rod 10 is connected to the bearing 2, respectively.
It is pivotally connected to the trolley 1 via.

For example, if the forward direction of the truck 1 is a, some of these hydraulic cylinders 4, 6,
8; 4', 6', and 8' are inclined downwardly to the rear so as to be able to perform forward drive below the bogie 1, and the remaining parts 5, 7, 9; 5', 7', and 9' are It is tilted forward so that it can be braked below 1.

In addition, each hydraulic cylinder 4 to 9; 4' to 9' has
A guide rod 13 is provided, and the guide rod 13 is guided by a guide 3 provided on the underside of the truck 1, so that each of the hydraulic cylinders 4 to 9; 4' to 9' It is designed to be able to rotate using a bearing 2 as a fulcrum.

Further, hydraulic cylinders 4, 6,
8; Engagement pieces 16A and 16'A that can be engaged with the working ends of 4', 6' and 9' are located on the path of the bogie 1 (bottom of the hold).
, a large number of hydraulic cylinders 5, 7, 9 are arranged in rows at predetermined intervals along the traveling direction of the truck 1, and also perform a braking operation;
Engagement piece 16 that can be engaged with the operating ends of 5', 7', and 9'
Similarly, a large number of B and 16'B are arranged in rows at predetermined intervals along the course of the bogie 1 (at the bottom of the hold) along the course of the bogie 1.

Note that the row of engaging pieces 16A, 16'A and the row of engaging pieces 16B, 16'B are arranged in parallel with each other with a slight interval. This is because some of the hydraulic cylinders 4, 6, 8; 4', 6', 8' and the remaining hydraulic cylinders 5, 7, 9; 5', 7', 9' are shown in Figures 1 and 3. This is because they are arranged slightly shifted from each other in the width direction of the truck 1.

In addition, the engaging pieces 16A, 16B; 16'A, 1
The arrangement interval of 6'B is selected to be the optimum interval depending on the stroke of the hydraulic cylinder and the height of the truck 1.

With the above configuration, when loading the container 18 into the hold H after unloading the bulk cargo,
First, the truck 1 is carried into the bottom of the hold through hatch A. At this time, the rollers 12 are retracted into the bogie support 11, so that the bogie 1 is seated in a stable position on the bottom of the hold.

Containers 18 are then loaded onto the cart 1 in multiple stages. At this time, the positioning of the container 18 and the trolley 1 is performed using a positioner 2 provided on the trolley 1.
Further, the securing of the containers 18 in the second and subsequent stages, that is, securing the containers 18 to each other, is performed by the stacking frame 19.

Note that the stacking frame 19 is guided by a guide column 17 erected within the hold H.

After the container 18 is loaded onto the trolley 1 in this way, the roller 1 is moved by the action of the jack 14.
2 is projected from a truck support stand 11 to move the truck 1 to the lower part of the top side tank T. The movement of the trolley 1 is performed in the following manner.

First, the set of hydraulic cylinders 4 and 5 is operated.
As a result, each hydraulic cylinder 4, 5 is connected to the guide rod 1.
3. Due to the action of the guide 3, the hydraulic cylinders 4 and 5 rotate about the bearing 2 as a fulcrum, and the operating ends of the hydraulic cylinders 4 and 5 engage with the engagement pieces 16A and 16B.

From this state, the drive hydraulic cylinder 4 is further operated to provide thrust to the truck 1. At the same time, the hydraulic cylinder 5 is tilted downward in the forward direction a.
performs a closing operation equivalent to the opening operation amount of the hydraulic cylinder 4, and as a result, the hydraulic cylinder 5 moves toward the bogie 1.
It serves as a brake to ensure safe driving.

Then, when the hydraulic cylinder 4 becomes fully open,
Next, the set of hydraulic cylinders 8 and 9 is operated, and the working ends of each hydraulic cylinder 8 and 9 are connected to the engaging pieces 16A and 16.
At the same time, the hydraulic cylinders 4 and 5 are brought into a fully closed state, and the operating ends of the respective hydraulic cylinders 4 and 5 are disengaged from the engagement pieces 16A and 16B.

Thereafter, as in the case described above, the driving hydraulic cylinder 8 is further operated to provide thrust to the truck 1, and the hydraulic cylinder 9, which is tilted downward with respect to the forward direction a, is made to perform a braking role. .

Furthermore, when the hydraulic cylinder 8 becomes fully open,
Next, operate the set of hydraulic cylinders 6, 7, and connect the working ends of each hydraulic cylinder 6, 7 to the engagement pieces 16A, 1.
6B, and the hydraulic cylinders 8, 9
is fully closed, and the working ends of the respective hydraulic cylinders 8 and 9 are disengaged from the engagement pieces 16A and 16B.

Thereafter, in the same manner as in the previous case, the driving hydraulic cylinder 6 is further operated to provide thrust to the bogie 1, and the hydraulic cylinder 7 tilted downward with respect to the forward direction a is made to perform a braking role. .

Thereafter, the above-mentioned operations are repeated in sequence for each hydraulic cylinder to move the trolley 1 to the top side tank T.
The ship is moved to a position at the bottom of the hold below the ship.

Note that the same operations as those for the above-mentioned hydraulic cylinders 4 to 9 are performed simultaneously for the other hydraulic cylinders 4' to 9' provided on the lower side of the truck 1.

Furthermore, the guide column 17 is provided with a notch 17a that allows the stacking frame 19 to pass through with the roller 12 protruding.
The trolley 1 loaded with containers 18 can move without being hindered by the guide support 17.

After the truck 1 has been moved to a predetermined position in this manner, the rollers 12 are retracted into the truck support 11, and the truck 1 can be seated stably.

Note that when the truck 1 is reversely moved to the bottom position of the hold directly below the opening of the hatch A in order to unload the container 18 on the truck 1, the forward direction is reversed, so the hydraulic cylinder 5 is used to drive the truck. ，
7, 9 are used, and hydraulic cylinders 4, 6, 8 are used for braking the bogie.

Further, the number of sets of hydraulic cylinders is appropriately determined in consideration of the spacing between the engaging pieces, the thrust of the hydraulic cylinders, and the like.

Furthermore, this device can be used for transporting containers in the hold of a bulk carrier, as well as for transporting heavy goods on land.

As described in detail above, according to the hydraulic drive device for a truck of the present invention, one end of each of a plurality of fluid pressure cylinders is pivotally connected to the truck, and some of these hydraulic cylinders are connected to the truck. It has a simple configuration in which the lower part is arranged to tilt backward so that it can be driven forward, and the rest of the part is arranged below the trolley so that it can be braked and tilted forward. It also has the advantage of being reliable.

[Brief explanation of the drawing]

The figure shows a hydraulic drive device for a truck as an embodiment of the present invention. Figures 1 to 5 show a truck equipped with this device, and Figure 1 is a plan view showing its arrangement. , FIG. 2 is a schematic diagram enlarged from the − arrow direction of FIG. 1, and FIG. 3 is a plan view thereof.
FIG. 4 is a schematic side view thereof, and FIG. 5 is an explanatory diagram showing a state in which the present truck is arranged in the hold of a bulk cargo ship. 1...Dolly, 2...Bearing, 3...Guide, 4-9,
4' to 9'... Hydraulic cylinder as a fluid pressure cylinder, 10... Rod, 11... Car support stand, 12... Roller, 13... Guide rod, 14... Jack, 15... cradle, 16A, 16B, 16'A, 16'B...Engagement piece, 17...Guide support column, 17a...Notch, 18...
Container, 19... Stacking frame, 20...
Positioner, 21, 21'... Guide rail, A... Hatch, H... Hold, S... Bulk cargo ship, T... Top side tank.

Claims (1)

[Scope of utility model registration request] One end of each of a plurality of hydraulic cylinders is pivotally connected to the truck, and some of these hydraulic cylinders are arranged to be tilted backwards so as to be able to be driven forward under the truck, and the rest are What is claimed is: 1. A hydraulic drive device for a truck, characterized in that the device is arranged so as to be able to brake downwardly and slope forward.