JPS6116647B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a container trolley for the purpose of reloading containers placed on a truck.

Transportation by truck has been increasing in recent years, but loading and unloading cargo from trucks has become a problem. These problems include (a) Trucks and their drivers are idle during loading and unloading operations.

(b) Loading and unloading can be concentrated temporarily,
Labor must be concentrated, and at other times there is a surplus of such labor.

(c) Each truck has a waiting time for loading and unloading, making the delivery area more likely to become crowded and requiring a large area.

(d) There is a waiting time for trucks at each point of departure and arrival, which lengthens the cycle time for trucks to return and return.

(e) With the spread of the five-day week, trucks will be unable to operate for two days if they are loaded on the eve of a holiday.

etc. can be mentioned.

In order to solve these problems, a container-type transportation method has been used in which removable containers are placed on trucks, and only those containers are stacked and unloaded at departure and arrival points. In this method, cargo is loaded into the container in advance,
Once the truck arrives at the work site, the container can be reloaded and the work can be completed in a short time.

In this container-type transportation method, a forklift was used to stack and unload containers on trucks, but in order to use a forklift to lift containers, the strength of the container had to be strengthened. The disadvantage was that the weight increased and the price increased. Furthermore, since a forklift can only lift a container from the side, a large area is required to lift and move a container using a forklift, and a dedicated operator is also required. Furthermore, containers unloaded by forklifts cannot be moved, and once unloaded, containers become a hindrance to other operations.

In addition, fixed legs that can move up and down are installed at the four corners of the container, and these fixed legs can lift the container.
There is also a method of separating the truck in its lifted state. However, this method has the drawback that the container after being separated cannot move on its own and is fixed in place, making it inconvenient for later maintenance work.

In view of the above-mentioned drawbacks, the present invention provides a container truck that can reload containers without using a forklift by using a self-propelled truck for reloading containers.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing this embodiment, and the whole is composed of a U-shaped outer frame 1 with an open end on one side and a rectangular inner frame 2.
is inserted into the open end of the outer frame 1 so that it can move forward and backward. A vehicle body is formed by an outer frame 1 and an inner frame 2. (Outer frame 1 and inner frame 2
A roller is interposed between them, allowing them to move easily. )Both sides of the lower surface of outer frame 1,
Wheels 3 are mounted on both sides of the lower surface of the inner frame 2,
4 is pivotally supported, wheels 3 are for driving, and wheels 4 are for steering. Wheel 3 on the side of outer frame 1
A fixed leg 5 operated by hydraulic pressure is attached to a position close to the outer frame 1, and two rows of rollers 6 are pivotally supported on the upper surface of the outer frame 1 at intervals. Further, an operating device 7 is attached to the outer surface of the outer frame 1, and a differential device 8 for rotating the wheels 3, a hydraulic motor 9, and a extraction pressure generating device 10 are provided at the lower part. Pivot supports 11 and 12 are fixed to the center of the front and rear ends of the upper surface of the inner frame 2, respectively.
2 has an operating shaft 13 of approximately the same length as the inner frame 2.
is rotatably supported. An engagement piece 1 as an engagement mechanism is provided at the tip of the operating shaft 13 on the shaft support 11 side.
4 is fixedly attached thereto, and a handle 15 is fixedly attached to the other end of the operating shaft 13. Although not shown, a steering mechanism is provided on the lower surface of the inner frame 2, which is operated by hydraulic pressure and can change the direction of the wheels 4. Further, a hydraulic cylinder 16 serving as an operating mechanism is provided, which is located on the upper surface of the outer frame 1 and the inner frame 2, and whose both ends are connected to the outer frame 1 and the inner frame 2, respectively.

Next, the operation of this embodiment will be explained.

In order to operate this container truck, first, hydraulic pressure is generated by the extraction pressure generating device 10. The extraction pressure generating device 10 is operated by a battery, a motor, a gasoline engine, etc., and by supplying hydraulic pressure to various parts, the wheels 3 can be rotated, the fixed legs 5 can be moved up and down, the wheels 4 can be rotated in the turning direction, and the hydraulic The cylinder 16 is expandable and retractable. When the hydraulic cylinder 16 contracts, the inner frame 2 enters into the outer frame 1, and the second
The shape will be as shown in the figure. At this time, the engagement piece 14 is located at the left end of the outer frame 1. Furthermore, when the hydraulic cylinder 16 is extended, the inner frame 2 is extended more than the outer frame 1, and as shown in FIG.
similarly moves to the right.

Next, the process of transferring the container 18 from the container truck 17 to the container trolley 19 will be explained in order with reference to FIG. The container truck 17 is capable of removably mounting a box-shaped container 18, and has a structure in which a plurality of rollers (not shown) are pivotally supported on the top surface of the loading platform, and the container 18 can be moved in its length direction. ing. This container truck 17
can be fixed by a mechanism not shown when the container 18 is transported.

(A) Move the container truck 17 to a predetermined position, maintain it in a horizontal state, and fix it. The container truck 19 is moved so that the tip of the container truck 19 (the side on which the fixed legs 5 of the outer frame 1 are provided) comes into contact with the rear end of the container truck 17. In moving the container truck 19, by supplying hydraulic pressure to the hydraulic motor 9, the rotation of the hydraulic motor 9 is transmitted to the wheels 3 via the differential device 8, and the container truck 19 is moved. Steering during movement is performed by changing the direction of the wheels 4 using hydraulic cylinders (not shown).

(B) Container truck 17 and container trolley 19
If they make contact, the fixed legs 5 are lowered and the container trolley 19 is fixed. The fixing mechanism of the container truck 17 is released, the container truck 17 and the container 18 are disengaged, and then the handle 15 is released.
to rotate the actuating shaft 13, and the engaging piece 14
hook on the rear of container 18. Then, the hydraulic cylinder 16 is extended to pull out the inner frame 2 from the outer frame 1, and the engaging piece 14 is moved together with the operating shaft 13 to move the container 18 in the direction of the outer frame 1. A pair of rails (not shown) are fixed to both sides of the lower surface of the container 18, and by engaging the rails on the rollers 6, the container 18 can be easily transferred.

(C) Approximately half the length of the container 18 is the outer frame 1
Once moved upward, the handle 15 is rotated to release the engagement between the engagement piece 14 and the container 18, and then the hydraulic cylinder 16 is contracted to draw the inner frame 2 into the outer frame 1.

(D) Once the container trolley 19 has been reduced to the minimum length, rotate the handle 15 to engage the engagement piece 14 with the bottom surface of the container 18, and extend the hydraulic cylinder 16 again to remove the container 18. Move it to frame 1. By moving the inner frame 2 to a predetermined length, the container 18 is completely transferred onto the outer frame 1.

(E) Raise the fixed legs 5, release the fixation of the container truck 19, and operate the hydraulic motor 9 to make the container truck 19 move on its own with the container 18 placed thereon, and move it away from the container truck 17. .

In the manner described above, the container 18 can be transferred from the container truck 17 to the container trolley 19. To transfer the container 18 from the container truck 19 to the container truck 17, follow the steps above.
You can do it in the reverse order of (A) to (E).

In this embodiment, the hydraulic cylinder 16 is used to extend and contract the inner frame 2, but the present invention is not limited to this embodiment, and other conventionally known configurations can be used to extend and contract the inner frame 2. be able to. For example, the container 18 can be moved by providing a drive mechanism on the wheels 4, keeping the wheels 3 fixed, and driving only the wheels 4 so that only the wheels 4 and the inner frame 2 are self-propelled.

Since the present invention is configured as described above, the length of the container trolley can be expanded and contracted, and containers can be reloaded by the expansion and contraction operation.
Since a forklift is not used in this container transshipment, there is no need for a large area for the forklift to operate, and there is no need for dedicated workers. In addition, the overall length of the container trolley can be shortened when no containers are being placed on it.
The turning radius during movement is reduced, making it easier to move and requiring less space for storage.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
FIG. 3 is a side view showing the same as above in a state where the total length is shortened, FIG. 3 is a side view showing the same as above in a state where the full length is extended to the maximum, and FIG. 4 is an explanatory view showing transshipment of the container. 1, 2... Outer frame and inner frame as a vehicle body, 3, 4... Wheels, 14... Engagement piece as an engagement mechanism, 18... Container.

Claims (1)

[Claims] 1 A vehicle body that can be freely expanded and contracted in the length direction by an outer frame and an inner frame, wheels that are pivoted on the lower part of the outer frame, wheels that are pivoted on the lower part of the inner frame, and the upper surface of the inner frame. a plurality of rollers that are pivotally supported so as to be able to roll in the longitudinal direction; an engagement mechanism that can engage with the lower part of the container placed on the top surface of the inner frame; and a mechanism that allows the outer frame and the inner frame to slide. A container trolley characterized by comprising an extension mechanism capable of extending and contracting the length of the vehicle body.