JPH0355396B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a container crane used for cargo handling such as unloading or shipping of containers.

(Problems of the Prior Art to be Solved by the Invention) When a container is unloaded using a container crane, the container lifted from the ship is placed on a car, trolley, etc. (hereinafter referred to as a transport vehicle) waiting on the ground. for unloading directly to the predetermined location of
A steady rest device for highly accurate positioning is required.
Moreover, the driver was also required to have a high level of operating skill. In addition, it took a long time to unload the container to completely stabilize it, resulting in poor work efficiency.

Therefore, the container lifted from the ship is temporarily suspended into a container crane (main crane) and placed there temporarily, and then this container is placed on standby at the bottom of the main crane by another crane built into the main crane (child crane). Container cranes have been considered that can be suspended from a conveyor truck (Japanese Patent Application Laid-open No. 125591/1983), but this type of container crane requires additional slave cranes and temporary storage areas, making the structure complicated and The rigidity of the frame of the parent crane has to be increased, making the whole structure expensive. If containers are positioned and loaded onto a transport vehicle by hanging them, the problem of poor work efficiency cannot be avoided.

(Purpose of the Invention) The present invention was devised to solve the above-mentioned problems of the conventional art. By adopting a method in which the material is positioned relative to the transport vehicle at the top and then transferred onto the transport vehicle, a complete sway stop is not required, and it is possible to quickly transfer onto the transport vehicle. The purpose is to improve work efficiency and reduce the burden on workers.

(Structure of the Invention) The container crane of the present invention has legs of a crane frame movable in the crane running direction, and
Temporary storage carts for temporary container storage that can be arranged adjacent to each other are connected, and a vertical positioning cart is installed at the side end of the temporary storage cart in the crane travel direction, facing opposite to the crane travel direction with the container placement area in between. Press plates are provided on opposite sides so as to be movable forward and backward, and press plates for lateral positioning are provided at both ends of the container placement area on the crane leg side of the temporary storage cart at the opposite leg in the direction perpendicular to the crane traveling direction. It is characterized in that it is provided on the side so as to be movable back and forth, and a transfer device is provided on the temporary storage cart for transferring the container to and from the transport cart.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings. In the drawing, 1 is a gate-shaped frame that can run on a track 3 laid along a quay 2, and 4 is a structure supported on the frame 1. 5 is a trolley that can traverse on a rail 6 laid along the girder 4, 7 is a trolley 5
A container 9 is suspended from inside the ship (not shown) by a trolley 5 via the spreader 7 via a hoisting wire 8, and suspended onto a temporary storage cart 10 placed directly below the trolley rail 6. It is configured so that it can be lowered.

Brackets 12 are provided on one leg portion 11 of the frame 1 at intervals in the traveling direction of the frame 1 (crane traveling direction), and the brackets 12 include a connection extending horizontally toward the temporary storage cart 10 side. A lever 13 is attached by a pin 14 so as to be able to swing up and down.
The temporary storage cart 10 is attached to a connecting lever 13 by a pin 15 at the side end of the one leg portion 11 of the frame 1, and is thus connected to the frame 1 via the connecting lever 13 so as to be movable integrally with the frame 1 in the crane traveling direction. ing.

In the longitudinal direction (crane running direction) central part of the temporary storage cart 10, there is a lip groove-shaped cross section 16 that opens toward the upper surface (container placement surface) and runs along the width direction of the cart.
is provided extending to the leg portion 11 side, and the lip groove cross section 16 is provided with upper and lower vertical guide rollers 17 and horizontal guide rollers 18, and can be moved by a drive device 19 via these. A traversing trolley 20 having a shape of 20 mm is provided. The drive device 19 includes a pinion 23 that is rotatable by a motor 21 via a worm gear mechanism 22, and a rack 2 that engages with the pinion 23.
4 are provided on the lip groove cross section 16 of the traversing truck 20 and the temporary storage truck 10, respectively. A pair of left and right cylindrical guide masts 2 are mounted on the transverse truck 20.
5 is integrally provided, and the guide mast 25
A motor cylinder 26 and a block 27 that is raised and lowered by the motor cylinder 26 are housed inside, and the block 27 is integrally provided with a fork 28 that extends toward the opposite leg portion 11 in the direction perpendicular to the crane traveling direction. ing. In this way, the container 9 placed on the temporary storage cart 10 is moved by the two left and right forks 2.
8 and is lifted up by the motor cylinder 26, carried out to the side opposite to the leg portion 11 by moving the traversing cart 20 by the drive device 19, and transferred onto the transfer cart 29 disposed adjacent to the temporary storage cart 10. A transfer device A is configured.

In order to prevent the fork 28 from interfering with the container 9 placed on the temporary storage cart 10, the fork 28 before being lifted up can be retracted below the level of the container placement surface of the temporary storage cart 10. It is preferable that the temporary storage cart 10 is provided with a fork storage groove. Further, it is preferable that the fork 28 is provided with a claw 30 that can be raised and lowered to prevent the container from moving on the fork 28.

At the end of the temporary storage cart 10 in the crane traveling direction,
A pressure plate 31 facing opposite to each other in the crane running direction with the container placement area in between is provided so as to be movable back and forth on the opposite side by a hydraulic cylinder 32. Thus, the container 9 is moved in the crane running direction via the pressure plate 31. The vertical positioning device B is configured so that it can be pushed and positioned relative to the transport vehicle 29. Further, a pressure plate 31' for lateral positioning is provided at the side end of the leg 11 of the temporary storage cart 10 so as to be movable back and forth in the direction opposite to the leg 11 in the direction perpendicular to the crane traveling direction by a pressure cylinder 32'. Thus, the lateral positioning device C is configured so that the container 9 can be positioned with respect to the fork 28 by pushing the container 9 to the side opposite to the leg portion 11 in the direction perpendicular to the crane traveling direction via the pressing plate 31'.

(Function) When unloading the container 9, the container 9 is first lifted from the ship via the spreader 7 by the trolley 5, moved to a position directly above the temporary storage trolley 10, and then unloaded onto the temporary storage trolley 10. I will do it. The container mounting surface of the temporary storage trolley 10 is formed in a size large enough to cover the final amount of swing of the container 9 when unloading, and the container 9 is placed on the temporary storage trolley 10. By performing the steadying, the container 9 can be quickly unloaded from the temporary storage cart 10.

Next, if the temporary storage cart 10 is provided with a relative position detection device for detecting the position of the transport cart 29, the vertical direction is determined based on a command from the detection device, or, if not provided, a command issued by the operator through visual detection. By activating the positioning device B and adjusting the movement of the container 9 on the temporary storage cart 10 in the crane running direction via the press plate 31, the transport cart 29 is moved.
The container 9 is positioned relative to the container 9. If necessary, the position relative to the fork 28 is adjusted by the lateral positioning device C.

Thereafter, the container 9 is slightly lifted up by the motor cylinder 26 via the left and right forks 28, and then the fork 28 is lifted up by the drive device 19.
The container 9 on the fork 28 is placed at a predetermined position above the carrier 29 by moving it a certain distance toward the carrier 29, and then the container 9 is placed on the carrier 29 by the motor cylinder 26. , a fixed protrusion 33 protruding from the carrier 29
By engaging the legs 34 of the container 9 with the legs 34 of the container 9, the container 9 is fixed on the carriage 29.

In this way, the temporary storage cart 10 is moved by the positioning devices B and C provided on the temporary storage cart 10 and the transfer device A.
The container 9 is quickly transferred from above onto the carrier 29, and the unloading work is thus completed quickly.

The fork 28 of the transfer device A is returned to its original position on the temporary storage cart 10 by the drive device 19 and the motor cylinder 26 after the work is completed.

Conversely, when loading the container 9 on the carrier 29, the container 9 is first transferred from the carrier 29 to the temporary storage carrier 10 by the fork 28 of the transfer device A, and then the container 9 is transferred by the vertical positioning device B. , performs positioning with respect to the spreader 7 suspended by the trolley 5. As a result, the container 9 on the temporary storage cart 10 can be quickly suspended into the ship by the trolley 5 via the spreader 7, so that the shipping work can be completed quickly.

(Effects of the Invention) As described above, the present invention connects a temporary dolly to one leg of a crane frame, and attaches a vertical positioning press plate, a horizontal positioning press plate, and a transfer device to this temporary dolly. Since it is very simple and inexpensive, it can be easily applied to existing equipment without complicating the crane frame or increasing its rigidity, and the equipment cost is also low. It ends up being In addition, by using the temporary storage trolley to stabilize the container and positioning and transferring the container using the positioning device and transfer device provided on the temporary storage trolley, loading onto the transportation vehicle can be speedy. By transferring the container onto a temporary storage trolley and positioning it against the spreader, the container can be quickly hoisted onto a ship, etc., reducing the burden on the operator while allowing container cranes to handle the container. It can improve the efficiency of work, and it can easily respond to the future trend towards automation of work.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention, and FIG.
The figure is an enlarged view of the main part of Fig. 1, Fig. 3 is a plan view of Fig. 2, Fig. 4 is a - sectional view of Fig. 3, Fig. 5 is a sectional view taken along the - line of Fig. 4, and Fig. 6 7 is a sectional view showing how the claws are attached to the fork, and FIG. 7 is a sectional view taken along the line ˜ of FIG. 3. 1... Frame, 4... Girder, 5... Trolley, 7
... Spretsuda, 8 ... Hoisting wire, 9 ... Container, 10 ... Temporary storage trolley, 11 ... Legs, 1
4, 15...Pin, 13...Connection lever, 16...
...Rip groove cross section, 17...Vertical guide roller, 1
8... Horizontal guide roller, 19... Drive device, 20...
...Transverse truck, 25...Guide mast, 26...Motor cylinder, 27...Block, 28...Fork, 29...Transportation cart, 31...Press plate, 32
...Hydraulic cylinder.

Claims (1)

[Claims] 1. A temporary storage trolley for temporary storage of containers is connected to the legs of the crane frame, and is movable in the crane running direction, and in which a transport trolley can be placed adjacently. Press plates for vertical positioning that face opposite to each other in the crane travel direction across the loading area are provided on opposite sides so as to be movable back and forth, and at both ends of the container loading area on the crane leg side of the temporary storage trolley. A transfer device is provided with a pressure plate for lateral positioning so as to be movable back and forth on the opposite leg side in a direction perpendicular to the crane traveling direction, and for transferring the container between the temporary storage cart and the transfer cart. A container crane characterized by being equipped with.