JPH09227093A - Crane for container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crane easily allowing the cargo handling of a container from the side face of the container. SOLUTION: This crane for a container is provided with a liftable/lowerable lift body 40 guided by columns 45 provided on a horizontal member 32 connecting the upper sections of four legs 31 installed with travel wheels and an L-shaped fork 61 at the lower section of an expansion/shrinkage device 60 installed on the lower face of the lift body 40. The fork 61 is moved in the width direction by the expansion/shrinkage device 60 for the cargo handling of a container C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane for loading and unloading containers, and more particularly to a lane not suitable for loading and unloading railway containers.

[0002]

2. Description of the Related Art In a railway container terminal, a large forklift supports the lower surface of the container for loading and unloading. At the railway container terminal, it is necessary to load and unload cargo under the overhead line, so the amount of lifting of the container is regulated, and safety considerations are required.

A rubber tire type crane or a straddle carrier at a terminal of a marine container hoist the upper surface of the container and travel at a position across a truck. For this reason, it cannot be used at railway terminals with overhead lines on the container. The following is a clay similar to the present invention described later. In Japanese Patent Application Laid-Open No. 55-11484, a movable body that moves in a direction perpendicular to the traveling direction is provided on the upper part of a gate-shaped traveling frame, and a lift for raising and lowering a gripping device is installed on the movable body. It is a thing. The moving body projects to the side surface of the traveling frame, and an object on the side surface can be lifted.

Explaining the difference between the one disclosed in Japanese Patent Laid-Open No. 4-89798 and the one disclosed in Japanese Patent Laid-Open No. 55-11484, a fork is installed instead of the gripping device. The fork cannot project to the side of the traveling frame and cannot support objects on that side. The fork is raised and lowered by changing the length of the four legs.

[0005]

The cargo handling of the container wagons under the overhead line is performed by a forklift that can be transferred from the side of the container. For the operation of this forklift, it is not possible to load and unload containers without making full use of forward, backward and switching operations.

[0006] It is an object of the present invention to provide a crane capable of easily loading and unloading a container from the side of the container.

[0007]

[Means for Solving the Problems] The above object is to install four legs on which traveling wheels are installed and inside the member which is located at the front and rear positions in the traveling direction by the traveling wheels and which connects the upper parts of the four legs. Two pillars, an elevating body that is installed between the pair of pillars, and that elevates and lowers using the pair of pillars as guides, an elongating and contracting device that is installed under the elevating body and expands and contracts in the width direction, This can be achieved by constructing the crane from an L-shaped fork that is installed on the most projecting member of the device and projects outwardly of the front legs when the telescopic device is projected.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A position embodiment of the present invention will be described with reference to FIGS. Along the railroad rail 10, there is a traveling path 20 for a crane 30. Above the railway rail 10, there is an overhead line 11.

The side surface of the traveling path 20 is a site 21 on which the container C is placed. The running path 20 is between the row of containers C on the site 21 and the rail 10. A freight car 15 carrying a container C is stopped on the rail rail 10. Also,
Empty freight car 15 is stopped. The container C on the site 21 is loaded with a loaded container C and an empty container C. Row of Containers C and Container C on Site 21
The traveling path 20 allows the crane 30 to carry cargo.

The freight car 15 can load the containers C in one stage. At the site 21, containers C are loaded in a maximum of two tiers. The crane 30 is a freight car 15, a road 20, a site 2
1 container C can be loaded. Container C on road 20
The cargo handling of the first-stage container C on the site 21 is substantially the same.

The crane 30 has a two-legged structure with four legs 31.
It is composed of one gate-shaped frame 33, two horizontal connecting members 32 connecting the upper parts thereof, and rubber tires 34 and the like at the lower parts of the four legs 31, respectively. A drive device 35 is connected to at least two rubber tires 34, and steering is also possible.

Two pillars 45, 45 are installed in the center of the inside of the horizontal members 32, 32 along a direction (width direction) perpendicular to the traveling direction of the crane. Pillars 45,4
The elevating body 40 moves up and down along 5. The elevating body 40 sandwiches the side surfaces (surfaces in the width direction) of the columns 45, 45 by the rollers 41, 41. A rack (not shown) is installed on the pillars 45, 45 along the vertical direction, and the lifting body 40 is installed on the rack.
It has a pinion (not shown). The elevating body 40 moves up and down by a rack and pinion. The lifting means may be a winch. The upper ends of the pillars 45, 45 are connected by a horizontal member 46, but the lower ends thereof are not connected.

A rotating device 50 is installed on the lifting body 40. The rotating device 50 suspends a telescopic device 60 which can freely expand and contract. The rotating device 40 can rotate the telescopic device 60 by 180 degrees. That is, the expansion / contraction direction of the expansion / contraction device 60 can be directed from one end side to the other end side in the width direction. As shown in FIG. 3, the expansion / contraction device 60 expands / contracts in four stages, for example. An L-shaped fork 61 on which the container C is placed is installed on the most protruding member 60d, that is, the lowermost member 60d. The fork 61 is installed on the most rear end side of the member 60d. The telescopic device 60 and the fork 61 project from the side surface in the width direction of the crane 30 and can be inserted between the freight car 15 and the like and the container C. The container C can enter between the upper surface of the fork 61 and the lower surface of the member 60d.

Legs 31 in the traveling direction of the crane 30,
The interval of 31 is larger than the longitudinal direction of the container C (the traveling direction of the freight car when loaded in the freight car 15). by this,
The container C can be taken into the crane 30 from the freight car 15. Legs 31 in the width direction of the crane 30,
The interval of 31 (the interval viewed from the traveling direction) is sufficiently larger than the width direction of the container C and the width of the truck 25 on which the container C is placed. The heights of the horizontal members 32 and 33 can travel across the containers C stacked in two stages. Also, the widthwise leg 3
A truck 25 on which the container C is placed can travel between 1 and 31. That is, the crane 30 has a gate shape in the width direction and the traveling direction.

The crane 30 includes an engine 70 and a driver's cab 71.
Is installed. Since the expansion / contraction device 60 projects in the width direction with the container C placed thereon, counterweights are installed inside the legs 31. If necessary, a support device for preventing the crane 30 from tilting is installed on the leg 31.
This support device is for lifting and lowering a seat that comes into contact with the ground by a cylinder device installed on a leg 31. When the seat descends, it hits the traveling path 20 and prevents the crane 30 from tilting. The cylinder device and seat may be installed on the outrigger.

A case of transporting from the freight car 15 to the truck 25 on the traveling path 20 in such a configuration will be described.
The traveling road 20 is caused to travel and the crane 30 is stopped at the position of the container C of the freight car 15. If necessary, the seat of the supporting device is lowered to support the crane. The supporting device operates at least the supporting device on the side on which the telescopic device 60 is projected.

The elevating device 40 stops the telescopic device 60 at the height of the lower surface of the container C of the freight car 15, and the telescopic device 6
0 is projected to the freight car 15 side. As a result, the fork 61 enters between the freight car 15 and the container C. Track 2
5 is inserted between the legs 31, 31 of the crane 30. next,
The elevating device 40 slightly raises the telescopic device 60, and then retracts the telescopic device 60. On track 25,
The elevating device 40 is lowered and placed on the truck 25. The retracted position of the expansion / contraction device 60 is the same as in FIG. At this time, the direction of the truck 25 and the direction of the container C are matched by the rotating device 50. Next, the telescopic device 60 is further retracted. As a result, the rear end of the member 60d projects toward the site 21 side. Pulls out the fork 61 from the container C. Truck 25 exits.

FIG. 2 shows a state in which the container C is placed inside the crane 30, that is, on the ground between the legs 31 and 31 (the traveling path 20).

The elevating device 40 includes a roller 41 contacting a pillar 45.
Since the forks 61 and the like do not touch in the width direction, the cargo can be easily handled on the narrow traveling path 20. Further, since the fork 61 is suspended from the telescopic device 60 that can project in both directions, the fork 61 can be projected from the crane 30 and the fork 61 can be pulled out from the container C in the fork 30. Since the fork 61 is installed at the rear end of the member 60c as viewed from the front end side of the fork 61, the length of the member 60c can be shortened and the turning radius of the rotating device 50 can be reduced.

In FIG. 1, cargo handling is performed between the row of containers C on the right side and the containers C by changing the direction of the crane 30 or the direction of the telescopic device 60 by the rotating device 50. Stacking on the second stage
Start from the road 20.

In the above embodiment, the fork 61 is moved in the width direction by the expansion / contraction device 60, but it can be moved slightly by moving the column 45 in the width direction.

[0022]

According to the present invention, when transferring from a container freight car or a truck, container handling can be performed with an easier operation than a forklift.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a state of a container crane according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the container crane of FIG. 1 in another state.

FIG. 3 is a right side view of FIG. 1;

4 is a perspective view of the container crane of FIG. 1. FIG.

[Explanation of symbols]

10 ... railway rails, 15 ... freight cars, 20 ... running paths, 30 ...
Crane, 31 ... Legs, 32 ... Horizontal member, 40 ... Lifting body,
45 ... Pillar, 50 ... Rotating device, 60 ... Telescopic device, 61 ... Fork.

Claims (4)

[Claims] 1. A four-legged vehicle having traveling wheels and front and rear positions in the traveling direction of the traveling wheels,
Two columns installed inside a member that connects the upper parts of the two legs, an elevating body that is installed between the pair of columns, and elevates and lowers using the pair of columns as guides, and is installed in the lower part of the elevating body, A crane for containers, comprising: an expansion / contraction device that expands / contracts in the width direction; and an L-shaped fork that is installed on the most projecting member of the expansion / contraction device and projects outwardly from the front legs when the expansion / contraction device is projected. 2. A member according to claim 1, wherein the most projecting member of the telescopic device is capable of projecting on both sides in the width direction, and the fork is installed at the rear end of the member when viewed from the tip side of the fork. It is a container crane. 3. The crane for containers according to claim 1, wherein the elevating body has a device for horizontally rotating the fork device. 4. The container crane according to claim 1, wherein the leg is provided with a seat that comes into contact with the ground so as to be able to move up and down.