JPH10250985A - Multi-purpose crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-purpose crane in which unloading work of bulk cargo as well as containers can be efficiently performed. SOLUTION: This crane is provided with a leg part 3 which moved on a quay 1, a girder 4 provided on a toppart of the leg part 3, a boom 5 pivot ally supported on a tip part of the girder 4 to be inclined, a trolley 6 to transversely move along the girder 4 and the boom 5, a head block 7 which is suspended from the trolley 6 to be capable of elevation and on which a glove bucket 10 or the like can be installed, a beam 16 extended from the inside of the leg part 3 to the land side, a hopper 14 movable along the beam 16, and a conveyor 15 extended from right under the hopper 14 to the land side of the leg part to be integrally movable with the hopper 14. Bulk cargo 9 discharged from the glove bucket 10 are moved through the hopper 14 to the conveyor 15 to be continuously transferred by the conveyor 15 to the land side of the quay 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multipurpose crane in which a hopper and a conveyor are movably provided on the legs of a bridge crane (a container crane).

[0002]

2. Description of the Related Art FIGS. 3 to 5 show an example of a conventional bridge crane (container crane). The bridge crane (container crane) moves along a rail 2 laid on a quay 1. A traveling leg 3, a girder 4 provided horizontally on the top of the leg 3 so that a base-end portion protrudes largely toward the land side, and a girder 4 pivotally supported by the distal end of the girder 4 and is horizontal to the girder 4. And a boom 5 that can be tilted between a cargo handling position protruding toward the sea side and a rest position standing upright with respect to the girder 4, and the girder 4 and the boom 5 when the boom 5 is set at the cargo handling position. Trolley 6 that runs along
And a head block 7 suspended from the trolley 6 so as to be able to move up and down. The head block 7 has a spreader 8 capable of locking a container 11 or a spread cargo 9 such as coal or ore. Can be mounted.

When loading and unloading the container 11 by the above-described bridge type crane (container crane), FIG.
As shown in the figure, the spreader 8 is mounted on the head block 7, the boom 5 is set to the cargo handling position horizontally connected to the girder 4, and the trolley 6 traverses the girder 4 and the boom 5, and the head block 7 moves with respect to the trolley 6. By a combination of a lifting operation, a locking operation of the spreader 8 with respect to the container 11 and an unlocking operation, the container 11 is unloaded from a berthing container ship (not shown) or the container 11 is moved from the quay 1 to the ship. Perform loading work.

[0004] When the cargo 9 is loaded, the grab bucket 1 is attached to the head block 7 as shown in FIG.
0, and the movable hopper 13 capable of temporarily storing the scattered cargo 9 and cutting out the scattered cargo 9 to the bed of the truck 12 is connected to the sea-side leg 3a of the leg 3 and the land-side leg 3b. The trolley 6 is disposed in the quay 1 so as to be located therebetween, and the boom 5 is set to a cargo handling position horizontally connected to the girder 4, and the trolley 6 traverses the girder 4 and the boom 5, and the head block 7 moves up and down with respect to the trolley 6. By a combination of the grabbing operation of the grab bucket 10 and the releasing operation of the grab bucket 10 with respect to the scattered cargo 9, the unloading of the scattered cargo 9 from the scattered cargo ship 21 on the shore is performed.

[0005]

However, in the bridge type crane (container crane) shown in FIGS. 3 to 5, the shape of the movable hopper 13 is limited by the size of the leg 3, so that 13 cannot sufficiently increase the storage capacity of the bulk cargo (approximately three times the grab bucket gripping capacity).
The reloading cycle of the scattered cargo 9 is long.

When a bridge-type crane (container crane) is moved with respect to the hold of the bulk cargo ship 21, the position of the movable hopper 13 is changed following the bridge-type crane (container crane). Need to do.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a multipurpose crane capable of efficiently carrying out unloading of scattered cargo in addition to container handling.

[0008]

In order to achieve the above object, a multipurpose crane according to the present invention comprises a leg movable along a quay, a girder provided substantially horizontally on the top of the leg, and A boom pivotally supported at the tip of the girder and capable of tilting between a loading position horizontally connected to the girder and a rest position standing upright with respect to the girder; and a girder and the boom when the boom is set at the loading position. A trolley that traverses along the trolley, a head block that is suspended from the trolley so as to be able to ascend and descend, and on which a container handling device or a scattered cargo handling device can be mounted, and extends substantially horizontally from a vertically intermediate portion of the leg portion to the land side. A beam, a hopper for temporarily storing bulk cargo which is located inside the leg and movable along the beam, and extends from directly below the hopper to the land side of the leg and moves integrally with the hopper along the beam. Possible And a conveyor.

In the multipurpose crane according to the present invention, the bulk cargo discharged from the bulk cargo handling tool is temporarily stored in a hopper inside the leg, and the bulk cargo cut out from the hopper is stored in the hopper. Is continuously transported by a conveyor that extends from directly below to the land side.

[0010] When the bulk cargo conveyed by the conveyor is stacked and stored on the land side of the quay, the hopper and the conveyor are appropriately moved along the beam, and the bottom area of the bulk cargo stacked on the land side of the quay is stored. And increase the storage amount of the scattered cargo.

When loading and unloading the container, the hopper and the conveyor are moved to the land side along the beam, and the container locked by the spreader moves up and down near the sea side inside the leg. Secure space.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of a multipurpose crane according to the present invention, and the portions denoted by the same reference numerals as those in FIG. 3 represent the same components.

The multipurpose crane shown in FIGS. 1 and 2 is a bridge crane (container crane) shown in FIGS.
In addition to the above configuration, a pair of left and right beams 16 and the beam 1
Frame 6, a hopper 14 for temporarily storing scattered cargo, and a conveyor 1 for transporting scattered cargo.
5 is provided.

The beam 16 is attached to an intermediate portion of the leg 3 in the height direction, and the beam 16 extends from the sea-side leg 3a to the land-side leg 3b.
, And extends substantially horizontally outward of the land-side legs 3b. On the upper surface of the beam 16, a rail 17 extending over the entire length of the beam 16 is laid.

The hopper frame 18 has wheels 19 that can roll on the rails 17 at the four corners and some wheels 1
A drive device (not shown) capable of driving the hopper 9 is provided, and a hopper 14 is mounted on a portion near the sea side end of the hopper frame 18.

The upper part of the hopper 14 is a grab bucket 10.
Cargo that opens to the size appropriate to the opening of the cargo and is scattered at the bottom 9
The hopper frame 18 moves between the sea-side leg 3a and the land-side leg 3b inside the leg portion 3.

The conveyor 15 has a hopper frame such that the upstream end in the transport direction is located immediately below the cutout 20 of the hopper 14 and the downstream end in the transport direction is located outside the land-side leg 3 b of the leg 3. 18 supported.

When the container 11 (see FIG. 4) is loaded and unloaded by the multipurpose crane shown in FIGS. 1 and 2, the hopper frame 18 is moved along the beam 16 toward the land-side leg 3b, and And the conveyor 15 with the land side leg 3b
, A space for the container 11 to move up and down is secured inside the leg 3 near the seaside leg 3a.

Thereafter, a spreader 8 (see FIG. 4) is attached to the head block 7 in the same manner as the conventional bridge-type crane shown in FIG.
, The boom 5 is set to the cargo handling position horizontally connected to the girder 4, and the trolley 6 traverses the girder 4 and the boom 5, the head block 7 moves up and down with respect to the trolley 6, and the spreader 8 locks the container 11. By a combination of the operation and the unlocking operation, the container 11 is unloaded from a berthing container ship (not shown) and the container 11 is loaded from the quay 1 to the container ship.

When the cargo 9 is to be unloaded, the hopper frame 18 is moved along the beam 16 toward the seaside leg 3a, and the hopper 14 and the conveyor 15 are moved to a predetermined position inside the leg 3. To stop.

Thereafter, similarly to the conventional bridge-type crane shown in FIG. 5, a glove bucket 10 is mounted on the head block 7, and the boom 5 is set to a cargo handling position horizontally connected to the girder 4, and the girder 4 and the boom 5 Of the trolley 6 with respect to the trolley 6, the raising / lowering operation of the head block 7 with respect to the trolley 6, the gripping operation of the grab bucket 10 with respect to the palletized cargo 9, and the unclamping / releasing operation. Landing work of the scattered cargo 9 is performed.

The scattered cargo 9 put in the hopper 14 is discharged from the cutout 20 to the conveyor 15,
Is transported to the land side outside of the leg portion 3 and is piled up on the upper surface of the quay 1.

At this time, when the hopper frame 18 is reciprocated within an appropriate range at a predetermined speed, the downstream end of the conveyor 15 in the transport direction moves in the front-rear direction of the multipurpose crane,
The scattered cargo 9 discharged from the downstream end of the conveyor 15 in the transport direction is stacked in a trapezoidal shape on the upper surface of the quay 1, so that the storage amount of the scattered cargo 9 can be increased.

The piled-up cargo 9 can be loaded on the truck 12 by a separate shovel (not shown) or the like.

When the multipurpose crane moves to the hold of the bulk cargo ship 21, the hopper 14 and the conveyor 15 also move together with the leg 3, so that the movable type crane shown in FIG. The work corresponding to the position change of the hopper 13 (see FIGS. 3 and 5) is eliminated, so that the multipurpose crane shown in FIGS. 1 and 2 can efficiently carry out the unloading work of the scattered cargo in addition to the container handling.

The multi-purpose crane of the present invention is not limited to the above-described embodiment, but may be variously modified without departing from the gist of the present invention.

[0028]

As described above, according to the multipurpose crane of the present invention, the following various excellent effects can be obtained.

(1) A hopper and a conveyor that can move in the longitudinal direction of the crane are provided inside the legs, and the hopper and the conveyor are configured to move integrally with the legs. It is possible to discharge the cargo in bulk, and the work for landing the scattered cargo on land can be performed efficiently.

(2) When the hopper and the conveyor are appropriately moved along the beam when the scattered cargo transferred by the conveyor is stacked and stored on the shore side of the quay, the scattered cargo stacked on the shore side of the quay is appropriately moved. The bottom area of the cargo becomes large, and the storage amount of the scattered cargo can be increased.

(3) When the hopper and the conveyor are moved to one side inside the legs, a space is secured inside the legs for the container locked by the spreader to move up and down. The container can be loaded and unloaded in the same manner as a crane.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of an embodiment of a multipurpose crane according to the present invention.

FIG. 2 is a side view of a hopper and a conveyor in FIG.

FIG. 3 is a side view of an example of a conventional bridge crane (container crane).

FIG. 4 is a front view when a spreader is mounted on the head block in FIG. 3;

FIG. 5 is a front view when a glove bucket is mounted on the head block in FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 pier 3 legs 4 girder 5 boom 6 trolley 7 head block 8 spreader (container handling equipment) 10 grab bucket (scattered cargo handling equipment)

Claims (1)

[Claims] 1. A leg movable along the quay, a girder provided substantially horizontally on the top of the leg, a loading position pivotally supported by the tip of the girder and horizontally connected to the girder, and a girder. A boom that can be tilted between a rest position and a trolley that traverses along the girder and the boom in a state where the boom is set at the loading position; A head block to which a container handling device or a scattered cargo handling device can be attached; a beam extending substantially horizontally from a vertically intermediate portion of the leg portion to the land side;
A hopper for temporarily storing bulk cargo which is located inside the leg and is movable along the beam, and a conveyor extending from immediately below the hopper to the land side of the leg and movable integrally with the hopper along the beam A multipurpose crane comprising: