JPH0967019A - Unloading equipment for bulk cargo - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently unload a bulk cargo such as wood chip loaded in a carrier from an arbitrary hold by installing an unloading equipment on a truck traveling on a deck in a freely movable manner, and providing a drilling mechanism on a suction nozzle to suck the cargo to suck the closely compacted cargo while it is drilled. SOLUTION: In unloading a bulk cargo such as wood chips and soy bean meal, a traveling truck 5 is moved over an intended cargo hold 2. A traverse truck 6 is moved over the cargo hold 2. A winch 18 is operated, a lower expansion part 17 of a suction pipe 12 is inserted from a hatch into the cargo hold 2, and a suction nozzle 20 is loaded on the cargo loaded in the cargo hold 2. The cargo is drilled and sucked at the same time by driving blades and a rotary disk by a driving device fitted to the suction nozzle 20. Movement of the traveling truck 5 and the traverse truck 6, and expansion/contraction of the suction nozzle 12 are realized together with turning of the suction nozzle 20 to achieve the unloading work of the bulk cargo in the cargo hold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unloading device for continuously carrying out bulk cargo such as wood chips and soybean meal having an unstable angle of repose and being relatively difficult to cut from a ship.

[0002]

2. Description of the Related Art Bulk cargo such as wood chips has no fluidity because it agglomerates and adheres to each other due to shaking during transportation, and it is necessary to excavate and cut while unloading.

Conventionally, a grab bucket or a suction type transportation pipe has been used for the unloading work of bulk cargo.

[0004] When unloading with a grab bucket, it is necessary to put a bulldozer in the ship's hold and to carry out the operations of scraping, acclimatizing, and dredging the cargo in parallel with the unloading, in order to break down the cargo closely attached to it. Further, since the work is intermittent, the unloading efficiency is low, and further, a part of the carried-out cargo becomes dust and scatters, which causes a loss of the cargo and is a cause of polluting the surrounding environment.

On the other hand, even when unloading by a suction type transport pipe, the cargoes are in close contact with each other and are unlikely to be cut into pieces. Therefore, as in the case of using the grab bucket, suction is difficult unless the excavation work is performed in parallel. Is.

Further, in any of the work methods, the work time becomes long and a large number of skilled workers are required. Therefore, it is a problem to cope with the recent labor shortage and aging of port workers. There is.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to unload bulk cargo such as wood chips and soybean meal loaded on a carrier more efficiently than an arbitrary ship. It is to propose a possible unloading device.

[0008]

In the unloading device according to the present invention, the device is installed on a dolly traveling on a deck so as to be freely movable, and a suction nozzle for sucking cargo is provided with an excavating mechanism, It is configured to suck the cargo that is in close contact while excavating. As a result, automatic and continuous unloading work is possible, and it is possible to improve unloading efficiency, work with a small number of people, and improve the surrounding environment.

Further, the unloading device according to the present invention enables the suction of the cargo corresponding to the shape of the boat by rotating the suction nozzle, and the nozzle tip position is controlled to move to the bottom of the boat to expose the bottom. It is possible to significantly reduce the burden of.

The unloading device according to the present invention comprises a traveling carriage that moves in the bow-stern direction on the upper deck while straddling the hatch of the boat, a traverse carriage that moves in the ship-side direction on the traveling carriage, and a telescopic carrier mounted on the traverse carriage. Suction pipe including a suction pipe and a suction nozzle attached to the tip of the suction pipe, a swirling device that swivels the suction nozzle in a substantially horizontal plane, a collecting and separating device and a separating device that separates the bulk cargo sucked and collected from the suction pipe from air. It is equipped with a conveyor installed on a traveling carriage for carrying bulk cargo discharged from the device to the ship side.

Further, in a preferred embodiment of the unloading device according to the present invention, the nozzle of the suction means has a divergent opening, a cover attached to the opening, and a cover side portion projectingly provided so as to be rotatable. A supported rotating shaft, at least two spiral blades on one side of the rotating shaft, which are attached symmetrically to each other, and blades having a large number of teeth on the outer peripheral part, and a large number of outer peripheral parts attached to both ends of the rotating shaft. And a at least one drive for driving the rotary shaft.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings.

FIGS. 1 and 2 show a state in which an unloading device is installed on a carrier ship as an embodiment of the present invention. FIG. 3 shows an appearance of a suction nozzle for sucking a bulk cargo in the unloading apparatus according to the present invention. FIG.
Shows a sectional view of the suction nozzle. FIG. 5 shows the blades of the suction nozzle, and FIG. 6 shows the rotating disk on the outer peripheral portion of the suction nozzle.

As shown in FIGS. 1 and 2, the carrier 1 is provided with a plurality of barges 2. Two unloading devices 4 according to the present invention are installed on the upper deck 3. Each unloading device is provided with a traveling carriage 5, a traverse carriage 6 attached to the travel carriage 5, a conveyor 7, a bag filter 8, an air transport pipe 9 and a suction blower 10, and collecting on the traverse carriage 6 A separation device 11 and a suction pipe 12 are installed.

The traveling carriage 5 straddles the hatch 13 of the boat 2,
The rail 14 installed on the upper deck 3 can be moved in the bow-stern direction by driving means (not shown). Further, the transverse carriage installed on the traveling carriage 5 moves on the traveling carriage 5 in the boat side direction by a driving means (not shown).

The suction tube 12 is composed of an upper fixed portion 16 fixed to the guide frame 15 and a lower elastic portion 17 slidably fitted into the upper fixed portion 16 from below. Is expanded and contracted by the winch 18 attached to the guide frame 15. A suction nozzle 20 and a swivel device 19 are provided at the tip of the lower stretchable portion 17, and the suction nozzle 20 can swivel in a substantially horizontal plane by the swivel device 19.

The other end of the upper fixed portion 16 of the suction pipe 12 is connected to the separation / collection device 11 installed on the traverse carriage 6.

A rotary valve 21 is installed in the lower part of the separating / collecting device 11, and one end of an air transport pipe 9 is connected to the upper part thereof. The other end of the air transportation pipe 9 is fixed to one end of the expansion / contraction portion 22 of the horizontal expansion / contraction pipe fixed to the transverse carriage 6. The other end of the horizontal expansion / contraction tube expansion / contraction part 22 is slidably fitted in a horizontal expansion / contraction tube fixing part 23 fixed to the traveling carriage 5, and expands / contracts as the traverse carriage 6 moves. A branch pipe 24 is connected to the other end of the horizontal expansion pipe fixing portion 23, and a bag filter 8 is attached to the tip of the branch pipe 24.

The bag filter 8 is switched by operating a valve (not shown), and either one of them is selectively used. Exhaust pipe 25 on the outlet side of the bag filter 8
And the suction blower 10 is connected to the other end of the exhaust pipe 25.

Further, the boat 1 is provided with a belt conveyor 26 on the upper deck 3 on one side, and belt conveyors 27 and 28 for discharging the vessel outboard are provided on the front and rear sides of the conveyor 26.
In order to discharge the cargo sent from the conveyor 7 to the belt conveyor 26, the traveling carriage 5 is provided with a hopper 29 located above the conveyor 26, and the conveyor 7 is longer than the traveling distance of the traverse carriage 6. It has a height and reaches above the hopper 29.

As shown in FIGS. 3 and 4, the suction nozzle 20
Is provided with a suction opening 30 having an end widening shape, and a digging portion cover 31 provided at a lower portion thereof, and a rotary shaft 33 having blades 32 mounted in the digging portion cover 31 and a cover side wall 34 protruding. And is rotatably supported. At both ends of the rotary shaft 33, a rotary disk 35 and a rotational force transmission device 36 near one of the rotary disks 35 are attached, and are connected to a drive device 37 provided on the excavation part cover 31.

The rotational force transmission device 36 can be provided at both ends of the rotary shaft 33, and the drive device 37 can be provided for each of them.

Further, as shown in FIG. 4, the blades 32 have a spiral shape, and at least two blades 32 are arranged symmetrically on each side.

As shown in FIG. 5 and FIG. 6, the blade 32 and the outer peripheral portion of the rotary disk 35 have a sawtooth shape. This makes it easier for the blades to bite into the cargo, reducing excavation resistance, resulting in less power loss,
And it becomes possible to improve work efficiency.

Further, the outer peripheral portions of the blades 32 and the rotary disk 35 can be formed into other shapes that allow excavation of cargo, for example, comb teeth.

The unloading of bulk cargo such as wood chips and soybean meal is carried out by the following procedure. First, the traveling carriage 5 is moved above the target ship carrier 2. Next, the traverse carriage 6 is moved to a predetermined place on the boat 2. After that, the winch 18 is operated, the lower expansion / contraction part 17 of the suction pipe 12 is inserted into the boat 2 from the hatch 13, and the suction nozzle 20 is placed on the cargo loaded on the boat 2. The blades 32 and the rotary disk 35 are rotated by the drive device 37 attached to the suction nozzle 20 to excavate the cargo and perform suction.

The bulk cargo in the ship hold 2 is subject to vibration during transportation,
They are in close contact with each other due to shaking and the like, and it is difficult to suck them as they are. Is released. The cargo flowing into the suction opening 30 easily flows into the telescopic suction pipe 17 by the suction flow generated from the suction blower 10.

The bulk cargo passing through the suction pipe 12 is separated from the air in the separating / collecting device 11, and is deposited on the lower part of the separating / collecting device 11. The accumulated cargo is discharged by the rotary valve 21 in a fixed amount to the conveyor 7 installed on the traveling carriage 5. Further, the cargo discharged to the conveyor 7 is the hopper 2
9. It is discharged to the outside of the ship via the conveyor 26 and the conveyors 27 and 28.

On the other hand, the air containing the dust of the bulk cargo passes through the separating and collecting device 11 and then the air transport pipe 9 and the horizontal expansion / contraction pipe 2
Dust is removed by flowing into the bag filter 8 through 2, 23 and the branch pipe 24, and is discharged to the atmosphere through the suction blower 10.

Since the height of the cargo in the boat 2 gradually decreases as the unloading progresses, the suction pipe lower expansion / contraction part 17
Are sequentially extended downward so that the suction nozzle 20 is always located above the cargo, and the swirl device 19 causes the suction nozzle 20 to
Is turned to excavate and suck cargo.

By carrying out the above procedure together with the movement of the traveling carriage and the traverse carriage, the expansion and contraction of the suction pipe, and the rotation of the suction nozzle, the unloading work of the bulk cargo in the boat is carried out. In the device according to the present invention, all the work can be automated.

[0032]

INDUSTRIAL APPLICABILITY As described above, the unloading apparatus according to the present invention can automate the work, and the efficiency of the unloading work can be improved by using the nozzle capable of efficiently excavating and sucking the close cargo. It also enables the work by a small number of people who do not necessarily need a skilled worker. Furthermore, since it is possible to suppress the generation of dust during work, it is possible to reduce environmental pollution in the surroundings.

[Brief description of drawings]

FIG. 1 is a cross-sectional view and a view from above showing a state in which an unloading device according to the present invention is installed on a ship.

FIG. 2 is a side sectional view of an unloading device according to the present invention installed on a ship.

FIG. 3 is a side view of the suction nozzle of the unloading device according to the present invention.

FIG. 4 is a sectional view of a suction nozzle tip portion of the unloading device according to the present invention.

FIG. 5 is a view showing the shape of the outer peripheral portion of the blade at the tip of the suction nozzle.

FIG. 6 is a view showing a shape of an outer peripheral portion of a rotary disc at a tip portion of a suction nozzle.

[Explanation of symbols]

 1 Carrier 2 Shipboard 3 Upper deck 4 Unloading device 5 Traveling dolly 6 Traverse dolly 7 Conveyor 8 Bag filter 9 Air transport pipe 10 Suction blower 11 Collection / separation device 12 Suction pipe 13 Hatch 14 Rail 15 Guide frame 16 Suction pipe upper fixed part 17 Lower expansion part of suction pipe 18 Winch 19 Swivel device 20 Suction nozzle 21 Rotary valve 22 Expansion part of horizontal expansion pipe 23 Fixed part of horizontal expansion pipe 24 Branch pipe 25 Exhaust pipe 26, 27, 28 Belt conveyor 29 Hopper 30 Suction opening 31 Drilling Part cover 32 blade 33 cover side wall 34 rotating shaft 35 rotating disk 36 rotational force transmission device 37 drive device

Claims (2)

[Claims] 1. A unloading device for unloading bulk cargo loaded in a shipboard to the outside of a ship, a travel carriage that crosses the hatch of the ship and moves in the bow-stern direction on the upper deck, and in a lateral direction on the travel carriage. Traverse carriage that moves to, a screw-type suction means that includes a suction tube that is mounted on the traverse carriage and that can expand and contract in the vertical direction, and a suction nozzle that is attached to the tip of the suction tube, and swivel the suction nozzle in a substantially horizontal plane. Unloading equipped with a swivel device, a collection and separation device that separates the cargo that has been suctioned and collected from the suction pipe from the air, and a conveyor that is installed on the traveling carriage that carries the cargo discharged from the collection and separation device toward the ship apparatus. 2. The unloading apparatus according to claim 1, wherein the suction means includes a divergent opening, an excavation section cover attached to the opening, and an excavation section cover side portion in the excavation section cover. A rotating shaft protrudingly supported so as to be rotatable, at least two blades on one side, and blades having a large number of teeth on the outer periphery, which are attached to the rotating shaft in a spiral shape, and attached to both ends of the rotating shaft. A unloading device comprising a rotating disk having a large number of teeth on its outer peripheral portion, and at least one drive device for driving a rotating shaft.