JPH11322083A - Bulk cargo unloading device for self-unloader vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To previously prevent the pollution of the environmental sanitation while effectively catching the dust at the time of discharging the bulk cargo by providing a dust collecting mechanism in an upper part of a receiver chute so as to catch the dust to be generated at the time of discharging the bulk cargo from a shuttle conveyor to a receiver chute. SOLUTION: A machine body 1 of a bulk cargo unloading device A is positioned at a tip of a shuttle conveyor 12 provided in a self-unloader vessel 11 coming alongside of a quay B, and a front conveyor 3a is positioned under the tip of the conveyor 12. The bulk cargo as a load discharged from the shuttle conveyor 12 is received by a chute 6 fitted to a tip of the front conveyor 3a, and the bulk cargo is transferred to a hinterland conveyor 10 by the front conveyor 3a and a rear conveyor 3b. At this stage, a dust collecting mechanism 8 formed of a dust collecting hood 7 and a dust collector 8 is provided so as to catch the dust to be generated at the time of discharging the bulk cargo from the shuttle conveyor 12 to the chute 6, and the environmental sanitation is thereby maintained well.

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 unloading bulk materials such as coal, limestone and iron ore loaded on a self-unloader ship.

[0002]

2. Description of the Related Art Conventionally, in order to discharge bulk materials such as coal, limestone, and iron ore loaded on a cargo ship, as shown in FIG. Bucket 21 of unloader crane 20 provided in
, And is thrown into the receiving hopper 22, fed to the hinter conveyor 24 by the in-machine conveyor 23, and discharged to the yard by the hinter conveyor 24.

[0003] Such a conventional batch type unloading apparatus is extremely inefficient, and recently, a self-unloader ship having an unloading facility installed on a hull has been used.

FIG. 8 is a side view showing an example of a conventional self-unloader ship, and FIG. 9 is a plan view thereof. As shown in the drawing, a telescopic chute 29 is provided at the tip of a revolving boom frame 28 provided on the self-unloader ship 11, and passes through a horizontal belt conveyor 30, a payout machine 31, and a vertical belt conveyor 32 installed in the ship. The bulk of the cargo conveyed by the swiveling / uplifting boom belt conveyor 33 is supplied to a hopper installed on the quay through the telescopic chute 29 (hereinafter referred to as prior art 1).

FIG. 10 is a schematic side view showing another example of a conventional self-unloader ship. As shown in the drawing, the bulk material in the hold is continuously carried out by a shuttle conveyor 34 provided on the self-unloader ship, and is supplied to a hopper 35 installed on the quay. Through the hinter conveyor 37,
It is unloaded to the yard by the hinter conveyor 37 (hereinafter referred to as prior art 2).

FIG. 11 is a side view showing a conventional unloading device for a self-unloader ship disclosed in Japanese Patent Application Laid-Open No. 6-227677. As shown in the drawing, according to this apparatus, the bulk of the cargo carried out on the ship by the belt conveyor 38 in the ship is supplied to the hopper 35 installed on the quay by the swiveling and raising boom belt conveyor 39. The tip of the boom frame 42 is supported by the hopper 35 on the quay side by the turning device 40 and the wire rope hoisting type elevating device 41 (hereinafter, referred to as the hopper 35).
Prior art 3).

[0007]

SUMMARY OF THE INVENTION
In the apparatus of 3, the hoppers for receiving the bulk of the goods unloaded from the on-board belt conveyor are all fixedly installed on the quay where the self-unloader ship berths and are unloaded from the on-board shuttle conveyor. Because
It is not possible to automatically cope with a vertical movement of a ship due to tide level and waves, a variation in draft due to a load during cargo handling, and the like.

In addition, since the height of the hopper installed on the quay is constant, the distance between the shuttle conveyor on the ship and the hopper on the quay increases due to the movement of the ship due to draft, tide level, and wave motion. In such a case, even a small amount of wind can cause loosening of the unloading material, such as ore powder, to scatter, causing a problem of deteriorating the environment around the quay.

In order to prevent such a problem, if an enclosure is provided at the upper part of the hopper so as to enclose the charging section of the shuttle conveyor, the enclosure must be about 5 m in height, and the equipment must be installed. In addition to the increase in size, the loading surface of the shuttle conveyor is open, so that the effect of preventing cargo from scattering cannot be sufficiently obtained.

In the case of the prior art 1 shown in FIGS. 8 and 9, it is necessary to prevent interference between the telescopic chute 29 and the receiving hopper on the quay side. It is necessary to change the elevation angle of the elevation boom belt conveyor 33.

In the case of the prior art 2 shown in FIG. 10, since the hopper 35 is connected to the hinter conveyor 37 through the two communication conveyors 36, the two conveyors occupy the quay. As a result, there is a problem that the effective use of the entire quay is hindered.

In the case of Prior Art 3 shown in FIG.
When the boom conveyor of the self-unloader ship is placed on the ground hopper, it can follow the movement of the ship.However, a mechanism is needed to provide the equipment on the ship side with functions such as raising, turning, and adjusting the weight of the boom belt conveyor 39. To become
There is a problem that the structure becomes complicated and the equipment cost rises.

[0013] Accordingly, the present invention solves the above-mentioned problems, and solves the problem of coal, limestone, and coal loaded on a self-unloader ship.
When discharging bulk materials such as iron ore to the hopper on the quay side,
The cargo does not scatter and therefore does not degrade the environmental hygiene, and it can cope with the vertical movement of the ship due to the tide level and waves, the fluctuation of the draft due to the cargo volume during cargo handling, etc. Another object of the present invention is to provide a bulk unloading device for a self-unloader ship that can automatically unload at low cost.

[0014]

SUMMARY OF THE INVENTION A bulk unloading device according to the present invention is provided on an airframe that can travel on a quay for transferring bulk materials unloaded from a shuttle conveyor of a self-unloader ship to a land side. A belt conveyor comprising a front conveyor capable of moving up and down and a rear conveyor attached to the front conveyor, and a front conveyor provided on the body for raising and lowering the front conveyor of the belt conveyor. A mechanism, a receiving chute attached to a front end of the front conveyor for supplying the bulk conveyed from the shuttle conveyor to the front conveyor, and a bulk for the receiving chute from the shuttle conveyor. A dust collecting mechanism provided at an upper portion of a receiving chute for collecting dust generated when discharging air, and a lower portion of a tip portion of the shuttle conveyor. And a tip of the shuttle conveyor and a tip of the shuttle conveyor for continuously measuring the interval between the two so that a constant interval is maintained between the tip of the shuttle and the top of the shuttle conveyor. And a distance measuring mechanism attached to the lower surface.

According to the apparatus of the present invention, the bulk of the cargo discharged by the shuttle conveyor installed on the self-unloader ship is received by the chute attached to the tip of the front conveyor, and the front conveyor and the rear conveyor are received. By the conveyor, it is transferred to a hinter conveyor provided below the end of the rear conveyor. As a result, dust generated when the bulk material is discharged from the shuttle conveyor to the chute is collected by the dust collection mechanism provided on the chute of the front conveyor, and does not hinder environmental hygiene.

Further, the distance between the front conveyor and the shuttle conveyor is continuously measured by distance measuring mechanisms provided on the upper surface of the front end of the front conveyor and the lower surface of the front end of the shuttle conveyor. The height of the front conveyor is automatically controlled based on the difference from the set value so that the distance between the two is kept constant. Therefore, the height of the chute can automatically follow the vertical movement of the ship due to the tide level, waves, and the like, and the fluctuation of the draft of the ship due to the load.

[0017]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a front view of a bulk discharging apparatus A of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof.
As shown in the drawing, a body 1 that can travel on a quay B by a traveling mechanism 2 having wheels 2a has a belt conveyor 3 including a front conveyor 3a and a rear conveyor 3b that are axially mounted by a horizontal shaft 4. Is provided.

A hoisting device 5 is provided at the tip of the body 1 as a mechanism for raising and lowering the front conveyor 3a. The tip of a hoisting rope 5a attached to the hoisting device 5 is attached to the front conveyor 3a. It is mounted on a gantry 14, which will be described later, fixed to the tip. Therefore, the hoisting device 5
, The front conveyor 3a rises and falls with the horizontal shaft 4 as a fulcrum via the hoisting rope 5a. 9
Is a weight for applying a constant tension to the belt conveyor 3.

FIG. 4 is an enlarged front view of the front end of the front conveyor 3a, and FIG.
At the end of the frame a, a receiving chute 6 for supplying the bulk of the cargo unloaded from the shuttle conveyor 12 provided on the self-unloader ship 11 to the front conveyor 3a provided on the unloading device A is provided. Fixed.

A dust collecting mechanism is provided at the upper end of the receiving chute 6 as an integral part of a dust collecting hood as a dust collecting mechanism for preventing scattering of dust generated when the bulk material is discharged from the shuttle conveyor 12 to the receiving chute 6. 7 is attached, and the front conveyor 3a is located near the dust collecting hood 7.
The dust collector 8 is mounted on the gantry 14 fixed to the front end frame.
Is provided.

The dust collecting hood 7 is a hood body for covering the receiving chute 6, the front end of the front conveyor 3a and the front end of the shuttle conveyor 12 from both side surfaces and the upper surface thereof. Shuttle conveyor 1
2 and its pulley 13 are inserted, and the exhaust containing dust discharged from the other end side opening 7b is collected by a dust collector 8
Is to be collected.

As shown in FIG. 6 which is an enlarged front view of the front end of the front conveyor 3a, a distance measuring mechanism for automatically measuring the distance between the front conveyor 3a and the shuttle conveyor 12 is provided. An ultrasonic range finder 15 is mounted on a gantry 16 fixed to the front end frame, and a shuttle conveyor 1 provided on a self-unloader ship 11 is provided.
For example, a SUS reflector 17 is fixed to the lower surface of the second end frame.

The ultrasonic conveyer 15 provided on the upper surface of the front end frame of the front conveyor 3a and the reflection plate 17 provided on the lower surface of the front end frame of the shuttle conveyor 12 as described above allow the front conveyor 3a to be connected to the front conveyor 3a. The distance between the shuttle conveyor 12 is continuously measured, whereby
The hoisting device 5 automatically raises and lowers the front conveyor 3a so that the chute 6 provided at the front end of the front conveyor 3a has a constant height.

The bulk unloading device of the present invention is configured as described above, and the fuselage 1 of the bulk unloading device A is located at the tip of the shuttle conveyor 12 provided on the self-unloader ship 11 berthing to the quay B. To be moved by the traveling mechanism 2 and the front conveyor 3a of the unloading device A
Is located below the tip of the shuttle conveyor 12.

The bulk material discharged by the shuttle conveyor 12 is received by the chute 6 attached to the front end of the front conveyor 3a, and is moved by the front conveyor 3a and the rear conveyor 3b moved by the conveyor driving mechanism 3c. Then, the bulk material is transferred to the hinter conveyor 10 provided below the end of the rear conveyor 3b. At this time, dust generated when the bulk material is discharged from the shuttle conveyor 12 to the chute 6 is collected by the dust collecting mechanism including the dust collecting hood 7 and the dust collector 8, and thus does not hinder environmental hygiene.

Further, a distance measuring mechanism comprising an ultrasonic range finder 15 provided on the upper surface of the front end frame of the front conveyor 3a and a reflecting plate 17 provided on the lower surface of the front end frame of the shuttle conveyor 12 allows the front portion to be moved. The distance between the conveyor 3a and the shuttle conveyor 12 is continuously measured,
The front conveyor 3a is automatically moved up and down and its height is controlled by the difference between the measured value and the set value so that the distance keeps a constant value. Therefore, the height of the chute 6 for receiving loose objects can be automatically made to follow the vertical movement of the ship due to the tide level, waves, and the like, and the fluctuation of the draft according to the load.

[0027]

As described above, according to the present invention,
Fluctuation of bulk materials such as coal, limestone and iron ore loaded on the self-unloader ship without deteriorating environmental hygiene due to scattering, fluctuation of the draft due to the vertical movement of the ship due to tide level and waves, and the load during loading and unloading In addition, it is possible to automatically land at low cost without occupying the quay, and an industrially useful effect is brought about.

[Brief description of the drawings]

FIG. 1 is a front view of the device of the present invention.

FIG. 2 is a plan view of FIG.

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

FIG. 4 is an enlarged front view of a front end portion of a front conveyor showing a dust collecting mechanism.

FIG. 5 is a side view of FIG. 4;

FIG. 6 is an enlarged front view of a front end portion of a front conveyor showing a distance measuring mechanism.

FIG. 7 is a front view showing a conventional batch type unloading device.

FIG. 8 is a side view of Prior Art 1.

FIG. 9 is a plan view of FIG.

FIG. 10 is a schematic side view of prior art 2.

FIG. 11 is a schematic side view of prior art 3.

[Explanation of symbols]

 Reference Signs List A bulk lifting device B quay 1 body 2 traveling mechanism 3 belt conveyor 3a front conveyor 3b rear conveyor 3c conveyor drive mechanism 4 horizontal axis 5 hoisting device 6 receiving chute 7 hood 8 dust collector 9 weight 10 rear back conveyor 11 self unloader Ship 12 Shuttle conveyor 13 Pulley 14 Mount 15 Ultrasonic rangefinder 16 Support 17 Reflector

Claims (1)

[Claims] An up-and-down movable front conveyor provided on an airframe capable of traveling on a quay for transferring bulk materials carried out from a shuttle conveyor of a self-unloader ship to a land side. A belt conveyor comprising a shaft-attached rear conveyor, a front conveyor raising / lowering mechanism provided on the machine body for raising / lowering a front conveyor of the belt conveyor, and bulk materials carried out from the shuttle conveyor. A receiving chute attached to the front end of the front conveyor for supplying to the front conveyor, and a dust collecting unit for collecting dust generated when discharging bulk materials from the shuttle conveyor to the receiving chute. A dust collecting mechanism provided above the receiving chute, between a lower surface of a distal end of the shuttle conveyor, and an upper surface of a distal end of the front conveyor. To keep a certain interval,
A rose for a self-unloader ship, comprising: a distance measuring mechanism attached to the top surface of the front end of the front conveyor and the bottom surface of the front end of the shuttle conveyor for continuously measuring the distance between the two. Unloading device.