JP3675893B2 - Chute shielding device for continuous unloader - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a chute shield device for a continuous unloader, and more particularly to a chute shield device for a continuous unloader for continuously landing loose materials such as iron ore and coal from inside a hold.
[0002]
[Prior art]
The continuous unloader has a single bucket elevator at the tip that simultaneously excavates, scrapes, and vertically conveys the bulk material (load) in the hold, and the load scraped in the bucket is transported to the top of the elevator. It is carried out to the table feeder through the chute. Next, the belt conveyor on the boom, the in-machine conveyor, etc. are transferred to the ground side equipment.
[0003]
If such work is continued, especially when iron ore work is performed, special powder ore adheres to the bucket elevator, bucket and inner surface of the swivel mast (casing). If fine ore adheres to buckets or chains, the tip of the boom will become heavy, resulting in overload and reduced cargo handling efficiency.
[0004]
For this reason, conventionally, when powder ore adheres to a bucket, chain, etc., the cargo handling operation is temporarily stopped, and the lower end portion of the bucket elevator is placed in water to wash away the powder ore. To wash this water, first raise the boom, take out the scraper from the hold, turn it, put the scraper into the water tank installed on the ground, and wash it while rotating the bucket elevator slowly at low speed. ing.
[0005]
That is, the water (washing water) in the water tank is pumped up by the bucket of the bucket elevator, pumped up to the upper sprocket in the same manner as the cargo handling operation, and the bucket is tilted and discharged on the upper sprocket. Part of the discharged wash water flows again through the swivel mast into the water tank. Some of the water is discharged to the table feeder through the chute, but when discharged to the table feeder, the conveyor on the boom and the conveyor inside the machine are connected to the drainage channel on the ground, etc., as in the case of load transport. Finally, it is purified and disposed of with a specially installed water treatment facility so as not to cause environmental pollution.
[0006]
[Problems to be solved by the invention]
By the way, powder ore adheres most inside bucket buckets and chains and swivel masts of bucket elevators, and the adhesion around this becomes a major factor of overloading, so washing around the bucket elevator is performed. If this is the case, it is not necessary to transfer the washing water to the drainage groove on the ground via a boom conveyor or an in-machine conveyor.
[0007]
However, when the bucket elevator is washed with washing water, a part of the water pumped up by the bucket is transferred to the drainage ditch on the ground, connecting to the conveyor on the boom and the conveyor inside the machine, as in the case of load transportation. A special water treatment facility must be installed. In addition, it is difficult to dispose of used cleaning water on quay walls without drains. Furthermore, there existed problems, such as the circumference | surroundings becoming dirty with the dirty water produced when wash | cleaning.
[0008]
The present invention has been devised in view of such problems, and when washing a bucket elevator, washing water is repeatedly used while being pumped up by the bucket elevator, and is mainly washed around the bucket, chain, and inside of the swivel mast around the bucket elevator. It is an object of the present invention to provide a continuous unloader chute shielding device in which cleaning water is prevented from flowing to a conveyor on a boom, an in-machine conveyor or the like.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a chute shielding device for a continuous unloader according to the present invention includes a swing mast that is suspended from a top support frame at the tip of a boom and is pivotable about an axis, and is provided at an upper end and a lower portion of the swing mast. An endless bucket elevator provided to span the sprocket along the longitudinal direction of the swivel mast, a table feeder that is located below the upper sprocket and receives the bulk material discharged from the bucket of the bucket elevator, and a bucket In a continuous unloader having a chute for guiding discharged bulk material to a table feeder, a chute shielding plate for opening and closing the chute opening is pivotally attached to the upper part of the chute disposed above the swivel mast so as to be openable and closable. A waterproofing member made of an elastic body is provided on the peripheral edge of the chute shielding plate .
[0010]
[Action]
When cleaning the bucket elevator by pivotably mounting a chute shield plate that opens and closes the chute opening above the chute arranged on the upper part of the swivel mast, close the chute opening and all the water By washing down the swivel mast of the bucket elevator and returning it to the water tank, the washing water is repeatedly used only in the bucket elevator and its surroundings, so that it does not flow on the conveyor on the boom or on the in-machine conveyor. There is no need to specially install a water treatment facility for treating water, and the surrounding area is not contaminated by sewage generated when washing.
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a side view of a chute shielding device for a continuous unloader according to the present invention, FIG. 2 is an enlarged view of a main part of FIG. 1, FIG. 3 is a view taken along arrow AA in FIG. FIG. 5 is a diagram showing another embodiment of the portion corresponding to FIG. 4, FIG. 6 is a schematic diagram showing a cleaning state of the bucket elevator, and FIG. 7 is a schematic diagram of the entire continuous unloader.
[0012]
As shown in FIG. 7, the continuous unloader is provided so as to be able to travel on a quay for loading and unloading. The continuous unloader is installed so as to be able to travel on a rail 2 laid on the ground 1, and is mainly capable of traveling on the rail 2, and can be swung and raised on the traveling frame 3. , A swing mast 11 that is pivotably supported by a support frame 5 provided at the tip of the boom 4 and that hangs down vertically, and an upper end of the swing mast 11. An upper sprocket 6, a lower sprocket 7 and a tip sprocket 8 provided at the lower part, and an endless bucket elevator 15 provided so as to span the sprockets 6, 7 and 8 along the longitudinal direction of the swivel mast 11. It is composed of The bucket elevator 15 includes a chain 9 and a plurality of buckets 10 provided on the chain 9. In addition, 27 is a conveyor provided on the boom 4, 28 is an in-machine conveyor provided on the traveling frame 3, 29 is a ground conveyor provided on the ground 1, and 30 is a hold.
[0013]
As shown in FIG. 1, reference numeral 26 denotes a table feeder provided at a lower portion of the upper sprocket 6. A chute 12 is provided above the table feeder 26 and located at a lower portion of the upper sprocket 6. Yes. A chute shield plate 13 is pivotally attached to an upper portion of the opening 12 a of the chute 12 by a shaft 21 so as to be opened and closed by brackets 20 and 20 a attached to the turning mast 11. Further, as shown in FIGS. 3 and 4, a plate-shaped waterproof member 31 made of an elastic body is fixed and attached to the lower surface of the four peripheral end portions of the chute shielding plate 13 by a plurality of pins 32. Instead of the plate-like waterproof member 31, as shown in FIG. 5, a cylindrical waterproof member 33 made of an elastic body may be attached. Reference numeral 34 denotes a concave mounting member for mounting the cylindrical waterproof member 33, and is fixed to the lower surface of the four peripheral end portions of the chute shielding plate 13. Reference numeral 35 denotes a reinforcing bracket for the concave mounting member 34.
[0014]
Although FIG. 2 shows the open / close state of the chute shield plate 13, the chute shield plate 13 is opened and closed by expansion and contraction of the piston rod 14 a of the hydraulic cylinder 14. Then, the opening 12a at the upper part of the chute 12 is closed by the contraction operation of the piston rod 14a (shown by a solid line), and the opening 12a of the chute 12 is opened by the extension operation of the piston rod 14a (shown by a one-dot chain line). At the time of opening and closing, the plate-like waterproof member 31 attached to the chute shielding plate 13 passes through the opening 12a of the chute 12 in the up-down direction in a bent state (indicated by a one-dot chain line in FIG. 4). Further, the cylindrical waterproof member 33 passes through the opening 12a of the chute 12 in the vertical direction in a crushed state (indicated by a one-dot chain line in FIG. 5). The hydraulic cylinder 14 is pivotally supported by a pin 18 on a protruding member 19 at a base end portion and a bracket 17 attached to the turning mast 11. The piston rod 14a is connected to the arm 16 fixed to the chute shield plate 13 by a pin 18a. Reference numeral 22 denotes a slit for penetrating the arm 16 provided in the swivel mast 11. A pneumatic cylinder may be used instead of the hydraulic cylinder 14.
[0015]
As shown in FIG. 6, the bucket elevator 23 is cleaned by placing the lower part of the bucket elevator 15 in the cleaning water 25 of the water tank 24. The water tank 24 is portable, and when it is used, it is transferred from another place to a predetermined location on the ground 1 and previously filled with washing water 25.
[0016]
Next, the operation of the above embodiment will be described.
When the cargo in the hold 30 is carried out by the continuous unloader, the chute shielding plate 13 is made vertical, the opening 12a of the chute 12 is opened, the load is dropped onto the table feeder 26 via the chute 12, and the boom 4 The conveyor 27, the in-machine conveyor 28, the ground conveyor 29, etc. are transferred to the equipment on the ground 1 side. If fine ore adheres to the bucket 10 or the chain 9 during the loading operation, the loading operation is temporarily stopped. First, the boom 4 is raised, the scraping portion 23 of the bucket elevator 15 is taken out from the hold 30 and swung, and is put into a water tank 24 previously set on the ground. Next, the chute shielding plate 13 is set obliquely downward, the opening 12a of the chute 12 is closed, the bucket elevator 15 is rotated slowly at a low speed, and the washing water 25 is pumped up to the upper sprocket 6 by the bucket 10 and washed away. . At this time, since the chute 12 is closed by the chute shielding plate 13, the washing water 25 does not flow to the conveyor 27, the in-machine conveyor 28, and the ground conveyor 29 on the boom 4, but flows down in the swivel mast 11. Return all to the tank 24.
[0017]
Therefore, since the washing water 25 in the water tank 24 is repeatedly used, it is not necessary to install a water treatment facility for treating the water that has flowed to the outside, and the surrounding area is contaminated by the sewage generated during washing. There is no such thing.
[0018]
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the technical idea described in the claims.
[0019]
【The invention's effect】
As described above, the chute shielding device for the continuous unloader according to the present invention is pivotally mounted so that the chute shielding plate for opening and closing the chute opening portion can be opened and closed above the chute disposed above the swivel mast of the continuous unloader. During the cargo handling operation, the chute shield plate opens the chute opening to transport the load to the ground side. There is no need to install special water treatment equipment for treating the washing water, and there are excellent effects such as that the surroundings are not contaminated by the dirty water generated when washing.
[Brief description of the drawings]
FIG. 1 is a side view of a chute shielding device for a continuous unloader according to the present invention.
FIG. 2 is an enlarged view of a main part of FIG.
FIG. 3 is a view taken along arrow AA in FIG. 2;
4 is a view taken along arrow BB in FIG. 3;
5 shows another embodiment of the portion corresponding to the view taken along the line BB in FIG.
FIG. 6 is a schematic view showing a cleaning state of the bucket elevator.
FIG. 7 is a schematic view of the entire continuous unloader.
[Explanation of symbols]
1 ground 2 rail 3 traveling frame 4 boom 5 support frame 6 upper sprocket 7 lower sprocket 8 tip sprocket 9 chain 10 bucket 11 turning mast 12 chute 12a chute opening 13 chute shielding plate 14 cylinder 14a piston rod 15 bucket elevator 16 arm 17 bracket 18 Pin 18a Pin 19 Projection member 20, 20a Bracket 21 Shaft 22 Slit 23 Scraping portion 24 Water tank 25 Washing water 26 Table feeder 27 Conveyor 28 on the boom 28 On-vehicle conveyor 29 Ground conveyor 30 Ship hold 31 Plate-like waterproof member 32 Plate-like waterproof member Fixing pin 33 Tubular waterproof member 34 Recessed tubular waterproof member mounting member 35 Bracket

Claims (1)

A swivel mast suspended from the top support frame at the end of the boom and provided so as to be able to turn around an axis, and an endless provided so as to span the sprockets provided at the upper and lower parts of the swivel mast along the longitudinal direction of the swivel mast. -Type bucket elevator, a table feeder that is located below the upper sprocket and receives the bulk material discharged from the bucket of the bucket elevator, and a continuous unloader that guides the bulk material discharged from the bucket to the table feeder The chute shielding plate for opening and closing the opening of the chute is pivotally attached to the upper portion of the chute disposed above the swivel mast so that the chute shielding plate can be opened and closed . A chute shielding device for a continuous unloader.

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