KR101543544B1 - Method for loading and unloading using a continuous ship unloader - Google Patents

Abstract

The present invention relates to a method for loading and unloading soft coal using a continuous unloader of a screw method which can efficiently unload soft coal loaded in a carrier using a continuous unloader of a screw method, and can improve work efficiency by preventing an inlet feeder, which is installed on the vertical conveyor of the unloader or an lower end part thereof to conduct excavation, from colliding with the opening, inner wall or bottom of a storage. To realize the purpose, the continuous unloader according to the present invention comprises: a main body part (100); a horizontal conveyor (110) installed above the main body part (100); a vertical conveyor (120) including a screw (123) installed on the fore-end of the horizontal conveyor (110) to be able to rotate; and an inlet feeder (130) installed on the lower end of the vertical conveyor (120). The horizontal conveyor (110) is installed to be able to rotate upward and downward within 18° with respect to horizontality. The vertical conveyor (120) can rotate forward and backward within 30° with respect to verticality. A cutting member (133) composed of three or more blades are installed radially with respect to the axial line of the screw (123) inside the housing of the inlet feeder (130) to be able to pulverize soft coal lumps introduced through an inlet (131). A soft shock absorbing member (135) for absorbing a shock during a collision with the floor of a storage (1) is arranged on the bottom of the inlet feeder (130).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for unloading a bituminous coal using a screw-

The present invention relates to a method of unloading a bituminous coal, and more particularly, to a method of unloading a bituminous coal using a screw-type continuous ship unloader (CSU) The present invention relates to a method of unloading a bituminous coal using an unloading machine.

Generally, bituminous coal used as a heat source in a power plant is a kind of coal, which is transported by a carrier and then unloaded from a quay through a continuous cargo ship. Bituminous coal is subdivided into standard coal and dust coal depending on whether water is contained or not. Specified carbon contains a certain amount of moisture, and dust generation is small when unloading. Since the amount of water contained in the dust charcoal is small, dust can be generated relatively easily compared to the standard charcoal when unloading.

The continuous type unloading machine used for unloading bituminous coal is composed of a bucket type in which a plurality of buckets are operated in an endless track form and a bit type in which a bituminous coal is excavated and a screw type including a vertical conveyor with a rotating screw.

The screw type unloading machine includes a main body moving along a rail provided at a dock, a horizontal conveyor installed at an upper portion of the main body, and a screw rotatably installed at the tip of the horizontal conveyor, The vertical conveyor. In this case, an inlet feeder equipped with a bituminous coal inlet is installed at the lower end of the vertical conveyor so that the bituminous coal is rotated while rotating in a direction opposite to the screw. Such a screw-type unloading machine has been disclosed in the Japanese Patent Laid-Open No. 10-2009-0041775.

Hereinafter, a process of unloading a bituminous coal using a screw-type unloader will be described. First, when the carrier carrying the bituminous coal arrives at the unloading dock, the vertical conveyor of the unloading unit is moved into the hold of the carrier carrying the bituminous coal (hereinafter referred to as "storage"). Then, an inlet feeder provided at the lower end of the vertical conveyor is operated to unload the bituminous coal. The bituminous coal unloaded in this way is conveyed to the low-fusing level through the horizontal conveyor and the conveyor belt installed on the ground.

However, the unloading operation using the screw-type unloader has a great difference in the operation time required for the unloading of the bituminous coal according to the skill level of the operator. Since the time difference is directly related to costs such as demurrage or dispatch money, a method of increasing the efficiency of the unloading operation within a limited time is required.

In addition, the work of loading and unloading the bituminous coal is mainly performed by the operator visually, and as a result of the manual operation, the casing of the vertical conveyor collides with the opening of the storage by mistake of the operator, or the inlet feeder There is a case. In this case, the vertical conveyor and the inlet feeder may be damaged by the impact generated, and the unloading must be stopped in order to repair the damaged part, resulting in a problem that the working efficiency is deteriorated.

The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for efficiently unloading bituminous coal loaded in a carrier by using a screw type continuous unloading machine, It is an object of the present invention to provide a method of unloading a bituminous coal using a screw-type continuous type unloader, which can improve work efficiency by preventing a feeder from hitting an opening, an inner wall, or a bottom surface of a storage.

According to an aspect of the present invention, there is provided a railway cargo handling system comprising a main body moving along a rail provided on a loading dock, a horizontal conveyor installed on an upper portion of the main body, and a screw rotatably installed on the horizontal conveyor A vertical conveyor comprising a vertical conveyor and an inlet feeder rotatably installed at a lower end of the vertical conveyor in an opposite direction to the screw and having an inlet port, And the vertical conveyor is hinged to the front end of the horizontal conveyor so as to be pivotable to the front and rear of the main body. The vertical conveyor is hinged to the front and rear of the main body, , And the housing of the inlet feeder is capable of pivoting the lump of the bituminous coal flowing through the inlet port And a soft impact absorbing member provided on the bottom surface of the inlet feeder for absorbing an impact upon collision with the bottom surface of the reservoir.

In this case, the impact absorbing member is made of urethane or rubber.

The impact absorbing member may further include a resilient supporting member mounted via a spring.

In addition, on the outer circumferential surface of the casing of the vertical conveyor, at least four laser sensors are spaced apart from each other by a predetermined angle with respect to the axis of the casing so as to prevent the vertical conveyor from colliding with the hatch coaming during the loading operation, ; ≪ / RTI >

The main body may further include a steel stripper installed to separate iron pieces contained in the bituminous coal conveyed through the horizontal conveyor by using a magnetic force, A rotary drum installed at an end of the horizontal conveyor to rotate by receiving power; A stationary magnet fixed to the inside of the rotary drum, the stationary magnet having a cross section formed in a sector shape to separate magnetic pieces included in the bituminous coal by applying a magnetic force only to a part of the outer circumference of the rotary drum; And a steel piece receiving box for receiving the iron pieces induced and separated by the fixed magnet.

In the method for unloading a bituminous coal using the continuous unloading machine,

A first step of recognizing the depth of the reservoir and the internal protruding part and the arrangement structure of various structures in advance; A second step of vertically arranging a vertical conveyor at any one of four corners of the storage, and placing the inlet feeder at a position 1 to 1.5 m above the loaded bituminous coal; A third step of unloading the bituminous coal while moving the vertical conveyor in a zigzag from one side of the storage to the other side in a state in which the vertical conveyor is operated and the inlet feeder is inserted into the bituminous coal in a distance of 1 to 1.5 m; A fourth step of removing the bituminous coal adhering to the inner wall of the storage tank after the loading operation is performed until the loaded bituminous coal remains on the floor surface at least 50 cm or less while repeating the third step; And a fifth step of putting the excavator into the storage to collect the bituminous coal remaining on the floor surface and to finish unloading using the vertical conveyor.

In this case, a safety distance of 1 to 2 meters can be secured from the casing through the collision preventing portion so as to prevent the vertical conveyor from colliding with the hatch coaming of the storage, and if it reaches within the safe distance, And restricting movement of the vertical conveyor to a point of collision prediction.

Further comprising the step of finishing the remaining coal by using a separate coal barrels for which unloading is impossible with the vertical conveyor.

According to the present invention, it is possible to efficiently unload the bituminous coal loaded in the carrier according to a predetermined stage by using a screw type continuous unloading machine, and to prevent collision of the bituminous coal with the bituminous coal There is an advantage that the vertical conveyor can prevent the bottom surface of the storage or the opening of the opening during the unloading process, thereby improving the working efficiency.

FIG. 1 is a side view showing a screw type continuous cargo handler according to the present invention,
FIG. 2 is a perspective view showing an inlet feeder provided in the vertical conveyor according to the present invention, FIG.
3 is a bottom view of an inlet feeder according to the present invention,
4 is a side view of an inlet feeder according to the present invention,
5 shows another embodiment of the shock absorbing member according to the present invention,
6 is a side view showing an anti-collision portion according to the present invention,
FIG. 7 is a side view showing the structure and operation principle of the iron chip separator according to the present invention,
8 is a view showing an unloading pattern using a cargo handler according to the present invention,
9 to 11 are photographs showing a process for unloading a bituminous coal using a screw-type continuous type unloading machine according to the present invention,
12 is a side view of the injection part according to the present invention,
13 is a plan sectional view of the injection part according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, the same reference numerals as in the drawings denote the same elements in the drawings, unless they are indicated on other drawings.

FIG. 1 is a side view showing a screw type continuous unloading machine according to the present invention, and FIG. 2 is a perspective view showing a lower end portion of a vertical conveying device according to the present invention.

Referring to FIG. 1, the present invention relates to a screw-type continuous type unloading machine, and more particularly, to a continuous type unloading machine having a main body 100 moving along a rail 10 installed at a loading dock, A vertical conveyor 120 including a horizontal conveyor 110 and a screw 123 installed at a front end of the horizontal conveyor 110 so as to be rotatable and a screw 123 at the lower end of the vertical conveyor 120. [ And an inlet feeder 130 installed to be rotated in the opposite direction to the inlet 131 and having an inlet 131.

The configuration of the present invention will be described in detail as follows.

First, the horizontal conveyor 110 is installed on one side of the main body 100 so as to be pivotable within an angle of 18 degrees above and 18 degrees below the horizontal reference. The vertical conveyor 120 is hinged to the front and rear of the main body 100 at the rotation center of the front end of the horizontal conveyor 110. The vertical conveyor 120 is hinged to the front and rear of the main body 100 by means of a limit sensor (not shown) Lt; RTI ID = 0.0 > 30 < / RTI >

Referring to FIGS. 2 and 3, a cutting member 133 may be provided in the housing of the inlet feeder 130 to finely crush the bituminous coal that has been accumulated in the form of a lump through the inlet 131. That is, when the bituminous coal is conveyed along the screw 123, it may become caught in the casing 121 and the screw 123, which may cause an overload, thereby damaging the screw 123 or the screw driver (not shown) . Here, preferably, the cutting member 133 may have a structure in which three or more blades are formed radially with respect to the axis of the screw 123.

Referring to FIG. 4, the bottom surface of the inlet feeder 130 is provided with a soft shock absorbing member 135 so as to absorb the impact of collision with the bottom surface of the reservoir 1 during finishing unloading work. Preferably, the shock absorbing member 135 may be made of urethane or rubber.

5, in another embodiment, the shock absorbing member 135 may be installed to be resiliently supportable via a spring 137. [ Therefore, even if the operator accidentally hits the bottom of the inlet feeder 130 during the unloading of the bituminous coal, the impact generated by the impact absorbing member 135 is buffered and the vertical conveyor 120 including the inlet feeder 130 is damaged. .

6, the outer surface of the casing 121 of the vertical conveyor 120 is provided with a vertical conveyor 120 for preventing the vertical conveyor 120 from colliding with the edge of the hatch coaming 3 during the unloading operation, An anti-collision portion 140 may be provided. At least four laser sensors 141 are installed at a predetermined angle with respect to the axis of the casing 121 so as to prevent a collision that may occur in all directions of the vertical conveyor 120. [ .

Referring to FIG. 7, the main body 100 may include a steel stripper 150 for separating and collecting impurities such as iron pieces contained in bituminous coal. Preferably, the iron piece separator 150 includes a rotary drum 151 installed at an end of the horizontal conveyor 110 for allowing the bituminous coal to be conveyed to fall on the outer circumferential surface thereof and rotated by receiving power of a motor (not shown) A stationary magnet 153 fixed to the inside of the rotary drum 151 and having an end face formed in a fan shape and separating the iron pieces S contained in the bituminous coal by applying a magnetic force to a part of the outer circumference of the rotary drum 151, And a steel piece receiving cylinder 155 for receiving the iron pieces S induced and separated by the stationary magnets 153.

In this case, the stationary magnet 153 does not rotate but rotates only the rotating drum 151. Therefore, the iron pieces S among the dropped bituminous coals are attached to a portion of the outer circumferential surface of the rotary drum 151 to rotate together, and are guided into the iron piece receiving tube 155 at the point where the magnetic force disappears. Unlike the iron pieces S, the remaining (bituminous coal) other than the iron pieces is free from gravity and is separated and conveyed along a predetermined route as it is not affected by the magnetic force.

Hereinafter, a flexible unloading process using the screw-type continuous type unloading machine according to the present invention having the above-described structure will be described.

First, the operator preliminarily grasps the depth of the reservoir 1, the internal protruding part, and the arrangement structure of various structures provided in the carrier (step 1).

That is, all the carriers are formed so that the internal structures of the reservoirs 1 are different from each other. Therefore, it is necessary to grasp the structures such as the ladder in the storage 1 of the cargo ship, the protruding part of the pipe and the like, and the shape of the reservoir 1 provided at the bow and stern. Thus, the loading and unloading delay due to the collision between the vertical conveyor 120 and the structure during the unloading operation can be prevented. In addition, since the depth of the reservoir 1 is known in advance, it is possible to prevent the inlet feeder 130 from colliding with the bottom at the cargo finishing step.

When the structure of the reservoir 1 is recognized, the operator places the vertical conveyor 120 vertically at any one of the four corners of the reservoir 1, and positions the inlet feeder at a position 1 to 1.5 m above the loaded bituminous coal (Second step). That is, if the vertical conveyor 120 is inclined at an angle, the bituminous coal to be conveyed is biased to one side of the inside of the casing 121, and accordingly, the screws are excessively caught in the screws, have. Therefore, it is desirable to carry out the unloading operation while maintaining the vertical conveyor 120 vertically.

When the vertical conveyor 120 is disposed at the corresponding position, the screw 123 and the inlet feeder 130 are operated, and the vertical conveyor 120 is moved in a state where the inlet feeder 130 is inserted into the bituminous coal 1 to 1.5 m The loading operation is carried out by moving zig-zag from one side of the storage 1 to the other side (the third step). The movement of the vertical conveyor 120 can be performed by drawing various patterns as shown in FIG. For reference, the lower part of the drawing is on the pier, and the upper part is on the sea side. Here, it is preferable that the pattern (long travel) of (4) is mainly used for the unloading work.

In this case, a safety distance of 1 to 2 meters can be secured from the casing through the collision preventing portion 140 so as to prevent the vertical conveyor 120 from colliding with the hatch coaming of the storage 1 (See FIG. 6). That is, when the vertical conveyor 120 reaches or falls within the safe distance, a control unit (not shown) generates an alarm sound and restricts movement of the vertical conveyor 120 .

After the third step is repeatedly carried out, the bituminous coal is removed until the loaded bituminous coal remains on the bottom surface of at least 50 cm or less, and then the bituminous coal adhered to the inner wall of the reservoir 1 is removed as shown in FIG. 9 4). In this case, the bituminous coal removal work can be removed by a worker using a long pole such as bamboo.

Finally, as shown in FIG. 10, the excavator is charged into the reservoir 1 to collect the bituminous coal remaining on the bottom surface, and the finished and unloaded using the vertical conveyor 120 (Step 5). When the vertical conveyor 120 can no longer be unloaded, the remaining coal residues can be finished using a separate coal barrels as shown in FIG.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

12, the outer circumferential surface of the casing 121 of the vertical conveyor 120 may be provided with a dust collecting container (not shown) The injection unit 160 may be further provided to suppress the occurrence of the blower 160 as much as possible. Although the screw type unloading unit is inserted into the casing 121, the screw 123 is less dusty than the bucket type unloading unit, but the dust is hardly contained in the case of the dust burnt. Therefore, it is preferable to provide a separate jet part 160 because dust may be generated at the site of the inlet feeder 130 where the dust is burnt.

Referring to FIG. 13, the jetting unit 160 may have a structure in which a plurality of jetting nozzles 161 are installed on the outer circumferential surface of the casing 121 at a predetermined angle.

The jetting unit 160 forms a water curtain W by spraying the supplied water so as to enclose a part of the bituminous coal (powdery coal) to be excavated through the jetting nozzle 161, It is possible to prevent dust generated at the time of unloading from being diffused to the outside.

In this case, the jetting unit 160 can selectively operate only some of the plurality of jetting nozzles 161.

By using the jetting unit 160, high pressure water is injected toward the bituminous coal fixed on the inner wall of the reservoir 1, so that the bituminous coal can be easily detached.

1: storage 3: opening
10: rail 100:
110: horizontal conveyor 120: vertical conveyor
121: casing 123: screw
130: inlet feeder 131: inlet
133: Cutting member 135: Impact absorbing member
137: spring 140:
141: Laser sensor 150: Iron stripper
151: rotary drum 153: stationary magnet
155: iron storage bin 160:
161: injection nozzle

Claims (8)

delete delete delete delete delete A horizontal conveyor 110 installed at an upper portion of the main body 100 and a screw 120 rotatably installed at the front end of the horizontal conveyor 110. [ A vertical conveyor 120 including a screw 123 and an inlet feeder 130 installed at a lower end of the vertical conveyor 120 so as to rotate in the opposite direction to the screw 123 and having an inlet, However,
The horizontal conveyor 110 is installed in the main body 100 so as to be pivotable within an angle of 18 ° above and below the horizontal reference and the vertical conveyor 120 is disposed at the front end of the horizontal conveyor 110, And is pivotable within 30 ° forward and 30 ° rearward by a limit sensor provided on the hinge portion,
A cutting member 133 having three or more blades on the axial reference axis of the screw 123 is installed in the housing of the inlet feeder 130 so as to crush the bituminous coal flowing through the inlet 131,
And a soft shock absorbing member 135 is provided on the bottom surface of the inlet feeder 130 so as to absorb an impact upon collision with the bottom surface of the reservoir 1,
The shock absorbing member 135 is made of urethane or rubber and is elastically supported by a spring 137,
On the outer circumferential surface of the casing 121 of the vertical conveyor 120,
At least four laser sensors 141 are spaced apart from each other by a predetermined angle with respect to the axis of the casing 121 so as to prevent the vertical conveyor 120 from colliding with the rim of the hatch coaming machine 3 during unloading work, Prevention part 140; And
A plurality of injection nozzles 161 are installed on the outer peripheral surface of the casing 121 so as to be separated from each other at a predetermined angle so as to minimize the generation of dust during the unloading operation,
A water curtain W may be formed by spraying the water supplied through the spray nozzle 161 so as to surround a portion where drilling of the bituminous coal is performed,
Alternatively, only a few desired spray nozzles may be selectively operated among the plurality of spray nozzles 161 to spray water toward the bituminous coal fixed to the inner wall of the reservoir 1,
The main body 100 further includes a steel stripper 150 installed to be able to separate the iron pieces contained in the bituminous coal conveyed through the horizontal conveyor 110 by using a magnetic force,
The iron piece separator 150 includes a rotary drum 151 installed at an end of the horizontal conveyor 110 for allowing the bituminous coal to be conveyed to fall on the outer circumferential surface and rotated by receiving power, A stationary magnet 153 fixedly installed in the rotary drum 151 and having a cross section formed in a sector shape to separate magnetic pieces included in the bituminous coal by applying a magnetic force to a part of the outer circumference of the rotary drum 151, A method for unloading a bituminous coal using a screw type continuous unloading machine including a steel bill receiving box (155)
A first step of grasping in advance the depth of the reservoir (1) loaded with bituminous coal and the internal protruding part and the arrangement structure of various structures;
A second step of vertically arranging the vertical conveyor 120 at any one of the four corners of the reservoir 1 and placing the inlet feeder 130 at a position 1 to 1.5 m above the loaded bituminous coal;
The vertical conveyor 120 is moved in a zigzag manner from one side of the storage to the other side while the inlet conveyor 120 is inserted into the bituminous coal 1 to 1.5 m into the bituminous coal, step;
A fourth step of repeating the third step to remove the bituminous coal adhered to the inner wall of the tank after the loading operation is performed until the loaded bituminous coal remains on the bottom surface of the tank 1 at least 50 cm or less; And
A fifth step of collecting the bituminous coal remaining on the bottom surface into the center by loading an excavator into the storage and finishing loading and unloading using the vertical conveyor 120,
In the third step,
A safety distance of 1 to 2 meters is secured from the casing 121 through the collision preventing portion 140 so as to prevent the vertical conveyor 120 from colliding with the rim of the opening portion 3 of the reservoir 1 And generating an alarm sound when the vertical conveyor 120 reaches a safe distance, and restricting movement of the vertical conveyor 120 to a collision expected point,
In the fourth step,
A shock absorbing member 135 formed of a urethane or rubber material provided on the bottom surface of the inlet feeder 130 and configured to be elastically supported via a spring 137, Can be absorbed,
A plurality of spray nozzles 161 are provided on the outer circumferential surface of the casing 121 through the spray nozzles 161 so as to minimize the generation of dust during the unloading operation, The water curtain W is formed by spraying the water to cover the portion where the drilling of the bituminous coal is performed,
Alternatively, only a few desired spray nozzles may be selectively operated from among the plurality of spray nozzles 161 to spray water toward the bituminous coal fixed to the inner wall of the reservoir 1,
In the fifth step,
And finishing the remaining coal residues when the vertical conveyor 120 can not be unloaded, using a separate coal barrels. delete delete

Images