KR101224015B1 - Apparatus for crushing coal and reclaimer - Google Patents

Abstract

The present invention relates to a raw coal shredding apparatus of a reclaimer facility for transferring raw materials from a raw material yard of a steel mill, and when the air temperature is lowered below freezing point, the frozen coal is crushed and transferred to chute. The present invention relates to a raw coal crushing device and a reclaimer device using the same to eliminate bottlenecks and minimize maintenance and maintenance work. The reclaimer device according to the embodiment of the present invention includes a conveyor belt to which the raw coal is siledly conveyed, a sensing bar that senses whether the raw coal to be conveyed on the conveyor belt is larger than or equal to a predetermined size, and a crushing holder having an inclined top surface; And a crusher for crushing the raw coal flowing down along the upper surface of the crushing cradle, and a collector for collecting the raw coal falling from the conveyor belt and transferring it to the upper surface of the crushing cradle when detected by the sensing bar. do.

Description

Apparatus for crushing coal and reclaimer

The present invention relates to a raw coal shredding apparatus of a reclaimer facility for transferring raw materials from a raw material yard of a steel mill, and when the air temperature is lowered below freezing point, the frozen coal is crushed and transferred to chute. The present invention relates to a raw coal crushing device and a reclaimer device using the same to eliminate bottlenecks and minimize maintenance and maintenance work.

In general, steel mills deposit various kinds of raw materials (iron ore, coal, limestone, etc.) in a yard and discharge them as a reclaimer facility, load them on a belt device, and transport them to a required place of use. In addition, the reclaimer equipment is passed through the chute in the process of loading the conveyor belt through the chute. In such chute, when the particle size of the raw coal is large, a bottleneck occurs in the chute so that the raw coal transported is uniform. Particle size is required.

However, since most of the coal briquettes are mixed with large diameter gangue and iron pieces, such large gangue and iron pieces are directly filtered by a worker through a separate grizzly bar. In this case, the work is stopped and a separate maintenance must be performed.

On the other hand, this type of work is generally smooth in summer, but in winter when the air temperature drops below freezing point, moisture contained in raw materials, moisture from snow, rain, etc., YARD Moisture freezes due to moisture, such as water from the watering system of the raw material is frozen in a lump to each other and frozen coal is generated, frequent work breaks occur, resulting in a significant decrease in work productivity.

The technical problem of the present invention is to crush the raw coal transported through the reclaimer device is detected as a form of frozen coal. In addition, the technical problem of the present invention is to provide a structure for collecting the frozen coal from the raw coal and transported to the crusher holder. In addition, the technical problem of the present invention is to provide a device structure for crushing the frozen coal transferred to the crusher holder. In addition, the technical problem of the present invention is to crush the frozen coal in the step in the conveyor belt which is the starting point of transfer.

The recramer raw coal crushing device according to the embodiment of the present invention includes a crushing holder having an inclined top surface, a crusher for crushing the raw coal flowing down along the upper surface of the crushing stand by rotating a plurality of protruding bars, and a conveyor. And a collector for introducing the raw coal transported on the belt to the upper surface of the crushing holder.

The collector has a collector shaft which is a rotation axis of the collector, a mesh shape, and one end of the mesh is connected to one side of the collector shaft and a collector network connected along a longitudinal direction of the collector shaft. And a collector motor for providing rotational power.

The shredding holder includes a base part having an inclined top surface, a shredder bracket in which a plurality of protruding rods protruding from the front wall of the base part are inclined, and plate plates disposed on both side walls in the longitudinal direction of the base part. A side cover.

The crusher may include a crusher shaft which is a rotation axis of the crusher, a crusher hammer in which a plurality of crushing hammers are spaced apart along the longitudinal direction of the crusher shaft, a shaft tooth gear connected to one end of the crusher shaft, and the shaft tooth gear. And a crusher motor unit for providing rotational power.

The reclaimer device according to the embodiment of the present invention includes a conveyor belt to which the raw coal is siledly conveyed, a sensing bar that senses whether the raw coal to be conveyed on the conveyor belt is larger than or equal to a predetermined size, and a crushing holder having an inclined top surface; And a crusher for crushing the raw coal flowing down along the upper surface of the crushing cradle, and a collector for collecting the raw coal falling from the conveyor belt and transferring it to the upper surface of the crushing cradle when detected by the sensing bar. do.

According to the embodiment of the present invention, when the raw coal is detected as a form of frozen coal, the bottleneck of the chute can be eliminated by crushing and transporting the raw coal. This minimizes maintenance work. In addition, by minimizing maintenance and maintenance work, work productivity can be greatly improved. In addition, while the entire transport system is stopped when the frozen coal occurs at a specific transport location in the related art, the embodiment of the present invention can easily transport the frozen coal to each location by crushing the frozen coal in the conveyor belt.

1 is a view showing a state in which a raw coal crushing device is mounted on the reclaimer according to an embodiment of the present invention.
Figure 2 is a view showing an external perspective view of the raw coal crushing device of the recycler according to an embodiment of the present invention.
3 is an exploded perspective view of the raw coal crushing device of the reclaimer according to an embodiment of the present invention.
4 is a view showing the operation of the raw coal crushing device of the recramer according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you. Wherein like reference numerals refer to like elements throughout.

1 is a view showing a state in which a raw coal crushing device is mounted on the reclaimer according to an embodiment of the present invention.

In the embodiment of the present invention, in the raw coal transport operation of discharging the raw coal (COAL) loaded in the yard 20 (YARD) using the reclaimer 10 and transferring the multi-stage using the ground belt 320, condensation by moisture The apparatus 100 for crushing the frozen coal.

In other words, in the operation of transporting raw coal from the reclaimer, as the air temperature drops during the winter season, the natural moisture of the raw material itself, the increase of water due to rain or rain, the increase of water due to the YARD watering system, etc. Freezing occurs due to the factor, and the frozen coal grows gradually, causing bottlenecks in the raw coal transport passage. The frozen coal is crushed to prevent this.

The refrigerant crushing coal shredding device 100 is provided with a shredding device at the end of the conveyor belt 310, so that the raw coal falling from the conveyor belt 310 to the chute 400 located below is larger than a specific size. In this case, the shredding device has a structure to collect the raw coal larger than a certain size in the middle and shred it to fall to the chute 400.

Therefore, since the raw coal falling to the chute 400 becomes below a certain size, the raw coal is not overflowed to the chute and does not leave the skirt that is the guide plate on the upper part of the ground belt 320, so that the raw coal can be transported stably along the ground belt 320. Do. In addition, since the raw coal is crushed, even if the width of the ground belt 320 becomes narrow, no bottleneck occurs.

To this end, the reclaimer device 10 according to an embodiment of the present invention, a sensing bar for detecting whether the raw coal is conveyed to the conveyor belt 310 and the raw coal transported on the conveyor belt is a predetermined size or more ( 200 and a collector 120 for collecting the raw coal falling from the conveyor belt 310 and being transferred to the upper surface of the crushing holder 140 when detected by the sensing bar, and a crushing holder having an inclined upper surface ( 140 and a crusher 160 for crushing the raw coal flowing down along the upper surface of the crushing holder 140.

The operation of the reclaimer device according to an embodiment of the present invention will be described in more detail.

The raw coal collected from the yard 20 is transported along the conveyor belt 310, and the raw coal may be of various sizes, and in particular, the raw coal may be frozen to be more than a predetermined size in winter.

In the case of the raw coal having a predetermined size or less, it is conveyed along the conveyor belt 310 and freely dropped to the chute 320 to be moved to the desired place along the ground belt. At this time, the collector having a net-shaped collector network maintains the collector network in the Y-axis vertical direction, so as not to collect the raw coal falling.

However, when the raw coal is frozen under the influence of moisture and temperature, and the sensing bar 200 detects that the raw coal is larger than a predetermined size (hereinafter referred to as 'frozen coal'), the collector 120 is The raw coal falling from the conveyor belt is collected and transferred to the crushing holder 140. At this time, the collector 120 rotates the collector network 121 of the collector in the vertical state of the Y-axis direction, and collects the raw coal (freeze coal) more than a specific magnitude | size by rotating the collector network 121 in the inclined state. That is, the collection net 121 is rotated counterclockwise to 135 degrees upward, and the frozen coal is collected in an inclined form in which the end of the collection net 121 is positioned above the start end.

The point of time when the collection network 121 of the collector 120 is rotated from the vertical state to the inclined state is until the frozen coal detected by the sensing bar 200 reaches the end of the conveyor belt 310. It is determined considering the time. Since the conveying speed of the conveyor belt 310 and the sensing position of the sensing bar 200 are known, such a viewpoint can be determined.

The collecting network 121 of the collector 120 has a mesh form of a lattice unit to catch and collect raw coal larger than the lattice unit. Therefore, raw coal having a size smaller than that of frozen coal does not need to be crushed, so it passes through the collecting network 121 and falls into the chute 400. Otherwise, the frozen coal having a specific size or more is caught by the collecting network 121. Are collected. The collected frozen coal flows naturally along the upper surface of the inclined collecting network 121 and is placed on the upper surface of the crushing holder 140. The upper surface of the shredding cradle has an inclined surface, which naturally flows into the freezing coal to reach the bottom of the shredding cradle. The frozen coal thus reached is crushed by the shredder 160.

Hereinafter, the raw coal crushing apparatus will be described with reference to FIGS. 2 and 3.

2 is a view showing an external perspective view of the reclaimer raw coal crushing device according to an embodiment of the present invention, Figure 3 is a view showing an exploded perspective view of the reclaimer raw coal crushing device according to an embodiment of the present invention.

The reclaimer raw coal crushing device 100 according to the embodiment of the present invention includes a collector 120, a crushing stand 140, and a crusher 160.

The collector 120 performs a function of collecting the raw coal larger than a predetermined size from the raw coal flowing along the conveyor belt and providing the raw coal to the crushing holder 140. To this end, the collector includes a collector network 121, a collector shaft 122, and a collector motor 123.

Collecting network 121 has a mesh form of a grid unit, and the frozen coal of a predetermined size or more is collected in the mesh. The grid unit of the mesh may have various grid unit types such as square, triangular, hexagonal, and circular shapes. The mesh is implemented with a material capable of supporting the frozen coal, for example, a plastic material having a hardness such as polypropylene. On the other hand, the collecting network 121 may have a mesh structure by crossing a plurality of horizontal bars and vertical bars in addition to the grid unit.

One end of the collecting network 121 is connected along the longitudinal direction of the collector shaft 122. Accordingly, as the collector shaft 122 rotates, the mesh net is also rotated, and is placed in the vertical direction so as to be in close contact with the rear wall of the base portion 141 of the shredding holder 140 or to rotate the base portion 141. It can be located in an inclined form spaced apart from the rear wall of the).

The collector shaft 122 is an axis that rotates along a rotation axis, and the collector network is fixedly fastened along the longitudinal direction of the shaft to the outer diameter surface of the collector shaft 122. The collector motor 123 is connected to one end of the collector shaft to provide rotational power of the collector shaft. In addition, the collector 120 may include bearings 124 supporting the rotating shaft of the collector shaft 122 on both sides, and may include a reducer 125 that reduces the speed of the collector motor 123. .

The crushing stand 140 is a body body in which the frozen coal collected from the collector 120 serves as a crushing stand, and includes a base part 141, a crusher bracket 142, a side cover 143, and a fixed locking jaw ( 144).

The base portion 141 has an inclined top surface, and the frozen coal collected in the collector 120 is placed on the inclined top surface, and the frozen coal flows down the top surface along the inclined surface. The rear wall of the base portion 141 is provided with a fixed locking jaw 144, the fixed locking jaw has a locking jaw structure is fixed to the support (not shown).

The front wall of the base portion 141 is provided with a shredder bracket 142. The shredder bracket 142 has a plurality of protruding rods protruding from the front wall of the base portion 141 spaced apart from each other. The plurality of protruding bars are spaced apart from each other so that a small size of frozen coal escapes between the gaps and falls into the lower chute. In the case of the frozen coal having a size larger than the spacing between the protruding rods, it is caught by the protruding rods and placed on the upper surface of the crusher bracket 142.

The ends of the plurality of protruding bars have a bent structure like the 'b' shape so that the raw coal does not escape from the upper part of the protruding bar. Therefore, the raw coal flowing down from the inclined top surface of the base portion 141 is placed on the top of the crusher bracket, and the raw coal having a size smaller than the spaced gap of the protrusion rod falls out between the spaced gaps, and is larger than the spaced gap of the protrusion rod. The raw coal of size is caught in the protruding rod and does not fall.

The side cover 145 is a plate plate located on both side walls in the longitudinal direction of the base portion, and serves as a guide to prevent the raw coal from escaping to both sides of the base portion.

On the other hand, the frozen coal that flows down into the shredding holder 140 is crushed by the shredder 160 and dropped between the protruding rod gaps of the shredder bracket 142. The shredder 160 for shredding the frozen coal is a shredder. And a shaft 161, a crusher hammer 162, a shaft gear 163, and a crusher motor unit 164. The shredder shaft 161 is a rotating shaft, and bearings 166 are provided on both sides of the shredder shaft to support the shredder shaft.

The shaft tooth gear 163 is connected to one end of the crusher shaft 161. The shaft tooth gear 163 is meshed with the motor gear 173 to rotate with the rotational force of the motor gear 173, thereby causing the shredder shaft 161 to rotate. In addition, the shaft wheel 165 is connected to the other end of the crusher shaft 161. The shaft wheel serves as a guide bar to prevent the crushed frozen coal from breaking out when frozen coal is broken.

The motor gear 173 meshed with the shaft gear gear 163 is connected to the motor 171 to receive rotational power from the motor. A reducer 172 is provided between the motor 171 and the motor gear 173 to reduce the rotation speed of the motor. In general, in the case of a motor, since the rotational force (rpm) is fast, a reduction gear is provided so that the rotational force of the motor is not directly transmitted to the gear gear. That is, by placing the reducer 172, the rotational speed of the crusher shaft 161 can be lowered to allow the frozen coal to flow into the crusher bracket 142.

The crusher hammer 162 performs a function of crushing the frozen coal caught in the crusher bracket. For this purpose, the crusher hammer 162 is fixed by fastening a plurality of crushing hammers spaced along the longitudinal direction of the crusher shaft 161. . Therefore, as the crusher shaft rotates, the crushing hammer is also rotated so as to strike and crush the frozen coal caught on the upper surface of the crusher bracket 142. The blow crushed frozen coal flows down between the protruding bar gaps of the crusher bracket 142 and falls into the chute located in the ground belt. The outer surface of the crusher hammer 162 may have a sharp cross section, it can be implemented to facilitate crushing.

The plurality of crushing hammers provided in the crusher hammer 162 are spaced apart to intersect between the protruding bars of the crusher bracket 142. Therefore, as the crusher shaft 161 rotates, the crushing hammer of the crusher hammer 162 also rotates. The crusher hammer 162 rotates intersecting between the protruding bars of the crusher bracket 142 so that the crushing hammer of the crusher bracket 142 rotates. The frozen coal placed on top can be crushed.

On the other hand, the shredder 160 may be further provided with a shredder fastener 180 for fastening the support. To this end, a weight 167 is provided on an outer surface of the shaft gear gear 163 provided on one side of the crusher shaft, and an outer surface of the shaft wheel 165 provided on the other side of the crusher shaft, respectively. The crusher fastener 18 may be fastened to support the crusher. The weight pin 168 protruding from the weight is inserted into the socket 184 of the crusher fastener so that the crusher shaft can be cranked with the rotation of the shaft tooth gear 163.

The shredder fastener 180 includes a weight shaft socket 182, a weight shaft 183, a socket 184, and a fixing pin 181. The weight shaft socket 182 and the weight shaft 183 perform a linear piston operation.

The weight shaft 183 includes a socket 184, and the weight pin 168 provided in the shaft gear gear or the shaft wheel is inserted into the socket 184. The upper end of the weight shaft 183 is inserted into the weight shaft socket 182 to perform a rotary crank-type linear motion having vertical piston movement along the length direction of the weight shaft socket 182.

That is, when the shaft gear gear 163 is rotated so that the weight 167 is located below the shaft gear gear 163, the weight shaft 183 protrudes from the weight shaft socket 182 and has an extended length. When the shaft gear gear 163 is rotated so that the weight 167 is located above the shaft gear gear, the weight shaft 183 enters the direction in which the shaft gear 182 is inserted, and the shredder fastener has a contracted length as a whole. .

The upper portion of the weight shaft socket 182 is provided with a weft shaft socket coupling groove, and is fastened to a support (not shown) through the fixing pin 181. Therefore, the crusher fastener can be rotated around the fixing pin.

4 is a view showing the operation of the raw coal crushing device of the recramer according to an embodiment of the present invention.

As shown in Fig. 4A, when the frozen coal is not detected, the collecting network of the raw coal crushing device is in close contact with the rear wall of the base portion in the Y-axis direction (vertical direction). In the state of FIG. 4 (a), the crusher hammer is positioned in such a manner as to engage with the spaced gap of the protruding bar of the crusher bracket.

When the frozen coal is detected by the sensing bar, the collecting network of the raw coal crushing device is rotated and raised in the counterclockwise direction as shown in FIG. 4 (b) to have an inclined surface. For example, it rotates 135 degrees clockwise at the position of FIG. 4 (a), and has a structure as shown in FIG. 4 (b). At this time, the collecting network rotates in the counterclockwise direction, and the crusher hammer also rotates clockwise to be spaced apart from the crusher bracket. When spaced apart, the crusher hammer is rotated counterclockwise to bring it into close contact with the crusher bracket. The motor control is performed by repeating the forward and backward rotation of the shaft gears so that such separation and close contact is repeated at regular intervals between the surface of the crusher bracket and the crusher hammer.

Since the collecting network has an inclined structure, the frozen coal (raw coal larger than a predetermined size) collected by the collecting network slides along the inclined surface as shown in FIG. Reach the bottom. In other words, it reaches the lower end of the crusher bracket as a natural movement along the slope of the collecting network and the slope of the crusher holder.

When the crusher hammer is in close contact with the crusher bracket, the crusher hammer hits the frozen coal and crushes, and the crushed raw coal falls out between the gaps between the protruding rods of the crusher bracket.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

100: coal briquetting device 120: picker
121: collector network 122: collector shaft
123: picker motor 140: shredding holder
141: base portion 142: shredder bracket
143: side cover 144: fixing stop
161: shredder shaft 162: shredder hammer
163: shaft gear gear 164: crusher motor

Claims (14)

delete A crushing holder having an inclined top surface;
A crusher for crushing the raw coal flowing down along the upper surface of the crushing stand by rotating a plurality of protruding rods;
A collector shaft, which is a rotation axis of the collector, has a mesh shape and one end of the mesh is connected to the collector network along the longitudinal direction of the collector shaft, and is connected to one end of the collector shaft to provide rotational power. A collector, including a collector motor, for introducing the raw coal transported on a conveyor belt to an upper surface of the crushing holder;
Raw coal crushing device of the reclaimer comprising a. A base part having an inclined upper surface, a crusher bracket in which a plurality of protruding rods protruding from the front wall of the base part are inclined spaced apart, and a side cover which is a plate plate located on both side walls in the longitudinal direction of the base part; Shredding holders made;
A crusher for crushing the raw coal flowing down along the upper surface of the crushing stand by rotating a plurality of protruding rods;
A collector for introducing raw coal transported on a conveyor belt to an upper surface of the crushing holder;
Raw coal crushing device of the reclaimer comprising a. The apparatus of claim 3, wherein the ends of the plurality of protruding rods are formed in a 'b' shaped bending structure. The method of claim 3, wherein the shredder,
A crusher shaft which is a rotation axis of the crusher;
A shredder hammer in which a plurality of shred hammers are spaced apart along the length of the shredder shaft;
A shaft gear gear connected to one end of the crusher shaft;
A crusher motor unit providing rotational power to the shaft gear gear;
Raw coal crushing device of the reclaimer comprising a. The method of claim 5, wherein the shredder motor unit,
A motor for providing rotational power;
A speed reducer for adjusting a driving speed of the motor;
A gear gear meshed with the shaft gear gear and receiving rotational power of the motor;
Raw coal crushing device of the reclaimer comprising a. The apparatus of claim 5, wherein the plurality of crushing hammers are spaced apart from each other to intersect the protruding bars of the crusher bracket. delete A conveyor belt through which raw coal is conveyed to the sealer;
Sensing bar for detecting whether the raw coal transported on the conveyor belt is more than a predetermined size;
A crushing holder having an inclined top surface;
A crusher for crushing the raw coal flowing down along the upper surface of the crushing holder;
When detected by the sensing bar, the collector for collecting the raw coal falling from the conveyor belt to transfer to the upper surface of the crushing holder;
Including, the collector,
A collector shaft which is a rotation axis of the collector;
A collecting network having a mesh shape and having one end of the mesh connected along a length direction of the collector shaft;
A collector motor connected to one end of the collector shaft to provide rotational power;
Reclaimer device comprising a. The reclaimer device according to claim 9, wherein the collecting device rotates the collecting network from a vertical state to an inclined state when the raw coal transported on the conveyor belt has a predetermined size or more. The method according to claim 9, wherein the shredding holder,
A base portion having an inclined top surface;
A crusher bracket in which a plurality of protruding rods protruding from the front wall of the base part are arranged spaced apart from each other;
A side cover which is a plate plate located on both side walls in the longitudinal direction of the base part;
Reclaimer device comprising a. The method according to claim 11, wherein the shredder,
A crusher shaft which is a rotation axis of the crusher;
A shredder hammer in which a plurality of shred hammers are spaced apart along the length of the shredder shaft;
A shaft gear gear connected to one end of the crusher shaft;
A crusher motor unit providing rotational power to the shaft tooth gear;
Reclaimer device comprising a. The reclaimer device of claim 12, wherein the plurality of shred hammers are spaced apart to intersect between the protruding bars of the shredder bracket. The reclaimer device according to claim 12, wherein after being detected by the sensing bar, a retarder device provides rotational power to the shaft gear after a predetermined time elapses.

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