JPS63180626A - Stacker - Google Patents

Abstract

PURPOSE:To prevent a belt conveyer from meandering by displacing a damper plate in the moving direction of a stacker body in accordance with the movement of the stacker body with the use of drive means. CONSTITUTION:When a stacker body 10 advances, a rod 32 coupled to a damper body 24 is retracted to displace forward the abutting surface of iron ore 22 on the damper plate 24. Meanwhile, when the stacker body 10 moves backward, the rod 32 is extended to displace rearward the abutting surface of the iron ore 22 on the damping plate 24. Accordingly, the iron ore 22 is dropped onto the widthwise center position of a boom belt conveyer 20. Thus, it is possible to effectively prevent the boom belt conveyer 24 from meandering.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a stacker for continuously loading raw materials such as iron ore into an ore storage site.

[Prior Art] Normally, in a raw material yard of a steel mill, iron ore is piled up in a storage area using a stacker, and the iron ore is supplied from the storage area to a sintering factory. The main body of the stacker is installed on a rail provided along the ore storage area, and the stacker moves forward or backward along the ore storage area to reciprocate and has a height that is approximately uniform throughout the entire area of the ore storage area. Iron ore is being piled up in the area. The stacker also has a tripper and a boom. The tripper is provided on the stacker body along the rail and travels on the rail following the stacker body. The boom is provided so as to be able to rotate around the stacker body, and its tip protrudes above the ore storage area. The stacker body is equipped with a rotating chute into which iron ore is introduced, and the belt conveyor (hereinafter referred to as tripper BC) installed in the tripper is passed through the rotating chute.
The iron ore is transferred from there to a belt conveyor (hereinafter referred to as boom BC) installed on the boom, and the iron ore is loaded into the ore storage site by boom BC.

FIG. 3 is a schematic diagram showing the vicinity of a rotating chute in a conventional stacker. The front end of the tripper BC2 is disposed within the rotating chute 5 of the stacker body 1, and the front end of the tripper BC2
Iron ore 3 is thrown into the rotating chute 5 from 2. A buffer plate 4 is provided in the rotating chute 5, and the iron ore 3 charged into the unit collides with the buffer plate 4 and falls onto the conveyance path of the boom BC6 below the rotating chute.

[Problems to be Solved by the Invention] However, in the conventional stacker, the transport path of the tripper BC2 is provided in substantially the same direction as the moving direction of the stacker main body 1, so that the stacker main body 1 moves forward (as shown in the figure). When the iron ore 3 moves in the direction of arrow 7), the falling position of the iron ore 3 shifts backward as shown by the solid line in the figure. On the other hand, when the stacker main body 1 moves backward (moves in the direction of arrow 8 in the figure), the falling position of the iron ore 3 shifts forward as shown by the two-dot chain line in the figure. Since the iron ore 3 contains moisture due to the water spraying for dust prevention, it tends to adhere to the inner surface of the rotating chute 5, and the adhered iron ore 3 may fall down as a lump. For this reason, the iron ore 3 is biased toward the widthwise end of the boom BC6,
There is a problem that the boom BC6 meanderes and various parts of the belt conveyor are damaged.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stacker that can prevent meandering of a belt conveyor.

[Means for Solving the Problems] The stacker according to the present invention is a stacker for continuously loading raw materials onto an ore storage base, and includes a stacker body movably provided along the ore storage base, and a stacker body. a first belt conveyor that moves together with the raw material and conveys the raw material to the stacker body; a second belt conveyor that receives the raw material from the first belt conveyor and conveys it to the ore storage base; and a raw material discharged from the first belt conveyor. a buffer plate that buffers the movement of the raw material and causes it to drop toward the second belt conveyor; and a drive means that is connected to the buffer plate and displaces the buffer plate in accordance with the moving direction of the stacker body. It is characterized by

[Function] In the stacker according to the present invention, the driving means displaces the buffer plate in the moving direction of the stacker body according to the movement of the stacker body, so that the falling position of the raw material is corrected and the raw material is discharged from the first belt conveyor. After colliding with the buffer, the raw material falls into the widthwise center area of the second belt conveyor.

[Embodiments] Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram showing a part of a stacker according to an embodiment of the invention, and FIG. 2 is a side view showing the stacker according to an embodiment of the invention. As shown in Fig. 2, the stacker body 1
0 is mounted on a trolley 14 and moves on the rail 12 at approximately 20 m/min.
It is designed to run at a speed of m. The rail 12 is provided in the longitudinal direction of the ore storage base (not shown), and allows the stacker body 10 to alternately move forward (move in the direction of arrow 36 in the figure) and backward (move in the direction of arrow 38 in the figure). This allows iron ore to be stacked at approximately the same height in the longitudinal direction of the storage base. In addition, the tripper BC16 as a first belt conveyor is supported by a pair of wheels so as to be able to run on the rail 12, and the tripper BC16 serves as a first belt conveyor.
is adapted to move together with the stacker main body 10.

The tripper BC16 moves from the stacker body 10 to the rail 12.
, with its rear end connected to an iron ore source (not shown)
has been reached. Further, the front end of the tripper BC 16 is attached to the input port of the rotating chute 18 of the stacker body 10, and is configured to charge iron ore, for example, into the rotating chute 18 at a speed of about 120 m/min. The swing chute 18 is provided in the middle of the stacker body 10, and a boom BC20 serving as a second belt conveyor extends from below the swing chute 18 toward the ore storage base.

The front end of the boom BC20 has reached the central area in the width direction of the ore storage base. The boom BC20 is provided so as to be able to rotate in a substantially horizontal plane around the stacker body 10, and its front end can be raised and lowered depending on the height of the pile of iron ore stacked on the ore storage base. ing.

As shown in FIG. 1, the front half of the drive wheel 17 of the tripper BC16 has entered the turning chute 18. The swing chute 18 has a substantially upright cylindrical shape, has a diameter of, for example, about 1.6 m, and has a buffer plate 24 therein. The buffer plate 24 is disposed in front of the drive wheel 17, has a shaft 26 at its upper end, and is swingable about the shaft 26. A tip of a rod 32 of a drive device 3o is rotatably connected to the lower part of the buffer plate 24. This drive device 30 is provided outside the swing chute 18, and the rod 3
2 extends substantially horizontally toward the side of the rotating chute 18,
A rod 32 is introduced into the swing chute 18 through the opening 28 . The drive device 30 includes a hydraulic cylinder 33 and a hydraulic motor 34 , and the power supply section of the hydraulic motor 34 is connected to the output side of the control device 35 . The control device 35 has an input end connected to a speed detector (not shown) that detects the moving speed and direction of the stacker main body 10, and controls the amount of power supplied to the hydraulic motor 34 based on the detection signal from the speed detector. is now under control.

Note that the boom BC 20 is disposed directly below the rotating chute 18, and is disposed in a direction intersecting the 6 iron ores colliding with the buffer plate 24, and has a belt width of approximately 1.4 m.

Next, the operation of this embodiment will be explained. Tripper B
C16 feeds the iron ore 22 into the rotating chute 18 at a speed of about 120 m/min while moving the stacker body 10 along the arrow 3.
It moves forward in six directions at a speed of about 20 m/min. A speed detector detects the running speed of the stacker main body 10, and this detection signal is manually input to the control device 35. The control device 35 sends a signal to the hydraulic motor 30 based on the human power signal, and based on this signal, a predetermined amount of current is applied to the hydraulic motor 30 to drive the motor 30, and adjusts the amount of pressure oil in the cylinder 33 to move the rod 32. is moved in and out in the direction of arrow 36. As a result, the buffer plate 24 rotates around the fulcrum 26, and the collision surface of the iron ore 22 is directed forward (
(direction of arrow 36). At this time, as shown by the solid line in FIG. 1, the iron ore 22 flies out from the front end of the tripper BC16 and collides with the buffer plate 24, and the speed difference between the collided iron ore 22 and the stacker body 10 increases. Once the iron ore 22 is gone, the stacker body 10 moves forward while the iron ore 22 falls, so the iron ore 22 falls backward (in the direction of arrow 38) from the collision position with the buffer plate 24, but the collision surface of the iron ore 22 is moved forward. Since iron ore 22 is moving to boom BC20
It falls at approximately the center position in the width direction. On the other hand, when the stacker main body 18 reaches the ore storage end, the wheels of the cart 14 are reversed, and the stacker main body 10 is moved in the direction of the arrow 38 at a rate of about 200 m/min.
Move backwards at a speed of m. At this time, the speed detector detects the traveling speed of the stacker main body 10, and this detection signal is input to the control device 35. The motor 30 is driven based on this input signal, adjusts the amount of pressure oil in the cylinder 33, and
to project in the direction of arrow 38. As a result, the buffer plate 24
rotates around the fulcrum 26, and the collision surface of the iron ore 22 moves rearward (in the direction of arrow 38). Therefore, the iron ore 22 traces a trajectory as shown by the two-dot chain line in FIG.
20 at approximately the center position in the width direction.

According to the above embodiment, when the stacker body moves forward, the rod connected to the buffer plate is moved back and forth to displace the collision surface of the iron ore on the buffer plate forward, while when the stacker body moves backward, the rod is moved back and forth. The impact surface of the iron ore on the buffer plate is displaced backward by protruding, so that the iron ore hits boom B.
It will fall to the center position in the width direction of C. Therefore, meandering of the boom BC could be effectively prevented.

[Effects of the Invention] According to the present invention, since the buffer plate is displaced in accordance with the movement of the stacker main body, the falling position of the raw material can be corrected, and meandering of the second belt conveyor can be effectively prevented. can.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a part of a stacker according to an embodiment of the present invention, Fig. 2 is a side view showing the stacking force according to the invention, and Fig. 3 is a schematic diagram showing a part of a conventional stacker. be. 10; stacker body, 16; tripper belt conveyor (
first belt conveyor), 18; rotating chute, 20;
Boom belt conveyor (second belt conveyor), 22
; Iron ore, 24; Buffer plate, 32: Rod, 33; Hydraulic cylinder.

Claims (1)

[Claims] In a stacker that continuously loads raw materials into an ore storage area, a stacker body is provided to be movable along the ore storage area;
a first belt conveyor that moves together with the stacker body and conveys the raw material to the stacker body; a second belt conveyor that receives the raw material from the first belt conveyor and conveys it to the ore storage area; a buffer plate that receives the raw material, buffers the movement of the raw material, and causes the raw material to fall toward the second belt conveyor; and a drive means that is connected to the buffer plate and displaces the buffer plate in accordance with the moving direction of the stacker body. A stacker comprising: