KR20020052120A - apparatus for testing the charging angle and partiality load of rotation chute in furnace - Google Patents

Abstract

PURPOSE: An apparatus for testing charging angle and deflection load of a rotation chute in blast furnace is provided to deduce angle of the rotation chute by sensing angle of a tilting gear box, grasp weight exerted on the tilting gear box, and apply load similar to operating conditions to the tilting gear box. CONSTITUTION: The apparatus for testing charging angle and deflection load of a rotation chute in blast furnace comprises a body part comprising a cylindrical base having a checking window, a rotation main gear(12) rotated by a rotation motor(10) and a tilting main gear(13) tilted by a tilting motor(11) which are equipped at a drive unit(2) installed on the upper surface of the base, and a tilting gear box(3) having tilting arms(16) that are connected to the tilting main gear(13) by means of tilting speed reduction gears(14), wherein a rotation chute(4) is mounted on shafts of the tilting arms(16); a detection part comprising a first electronic level for detecting rotation angle of the shafts(7), a load cell for measuring load of the tilting gear box(3), and a second electronic level(220) for detecting actual rotation angle of the rotation chute(4); a test load part comprising a test weight(310) mounted on the rotation chute(4) to give load of weight, and a mounting groove(311) formed on the test weight(310) so that an additional weight is mounted on the mounting groove(311); and a control part(400) comprising a measured value indicator(410) for transmitting values detected at the first and second electronic levels and load cell, a computer(420) for analyzing data and instructing operation, and a controller for driving the rotation and tilting motors(10,11) by receiving instructions of the computer(420).

Description

Apparatus for testing the charging angle and partiality load of rotation chute in furnace}

The present invention relates to a device for inspecting the charging angle and the unloading load of the blast furnace turning chute, more specifically, the angle of the turning chute by detecting the angle of the tilting gear box to up and down the turning chute in the blast furnace drive unit to a certain angle The load angle of the blast furnace swing chute to obtain the weight of the tilting gearbox according to the angle of the swing chute, and to load the blast furnace in the actual operation situation by applying a load similar to the operating conditions in the repairing of the tilting gearbox. It relates to a degree and unload load inspection device.

In general, the process of producing molten iron in the blast furnace process, as shown in Figure 1, after weighing the basis weight of the raw material to be put into the blast furnace (1) through the charge transport conveyor belt (6) charging of the upper part of the blast furnace (1) Temporarily stored in the water hopper (8), and the charging of the load into the blast furnace (1) through the lower vertical chute and the turning chute (4).

And, as shown in Figure 2, the process of charging the raw material in the Sanging swing chute (4), the gear box equipped with the swing chute (4) inside the drive unit rotates 360 ° continuously while the turning chute ( As 4) turns up and down from 3 ° to 46.5 °, the load 9 is charged evenly in the blast furnace.

That is, the blast furnace as a facility for producing iron by melting and reducing the iron ore, as shown in Figure 3, the top of the chute chute 4 and the turning chute for charging the iron ore and raw coal into the upper 4) each having a tilting gearbox 3 for driving.

The tilting gearbox 3 receives the rotational force from the tilting main gear 13 in the blast furnace drive unit 2 to operate the tilting reduction gear 14 to rotate the tilting shaft 7 to rotate the tilting shaft 7. The swing chute (4), which is fixed at the bottom, is raised and lowered, and is configured to evenly distribute the iron ore in the blast furnace (1).

In general, the method of charging the charge (9) into the blast furnace (1) to the particle size is discharged from the coke storage tank to charge the intermediate coke into the coke relay storage tank (8), discharge the opposing ore from the ore storage tank to the relay storage tank (8) Charge the small particle ore from the small ore storage tank into the relay storage tank (8), and in the relay storage tank (8) charge the coke to be charged in the center of the blast furnace, and then weighed in a basis weight machine to make the coke primary, ore ore 1 One cycle charging is completed by discharging and repeatedly charging from the relay storage tank in the order of charge and small ore primary charge.

However, in the conventional charging process, the rotation of the drive unit 2 and the angle of the turning chute 4 are different from the actual angle and the operating angle of the cab, so that the ore directly loaded into the blast furnace 1 is required by the driver. The amount and value of the drop in the location will be different.

In other words, the ore should slide down the turning chute 4 at a certain angle and fall from the tip of the chute 4 to reach a desired position. there was.

Accordingly, the present invention has been made in view of such a conventional problem, the object of which is to detect and analyze the amount of change of angle according to the position while the drive unit rotates 180 °, and receives the tilting gearbox according to the angle of the turning chute The distribution of force, that is, the center of gravity is at the center when the swing chute is at an angle of 3 °, but the center of gravity moves to the side as the angle gradually increases, and the correlation between the change in the center of gravity and the swing chute angle when the swing chute is at 46.5 degrees The purpose of the present invention is to provide a load angle and unload load inspection device for blast furnace turning chute that can calculate the loading angle of the ore charged into the furnace by analyzing the relationship so that the load distribution can be loaded in the right position according to the operation situation.

1 is a state diagram in which the charge is charged in a general blast furnace,

2 is a schematic diagram showing a track in which charges are charged in a general blast furnace;

Figure 3 is a perspective view showing a charging angle and the load test device of the blast furnace turning chute according to the present invention,

Figure 4 is a perspective view showing the base employed in the charging angle and unload load inspection apparatus of the blast furnace turning chute according to the present invention,

5 is a perspective view showing a detection unit employed in the charging angle and unload load inspection apparatus of the blast furnace turning chute according to the present invention,

6 is an exploded perspective view of the first level sensor employed in the charging angle and the unload load inspection apparatus of the blast furnace turning chute according to the present invention,

Figure 7 is a load shell installation state employed in the charging angle and load test device of the blast furnace turning chute according to the present invention,

8 is a perspective view showing a test load portion employed in the charging angle and the unload load inspection apparatus of the blast furnace turning chute according to the present invention,

Figure 9 is a state of turning the chute chute in the charging angle and load test device of the blast furnace turning chute according to the present invention,

10 is a schematic diagram showing a control unit employed in the charging angle and the unloading load inspection apparatus of the blast furnace turning chute according to the present invention,

Figure 11 is a state in which the turning chute is rotated in the charging angle and load test device of the blast furnace turning chute according to the present invention.

Explanation of symbols on the main parts of the drawings

2 ..... Unit box 3 ..... Tilting gear box

4 ..... Turning suit 7 ..... Shaft

10 .... turning motor 11 .... tilting motor

120 ... Base 210 ... First Electronic Level

220 ... Second Electronic Level 230 ... Road Shell

310 ... Test weight 320 ... Additional weight

410 ... measured value indicator 430 ... controller

As a technical configuration for achieving the above object, the present invention,

A cylindrical base having an inspection window, and a drive unit installed on the upper surface of the base are provided with a turning main gear rotated by a turning motor and a tilting main gear tilted by a tilting motor, and a tilting deceleration on the tilting main gear. A main body unit having a tilting gear box having a tilting arm connected via a gear, and having a swing chute mounted on a shaft of the tilting arm;

A detector having a first electron level for detecting the rotational angle of the shaft, a load cell for measuring the load amount of the tilting gear box, and a second electron level for detecting the actual swing angle of the swing chute;

A test load part equipped with a test weight so as to give a load of load to the swing chute, and forming a mounting groove into which the additional weight can be mounted;

A measurement value indicator and a computer for analyzing and instructing operation of data and a controller for driving the turning and tilting motors under the instruction of the computer; By providing a charging angle and unload load inspection apparatus of the blast furnace turning chute characterized in that it comprises a control unit having.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing a charging angle and unloading load inspection apparatus of the blast furnace swing chute according to the present invention, Figure 4 shows a base employed in the charging angle and unloading load inspection apparatus of the blast furnace swing chute according to the present invention. 5 is a perspective view illustrating a detection unit employed in the blast furnace turning chute chute chute according to the present invention, Fig. 6 is a loading angle and the load of the blast furnace turning chute chute according to the present invention Figure 1 is an exploded perspective view of the first level sensor employed in the inspection apparatus, Figure 7 is a load shell installation state employed in the angular loading angle and unload load inspection device of the blast furnace turning chute according to the present invention, Figure 8 is a blast furnace according to the present invention 9 is a perspective view showing a test load portion employed in the loading angle and unloading load inspection apparatus of the swing chute, and FIG. 9 is a view showing that the swinging chute is swung in the loading angle and unloading load inspection apparatus of the blast furnace turning chute according to the present invention. 10 is a schematic view showing a control unit employed in the blast furnace turning chute chute chute chute according to the present invention, Figure 11 is a charging angle and load inspection of the blast furnace turning chute chute according to the present invention This is a state diagram in which the swing chute rotates in the apparatus.

3 to 11, the apparatus 500 of the present invention simulates by applying a load similar to the operation of charging the charges through the turning chute 4 in the blast furnace operation to be charged to the blast furnace in the actual operating situation. As such, the apparatus 500 includes a main body 100, a detection unit 200, a test load unit 300, and a control unit 400.

That is, the main body 100 includes a cylindrical base 120 having a check window 121 formed thereon so as to check an inner space on an outer surface thereof, and forming a screw hole 122 on an upper surface of the base 120. The drive unit 2 is attached thereto.

The drive unit 2 includes a swing main gear 12 that is rotated by the swinging motor 10 and a tilting main gear 13 that is tilted by the tilting motor 11, as in the upper part of the blast furnace. And a tilting gear box 3 having a tilting arm 16 connected to the tilting main gear 13 via a tilting reduction gear 14, while the shaft 7 of the tilting arm 16 It is equipped with the turning chute 4 rotated 3 to 46.5 degrees up and down by the tilting motor 11 and at the same time rotated by 360 ° by the rotational driving force of the turning motor 10.

In addition, the detector 200 mounts a clamp 209 having an electronic level settling 211 on one end of the shaft 7 as a fixing bolt 213, and the tilting motor on the settling 211. The first electronic level 210 is mounted to detect the rotation angle of the shaft 7 rotated by the driving force of the eleven, and the tilting gear box 3 is disposed at the left and right ends of the shaft 7. In the lower part of the fixing bolt is fastened to the fixed base (2a) of the unit box (2) of the pair of load shell 230 is rotated together with the swing chute (4) to measure the load of the tilting gear box (3) 231) on both the left and right sides.

In addition, on the inner surface of the swing chute 4, the tilting gear box 3 may detect the actual pivot angle of the swing chute 4, which is pivoted up and down with the shaft 7 as the pivot axis. The electronic level 220 is mounted as the fixing bolt 221.

In addition, the test load unit 300 is equipped with a test weight 301 to give a load of the load to the swing chute (4), the lower surface of the test chute 301 to the orbital chute (4) At least one mounting groove 311 into which the additional weight 320 may be inserted may be formed so as to artificially generate a load variation by adding a.

Accordingly, the load of the tilting gear box 3 can be detected by the load shell 230 when the swing angle of the swing chute 4 is 3 ° and 46.5 °.

On the other hand, the control unit 400 is the first and second electronic level (210, 220), the actual value of the shaft 7 detected by the load shell 230, and the turning chute (4) And a measurement value indicator 410 to which the actual value of the rotational operation and the value of the load of the tilting gear box 3 are transmitted, and a computer 420 for instructing operation of the transmitted data. The controller 430 is configured to control the rotational driving of the turning motor 10 and the tilting motor 11 under the instruction of 420.

The operation and effects of the present invention having the configuration as described above will be described.

First, the drive unit 2 installed on the base 120 is fixed, and the turning chute 4 is rotated 360 ° by the turning motor 10, and 3 ° to 46.5 ° by the tilting motor 11. In the assembled state so as to be able to tilt, the swing chute 4 has a weight that varies depending on the type of raw material charged into the blast furnace 1, so that the test weight 310 can be converted to the corresponding weight. Mount (3) so that it does not fall down even when it is turned 3 °, ie vertically

Then, an additional weight 320 is installed in the mounting groove 311 of the test weight 310 so as to satisfy the load condition according to the weight of the ore charged into the swing chute 4 to change the load.

In this state, when the turning chute 4 receives the rotational force of the tilting motor 11 and rotates up and down, the turning chute 4 is driven by the second electronic level 220 installed in the turning chute 4. In fact, the pivot angle is measured, and the measured value is transmitted to the measurement watch 410 side.

In addition, in the first electronic level 210 fixed to the shaft 7 by the electronic level clamp 209, the tilting motor 4 is moved by receiving the power of the tilting motor 11 to move the shaft 7. ), When turning up and down, the expected angle of the turning chute 4 is detected and sent to the measured value indicator 410.

The system of the correlation flow is indicated by the second electronic level B 220 attached to the swing chute 4 and the second electronic level 220 attached to the shaft 7 of the tilting gear box 3. The measured angle value is sent to the measurement indicator 410, where the detected measurement value is converted into a signal and sent to the computer 420, and the computer 420 is based on the angle value of the turning chute 4. Instructing the operation value to the controller 430, the controller 430 operates the turning motor 10 and the tilting motor 11 to rotate the turning chute 4 360 ° and at the same time 3 to 46.5 Tilting is repeated according to the schedule for loading the raw materials into the blast furnace until °, and operated until the completion of one cycle.

When the operation of one cycle is completed, the swing chute 4 is charged at an angle required by the driver by correcting the angle instructed to the cab by the deviation value calculated for each angle so that the contents of the furnace 9 are loaded. The distribution of can be quantified.

Rotation angle detected by the first and second electronic levels and correction value unit (°) One 2 3 4 5 6 7 8 9 10 11 shaft 46.5 44.5 42.5 40.5 38.5 36.5 33.5 30.5 26.5 23.5 3 Turning suit 43.9 49.2 40.5 38.8 37.1 34.5 32.7 29.5 26.1 23.3 3 Correction value 2.6 2.3 2.0 1.7 1.4 1.1 0.8 0.5 0.4 0.2 0

In addition, the gear reducer base of the tilting gear box (3) and the fixed base of the unit box (2) to calculate the load value of the load load received by the tilting gear box (3) according to the angle of the swing chute (4). A total of four flat load cells 330 are installed in each of the two tilting gearboxes 3 between 2a, and the measured bias value is transmitted to the measured value indicator 410. Will be sent).

Continuously the bias value of the tilting gear box (3) is a uniform value is output to both load cells 330 when the swing chute is 3 °, but the swing chute (4) cantilever in the tilting gearbox (3) Since the turning angle is gradually increased to 46.5 ° because it is fixed, the maximum unloading load is applied and detected on both left and right sides of the tilting gear box 3 as shown in Table 2 below.

Unbalanced load detected by load shell (unit: ton) Angle (°) 0 5 10 15 20 25 30 35 40 45 Tilt Gear Box Right 0.4 0.6 0.9 1.3 1.7 2.5 3.0 3.5 4.2 4.7 Tilting Gear Box Left 0.4 0.6 0.9 1.3 1.7 2.6 3.3 3.7 4.4 4.9

In this case, the unbalanced load value detected in Table 2 may analyze the influence of the swing chute 4 on the gears and bearings of the tilting gearbox 3 while repeatedly swinging up and down repeatedly for production work.

In addition, it is possible to analyze the angular change of the turning chute 4 for each angle while the turning chute 4 in the drive unit 2 rotates 360 ° horizontally.

At this time, when the swing angle detected at the second electronic level 220 fixed to the swing chute 4 is changed, it is possible to grasp in advance that the bearings and the structure of the main gear 5 have changed. Trouble can be diagnosed in advance to prevent accidental production interruptions in critical facilities.

According to the present invention having the above-described configuration, various data that cannot be measured in the blast furnace body, which is a melting facility, are given the same conditions as the actual production process, and the change value of the deflection amount of the turning chute is changed according to the type of charges introduced during operation. The angular values detected in the cab and the tilting gearbox and the swing chute are compared and analyzed, and each value that is changed is applied to the angle adjuster in the blast furnace to maintain the actual angle of the swing chute. It is possible to uniformly and quantify the charging of the furnace, and the unbalanced load value shown in the load cell installed in the tilting gearbox has the effect on each component constituting the tilting gearbox according to the turning chute angle. A diagnostic effect is obtained in advance.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (1)

The cylindrical base 120 having the inspection window 121, the drive unit 2 installed on the upper surface of the base 120, the main swing gear 12 rotated by the swing motor 10, and the tilting A tilting gear box 3 having a tilting main gear 13 tilted by a motor 11 and a tilting arm 16 connected to the tilting main gear 13 via a tilting reduction gear 14. A main body part 100 having a turning suit 4 mounted on the shaft 7 of the tilting arm 16; A first electronic level 210 for detecting the rotational angle of the shaft 7, a load cell 230 for measuring the load of the tilting gear box 3, and an actual turning of the swing chute 4. A detector 200 having a second electronic level 220 for detecting an angle; A test load section in which a test weight 310 is mounted on the swing chute 4 so as to give a load of load, and a mounting groove 311 in which the additional weight 320 is mounted on the test weight 310 is formed. 300 and A measurement value indicator 410 which transmits the values detected by the first and second electronic levels 210 and 220 and the load shell 230, a computer 420 for analyzing data and instructing operation thereof; Charge angle and unloading load inspection of the blast furnace swing chute characterized in that it comprises a control unit 400 having a controller 430 for driving the turning, tilting motor 10, 11 under the direction of 420 Device.