JPH04106390A - Eccentric rotation correcting method of trough in circular type sintering ore cooling machine - Google Patents

Abstract

PURPOSE:To correct the eccentric rotation of a trough on line at all times by a method wherein the rotating condition of the trough is detected by a displacement sensor to regulate a pinching angle with respect to friction plates of a pair of friction rollers, which push the outer periphery of a rotating frame or the friction plates. CONSTITUTION:A displacement sensor 30 is arranged so as to be positioned near a side roller 16 inside of a side rail 15 fixed to the inside of an inside rotating frame 1 while a distance between the side rail 15 and the displacement sensor 30 is measured. Supersonic waves, microwaves, laser beams and the like can be utilized as the displacement sensor 30, however, an eddycurrent displacement meter, for example, is employed for the displacement sensor 30. When the measured distance is fluctuated largely in this case, it indicates that the eccentricity of a trough is large. The distance, detected by the displacement sensor 30. is transmitted to and inputted into a computer 37 as an electric signal through a converter 36. The computer 37 decides the magnitude of the electric signal of the detected distance while comparing the electric signal with a preset allowable reference value 10mm. When the detected distance exceeds the reference value 10mm, the computer 37 outputs the operating command of a geared motor 35 to a controller 38 to correct the eccentric rotation of the trough.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for correcting trough eccentric rotation of a circular sintered ore cooler.

<Prior art> In general, in a circular type sintered ore cooler (hereinafter referred to as a cooler), a plurality of troughs connected by an annular rotating frame run on annular rails via wheels. The red-hot sintered ore in the trough is cooled by air blown by a blower installed below the trough or suctioned by an exhaust fan installed above, and the trough is tilted and sintered in the ore discharge section of the cooler. It is designed to discharge ore.

FIG. 2 is a plan view showing a conventional example of a circular cooler, in which a large number of troughs 2 arranged in an annular manner are attached to a pair of inner and outer rotating frames 1 (1a, 1b), and the outer circumference of the outer rotating frame 1a is It is rotated in the direction of the arrow by a friction plate 3 provided at. This rotation is caused by the motor 17 driving a pair of friction rollers 4 that sandwich and press the friction plate 3 from above and below. In the drawing, the pair of friction rollers 4 is the friction plate 3.
Two pieces are provided at asymmetric positions on the circumference. The trough 2 has a structure in which adjacent parts overlap each other to prevent sintered ore from leaking and falling. 0 In the figure, 5 is an ore feeding chute, and 6 is an ore discharge ho, ba, which is blown from below by a blower (not shown). Cooled by air. Note that an exhaust fan may be installed above.

Next, Fig. 3, Fig. 4 (B-B arrow view of No. 31), and Fig. 5 (C-C arrow view of Fig. 3) respectively show enlarged portions of this cooler. The trough 2 is held by a trough support shaft 7 and a wheel axle 8, both ends of which are fixed to the rotating frame 1. Wheels 9 are fixed to both ends of the wheel axle 8, and the wheel axle 8 supports the trough 2 via a pair of bracket eyes 1 provided at the bottom of the trough 2. Further, a trough support shaft 7 whose both ends are fixed to the fixed frame 1 supports the trough 2 via a bracket 12 provided at the center of the lower part of the trough 2.

As shown in FIG. 6, the annular rail 10 on which both axles 9 rest is curved downward at the ore discharge section, so that the trough 2, which is driven via the trough support shaft 7 as the rotating frame l rotates, is discharged. When entering the ore area, the wheels 9 descend along the rails 10 and tilt around the support shaft 7 to release the sintered ore 39 in the trough 2.
is discharged to the ore discharge pump 6.

Reference numeral 13 in FIGS. 4 and 5 is an air seal plate that slides in contact with the lower end of the tool 1' (path shown) disposed on the cooler;
Reference numeral 4 denotes a ventilation plate provided with a large number of slits or pores (channels shown in the figure), which do not allow air to pass from the bottom of the trough 2 into the sintered ore 39, so that a circular type sintered ore cooler is constructed. be done.

Figures 7, 8, 9 and 1O respectively illustrate the normal operation of the cooling machine, the eccentric running of the trough, and the derailed state of the trough wheels in the ore discharge section W, as described in Figure 5 above. As shown, each trough 2 travels on the rail 10. The rail IO is supported by the wheel axle 8 of the wheel 9 and the trough support shaft 7 fixed to the rotation frame 1, and passes through a horizontal portion and a curved downward ore discharge portion.

At this time, as shown in FIG. 7, during normal operation, there is a certain distance ii! between the ribs 9a of the left and right wheels 9 and the head side surface 10a of the rail 10! Trough 2 runs while maintaining Ib. In the horizontal rail portion, sintered ore is placed on a ventilation plate 14 fitted into the bottom of the trough 2 and cooled. In addition, in the ore discharge section, the wheels 9 descend along the curved rails 10, so the trough 2 tilts around the trough support shaft 7 as shown in FIG. Concretion is discharged.

However, as shown in FIGS. 8 and 9, trough 2
When eccentric running of the trough 2 occurs due to thermal deformation of the load, deviation of the load, unbalanced rotation, etc., as shown in FIG. The distance from the side surface 10a is not equal on the left and right, so that one wheel collar 9a and the rail head side surface 10a always come into contact with each other to the left or right. Further, a similar phenomenon occurs in the ore discharge section, and when the deviation due to eccentric running of the trough 2 becomes large, an abnormality occurs in which the wheel collar 9a rides on the head of the rail 10, as shown in FIG. 9.

When the above abnormality occurs, the side surface 1 of the head of the rail 10
The wheel flange 9a is pressed against the rail 10 and the wheel 9, causing abnormal wear on the rail 10 and the wheel 9, which shortens the life of the rail 10 and the wheel 9.

Furthermore, an excessive thrust force acts on the rolling bearing of the wheel, which also accelerates wear of the rolling bearing 8 of the wheel and shortens the life of the bearing.

In addition, in the ore dumping section, when the trough 2 tilts and travels with the wheel collar 9a riding on the head of the rail 10 as shown in Figure 1O, the wheel 9 derails from the rail 10 and the trough 2 became unable to run, and the cooling machine was forced to stop operating.

Therefore, when the trough eccentric running occurs, conventionally the first
As shown in the figure, a plurality of side rollers 16 arranged at appropriate intervals are brought into contact with and guided by a side rail 15 forming the inner periphery of the rotating frame 1 by bolting or the like on the inside of the side rail 15. However, after removing the cylinders, etc., the cylinder 16 is forcibly moved by hand in the radial direction from the center of the cooler, so that it can be arranged in a ring on the rotating frame 1. A method was used to correct the eccentric running of the trough 2.

<Invention tries to solve! ! l! a> However, the method described above has the disadvantage that there is no method for quantitatively measuring the amount of eccentricity of the trough rotation, and the amount of movement of the side rollers 16 cannot be determined.

Therefore, the work of moving the side rollers 16 depends on the empirical intuition of the operator, and even if the side rollers 16 are moved based on empirical intuition, it is difficult to correct the eccentric rotation of the trough 2 in a short time. Ta.

For this reason, the side rollers 16 are moved manually,
The work to correct the eccentric rotation of the trough can take anywhere from several hours to more than 10 hours, as it is a repetitive task of observing the eccentric rotation of the trough after correction, and if there is a problem, correcting it again and checking the situation. was there. The labor and time required for this work are enormous, and the trough 2 can be done quickly and accurately.
The disadvantage was that it was not possible to correct eccentric rotation.

An object of the present invention is to provide a method for correcting eccentric rotation of a trough in a circular type sintered ore cooler, which can eliminate the drawbacks of the prior art described above.

<Means for Solving the Problems> The present invention provides a trough shaft 7 fixedly installed between an inner rotating frame 1b and an outer rotating frame 1a that rotate integrally, and wheels 9 that run on an annular rail 10. In a method for correcting eccentric rotation of a trough in a circular type sintered ore cooler, which is rotatably supported by a wheel shaft 8 fixedly attached to the inner rotating frame 1b and is provided with a large number of troughs arranged in an annular manner, the inner rotating frame 1b The amount of displacement of the inner peripheral surface of the side rail 15 disposed inside the side rail 15 and/or the outer peripheral surface of the friction plate 3 disposed outside the outer rotating frame 19 is calculated as follows:
Alternatively, it is detected by a plurality of displacement sensors 30 disposed at asymmetrical positions outside the friction plate, the center point of the rotating frame is determined from the amount of displacement, and the center of the cooler is determined from the arrangement position of the plurality of displacement sensors. The amount of deviation between the point and the center point of the rotating frame is determined, the amount of deviation is compared with a reference value, and based on the results, a pair of friction rollers 4 that sandwich the FRIXILON plate 3 from above and below at multiple locations are determined. The eccentric rotation of the trough 2 is corrected by rotating the pedestal 27 mounted with the drive motor 17 for rotating the trough and the reducer 18 in a horizontal plane and adjusting the angle of the friction roller 4 with respect to the friction plate 3. This is a method for correcting eccentric rotation of a trough in a circular type sintered ore cooler.

For Kusaku The specific structure and operation of the present invention will be explained based on the drawings.

First, among the two rows of inner and outer rotating frames 1 arranged concentrically in FIGS. 1(a) and (b), the flexible plate 3 fixed to the outer periphery of the outer rotating frame 1a is sandwiched from above and below. A pair of pressing friction rollers 4a and 4b are provided, and the trough 2 is moved by rotation thereof.

Among the pair of friction rollers 4a and 4b, the upper friction roller 4a is supported by a bearing 21a, and is connected to the output shaft of a reducer 18 installed on a pedestal 27 via a roller bearing 20a and a coupling 19. The input shaft of the reducer 18 is connected to the drive motor 17 on the pedestal 27 to transmit driving force.

Further, the lower friction roller 4b is supported by a bearing 21b, and is suspended from the lower part of the pedestal 27 by a hinge 26 and a roller bearing 20b.

Further, the friction rollers 4a and 4b sandwich the friction plate 3 from above and below, and at this time, the friction rollers 4a and 4b
The pressing force b is the bearing 21 of the friction roller 4b.
The adjustment is made by passing the connecting bolt 24 connected to the roller b through a connecting fitting 22 fixed to the bearing 21a of the friction roller 4a, attaching a spring 23 to the connecting bolt 24, and tightening a pad 25 from above.

Furthermore, as mentioned above, the drive motor 17 and the reducer I8 are connected to the frame 2.
A support frame 31 attached to the lower part of the pedestal 27 and a swing gear 32 are fastened and fixed with bolts, etc., and this swing gear 32 is connected to a support frame 33 fixed on the pedestal 28 and a bearing. (not shown), the pedestal 27 and the pedestal 28 are connected.

Further, the pedestal 28 is installed on the foundation by a hinge 29, and the entire pedestal 28 and the entire pedestal 27 connected to the pedestal 28 swing up and down about the hinge 29. Further, by rotating the geared mork 35 via the pinion gear 34 connected to the geared mork 35 installed on the pedestal 28, the swing gear 32 is rotated.
The rotation of the swing gear 32 is transmitted to the pedestal 27 via the support frame 31, so that the entire pedestal 27 is configured to pivot in a horizontal direction with respect to the pedestal 2.

As a result, the friction rollers 4a and 4b, which are connected to the drive motor 17 and reducer 18 installed on the pedestal 27 via the coupling 19, roller bearings 20a and 20b, etc., rotate together with the pedestal 27. ,
The friction rollers 4a, 4b are configured to be able to change the sandwiching angle with respect to the friction plate 3.

With the above configuration, by operating the geared motor 35, the rotation gear 3 is
3 to rotate the rotation gear 32. The rotation of the swing gear 32 causes the pedestal 27 to swing via the support frame 31 that supports the swing gear 32.

When the entire pedestal 27 rotates, the drive motor 17 and reducer 18 installed on the upper part of the pedestal 27 rotate together with the pedestal 27, and friction is connected to the reducer 18 via the coupling 19 and the roller bearing 20a. Roller 4a
The FRIXILON roller 4b is connected to the lower part of the pedestal 27 via the hinge 26 and the roller shaft 20b.
Since the friction rollers 4a and 4b rotate in the same direction and at the same angle as the rotation operation of the friction rollers 4a and 4b, the angle between the friction rollers 4a and 4b with respect to the frixigin plate 3 can be changed.

Next, the specific configuration of the displacement sensor 30 will be explained based on FIG. 1. In Figure 1, a displacement sensor 30 is installed inside the inner rotating frame.
Although a description will be given of a case in which the side rollers 16 are arranged, similar effects can be obtained by placing them outside the outer rotating frame. In Fig. 1, first, the inner side arranged concentrically,
For example, an eddy current displacement meter is disposed as a displacement sensor 30 close to the inside of a side rail 15 attached to the inner peripheral surface of the inner rotating frame 1 by bolt fastening or the like among the two outer rows of rotating frames 1 .

The number of eddy current displacement meters of this displacement sensor 30 is, for example, nine in the vicinity of the side rollers 16a to 16i, which are arranged at equal intervals in the circumferential direction, as shown in FIG. Place. As the displacement sensor 30, appropriate means such as the above-mentioned eddy current displacement meter, ultrasonic, microwave, or laser beam type can be used.

36 is a converter for converting the detection distance between each eddy current displacement meter 30 and the side rail 15 into an electric signal; 37 is a converter for converting the detection distance between each eddy current displacement meter 30 and the side rail 15 into an electric signal; Calculator for calculating turning amount, 38
is a control device that electrically operates the geared motors 35 based on movement signals for each geared motor 35 transmitted from the computer 37.

Next, a correction control system for eccentric rotation of the trough 2 supported between the outer and inner rotating frames 1 that rotate integrally will be described.

A pair of friction rollers 4a and 4b, which sandwich and press the friction plate 3 fixed to the outer periphery of the outer rotating frame 1 from above and below, are disposed in the cooler, for example, as shown by reference numeral 4 in FIG. Due to its rotation, trough 2
The sintered ore is cooled by moving the sintered ore.

FIGS. 1(a) and 1(b) show the configuration of an apparatus used in the method according to the present invention, and the details of the following numbers will be explained together with the operation.

In FIGS. 1(a) and 1(b), the inside of the side rail I5 is attached to the inner peripheral surface of the inner rotating frame 1 by bolts or the like among the two concentrically arranged inner and outer rotating frames 1. A displacement sensor 30 is disposed close to one side.

As the displacement sensor 30, appropriate means such as the above-mentioned eddy current displacement type, ultrasonic, microwave, or laser beam type can be used.

36 is a converter for converting the detection distance between each vortex xi displacement meter 30 and the side rail 15 into an electric signal; 37 is a converter for converting the detection distance between each vortex xi displacement meter 30 and the side rail 15 into an electric signal; A total machine 38 that calculates the distance to the side rail 15 is a control device that electrically operates the geared motor 35 based on a distance signal transmitted from the computer 37.

The distance between the displacement sensor 3o and the inner peripheral surface of the side rail 15 is measured by the displacement sensor 30, and the difference between the maximum and minimum detected distances is converted into an electrical signal by the converter 36 and transmitted to the computer 37. . In calculation@31, the amount of eccentricity of the trough 2 is calculated based on the electrical signal transmitted from the converter 36.

Here, if the detected eccentricity is smaller than the preset allowable standard value of the eccentricity of the trough 2, for example 10 holes, no action will be taken; however, if the detected eccentricity is larger than the allowable standard value of 10m, From the calculation 1137, an operation command for the geared motor 35 is output to the control device 38.

Upon receiving the operation command, the control device 38 slightly operates the geared motor 35 to correct the eccentric rotation of the trough 2 while finely adjusting the sandwiching angle of the friction plate 3 between the friction rollers 4a and 4b. When making this fine adjustment, the displacement sensor 30 simultaneously detects the amount of eccentricity of the trough 2 and confirms that it is less than the allowable standard value of 10 degrees. If it is still large, continue to make fine adjustments to correct the eccentric rotation. Configure to make adjustments.

According to the inventors' past analysis of the trough eccentric rotation state of the cooler based on various measurement data,
In the arrangement situation of the side rollers 16 as shown in FIG.
The side rollers 16a, 16f are installed and fixed at the same distance from the center O1 at the positions of the side rollers 16a, 16f, and the distance 1 between the side surfaces of the side rollers 16a, 16f and the side surface of the side rail 15 forming the inside of the inner rotating frame 1b is set. -1lt was measured, and the eccentric rotation state of trough 2 was measured. As shown in FIG. 12, the distance 1-1lt fluctuated by a maximum of 30 degrees. Since the measurement example shown in FIG. 12 is a measurement value for one revolution of the trough 2, if the distance f-1fr is changed over several more revolutions, the distance f-1fr will fluctuate in a sine waveform.

Let us now consider the cause of eccentric rotation in trough 2.

This is a mechanism in which the two drive motors 17a and 17b shown in FIG. 2 transmit rotational force to the rotating frame I via the friction roller 4 to cause the trough 2 connected to the rotating frame 1 to travel. The drive motors 17a, 1.7b are arranged in asymmetrical positions as shown in FIG.

When sintered ore is loaded onto the trough 2 below the ore feeding chute 5, a large running resistance force is generated in the trough 2. 17b two friction rollers 4
The resultant force of the rotational force through the rotational force cancels each other out, and the trough 2 circumferentially surrounded by the rotating frame 1 rotates without eccentric rotation.

However, the amount of sinter loaded onto the trough 2 from the ore feed chute 5 or the loading position in the width direction on the trough 2 is constantly changing, and this occurs when loading the sinter onto the trough 2. While the running resistance of the trough 2 constantly changes, the two drive motors 1 disposed at the asymmetrical positions
Rotating frame 1 via friction rollers 4 of 7a and 17b
The resultant force of the rotational force on the rotating frame I hardly changes, and the resultant force and the running resistance force do not sufficiently cancel each other out, so that the rotating frame I
Since an eccentric force that forcibly moves the entire frame in a certain direction is generated, the eccentric force that moves the rotating frame 1 causes the trough 2 circumferentially attached to the rotating frame 1 to eccentrically rotate.

Here, in order to prevent the eccentric force from occurring, the running resistance force and the upper composite force must always cancel each other out, and the magnitude and direction of the composite force must be the same as the running resistance force so that the eccentric force is O. All you have to do is adjust the size and the opposite direction.

Specifically, when transmitting the rotational force of the drive motors 17a, 17b disposed at the above-mentioned asymmetrical positions to the rotating frame 1 via the friction roller 4, the drive motors 17a, 17.
It is only necessary to change the direction of the rotational force of either one of b.
That is, in FIGS. 1(a) and 1(b), the geared motor 35 is operated to rotate the swing gear 32 via the pinion gear 34, and the rotation of the swing gear 32 is transmitted to the pedestal 27 via the support frame 31. By rotating the drive motor 17, reducer 18, and friction rollers 4a, 4b in the horizontal direction and changing the sandwiching angle of the friction rollers 4a, 4b with respect to the friction plate 3, the rotational force of either one of the drive motors 17a, 17b can be reduced. You can change direction.

At this time, in order to confirm that the running resistance force and the resultant force are well balanced and cancel each other out, the first step is to confirm that the running resistance force and the resultant force cannot actually be measured.
The distance between the displacement sensor 30 and the side rail 15 is transmitted to the computer 37 by the displacement sensor 30 shown in FIG. The amount of deviation between the center point of the cooler and the center point of the rotating frame calculated by the calculator 37 based on the detected distance is compared with a reference value.

<Example> Next, an example of the present invention will be described using FIGS. 1(a) and 1(b).

A displacement sensor 30 is disposed inside a side rail 15 fixed to the inside of the inner rotating frame 1 and near a side roller 16, and the distance between the side rail 15 and the displacement sensor 30 is measured. The displacement sensor 30 may be an ultrasonic wave, a microwave, a laser beam, or the like, but in this embodiment, an eddy current displacement meter is used. At this time, if the measured distance varies greatly, this indicates that the eccentricity of the trough is large. The distance detected by the displacement sensor 30 is transmitted and input to the computer 37 as an electrical signal via the converter 36.

The calculator 37 compares and calculates the electrical signal of the detected distance with a preset allowable reference value of 10 rin to determine the magnitude.

If the detected distance exceeds the reference value 10, the computer 37 outputs an operation command for the geared monitor 35 to the control device 38.

Hereinafter, the functions described above are performed to correct the eccentric rotation of the trough.

FIG. 13 shows the distances detected by the displacement sensors 30 provided at positions 16a and 16f in FIG. 11! Fig. 3 shows changes over time in each stage before, during, and after adjustment according to the present invention.

At the stage before adjustment, there is a large variation in distance 2, and during the stage of adjustment of the present invention, due to the control operation, there is a fluctuation in -hour distance #l, but it is gradually balanced and the distance l after adjustment becomes almost equal. It can be seen that the trough of the cooler now moves stably.

<Effects of the Invention> As explained above, according to the present invention, in a circular type sintered ore cooler, the rotational state of the trough is detected from a plurality of displacement sensors, and the friction plate forming the outer periphery of the rotating frame is By adjusting the pinching angle of the pair of friction rollers that pinch and press against the Frixilan plate, the running resistance of the trough and the rotational force applied to the rotating frame via the friction rollers of the drive motor disposed at asymmetrical positions can be reduced. By balancing the resultant force, eccentric rotation of the trough can be corrected online at all times.

For this reason, a drawback of the prior art is that a plurality of side rollers arranged inside the side rail are brought into contact with the side rail forming the inside of the rotating frame of the trough, and the side rollers are cooled.
This eliminates the labor and time required to manually move the side rollers from the center of the machine in the radial direction, which can last anywhere from several hours to more than 10 hours, and eliminates inaccurate work based on the operator's intuition and experience. It is possible to eliminate the need to perform work to suppress the eccentric rotation of the trough, and the eccentric rotation of the trough can be quickly and reliably suppressed.

[Brief explanation of drawings]

FIG. 1(a) is a plan view showing an embodiment of the present invention;
g)) is a sectional view taken along arrow A-A in Fig. 1(a);
The figure is a plan view showing the entire general circular type sintered ore cooler, FIG. 3 is a partially enlarged plan view of FIG. 2, FIG. 5 is a sectional view taken along the line C-C in FIG. 3, FIG. 6 is an explanatory diagram showing the trough tilted ore discharge state in the ore discharge section, FIG. 7 is an explanatory diagram showing the trough normal running state, and FIG. Figure 8 is an explanatory diagram showing the trough eccentric running state, Figure 9 is an explanatory diagram showing the state where the trough runs on the rail due to the trough eccentric running, Figure 10 is an explanatory diagram showing the state where the trough has derailed from the rail, and Figure 11 is an explanatory diagram showing the state where the trough has derailed from the rail. An explanatory diagram showing the arrangement position of the displacement sensor, FIG. 12 is a graph showing the change over time in the detection distance by the displacement sensor, and FIG. 13 is a graph showing the change over time in the detection distance l. 1...Rotating frame, 2...Trough, 3...
・Friction plate, 4...Friction roller, 5...Ore feeding chute, 6...Ore discharge hopper, 7
... Trough support shaft, 8 ... Wheel axle, 9 ... Wheel, 10 ... Rail, 11 ... Frakent, 12 ... Fracket, 13 ... Air seal plate, 14 ... Ventilation Plate, 15...Side rail, 16...Side roller, 17...Drive motor, ]8...Reducer, 19...Coupling, 20...Roller shaft, 21...Shaft Receiving,
22...Connection fittings, 23...Springs,
24...Connecting bolt, 25...Nand, 2
6... Hinge, 27... Frame, 28.
... Frame, 29... Hinge, 30...
・Displacement sensor, 31... Support frame, 32...
・Swivel gear, 33...Support frame, 34...
Pinion gear, 35...Geared moke, 37...Calculator, 39...Sintered ore. 36...Converter, 38...Control device, Fig. 11 (σ) (b) Fig. 10 Fig. 12a Detection distance time (minutes) of 16a 13 Figure 1←--1a Detection distance at position 16a

Claims (1)

[Claims] An inner rotating frame (1b) and an outer rotating frame (1b) that rotate integrally.
a) and a wheel shaft (8) fixed to a wheel (9) running on an annular rail (10). , and a method for correcting eccentric rotation of a trough in a circular type sintered ore cooler equipped with a large number of troughs arranged in an annular manner, the side rail (
15) and/or the outer circumferential surface of the friction plate (3) disposed on the outside of the outer rotating frame (19), the amount of displacement is asymmetrical inward of the side rail and/or outward of the friction plate. The center point of the rotating frame is determined from the amount of displacement detected by a plurality of displacement sensors (30) arranged at different positions, and the center point of the rotating frame determined from the position of the plurality of displacement sensors is determined. The amount of deviation from the center point is determined, the amount of deviation is compared with a reference value, and based on the results, each friction plate (3) is connected to a pair of friction rollers (4) that sandwich the friction plate (3) from above and below at multiple locations. Drive motor (17) and reducer (18) for rotating the trough
The pedestal (27) carrying the is rotated in a horizontal plane,
The trough (2) is adjusted by adjusting the angle between the friction roller (4) and the friction plate (3).
) A method for correcting eccentric rotation of a trough in a circular type sintered ore cooler.