JP2021094530A - Monitoring system and monitoring method for roller tire for vertical mill - Google Patents

Abstract

To provide a monitoring system and a monitoring method for roller tire for vertical mill by which life prediction with good accuracy and abnormality detection for a spare component of a roller tire for a vertical mill can be performed, and stable continuous operation thereof can be realized.SOLUTION: A monitoring system 50 for roller tire for vertical mill comprises: a tachometer 51 which detects the number of revolutions of a roller tire 17 for vertical mill; a vibration meter 52 which detects vibration of the roller tire 17 for vertical mill; a layer thickness meter 54 which measures a raw material layer thickness of a pulverization material between the roller tire 17 for vertical mill and a rotary table 14; a roller tire life prediction part 60 which predicts life of the roller tire 17 for vertical mill on the basis of measurement values of the tachometer 51 and the layer thickness meter 54 during pulverizing operation; and a bearing abnormality detection part 70 which detects roller bearing abnormality of the roller tire 17 for vertical mill on the basis of measurement values of the tachometer 51 and the vibration meter 52 during inertial rotation in which the roller tire 17 for vertical mill during pulverizing operation is lifted from the rotary table 14.SELECTED DRAWING: Figure 1

Description

The present invention is mainly a vertical mold in which coal, oil coke, limestone, slag, clinker, cement raw material, other inorganic raw materials, or organic raw materials such as chemicals and biomass are driven on a rotary table to be pulverized into powder. The present invention relates to a monitoring system and a monitoring method for roller tires for a crusher.

Vertical crushers are widely used as crushers for crushing raw materials such as blast furnace slag, cement, coal, and biomass. The conventional vertical crusher is provided with a rotary table and a plurality of crushing rollers arranged at positions that equally divide the outer peripheral portion of the upper surface of the rotary table in the circumferential direction in the casing forming the outer shell of the crusher. ..
In such a vertical crusher, when the crushing raw material is supplied to the center of the rotary table, the crushing raw material moves to the outer peripheral portion of the rotary table due to the rotation of the rotary table. Since the crushing roller is pressed and rotated on the outer peripheral portion, the crushing raw material penetrates between the crushing roller and the rotary table and is crushed. Then, the hot air blown up from the annular passage between the outer peripheral surface of the rotary table and the inner peripheral surface of the casing causes the powder or granular material to rise in the casing while being dried together with the hot air. The powder or granular material is sorted by the classification means provided in the upper part of the casing, and the product having a predetermined particle size is discharged to the outside. The coarse powder that cannot pass through the classification means falls on the rotary table again and is crushed.

For a vertical crusher, the most important thing to fulfill the function of crushing is to maintain the shape of the crushing part (especially the roller tire) according to the predetermined structure, but when crushing is performed. As time passes, wear progresses and the shape changes. For this reason, a structure is adopted in which the roller tire, which is a replacement part for the crushing roller, can be replaced when a certain amount of wear progresses (Patent Document 1).
Controlling the amount of wear of roller tires is considered to be an important control value for stable operation, but the measurement method can only be performed offline when the vertical crusher is stopped, and at that time, the measuring instrument is used. Since it is used and performed in an environment with poor work efficiency, there is a problem in ensuring measurement accuracy, and the work is extremely inefficient.
In addition, the wear amount can be measured only at the time of regular suspension, for example, once every six months, and the progress cannot be confirmed, so that the wear life can only be estimated with an extremely small amount of information. In other words, the amount of wear after half a year was predicted based on the information once every six months.
For this reason, if the life is shorter than expected, there is a risk that the operation will be stopped or unplanned maintenance work will be performed due to unexpected roller tire replacement.
On the other hand, in order to avoid this risk, even though the life of the roller tire is still sufficient, there is a waste of replacement.
As described above, although it has been known that wear control has an important role in the past, it has been difficult to perform fine control due to the difficulty of the measurement method.

Jikkenhei 4-106632A Gazette

The problem to be solved by the present invention is, in view of the above-mentioned problems of the prior art, a vertical crusher capable of accurately predicting the life of replacement parts for roller tires for a vertical crusher, detecting abnormalities, and realizing stable continuous operation. The purpose of the present invention is to provide a monitoring system and a monitoring method for roller tires.

The present invention provides a tachometer for detecting the rotation speed of a roller tire for a vertical crusher as a first means for solving the above problems.
A vibrometer that detects the vibration of the roller tire for the vertical crusher, and
A layer thickness gauge for measuring the raw material layer thickness of the crushing raw material between the roller tire for the vertical crusher and the rotary table, and
A roller tire life prediction unit that predicts the life of the roller tire for the vertical crusher based on the measured values of the tachometer and the layer thickness meter during the crushing operation.
Roller bearings of the roller tires for the vertical crusher based on the measured values of the tachometer and the vibration meter during the coasting rotation in which the roller tires for the vertical crusher during the crushing operation are raised from the rotary table. Bearing abnormality detection unit that detects abnormalities in
It is an object of the present invention to provide a monitoring system for roller tires for a vertical crusher, which is characterized by being equipped with the above.
According to the first means, it is possible to accurately predict the life of the roller tire and detect the abnormality of the roller bearing during the operation of the crusher. In addition, it is possible to predict the life of roller tires for each roller tire and detect abnormalities in roller bearings. Therefore, unexpected troubles can be prevented, non-production time can be reduced, and stable continuous operation becomes possible.

According to the present invention, as a second means for solving the above problems, in the first means, the roller tire life prediction unit rotates the roller tire for a vertical crusher at the time of initial setting and when a predetermined time elapses. The life of the roller tire for the vertical crusher from the intersection of the straight line connected by plotting the number and the life set value, and the intersection of the straight line connected by plotting the layer thickness value at the time of initial setting and the elapse of a predetermined time and the life set value. It is an object of the present invention to provide a monitoring system for roller tires for a vertical crusher, which is characterized by making predictions.
According to the second means, accurate roller tire life prediction can be realized from the measured values of the number of revolutions and the layer thickness during operation.

According to the present invention, as a third means for solving the above-mentioned problems, in the first or second means, the bearing abnormality detection unit exceeds the roller inertial rotation speed and the vibration value which are set in advance. It is an object of the present invention to provide a roller tire monitoring system for a vertical crusher, which is characterized by detecting an abnormality of the roller bearing.
According to the third means, it is possible to detect an abnormality of the roller bearing with high accuracy from the rotation speed and the vibration value during the inertial rotation.

According to the present invention, as a fourth means for solving the above problem, in any one of the first to third means, the tachometer is used.
A rotation detection ring that forms a continuous uneven portion on the outer circumference, makes the axis coaxial with the axis of the roller tire for the vertical crusher, and rotates integrally with the roller tire for the vertical crusher.
A monitoring system for a roller tire for a vertical crusher, which is provided near the trajectory of the rotation detection ring and has a non-contact sensor for detecting a pulse signal to obtain the rotation speed of the roller tire for the vertical crusher. To provide.
According to the fourth means, the roller rotation speed (referred to as the rotation speed of the roller tire, the same applies hereinafter) can be measured with high accuracy. Moreover, even if the roller bearing deteriorates abnormally, the rotation speed can be obtained. The change in rotation speed and rotation angle can be obtained by detecting the pulse signal. It is also possible to know the bearing abnormality inside the roller and the lubrication status.

The present invention provides, as a fifth means for solving the above problems, a step of detecting the rotation speed of a roller tire for a vertical crusher and a step of detecting the rotation speed.
The process of detecting the vibration of the roller tire for the vertical crusher and
The step of measuring the raw material layer thickness of the crushing raw material between the roller tire for the vertical crusher and the rotary table, and
A step of predicting the life of the roller tire for the vertical crusher based on the measured values of the rotation speed and the raw material layer thickness during the crushing operation, and
Based on the measured values of the rotation speed and the vibration during inertial rotation in which the roller tire for the vertical crusher during the crushing operation is raised from the rotary table, the roller bearing of the roller tire for the vertical crusher The process of detecting anomalies and
It is an object of the present invention to provide a method for monitoring a roller tire for a vertical crusher, which is characterized by having the above.
According to the fifth means, it is possible to accurately predict the life of the roller tire and detect the abnormality of the roller bearing during the operation of the crusher. In addition, it is possible to predict the life of roller tires for each roller tire and detect abnormalities in roller bearings. Therefore, unexpected troubles can be prevented, non-production time can be reduced, and stable continuous operation becomes possible.

In the present invention, as a sixth means for solving the above problems, in the fifth means, the step of predicting the life of the roller tire for the vertical crusher is the initial setting of the roller tire for the vertical crusher. From the intersection of the straight line connected by plotting the number of rotations at the time and the elapsed time and the intersection of the life set value, and the intersection of the straight line connected by plotting the layer thickness value at the initial setting and the elapsed time, and the life set value, the vertical It is an object of the present invention to provide a method for monitoring a roller tire for a vertical crusher, which comprises predicting the life of a roller tire for a mold crusher.
According to the sixth means, accurate roller tire life prediction can be realized from the measured values of the number of revolutions and the layer thickness during operation.

In the present invention, as a seventh means for solving the above-mentioned problems, in the fifth or sixth means, in the step of detecting the abnormality of the roller bearing, the roller inertial rotation speed and the vibration value are set in advance. It is an object of the present invention to provide a method for monitoring a roller tire for a vertical crusher, which comprises detecting an abnormality of the roller bearing when the value is exceeded.
According to the seventh means, it is possible to detect an abnormality of the roller bearing with high accuracy from the rotation speed and the vibration value during the inertial rotation.

According to the present invention, it is possible to accurately predict the life of a roller tire and detect an abnormality in a roller bearing while the crusher is in operation. In addition, it is possible to predict the life of roller tires for each roller tire and detect abnormalities in roller bearings. Therefore, unexpected troubles can be prevented, non-production time can be reduced, and stable continuous operation becomes possible.

It is a structural schematic diagram of the monitoring system of the roller tire for a vertical crusher of this invention. It is explanatory drawing of the tachometer. It is explanatory drawing of the bearing abnormality detection part. It is a graph of roller tire life prediction. It is a graph of roller bearing abnormality detection. It is explanatory drawing of the display part. It is explanatory drawing of the vertical type crusher.

An embodiment of the roller tire monitoring system for a vertical crusher and the method thereof of the present invention will be described in detail below with reference to the drawings.

[Vertical crusher 10]
FIG. 7 is a schematic configuration diagram of a vertical crusher. As shown in the figure, the vertical crusher 10 includes a casing 12, a rotary table 14, a plurality of crushing rollers 16 arranged at positions where the outer peripheral portion of the upper surface of the rotary table 14 is equally divided in the circumferential direction, and a rotary table 14. The main basic configuration is an annular passage 40 formed along the outer periphery of the rotary table 14, a classification means 30 provided on the upper portion of the casing 12, and a dam ring 48 mounted on the outer peripheral edge of the rotary table 14.
The crushing roller 16 is connected to the piston rod of the hydraulic cylinder 24 via an arm 20 rotatably attached to the lower casing 12B as a fulcrum. The crushing roller 16 is pressed against the rotary table upper surface 14A by the operation of the hydraulic cylinder 24, and rotates by being driven by the rotary table 14 via the crushing raw material.
A classification means 30 is provided above the upper surface 14A of the rotary table of the casing 12.

The classification means 30 includes a rotating shaft 30a, a rotating blade 30b, and a fixed blade 30c. The rotating shaft 30a hangs downward from the upper surface of the casing 12 and is rotatable by an external drive motor (not shown). A plurality of rotary blades 30b are formed in an annular shape on the lower portion of the rotary shaft 30a with the rotary shaft 30a as the axis. Further, a plurality of fixed blades 30c are formed side by side on the outer circumference of the rotary blades 30b. Both the rotary blades 30b and the fixed blades 30c are arranged in the longitudinal direction parallel to the axis of the rotary shaft 30a, and the hot air rising in the casing 12 is a gap between the blades parallel to the axis of the rotary shaft 30a. Supplied from. In the classification means 30 having such a configuration, the rotary blade 30b rotates together with the rotary shaft 30a, and only fine powder or granular material (fine powder) that has passed through the fixed blade 30c and the rotary blade 30b is discharged from the upper outlet 44.
An internal cone 30e and a feed pipe 30f are provided at the lower end of the fixed blade 30c. The inner cone 30e is formed in a funnel shape whose diameter decreases from the upper side to the lower side, and the feed pipe 30f is formed in a cylindrical shape connected to the lower end of the inner cone 30e. The structure is such that the body is captured and supplied to the upper surface 14A of the rotary table from the lower discharge port via the feed pipe 30f.
A raw material input chute 34 is connected to the internal cone 30e. The raw material is charged from the raw material input port 32 to the upper surface 14A of the rotary table via the raw material input chute 34.
The raw material charged from the raw material charging chute 34 moves to the outer peripheral portion of the rotary table upper surface 14A while drawing a spiral locus on the rotary table upper surface 14A, and is bitten between the rotary table upper surface 14A and the crushing roller 16 and crushed. To. Then, a part of the crushed powder or granular material gets over the dam ring 48 which is provided around the outer edge of the rotary table upper surface 14A and adjusts the layer thickness of the raw material, and the outer peripheral portion of the rotary table upper surface 14A and the casing 12 Head to the annular passage 40, which is a gap. Here, below the rotary table 14 of the lower casing 12B, a gas introduction port 42 for introducing hot air heated to a predetermined temperature is provided.

During the operation of the vertical crusher 10, by introducing hot air from the gas introduction port 42, the hot air flowing from below the rotary table 14 through the classification means 30 to the upper outlet 44 in the casing 12 There is an air flow.
The raw material put into the vertical crusher 10 and a part of the powder or granular material crushed by the rotary table 14 and the crushing roller 16 and overcoming the dam ring 48 described later are blown up by the hot air from the annular passage 40. It rises in the casing 12 and reaches the classification means 30.
Here, the powder or granular material having a large diameter and mass cannot pass through the fixed blades 30c and the rotary blades 30b of the classification means 30, falls into the inner cone 30e, is bitten by the crushing roller 16 again, and is crushed. To. On the other hand, the powder or granular material having a small diameter passes between the fixed blades 30c and the rotary blades 30b arranged with a gap, passes through the classification means 30, and is taken out of the casing 12 from the upper outlet 44.
Further, some of the raw materials having the maximum particle size, which are not bitten by the crushing roller 16 and reach the annular passage 40 as they are, fall from the annular passage 40 below the rotary table 14 and are vertically crushed from the lower outlet 46. It is taken out of the machine 10.

[Roller tire monitoring system 50 for vertical crusher]
FIG. 1 is a schematic configuration diagram of a roller tire monitoring system for a vertical crusher. As shown in the figure, the monitoring system 50 for the roller tire for the vertical crusher of the present invention is a rotator 51 that detects the number of rotations of the roller tire 17 for the vertical crusher (referring to the crushing roller 16 and the roller tire of the auxiliary roller). And a vibration meter 52 that detects the vibration of the roller tire 17 for the vertical crusher, and a layer thickness meter 54 that measures the raw material layer thickness of the crushing raw material between the roller tire 17 for the vertical crusher and the rotary table 14. The roller tire life prediction unit 60 that predicts the life of the roller tire 17 for the vertical crusher based on the measured values of the rotary meter 51 and the layer thickness meter 54 during the crushing operation, and the roller tire life prediction unit 60 during the crushing operation. Based on the measured values of the rotary meter 51 and the vibration meter 52 during inertial rotation in which the roller tire 17 for the vertical crusher is raised from the rotary table, the roller bearing of the roller tire 17 for the vertical crusher A bearing abnormality detecting unit 70 for detecting an abnormality is provided.

The tachometer 51 can measure the number of rotations of the roller tire. FIG. 2 is an explanatory diagram of the tachometer. As shown in the figure, the tachometer 51 of the present embodiment forms a continuous uneven portion on the outer circumference, makes the axis coaxial with the axis of the crushing roller 16, and rotates with a rotation detection ring 51a that rotates integrally with the roller. It has a non-contact sensor 51b provided at a non-rotating portion (casing or the like) near the trajectory of the detection ring 51a to detect a pulse signal and obtain the rotation speed of the roller. The tachometer 51 having such a configuration irradiates the uneven portion of the rotation detection ring 51a with a laser beam from the non-contact sensor 51b, converts the reflected light into a pulse signal, and obtains the rotation speed (rpm) of the roller. it can. In addition to this, a non-contact type sensor that detects magnetism and obtains a pulse signal may be used. At this time, since the uneven portion is provided on the entire outer circumference of the rotation detection ring 51a, the number of rotations per unit time can be obtained even when the roller bearing is worn and deteriorated so that one rotation cannot be performed. By detecting this pulse signal, the change in rotation speed and the rotation angle can be obtained. It is also possible to know the bearing abnormality inside the roller and the lubrication status.
The vibration meter 52 can be directly attached to the roller tire shaft of the roller tire to measure the vibration state of the roller tire shaft.
The layer thickness meter 54 has a striker (reflector) attached to the arm 20 and a laser sensor that irradiates the striker with laser light. The layer thickness meter 54 having such a configuration emits laser light to the striker when the striker attached to the arm 20 swings around the axis of the arm in conjunction with the vertical movement of the roller tire (change in the raw material layer thickness). The distance between the laser sensor and the striker is measured by the emitted reflected light, and the lever ratio (R2 (distance between the arm axis and the striker) / R1 (distance between the arm axis and the contact center between the roller tire and the rotary table). )), The raw material layer thickness can be detected. By installing the tachometer 51, the vibration meter 52, and the layer thickness meter 54 for each roller tire, the roller tire life can be predicted and the bearing abnormality can be detected individually.

The roller tire life prediction unit 60 is electrically connected to the tachometer 51 and the layer thickness meter 54 to predict the life of the roller tire based on the measured values during the crushing operation.
FIG. 4 is a graph of roller tire life prediction. FIG. (1) is a graph showing the relationship between the roller rotation speed and the elapsed time (H). The roller tire life prediction unit 60 first records the number of revolutions of a new roller during operation. The roller rotation speed is pressed against a constant rotation rotary table 14, and the roller tires are rotated in synchronization with the rotational peripheral speed and frictional force. However, the rotational peripheral speed differs depending on the point of synchronization and the roller tire diameter. come. Further, during the operation of the crusher, the thickness of the raw material layer on the rotary table 14 is constantly changing depending on the condition of the crushed material and the like. Since the roller rotation speed also fluctuates accordingly, it fluctuates with a certain width, but as the wear of the roller tire progresses, the roller tire diameter becomes smaller and the rotation speed gradually increases. Therefore, the number of roller rotations during operation after a lapse of a predetermined time (for example, 4000 hours) is recorded. It is assumed that the roller rotation speed when the roller tire is new is a1 rpm and the roller rotation speed after 4000 hours has passed is a2 rpm. Further, the roller rotation speed at the roller limit is set to a3 rpm (life set value). The intersection of the straight line (linear function) connecting a1 and a2 and a3 (constant) is the lifetime. The roller rotation speed is based on the same layer thickness. This is because when the layer thickness is increased, inter-slip occurs and the rotation of the roller tire becomes unstable. Therefore, in order to reproduce the relationship of the linear lines, the layer thickness must be within a certain range.
Since the roller rotation speed fluctuates greatly due to the influence of operation and the rate of change with respect to wear is small, it is difficult to accurately predict the life. Therefore, in the present invention, the measured value of the table raw material layer thickness is also used as the life prediction data. FIG. (2) is a graph showing the relationship between the raw material layer thickness (mm) and the elapsed time (H). The roller tire life prediction unit 60 first records the layer thickness of a new roller tire during operation. As the wear of the roller tires progresses, the number of rotations of the rollers increases and the layer thickness decreases. Therefore, the layer thickness after a lapse of a predetermined time (for example, 4000 hours) is recorded. The layer thickness when the roller tire is new is b1 mm, and the layer thickness after 4000 hours is b2 mm. Further, the layer thickness at the roller limit is b3 mm (life set value). The intersection of the straight line (linear function) connecting b1 and b2 and b3 (constant) is the lifetime.

FIG. 3 is an explanatory diagram of the bearing abnormality detection unit. The bearing abnormality detection unit 70 detects an abnormality in the roller bearing of the roller tire based on the measured values of the tachometer 51 and the vibration meter 52 during coasting rotation in which the roller tire during the crushing operation is raised from the rotary table. There is.
FIG. 5 is a graph of roller bearing abnormality detection. FIG. (1) is a graph showing the relationship between the roller inertial rotation speed (rpm) and the elapsed time (H). The bearing abnormality detection unit 70 first records the rotation speed c1 rpm of a new roller tire during inertial rotation. As the wear of the roller bearing progresses, the rotation becomes stagnant and the rotation speed gradually slows down. The roller rotation speed at the time of bearing limit wear is c3 rpm (abnormal set value). The intersection of c1 and c3 (constant) causes a roller bearing abnormality.
FIG. (2) is a graph showing the relationship between the roller vibration value (m / s) and the elapsed time (H). The bearing abnormality detection unit 70 first records the vibration d1 m / s when the roller is new during inertial rotation. As the roller bearing wears, the rotation slows down and the vibration gradually increases. The vibration value at the time of bearing limit wear is d3 m / s (abnormal setting value). The intersection of d1 and d3 (constant) causes a roller bearing abnormality. The cause of wear of the roller bearing is that dust is mixed in the bearing or deterioration over time. When dust gets into the bearing, wear progresses rapidly.

[How to monitor roller tires for vertical crushers]
The monitoring method of the roller tire 17 for a vertical crusher of the present invention having the above configuration will be described below.
A tachometer 51, a vibration meter 52, and a layer thickness meter 54 installed for each roller tire measure and record the rotation speed and vibration of a new roller tire and the raw material layer thickness of the crushed raw material between the roller tire and the rotary table 14.
FIG. 6 is an explanatory diagram of the display unit. The display unit 80 is a monitor of a system installed in a (remote) operation control room electrically connected to a monitoring system 50 of a roller tire 17 for a vertical crusher. As shown in the figure, the display screen of the display unit displays a perspective view of the roller to be monitored during operation. In this embodiment, the measured values of the rotation speed, layer thickness, and vibration value of each of the four rollers (NO1 to 4) are displayed.
The roller tire life prediction unit 60 records the rotation speed and layer thickness of the roller tire after a lapse of a predetermined time, and obtains the intersection (life time) of the straight line (linear function) connecting the a1 and a2 and the a3 (constant). Further, the intersection (life time) of the straight line (linear function) connecting b1 and b2 and b3 (constant) is obtained. The roller tire life is predicted for each roller tire from these two data (rotation speed and layer thickness).
The bearing abnormality detection unit 70 monitors the rotation speed and vibration of the roller tire, and determines that the roller bearing abnormality occurs when the c1 and c3 (constant) intersect. When d1 and d3 (constant) intersect, it is determined that the roller bearing is abnormal.
The display unit 80 displays the usage time, life time, bearing normality or abnormality for each roller tire, and further displays the roller rotation speed, the raw material layer thickness, and the transition of vibration (rotation speed and raw material layer thickness in the figure). To do. The operator can grasp the operating status of all roller tires from the display screen.

According to the present invention as described above, it is possible to accurately predict the life of the roller tire and detect the abnormality of the roller bearing during the operation of the crusher. It is possible to predict the life of roller tires for each roller tire and detect abnormalities in roller bearings. Unexpected troubles can be prevented, non-production time can be reduced, and stable continuous operation becomes possible.
The preferred embodiment of the present invention has been described above. However, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.
Further, the present invention is not limited to the combinations shown in the embodiments, and can be implemented by various combinations.

10 Vertical crusher 12 Casing 12B Lower casing 14 Rotating table 14A Rotating table upper surface 15 Table liner 16 Crushing roller 17 Roller tire 20 Arm 24 Hydraulic cylinder 30 Classification means 30a Rotating shaft 30b Rotating blade 30c Fixed blade 30e Internal cone 30f Feed pipe 32 Raw material input port 34 Raw material input chute 40 Circular passage 42 Gas inlet 44 Upper outlet 48 Dam ring 50 Roller tire monitoring system for vertical crusher 51 Rotation meter 51a Rotation detection ring 51b Non-contact sensor 52 Vibration meter 54 Layer thickness meter 60 Roller tire life prediction unit 70 Bearing abnormality detection unit 80 Display unit

Claims (7)

A tachometer that detects the number of revolutions of roller tires for vertical crushers,
A vibrometer that detects the vibration of the roller tire for the vertical crusher, and
A layer thickness gauge for measuring the raw material layer thickness of the crushing raw material between the roller tire for the vertical crusher and the rotary table, and
A roller tire life prediction unit that predicts the life of the roller tire for the vertical crusher based on the measured values of the tachometer and the layer thickness meter during the crushing operation.
Roller bearings of the roller tires for the vertical crusher based on the measured values of the tachometer and the vibration meter during the coasting rotation in which the roller tires for the vertical crusher during the crushing operation are raised from the rotary table. Bearing abnormality detection unit that detects abnormalities in
A roller tire monitoring system for vertical crushers, which is characterized by being equipped with. The roller tire monitoring system for a vertical crusher according to claim 1.
The roller tire life prediction unit
The intersection of the straight line connected by plotting the number of rotations of the roller tire for the vertical crusher at the time of initial setting and the elapse of a predetermined time, and the layer thickness value at the time of initial setting and the elapse of a predetermined time are plotted and connected. A monitoring system for a roller tire for a vertical crusher, characterized in that the life of the roller tire for a vertical crusher is predicted from the intersection of a straight line and a set value for the life. The roller tire monitoring system for a vertical crusher according to claim 1 or 2.
The bearing abnormality detecting unit is a roller tire monitoring system for a vertical crusher, which detects an abnormality of the roller bearing when the roller inertial rotation speed and the vibration value exceed a predetermined abnormality set value. The roller tire monitoring system for a vertical crusher according to any one of claims 1 to 3.
The tachometer
A rotation detection ring that forms a continuous uneven portion on the outer circumference, makes the axis coaxial with the axis of the roller tire for the vertical crusher, and rotates integrally with the roller tire for the vertical crusher.
A monitoring system for a roller tire for a vertical crusher, which is provided near the trajectory of the rotation detection ring and has a non-contact sensor that detects a pulse signal to obtain the rotation speed of the roller tire for the vertical crusher. The process of detecting the number of rotations of roller tires for vertical crushers,
The process of detecting the vibration of the roller tire for the vertical crusher and
The step of measuring the raw material layer thickness of the crushing raw material between the roller tire for the vertical crusher and the rotary table, and
A step of predicting the life of the roller tire for the vertical crusher based on the measured values of the rotation speed and the raw material layer thickness during the crushing operation, and
Based on the measured values of the rotation speed and the vibration during inertial rotation in which the roller tire for the vertical crusher during the crushing operation is raised from the rotary table, the roller bearing of the roller tire for the vertical crusher The process of detecting anomalies and
A method for monitoring roller tires for a vertical crusher, which comprises. The method for monitoring a roller tire for a vertical crusher according to claim 5.
The step of predicting the life of the roller tire for the vertical crusher is the intersection of the straight line connected by plotting the number of rotations of the roller tire for the vertical crusher at the time of initial setting and the elapse of a predetermined time, and the intersection of the life setting values. A roller tire for a vertical crusher, which is characterized in that the life of the roller tire for a vertical crusher is predicted from the intersection of a straight line connected by plotting the layer thickness values at the time of initial setting and the elapse of a predetermined time and the set value of life. Monitoring method. The method for monitoring a roller tire for a vertical crusher according to claim 5 or 6.
The step of detecting an abnormality in the roller bearing is a roller tire for a vertical crusher, which detects an abnormality in the roller bearing when the roller inertial rotation speed and the vibration value exceed a predetermined abnormality set value. Monitoring method.

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