CN117732538A - Cone crusher spindle motion trail monitoring and analyzing method and system - Google Patents
Cone crusher spindle motion trail monitoring and analyzing method and system Download PDFInfo
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Abstract
The invention discloses a method and a system for monitoring and analyzing the movement track of a spindle of a cone crusher, which are used for measuring the movement track of the spindle of the cone crusher under different running states so as to construct a characteristic database of the movement track of the spindle of the cone crusher. According to the invention, the running condition of the cone crusher is judged by monitoring the movement track of the spindle of the cone crusher, and the gap size of the eccentric sleeve of the cone crusher is judged, so that the abrasion condition of rotating parts such as the eccentric sleeve and the like is obtained.
Description
Technical Field
The invention relates to the technical field of cone crusher monitoring, in particular to a method and a system for monitoring and analyzing a spindle motion trail of a cone crusher.
Background
The cone crusher is a material crushing device widely applied to industries such as metallurgy, mine, sand aggregate and the like. The cone crusher has the advantages of large crushing ratio, high efficiency, low energy consumption and uniform product granularity, and is suitable for medium crushing and fine crushing of various ores and rocks. The working mechanism of the cone crusher consists of a fixed cone and a movable cone, wear-resistant lining plates are attached to the cones, and a crushing cavity is formed in the space between the lining plates. The motor drives the large and small circular arc bevel gears through the belt pulley, so that the movable cone eccentrically rotates around the spherical center of the spherical tile. In a vertical plane, when the movable cone approaches the fixed cone, the material is impacted and extruded to be crushed, and when the movable cone leaves the fixed cone, the crushed product is discharged from the discharge hole due to dead weight. However, there is a gap between the cone crusher main shaft and the eccentric sleeve. During operation, the main shaft and the eccentric sleeve are lubricated but still generate friction, so that a large amount of heat is taken away along with the lubricating oil. When the oil quality is deteriorated, unbalanced load or heavy load or instantaneous oil shortage occurs, the eccentric sleeve can be burnt out or even sintered due to overheating, so that the normal operation of the main shaft is affected, the movement track is abnormal, abnormal abrasion or damage of the rotating part occurs, the normal production cannot be carried out, the production efficiency is seriously affected, and the production cost is increased. However, because the eccentric sleeve and other rotating parts are difficult to overhaul, the crusher needs to be disassembled and overhauled, time and labor are very consumed, and excessive maintenance or under-maintenance can be easily caused by timing overhaul.
The eccentric sleeve of the cone crusher is severely worn because of poor lubrication, unbalanced load and heavy load, and the reasons for the serious wear are mainly as follows:
1. poor lubrication or pollution causes the increase of the clearance between the eccentric sleeve and the main shaft due to abnormal abrasion, thereby affecting the movement track of the main shaft of the cone crusher.
2. Poor lubrication or pollution causes abnormal abrasion or fracture of the frame bushing, thereby affecting the movement track of the spindle of the cone crusher.
3. When unbalanced load or heavy load occurs in feeding, uneven crushing force is easily caused, or when the crushing force exceeds a design value, rotating parts such as eccentric sleeves and the like can be worn seriously, and the operation of a main shaft is affected.
Maintaining adequate lubrication of the lubricated parts is a fundamental guarantee that the equipment will have a longer service life. However, because the working conditions of the mine production site are complex and changeable, the lubricating oil can not be guaranteed to be in an ideal use state all the time, and the problems of unstable lubrication pressure, serious pollution of the lubricating oil, deterioration and failure of the lubricating oil product and the like often occur along with the time, the traditional oil monitoring can only monitor the use state of the lubricating oil, but can not correspond to the state of a lubricating part, and often rotating parts such as an eccentric sleeve are worn seriously or even burnt out when the abrasive particles in the lubricating oil are found to be more. When unbalanced load or heavy load occurs, the main shaft of the crusher is unevenly stressed, and the operation of the main shaft can be influenced.
In the running process of the existing cone crusher, even if the eccentric sleeve is abnormally worn in the running process, the eccentric sleeve cannot be judged on site effectively, and faults such as damage to the eccentric sleeve or the bearing gear can be judged indirectly only when a large number of wear particles appear in the lubricating oil of the cone crusher. This determination of eccentric wear is delayed and can result in economic losses. By the method, uncertainty often exists in judging the abrasion of the eccentric sleeve, the abrasion of what part cannot be judged, and when a problem is found, the abrasion is serious, so that the normal operation of equipment can be directly influenced. Therefore, aiming at abnormal wear or damage monitoring of rotating parts such as eccentric sleeves and the like, it is necessary to develop a method for intelligently monitoring the eccentric sleeves of the cone crusher. However, in the operation process of the cone crusher, because the rotating parts such as the eccentric sleeve and the like are positioned in the equipment, the abrasion condition of the rotating parts such as the eccentric sleeve and the like cannot be directly judged, and therefore, only a method for indirectly judging the abrasion of the rotating parts can be adopted. When rotating parts such as the eccentric sleeve of the cone crusher are worn, the gap between the main shaft of the cone crusher and the eccentric sleeve can be increased, and the movement track of the main shaft of the cone crusher can be changed when the gap is increased beyond a certain range, so that whether the eccentric sleeve of the cone crusher is worn can be judged by monitoring the movement track of the main shaft of the cone crusher.
The eddy current sensor can measure the distance between the measured metal conductor and the probe surface in a static and dynamic non-contact mode with high linearity and high resolution. It is a non-contact linearization metrology tool. The eddy current sensor system measures a distance between a sensor and a measured object (target) in a non-contact manner and outputs a voltage signal proportional to the measured distance. The static component of the measurement is the "gap", i.e. the absolute distance between the target surface and the probe. The dynamic component of the measurement is "vibration", i.e. periodic movement of the target towards or away from the probe. The eddy current sensor system is combined with the measuring module to measure vibration, eccentricity, shaft displacement, rotation speed and the like of the rotating shaft. The device is commonly used for continuously measuring or monitoring high-speed rotating shafts, such as turbines, generators and compressors, and can accurately measure static and dynamic relative displacement changes between a measured object (necessarily a metal conductor) and a probe end face. The device has the characteristics of good long-term working reliability, high sensitivity, strong anti-interference capability, non-contact measurement, high response speed, no influence of oil-water and other mediums, and can analyze the working condition and failure cause of the device, and effectively protect and pre-maintain the device.
Disclosure of Invention
In order to solve the problem that the abrasion condition of rotating parts such as eccentric sleeves and the like cannot be judged in the running process of the existing cone crusher, the abrasion problem of the rotating parts such as the eccentric sleeves and the like cannot be found in the early stage of abnormal movement track, the rotating parts such as the eccentric sleeves and the like are further abraded, and even the eccentric sleeves are burnt out and sintered to finally damage crusher equipment. The invention provides a method and a system for monitoring and analyzing the movement track of a spindle of a cone crusher.
The technical principle of the invention is as follows: the ideal motion trail of the spindle of the cone crusher is determined in the design stage of the drawing, and the motion trail is changed according to the gap of the eccentric sleeve, so that the size of a discharge hole in the use process of the cone crusher is determined. However, the motion track of the spindle of the cone crusher in the actual field working state often cannot be kept consistent with the designed motion track of the spindle of the cone crusher due to the abrasion of the eccentric sleeve, and the motion track of the spindle of the cone crusher is influenced due to the change of the gap between the spindle and the eccentric sleeve due to the abrasion of the eccentric sleeve. When the movement track of the spindle of the cone crusher is changed, because the spindle and the eccentric assembly are both positioned in the cone crusher, the abnormal running state of the cone crusher is difficult to find by field personnel or a camera, the movement track of the spindle is monitored in real time only by a sensor and is drawn into the movement track of the spindle of the cone crusher according to monitoring data, then faults can be found by comparing the movement track of the spindle of the cone crusher in a normal working state with the movement track of the spindle of the abnormal cone crusher, and after the movement track of the spindle of the abnormal cone crusher is found, the abrasion condition of the eccentric sleeve can be calculated by combining historical data.
According to the method for monitoring and analyzing the spindle motion trail of the cone crusher, spindle motion trail of the cone crusher in different running states is measured to construct a spindle motion trail feature database of the cone crusher, the spindle motion trail of the real-time cone crusher is compared with the spindle motion trail feature database of the cone crusher by monitoring the spindle motion trail of the real-time cone crusher, the spindle motion trail of the history cone crusher with highest similarity with the spindle motion trail of the real-time cone crusher is searched, and the working condition corresponding to the spindle motion trail of the history cone crusher with highest similarity is the running state of the current cone crusher.
Further preferably, measuring the motion trail of the spindle of the cone crusher in different running states to construct a feature database of the motion trail of the spindle of the cone crusher comprises:
measuring and recording the motion track of the spindle of the cone crusher under the conditions that the cone crusher is empty or uniformly loaded and the eccentric sleeve is not worn;
measuring and recording the motion trail of the main shaft of the cone crusher under the condition of uneven loading or heavy loading of the crushing cavity, and recording time and corresponding pictures and videos of the distribution condition of the materials in the crushing cavity;
and measuring and recording the motion trail of the spindle of the cone crusher when the eccentric sleeve is worn, and recording time and corresponding unbalanced load pictures and videos.
Further preferably, in the real-time monitoring process of the cone crusher, the real-time cone crusher spindle motion trail and corresponding running state data are supplemented into a cone crusher spindle motion trail feature database so as to continuously enrich the cone crusher spindle motion trail feature database.
Further, under the condition that the difference value between the real-time spindle motion trail of the cone crusher and the normal spindle motion trail of the cone crusher or the spindle motion trail of the cone crusher at the previous moment exceeds a set threshold value, alarming is carried out to remind the abnormal running state of the spindle of the cone crusher, the allowable parameters and the current allowable photos of the cone crusher are output, and the most similar conditions in the spindle motion trail feature database of the cone crusher are searched to give out primarily judged fault problems and maintenance suggestions.
Further, the process of judging whether the difference value between the motion trail of the main shaft of the real-time cone crusher and the motion trail of the main shaft of the normal cone crusher exceeds a set threshold value is as follows:
inputting the maximum X-axis displacement difference delta X according to the fluctuation range of the motion trail of the main shaft of the normal cone crusher max And the maximum Y-axis displacement difference Deltay max The method comprises the steps of carrying out a first treatment on the surface of the The calculation mode of the difference between the motion trail of the main shaft of the real-time cone crusher and the motion trail of the main shaft of the normal cone crusher is as follows:
△x＝|x-x 0 |；
△y＝|y-y 0 |；
wherein x is 0 Is the X-axis displacement, y of the motion trail of the main shaft of the normal cone crusher 0 The Y-axis displacement of the motion track of the main shaft of the normal cone crusher is represented by X, the X-axis displacement of the motion track of the main shaft of the real-time cone crusher is represented by Y, the Y-axis displacement of the motion track of the main shaft of the real-time cone crusher is represented by delta X, the real-time X-axis displacement difference value is represented by delta Y, and the real-time Y-axis position is represented by delta YThe value of the shift is used to shift the value,
when meeting Deltax > Deltax max ，△y＞△y max And judging that the cone crusher is in an abnormal running state under any condition.
Further preferably, the wear speed of the eccentric sleeve is judged according to the change condition of the movement track of the spindle of the cone crusher, and the wear degree and the residual service life of the eccentric sleeve are further calculated.
Further preferably, the spindle motion trail of the cone crusher when the eccentric sleeve is in normal operation and is not worn is used, then the spindle motion trail of the cone crusher when the eccentric sleeve is in different wear amounts is monitored, and the spindle motion trail of the cone crusher when the eccentric sleeve is in different wear amounts is compared with the spindle motion trail of the cone crusher when the eccentric sleeve is in normal operation and is not worn, so that the long and short shaft values, displacement change values and angle value change curves of the eccentric sleeve are obtained; and comparing the motion track of the spindle of the real-time cone crusher with the motion track of the spindle of the cone crusher which normally runs and the eccentric sleeve is not worn, obtaining a long and short axis value, a displacement change value and an angle value, and reversely pushing the wear amount according to the long and short axis value, the displacement change value and the angle value change curve when different wear amounts are adopted.
Further preferably, according to the similarity comparison between the real-time spindle motion trail of the cone crusher and the spindle motion trail of the history cone crusher, the spindle motion trail of the history cone crusher with the highest similarity is found, and the corresponding abrasion loss is primarily judged to be the current eccentric sleeve abrasion loss.
Further preferably, when alarming, the running condition judged by artificial checking is input into a cone crusher spindle motion trail feature database and matched with the cone crusher spindle motion trail so as to prevent false alarm data from interfering with the accuracy of the cone crusher spindle motion trail feature database.
Further preferably, features of spindle motion trajectories of the cone crushers are extracted by means of a feature extraction algorithm, similarity of the spindle motion trajectories of different cone crushers is judged by comparing feature values of the spindle motion trajectories of the different cone crushers, and accordingly a historical spindle motion trajectory of the cone crusher with the highest similarity is selected.
The invention also provides a system for monitoring and analyzing the movement track of the spindle of the cone crusher, which comprises an eddy current sensor, a data acquisition device and an industrial personal computer or a cloud platform, wherein the eddy current sensor is used for measuring the X-axis displacement and the Y-axis displacement of the spindle in a radial plane, the data acquisition device is used for transmitting the measured X-axis displacement and Y-axis displacement to the industrial personal computer, the industrial personal computer or the cloud platform is internally provided with a data analysis module, and the data analysis module is used for summarizing the X-axis displacement and the Y-axis displacement, drawing the movement track of the spindle of the cone crusher and judging the running state of the cone crusher according to the movement track of the spindle of the cone crusher.
Further preferably, the electric vortex sensor probe is installed through the installation support and keeps a certain distance from the measured reference surface of the main shaft, a cable of the electric vortex sensor probe is connected to a front-end processor of the electric vortex sensor through a frame on the main shaft and is gathered to an external wiring terminal box of the cone crusher through the cable, the wiring terminal box is connected with the data acquisition device, and real-time data are transmitted to the industrial personal computer through the data acquisition device.
The invention also provides a cone crusher with the main shaft movement track monitoring function.
The beneficial effects of the invention are as follows: the method has the advantages that the motion trail of the spindle of the cone crusher can be monitored remotely and in real time, the abrasion condition of the eccentric sleeve is indirectly judged through the motion trail of the spindle of the cone crusher, whether the spindle of the cone crusher is in a normal motion trail is timely judged, the motion trail of the spindle of the cone crusher is found early, and a person is reminded to maintain, so that a series of subsequent damages caused by long-term improper use of field equipment are effectively reduced, early judgment of the faults of the cone crusher is realized, and predictive maintenance of the cone crusher is further realized. The problem that the abrasion condition of the eccentric sleeve cannot be judged in time due to the waste force of the cone crusher during the dismantling and inspection is solved, the eccentric sleeve is worn and burnt frequently, huge loss is caused to an on-site production line, the unplanned downtime caused by sudden failure of the cone crusher is effectively reduced, and the loss born by a user due to unplanned failure shutdown is reduced.
Drawings
Fig. 1 is a cross-sectional side view of a cone crusher with spindle motion profile monitoring.
FIG. 2 is a graph of spindle X-axis displacement;
FIG. 3 is a graph of spindle Y-axis displacement;
fig. 4 is a motion profile of the spindle of the cone crusher plotted according to an X-axis displacement curve and a Y-axis displacement curve.
Reference numerals illustrate: 1-arm support caps, 2-beam guard plates, 3-arm support bushings, 4-top nuts, 5-movable cone liners, 6-fixed cone liners, 7-main shafts and movable cones, 8-wear plates, 9-lower frame bushings, 10-eccentric sleeves, 11-eccentric copper sleeves, 12-thrust bearings, 13-pistons, 14-transmission bearing blocks, 15-transmission shafts, 16-dust covers, 17-fixed blocks, 18-dust rings, 19-lower frames, 20-upper frames, 21-guard plates, 22-eddy current sensor probes and 23-preamplifiers.
Detailed Description
The invention is further elucidated in the following in connection with the accompanying drawings and examples.
As shown in fig. 1, the cone crusher with main shaft motion track monitoring provided in this embodiment includes a boom cap 1, a beam guard plate 2, a boom bushing 3, a top nut 4, a movable cone liner 5, a fixed cone liner 6, a main shaft and a movable cone 7, a wear-resistant disc 8, a lower frame bushing 9, an eccentric sleeve 10, an eccentric copper sleeve 11, a thrust bearing 12, a piston 13, a transmission bearing seat 14, a transmission shaft 15, a dust cover 16, a fixed block 17, a dust ring 18, a lower frame 19, an upper frame 20, a guard plate 21, an eddy current sensor probe 22, and a front-end processor 23; the mechanical structure and connection of the cone crusher belong to the prior art, and are not described in detail here, the improvement of this embodiment is that an eddy current sensor is mounted on the main shaft. In the embodiment, two eddy current sensor probes 22 are arranged on a frame of the cone crusher at the position aligned with the main shaft, the two eddy current sensor probes 22 are vertical and aligned with the center line of the main shaft, and the measuring directions of the eddy current sensor probes 22 are vertically intersected and are used for measuring the X-axis displacement and the Y-axis displacement of the main shaft in a radial plane.
The clearance between the eddy current sensor and the target is measured according to the following principle: when a high frequency current of 1MHz is applied to the eddy current sensor probe 22 through the oscillator, the tip of the eddy current sensor probe 22 generates a high frequency magnetic field. The interaction of the high frequency magnetic flux on the target generates eddy currents that flow over the target surface. Eddy currents, when flowing over the target surface, create a magnetic field laterally of the target and the eddy current sensor probe 22 impedance changes. When this change in the oscillator output is detected, the linear circuit adjusts the distance to the output voltage in a linear relationship and then outputs the result. Therefore, in order to ensure the accuracy of the measurement data, the arranged eddy current sensor probe 22 needs to be aligned with the exposed spindle portion and keep a certain distance from the measured reference surface, so that the measured reference surface is required to be within the measurement range of the eddy current sensor probe 22, and the risk of being hit by the spindle cannot be caused. Therefore, it is important to select an appropriate measurement range of the eddy current sensor probe 22. The selected eddy current sensor probe 22 is installed through the installation support and keeps a certain distance from the measured reference surface of the main shaft, a cable of the eddy current sensor probe 22 is connected to a front device of the eddy current sensor through a rack on the main shaft and finally summarized to an external wiring terminal box of the cone crusher through the cable, and the wiring terminal box is a rapid plugging system, can be deployed locally and is connected with a data acquisition device, and real-time data are transmitted to an industrial personal computer through the data acquisition device.
Therefore, the embodiment provides a cone crusher main shaft motion trail monitoring and analyzing system, which comprises an eddy current sensor, a data acquisition device and an industrial personal computer or a cloud platform, wherein the eddy current sensor is used for measuring X-axis displacement and Y-axis displacement of a main shaft in a radial plane, the data acquisition device is used for transmitting the measured X-axis displacement and Y-axis displacement to the industrial personal computer, the industrial personal computer or the cloud platform is internally provided with a data analysis module, and the data analysis module is used for summarizing the X-axis displacement and Y-axis displacement and drawing the cone crusher main shaft motion trail (as shown in fig. 2-4) and judging the cone crusher running state according to the cone crusher main shaft motion trail. In the embodiment, the data analysis module draws the motion trail of the spindle of the cone crusher through a cone trail monitoring algorithm.
Another embodiment of the invention provides a method for monitoring and analyzing the spindle motion trail of a cone crusher, which is used for measuring the spindle motion trail of the cone crusher under different running states to construct a spindle motion trail feature database of the cone crusher, comparing the spindle motion trail of the real-time cone crusher with the spindle motion trail feature database of the cone crusher by monitoring the spindle motion trail of the real-time cone crusher, and searching the spindle motion trail of the history cone crusher with the highest similarity with the spindle motion trail of the real-time cone crusher, wherein the working condition corresponding to the spindle motion trail of the history cone crusher with the highest similarity is the running state of the current cone crusher. The method can judge the fault characteristics of the crusher such as iron passing, overload, eccentric sleeve abrasion and the like, remove faults in time, prevent the cone crusher from being further damaged, ensure the normal and stable working operation of the cone crusher, prolong the service life of the eccentric sleeve and reduce the operation and maintenance cost of the cone crusher.
More specifically, measuring the motion trail of the spindle of the cone crusher in different running states to construct a feature database of the motion trail of the spindle of the cone crusher comprises:
measuring and recording the motion track of the spindle of the cone crusher under the conditions that the cone crusher is empty or uniformly loaded and the eccentric sleeve is not worn;
measuring and recording the motion trail of the main shaft of the cone crusher under the condition of uneven loading or heavy loading of the crushing cavity, and recording time and corresponding pictures and videos of the distribution condition of the materials in the crushing cavity;
and measuring and recording the motion trail of the spindle of the cone crusher when the eccentric sleeve is worn, and recording time and corresponding unbalanced load pictures and videos.
In the real-time monitoring process of the cone crusher, the real-time cone crusher spindle motion trail and corresponding running state data are supplemented to a cone crusher spindle motion trail feature database, so that the cone crusher spindle motion trail feature database is continuously enriched, and the accuracy of data analysis is continuously improved. Through continuous accumulation and study of on-site real-time data, the judging method can also continuously improve the reliability and serve as a reliable basis for the state health diagnosis of the remote equipment.
Further, under the condition that the difference value between the motion trail of the spindle of the real-time cone crusher and the motion trail of the spindle of the normal cone crusher or the motion trail of the spindle of the cone crusher at the previous moment exceeds a set threshold value, alarming to remind the running state of the spindle of the cone crusher to be abnormal, outputting allowable parameters and current allowable photos of the cone crusher, and searching the most similar condition in a spindle motion trail feature database of the cone crusher to give out primarily judged fault problems and maintenance suggestions; the output data also comprises various numerical comparison results of the motion trail of the spindle of the cone crusher, including a long-short axis value, a displacement change value and an angle value.
The process for judging whether the difference value between the motion trail of the main shaft of the real-time cone crusher and the motion trail of the main shaft of the normal cone crusher exceeds a set threshold value is as follows:
inputting the maximum X-axis displacement difference delta X according to the fluctuation range of the motion trail of the main shaft of the normal cone crusher max And the maximum Y-axis displacement difference Deltay max The method comprises the steps of carrying out a first treatment on the surface of the The calculation mode of the difference between the motion trail of the main shaft of the real-time cone crusher and the motion trail of the main shaft of the normal cone crusher is as follows:
△x＝|x-x 0 |；
△y＝|y-y 0 |；
wherein x is 0 Is the X-axis displacement, y of the motion trail of the main shaft of the normal cone crusher 0 Is the Y-axis displacement of the normal cone crusher spindle motion trail, X is the X-axis displacement of the real-time cone crusher spindle motion trail, Y is the Y-axis displacement of the real-time cone crusher spindle motion trail, deltax is the real-time X-axis displacement difference, deltay is the real-time Y-axis displacement difference,
when meeting Deltax > Deltax max ，△y＞△y max And judging that the cone crusher is in an abnormal running state under any condition.
According to the invention, the wear speed of the eccentric sleeve is judged according to the change condition of the motion trail of the main shaft of the cone crusher, the wear degree and the residual service life of the eccentric sleeve are further calculated, and meanwhile, a user is reminded to optimize the lubrication effect or prepare spare parts in time, so that the equipment abnormal shutdown caused by the damage of the eccentric sleeve is prevented from causing more loss to the user production line.
The method comprises the steps of using a spindle motion track of a cone crusher when the eccentric sleeve is in normal operation and is not worn, then monitoring the spindle motion track of the cone crusher when the eccentric sleeve is in different wear amounts, and comparing the spindle motion track of the cone crusher when the eccentric sleeve is in normal operation and is not worn with the spindle motion track of the cone crusher when the eccentric sleeve is in different wear amounts, so as to obtain a long and short shaft value, a displacement change value and an angle value change curve when the eccentric sleeve is in different wear amounts; and comparing the motion track of the spindle of the real-time cone crusher with the motion track of the spindle of the cone crusher which normally runs and the eccentric sleeve is not worn, obtaining a long and short axis value, a displacement change value and an angle value, and reversely pushing the wear amount according to the long and short axis value, the displacement change value and the angle value change curve when different wear amounts are adopted. Or comparing the similarity between the motion trail of the spindle of the real-time cone crusher and the motion trail of the spindle of the historical cone crusher, finding out the motion trail of the spindle of the historical cone crusher with the highest similarity, and primarily judging the corresponding abrasion loss as the current abrasion loss of the eccentric sleeve.
It should be further noted that, when alarming, during the manual checking, the running condition judged by the manual checking is input into the cone crusher spindle motion trail feature database and is matched with the cone crusher spindle motion trail so as to prevent false alarm data from interfering with the accuracy of the cone crusher spindle motion trail feature database.
The above embodiments compare the spindle motion trajectories of the cone crusher with the most intuitive and remarkable features from the displacement values, the length and the short axis of the spindle motion trajectories of the cone crusher, and the angle values. The spindle motion trail of the cone crusher is a motion trail about time, features of the spindle motion trail of the cone crusher can be extracted by utilizing a feature extraction algorithm, and similarity of spindle motion trail of different cone crushers is judged by comparing feature values of spindle motion trail of different cone crushers, so that the spindle motion trail of the history cone crusher with highest similarity is selected.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent processes or direct or indirect applications in other related technical fields using the present invention are included in the scope of the present invention.
Claims (10)
1. A method for monitoring and analyzing the spindle motion trail of a cone crusher is characterized by measuring spindle motion trail of the cone crusher under different running states to construct a spindle motion trail feature database of the cone crusher, comparing the spindle motion trail of the real-time cone crusher with the spindle motion trail feature database of the cone crusher by monitoring the spindle motion trail of the real-time cone crusher, and searching the spindle motion trail of the history cone crusher with highest similarity to the spindle motion trail of the real-time cone crusher, wherein the working condition corresponding to the spindle motion trail of the history cone crusher with highest similarity is the running state of the current cone crusher.
2. The method of claim 1, wherein measuring the motion trajectories of the spindle of the cone crusher in different operating states to construct the feature database of the motion trajectories of the spindle of the cone crusher comprises: measuring and recording the motion track of the spindle of the cone crusher under the conditions that the cone crusher is empty or uniformly loaded and the eccentric sleeve is not worn;
measuring and recording the motion trail of the main shaft of the cone crusher under the condition of uneven loading or heavy loading of the crushing cavity, and recording time and corresponding pictures and videos of the distribution condition of the materials in the crushing cavity;
and measuring and recording the motion trail of the spindle of the cone crusher when the eccentric sleeve is worn, and recording time and corresponding unbalanced load pictures and videos.
3. The method for monitoring and analyzing the movement track of the spindle of the cone crusher according to claim 1, wherein the real-time movement track of the spindle of the cone crusher and the corresponding running state data are supplemented to a characteristic database of the movement track of the spindle of the cone crusher in the real-time monitoring process of the cone crusher so as to continuously enrich the characteristic database of the movement track of the spindle of the cone crusher.
4. The method for monitoring and analyzing the spindle motion trail of the cone crusher according to claim 1, wherein when the difference value between the real-time spindle motion trail of the cone crusher and the normal spindle motion trail of the cone crusher or the spindle motion trail of the cone crusher at the previous moment exceeds a set threshold value, an alarm is given to remind the abnormal running state of the spindle of the cone crusher, the allowable parameters and the current allowable photos of the cone crusher are output, and the most similar situation in the spindle motion trail feature database of the cone crusher is searched to give a primarily judged fault problem and maintenance suggestion.
5. The method for monitoring and analyzing the movement track of the spindle of a cone crusher according to claim 4, wherein the process of judging whether the difference between the movement track of the spindle of the cone crusher in real time and the movement track of the spindle of the normal cone crusher exceeds a set threshold value is as follows:
inputting the maximum X-axis displacement difference delta X according to the fluctuation range of the motion trail of the main shaft of the normal cone crusher max And the maximum Y-axis displacement difference Deltay max The method comprises the steps of carrying out a first treatment on the surface of the The calculation mode of the difference between the motion trail of the main shaft of the real-time cone crusher and the motion trail of the main shaft of the normal cone crusher is as follows:
△x＝|x-x 0 |；
△y＝|y-y 0 |；
wherein x is 0 Is the X-axis displacement, y of the motion trail of the main shaft of the normal cone crusher 0 Is the Y-axis displacement of the normal cone crusher spindle motion trail, X is the X-axis displacement of the real-time cone crusher spindle motion trail, Y is the Y-axis displacement of the real-time cone crusher spindle motion trail, deltax is the real-time X-axis displacement difference, deltay is the real-time Y-axis displacement difference,
when meeting Deltax > Deltax max ，△y＞△y max Any condition is used for judging that the cone crusher is in an abnormal running state。
6. The method for monitoring and analyzing the motion trail of the spindle of the cone crusher according to claim 1, wherein the wear rate of the eccentric sleeve is judged according to the change condition of the motion trail of the spindle of the cone crusher, and the wear degree and the residual service life of the eccentric sleeve are further calculated.
7. The method for monitoring and analyzing the spindle motion trail of the cone crusher according to claim 6, wherein the spindle motion trail of the cone crusher when normal operation and the eccentric sleeve is not worn is used, then the spindle motion trail of the cone crusher when the eccentric sleeve is different in wear amount is monitored, and the spindle motion trail of the cone crusher when the eccentric sleeve is different in wear amount is compared with the spindle motion trail of the cone crusher when the eccentric sleeve is not worn and the long and short shaft values, displacement change values and angle value change curves when the eccentric sleeve is not worn are obtained; and comparing the motion track of the spindle of the real-time cone crusher with the motion track of the spindle of the cone crusher which normally runs and the eccentric sleeve is not worn, obtaining a long and short axis value, a displacement change value and an angle value, and reversely pushing the wear amount according to the long and short axis value, the displacement change value and the angle value change curve when different wear amounts are adopted.
8. The method for monitoring and analyzing the spindle motion trail of the cone crusher according to claim 6, wherein the historical cone crusher spindle motion trail with the highest similarity is found according to similarity comparison between the real-time spindle motion trail of the cone crusher and the historical cone crusher spindle motion trail, and the corresponding abrasion loss is primarily judged to be the current eccentric sleeve abrasion loss.
9. The system is characterized by comprising an eddy current sensor, a data acquisition device and an industrial personal computer or a cloud platform, wherein the eddy current sensor is used for measuring X-axis displacement and Y-axis displacement of a main shaft in a radial plane, the data acquisition device is used for transmitting the measured X-axis displacement and Y-axis displacement to the industrial personal computer, the industrial personal computer or the cloud platform is internally provided with a data analysis module, and the data analysis module is used for summarizing the X-axis displacement and Y-axis displacement, drawing the movement locus of the main shaft of the cone crusher and judging the running state of the cone crusher according to the movement locus of the main shaft of the cone crusher; by monitoring the motion trail of the spindle of the real-time cone crusher, comparing the motion trail of the spindle of the real-time cone crusher with the characteristic database of the motion trail of the spindle of the cone crusher, searching the motion trail of the spindle of the history cone crusher with the highest similarity with the motion trail of the spindle of the real-time cone crusher, and obtaining the working condition corresponding to the motion trail of the spindle of the history cone crusher with the highest similarity as the running state of the current cone crusher.
10. The system for monitoring and analyzing the movement track of the main shaft of the cone crusher according to claim 9, wherein the electric vortex sensor probe is installed through the installation support and keeps a certain distance from the measured reference surface of the main shaft, a cable of the electric vortex sensor probe is connected to a front-end processor of the electric vortex sensor through a frame on the main shaft and is gathered to an external connection terminal box of the cone crusher through the cable, the connection terminal box is connected with the data acquisition device, and real-time data is transmitted to the industrial personal computer through the data acquisition device.
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| CN202410048267.1A CN117732538A (en) | 2024-01-12 | 2024-01-12 | Cone crusher spindle motion trail monitoring and analyzing method and system |
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| CN202410048267.1A CN117732538A (en) | 2024-01-12 | 2024-01-12 | Cone crusher spindle motion trail monitoring and analyzing method and system |
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