JP2005536329A - Method and apparatus for measuring and adjusting crusher settings - Google Patents

Abstract

A method and apparatus for measuring and monitoring the setting of a crusher during a pulverization process, and a sensor for measuring the amount of corrosion of worn parts of the crusher are provided.
[Solution]
In the method of the present invention, the corrosion of the worn parts of the crusher is measured using a sensor that can send measurement data to the crusher's automatic control system. Based on this data, the control system adjusts the crusher setting to keep the setting at a predetermined value regardless of the corrosion of the worn parts. The invention also relates to a wear sensor for wear parts of the crusher. At this time, measurement data indicating the amount of corrosion of the worn parts is wirelessly transmitted to the outside of the crusher.

Description

  The present invention relates to a crusher. More specifically, the present invention relates to the measurement and adjustment of crusher settings so that the set position of the crusher settings can be kept constant regardless of the corrosion of the worn parts of the crusher. The present invention also relates to an embodiment of a wear sensor that indicates corrosion of the worn parts of the crusher.

  The cone crusher has a vertical eccentric shaft and an inner bore formed to be inclined with respect to the vertical eccentric shaft. A crusher main shaft is mounted in the bore, and a support cone is generally mounted thereon. The support cone is surrounded by a crusher frame with an outer wear member commonly known as a bowl liner attached to the inside of the frame. Also, an inner wear member commonly known as a headliner is mounted on the support cone. The headliner and bowl liner form a crusher chamber and crush the material supplied therein. When the eccentric shaft is rotated, the main shaft together with the support cone performs a vibrating motion as a set, and during each rotation, the gap between the head and the bowl is changed. The minimum gap width in one full rotation is called the crusher setting, and the difference between the maximum and minimum gap width is called the crusher stroke. By adjusting the crusher setting and stroke as well as the crusher rotation speed, it is possible to correct operational variables such as the distribution of the size of the rock particles to be crushed and the crusher production performance.

  Usually, the upper end of the main shaft of the crusher is supported by the crusher frame by an upper support bearing. In this case, this type of cone crusher is commonly referred to as a gyratory crusher.

  The swirling crusher is generally adjusted by moving the main shaft in a direction perpendicular to the crusher frame using a hydraulic system. As a result, the crusher settings can be set so that the size of the rock particles to be crushed is matched to the specific particle size of the crusher order and / or the crusher setting remains constant regardless of crusher liner wear. May be changed.

  In other types of cone crushers, the crusher settings can be adjusted by moving the crusher's upper frame, together with the crusher head attached thereto, up or down relative to the crusher's lower frame. This may be done by fixing the vertical position of the main axis with respect to the frame.

In an impact crusher, the supplied material is crushed between a rotating rotor with a breaker bar and a breaker plate mounted on the inner wall of the crusher frame. This type of crusher is provided with a plurality of breaker plates at different distances from the rotor, so that the supplied material can be gradually reduced to be crushed. The crusher setting that controls the final collected size of the rock to be crushed is determined by the last breaker plate set position in the transport direction of the material collected through the crusher. And in order to protect a breaker plate, a wear part is attached to the area | region outside a breaker plate, and it is made to act as the surface for grinding | pulverization.
The impact crusher can be configured horizontally or vertically.

  In the jaw crusher, two opposing jaws are used to form a crushing cavity. One of these jaws is fixedly attached to a frame on the front side of the crusher, and the other jaw is a movable jaw. The crusher is connected to a vibration element called a pitman together with a side plate that connects the front frame to the rear frame. The crushing cavities formed between the grinding jaws are gaps that taper downward, and the distance between the lower ends of the jaws is called the crusher setting. An eccentric shaft is extended through the eyes of the pitman, and the eccentric shaft is mounted in a bearing shape on the side plate of the crusher and the pitman. The eccentric shaft is connected to a flywheel that is rotated by an external drive mechanism. Using this eccentric shaft, the movable jaw connected to the pitman can move substantially elliptically for grinding with respect to the fixed jaw. Generally, the setting of the jaw crusher is adjusted using a setting adjustment wedge attached to the frame on the rear side of the crusher, and the wedge is slid relative to the toggle plate in the frame on the rear side of the crusher. Thus, the position of the lower end portion of the movable die plate is shifted with respect to the frame on the rear side of the crusher, that is, the fixed jaw. In addition, other types of setting adjustments are known in the prior art, but one of them is disclosed in Patent Document 1, for example.

  However, today there is no known technique for monitoring the current (actual) value of the crusher setting. Conventional technology only allows the crusher parts to be monitored relative to each other with respect to crusher setting adjustment and wear part support. However, this information was insufficient to achieve automated adjustment of crusher settings because neither the current thickness of the wear part nor the rate of wear could be determined. In general, wear corrections firstly inspected the wear parts of the crusher regularly, and as a result, estimated further need for setting adjustments. However, even rocks from a single quarry have been found to be particularly unreliable because this type varies widely.

  Moreover, what was disclosed by patent document 2 is disclosing the method of monitoring the progress of wear of the wear parts of a crusher. In the invention disclosed in Patent Document 2, a groove is provided on the rear surface of the wear part of the crusher so that this depth reaches the maximum tolerance of wear of the wear part of the crusher. The groove is filled with a suitable material such as, for example, a color component. When the corrosion of the worn part finally reaches the point representing the groove, the color component is dispersed on the surface of the worn part of the crusher so that the operator of the crusher can easily check the wear. However, in this type of configuration, the crusher must always be stopped at the time of confirmation, so that it is not possible to show wear information online during grinding, resulting in a loss in production performance. Furthermore, in the invention disclosed in the above-mentioned patent document, since the operator of the crusher has to climb on the crusher in order to visually recognize the color component in the crushing chamber, there is always a possibility that the safety of the operator is impaired. It was out. And this type of configuration could not monitor the corrosion of the worn parts in real time and only showed the final point where the worn parts of the crusher had to be replaced.

  Further, for example, Patent Documents 3 and 4 disclose sensors suitable for monitoring the state of wear parts of a crusher known in the prior art, but these disclosed wear sensors are connected in a series. It works on the basis of an electrical circuit including a resistor. The wear part of the sensor has a conductor so that it breaks with the corrosion of the worn parts and increases or decreases the resistance of the sensor circuit.

Patent Document 5 discloses a hydraulic control system for a gyratory crusher including a hydraulically supported main shaft. In this example, the crusher setting is adjusted by controlling the amount of hydraulic fluid pumped into the cylinder located at the lower end of the main shaft, which has a head cone mounted on it. The crusher frame can be moved upward or downward.
U.S. Pat. No. 4,927,089 US Pat. No. 6,129,297 German Patent No. 43 12 354 German Patent No. 43 08 272 Finnish Patent No. 96924

  The present invention has been made in view of the above points, and provides a method and apparatus for measuring and monitoring the setting of a crusher during pulverization, and a sensor for measuring the amount of corrosion of worn parts of the crusher. It is intended.

  In order to achieve the above object, according to the present invention, the method according to claim 1 and the method according to claim 3, wherein the setting of the crusher is measured and monitored during the pulverization process. An apparatus and a sensor for measuring the amount of corrosion of the worn parts of the crusher according to claims 9, 11 and 16 are provided.

  In the method according to the invention, the corrosion of the worn parts of the crusher is measured online during the operation of the crusher, so that the setting of the crusher can be controlled at a constant value regardless of the corrosion of the worn parts.

  Moreover, in the apparatus according to the present invention, the wear sensor mounted in the crusher can be used to monitor the wear of the worn parts of the crusher in real time. Further, measurement data indicating the degree of wear of the worn parts of the crusher is transmitted to the crusher alarm system or automatic control system. Further, the crusher setting adjusting means is provided with a sensor capable of measuring the relative position of the support surface of the worn parts of the crusher. Then, measurement data indicating the relative position between the support surfaces of the wear parts of the crusher is sent to the automatic control system of the crusher. Using the measurement data indicating the wear condition of these crusher wear parts and the measurement data indicating the relative position between the support surfaces of the crusher wear parts, the crusher automatic control system determines the position of the support surfaces of the crusher wear parts. The crusher setting can be kept constant regardless of the wear of the worn parts of the crusher.

  In the apparatus according to the present invention, information can be transmitted using wireless technology. In this case, the sensor for measuring the thickness of the worn part is provided with means for wirelessly transmitting information to the outside of the crusher, and is provided with means for receiving the transmitted information to an external control system. This type of sensor system includes an integrated power supply that generates the electrical energy required to operate the system, and the sensor system is contained within a self-contained component included in the crusher wear component. It may be arranged so that it can move with it. In this case, problems relating to information transmission and power supply can be handled.

  The power supply to the sensor can be performed using, for example, a battery. Alternatively, a device for converting kinetic energy into electrical energy may be used to generate sensor electricity from the movement of the worn parts of the crusher. For example, there is a wristwatch as a conventionally known one regarding such a configuration. Alternatively, the required electrical energy may be generated using a piezoelectric device, or may be generated using means such as RF technology that utilizes an electromagnetic field around the crusher, for example.

  The information collected by the device according to the invention, in its simplest configuration, is used as input information to the crusher alarm system so that the crusher operator will be alerted by this alarm system when the wear life of the crusher wear parts has expired. To get.

  One example of a sensor that can be used in the device of the present invention is to include a resistor network to be incorporated into the wear part of the crusher, which changes the resistance of the resistor network when the wear part is corroded. Some of them send measurement signals that change according to the amount of corrosion.

  By using the wear sensor, it is possible to measure a worn part in real time without performing a calibration operation. Further, it is possible to identify the crusher setting more accurately than in the prior art based on the degree of wear of the worn parts calculated from the wear measurement data. At the same time, monitoring the wear of worn parts of the crusher (eg, as a percentage) makes it possible to estimate the rate of wear and ensure that it is replaced at the end of the useful life of the worn part. Finnish Patent Application No. 20010673 discloses a data collection system suitable for automatically ordering replacement of worn parts based on information obtained from sensors. .

  Further, the wear of the worn parts of the crusher can be monitored using acoustic means (acoustic means) such as an ultrasonic sensor. In this case, the amount of corrosion can be detected using the reflection characteristics of the outer surface of the worn part.

  Yet another example is the use of a strain gauge as a sensor, where the amount of corrosion can be determined using deformation of the worn parts due to corrosion.

  By using the wear monitor and control system according to the present invention, the setting of the crusher can be kept constant, so that the quality of the final product of the crusher can be kept constant. This system is easier to handle than prior art configurations, and the operator can quickly and safely obtain wear information without having to climb on the crusher. Moreover, measurement can be performed continuously without stopping the operation at all. This allows the wear parts of the crusher to be used “up to the last inch” without the risk of running out of wear parts and causing damage to the crusher. In addition, the user can optimally use the spare parts according to the present invention by configuring a spare parts automatic ordering system based on information sent from the system. Furthermore, the variety of corrosion of the supplied material can prevent unexpected problems.

  More characteristically, the method according to the invention is configured as described in the characterizing part of claim 1 of the patent application as filed, and the device according to the invention is characterized in claim 3. Further, the wear sensor and wear sensor device according to the present invention are configured as described in the characterizing part of claims 9, 11 and 16.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
Referring to FIG. 1, a lower frame 1, an upper frame 2, a main shaft 3, a support cone 4, an outer liner 5, an inner liner 6, a crushing chamber (crushing chamber) 7, a drive shaft 8, an eccentric shaft 9, and a control cylinder piston. The main components of the crusher including 10 are shown.

  The crusher frame is composed of two main units, namely a lower frame 1 and an upper frame 2. The upper liner 5 attached to the upper frame forms a crushing chamber 7 so as to work with the lower liner attached via the support cone 4 on the main shaft 3, and is supplied from above the crusher. The material to be crushed can be crushed.

  The lower frame is provided with a drive shaft 8 so that the eccentric shaft 9 can be operated. Further, a bore is formed in the eccentric shaft so as to be inclined with respect to the central axis of the crusher chamber, and the main shaft 3 is attached to this bore. When the eccentric shaft is rotated by the drive shaft inside the crusher frame, the main shaft mounted in the bore of the eccentric shaft performs a vibrating motion.

  The crusher setting 11 set as the minimum relative distance between the outer liner and the inner liner can be adjusted by pumping a hydraulic medium into the cavity between the setting control piston 10 and the lower frame 1.

  The relative position of the support surface (support surface) of the crusher liner can be monitored using the setting sensor 14, which is done by determining the height of the control piston 10 relative to the lower frame 1. . By obtaining this setting, the position of the support cone 4 acting as the support surface of the inner liner 6 with respect to the upper frame 2 acting as the support surface of the outer liner 5 can be determined by applying a mathematical method. . Referring to the accompanying figures, wear sensors 12, 13 placed at the liner position monitor the wear parts for corrosion. The measurement signals sent from these sensors are sent to the crusher setting control system, which will be described in detail below with reference to FIG.

  Next, referring to FIG. 2, the frame 14, the bowl 15, the main shaft 3, the support cone 4, the outer liner 5, the inner liner 6, the crushing chamber 7, the drive shaft 8, the eccentric shaft 9, the control motor 16, and the setting adjustment. The main components of the crusher structure including the ring 17 are shown. At this time, the outer liner is mounted on a bowl that acts as a support surface for the outer liner, and the inner liner is mounted on a support cone that acts as a support surface for the inner liner. A lashing chamber is defined so that the material to be crushed inside is supplied from above the crusher.

  A drive shaft 8 for operating the eccentric shaft 9 is attached to the lower frame side. Further, a bore is formed in the eccentric shaft so that it is suitable for mounting the main shaft 3 fixed on the crusher frame. Then, by rotating the eccentric shaft using the drive shaft with respect to the main shaft of the crusher, the support cone attached in a bearing shape on the eccentric shaft is oscillated and moved.

  The crusher setting can be adjusted by rotating the bowl with the control motor, but the bowl moves up or down along the threads of the setting adjustment ring.

  Monitoring the relative position of the support surface of the crusher liner can be based on the number of revolutions by the control motor or the bowl itself, or directly from the height position of the bowl. Referring to the attached figures, wear sensors 12, 13 mounted on the crusher liner monitor the wear of worn parts. The measurement signals sent from these sensors are sent to the crusher setting control system together with the position signal of the support surface, which will be described in detail below with reference to FIG.

  Referring to FIG. 3, an impact crusher having a frame 18, a rotor 19, a rotor shaft 20, a breaker bar 21, a breaker plate 22, a breaker plate shaft 23, a breaker plate adjusting rod 24, and a breaker plate wear part 25 is shown. A rotor provided with a breaker bar is mounted on a crusher frame via a rotor shaft. The breaker plates are fixed to the crusher frame by a breaker plate shaft at one of these ends and are adjustable at the other end by a breaker plate adjusting rod. The surface of the breaker plate is covered with wear parts.

  In the operation of the impact crusher, the material to be crushed is fed into the crusher through an opening formed in the crusher frame 18, and the collected material is rolled onto the rotary breaker rotor 19. Or fall. The rotor is provided with a breaker bar 21 so that the material to be crushed can be fed to the breaker plate 22. Grinding the supplied material is done by colliding the material collected on the rotor breaker bar or on the breaker plate of the crusher frame or by colliding the collected materials with each other. If the last in the gap between the last breaker plate and rotor breaker bar in the transport direction of the collected material is still larger than the breaker gap setting when this point is reached, particles of these materials So that most of it is crushed. Referring to the figure, the impact crusher is equipped with three breaker plates, and the size of the material collected for crushing is broken up step by step in each of the breaker plates and the corresponding breaker plate gap setting and It has been reduced to an equal size. One end of the breaker plate is fixed to the crusher frame by a breaker plate shaft 23, and the other end of the breaker plate is attached via a breaker plate adjusting rod 24. The setting can be adjusted independently for each rod. The position of the last breaker plate in the conveying direction of the material to be crushed defines the last gap setting 11 of all crushers. Breaker plate wear parts 25 are provided on the outer surfaces of these breaker plates and act as breaker liners that cooperate with the breaker bar of the rotor.

  The crusher setting sensor 14 is mounted on the adjustment rod of the last breaker plate in the conveying direction of the material to be crushed, and controls the setting of the last gap of all the crushers. This sensor sends a setting signal for the adjustable support surface of the wear part, i.e. indicates the position of the breaker plate. The wear sensor (s) 12 for the wear parts of the breaker plate are mounted on the wear parts of the breaker that define the crusher settings. The wear sensor indicates the amount of corrosion that occurs on the worn parts of the crusher. Also, a wear sensor 13 mounted on the rotor breaker bar indicates the wear that has occurred on the rotor breaker bar. The measurement data sent from these sensors is sent to the crusher setting control system, which will be described in detail with reference to FIG.

  Referring to FIG. 4, there is shown a jaw crusher frame including a front frame 26, a rear frame 27, and a side plate 28 connecting the frames. At this time, the crushing cavity is defined by a fixed jaw 29 mounted on the front frame, and a movable jaw 30 connected to the pitman 31 of the jaw crusher and the side plate. The vibration of the pitman is performed by an eccentric shaft 32 which is eccentrically mounted in a bearing shape on both the pitman and the crusher side plates in cooperation with the flywheel 33. The flywheel 33 is attached to the eccentric shaft. It is driven by an external mechanism. The width of the jaw opening gap, known as crusher setting, is a setting adjustment via a toggle plate 34 that controls the crusher setting 11, which is the width of the gap between the lower end of the movable jaw and the fixed jaw. It is adjusted by changing the position of the wedge 35 for use.

  Wear sensors 12 and 13 are attached to the lower positions of both the fixed jaw and the movable jaw so that the measurement signal can be sent. Based on these, the crusher automatic control system 36 wears the jaw. Is being monitored. The crusher setting adjusting means is provided with a position sensor 14 so that the position information can be sent, and based on these, the distance from the support surface of the fixed jaw to the support surface of the movable jaw is determined by the automatic control system. To be able to decide. Based on the information sent from these sensors, the control system can determine the crusher's actual settings and the internal changes due to wear in real time, and based on these, the control system can maintain the crusher settings at a constant value. This is done by adjusting the setting adjustment wedge according to the detected jaw wear.

  Referring to FIG. 5, there is illustrated the structure of a wear sensor 37 that is incorporated into a monitored wear component 38, where it is shown that corrosion occurs on the surface, as shown by the arrows in the figure. Yes.

The wear sensor is comprised of a network of resistors 39 so that the resistors are corroded from the resistor network as the sensors wear as the wear parts being monitored are corroded. By connecting the insulated terminal of the resistor network to a constant voltage supply, the current through the resistor network can be calculated as follows: That is,
I = U / R, where
U = voltage, and
R = total resistance of the resistor network.

With corrosion of worn parts, the overall resistance of the sensor varies according to the following equation: That is,
1 / R = 1 / R ₁ + 1 / R ₂ + ... + 1 / R _n
At this time, the current passing through the sensor also changes. By obtaining the total resistance of the resistor network and this internally detected change along with the truncation of the network, it is possible to accurately determine the amount of wear part corrosion by measuring the current through the sensor.

  With respect to the function of the sensor shown in FIG. 5, it is very important to properly select the insulating material for the wear sensor. With regard to the selection of this insulating material, it is important to know the physical properties of the material supplied for grinding and the material of the wear part. Ideally, the insulation material of the sensor is selected to exhibit exactly the same corrosion characteristics as the wear part, and depending on the material supplied, both the wear part characteristics and the wear sensor incorporated therein are exactly the same. To be corroded at a rate of However, this is very difficult to implement because the wear sensor is always harder, more friable or softer and tends to have a lower wear resistance than the characteristics of the wear part. This is because there is a risk that the sensor is damaged / broken or the wear of the sensor proceeds faster.

  In situations where a very hard sensor is required, this insulating material may generally be selected from the group of ceramic materials, for example, one that is usually only suitable for hard coating of the surface may be used. One such coating is, for example, aluminum monoxide that has been thermally sprayed. Also, as a most advantageous choice under certain operating conditions, a ceramic insulator formed from oxide powder and bonded to a binder may be used. As a result, local breaks that occur in this type of sensor can be prevented from causing significant damage to the sensor. In other situations, a sensor formed using a resilient insulator material, such as a composite polymer material, may be used without primarily requiring a surface cured sensor.

  Also, regardless of the selected insulator material, it is always effective to make the sensor element thin, so that the impact inside the crusher / breaker breaks the sensor deeper than the corroded surface of the worn part. In other words, if the corrosion rate of a worn part is faster than the corrosion rate of a hard-surfaced sensor, the protrusion of the sensor is below the surface level of the worn part. Make sure it breaks immediately.

  Referring to FIG. 6, there is shown an embodiment in which a self-contained ultrasonic sensor 40 is applied in the wear part of a crusher. This type of sensor system can use only a single sensor by embedding the sensor at the most likely location of the wear part, or it can embed multiple sensors at the desired position of the wear part. You may do it. When using a self-contained ultrasonic sensor, wear with a threaded means (thread means) or with a separate sensor mounting base to be secured using a binding component. It is fixed to the back side of the part and joined so as to be orthogonal. In operation, the sensor emits an ultrasonic surface to the body of the wear part and is rebounded from the facing surface of the wear part so that the thickness of the wear part at the monitored location can be detected.

  Referring to FIG. 7, an example of placing another type of ultrasonic sensor on a worn part of a crusher is shown. At this time, an ultrasonic transmitter 41 is provided at one end of the wear part, and an ultrasonic receiver 42 is provided at the opposite end of the wear part. In this type of sensor configuration, intelligent sensors and algorithms programmed into the control system software may be combined to determine the narrowest point of material thickness between the sensors.

  Obviously, the ultrasonic sensors shown in FIGS. 6 and 7 can be replaced with other sensors based on the more recent, more advanced ultrasonic sensor technology. As one of these other sensor examples, there is a so-called MEMS technology and a sensor based on the so-called MEMS technology that detects acoustic emission (acoustic emission). This type of sensor can measure both material thickness and potentially undesirable phenomena that occur internally, such as cracks and permanent deformation.

  Furthermore, all of the sensors described above and other types of sensors used in the control system according to the present invention may be integrated with both the self-contained power supply and the RF transmitter. In this case, the sensor may be incorporated into a self-contained part that can send measurement signals wirelessly to a crusher control system located outside the crusher.

  Sensors of the above type are mounted outside the surface of the crusher wear part so that when replacing the wear part, the sensor can be quickly transferred onto the new wear part. In addition, a single sensor is sufficient to monitor multiple variables that characterize the usefulness of crusher wear parts.

  Referring to FIG. 8, there is shown an example in which a strain-gauge type wear sensor is provided on a wear part of a crusher. In this case, the use of the strain gauge element 43 as a wear sensor for the wear part of the crusher reduces the thickness of the wear part which causes only a small deformation. This is based on the fact that the rear side increases the convex part or concave part. This deformation can be detected with very high accuracy by using a strain gauge element having a sufficient length. Furthermore, the strain gauge element can simultaneously detect the load exerted on the worn part during grinding.

  Furthermore, the product identification technology may be quickly integrated into a measurement circuit based on a strain gauge sensor. In this case, the ID code of the wear part may be included in the microcontroller 44 or the like necessary for combining the strain gauge sensor for analysis of the measurement signal. This identification information can easily be sent along with the measurement data to the crusher's automatic control system, but this transmission may be via a wire or via a wireless connection. The ID circuit may be configured using a technique that can read the ID code using a portable scanner suitable for wirelessly responding at a distance of several meters from the crusher, for example. This ID information may be sent in a closed range using a Bluetooth circuit. Also, by using the latest technology, it is possible to package the sensor amplifier, ID code circuit and Bluetooth circuit in half the size of a credit card. Further, the identification information may be read by using a mobile phone (cellular phone) as a reader (reader), for example.

  By making it easy to retrieve the part identification information in this way, the crusher operator can substantially assist in determining and ordering the required spare parts according to this category and type.

  The wear part ID code may include additional information about the wear part that may be useful at a later stage in the life of the wear part. For example, the ID code may include information on the component of the metal alloy of the wear part that can be used when the wear part is recycled. Other similar examples of this information include, for example, the size and weight of wear parts, and other similar data.

  Referring to FIG. 9, an example of the installation of a strain-gauge type wear sensor operated as a fully self-contained part is shown. The sensor components include a strain gauge sensor 43, an energy capture antenna 45, an integrated intelligent sensor circuit 44, and an RF antenna 46.

  Measurement data obtained from the strain gauge sensor 43 is collected by the intelligent sensor circuit 44 so that the collected information can be sent wirelessly via the RF antenna 46 to a crusher control system provided outside the crusher. ing. The operating energy of the integrated sensor package is taken using the antenna 45 from the electromagnetic field around the crusher unit. The functions of the intelligent sensor circuit include conditioning of operation energy captured by the antenna, processing of measurement data obtained from the strain gauge sensor, and transmission of processing information via the RF antenna. In addition, the intelligent sensor circuit is programmed to include a unique ID code for the wear part.

  In this case, an integrated sensor component may be constructed in a single self-adhesive tag by combining strain-gauge technology with radio frequency (RF) technology. The unit of the sensor assembly may be configured using a separate block that is attached to the rear surface of the wear part using an adhesive. Then, after mounting, this separate block may be connected to a common intelligent sensor circuit.

  By mounting a sensor assembly of the type described above on the back side of the crusher's opposing wear parts, it is possible to send important information to the crusher control system to determine the exact setting of the crusher, The crusher may be controlled to maintain the crusher setting at a desired value regardless of the corrosion of the part.

  The present invention is not limited to the type of crusher, and can be applied to all types of crushers provided with wear parts.

  Further, the present invention is not limited to the sensor configuration described above, and the crusher adjustment and control system according to the present invention utilizes all types of sensors that can send sufficient information as an input signal to the control system. be able to.

1 is a view showing a typical crusher in the prior art equipped with a wear sensor according to the present invention. FIG. 1 shows a cone crusher typical in the prior art with a wear sensor according to the present invention. FIG. FIG. 2 is a diagram showing a typical impact crusher in the prior art equipped with a wear sensor according to the present invention. 1 shows a jaw crusher typical in the prior art with a control system according to the invention. FIG. It is a figure which shows the structural example of the wear part of the wear sensor which concerns on this invention. It is a figure which shows the example which has arrange | positioned the ultrasonic sensor in the wear part of a crusher. It is a figure which shows the example which has arrange | positioned the ultrasonic sensor in the wear part of a crusher. It is a figure which shows the example which has arrange | positioned the strain gauge sensor in the wear part of a crusher. It is a figure which shows the example which has arrange | positioned the strain gauge sensor in the wear part of a crusher.

Explanation of symbols

3 Main shaft 4 Support cone 5 Outer liner 6 Inner liner 7 Crushing chamber 8 Drive shaft 9 Eccentric shaft 10 Cylinder piston for control 11 Crusher setting 12, 13 Wear sensor 15 Bowl 16 Control motor 17 Setting adjustment ring 19 Rotor 20 Rotor shaft 21 Breaker bar 22 Breaker plate 23 Breaker plate shaft 24 Breaker plate adjusting rod 25 Breaker plate wear parts 29 Fixed jaw 30 Movable jaw 31 Pitman 33 Flywheel 34 Automatic control system

Claims (19)

  This is a method for measuring and monitoring the setting of the crusher during the crushing process, measuring the corrosion of the worn parts of the crusher, and adjusting the setting of the crusher based on the measurement result to prevent corrosion of the worn parts. Regardless of the method, the setting is maintained at a predetermined value, and in particular, measurement data indicating the amount of corrosion of the worn parts of the crusher is wirelessly transmitted to the outside of the crusher.   2. The method of claim 1, wherein an order for replacement of the worn part is automatically placed as soon as measured data indicative of the amount of corrosion of the worn part reaches a predetermined threshold.   A device for measuring and monitoring the setting of a crusher during crushing, on at least one wear sensor mounted on a crusher liner, means for adjusting the setting of the crusher, and means for adjusting the setting of the crusher At least one sensor mounted on the crusher, wherein the crusher automatic control system is obtained from a wear sensor mounted on at least one liner of the crusher. A first input signal suitable for determining the amount of corrosion of the crusher, and obtained from the sensor mounted on the setting adjustment means of the crusher, of a support surface of the wear part of the crusher To receive a second input signal suitable for determining the relative position The crusher automatic control system can adjust the crusher setting to keep the crusher setting at a predetermined value regardless of the corrosion of the worn parts, based on both of the input signals, An apparatus comprising: means for attaching at least one sensor for measuring wear to each of the crusher liners, and wirelessly transmitting the measurement data to the outside of the crusher.   4. The apparatus of claim 3, wherein the automatic control system of the crusher comprises means for receiving the data sent wirelessly.   5. A device according to claim 3 or 4, characterized in that the sensor is provided with means for generating the electrical energy required to operate the sensor.   6. The apparatus of claim 5, wherein the means for generating electrical energy required to operate the sensor includes an element suitable for converting kinetic energy into electrical energy.   6. The apparatus of claim 5, wherein the means for generating electrical energy required to operate the sensor comprises a piezoelectric device.   6. The apparatus of claim 5, wherein the means for generating electrical energy required to operate the sensor includes means for generating energy from an electromagnetic field around the crusher.   A sensor that can be used in the apparatus according to any one of claims 3 to 8 to measure the amount of corrosion of a worn part of a crusher, and more particularly, a plurality of sensors provided in parallel with a worn part of the sensor. A resistor network formed from a resistor of the resistor, wherein the resistor is disconnected from the resistor network by corrosion as the wear parts of the crusher corrode, so that the total resistance of the circuit that sends current to the wear sensor And a measurement signal proportional to the amount of corrosion of the worn parts.   A sensor that can be used in the apparatus according to any one of claims 3 to 8 to measure the amount of corrosion of the worn parts of the crusher, in particular provided in series with the wear part of the sensor. A resistor network formed from a plurality of resistors, wherein the resistors are disconnected from the resistor network by corrosion as the wear parts of the crusher corrode, so that the entire circuit for sending current to the wear sensor is provided. A sensor characterized in that the resistance is varied to produce a measurement signal proportional to the amount of corrosion of the worn parts.   A sensor that can be used in the apparatus according to any one of claims 3 to 8 to measure the amount of corrosion of worn parts of a crusher, and in particular, the sensor uses acoustic waves, Sensor.   The sensor according to claim 11, wherein the sensor is an ultrasonic sensor.   The sensor according to claim 11, wherein MEMS technology is used for a sensor configuration.   The sensor according to claim 13, wherein the sensor is a sensor that detects sound emission.   The sensor according to any one of claims 11 to 14, wherein the sensor further includes means for emitting an impulse for the sensor and means for receiving the sensor.   A sensor that can be used in the apparatus according to any of claims 3 to 8 for measuring the amount of corrosion of worn parts of a crusher, in particular characterized in that the sensor is based on a strain gauge element. Sensor.   The sensor according to claim 16, wherein the sensor can measure a load exerted on the worn part during crushing.   18. Sensor according to claim 16 or 17, characterized in that the sensor comprises means for sending identification data of the worn part and wirelessly. 19. A sensor according to any one of claims 16 to 18, wherein RF technology is used to implement at least a part of the sensor element.

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