Crusher operation monitoring methods, control devices and crushers

Abstract

This invention relates to the field of machinery technology, providing a crusher operation monitoring method, control device, and crusher. The crusher operation monitoring method includes the following steps: stopping the machine to inspect and repair the first expansion sleeve if the rotational speed of the driven pulley and the rotational speed of the rotating shaft remain unequal for a first preset time period; or, stopping the machine to inspect and repair the first expansion sleeve if the rotational speed of the driven pulley and the rotational speed of the rotating shaft repeatedly become unequal for a second preset time period. Through this monitoring method, the state of the first expansion sleeve connected between the driven pulley and the rotating shaft can be monitored in real time based on the rotational speeds of the driven pulley and the rotating shaft during crusher operation. When a potential malfunction of the first expansion sleeve occurs, it can be detected promptly and the machine can be stopped for inspection and repair, thereby improving the safety and reliability of crusher operation and effectively preventing dangerous accidents.

Description

Technical Field

[0001] This invention relates to the field of machinery technology, and in particular to a method for monitoring the operation of a crusher, a control device, and a crusher. Background Technology

[0002] The impact crusher is a new type of high-efficiency crushing equipment. It contains a rotor that is driven by a drive unit to rotate and crush materials. Currently, the internal structure of the crusher is typically inspected manually at regular intervals to improve its safety and reliability. However, this method cannot monitor the crusher's operating status, and if a malfunction occurs during operation and is not detected in time, it can easily lead to dangerous accidents. Summary of the Invention

[0003] This invention provides a method, control device, and crusher for monitoring the operating status of a crusher, in order to solve or improve the problem that the existing technology cannot monitor the operating status of the crusher, and that when a fault occurs in the crusher during operation and is not detected in time, it can easily lead to dangerous accidents.

[0004] According to a first aspect of the present invention, a method for monitoring the operating status of a crusher is provided, comprising the following steps:

[0005] Based on the fact that the speed of the driven pulley and the speed of the rotating shaft remain unequal for a first preset time period, the machine is stopped for maintenance of the first expansion sleeve.

[0006] Alternatively, if the rotational speed of the driven pulley and the rotational speed of the rotating shaft are not equal multiple times within a second preset time period, the machine is stopped for maintenance of the first expansion sleeve.

[0007] According to a method for monitoring the operating status of a crusher provided by the present invention, the method further includes:

[0008] Based on the fact that the rotational speed of the rotating shaft and the rotational speed of the rotor body remain unequal for a third preset time period, the machine is stopped for maintenance of the second expansion sleeve.

[0009] Alternatively, if the rotational speed of the rotating shaft and the rotational speed of the rotor body are not equal multiple times within a fourth preset time period, the second expansion sleeve is stopped for maintenance.

[0010] According to a crusher operation status monitoring method provided by the present invention, based on the state that the speed ratio between the driven pulley and the rotating shaft is greater than (1+a%), it is determined that the speed of the driven pulley and the speed of the rotating shaft are not equal, wherein a≥5.

[0011] According to a crusher operation status monitoring method provided by the present invention, based on the state that the speed ratio between the rotating shaft and the rotor body is greater than (1+b%), it is determined that the speed of the rotating shaft and the speed of the rotor body are not equal, wherein b≥5.

[0012] According to a method for monitoring the operating status of a crusher provided by the present invention, the method further includes:

[0013] Based on the reduced rotational speed of the driven pulley, the actual transmission ratio between the driving pulley and the driven pulley is equal to the preset transmission ratio, and the rotational speed of the driven pulley is equal to the rotational speed of the rotating shaft, and the rotational speed of the rotating shaft is equal to the rotational speed of the rotor body, the feed speed of the crusher is automatically reduced so that the driven pulley can return to its original rotational speed.

[0014] According to a method for monitoring the operating status of a crusher provided by the present invention, the method further includes:

[0015] When the speed of the driven pulley repeatedly decreases by c% of the original speed within a fifth preset time period, the actual transmission ratio between the driving pulley and the driven pulley is equal to the preset transmission ratio, and the speed of the driven pulley is equal to the speed of the rotating shaft, and the speed of the rotating shaft is equal to the speed of the rotor body, the rotor body is stopped for maintenance, where c ≥ 60.

[0016] According to a method for monitoring the operating status of a crusher provided by the present invention, the method further includes:

[0017] If the actual transmission ratio between the driving pulley and the driven pulley is greater than (1+d%) of the preset transmission ratio, the driving pulley, the driven pulley, and the transmission belt shall be stopped for maintenance, wherein d≥10.

[0018] According to a method for monitoring the operating status of a crusher provided by the present invention, the method further includes:

[0019] Based on the condition that the actual transmission ratio between the driving pulley and the driven pulley is equal to the preset transmission ratio, and the rotational speed of the driven pulley is equal to the rotational speed of the rotating shaft, and the rotational speed of the rotating shaft is equal to the rotational speed of the rotor body, it is determined that the crusher is in normal operating condition.

[0020] According to a second aspect of the present invention, a crusher operation status monitoring and control device is provided, comprising:

[0021] A speed detection unit is used to detect the speed of the driving pulley, the driven pulley, the rotating shaft, and the rotor.

[0022] A control unit is configured to execute the crusher operation monitoring method described above based on the detection results of the speed detection unit.

[0023] According to a third aspect of the present invention, a crusher is provided, which monitors its operating status using the crusher operation monitoring method described above, or includes the crusher operation monitoring and control device described above.

[0024] In the crusher operation status monitoring method provided by this invention, the first expansion sleeve is shut down for maintenance if the speed of the driven pulley and the speed of the rotating shaft remain unequal for a first preset time period; or, if the speed of the driven pulley and the speed of the rotating shaft are unequal multiple times within a second preset time period. Specifically, the driven pulley is connected to the rotating shaft through the first expansion sleeve, and the driven pulley can drive the rotating shaft to rotate. Under normal operating conditions, the speed of the driven pulley and the speed of the rotating shaft should be equal. When the speed of the driven pulley and the speed of the rotating shaft remain unequal for a first preset time period, or when the speed of the driven pulley and the speed of the rotating shaft are unequal multiple times within a second preset time period, it indicates that the first expansion sleeve connecting the driven pulley and the rotating shaft may be faulty. In this case, the first expansion sleeve is shut down for maintenance.

[0025] This monitoring method allows for real-time monitoring of the status of the first expansion sleeve connecting the driven pulley and the rotating shaft during crusher operation, based on the rotational speed of the driven pulley and the rotating shaft. When a potential malfunction occurs in the first expansion sleeve, it can be detected promptly, allowing for timely shutdown and maintenance. This improves the safety and reliability of the crusher's operation and effectively prevents dangerous accidents. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this invention or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a flowchart of the crusher operation monitoring method provided by the present invention;

[0028] Figure 2 This is a simplified structural diagram of the crusher provided by the present invention;

[0029] Figure 3 This is a schematic diagram of the connection structure of the driven pulley, rotating shaft, rotor body, first expansion sleeve and second expansion sleeve in the crusher provided by the present invention;

[0030] Figure label:

[0031] 100, Rotor body; 200, Rotating shaft; 300, Driving pulley; 400, Driven pulley; 500, Transmission belt; 600, Drive unit; 700, First expansion sleeve; 800, Second expansion sleeve; 900, Control unit. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0035] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] The following is combined Figures 1 to 3 This invention describes a crusher operation monitoring method, control device, and crusher. It should be understood that the following description is merely an illustrative embodiment of the invention and does not constitute any particular limitation on the invention.

[0038] An embodiment of the first aspect of the present invention provides a method for monitoring the operation of a crusher, such as... Figure 1 As shown, it includes the following steps:

[0039] Based on the fact that the rotational speed of the driven pulley 400 and the rotational speed of the rotating shaft 200 remain unequal for a first preset time period, the machine is stopped for maintenance of the first expansion sleeve 700.

[0040] Alternatively, if the speed of the driven pulley 400 and the speed of the rotating shaft 200 are not equal multiple times within a second preset time period, the machine is stopped for maintenance of the first expansion sleeve 700.

[0041] like Figure 2 and Figure 3 As shown, the crusher includes a rotor body 100, a rotating shaft 200, a driving pulley 300, a driven pulley 400, a transmission belt, a first expansion sleeve 700, and a second expansion sleeve 800. The driving pulley 300 is connected to the driven pulley 400 via the transmission belt. The driven pulley 400 is connected to the rotating shaft 200 via the first expansion sleeve 700, and the rotating shaft 200 is connected to the rotor body 100 via the second expansion sleeve 800. A drive device 600, such as a motor or engine, is connected to the driving pulley 300 to drive its rotation. The driving pulley 300 drives the driven pulley 400 to rotate via the transmission belt. The driven pulley 400 drives the rotating shaft 200 to rotate via the first expansion sleeve 700. The rotating shaft 200 drives the rotor body 100 to rotate via the second expansion sleeve 800, thereby crushing materials.

[0042] In the crusher operation status monitoring method provided by this invention, the first expansion sleeve 700 is stopped for maintenance if the rotational speed of the driven pulley 400 and the rotational speed of the rotating shaft 200 remain unequal for a first preset time period; or, the first expansion sleeve 700 is stopped for maintenance if the rotational speed of the driven pulley 400 and the rotational speed of the rotating shaft 200 are unequal multiple times for a second preset time period. Specifically, the driven pulley 400 is connected to the rotating shaft 200 through the first expansion sleeve 700, and the driven pulley 400 can drive the rotating shaft 200 to rotate. Under normal operating conditions, the rotational speed of the driven pulley 400 should be equal to the rotational speed of the rotating shaft 200. When the speed of the driven pulley 400 and the speed of the rotating shaft 200 remain unequal for a first preset time period, or when the speed of the driven pulley 400 and the speed of the rotating shaft 200 are unequal multiple times for a second preset time period, it indicates that the first expansion sleeve 700 connected between the driven pulley 400 and the rotating shaft 200 may be faulty. In this case, the machine should be stopped and the first expansion sleeve 700 should be inspected.

[0043] This monitoring method allows for real-time monitoring of the status of the first expansion sleeve 700, connected between the driven pulley 400 and the rotating shaft 200, based on the rotational speed of the driven pulley 400 and the rotating shaft 200 during crusher operation. When a potential malfunction occurs in the first expansion sleeve 700, it can be detected promptly, allowing for timely shutdown and maintenance. This improves the safety and reliability of the crusher's operation and effectively prevents dangerous accidents.

[0044] In one embodiment of the present invention, the crusher operation monitoring method further includes:

[0045] Based on the fact that the rotational speed of the rotating shaft 200 and the rotational speed of the rotor body 100 remain unequal for a third preset time period, the machine is stopped for maintenance of the second expansion sleeve 800.

[0046] Alternatively, if the rotational speed of the rotating shaft 200 and the rotational speed of the rotor body 100 are not equal multiple times within a fourth preset time period, the machine is stopped for maintenance of the second expansion sleeve 800.

[0047] Specifically, the rotating shaft 200 is connected to the rotor body 100 via the second expansion sleeve 800, and the rotating shaft 200 can drive the rotor body 100 to rotate. Under normal operating conditions, the rotational speed of the rotating shaft 200 should be equal to the rotational speed of the rotor body 100. If the rotational speed of the rotating shaft 200 and the rotational speed of the rotor body 100 remain unequal for a third preset time period, or if the rotational speed of the rotating shaft 200 and the rotational speed of the rotor body 100 are unequal multiple times within a fourth preset time period, it indicates that the second expansion sleeve 800 connecting the rotating shaft 200 and the rotor body 100 may be faulty. In this case, the machine should be stopped and the second expansion sleeve 800 should be inspected and repaired.

[0048] Through the embodiments described above, during the operation of the crusher, the status of the second expansion sleeve 800 connected between the rotating shaft 200 and the rotor body 100 can be monitored in real time based on the rotational speed of the rotating shaft 200 and the rotor body 100. When the second expansion sleeve 800 may malfunction, it can be detected in time and the machine can be stopped for maintenance, thereby improving the safety and reliability of the crusher operation and effectively avoiding the occurrence of dangerous accidents.

[0049] For example, the first and third preset durations are both 20 seconds, and the second and fourth preset durations are both 10 seconds.

[0050] When the speed of the driven pulley 400 and the speed of the rotating shaft 200 remain unequal for 20 seconds, or when the speed of the driven pulley 400 and the speed of the rotating shaft 200 are unequal more than 3 times within 10 seconds, it indicates that the first expansion sleeve 700 connected between the driven pulley 400 and the rotating shaft 200 may have failed. Continuous operation will cause damage to the rotor body 100. At this time, the machine should be stopped and the first expansion sleeve 700 should be inspected and repaired.

[0051] Similarly, if the rotational speed of the rotating shaft 200 and the rotational speed of the rotor body 100 remain unequal for 20 seconds, or if the rotational speed of the rotating shaft 200 and the rotational speed of the rotor body 100 are unequal more than 3 times within 10 seconds, it indicates that the second expansion sleeve 800 connected between the rotating shaft 200 and the rotor body 100 may have failed. Continuous operation will cause damage to the rotor body 100. At this time, the machine should be stopped and the second expansion sleeve 800 should be inspected and repaired.

[0052] It should be noted that the above embodiments are merely illustrative embodiments of the present invention and do not constitute any limitation on the present invention. The first preset duration, the second preset duration, the third preset duration, the fourth preset duration, the frequency of occurrence of unequal rotational speeds between the driven pulley 400 and the rotating shaft 200 within the second preset duration, and the frequency of occurrence of unequal rotational speeds between the rotating shaft 200 and the rotor body 100 within the fourth preset duration can all be determined according to actual needs.

[0053] In one embodiment of the present invention, based on the state that the speed ratio between the driven pulley 400 and the rotating shaft 200 is greater than (1+a%), it is determined that the speed of the driven pulley 400 is not equal to the speed of the rotating shaft 200, wherein a≥5.

[0054] Furthermore, in one embodiment of the present invention, based on the state that the speed ratio between the rotating shaft 200 and the rotor body 100 is greater than (1+b%), it is determined that the speed of the rotating shaft 200 and the speed of the rotor body 100 are not equal, wherein b≥5.

[0055] To avoid misjudging the crusher's operating status due to detection errors during speed detection, this crusher operation monitoring method has redefined the criteria for determining whether the speed of the driven pulley 400 is unequal to the speed of the rotating shaft 200, and whether the speed of the rotating shaft 200 is unequal to the speed of the rotor body 100. Specifically, when the speed ratio between the driven pulley 400 and the rotating shaft 200 is greater than or equal to 1, and the speed ratio between the driven pulley 400 and the rotating shaft 200 is less than or equal to (1+a%), it is determined that the driven pulley 400 and the rotating shaft 200 are rotating at the same speed. Similarly, when the speed ratio between the rotating shaft 200 and the rotor body 100 is greater than or equal to 1, and the speed ratio between the rotating shaft 200 and the rotor body 100 is less than or equal to (1+b%), it is determined that the rotating shaft 200 and the rotor body 100 are rotating at the same speed. When the speed ratio between the driven pulley 400 and the rotating shaft 200 is greater than (1+a%), it is determined that the driven pulley 400 and the rotating shaft 200 are rotating at different speeds. Similarly, when the speed ratio between the rotating shaft 200 and the rotor body 100 is greater than (1+b%), it is determined that the rotating shaft 200 and the rotor body 100 are rotating at different speeds.

[0056] For example, if a and b are both 5, and the above-described operation monitoring method is used, if the speed ratio between the driven pulley 400 and the rotating shaft 200 remains greater than (1+5%) for 20 seconds during crusher operation, it indicates that the first expansion sleeve 700 connecting the driven pulley 400 and the rotating shaft 200 may have failed. Alternatively, if the speed ratio between the driven pulley 400 and the rotating shaft 200 is greater than (1+5%) more than three times within 10 seconds, it indicates that the first expansion sleeve 700 connecting the driven pulley 400 and the rotating shaft 200 may have failed.

[0057] If the speed ratio between the rotating shaft 200 and the rotor body 100 remains greater than (1+5%) for 20 seconds, it indicates that the second expansion sleeve 800 connecting the rotating shaft 200 and the rotor body 100 may have failed. Alternatively, if the speed ratio between the rotating shaft 200 and the rotor body 100 is greater than (1+5%) more than three times within 10 seconds, it indicates that the first expansion sleeve 700 connecting the rotating shaft 200 and the rotor body 100 may have failed.

[0058] In one embodiment of the present invention, the crusher operation monitoring method further includes:

[0059] Based on the reduced speed of the driven pulley 400, the actual transmission ratio between the driving pulley 300 and the driven pulley 400 is equal to the preset transmission ratio, and the speed of the driven pulley 400 is equal to the speed of the rotating shaft 200 and the speed of the rotating shaft 200 is equal to the speed of the rotor body 100. The feed speed of the crusher is automatically reduced so that the driven pulley 400 can return to its original speed.

[0060] Under normal operating conditions, the actual transmission ratio between the driving pulley 300 and the driven pulley 400 is equal to the preset transmission ratio, and the rotational speed of the driven pulley 400 is equal to the rotational speed of the rotating shaft 200, which in turn is equal to the rotational speed of the rotor 100. During normal operation, if the rotational speed of the driven pulley 400 suddenly decreases, it indicates a sudden increase in the load on the rotor 100. In this case, to reduce the load on the rotor 100, the feed rate of the crusher is controlled to decrease until the driven pulley 400 returns to its original rotational speed.

[0061] In another embodiment of the present invention, the crusher operation monitoring method further includes:

[0062] Based on the condition that the speed of the driven pulley 400 repeatedly decreases by c% within the fifth preset time period, the actual transmission ratio between the driving pulley 300 and the driven pulley 400 is equal to the preset transmission ratio, and the speed of the driven pulley 400 is equal to the speed of the rotating shaft 200, and the speed of the rotating shaft 200 is equal to the speed of the rotor body 100, the rotor body 100 is stopped for maintenance, where c≥60.

[0063] Alternatively, if the driven pulley 400 experiences multiple sudden and significant drops in speed during normal operation of the crusher, it indicates that the material has subjected the rotor 100 to multiple strong impacts, potentially causing impact damage or cracking. In this case, the machine should be stopped and the rotor 100 inspected to confirm whether it has cracked or broken.

[0064] More specifically, for example, if the driven pulley experiences a 60% speed drop within 0.5 seconds more than 400 times during normal operation of the crusher, the machine should be stopped for maintenance of the rotor body 100.

[0065] It should be noted that the fifth preset duration is extremely short, and its specific value can be determined according to actual needs. The value of c can also be determined according to actual needs.

[0066] In one embodiment of the present invention, the crusher operation monitoring method further includes:

[0067] When the actual transmission ratio between the driving pulley 300 and the driven pulley 400 is greater than the preset transmission ratio by (1+d%), the driving pulley 300, the driven pulley 400 and the transmission belt are shut down for maintenance, where d≥10.

[0068] For example, d = 10. During crusher operation, if the actual transmission ratio between the driving pulley 300 and the driven pulley 400 exceeds (1 + 10%) times the preset transmission ratio, it indicates that the transmission belt may be loose or partially broken, or that either the driving pulley 300 or the driven pulley 400 may be malfunctioning. In this case, the machine should be stopped for inspection and repair of the driving pulley 300, the driven pulley 400, and the transmission belt to ensure the safe operation of the crusher.

[0069] In one embodiment of the present invention, the crusher operation monitoring method further includes:

[0070] Based on the condition that the actual transmission ratio between the driving pulley 300 and the driven pulley 400 is equal to the preset transmission ratio, and the rotational speed of the driven pulley 400 is equal to the rotational speed of the rotating shaft 200, and the rotational speed of the rotating shaft 200 is equal to the rotational speed of the rotor body 100, the crusher is determined to be in normal operating condition. In this condition, the crusher can continuously operate to crush materials normally.

[0071] A second aspect of the present invention provides a crusher operation monitoring and control device, comprising:

[0072] The speed detection unit is used to detect the speed of the driving pulley 300, the driven pulley 400, the rotating shaft 200 and the rotor body 100;

[0073] Control unit 900 is used to execute the crusher operation monitoring method as described above based on the detection results of the speed detection unit.

[0074] For example, the speed detection unit includes a first speed measuring gear ring, a first speed sensor, a second speed measuring gear ring, a second speed sensor, a third speed measuring gear ring, a third speed sensor, a fourth speed measuring gear ring, and a fourth speed sensor. The first speed measuring gear ring is connected to the driving pulley 300, the second speed measuring gear ring is connected to the driven pulley 400, the third speed measuring gear ring is connected to the rotating shaft 200, and the fourth speed measuring gear ring is connected to the rotor body 100. The first speed sensor, the second speed sensor, the third speed sensor, and the fourth speed sensor are all fixed to the frame of the crusher. The first speed sensor is correspondingly set with the first speed measuring gear ring to detect the speed of the driving pulley 300; the second speed sensor is correspondingly set with the second speed measuring gear ring to detect the speed of the driven pulley 400; the third speed sensor is correspondingly set with the third speed measuring gear ring to detect the speed of the rotating shaft 200; and the fourth speed sensor is correspondingly set with the fourth speed measuring gear ring to detect the speed of the rotor body 100. The control unit 900 is connected to the first speed sensor, the second speed sensor, the third speed sensor and the fourth speed sensor to receive the detection results of the first speed sensor, the second speed sensor, the third speed sensor and the fourth speed sensor and execute the above monitoring method.

[0075] Furthermore, the crusher operation monitoring and control device may also include an alarm unit and a fault display unit. When the crusher requires maintenance, the control unit 900 can control the crusher to stop operating, or in other words, control the motor or engine to stop. Simultaneously, it triggers the alarm unit to sound an alarm and displays the specific fault type in the fault display unit. For example, if the speed of the driven pulley 400 is continuously unequal to the speed of the rotating shaft 200 within 20 seconds, or if the speed of the driven pulley 400 is unequal to the speed of the rotating shaft 200 more than three times within 10 seconds, the control unit 900 controls the crusher to stop operating, triggers the alarm unit to sound an alarm, and displays a fault in the first expansion sleeve 700 in the fault display unit.

[0076] An embodiment of the third aspect of the present invention provides a crusher that monitors its operating status using the crusher operation monitoring method described above, or includes the crusher operation monitoring and control device described above.

[0077] In addition, such as Figure 2 and Figure 3As shown, the crusher also includes a rotor body 100, a rotating shaft 200, a driving pulley 300, a driven pulley 400, a transmission belt, a first expansion sleeve 700, and a second expansion sleeve 800. The driving pulley 300 is connected to the driven pulley 400 via the transmission belt. The driven pulley 400 is connected to the rotating shaft 200 via the first expansion sleeve 700, and the rotating shaft 200 is connected to the rotor body 100 via the second expansion sleeve 800. A drive device 600, such as a motor or engine, is connected to the driving pulley 300 to drive its rotation. The driving pulley 300 drives the driven pulley 400 to rotate via the transmission belt. The driven pulley 400 drives the rotating shaft 200 to rotate via the first expansion sleeve 700. The rotating shaft 200 drives the rotor body 100 to rotate via the second expansion sleeve 800, thereby crushing materials.

[0078] In one embodiment of the present invention, the crusher described above includes an impact crusher.

[0079] It should be noted that the above embodiments are merely illustrative examples of the present invention and do not constitute any limitation on the present invention. That is, the above-described crusher includes, but is not limited to, impact crushers. Other crushers that monitor their operating status using the crusher operation monitoring method described above, or that include the crusher operation monitoring and control device described above, should all be within the protection scope of the present invention.

[0080] Furthermore, in the crusher provided by the present invention, since it monitors the operating status using the crusher operation monitoring method described above, it also possesses the advantages described above.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for monitoring the operation of a crusher, characterized in that, Includes the following steps: Based on the fact that the speed of the driven pulley and the speed of the rotating shaft remain unequal for a first preset time period, the machine is stopped for maintenance of the first expansion sleeve. Alternatively, if the rotational speed of the driven pulley and the rotational speed of the rotating shaft are not equal multiple times within a second preset time period, the machine shall be stopped and the first expansion sleeve shall be inspected. Based on the state that the speed ratio between the driven pulley and the rotating shaft is greater than 1+a%, it is determined that the speed of the driven pulley and the speed of the rotating shaft are not equal, where a≥5; The crusher operation monitoring method also includes: Based on the condition that the actual transmission ratio between the driving pulley and the driven pulley is equal to the preset transmission ratio, and the rotational speed of the driven pulley is equal to the rotational speed of the rotating shaft, and the rotational speed of the rotating shaft is equal to the rotational speed of the rotor body, it is determined that the crusher is in normal operating condition.

2. The crusher operation monitoring method according to claim 1, characterized in that, The crusher operation monitoring method also includes: Based on the fact that the rotational speed of the rotating shaft and the rotational speed of the rotor body remain unequal for a third preset time period, the machine is stopped for maintenance of the second expansion sleeve. Alternatively, if the rotational speed of the rotating shaft and the rotational speed of the rotor body are not equal multiple times within a fourth preset time period, the second expansion sleeve is stopped for maintenance.

3. The crusher operation monitoring method according to claim 1, characterized in that, Based on the state that the speed ratio between the rotating shaft and the rotor body is greater than 1+b%, it is determined that the speed of the rotating shaft and the speed of the rotor body are not equal, where b≥5.

4. The crusher operation monitoring method according to claim 3, characterized in that, The crusher operation monitoring method also includes: Based on the reduced rotational speed of the driven pulley, the actual transmission ratio between the driving pulley and the driven pulley is equal to the preset transmission ratio, and the rotational speed of the driven pulley is equal to the rotational speed of the rotating shaft, and the rotational speed of the rotating shaft is equal to the rotational speed of the rotor body, the feed speed of the crusher is automatically reduced so that the driven pulley can return to its original rotational speed.

5. The crusher operation monitoring method according to claim 4, characterized in that, The crusher operation monitoring method also includes: When the speed of the driven pulley repeatedly decreases by c% of the original speed within a fifth preset time period, the actual transmission ratio between the driving pulley and the driven pulley is equal to the preset transmission ratio, and the speed of the driven pulley is equal to the speed of the rotating shaft, and the speed of the rotating shaft is equal to the speed of the rotor body, the rotor body is stopped for maintenance, where c ≥ 60.

6. The crusher operation monitoring method according to claim 4, characterized in that, The crusher operation monitoring method also includes: If the actual transmission ratio between the driving pulley and the driven pulley is greater than 1+d% of the preset transmission ratio, the driving pulley, the driven pulley, and the transmission belt shall be stopped for maintenance, wherein d≥10.

7. A crusher operation monitoring and control device, characterized in that, include: A speed detection unit is used to detect the speed of the driving pulley, the driven pulley, the rotating shaft, and the rotor. A control unit, which is used to execute the crusher operation monitoring method as described in any one of claims 1 to 6 based on the detection results of the speed detection unit.

8. A crusher, characterized in that, The crusher operation monitoring method as described in any one of claims 1 to 6 is used to monitor the operation status, or it includes the crusher operation monitoring and control device as described in claim 7.

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