A bucket drop detection system and method for a bucket elevator

Abstract

The application relates to the sintering technical field and provides a lifting belt bucket drop detection system and method of a bucket elevator, which comprises the following: a radiation source arranged at one side of the lifting belt and having an exit opening facing the lifting belt; a collimator arranged between the radiation source and the lifting belt to make the dual-energy X-rays emitted by the radiation source vertical to the lifting belt; and a detector arranged at the other side of the lifting belt to receive the high-energy transmission signal value and the low-energy transmission signal of the dual-energy X-rays transmitted through the lifting belt after the dual-energy X-rays are transmitted through the lifting belt. According to the technical scheme, whether the lifting belt appears the bucket drop condition can be detected through the dual-energy X-ray transmission mode without contacting the lifting belt or the hopper, the dual-energy X-rays have the penetration ability and the material discrimination ability, the condition of the lifting belt can be detected in real time during normal operation of the equipment, and the detection cost and the maintenance cost are reduced.

Description

Technical Field

[0001] This application relates to the field of sintering technology, and in particular to a bucket elevator belt bucket drop detection system and method. Background Technology

[0002] Bucket elevators are continuous conveying machines that use a series of buckets uniformly fixed to an endless traction component to vertically lift materials. Bucket elevators use a series of buckets fixed to a traction chain or belt to transport bulk materials in an upward-sloping direction.

[0003] Bucket elevators are vertical material conveying devices with advantages such as simple structure, low maintenance cost, high conveying efficiency, high lifting height, stable operation, and wide application range. Mines use belt-type bucket elevators to maximize the lifting of ore within limited space. However, in actual production, due to factors such as large ore size, heavy weight, and protruding edges, buckets may fall off the conveyor belt. If this is not detected in time, it will seriously affect the operating efficiency of the bucket elevator. Summary of the Invention

[0004] This application provides a bucket elevator belt bucket drop detection system and method to detect whether buckets have fallen off the elevator belt in a timely manner.

[0005] The first aspect of this application provides a bucket elevator belt bucket drop detection system, wherein the bucket elevator includes at least a bucket belt and buckets disposed on the bucket belt, comprising:

[0006] A radiation source is positioned on one side of the lifting belt, with the outlet of the radiation source facing the lifting belt.

[0007] A collimator is placed between the X-ray source and the lifting belt to ensure that the dual-energy X-rays emitted by the X-ray source are perpendicular to the lifting belt.

[0008] The detector is located on the other side of the lifting belt to receive the high-energy transmission signal and low-energy transmission signal of the dual-energy X-rays emitted by the X-ray source after passing through the lifting belt.

[0009] The controller, connected to the radiation source and detector, is configured as follows:

[0010] When the lifting belt is in operation, the X-ray source is controlled to emit dual-energy X-rays toward the lifting belt, and the high-energy transmission signal value and low-energy transmission signal value after passing through the lifting belt are acquired in real time by the detector.

[0011] Based on the high-energy transmission signal value and low-energy transmission signal value after the transmission lifting belt, the R value of dual-energy X-rays is calculated in real time, and the operating state of the lifting belt is determined based on the real-time calculated R value. The operating state includes no-load operation and material-loaded operation.

[0012] If the lifting belt is running unloaded, it is determined whether there are consecutive identical values ​​in the real-time low-energy transmission signal values. If there are consecutive identical values ​​in the real-time low-energy transmission signal values, a signal that the bucket elevator has dropped a bucket is generated.

[0013] If the lifting belt is in material-carrying operation, the R value of dual-energy X-rays is calculated in real time. If a preset value appears periodically in the calculated R value, a signal is generated indicating that the bucket elevator has dropped a bucket.

[0014] In one implementation, the step of determining the operating state of the lifting belt based on the real-time calculated R value includes:

[0015] If the real-time calculated R value is equal to the first threshold, then the lifting belt is in no-load operation, wherein the first threshold is a characteristic of the lifting belt's ability to absorb dual-energy X-rays;

[0016] If the real-time calculated R value is equal to the second threshold, then the lifting belt is in material-carrying operation. The first threshold is the characteristic of the lifting belt and the material as a whole absorbing dual-energy X-rays under the material-carrying turntable.

[0017] In one implementation, the step of determining whether there are consecutive identical values ​​in the real-time acquired low-energy transmission signal includes:

[0018] Convert the low-energy transmission signal values ​​calculated in real time into square wave diagrams;

[0019] Determine if there are continuous, high-value low-energy transmission signal values ​​on the square wave diagram.

[0020] In one implementation, if the hoisting belt is running under no-load conditions, the method further includes:

[0021] The running speed of the lifting belt is obtained, and based on the running speed of the lifting belt and the low-energy transmission signal value calculated in real time, the average value of the low-energy transmission signal value corresponding to the lifting belt of a preset length is generated, wherein the preset length is greater than the length of the hopper.

[0022] If the average value of the low-energy transmission signal corresponding to the preset length of the lifting belt is not equal to the preset value, a signal indicating that the bucket elevator has dropped buckets is generated.

[0023] In one implementation, the R value is determined using the following model:

[0024]

[0025] In the formula, μ ml and μ mh I represents the mass absorption coefficient of a substance in low-energy X-rays and high-energy X-rays, respectively. l and I h I represents the energy received by the detector after low-energy and high-energy X-rays penetrate matter. l0 and I h0 This represents the initial energy values ​​of low-energy and high-energy X-rays.

[0026] In one implementation, a shielding body is further included, the shielding body being a conical structure, the narrow end of the conical structure being connected to the exit port of the radiation source, and the collimator being disposed at the wide end of the conical structure.

[0027] In one implementation, a protective channel is also included, in which the X-ray source, collimator, and detector are disposed to absorb X-ray radiation.

[0028] A second aspect of this application provides a method for detecting bucket drop on the lifting belt of a bucket elevator, wherein the bucket elevator includes at least a lifting belt and buckets disposed on the lifting belt, characterized in that it includes:

[0029] While the lifting belt is in operation, dual-energy X-rays are emitted toward the lifting belt, and the high-energy transmission signal value and low-energy transmission signal value after passing through the lifting belt are acquired in real time.

[0030] Based on the high-energy transmission signal value and low-energy transmission signal value after the transmission lifting belt, the R value of dual-energy X-rays is determined, and based on the R value, the operating state of the lifting belt is determined, including no-load operation and material-loaded operation.

[0031] If the lifting belt is running unloaded, it is determined whether there are consecutive identical values ​​in the real-time low-energy transmission signal values. If there are consecutive identical values ​​in the real-time low-energy transmission signal values, a signal that the bucket elevator has dropped a bucket is generated.

[0032] If the lifting belt is in material-carrying operation, the R value of dual-energy X-rays is calculated in real time. If the calculated R value meets the preset conditions, a signal is generated indicating that the bucket elevator has dropped a bucket.

[0033] A third aspect of this application provides a bucket elevator belt bucket drop detection device, the bucket elevator belt bucket drop detection device comprising:

[0034] The acquisition module is used to emit dual-energy X-rays onto the lifting belt while the lifting belt is in operation, and to acquire the high-energy transmission signal value and low-energy transmission signal value after passing through the lifting belt in real time.

[0035] The operating status determination module determines the R value of dual-energy X-rays based on the high-energy transmission signal value and the low-energy transmission signal value after the transmission lifting belt, and determines the operating status of the lifting belt based on the R value. The operating status includes no-load operation and material-loaded operation.

[0036] The judgment module is used to determine whether there are consecutive identical values ​​in the real-time low-energy transmission signal values ​​when the bucket elevator is running under no-load conditions. If there are consecutive identical values ​​in the real-time low-energy transmission signal values, a signal indicating that the bucket elevator has dropped a bucket is generated.

[0037] Additionally, it is used to improve the conveyor belt when it is in material-loaded operation, and to calculate the R value of dual-energy X-rays in real time. If the calculated R value meets the preset conditions, a signal is generated indicating that the bucket elevator has dropped a bucket.

[0038] The fourth aspect of this application provides a computer-readable storage medium storing at least one executable instruction. When the executable instruction is executed on a hoist belt bucket drop detection system / device, it causes the hoist belt bucket drop detection system / device to perform the operation of the hoist belt bucket drop detection method provided in the second aspect of this application.

[0039] This application provides a bucket elevator conveyor belt drop detection system and method, wherein the bucket elevator includes at least a conveyor belt and buckets disposed on the conveyor belt. The bucket elevator belt drop detection system includes: an X-ray source disposed on one side of the conveyor belt with the outlet of the X-ray source facing the conveyor belt; a collimator disposed between the X-ray source and the conveyor belt to make the dual-energy X-rays emitted by the X-ray source perpendicular to the conveyor belt; and a detector disposed on the other side of the conveyor belt to receive the high-energy transmission signal value and low-energy transmission signal value of the dual-energy X-rays emitted by the X-ray source after passing through the conveyor belt. By applying the technical solution of this application, it is possible to detect whether the conveyor belt has dropped buckets without contacting the conveyor belt or the buckets by means of dual-energy X-ray transmission. Moreover, dual-energy X-rays have penetrating power and material discrimination ability. During normal operation of the equipment, the condition of the conveyor belt can also be detected in real time, reducing detection and maintenance costs. Attached Figure Description

[0040] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A schematic diagram of a dual-energy X-ray-based belt damage detection device provided in this application embodiment;

[0042] Figure 2 A schematic diagram of a detection process configured for a controller provided in an embodiment of this application;

[0043] Figure 3 The waveform diagram of low-energy transmission signal conversion when the lifting belt is running unloaded and the bucket has not fallen off, provided in the embodiments of this application;

[0044] Figure 4 The waveform diagram of low-energy transmission signal conversion when the bucket of the hoisting belt falls off during no-load operation, provided in an embodiment of this application;

[0045] Figure 5 This is a flowchart illustrating a dual-energy X-ray method for detecting damage to a lifting belt, as provided in an embodiment of this application.

[0046] In the picture:

[0047] 1-Radiation source, 2-Collimator, 3-Detector, 4-Shielding. Detailed Implementation

[0048] Bucket elevators are continuous conveying machines that use a series of buckets uniformly fixed to an endless traction component to vertically lift materials. Bucket elevators use a series of buckets fixed to a traction chain or belt to transport bulk materials in an upward-sloping direction.

[0049] Bucket elevators are vertical material conveying devices with advantages such as simple structure, low maintenance cost, high conveying efficiency, high lifting height, stable operation, and wide application range. Mines use belt-type bucket elevators to maximize the lifting of ore within limited space. However, in actual production, due to factors such as large ore size, heavy weight, and protruding edges, buckets may fall off the conveyor belt. If this is not detected in time, it will seriously affect the operating efficiency of the bucket elevator.

[0050] In order to provide a device or method for timely detection of bucket drop on a bucket elevator belt, this application provides a bucket elevator belt bucket drop detection system and method.

[0051] The first aspect of this application provides a bucket elevator belt bucket drop detection system, including: an X-ray source 1, a collimator 2, a detector 3, a controller, and a shield 4.

[0052] like Figure 1As shown, X-ray source 1 is used to emit dual-energy X-rays and is set on one side of the lifting belt, with the outlet of X-ray source 1 facing the lifting belt. Collimator 2 is set between X-ray source 1 and lifting belt so that the dual-energy X-rays emitted by X-ray source 1 are perpendicular to the lifting belt. Shield 4 is a conical structure, with the narrow end of the conical structure connected to the outlet of X-ray source 1 and collimator 2 set at the wide end of the conical structure to limit the reflection range of X-rays using the shield. Detector 3 is set on the other side of the lifting belt to receive the high-energy transmission signal and low-energy transmission signal after the dual-energy X-rays emitted by the X-ray source pass through the lifting belt. Specifically, X-ray source 1 is installed vertically to the lifting belt, about 1m away from the lifting belt bucket. Detector is installed parallel to the lifting belt below it, avoiding the location of the idler roller. The angle between the detector and the X-ray source is 90 degrees to ensure that the X-rays are incident perpendicularly.

[0053] It should be noted that, as Figure 1 As shown, in actual use, the lifting belt is generally designed as a double layer (ring) to achieve the circulation of the lifting belt. In actual detection, only one side of the lifting belt is detected at one position. As the lifting belt moves, the entire lifting belt is detected. Therefore, the detector 3 is equivalent to being set between the ring-shaped double-layer lifting belt.

[0054] The controller connects to the radiation source 1 and detector 3, such as... Figure 2 As shown, the controller is configured as follows:

[0055] Step 210: With the lifting belt in operation, control the X-ray source to emit dual-energy X-rays toward the lifting belt, and use the detector to acquire the high-energy transmission signal value and low-energy transmission signal value after passing through the lifting belt in real time.

[0056] The lifting belt can be in an unloaded state or a loaded state. Unloaded operation means that there is no material on the lifting belt / hopper, while loaded operation means that there is material on the lifting belt / hopper. In actual application, uniform speed operation is preferred.

[0057] Step 220: Calculate the R value of dual-energy X-rays in real time based on the high-energy transmission signal value and low-energy transmission signal value after the transmission lifting belt, and determine the operating state of the lifting belt based on the real-time calculated R value. The operating state includes no-load operation and material-loaded operation.

[0058] The R value is determined using the following model:

[0059]

[0060] In the formula, μ ml and μ mhI represents the mass absorption coefficient of a substance in low-energy X-rays and high-energy X-rays, respectively. l and I h I represents the energy received by the detector after low-energy and high-energy X-rays penetrate matter. l0 and I h0 This represents the initial energy values ​​of low-energy and high-energy X-rays.

[0061] Specifically, if the real-time calculated R value equals the first threshold, it indicates that the hoisting belt is operating under no-load conditions. The first threshold is a characteristic of the hoisting belt's ability to absorb dual-energy X-rays. Because the hoisting belt contains steel ropes, and the R values ​​corresponding to the hoisting belt and the hopper are similar, in other words, when the hoisting belt is operating under no-load conditions, there is no material on the hoisting belt. At this time, there may or may not be a hopper, and the detected R values ​​are basically the same. It should be noted that in practical applications, the first threshold is not a definite and unique value, but can be understood as a range value. An R value equal to the first threshold means that the R value is within the numerical range corresponding to the first threshold. Alternatively, the first threshold is a definite and unique value. If the difference between the R value and the first threshold is small and meets the preset deviation, then the R value is also considered to be equal to the first threshold.

[0062] If the real-time calculated R value is equal to the second threshold, then the hoisting belt is in material-carrying operation. The first threshold is the characteristic of the hoisting belt and the material as a whole absorbing dual-energy X-rays under the material-carrying turntable. Similarly, the second threshold here can be understood as not a definite unique value, but a range value. The R value being equal to the second threshold means that the R value is within the numerical range corresponding to the second threshold. Alternatively, the second threshold is a definite unique value. If the difference between the R value and the second threshold is small and meets the preset deviation, then the R value is also considered to be equal to the second threshold.

[0063] It should be noted that, since this is a preliminary test of the operating status of the lifting belt, the mode of all the R values ​​measured here is taken as the R value, and the minor differences in the R values ​​are ignored.

[0064] Step 230: If the lifting belt is running under no-load, determine whether there are consecutive identical values ​​in the real-time acquired low-energy transmission signal. If there are consecutive identical values ​​in the real-time acquired low-energy transmission signal, generate a signal that the bucket elevator has dropped a bucket.

[0065] Because low-energy X-rays have weak penetrating power, the change in the low-energy transmission signal value acquired by detector 3 after transmitting through the lifting belt is more pronounced when the thickness of the object changes. This can be used to detect changes in the thickness of the lifting belt. Figure 3 As shown, when the hoisting belt is running unloaded, the low-energy transmitted signal received by detector 3 is converted into waveform T. Waveform T is similar to a square wave and exhibits periodic changes; as shown... Figure 4 As shown, when the bucket of the hoisting belt falls off, the low-energy transmission signal received by the detector 3 is converted into waveform T. The detector 3 will continuously detect a higher transmission signal (the same value continuously) within a certain period, which is reflected as a continuous high-frequency signal on waveform T. At this time, it can be determined that the bucket of the hoisting belt may have fallen off.

[0066] Of course, in practical applications, if the lifting belt is running unloaded, other methods can be used to determine whether the bucket elevator is experiencing bucket drop. For example, the running speed of the lifting belt can be obtained, and the average value of the low-energy transmission signal corresponding to the lifting belt of a preset length can be generated based on the running speed of the lifting belt and the low-energy transmission signal value calculated in real time.

[0067] In this scenario, the preset length is greater than the bucket length, for example, 3 to 5 times the bucket length. If the average low-energy transmission signal value corresponding to the bucket elevator of the preset length is not equal to the preset value, a signal indicating bucket drop is generated. Thus, when a bucket drops at the preset length, the low-energy transmission signal value at the drop point will fluctuate, causing a change in the average low-energy transmission signal value corresponding to the bucket of the preset length.

[0068] It should be noted that whether the mean value is equal to the preset value is determined by the difference between the mean value and the preset value. When the difference is within the preset error range, the mean value is equal to the preset value. The difference is related to the preset length. The larger the preset length, the smaller the difference value. The smaller the preset loudness, the larger the difference value.

[0069] Step 240: If the lifting belt is in material-carrying operation, the R value of dual-energy X-rays is calculated in real time. If a preset value appears periodically in the calculated R value, a signal is generated indicating that the bucket elevator has dropped a bucket.

[0070] To eliminate the potential impact of the material carried by the conveyor belt during operation, such as the absorption of dual-energy X-rays by the ore on the conveyor belt causing the change in the low-energy transmission signal value obtained by the detector after passing through the conveyor belt to be basically consistent with the normal situation, this embodiment of the application uses dual-energy X-rays to further determine the conveyor belt falling off the bucket. When the dual-energy X-rays penetrate the conveyor belt, the detector will receive a low-energy transmission signal value I. l and high-energy transmission signal value I h Based on the following formula, the unique characteristic R value, which is only related to the material's ability to absorb radiation, and is independent of the material's thickness, can be calculated.

[0071] When the object being transmitted is an unloaded conveyor belt, the calculated value is R0. When the conveyor belt is loaded, in addition to real-time judgment of the low-energy transmission signal of the conveyor belt itself, the R value will also be calculated in real-time. If the R value periodically appears as R0, it can be determined that the conveyor belt has experienced a bucket drop.

[0072] In other words, the real-time calculated R value meets the preset conditions if: there is an R value in the real-time calculated R value that is equal to the value of R0, and the value of R0 appears periodically. In the actual scenario, due to the cyclic operation of the hoisting belt, when a bucket falls off at a certain position, the value of R0 corresponding to the position of the fallen bucket will appear periodically when calculating the R value. This situation can be used to obtain the possible bucket falling situation of the hoisting belt.

[0073] The first aspect of this application provides a bucket elevator belt bucket drop detection system, wherein the bucket elevator includes at least a bucket belt and buckets disposed on the bucket belt. The system includes: a radiation source disposed on one side of the bucket belt with its outlet facing the belt; a collimator disposed between the radiation source and the bucket belt to ensure that dual-energy X-rays emitted by the radiation source are perpendicular to the bucket belt; a detector disposed on the other side of the bucket belt to receive the high-energy transmission signal and low-energy transmission signal after the dual-energy X-rays emitted by the radiation source have passed through the bucket belt; and a controller connected to the radiation source and the detector, configured to:

[0074] When the conveyor belt is in operation, the control X-ray source emits dual-energy X-rays towards the conveyor belt, and the detector acquires the high-energy transmission signal value and low-energy transmission signal value after passing through the conveyor belt in real time. Based on the high-energy transmission signal value and low-energy transmission signal value after passing through the conveyor belt, the R value of the dual-energy X-ray is calculated in real time, and the operating status of the conveyor belt is determined based on the real-time calculated R value. The operating status includes no-load operation and loaded operation. If the conveyor belt is in no-load operation, it is determined whether there are consecutive identical values ​​in the real-time acquired low-energy transmission signal value. If there are consecutive identical values ​​in the real-time acquired low-energy transmission signal value, a signal of bucket elevator dropping is generated. If the conveyor belt is in loaded operation, the R value of the dual-energy X-ray is calculated in real time. If a preset value appears periodically in the real-time calculated R value, a signal of bucket elevator dropping is generated.

[0075] The conveyor belt bucket drop detection system provided in this application embodiment can detect whether the conveyor belt has dropped buckets without contacting the conveyor belt or buckets, using dual-energy X-ray transmission. Dual-energy X-rays have penetrating power and the ability to distinguish materials. During normal operation of the equipment, the condition of the conveyor belt can also be detected in real time, thereby enabling timely detection of bucket drop on the conveyor belt, while reducing detection and maintenance costs.

[0076] A second aspect of this application provides a method for detecting bucket drop from the lifting belt of a bucket elevator, wherein the bucket elevator includes at least a lifting belt and buckets disposed on the lifting belt, and the method for detecting bucket drop from the lifting belt includes:

[0077] While the conveyor belt is in operation, dual-energy X-rays are emitted towards it, and the high-energy and low-energy transmission signal values ​​after passing through the conveyor belt are acquired in real time. Based on these values, the R-value of the dual-energy X-rays is determined, and the operating status of the conveyor belt is determined accordingly, including unloaded operation and loaded operation. If the conveyor belt is unloaded, it is determined whether there are consecutive identical low-energy transmission signal values. If so, a signal indicating bucket drop is generated. If the conveyor belt is loaded, the R-value of the dual-energy X-rays is calculated in real time. If a preset value periodically appears in the calculated R-value, a signal indicating bucket drop is generated.

[0078] To more clearly illustrate the method for detecting bucket drop in a hoisting belt provided in the embodiments of this application, Figure 5 For example.

[0079] Calculate the R value of the lifting belt under dual-energy X-ray detection while it is in operation.

[0080] Based on the calculated R value, determine whether the conveyor belt is running with material.

[0081] If the conveyor belt is in a loaded operating state, the R value is calculated in real time.

[0082] Determine whether there are periodically equal values ​​in the R value, that is, determine whether the R value periodically appears with a preset value. If the R value periodically appears with a preset value, then the bucket of the hoisting belt is falling off.

[0083] If the preset value does not appear periodically in the R value, then there is no bucket falling off the lifting belt.

[0084] If the lifting belt is running under no-load conditions, the low-energy transmission signal value is calculated in real time.

[0085] Determine whether there are consecutive identical values ​​in the real-time acquired low-energy transmission signal. If there are consecutive identical values ​​in the real-time acquired low-energy transmission signal, then generate a signal that the bucket elevator has dropped a bucket.

[0086] If the low-energy transmission signal values ​​acquired in real time do not have consecutive identical values, a signal is generated indicating that the bucket elevator is not dropping buckets.

[0087] The second aspect of this application provides a method for detecting bucket drop in a bucket elevator conveyor belt. This method can detect whether the bucket has dropped without contacting the conveyor belt or the bucket using dual-energy X-ray transmission. Dual-energy X-rays have penetrating power and the ability to distinguish substances. During normal operation of the equipment, the condition of the conveyor belt can also be detected in real time, reducing detection and maintenance costs.

[0088] A third aspect of this application provides a bucket elevator belt bucket drop detection device, the bucket elevator belt bucket drop detection device comprising:

[0089] The acquisition module is used to emit dual-energy X-rays onto the lifting belt while the lifting belt is in operation, and to acquire the high-energy transmission signal value and low-energy transmission signal value after passing through the lifting belt in real time.

[0090] The operating status determination module determines the R value of dual-energy X-rays based on the high-energy transmission signal value and the low-energy transmission signal value after the transmission lifting belt, and determines the operating status of the lifting belt based on the R value. The operating status includes no-load operation and material-loaded operation.

[0091] The judgment module is used to determine whether there are consecutive identical values ​​in the real-time low-energy transmission signal values ​​when the bucket elevator is running under no-load conditions. If there are consecutive identical values ​​in the real-time low-energy transmission signal values, a signal indicating that the bucket elevator has dropped a bucket is generated.

[0092] Additionally, it is used to improve the conveyor belt when it is in material-loaded operation, and to calculate the R value of dual-energy X-rays in real time. If the calculated R value meets the preset conditions, a signal is generated indicating that the bucket elevator has dropped a bucket.

[0093] The fourth aspect of this application provides a computer-readable storage medium storing at least one executable instruction. When the executable instruction is executed on a hoist belt bucket drop detection system / device, it causes the hoist belt bucket drop detection system / device to perform the operation of the hoist belt bucket drop detection method provided in the second aspect of this application.

[0094] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this application. It should be understood that the above are only specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

Claims

1. A bucket elevator belt bucket drop detection system, wherein, The bucket elevator includes at least a lifting belt and buckets disposed on the lifting belt, characterized in that it comprises: A radiation source is positioned on one side of the lifting belt, with the outlet of the radiation source facing the lifting belt. A collimator is placed between the X-ray source and the lifting belt to ensure that the dual-energy X-rays emitted by the X-ray source are perpendicular to the lifting belt. The detector is located on the other side of the lifting belt to receive the high-energy transmission signal and low-energy transmission signal of the dual-energy X-rays emitted by the X-ray source after passing through the lifting belt. The controller, connected to the radiation source and detector, is configured as follows: When the lifting belt is in operation, the X-ray source is controlled to emit dual-energy X-rays toward the lifting belt, and the high-energy transmission signal value and low-energy transmission signal value after passing through the lifting belt are acquired in real time by the detector. Based on the high-energy transmission signal value and low-energy transmission signal value after the transmission lifting belt, the R value of dual-energy X-rays is calculated in real time, and the operating state of the lifting belt is determined based on the real-time calculated R value. The operating state includes no-load operation and material-loaded operation. If the lifting belt is running unloaded, it is determined whether there are consecutive identical values ​​in the real-time low-energy transmission signal values. If there are consecutive identical values ​​in the real-time low-energy transmission signal values, a signal that the bucket elevator has dropped a bucket is generated. If the lifting belt is in material-carrying operation, the R value of dual-energy X-rays is calculated in real time. If a preset value appears periodically in the calculated R value, a signal is generated indicating that the bucket elevator has dropped a bucket.

2. The bucket elevator belt bucket drop detection system according to claim 1, characterized in that, The step of determining the operating status of the lifting belt based on the real-time calculated R value includes: If the real-time calculated R value is equal to the first threshold, then the lifting belt is in no-load operation, wherein the first threshold is a characteristic of the lifting belt's ability to absorb dual-energy X-rays; If the real-time calculated R value is equal to the second threshold, then the lifting belt is in material-carrying operation. The first threshold is the characteristic of the lifting belt and the material as a whole absorbing dual-energy X-rays under the material-carrying turntable.

3. The bucket elevator belt bucket drop detection system according to claim 1, characterized in that, The step of determining whether there are consecutive identical values ​​in the real-time acquired low-energy transmission signal includes: Convert the low-energy transmission signal values ​​calculated in real time into square wave diagrams; Determine if there are continuous, high-value low-energy transmission signal values ​​on the square wave diagram.

4. The bucket elevator belt bucket drop detection system according to claim 1, characterized in that, If the lifting belt is running under no-load conditions, the following is also included: The running speed of the lifting belt is obtained, and based on the running speed of the lifting belt and the low-energy transmission signal value calculated in real time, the average value of the low-energy transmission signal value corresponding to the lifting belt of a preset length is generated, wherein the preset length is greater than the length of the hopper. If the average value of the low-energy transmission signal corresponding to the preset length of the lifting belt is not equal to the preset value, a signal indicating that the bucket elevator has dropped buckets is generated.

5. A bucket elevator belt bucket drop detection system according to claim 1, characterized in that, The R value is determined using the following model: ； In the formula, and These represent the mass absorption coefficients of the material in low-energy X-rays and high-energy X-rays, respectively. and This represents the energy received by the detector after low-energy and high-energy X-rays penetrate matter. and This represents the initial energy values ​​of low-energy and high-energy X-rays.

6. The bucket elevator belt bucket drop detection system according to claim 1, characterized in that, It also includes a shield, which is a conical structure, with the narrow end of the conical structure connected to the exit port of the radiation source, and the collimator disposed at the wide end of the conical structure.

7. A bucket elevator belt bucket drop detection system according to claim 1, characterized in that, It also includes a protective channel, in which the radiation source, collimator and detector are disposed to absorb X-ray radiation.

8. A method for detecting bucket drop on the conveyor belt of a bucket elevator, wherein, The bucket elevator includes at least a lifting belt and buckets disposed on the lifting belt, characterized in that it comprises: While the lifting belt is in operation, dual-energy X-rays are emitted toward the lifting belt, and the high-energy transmission signal value and low-energy transmission signal value after passing through the lifting belt are acquired in real time. Based on the high-energy transmission signal value and low-energy transmission signal value after the transmission lifting belt, the R value of dual-energy X-rays is determined, and based on the R value, the operating state of the lifting belt is determined, including no-load operation and material-loaded operation. If the lifting belt is running unloaded, it is determined whether there are consecutive identical values ​​in the real-time low-energy transmission signal values. If there are consecutive identical values ​​in the real-time low-energy transmission signal values, a signal that the bucket elevator has dropped a bucket is generated. If the lifting belt is in material-carrying operation, the R value of dual-energy X-rays is calculated in real time. If the calculated R value meets the preset conditions, a signal is generated indicating that the bucket elevator has dropped a bucket.

9. A bucket elevator belt bucket drop detection device, characterized in that, The elevator belt bucket drop detection device includes: The acquisition module is used to emit dual-energy X-rays onto the lifting belt when the lifting belt is in operation, and to acquire the high-energy transmission signal value and low-energy transmission signal value after passing through the lifting belt in real time. The operating status determination module determines the R value of dual-energy X-rays based on the high-energy transmission signal value and the low-energy transmission signal value after the transmission lifting belt, and determines the operating status of the lifting belt based on the R value. The operating status includes no-load operation and material-loaded operation. The judgment module is used to determine whether there are consecutive identical values ​​in the real-time low-energy transmission signal values ​​when the lifting belt is running under no-load conditions. If there are consecutive identical values ​​in the real-time low-energy transmission signal values, a signal that the bucket elevator has dropped a bucket is generated. Additionally, when the lifting belt is in material-loaded operation, the R value of dual-energy X-rays is calculated in real time. If the calculated R value meets a preset condition, a signal indicating that the bucket elevator has dropped a bucket is generated.

10. A computer-readable storage medium, characterized in that, The storage medium stores at least one executable instruction, which, when executed on the hoist belt bucket drop detection system / device, causes the hoist belt bucket drop detection system / device to perform the operation of the hoist belt bucket drop detection method as described in claim 8.

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