A trolley working state detection system and method

Abstract

The present application relates to the technical field of sintered pellet automation control, and particularly relates to a trolley working state detection system and method. The system comprises a trolley, a main body, first and second wheels arranged on both sides of the main body, the first and second wheels are each provided with a first measuring point, and second measuring points are arranged at equal intervals on both sides of a trolley track, and the second measuring points are flush with the first measuring points in height; a laser ranging device is arranged corresponding to the second measuring points. The trolley working state detection system and method provided by the present application compares the detection distance values La and Lb with the standard distance values La0 and Lb0 in the normal state, and judges whether the trolley working state is abnormal according to the comparison result, and when it is judged that the trolley working state is abnormal, a prompt is sent, so that when the trolley working state is abnormal, the operator will receive a prompt, thereby avoiding the situation that manual maintenance is not in place to a certain extent without artificially judging the trolley working state.

Description

Technical Field

[0001] This invention relates to the field of automated control technology for sintering pellets, and in particular to a trolley working status detection system and method. Background Technology

[0002] Currently, key equipment such as belt sintering machines and pellet roasting machines operate in high-temperature environments, making it extremely inconvenient to inspect their operation. When issues such as wheel slippage, misalignment, or track wear occur on the trolleys, they impact production to varying degrees, sometimes even causing production shutdowns. Most sintering or pelletizing plants currently rely on maintenance inspections for these trolleys, and the effectiveness is highly dependent on the skill level of the personnel performing the maintenance, requiring significant manpower. Summary of the Invention

[0003] This application provides a bogie working status detection system and method, which solves the technical problem that most sintering plants or pelletizing plants rely on maintenance to inspect and maintain bogie equipment, and the effectiveness is often highly dependent on the maintenance skills of personnel, requiring a large amount of manpower.

[0004] This application provides a trolley working status detection system, the system comprising:

[0005] The trolley includes a main body and a first wheel and a second wheel disposed on both sides of the main body. The first wheel and the second wheel are each provided with a first measuring point. The trolley track is provided with second measuring points at equal intervals on both sides, and the second measuring points are at the same height as the first measuring points.

[0006] A laser rangefinder is positioned at the second measurement point to collect the detection distance value La between the first measurement point of the first wheel and the second measurement point on the same side, as well as the detection distance value Lb between the first measurement point of the second wheel and the second measurement point on the same side.

[0007] In some embodiments, the system further includes a testing platform, which is equally spaced on both sides of the trolley track. The second measuring point is located on the testing platform, and the first measuring point is located above the center point of the first wheel and the second wheel.

[0008] In some embodiments, the distance between the second measuring point and the trolley track is greater than 5 mm.

[0009] In some embodiments, the method includes:

[0010] The detection distance value La between the first measurement point of the first wheel and the second measurement point on the same side and the detection distance value Lb between the first measurement point of the second wheel and the second measurement point on the same side are collected. The second measurement points are equally spaced on both sides of the trolley track, and the height of the second measurement points is the same as that of the first measurement point.

[0011] The detection distance values ​​La and Lb are compared with La0 and Lb0. Based on the comparison results, it is determined whether the working state of the trolley is abnormal. When it is determined that the working state of the trolley is abnormal, a prompt is issued. La0 is the standard distance value between the first measurement point of the first wheel and the second measurement point on the same side under normal conditions. Lb0 is the standard distance value between the first measurement point of the second wheel and the second measurement point on the same side under normal conditions.

[0012] In some implementations, the step of comparing the detection distance values ​​La and Lb with La0 and Lb0, and determining whether the trolley's working state is abnormal based on the comparison result includes:

[0013] The value of La+Lb is compared with the value of La0+Lb0. When La+Lb=La0+Lb0, the wheels of the trolley are judged to be normal.

[0014] When La+Lb≠La0+Lb0 and La0-La>x, the first wheel is determined to be abnormal; when La+Lb≠La0+Lb0 and Lb0-Lb>x, the second wheel is determined to be abnormal; where x represents the allowable deviation range.

[0015] In some implementations, x is less than 1 mm.

[0016] In some implementations, the step of comparing the value of La+Lb with the value of La+Lb, and determining that the wheels of the trolley are normal when La+Lb=La0+Lb0, includes:

[0017] The value of La0-La is compared with the value of Lb0-Lb. When La0-La≠Lb0-Lb for more than n consecutive times, it is determined that the trolley is deviating. Here, n represents the threshold of the number of consecutive detections.

[0018] In some implementations, the value of n is 3.

[0019] In some implementations, the step of determining the first wheel malfunction when La+Lb≠La0+Lb0 and La0-La>x, and determining the second wheel malfunction when La+Lb≠La0+Lb0 and Lb0-Lb>x, further includes:

[0020] When La0-La>y, it is determined that the first wheel has fallen off; when Lb0-Lb>y, it is determined that the second wheel has fallen off; where y represents the threshold for judging wheel falling off.

[0021] In some implementations, the value of y is 10 mm.

[0022] The beneficial effects of this application are as follows:

[0023] This application provides a trolley working status detection system and method. By collecting the detection distance value La between the first measuring point of the first wheel and the second measuring point on the same side, and the detection distance value Lb between the first measuring point of the second wheel and the second measuring point on the same side, and comparing the detection distance values ​​La and Lb with the standard distance values ​​La0 and Lb0 under normal conditions, the system determines whether the trolley working status is abnormal based on the comparison results. When the trolley working status is determined to be abnormal, a prompt is issued. Thus, when the trolley working status is abnormal, the operator will receive a prompt, thereby eliminating the need for manual judgment of the trolley working status and avoiding the occurrence of inadequate manual maintenance to a certain extent. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0025] Figure 1 This is a schematic diagram of the trolley working status detection system provided in this embodiment;

[0026] Figure 2 for Figure 1 Side view;

[0027] Figure 3 This is a schematic diagram of multiple trolleys in operation.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - Vehicle, 110 - Main body, 120 - First wheel, 130 - Second wheel, 200 - Laser rangefinder, 300 - Inspection platform. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0034] Combination Figures 1-3 This application provides a trolley working status detection system, including a trolley 100 and a laser rangefinder 200. The trolley 100 runs on a trolley track and includes a main body 110 and first wheels 120 and second wheels 130 disposed on both sides of the main body 110. Of course, there may be multiple first wheels 120 and second wheels 130. The first wheels 120 and second wheels 130 cooperate with the trolley track. Each of the first wheels 120 and second wheels 130 is provided with a first measuring point. Second measuring points are equally spaced on both sides of the trolley track, that is, the distance between one side of the trolley track and the second measuring point on the same side is the same as the distance between the other side of the trolley track and the second measuring point on the same side, and the second measuring points are at the same height as the first measuring points.

[0035] The laser rangefinder 200 is correspondingly set at the second measurement point to collect the detection distance value La between the first measurement point of the first wheel 120 and the second measurement point on the same side, and the detection distance value Lb between the first measurement point of the second wheel 130 and the second measurement point on the same side. The detection distance values ​​La and Lb are compared with the standard distance values ​​La0 and Lb0 under normal conditions, and the working status of the trolley 100 is judged based on the comparison results. When the working status of the trolley 100 is judged to be abnormal, a prompt is issued. Thus, when the working status of the trolley 100 is abnormal, the operator will receive a prompt, thereby eliminating the need for manual judgment of the working status of the trolley 100 and avoiding the occurrence of inadequate manual maintenance to a certain extent.

[0036] In some embodiments, the system further includes a testing platform 300, which is equally spaced on both sides of the trolley track. A second measuring point is set on the testing platform 300, and a first measuring point is set above the center point of the first wheel 120 and the second wheel 130.

[0037] Specifically, the distance between the second measuring point and the trolley track must be greater than 5mm.

[0038] Based on the same inventive concept, this application also provides a method for detecting the working state of a trolley, the method comprising:

[0039] S100: Collect the detection distance value La between the first measuring point of the first wheel 120 and the second measuring point on the same side, and the detection distance value Lb between the first measuring point of the second wheel 130 and the second measuring point on the same side. The second measuring points are equally spaced on both sides of the trolley track, and the height of the second measuring points is the same as that of the first measuring points.

[0040] The laser rangefinder 200 can be placed at the second measurement point, and the laser rangefinder 200 can collect the detection distance value La between the first measurement point of the first wheel 120 and the second measurement point on the same side, as well as the detection distance value Lb between the first measurement point of the second wheel 130 and the second measurement point on the same side.

[0041] S200: Compare the detected distance values ​​La and Lb with La0 and Lb0, and determine whether the working state of the trolley 100 is abnormal based on the comparison results. When the working state of the trolley 100 is determined to be abnormal, a prompt is issued. Among them, La0 is the standard distance value between the first measuring point of the first wheel 120 and the second measuring point on the same side when the working state is normal, and Lb0 is the standard distance value between the first measuring point of the second wheel 130 and the second measuring point on the same side when the working state is normal.

[0042] The trolley 100 can be brought into normal condition by maintaining the trolley track and the trolley 100. At this time, the standard distance value La0 between the first measuring point of the first wheel 120 and the second measuring point on the same side and the standard distance value Lb0 between the first measuring point of the second wheel 130 and the second measuring point on the same side can be collected by the laser ranging device 200.

[0043] It should be noted that multiple trolleys 100 run on the trolley track. Each trolley 100 has a first measuring point on its first wheel 120 and second wheel 130. The area on both sides of the trolley track with second measuring points is the detection area. After the trolley track and each trolley 100 are properly maintained, the first round of trolley detection is performed. At this time, all trolleys 100 are in normal condition. As multiple trolleys 100 pass through the detection area in sequence, the standard distance values ​​La0 and Lb0 of each trolley 100 can be collected. Of course, the standard distance values ​​La0 and Lb0 of different trolleys 100 will have slight deviations. To facilitate identification of different trolleys 100, each trolley 100 can be assigned an identity. For example, the first wheel measured by the first trolley 100 passing through the inspection area is designated as wheel A 1#A, the second wheel as wheel B 1#B, the first wheel measured by the second trolley 100 passing through the inspection area is designated as wheel A 2#A, the second wheel as wheel B 2#B, and so on. This facilitates accurate subsequent inspection of each trolley 100. After completing the first lap of trolley 100 scanning, each wheel of each trolley 100 has corresponding standard distance values ​​La0 and Lb0. When a new round of trolley wheel inspection begins, the inspection distance values ​​La and Lb of each wheel of each trolley 100 can be collected. Of course, multiple rounds of inspection can be performed, collecting the inspection data from each round. This allows the operating status of the trolley 100 to be predicted in advance before the next operation, eliminating potential malfunctions at the initial stage and preventing production accidents.

[0044] In some implementations, the step of comparing the detection distance values ​​La and Lb with La0 and Lb0, and determining whether the working status of the trolley 100 is abnormal based on the comparison results includes:

[0045] S210: Compare the value of La+Lb with the value of La0+Lb0. When La+Lb=La0+Lb0, determine that the wheels of trolley 100 are normal.

[0046] When La + Lb = La0 + Lb0, it indicates that the wheels of trolley 100 are normal, but trolley 100 has two possible states:

[0047] 1) La0-La=Lb0-Lb. Since the second measuring points are set at equal intervals on both sides of the trolley track, La0=Lb0. Therefore, when La0-La=Lb0-Lb, it indicates that the detection distance value of the measuring trolley 100 is equal to the standard distance value, and the measuring trolley 100 is in a state of not deviating.

[0048] 2) La0-La≠Lb0-Lb, that is, the measured distance value of the measuring trolley 100 is not equal to the standard distance value, which indicates that the trolley 100 is off track.

[0049] Therefore, specifically, the values ​​of La+Lb are compared. When La+Lb = La0+Lb0, the steps to determine if the wheels of trolley 100 are normal include:

[0050] S220: Compare the value of La0-La with the value of Lb0-Lb. If La0-La≠Lb0-Lb for more than n consecutive times, determine that the trolley 100 is off track; where n represents the threshold of the number of consecutive detections.

[0051] If, in n or more consecutive rounds of testing, La0-La≠Lb0-Lb is consistently found, then it can be determined that the trolley 100 has deviated from its course. Specifically, n is 3. Since wear on the trolley track can cause the trolley 100 to deviate, if abnormalities are continuously observed on one side of the trolley 100's wheels during subsequent wheel testing, it is recommended to check the track.

[0052] S230: When La+Lb≠La0+Lb0 and La0-La>x, determine that the first wheel 120 is abnormal; when La+Lb≠La0+Lb0 and Lb0-Lb>x, determine that the second wheel 130 is abnormal.

[0053] Since the first wheel 120 and the second wheel 130 of the trolley 100 are always located between the two second measurement points, as long as the first wheel 120 and the second wheel 130 are normal, La+Lb will always be equal to La0+Lb0. However, when La+Lb≠La0+Lb0, it indicates that one or both of the first wheel 120 and the second wheel 130 are abnormal, affecting the position of the first measurement point, which in turn causes the detected distance value to be unequal to the standard distance value.

[0054] Specifically, when La0-La>x, the first wheel 120 is judged to be abnormal; when Lb0-Lb>x, the second wheel 130 is judged to be abnormal. Of course, when La0-La>x and Lb0-Lb>x, both the first wheel 120 and the second wheel 130 are abnormal. After judging that the first wheel 120 and / or the second wheel 130 are abnormal, the feedback is reflected in the wheel information. If the same situation is still shown in the next wheel, the difference is judged again. If there is an increasing trend, the wheel is prompted to be taken offline for inspection and maintenance as soon as possible; otherwise, it is observed and used.

[0055] It should be noted that x represents the allowable deviation range, where x is less than 1mm. When the values ​​of La0-La or Lb0-Lb are too large, it indicates wheel slippage. Specifically, when La+Lb≠La0+Lb0 and (La0-La)>x, the first wheel is judged to be abnormal (120). When La+Lb≠La0+Lb0 and (Lb0-Lb)>x, the steps for judging the second wheel (130) to be abnormal also include:

[0056] S240: When (La0-La)>y, determine that the first wheel 120 has fallen off; when (Lb0-Lb)>y, determine that the second wheel 130 has fallen off; where y represents the threshold for judging wheel falling off.

[0057] The value of y is 10mm. When a wheel is detected to have fallen off, a prompt will be made to track and check it and replace it as soon as possible.

[0058] It should be noted that the solution in this embodiment is implemented by programming in a logic programming controller (PLC). Obviously, the trolley working status detection method uses a processor to perform calculations. In addition, prompts can be issued through the display screen. The laser rangefinder 200, the processor, and the display screen are all connected to the PLC controller.

[0059] This application provides a method for detecting the working status of a trolley. By collecting the detection distance value La between the first measuring point of the first wheel 120 and the second measuring point on the same side, and the detection distance value Lb between the first measuring point of the second wheel 130 and the second measuring point on the same side, and comparing the detection distance values ​​La and Lb with the standard distance values ​​La0 and Lb0 under normal conditions, the method determines whether the working status of the trolley 100 is abnormal based on the comparison results. When the working status of the trolley 100 is determined to be abnormal, a prompt is issued. Thus, when the working status of the trolley 100 is abnormal, the operator will receive a prompt, thereby eliminating the need for manual judgment of the working status of the trolley 100 and avoiding the occurrence of inadequate manual maintenance to a certain extent.

[0060] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0061] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for detecting the working status of a trolley, characterized in that, The method is applied to a trolley working status detection system, the system comprising: The trolley includes a main body and a first wheel and a second wheel disposed on both sides of the main body. The first wheel and the second wheel are each provided with a first measuring point. The trolley track is provided with second measuring points at equal intervals on both sides, and the second measuring points are at the same height as the first measuring points. A laser rangefinder is correspondingly set at the second measurement point to collect the detection distance value La between the first measurement point of the first wheel and the second measurement point on the same side, and the detection distance value Lb between the first measurement point of the second wheel and the second measurement point on the same side. The testing platform is provided at equal intervals on both sides of the trolley track. The second measuring point is set on the testing platform, and the first measuring point is set on the upper part of the center point of the first wheel and the second wheel. The method includes: The detection distance value La between the first measurement point of the first wheel and the second measurement point on the same side and the detection distance value Lb between the first measurement point of the second wheel and the second measurement point on the same side are collected. The second measurement points are equally spaced on both sides of the trolley track, and the height of the second measurement points is the same as that of the first measurement point. The detection distance values ​​La and Lb are compared with La0 and Lb0. Based on the comparison results, it is determined whether the working state of the trolley is abnormal. When it is determined that the working state of the trolley is abnormal, a prompt is issued. La0 is the standard distance between the first measurement point of the first wheel and the second measurement point on the same side under normal conditions. Lb0 is the standard distance between the first measurement point of the second wheel and the second measurement point on the same side under normal conditions. The step of comparing the detection distance values ​​La and Lb with La0 and Lb0, and determining whether the trolley's working state is abnormal based on the comparison results includes: The value of La+Lb is compared with the value of La0+Lb0. When La+Lb=La0+Lb0, the wheels of the trolley are judged to be normal. When La+Lb≠La0+Lb0 and La0-La>x, the first wheel is determined to be abnormal; when La+Lb≠La0+Lb0 and Lb0-Lb>x, the second wheel is determined to be abnormal; where x represents the allowable deviation range.

2. The method for detecting the working status of a trolley as described in claim 1, characterized in that, The distance between the second measuring point and the trolley track is greater than 5mm.

3. The method for detecting the working status of a trolley as described in claim 1, characterized in that, The x is less than 1 mm.

4. The method for detecting the working status of a trolley as described in claim 1, characterized in that, The step of comparing the value of La+Lb with the value of La0+Lb0, and determining that the wheels of the trolley are normal when La+Lb=La0+Lb0, includes: The value of La0-La is compared with the value of Lb0-Lb. When La0-La≠Lb0-Lb for more than n consecutive times, it is determined that the trolley is deviating. Here, n represents the threshold of the number of consecutive detections.

5. The method for detecting the working status of a trolley as described in claim 4, characterized in that, The value of n is 3.

6. The method for detecting the working status of a trolley as described in claim 1, characterized in that, The step of determining the first wheel as abnormal when La+Lb≠La0+Lb0 and La0-La>x, and determining the second wheel as abnormal when La+Lb≠La0+Lb0 and Lb0-Lb>x, further includes: When La0-La>y, it is determined that the first wheel has fallen off; when Lb0-Lb>y, it is determined that the second wheel has fallen off; where y represents the threshold for judging wheel falling off.

7. The method for detecting the working status of a trolley as described in claim 6, characterized in that, The value of y is 10 mm.

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