A trolley automatic deviation correction system and method for a belt sintering machine

Abstract

This invention provides an automatic trolley correction system and method for a belt sintering machine, including a range measuring device group and a correction device disposed on the movable side of the head star wheel of the sintering machine. Multiple range measuring device groups are arranged at intervals along the running direction of the sintering machine trolley. Each range measuring device group includes two range measuring devices disposed opposite to each other on both sides of the sintering machine trolley. The monitoring end of each range measuring device is correspondingly disposed to the outer end face of the wheel of the sintering machine. The correction device includes two pushing components disposed opposite to each other on both sides of the head star wheel shaft. The pushing end of each pushing component abuts against the movable bearing seat of the head star wheel. By setting multiple range measuring device groups, the overall deviation of the sintering machine is obtained. When the overall deviation reaches a first preset threshold, the correction device is activated to correct the deviation. Furthermore, the severity level of the deviation is determined based on the overall deviation, and fine-tuning is performed through a graded, multi-stage, gradual approach, enabling timely adjustment and quantitative, scientific decision-making.

Description

Technical Field

[0001] This invention relates to the field of iron and steel smelting technology, and in particular to an automatic trolley correction system and method for belt sintering machines. Background Technology

[0002] The sintering machine plays a crucial role as one of the raw material supply devices for blast furnaces. The sintering machine trolley is primarily responsible for loading, igniting, sintering, and discharging sintered ore at the tail end along the running track. The belt sintering machine is a key piece of equipment in the sintering process. The entire operation is powered by the continuous rotation of star wheels, which drive the trolley in a cyclical motion. The head star wheel is powered and acts as the driving wheel, while the tail star wheel is unpowered and acts as the driven wheel. The sintering machine trolley consists of two sections: the upper sintering section and the lower return section. The trolleys are not interconnected; they are propelled by mutual compression. To accommodate the thermal deformation and elongation of the sintering machine trolley during operation (the average temperature can reach over 100℃), the tail star wheel can move back and forth within a certain range (approximately 150mm at the head and approximately 250mm at the tail). Because the head star wheel is fixed and the tail star wheel is movable, the trolley suspended on the tail star wheel exerts a backward pulling force on it, requiring a tail counterweight for balance to ensure the ring-shaped structure of the head and tail star wheels. The upper sintering section trolley is driven by the head star wheel, and the lower return stroke is driven by the weight of the trolley itself, in addition to the driving force of the head star wheel.

[0003] During operation, the belt sintering machine trolley experiences problems such as deviation. When this deviation occurs, the friction between the trolley wheels and the running track increases, leading to accelerated wear on both the wheels and the track, and shortening the equipment's lifespan. Figure 1 As shown, when the trolley is running normally on the running track, there is a gap S between the edge of the trolley wheel and the running track. Under adverse working conditions, it will deviate and the trolley will shift to one side, while the inner end face of the wheel on the other side will be squeezed against the running track. In severe cases, the trolley wheel will fall off, affecting the operation of the entire sintering machine.

[0004] Currently, there are some solutions for the deviation of the sintering machine trolley, such as adding guide rails on both sides of the trolley, adding oil between the trolley wheels and the running track to increase lubrication, and using the head adjustment device or tail counterweight of the sintering machine to correct the deviation. However, these solutions are all based on the known deviation of the existing sintering machine, which has obvious lag defects. Moreover, the deviation of the existing sintering machine depends entirely on the experience of the on-site personnel to judge, without scientific and effective judgment methods.

[0005] Furthermore, due to the large number of sintering machine trolleys in a belt sintering machine (typically more than 100 sintering machine trolleys and more than 400 trolley wheels in one sintering machine), some trolley wheels may deviate to the left and some to the right, making it difficult to judge the overall deviation of the sintering machine. After determining the deviation direction based on experience, measures to adjust the deviation are taken, which requires manual judgment of the effectiveness of the adjustment measures, which is time-consuming and labor-intensive. Moreover, after the sintering machine trolleys have been adjusted for deviation, the deviation phenomenon may change again after running for a period of time, requiring repeated manual inspection, which is also time-consuming and labor-intensive.

[0006] In view of this, it is necessary to propose an automatic trolley correction system and method for belt sintering machines to solve or at least alleviate the above-mentioned defects. Summary of the Invention

[0007] The main objective of this invention is to provide an automatic trolley correction system and method for belt sintering machines, in order to solve the problems that existing solutions for trolley deviation in sintering machines are all based on the existing deviation conditions of the sintering machine, which have obvious lag defects and rely entirely on the experience of on-site personnel to make judgments, without scientific and effective judgment methods.

[0008] To achieve the above objectives, the present invention provides an automatic deviation correction method for a sintering machine trolley, comprising a range measuring device group and a deviation correction device disposed on the movable side of the head star wheel of the sintering machine; the range measuring device group comprises multiple groups, which are arranged at intervals along the running direction of the sintering machine trolley; wherein,

[0009] Each of the distance measuring device groups includes two distance measuring devices that are disposed opposite to each other on both sides of the sintering machine trolley. Each distance measuring device is fixedly connected to the sintering machine frame. The monitoring end of each distance measuring device is disposed corresponding to the outer end face of the wheel of the sintering machine to measure the distance value between the outer end face of the wheel on both sides of the sintering machine trolley.

[0010] The correction device is fixedly connected to the sintering machine frame. The correction device includes two push assemblies that are arranged opposite to each other on both sides of the head star wheel shaft. The pushing end of each push assembly abuts against the movable bearing seat of the head star wheel.

[0011] Preferably, the system further includes an image acquisition device group, which is arranged adjacent to the ranging device group. Each image acquisition device group includes two image acquisition devices arranged opposite to each other on both sides of the sintering machine trolley. The image acquisition devices are used to acquire and identify the identification information of the corresponding sintering machine trolley.

[0012] Preferably, each of the pusher components includes a fixed base fixed to the sintering machine frame and a hydraulic drive cylinder; wherein, the hydraulic drive cylinder includes a fixed end and a pushing end disposed opposite to each other, the fixed end is fixedly connected to the fixed base, the pushing end abuts against the movable bearing of the head star wheel, and the pushing direction of the pushing end is perpendicular to the axial direction of the head star wheel shaft.

[0013] Preferably, the two ranging devices in each ranging device group are symmetrically arranged on both sides of the sintering machine trolley; the two pushing assemblies are symmetrically arranged on both sides of the head star wheel shaft; and the two image acquisition devices in each image acquisition device group are symmetrically arranged on both sides of the sintering machine trolley.

[0014] Preferably, it also includes a trolley number plate fixed to the side plate of the sintering machine trolley, the trolley number plate being flush with the acquisition end of the image acquisition device.

[0015] Preferably, the trolley number plate is made of stainless steel, and the stainless steel plate has hollowed-out lettering.

[0016] The present invention also provides a method for automatic trolley correction, applied to the above-described automatic trolley correction system, comprising the following steps:

[0017] S1, acquire the left wheel distance value and right wheel distance value detected by each of the ranging device groups;

[0018] S2, the absolute value of the difference between the left wheel distance value and the right wheel distance value corresponding to each of the distance measuring device groups is taken as the single-point deviation value;

[0019] S3. Obtain the overall deviation of the entire sintering machine based on the single-point deviation value corresponding to the multiple ranging device groups.

[0020] S4, when the overall deviation is greater than the first preset threshold, the correction device is activated to reduce the overall deviation to below the first preset threshold.

[0021] Preferably, step S4 further includes the following step before activating the correction device:

[0022] S31, Obtain the severity level of the sintering machine's deviation based on the overall deviation amount;

[0023] S32, Obtain the expected number of times the correction device will be adjusted according to the severity level of the deviation;

[0024] S33, obtain the adjustment feed amount for each start of the correction device based on the expected number of adjustment cycles.

[0025] Preferably, step S4 includes the following steps:

[0026] S41, obtain the first overall deviation amount of the sintering machine after the correction device is started once, and determine whether the first overall deviation amount is less than the first preset threshold.

[0027] S42, when the first overall deviation is less than the first preset threshold, it is determined that the sintering machine has returned to normal operating level;

[0028] S43, when the first overall deviation is greater than or equal to the first preset threshold, it is determined that the sintering machine is still in a deviation state, and the deviation correction device is restarted again, and the process returns to step S41.

[0029] Preferably, step S42 is followed by the step:

[0030] S5, determine whether the current single-point deviation value is greater than the second preset threshold;

[0031] S6, when the single-point deviation value is greater than the second preset threshold, obtain the identity information of the target sintering machine trolley detected by the image acquisition device corresponding to the wheel whose single-point deviation value is greater than the second preset threshold;

[0032] S7, obtain the current position of the target sintering machine trolley and the current running speed of the target sintering machine trolley based on the identity information;

[0033] S8, based on the current position and the current running speed, obtain the predicted time value for the target sintering machine trolley to run to the correction device;

[0034] S9, at the predicted time value, control the correction device to correct the deviation of the target sintering machine trolley so that the single-point deviation value of the target sintering machine trolley is reduced to below the second preset threshold.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] This invention provides an automatic trolley correction system and method for a belt sintering machine. By setting up a range measuring device group and a correction device set on the movable side of the head star wheel of the sintering machine, multiple range measuring device groups are arranged at intervals along the running direction of the sintering machine trolley. Each range measuring device group includes two range measuring devices arranged opposite to each other on both sides of the sintering machine trolley. The monitoring end of each range measuring device is set corresponding to the outer end face of the wheel of the sintering machine. The pushing end of each jacking component is abutted against the movable bearing seat of the head star wheel, which can correct the sintering machine trolley in a timely manner.

[0037] Specifically, by setting up multiple ranging device groups, the overall deviation of the sintering machine can be obtained. When the overall deviation reaches a first preset threshold, the correction device is activated to correct the deviation. By setting up an image acquisition device group, the position and identity information of the sintering machine trolley can be acquired in real time. Furthermore, based on the overall deviation, the severity level of the deviation is determined, and a graded, gradual adjustment process is implemented until it is adjusted to a reasonable range, achieving refined adjustment and enabling timely and quantitative scientific decision-making. On this basis, after the overall deviation of the sintering machine is corrected to a normal range, this application also performs time prediction and "individual" correction for individual sintering machine trolleys, thus achieving comprehensive and precise adjustment with limited ranging and image acquisition devices. This invention can remotely monitor all sintering machine trolleys in the production process in real time, automatically adjust and correct deviations without requiring workers to enter the sintering machine for inspection, thus enhancing safety, saving manpower and resources, and reducing operating costs. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0039] Figure 1 A schematic diagram of the structure of a sintering machine trolley in normal operation;

[0040] Figure 2 A schematic diagram of the sintering machine trolley after it has deviated from its intended path;

[0041] Figure 3 This is a schematic diagram of the arrangement of multiple monitoring points in one embodiment of the present invention;

[0042] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0043] Figure 5 This is a schematic diagram of the image recognition device in one embodiment of the present invention;

[0044] Figure 6 This is a schematic diagram of the structure of a sintering machine trolley in one embodiment of the present invention;

[0045] Figure 7 This is one of the application scenario diagrams in one embodiment of the present invention;

[0046] Figure 8 This is a schematic diagram of the structure of the correction device and the movable bearing seat in one embodiment of the present invention;

[0047] Figure 9 for Figure 8 A cross-sectional view along the BB direction;

[0048] Figure 10 This is a second application scenario diagram in one embodiment of the present invention;

[0049] Figure 11 This is a flowchart illustrating one embodiment of the present invention.

[0050] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0051] Explanation of icon numbers:

[0052] 10. Distance measuring device; 110. Distance measuring point one; 120. Distance measuring point two; 130. Distance measuring point three; 140. Distance measuring point four; 20. Image acquisition device; 210. Image acquisition point one; 220. Image acquisition point two; 230. Image acquisition point three; 240. Image acquisition point four; 30. Correction device; 310. Pushing assembly; 311. Fixed base; 312. Hydraulic drive cylinder; 40. Sintering machine; 410. Sintering machine frame; 420. Head star wheel; 421. Head star wheel shaft; 430. Movable bearing seat; 431. Self-aligning roller bearing; 432. Slide plate; 440. Sintering machine trolley; 441. Wheels of sintering machine trolley; 442. Trolley number plate; 450. Running track. Detailed Implementation

[0053] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0054] 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.

[0055] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0056] Furthermore, the use of terms such as "first" and "second" in this invention is 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.

[0057] Please see the appendix Figure 1-10 An embodiment of the present invention provides an automatic correction method for a sintering machine trolley, comprising a ranging device group (not shown in the figure) and a correction device 30 disposed on the movable side of the head star wheel 420 of the sintering machine 40; the ranging device group is multiple, and the multiple ranging device groups are arranged at intervals along the running direction of the sintering machine trolley 440. First, it should be noted that the common practice in the prior art to correct the deviation of the sintering machine 40 is to use an adjustment device at the head star wheel 420, that is, to set one end of the head star wheel shaft 421 of the sintering machine 40 in a fixed form, and the other end in a form that allows movement within a certain range. In other words, both ends of the head star wheel shaft 421 of the sintering machine 40 are fixed to the sintering machine frame 410 by a fixed side bearing seat and a free side bearing seat, respectively. For example, refer to the "Sintering Machine Drive Device with Adjustment Mechanism" disclosed in CN102072660A. The deviation of the sintering machine trolley 440 is corrected by adjusting the position of the movable side bearing seat. However, current technologies are all based on the known deviation of the existing sintering machine 40, which has obvious lag defects. Furthermore, the deviation of the existing sintering machine 40 relies entirely on the experience of on-site personnel to judge, without a scientific and effective judgment method.

[0058] To address the shortcomings of the prior art, this application deploys multiple distance measuring device groups at various locations on the running track 450 of the sintering machine 40. These distance measuring device groups can acquire the distance values ​​from the outer end faces of the wheels 441 of the sintering machine trolley in real time. Based on these distance values, a hierarchical and comprehensive monitoring and adjustment method is established, thereby achieving real-time monitoring, timely adjustment, and scientific and quantitative decision-making.

[0059] In detail, each of the distance measuring device groups includes two distance measuring devices 10 disposed opposite to each other on both sides of the sintering machine trolley 440. Each distance measuring device 10 is fixedly connected to the sintering machine frame 410. The monitoring end of each distance measuring device 10 is disposed corresponding to the outer end face of the wheel of the sintering machine 40, for measuring the distance value between the outer end face of the wheel 441 on both sides of the sintering machine trolley.

[0060] Specifically, the monitoring principle of the ranging device group is further explained. During normal operation of the sintering machine trolley 440, the distance difference between the two ranging devices 10 in each ranging device group and the end face of the wheel 441 of the sintering machine trolley is basically within a constant range. Ideally, the difference is a fixed value. However, when the sintering machine trolley 440 deviates from its course, the wheel 441 will shift to one side, and the other wheel will be pressed against the running track 450. At this time, the distance between the monitoring end of the ranging device 10 and the outer end face of the vehicle changes, possibly increasing or decreasing. Based on this, by judging the change value, it can be determined whether the sintering machine trolley 440 corresponding to the ranging device group has experienced a relatively serious deviation. Then, as needed, the deviation correction device 30 is controlled to correct its deviation.

[0061] The correction device 30 is fixedly connected to the sintering machine frame 410. The correction device 30 includes two push assemblies 310 arranged opposite to each other on both sides of the head star wheel shaft 421. The pushing end of each push assembly 310 abuts against the movable bearing seat 430 of the head star wheel 420.

[0062] In detail, the principle and process of the deviation correction device 30 are explained: The deviation correction device 30 is used to adjust the movable bearing seat of the head star wheel 420 to adjust the deviation of the sintering machine trolley 440. For example... Figure 7-10 As shown, the movable bearing seat 430 of the head star wheel 420 typically has a certain range of movement, such as (-30, +30) mm. The bearing seat uses a self-aligning roller bearing 431, which allows for a certain self-aligning angle, thus accommodating the movement of the head star wheel 420 within this range. This range is the working range of the pushing assembly 310. The movable bearing seat 430 is a standard bearing seat bolted to the slide plate 432, which can move within a certain range of the fixed seat 311. When the correction device 30 pushes to the right, it will push the wheels 441 of the sintering machine trolley upwards to column A; when the correction device 30 pushes to the left, it will push the sintering machine trolley 440 downwards to column B. This achieves the purpose of correcting the alignment of the sintering machine trolley 440. The movement range of the jacking component 310 can be precisely set. For example, if the trolley is currently misaligned by 15mm towards column A, it is recommended to move the jacking device 10mm to the left. After adjustment, observe the misalignment of the trolley again. Continuously adjust until the ideal operating condition is achieved.

[0063] Of course, those skilled in the art can also achieve some functions in other ways as needed, such as adding measuring rods on both sides of the trolley. When the trolley that is going astray passes the measuring rod, the rod is pushed outward. The pushing distance is the distance the trolley goes astray. However, the required additional structure is too large and the reliability is not strong.

[0064] The ranging device 10 can be an ultrasonic sensor, an infrared sensor, a laser sensor, etc., which has the characteristics of high accuracy and good applicability, and can obtain high-precision distance values ​​in real time to facilitate corresponding judgments.

[0065] In a preferred embodiment, an image acquisition device group (not shown) is also included. This group is arranged adjacent to the ranging device group. Each image acquisition device group includes two image acquisition devices 20 positioned opposite each other on either side of the sintering machine trolley 440. The image acquisition devices 20 are used to acquire and identify the corresponding identification information of the sintering machine trolley 440. It is worth noting that, to further lock onto the identification and location information of each sintering machine trolley 440 for more precise adjustment, control, and analysis, this embodiment uses the image acquisition device group located next to the ranging device group. The image acquisition device 20 can be an industrial camera, or alternatively, a RFID tag, chip reader, or any other method capable of identifying the identification information of the sintering machine trolley 440. It is able to acquire the identification and location information of the sintering machine trolley 440 corresponding to the image acquisition device 20.

[0066] In a preferred embodiment, each of the pusher assemblies 310 includes a fixed base 311 fixed to the sintering machine frame 410 and a hydraulic drive cylinder 312; wherein, the hydraulic drive cylinder 312 includes a fixed end (not shown) and a pushing end (not shown) disposed opposite to each other, the fixed end is fixedly connected to the fixed base 311, the pushing end abuts against the movable bearing of the head star wheel 420, and the pushing direction of the pushing end is perpendicular to the axial direction of the head star wheel shaft 421.

[0067] In this embodiment, the push assembly 310 is driven by a hydraulic drive cylinder 312. When adjustment and correction are required, the hydraulic drive cylinder 312 is controlled to drive the movable bearing seat 430 to move along the axis of the sintering machine frame 410. It should be noted that the push assembly 310 in this embodiment includes, but is not limited to, a hydraulic drive cylinder 312. For example, it can also be an electric push rod, a drive cylinder, or a drive motor with gear transmission. Those skilled in the art can select the appropriate method according to actual needs, as long as it can smoothly push the movable bearing seat 430. It is important to note that the two opposing hydraulic drive cylinders 312 need to be controlled to maintain linkage during pushing; that is, when the drive end of one hydraulic drive cylinder 312 extends, the drive end of the other hydraulic drive cylinder 312 needs to retract a certain distance accordingly, so that they work together to achieve adjustment.

[0068] Furthermore, the two ranging devices 10 in each ranging device group are symmetrically arranged on both sides of the sintering machine trolley 440; the two pushing assemblies 310 are symmetrically arranged on both sides of the head star wheel shaft 421; and the two image acquisition devices 20 in each image acquisition device group are symmetrically arranged on both sides of the sintering machine trolley 440.

[0069] In this embodiment, the symmetrical arrangement improves monitoring accuracy. For example, the average value of the two ranging devices 10 in each ranging device group is used as the basis for judging whether the sintering machine trolley 440 is off-track, thus improving monitoring accuracy. Theoretically, to display the off-track amount of all sintering machine trolleys 440, each trolley needs to be measured in real time. This requires each trolley wheel to correspond to a ranging device group and a corresponding image acquisition device group to obtain real-time off-track data for statistical analysis.

[0070] Considering the large number of trolleys (more than 100, with more than 400 wheels), system cost and complexity, we usually set up several monitoring points. Based on the deviation of each trolley at the monitoring point, we calculate the deviation of the entire sintering machine trolley 440 at that monitoring point, and obtain the deviation of the entire sintering machine 40 at that point.

[0071] Because the running track 450 of the sintering machine 40 is long, the deviation of the sintering machine 40 during operation may change. In an optional embodiment, the number of the ranging device group and the image acquisition device group are both four. Please refer to the appendix again. Figure 3 The measuring points are located at distance measuring point 110 and image acquisition point 210 on the upper horizontal running track 450 at the head of the sintering machine 40, and distance measuring point 140 and image acquisition point 240 on the lower horizontal running track 450. At the tail of the sintering machine 40, the measuring points are located at distance measuring point 120 and image acquisition point 220 on the upper horizontal running track 450, and distance measuring point 130 and image acquisition point 230 on the lower horizontal running track 450. For more accurate measurements, additional monitoring points can be set in the middle section.

[0072] As another preferred embodiment, it also includes a trolley number plate 442 fixed to the side plate of the sintering machine trolley 440, the trolley number plate 442 being flush with the acquisition end of the image acquisition device 20.

[0073] In this embodiment, by setting the trolley number plate 442 on the outer side plate of each sintering machine trolley 440, when each sintering machine trolley 440 runs into the effective acquisition range of the image acquisition device 20, the number information and position information of the current sintering machine trolley 440 can be obtained. Combined with the current running speed of the sintering machine 40, the position of each sintering machine trolley 440 can be calculated, so as to facilitate the control and monitoring of each sintering machine trolley 440 and make targeted adjustments.

[0074] Furthermore, the trolley number plate 442 is made of stainless steel, and hollowed-out lettering is formed on the stainless steel plate.

[0075] Please see the appendix Figure 11 The present invention also provides a method for automatic trolley correction, applied to the above-described automatic trolley correction system, comprising the following steps:

[0076] S1, acquire the left wheel distance value and right wheel distance value detected by each of the ranging device groups;

[0077] S2, the absolute value of the difference between the left wheel distance value and the right wheel distance value corresponding to each of the distance measuring device groups is taken as the single-point deviation value;

[0078] S3. Obtain the overall deviation of the entire sintering machine based on the single-point deviation value corresponding to the multiple ranging device groups.

[0079] S4, when the overall deviation amount is greater than the first preset threshold, the correction device 30 is activated to reduce the overall deviation amount to below the first preset threshold.

[0080] In detail, the two ranging devices 10 in each ranging device group are used to monitor the left and right wheels of the sintering machine trolley 440, respectively. The absolute value of the difference is obtained by subtracting the distance values ​​of the left and right wheels. It can be understood that half of the absolute value obtained by each ranging device group can be regarded as the current deviation of the sintering machine trolley 440. Since there are many sintering machine trolleys 440 in the entire sintering machine 40, and adjacent sintering machine trolleys 440 are in a linked state, this application uses multiple ranging device groups to average the absolute values ​​of the differences obtained by multiple ranging device groups, or assigns a weight to each ranging device group to obtain the overall deviation of the entire sintering machine 40. When the overall deviation of the sintering machine trolley 440 is greater than a preset threshold, it indicates that most of the sintering machine trolleys 440 are in a relatively serious deviation state. At this time, the correction device 30 is activated to reduce the overall deviation to a normal and reasonable range.

[0081] Furthermore, step S4 includes the following step before activating the correction device 30:

[0082] S31, Obtain the severity level of the sintering machine's deviation based on the overall deviation amount;

[0083] S32, Obtain the expected number of times the correction device will be adjusted according to the severity level of the deviation;

[0084] S33, obtain the adjustment feed amount for each start of the correction device based on the expected number of adjustment cycles.

[0085] Those skilled in the art should know that the trolley's running speed is typically 1–3 m / min, and its length is 1–1.5 m. The time for two adjacent trolleys to pass a certain point is approximately 0.33–1 minute. Therefore, within the operating range of each sintering machine trolley 440, it can be adjusted multiple times, and further judgment can be made based on the feedback after the adjustment. As a specific example, the suggested adjustment feed amount for each adjustment is given based on the overall deviation of the sintering machine 40 and the expected number of adjustment times.

[0086]

[0087] In this embodiment, by using a graded and multiple adjustment method, the overall deviation of the sintering machine trolley 440 can be precisely adjusted to within the normal range. Furthermore, by adopting a gradual approach, sudden deviations in all trolleys can be avoided, and the gradual and feedback-based approach achieves precise adjustment.

[0088] In a preferred embodiment, step S4 includes the following steps:

[0089] S41, obtain the first overall deviation amount of the sintering machine 40 after the correction device 30 is started once, and determine whether the first overall deviation amount is less than the first preset threshold.

[0090] S42, when the first overall deviation is less than the first preset threshold, it is determined that the sintering machine 40 has returned to normal operating level;

[0091] S43, when the first overall deviation is greater than or equal to the first preset threshold, it is determined that the sintering machine 40 is still in a deviation state, and the deviation correction device 30 is restarted again, and the process returns to step S41.

[0092] It should be noted that after the first activation of the correction device 30 pushes the movable bearing seat 430 of the head star wheel 420, the first overall deviation amount after adjustment is recalculated. Then, it is determined whether the correction is successful based on whether the first overall deviation amount is less than the first preset threshold. If the first overall deviation amount is greater than or equal to the first preset threshold, it means that the adjustment is not yet successful. The process returns to step S41 and the correction device 30 is activated for the second time to push and adjust. This process is repeated and judged until the overall deviation amount of the sintering machine 40 returns to the normal range.

[0093] In a preferred embodiment, step S42 is followed by the following step:

[0094] S5, determine whether the current single-point deviation value is greater than the second preset threshold;

[0095] S6, when the single-point deviation value is greater than the second preset threshold, the identity information of the target sintering machine trolley 440 detected by the image acquisition device 20 corresponding to the wheel whose single-point deviation value is greater than the second preset threshold is obtained;

[0096] S7. Obtain the current position of the target sintering machine trolley 440 and the current running speed of the target sintering machine trolley 440 based on the identity information.

[0097] S8, based on the current position and the current running speed, obtain the predicted time value for the target sintering machine trolley 440 to run to the correction device 30;

[0098] S9, at the predicted time value, the correction device 30 is controlled to correct the deviation of the target sintering machine trolley 440 so that the single-point deviation value of the target sintering machine trolley 440 is reduced to below the second preset threshold.

[0099] It is worth noting that when the overall deviation of the sintering machine 40 is less than the first preset threshold, since the overall deviation is calculated by multiple ranging device groups, although the overall deviation of the sintering machine 40 has been adjusted to the normal range, there may still be one or more sintering machine trolleys 440 corresponding to ranging devices 10 that are still out of range. Therefore, this embodiment further uses the method of judging whether the absolute value of each ranging device group is greater than the second preset threshold, combined with the image acquisition device 20, to find the position and identity information of the corresponding sintering machine trolleys 440 that are out of range. Then, they are corrected individually.

[0100] Furthermore, it should be noted that since the installation positions of the ranging device 10 and the image acquisition device 20 are relatively fixed, and the sintering machine trolley 440 can be considered to be in a uniform speed running state under normal operating conditions, the time it takes for each sintering machine trolley 440 to reach the correction device 30 can be predicted, which is the predicted time value referred to in this embodiment. When the predicted time arrives, the head star wheel 420 is pushed to perform individual correction. After the corrected sintering machine trolley 440 and the following sintering machine trolleys 440 have passed the head star wheel 420, the original position of the head star wheel 420 is restored, thereby ensuring that all sintering machine trolleys 440 are within the normal operating range as much as possible.

[0101] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. An automatic trolley alignment system for a belt sintering machine, characterized in that, The system includes a range measuring device group and a deviation correction device located on the movable side of the head star wheel of the sintering machine. Multiple range measuring device groups are arranged at intervals along the running direction of the sintering machine trolley, and the overall deviation of the sintering machine is obtained using these multiple groups. Each of the distance measuring device groups includes two distance measuring devices that are disposed opposite to each other on both sides of the sintering machine trolley. Each distance measuring device is fixedly connected to the sintering machine frame. The monitoring end of each distance measuring device is disposed corresponding to the outer end face of the wheel of the sintering machine to measure the distance value between the outer end face of the wheel on both sides of the sintering machine trolley. The correction device is fixedly connected to the sintering machine frame. The correction device includes two push assemblies that are oppositely arranged on both sides of the head star wheel shaft. The pushing end of each push assembly abuts against the movable bearing seat of the head star wheel. Two ranging devices in each ranging device group are symmetrically arranged on both sides of the sintering machine trolley; two jacking assemblies are symmetrically arranged on both sides of the head star wheel shaft.

2. The automatic trolley correction system according to claim 1, characterized in that, It also includes an image acquisition device group, which is arranged adjacent to the ranging device group. Each image acquisition device group includes two image acquisition devices arranged opposite to each other on both sides of the sintering machine trolley. The image acquisition devices are used to collect and identify the identification information of the corresponding sintering machine trolley.

3. The automatic trolley correction system according to claim 2, characterized in that, Each of the pusher assemblies includes a fixed base fixed to the sintering machine frame and a hydraulic drive cylinder; wherein the hydraulic drive cylinder includes a fixed end and a pushing end disposed opposite to each other, the fixed end is fixedly connected to the fixed base, the pushing end abuts against the movable bearing of the head star wheel, and the pushing direction of the pushing end is perpendicular to the axial direction of the head star wheel shaft.

4. The automatic trolley correction system according to claim 2, characterized in that, Two image acquisition devices in each image acquisition device group are symmetrically arranged on both sides of the sintering machine trolley.

5. The automatic trolley correction system according to claim 3, characterized in that, It also includes a trolley number plate fixed to the side plate of the sintering machine trolley, the trolley number plate being flush with the acquisition end of the image acquisition device.

6. The automatic trolley correction system according to claim 5, characterized in that, The trolley number plate is made of stainless steel, and the stainless steel plate has hollowed-out lettering.

7. A method for automatic trolley correction, characterized in that, The system applied to the automatic trolley alignment system as described in any one of claims 1-6 includes the following steps: S1, acquire the left wheel distance value and right wheel distance value detected by each of the ranging device groups; S2, the absolute value of the difference between the left wheel distance value and the right wheel distance value corresponding to each of the distance measuring device groups is taken as the single-point deviation value; S3. Obtain the overall deviation of the entire sintering machine based on the single-point deviation value corresponding to the multiple ranging device groups. S4, when the overall deviation is greater than the first preset threshold, the correction device is activated to reduce the overall deviation to below the first preset threshold.

8. The automatic trolley correction method according to claim 7, characterized in that, Step S4 includes the following step before activating the correction device: S31, Obtain the severity level of the sintering machine's deviation based on the overall deviation amount; S32, Obtain the expected number of times the correction device will be adjusted according to the severity level of the deviation; S33, obtain the adjustment feed amount for each start of the correction device based on the expected number of adjustment cycles.

9. The automatic trolley correction method according to claim 8, characterized in that, Step S4 includes the following steps: S41, obtain the first overall deviation amount of the sintering machine after the correction device is started once, and determine whether the first overall deviation amount is less than the first preset threshold. S42, when the first overall deviation is less than the first preset threshold, it is determined that the sintering machine has returned to normal operating level; S43, when the first overall deviation is greater than or equal to the first preset threshold, it is determined that the sintering machine is still in a deviation state, and the deviation correction device is restarted again, and the process returns to step S41.

10. The automatic trolley correction method according to claim 9, characterized in that, The step S42 is followed by the following step: S5, determine whether the current single-point deviation value is greater than the second preset threshold; S6, when the single-point deviation value is greater than the second preset threshold, obtain the identity information of the target sintering machine trolley detected by the image acquisition device corresponding to the wheel whose single-point deviation value is greater than the second preset threshold; S7, obtain the current position of the target sintering machine trolley and the current running speed of the target sintering machine trolley based on the identity information; S8, based on the current position and the current running speed, obtain the predicted time value for the target sintering machine trolley to run to the correction device; S9, at the predicted time value, control the correction device to correct the deviation of the target sintering machine trolley so that the single-point deviation value of the target sintering machine trolley is reduced to below the second preset threshold.

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