A monitoring device and method for the sealing state of a sintering trolley

Abstract

The application discloses a kind of monitoring device and method of sintering trolley sealing state, belong to metallurgical sintering equipment technical field.The device includes two groups of detection units, two groups of detection units are respectively set in the two fixed slides of sintering machine and the two fixed slides of sintering trolley movable sealing slide plate form sealing pair, and the detection units in two fixed slides are arranged side by side;The detection unit includes detection slide and pressure sensor, the bottom surface of the detection slide is spaced apart along the length direction of itself N pressure sensors, and the detection slide is set on the blast box of sintering machine by multiple pressure sensors.The present application can directly detect the sealing pressure between movable sealing slide plate of sintering trolley and fixed slide, and provide effective data support for sintering trolley sealing state evaluation.

Description

Technical Field

[0001] This invention relates to the field of metallurgical sintering equipment technology, specifically to a monitoring device and method for the sealing status of a sintering trolley, which is particularly suitable for detecting the sealing pressure between the movable sealing slide plate and the fixed slide rail of a belt sintering machine trolley. Background Technology

[0002] The belt sintering machine is a core piece of equipment in the steel sintering process. The movable sealing plate at the bottom of the trolley forms a sealing pair with the fixed slide rail on the frame, which is a key component for controlling air leakage in the sintering machine. Under long-term high temperature, dust, and reciprocating friction conditions, the sealing plate is prone to wear and thinning, loss of elasticity, jamming and deformation, and detachment or loss. This leads to increased sealing gaps, a surge in system air leakage, increased fan energy consumption, affected sinter quality, and even equipment accidents such as slide rail scraping and trolley jamming.

[0003] Currently, the detection of the sealing status of the sintering machine trolley mainly relies on manual inspection during machine shutdown, which has the following problems: First, it is impossible to directly obtain the actual clamping force between the movable sealing slide and the fixed slide while the sintering machine is running, resulting in a lack of quantitative data; second, existing attempts to install sensors will damage the integrity and sealing of the fixed slide, leading to increased air leakage in the sintering machine; third, the sensors are directly exposed to high temperature, dust, and impact conditions, making them unstable, easily damaged, and difficult to work reliably for a long time.

[0004] Therefore, there is an urgent need for a monitoring device that can directly and stably detect the sealing clamping force during the operation of the sintering machine without affecting the original sealing effect, so as to solve the problem that the existing technology cannot quantify the detection of the sealing status. Summary of the Invention

[0005] The purpose of this invention is to provide a monitoring device for the sealing status of a sintering trolley, aiming to solve the technical problems of the lack of quantitative detection methods for the sealing status of existing sintering trolleys and the impact of sensor installation on sealing performance. The specific technical solution is as follows: A monitoring device for the sealing status of a sintering trolley, wherein a set of detection units is provided in each of the two fixed slides on the sintering machine that form a sealing pair with the movable sealing slide plate of the sintering trolley, and the detection units in the two fixed slides are arranged side by side. The detection unit includes a detection slide and pressure sensors. The bottom surface of the detection slide is provided with N pressure sensors at intervals along its own length. The detection slide is supported by multiple pressure sensors and is set on the sintering machine air box, where N is a natural number greater than or equal to 2.

[0006] Preferably, the detection unit further includes a U-shaped sealing seat fixedly mounted on the bellows, the lower part of the detection slide is movably mounted in the U-shaped sealing seat, and the pressure sensor is located below the bottom surface of the detection slide; The detection slide is provided with multiple countersunk holes at intervals along its length. The U-shaped sealing seat is provided with a through hole. A fixing bolt is used to pass through the countersunk holes and the through hole to connect the air box. A vertical gap is left between the bolt head of the fixing bolt and the step of the countersunk hole. The gap between the U-shaped sealing seat and the detection slide is filled with grease for sealing.

[0007] Preferably, the bottom of the U-shaped sealing seat is provided with N clearance openings at intervals along its own length, the bottom surface of the detection slide is provided with N clearance cavities corresponding to its own length, the pressure sensor is disposed on the air box and is located in both the clearance openings and clearance cavities, and the detection slide is disposed on the pressure sensor.

[0008] Preferably, the bottom surface of the detection slide has N clearance cavities along its length, and the pressure sensor is disposed on the bottom surface of the groove of the U-shaped sealing seat. The pressure sensor is located in the clearance cavity and supports the detection slide.

[0009] Preferably, the cross-section of the detection slide is an inverted convex shape, the cross-section of the U-shaped sealing seat is a concave shape, and the protrusion of the detection slide is disposed in the groove of the U-shaped sealing seat.

[0010] Preferably, a sliding sleeve is fitted onto the fixing bolt, and the small-diameter section of the countersunk hole slides in contact with the sliding sleeve.

[0011] Preferably, the U-shaped sealing seat and the detection slide are of equal length, and the length of the detection slide is 0-3mm longer than the length of the movable sealing slide plate on the sintering trolley.

[0012] Preferably, a gap is left between the detection slide and the fixed slides at both ends, and the gap between the detection slide and the fixed slide is sealed with grease; The upper surface of the detection slide is flush with the upper surface of the fixed slide.

[0013] Preferably, it also includes a visual recognition device for acquiring an image of the sintering trolley's trolley number plate.

[0014] The present invention also provides a monitoring method using the aforementioned sintering trolley sealing status monitoring device, comprising: Set the pressure range for normal operation of the sintering trolley; The sintering trolley number currently being inspected is obtained through a visual recognition device; The pressure sensor is used to obtain the pressure value when the movable sealing slide plate of the sintering trolley being tested is completely placed on the test slide. By comparing the pressure detection value with the set pressure range, the sealing status of the current sintering trolley can be obtained.

[0015] The application of the technical solution of the present invention has the following beneficial effects: This invention, by setting up a pressure sensor and a floating detection slide, can directly obtain the pressure change between the movable sealing slide and the fixed slide while the sintering trolley is running, providing a quantitative basis for sealing status assessment and replacing manual shutdown inspection.

[0016] The present invention installs the detection slide inside the U-shaped sealing seat, and uses sludge and / or grease to fill the gap to form a seal. The upper surface of the detection slide is flush with the upper surface of the fixed slide, and the whole is embedded in the fixed slide. This does not affect the original sealing system of the sintering machine and avoids aggravation of air leakage.

[0017] The pressure sensor of the present invention is located below the detection slide and is accommodated by a relief cavity, or a combination of a relief cavity and a relief port, to avoid the pressure sensor being directly exposed to high temperature dust impact, and at the same time to prevent the thickness of the pressure sensor itself from causing the gap between the detection slide and the U-shaped sealing seat to be too large, resulting in poor sealing effect.

[0018] The present invention leaves a vertical gap between the bolt head and the countersunk hole step, which, together with the guide of the sliding sleeve, ensures that the detection slide floats smoothly and is not stuck; the horizontal displacement is restricted by the fixing bolt and the sliding sleeve, and only the vertical degree of freedom is retained, making the structure simple and reliable; the U-shaped sealing seat and the detection slide are designed separately, which facilitates disassembly and replacement.

[0019] The sintering trolley sealing status monitoring method of the present invention, by pre-setting a normal operating pressure range, automatically acquires the trolley number using a visual recognition device and binds it to the pressure detection value. Pressure data is collected when the trolley's movable sealing slide plate is fully on the detection track and compared with a set threshold to quantitatively determine whether the sealing status is normal and whether there are faults such as jamming or wear failure. This method can automatically complete pressure acquisition, status determination, and faulty trolley location during sintering trolley operation without stopping the machine for troubleshooting, effectively avoiding the subjectivity and missed detection problems of manual inspection. Furthermore, this method can flexibly configure the number of sensors according to different slide plate specifications and supports the storage and traceability of historical pressure data, providing a reliable data foundation for slide plate life prediction and maintenance plan optimization.

[0020] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a cross-sectional view of the sintering trolley sealing status monitoring device in Example 1 along the transverse direction; Figure 2 yes Figure 1 A magnified view of a portion of the detection unit at point A in the middle; Figure 3 yes Figure 2 A schematic diagram of the detection unit structure in the D direction; Figure 4 yes Figure 3 Sectional view at point BB; Figure 5 yes Figure 3 Sectional view at CC; Figure 6 yes Figure 3 Schematic diagram of the U-shaped sealing seat; Figure 7 yes Figure 3 Schematic diagram of the structure of the detection slide; Figure 8 This is a flowchart of the monitoring method in Example 2; Among them, 1. Sintering trolley, 2. Trolley number plate, 3. Visual recognition device, 4. Air box, 5. Frame, 6. Movable sealing slide plate, 7. Detection slide, 7.1. Countersunk hole, 7.2. Clearance cavity, 8. U-shaped sealing seat, 8.1. Clearance opening, 9. Pressure sensor, 10. Fixed slide, 11. Fixed bolt, 12. Fixed nut, 13. Sliding sleeve. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more complete description is provided below, along with preferred embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0024] Example 1: See Figures 1-7 This embodiment provides a monitoring device for the sealing status of a sintering trolley, including two sets of detection units. The two sets of detection units are respectively set in two fixed slides 10. The fixed slides 10 achieve a sealing effect with the movable sealing slide plate 6 on the sintering trolley 1 during operation. The detection units in the two fixed slides 10 are arranged side by side so that the sealing pressure of the movable sealing slide plate of a single sintering trolley 1 is fully applied to the two sets of detection units. The detection unit includes a detection slide 7 and pressure sensors 9. The bottom surface of the detection slide 7 is provided with N pressure sensors 9 at intervals along its own length. The detection slide 7 is supported by multiple pressure sensors 9 and is set on the sintering machine air box 4, where N is a natural number greater than or equal to 2. The N pressure sensors are preferably arranged at equal intervals.

[0025] Specifically, during the travel of the sintering trolley 1, a sealing pair is formed between the movable sealing slide plate 6 and the fixed slide rail 10 of the sintering trolley 1. When the sealing pressure of the sintering trolley 1 is fully applied to the two sets of detection units, the specific value of the sealing pressure can be detected by the pressure sensor 9, thereby achieving the purpose of judging the sealing status of the sintering trolley.

[0026] Since the detection slide 7 needs to have the characteristic of slight vertical movement, this embodiment needs to prevent the gap between the detection slide 7 and the sintering machine air box 4 from affecting the sealing effect between the sintering trolley 1 and the fixed slide 10, resulting in air leakage.

[0027] like Figures 2-7 As shown, the detection unit in this embodiment also includes a U-shaped sealing seat 8 fixedly mounted on the bellows 4, the lower part of the detection slide 7 is movably mounted in the U-shaped sealing seat 8, and the pressure sensor 9 is located below the bottom surface of the detection slide 7; The detection slide 7 is provided with multiple countersunk holes 7.1 at intervals along its length. The U-shaped sealing seat 8 is provided with a through hole. A fixing bolt 11 is used to pass through the countersunk holes 7.1 and the through hole to connect the air box 4. A vertical gap is left between the bolt head of the fixing bolt 11 and the step of the countersunk hole 7.1 to meet the requirement that the detection slide 7 can move vertically.

[0028] Those skilled in the art will understand that the countersunk hole 7.1 includes a large-diameter section and a small-diameter section, which are coaxial, interconnected, and form a step. After the fixing bolt 11 is inserted into the countersunk hole 7.1, the bolt head of the fixing bolt 11 remains in the large-diameter section. The vertical gap between the bolt head and the step provides freedom for the vertical movement of the detection slide 7, thereby allowing the detection slide 7 to move vertically. When the sintering trolley 1 passes through the detection slide 7, the sealing pressure of the sintering trolley 1 can be fully transmitted to the pressure sensor 9.

[0029] Preferably, the fixing bolt 11 passes through the side beam of the air box 4 and is then fixed with a fixing nut 12. Of course, in some embodiments, threaded holes may be made in the side beam of the air box 4 to achieve the fixing effect. The air box 4 is mounted on the sintering machine frame 5, which is an existing structural design of the sintering machine; for details of the specific structure, please refer to the prior art.

[0030] Furthermore, after the detection slide 7 is installed in the U-shaped sealing seat 8, a gap of approximately 1-3 mm will be formed between the two to ensure that the detection slide 7 can move freely in the vertical direction to achieve sealing pressure detection. At the same time, since grease is used to lubricate the sealing pair during the movement of the sintering trolley 1, and the grease combines with dust in the air to form sludge, the grease and / or sludge can fill the gap between the detection slide 7 and the U-shaped sealing seat 8, thereby forming a sealing effect and preventing the monitoring device from causing air leakage in the sintering machine.

[0031] Specifically, the size of the gap between the U-shaped sealing seat 8 and the detection slide 7 directly affects the sealing effect of the grease and / or sludge. To control the gap between the U-shaped sealing seat 8 and the detection slide 7, in this embodiment, N clearance openings 8.1 are spaced apart along the length of the bottom of the U-shaped sealing seat 8, and N clearance cavities 7.2 are correspondingly provided along the length of the bottom surface of the detection slide 7. The pressure sensor 9 is mounted on the air box 4 and simultaneously located in both the clearance openings 8.1 and the clearance cavities 7.2, and the detection slide 7 is mounted on the pressure sensor 9. Due to the presence of the clearance openings 8.1 and the clearance cavities 7.2, the thickness of the pressure sensor 9 will not affect the gap between the bottom surface of the detection slide 7 and the bottom surface of the groove of the U-shaped sealing seat 8, preventing poor sealing due to an excessively large gap. Simultaneously, the gap between the clearance openings 8.1 and the pressure sensor 9 can be filled with grease or a high-temperature resistant sealant to prevent air leakage.

[0032] In this embodiment, an avoidance opening 8.1 is provided on the U-shaped sealing seat 8, and an avoidance cavity 7.2 is provided on the detection slide 7. This can reduce the installation difficulty of the U-shaped sealing seat 8 and the detection slide 7, and facilitate the maintenance and replacement of the detection unit in the future.

[0033] Furthermore, in order to extend the sealing path between the detection slide 7 and the U-shaped sealing seat 8, in this embodiment, the cross-section of the detection slide 7 is an inverted convex shape, and the cross-section of the U-shaped sealing seat 8 is a concave shape. The boss of the detection slide 7 is disposed in the groove of the U-shaped sealing seat 8 to achieve a concave-convex fit.

[0034] Specifically, the detection slide 7 includes a slide section and an embedding section. The embedding section is located below the slide section, and its width is smaller than that of the slide section, thus making the cross-section of the detection slide 7 an inverted U-shape. The slide section is used to form a sealing pair with the movable sealing slide plate 6 of the sintering trolley, and the embedding section (i.e., the boss) is used to cooperate with the U-shaped sealing seat 8. The U-shaped sealing seat 8 includes a base plate and two side wall plates disposed on both sides of the base plate, thus forming a U-shaped structure. When the embedding section is inserted into the U-shaped sealing seat 8, a gap of width S is formed between the bottom surface of the embedding section and the base plate, and gaps of width P are formed between the two sides of the embedding section and the side wall plates respectively. A gap of width K is also formed between the bottom surface of the slide section and the top surfaces of the two side wall plates respectively. Each gap is controlled within 1-3mm and is filled with sludge and / or grease. This can greatly extend the sealing path between the detection slide 7 and the U-shaped sealing seat 8, preventing air leakage in the sintering machine.

[0035] Meanwhile, since there is a sealing effect between the two sides of the embedded part and the side wall plate, even if the detection slide 7 moves slightly in the vertical direction, causing the gap of width S to increase, it will not cause the sintering machine to leak air. This embodiment solves the problem of air leakage in the sintering machine caused by the slight vertical movement of the detection slide 7 by introducing a U-shaped sealing seat 8.

[0036] It should be noted that although this embodiment uses grease and / or sludge to fill the gap for sealing, it is possible that high-temperature resistant seals may be used in some embodiments. For example, seals may be embedded in the two side walls of the U-shaped sealing seat 8, and the seals may slide in contact with the detection slide 7. This is also feasible.

[0037] Preferably, in this embodiment, a sliding sleeve 13 is fitted onto the fixing bolt 11, and the small-diameter section of the countersunk hole 7.1 slides in contact with the sliding sleeve 13. This reduces the friction between the fixing bolt 11 and the detection slide 7, preventing rigid friction between the fixing bolt 11 and the detection slide 7 from affecting the accuracy of the sealing pressure detection, and also reducing wear and extending the service life of the detection unit. Specifically, the upper end of the sliding sleeve 13 abuts against the bolt head, and its lower end passes through the small-diameter section and abuts against the U-shaped sealing seat 8. Therefore, tightening the fixing nut 12 can completely lock the fixing bolt 11, achieving the purpose of completely restricting the horizontal displacement of the detection slide 7 while retaining only the vertical degree of freedom.

[0038] Preferably, the U-shaped sealing seat 8 and the detection slide 7 are of equal length, and the length of the detection slide 7 is 0-3mm longer than the length of the movable sealing slide plate 6 on the sintering trolley 1, so as to ensure that a single sintering trolley 1 can be completely placed on the monitoring device.

[0039] Preferably, a gap is left between the detection slide 7 and the fixed slides 10 at both ends to prevent the fixed slides 10 from affecting the vertical movement of the detection slide 7; similarly, the gap between the detection slide 7 and the fixed slides 10 is sealed by sludge and grease to prevent air leakage in the sintering machine. In some embodiments, a high-temperature resistant seal may also be provided between the U-shaped sealing seat 8 and the fixed slide 10 to achieve the purpose of sealing.

[0040] Preferably, the upper surface of the detection slide 7 is flush with the upper surface of the fixed slide 10 to ensure that the sintering trolley 1 can smoothly enter the detection slide 7 and ensure the stability of the sintering trolley 1 during movement.

[0041] Preferably, in some embodiments, the clearance opening 8.1 may not be provided on the U-shaped sealing seat 8, but only the clearance cavity 7.2 is provided on the detection slide 7. This structure can also prevent the thickness of the pressure sensor 9 itself from causing a gap between the U-shaped sealing seat 8 and the detection slide 7 (i.e., Figure 4 The problem of excessively wide gaps (spanning widths S and K) is addressed in this structural configuration. The U-shaped sealing seat 8 is fixedly mounted on the air box 4, the pressure sensor 9 is positioned on the bottom surface of the groove of the U-shaped sealing seat 8 and located within the clearance cavity 7.2, and the detection slide 7 is mounted on the pressure sensor 9. The detection slide 7 can still utilize countersunk holes 7.1 and fixing bolts 11 for degree-of-freedom constraint.

[0042] Preferably, the pressure sensor in this embodiment is a high-temperature resistant diaphragm pressure sensor or a piezoelectric pressure sensor with a protection level of not less than IP67, an operating temperature range of -20℃ to 600℃, and features dust resistance, impact resistance, and friction resistance, perfectly matching the harsh working conditions of the sintering machine.

[0043] Preferably, depending on the different sizes and specifications of the movable sealing slide plate 6 of the sintering trolley 1, different numbers of pressure sensors can be set on the detection slide 7. For example, for a movable sealing slide plate 6 of 100×1000mm, two pressure sensors 9 are arranged longitudinally at intervals on a single detection slide 7; for a movable sealing slide plate 6 of 100×1500mm, three pressure sensors 9 are arranged longitudinally at intervals on a single detection slide 7.

[0044] In this embodiment, the sealing pressure of the sintering trolley is measured using a monitoring device. The sealing status of the sintering trolley can be determined by comparing the sealing pressure with a set normal pressure range. In actual operation, each sintering trolley passes the monitoring device sequentially, resulting in two possible scenarios: two adjacent sintering trolleys having parts of their seals on the monitoring device simultaneously, or a single sintering trolley being entirely on the monitoring device. If the sealing pressure of each sintering trolley is normal, the sealing pressure measured by the monitoring device should be within the set normal pressure range regardless of the scenario. However, if the sealing status of a sintering trolley is faulty, the sealing pressure measured by the monitoring device will show a trend of increasing or decreasing from the moment the sintering trolley enters the monitoring device. When the sealing pressure of the sintering trolley is fully applied to the monitoring device, the measured sealing pressure will reach its maximum or minimum value. The maximum or minimum value is selected as the pressure detection value when the sealing pressure of the sintering trolley is fully applied to the monitoring device, and its sealing status can be determined by comparing it with the set normal pressure range.

[0045] Specifically, if the pressure detection value is within the set pressure range, the sealing condition is considered normal, and the equipment can operate normally without intervention. If the pressure detection value is higher than the set pressure range, the movable sealing slide plate 6 is considered to be stuck or jammed, indicating that the movable sealing slide plate 6 is too tightly fitted to the fixed slide rail 10 and the friction is abnormally high. If the pressure detection value is lower than the set pressure range, the movable sealing slide plate 6 is considered to be worn, failed, or detached, indicating insufficient sealing pressure or sealing failure. After obtaining the judgment result, the operation and maintenance personnel can be reminded to replace and repair it in time through audible and visual alarms.

[0046] Preferably, if the measured pressure value includes the weight of the test slide 7 under normal conditions, the pressure value generated by the weight of the test slide 7 under normal conditions should be subtracted from the measured pressure value before the accurate sealing pressure value of the sintering trolley can be obtained.

[0047] Preferably, the monitoring device further includes a visual recognition device 3, which is used to acquire images of the sintering trolley number plate 2 on the trolley 1. The visual recognition device 3 is a camera or video camera, located at the entrance of the monitoring device (or possibly at the exit in some embodiments). By acquiring images of the trolley number plate 2, it identifies the number of the sintering trolley, thereby achieving the purpose of associating the detected sealing pressure with the corresponding sintering trolley 1, facilitating accurate location of the sintering trolley 1 with a sealing failure. Specifically, obtaining the trolley number through image recognition is common knowledge in the art, and this embodiment does not involve improvements to image recognition technology.

[0048] Of course, the visual recognition device 3 is not indispensable in this embodiment. In some embodiments, the visual recognition device 3 may not be provided. That is, the presence of a sintering trolley with a sealing failure is determined by the sealing pressure detection. When a sintering trolley with a sealing failure is present, an alarm is triggered and the machine is stopped so that maintenance personnel can carry out inspection and replacement.

[0049] The monitoring device in this embodiment, by setting up a pressure sensor and a floating detection slide, can directly acquire the pressure change between the movable sealing slide and the fixed slide while the sintering trolley is running, providing a quantitative basis for sealing status assessment and replacing manual shutdown inspection.

[0050] Example 2: See Figure 8 This embodiment also provides a method for monitoring the sealing status of the sintering trolley using the monitoring device in Embodiment 1, including the following steps: Set the pressure range for normal operation of sintering trolley 1; The visual recognition device 3 obtains the number of the sintering trolley 1 currently being inspected; The pressure sensor 9 is used to obtain the pressure value when the movable sealing slide plate of the sintering trolley 1 being tested is completely placed on the test slide 7. By comparing the pressure detection value with the set pressure range, the sealing status of the current sintering trolley 1 is obtained.

[0051] Specifically, the pressure range of the sintering trolley 1 during normal operation is set according to the normal operating pressure range specified by the trolley sealing device supplier, and the parameters for determining overpressure and underpressure faults are also configured.

[0052] Specifically, if the pressure detection value is within the set pressure range, it is judged that the sealing condition is normal and the equipment is operating normally without intervention; if the pressure detection value is higher than the set pressure range, it is judged that the movable sealing slide plate 6 is stuck or jammed, indicating that the movable sealing slide plate 6 is too tightly fitted to the fixed slide rail 10 and the friction is abnormally high; if the pressure detection value is lower than the set pressure range, it is judged that the movable sealing slide plate 6 is worn, failed or detached, indicating that the sealing clamping force is insufficient or the seal is ineffective.

[0053] Furthermore, based on the judgment result, a fault warning is triggered, and the faulty trolley number, fault type, and real-time pressure detection value are output simultaneously to remind maintenance personnel to replace and repair it in a timely manner. The visual recognition device 3 binds the trolley number with the measured sealing pressure, making it convenient for maintenance personnel to quickly locate the sintering trolley with sealing faults.

[0054] The sintering trolley sealing status monitoring method provided in this embodiment automatically acquires the trolley number and binds it to the pressure detection value by pre-setting the normal operating pressure range and using a visual recognition device. Pressure data is collected when the trolley's movable sealing slide plate is fully on the detection track and compared with a set threshold range to quantitatively determine whether the sealing status is normal and whether there are faults such as jamming or wear failure. This method can automatically complete pressure acquisition, status determination, and faulty trolley location during sintering trolley operation without stopping the machine for troubleshooting, effectively avoiding the subjectivity and missed detection problems of manual inspection. Furthermore, this method can flexibly configure the number of sensors according to different slide plate specifications and supports the storage and traceability of historical pressure data, providing a reliable data foundation for slide plate life prediction and maintenance plan optimization.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A monitoring device for the sealing status of a sintering trolley, characterized in that: Each of the two fixed slides (10) on the sintering machine that form a sealing pair with the movable sealing slide plate (6) of the sintering trolley (1) is provided with a set of detection units, and the detection units in the two fixed slides (10) are arranged side by side. The detection unit includes a detection slide (7) and pressure sensors (9). The bottom surface of the detection slide (7) is provided with N pressure sensors (9) at intervals along its own length direction. The detection slide (7) is supported by multiple pressure sensors (9) and set on the sintering machine air box (4), where N is a natural number greater than or equal to 2.

2. The monitoring device for the sealing status of the sintering trolley according to claim 1, characterized in that, The detection unit also includes a U-shaped sealing seat (8) fixedly installed on the wind box (4), the lower part of the detection slide (7) is movably installed in the U-shaped sealing seat (8), and the pressure sensor (9) is located below the bottom surface of the detection slide (7); The detection slide (7) is provided with multiple countersunk holes (7.1) at intervals along its own length. The U-shaped sealing seat (8) is provided with a through hole. A fixing bolt (11) is used to pass through the countersunk hole (7.1) and the through hole to connect the air box (4). A vertical gap is left between the bolt head of the fixing bolt (11) and the step of the countersunk hole (7.1). The gap between the U-shaped sealing seat (8) and the detection slide (7) is filled with grease for sealing.

3. The monitoring device for the sealing status of the sintering trolley according to claim 2, characterized in that, The bottom of the U-shaped sealing seat (8) is provided with N clearance openings (8.1) at intervals along its own length direction. The bottom surface of the detection slide (7) is provided with N clearance cavities (7.2) corresponding to its own length direction. The pressure sensor (9) is set on the wind box (4) and is located in both the clearance opening (8.1) and the clearance cavity (7.2). The detection slide (7) is set on the pressure sensor (9).

4. The monitoring device for the sealing status of the sintering trolley according to claim 2, characterized in that, The bottom surface of the detection slide (7) is provided with N clearance cavities (7.2) along its own length direction. The pressure sensor (9) is set on the bottom surface of the groove of the U-shaped sealing seat (8). The pressure sensor (9) is located in the clearance cavity (7.2) and supports the detection slide (7).

5. The monitoring device for the sealing status of the sintering trolley according to claim 2, characterized in that, The cross-section of the detection slide (7) is an inverted convex shape, and the cross-section of the U-shaped sealing seat (8) is concave. The protrusion of the detection slide (7) is disposed in the groove of the U-shaped sealing seat (8).

6. The monitoring device for the sealing status of the sintering trolley according to claim 2, characterized in that, A sliding sleeve (13) is fitted on the fixing bolt (11), and the small diameter section of the countersunk hole (7.1) slides in contact with the sliding sleeve (13).

7. The monitoring device for the sealing status of the sintering trolley according to claim 2, characterized in that, The U-shaped sealing seat (8) and the detection slide (7) are of the same length, and the length of the detection slide (7) is 0-3 mm longer than the length of the movable sealing slide plate (6) on the sintering trolley (1).

8. The monitoring device for the sealing status of the sintering trolley according to claim 7, characterized in that, There is a gap between the detection slide (7) and the fixed slides (10) at both ends, and the gap between the detection slide (7) and the fixed slide (10) is sealed with grease; The upper surface of the detection slide (7) is flush with the upper surface of the fixed slide (10).

9. The monitoring device for the sealing status of the sintering trolley according to any one of claims 1-8, characterized in that, It also includes a visual recognition device (3), which is used to acquire an image of the sintering trolley number plate (2) on the trolley (1).

10. A monitoring method using the sintering trolley sealing status monitoring device as described in claim 9, characterized in that, include: Set the pressure range of the sintering trolley (1) during normal operation; The number of the sintering trolley (1) being inspected is obtained through the visual recognition device (3); The pressure sensor (9) is used to obtain the pressure value when the movable sealing slide plate of the sintering trolley (1) being tested is completely placed on the test slide (7); By comparing the pressure detection value with the set pressure range, the sealing status of the current sintering trolley (1) is obtained.

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