Manhole cover of ship

Abstract

The invention is suitable for the technical field of ship manufacturing, and provides a ship manhole cover which comprises a communicating sleeve and a sealing cover, the communicating sleeve is fixedly installed on a ship body and communicates with a ship manhole, one end of the sealing cover is in threaded connection with the interior of the communicating sleeve and blocks a communicating sleeve opening, and the ship manhole cover further comprises a reinforcing mechanism. And a detection mechanism for measuring the deformation state of the sealing cover is arranged in the sealing cover. The camera is used for shooting the sealing cover to obtain real-time image information of the sealing cover, the real-time image information is compared with standard image features in the controller for analysis, whether the sealing cover deforms or not and the deformation degree and position are judged, and then the deformation state of the sealing cover is visually displayed through the display screen. And an operator can conveniently and timely know the condition of the sealing cover and take corresponding measures. The multiple carrier plates are driven to rotate, and in the rotating process, the cameras on the carrier plates can sequentially cover different positions of the sealing cover, so that all-directional detection of the sealing cover is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ship manufacturing, and particularly relates to a ship manhole cover. BACKGROUND

[0002] The ship manhole cover is a cover plate and its fixed accessories installed on the ship manhole, which has sealing performance, and is mainly used for ensuring the safety of the ship cabin, facilitating personnel access and equipment maintenance, and having the functions of waterproofing, fireproofing, corrosion prevention and the like.

[0003] For example, the ship manhole cover and ship disclosed in CN117657359A are specifically disclosed, the manhole cover body is detachably connected with the ship body, the sealing assembly comprises a connecting seat detachably connected with the manhole cover body, a plug detachably connected with the connecting seat, and a first sealing ring, the connecting seat is provided with a first connecting hole communicating between the cabin of the ship body and the outside, the plug is provided with a second connecting hole, the first sealing ring is arranged on the side wall of the first connecting hole and located between the plug and the connecting seat, the cable of the self-noise measuring device can pass through the first connecting hole, the first sealing ring and the second connecting hole in sequence, and the first sealing ring can be in close contact with the cable in the circumferential direction. The sea water and / or gas can be prevented from entering the cabin of the ship body through the connecting place of the cable, the plug and the connecting seat, and the sea water and / or gas can be prevented from entering the cabin of the ship body through the connecting place of the connecting seat and the manhole cover body.

[0004] The existing ship manhole cover cannot detect the pressure state of the manhole cover in time in actual work, when the manhole cover reaches the pressure limit and deforms, the existing ship manhole cover cannot timely find and inform the staff, which leads to sudden pressure limit deformation of the manhole cover, and the staff may not have enough time to react, causing harm to nearby staff, and the manhole cover cannot be normally sealed due to pressure deformation, and it is necessary to design a ship manhole cover to solve the above problems. SUMMARY

[0005] The present application provides a ship manhole cover, which aims to solve the problem that the current ship manhole cover cannot detect the pressure state of the manhole cover in time in actual work.

[0006] The present application is implemented as follows: a ship manhole cover, comprising a communication sleeve and a sealing cover, the communication sleeve is fixedly installed on the ship body and communicates with the ship manhole, one end of the sealing cover is threadedly connected in the communication sleeve and blocks the communication sleeve port, and a reinforcing mechanism is further included, the reinforcing mechanism is used for fixing the sealing cover, a detection mechanism for measuring the deformation state of the sealing cover is arranged in the sealing cover, and the detection mechanism detects the sealing cover through an image analysis detection method; The image analysis detection method comprises the following steps: An image is set as a control image, and a plurality of groups of sealing cover surface images are collected, the control image is an image of the sealing cover in a normal state; The collected surface image is denoised and the image edge details are retained, the denoised image is grayed, and the image is enhanced by histogram equalization to obtain a target image; The edge information of the sealing cover surface in the target image is detected, and the feature points in the reference image and the target image are matched, the relative position changes between the matched feature points are compared to determine the deformation area and deformation degree of the sealing cover; According to the deformation area and deformation degree of the sealing cover, it is judged whether the state of the sealing cover is normal.

[0007] As a preferred scheme, the reinforcing mechanism includes a groove body fixedly installed outside the sealing cover, a limiting rod provided on the groove body, a hinge member hingedly connected to the ship body, a baffle installed on the hinge member and hingedly connected to the ship body, a support fixedly installed outside the communication sleeve, a handle hingedly connected to the support, the baffle being capable of being put into the groove body, the limiting rod being slidingly installed on the groove body and penetrating through the groove body and the baffle, a notch being formed at one end of the baffle, the handle being capable of being rotated into the notch, and a handle being provided at the end of the handle.

[0008] As a preferred scheme, the detection mechanism includes a plurality of carrier plates provided on one side of the sealing cover, a camera being fixedly installed on each carrier plate and used for shooting the sealing cover, a controller being fixedly installed on the sealing cover and connected to the cameras through signal transmission lines, and a display screen being installed on the controller and used for displaying the detection structure in real time.

[0009] As a preferred scheme, a servo motor is fixedly installed on the sealing cover, a connecting rod is fixedly installed at the output shaft end of the servo motor, the connecting rod is fixedly connected to the plurality of carrier plates, and the plurality of carrier plates are distributed in a circumferential array.

[0010] As a preferred scheme, a sealed air cushion is attached to each side of the carrier plate, an air pump is fixedly installed on the carrier plate, the exhaust pipe of the air pump is in communication with the sealed air cushions on both sides, the sealed air cushions are in a state of sealing the gap between the carrier plate and the sealing cover when inflated, a plurality of air pressure detectors are fixedly installed on the carrier plate, and the air pressure detectors are used for measuring the air pressure between the carrier plate and the sealing cover.

[0011] As a preferred scheme, a plurality of reinforcing ribs are provided on the sealing cover.

[0012] As a preferred scheme, the connecting rod and the interior are hollow, one end of the connecting rod penetrates through the carrier plate and is in communication with the cavity between the carrier plate and the sealing cover, an isolation cover is fixedly installed on the carrier plate, the isolation cover is installed outside the servo motor, the output shaft of the servo motor penetrates through the isolation cover, and the connecting rod is rotatably installed on the isolation cover.

[0013] As a preferred scheme, the isolation cover is provided with a heat dissipation groove.

[0014] As a preferred scheme, the isolation cover is provided with a communication hole, one end of the communication hole is communicated with the inner cavity of the connecting rod, an air pump is fixedly installed on the carrier plate, and an exhaust pipe of the air pump is communicated with the other end of the communication hole.

[0015] As a preferred scheme, a valve is installed on the exhaust pipe of the air pump.

[0016] Compared with the related art, the manhole cover of the ship has the following beneficial effects: 1. The camera shoots the sealing cover to obtain real-time image information of the sealing cover, compares and analyzes the standard image features in the controller to determine whether the sealing cover deforms and the degree and position of the deformation, and intuitively displays the deformation state of the sealing cover through the display screen, so that the operator can timely understand the condition of the sealing cover and take corresponding measures. The multiple carrier plates are driven to rotate, and the camera on each carrier plate can cover different positions of the sealing cover in turn during the rotation, so that the sealing cover is detected in all directions.

[0017] 2. The sealing cover is rotated to tightly cooperate with the communication sleeve, thereby plugging the communication sleeve port to realize the preliminary sealing of the manhole and prevent seawater, air and the like from entering the cabin. The baffle is fixed in the groove body, and the baffle and the sealing cover form a relatively fixed whole at this time, thereby enhancing the stability of the sealing cover. After the handle enters the notch, the movement of the baffle is limited, the connection between the baffle and the sealing cover is further reinforced, and it is ensured that the sealing cover will not loosen or fall off due to factors such as vibration and sea wave impact during the ship sailing.

[0018] 3. The air pressure detector can capture the air pressure change between the carrier plate and the sealing cover, so that the operator can quickly know that the sealing cover deforms and timely take corresponding measures. The sealing air cushion adhered to the two sides of the carrier plate can tightly fit the carrier plate and the sealing cover in the inflated state, effectively sealing the gap between them. This can prevent dust, impurities, moisture and the like in the outside from entering the internal space formed by the carrier plate and the sealing cover, avoid interference of these factors on the internal equipment, elements or detection process, and ensure the cleanliness and stability of the internal environment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure diagram of the present application Figure 1 ; Figure 2 is a structure diagram of the present application Figure 2 ; Figure 3 is another side structure diagram of the sealing cover in the present application Figure 4This is a partial enlarged schematic diagram of the structure at the carrier plate in this invention; Figure 5 This is an enlarged cross-sectional view of a portion of the structure at the connecting rod in this invention; Figure 6 For the present invention Figure 5 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Connecting sleeve; 2. Sealing cap; 3. Groove; 4. Limiting rod; 5. Hinge; 6. Baffle; 7. Bracket; 8. Turning handle; 9. Notch; 10. Carrier plate; 11. Camera; 12. Controller; 13. Display screen; 14. Servo motor; 15. Connecting rod; 16. Sealing air cushion; 17. Air pump; 18. Air pressure detector; 19. Isolation cover; 20. Connecting hole; 21. Air pump. Detailed Implementation

[0021] 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 application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] A preferred embodiment of the ship manhole cover provided by the present invention is as follows: Figures 1 to 6 As shown: A ship manhole cover includes a connecting sleeve 1 and a sealing cover 2. The connecting sleeve 1 is fixedly installed on the hull and communicates with the ship's manhole. One end of the sealing cover 2 is threaded into the connecting sleeve 1 and seals the opening of the connecting sleeve 1. The cover also includes a reinforcing mechanism for fixing the sealing cover 2. The sealing cover 2 is provided with a detection mechanism for measuring the deformation state of the sealing cover 2. The detection mechanism detects the sealing cover using an image analysis detection method.

[0024] The image analysis detection method includes the following steps: Set the control image, collect multiple sets of sealing cover surface images, and the control image is a sealing cover image in a normal state; Perform denoising processing on the collected surface image, retain image edge details, perform gray scale processing on the denoised image, and perform image enhancement processing through a histogram equalization method to obtain a target image; Detect sealing cover surface edge information in the target image, extract feature points in the control image and the target image for matching, compare relative position changes between the matched feature points to determine a deformation region and a deformation degree of the sealing cover; Judge whether the state of the sealing cover is normal according to the deformation region and the deformation degree of the sealing cover.

[0025] Specifically: Image collection step: In the normal state and the working condition in which deformation may occur, multiple sets of sealing cover surface images are collected by using a high-resolution industrial camera installed inside the sealing cover 2; Image preprocessing step: The median filter algorithm is used to perform denoising processing on the collected original image, remove pepper and salt noise interference information in the image, and retain image edge details. The denoised image is subjected to gray scale processing to convert the color image into a gray scale image to reduce the data volume. The histogram equalization method is used for image enhancement processing to enhance the contrast of the image and make the sealing cover surface deformation features more obvious; Deformation feature extraction step: The Canny edge detection algorithm is used to detect the sealing cover surface edge information, the threshold is set to extract the sealing cover contour edge, the SIFT scale invariant feature transform algorithm is used to extract feature points in the images in the normal state and the deformation state and perform matching, and the relative position changes between the matched feature points are compared to determine the deformation region and the deformation degree of the sealing cover; Deformation state judgment step: A deformation state evaluation model is established according to the extracted deformation features, the deformation degree index is defined as the ratio of the deformation region area to the total area of the sealing cover and the maximum value of the relative displacement of the feature points, the calculated deformation degree index is compared with the preset threshold value, if it exceeds the threshold value, it is determined that the sealing cover has abnormal deformation and an alarm signal is issued, if it is within the normal range, it is determined that the deformation state of the sealing cover is normal.

[0026] The deformation state evaluation model includes the following key elements and operation logic, which is a judgment model based on the comparison of specific indexes and threshold values. The sealing cover deformation features extracted in the previous steps include deformation region area, total area of the sealing cover, feature point relative displacement, and other information.

[0027] Core processing logic: First, define the deformation degree index, including two groups of indexes: Index 1: the ratio of the deformed area to the total area of the sealing cover. This index measures the range of the sealing cover deformation from the whole, the larger the ratio, the more extensive the deformation.

[0028] Index 2: the maximum value of the relative displacement of the feature points. This index focuses on the local deformation of the sealing cover surface. By comparing the relative position changes between the matching feature points in the normal state and the deformed state, the largest value is found. The larger the value, the more serious the local deformation.

[0029] According to the collected image data and the feature extraction results, the specific values of the above two deformation degree indexes are accurately calculated. For example, the pixel area of the deformed area is determined through image processing technology, and then combined with the known corresponding relationship between the actual size of the sealing cover and the pixels, the actual deformed area and the total area of the sealing cover are converted, and then the ratio of them is calculated; for the relative displacement of the feature points, the coordinate changes of the corresponding feature points in the normal and deformed images are accurately measured by algorithm, and the relative displacement is obtained and the maximum value is found.

[0030] The two calculated deformation degree indexes are compared with the preset threshold values respectively. The preset threshold values are determined comprehensively according to the normal use standards, safety requirements and actual engineering experience of the sealing cover.

[0031] If at least one of the two indexes exceeds the corresponding preset threshold value, it is determined that the sealing cover has abnormal deformation, and an alarm signal is triggered to take timely measures for processing to prevent accidents.

[0032] If both indexes are within the normal range, it is determined that the sealing cover is in normal deformation state and no special treatment is needed, and the routine monitoring continues.

[0033] The judgment result of the deformation state, i.e. whether the sealing cover has abnormal deformation or not, and the alarm signal when the abnormal deformation occurs The median filter algorithm can effectively remove the salt and pepper noise and other interference information in the image, while well preserving the image edge details, avoiding edge blur or false recognition caused by noise interference. Gray scale processing reduces the data amount of color images and reduces the complexity of subsequent processing, while not affecting the extraction of deformation features. The histogram equalization method enhances the contrast of the image, making the deformation features of the sealing cover surface more obvious, laying a foundation for accurate extraction of deformation features.

[0034] The Canny edge detection algorithm can accurately detect the edge information of the sealing cover surface. By reasonably setting the threshold value, the profile edge of the sealing cover can be effectively extracted, and the occurrence of edge breakage or false edge can be avoided. The scale invariant feature transform algorithm has the advantages of scale invariance and rotation invariance, and can accurately extract feature points and match them in normal and deformed state images. By comparing the relative position changes between the matched feature points, the deformation area and degree of the sealing cover can be accurately determined, greatly improving the accuracy of the detection.

[0035] A deformation state evaluation model is established according to the extracted deformation features, and the deformation degree index is defined as the ratio of the deformation area to the total area of the sealing cover and the maximum relative displacement of the feature points. This quantitative index can objectively and accurately reflect the deformation state of the sealing cover. Comparing the calculated deformation degree index with the preset threshold value can reliably determine whether the sealing cover has abnormally deformed, reducing the subjectivity and errors of human judgment.

[0036] The reinforcing mechanism includes a groove body 3 fixedly installed outside the sealing cover 2, a limiting rod 4 provided on the groove body 3, a hinged member 5 hinged to the ship body, a baffle 6 installed on the hinged member 5, the baffle 6 being hinged to the ship body through the hinged member 5, a support 7 fixedly installed outside the communication sleeve 1, a handle 8 hinged to the support 7, the baffle 6 being capable of being put into the groove body 3, the limiting rod 4 being slidingly installed on the groove body 3 and penetrating through the groove body 3 and the baffle 6, a notch 9 being formed at one end of the baffle 6, the handle 8 being capable of being rotated into the notch 9, and a grip being provided at the end of the handle 8.

[0037] The communication sleeve 1 is fixedly installed on the ship body and communicates with the manhole of the ship, thereby providing a basis for the installation of the sealing cover 2. One end of the sealing cover 2 is threadedly connected in the communication sleeve 1, and the sealing cover 2 is tightly matched with the communication sleeve 1 by rotating the sealing cover 2, so as to block the opening of the communication sleeve 1 and achieve the preliminary sealing of the manhole, thereby preventing seawater, air and the like from entering the ship cabin.

[0038] The hinged member 5 is hinged to the ship body, and the baffle 6 is installed on the hinged member 5, so that the baffle 6 can be rotated on the ship body about the hinge point. The baffle 6 is rotated to a suitable position and put into the groove body 3, the limiting rod 4 is pushed to pass through the corresponding holes in the groove body 3 and the baffle 6, so as to fix the baffle 6 in the groove body 3. At this time, the baffle 6 and the sealing cover 2 form a relatively fixed whole, thereby enhancing the stability of the sealing cover 2.

[0039] The handle 8 is rotated into the notch 9 by rotating the handle 8. The grip is provided at the end of the handle 8, thereby facilitating the rotation of the handle 8 by the operator. After the handle 8 enters the notch 9, the movement of the baffle 6 is limited, thereby further reinforcing the connection between the baffle 6 and the sealing cover 2 and ensuring that the sealing cover 2 will not be loosened or fall off due to factors such as vibration and sea wave impact during the navigation of the ship.

[0040] When it is necessary to open the manhole cover, the operator holds the handle at the end of the handle 8, reversely rotates the handle 8, and makes the handle 8 rotate out of the notch 9 of the baffle 6, thereby releasing the restriction of the handle 8 on the baffle 6. Then, the limiting rod 4 is pulled out of the slot body 3 and the baffle 6, thereby releasing the locking of the baffle 6. Finally, the baffle 6 is rotated to move out of the slot body 3, and the sealing cover 2 is reversely rotated to rotate out of the communication sleeve 1, so that the manhole cover is opened.

[0041] In further preferable embodiments of the present application: The detection mechanism includes a plurality of carrier plates 10 arranged on one side of the sealing cover 2, and a camera 11 is fixedly installed on each carrier plate 10. The camera 11 is used to shoot the sealing cover 2, and a controller 12 is fixedly installed on the sealing cover 2. The camera 11 is connected to the controller 12 through a signal transmission line. The controller 12 is provided with a display screen 13, and the display screen 13 is used to display the detection result in real time. The deformation state of the sealing cover 2 is detected by the detection mechanism, and the controller 12 is based on the visual detection principle.

[0042] A servo motor 14 is fixedly installed on the sealing cover 2. A connecting rod 15 is fixedly installed at the output shaft end of the servo motor 14. The end of the connecting rod 15 is fixedly connected to a plurality of carrier plates 10, and the plurality of carrier plates 10 are arranged in a circumferential array. The plurality of carrier plates 10 are synchronously rotated by the servo motor 14, so as to drive the camera 11 to rotate to different positions of the sealing cover 2, thereby performing detection work on different positions of the sealing cover 2.

[0043] A plurality of carrier plates 10 are arranged on one side of the sealing cover 2, and the carrier plates 10 are arranged in a circumferential array. The circumferential array arrangement mode enables the carrier plates 10 to be uniformly arranged around the sealing cover 2, thereby providing a reasonable space structure for subsequent detection of different positions of the sealing cover 2. A camera 11 is fixedly installed on each carrier plate 10. The camera 11 is a key component for obtaining image information of the sealing cover 2, and the position and angle of the camera 11 are crucial to the accuracy of the detection. The installation position and angle of the camera 11 on the carrier plate 10 are reasonably adjusted, so as to ensure that the camera 11 can clearly shoot a specific area of the sealing cover 2.

[0044] A controller 12 is fixedly installed on the sealing cover 2. The controller 12 is a core control unit of the entire detection system, and is responsible for receiving, processing and analyzing image information transmitted by the camera 11. The camera 11 is connected to the controller 12 through a signal transmission line. This wired connection mode guarantees the stability and real-time performance of image information transmission, and avoids signal interference and loss. The controller 12 is also provided with a display screen 13. The display screen 13 displays the detection result processed by the controller 12 in real time, so as to enable an operator to intuitively understand the deformation state of the sealing cover 2.

[0045] The camera 11 continuously photographs the sealing cover 2 to obtain real-time image information of the sealing cover 2. These image information contains the surface shape, contour and other detailed features of the sealing cover 2, and is the basis data for subsequent deformation analysis. Since the camera 11 is fixedly installed on the carrier plate 10, its shooting angle and range are relatively fixed, but during the rotation of the carrier plate 10 driven by the servo motor 14, the camera 11 can photograph different areas of the sealing cover 2.

[0046] After the controller 12 receives the image information, it uses advanced image processing algorithms to pre-process the image, such as noise reduction, contrast enhancement and other operations, to improve the quality and clarity of the image. Then, the controller 12 uses feature extraction algorithms to extract the key features of the sealing cover 2 from the pre-processed image, such as edges, corners, etc. By comparing and analyzing these key features with the standard image features pre-stored in the controller 12, the controller 12 can determine whether the sealing cover 2 has deformed and the degree and location of the deformation. For example, if the edge of the sealing cover 2 is detected to be bent or deformed, the controller 12 can determine the severity of the deformation by calculating the deformation amount. The controller 12 displays the analysis and processing results in real time through the display screen 13. The display screen 13 can visually display the deformation state of the sealing cover 2 in the form of graphics, numbers or text, such as displaying the location of the deformation, the size of the deformation amount, etc., to facilitate the operator to timely understand the situation of the sealing cover 2 and take appropriate measures.

[0047] When the servo motor 14 starts, its output shaft drives the connecting rod 15 to rotate, and the connecting rod 15 in turn drives the multiple carrier plates 10 to rotate synchronously. Since the carrier plates 10 are distributed in a circular array, during the rotation, the camera 11 on each carrier plate 10 can cover different positions of the sealing cover 2 in turn, thereby realizing omnidirectional detection of the sealing cover 2. For example, after the servo motor 14 drives the carrier plate 10 to rotate by a certain angle, the camera 11 that originally cannot photograph a certain area of the sealing cover 2 can move to the appropriate position to photograph and detect the area.

[0048] Among them, the carrier plate 10 is adhered with a sealing air cushion 16 on both sides, and a gas pump 17 is fixedly installed on the carrier plate 10. The exhaust pipe of the gas pump 17 communicates with the sealing air cushions 16 on both sides. The sealing air cushions 16 seal the gap between the carrier plate 10 and the sealing cover 2 in the inflated state. A plurality of air pressure detectors 18 are fixedly installed on the carrier plate 10, and the air pressure detectors 18 are used to measure the air pressure between the carrier plate 10 and the sealing cover 2. When the air pressure between the carrier plate 10 and the sealing cover 2 changes, it can be quickly known that the sealing cover 2 has deformed.

[0049] When the sealing system is working normally and the sealing cover 2 does not deform, the sealing air cushions 16 on both sides of the carrier plate 10 are in an inflated state, closely adhering to the carrier plate 10 and the sealing cover 2, thereby sealing the gap between the carrier plate 10 and the sealing cover 2. At this time, the air pressure in the relatively closed space formed by the carrier plate 10 and the sealing cover 2 is maintained within a relatively stable range, and the air pressure values measured by the plurality of air pressure detectors 18 fluctuate slightly and are within the preset normal value range.

[0050] When the sealing cover 2 deforms, the relative position and gap size between the carrier plate 10 and the sealing cover 2 are changed, thereby affecting the air pressure in the closed space. This can be divided into the following two cases: Outward bulging deformation of the sealing cover 2: If the sealing cover 2 deforms outwardly, the gap between the carrier plate 10 and the sealing cover 2 will increase. The volume of the space originally sealed by the sealing air cushion 16 becomes larger, and according to the ideal gas state equation (in the case of constant temperature, the gas pressure is inversely proportional to the volume), the air pressure in the space will decrease. After the air pressure detector 18 detects the decrease in air pressure, it will transmit the air pressure data to the control system (such as the controller 12 mentioned above).

[0051] Inward bulging deformation of the sealing cover 2: When the sealing cover 2 deforms inwardly, the gap between the carrier plate 10 and the sealing cover 2 decreases, and the volume of the sealed space decreases. In the case of constant gas volume, the air pressure in the space will increase. The air pressure detector 18 detects the increase in air pressure and also transmits the data to the control system.

[0052] After the control system receives the air pressure data transmitted by the air pressure detector 18, it compares and analyzes it with the preset normal air pressure range. If the air pressure exceeds the normal range, the control system can quickly determine that the sealing cover 2 has deformed, and can estimate the degree of deformation according to the magnitude of the change in air pressure. For example, the greater the decrease or increase in air pressure, the more likely it is that the sealing cover 2 has deformed more severely. At the same time, in combination with the position information of the plurality of air pressure detectors 18, the approximate position of the deformation of the sealing cover 2 can also be preliminarily determined.

[0053] The sealing cover 2 is provided with a plurality of reinforcing ribs, which can improve the strength of the sealing cover 2. The connecting rod 15 and the inner part are hollow, one end of the connecting rod 15 penetrates the carrier plate 10 and communicates with the cavity between the carrier plate 10 and the sealing cover 2, the carrier plate 10 is fixedly provided with an isolation cover 19, the isolation cover 19 is installed outside the servo motor 14, the output shaft of the servo motor 14 penetrates the isolation cover 19, and the connecting rod 15 is rotatably installed on the isolation cover 19. The isolation cover 19 is provided with a communication hole 20, one end of the communication hole 20 communicates with the inner cavity of the connecting rod 15, the carrier plate 10 is fixedly provided with an air pump 21, and the exhaust pipe of the air pump 21 communicates with the other end of the communication hole 20. The exhaust pipe of the air pump 21 is provided with a valve. The cavity between the carrier plate 10 and the sealing cover 2 is pre-filled with air to detect the air pressure state in the cavity, so as to measure the sealing property between the carrier plate 10 and the sealing cover 2, and provide guarantee for the accuracy of the subsequent detection result. The isolation cover 19 is provided with a heat dissipation groove for dissipating heat of the servo motor 14 in the isolation cover 19.

[0054] It should be noted that the circuit, electronic components and modules involved in the present application are all prior art, and those skilled in the art can realize them without further description. The content protected by the present application does not involve improvement of software and methods.

[0055] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, another division mode can be adopted, for example, a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interface, electrical or other form.

[0056] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can still make some modifications or adjustments to the features of the embodiments of the present application according to the circumstances without conflict and creative labor, so as to obtain different technical solutions which do not deviate from the concept of the present application in essence. These technical solutions also belong to the scope of protection of the present application.

Claims

1. A ship manhole cover, comprising a connecting sleeve (1) and a sealing cover (2), wherein the connecting sleeve (1) is fixedly installed on the hull and communicates with the ship's manhole, and one end of the sealing cover (2) is threaded into the connecting sleeve (1) and seals the opening of the connecting sleeve (1), characterized in that, It also includes a reinforcement mechanism for fixing the sealing cover (2). The sealing cover (2) is provided with a detection mechanism for measuring the deformation state of the sealing cover (2). The detection mechanism detects the sealing cover by image analysis detection method. The image analysis and detection method includes the following steps: Set up a reference image and collect multiple sets of images of the sealing cap surface. The reference image is an image of the sealing cap under normal conditions. The acquired surface image is denoised while preserving image edge details. The denoised image is then converted to grayscale and enhanced using histogram equalization to obtain the target image. The edge information of the sealing cap surface in the target image is detected, and feature points are extracted and matched between the control image and the target image. The relative position changes between the matched feature points are compared to determine the deformation area and degree of deformation of the sealing cap. The condition of the sealing cap can be determined by the deformation area and degree of deformation.

2. The ship manhole cover as described in claim 1, characterized in that, The reinforcement mechanism includes a trough (3), which is fixedly installed outside the sealing cover (2). A limiting rod (4) is provided on the trough (3). It also includes a hinge (5) hinged to the hull. A baffle (6) is installed on the hinge (5). The baffle (6) is hinged to the hull through the hinge (5). A bracket (7) is fixedly installed on the outside of the connecting sleeve (1). A handle (8) is hinged on the bracket (7). The baffle (6) can be placed inside the trough (3). The limiting rod (4) is slidably installed on the trough (3) and passes through the trough (3) and the baffle (6). A notch (9) is opened at one end of the baffle (6). The handle (8) can be rotated into the notch (9). A grip is provided at the end of the handle (8).

3. The ship manhole cover as described in claim 1, characterized in that, The detection mechanism includes multiple carrier plates (10) set on one side of the sealing cover (2). Each carrier plate (10) is fixedly equipped with a camera (11). The camera (11) is used to photograph the sealing cover (2). A controller (12) is fixedly installed on the sealing cover (2). The camera (11) is connected to the controller (12) through a signal transmission line. The controller (12) is equipped with a display screen (13) and the display screen (13) is used to display the detection structure in real time.

4. The ship manhole cover as described in claim 3, characterized in that, A servo motor (14) is fixedly installed on the sealing cover (2). A connecting rod (15) is fixedly installed on the output shaft end of the servo motor (14). The end of the connecting rod (15) is fixedly connected to multiple carrier plates (10). The multiple carrier plates (10) are arranged in a circumferential array.

5. The ship manhole cover as described in claim 4, characterized in that, Both sides of the carrier plate (10) are bonded with sealing air pads (16). An air pump (17) is fixedly installed on the carrier plate (10). The exhaust pipe of the air pump (17) is connected to the sealing air pads (16) on both sides. When the sealing air pads (16) are inflated, they seal the gap between the carrier plate (10) and the sealing cover (2). Multiple air pressure detectors (18) are fixedly installed on the carrier plate (10). The air pressure detectors (18) are used to measure the air pressure between the carrier plate (10) and the sealing cover (2).

6. The ship manhole cover as described in claim 1, characterized in that, The sealing cap (2) is provided with multiple reinforcing ribs.

7. The ship manhole cover as described in claim 5, characterized in that, The connecting rod (15) and its interior are both hollow. One end of the connecting rod (15) passes through the carrier plate (10) and communicates with the cavity between the carrier plate (10) and the sealing cover (2). An isolation cover (19) is fixedly installed on the carrier plate (10). The isolation cover (19) is installed outside the servo motor (14). The output shaft of the servo motor (14) passes through the isolation cover (19). The connecting rod (15) is rotatably installed on the isolation cover (19).

8. The ship manhole cover as described in claim 7, characterized in that, The isolation cover (19) has heat dissipation slots.

9. The ship manhole cover as described in claim 7, characterized in that, The isolation cover (19) has a connecting hole (20), one end of which is connected to the inner cavity of the connecting rod (15). An air pump (21) is fixedly installed on the carrier plate (10), and the exhaust pipe of the air pump (21) is connected to the other end of the connecting hole (20).

10. The ship manhole cover as described in claim 9, characterized in that, A valve is installed on the exhaust pipe of the air pump (21).

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