Bolt cleaning device based on rotary steel wire brush

Abstract

The invention relates to the technical field of bolt cleaning, and provides a bolt cleaning device based on a rotary steel wire brush, the bolt cleaning device comprises a bolt clamping mechanism and a rotary cleaning mechanism, the bolt clamping mechanism is used for fixing a to-be-cleaned bolt and preventing the bolt from falling off or falling off during cleaning; and the rotary cleaning mechanism comprises a driving motor and a rotary steel wire brush, the rotary steel wire brush is driven by the driving motor to rotate, and the surface of the bolt is cleaned by the steel wire brush through rotation. According to the bolt cleaning device, the to-be-cleaned bolt fixed by the bolt clamping mechanism is cleaned by adopting the rotary steel wire brush with certain flexibility, so that on one hand, breakage and failure of the cleaning device can be avoided or reduced, and on the other hand, scrapping of the bolt caused by damage in the cleaning process can be reduced or prevented.

Description

Technical Field

[0001] This invention relates to the field of bolt cleaning technology, and in particular to a bolt cleaning device based on a rotating wire brush. Background Technology

[0002] Bolts are commonly used fasteners in mechanical assembly and are widely used in power, machinery manufacturing, automotive, construction, railway and other fields. After long-term use or storage, bolts often develop rust, oil stains and coating aging on their surface, making them difficult to disassemble or reducing their strength, thus affecting the reliability of the connection and the quality of the assembly.

[0003] Currently, existing technologies include manual brushing, chemical cleaning, sandblasting, ultrasonic cleaning, or laser cleaning for cleaning bolts. Manual brushing is inefficient and yields poor cleaning results; chemical cleaning requires large amounts of reagents and generates pollution; sandblasting, ultrasonic cleaning, and laser cleaning equipment are expensive, and ultrasonic cleaning is only suitable for cleaning smaller bolts. Utility model patent document CN218360817U discloses a bolt cleaning device, including a cleaning blade, a groove, a round tube, a fixing nut, a spring, a tightening bolt, a magnet, and a sliding top column limiter. In use, the cleaning blade is placed in the groove, and the lower end of the blade engages with the thread of the bolt to be cleaned. Rotating the bolt cleans the thread, thus replacing manual cleaning and improving efficiency. However, on the one hand, the cleaning blade used in this bolt cleaning device is prone to breakage; on the other hand, the cleaning blade can easily cut the thread of the bolt, causing damage and rendering the bolt unusable.

[0004] Therefore, it is necessary to provide a bolt cleaning device that is reliable and does not damage the bolts being cleaned. After a long period of research and experimentation, the inventors have designed and provided a bolt cleaning device based on a rotating wire brush. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a bolt cleaning device based on a rotating wire brush, comprising a bolt clamping mechanism and a rotating cleaning mechanism, wherein...

[0006] The bolt clamping mechanism is used to fix the bolts to be cleaned, preventing them from coming off or falling off during cleaning.

[0007] The rotary cleaning mechanism includes a drive motor and a rotating wire brush. The rotating wire brush is driven by the drive motor to rotate, and the wire brush is used to clean the surface of the bolts by rotating.

[0008] Furthermore, the rotating wire brush includes a rotating wheel and a wire brush fixed to the outer circumferential edge of the rotating wheel; the rotating wheel is fixedly connected to the output shaft of the drive motor.

[0009] Furthermore, the bolt clamping mechanism employs at least two L-shaped clamping plates. The horizontal plates of the different L-shaped clamping plates overlap and are fixedly connected in an adjustable manner. The vertical plates of the two overlapping L-shaped clamping plates are horizontally arranged in the same direction. The distance between the vertical plates of the two overlapping L-shaped clamping plates can be changed by adjusting the position of the two overlapping horizontal plates to achieve clamping and fixing of the bolt to be cleaned. The position where the vertical plates of the two overlapping L-shaped clamping plates clamp the bolt to be cleaned is provided with an avoidance notch. The avoidance notch of the fixed position of the wire brush corresponds to that of the bolt to be cleaned.

[0010] Furthermore, the bolt clamping mechanism is equipped with an adjustment mechanism, which is used to automatically adjust the distance between the vertical plates of the two L-shaped clamping plates as needed to achieve clamping and fixing of the bolts to be cleaned.

[0011] Furthermore, the bolt clamping mechanism employs a rotatable and coaxially opposed first and second machine heads, with the wire brush located outside the machine head axis between the first and second machine heads. Both the first and second machine heads are equipped with clamping components; wherein,

[0012] The clamping assembly of the first head is used to clamp the bolt head of the bolt to be cleaned, and the longitudinal axis of the bolt to be cleaned is coincident with the axis of the head.

[0013] The clamping assembly of the second head is used to clamp a blind hole nut with internal thread that is compatible with the bolt to be cleaned. The bottom of the blind hole of the blind hole nut is provided with a pointed protrusion that is off-center from the axis of the head.

[0014] Furthermore, it also includes a robotic arm, which is used to remove the cleaned bolts from the clamping position of the bolt clamping mechanism, and to pick up the bolts to be cleaned and place them into the clamping position of the bolt clamping mechanism.

[0015] The robotic arm grips and contacts the bolts to be cleaned using a flexible material.

[0016] Furthermore, it also includes a cleanup control subsystem, which includes:

[0017] The bolt surface condition detection module is used to track and detect the bolt surface using machine vision to obtain bolt surface condition information.

[0018] The cleaning decision module is used to determine whether cleaning is required and the cleaning mode to be used based on the bolt surface condition information, and to send cleaning instructions to the cleaning execution module.

[0019] The cleaning module is used to control the bolt clamping mechanism and the rotating cleaning mechanism to perform bolt cleaning according to the cleaning instructions.

[0020] Furthermore, the bolt surface condition detection module includes:

[0021] The multispectral imaging submodule is used to perform image analysis using multispectral imaging technology and a trained surface state classification model to identify whether there are stains and / or corrosion on the bolt surface; if stains are present, the type of stains is further identified.

[0022] The surface condition grading submodule is used to output the surface condition level of the bolt surface based on the stains and / or corrosion on the bolt surface using an AI grading algorithm and a ResNet convolutional network.

[0023] Furthermore, the rotating wire brush is equipped with a cleaning fluid nozzle and a collection tank. The collection tank is located at the bottom of the rotating wire brush, and the cleaning fluid nozzle is positioned to be aligned with the wire brush. The cleaning fluid nozzle is connected to a liquid pump, and the suction port of the liquid pump is connected to different cleaning fluid storage tanks through a liquid supply branch pipe with a solenoid valve. The collection tank is used to collect the cleaning fluid that did not stick to the wire brush or was thrown out by the wire brush.

[0024] The bolt cleaning device also includes a nitrogen supply mechanism, which includes a nitrogen storage tank, a solenoid valve and a nitrogen nozzle connected in sequence via a gas pipeline. The nitrogen nozzle is aimed at the bolts fixed by the bolt clamping mechanism.

[0025] Based on the stains indicated in the bolt surface condition information, the cleaning decision module determines the type of cleaning fluid to be used and issues corresponding control commands to the gas pipeline solenoid valve, the liquid supply branch pipe solenoid valve, and the liquid pump.

[0026] Furthermore, the cleanup control subsystem also includes:

[0027] The audio acquisition module is used to acquire the brush bristle friction acoustic signal of the wire brush in real time by configuring a MEMS acoustic sensor array, and to perform audio signal preprocessing to eliminate interference noise.

[0028] The steel wire wear assessment module is used to extract the energy entropy of the acoustic feature frequency band in the brush filament friction acoustic signal, and to perform steel wire wear assessment using a pre-established and trained brush filament wear diagnostic model to obtain the wear degree.

[0029] The wear compensation module is used to adjust the cleaning control parameters for compensation and issue a warning message when the wear level exceeds the preset wear threshold.

[0030] This invention uses a bolt clamping mechanism to hold the bolt to be cleaned, while a drive motor drives a rotating wire brush to clean the surface of the bolt. Centrifugal force spreads the wires of the wire brush, covering the threads, grooves, and other complex surfaces of the bolt, ensuring thorough cleaning. The friction between the wire brush and the bolt surface removes dirt and / or rust, thus cleaning the bolt surface, restoring its metallic luster, and preventing damage to the bolt from contamination. Using a flexible rotating wire brush to clean the bolt held in place avoids or reduces the risk of tool breakage and prevents damage to the bolt during cleaning.

[0031] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in this patent application.

[0032] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0033] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0034] Figure 1 This is a schematic diagram of the bolt clamping mechanism and the rotating cleaning mechanism used in a bolt cleaning device based on a rotating wire brush according to an embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of an embodiment of a bolt clamping mechanism and its configured adjustment mechanism used in the bolt cleaning device based on a rotating wire brush of the present invention;

[0036] Figure 3 This is a schematic diagram of another embodiment of a bolt clamping mechanism and its configured adjustment mechanism used in the bolt cleaning device based on a rotating wire brush of the present invention;

[0037] Figure 4 This is a schematic diagram of another embodiment of the bolt clamping mechanism used in the bolt cleaning device based on a rotating wire brush of the present invention;

[0038] Figure 5 This is a schematic diagram of an embodiment of the robotic arm used in the bolt cleaning device based on a rotating wire brush of the present invention;

[0039] Figure 6This is a schematic diagram of an embodiment of the cleaning control subsystem used in the bolt cleaning device based on a rotating wire brush of the present invention. Detailed Implementation

[0040] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0041] Benru Figure 1 As shown, an embodiment of the invention provides a bolt cleaning device based on a rotating wire brush, including a bolt clamping mechanism 1 and a rotating cleaning mechanism, wherein...

[0042] The bolt clamping mechanism 1 is used to fix the bolts to be cleaned, preventing them from coming off or falling off during cleaning.

[0043] The rotary cleaning mechanism includes a drive motor (not shown in the figure) and a rotating wire brush 2. The rotating wire brush 2 is driven by the drive motor to rotate, and the wire brush 22 is used to clean the surface of the bolts by rotating.

[0044] The working principle of the above technical solution is as follows: The bolt clamping mechanism and the rotating cleaning mechanism are installed on the frame. This solution uses the bolt clamping mechanism to fix the bolt to be cleaned, while the drive motor drives a rotating wire brush to clean the surface of the bolt. The rotating wire brush uses centrifugal force to unfold the wires of the wire brush. The unfolded wires cover the complex surfaces of the bolt, such as threads and grooves, ensuring thorough cleaning. The high-speed rotating wire brush (the speed is usually 1000-3000 RPM) contacts the bolt surface through the hard tip of the wire, directly scraping and peeling off the attached substances. The impact force of the wire brush can destroy the bonding layer between iron oxide (Fe3O4) and the base metal. With the friction between the wire brush and the bolt surface, the stains and / or rust on the bolt surface are removed, thereby cleaning the bolt surface, restoring the metallic luster of the surface, and preventing the use of the bolt from being affected by stains and / or rust.

[0045] The beneficial effects of the above technical solution are as follows: This solution uses a rotating steel wire brush with a certain degree of flexibility to clean the bolts fixed by the bolt clamping mechanism. On the one hand, it can avoid or reduce the failure of the cleaning tool; on the other hand, it can reduce or prevent the bolts from being damaged and scrapped during cleaning. It provides efficient and high-quality cleaning while protecting the integrity of the bolts. It features low cost, long service life, and significantly improved production efficiency. The equipment has low power consumption, far lower than sandblasting or laser cleaning equipment. Physical rotation and friction enhance the cleaning effect, making it particularly suitable for deep corrosion and stubborn coatings. There is no need for high temperature or high pressure during operation, resulting in significant energy savings. The rotating steel wire brush uses a purely physical cleaning method, eliminating the need for chemical solvents and avoiding waste liquid discharge. It is easy to operate, highly adaptable, safe, and reliable. It produces no chemical pollution, has low energy consumption, and reduces waste emissions. The steel wire brush can be directly replaced after wear, and the generated metal scraps can be recycled, reducing waste emissions. It can be widely used in power plant maintenance, machinery manufacturing, automobile repair, construction, railway maintenance, and other fields.

[0046] In one embodiment, such as Figure 1 As shown, the rotating wire brush 2 includes a rotating wheel 21 and a wire brush 22 fixed on the outer edge of the rotating wheel 21; the rotating wheel 21 is fixedly connected to the output shaft of the drive motor.

[0047] The working principle of the above technical solution is as follows: This solution selects to set the wire brush on the outer edge of the circumference of the rotating wheel, and cleans the bolts to be cleaned as the rotating wheel rotates; the rotating wheel can be fixed on the output shaft of the drive motor by a shaft key, or the rotating wheel can have its own rotating shaft and the rotating shaft can be connected to the output shaft of the drive motor by a coupling, so that the rotating wheel can be rotated by the output shaft of the drive motor.

[0048] The beneficial effects of the above technical solution are as follows: the rotating wire brush device has a simple structure and low manufacturing cost, eliminating the need for expensive consumables or equipment maintenance compared to chemical cleaning or laser cleaning; the wire brush uses high-strength materials (such as stainless steel wire or copper-plated steel wire), resulting in a long service life and low replacement cost; the core components of the equipment (such as motors and bearings) are durable and easy to maintain; the cleaned bolts can be directly used for assembly or painting, reducing subsequent processing steps; by setting the wire brush on the circumferential outer edge of the rotating wheel, the uniformity of the wire movement speed is ensured, which helps maintain the bundle degree of the wires, improves the cleaning efficiency and effect on the bolts, and ensures the uniformity and consistency of cleaning at various points on the bolt surface.

[0049] In one embodiment, such as Figure 1As shown, the bolt clamping mechanism 1 uses at least two clamping plates with an L-shaped cross section. The horizontal plates of the different L-shaped clamping plates overlap and are fixedly connected in an adjustable manner. The vertical plates of the two overlapping L-shaped clamping plates are set horizontally in the same direction. The distance between the vertical plates of the two overlapping horizontal plates can be changed by adjusting the position of the two overlapping horizontal plates to achieve clamping and fixing of the bolt to be cleaned. The position where the vertical plates of the two overlapping L-shaped clamping plates clamp the bolt to be cleaned is provided with an avoidance notch 11. The wire brush 21 corresponds to the avoidance notch 11 at the fixed position of the bolt to be cleaned.

[0050] The working principle of the above technical solution is as follows: At least two L-shaped clamping plates are used as bolt clamping mechanisms. During use, a nut can be fitted onto the bolt, with the nut and bolt head located at opposite ends of the bolt. The bolt is then placed into the clearance notch between the vertical plates of two adjacent L-shaped clamping plates. By horizontally moving the clamping plates, the distance between the vertical plates of the two adjacent L-shaped clamping plates is reduced. After fixing the two adjacent L-shaped clamping plates, the bolt head and nut are clamped and fixed. A wire brush is used to rotate around the clearance notch to clean the bolt. After cleaning one side, the process is paused, the bolt is loosened, rotated in one direction, and re-clamped for cleaning. Changing the position of the nut on the bolt and clamping it with one end of the clearance notch cleans the area initially covered by the nut. Fitting two nuts and clamping them with one end of the clearance notch cleans the bolt head. Bolts can be cleaned alternately; that is, when adjusting a nut, another bolt can be cleaned simultaneously, thereby improving cleaning efficiency. Among them, the horizontal plates of the L-shaped clamping plates that overlap each other can be provided with mutually cooperating guide grooves and guide sliders. The guide grooves and guide sliders have mutually cooperating cross-sectional shapes. The distance adjustment is achieved by the guide slider sliding in the guide groove. The rotating wheel can be fixed on the output shaft of the drive motor by a shaft key, or the rotating wheel can have its own rotating shaft and the rotating shaft can be connected to the output shaft of the drive motor through a coupling, so that the rotating wheel can be rotated by the output shaft of the drive motor.

[0051] The beneficial effects of the above technical solution are as follows: The bolt clamping mechanism adopted in this solution has a simple structure, can be made from local materials, has low cost, and is easy to operate; the equipment is easy to operate, and ordinary workers can become proficient in using it after a short period of training; the modular design makes it easy to replace the brush head and clamps, and adapts to different cleaning needs.

[0052] In one embodiment, the bolt clamping mechanism is equipped with an adjusting mechanism 3, such as Figure 2 As shown, the adjustment mechanism 3 can employ an adjustment motor 31 and a rotating screw 32 driven by the adjustment motor 31. For example, one of the L-shaped clamping plates is fixedly connected to an adjustment plate 33 with an internal threaded hole, and the rotating screw 32 is engaged with the internal threaded hole of the adjustment plate 33. Figure 3As shown, the adjustment mechanism 3 can also adopt an adjustment cylinder 34 and a push rod 35 driven by the adjustment cylinder 34 to make linear motion. The end of the push rod away from the adjustment cylinder is fixedly connected to the vertical plate of one of the L-shaped clamping plates. The adjustment motor and the adjustment cylinder are mounted on the frame. The adjustment mechanism is used to automatically adjust the distance between the vertical plates of the two L-shaped clamping plates as needed to achieve clamping and fixing of the bolts to be cleaned.

[0053] The working principle of the above technical solution is as follows: This solution is equipped with an adjustment mechanism, which can automatically adjust the vertical distance between two adjacent L-shaped clamping plates, and can be applied to bolts of different models, specifications and sizes.

[0054] The beneficial effects of the above technical solution are: this solution eliminates the need for manual clamping, further improving efficiency and reducing the labor intensity of workers.

[0055] In one embodiment, such as Figure 4 As shown, the bolt clamping mechanism 1 can also employ a rotatable and coaxially opposite first head 12 and a second head (same as or similar to the first head, not shown in the figure). The first head 12 and the second head are mounted on the frame. The wire brush is located outside the head axis between the first head 12 and the second head. Both the first head 12 and the second head are equipped with clamping components. At least one of the first head 12 and the second head can be displaced under controlled conditions along the head axis. The clamping component 121 can employ multiple clamps capable of changing their distance from the head axis.

[0056] The clamping assembly 121 of the first machine head 12 is used to clamp the bolt head of the bolt 10 to be cleaned, and the longitudinal axis of the bolt 10 to be cleaned coincides with the axis of the machine head.

[0057] The clamping assembly of the second head is used to clamp a blind hole nut with internal thread that is compatible with the bolt to be cleaned. The bottom of the blind hole of the blind hole nut is provided with a pointed protrusion that is off-center from the axis of the head.

[0058] The working principle of the above technical solution is as follows: This solution uses a first machine head and a second machine head together as a bolt clamping mechanism. Both the first and second machine heads are equipped with motors for rotational power. During use, the second machine head clamps a blind hole nut with its opening facing the first machine head. By rotating the bolt head held by the first machine head, the relative distance between the first and second machine heads is adjusted, allowing the bolt to screw into the blind hole nut. The pointed protrusion inside the blind hole nut presses against the bolt's screw-in end face, thus preventing the bolt from falling out of the blind hole nut during cleaning. The first and second machine heads can fix both ends of the bolt and rotate synchronously for cleaning, or only one of the first and second machine heads can be used to fix one end of the bolt for rotation and cleaning, or both methods can be used in combination to achieve comprehensive bolt cleaning.

[0059] The beneficial effects of the above technical solution are as follows: by using the machine head as the bolt clamping mechanism, the bolt can rotate while being cleaned, eliminating the need to adjust the time of the bolt's circumferential direction, thus further improving cleaning efficiency. It also ensures that the time for the wire brush to clean each position of the bolt's circumference is balanced, guaranteeing the consistency of the cleaning effect at each position of the bolt's circumference.

[0060] In one embodiment, such as Figure 5 As shown, the bolt cleaning device based on a rotating wire brush also includes a robotic arm 4;

[0061] The robotic arm 4 is used to remove the cleaned bolts from the clamping position of the bolt clamping mechanism, and to pick up the bolts to be cleaned and place them into the clamping position of the bolt clamping mechanism.

[0062] The robotic arm 4 grips and contacts the bolts to be cleaned using flexible materials, such as rubber.

[0063] The working principle and beneficial effects of the above technical solution are as follows: This solution uses a robotic arm installed on the frame to load and unload bolts, completely replacing manual operation and further improving cleaning efficiency. The surface of the robotic arm 4 that grips and contacts the bolts is made of flexible material, which can avoid damage to the bolt threads.

[0064] In one embodiment, such as Figure 6 As shown, the bolt cleaning device based on a rotating wire brush also includes a cleaning control subsystem 5, which includes:

[0065] Bolt surface condition detection module 51 is used to perform tracking and detection on the bolt surface using machine vision to obtain bolt surface condition information;

[0066] The cleaning decision module 52 is used to determine whether cleaning is required and the cleaning mode to be used based on the bolt surface condition information, and to send a cleaning instruction to the cleaning execution module.

[0067] The cleaning module 53 is used to control the operating sequence and operating mode of the power equipment of mechanisms or components such as bolt clamping mechanism and rotary cleaning mechanism according to the cleaning instructions, and to carry out bolt cleaning.

[0068] The working principle of the above technical solution is as follows: This solution has an intelligent cleaning subsystem, which acquires environmental images to identify the target area of ​​the bolt and executes corresponding cleaning strategies. It performs specialized identification and patterned cleaning for different types of contamination on the bolt surface, realizing artificial intelligence control and multi-mode cleaning of bolts.

[0069] The beneficial effects of the above technical solution are as follows: Existing bolt cleaning equipment cannot sense the surface contamination of bolts, nor can it adaptively adjust the cleaning scheme according to the contamination status. This solution utilizes machine vision and deep learning technology to classify bolt contamination, determine the degree of cleanliness, and adjust the cleaning action in real time, improving the accuracy of contamination identification. It is suitable for complex cleaning scenarios to achieve fully automated, intelligent, and efficient bolt cleaning; it is applicable to various contaminants (rust, oil, coatings) and bolt materials (steel, aluminum, copper, etc.). It protects the integrity of bolt threads and improves the usability of cleaned bolts. It improves cleaning efficiency, reduces manual intervention, and is suitable for mass production. Through optimized structural design and multi-mode cleaning technology, it solves the problems of limited cleaning effect, high risk of bolt damage, unsafe manual operation, low automation, and insufficient environmental protection in existing technologies; it can handle various contaminants (rust, oil, coatings, etc.) without requiring equipment replacement for different stains; it has significant advantages such as thorough cleaning, bolt protection, high automation, and good environmental protection, and has broad application prospects and market value.

[0070] In one embodiment, the bolt surface condition detection module includes:

[0071] The multispectral imaging submodule is used to perform image analysis using multispectral imaging technology and a trained surface state classification model to identify whether there are stains and / or corrosion on the bolt surface; if stains are present, the type of stains is further identified.

[0072] The surface condition grading submodule is used to output the surface condition level of the bolt surface based on the stains and / or corrosion on the bolt surface using an AI grading algorithm and a ResNet convolutional network.

[0073] The working principle of the above technical solution is as follows: The surface state classification model of this solution can adopt a random forest model containing multiple decision trees, trained with a training set containing labeled spectral reflectance imaging, and validated with a corresponding validation set to complete the training; This solution adopts multispectral imaging technology to identify whether there are stains and / or corrosion on the bolt surface through image analysis; An AI grading algorithm is adopted to output the surface state level of the bolt surface based on a ResNet convolutional network; For example, the surface state level can be divided into 0-5 levels, where level 0 indicates no stains and corrosion, and level 5 indicates that stains and corrosion cover the entire surface and the stains and corrosion are relatively severe; The imaging light bands used by the multispectral imaging submodule can include visible light, near-infrared and ultraviolet bands.

[0074] The beneficial effects of the above technical solution are as follows: This solution achieves accurate identification of various pollutants (rust, oil, coating) by utilizing the spectral characteristics of different substances, thereby improving the identification accuracy; it is also beneficial for subsequent cleaning and control based on the corresponding pollutants, ensuring the cleaning effect while protecting the bolts from damage during the cleaning operation.

[0075] In one embodiment, the rotating wire brush is equipped with a cleaning fluid nozzle and a collection tank. The collection tank is located at the bottom of the rotating wire brush, and the cleaning fluid nozzle is positioned to be aligned with the wire brush. The cleaning fluid nozzle is connected to a liquid pump, and the suction port of the liquid pump is connected to different cleaning fluid storage tanks through a liquid supply branch pipe with a solenoid valve. The collection tank is used to collect the cleaning fluid that did not stick to the wire brush or was thrown out by the wire brush. The cleaning fluid may include clean water, soapy water, dishwashing liquid, etc.

[0076] It also includes a nitrogen supply mechanism, which includes a nitrogen storage tank, a solenoid valve and a nitrogen nozzle connected in sequence via gas pipelines. The nitrogen nozzle is aimed at the bolts fixed by the bolt clamping mechanism.

[0077] Based on the stains indicated in the bolt surface condition information, the cleaning decision module determines the type of cleaning fluid to be used and issues corresponding control commands to the gas pipeline solenoid valve, the liquid supply branch pipe solenoid valve, and the liquid pump.

[0078] The working principle of the above technical solution is as follows: The cleaning fluid nozzle, liquid pump, collection tank and nitrogen supply mechanism in this solution are all installed on the frame; based on the surface condition information of the bolt, it is determined whether cleaning is required and the cleaning mode to be used, and a cleaning command is sent to the cleaning module; for example, if the surface condition information of the bolt indicates that there are oil stains, then detergent is selected as the cleaning fluid, and control commands are issued to the gas pipeline solenoid valve, detergent supply branch pipe solenoid valve and liquid pump.

[0079] The beneficial effects of the above technical solution are as follows: This solution identifies the type of stain (oil / rust / organic matter) through machine vision and intelligently matches the cleaning solution accordingly. For example, detergent is used for oil stains, oxalic acid solution is used for rust, and sodium hydroxide solution is used for organic matter. Nitrogen instant drying technology is used to form an inert gas layer on the bolt surface, blocking oxidation reactions, blowing away residual droplets, achieving rapid drying, and avoiding the risk of secondary corrosion caused by water residue. The collection box can adopt a V-shaped guide channel design to implement cleaning solution recovery. The liquid supply branch pipe adopts a dual solenoid valve series design, keeping unselected cleaning solution pipelines physically isolated and preventing cross-contamination when switching cleaning solutions. The linkage start-stop logic of the liquid pump and nitrogen valve ensures that the cleaning solution is sprayed only when the wire brush contacts the bolt, and the nitrogen automatically turns on 0.5 seconds after cleaning is completed, avoiding gas waste.

[0080] In one embodiment, the cleaning control subsystem further includes:

[0081] The audio acquisition module is used to acquire the brush bristle friction acoustic signal of the wire brush in real time by configuring a MEMS acoustic sensor array, and to perform audio signal preprocessing to eliminate interference noise.

[0082] The steel wire wear assessment module is used to extract the energy entropy of the acoustic feature frequency band in the brush filament friction acoustic signal, and to perform steel wire wear assessment using a pre-established and trained brush filament wear diagnostic model to obtain the wear degree.

[0083] The wear compensation module is used to adjust the cleaning control parameters for compensation and issue a warning message when the wear level exceeds the preset wear threshold.

[0084] The working principle of the above technical solution is as follows: by collecting the acoustic signal of brush filament friction, the acoustic signal analysis is used for the health management of the wire brush. The extracted acoustic signal characteristic frequency band energy entropy is used as the wear index to implement the wire wear assessment. According to the assessment, the cleaning control parameters are adjusted as needed for compensation. The cleaning control parameters may include parameters that affect the cleaning effect, such as the rotation speed of the wire brush and the distance between the rotating shaft of the wire brush and the bolt. The brush filament wear diagnosis model can be established using wavelet packet-support vector machine (SVM) and trained using the acoustic signal characteristic frequency band energy entropy of the brush filament friction acoustic signal as training data.

[0085] The beneficial effects of the above technical solution are as follows: This solution, through wear compensation of the wire brush, ensures cleaning effect and efficiency on the one hand, and avoids repeated cleaning due to incomplete cleaning caused by brush failure; on the other hand, it avoids bolt damage caused by improper control; at the same time, issuing warning information can remind staff to take timely measures, such as replacing the wire brush, to ensure the use of subsequent bolt surface cleaning.

[0086] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A bolt cleaning device based on a rotating wire brush, characterized in that, It includes a bolt clamping mechanism and a rotary cleaning mechanism, wherein, The bolt clamping mechanism is used to fix the bolts to be cleaned, preventing them from coming off or falling off during cleaning. The rotary cleaning mechanism includes a drive motor and a rotating wire brush. The rotating wire brush is driven by the drive motor to rotate, and the wire brush is used to clean the surface of the bolts by rotating.

2. The bolt cleaning device based on a rotating wire brush according to claim 1, characterized in that, The rotating wire brush includes a rotating wheel and a wire brush fixed to the outer edge of the rotating wheel; the rotating wheel is fixedly connected to the output shaft of the drive motor.

3. The bolt cleaning device based on a rotating wire brush according to claim 1 or 2, characterized in that, The bolt clamping mechanism uses at least two L-shaped clamping plates. The horizontal plates of the different L-shaped clamping plates overlap and are fixedly connected in an adjustable manner. The vertical plates of the two overlapping L-shaped clamping plates are set horizontally in the same direction. The distance between the vertical plates of the two overlapping L-shaped clamping plates can be changed by adjusting the position of the two overlapping horizontal plates to achieve clamping and fixing of the bolt to be cleaned. The position where the vertical plates of the two overlapping L-shaped clamping plates clamp the bolt to be cleaned is provided with an avoidance notch. The avoidance notch of the fixed position of the wire brush and the bolt to be cleaned are corresponding.

4. The bolt cleaning device based on a rotating wire brush according to claim 3, characterized in that, The bolt clamping mechanism is equipped with an adjustment mechanism, which is used to automatically adjust the distance between the vertical plates of the two L-shaped clamping plates as needed to achieve clamping and fixing of the bolts to be cleaned.

5. The bolt cleaning device based on a rotating wire brush according to claim 1, characterized in that, The bolt clamping mechanism employs a rotatable, coaxially opposed first and second machine heads. The wire brush is located outside the machine head axis between the first and second machine heads. Both the first and second machine heads are equipped with clamping components. The clamping assembly of the first head is used to clamp the bolt head of the bolt to be cleaned, and the longitudinal axis of the bolt to be cleaned is coincident with the axis of the head. The clamping assembly of the second head is used to clamp a blind hole nut with internal thread that is compatible with the bolt to be cleaned. The bottom of the blind hole of the blind hole nut is provided with a pointed protrusion that is off-center from the axis of the head.

6. The bolt cleaning device based on a rotating wire brush according to claim 1, characterized in that, It also includes a robotic arm, which is used to remove the cleaned bolts from the clamping position of the bolt clamping mechanism, and to pick up the bolts to be cleaned and place them into the clamping position of the bolt clamping mechanism. The robotic arm grips and contacts the bolts to be cleaned using a flexible material.

7. The bolt cleaning device based on a rotating wire brush according to claim 1, characterized in that, It also includes the cleanup control subsystem, which includes: The bolt surface condition detection module is used to track and detect the bolt surface using machine vision to obtain bolt surface condition information. The cleaning decision module is used to determine whether cleaning is required and the cleaning mode to be used based on the bolt surface condition information, and to send cleaning instructions to the cleaning execution module. The cleaning module is used to control the bolt clamping mechanism and the rotating cleaning mechanism to perform bolt cleaning according to the cleaning instructions.

8. The bolt cleaning device based on a rotating wire brush according to claim 7, characterized in that, The bolt surface condition detection module includes: The multispectral imaging submodule is used to perform image analysis using multispectral imaging technology and a trained surface state classification model to identify whether there are stains and / or corrosion on the bolt surface; if stains are present, the type of stains is further identified. The surface condition grading submodule is used to output the surface condition level of the bolt surface based on the stains and / or corrosion on the bolt surface using an AI grading algorithm and a ResNet convolutional network.

9. The bolt cleaning device based on a rotating wire brush according to claim 7, characterized in that, The rotating wire brush is equipped with a cleaning fluid nozzle and a collection tank. The collection tank is located at the bottom of the rotating wire brush. The cleaning fluid nozzle is positioned to be aligned with the wire brush. The cleaning fluid nozzle is connected to a liquid pump. The suction port of the liquid pump is connected to different cleaning fluid storage tanks through a liquid supply branch pipe with a solenoid valve. The collection tank is used to collect the cleaning fluid that did not stick to the wire brush or was thrown out by the wire brush. The bolt cleaning device also includes a nitrogen supply mechanism, which includes a nitrogen storage tank, a solenoid valve and a nitrogen nozzle connected in sequence via a gas pipeline. The nitrogen nozzle is aimed at the bolts fixed by the bolt clamping mechanism. Based on the stains indicated in the bolt surface condition information, the cleaning decision module determines the type of cleaning fluid to be used and issues corresponding control commands to the gas pipeline solenoid valve, the liquid supply branch pipe solenoid valve, and the liquid pump.

10. The bolt cleaning device based on a rotating wire brush according to claim 7, characterized in that, The cleanup control subsystem also includes: The audio acquisition module is used to acquire the brush bristle friction acoustic signal of the wire brush in real time by configuring a MEMS acoustic sensor array, and to perform audio signal preprocessing to eliminate interference noise. The steel wire wear assessment module is used to extract the energy entropy of the acoustic feature frequency band in the brush filament friction acoustic signal, and to perform steel wire wear assessment using a pre-established and trained brush filament wear diagnostic model to obtain the wear degree. The wear compensation module is used to adjust the cleaning control parameters for compensation and issue a warning message when the wear level exceeds the preset wear threshold.

Images