Marine low-speed machine bolt thread cleaning device and cleaning method thereof

Abstract

The invention relates to the field of cleaning of marine parts, in particular to a marine low-speed machine bolt thread cleaning device and a cleaning method thereof. The marine low-speed machine bolt thread cleaning device comprises a connecting sleeve, a mounting seat, a cleaning roller, a driving mechanism and a driving mechanism, a cleaning knife is arranged in the connecting sleeve, a knife edge of the cleaning knife is zigzag, a base is fixedly connected to the bottom end of the connecting sleeve, the mounting seat is mounted at one end of the base, and motors are fixedly connected to the top end of the mounting seat at equal intervals; the output end of the motor is fixedly connected with a sleeve, the bottom end of the base is fixedly connected with an electric push rod, the electric push rod is matched with the mounting base, and a cleaning roller is mounted on the side, away from the mounting base, of the base and used for cleaning the edge of the cleaning knife. According to the thread cleaning tool, the electric driving device is arranged, the cleaning tool bit can be accurately controlled and efficiently driven, and compared with a traditional manual cleaning mode, the cleaning time is greatly shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of cleaning of marine parts, in particular to a marine low-speed engine bolt thread cleaning device and a cleaning method thereof. Background Art

[0002] In the daily operation of the ship's main engine, in order to ensure its stable operation and extend its service life, regular maintenance of related components is required at certain operating times; these maintenance work involves key components such as the fuel system and lubricating oil system, which contain a large number of special bolts installed with thread sealants; these bolts operate in the high temperature and high pressure environment of the ship's main engine, and are often penetrated by fuel or lubricating oil, forming sludge accumulation on the threads that is difficult to clean;

[0003] When performing maintenance on fuel and lubricating oil components, it is usually necessary to remove these special bolts for in-depth inspection and repair of the components. After the maintenance is completed, in order to ensure the tightness of the bolts and prevent possible leakage problems in the future, the threads of the bolts must be thoroughly cleaned, the original thread sealant, sludge and other impurities must be removed, and new thread sealant must be reapplied for reinstallation. However, if the original thread sealant and sludge are not completely removed during the cleaning process, it will make it difficult to tighten the bolts and the expected tightening torque cannot be achieved, which may cause leakage problems, or even more serious damage to the bolts and threaded holes, such as rotten teeth, which will make it impossible to install the bolts again, and eventually the entire component will have to be replaced, which greatly increases the maintenance cost.

[0004] At present, during the maintenance of ship main engines, the cleaning of bolt threads mainly relies on manual operation, using some sharp small cone rods, utility blades or compressed air and other tools for scraping; however, this manual cleaning method is not only inefficient, but also often difficult to completely remove impurities such as thread glue and sludge on the threads, which brings many inconveniences and potential risks to subsequent maintenance work.

[0005] Therefore, it is necessary to provide a new marine low-speed machine bolt thread cleaning device and cleaning method thereof to solve the above-mentioned technical problems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a marine low-speed engine bolt thread cleaning device and a cleaning method thereof.

[0007] The marine low-speed engine bolt thread cleaning device provided by the present invention comprises: a connecting sleeve, a mounting seat, a cleaning roller, a driving mechanism and a driving mechanism. A cleaning knife is arranged inside the connecting sleeve, and the blade edge of the cleaning knife is serrated. The bottom end of the connecting sleeve is fixedly connected to a base, and a mounting seat is installed at one end of the base. A motor is fixedly connected to the top of the mounting seat at an equal distance, and a sleeve is fixedly connected to the output end of the motor. An electric push rod is fixedly connected to the bottom end of the base, and the electric push rod is installed in cooperation with the mounting seat. A cleaning roller is installed on a side of the base away from the mounting seat, and the cleaning roller is used to clean the blade edge of the cleaning knife. The bottom end of the mounting seat is installed with a driving mechanism, and the end of the base close to the cleaning roller is installed with a driving mechanism, and the driving mechanism is installed in cooperation with the electric push rod.

[0008] Preferably, the driving mechanism includes: a slider, a push rod, an annular groove, an L-shaped plug plate, a long gear and a driving gear. The output end of the electric push rod is fixedly connected to the slider, which is slidably connected to the inner wall of the base, and a push rod is fixedly connected to the bottom axis of the mounting seat. Annular grooves are equidistantly provided at the bottom end of the push rod. The inner wall of the slider is slidably connected to the L-shaped plug plate, one end of the L-shaped plug plate is slidably connected to the annular groove, the bottom end of the push rod is fixedly connected to the long gear, one side of the slider is fixedly connected to the motor, the output end of the motor is fixedly connected to the driving gear, and the driving gear is meshed with the long gear. The mounting seat is divided into three sleeves, and the motor rotates 120 degrees at a time so that one of the sleeves is opposite to the connecting sleeve, and the outer wall of the sleeve is threaded with a bolt for fixing the bolt head of the marine low-speed engine.

[0009] Preferably, the driving mechanism includes: a special-shaped rod, a slide groove, a support and a spring, the output end of the electric push rod is fixedly connected to the special-shaped rod, one end of the special-shaped rod is close to one side of the cleaning roller, a slide groove is provided on the inner wall of the base, the inner wall of the slide groove is slidably connected to the support, one side of the support is fixedly connected to a spring, the side of the spring away from the support is slidably connected to the inner wall of the slide groove, one side of the support is fixedly connected to a motor, the other side of the support is rotatably connected to the cleaning roller, the output end of the motor is fixedly connected to the axis of the cleaning roller, the outer wall of the cleaning roller is equidistantly provided with long bristles, and one end of the special-shaped rod is in contact with one side of the motor.

[0010] Preferably, a nut is fixedly connected to the top of the connecting sleeve, a threaded rod is threadedly connected to the inner wall of the nut, an L-shaped connecting rod is rotatably connected to one end of the threaded rod, and the L-shaped connecting rod is fixedly connected to the cleaning knife by bolts.

[0011] Preferably, the L-shaped plug board is made of wear-resistant metal material, and a magnet is installed on the side of the slider close to the L-shaped plug board, and the magnet is used to fix the position of the L-shaped plug board.

[0012] Preferably, the length of the threaded rod is less than the height of the cleaning knife.

[0013] Preferably, the connecting sleeve is made of transparent material.

[0014] The present invention provides a cleaning method for a marine low-speed engine bolt thread cleaning device, the steps of which are as follows:

[0015] S1. Fixing of marine low-speed bolts

[0016] First, align the bolt head of the marine low-speed engine with the sleeve on the cleaning device. The mounting seat is divided into three sleeves, and a single rotation of the motor by 120 degrees can make one of the sleeves face the connecting sleeve; therefore, before operation, it is necessary to ensure that the motor is in the initial position so that one sleeve is aligned with the connecting sleeve;

[0017] Next, start the electric push rod so that its output end pushes the slider to slide on the inner wall of the base; the L-shaped plug plate on the inner wall of the slider will be inserted into the annular groove at the bottom end of the push rod as the slider moves, thereby fixing the position of the mounting seat;

[0018] At the same time, the motor on one side of the slider is started, driving the active gear to rotate; the active gear is meshed with the long gear, so the long gear will rotate with the rotation of the active gear; because the push rod is fixedly connected to the mounting seat, the mounting seat and the sleeve thereon will adjust their positions with the rotation of the long gear until one of the sleeves is facing and tightly fitting the bolt head;

[0019] Finally, tighten the bolts threaded on the outer wall of the sleeve to fix the bolts of the marine low-speed engine.

[0020] S2. Cleaning of marine bolts with cleaning knife

[0021] Preparation stage: After fixing the bolt, the position of the cleaning knife needs to be adjusted so that it can fit the threaded part of the bolt. The inner wall of the nut at the top of the connecting sleeve is threaded with a threaded rod, and one end of the threaded rod is rotatably connected to an L-shaped connecting rod. The L-shaped connecting rod and the cleaning knife are fixedly connected by bolts; rotate the nut to move the threaded rod up and down in the nut. Since the threaded rod is rotatably connected to the L-shaped connecting rod, the movement of the threaded rod will drive the L-shaped connecting rod and the cleaning knife to move up and down, thereby adjusting the fit between the cleaning knife and the threaded part of the bolt; after adjusting to the appropriate position, use bolts to fix the L-shaped connecting rod and the cleaning knife to ensure that the cleaning knife does not shake during the cleaning process, and ensure that the electric push rod and all related motors are in standby mode; the serrated blade of the cleaning knife should be accurately aligned with the threaded part of the bolt;

[0022] Start the motor and the electric push rod: First, start the motor that is equidistantly fixed to the top of the mounting seat to make the sleeve rotate slightly; then, start the motor in the driving mechanism installed in conjunction with the electric push rod, but at this time, do not directly move the electric push rod, but let the motor be in standby mode to prepare for subsequent reciprocating motion;

[0023] Cleaning knife working: Next, manually rotate the threaded rod so that its output end pushes the connecting sleeve and the cleaning knife inside to move back and forth along the thread direction of the bolt; during this process, the serrated blade of the cleaning knife will penetrate into the thread gap and effectively scrape off the dirt, oil stains and corrosion on the thread surface;

[0024] Monitoring and adjustment: During the cleaning process, the cleaning effect should be closely monitored. If necessary, the cleaning effect can be optimized by fine-tuning the propulsion speed of the electric actuator and / or adjusting the position of the cleaning knife. At the same time, be careful to avoid excessive force that may cause damage to the bolts or cleaning device;

[0025] Cleaning is completed: When it is observed that the thread surface becomes clean and there is no obvious residue, stop the advancement of the electric push rod and turn off all related motors; at this time, the cleaning knife has completed the cleaning of the marine bolt thread.

[0026] S3, cleaning roller cleaning the cleaning knife

[0027] After the bolt thread is cleaned, the residue on the cleaning knife needs to be cleaned. The driving mechanism includes a special-shaped rod, a slide groove, a support and a spring; one end of the special-shaped rod fixedly connected to the output end of the electric push rod is close to the cleaning roller;

[0028] Start the electric push rod, so that its output end pushes the special-shaped rod to move; one end of the special-shaped rod will contact the motor on one side of the support and push it to move; because the support is slidably connected in the slide groove, and the spring provides a certain elastic force for the support, the push of the special-shaped rod will make the support and the cleaning roller move towards the cleaning knife;

[0029] The outer wall of the cleaning roller is provided with long bristles at equal intervals. When the cleaning roller contacts the cleaning knife, the long bristles will brush away the residue on the cleaning knife.

[0030] After cleaning is completed, the electric push rod moves in the opposite direction to separate the special-shaped rod from the motor; under the elastic force of the spring, the support and the cleaning roller will return to their initial positions.

[0031] Compared with the related art, the marine low-speed engine bolt thread cleaning device and cleaning method provided by the present invention have the following beneficial effects:

[0032] Improve cleaning efficiency: By being equipped with an electric drive device, the thread cleaning tool of the present invention can achieve precise control and efficient driving of the cleaning blade head. Compared with traditional manual cleaning methods, it greatly shortens the cleaning time and improves work efficiency.

[0033] Ensure cleaning quality: The cleaning blade is made of special material with sufficient hardness and toughness to easily scrape off impurities such as thread glue and sludge on the thread without causing any damage to the bolts and threaded holes, ensuring the thoroughness of cleaning and the integrity of the bolts.

[0034] Reduced maintenance costs: The use of the thread cleaning tool of the present invention can effectively avoid difficulties in tightening bolts, leakage problems, and damage to bolts and threaded holes caused by incomplete cleaning, thereby reducing the frequency of replacing parts and reducing maintenance costs.

[0035] Improve the stability of the ship's main engine: Clean bolt threads can ensure the tightness of the bolts and prevent leakage of fuel or lubricating oil, thereby improving the stability and operating efficiency of the ship's main engine and extending the service life of the main engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of the marine low-speed engine bolt thread cleaning device provided by the present invention;

[0037] Figure 2 for Figure 1 A schematic diagram of the structure inside the connecting sleeve shown;

[0038] Figure 3 for Figure 1 The structural diagram of the driving mechanism is shown.

[0039] Numbers in the figure: 1. connecting sleeve; 2. cleaning knife; 3. base; 4. mounting seat; 5. sleeve; 6. electric push rod; 7. cleaning roller; 8. driving mechanism; 9. driving mechanism; 10. nut; 11. threaded rod; 12. L-shaped connecting rod; 81. sliding block; 82. push rod; 83. annular groove; 84. L-shaped plug plate; 85. long gear; 86. driving gear; 91. special-shaped rod; 92. slide groove; 93. support; 94. spring. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0042] See also Figure 1-3A marine low-speed engine bolt thread cleaning device, the marine low-speed engine bolt thread cleaning device comprises: a connecting sleeve 1, a mounting seat 4, a cleaning roller 7, a driving mechanism 8 and a driving mechanism 9, a cleaning knife 2 is arranged inside the connecting sleeve 1, the blade of the cleaning knife 2 is serrated, the bottom end of the connecting sleeve 1 is fixedly connected to a base 3, one end of the base 3 is installed with a mounting seat 4, the top of the mounting seat 4 is equidistantly fixedly connected to a motor, the output end of the motor is fixedly connected to a sleeve 5, the bottom end of the base 3 is fixedly connected to an electric push rod 6, the electric push rod 6 is installed in cooperation with the mounting seat 4, and the base 3 is away from the mounting seat. A cleaning roller 7 is installed on one side of the seat 4, and the cleaning roller 7 is used to clean the blade of the cleaning knife 2. A driving mechanism 8 is installed at the bottom end of the mounting seat 4, and a driving mechanism 9 is installed at the end of the base 3 close to the cleaning roller 7. The driving mechanism 9 is installed in cooperation with the electric push rod 6. A nut 10 is fixedly connected to the top of the connecting sleeve 1, and a threaded rod 11 is threadedly connected to the inner wall of the nut 10. One end of the threaded rod 11 is rotatably connected to an L-shaped connecting rod 12. The L-shaped connecting rod 12 and the cleaning knife 2 are fixedly connected by bolts. The length of the threaded rod 11 is less than the height of the cleaning knife 2, and the connecting sleeve 1 is made of transparent material.

[0043] See also Figure 2-3 The driving mechanism 8 includes: a slider 81, a push rod 82, an annular groove 83, an L-shaped plug plate 84, a long gear 85 and a driving gear 86. The output end of the electric push rod 6 is fixedly connected with the slider 81, and the slider 81 is slidably connected to the inner wall of the base 3. The bottom axis of the mounting seat 4 is fixedly connected with the push rod 82. The bottom end of the push rod 82 is equidistantly provided with an annular groove 83. The inner wall of the slider 81 is slidably connected with the L-shaped plug plate 84. One end of the L-shaped plug plate 84 is slidably connected to the annular groove 83. The bottom end of the push rod 82 is fixedly connected with a long gear. 85, one side of the slider 81 is fixedly connected with a motor, the output end of the motor is fixedly connected with a driving gear 86, the driving gear 86 is meshed with the long gear 85, the mounting seat 4 is divided into three sleeves 5, the motor rotates 120 degrees at a time, so that one of the sleeves 5 is opposite to the connecting sleeve 1, the outer wall of the sleeve 5 is threadedly connected with a bolt for fixing the bolt head of the marine low-speed engine, the L-shaped plug plate 84 is made of metal wear-resistant material, and a magnet is installed on the side of the slider 81 close to the L-shaped plug plate 84, and the magnet is used to fix the position of the L-shaped plug plate 84.

[0044] See also Figure 2-3The driving mechanism 9 includes: a special-shaped rod 91, a slide groove 92, a support 93 and a spring 94. The output end of the electric push rod 6 is fixedly connected to the special-shaped rod 91, one end of the special-shaped rod 91 is close to the side of the cleaning roller 7, a slide groove 92 is provided on the inner wall of the base 3, and the inner wall of the slide groove 92 is slidably connected to the support 93. One side of the support 93 is fixedly connected to a spring 94, and the side of the spring 94 away from the support 93 is slidably connected to the inner wall of the slide groove 92. One side of the support 93 is fixedly connected to a motor, and the other side of the support 93 is rotatably connected to the cleaning roller 7. The output end of the motor is fixedly connected to the axis of the cleaning roller 7, and the outer wall of the cleaning roller 7 is equidistantly provided with long bristles. One end of the special-shaped rod 91 is in contact with one side of the motor.

[0045] Please refer to FIG. 3 , a cleaning method of a marine low-speed engine bolt thread cleaning device provided by the present invention, the steps of which are as follows:

[0046] S1. Fixing of marine low-speed bolts

[0047] First, align the bolt head of the marine low-speed engine with the sleeve 5 on the cleaning device. The mounting seat 4 is divided into three sleeves 5, and a single rotation of the motor by 120 degrees can make one of the sleeves 5 face the connecting sleeve 1; therefore, before operation, it is necessary to ensure that the motor is in the initial position so that one sleeve 5 is aligned with the connecting sleeve 1;

[0048] Next, the electric push rod 6 is started, so that its output end pushes the slider 81 to slide on the inner wall of the base 3; the L-shaped plug plate 84 on the inner wall of the slider 81 will be inserted into the annular groove 83 at the bottom end of the push rod 82 as the slider 81 moves, thereby fixing the position of the mounting seat 4;

[0049] At the same time, the motor on one side of the slider 81 is started, driving the driving gear 86 to rotate; the driving gear 86 is meshed and connected with the long gear 85, so the long gear 85 will rotate with the rotation of the driving gear 86; because the push rod 82 is fixedly connected to the mounting seat 4, the mounting seat 4 and the sleeve 5 thereon will adjust their positions with the rotation of the long gear 85 until one of the sleeves 5 is facing and tightly fitting the bolt head;

[0050] Finally, the bolts threadedly connected to the outer wall of the sleeve 5 are tightened to fix the bolts of the marine low-speed engine.

[0051] S2. Cleaning of marine bolts with cleaning knife

[0052] Preparation stage: After the bolt is fixed, the position of the cleaning knife 2 needs to be adjusted so that it can fit the threaded part of the bolt. The inner wall of the nut 10 at the top of the connecting sleeve 1 is threadedly connected with a threaded rod 11, and one end of the threaded rod 11 is rotatably connected with an L-shaped connecting rod 12. The L-shaped connecting rod 12 and the cleaning knife 2 are fixedly connected by bolts; rotate the nut 10 to move the threaded rod 11 up and down in the nut 10. Since the threaded rod 11 is rotatably connected to the L-shaped connecting rod 12, the movement of the threaded rod 11 will drive the L-shaped connecting rod 12 and the cleaning knife 2 to move up and down, thereby adjusting the fit between the cleaning knife 2 and the threaded part of the bolt; after adjusting to the appropriate position, use bolts to fix the L-shaped connecting rod 12 and the cleaning knife 2 to ensure that the cleaning knife 2 does not shake during the cleaning process, and ensure that the electric push rod 6 and all related motors are in standby mode; the serrated blade of the cleaning knife 2 should be accurately aligned with the threaded part of the bolt;

[0053] Start the motor and the electric push rod: First, start the motor fixedly connected to the top of the mounting seat 4 at an equal distance, so that the sleeve 5 rotates slightly; then, start the motor in the driving mechanism 9 installed in conjunction with the electric push rod 6 and connect it through the support 93, but at this time, do not directly move the electric push rod 6, but let the motor be in a standby state to prepare for subsequent reciprocating motion;

[0054] Cleaning knife working: Next, manually rotate the threaded rod so that its output end pushes the connecting sleeve 1 and the cleaning knife 2 inside to move back and forth along the thread direction of the bolt; during this process, the serrated blade of the cleaning knife 2 will penetrate into the thread gap and effectively scrape off the dirt, oil stains and corrosion on the thread surface;

[0055] Monitoring and adjustment: During the cleaning process, the cleaning effect should be closely monitored. If necessary, the cleaning effect can be optimized by fine-tuning the propulsion speed of the electric push rod 6 and / or adjusting the position of the cleaning knife 2. At the same time, be careful to avoid excessive force that may cause damage to the bolts or cleaning device;

[0056] Completion of cleaning: When it is observed that the thread surface becomes clean and has no obvious residue, the electric push rod 6 is stopped from advancing and all related motors are turned off; at this time, the cleaning knife 2 has completed the cleaning work on the thread of the marine bolt.

[0057] S3, cleaning roller cleaning the cleaning knife

[0058] After the bolt thread is cleaned, the residue on the cleaning knife 2 needs to be cleaned. The driving mechanism 9 includes a special-shaped rod 91, a slide groove 92, a support 93 and a spring 94; one end of the special-shaped rod 91 fixedly connected to the output end of the electric push rod 6 is close to the cleaning roller 7;

[0059] Start the electric push rod 6, so that its output end pushes the special-shaped rod 91 to move; one end of the special-shaped rod 91 will contact the motor on one side of the support 93 and push it to move; because the support 93 is slidably connected in the slide groove 92, and the spring 94 provides a certain elastic force for the support 93, the push of the special-shaped rod 91 will make the support 93 and the cleaning roller 7 move toward the cleaning knife 2;

[0060] The outer wall of the cleaning roller 7 is provided with long bristles at equal intervals. When the cleaning roller 7 contacts the cleaning blade 2, the long bristles will brush away the residue on the cleaning blade 2.

[0061] After cleaning is completed, the electric push rod 6 moves in the reverse direction to separate the special-shaped rod 91 from the motor; under the elastic force of the spring 94, the support 93 and the cleaning roller 7 will return to the initial position.

[0062] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A marine low-speed engine bolt thread cleaning device, characterized in that: include: A connecting sleeve (1), wherein a cleaning knife (2) is provided inside the connecting sleeve (1), the blade of the cleaning knife (2) is serrated, and the bottom end of the connecting sleeve (1) is fixedly connected to a base (3); A mounting seat (4), one end of the base (3) is mounted with the mounting seat (4), the top of the mounting seat (4) is equidistantly fixedly connected with a motor, the output end of the motor is fixedly connected with a sleeve (5), the bottom end of the base (3) is fixedly connected with an electric push rod (6), and the electric push rod (6) is mounted in coordination with the mounting seat (4); A cleaning roller (7), a cleaning roller (7) is installed on a side of the base (3) away from the mounting seat (4), and the cleaning roller (7) is used to clean the blade of the cleaning knife (2); A driving mechanism (8), wherein the bottom end of the mounting seat (4) is provided with a driving mechanism (8); A driving mechanism (9) is installed at one end of the base (3) close to the cleaning roller (7), and the driving mechanism (9) is installed in coordination with the electric push rod (6).

2. The marine low-speed engine bolt thread cleaning device according to claim 1, characterized in that: The driving mechanism (8) comprises: a slider (81), a push rod (82), an annular groove (83), an L-shaped plug plate (84), a long gear (85) and a driving gear (86); the output end of the electric push rod (6) is fixedly connected with the slider (81); the slider (81) is slidably connected to the inner wall of the base (3); the bottom end of the mounting seat (4) is fixedly connected with the push rod (82); the bottom end of the push rod (82) is equidistantly provided with annular grooves (83); the inner wall of the slider (81) is slidably connected with the L-shaped plug plate (84); the L-shaped plug plate (86) is slidably connected to the inner wall of the slider (81); One end of the push rod (82) is slidably connected to the annular groove (83), the bottom end of the push rod (82) is fixedly connected to a long gear (85), one side of the slider (81) is fixedly connected to a motor, the output end of the motor is fixedly connected to a driving gear (86), the driving gear (86) is meshedly connected with the long gear (85), the mounting seat (4) is divided into three sleeves (5), the motor rotates 120 degrees at a time, so that one of the sleeves (5) is opposite to the connecting sleeve (1), and the outer wall of the sleeve (5) is threadedly connected with a bolt for fixing the bolt head of the marine low-speed engine.

3. The marine low-speed engine bolt thread cleaning device according to claim 1, characterized in that: The driving mechanism (9) comprises: a special-shaped rod (91), a slide groove (92), a support (93) and a spring (94); the output end of the electric push rod (6) is fixedly connected to the special-shaped rod (91); one end of the special-shaped rod (91) is close to one side of the cleaning roller (7); the inner wall of the base (3) is provided with a slide groove (92); the inner wall of the slide groove (92) is slidably connected to the support (93); one side of the support (93) is fixedly connected to the spring (94); the side of the spring (94) away from the support (93) is slidably connected to the inner wall of the slide groove (92); one side of the support (93) is fixedly connected to the motor; the other side of the support (93) is rotatably connected to the cleaning roller (7); the output end of the motor is fixedly connected to the axis of the cleaning roller (7); the outer wall of the cleaning roller (7) is equidistantly provided with long bristles; one end of the special-shaped rod (91) is in contact with one side of the motor.

4. The marine low-speed engine bolt thread cleaning device according to claim 1, characterized in that: A nut (10) is fixedly connected to the top of the connecting sleeve (1), a threaded rod (11) is threadedly connected to the inner wall of the nut (10), one end of the threaded rod (11) is rotatably connected to an L-shaped connecting rod (12), and the L-shaped connecting rod (12) is fixedly connected to the cleaning knife (2) by means of bolts.

5. The marine low-speed engine bolt thread cleaning device according to claim 2, characterized in that: The L-shaped plug board (84) is made of a wear-resistant metal material, and a magnet is installed on one side of the slider (81) close to the L-shaped plug board (84), and the magnet is used to fix the position of the L-shaped plug board (84).

6. The marine low-speed engine bolt thread cleaning device according to claim 1, characterized in that: The length of the threaded rod (11) is smaller than the height of the cleaning knife (2).

7. The marine low-speed engine bolt thread cleaning device according to claim 1, characterized in that: The connecting sleeve (1) is made of transparent material.

8. The cleaning method of the marine low-speed engine bolt thread cleaning device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Fixing of marine low-speed bolts First, align the bolt head of the marine low-speed engine with the sleeve (5) on the cleaning device. The mounting seat (4) is divided into three sleeves (5), and a single rotation of the motor by 120 degrees can make one of the sleeves (5) face the connecting sleeve (1); therefore, before operation, it is necessary to ensure that the motor is in the initial position so that one sleeve (5) is aligned with the connecting sleeve (1); Next, the electric push rod (6) is started, so that its output end pushes the slider (81) to slide on the inner wall of the base (3); the L-shaped plug plate (84) on the inner wall of the slider (81) is inserted into the annular groove (83) at the bottom end of the push rod (82) as the slider (81) moves, thereby fixing the position of the mounting seat (4); At the same time, the motor on one side of the slider (81) is started, driving the driving gear (86) to rotate; the driving gear (86) is meshed with the long gear (85), so the long gear (85) will rotate with the rotation of the driving gear (86); because the push rod (82) is fixedly connected to the mounting seat (4), the mounting seat (4) and the sleeve (5) thereon will adjust their positions with the rotation of the long gear (85) until one of the sleeves (5) is directly opposite to and tightly fits the bolt head; Finally, the bolts threadedly connected to the outer wall of the sleeve (5) are tightened to fix the bolts of the marine low-speed engine. S2. Cleaning of marine bolts with cleaning knife Preparation stage: After the bolt is fixed, the position of the cleaning knife (2) needs to be adjusted so that it can fit the threaded part of the bolt. The inner wall of the nut (10) at the top of the connecting sleeve (1) is threadedly connected to a threaded rod (11), and one end of the threaded rod (11) is rotatably connected to an L-shaped connecting rod (12). The L-shaped connecting rod (12) and the cleaning knife (2) are fixedly connected by bolts; the nut (10) is rotated to move the threaded rod (11) up and down in the nut (10). Since the threaded rod (11) is rotatably connected to the L-shaped connecting rod (12), the movement of the threaded rod (11) will drive the L-shaped connecting rod (12) and the cleaning knife (2) to move up and down, thereby adjusting the degree of fit between the cleaning knife (2) and the threaded portion of the bolt; after adjusting to a suitable position, the L-shaped connecting rod (12) and the cleaning knife (2) are fixedly connected with bolts to ensure that the cleaning knife (2) does not shake during the cleaning process, and to ensure that the electric push rod (6) and all related motors are in a standby state; the serrated blade of the cleaning knife (2) should be accurately aligned with the threaded portion of the bolt; Start the motor and the electric push rod: First, start the motor fixedly connected to the top of the mounting seat (4) at an equal distance, so that the sleeve (5) rotates slightly; then, start the motor in the driving mechanism (9) installed in conjunction with the electric push rod (6) (connected through the support 93), but at this time, do not directly move the electric push rod (6), but let the motor be in a standby state to prepare for the subsequent reciprocating motion; Cleaning knife operation: Next, manually rotate the threaded rod so that its output end pushes the connecting sleeve (1) and the cleaning knife (2) inside to move back and forth along the thread direction of the bolt; during this process, the serrated blade of the cleaning knife (2) will penetrate deep into the thread gap and effectively scrape off dirt, oil stains and corrosion on the thread surface; Monitoring and adjustment: During the cleaning process, the cleaning effect should be closely monitored. If necessary, the cleaning effect can be optimized by fine-tuning the propulsion speed of the electric push rod (6) and / or adjusting the position of the cleaning knife (2). At the same time, be careful to avoid excessive force that may damage the bolts or the cleaning device. Cleaning is completed: when it is observed that the thread surface becomes clean and has no obvious residue, the electric push rod (6) is stopped from advancing and all related motors are turned off; at this point, the cleaning knife (2) has completed the cleaning of the marine bolt thread. S3, cleaning roller cleaning the cleaning knife After the bolt threads are cleaned, it is necessary to clean the residue on the cleaning knife (2). The driving mechanism (9) includes a special-shaped rod (91), a slide groove (92), a support (93) and a spring (94); one end of the special-shaped rod (91) to which the output end of the electric push rod (6) is fixedly connected is close to the cleaning roller (7); The electric push rod (6) is started, so that its output end pushes the special-shaped rod (91) to move; one end of the special-shaped rod (91) will contact the motor on one side of the support (93) and push it to move; because the support (93) is slidably connected in the slide groove (92), and the spring (94) provides a certain elastic force for the support (93), the push of the special-shaped rod (91) will cause the support (93) and the cleaning roller (7) to move in the direction of the cleaning knife (2); The outer wall of the cleaning roller (7) is provided with long bristles at equal intervals, and when the cleaning roller (7) contacts the cleaning knife (2), the long bristles will brush away the residue on the cleaning knife (2); After cleaning is completed, the electric push rod (6) moves in the reverse direction to separate the special-shaped rod (91) from the motor; under the elastic force of the spring (94), the support (93) and the cleaning roller (7) will return to their initial positions.

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