A high-pressure seamless gas cylinder inner wall visual spraying mechanism and its application method

Abstract

This invention discloses a visual spraying mechanism for the inner wall of a high-pressure seamless gas cylinder and its usage method. The mechanism includes a long, narrow shell and a support structure, a visual structure, and a spraying structure connected sequentially from back to front within the shell. The support structure and the visual structure, as well as the spraying structure and the visual structure, are connected via quick-connect couplings. The method includes: 1. Fixing the high-pressure seamless gas cylinder; 2. Determining the area to be sprayed; 3. Supporting the visual spraying mechanism; 4. Spraying the area to be sprayed; 5. Retracting the support structure; 6. Spraying the remaining areas to be sprayed. This invention uses the support structure, visual structure, and spraying structure sequentially connected within the long, narrow shell to spray paint the inner wall of a high-pressure seamless gas cylinder, enabling rapid daily inspection and repair of small-diameter pressure vessels. Furthermore, the entire mechanism is long and narrow, allowing for localized painting inside the gas cylinder, and the various modules are connected and replaced via quick-connect couplings.

Description

Technical Field

[0001] This invention belongs to the field of seamless gas cylinder internal processing technology, and in particular relates to a high-pressure seamless gas cylinder inner wall visual spraying mechanism and its usage method. Background Technology

[0002] High-pressure seamless gas cylinders are refillable, mobile pressure vessels used to store permanent gases or high-pressure liquefied gases, and are widely used in petroleum, chemical, and military fields. Due to factors such as the quality of the gas source and the operating environment, a significant number of cylinders have been found to have rust on their inner surfaces during routine inspections. This corrosion severely affects the quality of the stored gas, posing a potential safety hazard. Because of the small diameter and large internal dimensions of these cylinders, internal rust removal and painting are difficult, often resulting in direct scrapping or return to the factory for repair. However, returning to the factory involves long processing times, difficult transportation, high costs, and also affects the normal testing and use of equipment systems.

[0003] Currently, most existing patents cover internal surface treatment technologies for gas cylinders, which involve spraying anti-corrosion coatings onto the inner surface after the gas cylinder is manufactured, thereby improving the cylinder's service life and quality. For gas cylinders found to be corroded during routine inspections, ultrasonic rust removal and mechanical rust removal methods are commonly used. Mechanical rust removal devices utilize sandblasting, high-speed rotating steel wire ropes, or grinding and shot blasting to achieve rust removal. After rust removal, the cylinder is cleaned, dried, and then an inner wall coating is applied for protection. However, these internal surface treatment technologies target the entire inner wall of the gas cylinder and cannot precisely treat and protect the specific locations where rust has occurred. Summary of the Invention

[0004] The technical problem to be solved by this invention is to address the shortcomings of the prior art by providing a high-pressure seamless gas cylinder inner wall visual spraying mechanism. By sequentially connecting the support structure, visual structure, and spraying structure within the elongated shell, the area of ​​the high-pressure seamless gas cylinder inner wall that needs rust removal can be sprayed with paint for protection, enabling daily rapid inspection and repair of small-diameter pressure vessels. Furthermore, the entire mechanism is elongated, allowing for localized painting inside the gas cylinder. The various modules of the mechanism are connected and replaced via quick connectors, and the weight of each module meets portability requirements.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a high-pressure seamless gas cylinder inner wall visual spraying mechanism, characterized in that:

[0006] It includes a long strip-shaped shell and a support structure, a visual structure, and a spraying structure connected sequentially from back to front within the long strip-shaped shell. The support structure and the visual structure, as well as the spraying structure and the visual structure, are connected by quick connectors.

[0007] The elongated housing includes a support structure housing, a visual structure housing, and a spraying structure housing connected sequentially from back to front. The support structure housing and the visual structure housing, as well as the spraying structure housing and the visual structure housing, are connected by quick connectors.

[0008] The support structure includes an electric push rod and a crank-connecting rod assembly, both of which are disposed within the housing of the support structure. The electric push rod and the crank-connecting rod assembly are connected by a crank stop.

[0009] The crank-connecting rod assembly includes three crank-connecting rod units, which are evenly arranged along the circumference of the support structure housing, and the three crank-connecting rod units have the same structure.

[0010] The visual structure includes a visual servo motor and an endoscope probe, both of which are housed within the visual structure housing. The visual servo motor and the endoscope probe are connected by a swing connection assembly.

[0011] The spraying structure includes a spraying servo motor and a spraying component disposed within the spraying structure housing, and the spraying servo motor and the spraying component are connected by a spraying connection component.

[0012] The above-mentioned high-pressure seamless gas cylinder inner wall visual spraying mechanism is characterized in that: the end of the electric push rod away from the crank connecting rod assembly is connected to the support structure housing through an electric push rod stop, and the electric push rod stop is fixed to the support structure housing by screws.

[0013] The aforementioned high-pressure seamless gas cylinder inner wall visual spraying mechanism is characterized in that: the crank-connecting rod assembly is arranged at the end of the electric push rod core away from the electric push rod stop; one end of the crank-connecting rod assembly is hinged to the crank stop; the other end of the crank-connecting rod assembly is hinged to the connecting rod stop; the connecting rod stop is fixed in the support structure housing by screws; each crank-connecting rod unit includes a crank hinged to the crank stop and a connecting rod rotatably connected to the crank; the end of the connecting rod away from the crank is hinged to the connecting rod stop.

[0014] The above-mentioned high-pressure seamless gas cylinder inner wall visual spraying mechanism is characterized in that: three support holes are opened on the outer side of the support structure shell for the crank connecting rod unit to open.

[0015] The above-mentioned high-pressure seamless gas cylinder inner wall visual spraying mechanism is characterized in that: the visual servo motor is mounted on the first motor fixing block by screws, and the first motor fixing block is mounted in the visual structure housing by screws.

[0016] The aforementioned high-pressure seamless gas cylinder inner wall visualization spraying mechanism is characterized in that: the swing connection assembly includes a vision drive shaft passing through the vision structure housing, a first bevel gear transmission unit disposed on the output shaft of the vision servo motor and connected to the vision drive shaft, and a vision execution platform connected to the vision drive shaft; the end of the vision drive shaft passes through the vision structure housing; the first bevel gear transmission unit includes a first driving bevel gear disposed on the output shaft of the vision servo motor and a first driven bevel gear disposed on the vision drive shaft and meshing with the first driving bevel gear; the vision execution platform is mounted on the vision drive shaft, and the endoscope probe is mounted on the end of the vision execution platform away from the vision drive shaft; the vision execution platform includes an L-shaped connector connected to the vision drive shaft and a mounting platform connected to the L-shaped connector and used for mounting the endoscope probe, the L-shaped connector and the mounting platform being integrally formed; a viewing hole is provided on the outer side of the vision structure housing.

[0017] The above-mentioned high-pressure seamless gas cylinder inner wall visual spraying mechanism is characterized in that: the spraying servo motor is mounted on the second motor fixing block by screws, and the second motor fixing block is mounted in the spraying structure housing by screws.

[0018] The aforementioned high-pressure seamless gas cylinder inner wall visualization spraying mechanism is characterized in that: the spraying connection assembly includes a spraying drive shaft passing through the spraying structure housing, a second bevel gear transmission unit disposed on the output shaft of the spraying servo motor and connected to the spraying drive shaft, and a spraying execution platform connected to the spraying drive shaft; the end of the spraying drive shaft passes through the spraying structure housing; the second bevel gear transmission unit includes a second driving bevel gear disposed on the output shaft of the spraying servo motor and a second driven bevel gear disposed on the spraying drive shaft and meshing with the second driving bevel gear; the spraying execution platform is mounted on the spraying drive shaft, and the spraying execution platform has an L-shaped structure; the spraying assembly is mounted on the end of the spraying execution platform away from the spraying drive shaft; spraying holes are opened on the outer surface of the spraying structure housing.

[0019] The above-mentioned high-pressure seamless gas cylinder inner wall visualization spraying mechanism is characterized in that: the spraying component includes a spray pipe connected to the spraying execution platform and a nozzle disposed at the end of the spray pipe, the spray pipe and the spraying execution platform are connected by a PU straight connector, and the spray pipe and the nozzle are connected by a quick-connect connector.

[0020] This invention also provides a method for spraying the inner wall of a high-pressure seamless gas cylinder using a high-pressure seamless gas cylinder visual spraying mechanism, characterized in that the method includes the following steps:

[0021] Step 1: Secure the high-pressure seamless gas cylinder: Place the high-pressure seamless gas cylinder horizontally on the V-shaped bracket and secure it. After securing it, clean the inner wall of the high-pressure seamless gas cylinder to remove rust.

[0022] Step 2: Determine the area to be sprayed: Insert the visual spraying mechanism into the high-pressure seamless gas cylinder, start the visual servo motor, the visual servo motor drives the first bevel gear transmission unit to rotate, so that the visual transmission shaft also rotates. The visual execution platform installed on the visual transmission shaft swings under the drive of the transmission shaft, and the endoscope probe installed on the visual execution platform also swings under the drive of the visual execution platform to observe the inner wall of the high-pressure seamless gas cylinder and determine the area to be sprayed.

[0023] Step 3, Support the visual spraying mechanism: Start the electric push rod, which pushes the crank stop block to move linearly, thereby driving the crank connecting rod unit connected to the crank stop block to move, so that the connection between the crank and the connecting rod opens and extends out of the support hole until the connection between the crank and the connecting rod abuts against the inside of the high-pressure seamless gas cylinder, and the thrust of the electric push rod is maintained.

[0024] Step 4: Spray the area to be sprayed, as follows:

[0025] Step 401: Start the spraying servo motor. The spraying servo motor drives the second bevel gear transmission unit to rotate, which causes the spraying transmission shaft to rotate as well. The spraying execution platform installed on the spraying transmission shaft swings under the drive of the spraying transmission shaft, which in turn causes the spraying assembly to swing, so that the nozzle is aligned with the area to be sprayed.

[0026] Step 402: Start the spray head to spray the area to be sprayed evenly, and turn off the spray head after spraying is complete;

[0027] Step 5, Retracting the support structure: Start the electric push rod in the opposite direction. The electric push rod pulls the crank stop block to move linearly, thereby driving the crank-connecting rod unit connected to the crank stop block to move, so that the connection between the crank and the connecting rod retracts from the support hole until the central axis of the crank and the central axis of the connecting rod are on the same horizontal line. Then, turn off the electric push rod.

[0028] Step 6: Spray the remaining areas to be sprayed: Repeat steps 2 to 5 to spray the remaining areas to be sprayed in sequence until all areas to be sprayed are completely sprayed.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] 1. This invention, through a support structure, a visual structure, and a spraying structure sequentially connected within the elongated shell, can spray paint to protect the areas of the inner wall of a high-pressure seamless gas cylinder that require rust removal, enabling rapid daily inspection and repair of small-diameter pressure vessels; moreover, the entire mechanism is elongated, allowing for localized painting inside the gas cylinder; the modules of the mechanism are connected and replaced via quick connectors, and the weight of each module meets portability requirements.

[0031] 2. In this invention, the support structure supports the entire spraying mechanism through the crank-connecting rod assembly. When the entire mechanism passes through a narrow diameter, the crank-connecting rod unit is folded inside the housing. After entering the gas cylinder, the crank-connecting rod unit opens from inside the housing, fixing the mechanism inside the gas cylinder. That is, the crank-connecting rod unit can be embedded into the housing in the folded state and can also improve the support strength of the spraying mechanism when it is working.

[0032] 3. This invention utilizes a visual structure to perform visual inspection of the inner wall of the gas cylinder, quickly and accurately determining the rust removal area. After the rust removal process is completed, the spraying structure performs the painting process, realizing the inspection and treatment of the inner surface of small-diameter gas cylinders.

[0033] 4. This invention first determines the area to be sprayed on the inner wall of the high-pressure seamless gas cylinder through a visual structure, then uses a support structure to fix the position of the visual spraying mechanism on the inner wall of the high-pressure seamless gas cylinder, and finally sprays the area to be sprayed through the spraying structure, realizing the linkage and cooperation between the three modules to complete the daily rapid inspection and repair of the inner wall of the high-pressure seamless gas cylinder.

[0034] In summary, this invention, through a support structure, a visual structure, and a spraying structure sequentially connected within the elongated shell, enables the spraying protection of rust-removing areas on the inner wall of a high-pressure seamless gas cylinder, achieving rapid daily inspection and repair of small-diameter pressure vessels. Furthermore, the elongated shape of the entire mechanism allows for localized painting inside the gas cylinder. The various modules are connected and replaceable via quick-connect couplings, and the weight of each module meets portability requirements. First, the visual structure determines the area to be painted on the inner wall of the high-pressure seamless gas cylinder. Then, the support structure fixes the position of the visual spraying mechanism on the inner wall of the high-pressure seamless gas cylinder. Finally, the spraying structure sprays the area to be painted, achieving coordinated operation between the three modules to complete rapid daily inspection and repair of the inner wall of the high-pressure seamless gas cylinder.

[0035] 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

[0036] Figure 1 This is a schematic diagram of the structure of the present invention.

[0037] Figure 2This is a schematic diagram showing the connection relationship between the support structure and the shell of the support structure in this invention.

[0038] Figure 3 This is a schematic diagram of the open state of the support structure of the present invention.

[0039] Figure 4 This is a schematic diagram showing the connection relationship between the visual structure shell and the visual structure of the present invention.

[0040] Figure 5 This is a schematic diagram showing the connection relationship between the shell and the spraying structure of the present invention.

[0041] Figure 6 This is a schematic diagram of the spraying structure of the present invention.

[0042] Figure 7 This is a flowchart of the method of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1—Supporting structure; 2—Visual structure; 3—Painting structure;

[0045] 4—Support structure housing; 5—Electric actuator stop; 6—Electric actuator;

[0046] 7—Crank stop block; 8—First crank; 9—Second crank;

[0047] 10—Third crank; 11—First connecting rod; 12—Second connecting rod;

[0048] 13—Third link; 14—Link stop; 15—Visual structure housing;

[0049] 16—Vision servo motor; 17—First motor mounting block; 18—First drive bevel gear;

[0050] 19—First driven bevel gear; 20—Vision drive shaft; 21—Vision execution platform;

[0051] 22—Endoscope probe; 23—Spray coating structure housing; 24—Spray coating servo motor;

[0052] 25—Second motor mounting block; 26—Second driving bevel gear; 27—Second driven bevel gear;

[0053] 28—Spraying drive shaft; 29—Spraying execution platform; 30—PU straight connector;

[0054] 31—Spray nozzle; 32—Quick connector; 33—Spray head. Detailed Implementation

[0055] like Figures 1 to 6The high-pressure seamless gas cylinder inner wall visualization spraying mechanism shown includes a long strip shell and a support structure 1, a visual structure 2, and a spraying structure 3 connected sequentially from back to front within the long strip shell. The support structure 1 and the visual structure 2, as well as the spraying structure 3 and the visual structure 2, are connected by quick connectors.

[0056] The elongated shell includes a support structure shell 4, a visual structure shell 15, and a spraying structure shell 23 connected sequentially from back to front. The support structure shell 4 and the visual structure shell 15, as well as the spraying structure shell 23 and the visual structure shell 15, are connected by quick connectors.

[0057] The support structure 1 includes an electric push rod 6 and a crank connecting rod assembly, both of which are disposed within the support structure housing 4. The electric push rod 6 and the crank connecting rod assembly are connected by a crank stop block 7.

[0058] The crank-connecting rod assembly includes three crank-connecting rod units, which are evenly arranged along the circumference of the support structure housing 4, and the three crank-connecting rod units have the same structure.

[0059] The visual structure 2 includes a visual servo motor 16 and an endoscope probe 22, both of which are disposed within the visual structure housing 15. The visual servo motor 16 and the endoscope probe 22 are connected by a swing connection assembly.

[0060] The spraying structure 3 includes a spraying servo motor 24 and a spraying component disposed within the spraying structure housing 23. The spraying servo motor 24 and the spraying component are connected by a spraying connection component.

[0061] This invention, through a support structure 1, a visual structure 2, and a spraying structure 3 sequentially connected within the elongated shell, can spray paint to protect the areas of the inner wall of a high-pressure seamless gas cylinder that require rust removal, enabling rapid daily inspection and repair of small-diameter pressure vessels. Furthermore, the entire mechanism is elongated, allowing for localized painting inside the gas cylinder. The various modules of the mechanism are connected and replaced via quick connectors, and the weight of each module meets portability requirements.

[0062] In this invention, the support structure 1 supports the entire spraying mechanism through the crank-connecting rod assembly. When the entire mechanism passes through a narrow diameter, the crank-connecting rod unit is folded inside the housing. After entering the gas cylinder, the crank-connecting rod unit opens from inside the housing, fixing the mechanism inside the gas cylinder. In other words, the crank-connecting rod unit can be embedded into the housing in the folded state and can also improve the support strength of the spraying mechanism during operation.

[0063] This invention utilizes the visual structure 2 to perform visual inspection of the inner wall of the gas cylinder, quickly and accurately determining the rust removal area. After the rust removal process is completed, the spraying structure 3 performs the painting process, realizing the inspection and treatment of the inner surface of the small-diameter gas cylinder.

[0064] It should be noted that the support structure 1 and the vision structure 2, as well as the spraying structure 3 and the vision structure 2, are connected by quick connectors, allowing for quick installation and disassembly of each module. After the area to be rusted is determined by the vision structure 2, a rust removal device can be installed at the front of the vision structure 2 to remove rust. After the rust removal is completed, the spraying structure 3 is used for spraying.

[0065] In particular, the electric actuator 6, the vision servo motor 16, and the spraying servo motor 24 can all be controlled by a PLC to achieve automated control.

[0066] In this embodiment, the end of the electric push rod 6 away from the crank connecting rod assembly is connected to the support structure housing 4 through the electric push rod stop 5, and the electric push rod stop 5 is fixed to the support structure housing 4 by screws.

[0067] like Figure 2 As shown, the electric push rod 6 and the electric push rod stop 5 are also connected by screws.

[0068] In this embodiment, the crank-connecting rod assembly is disposed at the end of the electric push rod 6 away from the electric push rod stop 5. One end of the crank-connecting rod assembly is hinged to the crank stop 7, and the other end of the crank-connecting rod assembly is hinged to the connecting rod stop 14. The connecting rod stop 14 is fixed in the support structure housing 4 by screws. Each crank-connecting rod unit includes a crank hinged to the crank stop 7 and a connecting rod rotatably connected to the crank. The end of the connecting rod away from the crank is hinged to the connecting rod stop 14.

[0069] like Figure 2 and Figure 3 As shown, the crank includes a first crank 8, a second crank 9, and a third crank 10; the connecting rod includes a first connecting rod 11 connected to the first crank 8, a second connecting rod 12 connected to the second crank 9, and a third connecting rod 13 connected to the third crank 10; the support structure 1 uses a connecting rod and hinge structure to design the legs, which are evenly distributed around the mechanism, and the folding and unfolding actions of the legs are realized by an electric push rod. The core of the electric push rod 6 moves linearly relative to the extension direction of the support structure housing 4. When the electric push rod 6 moves inside the support structure housing 4, the crank stop 7 moves together with the electric push rod 6, and the crank opens around the perimeter until the end of the crank contacts the inner wall of the gas cylinder, achieving the purpose of fixed support.

[0070] In this embodiment, three support holes are provided on the outer side of the support structure housing 4 for the crank connecting rod unit to open.

[0071] In this embodiment, the visual servo motor 16 is mounted on the first motor fixing block 17 by screws, and the first motor fixing block 17 is mounted inside the visual structure housing 15 by screws.

[0072] In this embodiment, the swing connection assembly includes a visual drive shaft 20 passing through the visual structure housing 15, a first bevel gear transmission unit disposed on the output shaft of the visual servo motor 16 and connected to the visual drive shaft 20, and a visual execution platform 21 connected to the visual drive shaft 20; the end of the visual drive shaft 20 passes through the visual structure housing 15; the first bevel gear transmission unit includes a first driving bevel gear 18 disposed on the output shaft of the visual servo motor 16 and a first driven bevel gear 19 disposed on the visual drive shaft 20 and meshing with the first driving bevel gear 18; the visual execution platform 21 is mounted on the visual drive shaft 20, and the endoscope probe 22 is mounted on the end of the visual execution platform 21 away from the visual drive shaft 20; the visual execution platform 21 includes an L-shaped connector connected to the visual drive shaft 20 and a mounting platform connected to the L-shaped connector and used for mounting the endoscope probe 22, the L-shaped connector and the mounting platform being integrally formed; a viewing hole is provided on the outer side of the visual structure housing 15.

[0073] like Figure 4 As shown, when the visual servo motor 16 rotates, the first active bevel gear 18 rotates accordingly; then the first driven bevel gear 19 rotates along with the first active bevel gear 18; driven by the first driven bevel gear 19, the visual transmission shaft 20 rotates accordingly, and the visual execution platform 21 connected to the visual transmission shaft 20 also rotates accordingly, driving the endoscope probe 22 to swing, so as to achieve the purpose of observing the overall condition of the inner wall.

[0074] In this embodiment, the spraying servo motor 24 is mounted on the second motor fixing block 25 by screws, and the second motor fixing block 25 is mounted inside the spraying structure housing 23 by screws.

[0075] In this embodiment, the spraying connection assembly includes a spraying drive shaft 28 passing through the spraying structure housing 23, a second bevel gear transmission unit disposed on the output shaft of the spraying servo motor 24 and connected to the spraying drive shaft 28, and a spraying execution platform 29 connected to the spraying drive shaft 28; the end of the spraying drive shaft 28 passes through the spraying structure housing 23; the second bevel gear transmission unit includes a second driving bevel gear 26 disposed on the output shaft of the spraying servo motor 24 and a second driven bevel gear 27 disposed on the spraying drive shaft 28 and meshing with the second driving bevel gear 26; the spraying execution platform 29 is mounted on the spraying drive shaft 28 and has an L-shaped structure; the spraying assembly is mounted on the end of the spraying execution platform 29 away from the spraying drive shaft 28; spraying holes are provided on the outer surface of the spraying structure housing 23.

[0076] like Figure 5 As shown, when the spraying servo motor 24 rotates, the second driving bevel gear 26 rotates with the motor output shaft, and the second driven bevel gear 27 rotates through meshing; the spraying transmission shaft 28 where the second driven bevel gear 27 is located rotates accordingly, and the spraying execution platform 29 rotates with the spraying transmission shaft 28, driving the spray pipe 31 and the nozzle 33 to reach the rust removal area for spraying.

[0077] In this embodiment, the spraying assembly includes a spray pipe 31 connected to the spraying execution platform 29 and a nozzle 33 disposed at the end of the spray pipe 31. The spray pipe 31 and the spraying execution platform 29 are connected by a PU straight connector 30, and the spray pipe 31 and the nozzle 33 are connected by a quick connector 32.

[0078] In actual use, the spraying assembly is connected to the spray gun device outside the gas cylinder via a high-pressure hose. When spraying the area to be sprayed, the spray gun switch outside the gas cylinder needs to be turned on. The first motor fixing block 17, the second motor fixing block 25, and the electric push rod stop block 5 are all provided with slots for pipelines to pass through. The quick-connect connector 32 can be a PCF quick-connect connector for gas pipes.

[0079] like Figures 1 to 7 The method for spraying the inner wall of a high-pressure seamless gas cylinder using a visual spraying mechanism is characterized by comprising the following steps:

[0080] Step 1: Secure the high-pressure seamless gas cylinder: Place the high-pressure seamless gas cylinder horizontally on the V-shaped bracket and secure it. After securing it, clean the inner wall of the high-pressure seamless gas cylinder to remove rust.

[0081] Step 2: Determine the area to be sprayed: Insert the visual spraying mechanism into the high-pressure seamless gas cylinder, start the visual servo motor 16, the visual servo motor 16 drives the first bevel gear transmission unit to rotate, so that the visual transmission shaft 20 also rotates. The visual execution platform 21 installed on the visual transmission shaft 20 swings under the drive of the transmission shaft 20. The endoscope probe 22 installed on the visual execution platform 21 also swings under the drive of the visual execution platform 21 to observe the inner wall of the high-pressure seamless gas cylinder and determine the area to be sprayed.

[0082] Step 3, Support the visual spraying mechanism: Start the electric push rod 6. The electric push rod 6 pushes the crank stop 7 to move linearly, thereby driving the crank connecting rod unit connected to the crank stop 7 to move, so that the connection between the crank and the connecting rod opens and extends out of the support hole until the connection between the crank and the connecting rod abuts against the inside of the high-pressure seamless gas cylinder. The thrust of the electric push rod 6 is maintained.

[0083] Step 4: Spray the area to be sprayed, as follows:

[0084] Step 401: Start the spraying servo motor 24. The spraying servo motor 24 drives the second bevel gear transmission unit to rotate, which causes the spraying transmission shaft 28 to rotate as well. The spraying execution platform 29 installed on the spraying transmission shaft 28 swings under the drive of the spraying transmission shaft 28, which drives the spraying assembly to swing, so that the nozzle 33 is aligned with the area to be sprayed.

[0085] Step 402: Start the spray head 33 to spray the area to be sprayed evenly, and turn off the spray head 33 after the spraying is completed;

[0086] Step 5, Retracting the support structure: Start the electric push rod 6 in the opposite direction. The electric push rod 6 pulls the crank stop 7 to move linearly, thereby driving the crank connecting rod unit connected to the crank stop 7 to move, so that the connection between the crank and the connecting rod retracts from the support hole until the central axis of the crank and the central axis of the connecting rod are on the same horizontal line. Then, turn off the electric push rod 6.

[0087] Step 6: Spray the remaining areas to be sprayed: Repeat steps 2 to 5 to spray the remaining areas to be sprayed in sequence until all areas to be sprayed are completely sprayed.

[0088] This invention first uses a visual structure 2 to determine the area to be sprayed on the inner wall of a high-pressure seamless gas cylinder. Then, a support structure 1 is used to fix the position of the visual spraying mechanism on the inner wall of the high-pressure seamless gas cylinder. Finally, the spraying structure 3 sprays the area to be sprayed, realizing the linkage and cooperation between the three modules to complete the daily rapid inspection and repair of the inner wall of the high-pressure seamless gas cylinder.

[0089] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A high-pressure seamless gas cylinder inner wall visual spraying mechanism, characterized in that: It includes a long strip shell and a support structure (1), a vision structure (2), and a spraying structure (3) connected sequentially from back to front within the long strip shell. The support structure (1) and the vision structure (2), as well as the spraying structure (3) and the vision structure (2), are connected by quick connectors. The elongated shell includes a support structure shell (4), a visual structure shell (15), and a spraying structure shell (23) connected sequentially from back to front. The support structure shell (4) and the visual structure shell (15), as well as the spraying structure shell (23) and the visual structure shell (15), are connected by quick connectors. The support structure (1) includes an electric push rod (6) and a crank connecting rod assembly, both of which are disposed in the support structure housing (4). The electric push rod (6) and the crank connecting rod assembly are connected by a crank stop (7). The crank-connecting rod assembly includes three crank-connecting rod units, which are evenly arranged along the circumference of the support structure housing (4). The three crank-connecting rod units have the same structure. Three support holes are provided on the outer side of the support structure housing (4) for the crank-connecting rod units to open. The electric push rod (6) pushes the crank stop (7) to open the connection between the crank and the connecting rod and extend it out of the support holes until the connection between the crank and the connecting rod abuts against the inside of the high-pressure seamless gas cylinder. The visual structure (2) includes a visual servo motor (16) and an endoscope probe (22) both disposed within the visual structure housing (15). The visual servo motor (16) and the endoscope probe (22) are connected by a swing connection assembly. A viewing hole is provided on the outer side of the visual structure housing (15). The visual servo motor (16) drives the endoscope probe (22) to swing in the viewing hole to observe the inner wall of the high-pressure seamless gas cylinder and determine the area to be sprayed. The spraying structure (3) includes a spraying servo motor (24) and a spraying component disposed in the spraying structure housing (23). The spraying servo motor (24) and the spraying component are connected by a spraying connection component. A spraying hole is provided on the outer side of the spraying structure housing (23). The spraying servo motor (24) drives the spraying component to swing in the spraying hole, so that the nozzle (33) at the end of the spraying component is aligned with the area to be sprayed for spraying.

2. The high-pressure seamless gas cylinder inner wall visual spraying mechanism according to claim 1, characterized in that: The end of the electric push rod (6) away from the crank connecting rod assembly is connected to the support structure housing (4) through the electric push rod stop (5), and the electric push rod stop (5) is fixed to the support structure housing (4) by screws.

3. The high-pressure seamless gas cylinder inner wall visual spraying mechanism according to claim 2, characterized in that: The crank-connecting rod assembly is located at the end of the electric push rod (6) away from the electric push rod stop (5). One end of the crank-connecting rod assembly is hinged to the crank stop (7), and the other end of the crank-connecting rod assembly is hinged to the connecting rod stop (14). The connecting rod stop (14) is fixed in the support structure housing (4) by screws. Each crank-connecting rod unit includes a crank hinged to the crank stop (7) and a connecting rod rotatably connected to the crank. The end of the connecting rod away from the crank is hinged to the connecting rod stop (14).

4. The high-pressure seamless gas cylinder inner wall visual spraying mechanism according to claim 2, characterized in that: The visual servo motor (16) is mounted on the first motor fixing block (17) by screws, and the first motor fixing block (17) is mounted in the visual structure housing (15) by screws.

5. A high-pressure seamless gas cylinder inner wall visual spraying mechanism according to claim 4, characterized in that: The swing connection assembly includes a vision drive shaft (20) passing through the vision structure housing (15), a first bevel gear transmission unit disposed on the output shaft of the vision servo motor (16) and connected to the vision drive shaft (20), and a vision execution platform (21) connected to the vision drive shaft (20); the end of the vision drive shaft (20) passes through the vision structure housing (15); the first bevel gear transmission unit includes a first drive bevel gear (18) disposed on the output shaft of the vision servo motor (16) and a vision execution platform (21) disposed on the vision drive shaft (20). A first driven bevel gear (19) is mounted on the visual drive shaft (20) and meshes with a first active bevel gear (18); the visual execution platform (21) is mounted on the visual drive shaft (20), and the endoscope probe (22) is mounted on the end of the visual execution platform (21) away from the visual drive shaft (20); the visual execution platform (21) includes an L-shaped connector connected to the visual drive shaft (20) and a mounting platform connected to the L-shaped connector and used for mounting the endoscope probe (22), the L-shaped connector and the mounting platform being integrally formed.

6. The high-pressure seamless gas cylinder inner wall visual spraying mechanism according to claim 5, characterized in that: The spraying servo motor (24) is mounted on the second motor fixing block (25) by screws, and the second motor fixing block (25) is mounted inside the spraying structure housing (23) by screws.

7. A high-pressure seamless gas cylinder inner wall visual spraying mechanism according to claim 6, characterized in that: The spraying connection assembly includes a spraying drive shaft (28) passing through the spraying structure housing (23), a second bevel gear transmission unit disposed on the output shaft of the spraying servo motor (24) and connected to the spraying drive shaft (28), and a spraying execution platform (29) connected to the spraying drive shaft (28); the end of the spraying drive shaft (28) passes through the spraying structure housing (23); the second bevel gear transmission unit includes a second driving bevel gear (26) disposed on the output shaft of the spraying servo motor (24) and a second driven bevel gear (27) disposed on the spraying drive shaft (28) and meshing with the second driving bevel gear (26); the spraying execution platform (29) is mounted on the spraying drive shaft (28) and the spraying execution platform (29) has an L-shaped structure; the spraying assembly is mounted on the end of the spraying execution platform (29) away from the spraying drive shaft (28).

8. A high-pressure seamless gas cylinder inner wall visual spraying mechanism according to claim 7, characterized in that: The spraying assembly includes a spray pipe (31) connected to the spraying execution platform (29) and a nozzle (33) disposed at the end of the spray pipe (31). The spray pipe (31) and the spraying execution platform (29) are connected by a PU straight connector (30), and the spray pipe (31) and the nozzle (33) are connected by a quick connector (32).

9. The method for spraying the inner wall of a high-pressure seamless gas cylinder using a high-pressure seamless gas cylinder visual spraying mechanism according to claim 8, characterized in that, The method includes the following steps: Step 1: Secure the high-pressure seamless gas cylinder: Place the high-pressure seamless gas cylinder horizontally on the V-shaped bracket and secure it. After securing it, clean the inner wall of the high-pressure seamless gas cylinder to remove rust. Step 2: Determine the area to be sprayed: Insert the visual spraying mechanism into the high-pressure seamless gas cylinder, start the visual servo motor (16), the visual servo motor (16) drives the first bevel gear transmission unit to rotate, so that the visual transmission shaft (20) also rotates. The visual execution platform (21) installed on the visual transmission shaft (20) swings under the drive of the transmission shaft (20), and the endoscope probe (22) installed on the visual execution platform (21) also swings under the drive of the visual execution platform (21) to observe the inner wall of the high-pressure seamless gas cylinder and determine the area to be sprayed. Step 3, Support the visual spraying mechanism: Start the electric push rod (6), the electric push rod (6) pushes the crank stop (7) to move linearly, thereby driving the crank connecting rod unit connected to the crank stop (7) to move, so that the connection between the crank and the connecting rod opens and extends out from the support hole until the connection between the crank and the connecting rod abuts against the inside of the high-pressure seamless gas cylinder, and the thrust of the electric push rod (6) is maintained; Step 4: Spray the area to be sprayed, as follows: Step 401: Start the spraying servo motor (24). The spraying servo motor (24) drives the second bevel gear transmission unit to rotate, causing the spraying transmission shaft (28) to rotate as well. The spraying execution platform (29) mounted on the spraying transmission shaft (28) swings under the drive of the spraying transmission shaft (28), causing the spraying assembly to swing, so that the nozzle (33) is aligned with the area to be sprayed. Step 402: Start the nozzle (33) to spray the area to be sprayed evenly, and turn off the nozzle (33) after the spraying is completed. Step 5, Retracting the support structure: Start the electric push rod (6) in the opposite direction. The electric push rod (6) pulls the crank stop (7) to move linearly, thereby driving the crank connecting rod unit connected to the crank stop (7) to move, so that the connection between the crank and the connecting rod retracts from the support hole until the central axis of the crank and the central axis of the connecting rod are on the same horizontal line. Then, turn off the electric push rod (6). Step 6: Spray the remaining areas to be sprayed: Repeat steps 2 to 5 to spray the remaining areas to be sprayed in sequence until all areas to be sprayed are completely sprayed.

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