An ultra-long steel pipe liquid epoxy airless synchronous spraying device

Abstract

The application discloses a kind of super-long steel pipe liquid epoxy gasless synchronous spraying device, it is related to synchronous spraying device technical field, including main structure, it includes fixed rail plate and fixedly connected in the load-bearing bar of fixed rail plate upper surface, the T-shaped sliding slot is set in the both sides of fixed rail plate;The application utilizes bearing plate, makes link rod second auxiliary wheel fixedly connected in the lower surface of storage frame, and then makes second auxiliary wheel to steel pipe body stable auxiliary processing, so that steel pipe body is supported in the process of moving, when the size of steel pipe body changes, adjusting disc can be quickly rotated to make adjusting screw rod rotate, and then when steel pipe body is completed, using third electric push rod and fourth electric push rod and second rubber plate are cooperated, so that steel pipe body is pushed out from the annular structure formed by storage frame on one side in the process of unloading.

Description

Technical Field

[0001] This invention relates to the field of synchronous spraying equipment technology, and in particular to a synchronous spraying device for liquid epoxy on ultra-long steel pipes. Background Technology

[0002] Liquid epoxy coatings are widely used for anti-corrosion coating of the inner and outer walls of steel pipelines due to their excellent adhesion, corrosion resistance and mechanical strength. In the fields of oil, natural gas, municipal water supply and chemical transportation, the anti-corrosion treatment of ultra-long steel pipes is a key process to ensure the long-term safe operation of pipelines. Among them, airless spraying technology uses a high-pressure pump to pressurize the coating to a high pressure and then atomizes it through a nozzle to form a high-speed fan-shaped jet to coat the surface of the workpiece. It has the advantages of thick coating, no rebound and scattering caused by compressed air, thick film in one pass and high production efficiency, and has become the mainstream process for steel pipe coating.

[0003] In terms of simultaneous internal and external wall spraying, traditional processes typically spray the outer wall of the steel pipe first, and then spray the inner wall after the coating has cured, or vice versa. This step-by-step operation not only prolongs the production cycle, but also makes it easy for the steel pipe surface to be contaminated during the waiting time between the two sprayings, affecting the coating adhesion. For ultra-long steel pipes, the internal wall spraying operation is particularly difficult, requiring the long spray bar to be extended into the pipe. The flexible deformation of the spray bar can easily cause the spray gun to deviate from the center, resulting in uneven coating thickness on the inner wall, or even missed spraying. Some improved solutions use a self-propelled internal wall spraying carriage, but the contact between the carriage's drive wheels and the inner wall of the pipe will damage the uncured wet film, and it is difficult to achieve simultaneous curing of the internal and external coatings. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the current liquid epoxy airless synchronous spraying device for ultra-long steel pipes, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a liquid epoxy airless synchronous spraying device for ultra-long steel pipes, which is suitable for solving the problem that the waiting time between two sprayings can easily cause the steel pipe surface to be contaminated, affecting the coating adhesion, and the inner wall spraying operation is particularly difficult for ultra-long steel pipes.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a liquid epoxy airless synchronous spraying device for ultra-long steel pipes, the synchronous spraying device comprising: The main structure includes a fixed rail plate and a load-bearing rod fixedly connected to the upper surface of the fixed rail plate. T-shaped grooves are provided on both sides of the fixed rail plate. The clamping and feeding structure includes a T-shaped block slidably connected to the inner surface of the T-shaped groove and a fixed frame fixedly connected to the upper surface of the load-bearing rod. A first electric push rod is fixedly connected to the upper surface of the fixed rail plate. A sliding groove is opened in the fixed rail plate, and a moving plate is slidably connected to the inner surface of the sliding groove. The spraying linkage structure includes a slider slidably connected to the inner surface of the fixed rail plate and a storage frame fixedly connected to the upper surface of the slider. An insertion rod is slidably connected to one side of the storage frame, a spraying frame is fixedly connected to one side of the storage frame, and a connecting rod is fixedly connected to the lower surface of the storage frame.

[0008] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, wherein: a connecting frame is fixedly connected to one side of the T-shaped block, a fixing plate is fixedly connected to the upper surface of the connecting frame, there are two sets of connecting frames, and both sets of connecting frames are symmetrical about the center of the fixing rail plate, and the number of connecting frames is adapted to the number of T-shaped blocks.

[0009] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, the first electric push rod is fixedly connected to a connecting plate on its upper surface, the connecting plate is fixedly connected to a connecting rod on its upper surface, a load-bearing wheel is rotatably connected to the outer surface of the connecting rod, the steel pipe body is rolledly connected to the outer surface of the load-bearing wheel, and a drive motor is fixedly connected to one side of the fixed rail plate.

[0010] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, wherein: a lead screw is fixedly connected to one end of the output shaft of the drive motor, a guide rod is fixedly connected to the inner surface of another set of T-shaped sliding grooves, the inner surface of one set of T-shaped blocks is slidably connected to the outer surface of the guide rod, a protective frame is fixedly connected to one side of the fixed rail plate, a limit guide plate is fixedly connected to the inner surface of the sliding groove, a push plate is fixedly connected to one end of the moving plate, and the outer surface of the moving plate is slidably connected to the lower surface of the limit guide plate.

[0011] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, the following features are provided: a support rod is fixedly connected to the upper surface of the push plate; the outer surface of the push plate is slidably connected to the inner surface of the protective frame; an mounting plate is fixedly connected to one side of the support rod; triangular blocks are fixedly connected to both sides of the support rod; one side of the triangular block is fixedly connected to one side of the mounting plate; a second electric push rod is fixedly connected to one side of the connecting frame; an extrusion plate is fixedly connected to one end of the second electric push rod; and a first rubber plate is fixedly connected to the end of the extrusion plate away from the second electric push rod.

[0012] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, wherein: a second electric push rod is also fixedly connected to one side of the mounting plate; symmetrically distributed mounting rods are fixedly connected to the inner surface of the fixing frame; a mounting ring is fixedly connected to the outer surface of the mounting rod; a first support plate is fixedly connected to the outer surface of the mounting ring; a first auxiliary wheel is rotatably connected to the side of the first support plate away from the mounting ring; and a first liquid inlet pipe is fixedly connected to the inner surface of the mounting rod.

[0013] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, wherein: a bearing plate is fixedly connected to one side of the fixed rail plate, an L-shaped plate is fixedly connected to the upper surface of the bearing plate, a third electric push rod is fixedly connected to one side of the L-shaped plate, a fixing block is fixedly connected to one end of the third electric push rod, a fourth electric push rod is fixedly connected to the inner surface of the fixing block, and a second rubber plate is fixedly connected to one end of the fourth electric push rod.

[0014] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, wherein: a flow pipe is fixedly connected to one side of the storage frame, a second liquid inlet pipe is fixedly connected to one side of the flow pipe, a rotating block is fixedly connected to one side of the storage frame, a threaded block is fixedly connected to one side of the storage frame, an adjusting threaded rod is rotatably connected to the inner surface of the rotating block, and an adjusting threaded rod is threadedly connected to the inner surface of the threaded block.

[0015] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, wherein: an adjusting disc is fixedly connected to the end of the adjusting threaded rod away from the rotating block; a second auxiliary wheel is rotatably connected to one end of the connecting rod; the outer surface of the second auxiliary wheel is fixedly connected to the outer surface of the steel pipe body; a pressure box is fixedly connected to one side of the mounting rod; a liquid flow channel is opened on the inner surface of the pressure box; and a protective box is fixedly connected to the inner surface of the liquid flow channel.

[0016] As a preferred embodiment of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes described in this invention, the device comprises: a uniform speed motor fixedly connected to the inner surface of the protective box; a connecting shaft fixedly connected to one end of the output shaft of the uniform speed motor; an inclined plate fixedly connected to the outer surface of the pressure box; a second support plate fixedly connected to one side of the inclined plate; a third auxiliary wheel rotatably connected to one side of the second support plate; an adjusting plate fixedly connected to one side of the slider; a guide pipe fixedly connected to the outer surface of the connecting shaft; a spray head fixedly connected to one end of the guide pipe; and a side of the guide pipe rotatably connected to one side of the pressure box.

[0017] The beneficial effects of this invention are: 1. By using fixed rail plates, T-shaped slides, connecting frames, fixed plates, steel pipe bodies, and load-bearing rods, the fixed rail plates are used to install the entire equipment. Furthermore, the T-shaped slides are used to assist in the overall movement of the equipment. Further, the connecting frames are moved under the guidance of the T-shaped slides. Finally, the fixed plates are used to fix the connecting frames on both sides, thereby improving the squeezing and moving effect of the equipment to a certain extent. 2. Utilizing a drive motor, T-block, lead screw, push plate, support rod, triangular block, mounting plate, second electric push rod, extrusion plate, and first rubber plate, the output shaft of the drive motor drives the lead screw, which in turn drives the T-block, causing it to move within the T-shaped groove. Simultaneously, the movement of the T-block drives the connecting frame and fixing plate to move synchronously. The second electric push rod then extrudes the first rubber plate towards one side of the steel pipe body. Simultaneously, the first rubber plate on one side of the mounting plate presses against the other side of the steel pipe body. The simultaneous cooperation of the first rubber plates on both sides allows the steel pipe body to move towards the spraying linkage structure under the drive of the drive motor, thus enabling simultaneous spraying of the inner and outer surfaces of the steel pipe to a certain extent. 3. Using the first electric push rod, connecting plate, connecting rod, load-bearing wheel, fixed frame, first support plate, first auxiliary wheel, mounting rod, mounting ring and first liquid inlet pipe, the load-bearing rod is fixed to the lower surface of the fixed frame. When the steel pipe body moves, the pressure box inside the spraying linkage structure is limited to prevent it from moving with the steel pipe body. This allows the steel pipe body to be supported to a certain extent. Furthermore, the height of the load-bearing wheel is adjusted by the first electric push rod, so that the outer surface of the steel pipe body is supported by the load-bearing wheel. This allows the equipment to quickly feed and spray after positioning. 4. Utilizing an inclined connecting plate, a third auxiliary wheel, a spray head, a second support plate, a pressure box, a protective box, a uniform speed motor, a flow channel, a connecting shaft, and a guide pipe, the first inlet pipe pressurizes and injects the coating material into the pressure box, causing it to accumulate in the flow channel. Furthermore, the uniform speed motor drives the connecting shaft to rotate, causing the coating material to flow on the outer surface of the connecting shaft. Simultaneously, one side of the guide pipe is rotatably connected to the other side of the pressure box, connecting the flow channel inside the pressure box with the internal space of the guide pipe. Thus, during the pressurization process by external equipment, the coating material is sprayed onto the inner surface of the steel pipe body through the spray head, thereby improving the processing effect of the equipment to a certain extent. 5. Utilizing a support plate, L-shaped plate, adjusting plate, spraying frame, adjusting disc, adjusting threaded rod, rotating block, insertion rod, threaded block, storage frame, connecting rod, second auxiliary wheel, fixing block, fourth electric push rod, and second rubber plate, the connecting rod fixes the second auxiliary wheel to the lower surface of the storage frame, thereby providing stable support for the steel pipe body. This allows the storage frame to be supported simultaneously during the movement of the steel pipe body. When the size of the steel pipe body changes, the adjusting disc can be quickly rotated to rotate the adjusting threaded rod, which then cooperates with the threaded block to raise one set of storage frames. Simultaneously, the adjusting plate adjusts the position of the lower storage frames, thus improving the adaptability of the equipment. After the steel pipe body is sprayed, the third and fourth electric push rods, along with the second rubber plate, cooperate to push one side of the steel pipe body out of the annular structure formed by the storage frame during unloading. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of a liquid epoxy airless synchronous spraying device for ultra-long steel pipes proposed in this invention. Figure 2 This is a schematic diagram of the distribution structure of the second electric push rod on one side of the mounting plate of the ultra-long steel pipe liquid epoxy airless synchronous spraying device proposed in this invention. Figure 3 This is a schematic diagram of the internal structure of the steel pipe body of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes proposed in this invention. Figure 4 This is a schematic cross-sectional view of the overall structure of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes proposed in this invention. Figure 5 This is a cross-sectional view of the pressure box of the liquid epoxy airless synchronous spraying device for ultra-long steel pipes proposed in this invention. Figure 6 This is a schematic diagram of the mounting rod distribution structure of an ultra-long steel pipe liquid epoxy airless synchronous spraying device proposed in this invention; Figure 7 This is a schematic diagram of the spraying linkage structure of a liquid epoxy airless synchronous spraying device for ultra-long steel pipes proposed in this invention. Figure 8This is a schematic diagram of the uniform speed motor distribution structure of a liquid epoxy airless synchronous spraying device for ultra-long steel pipes proposed in this invention.

[0019] Figure Descriptions: 100. Main structure; 101. Fixed rail plate; 102. T-shaped slide rail; 103. Connecting frame; 104. Fixed plate; 105. Steel pipe body; 106. Load-bearing rod; 200. Clamping and feeding structure; 201. Drive motor; 202. T-block; 203. Lead screw; 204. First electric push rod; 205. Connecting plate; 206. Connecting rod; 207. Load-bearing wheel; 208. Push plate; 209. Support rod; 210. Triangular block; 211. Mounting plate; 212. Second electric push rod; 213. Guide rod; 214. Protective frame; 215. Fixed frame; 216. Extrusion plate; 217. First rubber plate; 218. First support plate; 219. First auxiliary wheel; 220. Mounting rod; 221. Mounting ring; 222. Sliding groove; 223. Limiting guide plate; 224. 1. First liquid inlet pipe; 2.25. Moving plate; 3.00. Spraying linkage structure; 3.01. Support plate; 3.02. L-shaped plate; 3.03. Adjusting plate; 3.04. Spraying frame; 3.05. Adjusting disc; 3.06. Adjusting threaded rod; 3.07. Rotating block; 3.08. Insertion rod; 3.09. Threaded block; 3.10. Storage frame; 3.11. Connecting rod; 3.12. Second auxiliary wheel; 3.13. Second liquid inlet pipe; 3.14. Inclined receiving plate; 3.15. Third auxiliary wheel; 3.16. Spray head; 3.17. Second support plate; 3.18. Flow pipe; 3.19. Pressure box; 3.20. Protective box; 3.21. Uniform speed motor; 3.22. Liquid flow channel; 3.23. Connecting shaft; 3.24. Guide pipe; 3.25. Third electric push rod; 3.26. Slider; 3.27. Fixing block; 3.28. Fourth electric push rod; 3.29. Second rubber plate. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0024] Example 1: Reference Figure 1 - Figure 8 In one embodiment of the present invention, a liquid epoxy airless synchronous spraying device for ultra-long steel pipes is provided, comprising a main structure 100, a clamping and feeding structure 200 and a spraying linkage structure 300.

[0025] The main structure 100 includes a fixed rail plate 101 and a load-bearing rod 106 fixedly connected to the upper surface of the fixed rail plate 101. T-shaped grooves 102 are provided on both sides of the fixed rail plate 101. Furthermore, the clamping and feeding structure 200 includes a T-shaped block 202 slidably connected to the inner surface of the T-shaped groove 102 and a fixed frame 215 fixedly connected to the upper surface of the load-bearing rod 106. A first electric push rod 204 is fixedly connected to the upper surface of the fixed rail plate 101. A sliding groove 222 is opened in the fixed rail plate 101, and a moving plate 225 is slidably connected to the inner surface of the sliding groove 222. Finally, the spraying linkage structure 300 includes a slider 326 slidably connected to the inner surface of the fixed track plate 101 and a storage frame 310 fixedly connected to the upper surface of the slider 326. An insertion rod 308 is slidably connected to one side of the storage frame 310, a spraying frame 304 is fixedly connected to one side of the storage frame 310, and a connecting rod 311 is fixedly connected to the lower surface of the storage frame 310.

[0026] Furthermore, a connecting frame 103 is fixedly connected to one side of the T-block 202, and a fixing plate 104 is fixedly connected to the upper surface of the connecting frame 103. There are two sets of connecting frames 103, and both sets of connecting frames 103 are symmetrical about the center of the fixing rail plate 101. The number of connecting frames 103 is adapted to the number of T-blocks 202. The two sets of connecting frames 103 are fixedly connected to the T-blocks 202 on both sides respectively, and move synchronously with the T-blocks 202 along the T-shaped slide 102 to realize the clamping and feeding of the steel pipe body 105. The fixing plate 104 connects and reinforces the connecting frames 103 on the same side to enhance the overall rigidity. The symmetrical arrangement ensures that the clamping force on both sides is balanced, prevents the steel pipe from swaying during movement, and ensures that the axis of the steel pipe and the center of the nozzle are aligned during the spraying process.

[0027] Furthermore, a connecting plate 205 is fixedly connected to the upper surface of the first electric push rod 204, a connecting rod 206 is fixedly connected to the upper surface of the connecting plate 205, a load-bearing wheel 207 is rotatably connected to the outer surface of the connecting rod 206, and a steel pipe body 105 is rolledly connected to the outer surface of the load-bearing wheel 207. A drive motor 201 is fixedly connected to one side of the fixed rail plate 101. The first electric push rod 204 drives the connecting plate 205 and the connecting rod 206 to rise and fall, thereby adjusting the height of the load-bearing wheel 207 so that the outer surface of the load-bearing wheel 207 contacts the lower surface of the steel pipe body 105 and forms a rolling support. The drive motor 201 provides power for the subsequent drive of the lead screw 203. The load-bearing wheel 207 passively rotates with the axial movement of the steel pipe body 105, which not only bears the weight of the steel pipe but also reduces frictional resistance, preventing the steel pipe from bending and deforming due to excessive overhang, and preventing the support components from scratching the sprayed outer wall coating.

[0028] Furthermore, a lead screw 203 is fixedly connected to one end of the output shaft of the drive motor 201, and a guide rod 213 is fixedly connected to the inner surface of another set of T-shaped slide grooves 102. The inner surface of one set of T-shaped blocks 202 is slidably connected to the outer surface of the guide rod 213. A protective frame 214 is fixedly connected to one side of the fixed rail plate 101. A limit guide plate 223 is fixedly connected to the inner surface of the slide groove 222. A push plate 208 is fixedly connected to one end of the moving plate 225, and the outer surface of the moving plate 225 is slidably connected to the lower surface of the limit guide plate 223. The drive motor 201 drives... The lead screw 203 rotates, and through the thread, it drives one set of T-blocks 202 to move along the T-shaped slide 102. The other set of T-blocks 202 slides synchronously on the guide rod 213, forming a double guide rail to ensure the smoothness of the linear motion of the clamping mechanism. The protective frame 214 protects the moving parts inside the fixed rail plate 101 to prevent foreign objects from entering. The limiting guide plate 223 provides horizontal guidance for the moving plate 225, pushes the plate 208 to move with the moving plate 225, and transmits power to the support rod 209 to realize the axial feeding of the steel pipe body 105.

[0029] Furthermore, a support rod 209 is fixedly connected to the upper surface of the push plate 208, and the outer surface of the push plate 208 is slidably connected to the inner surface of the protective frame 214. A mounting plate 211 is fixedly connected to one side of the support rod 209, and triangular blocks 210 are fixedly connected to both sides of the support rod 209. One side of the triangular blocks 210 is fixedly connected to one side of the mounting plate 211. A second electric push rod 212 is fixedly connected to one side of the connecting frame 103. A pressing plate 216 is fixedly connected to one end of the second electric push rod 212, and a first rubber plate 217 is fixedly connected to the end of the pressing plate 216 away from the second electric push rod 212. The... As the support rod 209 moves horizontally with the push plate 208, it drives the mounting plate 211 and the triangular block 210 to move synchronously. The triangular block 210 enhances the connection strength between the support rod 209 and the mounting plate 211. The second electric push rod 212 on the connecting frame 103 drives the extrusion plate 216 and the first rubber plate 217 to apply a flexible clamping force to the side of the steel pipe body 105, forming a double-sided clamping with another set of first rubber plates 217 on the mounting plate 211. This ensures that the steel pipe does not swing laterally when moving axially, and also uses the elasticity of the rubber to avoid scratching the surface of the steel pipe, while adapting to the clamping requirements of steel pipes of different diameters.

[0030] Furthermore, a second electric push rod 212 is also fixedly connected to one side of the mounting plate 211. Symmetrically distributed mounting rods 220 are fixedly connected to the inner surface of the fixing frame 215. A mounting ring 221 is fixedly connected to the outer surface of the mounting rods 220. A first support plate 218 is fixedly connected to the outer surface of the mounting ring 221. A first auxiliary wheel 219 is rotatably connected to the side of the first support plate 218 away from the mounting ring 221. A first liquid inlet pipe 224 is fixedly connected to the inner surface of the mounting rods 220. The second electric push rod 212 on the mounting plate 211 drives its corresponding first rubber plate 217, which connects to the connecting frame 103. The first rubber plate 217 works in concert to apply a controllable clamping force simultaneously from both sides of the steel pipe body 105; the mounting rod 220 and mounting ring 221 inside the fixing frame 215 form a support frame; the first support plate 218 fixes the first auxiliary wheel 219 to the outer surface of the mounting ring 221; the first auxiliary wheel 219 rolls in contact with its outer wall when the steel pipe body 105 moves, providing auxiliary support and keeping the steel pipe in a horizontal center position; the first liquid inlet pipe 224 is built into the mounting rod 220 and is used to transport the externally supplied liquid epoxy coating to the subsequent pressurization box 319 to provide raw materials for synchronous spraying.

[0031] Working principle: By using the fixed rail plate 101, T-shaped slide 102, connecting frame 103, fixed plate 104, steel pipe body 105 and load-bearing rod 106, the fixed rail plate 101 is used to install the entire equipment. Furthermore, the T-shaped slide 102 is used to assist in the overall movement of the equipment. Furthermore, the connecting frame 103 is moved under the guidance of the T-shaped slide 102. Finally, the fixed plate 104 is used to fix the connecting frames 103 on both sides, thereby improving the squeezing and moving effect of the equipment to a certain extent. The drive motor 201, T-block 202, lead screw 203, push plate 208, support rod 209, triangular block 210, mounting plate 211, second electric push rod 212, extrusion plate 216, and first rubber plate 217 are used to drive the lead screw 203 via the output shaft of the drive motor 201. The lead screw 203 then drives the T-block 202, causing it to move within the T-shaped groove 102. Simultaneously, the movement of the T-block 202 drives the connecting frame 103 and... The fixed plate 104 moves synchronously, and then the second electric push rod 212 presses the first rubber plate 217 toward one side of the steel pipe body 105. At the same time, the first rubber plate 217 on one side of the mounting plate 211 presses and contacts the other side of the steel pipe body 105. The first rubber plates 217 on both sides cooperate with each other, so that the steel pipe body 105 moves toward the spraying linkage structure 300 under the drive of the drive motor 201, thereby enabling the inner and outer surfaces of the steel pipe to be sprayed synchronously to a certain extent. Using the first electric push rod 204, connecting plate 205, connecting rod 206, load-bearing wheel 207, fixed frame 215, first support plate 218, first auxiliary wheel 219, mounting rod 220, mounting ring 221 and first liquid inlet pipe 224, the load-bearing rod 106 is fixed to the lower surface of the fixed frame 215, so that when the steel pipe body 105 moves, the pressure box 319 inside the spraying linkage structure 300 is limited to prevent it from moving with the steel pipe body 105, thereby providing support for the steel pipe body 105 to a certain extent. Furthermore, the height of the load-bearing wheel 207 is adjusted by the first electric push rod 204, so that the outer surface of the steel pipe body 105 is supported by the load-bearing wheel 207, thereby enabling the equipment to quickly perform the feeding and spraying effect after positioning. By utilizing the inclined plate 314, the third auxiliary wheel 315, the spray head 316, the second support plate 317, the pressure box 319, the protective box 320, the uniform speed motor 321, the flow channel 322, the connecting shaft 323, and the guide pipe 324, the first liquid inlet pipe 224 pressurizes and injects the coating material into the pressure box 319, causing it to accumulate in the flow channel 322. Furthermore, the uniform speed motor 321 drives the connecting shaft 323 to rotate, causing the coating material to flow on the outer surface of the connecting shaft 323. At the same time, one side of the guide pipe 324 is rotatably connected to one side of the pressure box 319, so that the flow channel 322 inside the pressure box 319 and the internal space of the guide pipe 324 are interconnected. Thus, during the pressurization process of the external equipment, the coating material is sprayed onto the inner surface of the steel pipe body 105 through the spray head 316, thereby improving the processing effect of the equipment to a certain extent. Utilizing a bearing plate 301, an L-shaped plate 302, an adjusting plate 303, a spray frame 304, an adjusting disc 305, an adjusting threaded rod 306, a rotating block 307, an insertion rod 308, a threaded block 309, a storage frame 310, a connecting rod 311, a second auxiliary wheel 312, a fixing block 327, a fourth electric push rod 328, and a second rubber plate 329, the connecting rod 311 fixes the second auxiliary wheel 312 to the lower surface of the storage frame 310. This allows the second auxiliary wheel 312 to provide stable support for the steel pipe body 105, enabling the steel pipe body 105 to simultaneously support the storage frame 310 during movement. When the dimensions of the steel pipe body 105 change, it can be quickly... The adjustment disc 305 is rotated to make the adjustment threaded rod 306 rotate, which in turn makes the adjustment threaded rod 306 cooperate with the threaded block 309 to raise one of the receiving frames 310. At the same time, the position of the receiving frame 310 below is adjusted by the adjustment plate 303, thereby improving the adaptability of the equipment to a certain extent. After the steel pipe body 105 is sprayed, the third electric push rod 325, the fourth electric push rod 328 and the second rubber plate 329 cooperate with each other to make the steel pipe body 105 push out from the annular structure formed by the receiving frame 310 during the unloading process.

[0032] Example 2: Reference Figure 2 - Figure 8The difference from Embodiment 1 is that: a bearing plate 301 is fixedly connected to one side of the fixed rail plate 101, an L-shaped plate 302 is fixedly connected to the upper surface of the bearing plate 301, a third electric push rod 325 is fixedly connected to one side of the L-shaped plate 302, a fixing block 327 is fixedly connected to one end of the third electric push rod 325, a fourth electric push rod 328 is fixedly connected to the inner surface of the fixing block 327, and a second rubber plate 329 is fixedly connected to one end of the fourth electric push rod 328. The third electric push rod 325 is fixed to one side of the L-shaped plate 302, and its telescopic shaft drives the fixing block 327 and the fourth electric push rod 328. 28. The entire structure moves horizontally, bringing the second rubber plate 329 close to the end of the steel pipe body 105. The fourth electric push rod 328 drives the second rubber plate 329 to align it with the steel pipe body 105. When the steel pipe body 105 completes the inner and outer wall spraying and moves to the unloading station, the third electric push rod 325 extends, and the fourth electric push rod 328 moves simultaneously, causing the second rubber plate 329 to contact the end face of the steel pipe body 105 and apply a pushing force, pushing the steel pipe body 105 out of the annular support structure formed by the storage frame 310 and the spraying frame 304, realizing automatic unloading and avoiding damage to the coating caused by manual contact with the wet film.

[0033] Furthermore, a flow pipe 318 is fixedly connected to one side of the storage frame 310, and a second liquid inlet pipe 313 is fixedly connected to one side of the flow pipe 318. A rotating block 307 is fixedly connected to one side of the storage frame 310, and a threaded block 309 is fixedly connected to one side of the storage frame 310. An adjusting threaded rod 306 is rotatably connected to the inner surface of the rotating block 307, and an adjusting threaded rod 306 is threadedly connected to the inner surface of the threaded block 309. The liquid epoxy coating introduced by the second liquid inlet pipe 313 is transported to the storage frame 310 through the flow pipe 318, supplying material for subsequent inner wall spraying. The rotating block 307 is fixed to one side of the storage frame 310, providing rotational support for the adjusting threaded rod 306. The threaded block 309 is fixed to the other side of the storage frame 310, forming a threaded engagement with the adjusting threaded rod 306. When the adjusting threaded rod 306 is rotated, since the rotating block 307 and the threaded block 309 are respectively connected to the two sets of storage frames 310, the rotation of the adjusting threaded rod 306 will change the relative distance between the two sets of storage frames 310, thereby realizing the adaptability adjustment of the spraying mechanism to steel pipes of different diameters, and quickly switching product specifications without replacing parts.

[0034] Furthermore, an adjusting disc 305 is fixedly connected to the end of the adjusting threaded rod 306 away from the rotating block 307, and a second auxiliary wheel 312 is rotatably connected to one end of the connecting rod 311. The outer surface of the second auxiliary wheel 312 is fixedly connected to the outer surface of the steel pipe body 105. A pressure box 319 is fixedly connected to one side of the mounting rod 220. A flow channel 322 is opened on the inner surface of the pressure box 319, and a protective box 320 is fixedly connected to the inner surface of the flow channel 322. The adjusting disc 305 provides a gripping part for manual adjustment by the operator. Rotating the adjusting disc 305... This allows the adjusting threaded rod 306 to rotate, enabling rapid adjustment of the distance between the two sets of storage frames 310. The second auxiliary wheel 312 is rotatably connected to the lower surface of the storage frame 310 via the connecting rod 311, and its outer surface rolls in contact with the outer wall of the steel pipe body 105, providing assistance when the steel pipe body 105 moves axially. The pressure box 319 is fixed to one side of the mounting rod 220, and its internal liquid flow channel 322 is used to store and guide high-pressure liquid epoxy coating. The protective box 320 is equipped with a uniform speed motor 321, which protects the internal components to a certain extent.

[0035] Furthermore, a constant-speed motor 321 is fixedly connected to the inner surface of the protective box 320, and a connecting shaft 323 is fixedly connected to one end of the output shaft of the constant-speed motor 321. An inclined plate 314 is fixedly connected to the outer surface of the pressure box 319, and a second support plate 317 is fixedly connected to one side of the inclined plate 314. A third auxiliary wheel 315 is rotatably connected to one side of the second support plate 317. An adjusting plate 303 is fixedly connected to one side of the slider 326. A guide pipe 324 is fixedly connected to the outer surface of the connecting shaft 323, and a spray head 316 is fixedly connected to one end of the guide pipe 324. A rotating connection is made to one side of the pressure box 319. A constant-speed motor 321 drives the connecting shaft 323 to rotate, which in turn drives the guide pipe 324 and spray head 316 to rotate uniformly around the central axis. This ensures that the spraying material is evenly distributed under centrifugal force, while preventing paint deposition inside the pipe. An inclined connecting plate 314 and a second support plate 317 form an outer wall spraying support. A third auxiliary wheel 315 is rotatably connected to one side of the second support plate 317, used to support the pressure box 319 inside the steel pipe body 105 and guide its smooth movement, forming an inner and outer connection with the outer wall spraying device. Synchronous operation; the adjusting plate 303 is fixed to one side of the slider 326, and the initial position of the storage frame 310 can be adjusted according to the diameter of the steel pipe; one end of the guide tube 324 is fixedly connected to the connecting shaft 323, and the other end is rotatably connected to one side of the pressure box 319, so that the high-pressure coating enters the guide tube 324 from the liquid flow tank 322 through the internal channel of the connecting shaft 323, and is finally sprayed onto the inner wall of the steel pipe body 105 by the spray head 316 in an airless atomized form; this inner wall spraying mechanism adopts a fixed nozzle and the axial movement of the steel pipe, which eliminates the need to extend the long spray bar into the pipe and avoids the flexibility of the spray bar. The problem of spraying eccentricity caused by the shape of the pipe has been completely solved, as has the issue of the self-propelled trolley's drive wheels contacting the wet film. This has enabled synchronous, uniform, and high-quality spraying of the inner and outer walls of ultra-long steel pipes.

[0036] Working principle: First, before the equipment is put into operation, the operator hoists the extra-long steel pipe body 105 to be sprayed onto the upper surface of the load-bearing roller 207 of the clamping and feeding structure 200. The load-bearing roller 207 is connected to the first electric push rod 204 through the connecting rod 206 and the connecting plate 205. According to the outer diameter of the steel pipe, the first electric push rod 204 is activated, which drives the connecting plate 205 and the connecting rod 206 to rise and fall, precisely adjusting the height of the load-bearing roller 207 so that the outer surface of the load-bearing roller 207 is flush with the steel pipe body 105. The lower surface makes good contact, forming rolling support. At the same time, the first auxiliary wheel 219 is rotatably connected to the mounting rod 220 inside the fixed frame 215 via the first support plate 218. The mounting ring 221 fixes the first support plate 218 to the mounting rod 220. The first auxiliary wheel 219 contacts the inner wall of the steel pipe from above or the side, providing auxiliary support. The adjustment of the first electric push rod 204 keeps the steel pipe axis horizontal and adapts to the support requirements of different pipe diameters, avoiding bending deformation of the steel pipe due to excessive overhang. Secondly, after the steel pipe is supported in place, the clamping mechanism of the clamping feed structure 200 starts to operate. The second electric push rod 212 on the connecting frame 103 drives the extrusion plate 216 and the first rubber plate 217 to move to the side of the steel pipe. At the same time, another set of second electric push rods 212 on the mounting plate 211 drives the corresponding first rubber plate 217 to move closer from the opposite side, forming a double-sided flexible clamping. The elastic material of the first rubber plate 217 provides sufficient clamping force to prevent the steel pipe from swinging laterally during the spraying process, and also avoids scratching the surface of the steel pipe. The drive motor 201 starts, and its output shaft drives the lead screw 203 to rotate. The lead screw 203 drives one set of T-blocks 202 along one side of the fixed rail plate 101 through the thread. The T-shaped chute 102 moves, and another set of T-shaped blocks 202 slides synchronously on the guide rod 213 to form a double guide rail, ensuring the stability of the linear movement of the clamping device. The T-shaped blocks 202 drive the connecting frame 103 and the fixing plate 104 to move synchronously, and then push the steel pipe body 105 to move at a constant speed along the axial direction through the second electric push rod 212 and the first rubber plate 217. The moving plate 225 moves with the push plate 208 under the guidance of the limiting guide plate 223. The support rod 209 and the mounting plate 211 follow synchronously to keep the clamping point moving. The load-bearing wheel 207 and the first auxiliary wheel 219 rotate passively when the steel pipe moves to reduce frictional resistance, while ensuring that the axis of the steel pipe is aligned with the center of the subsequent spraying equipment. Secondly, while the steel pipe is being fed axially, the spraying linkage structure 300 begins operation. For internal wall spraying, the external feeding device pressurizes the liquid epoxy coating and then sends it through the first inlet pipe 224 and the second inlet pipe 313 into the pressurization box 319 and the storage frame 310, respectively. The flow tank 322 in the pressurization box 319 stores the high-pressure coating. The protective box 320 provides sealed protection for the uniform speed motor 321. The uniform speed motor 321 starts and drives the connecting shaft 323 to rotate. The connecting shaft 323 drives the guide pipe 324 and the spray head 316 to rotate uniformly around the axis of the steel pipe. The high-pressure coating enters the guide pipe 324 from the flow tank 322 through the internal channel of the connecting shaft 323, and is finally sprayed by the spray head 316 at a constant speed. The coating is sprayed onto the inner wall of the steel pipe in an air-atomized form. Because the nozzle is fixed in position and rotates at a constant speed, while the steel pipe moves axially at a constant speed, the coating forms a continuous and uniform spiral band coating on the inner wall of the steel pipe. This completely avoids the eccentricity problem caused by the flexible deformation of traditional long spray bars and also eliminates the hidden danger of the self-propelled trolley drive wheel damaging the wet film. For the outer wall spraying, the spray frame 304 set on the equipment also sprays the coating onto the outer wall of the steel pipe in an airless spraying manner. Because the steel pipe moves axially at the same time, the outer wall coating is also continuous and uniform. The inner wall spraying mechanism and the outer wall spraying mechanism share the same feeding system and work synchronously, realizing the one-time completion of coating of the inner and outer walls of the steel pipe, eliminating the waiting time and surface contamination risk of step-by-step operation. Subsequently, during the movement of the steel pipe, the storage frame 310 in the spraying linkage structure 300 is connected to the second auxiliary wheel 312 through the connecting rod 311. The second auxiliary wheel 312 rolls in contact with the inner wall of the steel pipe, providing auxiliary support near the spraying area to prevent the steel pipe from sagging due to its own weight and affecting the concentricity of the inner wall coating. At the same time, the second support plate 317 on the inclined connecting plate 314 is connected to the third auxiliary wheel 315, which also supports and guides the steel pipe. The slider 326 and the adjusting plate 303 can slide along the inner surface of the fixed rail plate 101 to match the spraying stroke of steel pipes of different sizes. These auxiliary wheels are all made of non-metallic materials or have rubber-coated surfaces to avoid damaging the surface of the steel pipe. When different diameter steel pipes need to be sprayed, the operator rotates the adjusting disc 305, which drives the adjusting threaded rod 306 to rotate. The adjusting threaded rod 306 rotates inside the rotating block 307. Driven by the thread inside the threaded block 309, the relative distance between the two sets of storage frames 310 is changed. At the same time, the initial position of the slider 326 is adjusted by the adjusting plate 303, so that the spraying mechanism can be aligned with the center of different pipe diameters. In addition, the first electric push rod 204 adjusts the height of the load-bearing wheel 207, and the second electric push rod 212 adjusts the clamping position of the first rubber plate 217. Together, they can achieve rapid production changeover without changing parts and adapt to the spraying needs of multiple specifications of steel pipes. Then, when the steel pipe body 105 completes the spraying of its entire length and moves to the unloading station, the clamping feed structure 200 stops feeding, and the third electric push rod 325 on the L-shaped plate 302 fixed on the bearing plate 301 starts. Its telescopic shaft drives the fixed block 327 and the fourth electric push rod 328 to move horizontally, so that the second rubber plate 329 approaches the end of the steel pipe. The fourth electric push rod 328 makes vertical fine adjustments so that the second rubber plate 329 is aligned with the steel pipe. Then the third electric push rod 325 continues to extend, and the second rubber plate 329 pushes the end face of the steel pipe, pushing the steel pipe out of the annular support structure formed by the storage frame 310 and the spraying frame 304, so that the external handling equipment can quickly clamp the product. This automatic unloading method avoids manual contact with the coating that has not been fully cured, ensuring the integrity of the coating. Finally, this invention achieves stable support, flexible clamping, and uniform axial movement of ultra-long steel pipes through the adjustable load-bearing wheel 207 driven by the first electric push rod 204, the double-sided flexible rubber plates driven by the second electric push rod 212, and the linear feed mechanism driven by the lead screw 203 in the clamping and feeding structure 200. Through the fixed uniform-speed rotating nozzle in the spraying linkage structure 300, continuous airless spraying is performed on the inner wall of the steel pipe during its movement, completely eliminating the drawbacks of traditional long spray bar flexural deformation and self-propelled trolley damage to the wet film. The outer wall spraying assembly enables synchronous operation of the inner and outer walls, shortening the production cycle and avoiding surface contamination. The adjusting disc 305, adjusting threaded rod 306, and adjustable support wheel structures enable rapid adaptation to steel pipes of different diameters. The second rubber plate 329 driven by the third electric push rod 325 completes automatic unloading. The entire device enables efficient and high-quality synchronous coating of the inner and outer walls of ultra-long steel pipes, significantly improving coating uniformity and production efficiency.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for synchronous liquid epoxy spraying of ultra-long steel pipes, characterized in that, The synchronous spraying device includes: The main structure (100) includes a fixed rail plate (101) and a load-bearing rod (106) fixedly connected to the upper surface of the fixed rail plate (101). T-shaped grooves (102) are provided on both sides of the fixed rail plate (101). The clamping and feeding structure (200) includes a T-shaped block (202) slidably connected to the inner surface of the T-shaped groove (102) and a fixed frame (215) fixedly connected to the upper surface of the load-bearing rod (106). A first electric push rod (204) is fixedly connected to the upper surface of the fixed rail plate (101). A sliding groove (222) is opened in the fixed rail plate (101), and a moving plate (225) is slidably connected to the inner surface of the sliding groove (222). The spraying linkage structure (300) includes a slider (326) slidably connected to the inner surface of the fixed rail plate (101) and a storage frame (310) fixedly connected to the upper surface of the slider (326). An insertion rod (308) is slidably connected to one side of the storage frame (310), a spraying frame (304) is fixedly connected to one side of the storage frame (310), and a connecting rod (311) is fixedly connected to the lower surface of the storage frame (310).

2. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 1, characterized in that: A connecting frame (103) is fixedly connected to one side of the T-shaped block (202), and a fixing plate (104) is fixedly connected to the upper surface of the connecting frame (103). There are two sets of connecting frames (103), and both sets of connecting frames (103) are symmetrical about the center of the fixing rail plate (101). The number of connecting frames (103) is matched with the number of T-shaped blocks (202).

3. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 2, characterized in that: A connecting plate (205) is fixedly connected to the upper surface of the first electric push rod (204), a connecting rod (206) is fixedly connected to the upper surface of the connecting plate (205), a load-bearing wheel (207) is rotatably connected to the outer surface of the connecting rod (206), a steel pipe body (105) is rolledly connected to the outer surface of the load-bearing wheel (207), and a drive motor (201) is fixedly connected to one side of the fixed rail plate (101).

4. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 3, characterized in that: One end of the output shaft of the drive motor (201) is fixedly connected to a lead screw (203), and another set of the inner surface of the T-shaped slide groove (102) is fixedly connected to a guide rod (213). The inner surface of one set of the T-shaped block (202) is slidably connected to the outer surface of the guide rod (213). A protective frame (214) is fixedly connected to one side of the fixed rail plate (101). A limit guide plate (223) is fixedly connected to the inner surface of the slide groove (222). A push plate (208) is fixedly connected to one end of the moving plate (225). The outer surface of the moving plate (225) is slidably connected to the lower surface of the limit guide plate (223).

5. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 4, characterized in that: A support rod (209) is fixedly connected to the upper surface of the push plate (208). The outer surface of the push plate (208) is slidably connected to the inner surface of the protective frame (214). An installation plate (211) is fixedly connected to one side of the support rod (209). Triangular blocks (210) are fixedly connected to both sides of the support rod (209). One side of the triangular block (210) is fixedly connected to one side of the installation plate (211). A second electric push rod (212) is fixedly connected to one side of the connecting frame (103). A pressing plate (216) is fixedly connected to one end of the second electric push rod (212). A first rubber plate (217) is fixedly connected to the end of the pressing plate (216) away from the second electric push rod (212).

6. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 5, characterized in that: A second electric push rod (212) is also fixedly connected to one side of the mounting plate (211). A symmetrically distributed mounting rod (220) is fixedly connected to the inner surface of the fixing frame (215). A mounting ring (221) is fixedly connected to the outer surface of the mounting rod (220). A first support plate (218) is fixedly connected to the outer surface of the mounting ring (221). A first auxiliary wheel (219) is rotatably connected to the side of the first support plate (218) away from the mounting ring (221). A first liquid inlet pipe (224) is fixedly connected to the inner surface of the mounting rod (220).

7. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 6, characterized in that: A bearing plate (301) is fixedly connected to one side of the fixed rail plate (101). An L-shaped plate (302) is fixedly connected to the upper surface of the bearing plate (301). A third electric push rod (325) is fixedly connected to one side of the L-shaped plate (302). A fixing block (327) is fixedly connected to one end of the third electric push rod (325). A fourth electric push rod (328) is fixedly connected to the inner surface of the fixing block (327). A second rubber plate (329) is fixedly connected to one end of the fourth electric push rod (328).

8. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 7, characterized in that: A flow tube (318) is fixedly connected to one side of the storage frame (310), a second liquid inlet tube (313) is fixedly connected to one side of the flow tube (318), a rotating block (307) is fixedly connected to one side of the storage frame (310), a threaded block (309) is fixedly connected to one side of the storage frame (310), an adjusting threaded rod (306) is rotatably connected to the inner surface of the rotating block (307), and an adjusting threaded rod (306) is threadedly connected to the inner surface of the threaded block (309).

9. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 8, characterized in that: An adjusting disc (305) is fixedly connected to one end of the adjusting threaded rod (306) away from the rotating block (307). A second auxiliary wheel (312) is rotatably connected to one end of the connecting rod (311). The outer surface of the second auxiliary wheel (312) is fixedly connected to the outer surface of the steel pipe body (105). A pressure box (319) is fixedly connected to one side of the mounting rod (220). A flow channel (322) is opened on the inner surface of the pressure box (319). A protective box (320) is fixedly connected to the inner surface of the flow channel (322).

10. The liquid epoxy airless synchronous spraying device for ultra-long steel pipes according to claim 9, characterized in that: A constant speed motor (321) is fixedly connected to the inner surface of the protective box (320). A connecting shaft (323) is fixedly connected to one end of the output shaft of the constant speed motor (321). An inclined plate (314) is fixedly connected to the outer surface of the pressure box (319). A second support plate (317) is fixedly connected to one side of the inclined plate (314). A third auxiliary wheel (315) is rotatably connected to one side of the second support plate (317). An adjusting plate (303) is fixedly connected to one side of the slider (326). A guide pipe (324) is fixedly connected to the outer surface of the connecting shaft (323). A spray head (316) is fixedly connected to one end of the guide pipe (324). One side of the guide pipe (324) is rotatably connected to one side of the pressure box (319).

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