A kind of anticorrosive coating spraying device for pressure pipeline production

Abstract

This invention discloses an anti-corrosion coating spraying device for pressure pipeline production, relating to the technical field of coating spraying devices. It includes a spraying device body, a positioning mechanism positioned above the spraying device body, and an anti-vibration mechanism inside the spraying device body. The positioning mechanism includes a limiting unit positioned above the spraying device body, which limits the distance between the nozzle and the inner wall of the pressure pipeline. The positioning mechanism also includes an anti-drift unit positioned above the spraying device body, which reduces the probability of the coating drifting outside the pipeline when sprayed near the pipeline opening. The limiting unit includes an adjusting frame. This anti-corrosion coating spraying device for pressure pipeline production, by incorporating the limiting unit, the anti-drift unit, and the anti-vibration mechanism, can effectively prevent uneven spraying caused by misalignment of the axis and height difference during equipment use.

Description

Technical Field

[0001] This invention relates to the field of coating spraying equipment technology, specifically to an anti-corrosion coating spraying equipment for pressure pipeline production. Background Technology

[0002] Coating spraying equipment is a professional device that enables uniform and dense spraying of protective coatings on workpiece surfaces. It can precisely control the spraying thickness and process. In the production of pressure pipelines, this device is widely used to spray anti-corrosion and wear-resistant coatings on the inner and outer walls of pipelines, effectively improving the pressure-bearing and corrosion-resistant performance of pipelines, extending their service life, and ensuring the long-term safe and stable operation of pressure pipelines.

[0003] Currently, when existing spraying equipment performs anti-corrosion spraying on the inner layer of pipes, the rotation axis of the rotating spraying arm cannot be aligned with the central axis of the pipe. Therefore, when the rotating arm rotates, the distance between the nozzle at one end and the inner wall of the pipe will vary, resulting in uneven spraying. In addition, when the spraying equipment moves backward out of the pipe, there is a certain height difference between the pipe and the ground. As a result, the equipment will jerk and shake due to the height difference, causing sudden changes in the nozzle posture and resulting in uneven spraying thickness at the outlet section.

[0004] Combining the above issues, we find that the existing anti-corrosion coating spraying devices for pressure pipeline production on the market are difficult to avoid the problems mentioned above when in use. Even if they can be solved, they require the use of external tools, thus failing to achieve the desired effect. Therefore, we propose an anti-corrosion coating spraying device for pressure pipeline production. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-corrosion coating spraying device for pressure pipeline production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a spraying device for anti-corrosion coating in pressure pipeline production, comprising a spraying device body, a positioning mechanism being provided above the spraying device body, and an anti-vibration mechanism being provided inside the spraying device body; The positioning mechanism includes a limiting unit, which is disposed above the body of the spraying device and is capable of limiting the distance between the nozzle and the inner wall of the pressure pipe. The positioning mechanism also includes an anti-drift unit, which is located above the body of the spraying device. The anti-drift unit can reduce the probability of the coating drifting outside the pipe when sprayed near the pipe opening.

[0007] Preferably, the limiting unit includes an adjusting frame, with two mounting blocks fixedly connected to the upper surface of the adjusting frame. Each mounting block has a roller rotatably connected to its inner wall. A first drive shaft is slidably connected inside the adjusting frame, and a first bullseye bearing is embedded inside the first drive shaft. A first lifting plate is fixedly connected to the outer surface of the first drive shaft. Two first force-bearing springs are fixedly connected to the upper surface of the first lifting plate and the inner top wall of the adjusting frame. A rectangular plate is fixedly connected to the inner wall of the adjusting frame, and a first spiral cylinder is rotatably connected to the inner wall of the rectangular plate. The bottom end of the first drive shaft passes through an opening in the first spiral cylinder and extends to... The inner cavity of the first spiral cylinder has several identical raised strips on the outer surface of the first drive shaft, and several identical recessed grooves on the inner wall of the first spiral cylinder. The spiral strips on the surface of the first drive shaft correspond to the spiral grooves on the inner wall of the first spiral cylinder. A circular cylinder is fixedly connected to the inner wall of the adjusting frame. A rotating ring is provided inside the circular cylinder. The outer surface of the rotating ring is in contact with the inner wall of the circular cylinder. A through hole is provided on the surface of the rotating ring. A cylindrical protrusion is provided at the top of the rotating ring. The cylindrical protrusion is rotatably connected to the inner wall of the circular cylinder. The bottom end of the first spiral cylinder is fixedly connected to the top end of the cylindrical protrusion.

[0008] Preferably, a first rectangular frame is fixedly connected to the output end of the spraying device body, a second force spring is fixedly connected to the inner bottom wall of the first rectangular frame, and the top end of the second force spring is fixedly connected to the bottom surface of the adjustment frame.

[0009] Preferably, the output end of the spraying device body is fixedly connected to a flexible hose, one end of which passes through the first rectangular frame and extends to the outside of the first rectangular frame, and the other end of which is fixedly connected to the left side of the adjustment frame. Several identical positioning blocks are fixedly connected to the front side of the first rectangular frame, and the flexible hose is disposed in the inner cavity of several positioning blocks.

[0010] Preferably, a mounting frame is fixedly connected to the back of the adjustment frame, a nozzle is fixedly connected to the inner wall of the mounting frame, the input end of the nozzle is fixedly connected to a connecting pipe, and one end of the connecting pipe is fixedly connected to the right side of the adjustment frame.

[0011] Preferably, the anti-drift unit includes a second rectangular frame, the left side of which is fixedly connected to the right side of the adjusting frame. A second drive shaft is slidably connected inside the second rectangular frame, and a second bullseye bearing is embedded inside the second drive shaft. A drive plate is fixedly connected to the bottom end of the second drive shaft. Two third force-bearing springs are fixedly connected to the bottom surface of the drive plate and the inner bottom wall of the second rectangular frame. A normally closed control button is fixedly connected to the inner bottom wall of the second rectangular frame. The bottom surface of the drive plate is in contact with the trigger end of the normally closed control button. The normally closed control button is connected in series to the power supply circuit of the traveling power mechanism of the spraying device body. A shielding component is provided inside the second rectangular frame.

[0012] Preferably, the shielding assembly includes a third drive shaft, the top end of which is fixedly connected to the bottom surface of the drive plate, the third drive shaft is disposed in the inner cavity of one of the third force springs, and the surface of the third drive shaft is provided with two sets of spiral strips.

[0013] Preferably, two sets of mounting plates are fixedly connected to the right side of the adjustment frame, with two mounting plates in each set. A second spiral cylinder is rotatably connected to the inner wall of each pair of mounting plates. Each second spiral cylinder has several identical spiral grooves on its inner wall, and each spiral strip is disposed in the inner cavity of the spiral groove.

[0014] Preferably, a connecting plate is fixedly connected to the outer surface of each of the second spiral cylinders, and a baffle is fixedly connected to one side of the two connecting plates. Two fourth force springs are fixedly connected to the inner bottom wall of the baffle, and an extension plate is fixedly connected to the top of the two fourth force springs. Two third bullseye bearings are fixedly connected to the inner wall of the extension plate.

[0015] Preferably, the anti-vibration mechanism includes two sets of hydraulic rods, each set containing two hydraulic rods. A fixed plate is fixedly connected to the telescopic end of each hydraulic rod. A one-way bearing is rotatably connected to the inner wall of each fixed plate. A short shaft is rotatably connected to the inner wall of each one-way bearing. A limit gear is fixedly connected to one end of each short shaft. Two sets of semicircular plates are fixedly connected to the bottom surface of the spraying device body, each set containing two semicircular plates. A long shaft is rotatably connected to the inner wall of every two semicircular plates. An adjusting plate is fixedly connected to the outer surface of each long shaft. Each adjusting plate... Two rollers are rotatably connected to the inner wall of the plate. A transmission gear is fixedly connected to both ends of each of the long shafts. Two square plates are fixedly connected to the front and back of the spraying device body. A return spring is fixedly connected to the bottom surface of each square plate. A second lifting plate is fixedly connected to the bottom end of each return spring. Rollers are rotatably connected to the inner wall of each second lifting plate. A positioning shaft is fixedly connected to the bottom surface of each square plate. Each positioning shaft is located in the inner cavity of the second lifting plate and the return spring. The teeth of each transmission gear mesh with the teeth of the second lifting plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting a limiting unit, the present invention can limit the distance between the nozzle and the inner wall of the pipe being sprayed. Therefore, regardless of whether the axis of the output end of the spraying device corresponds to the axis of the pipe being processed, the problem of uneven spraying can be avoided. It can also detect the concave position of the inner wall of the pipe and, in conjunction with the nozzle, spray more anti-corrosion coating on the concave position to increase the anti-corrosion effect.

[0017] 2. By setting up an anti-drift unit, the present invention can detect whether the nozzle is about to move out of the pipe and control the drive structure in the spraying device to stop running, reducing the impact of the drive structure's idling on the uniformity of spraying. In addition, the anti-drift unit can also reduce the probability of paint overflow when the nozzle is spraying near the pipe opening.

[0018] 3. This invention incorporates an anti-vibration mechanism, which provides support to the equipment as it moves out of the pipe, reducing the impact of height differences on coating uniformity. By including a limiting unit, an anti-drift unit, and an anti-vibration mechanism, it effectively prevents uneven coating caused by misalignment of the axis and height differences during equipment use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the structure of the baffle of the present invention; Figure 4 For the present invention Figure 3 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the nozzle structure of the present invention; Figure 6 This is a schematic diagram of the hydraulic rod of the present invention; Figure 7 For the present invention Figure 6 A magnified view of a section at point C; Figure 8 This is a schematic diagram of the long axis of the present invention.

[0020] In the diagram: 1. Spraying device body; 2. Positioning mechanism; 21. Limiting unit; 2101. Adjusting frame; 2102. First rectangular frame; 2103. Hose; 2104. Positioning block; 2105. Second force-bearing spring; 2106. Mounting block; 2107. Roller; 2108. First bullseye bearing; 2109. First force-bearing spring; 2110. First lifting plate; 2111. Rectangular plate; 2112. Circular cylinder; 2113. Spray head; 2114. Mounting frame; 2115. First drive shaft; 2116. First spiral cylinder; 2117. Rotating ring; 2118. Connecting pipe; 22. Anti-drift unit; 2201. Extension plate; 2202. Baffle; 2203. Third bullseye bearing; 2204. 2205. Fourth load-bearing spring; 2206. Second bullseye bearing; 2207. Second rectangular frame; 2208. Second drive shaft; 2209. Connecting plate; 22000. Third drive shaft; 2210. Mounting plate; 2211. Second spiral cylinder; 2212. Normally closed control button; 2213. Third load-bearing spring; 2214. Drive plate; 3. Anti-vibration mechanism; 301. Limit gear; 302. Square plate; 303. Positioning shaft; 304. Return spring; 305. Roller; 306. Adjusting plate; 307. Second lifting plate; 308. Roller; 309. Drive gear; 310. Long shaft; 311. Semicircular plate; 312. Hydraulic rod; 313. Fixing plate; 314. Short shaft; 315. One-way bearing. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The present invention provides a technical solution: a spraying device for anti-corrosion coating of pressure pipeline production, including a spraying device body 1, a positioning mechanism 2 is provided above the spraying device body 1, and an anti-vibration mechanism 3 is provided inside the spraying device body 1. The positioning mechanism 2 includes a limiting unit 21, which is disposed above the spraying device body 1. The limiting unit 21 can limit the distance between the nozzle and the inner wall of the pressure pipe.

[0023] As a further definition of the positioning mechanism 2 of the present invention, the defining unit 21 includes an adjusting frame 2101. Two mounting blocks 2106 are fixedly connected to the upper surface of the adjusting frame 2101. A roller 2107 is rotatably connected to the inner wall of each mounting block 2106. A first drive shaft 2115 is slidably connected inside the adjusting frame 2101. A first bullseye bearing 2108 is embedded inside the first drive shaft 2115. A first lifting plate 2110 is fixedly connected to the outer surface of the first drive shaft 2115. Two first force-bearing springs 2109 are fixedly connected to the upper surface of the first lifting plate 2110 and the inner top wall of the adjusting frame 2101. A rectangular plate 2111 is fixedly connected to the inner wall of the adjusting frame 2101. A first spiral cylinder 2116 is rotatably connected to the inner wall of the rectangular plate 2111. The bottom end of the first drive shaft 2115... The first drive shaft 2115 extends through the opening of the first spiral cylinder 2116 and into the inner cavity of the first spiral cylinder 2116. The outer surface of the first drive shaft 2115 is provided with several identical raised strips. The inner wall of the first spiral cylinder 2116 is provided with several identical recessed grooves. The spiral strips on the surface of the first drive shaft 2115 correspond to the spiral grooves on the inner wall of the first spiral cylinder 2116. The inner wall of the adjusting frame 2101 is fixedly connected to a circular cylinder 2112. A rotating ring 2117 is provided inside the circular cylinder 2112. The outer surface of the rotating ring 2117 is in contact with the inner wall of the circular cylinder 2112. A through hole is provided on the surface of the rotating ring 2117. A cylindrical protrusion is provided at the top of the rotating ring 2117. The cylindrical protrusion is rotatably connected to the inner wall of the circular cylinder 2112. The bottom end of the first spiral cylinder 2116 is fixedly connected to the top of the cylindrical protrusion.

[0024] Please see Figure 3 The output end of the spraying device body 1 is fixedly connected to a first rectangular frame 2102. The inner bottom wall of the first rectangular frame 2102 is fixedly connected to a second force spring 2105. The top end of the second force spring 2105 is fixedly connected to the bottom surface of the adjustment frame 2101. The second force spring 2105 can store elastic potential energy and provide power for the adjustment frame 2101 to maintain the same distance from the inner wall of the pipe.

[0025] Please see Figure 3The output end of the spraying device body 1 is fixedly connected to a hose 2103. One end of the hose 2103 passes through the first rectangular frame 2102 and extends to the outside of the first rectangular frame 2102. The other end of the hose 2103 is fixedly connected to the left side of the adjustment frame 2101. Several identical positioning blocks 2104 are fixedly connected to the front of the first rectangular frame 2102. The hose 2103 is set in the inner cavity of several positioning blocks 2104. By setting the hose 2103, the paint to be sprayed can be transported to the inside of the cylindrical cylinder 2112. The presence of the positioning blocks 2104 can limit the position of the hose 2103.

[0026] Please see Figure 4 An installation frame 2114 is fixedly connected to the back of the adjustment frame 2101. A nozzle 2113 is fixedly connected to the inner wall of the installation frame 2114. A connecting pipe 2118 is fixedly connected to the input end of the nozzle 2113. One end of the connecting pipe 2118 is fixedly connected to the right side of the adjustment frame 2101. By setting the installation frame 2114 and the nozzle 2113, the installation frame 2114 can fix the nozzle 2113. The spray angle of the nozzle 2113 is not parallel to the adjustment frame 2101, but there is a 10-degree angle difference between it and the adjustment frame 2101, so as to avoid a large amount of paint being sprayed on the adjustment frame 2101.

[0027] The specific implementation of this embodiment is as follows: When this device is needed, it is moved into the pressure pipe to be sprayed, and the lifting structure inside the spraying device body 1 is controlled to move the upper part of the spraying device body 1, the output end, the limiting unit 21, and the anti-drift unit 22 upwards, so that the output end of the spraying device body 1 is as close as possible to the center of the pressure pipe to be sprayed. During the adjustment process, the first bullseye bearing 2108 above the adjusting frame 2101, the second bullseye bearing 2205 and the third bullseye bearing 2203 in the anti-drift unit 22 will contact the inner wall of the pressure pipe until the first bullseye bearing 2108, the second bullseye bearing 2205 and the third bullseye bearing 2203 move to the center of the pressure pipe. Figure 4At positions corresponding to the two rollers 2107, as the device continues to move upward, the two rollers 2107 and the first bullseye bearing 2108 will simultaneously contact the inner wall of the pressure pipe. This will cause the adjusting frame 2101 to compress the second force spring 2105 and retract into the interior of the first rectangular frame 2102. Therefore, under the action of the second force spring 2105, even if the output end of the spraying device body 1 is not at the center of the pressure pipe axis, it can still ensure that the first bullseye bearing 2108 and the rollers 2107 are always in contact with the inner wall of the pressure pipe. To ensure the nozzle 2113 remains at the same distance from the pressure pipe, and when the first bullseye bearing 2108 and the first drive shaft 2115 are compressed and moved downwards, the spiral stripes on the surface of the first drive shaft 2115 slide in the spiral grooves on the inner wall of the first spiral cylinder 2116, thus driving the first spiral cylinder 2116 to rotate. When the first bullseye bearing 2108 moves to the position corresponding to the two rollers 2107, the first spiral cylinder 2116 and the rotating ring 2117 fixed at the bottom of the first spiral cylinder 2116 will also rotate ninety degrees, eventually rotating to... Figure 5 At this position, when the spraying device body 1 delivers paint to the inside of the nozzle 2113, it will pass through the opening on the surface of the rotating ring 2117. Therefore, the rotating ring 2117 determines the amount of paint entering the inside of the nozzle 2113. When the spraying device body 1 is performing normal spraying work, if there is a depression in the inner wall of the pressure pipe, the first bullseye bearing 2108 in the middle will move towards the depression under the action of the two first force springs 2109. This step will drive the first transmission shaft 2115 to move synchronously, which can drive the first spiral cylinder 2116 to rotate. At this time, the rotation of the first spiral cylinder 2116 will cause the rotating ring 2117 to rotate. At this time, the rotation of the rotating ring 2117 can reduce the blockage of the circular cylinder 2112, thereby increasing the amount of paint entering the inside of the nozzle 2113. Therefore, a large amount of paint can be sprayed on the depression, avoiding the problem of uneven spraying.

[0028] Example 2: Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The present invention provides a technical solution: a spraying device for anti-corrosion coating of pressure pipeline production. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The positioning mechanism 2 also includes an anti-drift unit 22. The anti-drift unit 22 is disposed above the body 1 of the spraying device. The anti-drift unit 22 can reduce the probability of the coating drifting outside the pipeline when spraying near the pipeline opening.

[0029] As a further definition of the positioning mechanism 2 of the present invention, the anti-drift unit 22 includes a second rectangular frame 2206. The left side of the second rectangular frame 2206 is fixedly connected to the right side of the adjusting frame 2101. A second transmission shaft 2207 is slidably connected inside the second rectangular frame 2206. A second bullseye bearing 2205 is embedded inside the second transmission shaft 2207. A transmission plate 2214 is fixedly connected to the bottom end of the second transmission shaft 2207. Two third force-bearing springs 2213 are fixedly connected together to the bottom surface of the transmission plate 2214 and the inner bottom wall of the second rectangular frame 2206. A normally closed control button 2212 is fixedly connected to the inner bottom wall of the second rectangular frame 2206. The bottom surface of the transmission plate 2214 is in contact with the trigger end of the normally closed control button 2212. The normally closed control button 2212 is connected in series to the power supply circuit of the traveling power mechanism of the spraying device body 1. A shielding component is provided inside the second rectangular frame 2206.

[0030] Please see Figure 5 The shielding assembly includes a third drive shaft 2209. The top end of the third drive shaft 2209 is fixedly connected to the bottom surface of the transmission plate 2214. The third drive shaft 2209 is disposed in the inner cavity of one of the third force springs 2213. The surface of the third drive shaft 2209 is provided with two sets of spiral strips. By providing the third drive shaft 2209, the third drive shaft 2209 can achieve the purpose of transmission.

[0031] Please see Figure 5 Two sets of mounting plates 2210 are fixedly connected to the right side of the adjusting frame 2101. Each set of mounting plates 2210 consists of two plates. A second spiral cylinder 2211 is rotatably connected to the inner wall of each pair of mounting plates 2210. The inner wall of each second spiral cylinder 2211 has several identical spiral grooves. Each spiral strip is set in the inner cavity of the spiral groove. By setting the mounting plates 2210, the mounting plates 2210 can fix the second spiral cylinder 2211. The spiral grooves on the inner wall of the second spiral cylinder 2211 can correspond to the spiral stripes on the surface of the third drive shaft 2209. Therefore, the movement of the third drive shaft 2209 can drive the second spiral cylinder 2211 to rotate.

[0032] Please see Figures 2-5Each second spiral cylinder 2211 has a connecting plate 2208 fixedly connected to its outer surface. A baffle 2202 is fixedly connected to one side of both connecting plates 2208. Two fourth force springs 2204 are fixedly connected to the inner bottom wall of the baffle 2202. An extension plate 2201 is fixedly connected to the top of the two fourth force springs 2204. Two third bullseye bearings 2203 are fixedly connected to the inner wall of the extension plate 2201. By setting the connecting plate 2208 and the baffle 2202, the position of the baffle 2202 can be adjusted by the connecting plate 2208, so that the baffle 2202 can block the coating at the pipe opening and prevent the coating from being dispersed into the outside air in large quantities.

[0033] The specific implementation of this embodiment is as follows: When the second bullseye bearing 2205 drives the second transmission shaft 2207 to move downward, it can transmit power to the transmission plate 2214, thereby pressing the normally closed control button 2212, so that the normally closed control button 2212 is in a pressurized state. At this time, the internal walking power mechanism of the spraying device body 1 will form a power supply circuit, and then the walking power mechanism can be controlled to run through the spraying device body 1. In addition, when the transmission plate 2214 moves downward, it will drive the third transmission shaft 2209 to move downward synchronously. During the downward movement, the spiral stripes fixed on the surface of the third transmission shaft 2209 will correspond to the spiral grooves opened inside the second spiral cylinder 2211, causing the second spiral cylinder 2211, the extension plate 2201 and the baffle 2202 to rotate 90 degrees clockwise, and finally rotate to Figure 3The position of the extension plate 2201 and the baffle 2202 is such that the extension plate 2201 compresses the fourth force spring 2204 under the action of the third bullseye bearing 2203. Therefore, the presence of the extension plate 2201 and the baffle 2202 will not affect the normal spraying operation. When the spraying device body 1 moves backward out of the pipe and performs spraying, when the third bullseye bearing 2203 is no longer in contact with the inner wall of the pipe, the extension plate 2201 will pop out from the inside of the baffle 2202 under the action of the elastic force of the fourth force spring 2204. At this time, the height of the extension plate 2201 is higher than the pipe opening. When the second bullseye bearing 2205 is no longer in contact with the inner wall of the pipe, the transmission plate 2214 will reset under the action of the third force spring 2213. This process will pull the third transmission shaft 2209 to move upward synchronously. Therefore, the second spiral cylinder 2211 will rotate ninety degrees counterclockwise. The extension plate 2201 and baffle 2202 are positioned against one side of the pipe opening. This blocks the paint sprayed from the nozzle 2113, preventing the nozzle from getting too close to the pipe opening and causing paint to scatter in the air. Additionally, when the transmission plate 2214 moves upward, it stops applying pressure to the normally closed control button 2212. The normally closed control button 2212 cuts off the power supply circuit to the internal walking mechanism of the spraying device body 1, causing the walking mechanism of the spraying device body 1 to automatically stop. During this process, the anti-vibration mechanism 3 is triggered and provides support to the spraying device body 1, keeping the walking wheels in the walking mechanism of the spraying device body 1 suspended in the air. This prevents the walking wheels of the spraying device body 1 from continuously rotating while suspended due to the anti-vibration mechanism 3, which could cause the entire spraying device body 1 to vibrate and result in uneven spraying. Example 3: Please refer to Figure 1 , Figure 2 and Figures 6-8 The present invention provides a technical solution: a corrosion-resistant coating spraying device for pressure pipeline production. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The anti-vibration mechanism 3 can reduce the impact on the coating thickness when the equipment moves out of the pipeline.

[0034] As a further definition of the anti-vibration mechanism 3 of the present invention, the anti-vibration mechanism 3 includes two sets of hydraulic rods 312, each set of hydraulic rods 312 having two rods. Each hydraulic rod 312 has a fixed plate 313 fixedly connected to its telescopic end. Each fixed plate 313 has a one-way bearing 315 rotatably connected to its inner wall. A short shaft 314 is rotatably connected to the inner wall of the one-way bearing 315. One end of the short shaft 314 is fixedly connected to a limit gear 301. Two sets of semi-circular plates 311 are fixedly connected to the bottom surface of the spraying device body 1, each set of semi-circular plates 311 having two plates. A long shaft 310 is rotatably connected to the inner wall of each pair of semi-circular plates 311. An adjusting plate 306 is fixedly connected to the outer surface of each long shaft 310. Each adjusting plate 306... Two rollers 305 are rotatably connected to the inner wall of the section plate 306. A transmission gear 309 is fixedly connected to both ends of each long shaft 310. Two square plates 302 are fixedly connected to the front and back of the spraying device body 1. A return spring 304 is fixedly connected to the bottom surface of each square plate 302. A second lifting plate 307 is fixedly connected to the bottom end of each return spring 304. A roller 308 is rotatably connected to the inner wall of each second lifting plate 307. A positioning shaft 303 is fixedly connected to the bottom surface of each square plate 302. Each positioning shaft 303 is set in the inner cavity of the second lifting plate 307 and the return spring 304. The teeth of each transmission gear 309 mesh with the teeth of the second lifting plate 307.

[0035] The specific implementation of this embodiment is as follows: When the equipment moves into the pipe, the roller 308, relative to the traveling wheels of the spraying device body 1, will first contact the inner wall of the pipe, and under the action of the gravity of the spraying device body 1, it can push the second lifting plate 307 upward, eventually moving to... Figure 2During the movement of the second lifting plate 307, the transmission gear 309 will rotate counterclockwise. Note that at this time, the limiting gear 301 is still inside the spraying device body 1 and does not mesh with the surface of the transmission gear 309. Therefore, the transmission gear 309 can rotate freely. When the transmission gear 309 rotates, it will drive the adjusting plate 306, the long shaft 310, and the roller 305 to rotate counterclockwise synchronously, so that the roller 305 does not contact the inner wall of the spraying device body 1. After the equipment is in place, the hydraulic rod 312 can be controlled to push the fixing plate 313 and the limiting gear 301 to move to the position where they are in contact with the transmission gear. At the meshing point of 309, it is necessary to ensure that the limiting gear 301 does not mesh with the second lifting plate 307. Under the action of the one-way bearing 315, the limiting gear 301 can only rotate counterclockwise and cannot rotate clockwise. Therefore, when the two rightmost rollers 308 move to the outside of the pipe, due to the height difference between the pipe and the ground, the rollers 308 and the second lifting plate 307 will move downward under the action of the return spring 304. This process will drive the transmission gear 309, the adjusting plate 306 and the roller 305 to rotate clockwise, and the limiting gear 301 to rotate counterclockwise until the roller 307... When roller 305 is in contact with the ground, and the adjusting plate 306 is not completely perpendicular to the ground but has a certain angle difference with the ground, and the right traveling wheel is suspended in the air, part of the gravity of the spraying device body 1 will act on the right roller 305, forcing the roller 305 to return to its original position. However, under the action of the one-way bearing 315 and the limit gear 301, the transmission gear 309 cannot rotate in the opposite direction. Therefore, the roller 305 cannot return to its original position, and the roller 305 can stably provide support for the spraying device body 1 until the left roller 305... It also contacts the ground. At this time, all four traveling wheels in the spraying device body 1 are in a suspended state. After the spraying near the pipe outlet end is completed, the spraying device body 1 can be pulled to move to the next pipe that needs to be sprayed. When entering the next pipe, the two traveling wheels on the left side contact the inner wall of the pipe. Then, the hydraulic rod 312 is controlled to reset, so that the limit gear 301 no longer meshes with the transmission gear 309, and the roller 305 is reset. This can avoid the problem that the pipe wall at the pipe outlet end cannot be sprayed evenly due to the height difference between the pipe and the ground.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant coating spraying device for pressure pipeline production, comprising a spraying device body (1), characterized in that: A positioning mechanism (2) is provided above the body (1) of the spraying device, and an anti-vibration mechanism (3) is provided inside the body (1) of the spraying device. The positioning mechanism (2) includes a limiting unit (21), which is disposed above the spraying device body (1). The limiting unit (21) can limit the distance between the nozzle and the inner wall of the pressure pipe. The positioning mechanism (2) also includes an anti-drift unit (22), which is located above the spraying device body (1). The anti-drift unit (22) can reduce the probability of the coating drifting outside the pipe when it is sprayed near the pipe opening. The anti-vibration mechanism (3) can reduce the impact on the coating thickness when the equipment moves out of the pipe.

2. The anti-corrosion coating spraying device for pressure pipeline production according to claim 1, characterized in that: The limiting unit (21) includes an adjusting frame (2101). Two mounting blocks (2106) are fixedly connected to the upper surface of the adjusting frame (2101). Each mounting block (2106) has an inner wall rotatably connected to a roller (2107). A first drive shaft (2115) is slidably connected inside the adjusting frame (2101). A first bullseye bearing (2108) is embedded inside the first drive shaft (2115). A first lifting plate (2110) is fixedly connected to the outer surface of the first drive shaft (2115). Two first force-bearing springs (2109) are fixedly connected to the upper surface of the first lifting plate (2110) and the inner top wall of the adjusting frame (2101). A rectangular plate (2111) is fixedly connected to the inner wall of the adjusting frame (2101). A first spiral cylinder (2116) is rotatably connected to the inner wall of the rectangular plate (2111). The bottom end of the first drive shaft (2115) passes through the first... The spiral cylinder (2116) has an opening and extends into the inner cavity of the first spiral cylinder (2116). The outer surface of the first drive shaft (2115) is provided with several identical raised strips. The inner wall of the first spiral cylinder (2116) is provided with several identical recessed grooves. The spiral strips on the surface of the first drive shaft (2115) correspond to the spiral grooves opened on the inner wall of the first spiral cylinder (2116). The inner wall of the adjusting frame (2101) is fixedly connected to a circular cylinder (2112). A rotating ring (2117) is provided inside the circular cylinder (2112). The outer surface of the rotating ring (2117) is in contact with the inner wall of the circular cylinder (2112). The surface of the rotating ring (2117) is provided with a through hole. The top end of the rotating ring (2117) is provided with a cylindrical protrusion. The cylindrical protrusion is rotatably connected to the inner wall of the circular cylinder (2112). The bottom end of the first spiral cylinder (2116) is fixedly connected to the top end of the cylindrical protrusion.

3. The anti-corrosion coating spraying device for pressure pipeline production according to claim 2, characterized in that: The output end of the spraying device body (1) is fixedly connected to a first rectangular frame (2102), and a second force spring (2105) is fixedly connected to the inner bottom wall of the first rectangular frame (2102). The top end of the second force spring (2105) is fixedly connected to the bottom surface of the adjustment frame (2101).

4. The anti-corrosion coating spraying device for pressure pipeline production according to claim 3, characterized in that: The output end of the spraying device body (1) is fixedly connected to a hose (2103). One end of the hose (2103) passes through the first rectangular frame (2102) and extends to the outside of the first rectangular frame (2102). One end of the hose (2103) is fixedly connected to the left side of the adjustment frame (2101). Several identical positioning blocks (2104) are fixedly connected to the front of the first rectangular frame (2102). The hose (2103) is disposed in the inner cavity of several positioning blocks (2104).

5. The anti-corrosion coating spraying device for pressure pipeline production according to claim 4, characterized in that: The back of the adjustment frame (2101) is fixedly connected to the mounting frame (2114), and the inner wall of the mounting frame (2114) is fixedly connected to the nozzle (2113). The input end of the nozzle (2113) is fixedly connected to the connecting pipe (2118), and one end of the connecting pipe (2118) is fixedly connected to the right side of the adjustment frame (2101).

6. The anti-corrosion coating spraying device for pressure pipeline production according to claim 2, characterized in that: The anti-scattering unit (22) includes a second rectangular frame (2206), the left side of which is fixedly connected to the right side of the adjusting frame (2101). A second drive shaft (2207) is slidably connected inside the second rectangular frame (2206). A second bullseye bearing (2205) is embedded inside the second drive shaft (2207). A drive plate (2214) is fixedly connected to the bottom end of the second drive shaft (2207). The bottom surface of the drive plate (2214) Two third force-bearing springs (2213) are fixedly connected to the inner bottom wall of the second rectangular frame (2206). A normally closed control button (2212) is fixedly connected to the inner bottom wall of the second rectangular frame (2206). The bottom surface of the transmission plate (2214) is in contact with the trigger end of the normally closed control button (2212). The normally closed control button (2212) is connected in series to the power supply circuit of the walking power mechanism of the spraying device body (1). A shielding component is provided inside the second rectangular frame (2206).

7. The anti-corrosion coating spraying device for pressure pipeline production according to claim 6, characterized in that: The shielding assembly includes a third drive shaft (2209), the top end of which is fixedly connected to the bottom surface of the drive plate (2214). The third drive shaft (2209) is disposed in the inner cavity of one of the third force springs (2213), and the surface of the third drive shaft (2209) is provided with two sets of spiral strips.

8. The anti-corrosion coating spraying device for pressure pipeline production according to claim 7, characterized in that: Two sets of mounting plates (2210) are fixedly connected to the right side of the adjustment frame (2101). Each set of mounting plates (2210) consists of two plates. The inner walls of each pair of mounting plates (2210) are rotatably connected to a second spiral cylinder (2211). The inner wall of each second spiral cylinder (2211) is provided with several identical spiral grooves. Each spiral strip is disposed in the inner cavity of the spiral groove.

9. The anti-corrosion coating spraying device for pressure pipeline production according to claim 8, characterized in that: Each of the second spiral cylinders (2211) has a connecting plate (2208) fixedly connected to its outer surface. A baffle (2202) is fixedly connected to one side of each of the two connecting plates (2208). Two fourth force springs (2204) are fixedly connected to the inner bottom wall of the baffle (2202). An extension plate (2201) is fixedly connected to the top of each of the two fourth force springs (2204). Two third bullseye bearings (2203) are fixedly connected to the inner wall of the extension plate (2201).

10. The anti-corrosion coating spraying device for pressure pipeline production according to claim 1, characterized in that: The anti-vibration mechanism (3) includes two sets of hydraulic rods (312), each set of hydraulic rods (312) has two rods, and each hydraulic rod (312) has a fixed plate (313) fixedly connected to its telescopic end. Each fixed plate (313) has a one-way bearing (315) rotatably connected to its inner wall. The one-way bearing (315) has a short shaft (314) rotatably connected to its inner wall. One end of the short shaft (314) is fixedly connected to a limit gear (301). The bottom surface of the spraying device body (1) has two sets of semicircular plates (311), each set of semicircular plates (311) has two plates. The inner walls of each pair of semicircular plates (311) are rotatably connected to a long shaft (310). The outer surface of each long shaft (310) is fixedly connected to an adjusting plate (306). Each adjusting plate (306) has a long shaft (310) rotatably connected to its inner wall. Two rollers (305) are rotatably connected to the inner wall of the spraying device. A transmission gear (309) is fixedly connected to both ends of each of the long shafts (310). Two square plates (302) are fixedly connected to the front and back of the spraying device body (1). A return spring (304) is fixedly connected to the bottom surface of each square plate (302). A second lifting plate (307) is fixedly connected to the bottom end of each return spring (304). A roller (308) is rotatably connected to the inner wall of each second lifting plate (307). A positioning shaft (303) is fixedly connected to the bottom surface of each square plate (302). Each positioning shaft (303) is located in the inner cavity of the second lifting plate (307) and the return spring (304). The teeth of each transmission gear (309) mesh with the teeth of the second lifting plate (307).

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