Device integrating automatic dehumidification, rust removal and spraying for steel pipe jacking butt joint
By integrating dehumidification, rust removal, and spraying into one device, the problem of low efficiency in corrosion protection of steel pipe jacking weld joints has been solved, realizing automated processing and improving the quality and efficiency of steel pipe jacking joints.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-29
- Publication Date
- 2026-03-17
AI Technical Summary
The existing anti-corrosion treatment of the butt weld of steel pipe jacking is inefficient, and manual operation is unstable, which easily leads to rust residue and insufficient coating adhesion, resulting in a high risk of pipeline leakage.
Design a device that integrates dehumidification, rust removal, and spraying, including a rotor assembly, a rust removal assembly, a drying assembly, and a spraying assembly, to achieve automated processing through rotary shot blasting, hot air drying, and high-pressure spraying.
This improved the processing efficiency and quality of steel pipe jacking, ensured the anti-corrosion treatment effect of the weld area, and reduced labor costs and rust risk.
Smart Images
Figure CN121676820A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of steel pipe jacking construction technology, specifically to a device for steel pipe jacking joints that integrates automatic dehumidification, rust removal, and spraying. Background Technology
[0002] Pipe jacking, as a trenchless underground pipeline laying technology, is widely used in underground engineering projects such as urban water supply, gas transmission, and municipal drainage due to its advantages of minimal impact on surface structures, traffic, and the surrounding environment. Among them, steel pipe jacking, with its high strength and strong resistance to deformation, is increasingly used in long-distance, large-diameter underground pipeline projects. Some projects have a single jacking distance of over 1,000 meters and a maximum diameter of over 3 meters, which places stringent requirements on construction quality and efficiency. The anti-corrosion treatment of the joint of steel pipe jacking is the core link to ensure the overall service life of the pipeline. If the weld and surrounding area at the joint are not properly treated, they are prone to corrosion in complex underground environments such as dampness and acid and alkali corrosion, which can lead to pipeline leakage, safety accidents, and significant economic losses.
[0003] Currently, the corrosion protection of butt welds in steel pipe jacking is generally carried out in a segmented, manual operation mode. First, the weld area to be treated is surface-treated, usually by manually removing rust using a handheld electric wire brush or abrasive wheel, possibly supplemented by a hot air gun for preliminary dehumidification. Then, operators use handheld spraying equipment to apply anti-corrosion coating. This segmented, independent operation mode has low construction efficiency, unstable surface treatment quality, and high labor costs. In addition, the humid environment easily causes technical problems such as rust residue and insufficient coating adhesion. To address these issues, we propose a device for steel pipe jacking butt welding that integrates automatic dehumidification, rust removal, and spraying. Summary of the Invention
[0004] The purpose of this invention is to provide a device for steel pipe jacking that integrates automatic dehumidification, rust removal, and spraying, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for steel pipe jacking and docking that integrates automatic dehumidification, rust removal, and spraying, comprising a device body movable inside the steel pipe, the device body including a device middle cylinder, a rotor assembly provided in the middle of the device middle cylinder, a rust removal assembly provided at the bottom of the rotor assembly, a drying assembly and a spraying assembly provided at the top of the rotor assembly, movable assemblies provided at both ends of the device middle cylinder, a dehumidification assembly and a controller provided on one side of the movable assembly, and a camera module provided on the top of the rotor assembly.
[0006] Preferably, the rotor assembly includes a rotating outer cylinder, which is rotatably mounted in the middle of the inner cylinder of the device via bearings. The camera module is fixedly mounted on the top of the rotating outer cylinder. An internal gear ring is coaxially fixedly mounted on the inner side of the rotating outer cylinder. A drive gear is meshed with the top of the inner side of the internal gear ring. The drive gear is rotatably mounted on the top of the inner cylinder of the device. A worm gear is fixedly mounted on the shaft end of the drive gear. A worm is meshed with the bottom of the worm gear. The worm is rotatably mounted on the top of the inner cylinder of the device. A drive motor is fixedly mounted on the outer side of the inner cylinder of the device near the worm. The drive end of the drive motor and the shaft end of the worm are fixedly mounted.
[0007] Preferably, the rust removal assembly includes a telescopic rod, which is fixedly installed at the bottom of the rotating outer cylinder. A shot blasting nozzle is fixedly installed at the drive end of the telescopic rod, and a feed pipe is fixedly installed at the side end of the shot blasting nozzle. A recovery frame is fixedly installed on the outside of the shot blasting nozzle. The recovery frame includes four recovery support frames connected end to end. A recovery cross groove is opened at the bottom inner side of the recovery support frame. A recovery branch pipe is fixedly installed on the outside of the recovery support frame. Multiple recovery branch pipes are fixedly connected end to end. A recovery main pipe is vertically installed on one of the recovery branch pipes. A guide pipe is movably sleeved on the top outer side of the feed pipe. A recovery outer pipe is movably sleeved on the top outer side of the recovery main pipe. The guide pipe and the recovery outer pipe are fixedly snapped into the bottom of the rotating outer cylinder. Sealing rings are fixedly installed on the top outer sides of both the feed pipe and the recovery main pipe. The sealing rings contact the inner walls of the corresponding guide pipe and recovery outer pipe, respectively.
[0008] Preferably, the rust removal assembly further includes a first inner cylinder and a second inner cylinder. The first inner cylinder is fixedly installed on the outside of the middle cylinder of the device. The feed inlet of the first inner cylinder extends into the middle cylinder of the device and is fixedly installed with a first inner tube. A first outer cylinder is provided on the outside of the first inner cylinder. A first outer tube is fixedly installed on the outside of the first outer cylinder. The end of the first outer tube is fixedly installed at the bottom end of the guide tube. A first sealing rotating component is fixedly installed between the outside of the first inner cylinder and the inside of the first outer cylinder.
[0009] Preferably, the second inner cylinder is fixedly installed on the outside of the middle cylinder of the device, the feed port of the second inner cylinder extends into the middle cylinder of the device and is fixedly installed with a second inner tube, a second outer cylinder is provided on the outside of the second inner cylinder, a second outer tube is fixedly installed on the outside of the second outer cylinder, the end of the second outer tube is fixedly installed at the bottom end of the recovery outer tube, and a second sealing rotating member is fixedly installed between the outside of the second inner cylinder and the inside of the second outer cylinder.
[0010] Preferably, the drying assembly includes a hot air nozzle and a third inner cylinder. The hot air nozzle is fixedly mounted on the top of the rotating outer cylinder, and the air inlet of the hot air nozzle extends into the rotating outer cylinder. The third inner cylinder is fixedly installed on the outside of the middle cylinder of the device. The feed inlet of the third inner cylinder extends into the middle cylinder of the device and is fixedly installed with a third inner tube. A third outer cylinder is provided on the outside of the third inner cylinder. A third outer tube is fixedly installed on the outside of the third outer cylinder. The end of the third outer tube is fixedly installed at the air inlet of the hot air nozzle. A third sealing rotating component is fixedly installed between the outside of the third inner cylinder and the inside of the third outer cylinder.
[0011] Preferably, the spraying assembly includes a high-pressure airless spray head and a fourth inner cylinder. The high-pressure airless spray head is fixedly mounted on the top of the rotating outer cylinder. The inlet of the high-pressure airless spray head extends into the rotating outer cylinder. The fourth inner cylinder is fixedly installed on the outside of the middle cylinder of the device. The inlet of the fourth inner cylinder extends into the middle cylinder of the device and is fixedly installed with a fourth inner tube. A fourth outer cylinder is provided on the outside of the fourth inner cylinder. A fourth outer tube is fixedly installed on the outside of the fourth outer cylinder. The end of the fourth outer tube is fixedly installed at the inlet of the high-pressure airless spray head. A fourth sealing rotating component is fixedly installed between the outside of the fourth inner cylinder and the inside of the fourth outer cylinder.
[0012] Preferably, the outer ends of the first inner tube, the second inner tube, the third inner tube, and the fourth inner tube extend out of the outer end of the inner cylinder of the device.
[0013] Preferably, the moving component includes a mounting base, which is fixedly mounted on the end of the inner cylinder of the device. Four connecting rods arranged in a circular array are fixedly mounted on the outer side of the mounting base. A connecting sleeve rod is movably sleeved on the outer end of each connecting rod. A fastening bolt is threaded onto the inner end of each connecting sleeve rod. The end of the fastening bolt contacts the outer wall of the connecting rod. A U-shaped bracket is fixedly mounted on the outer end of each connecting sleeve rod. Electric wheels are mounted on both ends of the U-shaped bracket. An electric airbag is fixedly mounted in the middle of the U-shaped bracket.
[0014] Preferably, the dehumidification assembly includes a bottom support and a top support, which are respectively fixedly installed on two corresponding connecting rods. A dehumidification inlet is fixedly installed at the bottom of the bottom support, and a dehumidification inlet pipe is fixedly installed at the port of the dehumidification inlet. A dehumidification outlet is fixedly installed at the top of the top support, and a dehumidification outlet pipe is fixedly installed at the port of the dehumidification outlet. A dehumidifier body is fixedly installed on one side of the bottom support. The end of the dehumidification inlet pipe is fixedly installed at the air inlet of the dehumidifier body, and the end of the dehumidification outlet pipe is fixedly installed at the air outlet of the dehumidifier body. The controller is fixedly installed on one side of the top support.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This device can perform rotary fully automatic rust removal, spraying, and drying treatment on the welded joints inside steel pipes, realizing integrated automatic dehumidification, rust removal, and spraying during steel pipe jacking, which greatly improves the efficiency and quality of steel pipe jacking.
[0016] 2. This device, by setting up a rust removal component, performs rotary fully automatic shot blasting rust removal on the welded joints inside the steel pipe. At the same time, it can automatically recover the shot and rust chips after rust removal through a recovery trough.
[0017] 3. The device uses electric wheels to control the movement of the entire device inside the steel pipe by setting up a moving component, and to position the entire device by inflating the electric airbag and contacting the inner wall of the steel pipe.
[0018] 4. This device uses a dehumidification component to draw humid air from the dehumidification inlet into the dehumidifier body for dehumidification and then discharge it through the dehumidification outlet, thereby drying the welded joints inside the steel pipe. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0020] Figure 1 This is a schematic diagram of the structure of the present invention.
[0021] Figure 2 This is a schematic diagram of the structure of the present invention.
[0022] Figure 3 This is a schematic diagram of the structure of the device body in this invention.
[0023] Figure 4 This is a partial structural diagram of the device body in this invention.
[0024] Figure 5 This is a schematic diagram of the structure of the cylinder, rust removal component, drying component and spraying component in the device of the present invention.
[0025] Figure 6 This is a schematic diagram of the drying component in this invention.
[0026] Figure 7 This is a schematic diagram of the spraying assembly in this invention.
[0027] Figure 8 This is a schematic diagram of the rust removal component in this invention.
[0028] Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle.
[0029] Figure 10 This is a partial structural diagram of the rust removal component in this invention.
[0030] Figure 11 This is a schematic diagram of the structural connection between the first inner cylinder and the first outer cylinder in this invention.
[0031] Figure 12 This is a schematic diagram showing the structural connection between the second inner cylinder and the second outer cylinder in this invention.
[0032] Figure 13 This is a schematic diagram showing the structural connection between the cylinder and the moving component in the device of the present invention.
[0033] Figure 14 This is a schematic diagram showing the structural connection between the cylinder and rotor assembly in the device of the present invention.
[0034] Figure 15 For the present invention Figure 14 Enlarged view of point B in the middle.
[0035] Figure 16 This is a schematic diagram showing the structural connection between the moving component and the dehumidification component in this invention.
[0036] In the diagram: 1. Device body; 2. Device middle cylinder; 3. Rotor assembly; 4. Rust removal assembly; 5. Drying assembly; 6. Spraying assembly; 7. Moving assembly; 8. Dehumidifying assembly; 9. Controller; 10. Camera module; 31. Rotating outer cylinder; 32. Internal gear ring; 33. Drive gear; 34. Worm gear; 341. Worm; 35. Drive motor; 41. Telescopic rod; 42. Shot blasting machine nozzle; 421. Feed pipe; 43. Recovery frame; 431. Recovery branch pipe; 432. Recovery main pipe; 44. Material guide outer pipe; 45. Recovery outer pipe; 401. Recovery transverse groove; 402. Sealing ring; 46. First inner cylinder; 461. First outer cylinder; 462. First outer pipe; 463. First sealing rotating component; 464. First inner pipe; 47. Second inner cylinder; 1. Second outer cylinder; 472. Second outer tube; 473. Second sealing rotating component; 474. Second inner tube; 51. Hot air nozzle; 52. Third inner cylinder; 521. Third inner tube; 53. Third outer cylinder; 531. Third outer tube; 54. Third sealing rotating component; 61. High-pressure airless spray head; 62. Fourth inner cylinder; 621. Fourth inner tube; 63. Fourth outer cylinder; 631. Fourth outer tube; 64. Fourth sealing rotating component; 71. Mounting outer seat; 72. Connecting rod; 73. Connecting sleeve rod; 74. U-shaped bracket; 75. Electric wheel; 76. Electric airbag; 77. Fastening bolt; 81. Bottom support; 82. Top support; 83. Dehumidification inlet; 831. Dehumidification inlet pipe; 84. Dehumidification outlet; 841. Dehumidification outlet pipe; 85. Dehumidifier body. Detailed Implementation
[0037] 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.
[0038] Example: Figure 1-16 As shown, the present invention provides a device for steel pipe jacking and docking that integrates automatic dehumidification, rust removal, and spraying. It includes a device body 1 that can move inside the steel pipe. The device body 1 includes a device cylinder 2. A rotor assembly 3 is provided in the middle of the device cylinder 2. A rust removal assembly 4 is provided at the bottom of the rotor assembly 3. A drying assembly 5 and a spraying assembly 6 are provided at the top of the rotor assembly 3. Movable assemblies 7 are provided at both ends of the device cylinder 2. A dehumidification assembly 8 and a controller 9 are provided on one side of the movable assembly 7. A camera module 10 is provided on the top of the rotor assembly 3. By setting the camera module 10, the condition inside the steel pipe can be observed by video, thereby facilitating the device to process the steel pipe jacking.
[0039] The rotor assembly 3 includes a rotating outer cylinder 31, which is rotatably mounted in the middle of the inner cylinder 2 of the device via bearings. The camera module 10 is fixedly mounted on the top of the rotating outer cylinder 31. An internal gear ring 32 is coaxially fixedly mounted on the inner side of the rotating outer cylinder 31. A drive gear 33 is meshed with the top of the inner side of the internal gear ring 32. The drive gear 33 is rotatably mounted on the top of the inner cylinder 2 of the device. A worm gear 34 is fixedly mounted on the shaft end of the drive gear 33. A worm 341 is meshed with the bottom of the worm gear 34. The worm 341 is rotatably mounted on the top of the inner cylinder 2 of the device. A drive motor 35 is fixedly mounted on the outer side of the inner cylinder 2 of the device near the worm 341. The drive end of the drive motor 35 is fixedly mounted on the shaft end of the worm 341. By turning on the drive motor 35, the worm 341 is driven to rotate, thereby controlling the drive gear 33 to drive the internal gear ring 32 to drive the rotating outer cylinder 31 to rotate automatically in the middle of the inner cylinder 2 of the device.
[0040] The rust removal component 4 includes a telescopic rod 41, which is fixedly installed at the bottom of the rotating outer cylinder 31. A shot blasting nozzle 42 is fixedly installed at the drive end of the telescopic rod 41. A feed pipe 421 is fixedly installed at the side end of the shot blasting nozzle 42. A recovery frame 43 is fixedly installed on the outside of the shot blasting nozzle 42. By opening the telescopic rod 41, the shot blasting nozzle 42 and the recovery frame 43 are driven to rise and fall, thereby adjusting the distance between the shot blasting nozzle 42 and the recovery frame 43 and the inner wall of the steel pipe, so that the shot blasting nozzle 42 and the recovery frame 43 are aligned and close to the welded interface of the inner wall of the steel pipe. The recovery frame 43 includes four recovery support frames that are connected end to end. A recovery cross groove 401 is opened at the bottom of the inner side of the recovery support frame. A recovery branch pipe 431 is fixedly installed on the outside of the recovery support frame. Multiple recovery branch pipes 431 are fixedly connected end to end and interconnected. A recovery main pipe 432 is vertically installed on one of the recovery branch pipes 431. A guide pipe 44 is movably sleeved on the top outer side of the feed pipe 421, and a recovery pipe 45 is movably sleeved on the top outer side of the recovery main pipe 432. The guide pipe 44 and the recovery pipe 45 are fixedly snapped into the bottom of the rotating outer cylinder 31. A sealing ring 402 is fixedly installed on the top outer side of both the feed pipe 421 and the recovery main pipe 432. The sealing ring 402 contacts the inner wall of the corresponding guide pipe 44 and the recovery pipe 45 respectively. When the shot blasting machine nozzle 42 and the recovery main frame 43 are raised and lowered, the feed pipe 421 slides in a sealed manner in the guide pipe 44, and the recovery main pipe 432 slides in a sealed manner in the recovery pipe 45.
[0041] The rust removal assembly 4 also includes a first inner cylinder 46 and a second inner cylinder 47. The first inner cylinder 46 is fixedly installed on the outside of the middle cylinder 2 of the device. The feed port of the first inner cylinder 46 extends into the middle cylinder 2 of the device and is fixedly installed with a first inner tube 464. A first outer cylinder 461 is provided on the outside of the first inner cylinder 46. A first outer tube 462 is fixedly installed on the outside of the first outer cylinder 461. The end of the first outer tube 462 is fixedly installed at the bottom end of the guide tube 44. A first sealing rotating member 463 is fixedly installed between the outside of the first inner cylinder 46 and the inside of the first outer cylinder 461. By setting the first sealing rotating member 463, rotating the outer cylinder 31 drives the shot blasting machine nozzle 42 and the recovery frame 43 to rotate, and at the same time drives the first outer cylinder 461 to rotate, and seals the first inner cylinder 46 and the first outer cylinder 461 to prevent shot leakage.
[0042] The second inner cylinder 47 is fixedly installed on the outside of the middle cylinder 2 of the device. The feed port of the second inner cylinder 47 extends into the middle cylinder 2 of the device and is fixedly installed with the second inner tube 474. The outer side of the second inner cylinder 47 is provided with the second outer cylinder 471. The outer side of the second outer cylinder 471 is fixedly installed with the second outer tube 472. The end of the second outer tube 472 is fixedly installed at the bottom end of the recovery outer tube 45. The second sealing rotating member 473 is fixedly installed between the outer side of the second inner cylinder 47 and the inner side of the second outer cylinder 471. By setting the second sealing rotating member 473, the second inner cylinder 47 and the second outer cylinder 471 are sealed to prevent the leakage of the recovered pellets.
[0043] The drying assembly 5 includes a hot air nozzle 51 and a third inner cylinder 52. The hot air nozzle 51 is fixedly mounted on the top of the rotating outer cylinder 31. The hot air nozzle 51 is aligned with the welded interface on the inner wall of the steel pipe. The air inlet of the hot air nozzle 51 extends into the rotating outer cylinder 31. The third inner cylinder 52 is fixedly installed on the outside of the middle cylinder 2 of the device. The feed inlet of the third inner cylinder 52 extends into the middle cylinder 2 of the device and is fixedly installed with a third inner tube 521. A third outer cylinder 53 is provided on the outside of the third inner cylinder 52. A third outer tube 531 is fixedly installed on the outside of the third outer cylinder 53. The end of the third outer tube 531 is fixedly installed at the air inlet of the hot air nozzle 51. A third sealing rotating member 54 is fixedly installed between the outside of the third inner cylinder 52 and the inside of the third outer cylinder 53. By setting the third sealing rotating member 54, the rotation of the rotating outer cylinder 31 drives the hot air nozzle 51 to rotate, and at the same time drives the third outer cylinder 53 to rotate, and seals the third inner cylinder 52 and the third outer cylinder 53 to prevent hot air leakage. The spraying assembly 6 includes a high-pressure airless spray head 61 and a fourth inner cylinder 62. The high-pressure airless spray head 61 is fixedly mounted on the top of the rotating outer cylinder 31. The nozzle of the high-pressure airless spray head 61 is aligned with the welded joint on the inner wall of the steel pipe. The inlet of the high-pressure airless spray head 61 extends into the rotating outer cylinder 31. The fourth inner cylinder 62 is fixedly installed on the outside of the middle cylinder 2 of the device. The inlet of the fourth inner cylinder 62 extends into the middle cylinder 2 of the device and is fixedly installed with a fourth inner tube 621. A fourth outer cylinder 63 is provided on the outside of the fourth inner cylinder 62. A fourth outer tube 631 is fixedly installed on the outer side of the fourth outer cylinder 63. The end of the fourth outer tube 631 is fixedly installed at the inlet of the high-pressure airless spray head 61. A fourth sealing rotating component 64 is fixedly installed between the outer side of the fourth inner cylinder 62 and the inner side of the fourth outer cylinder 63. By setting the fourth sealing rotating component 64, rotating the outer cylinder 31 will drive the high-pressure airless spray head 61 to rotate, and at the same time drive the fourth outer cylinder 63 to rotate, thus sealing the fourth inner cylinder 62 and the fourth outer cylinder 63 to prevent the spray paint from leaking.
[0044] The outer ends of the first inner tube 464, the second inner tube 474, the third inner tube 521, and the fourth inner tube 621 extend out of the outer end of the middle cylinder 2 of the device. In use, the outer end of the first inner tube 464 is connected to the shot output port of the external shot blasting machine body, the outer end of the second inner tube 474 is connected to the suction port of the external suction pump, the outer end of the third inner tube 521 is connected to the air outlet of the external hot air blower, and the outer end of the fourth inner tube 621 is connected to the output port of the external spraying machine.
[0045] The moving component 7 includes an outer mounting base 71, which is fixedly installed at the end of the inner cylinder 2 of the device. Four connecting rods 72 arranged in a circular array are fixedly installed on the outer side of the outer mounting base 71. Connecting sleeve rods 73 are movably sleeved on the outer ends of the connecting rods 72 to facilitate sliding of the connecting sleeve rods 73. Fastening bolts 77 are threaded on the inner ends of the connecting sleeve rods 73. The ends of the fastening bolts 77 contact the outer wall of the connecting rods 72 to fix the connecting rods 72 and the connecting sleeve rods 73. A U-shaped bracket 74 is fixedly installed on the outer end of the connecting sleeve rods 73. Electric wheels 75 are installed on both ends of the U-shaped bracket 74 so that the electric wheels 75 contact the inner wall of the steel pipe. The electric wheels 75 are used to control the movement of the entire device inside the steel pipe. An electric airbag 76 is fixedly installed in the middle of the U-shaped bracket 74 so that the electric airbag 76 inflates and contacts the inner wall of the steel pipe to position the entire device.
[0046] The dehumidification assembly 8 includes a bottom support 81 and a top support 82. The bottom support 81 and the top support 82 are respectively fixedly installed on two corresponding connecting rods 72. A dehumidification inlet 83 is fixedly installed at the bottom of the bottom support 81, and a dehumidification inlet pipe 831 is fixedly installed at the port of the dehumidification inlet 83. A dehumidification outlet 84 is fixedly installed at the top of the top support 82, and a dehumidification outlet pipe 841 is fixedly installed at the port of the dehumidification outlet 84. A dehumidifier body 85 is fixedly installed on one side of the bottom support 81. The end of the dehumidification inlet pipe 831 is fixedly installed at the air inlet of the dehumidifier body 85, and the end of the dehumidification outlet pipe 841 is fixedly installed at the air outlet of the dehumidifier body 85. A controller 9 is fixedly installed on one side of the top support 82. When the dehumidifier body 85 is turned on, the humid air at the dehumidification inlet 83 is drawn into the dehumidifier body 85 for dehumidification and then discharged through the dehumidification outlet 84, thereby drying the welded joint inside the steel pipe.
[0047] Working principle: First, adjust the spacing of multiple electric wheels 75 in the moving component 7 according to the inner diameter of the steel pipe jacking pipe. Then, fix the connecting rod 72 and the connecting rod 73 by sliding the connecting sleeve 73 and using fastening bolts 77 to make the electric wheels 75 contact the inner wall of the steel pipe jacking pipe and make the cylinder 2 in the device and the steel pipe jacking pipe coaxial. Subsequently, the outer end of the first inner tube 464 is connected to the shot output port of the external shot blasting machine body, the outer end of the second inner tube 474 is connected to the suction port of the external suction pump, the outer end of the third inner tube 521 is connected to the air outlet of the external hot air blower, and the outer end of the fourth inner tube 621 is connected to the output port of the external spraying machine. Subsequently, the entire device is placed inside the top of the steel pipe. Using the electric wheel 75, the entire device is moved inside the steel pipe. The camera module 10 is used to observe the situation inside the steel pipe until the shot blasting machine nozzle 42, hot air nozzle 51, and high-pressure airless spray head 61 are moved to the position of the steel pipe weld joint. The shot blasting machine nozzle 42, hot air nozzle 51, and high-pressure airless spray head 61 are aligned with the position of the steel pipe weld joint. Then, the electric airbag 76 is inflated and contacts the inner wall of the steel pipe to position the entire device and increase its stability. Then, the dehumidifier body 85 is turned on, and the humid air at the dehumidification inlet 83 is drawn into the dehumidifier body 85 for dehumidification and then discharged through the dehumidification outlet 84, thereby automatically dehumidifying and drying the welded joint inside the steel pipe. Subsequently, the telescopic rod 41 is opened to drive the shot blasting machine nozzle 42 and the recovery frame 43 to slide, so that the shot blasting machine nozzle 42 and the recovery frame 43 are close to the welded joint on the inner wall of the steel pipe. At this time, the feed pipe 421 slides in a sealed manner in the guide pipe 44, and the recovery frame 432 slides in a sealed manner in the recovery pipe 45. Subsequently, the external shot blasting machine body and suction pump are turned on, creating a negative pressure at the recovery trough 401. The shot is introduced into the shot blasting nozzle 42 and discharged to automatically remove rust from the welded joints inside the steel pipe. At the same time, the drive motor 35 is turned on to drive the worm gear 341 to rotate the worm wheel 34, thereby controlling the drive gear 33 to drive the internal gear ring 32 to rotate the outer cylinder 31 in the middle of the inner cylinder 2 of the device. This drives the shot blasting nozzle 42 to rotate synchronously, performing a rotary, fully automatic rust removal treatment on the welded joints inside the steel pipe. Meanwhile, the shot and rust chips after rust removal are automatically recovered through the recovery trough 401. After rust removal is completed, the external spraying machine is turned on, the spraying material is introduced into the high-pressure airless spray head 61 and sprayed out under high pressure. At the same time, the outer cylinder 31 rotates automatically in the middle of the inner cylinder 2 of the device, driving the high-pressure airless spray head 61 to rotate synchronously, so as to perform a rotary full automatic spraying treatment on the welded joint inside the steel pipe. While the spraying process is underway, an external hot air blower is turned on, and hot air is introduced into the hot air nozzle 51 and blown out. At the same time, the outer cylinder 31 rotates automatically in the middle of the inner cylinder 2 of the device, which drives the hot air nozzle 51 to rotate synchronously. Then, the spraying position of the welded joint inside the steel pipe is subjected to a rotary fully automatic drying process to increase the adhesion of the coating. This enables integrated automatic dehumidification, rust removal, and spraying during steel pipe jacking, greatly improving the efficiency and quality of steel pipe jacking.
[0048] 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 device for steel pipe jacking and docking that integrates automatic dehumidification, rust removal, and spraying, comprising a device body (1) movable inside the steel pipe, characterized in that: The device body (1) includes a device cylinder (2), a rotor assembly (3) is provided in the middle of the device cylinder (2), a rust removal assembly (4) is provided at the bottom of the rotor assembly (3), a drying assembly (5) and a spraying assembly (6) are provided at the top of the rotor assembly (3), a moving assembly (7) is provided at both ends of the device cylinder (2), a dehumidification assembly (8) and a controller (9) are provided on one side of the moving assembly (7), and a camera module (10) is provided at the top of the rotor assembly (3).
2. The device for steel pipe jacking jointing that integrates automatic dehumidification, rust removal, and spraying as described in claim 1, characterized in that: The rotor assembly (3) includes a rotating outer cylinder (31), which is rotatably mounted in the middle of the device's inner cylinder (2) via bearings. The camera module (10) is fixedly mounted on the top of the rotating outer cylinder (31). An internal gear ring (32) is coaxially fixedly mounted on the inner side of the rotating outer cylinder (31). A drive gear (33) is meshed with the top of the inner side of the internal gear ring (32). The drive gear (33) is rotatably mounted on the top of the device's inner cylinder (2). A worm gear (34) is fixedly mounted on the shaft end of the drive gear (33). A worm (341) is meshed with the bottom of the worm gear (34). The worm (341) is rotatably mounted on the top of the device's inner cylinder (2). A drive motor (35) is fixedly mounted on the outer side of the device's inner cylinder (2) near the worm (341). The drive end of the drive motor (35) and the shaft end of the worm (341) are fixedly mounted.
3. The device for steel pipe jacking jointing that integrates automatic dehumidification, rust removal, and spraying as described in claim 2, characterized in that: The rust removal assembly (4) includes a telescopic rod (41), which is fixedly installed at the bottom of the rotating outer cylinder (31). A shot blasting nozzle (42) is fixedly installed at the drive end of the telescopic rod (41). A feed pipe (421) is fixedly installed at the side end of the shot blasting nozzle (42). A recovery frame (43) is fixedly installed on the outside of the shot blasting nozzle (42). The recovery frame (43) includes four recovery support frames connected end to end. A recovery cross groove (401) is opened at the bottom of the inner side of the recovery support frame. A recovery branch pipe (431) is fixedly installed on the outside of the recovery support frame. Multiple recovery branch pipes (431) are connected. 31) The ends are fixedly connected. A recovery main pipe (432) is vertically installed on one of the recovery branch pipes (431). A guide pipe (44) is movably sleeved on the top of the outer side of the feed pipe (421). A recovery outer pipe (45) is movably sleeved on the top of the outer side of the recovery main pipe (432). The guide pipe (44) and the recovery outer pipe (45) are fixedly clamped to the bottom of the rotating outer cylinder (31). A sealing ring (402) is fixedly installed on the top of the outer side of both the feed pipe (421) and the recovery main pipe (432). The sealing ring (402) contacts the inner wall of the corresponding guide pipe (44) and the recovery outer pipe (45).
4. The device for steel pipe jacking jointing that integrates automatic dehumidification, rust removal, and spraying as described in claim 3, characterized in that: The rust removal assembly (4) further includes a first inner cylinder (46) and a second inner cylinder (47). The first inner cylinder (46) is fixedly installed on the outside of the middle cylinder (2) of the device. The feed port of the first inner cylinder (46) extends into the middle cylinder (2) of the device and is fixedly installed with a first inner tube (464). A first outer cylinder (461) is provided on the outside of the first inner cylinder (46). A first outer tube (462) is fixedly installed on the outside of the first outer cylinder (461). The end of the first outer tube (462) is fixedly installed at the bottom end of the guide tube (44). A first sealing rotating member (463) is fixedly installed between the outside of the first inner cylinder (46) and the inside of the first outer cylinder (461).
5. The device for steel pipe jacking jointing that integrates automatic dehumidification, rust removal, and spraying according to claim 4, characterized in that: The second inner cylinder (47) is fixedly installed on the outside of the middle cylinder (2) of the device. The feed port of the second inner cylinder (47) extends into the middle cylinder (2) of the device and is fixedly installed with a second inner tube (474). The second outer cylinder (471) is provided on the outside of the second inner cylinder (47). The second outer tube (472) is fixedly installed on the outside of the second outer cylinder (471). The end of the second outer tube (472) is fixedly installed at the bottom end of the recovery outer tube (45). A second sealing rotating component (473) is fixedly installed between the outside of the second inner cylinder (47) and the inside of the second outer cylinder (471).
6. The device for steel pipe jacking jointing that integrates automatic dehumidification, rust removal, and spraying according to claim 5, characterized in that: The drying assembly (5) includes a hot air nozzle (51) and a third inner cylinder (52). The hot air nozzle (51) is fixedly mounted on the top of the rotating outer cylinder (31). The air inlet of the hot air nozzle (51) extends into the rotating outer cylinder (31). The third inner cylinder (52) is fixedly installed on the outside of the middle cylinder (2) of the device. The feed inlet of the third inner cylinder (52) extends into the middle cylinder (2) of the device and is fixedly installed with a third inner tube (521). A third outer cylinder (53) is provided on the outside of the third inner cylinder (52). A third outer tube (531) is fixedly installed on the outside of the third outer cylinder (53). The end of the third outer tube (531) is fixedly installed at the air inlet of the hot air nozzle (51). A third sealing rotating component (54) is fixedly installed between the outside of the third inner cylinder (52) and the inside of the third outer cylinder (53).
7. The device for steel pipe jacking joint assembly that integrates automatic dehumidification, rust removal, and spraying according to claim 6, characterized in that: The spraying assembly (6) includes a high-pressure airless spray head (61) and a fourth inner cylinder (62). The high-pressure airless spray head (61) is fixedly mounted on the top of the rotating outer cylinder (31). The feed port of the high-pressure airless spray head (61) extends into the rotating outer cylinder (31). The fourth inner cylinder (62) is fixedly installed on the outside of the device's middle cylinder (2). The feed port of the fourth inner cylinder (62) extends into the device's middle cylinder (2) and is fixedly installed with a fourth inner tube (621). A fourth outer cylinder (63) is provided on the outside of the fourth inner cylinder (62). A fourth outer tube (631) is fixedly installed on the outside of the fourth outer cylinder (63). The end of the fourth outer tube (631) is fixedly installed at the feed port of the high-pressure airless spray head (61). A fourth sealing rotating component (64) is fixedly installed between the outside of the fourth inner cylinder (62) and the inside of the fourth outer cylinder (63).
8. The device for steel pipe jacking jointing that integrates automatic dehumidification, rust removal, and spraying according to claim 7, characterized in that: The outer ends of the first inner tube (464), the second inner tube (474), the third inner tube (521) and the fourth inner tube (621) extend out of the outer end of the middle cylinder (2) of the device.
9. The device for steel pipe jacking jointing that integrates automatic dehumidification, rust removal, and spraying according to claim 1, characterized in that: The moving component (7) includes an outer mounting base (71), which is fixedly mounted on the end of the middle cylinder (2) of the device. Four connecting rods (72) arranged in a ring array are fixedly mounted on the outer side of the outer mounting base (71). A connecting sleeve rod (73) is movably sleeved on the outer end of the connecting rod (72). A fastening bolt (77) is threaded on the inner end of the connecting sleeve rod (73). The end of the fastening bolt (77) contacts the outer wall of the connecting rod (72). A U-shaped bracket (74) is fixedly mounted on the outer end of the connecting sleeve rod (73). Electric wheels (75) are mounted on both ends of the U-shaped bracket (74). An electric airbag (76) is fixedly mounted in the middle of the U-shaped bracket (74).
10. The device for steel pipe jacking jointing that integrates automatic dehumidification, rust removal, and spraying according to claim 9, characterized in that: The dehumidification assembly (8) includes a bottom support (81) and a top support (82). The bottom support (81) and the top support (82) are respectively fixedly installed on two corresponding connecting rods (72). A dehumidification inlet (83) is fixedly installed at the bottom of the bottom support (81). A dehumidification inlet pipe (831) is fixedly installed at the port of the dehumidification inlet (83). A dehumidification outlet (84) is fixedly installed at the top of the top support (82). A dehumidification outlet pipe (841) is fixedly installed at the port of the dehumidification outlet (84). A dehumidifier body (85) is fixedly installed on one side of the bottom support (81). The end of the dehumidification inlet pipe (831) is fixedly installed at the air inlet of the dehumidifier body (85). The end of the dehumidification outlet pipe (841) is fixedly installed at the air outlet of the dehumidifier body (85). The controller (9) is fixedly installed on one side of the top support (82).