A concrete anti-corrosion device in saline soil environment

Abstract

The present invention discloses a concrete anti-corrosion device for use in a saline soil environment, which relates to the technical field of concrete anti-corrosion. The device comprises a concrete pipe, wherein a spraying mechanism for spraying an anti-corrosion coating is provided inside the concrete pipe; an adjustment mechanism for controlling the spraying range is provided at the end of the spraying mechanism; a speed change mechanism is provided between the spraying mechanism and the adjustment mechanism; the concrete pipe is mounted on top of the rotating mechanism; the rotating mechanism drives the concrete pipe to rotate, and the spraying mechanism moves along the interior of the concrete pipe to spray the anti-corrosion coating on the inner wall of the concrete pipe. At the same time, the speed change mechanism drives the adjustment mechanism to operate synchronously according to changes in the diameter of the concrete pipe. The concrete anti-corrosion device disclosed by the present invention for use in a saline soil environment has the effect of being able to adaptively adjust the spraying range of the anti-corrosion coating according to the inner wall of the concrete pipe, and efficiently maintain the spraying quality.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete anti-corrosion, and in particular to concrete anti-corrosion equipment in a saline soil environment. Background Art

[0002] Concrete pipes are pipes made of concrete or reinforced concrete, used to transport fluids such as water, oil and gas. They can be divided into four types: plain concrete pipes, ordinary reinforced concrete pipes, self-stressed reinforced concrete pipes and prestressed concrete pipes. They are used to transport fluids such as water, oil and gas. The interface types include cement mortar tape interface, wire mesh cement mortar tape interface, cement mortar socket and rubber ring socket, etc.

[0003] In existing infrastructure projects, when concrete pipes are used in saline soil environments, the service life of concrete pipes that have been eroded by salt for a long time will be greatly reduced. Therefore, it is necessary to carry out anti-corrosion treatment on the erected concrete pipes in advance. Specifically, a sprayer is used to move horizontally along the inner wall of the concrete pipe, spraying an anti-corrosion coating on the inner wall of the concrete pipe while moving. However, during actual operation, this sprayer cannot automatically control the spraying range according to the concrete pipes with different inner diameters, resulting in a decrease in the spraying efficiency of concrete pipes with larger inner diameters, and the paint adhered to the inner wall of the concrete pipe will sink along the inner wall of the pipe due to its own gravity, thereby affecting the uniformity of the paint on the inner wall of the concrete pipe after solidification. Summary of the Invention

[0004] The present invention discloses a concrete anti-corrosion device in a saline soil environment, aiming to solve the technical problem that the existing concrete pipe spraying equipment cannot automatically control the spraying range according to the change of the inner diameter of the concrete pipe during actual operation, which affects the uniformity and efficiency of the entire pipe spraying and has usage limitations.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A concrete anti-corrosion device for use in a saline soil environment comprises a concrete pipe, wherein a spraying mechanism for spraying an anti-corrosion coating is provided inside the concrete pipe, wherein the spraying mechanism comprises a shaft disposed inside the concrete pipe, a drive device being fixedly mounted on one end of the shaft, and a spraying rod being mounted on an output end of the drive device;

[0007] The end of the spraying mechanism is provided with an adjustment mechanism for controlling the spraying range, the adjustment mechanism includes a bracket slidably sleeved on the outside of the spray rod, a universal wheel is rotatably mounted on the bottom of the bracket, and a connecting rod is sleeved on the outside of the spray rod;

[0008] A speed change mechanism is provided between the spray mechanism and the adjustment mechanism, the speed change mechanism comprising a speed change plate rotatably mounted on the top of the bracket, a first type of thread groove is provided on the outer side of the spray rod, the speed change plate is threadedly connected to the first type of thread groove, a speed change ring is rotatably mounted on the top of the connecting rod, a second type of thread groove is further provided on the outer side of the spray rod, the speed change ring is threadedly connected to the second type of thread groove;

[0009] The concrete pipe is mounted on the top of the rotating mechanism;

[0010] The concrete pipe is driven to rotate by the rotating mechanism, and the spraying mechanism moves along the inside of the concrete pipe to spray the inner wall of the concrete pipe with an anti-corrosion coating. At the same time, according to the change in the diameter of the concrete pipe, the speed change mechanism drives the adjustment mechanism to operate synchronously, thereby adaptively adjusting the spraying range of the spraying mechanism.

[0011] A rotating mechanism is provided to drive the erected concrete pipe to rotate, and at the same time a spraying mechanism moves inside the concrete pipe. The rotation of the rotating mechanism cooperates with the spraying mechanism to spray the inner wall of the concrete pipe, thereby preventing the anti-corrosion coating on the inner wall of the concrete pipe from sinking, thereby improving the quality of the anti-corrosion processing of the concrete pipe by this equipment, and a speed change mechanism and an adjustment mechanism are additionally provided at the end of the spraying mechanism. When it is necessary to spray concrete pipes with different inner diameters, the speed change mechanism will drive the adjustment mechanism to operate synchronously, thereby adaptively adjusting the spraying range of the spraying mechanism to maintain the uniformity of the coating on the inner wall of the concrete pipe, thereby improving the functionality of this equipment.

[0012] In a preferred embodiment, the spraying mechanism further includes a material guide tube rotatably mounted on the other end of the shaft rod, a wheel frame is slidably sleeved on the outer side of the shaft rod, the wheel frame is squeezed and contacted with the inner wall of the concrete pipe, and a turning handle is rotatably mounted on the end of the wheel frame, the turning handle is threadably connected to the shaft rod through a first thread groove, and the first thread groove is opened on the outer side of one end of the shaft rod.

[0013] By providing a wheel frame structure that is slidably sleeved on the outside of the shaft, as the user turns the handle, the wheel frame loses the restriction of the first thread groove. At this time, the wheel frame located inside the concrete pipe will adaptively expand and contract according to the inner diameter of the concrete pipe, thereby matching the inner diameter of the concrete pipe, greatly improving the functionality and perfection of traditional equipment.

[0014] In a preferred embodiment, the adjustment mechanism further includes a sleeve sleeved on the end of the spray rod, the bottom of the sleeve is slidably connected to a sieve rubber disc, the bottom of the connecting rod is fixedly connected to a cage, and the cage is in extrusion contact with the top of the sieve rubber disc.

[0015] By arranging a sleeve structure with a built-in sieve rubber disc at the end of the spray rod of traditional spraying equipment, when the inner diameter of the concrete pipe changes, the bracket in contact with the pipe wall will move vertically along the outer side of the spray rod, and while moving, it will synchronously squeeze the connecting rod, causing the connecting rod to drive the cage to move synchronously and squeeze the sieve rubber disc, causing the sieve rubber disc to adaptively convex outward, cooperating with the spraying of anti-corrosion paint by the spray rod, thereby changing the spray range of the paint, thereby improving the efficiency of this equipment.

[0016] In a preferred solution, the speed change mechanism further includes a transmission rod connected between the speed change plate and the speed change ring, and the top of the transmission rod slides through a through opening on the surface of the speed change plate.

[0017] By setting a speed change plate to match the first-class thread groove and a speed change ring to match the second-class thread groove, and then using a transmission rod to connect the speed change plate and the speed change ring, the pitch ratio of the first-class thread groove and the second-class thread groove is used to adjust the relative movement speed between the bracket and the cage to ensure the perfect and reasonable operation of this equipment.

[0018] In a preferred solution, the rotating mechanism includes an electrically controlled rotating seat mounted below both ends of the concrete pipe, and the two electrically controlled rotating seats are slidably mounted together on the top of an electrically controlled guide rail, which is fixed on the ground.

[0019] By providing an electric-controlled rotating seat structure that is slidably installed on the top of the electric-controlled guide rail, the distance between the two electric-controlled rotating seats is adjusted according to the length of the concrete pipe, and then the electric-controlled rotating seat is controlled to drive the concrete pipe to rotate, thereby cooperating with the operation of the spraying mechanism to ensure the uniformity of the paint during spraying.

[0020] In a preferred embodiment, the driving device includes a casing fixedly mounted on the end of the shaft, the spray rod is rotatably mounted inside the casing and is through-connected to the shaft, a motor is fixedly mounted on the outside of the casing, the output end of the motor horizontally penetrates into the interior of the casing, and a transmission gear set is provided between the output end of the motor and the spray rod.

[0021] By providing a transmission gear set driven by a motor, the transmission gear set is used to drive the spray rod to rotate around the machine casing, thereby spraying the inner wall of the concrete pipe, ensuring the rationality of the operation of the equipment.

[0022] From the above, it can be seen that the concrete anti-corrosion equipment in a saline soil environment provided by the present invention has the following technical effects.

[0023] First, by providing a wheel frame structure that is slidably sleeved on the outside of the shaft, as the user turns the handle, the wheel frame loses the restriction of the first thread groove. At this time, the wheel frame located inside the concrete pipe will be pushed by the spring according to the inner diameter of the concrete pipe and perform an adaptive telescopic movement, thereby adaptively matching the inner diameter of the concrete pipe, moving along the inside of the concrete pipe and spraying an anti-corrosion coating on the concrete pipe through the spray rod. In conjunction with an additional electrically controlled rotating seat mounted on the bottom of the concrete pipe, the rotation direction of the spray rod is opposite to that of the electrically controlled rotating seat, thereby preventing the paint sprayed on the inner wall of the concrete pipe from sinking due to its own weight, ensuring the uniformity of the coating on the inner wall of the concrete pipe, and improving the quality of the finished product constructed by this equipment.

[0024] Secondly, by additionally providing a sleeve structure with a built-in sieve rubber disc at the end of the spray rod structure of the spraying equipment, when the inner diameter of the concrete pipe changes, the bracket in contact with the pipe wall will adaptively move along the outer side of the spray rod, and while moving, it will synchronously squeeze the connecting rod, causing the connecting rod to drive the cage to move synchronously and squeeze the sieve rubber disc. The moving stroke of the bracket matches the cage, causing the sieve rubber disc to adaptively convex outward, thereby matching the change in the inner diameter of the concrete pipe, adaptively changing the spraying range and spraying amount of the paint, and improving the working efficiency of the equipment.

[0025] Third: by arranging a speed change plate with a first-class thread groove on the top of the bracket and a speed change ring with a second-class thread groove on the outside of the spray rod, and then using a transmission rod to connect the speed change plate and the speed change ring, the differential speed change of the adjustment is achieved through the pitch ratio of the first-class thread groove and the second-class thread groove to ensure that the transmission rod moves in a large range while the cage is deformed in a small range, thereby ensuring the rationality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure proposed by the present invention.

[0027] Figure 2 This is a schematic diagram of the shaft rod structure proposed in the present invention.

[0028] Figure 3 This is a schematic diagram of the driving device proposed in the present invention in a separated state.

[0029] Figure 4 This is a cross-sectional view of the casing structure proposed by the present invention.

[0030] Figure 5 This is a cross-sectional view of the sleeve structure proposed in the present invention.

[0031] Figure 6 The present invention proposes Figure 5 A magnified view of the structure at point A in the middle.

[0032] Figure 7 This is a schematic diagram of the spray boom structure proposed in the present invention.

[0033] Figure 8 This is an exploded view of the transmission rod structure proposed by the present invention.

[0034] Figure 9 The present invention proposes Figure 8 A magnified view of the structure at point B.

[0035] Figure 10 It is a schematic diagram of the spraying state of the present invention.

[0036] Figure 11 This is a schematic diagram of the spraying state of a large inner diameter concrete pipe according to the present invention.

[0037] Figure 12 This is a schematic diagram of the normal spraying state of the mesh rubber disc proposed by the present invention.

[0038] Figure 13 This is a schematic diagram of the spraying state of the sieve-hole rubber disc proposed in the present invention on a large inner diameter concrete pipe.

[0039] Figure 14 This is another structural schematic diagram of the bracket proposed by the present invention.

[0040] Figure 15 The present invention proposes Figure 8 Enlarged view of the structure at point C in the middle.

[0041] Figure: 1. Concrete pipe; 2. Spraying mechanism; 201. Shaft; 202. Drive unit; 2021. Housing; 2022. Motor; 2023. Transmission gear set; 203. Spray rod; 204. Material guide pipe; 205. Wheel frame; 206. Turning handle; 207. First thread groove; 208. First spring; 209. Adapter; 3. Adjustment mechanism; 301. Bracket; 302. Universal wheel; 303 , sleeve; 304, sieve rubber disc; 305, connecting rod; 306, cage; 307, second spring; 308, pressure sensing module; 4, speed change mechanism; 401, speed change plate; 402, type I thread groove; 403, speed change ring; 404, type II thread groove; 405, transmission rod; 406, second thread groove; 407, through port; 5, rotating mechanism; 501, electric control rotating seat; 502, electric control guide rail. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] The present invention discloses a concrete anti-corrosion device in a saline soil environment, which is mainly used in the scenario of spraying anti-corrosion coating on the inner wall of a concrete pipe.

[0044] Reference Figures 1 to 15 A concrete anti-corrosion device for use in a saline soil environment includes a concrete pipe 1, wherein a spraying mechanism 2 for spraying an anti-corrosion coating is provided inside the concrete pipe 1. The spraying mechanism 2 includes a shaft 201 disposed inside the concrete pipe 1, a driving device 202 being fixedly mounted on one end of the shaft 201, and a spraying rod 203 being mounted on the output end of the driving device 202.

[0045] The end of the spraying mechanism 2 is provided with an adjustment mechanism 3 for controlling the spraying range. The adjustment mechanism 3 includes a bracket 301 slidably sleeved on the outside of the spray rod 203. A universal wheel 302 is rotatably mounted on the bottom of the bracket 301. A connecting rod 305 is sleeved on the outside of the spray rod 203.

[0046] A speed change mechanism 4 is provided between the spray mechanism 2 and the adjustment mechanism 3. The speed change mechanism 4 includes a speed change plate 401 rotatably mounted on the top of the bracket 301. A first-class thread groove 402 is provided on the outer side of the spray rod 203. The speed change plate 401 is threadedly connected to the first-class thread groove 402. A speed change ring 403 is rotatably mounted on the top of the connecting rod 305. A second-class thread groove 404 is also provided on the outer side of the spray rod 203. The speed change ring 403 is threadedly connected to the second-class thread groove 404.

[0047] The concrete pipe 1 is mounted on top of the rotating mechanism 5;

[0048] The concrete pipe 1 is driven to rotate by the rotating mechanism 5, and the spraying mechanism 2 moves along the inside of the concrete pipe 1 to spray the inner wall of the concrete pipe 1 with an anti-corrosion coating. At the same time, according to the change in the diameter of the concrete pipe 1, the speed change mechanism 4 will drive the adjustment mechanism 3 to operate synchronously, thereby adaptively adjusting the spraying range of the spraying mechanism 2.

[0049] In this embodiment: workers use lifting equipment to lift the concrete pipe 1 to the top of the rotating mechanism 5, and at the same time place the spraying mechanism 2 at one end of the interior of the concrete pipe 1, and move the spraying mechanism 2 to the other end of the concrete pipe 1. After that, the workers start the entire equipment, and the rotating mechanism 5 drives the concrete pipe 1 to rotate slowly. At the same time, the spraying mechanism 2 starts synchronously to spray the inner wall of the concrete pipe 1 with anti-corrosion paint. During this process, the worker slowly pulls the spraying mechanism 2, causing the spraying mechanism 2 to move along the inner wall of the concrete pipe 1. When concrete pipes 1 with different inner diameters need to be sprayed, the speed change mechanism 4 at the end of the spraying mechanism 2 will run synchronously, and the speed change mechanism 4 pushes the adjusting mechanism 3, thereby changing the spraying range of the spraying mechanism 2 to ensure the uniformity of the thickness of the paint on the inner wall of the concrete pipe 1 and the work efficiency.

[0050] Reference Figures 1 to 7In a preferred embodiment, the spraying mechanism 2 also includes a material guide tube 204 rotatably mounted on the other end of the shaft 201, and a wheel frame 205 is slidably sleeved on the outer side of the shaft 201. The wheel frame 205 is squeezed and contacted with the inner wall of the concrete pipe 1. A turning handle 206 is rotatably mounted on the end of the wheel frame 205. The turning handle 206 is threadedly connected to the shaft 201 through a first thread groove 207. The first thread groove 207 is opened on the outer side of one end of the shaft 201.

[0051] The worker uses the lifting equipment to lift the concrete pipe 1 to the top of the rotating mechanism 5, and places the spraying mechanism 2 at the inner end of the concrete pipe 1. At this time, the worker rotates the turning handle 206, causing the turning handle 206 to disengage from the first thread groove 207. As the turning handle 206 loses the restriction of the first thread groove 207, the entire wheel frame 205 will stretch along the inner wall of the concrete pipe 1 and squeeze the inner wall of the concrete pipe 1. Then the entire equipment is moved to the other end of the concrete pipe 1 and started. The rotating mechanism 5 drives the concrete pipe 1 to rotate slowly, and the driving device 202 is started synchronously. The driving device 202 drives the spray rod 203 to rotate, and the guide pipe 204 uses the external pump to introduce the paint into the spray rod through the shaft 201. The worker holds the guide tube 204 and slowly pulls the spraying mechanism 2, causing the wheel frame 205 to drive the entire spraying mechanism 2 to move along the inner wall of the concrete pipe 1; wherein, a first spring 208 is fixedly connected between the turning handle 206 and the end of the shaft 201, and the first spring 208 is sleeved on the outer side of the shaft 201. As the worker rotates the turning handle 206, the turning handle 206 is disengaged from the contact with the first thread groove 207, and as the turning handle 206 loses the restriction of the first thread groove 207, the entire wheel frame 205 will be pushed by the first spring 208, thereby stretching along the inner wall of the concrete pipe 1 and squeezing and contacting the inner wall of the concrete pipe 1.

[0052] Further, it is supplemented that: the driving device 202 includes a housing 2021 fixedly mounted on the end of the shaft 201, the spray rod 203 is rotatably mounted inside the housing 2021 and is connected to the shaft 201, and a motor 2022 is fixedly mounted on the outside of the housing 2021. The output end of the motor 2022 horizontally extends into the interior of the housing 2021, and a transmission gear set 2023 is provided between the output end of the motor 2022 and the spray rod 203; the rotation of the motor 2022 drives the spray rod 203 to rotate synchronously through the transmission gear set 2023, thereby performing a surrounding spraying on the inner wall of the concrete pipe 1;

[0053] Among them, an adapter 209 is installed at the connection between the shaft 201 and the guide tube 204. As the rotating mechanism 5 rotates, the spraying mechanism 2 located inside the rotating mechanism 5 will rotate synchronously. At this time, the guide tube 204 will remain relatively stationary along the end of the shaft 201 through the adapter 209.

[0054] Reference Figures 2 to 6 、 Figures 8 and 9 In a preferred embodiment, the adjustment mechanism 3 also includes a sleeve 303 sleeved on the end of the spray rod 203, the bottom of the sleeve 303 is slidably connected to the mesh rubber disc 304, the bottom of the connecting rod 305 is fixedly connected to the cage 306, and the cage 306 and the top of the mesh rubber disc 304 are in extrusion contact.

[0055] Since the concrete pipe 1 with a larger inner diameter has a larger inner surface area, it is necessary to increase the spraying efficiency by increasing the spraying range. At this time, when spraying the concrete pipe 1 with a larger inner diameter, the universal wheel 302 in contact with the concrete pipe 1 will change its position, and at the same time, it will slowly drive the bracket 301 to move synchronously along the outer side of the spray rod 203, while moving, pushing the connecting rod 305, and the connecting rod 305 will drive the cage 306 to move synchronously, causing the cage 306 to gradually squeeze and contact the sieve hole rubber disc 304, causing the sieve hole rubber disc 304 to bulge outward along the bottom of the sleeve 303. At this time, as the spray rod 203 works, the paint sprayed from the bottom of the spray rod 203 will spread outward from the bulging sieve hole rubber disc 304, thereby achieving the purpose of achieving the larger the inner diameter of the concrete pipe 1, the wider the discharge range of the spray rod 203, without the need for manual adjustment, and with strong adaptability.

[0056] Further, such as Figure 14 As shown, a bending structure may be provided at the bottom of the bracket 301 to prevent the sprayed paint from contacting the universal wheel 302 .

[0057] Reference Figures 3 and 4 、 Figures 6 to 8 and Figure 15 In a preferred embodiment, the speed change mechanism 4 further includes a transmission rod 405 connected between the speed change plate 401 and the speed change ring 403 , and the top of the transmission rod 405 slides through the through hole 407 on the surface of the speed change plate 401 .

[0058] When it is necessary to spray a concrete pipe 1 with a large inner diameter, the position of the universal wheel 302 in contact with the concrete pipe 1 will change, and while changing, the bracket 301 will move synchronously along the outside of the spray rod 203, while moving, driving the speed change plate 401 to move, and the speed change plate 401 will rotate along the outside of the first type of thread groove 402 while moving, and while rotating, it will drive the speed change ring 403 through the transmission rod 405, causing the speed change ring 403 to rotate synchronously along the outside of the second type of thread groove 404, and while the speed change ring 403 rotates, The connecting rod 305 is pushed downward slowly, and the top of the transmission rod 405 is passed through the opening 407. At this time, the connecting rod 305 drives the cage 306 to move synchronously, causing the cage 306 to gradually squeeze and contact the sieve rubber disc 304, causing the sieve rubber disc 304 to bulge outward along the bottom of the sleeve 303. At this time, as the spray rod 203 works, the paint sprayed from the bottom of the spray rod 203 is spread outward from the bulging sieve rubber disc 304, thereby achieving the purpose of achieving a wider discharge range of the spray rod 203 as the inner diameter of the concrete pipe 1 is larger;

[0059] A pressure sensing module 308 is fixed to the outer surface of the spray rod 203. A second spring 307 is provided between the top of the bracket 301 and the pressure sensing module 308. The second spring 307 is sleeved on the outer side of the spray rod 203. When spraying a concrete pipe 1 with a larger inner diameter, the universal wheel 302 and the bracket 301 are pushed outward by the second spring 307. The universal wheel 302 contacts the inner wall of the concrete pipe 1, and the bracket 301 moves along the outer side of the spray rod 203. At this time, the pressure value exerted by the second spring 307 on the pressure sensing module 308 decreases, indicating that the inner diameter of the concrete pipe 1 is larger. The pressure sensing module 308 sends an electrical signal to the controller built into the device. The controller controls the pump connected to the material guide pipe 204 to increase the output power, thereby increasing the material guide amount of the material guide pipe 204, thereby increasing the spraying amount of the spray rod 203 to accommodate a wider spraying range and prevent the spray layer from becoming thinner. This control system is a prior art and can refer to the existing variable frequency constant pressure water supply system.

[0060] Furthermore, it is supplemented that: a second thread groove 406 is provided on the outer side of the bottom of the transmission rod 405, and the transmission rod 405 is fixedly connected to the speed change ring 403 through the second thread groove 406. When the user needs to manually adjust the discharge range of the spray rod 203, the worker holds the transmission rod 405 and rotates it, causing the second thread groove 406 to disengage from the connection relationship with the speed change ring 403, and then pulls the transmission rod 405 out of the through hole 407 at the top of the speed change plate 401. Thereafter, the worker manually rotates the speed change ring 403, causing the speed change ring 403 to rotate synchronously along the outer side of the second type of thread groove 404. While rotating, the speed change ring 403 will slowly move downward and push the connecting rod 305. The connecting rod 305 will drive the cage 306 to move synchronously, causing the cage 306 to gradually squeeze and contact the sieve hole rubber disc 304, causing the sieve hole rubber disc 304 to bulge outward along the bottom of the sleeve 303, thereby adjusting the discharge range of the spray rod 203.

[0061] Reference Figures 3 and 4 、 Figures 6 to 8 In a preferred embodiment, the rotating mechanism 5 includes an electrically controlled rotating seat 501 mounted below both ends of the concrete pipe 1. The two electrically controlled rotating seats 501 are slidably mounted on the top of an electrically controlled guide rail 502, and the electrically controlled guide rail 502 is fixed on the ground.

[0062] The worker adjusts the spacing of the electric-controlled rotating seats 501 according to the length of the concrete pipe 1, causing the electric-controlled rotating seats 501 to move along the top of the electric-controlled guide rail 502. Then the worker uses the lifting equipment to lift the concrete pipe 1 to the top of the two electric-controlled rotating seats 501. As the electric-controlled rotating seats 501 are started, the electric-controlled rotating seats 501 will slowly drive the concrete pipe 1 to rotate.

[0063] Specifically, the anti-corrosion coating may include epoxy coal tar anti-corrosion paint, solvent-free epoxy anti-corrosion paint, etc. The pressure sensor module 308 model is "MPX2010D SIP-4", and the controller model is "C8051F020 single-chip microcomputer".

[0064] Working principle: First, the worker adjusts the spacing of the electric-controlled rotating seat 501 according to the length of the concrete pipe 1, causing the electric-controlled rotating seat 501 to move along the top of the electric-controlled guide rail 502. Then, the worker uses the lifting equipment to lift the concrete pipe 1 to the top of the two electric-controlled rotating seats 501, and at the same time places the spraying mechanism 2 at the inner end of the concrete pipe 1. At this time, the worker rotates the handle 206, causing the handle 206 to break away from the contact with the first thread groove 207. As the handle 206 loses the restriction of the first thread groove 207, the entire wheel frame 205 will be pushed by the first spring 208, thereby stretching along the inner wall of the concrete pipe 1 and squeezing and contacting the inner wall of the concrete pipe 1. Then the entire device is moved to the other end of the concrete pipe 1 and the entire device is started. As the electric-controlled rotating seat 501 is started , the electrically controlled rotating seat 501 will slowly drive the concrete pipe 1 to rotate. The rotating concrete pipe 1 can improve the uniformity of the anti-corrosion coating on its inner wall and prevent the coating on the inner wall from sinking and flowing. At the same time, the driving device 202 is started synchronously, and the driving device 202 will drive the spray rod 203 to rotate, and the guide pipe 204 will use the external pump to introduce the anti-corrosion coating into the interior of the spray rod 203 through the shaft 201, and spray the anti-corrosion coating on the inner wall of the concrete pipe 1 through the spray rod 203. During this process, the worker holds the guide pipe 204 and slowly pulls the spraying mechanism 2, or connects the guide pipe 204 through the winding device to pull it, so that the wheel frame 205 drives the entire spraying mechanism 2 to move along the inner wall of the concrete pipe 1, and performs anti-corrosion treatment on the inner wall of the entire concrete pipe 1;

[0065] like Figure 11 and Figure 13 As shown, if a concrete pipe 1 with a larger diameter needs to be sprayed, the positions of the universal wheel 302 and the bracket 301 can be adaptively changed through the second spring 307. At this time, the second spring 307 will push the bracket 301 to move synchronously along the outer side of the spray rod 203, and at the same time drive the speed change plate 401 to move. The speed change plate 401 will rotate along the outer side of the first type of thread groove 402 while moving, and at the same time drive the speed change ring 403 through the transmission rod 405, causing the speed change ring 403 to rotate synchronously along the outer side of the second type of thread groove 404. 03 will slowly move downward while rotating and push the connecting rod 305, and the top of the transmission rod 405 will pass through the through-port 407. At this time, the connecting rod 305 will drive the cage 306 to move synchronously, causing the cage 306 to gradually squeeze and contact the sieve hole rubber disc 304, causing the sieve hole rubber disc 304 to convexly deform along the bottom of the sleeve 303. At this time, as the spray rod 203 works, the paint sprayed from the bottom of the spray rod 203 will spread outward from the convex sieve hole rubber disc 304, thereby achieving the purpose of achieving a larger inner diameter of the concrete pipe 1 and a wider discharge range of the spray rod 203;

[0066] In addition, the present application can also be applied to the anti-corrosion spraying work of special-shaped pipes, such as conical pipes, or other pipes with different inner diameters. The present application can adaptively adjust the spraying range to improve the spraying efficiency and spraying uniformity.

[0067] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A concrete anti-corrosion device in a saline soil environment, comprising a concrete pipe, characterized in that: A spraying mechanism for spraying an anti-corrosion coating is provided inside the concrete pipe, the spraying mechanism comprising a shaft distributed inside the concrete pipe, a driving device fixedly mounted on one end of the shaft, and a spraying rod mounted on the output end of the driving device; The end of the spraying mechanism is provided with an adjustment mechanism for controlling the spraying range, the adjustment mechanism includes a bracket slidably sleeved on the outside of the spray rod, a universal wheel is rotatably mounted on the bottom of the bracket, and a connecting rod is sleeved on the outside of the spray rod; A speed change mechanism is provided between the spray mechanism and the adjustment mechanism, the speed change mechanism comprising a speed change plate rotatably mounted on the top of the bracket, a first type of thread groove is provided on the outer side of the spray rod, the speed change plate is threadedly connected to the first type of thread groove, a speed change ring is rotatably mounted on the top of the connecting rod, a second type of thread groove is further provided on the outer side of the spray rod, the speed change ring is threadedly connected to the second type of thread groove; The concrete pipe is mounted on the top of the rotating mechanism; The adjustment mechanism further includes a sleeve sleeved on the end of the spray rod, the bottom of the sleeve is slidably connected to a mesh rubber disc, the bottom of the connecting rod is fixedly connected to a cage, and the cage is in extrusion contact with the top of the mesh rubber disc; The speed change mechanism further includes a transmission rod connected between the speed change plate and the speed change ring, wherein the top of the transmission rod slides through a through hole on the surface of the speed change plate; A pressure sensing module is fixed on the outer surface of the spray rod, a second spring is provided between the top of the bracket and the pressure sensing module, and the second spring is sleeved on the outer side of the spray rod.

2. The concrete anti-corrosion equipment in saline soil environment according to claim 1, characterized in that: The spraying mechanism also includes a material guide tube rotatably mounted on the other end of the shaft rod, a wheel frame is slidably sleeved on the outer side of the shaft rod, the wheel frame is squeezed and contacted with the inner wall of the concrete pipe, and a turning handle is rotatably mounted on the end of the wheel frame, the turning handle is threadedly connected to the shaft rod through a first thread groove, and the first thread groove is opened on the outer side of one end of the shaft rod.

3. The concrete anti-corrosion equipment in saline soil environment according to claim 1, characterized in that: The rotating mechanism includes an electrically controlled rotating seat mounted below both ends of the concrete pipe. The two electrically controlled rotating seats are slidably mounted on the top of an electrically controlled guide rail fixed on the ground.

4. The concrete anti-corrosion equipment in saline soil environment according to claim 1, characterized in that: The driving device includes a casing fixedly mounted on the end of the shaft, the spray rod is rotatably mounted inside the casing and is connected to the shaft, a motor is fixedly mounted on the outside of the casing, the output end of the motor horizontally penetrates into the interior of the casing, and a transmission gear set is provided between the output end of the motor and the spray rod.

5. The concrete anti-corrosion equipment in saline soil environment according to claim 2, characterized in that: A first spring is fixedly connected between the turning handle and the end of the shaft rod, and the first spring is sleeved on the outer side of the shaft rod.

6. The concrete anti-corrosion equipment in saline soil environment according to claim 2, characterized in that: An adapter is installed at the connection between the shaft rod and the material guiding tube.

7. The concrete anti-corrosion equipment in saline soil environment according to claim 4, characterized in that: A second thread groove is provided on the outer side of the bottom of the transmission rod, and the transmission rod is fixedly connected to the speed change ring through the second thread groove.

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