A rust-proof spraying device and method for prestressed pipe pile caps

Abstract

This application relates to the technical field of rust prevention treatment in engineering, and particularly to a rust-proofing spraying device and method for prestressed concrete pipe pile caps. The rust-proofing spraying device for prestressed concrete pipe pile caps includes a vehicle body, a lifting mechanism, a telescopic mechanism, and a spraying mechanism. The spraying mechanism includes a material tank, a conveying assembly, a spray pipe, and an adjusting assembly. The spray pipe forms a ring, with several spray nozzles on the inner wall of the ring. The spray pipe is used to fit over the pile cap and spray paint onto it. The adjusting assembly is used to adjust the diameter of the ring. The material tank is mounted on the vehicle body. The conveying assembly connects the material tank and the spray pipe to convey paint into the spray pipe. The spray pipe is mounted on the telescopic mechanism. The lifting mechanism is mounted on the vehicle body for vertically moving the telescopic mechanism. The telescopic mechanism is mounted on the lifting mechanism for horizontally moving the spray pipe. This rust-proofing spraying device for prestressed concrete pipe pile caps improves the quality and efficiency of painting the pile caps.

Description

Technical Field

[0001] This application relates to the technical field of rust prevention treatment in engineering, and in particular to a rust prevention spraying device and method for prestressed pipe pile caps. Background Technology

[0002] In recent years, with the continuous construction of onshore photovoltaic projects, many types of photovoltaic construction technologies have been discovered and applied. Based on the different foundations for photovoltaic modules, they can be divided into prestressed concrete pipe pile foundations and cast-in-place concrete pile foundations. Both types of pile foundations require the provision of pile caps to ensure the safer installation of photovoltaic brackets on the pile foundations.

[0003] Since the pre-installed pile caps are generally made of steel, long-term exposure to sunlight and rain can easily cause them to rust. Therefore, it is necessary to spray anti-rust paint onto the pile caps to better protect them and prevent corrosion. Currently, anti-rust paint is generally applied manually.

[0004] However, when the pile cap is at a high position, manual brushing is prone to uneven application of the anti-rust paint, missed areas, and manual repainting, which seriously reduces the efficiency and quality of the anti-rust paint spraying. Summary of the Invention

[0005] This application provides a rust-proof spraying device and method for prestressed pipe pile caps, which solves the problem of low brushing quality and efficiency when spraying rust-proof paint on pile caps.

[0006] On the one hand, this application provides a rust-proof spraying device for prestressed pipe pile caps, including a vehicle body, a lifting mechanism, a telescopic mechanism, and a spraying mechanism;

[0007] The spraying mechanism includes a material tank, a conveying assembly, a spray pipe, and an adjusting assembly. The spray pipe is arranged to form a ring, and several spray nozzles are opened on the inner side wall of the ring. The spray pipe is used to fit over the pile cap and spray paint onto the pile cap. The adjusting assembly is used to adjust the diameter of the ring. The material tank is mounted on the vehicle body. The conveying assembly is used to connect the material tank and the spray pipe to convey paint into the spray pipe. The spray pipe is mounted on the telescopic mechanism.

[0008] The lifting mechanism is mounted on the vehicle body for moving the telescopic mechanism vertically; the telescopic mechanism is mounted on the lifting mechanism for moving the spray pipe horizontally.

[0009] In some embodiments, the adjusting assembly includes a connecting sleeve and two adjusting tubes, the two adjusting tubes being rotatably connected to the outer wall of the connecting sleeve, the adjusting tubes being provided with internal threads, the outer walls at both ends of the spray tube being provided with external threads, the two ends of the spray tube being threadedly connected to the two adjusting tubes respectively, and the conveying assembly conveying the paint into the spray tube through the adjusting tubes.

[0010] In some embodiments, the angle between the extended line of the cut of the spray nozzle and the pile cap is α, where 30°≤α≤60°.

[0011] In some embodiments, the conveying assembly includes a pressurizing pump, a connecting member, a discharge pipe, and a sealing member. The pressurizing pump is mounted on the vehicle body and communicates with the material tank. The connecting member connects the discharge end of the pressurizing pump and the discharge pipe. One end of the discharge pipe passes through the connecting sleeve and any of the adjusting pipes and is then inserted into the spray pipe. The sealing member is located at the end of the discharge pipe to seal the gap between the discharge pipe and the spray pipe.

[0012] In some embodiments, the lifting mechanism includes an upper lifting platform, a lower lifting platform, multiple inner sleeve rods, multiple outer sleeves, and a first power component. The lower lifting platform is mounted on the vehicle body, and the upper lifting platform is placed on the lower lifting platform. The inner sleeve rods are rotatably connected to the lower lifting platform in a vertical direction. The outer sleeves are fixedly mounted at the bottom of the upper lifting platform, and the inner sleeve rods are threaded into the outer sleeves. The first power component is connected to the inner sleeve rods to drive the inner sleeve rods to rotate.

[0013] In some embodiments, the telescopic mechanism includes a telescopic neck, a gear, a telescopic tube, a rack, and a second power component. The telescopic neck is disposed on the upper lifting platform. The telescopic tube is slidably disposed within the telescopic neck in a horizontal direction, with one end of the telescopic neck extending outside the telescopic neck. The rack is disposed on the telescopic tube and extends in the sliding direction of the telescopic tube. The gear is rotatably disposed within the telescopic neck and meshes with the rack. The second power component is connected to the gear to drive the gear to rotate. The connecting sleeve is disposed at the end of the telescopic tube located outside the telescopic neck.

[0014] In some embodiments, there are two racks and at least three gears. Two racks are symmetrically arranged at the bottom and top of the telescopic tube, at least two gears are arranged at the bottom of the telescopic tube and mesh with the racks, and at least one gear is arranged at the top of the telescopic tube and meshes with the racks.

[0015] In some embodiments, the connecting member includes a rigid guide tube, a flexible guide tube, and a first guide wheel. The first guide wheel is rotatably disposed within the telescopic neck. The rigid guide tube is disposed within the telescopic tube and communicates with the discharge tube. One end of the flexible guide tube bypasses the first guide wheel and communicates with the rigid guide tube. The other end of the flexible guide tube passes through the upper lifting platform and the lower lifting platform and communicates with the discharge end of the pressurizing pump. The flexible guide tube has a slack for lifting and telescopic movement within the lower lifting platform.

[0016] In some embodiments, a film thickness tester is provided at the end of the telescopic tube, the film thickness tester being positioned toward the pile cap to test the thickness of the coating sprayed on the pile cap.

[0017] On the other hand, this application provides a method for anti-rust spraying of prestressed pipe pile caps, using the aforementioned anti-rust spraying device for prestressed pipe pile caps, including the following steps:

[0018] First, move the vehicle to the cap that needs to be painted;

[0019] Based on the diameter of the pile cap and the required spray thickness, the diameter of the ring formed by the spray nozzle is adjusted by the adjusting component to achieve the spraying requirements.

[0020] The spray pipe is raised above the pile cap by a lifting mechanism, then moved directly above the pile cap by a telescopic mechanism, and then gradually lowered by the lifting mechanism so that the spray pipe is fitted onto the pile cap. The side wall of the pile cap is then sprayed by a spraying mechanism until the spraying is completed.

[0021] This application provides a rust-proof spraying device and method for prestressed concrete pipe pile caps. The device improves spraying efficiency and makes the spraying more uniform by forming a ring around the spray pipe and then fitting the ring onto the pile cap. Furthermore, by rotating the adjusting pipe to adjust the length of the spray pipe within the adjusting pipe, the diameter of the ring formed by the spray pipe is adjusted, thereby changing the distance between the spray nozzle and the pile cap, and thus changing the spraying range and thickness. Changing the angle α of the spray pipe's edge alters the opening angle of the spray nozzle, further changing the spraying range and thickness. The vehicle body enables the movement of the entire device, the lifting mechanism enables the lifting of the spray pipe, and the telescopic mechanism enables the lateral movement of the spray pipe, facilitating the fitting of the spray pipe onto the corresponding pile cap. This device is highly adaptable and can be used to spray pile caps of different diameters, heights, and positions. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] Figure 1 This is a schematic diagram of the overall structure of the prestressed pipe pile cap anti-rust spraying device provided in the embodiments of this application;

[0024] Figure 2 yes Figure 1 Top view of the spray nozzle being fitted onto the pile cap;

[0025] Figure 3 yes Figure 2 Side view of the spray nozzle fitted onto the pile cap;

[0026] Figure 4 yes Figure 2 Cross-sectional view of the connection structure of the central spray pipe;

[0027] Figure 5 yes Figure 1 Schematic diagram of the lifting mechanism;

[0028] Figure 6 yes Figure 5 Top view of the lower middle lifting platform;

[0029] Figure 7 yes Figure 1 Schematic diagram of the telescopic mechanism;

[0030] Figure 8 This is a flowchart of the anti-rust spraying method for prestressed pipe pile caps provided in the embodiments of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Pile cap;

[0033] 100. Vehicle body; 110. Support platform; 120. Operator's cab; 130. Wheels;

[0034] 200. Lifting mechanism; 210. Upper lifting platform; 220. Lower lifting platform; 230. Inner sleeve rod; 240. Outer sleeve tube; 250. First power component;

[0035] 300. Telescopic mechanism; 310. Telescopic neck; 320. Gear; 330. Telescopic tube; 340. Rack;

[0036] 400. Spraying mechanism; 410. Material tank; 420. Conveying assembly; 421. Pressure pump; 422. Connecting component; 4221. Guide tube; 4222. Guide hose; 4223. First guide wheel; 4224. Second guide wheel; 423. Discharge pipe; 424. Sealing component; 430. Spray pipe; 431. Spray nozzle; 440. Adjustment assembly; 441. Connecting sleeve; 442. Adjustment pipe; 450. Film thickness tester.

[0037] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0038] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0039] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In recent years, with the continuous construction of onshore photovoltaic projects, many types of photovoltaic construction technologies have been discovered and applied. Based on the different foundations for photovoltaic modules, they can be divided into prestressed concrete pipe pile foundations and cast-in-place concrete pile foundations. Both types of pile foundations require the provision of pile caps to ensure the safer installation of photovoltaic brackets on the pile foundations.

[0043] Since the pre-installed pile caps are generally made of steel, prolonged exposure to sunlight and rain can easily cause them to rust. Therefore, it is necessary to spray anti-rust paint onto the pile caps to better protect them and prevent corrosion. Currently, anti-rust paint is generally applied manually. However, when the pile caps are located at a high position, manual brushing is prone to uneven application, missed areas, and manual recoating, severely reducing the efficiency and quality of the anti-rust paint application.

[0044] To address the aforementioned problems, this application provides a prestressed concrete pipe pile cap anti-rust spraying device and method. By forming a ring with a spray pipe and then fitting the ring onto the pile cap to spray the circumference of the pile cap, the spraying efficiency is improved, resulting in more uniform spraying. Furthermore, by rotating the adjusting pipe to adjust the length of the spray pipe within the adjusting pipe, the diameter of the ring formed by the spray pipe is adjusted, thereby changing the distance between the spray nozzle and the pile cap, and thus altering the spraying range and thickness. Additionally, by changing the side angle 'a' of the spray pipe, the opening angle of the spray nozzle is changed, further altering the spraying range and thickness. The vehicle body enables the movement of the entire device, the lifting mechanism enables the lifting of the spray pipe, and the telescopic mechanism enables the lateral movement of the spray pipe, facilitating the fitting of the spray pipe onto the corresponding pile cap. This device exhibits strong adaptability, enabling spraying of pile caps of different diameters, heights, and positions.

[0045] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0046] This application provides a rust-proof spraying device for prestressed pipe pile caps, referring to... Figure 1 The prestressed pipe pile cap anti-rust spraying device includes a vehicle body 100, a lifting mechanism 200, a telescopic mechanism 300, and a spraying mechanism 400.

[0047] Reference Figure 1 , Figure 2 and Figure 3The spraying mechanism 400 includes a material tank 410, a conveying assembly 420, a spray pipe 430, and an adjusting assembly 440. The spray pipe 430 forms a ring, and several spray nozzles 431 are opened on the inner side wall of the ring. The spray pipe 430 is used to fit over the pile cap 1 and spray paint onto the pile cap 1. The adjusting assembly 440 is used to adjust the diameter of the ring. The material tank 410 is mounted on the vehicle body 100. The conveying assembly 420 is used to connect the material tank 410 and the spray pipe 430 to convey paint into the spray pipe 430. The spray pipe 430 is mounted on the telescopic mechanism 300. The lifting mechanism 200 is mounted on the vehicle body 100 to move the telescopic mechanism 300 vertically. The telescopic mechanism 300 is mounted on the lifting mechanism 200 to move the spray pipe 430 horizontally.

[0048] The spray nozzle 430 is a flexible tube. Furthermore, the spray nozzle 430 can be either a round tube or a square tube.

[0049] In the above embodiment, the spray pipe 430 is moved by the telescopic mechanism 300 and the lifting mechanism 200, and the annulus formed by the spray pipe 430 is fitted onto the pile cap 1. The diameter of the spray pipe 430 is adjusted by the adjusting component 440, thereby adjusting the distance between the spray nozzle 431 on the spray pipe 430 and the side wall of the pile cap 1, thus adjusting the spraying area of ​​the spray nozzle 431. With the outlet of the spray nozzle remaining unchanged, the spraying area is changed by changing the diameter of the annulus, thereby changing the thickness of the spray. Furthermore, the annulus is directly fitted onto the pile cap 1, making the spraying more uniform, reducing the possibility of omissions, and improving the efficiency of anti-rust paint spraying.

[0050] Specifically, refer to Figure 1 The vehicle body 100 includes a bottom support platform 110, an operator's cab 120, wheels 130, and a power unit. Four wheels 130 are rotatably connected to the bottom of the support platform 110. The power unit is connected to the wheels 130 to drive their rotation. The operator's cab 120 is fixed to the support platform 110 and houses a control computer electrically connected to the power unit to control the rotation of the wheels 130. This enables the entire device to move and be controlled, adapting to complex terrain conditions and suitable for rust-preventive material spraying operations in various terrains, thus improving the device's applicability.

[0051] For example, the vehicle body 100 can also be an existing automobile, and the lifting mechanism 200, telescopic mechanism 300, and spraying mechanism 400 can be installed on the automobile. Installation is more convenient, and the adaptability and power are more conducive to the use of the device.

[0052] In some embodiments, refer to Figure 4The adjusting assembly 440 includes a connecting sleeve 441 and two adjusting pipes 442. The two adjusting pipes 442 are rotatably connected to the outer wall of the connecting sleeve 441. The adjusting pipes 442 are provided with internal threads. The outer walls of both ends of the spray pipe 430 are provided with external threads. Both ends of the spray pipe 430 are respectively threaded into the two adjusting pipes 442. The conveying assembly 420 passes through the adjusting pipes 442 to convey the paint into the spray pipe 430.

[0053] Specifically, both the spray pipe 430 and the adjusting pipe 442 are flexible hoses to facilitate the spray pipe 430 forming a ring. The connecting sleeve 441 is connected to the conveying assembly 420. Two adjusting pipes 442 are symmetrically arranged on the outer wall of the connecting sleeve 441 and communicate with it. The adjusting pipes 442 and the connecting sleeve 441 are rotatably connected via bearings. Both ends of the spray pipe 430 are threaded into the two adjusting pipes 442, and are a certain distance from the ends of the adjusting pipes 442. This allows the distance of the spray pipe 430 within the adjusting pipe 442 to be changed by rotating either adjusting pipe 442, thereby changing the diameter of the ring formed by the spray pipe 430 and thus changing the spray width, achieving control over the spray width and thickness.

[0054] Of course, in some implementations, an adjustment tube 442 may be provided only on one side of the leveling sleeve. One end of the spray tube 430 is threaded into the adjustment tube 442, and the other end is fixed to the connecting sleeve 441. Adjusting a single adjustment tube 442 can also achieve the adjustment of the ring diameter.

[0055] In some embodiments, refer to Figure 3 The angle between the extended line of the cut of the spray nozzle 431 and the pile cap 1 is α, where 30°≤a≤60°.

[0056] Specifically, the spray nozzle 431 is designed as a flared opening, with a larger diameter at the end near the pile cap 1. When the paint is sprayed from the nozzle 431, it spreads outwards along the nozzle, thereby increasing the sprayed area. The spray tube 430 and the adjusting tube 442 are detachably connected by threads; therefore, by replacing the spray tube 430 with different cut angles α, the sprayed area can also be adjusted. Furthermore, to ensure the best spraying effect, the optimal angle α between the extended line of the cut of the spray nozzle 431 and the pile cap 1 is 45°.

[0057] In some embodiments, refer to Figure 1 and Figure 4The conveying assembly 420 includes a pressurizing pump 421, a connecting member 422, and a discharge pipe 423. The pressurizing pump 421 is mounted on the vehicle body 100 and communicates with the material tank 410. The connecting member 422 is used to connect the discharge end of the pressurizing pump 421 and the discharge pipe 423. One end of the discharge pipe 423 passes through the connecting sleeve 441 and any adjusting pipe 442 and is inserted into the spray pipe 430.

[0058] Specifically, the end of the discharge pipe 423 is configured as a symmetrical double pipe, and both ends of the spray pipe 430 are respectively inserted into the double pipe, which is a flexible hose. In other embodiments, the discharge pipe 423 can also be a single discharge port pipe, with one end of the spray pipe 430 inserted into the opening of the discharge pipe 423 and the other end of the spray pipe 430 in a closed state.

[0059] Both the material tank 410 and the pressurizing pump 421 are mounted on the bottom support platform 110. The inlet of the pressurizing pump 421 is connected to the material tank 410 via a pipe. The connecting piece 422 connects the outlet of the pressurizing pump 421 and the outlet pipe 423, and can be adaptively changed according to the movement of the lifting mechanism 200 and the telescopic mechanism 300. The paint in the material tank 410 enters the pressurizing pump 421. After being pressurized by the pressurizing pump 421, the paint passes through the connecting piece 422 and enters the spray pipe 430 from the outlet pipe 423 for spraying.

[0060] In some embodiments, refer to Figure 4 The conveying assembly 420 also includes a seal 424 disposed at the end of the discharge pipe 423 for sealing the gap between the discharge pipe 423 and the spray pipe 430.

[0061] For example, the sealing element 424 is a sealing ring. The sealing ring can be in various forms such as O-ring, rectangular sealing ring, trapezoidal sealing ring, etc. The sealing ring is sleeved on the outer wall of the discharge pipe 423 and abuts against the inner wall of the spray pipe 430 to seal the gap between the spray pipe 430 and the discharge pipe 423, so as to avoid paint leakage and reduce paint waste.

[0062] In some embodiments, refer to Figure 1 , Figure 5 and Figure 6 The lifting mechanism 200 includes an upper lifting platform 210, a lower lifting platform 220, multiple inner sleeve rods 230, multiple outer sleeves 240, and a first power component 250. The lower lifting platform 220 is mounted on the vehicle body 100, and the upper lifting platform 210 is placed on the lower lifting platform 220. The inner sleeve rods 230 are rotatably connected to the lower lifting platform 220 in the vertical direction. The outer sleeves 240 are fixedly mounted on the bottom of the upper lifting platform 210, and the inner sleeve rods 230 are threaded into the outer sleeves 240. The first power component 250 is connected to the inner sleeve rods 230 to drive the inner sleeve rods 230 to rotate.

[0063] For example, four inner sleeve rods 230 and four outer sleeves 240 are provided, with each inner sleeve rod 230 and outer sleeve 240 corresponding to the other. The lower lifting platform 220 is fixed on the bottom support platform 110. The four inner sleeve rods 230 are rotatably mounted at the four corners of the lower lifting platform 220. The upper end of the inner sleeve rod 230 extends into the upper lifting platform 210 and is threadedly connected to the outer sleeve 240. When the inner sleeve rod 230 is completely fitted into the outer sleeve 240, the upper lifting platform 210 contacts the lower lifting platform 220. Four first power components 250 are also provided, each connected to an inner sleeve rod 230 to synchronously drive the four inner sleeve rods 230 to rotate, thereby raising and lowering the upper lifting platform 210. The first power components 250 are motors.

[0064] In some alternative implementations, the number of inner sleeve rods 230 can be set to any number, as long as the upper lifting platform 210 can be raised and lowered; no further restrictions are imposed here. When only one set of inner sleeve rods 230 and outer sleeve tube 240 is set, a limiting structure needs to be set on the lower lifting platform 220 to limit the rotation of the upper lifting platform 210. The limiting structure can be a limiting rod that is slidably inserted into the upper lifting platform 210.

[0065] In some embodiments, refer to Figure 1 and Figure 7 The telescopic mechanism 300 includes a telescopic neck 310, a gear 320, a telescopic tube 330, a rack 340, and a second power component. The telescopic neck 310 is mounted on the upper lifting platform 210. The telescopic tube 330 is slidably mounted inside the telescopic neck 310 in a horizontal direction, with one end of the telescopic neck 310 extending outside the telescopic neck 310. The rack 340 is mounted on the telescopic tube 330 and extends in the sliding direction of the telescopic tube 330. The gear 320 is rotatably mounted inside the telescopic neck 310 and meshes with the rack 340. The second power component is connected to the gear 320 to drive the gear 320 to rotate. The connecting sleeve 441 is mounted at the end of the telescopic tube 330 located outside the telescopic neck 310.

[0066] Specifically, the telescopic neck 310 is an inverted L-shaped tube. The bottom of the telescopic neck 310 is fixedly connected to the upper lifting platform 210 by bolts. The telescopic tube 330 is located in the horizontal pipe above the telescopic neck 310 and can slide horizontally. One end of the telescopic tube 330 extends outside the telescopic neck 310, and the connecting sleeve 441 is fixed to the end of the telescopic tube 330 outside the telescopic neck 310. The second power component is a motor, and the output shaft of the motor is connected to the gear 320 to drive the gear 320 to rotate.

[0067] Of course, in some implementations, a toothed chain can be used instead of the rack 340. The toothed chain can be fixed on the telescopic tube 330 and mesh with the gear 320.

[0068] When it is necessary to adjust the horizontal position of the spray tube 430, the second power component drives the gear 320 to rotate, the gear 320 drives the rack 340 to slide in the horizontal direction, thereby driving the telescopic tube 330 to move, thus realizing the horizontal movement of the spray tube 430.

[0069] In some embodiments, there are two racks 340 and at least three gears 320. The two racks 340 are symmetrically arranged at the bottom and top of the telescopic tube 330, and at least two gears 320 are arranged at the bottom of the telescopic tube 330 to mesh with the racks 340, and at least one gear 320 is arranged at the top of the telescopic tube 330 to mesh with the racks 340.

[0070] For example, two racks 340 and four gears 320 are provided. The two racks 340 are symmetrically fixed to the bottom and top of the telescopic tube 330, and the four gears 320 are arranged in pairs on the upper and lower sides of the telescopic tube 330, meshing with their respective racks 340. The multiple gears 320 serve as limiters to restrict the rotation of the telescopic tube 330. Only one second power component is required, which can be connected to any one of the gears 320. Of course, other limiting structures can also be provided within the telescopic neck 310; further restrictions are not specified here.

[0071] In some embodiments, refer to Figure 7 The connecting component 422 includes a guide tube 4221, a guide hose 4222, and a first guide wheel 4223. The first guide wheel 4223 is rotatably disposed within the telescopic neck 310. The guide tube 4221 is disposed within the telescopic tube 330 and is connected to the discharge tube 423. One end of the guide hose 4222 passes around the first guide wheel and is connected to the guide tube 4221. The other end of the guide hose 4222 passes through the upper lifting platform 210 and the lower lifting platform 220 and is connected to the discharge end of the pressure pump 421. The guide hose 4222 has a margin for lifting and telescopic movement within the lower lifting platform 220.

[0072] Specifically, both the lower lifting platform 220 and the upper lifting platform 210 have cavities for pipe connection. The first guide wheel 4223 is rotatably positioned at the corner of the telescopic neck 310, serving a guiding function. To facilitate the lifting of the upper lifting platform 210 and the extension and retraction of the telescopic pipe 330, a portion of the guide hose 4222 is placed inside the cavity of the lower lifting platform 220.

[0073] For example, a second guide wheel 4224 is rotatably connected within the cavity of the lower lifting platform 220. The discharge end of the second pressure pump 421 is connected to a fixed pipe, one end of which extends into the cavity of the lower lifting platform 220. The excess portion of the guide hose 4222 is wound around the second guide wheel 4224, and the other end of the guide hose 4222 is rotatably connected to the fixed pipe on the rotation axis of the second guide wheel 4224. The excess portion of the guide hose 4222 is thus stored via the second guide wheel 4224. Furthermore, a drive structure can be provided on the second guide wheel 4224 to actively drive its rotation.

[0074] In some embodiments, a film thickness tester 450 is provided at the end of the telescopic tube 330, and the film thickness tester 450 is positioned toward the pile cap 1 to test the thickness of the coating sprayed on the pile cap 1.

[0075] Specifically, the film thickness tester 450 is fixed at the end of the telescopic tube 330 to detect the thickness of the coating on the pile cap 1. The film thickness tester 450 is connected to the control computer in the control room to obtain the coating thickness data, thereby adjusting the relevant parameters such as the spraying pressure and position in real time to ensure the uniformity of the spraying and reduce the waste of paint.

[0076] This application also provides a method for anti-rust spraying of prestressed pipe pile caps, referring to... Figure 8 The use of a rust-proof spraying device for prestressed concrete pipe pile caps includes the following steps:

[0077] S1, first move the vehicle body 100 to the pile cap 1 that needs to be sprayed.

[0078] S2, based on the diameter of the pile cap 1 and the required spraying thickness, adjust the diameter of the ring formed by the spray pipe through the adjusting component to achieve the required spraying thickness.

[0079] Specifically, based on the diameter of the pile cap 1 and the required spraying thickness, the spraying pipe 430 with the corresponding spraying nozzle angle a is replaced. Then, the two ends of the spraying pipe 430 are threaded into the two adjusting pipes 442 respectively, so that the discharge pipe 423 is inserted into the spraying pipe 430. By rotating the adjusting pipe 442, the diameter of the ring formed by the spraying pipe 430 is adjusted to meet the required spraying thickness and prevent the pile cap 1 from rusting.

[0080] S3, the spray pipe 430 is raised above the pile cap 1 by the lifting mechanism 200, and then the spray pipe 430 is moved to the top of the pile cap 1 by the telescopic mechanism 300. Then the spray pipe 430 is gradually lowered by the lifting mechanism 200. When it is lowered to the pile cap 1, the pressure pump 421 is started to start spraying the side wall of the pile cap 1.

[0081] Furthermore, the coating thickness is measured using a film thickness tester 450, and the data is transmitted to the control computer. By analyzing the coating thickness, the moving speed and pressure can be adjusted, and the diameter of the ring can also be adjusted to ensure that the coating thickness meets the required standards.

[0082] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0083] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A rust-proof spraying device for prestressed pipe pile caps, characterized in that, This includes the vehicle body, lifting mechanism, telescopic mechanism, and painting mechanism; The spraying mechanism includes a material tank, a conveying assembly, a spray pipe, and an adjusting assembly. The spray pipe is a circular tube arranged to form a ring. Several spray nozzles are provided on the inner wall of the ring. The spray pipe is used to fit over a pile cap and spray paint onto the pile cap. The adjusting assembly is used to adjust the diameter of the ring. The material tank is mounted on the vehicle body. The conveying assembly is used to connect the material tank and the spray pipe to convey paint into the spray pipe. The spray pipe is mounted on the telescopic mechanism. The lifting mechanism is mounted on the vehicle body for moving the telescopic mechanism in a vertical direction; The telescopic mechanism is mounted on the lifting mechanism for moving the spray pipe horizontally. The adjusting assembly includes a connecting sleeve and two adjusting tubes. The two adjusting tubes are rotatably connected to the outer wall of the connecting sleeve. The adjusting tubes are provided with internal threads. The outer walls of both ends of the spray tube are provided with external threads. The two ends of the spray tube are respectively threaded into the two adjusting tubes. The conveying assembly passes through the adjusting tubes to convey the paint into the spray tube.

2. The prestressed pipe pile cap anti-rust spraying device according to claim 1, characterized in that, The angle between the extended line of the cut of the spray nozzle and the pile cap is α, where 30°≤α≤60°.

3. The prestressed pipe pile cap anti-rust spraying device according to claim 1, characterized in that, The conveying assembly includes a pressurizing pump, a connecting member, a discharge pipe, and a sealing member. The pressurizing pump is mounted on the vehicle body and communicates with the material tank. The connecting member connects the discharge end of the pressurizing pump and the discharge pipe. One end of the discharge pipe passes through the connecting sleeve and any of the adjusting pipes and is then inserted into the spray pipe. The sealing member is located at the end of the discharge pipe to seal the gap between the discharge pipe and the spray pipe.

4. The prestressed pipe pile cap anti-rust spraying device according to claim 3, characterized in that, The lifting mechanism includes an upper lifting platform, a lower lifting platform, multiple inner sleeve rods, multiple outer sleeves, and a first power component. The lower lifting platform is mounted on the vehicle body, and the upper lifting platform is placed on the lower lifting platform. The inner sleeve rods are rotatably connected to the lower lifting platform in a vertical direction. The outer sleeves are fixedly mounted at the bottom of the upper lifting platform, and the inner sleeve rods are threaded into the outer sleeves. The first power component is connected to the inner sleeve rods to drive the inner sleeve rods to rotate.

5. The prestressed pipe pile cap anti-rust spraying device according to claim 4, characterized in that, The telescopic mechanism includes a telescopic neck, a gear, a telescopic tube, a rack, and a second power component. The telescopic neck is disposed on the upper lifting platform. The telescopic tube is slidably disposed within the telescopic neck in a horizontal direction, with one end of the telescopic neck extending outside the telescopic neck. The rack is disposed on the telescopic tube and extends in the sliding direction of the telescopic tube. The gear is rotatably disposed within the telescopic neck and meshes with the rack. The second power component is connected to the gear to drive the gear to rotate. The connecting sleeve is disposed at the end of the telescopic tube located outside the telescopic neck.

6. The prestressed pipe pile cap anti-rust spraying device according to claim 5, characterized in that, The rack is provided in two parts, and the gear is provided in at least three parts. The two racks are symmetrically arranged at the bottom and top of the telescopic tube. At least two gears are arranged at the bottom of the telescopic tube and mesh with the racks. At least one gear is arranged at the top of the telescopic tube and meshes with the racks.

7. The prestressed pipe pile cap anti-rust spraying device according to claim 5, characterized in that, The connecting component includes a rigid guide tube, a flexible guide tube, and a first guide wheel. The first guide wheel is rotatably disposed within the telescopic neck. The rigid guide tube is disposed within the telescopic tube and communicates with the discharge tube. One end of the flexible guide tube bypasses the first guide wheel and communicates with the rigid guide tube. The other end of the flexible guide tube passes through the upper lifting platform and the lower lifting platform and communicates with the discharge end of the pressurizing pump. The flexible guide tube has a margin within the lower lifting platform for lifting and telescopic movement.

8. The rust-proof spraying device for prestressed pipe pile caps according to claim 5, characterized in that, A film thickness tester is provided at the end of the telescopic tube, and the film thickness tester is positioned facing the pile cap to test the thickness of the coating sprayed on the pile cap.

9. A method for applying anti-rust spraying to the cap of a prestressed pipe pile, characterized in that, Using the prestressed pipe pile cap anti-rust spraying device as described in any one of claims 1-8 includes the following steps: First, move the vehicle to the cap that needs to be painted; Based on the diameter of the pile cap and the required spray thickness, the diameter of the ring formed by the spray nozzle is adjusted by the adjusting component to achieve the spraying requirements. The spray pipe is raised above the pile cap by a lifting mechanism, then moved directly above the pile cap by a telescopic mechanism, and then gradually lowered by the lifting mechanism so that the spray pipe is fitted onto the pile cap. The side wall of the pile cap is then sprayed by a spraying mechanism until the spraying is completed.

Images