A viaduct surface concrete surface coating device and process

Abstract

The application relates to a high-level bridge exposed concrete surface coating device and process, and belongs to the technical field of bridge maintenance, which comprises a bottom plate, a fixed table sliding on the top surface of the bottom plate in the direction perpendicular to the bottom plate, a driving slide rail detachably installed on one side of the fixed table, a sliding seat slidingly installed on the top surface of the driving slide rail, and a supporting side plate abutting against both sides of a bridge pier and fixedly installed on both sides of the driving slide rail, wherein a triggering assembly is arranged between the supporting side plate and the driving slide rail. The application is provided with a control structure, a fixed table, a driving slide rail, a sliding seat and a mounting table. The height position of the fixed table and the driving slide rail is adjusted through the control structure. The sliding seat and the mounting table are reciprocally slid on the top end of the driving slide rail through the driving assembly. The reciprocating sliding of the mounting table is driven by the sliding seat, so that the pretreatment or coating of the bridge pier is completed, thereby reducing the labor intensity of workers and improving the work efficiency to a certain extent.

Description

Technical Field

[0001] This application relates to the field of bridge maintenance technology, and in particular to a coating equipment and process for exposed concrete surfaces of viaducts. Background Technology

[0002] Currently, with the increase in urban traffic flow and the intensification of environmental erosion, the concrete structures of viaducts generally suffer from problems such as deepening carbonization, crack expansion, and steel corrosion. In order to extend the service life of the bridge and improve the landscape effect, it is usually necessary to apply protective coating to its exposed surfaces. By sealing micro-cracks and blocking the intrusion of harmful media, the rate of steel corrosion can be effectively slowed down, while improving the durability and aesthetics of the structure. In addition, the reasonable selection of high-performance coating materials and color schemes can also enhance the visibility of the bridge at night, taking into account both safety and the city's image.

[0003] Currently, the coating process for exposed concrete surfaces of viaducts mainly involves the following steps: cleaning and grinding the concrete substrate, applying primer, applying intermediate coat, and spraying topcoat. In the pretreatment stage before coating, in order to thoroughly remove surface dust, oil stains, and aged loose layers, manual high-altitude operations combined with high-pressure water guns are often used for cleaning and grinding. Workers need to use aerial work platforms or scaffolding platforms and hold high-pressure water guns to rinse the substrate with appropriate water pressure. At the same time, manual or mechanical grinding is used to remove adhering substances, ensuring that the substrate is clean and has uniform roughness, so as to provide good adhesion for subsequent coatings. This process has high requirements for operational safety and quality control, and directly affects the overall coating protection effect and durability.

[0004] Regarding the aforementioned technologies, the inventors believe that workers need to work for extended periods on suspended baskets or mobile scaffolding, resulting in high labor intensity and difficulty in maintaining work efficiency during long hours. Summary of the Invention

[0005] To reduce the labor intensity of workers working at heights for extended periods, this application provides a coating equipment and process for exposed concrete surfaces of viaducts.

[0006] The technical solution provided in this application for coating equipment and process for exposed concrete surfaces of viaducts is as follows: A coating device and process for exposed concrete surfaces of an elevated bridge includes a base plate, a fixed platform that slides on the top surface of the base plate perpendicular to the base plate, a drive rail detachably mounted on one side of the fixed platform, a sliding seat slidably mounted on the top surface of the drive rail, and support side plates for abutting against both sides of the bridge piers and fixedly mounted on both sides of the drive rail. A triggering component is provided between the support side plates and the drive rail for contacting and engaging with the sliding seats. Two sliding supports that move along the length of the support side plates slide at their bottom. The sliding block has a connecting rod hinged to its bottom, and a first mounting hook is hinged to the other end of the connecting rod. The other ends of both sets of connecting rods are hinged to the first mounting hook. A locking mechanism for locking the fixed platform is provided between the base plate and the fixed platform. A driving assembly is provided between the driving slide rail and the sliding seat. A mounting platform for installing water pipe nozzles or scrapers and painting devices is provided at the top of the sliding seat. A control structure for controlling the lifting and lowering of the fixed platform is also provided between the base plate and the locking mechanism.

[0007] By adopting the above technical solution, the base plate is moved to a position close to the bridge pier. The control structure pushes the fixed platform and drive rail to rise to the top of the bridge pier. Two support side plates abut against the two sides of the bridge pier. At this time, the drive component drives the sliding seat to slide back and forth on the top of the drive rail. Workers can choose to install spray nozzles, scrapers, and painting devices according to different situations. At this time, it is only necessary to adjust the height of the fixed platform and drive rail by controlling the structure. The sliding seat drives the installation platform to slide back and forth to complete the pretreatment or painting of the bridge pier, thereby reducing the labor intensity of workers and ensuring work efficiency to a certain extent. At the same time, workers hang the waste bags on the first and second mounting hooks respectively. The sliding seat slides to the two ends of the drive rail and squeezes the trigger component to drive the two sliding blocks to move towards each other, thereby driving the first mounting hook to move towards the center of the bridge pier. At this time, the top opening of the waste bag is open, so as to collect the impurities and debris falling from the two sides of the bridge pier on the installation platform, thereby avoiding the debris falling from the two sides of the bridge pier and injuring the workers during the pretreatment process, reducing the risk of worker injury.

[0008] Optionally, the triggering component includes a pressure plate that slides on both ends of the drive slide rail and is used to contact the sliding seat, a second screw that rotates inside the support side plate, a first gear that is fixedly installed at the end of the second screw, and a first rack that meshes with the teeth of the first gear at the bottom of the pressure plate.

[0009] By adopting the above technical solution, the triggering structure is further defined. When the sliding seat moves to the end of its stroke, it will first contact the pressure plate, thereby buffering the residual kinetic energy of the sliding seat and reducing impact and noise. At the same time, the displacement of the pressure plate is used as the trigger signal source, and the pressure plate drives the first rack at its bottom to move, thereby driving the second screw to rotate through the first gear.

[0010] Optionally, each of the two sliding blocks is provided with a lead screw nut for threaded engagement with the second screw, and a spring is provided on the side of the pressure plate near the support side plate.

[0011] By adopting the above technical solution, the residual kinetic energy of the sliding seat is absorbed by the spring. When the second screw rotates, the screw nut on the top of the sliding block engages with the thread of the second screw, thereby driving the sliding blocks on both sides of the second screw to move towards each other along the axis of the second screw. When the sliding seat and the pressure plate are not in contact, the pressure plate is pushed back to its original position by the spring, and at the same time, the second screw is reversed to drive the two sliding blocks to move back to their original positions.

[0012] Optionally, a second mounting hook is fixedly installed at the bottom of both sets of sliding blocks, and a limiting plate is provided at the bottom of the support side plate away from the pier to limit the displacement direction of the first mounting hook.

[0013] By adopting the above technical solution, the direction of displacement of the first mounting hook is limited. After the workers hang the sewage bag, when the two sets of sliding blocks move towards each other along the axis of the second screw, the first mounting hook is moved towards the middle of the pier by setting a limiting plate, thereby reducing the amount of manual adjustment work.

[0014] Optionally, the locking mechanism includes two first screws rotatably mounted on the top surface of the base plate, and a lead screw nut for threaded engagement with the first screws and fixedly mounted on one side of the fixed platform, wherein the axial direction of the first screws is parallel to the displacement direction of the fixed platform.

[0015] By adopting the above technical solution, the locking mechanism is limited, driving the two first screws to rotate synchronously. Utilizing the threaded engagement between the first screw and the screw nut on the side wall of the fixed platform, the rotational motion of the first screw is converted into the linear motion of the fixed platform along the axis of the first screw. By utilizing the self-locking characteristic of the threaded pair, the position of the fixed platform can be locked by stopping the rotation of the first screw, which improves the stability of the device to a certain extent.

[0016] Optionally, the drive assembly includes a drive shaft rotatably mounted on the sliding seat, a second gear fixedly mounted on the end of the drive shaft, a second rack meshing with the teeth of the second gear and disposed on the top of the drive slide rail, and a drive motor disposed on one side of the sliding seat, with the other end of the drive shaft fixedly connected to the output end of the drive motor.

[0017] By adopting the above technical solution, the drive component is limited, and the drive shaft is driven to rotate by the output end of the drive motor, thereby driving the second gear to rotate synchronously. Since the second gear meshes with the second rack at the top of the drive slide rail, the rotational motion of the second gear is converted into the linear movement of the sliding seat along the second rack. By controlling the direction and speed of the drive motor, the moving direction and speed of the sliding seat can be adjusted, which facilitates automated control and improves the sliding stability of the sliding seat on the drive slide rail.

[0018] Optionally, a timing pulley is fixedly installed at the top of each of the two first screws, and a timing belt for transmission is connected to the outer side of each of the two timing pulleys.

[0019] By adopting the above technical solution, when one of the first screws is driven to rotate, the synchronous pulley at the top of the screw transmits power to the synchronous pulley at the top of the other first screw through the synchronous belt, thereby driving the two first screws to rotate synchronously and in the same direction. The synchronous rotation of the two first screws ensures that the axial driving force on both sides of the fixed platform is consistent, thereby improving the stability of the fixed platform when it moves.

[0020] Optionally, the control structure includes a worm gear rotatably mounted inside the base plate, a worm wheel fixedly mounted on the outside of the first screw and meshing with the worm gear, and a control handle fixedly mounted on the end of the worm gear and rotating on one side of the base plate.

[0021] By adopting the above technical solution, the operator drives the worm to rotate synchronously by rotating the control handle, and drives the first screw to rotate through the meshing transmission between the worm wheel and the worm. The self-locking characteristic of the worm wheel and worm pair itself prevents the first screw from rotating in the opposite direction under the action of external force. At the same time, the worm wheel and worm transmission allows the operator to rotate the control handle with a smaller torque, making the operation more labor-saving.

[0022] Optionally, the top surface of the mounting platform is provided with four mounting through holes, and the water pipe nozzle or scraper and the painting device are all detachably installed in the mounting through holes of the mounting platform by bolts. The top surface of the fixed platform is provided with two sets of fixing holes, and the drive slide rail is detachably installed on the fixed platform by mounting bolts.

[0023] By adopting the above technical solution, different functional components such as water pipe nozzles, scrapers, or painting devices are fixed to the mounting platform with bolts. When it is necessary to change the working function, only the bolts need to be removed to remove the current component, replace it with another component, and then tighten the bolts again. This reduces the equipment procurement cost, and the simple replacement method shortens the operation changeover time, which improves the construction efficiency to a certain extent. The drive slide rail passes through the fixing holes on the fixed platform with mounting bolts and is locked, realizing a detachable fixed connection with the fixed platform. When it is necessary to maintain or replace the drive slide rail, simply loosen the mounting bolts to remove the drive slide rail from the fixed platform. Workers can select different specifications of drive slide rails according to the length of the bridge pier, which improves the applicability of the device to a certain extent.

[0024] A coating process for exposed concrete surfaces of viaducts, based on the aforementioned coating equipment, includes the following steps: S1. Move the equipment to the bridge pier to be painted, adjust the position of the base plate so that the support side plate is aligned with both sides of the bridge pier, adjust the fixed platform and drive slide rail to a suitable working height through the control handle, hang the sludge storage bag on the first hook and the second hook to complete the pretreatment collection preparation. S2, on the mounting platform, the scraper and high-pressure nozzle are replaced in sequence, the drive motor is started to make the sliding seat move back and forth along the drive slide rail, the concrete surface is washed by the high-pressure nozzle, and the laitance, moss and loose layer are removed by the scraper. The trigger component automatically opens and closes the sludge storage bag as the sliding seat moves back and forth to collect the impurities and debris that fall off during washing, avoiding pollution and the risk of falling objects. S3. After the pretreatment is completed, pause the equipment and wait for the concrete surface to air dry naturally. Check the base surface for oil stains, dust, and loose particles to ensure that the surface is dry, clean, and uniformly rough to meet the coating adhesion requirements. S4, replace the primer coating device on the mounting platform, adjust the speed of the drive motor and the travel speed of the sliding seat, and make the coating device evenly apply primer to the concrete surface by the sliding seat moving back and forth at a constant speed along the drive slide rail, control the coating thickness, and ensure that there is no missed coating, no dripping, and no accumulation, thus completing the primer sealing construction. S5. After the primer has fully cured, the intermediate coating device and the topcoat coating device are installed in sequence. The coating steps are repeated. The thickness and interval of each coating layer are controlled according to the process requirements to ensure the adhesion between layers. S6. After the coating is completed, check that the coating surface is free of bubbles, pinholes, and missed areas, and that the thickness meets the standard. Rotate the control handle to lower the fixed platform and drive slide rail, remove the coating components from the mounting platform, remove the sludge bag, and clean the equipment and site.

[0025] In summary, this application includes at least one of the following beneficial technical effects: By setting up a control structure, a fixed platform, a drive slide rail, a sliding seat, and an installation platform, the height of the fixed platform and the drive slide rail can be adjusted by the control structure. The sliding seat and the installation platform can be driven to slide back and forth on the top of the drive slide rail by the drive component. The sliding seat can drive the installation platform to slide back and forth, thus completing the pretreatment or painting of the bridge piers. This reduces the labor intensity of workers and ensures work efficiency to a certain extent. By setting up a trigger component, a first mounting hook, and a second mounting hook, and by hanging the sludge bag on the first and second mounting hooks respectively, the first mounting hook is driven to move towards the center of the pier by the movement of two sliding blocks in opposite directions. The sludge bag collects impurities and debris falling from the surfaces on both sides of the pier, thereby avoiding the debris falling from both sides of the pier and injuring workers during the pretreatment process, and reducing the risk of injury to workers. By setting up a fixed platform and two sets of fixed holes, and by passing the mounting bolts through the fixed holes on the fixed platform and locking them, the drive slide rail and the fixed platform can be detachably and fixedly connected. The staff can select different specifications of drive slide rails according to the length of the bridge pier, thereby improving the applicability of the device to a certain extent. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is one of the partial structural schematic diagrams of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a partial structural schematic diagram of the present invention (third one). Figure 5 For the present invention Figure 4 A magnified view of part A in the image.

[0027] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Drive slide rail; 3. Support side plate; 4. Fixed platform; 5. Sliding seat; 6. Trigger assembly; 61. Contact plate; 62. Second screw; 63. First gear; 64. First rack; 7. Control structure; 71. Worm gear; 72. Worm wheel; 73. Control handle; 8. Drive assembly; 81. Drive shaft; 82. Second gear; 83. Second rack; 84. Drive motor; 9. Locking mechanism; 91. First screw; 10. First mounting hook; 11. Connecting rod; 12. Mounting platform; 13. Sliding block; 14. Spring; 15. Second mounting hook; 16. Limiting plate; 17. Synchronous pulley; 18. Synchronous belt; 19. Mounting through hole; 20. Mounting bolt. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses a coating equipment and process for exposed concrete surfaces of viaducts, referring to... Figure 1 and Figure 2 A coating device and process for exposed concrete surfaces of viaducts includes a base plate 1 installed on the ground, a fixed platform 4 sliding on the top surface of the base plate 1 in a direction perpendicular to the base plate 1, a drive rail 2 detachably installed on one side of the fixed platform 4, a sliding seat 5 slidably installed on the top surface of the drive rail 2, and support side plates 3 for abutting against both sides of the bridge piers and fixedly installed on both sides of the drive rail 2. A locking mechanism 9 for locking the fixed platform 4 is provided between the base plate 1 and the fixed platform 4. A drive assembly 8 is provided between the drive rail 2 and the sliding seat 5. The top of the sliding seat 5 is provided with a device for installing a water pipe nozzle or scraper and a paint coater. The device's mounting platform 12, base plate 1, and locking mechanism 9 are also equipped with a control structure 7 for controlling the lifting and lowering of the fixed platform 4. The height of the fixed platform 4 and the drive slide rail 2 is adjusted by the control structure 7. The drive assembly 8 drives the sliding seat 5 and the mounting platform 12 to slide back and forth on the top of the drive slide rail 2. Workers can choose to install spray nozzles, scrapers, or painting devices on the mounting platform 12 according to different situations. At this time, the pretreatment or painting of the bridge pier can be completed by the sliding seat 5 driving the mounting platform 12 to slide back and forth, thereby reducing the labor intensity of workers and ensuring work efficiency to a certain extent.

[0030] Reference Figure 3 A trigger assembly 6 is provided between the support side plate 3 and the drive slide rail 2 for contacting and engaging with the sliding seat 5. Two sliding blocks 13 slide along the length of the support side plate 3 at the bottom. A connecting rod 11 is hinged to the bottom of each sliding block 13. A first mounting hook 10 for hanging the sludge bag is hinged to the other end of the connecting rod 11. The other ends of both sets of connecting rods 11 are hinged to the first mounting hook 10.

[0031] Reference Figure 3 and Figure 5The triggering component 6 includes a pressure plate 61 that slides on both ends of the drive rail 2 and contacts the sliding seat 5, and a second screw 62 that rotates inside the support side plate 3. A first gear 63 is fixedly installed at the end of the second screw 62. A first rack 64 that meshes with the teeth of the first gear 63 is provided at the bottom of the pressure plate 61. A screw nut for threaded engagement with the second screw 62 is provided at the top of each of the two sliding blocks 13. A spring 14 for absorbing the residual kinetic energy of the sliding seat 5 is provided on the side of the pressure plate 61 near the support side plate 3. A second mounting hook 15 is fixedly installed at the bottom of each of the two sets of sliding blocks 13. A first mounting hook 10 for limiting the displacement of the first mounting hook 10 is provided at the bottom of the support side plate 3 on the side away from the pier. The directional limiting plate 16 slides through the sliding seat 5 to the two ends of the drive slide rail 2 to press the trigger component 6. At the same time, the sliding seat 5 and the pressure plate 61 contact and press, which buffers the residual kinetic energy of the sliding seat 5 and increases the service life of the device to a certain extent. When the pressure plate 61 and the first rack 64 at the bottom move, they drive the second screw 62 to rotate, thereby driving the two sliding blocks 13 to move towards each other, driving the first hanging hook 10 to move towards the center of the pier. At this time, the top opening of the sludge bag is open, so as to cooperate with the receiving and collecting of impurities and debris falling from the two sides of the pier on the mounting platform 12, thereby avoiding the debris falling from the two sides of the pier and injuring the workers during the pretreatment process, and reducing the risk of injury to the workers.

[0032] Reference Figure 2 The locking mechanism 9 includes two first screws 91 rotatably mounted on the top surface of the base plate 1, and a screw nut for threaded engagement with the first screws 91 and fixedly mounted on one side of the fixed platform 4. The axis of the first screws 91 is parallel to the displacement direction of the fixed platform 4. By utilizing the self-locking characteristics of the threaded pair, the position of the fixed platform 4 can be locked by stopping the rotation of the first screws 91, which improves the stability of the device to a certain extent.

[0033] Reference Figure 3 The drive assembly 8 includes a drive shaft 81 rotatably mounted on the sliding seat 5, a second gear 82 fixedly mounted on the end of the drive shaft 81, a second rack 83 meshing with the teeth of the second gear 82 and disposed on the top of the drive slide rail 2, and a drive motor 84 disposed on one side of the sliding seat 5. The other end of the drive shaft 81 is fixedly connected to the output end of the drive motor 84. By controlling the direction and speed of the drive motor 84, the moving direction and speed of the sliding seat 5 can be adjusted, which facilitates automated control and improves the sliding stability of the sliding seat 5 on the drive slide rail 2.

[0034] Reference Figure 2 and Figure 5The control structure 7 includes a worm gear 71 rotatably mounted inside the base plate 1, a worm wheel 72 fixedly mounted on the outside of the first screw 91 and meshing with the worm gear 71, and a control handle 73 fixedly mounted on the end of the worm gear 71 and rotating on one side of the base plate 1. The top ends of the two first screws 91 are fixedly mounted with synchronous pulleys 17, and the outside of the two synchronous pulleys 17 are connected with synchronous belts 18 for transmission. By setting the synchronous belts 18, the two first screws 91 rotate synchronously, so that the axial driving force on both sides of the fixed platform 4 is consistent, which improves the stability of the fixed platform 4 when it moves.

[0035] Four mounting holes 19 are provided on the top surface of the mounting platform 12. Water pipe nozzles or scrapers and painting devices are detachably installed in the mounting holes 19 of the mounting platform 12 by bolts. Two sets of fixing holes are provided on the top surface of the fixed platform 4. The drive slide rail 2 is detachably installed on the fixed platform 4 by mounting bolts 20. According to the actual situation, the staff can select different devices on the mounting platform 12 to achieve different functions, which reduces the operation changeover time to a certain extent. At the same time, the staff can also select different specifications of drive slide rail 2 according to the length of the bridge pier, thereby improving the applicability of the device to a certain extent.

[0036] This application also includes a coating process for exposed concrete surfaces of viaducts, comprising the following steps: S1. Move the equipment to the bridge pier to be painted, adjust the position of the base plate 1 so that the support side plate 3 is aligned with both sides of the bridge pier, adjust the fixed platform 4 and the drive slide rail 2 to a suitable working height through the control handle 73, hang the sludge storage bag on the first hanging hook 10 and the second hanging hook 15 to complete the pre-treatment collection preparation. S2, on the mounting platform 12, the scraper and high-pressure nozzle are replaced in sequence, the drive motor 84 is started to make the sliding seat 5 move back and forth along the drive slide rail 2, the concrete surface is washed by the high-pressure nozzle, the laitance, moss and loose layer are removed by the scraper, and the trigger component 6 automatically opens and closes the sludge storage bag as the sliding seat 5 moves back and forth to collect the impurities and debris that fall off during washing, so as to avoid pollution and the risk of falling objects. S3. After the pretreatment is completed, pause the equipment and wait for the concrete surface to air dry naturally. Check the base surface for oil stains, dust, and loose particles to ensure that the surface is dry, clean, and uniformly rough to meet the coating adhesion requirements. S4, replace the primer coating device on the mounting platform 12, adjust the speed of the drive motor 84 and the travel speed of the sliding seat 5, and make the coating device evenly apply primer to the concrete surface by moving the sliding seat 5 along the drive slide rail 2 at a uniform speed, control the coating thickness, and ensure that there is no missed coating, no dripping, and no accumulation, thus completing the primer sealing construction. S5. After the primer has fully cured, the intermediate coating device and the topcoat coating device are installed in sequence. The coating steps are repeated. The thickness and interval of each coating layer are controlled according to the process requirements to ensure the adhesion between layers. S6. After the coating is completed, check that the coating surface is free of bubbles, pinholes, and missed areas, and that the thickness meets the standard. Rotate the control handle 73 to lower the fixed platform 4 and drive slide rail 2, remove the coating components on the mounting platform 12, remove the sludge bag, and clean the equipment and site.

[0037] The implementation principle of the coating equipment and process for exposed concrete surfaces of viaducts in this application embodiment is as follows: When using this device, the base plate 1 is moved to a position close to the bridge pier. A drive rail 2 of appropriate length is selected according to the actual situation of the bridge pier and passed through the fixing holes on the fixing platform 4 by mounting bolts 20 and locked. The spray head, scraper, or painting device is installed on the mounting platform 12 of the sliding seat 5. The operator drives the worm gear 71 to rotate synchronously by rotating the control handle 73. The worm gear 71 is driven to rotate through the meshing transmission between the worm wheel 72 and the worm wheel 71. The synchronous pulley 17 at the top of the screw transmits power to the synchronous belt at the top of the other first screw 91 through the synchronous belt 18. Wheel 17 drives the two first screws 91 to rotate synchronously and in the same direction. At this time, the fixed platform 4 and the drive slide rail 2 move upward along the axis of the first screw 91. When it reaches the designated position, the drive motor 84 is turned on to drive the drive shaft 81 to rotate. When the drive shaft 81 rotates, it rotates synchronously through the second gear 82 fixed at its end. The second gear 82 meshes with the top of the second rack 83. Therefore, the rotational motion of the second gear 82 is converted into the linear movement of the sliding seat 5 along the second rack 83. The direction of movement of the sliding seat 5 can be adjusted by controlling the direction of the drive motor 84. The reciprocating sliding of the mounting platform 12 driven by the sliding seat 5 can complete the pretreatment or painting of the bridge pier. Synchronously, when the sliding seat 5 moves to the end of the drive slide rail 2, it will first contact and press the pressure plate 61. The pressure plate 61 drives the first rack 64 at its bottom to move, which in turn drives the second screw 62 to rotate through the first gear 63. When the second screw 62 rotates, the screw nut at the top of the sliding block 13 engages with the thread of the second screw 62, thereby driving the sliding blocks 13 on both sides of the second screw 62 to move towards each other along the axial direction of the second screw 62. Under the action of the limiting plate 16, the first hanging hook 10 is driven to move towards the center of the pier to open the top of the sewage bag. When the sliding seat 5 and the pressure plate 61 are not in contact, the spring 14 pushes the pressure plate 61 to reset, and at the same time drives the second screw 62 to reverse and drive the two sliding blocks 13 to move back to reset.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A coating device for exposed concrete surfaces of viaducts, characterized in that, Includes a base plate (1), a fixed platform (4) that slides on the top surface of the base plate (1) in a direction perpendicular to the base plate (1), a drive slide rail (2) that is detachably installed on one side of the fixed platform (4), a sliding seat (5) that is slidably installed on the top surface of the drive slide rail (2), and a support side plate (3) that is used to abut against both sides of the pier and is fixedly installed on both sides of the drive slide rail (2). A trigger assembly (6) for contacting and engaging with the sliding seat (5) is provided between the support side plate (3) and the drive slide rail (2). Two sliding blocks (13) slide along the length direction of the support side plate (3) at the bottom. A connecting rod (11) is hinged to the bottom of each sliding block (13). A first mounting hook (10) is hinged to the other end of the connecting rod (11), and the other ends of both sets of connecting rods (11) are hinged to the first mounting hook (10). A locking mechanism (9) for locking the fixed platform (4) is provided between the base plate (1) and the fixed platform (4). A drive assembly (8) is provided between the drive slide rail (2) and the sliding seat (5); The top of the sliding seat (5) is provided with a mounting platform (12) for installing water pipe nozzles or scrapers and painting devices. A control structure (7) for controlling the lifting and lowering of the fixed platform (4) is also provided between the base plate (1) and the locking mechanism (9).

2. The coating equipment for exposed concrete surfaces of viaducts according to claim 1, characterized in that, The triggering component (6) includes a pressure plate (61) that slides on both ends of the drive slide rail (2) and is used to contact the sliding seat (5), and a second screw (62) that rotates inside the support side plate (3). A first gear (63) is fixedly installed at the end of the second screw (62), and a first rack (64) that meshes with the teeth of the first gear (63) is provided at the bottom of the pressure plate (61).

3. The coating equipment for exposed concrete surfaces of viaducts according to claim 2, characterized in that, Both sliding blocks (13) are provided with screw nuts for threaded engagement with the second screw (62) on their tops, and springs (14) are provided on the side of the pressure plate (61) near the support side plate (3).

4. The coating equipment for exposed concrete surfaces of viaducts according to claim 1, characterized in that, The bottom of both sets of sliding blocks (13) is fixedly equipped with a second mounting hook (15), and a limiting plate (16) is provided at the bottom of the side of the support plate (3) away from the pier to limit the displacement direction of the first mounting hook (10).

5. The coating equipment for exposed concrete surfaces of viaducts according to claim 1, characterized in that, The locking mechanism (9) includes two first screws (91) rotatably mounted on the top surface of the base plate (1) and a lead screw nut for threaded engagement with the first screws (91) and fixedly mounted on one side of the fixed platform (4). The axial direction of the first screws (91) is parallel to the displacement direction of the fixed platform (4).

6. The coating equipment for exposed concrete surfaces of viaducts according to claim 1, characterized in that, The drive assembly (8) includes a drive shaft (81) rotatably mounted on the sliding seat (5), a second gear (82) fixedly mounted on the end of the drive shaft (81), a second rack (83) meshing with the teeth of the second gear (82) and disposed on the top of the drive slide rail (2), and a drive motor (84) disposed on one side of the sliding seat (5). The other end of the drive shaft (81) is fixedly connected to the output end of the drive motor (84).

7. The coating equipment for exposed concrete surfaces of viaducts according to claim 5, characterized in that, Both of the first screws (91) are fixedly mounted with synchronous pulleys (17) at their top ends, and both of the synchronous pulleys (17) are connected to a synchronous belt (18) for transmission on their outer sides.

8. The coating equipment for exposed concrete surfaces of viaducts according to claim 5, characterized in that, The control structure (7) includes a worm (71) rotatably mounted inside the base plate (1), a worm wheel (72) fixedly mounted on the outside of the first screw (91) and meshing with the worm (71), and a control handle (73) fixedly mounted on the end of the worm (71) and rotating on one side of the base plate (1).

9. The coating equipment for exposed concrete surfaces of viaducts according to claim 1, characterized in that, The mounting platform (12) has four mounting through holes (19) on its top surface. The water pipe nozzle or scraper and the painting device are detachably installed in the mounting through holes (19) of the mounting platform (12) by bolts. The fixed platform (4) has two sets of fixing holes on its top surface. The drive slide rail (2) is detachably installed on the fixed platform (4) by mounting bolts (20).

10. A coating process for exposed concrete surfaces of an elevated bridge according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1, move the equipment to the bridge pier to be painted, adjust the position of the base plate (1) so that the support side plate (3) is aligned with both sides of the bridge pier, adjust the fixed platform (4) and the drive slide rail (2) to a suitable working height through the control handle (73), hang the sludge storage bag on the first hanging hook (10) and the second hanging hook (15) to complete the pretreatment collection preparation; S2, on the mounting platform (12), the scraper and high-pressure nozzle are replaced in sequence, the drive motor (84) is started to make the sliding seat (5) move back and forth along the drive slide rail (2), the concrete surface is washed by the high-pressure nozzle, and the laitance, moss and loose layer are removed by the scraper. The trigger component (6) automatically opens and closes the sludge storage bag as the sliding seat (5) moves back and forth to collect the impurities and debris that fall off during washing, so as to avoid pollution and the risk of falling objects. S3. After the pretreatment is completed, pause the equipment and wait for the concrete surface to air dry naturally. Check the base surface for oil stains, dust, and loose particles to ensure that the surface is dry, clean, and uniformly rough to meet the coating adhesion requirements. S4, replace the primer coating device on the mounting platform (12), adjust the speed of the drive motor (84) and the walking speed of the sliding seat (5), and move the sliding seat (5) back and forth at a constant speed along the drive slide rail (2) so that the coating device can evenly apply primer to the concrete surface, control the coating thickness, ensure no missed coating, no dripping, no accumulation, and complete the primer sealing construction; S5. After the primer has fully cured, the intermediate coating device and the topcoat coating device are installed in sequence. The coating steps are repeated. The thickness and interval of each coating layer are controlled according to the process requirements to ensure the adhesion between layers. S6. After the coating is completed, check that the coating surface is free of bubbles, pinholes, and missed coatings, and that the thickness meets the standard. Rotate the control handle (73) to lower the fixed platform (4) and drive slide rail (2), remove the coating components on the mounting platform (12), remove the sludge bag, and clean the equipment and site.

Images