A crack prevention film coating device and a film coating method for a concrete precast member

Abstract

The application relates to the technical field of concrete prefabricated component maintenance, in particular to a crack-preventing film covering device and film covering method for a concrete prefabricated component, which comprises a film covering frame, the one side of the film covering frame is fixedly connected with side film covering modules which are distributed in front and back; the top of the film covering frame is further fixedly connected with a horizontally arranged balance module; the one side of the film covering frame is further fixedly connected with a synchronous moving module, the one side of the synchronous moving module is further fixedly connected with an obliquely arranged extrusion module; the application realizes the purpose of fixing the plastic film by reserving a certain length of plastic film, the second hydraulic rod drives the friction plate to move downwards, the bottom of the friction plate is in contact with the plastic film, one person can realize the film covering work on the prefabricated component by pulling the film covering frame, the side film covering modules are arranged to ensure that the side of the prefabricated component is extruded, the side of the prefabricated component is tightly covered, the quality of the prefabricated component is ensured, and the nozzles can uniformly and stably water the surface of the prefabricated component under the action of the water pump.

Description

Technical Field

[0001] This invention relates to the field of precast concrete component curing technology, specifically to a crack-resistant coating device and coating method for precast concrete components. Background Technology

[0002] Precast concrete components refer to assembled concrete components that have been manufactured before installation on the construction site. Common examples include precast concrete floor slabs, concrete box girders for bridges, precast concrete roof trusses for industrial plants, culvert frames, and precast concrete piles for foundation treatment. During the precast concrete component manufacturing process, a curing membrane is also required. Curing membrane is a method of maintaining concrete structures or components by applying a membrane to the concrete. After the initial setting and before the final setting of the concrete, a concrete curing membrane is manually laid to ensure a tight bond between the membrane and the concrete surface, promoting the hydration effect of the concrete and playing a significant role in crack prevention and moisture retention during the curing process.

[0003] When applying a film to precast components, it is generally done by a team of people working together. One group holds one end of the film layer while another group moves the film roll. This method can achieve the film application to the precast concrete components, but it has the following problems: First, applying a film to precast components requires multiple people to work together, which wastes a lot of manpower and resources, and a single person cannot apply the film, limiting its application scope. Secondly, when precast components are coated with a film, the two sides of the precast components cannot come into contact with the film layer, so the two sides of the precast components cannot be effectively cured, which can easily lead to cracking and affect the quality. Third, before applying the film to the precast components, it is necessary to water them to keep them moist, and then apply the film. The film application process is inefficient and the watering is uneven, which leads to poor curing. Therefore, in order to address the above problems, a crack-resistant film application device and method for precast concrete components is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a crack-resistant coating device and coating method for precast concrete components, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: As an optional embodiment of the anti-crack coating device and coating method for precast concrete components described in this invention, the anti-crack coating device and coating method for precast concrete components includes a coating frame. The bottom of the film-coating frame is equipped with wheels distributed in a front-to-back pattern; One side of the film-coating frame is fixedly connected to a side film-coating module distributed in the front and back, and one side of the side film-coating module is fixedly connected to a cutting module for cutting the film. The top of the film-coating frame is also fixedly connected to a horizontally set balancing module; A synchronous moving module is fixedly connected to one side of the film-coating frame, and an inclined extrusion module is fixedly connected to one side of the synchronous moving module. A fifth motor is fixedly connected to the bottom of the coating frame, and a coating roll is fixedly connected to the end of the main shaft of the fifth motor. A plastic film is provided on the outside of the coating roll. One side of the coating roll is provided with a support frame that is fixedly connected to the coating frame. A water pump is fixedly connected to one side of the support frame. The input end of the water pump is connected to a water pipe, and the other end of the water pipe is connected to a water tank. The outside of the water tank is fixedly connected to the coating frame. The output end of the water pump is connected to a hollow frame. One side of the bottom of the hollow frame is fixedly connected to nozzles that are evenly distributed longitudinally. The top of the hollow frame is fixedly connected to the support frame. The side coating module includes a mounting frame, a rotating shaft, and an extrusion roller. One side of the mounting frame is fixedly connected to the coating frame. The rotating shaft, which is inclined, is rotatably connected inside the mounting frame. The extrusion roller is fixedly connected to the outside of the rotating shaft. The mounting frame is also fixedly connected to a first motor. The end of the main shaft of the first motor is fixedly connected to a drive gear. The outer side of the drive gear meshes with a driven gear. The inner side of the driven gear is fixedly connected to the rotating shaft. The mounting frame is also installed with an extrusion assembly.

[0006] When applying a film to precast components, the process typically involves multiple people working together. One group holds one end of the film layer while another moves the film roll. This method has several drawbacks: First, it requires multiple people, wasting significant manpower and resources, and is not feasible for a single person, limiting its application. Second, the sides of the precast components cannot effectively cure due to the lack of film contact, leading to cracking and affecting quality. Third, the need to moisturize the components before application results in low efficiency and uneven watering, leading to poor curing. This invention addresses this issue by pre-setting a certain length of plastic film, starting with an extrusion module, and using a second hydraulic rod to move a friction plate downwards. The friction plate contacts the plastic film at its bottom, thus fixing the film in place. Then, a single person can manually pull the film-covering frame to apply the film to the precast components. The operation is simple. The side-covering module ensures the sides of the precast components are squeezed, guaranteeing a tight film covering and ensuring the quality of the precast components. Simultaneously, the nozzles, driven by a water pump, evenly and stably water the surface of the precast components for curing, ensuring their quality. The fifth motor drives the film-covering roll, making it easy to pull and cover the surface of the precast components. When covering the sides of the precast components, the first motor drives the drive gear, which in turn drives the shaft. This allows the extrusion roller to press and fix the corners of the precast components, ensuring stable film covering and guaranteeing the quality of the precast components.

[0007] As an optional embodiment of the anti-crack coating device and coating method for precast concrete components described in this invention, the extrusion assembly includes a limiting frame and a moving shaft. The outer side of the limiting frame is fixedly connected to the mounting frame. The moving shaft is provided inside the limiting frame. Extrusion cylinders are rotatably connected to the outer side of the moving shaft. A support block is fixedly connected to the outer side of the moving shaft. A rotating ring is provided above the support block and rotatably connected to the moving shaft. A spring is fixedly connected to the outer side of the rotating ring, and the other end of the spring is fixedly connected to the limiting frame.

[0008] The spring at this time can compress the rotating ring to move, and the rotating ring drives the moving shaft to move. The support block at this time can ensure the stable movement of the moving shaft. The extrusion cylinder rotates and makes close contact with the side of the precast component. This is used to ensure that the plastic film is stably attached to the side of the precast component and to ensure the quality of the film coating on the precast component.

[0009] As an optional embodiment of the anti-crack coating device and coating method for precast concrete components according to the present invention, the cutting module includes a fixed frame, a rotating column, and a coating extrusion wheel. The outer side of the fixed frame is fixedly connected to the side coating module. The rotating column, arranged longitudinally, is rotatably connected inside the fixed frame. The coating extrusion wheel is fixedly connected to the outer side of the rotating column. A first hydraulic rod is rotatably connected to the top of the fixed frame. A rotating plate is rotatably connected to the other end of the first hydraulic rod. One side of the rotating plate is rotatably connected to the fixed frame. The other end of the rotating plate is fixedly connected to a longitudinal frame.

[0010] As an optional solution of the anti-crack coating device and coating method for precast concrete components according to the present invention, wherein: a second motor is fixedly connected inside the longitudinal frame, a first threaded shaft is fixedly connected to the end of the main shaft of the second motor, the other end of the first threaded shaft is rotatably connected to the longitudinal frame, a movable sleeve is spirally connected to the outside of the first threaded shaft, and a cutter is fixedly connected to the bottom of the movable sleeve.

[0011] When applying a film to the upper surface of a precast component, the film-pressing rollers on the outside of the rotating column can press the film layer, ensuring a stable fit to the precast component and guaranteeing the film quality. After the film application is completed, the first hydraulic rod is activated to drive the rotating plate to rotate. At this time, the longitudinal frame rotates, and the second motor inside the longitudinal frame drives the first threaded shaft to rotate. The first threaded shaft drives the moving sleeve to move, and the moving sleeve drives the cutting shears to move, which allows for automatic cutting, facilitating the subsequent film application to the next batch of precast components.

[0012] As an optional embodiment of the anti-crack coating device and coating method for precast concrete components described in this invention, the synchronous moving module includes a hollow frame, a third motor, and a second threaded shaft. One side of the hollow frame is fixedly connected to the coating frame. The third motor is fixedly connected inside the hollow frame. The second threaded shaft is fixedly connected to the end of the main shaft of the third motor. A threaded cylinder is spirally connected to the outside of the second threaded shaft. A mounting base is fixedly connected to the other end of the threaded cylinder. The bottom of the mounting base is fixedly connected to the extrusion module. A limit block is slidably connected above the threaded cylinder. The top of the limit block is fixedly connected to the hollow frame.

[0013] As an optional solution for the anti-crack coating device and coating method for precast concrete components described in this invention, the extrusion module includes a second hydraulic rod and a friction plate. The top of the second hydraulic rod is fixedly connected to the synchronous moving module, and the bottom of the second hydraulic rod is fixedly connected to the friction plate, which is made of rubber block material.

[0014] When the film-coating frame moves, the third motor is started to drive the second threaded shaft to rotate. The second threaded shaft drives the threaded cylinder to move. At this time, it can be ensured that the friction plate of the extrusion module and the plastic film at the bottom are in a stationary state, ensuring that one end of the plastic film can be stably fixed and that the film-coating work can proceed normally. The limit block set can ensure the stable movement of the threaded cylinder.

[0015] As an optional solution of the anti-crack coating device and coating method for precast concrete components according to the present invention, the balancing module includes a counterweight frame, a fourth motor and a third threaded shaft. The bottom of the counterweight frame is fixedly connected to the coating frame. The fourth motor is fixedly connected inside the counterweight frame. The third threaded shaft is fixedly connected to the end of the main shaft of the fourth motor. The other end of the third threaded shaft is rotatably connected to the counterweight frame. A counterweight block is spirally connected to the outside of the third threaded shaft.

[0016] When the laminating frame moves, sometimes the weight difference between the two sides of the laminating frame is large, making it very difficult to pull the laminating frame. However, by starting the fourth motor to drive the third threaded shaft to rotate, the third threaded shaft drives the counterweight to move, which can balance the two sides of the laminating frame and make it easier to pull the laminating frame.

[0017] As an optional embodiment of the anti-crack coating device and coating method for precast concrete components described in this invention, the coating steps are as follows: Step 1: Install the film-coating roll inside the film-coating frame, and move the film-coating frame to one side of the prefabricated component. By pre-stretching a certain length of plastic film, the film-coating frame is then manually pulled. Step 2: When the film-covering frame is above the precast component, the extrusion module is activated, at which point the bottom of the extrusion module extrudes the plastic film on one side; Step 3: Manually pull the film-covering frame. At this time, the synchronous moving module is activated and extends. The extrusion module is in a relatively stationary state with respect to the precast component. At the same time, the water pump is activated. The water pump drives the water in the water tank to be discharged through the inclined nozzles at the bottom of the hollow frame for watering the precast component. Step 4: When the plastic film has moved a certain distance, it comes into contact with the precast component through water. At this time, the plastic film is used to drive the plastic film to be lowered stably and cover the precast component. At this time, the extrusion module and the synchronous movement module can be recycled. Step 5: Simultaneously, when applying the film to the precast components, the side film application module can be activated to squeeze both sides of the precast components. At this time, the plastic film is stably and tightly attached to the sides of the precast components, ensuring the quality of the film application to the precast components. Step Six: When performing the film coating work, the balancing module is activated, which balances the weight on both sides of the wheels, making it easier for workers to pull the film coating frame. Step 7: After the precast component is covered with film, the film covering frame is moved to press the plastic film against the extrusion module side again. Then the plastic film can be cut by the cutting module. Step 8: When it is necessary to continue coating the precast components, leave a certain length of plastic film and continue to squeeze the plastic film through the extrusion module. At this time, the next precast component can be coated.

[0018] Compared with the prior art, the beneficial effects of the present invention are: When in use, this invention involves reserving a certain length of plastic film, starting the extrusion module, and then using the second hydraulic rod to move the friction plate downwards. The bottom of the friction plate contacts the plastic film, thus fixing the plastic film. Then, pulling the film-covering frame allows a single person to perform the film-covering work on the precast components. The operation is simple. At the same time, the side film-covering module ensures that the sides of the precast components are extruded, ensuring a tight film covering and guaranteeing the quality of the precast components. Meanwhile, the nozzles, under the action of the water pump, can evenly and stably water the surface of the precast components for curing, ensuring the quality of the precast components. The fifth motor drives the film roll to rotate, which ensures that the plastic film can be easily pulled and conveniently covers the surface of the precast component. When the film-coating frame moves, the third motor is started to drive the second threaded shaft to rotate, and the second threaded shaft drives the threaded cylinder to move. At this time, it can be ensured that the extrusion module and the plastic film at the bottom are stationary, ensuring that one end of the plastic film can be stably fixed and ensuring that the film-coating work can proceed normally. When applying a film to the side of a precast component, the first motor is started to drive the drive gear to rotate. At this time, the driven gear drives the shaft to rotate. This allows the extrusion roller to press and fix the corner of the precast component. Meanwhile, the extrusion cylinder rotates and makes close contact with the side of the precast component. This ensures that the plastic film is stably adhered to the side of the precast component, thus ensuring the quality of the film application. The spring drives the rotating ring to move, and the rotating ring drives the rotating shaft to move, which ensures that the extrusion cylinder is in stable contact with the side of the precast component. As the laminating frame moves, its laminating extrusion rollers rotate, which stably extrudes the plastic film, ensuring that the plastic film is in close contact with the upper surface of the precast component, thus ensuring the quality of the lamination. After the lamination of the precast component is completed, the first hydraulic rod is activated to drive the rotating plate to rotate, while the second motor drives the first threaded shaft to rotate. At this time, the first threaded shaft drives the moving sleeve to move, which in turn drives the cutting shears to move, for cutting the plastic film, to facilitate subsequent lamination work. When the laminating frame moves, sometimes the weight difference between the two sides of the laminating frame is large, making it very difficult to pull the laminating frame. However, by starting the fourth motor to drive the third threaded shaft to rotate, the third threaded shaft drives the counterweight to move, which can balance the two sides of the laminating frame and make it easier to pull the laminating frame. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a crack-resistant coating device and coating method for precast concrete components; Figure 2 A schematic diagram of the side coating module of a crack-resistant coating device and coating method for precast concrete components; Figure 3 A schematic diagram of the structure of an anti-crack coating device and coating method for precast concrete components, including an extrusion component. Figure 4 A schematic diagram of a crack-resistant coating device and coating method for precast concrete components, including a cutting module. Figure 5 A longitudinal sectional view of a crack-resistant coating device and coating method for precast concrete components. Figure 6 A schematic diagram of a synchronously moving module for a crack-resistant coating device and coating method for precast concrete components. Figure 7 This is a structural schematic diagram of a crack-resistant coating device and coating method balancing module for precast concrete components.

[0020] In the diagram: 1. Coating frame; 2. Side coating module; 201. Mounting frame; 202. Rotating shaft; 203. Extrusion roller; 204. First motor; 205. Drive gear; 206. Driven gear; 207. Extrusion assembly; 2071. Limiting frame; 2072. Moving shaft; 2073. Extrusion cylinder; 2074. Support block; 2075. Rotating ring; 2076. Spring; 3. Wheel; 4. Cutting module; 401. Fixing frame; 402. Rotating column; 403. Coating extrusion roller; 404. First hydraulic rod; 405. Rotating plate; 406. Longitudinal frame; 407. Second motor; 408. 409. First threaded shaft; 410. Moving sleeve; 5. Cutting shears; 6. Synchronous moving module; 501. Hollow frame; 502. Third motor; 503. Second threaded shaft; 504. Threaded cylinder; 505. Mounting base; 506. Limiting block; 6. Extrusion module; 601. Second hydraulic rod; 602. Friction plate; 7. Balancing module; 701. Counterweight frame; 702. Fourth motor; 703. Third threaded shaft; 704. Counterweight block; 8. Fifth motor; 9. Coated roll; 10. Plastic film; 11. Support frame; 12. Water pump; 13. Water pipe; 14. Hollow frame; 15. Nozzle; 16. Water tank. Detailed Implementation

[0021] Example

[0022] Please see Figure 1 and Figure 2 The present invention provides a technical solution: A crack-resistant coating device and coating method for precast concrete components, comprising a coating frame 1, The bottom of the aforementioned film-coating frame 1 is equipped with wheels 3 arranged in a front-to-back pattern; The aforementioned film-coating frame 1 is fixedly connected to one side with side film-coating modules 2 distributed in the front and back, and the aforementioned side film-coating module 2 is fixedly connected to one side with a cutting module 4 for cutting the film. The top of the aforementioned film-coating frame 1 is also fixedly connected to a horizontally arranged balancing module 7; A synchronous moving module 5 is fixedly connected to one side of the aforementioned film-coating frame 1, and an inclined extrusion module 6 is fixedly connected to one side of the aforementioned synchronous moving module 5. The bottom of the above-mentioned film-coating frame 1 is fixedly connected to a fifth motor 8, the end of the main shaft of the above-mentioned fifth motor 8 is fixedly connected to a film-coating roll 9, and a plastic film 10 is provided on the outside of the above-mentioned film-coating roll 9. One side of the aforementioned coated roll 9 is provided with a support frame 11 that is fixedly connected to the coated frame 1. A water pump 12 is fixedly connected to one side of the support frame 11. The input end of the water pump 12 is connected to a water pipe 13. The other end of the water pipe 13 is connected to a water tank 16. The outer side of the water tank 16 is fixedly connected to the coated frame 1. The output end of the water pump 12 is connected to a hollow frame 14. One side of the bottom of the hollow frame 14 is fixedly connected with nozzles 15 that are evenly distributed longitudinally. The top of the hollow frame 14 is fixedly connected to the support frame 11. The aforementioned side coating module 2 includes a mounting frame 201, a rotating shaft 202, and an extrusion roller 203. One side of the mounting frame 201 is fixedly connected to the coating frame 1. The rotating shaft 202, which is inclined, is rotatably connected inside the mounting frame 201. The extrusion roller 203 is fixedly connected to the outside of the rotating shaft 202. The mounting bracket 201 is also fixedly connected to a first motor 204. The main shaft end of the first motor 204 is fixedly connected to a drive gear 205. The outer side of the drive gear 205 is meshed with a driven gear 206. The inner side of the driven gear 206 is fixedly connected to the rotating shaft 202. The mounting bracket 201 is also installed with a pressing assembly 207.

[0023] The above coating steps are as follows: Step 1: Install the film-coating roll 9 inside the film-coating frame 1, and move the film-coating frame 1 to one side of the prefabricated component. By pre-stretching a certain length of plastic film 10, the film-coating frame 1 is then manually pulled. Step 2: When the film-covering frame 1 is above the prefabricated component, the extrusion module 6 is activated, at which time the bottom of the extrusion module 6 extrudes the plastic film 10 on one side. Step 3: Manually pull the film-covering frame 1. At this time, the synchronous moving module 5 is activated and extended. At this time, the extrusion module 6 is in a relatively stationary state with respect to the precast component. Simultaneously, the water pump 12 is activated. The water pump 12 drives the water inside the water tank 16 to be discharged through the inclined nozzle 15 at the bottom of the hollow frame 14 for watering the precast component. Step 4: When the plastic film 10 has moved a certain distance, it comes into contact with the precast component through water. At this time, the plastic film 10 is used to drive the plastic film 10 to be lowered stably and cover the precast component. At this time, the extrusion module 6 and the synchronous movement module 5 can be recycled. Step 5: Simultaneously, when applying the film to the precast component, the side film application module 2 can be activated to squeeze both sides of the precast component. At this time, the plastic film 10 is stably and tightly attached to the side of the precast component, ensuring the quality of the film application to the precast component. Step 6: When performing the film covering work, the balance module 7 is activated, which balances the weight on both sides of the wheel 3, making it easier for the staff to pull the film covering frame 1 to move. Step 7: After the precast component is covered with film, the film covering frame 1 is moved to squeeze the plastic film 10 again on one side of the extrusion module 6. Then the plastic film 10 can be cut by the cutting module 4. Step 8: When it is necessary to continue to coat the precast components, the plastic film 10 is squeezed by the extrusion module 6 by leaving a certain length of plastic film 10. At this time, the next precast component can be coated.

[0024] When applying a film to precast components, it is generally done by multiple people working together. One group holds one end of the film layer while another group moves the film roll. This method of applying the film to the precast concrete components has the following problems: First, applying the film to precast components requires multiple people, wasting a lot of manpower and resources, and it is not feasible for a single person to apply the film, limiting its application scope. Second, when applying the film to precast components, the sides of the components cannot come into contact with the film layer, resulting in ineffective curing and potential cracking that affects quality. Third, the components need to be moistened with water before applying the film, which is inefficient and uneven watering can lead to poor curing. In this invention, a certain length of plastic film is reserved, and the extrusion module 6 is activated. The second hydraulic rod 601 moves the friction plate 602 downwards, and the bottom of the friction plate 602... When in contact with the plastic film, the plastic film can be fixed. Then, the film-covering frame 1 can be manually pulled to allow a single person to perform the film-covering work on the precast component. The operation is simple. At the same time, the side film-covering module 2 can ensure that the sides of the precast component are squeezed to ensure that the sides of the precast component are tightly covered and to ensure the quality of the precast component. Meanwhile, the nozzle 15, under the action of the water pump 12, can evenly and stably water the surface of the precast component for curing and to ensure the quality of the precast component. The fifth motor 8 drives the film-covering roll 9 to rotate, which ensures that the plastic film can be easily pulled to cover the surface of the precast component. When covering the sides of the precast component, the first motor 204 is started to drive the drive gear 205 to rotate. At this time, the driven gear 205 drives the rotating shaft 206 to rotate. This allows the extrusion wheel 202 to squeeze and fix the corners of the precast component, ensuring stable film-covering on the sides of the precast component and ensuring the quality of the precast component. Example

[0025] This embodiment is an improvement made to Implementation 1. Please refer to [link / reference]. Figure 3 Specifically, the extrusion assembly 207 includes a limiting frame 2071 and a moving shaft 2072. The outer side of the limiting frame 2071 is fixedly connected to the mounting bracket 201. The moving shaft 2072 is provided inside the limiting frame 2071. The extrusion cylinder 2073 is rotatably connected to the outer side of the moving shaft 2072. The support block 2074 is fixedly connected to the outer side of the moving shaft 2072. A rotating ring 2075 is provided above the support block 2074 and is rotatably connected to the moving shaft 2072. A spring 2076 is fixedly connected to the outer side of the rotating ring 2075, and the other end of the spring 2076 is fixedly connected to the limiting frame 2071.

[0026] At this time, the spring 2076 can squeeze the rotating ring 2075 to move, and the rotating ring 2075 drives the moving shaft 2072 to move. The support block 2074 can ensure the stable movement of the moving shaft 2072. The extrusion cylinder 2073 rotates and makes close contact with the side of the precast component. This is used to ensure that the plastic film is stably attached to the side of the precast component and to ensure the quality of the film coating on the precast component. Example

[0027] This embodiment is an improvement upon the two implementation examples. Please refer to [link / reference]. Figure 4 and Figure 5 Specifically, the cutting module 4 includes a fixed frame 401, a rotating column 402, and a film-coating extrusion roller 403. The outer side of the fixed frame 401 is fixedly connected to the side film-coating module 2. The rotating column 402, which is arranged longitudinally, is rotatably connected inside the fixed frame 401. The film-coating extrusion roller 403 is fixedly connected to the outer side of the rotating column 402. A first hydraulic rod 404 is rotatably connected to the top of the fixed frame 401. A rotating plate 405 is rotatably connected to the other end of the first hydraulic rod 404. One side of the rotating plate 405 is rotatably connected to the fixed frame 401. A longitudinal frame 406 is fixedly connected to the other end of the rotating plate 405.

[0028] A second motor 407 is fixedly connected inside the longitudinal frame 406. A first threaded shaft 408 is fixedly connected to the end of the main shaft of the second motor 407. The other end of the first threaded shaft 408 is rotatably connected to the longitudinal frame 406. A movable sleeve 409 is spirally connected to the outside of the first threaded shaft 408. A cutter 410 is fixedly connected to the bottom of the movable sleeve 409.

[0029] When applying a film to the upper surface of a precast component, the film-pressing roller 403 on the outer side of the rotating column 402 can press the film layer, ensuring stable adhesion to the precast component and guaranteeing the film quality. After the film application is completed, the first hydraulic rod 404 is activated to drive the rotating plate 405 to rotate. At this time, the longitudinal frame 406 rotates, and the second motor 407 inside the longitudinal frame 406 drives the first threaded shaft 408 to rotate. The first threaded shaft 408 drives the moving sleeve 409 to move, and the moving sleeve 409 drives the cutting shears 410 to move. At this time, automatic cutting can be performed, which facilitates the subsequent film application to the next batch of precast components. Example

[0030] This embodiment is an improvement upon the three implementation examples. Please refer to [link / reference]. Figure 6Specifically, the aforementioned synchronous movement module 5 includes a hollow frame 501, a third motor 502, and a second threaded shaft 503. One side of the hollow frame 501 is fixedly connected to the film-coating frame 1. The third motor 502 is fixedly connected inside the hollow frame 501. The second threaded shaft 503 is fixedly connected to the end of the main shaft of the third motor 502. A threaded cylinder 504 is spirally connected to the outside of the second threaded shaft 503. A mounting base 505 is fixedly connected to the other end of the threaded cylinder 504. The bottom of the mounting base 505 is fixedly connected to the extrusion module 6. A limiting block 506 is slidably connected above the threaded cylinder 504. The top of the limiting block 506 is fixedly connected to the hollow frame 501.

[0031] The extrusion module 6 includes a second hydraulic rod 601 and a friction plate 602. The top of the second hydraulic rod 601 is fixedly connected to the synchronous movement module 5, and the bottom of the second hydraulic rod 601 is fixedly connected to the friction plate 602, which is made of rubber block material.

[0032] When the film-coating frame 1 moves, the third motor 502 is started to drive the second threaded shaft 503 to rotate. The second threaded shaft 503 drives the threaded cylinder 504 to move. At this time, it can be ensured that the friction plate 602 of the extrusion module 6 and the plastic film at the bottom are in a stationary state, ensuring that one end of the plastic film can be stably fixed and ensuring that the film-coating work is carried out normally. The limit block 506 can ensure that the threaded cylinder 504 moves stably. Example

[0033] This embodiment is an improvement upon the four implementation examples. Please refer to [link / reference]. Figure 7 Specifically, the aforementioned balance module 7 includes a counterweight frame 701, a fourth motor 702, and a third threaded shaft 703. The bottom of the counterweight frame 701 is fixedly connected to the film-coating frame 1. The fourth motor 702 is fixedly connected inside the counterweight frame 701. The third threaded shaft 703 is fixedly connected to the end of the main shaft of the fourth motor 702. The other end of the third threaded shaft 703 is rotatably connected to the counterweight frame 701. A counterweight block 704 is spirally connected to the outside of the third threaded shaft 703.

[0034] When the laminating frame 1 moves, sometimes the weight difference between the two sides of the laminating frame 1 is large. At this time, it is very difficult to pull the laminating frame 1. However, by starting the fourth motor 702 to drive the third threaded shaft 703 to rotate, the third threaded shaft 703 drives the counterweight 704 to move. At this time, the two sides of the laminating frame 1 can be balanced, making it easier to pull the laminating frame 1 to move.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A crack-resistant coating device for precast concrete components, characterized in that: Including the film-covered frame (1). The bottom of the film-covering frame (1) is equipped with wheels (3) distributed in front and behind. The film-coating frame (1) is fixedly connected to one side with side film-coating modules (2) distributed in front and back, and the side film-coating module (2) is fixedly connected to one side with a cutting module (4) for cutting the film. The top of the film-covering frame (1) is also fixedly connected to a horizontally set balancing module (7). A synchronous moving module (5) is fixedly connected to one side of the film-coating frame (1), and an inclined extrusion module (6) is fixedly connected to one side of the synchronous moving module (5). The bottom of the coating frame (1) is fixedly connected to a fifth motor (8), and the end of the main shaft of the fifth motor (8) is fixedly connected to a coating roll (9). A plastic film (10) is provided on the outside of the coating roll (9). The film roll (9) is provided with a support frame (11) fixedly connected to the film frame (1) on one side. A water pump (12) is fixedly connected to one side of the support frame (11). The input end of the water pump (12) is connected to a water pipe (13). The other end of the water pipe (13) is connected to a water tank (16). The outside of the water tank (16) is fixedly connected to the film frame (1). The output end of the water pump (12) is connected to a hollow frame (14). A nozzle (15) is fixedly connected to one side of the bottom of the hollow frame (14) and is evenly distributed in the longitudinal direction. The top of the hollow frame (14) is fixedly connected to the support frame (11). The side coating module (2) includes a mounting frame (201), a rotating shaft (202) and an extrusion wheel (203). One side of the mounting frame (201) is fixedly connected to the coating frame (1). The rotating shaft (202) is rotatably connected inside the mounting frame (201) and the extrusion wheel (203) is fixedly connected to the outside of the rotating shaft (202). The mounting bracket (201) is also fixedly connected to a first motor (204), and the end of the main shaft of the first motor (204) is fixedly connected to a drive gear (205). The outer side of the drive gear (205) is meshed with a driven gear (206), and the inner side of the driven gear (206) is fixedly connected to the rotating shaft (202). The mounting bracket (201) is also fixedly connected to a pressing assembly (207).

2. The anti-crack coating device for precast concrete components according to claim 1, characterized in that: The extrusion assembly (207) includes a limiting frame (2071) and a moving shaft (2072). The outer side of the limiting frame (2071) is fixedly connected to the mounting frame (201). The moving shaft (2072) is provided inside the limiting frame (2071). An extrusion cylinder (2073) is rotatably connected to the outer side of the moving shaft (2072). A support block (2074) is fixedly connected to the outer side of the moving shaft (2072). A rotating ring (2075) is provided above the support block (2074) and is rotatably connected to the moving shaft (2072). A spring (2076) is fixedly connected to the outer side of the rotating ring (2075), and the other end of the spring (2076) is fixedly connected to the limiting frame (2071).

3. The anti-crack coating device for precast concrete components according to claim 1, characterized in that: The cutting module (4) includes a fixed frame (401), a rotating column (402), and a film-coating extrusion wheel (403). The outer side of the fixed frame (401) is fixedly connected to the side film-coating module (2). The rotating column (402) is rotatably connected to the inside of the fixed frame (401). The film-coating extrusion wheel (403) is fixedly connected to the outer side of the rotating column (402). The top of the fixed frame (401) is rotatably connected to a first hydraulic rod (404). The other end of the first hydraulic rod (404) is rotatably connected to a rotating plate (405). One side of the rotating plate (405) is rotatably connected to the fixed frame (401). The other end of the rotating plate (405) is fixedly connected to a longitudinal frame (406).

4. The anti-crack coating device for precast concrete components according to claim 3, characterized in that: A second motor (407) is fixedly connected inside the longitudinal frame (406). A first threaded shaft (408) is fixedly connected to the end of the main shaft of the second motor (407). The other end of the first threaded shaft (408) is rotatably connected to the longitudinal frame (406). A movable sleeve (409) is spirally connected to the outside of the first threaded shaft (408). A cutter (410) is fixedly connected to the bottom of the movable sleeve (409).

5. The anti-crack coating device for precast concrete components according to claim 1, characterized in that: The synchronous moving module (5) includes a hollow frame (501), a third motor (502), and a second threaded shaft (503). One side of the hollow frame (501) is fixedly connected to the film-coating frame (1). The third motor (502) is fixedly connected inside the hollow frame (501). The second threaded shaft (503) is fixedly connected to the end of the main shaft of the third motor (502). A threaded cylinder (504) is spirally connected to the outside of the second threaded shaft (503). A mounting base (505) is fixedly connected to the other end of the threaded cylinder (504). The bottom of the mounting base (505) is fixedly connected to the extrusion module (6). A limit block (506) is slidably connected above the threaded cylinder (504). The top of the limit block (506) is fixedly connected to the hollow frame (501).

6. The anti-crack coating device for precast concrete components according to claim 1, characterized in that: The extrusion module (6) includes a second hydraulic rod (601) and a friction plate (602). The top of the second hydraulic rod (601) is fixedly connected to the synchronous moving module (5), and the bottom of the second hydraulic rod (601) is fixedly connected to the friction plate (602). The friction plate (602) is made of rubber block material.

7. The anti-crack coating device for precast concrete components according to claim 1, characterized in that: The balancing module (7) includes a counterweight frame (701), a fourth motor (702), and a third threaded shaft (703). The bottom of the counterweight frame (701) is fixedly connected to the film-coating frame (1). The fourth motor (702) is fixedly connected inside the counterweight frame (701). The third threaded shaft (703) is fixedly connected to the end of the main shaft of the fourth motor (702). The other end of the third threaded shaft (703) is rotatably connected to the counterweight frame (701). A counterweight block (704) is spirally connected to the outside of the third threaded shaft (703).

8. The coating method of the anti-cracking coating device for precast concrete components according to any one of claims 1-7, characterized in that: The coating method is as follows: Step 1: Install the film-coating roll (9) inside the film-coating frame (1), and move the film-coating frame (1) to one side of the prefabricated component. Then, pull the film-coating frame (1) manually by stretching a certain length of plastic film (10) in advance. Step 2: When the film covering frame (1) is above the precast component, the extrusion module (6) is activated, at which time the bottom of the extrusion module (6) extrudes the plastic film (10) on one side. Step 3: Manually pull the film-covering frame (1). At this time, the synchronous moving module (5) is activated and extended. At this time, the extrusion module (6) is in a relatively static state relative to the precast component. At the same time, the water pump (12) is activated. The water pump (12) drives the water inside the water tank (16) to be discharged through the inclined nozzle (15) at the bottom of the hollow frame (14) for watering the precast component. Step 4: When the plastic film (10) has moved a certain distance, it comes into contact with the precast component through water. The film roll (9) rotates and drives the plastic film (10) to be steadily lowered and covered the precast component. At this time, the recycling extrusion module (6) and the synchronous movement module (5) are activated. Step 5: At the same time, when the precast components are covered with film, the side film covering module (2) can be activated to squeeze the two sides of the precast components. At this time, the plastic film (10) is stably and tightly attached to the side of the precast components to ensure the quality of the film covering of the precast components. Step 6: When performing the film covering work, the balance module (7) is activated, which can balance the weight on both sides of the wheel (3) to facilitate the staff to pull the film covering frame (1) to move. Step 7: After the precast component is covered with film, the bottom of the extrusion module (6) is pressed against the plastic film (10) again by continuing to move the film covering frame (1). Then the plastic film (10) can be cut by the cutting module (4). Step 8: When it is necessary to continue to cover the precast components, a certain length of plastic film (10) is reserved, and the plastic film (10) is continued to be squeezed by the extrusion module (6). At this time, the next precast component can be covered.

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