Grouting device and grouting method for polyurethane concrete prefabricated laminated slab

Abstract

The invention relates to the technical field of polyurethane concrete prefabricated laminated slabs, and discloses a grouting device and method for a polyurethane concrete prefabricated laminated slab. The grouting device comprises a bottom frame and a first guide rail, the top face of the first guide rail is slidably connected with a fixed supporting plate, and a separable laminated slab mold is fixed into the fixed supporting plate; according to the invention, through the rotatable retractable adjusting screw rod, the threaded sleeve and the pulley, a laminated slab mold is clamped and fixed in the fixed supporting plate during pouring, and after pouring is completed, the adjusting screw rod, the threaded sleeve and the pulley are rotated, and the laminated slab mold is supported through the adjusting screw rod, the threaded sleeve and the pulley, so that the laminated slab mold can be conveniently taken out; according to the grouting device for the polyurethane concrete prefabricated laminated slab, the laminated slab mold can be horizontally and stably separated from the fixed supporting plate, subsequent installation of the fixed supporting plate is facilitated, the problem that an existing grouting device for the polyurethane concrete prefabricated laminated slab is inconvenient to separate the mold after grouting is solved, and continuous batch operation of the grouting device is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of polyurethane concrete prefabricated composite panels, and in particular to a grouting device and a grouting method for polyurethane concrete prefabricated composite panels. Background Art

[0002] ECO modified polyurethane concrete is a thermosetting mixture formed by mixing polyester polyurethane binder and aggregates of a certain grade at room temperature. As a material that does not contain asphalt at all, the binder is composed entirely of high molecular polymers and will not cause pollution to the environment. Precast composite slabs are assembled integral floor slabs composed of precast slabs and cast-in-place reinforced concrete layers. Precast composite slabs cast with polyurethane concrete have excellent overall mechanical strength, which is conducive to solving problems such as delamination and shear resistance of steel bridge deck pavement.

[0003] According to a grouting device and method for a prefabricated concrete composite slab disclosed in Chinese Patent Publication No. 202410143940.X, the device includes a frame, a reciprocating mechanism, a vibrating mechanism, a grouting mechanism and a scraping mechanism. The frame includes a C-type slide rail. Two groups of C-type slide rails are provided. The two groups of C-type slide rails are positioned opposite to each other. Support columns are fixedly connected to both sides of the bottom of the two groups of C-type slide rails. The reciprocating mechanism, the grouting mechanism and the scraping mechanism are arranged so that the device can perform smoothing work at the same time during grouting. The vibrating mechanism is arranged so that four groups of vibrating columns are used to vibrate the device during grouting and smoothing to eliminate gaps in the slurry. There is no need to manually eliminate gaps later. At the same time, bubbles in the slurry can be eliminated by vibration to avoid hollowing of the finished composite slab, thereby ensuring the quality of the finished product.

[0004] After the grouting is completed, the composite board mold needs to be separated and left to stand to wait for solidification. The current grouting device cannot effectively ensure that the composite board mold is separated horizontally and stably at the same time when the composite board mold is separated. It takes a long time to wait for the prefabricated composite board to solidify and dry carefully, which is not convenient for subsequent grouting operations. After the grouting is completed, the prefabricated composite board that has been grouted cannot be maintained and protected, which is not convenient for batch grouting processing. Summary of the invention

[0005] In order to solve the problem that the existing grouting device of polyurethane concrete prefabricated composite panels is inconvenient to separate the mold after grouting and cannot maintain the prefabricated composite panels, the present invention provides a grouting device and a grouting method for polyurethane concrete prefabricated composite panels to solve the above problems.

[0006] To achieve the above object, the present invention provides the following technical solutions: A grouting device and grouting method for a polyurethane concrete prefabricated composite plate, comprising a base frame and a guide rail 1, wherein the top surface of the guide rail 1 is slidably connected to a fixed support plate, a detachable composite plate mold is fixed inside the fixed support plate, an inner bracket is sleeved and installed in the middle of the base frame, a guide rail 2 is installed on the top surface of the inner bracket, a mobile trailer is slidably connected to the guide rail 2, a control valve is installed on the mobile trailer, a grouting pipe is fixed to the output end of the control valve, an outer bracket is sleeved and installed on the outer side of the guide rail 2, a slurry tank is fixedly installed on the top surface of the outer bracket, the bottom output end of the slurry tank is connected to the input end of the control valve through a hose, a feed port is fixed on the top of the slurry tank, support components are arranged on both sides of the composite plate mold for supporting the composite plate mold to move and separate, and a vibrating and scraping component is installed on the side of the outer bracket away from the control valve.

[0007] Furthermore, a fixed clamp is symmetrically slidably sleeved inside the fixed support plate, a movable screw is fixed to the bottom of each fixed clamp, each movable screw is slidably inserted into an adjustment slot opened at the bottom of the fixed support plate, and one end of each movable screw extending to the bottom of the fixed support plate is threaded with a fixing nut, and shock-absorbing pads are glued and fixed to opposite sides of the two fixed clamps.

[0008] Furthermore, the support assembly includes a support screw, an adjusting screw, a threaded sleeve and a pulley. Support screws are symmetrically fixed on both sides of the composite plate mold. A rotating sleeve block is rotatably sleeved on each of the support screws. An adjusting screw is fixed on the side of the rotating sleeve block. A threaded sleeve is threadedly sleeved on the adjusting screw. A pulley is fixed on the end of the threaded sleeve away from the support screw. Another fixing nut is threadedly sleeved on the support screw on the side of each rotating sleeve block.

[0009] Furthermore, the vibrating and scraping assembly includes a vibrating rod and a flat material scraper, a support plate is fixed to the outer bracket away from the control valve side, a hydraulic cylinder is symmetrically installed on the top of the support plate, two hydraulic cylinder output ends slide through the bottom of the support plate, a movable plate is fixed to one end of the hydraulic cylinder output end that passes through the bottom of the support plate, a number of vibrating rods are equidistantly installed on the bottom surface of the movable plate close to the control valve side, a detachable flat material scraper is fixed to the bottom surface of the other movable plate, and a coating assembly is provided on the side of the flat material scraper away from the vibrating rod.

[0010] Furthermore, the coating assembly includes self-adhesive tape, a flat material scraper and a fixed plate. A film roll is arranged on the side of the flat material scraper away from the vibrating rod. The front and rear ends of the film roll are connected to the fixed plate by rotation. Bolts are threaded on the two fixed plates. The front and rear ends of the film roll are rotatably mounted on the bolts. The top surfaces of the fixed plates are fixed to the bottom surfaces of the movable plates. The self-adhesive tape is glued and fixed to the top surface of the composite plate mold.

[0011] Furthermore, the coating assembly also includes a tensioning pressure plate, a sliding rod and a spring. The top surface of the film roll is slidably fitted with a tensioning pressure plate, and a number of sliding rods are equidistantly fixed to the top surface of the tensioning pressure plate. The sliding rods are all slidably sleeved inside another movable plate, and springs are sleeved on the sliding rods between the bottom surface of the other movable plate and the top surface of the tensioning pressure plate. The upper and lower ends of the springs are respectively fixed to the tensioning pressure plate and the movable plate.

[0012] Furthermore, a stirring motor is installed at the center position of the top surface of the slurry tank, and the output end of the stirring motor rotates and penetrates into the interior of the slurry tank. A rotating rod is fixed to one end of the output end of the stirring motor that penetrates into the interior of the slurry tank, and a plurality of stirring scrapers are equidistantly fixed on the outer surface of the rotating rod, and the outer surface of the stirring scraper is slidably fitted with the inner wall of the slurry tank.

[0013] Furthermore, the sum of the lengths of the adjusting screw and the threaded sleeve is greater than the distance between the bottom surface of the composite plate mold and the bottom surface of the base frame, and bubble levels are installed on two mutually perpendicular sides of the fixed support plate.

[0014] Furthermore, a plurality of engaging grooves are equidistantly provided on the top surface of the flat material scraper, a fixing block is sleeved inside each of the engaging grooves, the top surface of each of the fixing blocks is fixed to the bottom surface of the movable plate, a fixing screw is fixed on the side of each of the fixing blocks, and a nut is threadedly sleeved on one end of each of the fixing screws extending to the outside of the flat material scraper.

[0015] Furthermore, a grouting method of a grouting device for a polyurethane concrete prefabricated composite slab is provided, the grouting method comprising the following steps: Step A, installing the laminated plate mold, flat material scraper and fixed plate; Step A1, first use two bubble levels to determine whether the fixed pallet is horizontal in two horizontal directions. If the fixed pallet is not placed horizontally, place a pad to ensure that the fixed pallet is level; Step A2: After ensuring that the fixed support plate is level, place the laminated plate mold horizontally on the top surface of the fixed support plate, push the fixed clamping plates on both sides to drive the movable screw to slide inside the adjustment groove, so that the shock-absorbing pads abut against both sides of the laminated plate mold, and after the laminated plate mold is clamped and fixed by the fixed clamping plates and the shock-absorbing pads, screw the fixing nuts so that the fixed clamping plates and the fixing nuts cooperate to clamp and fix them on the fixed support plate; Step A3, select the corresponding flat material scraper according to its size, and then align the flat material scraper and put it on the fixed block and the screw through the snap-fit ​​groove, and then screw the nut onto the screw to clamp and fix the flat material scraper. The flat material scraper can be installed on the bottom of the support plate, and the film roll is placed between the two fixed plates. The bolt is screwed so that the bolt thread passes through the fixed plate and then rotated and inserted into the film roll; Step B, casting prefabricated composite slab; Step B1, first use a mortar pump to pour the polyurethane concrete slurry into the slurry tank through the feed port, then open the slide cylinder on the base frame, so that the slide cylinder runs to drive the fixed support plate to slide on the guide rail, and when the composite board mold is driven to move below the grouting pipe, the slide cylinder on the inner bracket runs to drive the mobile carriage to move, and at the same time open the control valve, so that the grouting pipe reciprocates above the composite board mold for grouting; Step B2, open the vibrating rod, and the composite board mold after grouting continues to move. When it moves to the bottom of the vibrating rod, the hydraulic cylinder above it moves the moving plate downward, thereby driving the vibrating rod to move downward, and vibrating the polyurethane concrete slurry after grouting; Step B3, at the same time, the hydraulic cylinder above the leveling scraper operates, driving the leveling scraper to move downward, scraping the vibrated polyurethane concrete slurry flat, and the fixed support plate reciprocates until the grouting is completed; Step C, film covering and curing; Step C1, after grouting is completed, the film on the film roll is pulled so that the movable end of the film is attached to one end of the self-adhesive sticker at the top of the laminated board mold, and the film is unrolled as the laminated board mold moves, so that the film covers the scraped polyurethane concrete slurry; Step C2, when the film roll is rotating and unwinding, the tension pressing plate is always in contact with the outermost film under the push of the spring, ensuring that the film can be kept in a tense and open state when unwinding. After the film is coated on the laminated board mold, the film is bonded to the adhesive, and the laminated board mold can be removed by cutting the film; Step D, separating the laminated plate mold; Step D1, after the lamination is completed, the fixing nut is screwed to release the clamping fixation of the fixing nut on the fixed support plate, the fixed clamping plates are pulled to both sides to release the fixation of the laminated plate mold, the laminated plate mold is pushed, the support screw at one end is moved out of the bottom frame, the fixing nut on the support screw at this end is screwed to release the clamping fixation of the fixing nut on the rotating sleeve block, the rotating sleeve block is rotated, the adjusting screw and the threaded sleeve are rotated to be placed vertically, and then the threaded sleeve is rotated to drive the vertical bottom surface of the pulley to the bottom surface, and then the fixing nut is screwed again to clamp and fix the rotating sleeve block; Step D2, after the composite board mold at one end is separated, rotate the other end of the composite board mold under the support of the pulley, lower one pulley at the other end to support the composite board mold, and then lower the other pulley to support the composite board mold, so that the two pulleys at the other end are in contact with the bottom surface, the composite board mold can be moved horizontally, and then the other composite board mold can be installed on the fixed pallet to continue pouring.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the composite board mold is clamped and fixed inside the fixed support plate during pouring by means of a rotatable and retractable adjusting screw, a threaded sleeve and a pulley. After pouring, the adjusting screw, the threaded sleeve and the pulley are rotated to support the composite board mold by means of the adjusting screw, the threaded sleeve and the pulley, so that the composite board mold can be horizontally and stably separated from the fixed support plate, which is convenient for subsequent installation of the fixed support plate. This solves the problem that the existing grouting device for polyurethane concrete prefabricated composite boards is inconvenient to separate the mold after grouting, and facilitates the grouting device to perform continuous batch operation; 2. In the present invention, the vibrating rod and the flattening scraper cooperate to promptly vibrate and flatten the concrete slurry after pouring, without the need for manual operation by workers, and the detachable design of the flattening scraper facilitates adjustment according to the size of the composite board mold, thereby improving the applicability of the grouting device; 3. In the present invention, after the pouring is completed, the film is coated on the surface of the fixed support plate by the film coating component, which can promote the hydration effect of the concrete and play a role in preventing cracks and moisturizing during the concrete curing process, thereby solving the problem that the existing grouting device of the polyurethane concrete prefabricated composite board cannot perform curing on the prefabricated composite board after grouting, and improving the practicality of the grouting device; 4. In the present invention, by means of the rotating rod and the stirring scraper inside the slurry tank, during grouting, the internal polyurethane concrete slurry can be stirred to avoid stagnation, and after the grouting is completed, after clean water is injected into the slurry tank, the inner wall of the slurry tank is cleaned by rotating the rotating rod and the stirring scraper, which facilitates the normal maintenance of the grouting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the left three-dimensional structure of a grouting device according to an embodiment of the present application; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the right side of the grouting device in the illustrated embodiment; Figure 3 yes Figure 1 A bottom view schematic diagram of the three-dimensional structure of the fixed support plate in the embodiment shown; Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure of the laminated plate when the mold is separated in the embodiment shown; Figure 5 yes Figure 1A bottom view schematic diagram of the structure of the vibrating and leveling assembly in the illustrated embodiment; Figure 6 yes Figure 1 A schematic diagram of the connection structure of the film covering assembly in the embodiment shown; Figure 7 yes Figure 1 A schematic diagram of the local structure of the vibrating and leveling assembly in the embodiment shown; Figure 8 yes Figure 1 Schematic diagram of the cross-section of the slurry tank structure in the illustrated embodiment.

[0019] The meanings of the reference numerals in the figure are as follows: 1. base frame; 2. guide rail 1; 3. fixed support plate; 4. laminated plate mold; 5. bubble level; 6. outer support; 7. slurry tank; 8. feed port; 9. stirring motor; 10. control valve; 11. grouting pipe; 12. mobile trailer; 13. guide rail 2; 14. inner support; 15. fixed splint; 16. shock pad; 17. mobile screw; 18. adjustment slot; 19. fixing nut; 20. support Support screw; 21. Rotating sleeve; 22. Adjusting screw; 23. Threaded sleeve; 24. Pulley; 25. Adhesive sticker; 26. Support plate; 27. Hydraulic cylinder; 28. Moving plate; 29. ​​Vibrating rod; 30. Flat material scraper; 31. Fixed plate; 32. Film roll; 33. Tension plate; 34. Sliding rod; 35. Spring; 36. Rotating rod; 37. Fixed block; 38. Fixed screw; 39. Engaging groove; 40. Stirring scraper. DETAILED DESCRIPTION

[0020] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Reference Figures 1 to 8A grouting device and grouting method for a polyurethane concrete prefabricated composite board, comprising a base frame 1 and a guide rail 2, a fixed support plate 3 is slidably connected to the top surface of the guide rail 2, a detachable composite board mold 4 is fixed inside the fixed support plate 3, an inner bracket 14 is sleeved and installed in the middle of the base frame 1, a guide rail 2 13 is installed on the top surface of the inner bracket 14, a mobile trailer 12 is slidably connected to the guide rail 2 13, a control valve 10 is installed on the mobile trailer 12, a grouting pipe 11 is fixed to the output end of the control valve 10, an outer bracket 6 is sleeved and installed on the outer side of the guide rail 2 13, a slurry tank 7 is fixedly installed on the top surface of the outer bracket 6, and the center position of the top surface of the slurry tank 7 A stirring motor 9 is installed at the position, and the output end of the stirring motor 9 rotates and penetrates into the slurry tank 7. A rotating rod 36 is fixed to one end of the output end of the stirring motor 9 that penetrates into the slurry tank 7. A number of stirring scrapers 40 are fixed at equal intervals on the outer surface of the rotating rod 36. The outer surface of the stirring scraper 40 slides and fits with the inner wall of the slurry tank 7. The output end at the bottom of the slurry tank 7 is connected to the input end of the control valve 10 through a hose. A feed port 8 is fixed to the top of the slurry tank 7. Support assemblies are arranged on both sides of the composite plate mold 4 for supporting the composite plate mold 4 to move and separate. A vibrating and scraping assembly is installed on the outer bracket 6 away from the control valve 10.

[0022] Specifically, a fixed splint 15 is symmetrically slidably sleeved inside the fixed support plate 3, a movable screw 17 is fixed to the bottom of each fixed splint 15, each movable screw 17 is slidably inserted into an adjustment slot 18 opened at the bottom of the fixed support plate 3, and one end of each movable screw 17 extending to the bottom of the fixed support plate 3 is threaded with a fixing nut 19, and shock-absorbing pads 16 are glued and fixed to opposite sides of the two fixed splints 15.

[0023] As an optimization scheme, the support assembly includes a support screw 20, an adjusting screw 22, a threaded sleeve 23 and a pulley 24. The support screws 20 are symmetrically fixed on both sides of the composite plate mold 4. A rotating sleeve block 21 is rotatably sleeved on each support screw 20. An adjusting screw 22 is fixed on the side of the rotating sleeve block 21. A threaded sleeve 23 is threadedly sleeved on the adjusting screw 22. The sum of the lengths of the adjusting screw 22 and the threaded sleeve 23 is greater than the distance between the bottom surface of the composite plate mold 4 and the bottom surface of the base 1. Bubble levels 5 are installed on two mutually perpendicular sides of the fixed support plate 3. A pulley 24 is fixed on the end of the threaded sleeve 23 away from the support screw 20. Another fixing nut 19 is threadedly sleeved on the support screw 20 on the side of each rotating sleeve block 21.

[0024] As a further optimization scheme, the vibrating and leveling assembly includes a vibrating rod 29 and a leveling scraper 30. A support plate 26 is fixed to the outer bracket 6 on the side away from the control valve 10. Hydraulic cylinders 27 are symmetrically installed on the top of the support plate 26. The output ends of the two hydraulic cylinders 27 slide through the bottom of the support plate 26. A movable plate 28 is fixed to one end of the hydraulic cylinder 27 output end that passes through the bottom of the support plate 26. Several vibrating rods 29 are equidistantly installed on the bottom surface of the movable plate 28 close to the control valve 10. A detachable leveling scraper 30 is fixed to the bottom surface of the other movable plate 28. A coating assembly is provided on the side of the leveling scraper 30 away from the vibrating rod 29.

[0025] As a further optimization scheme, the film coating assembly includes a self-adhesive sticker 25, a flat material scraper 30 and a fixed plate 31. A film roll 32 is arranged on the side of the flat material scraper 30 away from the vibrating rod 29. The front and rear ends of the film roll 32 are connected to the fixed plate 31 by rotation. Bolts are threadedly sleeved on the two fixed plates 31. The front and rear ends of the film roll 32 are rotatably sleeved on the bolts. The top surfaces of the fixed plates 31 are fixed to the bottom surface of the movable plate 28. The self-adhesive sticker 25 is glued and fixed to the top surface of the composite plate mold 4. A plurality of engaging grooves 39 are equidistantly provided on the top surface of the flat material scraper 30. A fixing block 37 is sleeved inside each engaging groove 39. The top surface of each fixing block 37 is fixed to the bottom surface of the movable plate 28. A fixing screw 38 is fixed to the side of each fixing block 37. A nut is threadedly sleeved on one end of each fixing screw 38 extending to the outside of the flat material scraper 30. The coating assembly also includes a tensioning plate 33, a sliding rod 34 and a spring 35. The top surface of the film roll 32 is slidably fitted with the tensioning plate 33. Several sliding rods 34 are equidistantly fixed on the top surface of the tensioning plate 33. The sliding rods 34 are all slidably sleeved inside another movable plate 28. Springs 35 are sleeved on the sliding rods 34 between the bottom surface of the other movable plate 28 and the top surface of the tensioning plate 33. The upper and lower ends of the springs 35 are respectively fixed on the tensioning plate 33 and the movable plate 28.

[0026] Working principle: During grouting, first use two bubble levels 5 to determine whether the fixed support plate 3 is horizontal in two horizontal directions. When the fixed support plate 3 is not placed horizontally, place a pad to ensure that the fixed support plate 3 is horizontal. After ensuring that the fixed support plate 3 is horizontal, place the composite board mold 4 horizontally on the top surface of the fixed support plate 3, push the fixed clamping plates 15 on both sides, drive the moving screw 17 to slide inside the adjustment groove 18, so that the shock-absorbing pads 16 abut against both sides of the composite board mold 4, and after the composite board mold 4 is clamped and fixed by the fixed clamping plates 15 and the shock-absorbing pads 16, screw the fixed clamping plates 15 and the shock-absorbing pads 16. The fixing nut 19 is used to make the fixing clamping plate 15 and the fixing nut 19 cooperate and clamp and fix them on the fixing support plate 3. The corresponding flat material scraper 30 is selected according to the size of the flat material scraper 30, and then the flat material scraper 30 is aligned and sleeved on the fixing block 37 and the screw through the snap-fit ​​groove 39, and then the nut is screwed onto the screw to clamp and fix the flat material scraper 30. The flat material scraper 30 can be installed at the bottom of the support plate 26, and the film roll 32 is placed between the two fixing plates 31. The bolt is screwed so that the bolt thread passes through the fixing plate 31, and then it is rotated and inserted into the film roll 32; Then, the prefabricated composite board is cast. First, a mortar pump is used to pump the polyurethane concrete slurry into the slurry tank 7 through the feed port 8. Then, the slide cylinder on the base frame 1 is opened, so that the slide cylinder runs to drive the fixed support plate 3 to slide on the guide rail 2, and the composite board mold 4 is driven to move to the bottom of the grouting pipe 11. The sliding cylinder on the inner bracket 14 drives the movable drag frame 12 to move. At the same time, the control valve 10 is opened, so that the grouting pipe 11 reciprocates above the composite board mold 4 for grouting. The vibrating rod 29 is opened, and the composite board mold 4 after grouting continues to move. When it moves to the bottom of the vibrating rod 29, the hydraulic cylinder 27 above it runs to move the movable plate 28 downward, thereby driving the vibrating rod 29 to move downward, and vibrating the polyurethane concrete slurry after grouting. At the same time, the hydraulic cylinder 27 above the flat material scraper 30 runs, driving the flat material scraper 30 to move downward, and the vibrated polyurethane concrete slurry is scraped flat, and the fixed support plate 3 reciprocates until the grouting is completed; After the grouting is completed, the film on the film roll 32 is pulled so that the active end of the film is attached to one end of the self-adhesive tape 25 at the top of the laminated board mold 4. As the laminated board mold 4 moves, the film is pulled to unwind so that the film covers the flattened polyurethane concrete slurry. When the film roll 32 is rotated and unrolled, the tension pressing plate 33 is always in contact with the outermost film under the push of the spring 35, ensuring that the film can be kept in a tense and open state when unrolling. After the film is coated on the laminated board mold 4, the film is bonded to the self-adhesive tape 25, and the laminated board mold 4 can be removed by cutting the film. After the coating is completed, the fixing nut 19 is screwed to release the clamping fixation of the fixing nut 19 on the fixed support plate 3, and the fixing clamping plates 15 are pulled to both sides to release the fixation of the laminated plate mold 4, and the laminated plate mold 4 is pushed. The support screw 20 at one end is moved out of the base frame 1, and the fixing nut 19 on the support screw 20 at this end is screwed to release the clamping fixation of the fixing nut 19 on the rotating sleeve block 21. The rotating sleeve block 21 is rotated to rotate the adjusting screw 22 and the threaded sleeve 23 to be placed vertically, and then the threaded sleeve 23 is rotated to drive the pulley 24 is placed on the bottom surface of the vertical structure, and then the fixing nut 19 is tightened to re-clamp and fix the rotating sleeve 21. After the composite board mold 4 at one end is separated, the other end of the composite board mold 4 is rotated under the support of the pulley 24, and a pulley 24 at the other end is lowered to support the composite board mold 4. After a triangular support is formed, the other pulley 24 is lowered to support the composite board mold 4, so that the two pulleys 24 at the other end are in contact with the bottom surface, the composite board mold 4 can be moved horizontally, and then the other composite board mold 4 can be installed on the fixed support plate 3 to continue pouring.

[0027] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0028] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A grouting device for a polyurethane concrete prefabricated composite slab, characterized in that: The invention comprises a base frame (1) and a guide rail (2), wherein the top surface of the guide rail (2) is slidably connected to a fixed support plate (3), a detachable laminated plate mold (4) is fixed inside the fixed support plate (3), an inner bracket (14) is sleeved and installed in the middle of the base frame (1), a guide rail (13) is installed on the top surface of the inner bracket (14), a movable carriage (12) is slidably connected to the guide rail (13), a control valve (10) is installed on the movable carriage (12), and an injection valve (10) is fixed on the output end of the control valve (10). A slurry pipe (11), an outer bracket (6) is sleeved and installed on the outer side of the second guide rail (13), a slurry tank (7) is fixedly installed on the top surface of the outer bracket (6), the bottom output end of the slurry tank (7) is connected to the input end of the control valve (10) through a hose, and a feed port (8) is fixedly installed on the top of the slurry tank (7), support components are arranged on both sides of the composite plate mold (4) for supporting the composite plate mold (4) to move and separate, and a vibrating and scraping component is installed on the side of the outer bracket (6) away from the control valve (10).

2. The grouting device for the polyurethane concrete prefabricated composite slab according to claim 1 is characterized in that: A fixed clamping plate (15) is symmetrically slidably sleeved inside the fixed support plate (3), a movable screw (17) is fixed to the bottom of each fixed clamping plate (15), each movable screw (17) is slidably inserted into an adjustment slot (18) provided at the bottom of the fixed support plate (3), one end of each movable screw (17) extending below the fixed support plate (3) is threaded with a fixing nut (19), and shock-absorbing pads (16) are glued and fixed to opposite sides of the two fixed clamping plates (15).

3. The grouting device for the polyurethane concrete prefabricated composite slab according to claim 2, characterized in that: The support assembly comprises a support screw (20), an adjusting screw (22), a threaded sleeve (23) and a pulley (24); support screws (20) are symmetrically fixed on both sides of the laminated plate mold (4); a rotating sleeve block (21) is rotatably sleeved on each of the support screws (20); an adjusting screw (22) is fixed on the side of the rotating sleeve block (21); a threaded sleeve (23) is threadedly sleeved on each of the adjusting screws (22); a pulley (24) is fixed on one end of the threaded sleeve (23) away from the support screw (20); and another fixing nut (19) is threadedly sleeved on the support screw (20) on the side of each rotating sleeve block (21).

4. The grouting device for the polyurethane concrete prefabricated composite slab according to claim 1, characterized in that: The vibrating and leveling component comprises a vibrating rod (29) and a leveling scraper (30); a support plate (26) is fixed to the side of the outer bracket (6) away from the control valve (10); a hydraulic cylinder (27) is symmetrically mounted on the top of the support plate (26); the output ends of the two hydraulic cylinders (27) are slidably penetrated to the bottom of the support plate (26); a movable plate (28) is fixed to one end of the output end of the hydraulic cylinder (27) that penetrates to the bottom of the support plate (26); a plurality of vibrating rods (29) are equidistantly mounted on the bottom surface of the movable plate (28) close to the control valve (10); a detachable leveling scraper (30) is fixed to the bottom surface of the other movable plate (28); and a coating component is arranged on the side of the leveling scraper (30) away from the vibrating rod (29).

5. The grouting device for the polyurethane concrete prefabricated composite slab according to claim 4, characterized in that: The film coating assembly comprises a self-adhesive tape (25), a flat material scraper (30) and a fixed plate (31); a film roll (32) is arranged on a side of the flat material scraper (30) away from the vibrating rod (29); the front and rear ends of the film roll (32) are connected to the fixed plate (31) by rotation; bolts are threadedly sleeved on the two fixed plates (31); the front and rear ends of the film roll (32) are rotatably sleeved on the bolts; the top surfaces of the fixed plates (31) are fixed to the bottom surface of the movable plate (28); and the self-adhesive tape (25) is glued and fixed to the top surface of the composite plate mold (4).

6. The grouting device for the polyurethane concrete prefabricated composite slab according to claim 5, characterized in that: The laminating assembly further comprises a tensioning plate (33), a sliding rod (34) and a spring (35); the top surface of the film roll (32) is slidably fitted with the tensioning plate (33); a plurality of sliding rods (34) are equidistantly fixed to the top surface of the tensioning plate (33); the sliding rods (34) are slidably sleeved inside another movable plate (28); springs (35) are sleeved on the sliding rods (34) between the bottom surface of the movable plate (28) and the top surface of the tensioning plate (33); the upper and lower ends of the springs (35) are respectively fixed to the tensioning plate (33) and the movable plate (28).

7. The grouting device for the polyurethane concrete prefabricated composite slab according to claim 1, characterized in that: A stirring motor (9) is installed at the center position of the top surface of the slurry tank (7), and the output end of the stirring motor (9) rotates and penetrates into the interior of the slurry tank (7). A rotating rod (36) is fixed to one end of the output end of the stirring motor (9) that penetrates into the interior of the slurry tank (7), and a plurality of stirring scrapers (40) are fixed at equal intervals on the outer surface of the rotating rod (36), and the outer surface of the stirring scraper (40) is slidably fitted with the inner wall of the slurry tank (7).

8. The grouting device for the polyurethane concrete prefabricated composite slab according to claim 3, characterized in that: The sum of the lengths of the adjusting screw (22) and the threaded sleeve (23) is greater than the distance between the bottom surface of the laminated plate mold (4) and the bottom surface of the base frame (1), and bubble levels (5) are installed on two mutually perpendicular side surfaces of the fixed support plate (3).

9. The grouting device for the polyurethane concrete prefabricated composite slab according to claim 5, characterized in that: The top surface of the flat material scraper (30) is provided with a plurality of engaging grooves (39) at equal intervals, a fixing block (37) is sleeved inside each of the engaging grooves (39), the top surface of each of the fixing blocks (37) is fixed to the bottom surface of the movable plate (28), a fixing screw (38) is fixed to the side of each of the fixing blocks (37), and a nut is threadedly sleeved on one end of each of the fixing screws (38) extending to the outside of the flat material scraper (30).

10. A grouting method for a grouting device for a polyurethane concrete prefabricated composite slab is obtained according to any one of claims 1 to 9, characterized in that: The grouting method comprises the following steps: Step A, installing the laminated plate mold (4), the flat material scraper (30) and the fixing plate (31); Step A1, first use two bubble levels (5) to determine whether the fixed support plate (3) is horizontal in two horizontal directions. When the fixed support plate (3) is not horizontally placed, place a pad to ensure that the fixed support plate (3) is horizontal; Step A2, after ensuring that the fixed support plate (3) is horizontal, the laminated plate mold (4) is placed horizontally on the top surface of the fixed support plate (3), and the fixed clamping plates (15) on both sides are pushed to drive the movable screw (17) to slide inside the adjustment groove (18), so that the shock-absorbing pad (16) abuts against both sides of the laminated plate mold (4), and after the laminated plate mold (4) is clamped and fixed by the fixed clamping plates (15) and the shock-absorbing pad (16), the fixing nut (19) is screwed so that the fixed clamping plates (15) and the fixing nut (19) cooperate to clamp and fix them on the fixed support plate (3); Step A3, selecting a corresponding flat material scraper (30) according to the size of the flat material scraper (30), then aligning the flat material scraper (30) and sleeved it on the fixed block (37) and the screw through the snap-fit ​​groove (39), and then screwing the nut onto the screw to clamp and fix the flat material scraper (30), so that the flat material scraper (30) can be installed on the bottom of the support plate (26), placing the film roll (32) between the two fixed plates (31), screwing the bolt so that the bolt thread penetrates the fixed plate (31), and then rotating and inserting it into the film roll (32); Step B, casting prefabricated composite slab; Step B1, first use a mortar pump to pour polyurethane concrete slurry into the slurry tank (7) through the feed port (8), then open the slide cylinder on the base frame (1), so that the slide cylinder operates to drive the fixed support plate (3) to slide on the guide rail (2), and drives the composite plate mold (4) to move below the grouting pipe (11), and then the slide cylinder on the inner bracket (14) operates to drive the movable bracket (12) to move, and at the same time open the control valve (10), so that the grouting pipe (11) reciprocates above the composite plate mold (4) to perform grouting; Step B2, opening the vibrating rod (29), the composite board mold (4) after grouting continues to move, and when it moves to the bottom of the vibrating rod (29), the hydraulic cylinder (27) above it operates to move the movable plate (28) downward, thereby driving the vibrating rod (29) to move downward, and vibrating the polyurethane concrete slurry after grouting; Step B3, at the same time, the hydraulic cylinder (27) above the leveling scraper (30) operates to drive the leveling scraper (30) to move downward, so as to level the vibrated polyurethane concrete slurry, and the fixed support plate (3) moves back and forth until the grouting is completed; Step C, film covering and curing; Step C1, after grouting is completed, the film on the film roll (32) is pulled so that the movable end of the film is attached to one end of the self-adhesive sticker (25) at the top of the laminated board mold (4), and the film is unrolled as the laminated board mold (4) moves, so that the film covers the scraped polyurethane concrete slurry; Step C2, when the film roll (32) is rotated and unrolled, the tension pressing plate (33) is always in contact with the outermost film under the push of the spring (35), ensuring that the film can be kept in a tense and open state when unrolling. After the film is coated on the laminated plate mold (4), the film is bonded to the adhesive (25), and the laminated plate mold (4) can be removed by cutting the film; Step D, separating the laminated plate mold (4); Step D1, after the lamination is completed, the fixing nut (19) is turned to release the clamping fixation of the fixing nut (19) on the fixed support plate (3), the fixing clamping plate (15) is pulled to both sides to release the fixation of the laminated plate mold (4), the laminated plate mold (4) is pushed, the support screw (20) at one end is moved out of the base frame (1), the fixing nut (19) on the support screw (20) at this end is turned to release the clamping fixation of the fixing nut (19) on the rotating sleeve (21), the rotating sleeve (21) is rotated, the adjusting screw (22) and the threaded sleeve (23) are rotated to be placed vertically, and then the threaded sleeve (23) is rotated to drive the pulley (24) to be vertically on the bottom surface, and then the fixing nut (19) is turned again to clamp and fix the rotating sleeve (21); Step D2, after the composite board mold (4) at one end is separated, the other end of the composite board mold (4) is rotated under the support of the pulley (24), and after one pulley (24) at the other end is lowered to support the composite board mold (4), the other pulley (24) is lowered to support the composite board mold (4), so that the two pulleys (24) at the other end are in contact with the bottom surface, the composite board mold (4) can be moved horizontally, and then the other composite board mold (4) can be installed on the fixed support plate (3) to continue casting.

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