Grouting device and grouting method for a polyurethane concrete precast composite slab

Abstract

The present invention relates to the technical field of polyurethane concrete precast composite slabs. The present application discloses a grouting device and a grouting method for polyurethane concrete precast composite slabs, including a chassis and a first guide rail. A fixed support plate is slidably connected to the top surface of the first guide rail. A separable composite slab mold is fixed inside the fixed support plate. An inner support is sleeved and installed in the middle of the chassis. In the present invention, through a rotatable and retractable adjusting screw, a threaded sleeve and a pulley, during pouring, the composite slab mold is clamped and fixed inside the fixed support plate. After pouring is completed, the adjusting screw, the threaded sleeve and the pulley are rotated, and the composite slab mold is supported by the adjusting screw, the threaded sleeve and the pulley, so that the composite slab mold can be horizontally and stably separated from the fixed support plate, facilitating the subsequent installation of the fixed support plate, solving the problem that the existing grouting device for polyurethane concrete precast composite slabs is inconvenient to separate the mold after grouting, and facilitating continuous batch operation of the grouting device.

Description

Technical Field

[0001] This invention application relates to the technical field of polyurethane concrete precast composite slabs, specifically a grouting device and grouting method for polyurethane concrete precast composite slabs. Background Art

[0002] ECO modified polyurethane concrete is a thermosetting mixture formed by mixing polyester-based polyurethane binder and a certain gradation of aggregates at room temperature. As a material completely free of asphalt, the binder is entirely composed of high molecular polymers and will not pollute the environment. A precast composite slab is an assembled monolithic floor slab formed by laminating a precast slab and a cast-in-place reinforced concrete layer. The precast composite slab cast with polyurethane concrete has excellent overall mechanical strength and is beneficial to solving problems such as delamination and shear resistance of steel bridge deck pavements.

[0003] According to a grouting device and method for a concrete precast composite slab with Chinese Patent Publication No.: 202410143940.X, it includes a frame body, a reciprocating mechanism, a vibrating mechanism, a grouting mechanism, and a scraping mechanism. The frame body includes C-shaped sliding rails. There are two groups of C-shaped sliding rails, and the positions of the two groups of C-shaped sliding rails are opposite. Both sides at the bottom of the two groups of C-shaped sliding rails are fixedly connected with support columns. By setting the reciprocating mechanism, the grouting mechanism, and the scraping mechanism to cooperate, the device can perform the leveling work while grouting. By setting the vibrating mechanism, four vibrating columns are used to vibrate during the grouting and leveling of the device to eliminate the voids in the slurry. No subsequent manual void elimination is required. At the same time, the vibration can also eliminate the air bubbles in the slurry, avoiding the situation of hollowing in the finished composite slab and ensuring the quality of the finished product.

[0004] After the grouting is completed, when the composite slab mold needs to be separated and left to stand for solidification, the current grouting device cannot effectively ensure the horizontal and stable separation of the composite slab mold at the same time. The time-consuming waiting for the precast composite slab to solidify and dry is relatively long, which is not convenient for subsequent grouting operations. Moreover, after the grouting is completed, the grouted precast composite slab cannot be cured and protected, thus not facilitating batch grouting processing. Summary of the Invention

[0005] In order to solve the problems that the existing grouting device for polyurethane concrete precast composite slabs is inconvenient to separate the mold after grouting and cannot cure the precast composite slab, the present invention provides a grouting device and grouting method for polyurethane concrete precast composite slabs to solve the above problems.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A grouting device and grouting method for a polyurethane concrete precast composite slab, including a chassis and a first guide rail. A fixed support plate is slidably connected to the top surface of the first guide rail. A separable composite slab mold is fixed inside the fixed support plate. An inner support is sleeved and installed in the middle of the chassis. A second guide rail is installed on the top surface of the inner support. A moving carriage is slidably connected to the second guide rail. A control valve is installed on the moving carriage. A grouting pipe is fixed to the output end of the control valve. An outer support is sleeved and installed outside the second guide rail. A slurry tank is fixedly installed on the top surface of the outer support. 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 fixedly penetrated through the top of the slurry tank. Support components are arranged on both sides of the composite slab mold for supporting the movement and separation of the composite slab mold. A vibrating and leveling component is installed on the side of the outer support away from the control valve.

[0008] Further, fixed clamping plates are symmetrically and slidably sleeved inside the fixed support plate. A moving screw is fixed to the bottom of each fixed clamping plate. Each moving screw is slidably inserted into an adjustment groove opened at the bottom of the fixed support plate. One end of each moving screw extending below the fixed support plate is threaded with a fixed nut. Shock pads are adhesively fixed to the opposite sides of the two fixed clamping plates.

[0009] Further, the support components include support screws, adjustment screws, threaded sleeves and pulleys. Support screws are symmetrically fixed on both sides of the composite slab mold. A rotating sleeve block is rotatably sleeved on each support screw. An adjustment screw is fixed to the side of each rotating sleeve block. A threaded sleeve is threadedly sleeved on each adjustment screw. A pulley is fixed to the end of the threaded sleeve away from the support screw. Another fixed nut is threadedly sleeved on the support screw on the side of each rotating sleeve block.

[0010] Further, the vibrating and leveling component includes a vibrating rod and a leveling scraper. A support plate is fixed on the side of the outer support away from the control valve. Hydraulic cylinders are symmetrically installed on the top of the support plate. The output ends of the two hydraulic cylinders slidably penetrate below the support plate. One end of the output end of the hydraulic cylinder penetrating below the support plate is fixed with a moving plate. A number of vibrating rods are equidistantly installed on the bottom surface of the moving plate close to the control valve side. A separable leveling scraper is fixed to the bottom surface of the other moving plate. A film covering component is arranged on the side of the leveling scraper away from the vibrating rod.

[0011] Further, the film covering component includes an adhesive, a leveling scraper and a fixing plate. A film roll is arranged on the side of the leveling scraper away from the vibrating rod. The front and rear ends of the film roll are rotatably connected with fixing plates through rotation. Bolts are threadedly sleeved on the two fixing plates. The front and rear ends of the film roll are rotatably sleeved on the bolts. The top surfaces of the fixing plates are fixedly arranged on the bottom surface of the moving plate. An adhesive is adhesively fixed to the top surface of the composite slab mold.

[0012] Further, the film covering assembly further includes a tension pressing plate, a sliding rod, and a spring. The top surface of the film roll is slidably attached to the tension pressing plate. A plurality of sliding rods are equidistantly fixed on the top surface of the tension pressing plate. The sliding rods are all slidably sleeved inside another moving plate. Springs are sleeved on the sliding rods between the bottom surface of the other moving plate and the top surface of the tension pressing plate. The upper and lower ends of the springs are respectively fixed on the tension pressing plate and the moving plate.

[0013] Further, a stirring motor is installed at the central position of the top surface of the slurry tank. The output end of the stirring motor rotates through to the inside of the slurry tank. One end of the output end of the stirring motor that penetrates into the slurry tank is fixed with a rotating rod. A plurality of stirring scrapers are equidistantly fixed on the outer surface of the rotating rod. The outer surface of the stirring scraper is slidably attached to the inner wall of the slurry tank.

[0014] Further, the sum of the lengths of the adjusting screw rod and the threaded sleeve is greater than the distance between the bottom surface of the laminated plate mold and the bottom surface of the chassis. Bubble levels are installed on two mutually perpendicular sides of the fixed support plate.

[0015] Further, a plurality of clamping grooves are equidistantly formed on the top surface of the leveling scraper. A fixing block is sleeved inside each clamping groove. The top surface of each fixing block is fixed on the bottom surface of the moving plate. A fixing screw rod is fixed on the side of each fixing block. Nuts are threadedly sleeved on one end of each fixing screw rod extending to the outside of the leveling scraper.

[0016] Further, a grouting method for a grouting device of a polyurethane concrete precast laminated plate, the grouting method includes the following steps:

[0017] Step A, install the laminated plate mold, the leveling scraper, and the fixing plate;

[0018] Step A1, first judge whether the fixed support plate is horizontal in two horizontal directions through two bubble levels. When the fixed support plate is not horizontally placed, ensure the horizontality of the fixed support plate by placing shims.

[0019] Step A2, after ensuring the horizontality of the fixed support plate, horizontally place the laminated plate mold on the top surface of the fixed support plate. Push the fixed clamping plates on both sides to drive the moving screw rod to slide inside the adjusting groove, so that the shock-absorbing pads abut against both sides of the laminated plate mold. After clamping and fixing the laminated plate mold through the fixed clamping plates and the shock-absorbing pads, turn the fixing nut so that the fixed clamping plate and the fixing nut cooperate to clamp and fix on the fixed support plate;

[0020] Step A3: Select the corresponding flat material scraper according to the size of the flat material scraper, then align and sleeved the flat material scraper on the fixed block and the screw through the clamping groove, and then screw the nut onto the screw to clamp and fix the flat material scraper, so that the flat material scraper can be installed at the bottom of the support plate. Place the film roll between the two fixed plates, screw the bolt, and after the bolt thread penetrates through the fixed plate, rotate and insert it into the film roll;

[0021] Step B: Pour the precast composite slab;

[0022] Step B1: First, use a mortar pump to pour the polyurethane concrete slurry into the slurry tank through the feed port, and then open the sliding table cylinder on the chassis, so that the operation of the sliding table cylinder drives the fixed support plate to slide on the first guide rail. When driving the composite slab mold to move under the grouting pipe, the sliding cylinder on the inner support runs to drive the moving carriage to move, and at the same time, open the control valve, so that the grouting pipe reciprocates above the composite slab mold for grouting;

[0023] Step B2: Turn on the vibrating rod. After grouting, the composite slab mold continues to move. When it moves under the vibrating rod, the hydraulic cylinder above it runs to move the moving plate downward, so as to drive the vibrating rod downward to vibrate the grouted polyurethane concrete slurry;

[0024] Step B3: At the same time, the hydraulic cylinder above the flat material scraper runs to drive the flat material scraper downward to scrape the grouted polyurethane concrete slurry flat, and the fixed support plate reciprocates until the grouting is completed;

[0025] Step C: Film curing;

[0026] Step C1: After the grouting is completed, pull the film on the film roll so that the free end of the film fits one end of the non-drying glue at the top of the composite slab mold. As the composite slab mold moves, pull the film to unwind, so that the film covers the grouted and scraped polyurethane concrete slurry;

[0027] Step C2: When the film roll rotates and unwinds, under the push of the spring, the tension pressing plate always abuts against the outermost layer of the film to ensure that the film can maintain a tense and open state when unwinding. After the film is covered on the composite slab mold, the film adheres to the non-drying glue, cut the film, and then the composite slab mold can be removed;

[0028] Step D: Separate the composite slab mold;

[0029] Step D1: After the film covering is completed, turn the fixing nut to release the clamping and fixing of the fixing nut on the fixing support plate. Pull the fixing clamping plates to both sides to release the fixing of the laminated plate mold. Push the laminated plate mold so that the support screw at one end moves out of the chassis. Turn the fixing nut on the support screw at this end to release the clamping and fixing of the fixing nut on the rotating sleeve block. Rotate the rotating sleeve block to rotate the adjusting screw and the threaded sleeve to the vertical position. Then rotate the threaded sleeve to drive the pulley to the vertical bottom surface on the bottom surface. Then turn the fixing nut again to clamp and fix the rotating sleeve block again;

[0030] Step D2: After one end of the laminated plate mold is separated, rotate the other end of the laminated plate mold under the support of the pulley. After lowering one pulley at the other end to support the laminated plate mold, lower the other pulley to support the laminated plate mold so that the two pulleys at the other end abut against the bottom surface, and then the laminated plate mold can be horizontally removed. Then install another laminated plate mold on the fixing support plate to continue pouring.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. In the present invention, through the rotatable retractable adjusting screw, threaded sleeve and pulley, during pouring, the laminated plate mold is clamped and fixed inside the fixing support plate. After pouring is completed, rotate the adjusting screw, threaded sleeve and pulley, and support the laminated plate mold through the adjusting screw, threaded sleeve and pulley, and then the laminated plate mold can be horizontally and stably separated from the fixing support plate, which is convenient for the subsequent installation of the fixing support plate, solves the problem that the existing grouting device for polyurethane concrete precast laminated plates is inconvenient to separate the mold after grouting, and is convenient for the grouting device to perform continuous batch operations.

[0033] 2. In the present invention, through the cooperation of the vibrating rod and the leveling scraper, after pouring is completed, the concrete slurry can be vibrated and leveled in time, without manual operation by workers, and the detachable design of the leveling scraper is convenient for adjustment according to the size of the laminated plate mold, improving the applicability of the grouting device.

[0034] 3. In the present invention, through the film covering component, after pouring is completed, film is covered on the surface of the fixing support plate, which can promote the hydration effect of concrete and play a role in crack prevention and moisture retention during the concrete curing process, solves the problem that the existing grouting device for polyurethane concrete precast laminated plates cannot cure the precast laminated plates after grouting, and improves the practicability of the grouting device.

[0035] 4. In the present invention, through the rotating rod and the stirring scraper inside the slurry tank, during grouting, stirring can be carried out to avoid the stagnation of the polyurethane concrete slurry inside. And after grouting is completed, after injecting clean water into the slurry tank, the inner wall of the slurry tank is cleaned by rotating the rotating rod and the stirring scraper, which is convenient for the normal maintenance of the grouting device. Description of the Drawings

[0036] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0037] Figure 1 It is a left three-dimensional structural schematic diagram of a grouting device according to an embodiment of the present application;

[0038] Figure 2 is Figure 1 The right three-dimensional structural schematic diagram of the grouting device in the illustrated embodiment;

[0039] Figure 3 is Figure 1 The bottom three-dimensional structural perspective view of the fixed support plate in the illustrated embodiment;

[0040] Figure 4 is Figure 1 The three-dimensional structural schematic diagram when the laminated board mold is separated in the illustrated embodiment;

[0041] Figure 5 is Figure 1 The bottom structural perspective view of the vibrating and scraping component in the illustrated embodiment;

[0042] Figure 6 is Figure 1 The connection structural schematic diagram of the film covering component in the illustrated embodiment;

[0043] Figure 7 is Figure 1 The partial structural split schematic diagram of the vibrating and scraping component in the illustrated embodiment;

[0044] Figure 8 is Figure 1 The sectional structural schematic diagram of the slurry tank in the illustrated embodiment.

[0045] Meanings of the reference numerals in the figures: 1, chassis; 2, first guide rail; 3, fixed support plate; 4, laminated plate mold; 5, bubble level; 6, outer support; 7, slurry tank; 8, feed inlet; 9, stirring motor; 10, control valve; 11, grouting pipe; 12, moving support; 13, second guide rail; 14, inner support; 15, fixed clamping plate; 16, shock pad; 17, moving screw; 18, adjustment groove; 19, fixed nut; 20, support screw; 21, rotating sleeve block; 22, adjustment screw; 23, threaded sleeve; 24, pulley; 25, adhesive; 26, support plate; 27, hydraulic cylinder; 28, moving plate; 29, vibrating rod; 30, flat material scraper; 31, fixed plate; 32, film roll; 33, tension pressing plate; 34, sliding rod; 35, spring; 36, rotating rod; 37, fixed block; 38, fixed screw; 39, engaging groove; 40, stirring scraper. Detailed implementation manner

[0046] To make the application purpose, features, and advantages of the present application more obvious and understandable, 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 a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0047] Referring to Figures 1 to 8 , a grouting device and grouting method for a polyurethane concrete precast laminated plate, including a chassis 1 and a first guide rail 2. A fixed support plate 3 is slidably connected to the top surface of the first guide rail 2. A separable laminated plate mold 4 is fixed inside the fixed support plate 3. An inner support 14 is sleeved and installed in the middle of the chassis 1. A second guide rail 13 is installed on the top surface of the inner support 14. A moving support 12 is slidably connected to the second guide rail 13. A control valve 10 is installed on the moving support 12. A grouting pipe 11 is fixed to the output end of the control valve 10. An outer support 6 is sleeved and installed outside the second guide rail 13. A slurry tank 7 is fixedly installed on the top surface of the outer support 6. A stirring motor 9 is installed at the center position on the top surface of the slurry tank 7. The output end of the stirring motor 9 rotates through to the inside of the slurry tank 7. One end of the output end of the stirring motor 9 passing through to the inside of the slurry tank 7 is fixed with a rotating rod 36. A plurality of stirring scrapers 40 are equidistantly fixed on the outer surface of the rotating rod 36. The outer surface of the stirring scraper 40 is slidably attached to the inner wall of the slurry tank 7. The bottom output end of the slurry tank 7 is connected to the input end of the control valve 10 through a hose. The top of the slurry tank 7 is fixedly penetrated with a feed inlet 8. Support components are arranged on both sides of the laminated plate mold 4 for supporting the movement and separation of the laminated plate mold 4. A vibrating and leveling component is installed on the side of the outer support 6 away from the control valve 10.

[0048] Specifically, fixed clamping plates 15 are symmetrically and slidably sleeved inside the fixed support plate 3. A moving screw 17 is fixed to the bottom of each fixed clamping plate 15. Each moving screw 17 is slidably inserted into an adjustment groove 18 opened at the bottom of the fixed support plate 3. A fixed nut 19 is threaded on one end of each moving screw 17 extending below the fixed support plate 3. Shock pads 16 are adhesively fixed to the opposite sides of the two fixed clamping plates 15.

[0049] As an optimized solution, the support assembly includes support screws 20, adjustment screws 22, threaded sleeves 23, and pulleys 24. Support screws 20 are symmetrically and fixedly arranged on both sides of the laminated board mold 4. A rotating sleeve block 21 is rotatably sleeved on each support screw 20. An adjustment screw 22 is fixed to the side of each rotating sleeve block 21. A threaded sleeve 23 is threaded on each adjustment screw 22. The sum of the lengths of the adjustment screw 22 and the threaded sleeve 23 is greater than the distance between the bottom surface of the laminated board mold 4 and the bottom surface of the chassis 1. Bubble levels 5 are installed on two mutually perpendicular sides of the fixed support plate 3. A pulley 24 is fixed to one end of the threaded sleeve 23 away from the support screw 20. Another fixed nut 19 is threaded on the support screw 20 on the side of each rotating sleeve block 21.

[0050] As a further optimized solution, the vibrating and leveling component includes a vibrating rod 29 and a leveling scraper 30. A support plate 26 is fixed to the side of the outer support 6 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 slidably penetrate to the lower side of the support plate 26. A moving plate 28 is fixed to one end of the output end of the hydraulic cylinder 27 penetrating to the lower side of the support plate 26. A number of vibrating rods 29 are equidistantly installed on the bottom surface of the moving plate 28 near the control valve 10. A detachable leveling scraper 30 is fixed to the bottom surface of the other moving plate 28. A film covering component is arranged on the side of the leveling scraper 30 away from the vibrating rod 29.

[0051] As a further optimized solution, the film covering component includes self - adhesive 25, a leveling scraper 30, and a fixing plate 31. A film roll 32 is arranged on the side of the leveling scraper 30 away from the vibrating rod 29. The front and rear ends of the film roll 32 are rotatably connected to fixing plates 31 through rotation. Bolts are threaded on the two fixing plates 31. The front and rear ends of the film roll 32 are rotatably sleeved on the bolts. The top surfaces of the fixing plates 31 are fixedly attached to the bottom surface of the moving plate 28. Self - adhesive 25 is adhesively fixed to the top surface of the laminated board mold 4. A number of engaging grooves 39 are equidistantly opened on the top surface of the leveling scraper 30. A fixing block 37 is sleeved inside each engaging groove 39. The top surface of each fixing block 37 is fixedly attached to the bottom surface of the moving plate 28. A fixing screw 38 is fixed to the side of each fixing block 37. A nut is threaded on one end of each fixing screw 38 extending outside the leveling scraper 30.

[0052] The film covering assembly further includes a tension pressing plate 33, a sliding rod 34, and a spring 35. The tension pressing plate 33 is slidably attached to the top surface of the film roll 32. A plurality of sliding rods 34 are fixedly arranged at equal intervals on the top surface of the tension pressing plate 33. The sliding rods 34 are all slidably sleeved inside another moving plate 28. Springs 35 are sleeved on the sliding rods 34 between the bottom surface of the other moving plate 28 and the top surface of the tension pressing plate 33. The upper and lower ends of the springs 35 are respectively fixed to the tension pressing plate 33 and the moving plate 28.

[0053] Working principle: During grouting, first use the 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, ensure the horizontality of the fixed support plate 3 by placing shims. After ensuring the horizontality of the fixed support plate 3, place the laminated board mold 4 horizontally on the top surface of the fixed support plate 3. Push the fixed clamping plates 15 on both sides to drive the moving screw 17 to slide inside the adjustment slot 18, so that the shock pads 16 abut against both sides of the laminated board mold 4. After clamping and fixing the laminated board mold 4 with the fixed clamping plates 15 and the shock pads 16, turn the fixing nut 19 to make the fixed clamping plate 15 cooperate with the fixing nut 19 to be clamped and fixed on the fixed support plate 3. Select the corresponding leveling scraper 30 according to the size of the leveling scraper 30, and then align and sleeve the leveling scraper 30 on the fixed block 37 and the screw through the engaging groove 39, and then turn the nut onto the screw to clamp and fix the leveling scraper 30, so that the leveling scraper 30 can be installed at the bottom of the support plate 26. Place the film roll 32 between the two fixing plates 31. Turn the bolt so that the bolt thread penetrates through the fixing plate 31 and then rotates and inserts into the film roll 32;

[0054] Then pour the precast laminated board. First, use a mortar pump to pump the polyurethane concrete slurry into the slurry tank 7 through the feed port 8. Then open the sliding table cylinder on the chassis 1 to make the sliding table cylinder operate to drive the fixed support plate 3 to slide on the guide rail 1. When driving the laminated board mold 4 to move under the grouting pipe 11, the sliding cylinder on the inner support 14 operates to drive the moving carriage 12 to move. At the same time, open the control valve 10 to make the grouting pipe 11 reciprocate above the laminated board mold 4 for grouting. Turn on the vibrating rod 29. After grouting, the laminated board mold 4 continues to move. When it moves under the vibrating rod 29, the hydraulic cylinder 27 above it operates to lower the moving plate 28, thereby driving the vibrating rod 29 to move downward to vibrate the grouted polyurethane concrete slurry. At the same time, the hydraulic cylinder 27 above the leveling scraper 30 operates to drive the leveling scraper 30 to move downward to scrape the vibrated polyurethane concrete slurry flat. The fixed support plate 3 reciprocates until the grouting is completed;

[0055] After the grouting is completed, pull the film on the film roll 32 so that the free end of the film fits against one end of the self-adhesive 25 at the top of the laminated board mold 4. As the laminated board mold 4 moves, pull the film to unwind, so that the film covers the smoothed polyurethane concrete slurry. When the film roll 32 rotates and unwinds, under the push of the spring 35, the tension pressing plate 33 always abuts against the outermost film, ensuring that the film can maintain a tense and open state during unwinding. After the film covering on the laminated board mold 4 is completed, the film adheres to the self-adhesive 25, cut the film, and then the laminated board mold 4 can be removed;

[0056] After the film covering is completed, turn the fixing nut 19 to release the clamping and fixing of the fixing nut 19 on the fixing support plate 3. Pull the fixing clamping plates 15 to both sides to release the fixing of the laminated board mold 4. Push the laminated board mold 4, and the support screw rod 20 at one end moves out of the bottom frame 1. Turn the fixing nut 19 on the support screw rod 20 at this end to release the clamping and fixing of the fixing nut 19 on the rotating sleeve block 21. Rotate the rotating sleeve block 21 to turn the adjusting screw rod 22 and the threaded sleeve 23 to a vertical position, then rotate the threaded sleeve 23 to drive the vertical bottom surface of the pulley 24 to be on the bottom surface. Then turn the fixing nut 19 again to clamp and fix the rotating sleeve block 21. After one end of the laminated board mold 4 is separated, under the support of the pulley 24, rotate the other end of the laminated board mold 4, lower and support the other pulley 24 at the other end to support the laminated board mold 4 to form a triangular support, and then lower and support the other pulley 24 to make the two pulleys 24 at the other end abut against the bottom surface, and then the laminated board mold 4 can be horizontally moved away. Then install another laminated board mold 4 on the fixing support plate 3 and continue the pouring.

[0057] For those skilled in the art, it is obvious that this application is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of this application, this application can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of this application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the same elements of the claims are intended to be included in this application. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0058] As mentioned above, the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit it; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A grouting device for a polyurethane concrete precast composite slab, characterized in that: It includes a chassis (1) and a first guide rail (2). A fixed support plate (3) is slidably connected to the top surface of the first guide rail (2). A separable laminated plate mold (4) is fixed inside the fixed support plate (3). An inner support (14) is sleeved and installed in the middle of the chassis (1). A second guide rail (13) is installed on the top surface of the inner support (14). A moving carriage (12) is slidably connected to the second guide rail (13). A control valve (10) is installed on the moving carriage (12). A grouting pipe (11) is fixed to the output end of the control valve (10). An outer support (6) is sleeved and installed outside the second guide rail (13). A slurry tank (7) is fixedly installed on the top surface of the outer support (6). The bottom output end of the slurry tank (7) is connected to the input end of the control valve (10) through a hose. A feed port (8) is fixedly penetrated through the top of the slurry tank (7). Support components are arranged on both sides of the laminated plate mold (4) for supporting the movement and separation of the laminated plate mold (4). A vibrating and leveling component is installed on the side of the outer support (6) away from the control valve (10). Fixed clamping plates (15) are symmetrically and slidably sleeved inside the fixed support plate (3). A moving screw rod (17) is fixed to the bottom of each fixed clamping plate (15). Each moving screw rod (17) is slidably inserted into an adjustment groove (18) opened at the bottom of the fixed support plate (3). A fixed nut (19) is threaded on one end of each moving screw rod (17) extending below the fixed support plate (3). Shock pads (16) are adhesively fixed to the opposite sides of the two fixed clamping plates (15). The support components include support screw rods (20), adjustment screw rods (22), threaded sleeves (23), and pulleys (24). Support screw rods (20) are symmetrically and fixedly installed on both sides of the laminated plate mold (4). A rotating sleeve block (21) is rotatably sleeved on each support screw rod (20). An adjustment screw rod (22) is fixed to the side of each rotating sleeve block (21). A threaded sleeve (23) is threaded on each adjustment screw rod (22). A pulley (24) is fixed to one end of each threaded sleeve (23) away from the support screw rod (20). Another fixed nut (19) is threaded on the support screw rod (20) on the side of each rotating sleeve block (21).

2. The grouting device for the polyurethane concrete precast composite slab according to claim 1, characterized in that: The vibrating and leveling component includes vibrating rods (29) and a leveling scraper (30). A support plate (26) is fixed to the side of the outer support (6) 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 to the lower side of the support plate (26). A moving plate (28) is fixed to one end of the output end of each hydraulic cylinder (27) penetrating through to the lower side of the support plate (26). A number of vibrating rods (29) are equidistantly installed on the bottom surface of the moving plate (28) near the control valve (10). A detachable leveling scraper (30) is fixed to the bottom surface of the other moving plate (28). A film covering component is arranged on the side of the leveling scraper (30) away from the vibrating rods (29).

3. The grouting device for the polyurethane concrete precast composite slab according to claim 2, characterized in that: The film covering assembly includes an adhesive (25), a flat material scraper (30) and a fixing plate (31). A film roll (32) is arranged on a side of the flat material scraper (30) away from the vibrating rod (29). Both the front and rear ends of the film roll (32) are rotatably connected to the fixing plate (31) through rotation. Bolts are threadedly sleeved on both of the fixing plates (31). Both the front and rear ends of the film roll (32) are rotatably sleeved on the bolts. The top surfaces of the fixing plates (31) are fixedly connected to the bottom surface of the moving plate (28). The adhesive (25) is adhesively fixed to the top surface of the laminated plate mold (4).

4. The grouting device for the polyurethane concrete precast composite slab according to claim 3, characterized in that: The film covering assembly further includes a tension pressing plate (33), a sliding rod (34) and a spring (35). The tension pressing plate (33) is slidably attached to the top surface of the film roll (32). A plurality of sliding rods (34) are fixedly arranged at equal intervals on the top surface of the tension pressing plate (33). The sliding rods (34) are all slidably sleeved inside another moving plate (28). Springs (35) are sleeved on the sliding rods (34) between the bottom surface of the other moving plate (28) and the top surface of the tension pressing plate (33). The upper and lower ends of the springs (35) are respectively fixed to the tension pressing plate (33) and the moving plate (28).

5. The grouting device for the polyurethane concrete precast composite slab according to claim 4, characterized in that: A stirring motor (9) is installed at the central position of the top surface of the slurry tank (7). The output end of the stirring motor (9) rotatably penetrates into the slurry tank (7). A rotating rod (36) is fixed to the end of the output end of the stirring motor (9) penetrating into the slurry tank (7). A plurality of stirring scrapers (40) are fixedly arranged at equal intervals on the outer surface of the rotating rod (36). The outer surface of the stirring scrapers (40) is slidably attached to the inner wall of the slurry tank (7).

6. The grouting device for the polyurethane concrete precast composite slab according to claim 5, characterized in that: The sum of the lengths of the adjusting screw rod (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 chassis (1). Bubble levels (5) are installed on two mutually perpendicular side surfaces of the fixed support plate (3).

7. The grouting device for the polyurethane concrete precast composite slab according to claim 6, characterized in that: A plurality of engaging grooves (39) are formed at equal intervals on the top surface of the flat material scraper (30). A fixing block (37) is sleeved inside each of the engaging grooves (39). The top surface of each fixing block (37) is fixedly connected to the bottom surface of the moving plate (28). A fixing screw rod (38) is fixed to the side of each fixing block (37). Nuts are threadedly sleeved on one ends of the fixing screw rods (38) extending to the outside of the flat material scraper (30).

8. A grouting method for a grouting device of a polyurethane concrete precast composite slab obtained from the grouting device of the polyurethane concrete precast composite slab according to claim 7, characterized in that: The grouting method includes the following steps: Step A: Install the laminated plate mold (4), the flat material scraper (30) and the fixing plate (31); Step A1: First, determine whether the fixed support plate (3) is horizontal in two horizontal directions through the two bubble levels (5). When the fixed support plate (3) is not horizontally placed, ensure the horizontal placement of the fixed support plate (3) by placing a cushion plate. Step A2. After ensuring that the fixed pallet (3) is horizontal, place the laminated board mold (4) horizontally on the top surface of the fixed pallet (3). Push the fixed clamping plates (15) on both sides to drive the movable screw rod (17) to slide inside the adjustment groove (18), so that the shock pads (16) abut against both sides of the laminated board mold (4). After clamping and fixing the laminated board mold (4) through the fixed clamping plates (15) and the shock pads (16), turn the fixed nuts (19) so that the fixed clamping plates (15) cooperate with the fixed nuts (19) to be clamped and fixed on the fixed pallet (3). Step A3. Select the corresponding flatting scraper (30) according to the size of the flatting scraper (30). Then, align and sleeved the flatting scraper (30) on the fixed block (37) and the screw rod through the clamping groove (39). Then, turn the nut onto the screw rod to clamp and fix the flatting scraper (30), and the flatting scraper (30) can be installed at the bottom of the support plate (26). Place the film roll (32) between the two fixed plates (31). Turn the bolt so that the bolt thread penetrates through the fixed plate (31) and then rotate it to be inserted into the film roll (32). Step B. Pour the precast laminated board. Step B1. First, use a mortar pump to pour the polyurethane concrete slurry into the slurry tank (7) through the feed port (8). Then, open the sliding table cylinder on the chassis (1) so that the sliding table cylinder runs to drive the fixed pallet (3) to slide on the guide rail 1 (2). When driving the laminated board mold (4) to move below the grouting pipe (11), the sliding cylinder on the inner support (14) runs to drive the movable carriage (12) to move. At the same time, open the control valve (10) so that the grouting pipe (11) reciprocates above the laminated board mold (4) for grouting. Step B2. Turn on the vibrating rod (29). After grouting, the laminated board mold (4) continues to move. When it moves below the vibrating rod (29), the hydraulic cylinder (27) above it runs to lower the moving plate (28), thereby driving the vibrating rod (29) to move down to vibrate the grouted polyurethane concrete slurry. Step B3. At the same time, the hydraulic cylinder (27) above the flatting scraper (30) runs to drive the flatting scraper (30) to move down to scrape the vibrated polyurethane concrete slurry flat. The fixed pallet (3) reciprocates until the grouting is completed. Step C. Film curing Step C1. After the grouting is completed, pull the film on the film roll (32) so that the free end of the film fits one end of the self-adhesive (25) at the top of the laminated board mold (4). As the laminated board mold (4) moves, pull the film to unwind, so that the film covers the scraped polyurethane concrete slurry. Step C2. When the film roll (32) rotates and unwinds, under the push of the spring (35), the tension pressing plate (33) always abuts against the outermost layer of the film to ensure that the film can maintain a tense and open state when unwinding. After the film is covered on the laminated board mold (4), the film adheres to the self-adhesive (25), and the film is cut, and the laminated board mold (4) can be removed. Step D. Separate the laminated board mold (4) Step D1: After the film covering is completed, turn the fixing nut (19) to release the clamping and fixing of the fixing nut (19) on the fixing support plate (3). Pull the fixing clamping plates (15) to both sides to release the fixing of the laminated plate mold (4). Push the laminated plate mold (4) so that the support screw rod (20) at one end moves out of the chassis (1). Turn the fixing nut (19) on the support screw rod (20) at this end to release the clamping and fixing of the fixing nut (19) on the rotating sleeve block (21). Rotate the rotating sleeve block (21) to rotate the adjusting screw rod (22) and the threaded sleeve (23) to a vertical position. Then rotate the threaded sleeve (23) to drive the vertical bottom surface of the pulley (24) to the bottom surface. Then turn the fixing nut (19) again to clamp and fix the rotating sleeve block (21) again. Step D2: After one end of the laminated plate mold (4) is separated, rotate the other end of the laminated plate mold (4) under the support of the pulley (24). After lowering and supporting the laminated plate mold (4) with one pulley (24) at the other end, lower and support the laminated plate mold (4) with the other pulley (24) so that the two pulleys (24) at the other end are in contact with the bottom surface, and then the laminated plate mold (4) can be horizontally removed. Then install another laminated plate mold (4) on the fixing support plate (3) to continue the pouring.

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