Grouting device and method for prefabricated concrete composite slab
By designing a grouting device that automatically smooths and eliminates gaps, the problem of manual operation after grouting of concrete prefabricated laminated plates is solved, the production efficiency and finished product quality are improved, and human resource consumption is reduced.
Patent Information
- Application Number
- CN202410143940.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-01
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2044-02-01
AI Technical Summary
The concrete prefabricated laminated plate needs to be manually smoothed and cleared after grouting, resulting in unstable quality of the finished product, affecting processing efficiency and increasing production costs.
A grouting device including a reciprocating mechanism, a grouting mechanism, a vibrating mechanism and a scraping mechanism is designed to automatically smooth and eliminate gaps through hydraulic cylinders, drive motors and vibrating columns to reduce manual operation.
Improve production efficiency, ensure the quality of the finished product, reduce human resource consumption, and avoid hollowing.
Smart Images

Figure CN118528385B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of concrete prefabricated slab processing, and in particular to a grouting device and method for a concrete prefabricated composite slab. Background Art
[0002] Precast concrete composite slabs are a type of prefabricated component used in building structures. They have the advantages of fast construction speed, controllable quality, reduced on-site construction processes and lower labor costs. They can achieve standardization and modularization of engineering construction, improve engineering efficiency and quality, and are widely used in the construction field.
[0003] In the current processing of prefabricated concrete composite panels, manual smoothing and gap elimination are required after the slurry is injected into the mold. Due to the inevitable subjective factors in manual operation, there are differences in the smoothing effect and gap elimination quality of each operator, resulting in unstable quality of the composite panels. In addition, manual operation requires a lot of time and human resources, which increases the production cycle and production cost of the prefabricated concrete composite panels. In view of this, a grouting device and method for prefabricated concrete composite panels are proposed. Summary of the invention
[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.
[0005] The present invention has been proposed in view of the above-mentioned problems.
[0006] Therefore, the object of the present invention is to provide a grouting device and method for a precast concrete composite slab, which is used to solve the problem that the precast concrete composite slab needs to be manually smoothed and gap eliminated after grouting, resulting in unstable quality of the finished composite slab, affecting the processing efficiency of the precast concrete composite slab, and high labor and time costs.
[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a grouting device for a prefabricated concrete composite slab, comprising:
[0008] The frame includes a C-shaped slide rail, wherein two groups of the C-shaped slide rails are provided, and the two groups of the C-shaped slide rails are located opposite to each other. Support columns are fixedly connected to both sides of the bottom of the two groups of the C-shaped slide rails, and a sliding plate is slidably provided between the two groups of the C-shaped slide rails. A composite plate mold is detachably connected to the top of the sliding plate. Two groups of columns are fixedly connected to the outer sides of the two groups of the C-shaped slide rails. The four groups of columns are distributed in a rectangular shape. A mounting beam is fixedly connected between the two groups of columns on the opposite sides and located opposite to each other. The two groups of mounting beams are located above the composite plate mold. A mounting plate is also fixedly connected between the four groups of columns, and the mounting plate is located below the sliding plate.
[0009] The reciprocating mechanism comprises a push-pull slat, the push-pull slat is fixedly connected to the bottom center of the sliding plate and is vertically arranged with the C-shaped slide rail, the top of the mounting plate is rotatably connected with a worm gear, the top of the worm gear shaft is fixedly connected with a connecting slat, the top of the connecting slat away from the worm gear is fixedly connected with a push-pull column, the push-pull slat surface is provided with a primary push-pull groove along the length direction, the push-pull column is slidably arranged on the inner side of the primary push-pull groove, the top of the mounting plate is also fixedly connected with two groups of vertical plates arranged opposite to each other, one group of the vertical plates is fixedly connected with a driving motor on the outer side, the vertical plates are provided with a through hole at a position opposite to the driving motor shaft, the driving motor shaft passes through the through hole, a worm is rotatably connected between the two groups of vertical plates, the worm is fixedly connected to the driving motor shaft, and the worm and the worm gear are meshed with each other;
[0010] A vibrating mechanism, wherein two groups of vibrating mechanisms are symmetrically arranged below the sliding plate and the two groups of vibrating mechanisms are respectively located close to two groups of C-shaped slide rails, the vibrating mechanism comprises a shell, the shell is fixedly connected to the top of the mounting plate, and two groups of movable cavities are opened on the top of the shell in the vertical direction, slide cylinders are slidably connected to the inner sides of the two groups of movable cavities, vibrating columns are slidably arranged on the inner sides of the two groups of slide cylinders, and the two groups of vibrating columns extend out of the corresponding slide cylinders, and a stop block is fixedly connected to the bottom of the vibrating column, and the stop block is slidably connected in the slide cylinder, and the top of the slide cylinder has a flange extending inward, and the top of the stop block abuts against the flange, and a return spring is also arranged in the slide cylinder, and the two ends of the return spring abut against the bottom of the stop block and the inner wall of the bottom of the slide cylinder respectively, and the shell is close to adjacent C-shaped slide rails and facing The positions of the two groups of slide cylinders are provided with movable grooves in the vertical direction, the side walls of the two groups of slide cylinders are fixedly connected with connecting blocks, the two groups of connecting blocks respectively pass through the two groups of movable grooves, and the two groups of connecting blocks are fixedly connected with driving slats on the side away from the slide cylinders, the driving slats and the C-shaped slide rails are arranged parallel to each other, the bottom of the sliding plate is fixedly connected with a rack, the rack and the C-shaped slide rails are arranged parallel to each other, and the bottom of the C-shaped slide rail adjacent to the position of the shell is fixedly connected with a mounting column, the bottom of the mounting column is fixedly connected to the mounting plate, the side of the mounting column close to the driving slat is rotatably connected with a driving gear, and the side of the driving gear close to the driving slat is fixedly connected with a driving column, the drive slat surface is provided with a secondary push-pull groove along the length direction, and the driving column is slidably arranged on the inner side of the secondary push-pull groove;
[0011] The grouting mechanism comprises a fixed plate, which is fixedly connected to the top of two groups of mounting beams, a hydraulic cylinder is fixedly connected to the top of the fixed plate, an opening is provided on the fixed plate opposite to the position of the hydraulic cylinder piston rod, the hydraulic cylinder piston rod passes through the opening, a slurry pot is fixedly connected to the bottom end of the hydraulic cylinder piston rod, a hydraulic gate valve is fixedly connected to the bottom of the slurry pot, a discharge pipe is fixedly connected to the bottom of the hydraulic gate valve, a slurry box is arranged directly below the discharge pipe, the slurry box is strip-shaped and is perpendicularly arranged to the C-shaped slide rail, a slurry inlet pipe is fixedly connected to the top of the slurry box, and the slurry inlet pipe is slidably sleeved on the discharge pipe The outer side, the inner side of the top of the slurry inlet pipe has a flange extending inward, the bottom of the discharge pipe is fixedly sleeved with a limit ring, the limit ring is slidably connected to the inner side of the slurry inlet pipe, the bottom of the slurry box is equidistantly fixedly connected with multiple groups of grouting pipes along its length direction, the discharge pipe and the outer side of the slurry inlet pipe are fixedly sleeved with abutment plates, abutment springs are arranged between the two groups of abutment plates, the abutment springs are sleeved on the outer side of the slurry inlet pipe and the two ends are respectively abutted with the two groups of abutment plates, the side wall of the slurry tank is also fixedly connected with a sizing port, the sizing port is fixedly connected with a sizing hose, and the end of the sizing hose away from the sizing port is connected to a mortar pump equipment;
[0012] A scraping mechanism, which includes a primary scraper, wherein two groups of the primary scrapers are provided and the two groups of primary scrapers are symmetrically arranged on both sides of the slurry box, a primary connecting block is provided between the two groups of the primary scrapers and each group of grouting pipes, and both sides of each group of the primary connecting blocks are respectively fixedly connected to the adjacent grouting pipes and the primary scraper, and secondary scrapers are provided on the outer sides of the two groups of the primary scrapers. The two groups of the secondary scrapers are symmetrically arranged, and multiple groups of secondary connecting blocks are equidistantly arranged between the two groups of the secondary scrapers and the adjacent primary scrapers, and both sides of each group of the secondary connecting blocks are respectively fixedly connected to the adjacent primary scrapers and secondary scrapers, and the primary scrapers and secondary scrapers are arranged parallel to each other with the C-shaped slide rails, and the bottoms of the two groups of the primary scrapers and the two groups of the secondary scrapers are both in contact with the top of the composite plate mold, and the lengths of the primary scrapers and the secondary scrapers are equal and greater than the length of the composite plate mold;
[0013] Among them, the position of the vibrating mechanism does not overlap with the moving trajectory of the push-pull slats. When the connecting block moves to the highest point, the vibrating column abuts against the sliding plate. When it moves to the lowest point, the vibrating column is located below the sliding plate. Each group of the grouting pipes is located directly above the composite plate mold. When the bottom of the first-level scraper and the second-level scraper are in contact with the top of the composite plate mold, the bottom of each group of grouting pipes is located above the composite plate mold.
[0014] As a preferred solution of the grouting device for the prefabricated concrete composite slab of the present invention, three groups of supporting rollers and two groups of horizontal rollers are arranged on both sides of the sliding plate, and the three groups of supporting rollers and the two groups of horizontal rollers are arranged alternately and equidistantly;
[0015] The supporting rolling element comprises a supporting plate and two groups of primary rollers, wherein the supporting plate is fixedly connected to the sliding plate, the two groups of primary rollers are rotatably connected to a side of the supporting plate away from the sliding plate, and the two groups of primary rollers respectively abut against the inner walls of the upper and lower sides of the adjacent C-shaped slide rails;
[0016] The horizontal rolling member includes a U-shaped plate and a secondary roller. The U-shaped plate is fixedly connected to the sliding plate and the opening is arranged with its back to the sliding plate. The secondary roller is horizontally arranged and rotatably connected to the inner side of the U-shaped plate opening. The secondary roller abuts against the inner side wall of the adjacent C-shaped slide rail. The sliding plate is slidably arranged between the two groups of C-shaped slide rails through six groups of supporting rolling members and two groups of horizontal rolling members.
[0017] As a preferred solution of the grouting device of the precast concrete composite slab described in the present invention, the inner sides of the two groups of vertical plates are fixedly connected with bearing seats, the worm is rotatably connected to the two groups of bearing seats, and the worm is rotatably connected between the two groups of vertical plates through the two groups of bearing seats.
[0018] As a preferred solution of the grouting device of the prefabricated concrete composite slab described in the present invention, two groups of rib plates are fixedly connected to the inner sides of the two groups of vertical plates, and the bottom of each group of rib plates is fixedly connected to the mounting plate.
[0019] As a preferred solution of the grouting device of the prefabricated concrete composite plate described in the present invention, wherein: two groups of primary through holes are symmetrically opened on both sides of the sliding plate surface and are matched with bolts and nuts, the composite plate mold is opened with secondary through holes at the positions opposite to the four groups of primary through holes, the four groups of bolts respectively pass through the four groups of primary through holes and then pass through the corresponding secondary through holes, the four groups of nuts are respectively threadedly connected with the four groups of bolts, and the composite plate mold is detachably connected to the top of the sliding plate through the four groups of bolts and nuts.
[0020] As a preferred solution of the grouting device of a prefabricated concrete composite slab described in the present invention, two groups of slide grooves are opened on the inner side of the flange of the slurry inlet pipe, and the positions of the discharge pipe facing the two groups of slide grooves are fixedly connected with slide bars, and the two groups of slide bars are respectively slidably arranged on the inner sides of the two groups of slide grooves, and the slurry inlet pipe is slidably sleeved on the outer side of the discharge pipe through the two groups of slide grooves and the two groups of slide bars.
[0021] As a preferred solution of the grouting device for a prefabricated concrete composite slab described in the present invention, the hydraulic cylinder, slurry tank, discharge pipe and slurry inlet pipe are arranged with their axes overlapping, and the slurry inlet pipe is located at the top center of the slurry box.
[0022] As a preferred solution of the grouting device for the prefabricated concrete composite slab described in the present invention, the bottom of the grout pot is bucket-shaped, and the surface of the grout pot is coated with anti-corrosion paint.
[0023] As a preferred solution of the grouting device of the precast concrete composite slab described in the present invention, the surfaces of the C-shaped slide rail, the support column and the slide plate are all coated with anti-corrosion coatings, and the bottom of the support column is also fixedly connected with an anti-slip pad.
[0024] The present invention further provides a grouting method for a prefabricated concrete composite slab, using the above-mentioned grouting device, which specifically includes the following steps:
[0025] S1, fix the composite board mold on the top of the sliding plate, pump slurry into the slurry tank through the mortar pump equipment, drive the slurry tank downward through the hydraulic cylinder, the slurry tank drives the hydraulic gate valve downward, the hydraulic gate valve drives the discharge pipe downward, under the action of gravity and the elastic force of the tightening spring, the slurry box moves downward synchronously, each group of grouting pipes moves downward synchronously, driving the two groups of first-level scrapers and the two groups of first-level connecting blocks to move downward synchronously, and stop moving when the bottoms of the two groups of first-level scrapers and the two groups of first-level connecting blocks are against the top of the composite board mold;
[0026] S2, open the hydraulic gate valve, and the slurry passes through the hydraulic gate valve, the discharge pipe, the slurry inlet pipe and the slurry box in sequence, and then falls into the composite board mold through each group of grouting pipes;
[0027] S3, start the driving motor, the driving motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the connecting strip to rotate, when the connecting strip rotates, the sliding plate is driven to slide back and forth through the push-pull strip, the sliding plate drives the composite plate mold to reciprocate, during the reciprocating movement of the composite plate mold, the two sets of primary scrapers and the two sets of secondary scrapers scrape the slurry falling into the composite plate mold flat, during the movement of the sliding plate, the rack is driven to move synchronously, the rack drives the driving gear to rotate, the driving gear drives the driving strip to reciprocate up and down through the driving column, the driving strip drives the two sets of sliding cylinders to reciprocate synchronously through the two sets of connecting blocks, the reciprocating movement of the sliding cylinder drives the vibrating column to intermittently hammer the sliding plate, the sliding plate and the composite plate mold vibrate, and the slurry gaps and bubbles in the composite plate mold are eliminated;
[0028] S4, when the composite board mold is filled with slurry, the hydraulic gate valve is closed, and the drive motor continues to run for a period of time and then is turned off. The hydraulic cylinder drives the slurry tank to move upward, so that the two sets of primary scrapers and the two sets of secondary scrapers are away from the composite board mold. After the composite board mold is disassembled, it is transferred to complete the grouting process of the precast concrete composite board.
[0029] Beneficial effects of the present invention:
[0030] 1. By arranging the reciprocating mechanism, the grouting mechanism and the scraping mechanism, the device can perform the smoothing work at the same time during the grouting, and no manual smoothing is required afterwards, which reduces the human resource consumption and improves the production efficiency of the prefabricated concrete composite slab.
[0031] 2. By setting up a vibrating mechanism and using four sets of vibrating columns to vibrate the device when grouting and leveling, the slurry gaps can be eliminated. There is no need for manual gap elimination later, which further reduces human resource consumption. At the same time, vibration can also eliminate bubbles in the slurry to avoid hollowing in the finished composite slabs, thereby ensuring the quality of the finished precast concrete composite slabs. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:
[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of a grouting device for a prefabricated concrete composite slab of the present invention.
[0034] Figure 2The present invention is a schematic diagram of a three-dimensional structure cut below a sliding plate of a grouting device for a prefabricated concrete composite slab.
[0035] Figure 3 For the present invention Figure 2 A magnified view of the structure of area A.
[0036] Figure 4 For the present invention Figure 2 A magnified view of the structure of region B.
[0037] Figure 5 The present invention is a schematic diagram of the three-dimensional structure of the sliding plate part of a grouting device for a prefabricated concrete composite slab.
[0038] Figure 6 The present invention is a vertical cross-sectional structural schematic diagram of the driving slat position of a grouting device for a precast concrete composite slab.
[0039] Figure 7 For the present invention Figure 6 Enlarged view of the structure of the middle C region.
[0040] Figure 8 It is a schematic diagram of the three-dimensional structure of the vibrating mechanism part of the grouting device of the precast concrete composite slab of the present invention.
[0041] Fig. 9 The present invention is a schematic diagram of a partial cross-sectional structure of a vibrating mechanism of a grouting device for a precast concrete composite slab.
[0042] Fig.10 The present invention is a schematic diagram of the three-dimensional structure of a grouting mechanism of a grouting device for a prefabricated concrete composite slab.
[0043] Fig.11 The present invention is a schematic diagram of a partial cross-sectional structure of a grouting mechanism of a grouting device for a precast concrete composite slab.
[0044] Fig.12 The present invention is a schematic diagram of the transverse cross-sectional structure below a grouting pipe of a grouting device for a precast concrete composite slab.
[0045] Fig.13 It is a schematic diagram of the three-dimensional structure of the slurry box part of a grouting device for a prefabricated concrete composite slab of the present invention.
[0046] Fig.14 For the present invention Fig.13 A magnified view of the structure in region D.
[0047] Fig.15 The present invention is a schematic cross-sectional view of the abutment plate position of a grouting mechanism structure of a grouting device for a precast concrete composite slab.
[0048] Fig.16 For the present invention Fig.15 Enlarged view of the structure of region E in the middle.
[0049] Description of the drawings: 100, frame; 101, C-shaped slide rail; 102, support column; 103, sliding plate; 1031, support plate; 1032, primary roller; 1033, U-shaped plate; 1034, secondary roller; 104, composite plate mold; 105, column; 106, mounting beam; 107, mounting plate; 200, reciprocating mechanism; 201, push-pull slats; 202, worm gear; 203, connecting slats; 204, push-pull column; 205, vertical plate; 206, driving motor; 207, worm; 208, bearing seat; 209, rib plate; 300, vibrating mechanism; 301, shell; 301a, movable groove; 302, slide cylinder; 303, vibrating column; 304, stop block ; 305, reset spring; 306, connecting block; 307, driving strip; 308, rack; 309, mounting column; 310, driving gear; 311, driving column; 400, grouting mechanism; 401, fixing plate; 402, hydraulic cylinder; 403, slurry tank; 404, hydraulic gate valve; 405, discharge pipe; 4051, slide bar; 406, slurry box; 407, slurry inlet pipe; 407a, slide; 408, limit ring; 409, grouting pipe; 410, back plate; 411, tightening spring; 412, slurry port; 413, slurry hose; 500, scraping mechanism; 501, primary scraper; 502, primary connecting block; 503, secondary scraper; 504, secondary connecting block. DETAILED DESCRIPTION
[0050] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0052] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.
[0053] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1
[0054] A grouting device for a prefabricated concrete composite slab, comprising:
[0055] The frame 100 includes a C-shaped slide rail 101. Two groups of C-shaped slide rails 101 are provided. The two groups of C-shaped slide rails 101 are located opposite to each other. Support columns 102 are fixedly connected to both sides of the bottom of the two groups of C-shaped slide rails 101. A sliding plate 103 is slidably provided between the two groups of C-shaped slide rails 101. A composite plate mold 104 is detachably connected to the top of the sliding plate 103. Two groups of columns 105 are fixedly connected to the outer sides of the two groups of C-shaped slide rails 101. The four groups of columns 105 are distributed in a rectangular shape. A mounting beam 106 is fixedly connected between the two groups of columns 105 on the opposite sides and located opposite to each other. The two groups of mounting beams 106 are located above the composite plate mold 104. A mounting plate 107 is also fixedly connected between the four groups of columns 105. The mounting plate 107 is located below the sliding plate 103.
[0056] The reciprocating mechanism 200 includes a push-pull slat 201, which is fixedly connected to the bottom center of the sliding plate 103 and is vertically arranged with the C-shaped slide rail 101. The top of the mounting plate 107 is rotatably connected to a worm gear 202, and the top of the worm gear 202 is fixedly connected to a connecting slat 203. The top of the connecting slat 203 is fixedly connected to a push-pull column 204 on the side away from the worm gear 202. The push-pull slat 201 has a first-level push-pull groove along the length direction. The push-pull column 204 slides Arranged inside the first-level push-pull groove, the top of the mounting plate 107 is also fixedly connected with two groups of vertical plates 205 arranged opposite to each other, one group of vertical plates 205 is fixedly connected to the outside of a driving motor 206, and a through hole is opened at the position of the vertical plate 205 facing the rotating shaft of the driving motor 206, and the rotating shaft of the driving motor 206 passes through the through hole, and a worm 207 is rotatably connected between the two groups of vertical plates 205, the worm 207 is fixedly connected to the rotating shaft of the driving motor 206, and the worm 207 and the worm wheel 202 are meshed with each other;
[0057] The vibrating mechanism 300 is symmetrically arranged with two groups of vibrating mechanisms 300 below the sliding plate 103, and the two groups of vibrating mechanisms 300 are respectively located close to the two groups of C-shaped slide rails 101. The vibrating mechanism 300 includes a shell 301, which is fixedly connected to the top of the mounting plate 107. The top of the shell 301 is provided with two groups of movable cavities in the vertical direction. The inner sides of the two groups of movable cavities are slidably connected with slide cylinders 302. The inner sides of the two groups of slide cylinders 302 are slidably provided with vibrating columns 303. The vibrating columns 303 all extend out of the corresponding slide cylinder 302, and the bottom of the vibrating columns 303 is fixedly connected with a stop block 304, which is slidably connected in the slide cylinder 302. The top of the slide cylinder 302 has a flange extending inward, and the top of the stop block 304 abuts against the flange. A return spring 305 is also provided in the slide cylinder 302, and the two ends of the return spring 305 abut against the bottom of the stop block 304 and the inner wall of the bottom of the slide cylinder 302 respectively. The housing 301 is close to the adjacent C-shaped slide rail 101 and faces the two sets of slides. The positions of the cylinders 302 are all provided with movable grooves 301a in the vertical direction. The side walls of the two sets of slide cylinders 302 are fixedly connected with connecting blocks 306. The two sets of connecting blocks 306 pass through the two sets of movable grooves 301a respectively. The two sets of connecting blocks 306 are fixedly connected with driving strips 307 on the side away from the slide cylinder 302. The driving strips 307 are arranged parallel to the C-shaped slide rail 101. The bottom of the sliding plate 103 is fixedly connected with a rack 308. The rack 308 is arranged parallel to the C-shaped slide rail 101. The bottom of the C-shaped slide rail 101 adjacent to the housing 301 is fixedly connected with a mounting column 309, the bottom of the mounting column 309 is fixedly connected with the mounting plate 107, the side of the mounting column 309 close to the driving slat 307 is rotatably connected with a driving gear 310, the side of the driving gear 310 close to the driving slat 307 is fixedly connected with a driving column 311, the driving slat 307 board surface is provided with a secondary push-pull groove along the length direction, and the driving column 311 is slidably arranged inside the secondary push-pull groove;
[0058] The grouting mechanism 400 includes a fixed plate 401, which is fixedly connected to the top of the two groups of mounting beams 106, a hydraulic cylinder 402 is fixedly connected to the top of the fixed plate 401, an opening is provided on the fixed plate 401 directly opposite to the position of the piston rod of the hydraulic cylinder 402, the piston rod of the hydraulic cylinder 402 passes through the opening, a slurry pot 403 is fixedly connected to the bottom of the piston rod of the hydraulic cylinder 402, a hydraulic gate valve 404 is fixedly connected to the bottom of the slurry pot 403, a discharge pipe 405 is fixedly connected to the bottom of the hydraulic gate valve 404, a slurry box 406 is arranged directly below the discharge pipe 405, the slurry box 406 is strip-shaped and is arranged perpendicular to the C-shaped slide rail 101, a slurry inlet pipe 407 is fixedly connected to the top of the slurry box 406, and the slurry inlet pipe 407 is slidably sleeved on the discharge pipe 4 05 outside, the inner side of the top of the slurry inlet pipe 407 has an inwardly extending flange, the bottom of the discharge pipe 405 is fixedly sleeved with a limit ring 408, the limit ring 408 is slidably connected to the inner side of the slurry inlet pipe 407, the bottom of the slurry box 406 is equidistantly fixedly connected with multiple groups of grouting pipes 409 along its length direction, the discharge pipe 405 and the outside of the slurry inlet pipe 407 are both fixedly sleeved with a butt plate 410, a tightening spring 411 is arranged between the two groups of butt plates 410, the tightening spring 411 is sleeved on the outside of the slurry inlet pipe 407 and the two ends are respectively abutted against the two groups of butt plates 410, the side wall of the slurry tank 403 is also fixedly connected with a slurry port 412, the slurry port 412 is fixedly connected with a slurry hose 413, and the end of the slurry hose 413 away from the slurry port 412 is connected to a mortar pump equipment;
[0059] The scraping mechanism 500 includes a primary scraper 501, wherein the primary scraper 501 is provided with two groups and the two groups of primary scrapers 501 are symmetrically arranged on both sides of the slurry box 406, and a primary connecting block 502 is provided between the two groups of primary scrapers 501 and each group of grouting pipes 409, and the two sides of each group of primary connecting blocks 502 are respectively fixedly connected to the adjacent grouting pipes 409 and the primary scraper 501, and the outer sides of the two groups of primary scrapers 501 are provided with secondary scrapers 503, and the two groups of secondary scrapers 503 are symmetrically arranged. 03 and the adjacent primary scraper 501 are equidistantly provided with multiple groups of secondary connection blocks 504, and the two sides of each group of secondary connection blocks 504 are respectively fixedly connected with the adjacent primary scraper 501 and the secondary scraper 503, and the primary scraper 501 and the secondary scraper 503 are arranged parallel to each other with the C-shaped slide rail 101, and the bottoms of the two groups of primary scrapers 501 and the two groups of secondary scrapers 503 are both in contact with the top of the composite plate mold 104, and the lengths of the primary scraper 501 and the secondary scraper 503 are equal and greater than the length of the composite plate mold 104;
[0060] Among them, the position of the vibration mechanism 300 does not overlap with the moving trajectory of the push-pull slats 201. When the connecting block 306 moves to the highest point, the vibration column 303 abuts against the sliding plate 103. When it moves to the lowest point, the vibration column 303 is located below the sliding plate 103. Each group of grouting pipes 409 is located directly above the composite plate mold 104. When the bottom of the first-level scraper 501 and the second-level scraper 503 are attached to the top of the composite plate mold 104, the bottom of each group of grouting pipes 409 is located above the composite plate mold 104.
[0061] In addition, three groups of supporting rollers and two groups of horizontal rollers are arranged on both sides of the sliding plate 103. The three groups of supporting rollers and the two groups of horizontal rollers are arranged alternately and equidistantly. The supporting rollers include a supporting plate 1031 and two groups of primary rollers 1032. The supporting plate 1031 is fixedly connected to the sliding plate 103. The two groups of primary rollers 1032 are rotatably connected to the side of the supporting plate 1031 away from the sliding plate 103. The two groups of primary rollers 1032 are respectively pressed against the adjacent C-shaped slide rails 101. On the inner walls on both sides of the lower part, the horizontal rolling elements include a U-shaped plate 1033 and a secondary roller 1034. The U-shaped plate 1033 is fixedly connected to the sliding plate 103 and the opening is arranged with its back to the sliding plate 103. The secondary roller 1034 is horizontally arranged and rotatably connected to the inner side of the opening of the U-shaped plate 1033. The secondary roller 1034 abuts against the inner wall of the adjacent C-shaped slide rail 101. The sliding plate 103 is slidably arranged between the two groups of C-shaped slide rails 101 through six groups of supporting rolling elements and two groups of horizontal rolling elements.
[0062] In addition, the inner sides of the two sets of vertical plates 205 are fixedly connected with bearing seats 208, the worm 207 is rotatably connected with the two sets of bearing seats 208, and the worm 207 is rotatably connected between the two sets of vertical plates 205 through the two sets of bearing seats 208. The sliding plate 103 has two sets of primary through holes symmetrically opened on both sides of the plate surface and matched with bolts and nuts. The composite plate mold 104 has secondary through holes at the positions facing the four sets of primary through holes. The four sets of bolts pass through the four sets of primary through holes and then pass through the corresponding secondary through holes. The four sets of nuts They are respectively threadedly connected with four groups of bolts, and the composite plate mold 104 is detachably connected to the top of the sliding plate 103 by four groups of bolts and nuts. Two groups of slide grooves 407a are opened on the inner side of the flange of the slurry inlet pipe 407, and the positions of the discharge pipe 405 facing the two groups of slide grooves 407a are fixedly connected with slide bars 4051. The two groups of slide bars 4051 are respectively slidably set on the inner sides of the two groups of slide grooves 407a, and the slurry inlet pipe 407 is slidably sleeved on the outer side of the discharge pipe 405 through the two groups of slide grooves 407a and the two groups of slide bars 4051.
[0063] It should be noted that the hydraulic cylinder 402, the slurry pot 403, the discharge pipe 405 and the slurry inlet pipe 407 are arranged with overlapping axes. The slurry inlet pipe 407 is located at the top center of the slurry box 406, which is conducive to ensuring the structural stability of the device. The bottom of the slurry pot 403 is bucket-shaped, and the bucket shape can ensure that the slurry can flow out completely. The surface of the slurry pot 403 is coated with anti-corrosion paint, and the surfaces of the C-shaped slide rail 101, the support column 102 and the sliding plate 103 are all coated with anti-corrosion paint. The anti-corrosion paint is used to improve the anti-corrosion performance of the device and increase the service life of the device. The bottom of the support column 102 is also fixedly connected with an anti-slip pad, which can improve the stability of the device. Example
[0064] A grouting method for a prefabricated concrete composite slab, based on Example 1, comprises the following steps:
[0065] S1, fix the composite board mold 104 on the top of the sliding plate 103, pump slurry into the slurry tank 403 through the mortar pump equipment, drive the slurry tank 403 to move downward through the hydraulic cylinder 402, the slurry tank 403 drives the hydraulic gate valve 404 to move downward, the hydraulic gate valve 404 drives the discharge pipe 405 to move downward, under the action of gravity and the elastic force of the tightening spring 411, the slurry box 406 moves downward synchronously, and each group of grouting pipes 409 moves downward synchronously, driving the two groups of primary scrapers 501 and the two groups of primary connecting blocks 502 to move downward synchronously, and stop moving when the bottoms of the two groups of primary scrapers 501 and the two groups of primary connecting blocks 502 are against the top of the composite board mold 104;
[0066] S2, open the hydraulic gate valve 404, the slurry passes through the hydraulic gate valve 404, the discharge pipe 405, the slurry inlet pipe 407 and the slurry box 406 in sequence, and then falls into the laminated plate mold 104 through each group of grouting pipes 409;
[0067] S3, start the driving motor 206, the driving motor 206 drives the worm 207 to rotate, the worm 207 drives the worm wheel 202 to rotate, the worm wheel 202 drives the connecting strip 203 to rotate, when the connecting strip 203 rotates, the sliding plate 103 is driven to slide back and forth through the push-pull strip 201, the sliding plate 103 drives the composite plate mold 104 to move back and forth, during the reciprocating movement of the composite plate mold 104, the two sets of primary scrapers 501 and the two sets of secondary scrapers 503 scrape the slurry falling into the composite plate mold 104 flat, During the movement of the sliding plate 103, the rack 308 is driven to move synchronously, the rack 308 drives the driving gear 310 to rotate, the driving gear 310 drives the driving strip 307 to move up and down reciprocatingly through the driving column 311, the driving strip 307 drives the two groups of slide cylinders 302 to move synchronously reciprocatingly through the two groups of connecting blocks 306, the reciprocating movement of the slide cylinder 302 drives the vibrating column 303 to intermittently hammer the sliding plate 103, the sliding plate 103 and the composite plate mold 104 vibrate, and the slurry gaps and bubbles in the composite plate mold 104 are eliminated;
[0068] S4, when the composite board mold 104 is filled with slurry, the hydraulic gate valve 404 is closed, and the drive motor 206 continues to run for a period of time and then is turned off. The hydraulic cylinder 402 drives the slurry pot 403 to move upward, so that the two groups of primary scrapers 501 and the two groups of secondary scrapers 503 are away from the composite board mold 104. The composite board mold 104 is disassembled and transferred to complete a grouting process of a prefabricated concrete composite board.
[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A grouting device for a prefabricated concrete composite slab, characterized in that: include: The frame (100) comprises a C-shaped slide rail (101), wherein two groups of the C-shaped slide rail (101) are arranged, and the two groups of the C-shaped slide rail (101) are located opposite to each other, and both sides of the bottom of the two groups of the C-shaped slide rail (101) are fixedly connected to support columns (102), and a sliding plate (103) is slidably arranged between the two groups of the C-shaped slide rail (101), and the top of the sliding plate (103) is detachably connected to a composite plate mold (104), and the two groups of the C-shaped slide rails (101) are fixedly connected to each other. Two groups of columns (105) are fixedly connected to the outside of the rail (101), and the four groups of columns (105) are distributed in a rectangular shape. A mounting beam (106) is fixedly connected between the two groups of columns (105) on opposite sides and in opposite positions, and the two groups of mounting beams (106) are both located above the composite plate mold (104). A mounting plate (107) is also fixedly connected between the four groups of columns (105), and the mounting plate (107) is located below the sliding plate (103); The reciprocating mechanism (200) comprises a push-pull slat (201), wherein the push-pull slat (201) is fixedly connected to the bottom center of the sliding plate (103) and is arranged vertically with the C-shaped slide rail (101); the top of the mounting plate (107) is rotatably connected to a worm gear (202); the top of the rotating shaft of the worm gear (202) is fixedly connected to a connecting slat (203); the top of the connecting slat (203) is fixedly connected to a push-pull column (204) on a side away from the worm gear (202); the push-pull slat (201) is provided with a primary push-pull groove along the length direction; the push-pull column (204) slides Arranged on the inner side of the primary push-pull groove, the top of the mounting plate (107) is also fixedly connected to two groups of vertical plates (205) arranged opposite to each other, one group of the vertical plates (205) is fixedly connected to the outer side of a driving motor (206), a through hole is opened at a position of the vertical plate (205) opposite to the rotating shaft of the driving motor (206), the rotating shaft of the driving motor (206) passes through the through hole, a worm (207) is rotatably connected between the two groups of the vertical plates (205), the worm (207) is fixedly connected to the rotating shaft of the driving motor (206), and the worm (207) and the worm wheel (202) are meshed with each other; A vibrating mechanism (300), wherein two groups of the vibrating mechanisms (300) are symmetrically arranged below the sliding plate (103), and the two groups of the vibrating mechanisms (300) are respectively located close to two groups of C-shaped slide rails (101), and the vibrating mechanism (300) comprises a shell (301), wherein the shell (301) is fixedly connected to the top of the mounting plate (107), and two groups of movable cavities are opened in the top of the shell (301) along the vertical direction, and the inner sides of the two groups of movable cavities are slidably connected to slide cylinders (302), and the inner sides of the two groups of slide cylinders (302) are slidably arranged with vibrating columns (303), and the two groups of vibrating cavities are connected to the inner sides of the two groups of slide cylinders (302). The tamping columns (303) all extend out of the corresponding slide cylinder (302), the bottom of the tamping column (303) is fixedly connected with a stop block (304), the stop block (304) is slidably connected in the slide cylinder (302), the top of the slide cylinder (302) has a flange extending inward, the top of the stop block (304) abuts against the flange, and a return spring (305) is also arranged in the slide cylinder (302), the two ends of the return spring (305) are respectively abutted against the bottom of the stop block (304) and the inner wall of the bottom of the slide cylinder (302), and the shell (301) is close to the adjacent C-shaped slide rail (101) and faces the two The positions of the two groups of slide cylinders (302) are all provided with movable grooves (301a) in the vertical direction, the side walls of the two groups of slide cylinders (302) are fixedly connected with connecting blocks (306), the two groups of connecting blocks (306) respectively pass through the two groups of movable grooves (301a), the two groups of connecting blocks (306) are fixedly connected with driving strips (307) on the side away from the slide cylinders (302), the driving strips (307) and the C-shaped slide rail (101) are arranged parallel to each other, the bottom of the sliding plate (103) is fixedly connected with a rack (308), the rack (308) and the C-shaped slide rail (101) are mutually parallel. The C-shaped slide rail (101) is arranged in parallel and is fixedly connected to a mounting column (309) at the bottom thereof adjacent to the housing (301). The bottom of the mounting column (309) is fixedly connected to the mounting plate (107). The side of the mounting column (309) close to the driving slat (307) is rotatably connected to a driving gear (310). The side of the driving gear (310) close to the driving slat (307) is fixedly connected to a driving column (311). The driving slat (307) has a secondary push-pull groove formed on its surface along its length, and the driving column (311) is slidably arranged inside the secondary push-pull groove. The grouting mechanism (400) comprises a fixed plate (401), wherein the fixed plate (401) is fixedly connected to the top of two groups of mounting beams (106), a hydraulic cylinder (402) is fixedly connected to the top of the fixed plate (401), an opening is provided at a position of the fixed plate (401) directly opposite to the piston rod of the hydraulic cylinder (402), the piston rod of the hydraulic cylinder (402) passes through the opening, a slurry pot (403) is fixedly connected to the bottom of the piston rod of the hydraulic cylinder (402), a hydraulic gate valve (404) is fixedly connected to the bottom of the slurry pot (403), a discharge pipe (405) is fixedly connected to the bottom of the hydraulic gate valve (404), a slurry box (406) is arranged directly below the discharge pipe (405), the slurry box (406) is strip-shaped and is arranged perpendicular to the C-shaped slide rail (101), a slurry inlet pipe (407) is fixedly connected to the top of the slurry box (406), and the slurry inlet pipe (407) is slidably sleeved on the discharge pipe. The outer side of the slurry inlet pipe (407) is provided with a flange extending inwardly on the inner side of the top, the bottom of the discharge pipe (405) is fixedly sleeved with a limit ring (408), and the limit ring (408) is slidably connected to the inner side of the slurry inlet pipe (407). The bottom of the slurry box (406) is fixedly connected with multiple groups of grouting pipes (409) at equal intervals along its length direction, and the outer sides of the discharge pipe (405) and the slurry inlet pipe (407) are both fixedly sleeved with a stop plate (410). A tightening spring (411) is provided between the two groups of the abutment plates (410), the tightening spring (411) is sleeved on the outside of the slurry inlet pipe (407) and the two ends thereof are respectively in contact with the two groups of the abutment plates (410), the side wall of the slurry tank (403) is also fixedly connected with a slurry port (412), the slurry port (412) is fixedly connected with a slurry hose (413), and the end of the slurry hose (413) away from the slurry port (412) is connected with a mortar pump device; The scraping mechanism (500) comprises a primary scraper (501), wherein two groups of the primary scraper (501) are provided and the two groups of primary scrapers (501) are symmetrically arranged on both sides of the slurry box (406), a primary connecting block (502) is provided between the two groups of the primary scraper (501) and each group of grouting pipes (409), and the two sides of each group of the primary connecting block (502) are respectively fixedly connected to the adjacent grouting pipe (409) and the primary scraper (501), and a secondary scraper (503) is provided on the outer side of the two groups of the primary scraper (501), and the two groups of the secondary scraper (503) are symmetrically arranged. A plurality of groups of secondary connection blocks (504) are equidistantly arranged between the first-level scraper (503) and the adjacent first-level scraper (501), and the two sides of each group of the secondary connection blocks (504) are respectively fixedly connected to the adjacent first-level scraper (501) and the secondary scraper (503), and the first-level scraper (501) and the secondary scraper (503) are arranged parallel to each other with the C-shaped slide rail (101), and the bottoms of the two groups of the first-level scraper (501) and the two groups of the secondary scraper (503) are both in contact with the top of the composite plate mold (104), and the lengths of the first-level scraper (501) and the secondary scraper (503) are equal and greater than the length of the composite plate mold (104); The position of the vibrating mechanism (300) does not coincide with the moving trajectory of the push-pull slats (201); when the connecting block (306) moves to the highest point, the vibrating column (303) abuts against the sliding plate (103); when it moves to the lowest point, the vibrating column (303) is located below the sliding plate (103); each group of the grouting pipes (409) is located directly above the composite plate mold (104); and when the bottoms of the primary scraper (501) and the secondary scraper (503) are in contact with the top of the composite plate mold (104), the bottoms of each group of the grouting pipes (409) are located above the composite plate mold (104).
2. The grouting device for a prefabricated concrete composite slab according to claim 1, characterized in that: Three groups of supporting rolling elements and two groups of horizontal rolling elements are arranged on both sides of the sliding plate (103), and the three groups of supporting rolling elements and the two groups of horizontal rolling elements are arranged alternately and equidistantly; The supporting rolling element comprises a supporting plate (1031) and two groups of primary rollers (1032); the supporting plate (1031) is fixedly connected to the sliding plate (103); the two groups of primary rollers (1032) are rotatably connected to a side of the supporting plate (1031) away from the sliding plate (103); the two groups of primary rollers (1032) respectively abut against the upper and lower inner walls of adjacent C-shaped slide rails (101); The horizontal rolling element comprises a U-shaped plate (1033) and a secondary roller (1034); the U-shaped plate (1033) is fixedly connected to the sliding plate (103) and the opening is arranged with the back facing the sliding plate (103); the secondary roller (1034) is arranged horizontally and rotatably connected to the inner side of the opening of the U-shaped plate (1033); the secondary roller (1034) abuts against the inner side wall of the adjacent C-shaped slide rail (101); the sliding plate (103) is slidably arranged between the two groups of C-shaped slide rails (101) by cooperating with the two groups of horizontal rolling elements through six groups of supporting rolling elements.
3. The grouting device for a prefabricated concrete composite slab according to claim 1, characterized in that: The inner sides of the two groups of vertical plates (205) are fixedly connected with bearing seats (208), the worm (207) is rotatably connected to the two groups of bearing seats (208), and the worm (207) is rotatably connected between the two groups of vertical plates (205) through the two groups of bearing seats (208).
4. The grouting device for a prefabricated concrete composite slab according to claim 1, characterized in that: Two groups of rib plates (209) are fixedly connected to the inner sides of the two groups of vertical plates (205), and the bottom of each group of rib plates (209) is fixedly connected to the mounting plate (107).
5. The grouting device for a prefabricated concrete composite slab according to claim 1, characterized in that: The sliding plate (103) has two groups of primary through holes symmetrically formed on both sides of the plate surface and is equipped with bolts and nuts. The composite plate mold (104) has secondary through holes formed at positions opposite to the four groups of primary through holes. The four groups of bolts respectively pass through the four groups of primary through holes and then pass through the corresponding secondary through holes. The four groups of nuts are respectively threadedly connected to the four groups of bolts. The composite plate mold (104) is detachably connected to the top of the sliding plate (103) through the four groups of bolts and nuts.
6. The grouting device for a prefabricated concrete composite slab according to claim 1, characterized in that: Two groups of slide grooves (407a) are provided on the inner side of the flange of the slurry inlet pipe (407), and the positions of the discharge pipe (405) facing the two groups of slide grooves (407a) are fixedly connected with slide bars (4051), and the two groups of slide bars (4051) are respectively slidably arranged on the inner sides of the two groups of slide grooves (407a), and the slurry inlet pipe (407) is slidably sleeved on the outer side of the discharge pipe (405) through the two groups of slide grooves (407a) and the two groups of slide bars (4051).
7. The grouting device for a prefabricated concrete composite slab according to claim 1, characterized in that: The hydraulic cylinder (402), the pulp tank (403), the discharge pipe (405) and the pulp inlet pipe (407) are arranged with their axes overlapping, and the pulp inlet pipe (407) is located at the top center of the pulp box (406).
8. The grouting device for a prefabricated concrete composite slab according to claim 7, characterized in that: The bottom of the slurry pot (403) is in a bucket shape, and the surface of the slurry pot (403) is coated with anti-corrosion paint.
9. The grouting device for a prefabricated concrete composite slab according to claim 1, characterized in that: The surfaces of the C-shaped slide rail (101), the support column (102) and the sliding plate (103) are all coated with anti-corrosion paint, and an anti-slip pad is fixedly connected to the bottom of the support column (102).
10. A grouting method for a prefabricated concrete composite slab, using the grouting device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, fix the composite plate mold (104) on the top of the sliding plate (103), pump slurry into the slurry tank (403) through the mortar pump equipment, drive the slurry tank (403) to move downward through the hydraulic cylinder (402), the slurry tank (403) drives the hydraulic gate valve (404) to move downward, the hydraulic gate valve (404) drives the discharge pipe (405) to move downward, under the action of gravity and the elastic force of the clamping spring (411), the slurry box (406) moves downward synchronously, each group of grouting pipes (409) moves downward synchronously, and drives the two groups of primary scrapers (501) and the two groups of primary connecting blocks (502) to move downward synchronously, and stop moving when the bottoms of the two groups of primary scrapers (501) and the two groups of primary connecting blocks (502) abut against the top of the composite plate mold (104); S2, opening the hydraulic gate valve (404), the slurry passes through the hydraulic gate valve (404), the discharge pipe (405), the slurry inlet pipe (407) and the slurry box (406) in sequence, and then falls into the laminated plate mold (104) through each group of grouting pipes (409); S3, starting the driving motor (206), the driving motor (206) drives the worm (207) to rotate, the worm (207) drives the worm wheel (202) to rotate, the worm wheel (202) drives the connecting strip (203) to rotate, when the connecting strip (203) rotates, the sliding plate (103) is driven to slide back and forth through the push-pull strip (201), the sliding plate (103) drives the composite plate mold (104) to move back and forth, during the reciprocating movement of the composite plate mold (104), the two sets of primary scrapers (501) and the two sets of secondary scrapers (503) scrape the slurry falling into the composite plate mold (104) to level it, During the movement of the sliding plate (103), the rack (308) is driven to move synchronously, the rack (308) drives the driving gear (310) to rotate, the driving gear (310) drives the driving strip (307) to move up and down reciprocatingly through the driving column (311), the driving strip (307) drives the two groups of slide cylinders (302) to move synchronously reciprocatingly through the two groups of connecting blocks (306), the reciprocating movement of the slide cylinder (302) drives the vibrating column (303) to intermittently hammer the sliding plate (103), the sliding plate (103) and the composite plate mold (104) vibrate, and the slurry gaps and bubbles in the composite plate mold (104) are eliminated; S4, when the composite plate mold (104) is filled with slurry, the hydraulic gate valve (404) is closed, the drive motor (206) continues to run for a period of time and then is closed, the hydraulic cylinder (402) drives the slurry tank (403) to move upward, so that the two sets of primary scrapers (501) and the two sets of secondary scrapers (503) are away from the composite plate mold (104), and the composite plate mold (104) is disassembled and transferred, thereby completing a grouting process of a concrete prefabricated composite plate.
Citation Information
Patent Citations
Casting molding equipment with automatic leveling structure for building construction and method thereof
CN113927699A
Machining device for concrete prefabricated laminated slab
CN212826111U
Cited By
Grouting device and grouting method for polyurethane concrete prefabricated laminated slab
CN120038824A
Grouting device and grouting method for a polyurethane concrete precast composite slab
CN120038824B