Floor concrete paving device for building construction

Abstract

A floor concrete paving device for building construction comprises a top plate, parallel side plates on the two sides, an inclined material guiding inclined plate and a vertical fixing plate, the bottom faces of the plates are coplanar, the interior of the plates is divided into a discharging area and a rolling area, the material guiding inclined plate and the fixing plate form an inverted trapezoidal material guiding space, the top plate is provided with a communicating feeding groove, and a pressing roller is arranged in the rolling area. And the bottoms of the rollers are in contact with the ground. When the pressing roller cleaning device is used, the cleaning scraping plate can be conveniently and regularly replaced, the time for cleaning concrete attached to the surface of the pressing roller is shortened, the time for replacing the cleaning scraping plate is shortened, and the efficiency for cleaning the surface of the pressing roller is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a floor concrete spreading device for building construction. Background Technique

[0002] The paver is one of the most common devices in the field of construction machinery, mainly used to complete the spreading and pre-compaction of various mixtures. During road construction, the paver is used to evenly press the laid concrete. In the prior art, a floor concrete spreading device for building construction with a publication number of CN218436502U is disclosed. By setting a convenient filling mechanism, although the time for manual leveling of the sunken ground is reduced, the time for adjusting the filling position is reduced, and the efficiency of filling the sunken ground is improved. However, its cleaning scraper is in hard contact with the pressing roller. After long-term use, due to the wear of the cleaning scraper, there is a gap between its contact with the pressing roller, resulting in poor cleaning effect. Secondly, the cleaning scraper is installed and disassembled by fixing bolts, and the installation and disassembly are relatively cumbersome, reducing the installation and disassembly efficiency of the cleaning scraper and making it inconvenient to replace the cleaning scraper. Content of the Utility Model

[0003] The utility model provides a floor concrete spreading device for building construction, which reduces the time for cleaning the concrete attached to the surface of the pressing roller and reduces the time for replacing the cleaning scraper.

[0004] To achieve the above object, the utility model provides a floor concrete spreading device for building construction, which includes a horizontally arranged top plate. On both sides of the top plate, there are installed side plates that are parallel to each other and vertically arranged. Below the top plate and between the two side plates, there are arranged an inclined material guiding inclined plate and a vertically arranged fixing plate. Both the material guiding inclined plate and the fixing plate are perpendicular to the side plates. The bottom surfaces of the two side plates, the material guiding inclined plate, and the fixing plate are all in the same plane. The fixing plate divides the space below the top plate and between the two side plates into a blanking area and a rolling area. The material guiding inclined plate is located in the blanking area, and the material guiding inclined plate and the fixing plate are arranged opposite to each other. The opposite surfaces of the material guiding inclined plate and the fixing plate enclose a material guiding space in the shape of an inverted trapezoid with a large top inlet and a small bottom outlet. An inlet groove communicating with the top opening of the material guiding space is opened on the top plate. In the rolling area and between the two side plates, there is installed a pressing roller. The roller shaft of the pressing roller is perpendicular to the side plates. The bottom of the pressing roller extends out of the rolling area and contacts the ground. A scraping mechanism is installed on the pressing roller. The scraping mechanism includes a threaded rotating rod, a moving strip plate, a spring column, a mounting plate, and a cleaning scraping plate. On the bottom surface of the top plate and above the pressing roller, there is opened a second moving groove. The second moving groove is arranged parallel to the side plates. The threaded rotating rod is rotationally assembled in the second moving groove. One end of the threaded rotating rod extends out of the top plate to form an adjusting end. A handle for conveniently rotating the threaded rotating rod is installed on the adjusting end of the threaded rotating rod. The top end of the moving strip plate is slidably installed in the second moving groove, and the top end of the moving strip plate is threadedly connected to the threaded rotating rod. The bottom end of the moving strip plate is connected to the mounting plate through a spring column. The mounting plate is arranged at a position close to the middle of the pressing roller and is parallel to the roller shaft of the pressing roller. Both ends of the mounting plate on the side away from the spring column are connected to the cleaning scraping plate through a clamping mechanism. The cleaning scraping plate is arranged parallel to the mounting plate. The length of the cleaning scraping plate matches the axial length of the pressing roller. In the working state, by rotating the threaded rotating rod, the scraping end of the cleaning scraping plate contacts the outer surface of the pressing roller, and the spring column controls the pre-tightening force between the cleaning scraping plate and the outer surface of the pressing roller.

[0005] The cam is provided with a plurality of movable parts, and the movable part is provided with a plurality of movable parts, and the movable part is provided with a plurality of movable parts. When in the installed state, the clamping end of the shift block is installed in the movable groove, the fixed plug rod is inserted in the fixed socket, and the fixed plug rod is prevented from being separated from the fixed socket under the action of the spring; when disassembling, the clamping end of the shift block is moved in the movable groove by pushing the shifting end of the shift block to compress the spring, so that the fixed plug rod is separated from the fixed socket, thereby realizing the separation of the cleaning scraper and the mounting plate.

[0006] In this embodiment, a docking block is fixed on the middle of the side away from the spring column on the mounting plate, and a docking groove matching the docking block is opened on the middle of the side of the cleaning scraper close to the mounting plate. When the docking block and the docking groove are matched for easy installation, the mounting groove on the mounting plate corresponds to the moving groove on the cleaning scraper, thereby facilitating the installation of the subsequent clamping mechanism and improving the efficiency of installation.

[0007] In this embodiment, the feed trough is arranged between the two side plates and is perpendicular to the side plates. The material guide inclined plate is arranged directly below the feed trough. A first linear drive mechanism is provided on the top plate near the feed trough. A material box for storing concrete is installed on the movable end of the first linear drive mechanism. The first linear drive mechanism drives the material box to move in a direction parallel to the feed trough. The outlet of the discharge pipe of the material box is connected to the feed trough, and a valve is installed on the discharge pipe.

[0008] In this embodiment, the first linear drive mechanism includes a first moving groove arranged in parallel with the feed groove, a reciprocating screw is rotatably installed in the first moving groove, the reciprocating screw is driven to rotate by a driving motor, a moving block is slidably installed in the first moving groove, the moving block is threadedly connected to the reciprocating screw, and the material box is installed on the moving block. Specifically: when in use, by starting the driving motor, the driving motor drives the reciprocating screw to rotate, the reciprocating screw drives the moving block to move left and right along the first moving groove, and then drives the material box to move left and right, so that the discharge pipe is directly above the depression on the ground, and then the valve is rotated to open, so that the concrete inside the material box flows along the discharge pipe to the surface of the guide inclined plate.

[0009] In this embodiment, the top of the material guiding inclined plate is fixed on the top plate through a fixing plate, and a supporting plate arranged parallel to the top plate is fixed at the bottom of the material guiding inclined plate. The supporting plate is arranged between the bottoms of the two side plates. In the initial state, the device is supported on the ground by the supporting plate and the pressing rollers. In the working state, the device is supported on the ground by the pressing rollers to achieve rolling.

[0010] In this embodiment, a pushing device is further installed on one side of the material guiding inclined plate facing the blanking area. The pushing device includes an electric push rod and a pushing scraper. The length of the pushing scraper matches the width of the material guiding inclined plate. The scraping side of the pushing scraper is always in contact with the material guiding inclined plate. The pushing scraper is driven by the electric push rod to move along the material guiding inclined plate from the inlet to the outlet of the material guiding space. In the initial state, the pushing scraper is close to the top of the material guiding inclined plate and far away from the projection of the feeding trough on the material guiding inclined plate.

[0011] In this embodiment, the middle of the back of the pushing scraper is connected to the telescopic end of the electric push rod. The fixed end of the electric push rod is fixed at the top of the material guiding inclined plate. The two sides of the pushing scraper are symmetrically installed with telescopic rods centered on the electric push rod. The fixed ends of the telescopic rods are also fixed at the top of the material guiding inclined plate. The telescopic rods are parallel to the electric push rod. When in use, after the material falls from the feeding trough onto the material guiding inclined plate, the pushing scraper is driven to move downward along the material guiding inclined plate by the telescopic movement of the electric push rod, so as to push the material out from the outlet of the material guiding space. By controlling the moving speed of the pushing scraper, the discharging speed of the concrete on the surface of the material guiding inclined plate can be controlled, so that the concrete can fall evenly to the sunken part of the ground to level the ground, reducing the time for manual leveling of the sunken part of the ground and reducing the time for adjusting the filling position, thus improving the efficiency of filling the sunken position of the ground.

[0012] With the above structure, the device has the following advantages:

[0013] 1. A scraping mechanism is also installed on the pressing roller of the device. The scraping mechanism does not always contact the pressing roller, but the cleaning scraper can be controlled to contact or not contact the pressing roller at any time by using the threaded rotating rod, so that the cleaning scraper does not contact the pressing roller for a long time. At the same time, through the arranged spring columns, the rebounding force of the spring columns is used as the pre-tightening force, so that the cleaning scraper is in close contact with the surface of the pressing roller, improving the scraping effect.

[0014] 2. The cleaning scraper of the device is connected to the mounting plate through a clamping mechanism, which facilitates the disassembly of the cleaning scraper, so that the cleaning scraper can be replaced regularly, reducing the time for cleaning the concrete attached to the surface of the pressing roller and reducing the time for replacing the cleaning scraper, which is beneficial to improving the cleaning efficiency of the surface of the pressing roller.

[0015] 3. The utility model drives the material box to move through the first linear driving mechanism, so that the discharge pipe of the material box is directly above the ground depression, thereby facilitating the flow of the concrete inside the material box along the discharge pipe to the surface of the guide inclined plate, and then guiding it from the surface of the guide inclined plate into the ground depression to level the ground. In this way, the concrete has a buffer before falling into the ground depression, thus ensuring the accuracy of the concrete feeding position. Moreover, the guide inclined plate and the fixed plate form an inverted trapezoidal guide space to accelerate the flow of the concrete. At the same time, the pressing rollers in the rolling press area are in contact with the ground to ensure uniform compaction of the concrete.

[0016] 4. When the utility model is in use, by starting the driving motor, the driving motor drives the reciprocating lead screw to rotate. The reciprocating lead screw drives the moving block to move left and right along the first moving groove, and then drives the material box to move left and right, so that the discharge pipe is located at the ground depression. Then, the valve is rotated and opened, and the concrete inside the material box flows along the discharge pipe to the surface of the guide inclined plate. The telescopic movement of the electric push rod drives the pushing scraper to push downward along the guide inclined plate, and then the concrete on the surface of the guide inclined plate is evenly transported to the ground depression to level the ground, reducing the time for manual leveling of the ground depression and reducing the time for adjusting the filling position, which is beneficial to improving the efficiency of filling the ground depression.

[0017] In summary, the utility model is convenient for regularly replacing the cleaning scraper, reducing the time for cleaning the concrete adhered to the surface of the pressing rollers and reducing the time for replacing the cleaning scraper, which is beneficial to improving the efficiency of cleaning the surface of the pressing rollers. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the utility model.

[0019] Figure 2 is the internal structural schematic diagram of the top plate section of the utility model.

[0020] Figure 3 is the partially enlarged structural schematic diagram of the scraping mechanism of the utility model.

[0021] Figure 4 is Figure 3 the enlarged structural schematic diagram of point A of

[0022] Figure 5 is Figure 3 the enlarged structural schematic diagram of point B of

[0023] The reference numerals are: 1, top plate; 2, material box; 3, discharge pipe; 4, valve; 5, side plate; 6, support plate; 7, feeding chute; 8, driving motor; 9, scraping mechanism; 91, threaded rotating rod; 92, moving strip plate; 93, spring column; 94, mounting plate; 941, mounting groove; 95, cleaning scraper; 951, docking groove; 952, moving groove; 953, fixed jack; 96, docking block; 97, spring; 98, sliding rod; 99, dial block; 910, fixed insertion rod; 10, fixing plate; 11, guiding inclined plate; 12, electric push rod; 13, telescopic rod; 14, pushing scraper; 15, first moving groove; 16, reciprocating lead screw; 17, moving block; 18, second moving groove; 19, pressing roller; 20, baffle plate. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0025] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] Such as Figures 1 to 5As shown in the figure, the utility model provides a floor concrete spreading device for building construction, which includes a horizontally arranged top plate 1. On both sides of the top plate 1, there are installed side plates 5 that are parallel to each other and vertically arranged. Below the top plate 1 and between the two side plates 5, there are arranged an inclined feeding chute 11 and a vertically arranged fixing plate 10. Both the feeding chute 11 and the fixing plate 10 are perpendicular to the side plates 5. The bottoms of the two side plates 5, the feeding chute 11 and the fixing plate 10 are in the same plane. The fixing plate 10 divides the space below the top plate 1 and between the two side plates 5 into a feeding area and a rolling area. The feeding chute 11 is located in the feeding area. The feeding chute 11 and the fixing plate 10 are arranged opposite to each other. The opposite surfaces of the feeding chute 11 and the fixing plate 10 enclose a feeding space in the shape of an inverted trapezoid with a large top opening and a small bottom outlet. On the top plate 1, there is a feeding groove 7 that is communicated with the top opening of the feeding space. The feeding groove 7 is arranged between the two side plates 5 and is perpendicular to the side plates 5. The feeding chute 11 is arranged directly below the feeding groove 7 (after the material enters from the feeding groove 7, it will first fall onto the feeding chute 11 and then be discharged from the bottom outlet through the guiding action of the feeding chute 11). Near the feeding groove 7 on the top plate 1, there is a first linear driving mechanism. On the moving end of the first linear driving mechanism, there is installed a material box 2. The first linear driving mechanism drives the material box 2 to move along a direction parallel to the feeding groove 7. The outlet of the discharge pipe 3 of the material box 2 is communicated with the feeding groove 7. A valve 4 is installed on the discharge pipe 3. Inside the rolling area and between the two side plates 5, there is installed a pressing roller 19. The roller shaft of the pressing roller 19 is perpendicular to the side plates 5. The bottom of the pressing roller 19 extends out of the rolling area and contacts the ground.

[0027] Furthermore, the top of the feeding chute 11 is fixed to the top plate 1 through the fixing plate 10. The bottom of the feeding chute 11 is fixed with a support plate 6 that is arranged parallel to the top plate 1. The support plate 6 is arranged between the bottoms of the two side plates 5. In the initial state, the device is supported on the ground by the support plate 6 and the pressing roller 19. In the working state, the device is supported on the ground by the pressing roller to achieve rolling.

[0028] A pushing device is also installed on one side of the material guiding inclined plate 11 facing the blanking area. The pushing device includes an electric push rod 12, a telescopic rod 13 and a pushing scraper 14. The length of the pushing scraper 14 matches the width of the material guiding inclined plate 11. The scraping side of the pushing scraper 14 is always in contact with the material guiding inclined plate 11. The pushing scraper 14 is driven by the electric push rod 12 to move along the material guiding inclined plate 11 from the inlet to the outlet of the material guiding space. Specifically: The middle of the back of the pushing scraper 14 is connected to the telescopic end of the electric push rod 12. The fixed end of the electric push rod 12 is fixed at the top of the material guiding inclined plate 11. The two sides of the pushing scraper 14 are symmetrically installed with telescopic rods 13 centered on the electric push rod 12. The fixed ends of the telescopic rods 13 are also fixed at the top of the material guiding inclined plate 11. In the initial state, the pushing scraper 14 is close to the top of the material guiding inclined plate 11 and far from the projection of the feeding trough 7 on the material guiding inclined plate 11. During use, when the material falls from the feeding trough 7 onto the material guiding inclined plate 11, the pushing scraper 14 is driven to move downward along the material guiding inclined plate 11 by the telescopic movement of the electric push rod 12, so as to push the material out from the outlet of the material guiding space. By controlling the moving speed of the pushing scraper 14, the discharging speed of the concrete on the surface of the material guiding inclined plate 11 can be controlled, so that the concrete can fall evenly to the sunken area on the ground, leveling the ground, reducing the time for manual leveling of the sunken area on the ground, reducing the time for adjusting the filling position, and improving the efficiency of filling the sunken position on the ground.

[0029] The first linear driving mechanism includes a first moving groove 15 arranged in parallel with the feeding trough 7. A reciprocating lead screw 16 is rotatably installed in the first moving groove 15. The reciprocating lead screw 16 is driven to rotate by a driving motor 8. A moving block 17 is slidably installed in the first moving groove 15. The moving block 17 is threadedly connected to the reciprocating lead screw 16. The material box 2 is installed on the moving block 17. The material box 2 is driven to move in the first moving groove 15 by the first linear driving mechanism. Specifically: During use, by starting the driving motor 8, the driving motor 8 drives the reciprocating lead screw 16 to rotate. The reciprocating lead screw 16 drives the moving block 17 to move left and right along the first moving groove 15, thereby driving the material box 2 to move left and right, so that the discharging pipe 3 is directly above the sunken area on the ground. Then, rotate and open the valve 4, and the concrete inside the material box 2 flows onto the surface of the material guiding inclined plate 11 along the discharging pipe 3.

[0030] A scraping mechanism 9 is also installed on the pressing roller 19; the scraping mechanism 9 includes a threaded rotating rod 91, a moving strip 92, a spring column 93, a mounting plate 94, and a cleaning scraper 95. A second moving groove 18 is formed on the bottom surface of the top plate 1 above the pressing roller 19. The second moving groove 18 is arranged in parallel with the side plate 5. The threaded rotating rod 91 is rotatably assembled in the second moving groove 18. One end of the threaded rotating rod 91 extends out of the top plate 1 to form an adjusting end. A handle for conveniently rotating the threaded rotating rod 91 is installed on the adjusting end of the threaded rotating rod 91. The top end of the moving strip 92 is slidably installed in the second moving groove 18, and the top end of the moving strip 92 is threadedly connected to the threaded rotating rod 91. The bottom end of the moving strip 92 is connected to the mounting plate 94 through the spring column 93. The spring column 93 is arranged radially along the pressing roller 19. The mounting plate 94 is arranged at a position close to the middle of the pressing roller 19 and is parallel to the roller shaft of the pressing roller 19. Both ends of the mounting plate 94 on the side away from the spring column 93 are connected to the cleaning scraper 95 through a clamping mechanism. The two clamping mechanisms are symmetrically arranged with the spring column 93 as the center. The cleaning scraper 95 is arranged in parallel with the mounting plate 94. The length of the cleaning scraper 95 matches the axial length of the pressing roller 19; by rotating the threaded rotating rod 91, the threaded rotating rod 91 drives the moving strip 92 to move towards the pressing roller 19, so that the cleaning scraper 95 contacts the pressing roller 19. Under the rebounding force of the spring column 93, a pre-tightening force is generated between the cleaning scraper 95 and the pressing roller 19 to ensure that the cleaning scraper 95 is in close contact with the pressing roller 19. When the pressing roller 19 rolls, the cleaning scraper 95 separates the concrete attached to the surface of the pressing roller 19;

[0031] The clamping mechanism includes mounting grooves 941 symmetrically arranged on both sides of the mounting plate 94, the mounting grooves 941 penetrate the mounting plate 94 in the thickness direction, a slide bar 98 parallel to the cleaning scraper 95 is fixed in the mounting groove 941, a shift block 99 is slidably connected in the mounting groove 941, the middle part of the shift block 99 is sleeved on the slide bar 98, and the two ends of the shift block 99 extend from the two ends of the mounting plate 94 respectively, the end of the shift block 99 close to the spring column 93 is the shift end, and the other end is the clamping end, and a spring 97 is also sleeved on the slide bar 98, one end of the spring 97 is fixed in the mounting groove 941, and the other end is fixed on the shift block 99, a fixed plug rod 910 is installed on the clamping end of the shift block 99 and on the side away from the spring 97, the fixed plug rod 910 is parallel to the slide bar 98, and the cleaning scraper 95 is parallel to the mounting groove 941. A movable groove 952 matching the size of the shift block 99 is provided at a position corresponding to the mounting groove 941, and the length of the movable groove 952 is greater than the sum of the length of the fixed plug hole 953 and the thickness of the shift block 99. A fixed plug hole 953 matching the size of the fixed plug rod 910 is provided in the movable groove 952 on the side away from the spring 97. When in the installed state, the clamping end of the shift block 99 is installed in the movable groove 952, and the fixed plug rod 910 is inserted in the fixed plug hole 953, and the spring 97 prevents the fixed plug rod 910 from being separated from the fixed plug hole 953; when disassembling, the clamping end of the shift block 99 is pushed to compress the spring 97, and the clamping end of the shift block 99 moves in the movable groove 952, so that the fixed plug rod 910 is separated from the fixed plug hole 953, thereby realizing the separation of the cleaning scraper 95 from the mounting plate 94;

[0032] Furthermore, a docking block 96 is fixed to the middle of one side of the mounting plate 94 away from the spring column 93, and a docking groove 951 matching the docking block 96 is provided to the middle of one side of the cleaning scraper 95 close to the mounting plate 94. The cooperation between the docking block 96 and the docking groove 951 ensures that the cleaning scraper 95 can be accurately aligned with the mounting plate 94 during installation, thereby improving the efficiency of installation.

[0033] With the above structure, when the device is working, a push handle is installed on the device or the device is hung on other walking mechanisms, and the device is moved to the sunken ground that needs to be poured, and then the driving motor 8 is started, and the driving motor 8 drives the reciprocating screw 16 to rotate, and the reciprocating screw 16 drives the moving block 17 to move left and right along the first moving groove 15, thereby driving the material box 2 to move left and right, so that the discharge pipe 3 is directly above the depression of the ground, and then the valve 4 is rotated to open, and the concrete inside the material box 2 flows along the discharge pipe 3 to the surface of the guide inclined plate 11, and the push scraper 14 is driven by the extension and contraction of the electric push rod 12 to push downward along the guide inclined plate 11, so that the concrete on the surface of the guide inclined plate 11 is uniformly transmitted to the depression of the ground, and the ground is leveled, and at the same time, the device is driven to move, so that the pressing roller 19 rotates and rolls to flatten the position where the concrete is poured, thereby realizing the paving of the floor concrete;

[0034] Since a large amount of concrete is easily attached to the surface of the pressing roller 19 after construction, which affects subsequent construction, the threaded rotating rod 91 is rotated at this time, and the threaded rotating rod 91 drives the moving strip 92 to move toward the pressing roller 19, thereby driving the cleaning scraper 95 to move toward the pressing roller 19. Through the provided spring column 93, under the rebound force of the spring column 93, the cleaning scraper 95 is closely contacted with the surface of the pressing roller 19, and the device is moved again to drive the pressing roller 19 to rotate, so that the concrete attached to the surface of the pressing roller 19 is hung off by the cleaning scraper 95, so that the concrete attached to the surface of the pressing roller 19 falls to the ground, and then the fallen concrete can be cleaned;

[0035] When it is necessary to clean the cleaning scraper 95, first, the shift block 99 is toggled so that the shift block 99 moves along the mounting groove 941 to squeeze the spring 97, and the shift block 99 moves along the movable groove 952, and the fixed plug rod 910 is disengaged from the fixed plug hole 953. At this time, the cleaning scraper 95 is separated from the mounting plate 94, thereby facilitating the cleaning of the cleaning scraper 95; during installation, only the reverse operation is required, and the docking block 96 is aligned with the docking groove 951, so that the clamping end of the shift block 99 is placed in the movable groove 952, and then the shift block 99 is released. Under the rebound force of the spring 97, the fixed plug rod 910 is pushed and inserted into the fixed plug hole 953, thereby completing the limited fixation of the cleaning scraper 95, facilitating the regular replacement of the cleaning scraper 95, reducing the time for cleaning the concrete attached to the surface of the pressing roller 19, reducing the time for replacing the cleaning scraper 95, and improving the efficiency of cleaning the surface of the pressing roller 19.

[0036] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A floor concrete paving device for building construction, characterized in that: The invention comprises a top plate arranged horizontally, and side plates arranged vertically and parallel to each other are installed on both sides of the top plate. An inclined material guide inclined plate and a vertically arranged fixed plate are arranged below the top plate and between the two side plates. The material guide inclined plate and the fixed plate are perpendicular to the side plates. The bottom surfaces of the two side plates, the material guide inclined plate and the fixed plate are all in the same plane. The fixed plate divides the space below the top plate and between the two side plates into a material unloading area and a rolling area. The material guide inclined plate is in the material unloading area. The material guide inclined plate is parallel to the fixed plate. The opposite surfaces of the material guiding inclined plate and the fixed plate are enclosed to form an inverted trapezoidal material guiding space with a large top inlet and a small bottom outlet; a feeding trough connected to the top opening of the material guiding space is opened on the top plate, and a pressing roller is installed in the roller pressing area and between the two side plates, and the roller axis of the pressing roller is perpendicular to the side plate, and the bottom of the pressing roller extends out of the roller pressing area and contacts the ground, and a scraping mechanism is installed on the pressing roller, and the scraping mechanism includes a threaded rotating rod, a movable strip plate, a spring column, and a mounting plate. The top end of the movable plate is slidably mounted in the second movable groove, and the top end of the movable plate is threadedly connected to the threaded rotating rod. The bottom end of the movable plate is slidably mounted in the second movable groove, and the top end of the movable plate is threadedly connected to the threaded rotating rod. The bottom end of the movable plate is connected to the mounting plate through a spring column, and the mounting plate is arranged at a position close to the middle of the pressing roller and is parallel to the roller axis of the pressing roller. The mounting plate is connected to the cleaning scraper through a clamping mechanism at both ends of the side away from the spring column. The cleaning scraper and the mounting plate are arranged parallel to the side plate, and the length of the cleaning scraper matches the axial length of the pressing roller; in the working state, the scraper end of the cleaning scraper is in contact with the outer surface of the pressing roller by rotating the threaded rotating rod, and the spring column controls the pre-tightening force between the cleaning scraper and the outer surface of the pressing roller.

2. A floor concrete paving device for construction according to claim 1, characterized in that: The locking mechanism comprises a mounting groove symmetrically arranged on both sides of the mounting plate, the mounting groove penetrating the thickness direction of the mounting plate, a sliding rod parallel to the cleaning scraper plate is fixed in the mounting groove, the sliding rod is arranged parallel to the cleaning scraper plate, and a shift block perpendicular to the sliding rod is slidably connected in the mounting groove, the middle part of the shift block is sleeved on the sliding rod, and two ends of the shift block extend from the two ends of the mounting plate respectively, one end of the shift block close to the spring column is a shift end, and the other end is a clamping end, and a spring is also sleeved on the sliding rod, one end of the spring is fixed in the mounting groove, and the other end is fixed on the shift block. A fixed plug rod is installed on the clamping end of the shift block and on a side away from the spring, and the fixed plug rod is parallel to the sliding rod, and the cleaning scraper is provided with a moving groove matching the size of the shift block at a position corresponding to the mounting groove, and the length of the moving groove is greater than the sum of the length of the fixed plug hole and the thickness of the shift block, and a fixed plug hole matching the size of the fixed plug rod is provided in the moving groove and on a side away from the spring.

3. A floor concrete paving device for construction according to claim 2, characterized in that: A docking block is fixed on the middle of one side of the mounting plate away from the spring column, and a docking groove matching the docking block is provided on the middle of one side of the cleaning scraper close to the mounting plate.

4. A floor concrete paving device for construction according to any one of claims 1 to 3, characterized in that: The feed trough is arranged between the two side plates and is perpendicular to the side plates in front. The guide inclined plate is arranged directly below the feed trough. A first linear drive mechanism is arranged on the top plate near the feed trough. A material box for storing concrete is installed on the movable end of the first linear drive mechanism. The first linear drive mechanism drives the material box to move in a direction parallel to the feed trough. The outlet of the discharge pipe of the material box is connected to the feed trough, and a valve is installed on the discharge pipe.

5. A floor concrete paving device for construction according to claim 4, characterized in that: The first linear drive mechanism includes a first movable groove arranged parallel to the feed groove, a reciprocating screw is rotatably installed in the first movable groove, the reciprocating screw is driven to rotate by a driving motor, a movable block is slidably installed in the first movable groove, the movable block is threadedly connected to the reciprocating screw, and the material box is installed on the movable block.

6. A floor concrete paving device for construction according to claim 4, characterized in that: The top of the material guide inclined plate is fixed to the top plate through a fixing plate, and the bottom of the material guide inclined plate is fixed with a supporting plate arranged parallel to the top plate, and the supporting plate is arranged between the bottoms of the two side plates. In the initial state, the device is supported on the ground by the supporting plate and the pressing roller. In the working state, the device is supported on the ground by the pressing roller to achieve rolling.

7. A floor concrete paving device for construction according to claim 4, characterized in that: A pushing device is also installed on the side of the material guide inclined plate facing the unloading area. The pushing device includes an electric push rod and a pushing scraper. The length of the pushing scraper matches the width of the material guide inclined plate. The scraper side of the pushing scraper is always in contact with the material guide inclined plate. The pushing scraper is driven by the electric push rod to move along the material guide inclined plate from the inlet to the outlet of the material guide space. In the initial state, the pushing scraper is close to the top of the material guide inclined plate and away from the projection of the feed trough on the material guide inclined plate.

8. A floor concrete paving device for construction according to claim 7, characterized in that: The middle part of the back of the push scraper is connected to the telescopic end of the electric push rod, the fixed end of the electric push rod is fixed to the top of the material guide inclined plate, and telescopic rods are symmetrically installed on both sides of the push scraper with the electric push rod as the center. The fixed end of the telescopic rod is also fixed to the top of the material guide inclined plate, and the telescopic rod is parallel to the electric push rod.

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