阅读说明：本技术 一种较少气泡产生的土木工程用混凝土抹平装置 (Concrete floating device for civil engineering that less bubble produced ) 是由 沈玉 周宝宏 李金龙 杨彪 蔡欣 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种较少气泡产生的土木工程用混凝土抹平装置,包括：安装架,所述安装架的右侧前后两端均设置有支杆；第一蓄电池,所述第一蓄电池固定安装在安装架的上表面；侧板,所述侧板焊接在安装架的下表面后侧；底架,所述安装架的下表面左端焊接连接有纵截面呈“L”字型结构的底架；折线杆,所述第一矩形板的右侧面固定有折线杆,所述折线杆的底端前后两端均固定有手动伸缩杆,所述定位板的下表面均匀焊接连接有振捣杆。该较少气泡产生的土木工程用混凝土抹平装置,避免滚轮上粘附较多的混凝土,使得刮板在混凝土上作用的更加均匀,利用振捣杆的上下移动去除混凝土内的气泡,且振捣杆便于适应不同厚度的混凝土。(The invention discloses a concrete floating device for civil engineering with less bubble generation, which comprises: the front end and the rear end of the right side of the mounting rack are provided with supporting rods; the first storage battery is fixedly arranged on the upper surface of the mounting frame; the side plate is welded on the rear side of the lower surface of the mounting frame; the left end of the lower surface of the mounting rack is connected with a bottom rack with an L-shaped longitudinal section in a welding mode; the line folding rod is fixed on the right side face of the first rectangular plate, manual telescopic rods are fixed at the front end and the rear end of the bottom end of the line folding rod, and the lower surface of the positioning plate is evenly connected with the vibrating rod in a welded mode. This concrete floating device for civil engineering that less bubble produced avoids the more concrete of adhesion on the gyro wheel for the more even of scraper blade effect on the concrete utilizes reciprocating of the pole of vibrating to get rid of the bubble in the concrete, and the pole of vibrating is convenient for adapt to the concrete of different thickness.)

1. A concrete floating device for civil engineering that less bubble produced, its characterized in that: the method comprises the following steps:

the mounting rack comprises a mounting rack (1), wherein supporting rods (2) are arranged at the front end and the rear end of the right side of the mounting rack (1), a handle (3) is welded at the top ends of the supporting rods (2), and a rubber ring (4) is sleeved on the outer side of the handle (3);

the battery scraping device comprises a first storage battery (5), wherein the first storage battery (5) is fixedly arranged on the upper surface of a mounting rack (1), supporting rods (6) are welded at the front end and the rear end of the right end of the lower surface of the mounting rack (1), rollers (7) are rotatably connected to the bottom ends of the supporting rods (6), a scraping structure (8) is installed at the bottom end of each supporting rod (6), an inserted rod (9) penetrates through the left side of each supporting rod (6), and a supporting rod (2) is welded to the right side surface of the top end of each supporting rod (6);

the side plate (10) is welded on the rear side of the lower surface of the mounting frame (1), a servo motor (11) is fixedly mounted on the rear side surface of the side plate (10) through a screw, a rotating shaft (12) is fixed at the front end of the servo motor (11), and a linkage mechanism (13) is arranged on the front side of the side plate (10);

the lower surface left end welded connection of mounting bracket (1) has chassis (14) that the longitudinal section is "L" style of calligraphy structure, the right side welding of chassis (14) has first board (15) of accepting, the lower surface welding of chassis (14) has the second to accept board (16), the right side of first board (15) of accepting is provided with first rectangular plate (17), the second is accepted the below of board (16) and is provided with second rectangular plate (18), the inside top of second rectangular plate (18) is fixed with second battery (19), the below electric connection of second battery (19) has motor (20), the output of motor (20) is fixed with intermediate gear (21), the outside meshing of intermediate gear (21) has chain (22), both ends all meshing have side gear (23) around chain (22), the lower surface of side gear (23) and intermediate gear (21) all is fixed with floating plate (24), the troweling plates (24) are arranged below the second rectangular plate (18) at equal intervals;

broken line pole (26), the right flank of first rectangular plate (17) is fixed with broken line pole (26), both ends all are fixed with manual telescopic link (27) around the bottom of broken line pole (26), the output of broken line pole (26) is fixed with operation panel (28), the bottom mounting of operation panel (28) has locating plate (29), the even welded connection of lower surface of locating plate (29) has pole (30) of smashing that shakes.

2. A concrete troweling apparatus for civil engineering work with less generation of bubbles according to claim 1, characterized in that: scraping structure (8) include arc (801), scraper blade (802) and connecting plate (803), the right flank of bracing piece (6) is provided with arc (801), and the medial surface of arc (801) is fixed with scraper blade (802), the top of arc (801) is fixed with connecting plate (803).

3. A concrete troweling apparatus for civil engineering work with less generation of bubbles according to claim 2, characterized in that: the inner side surface of the scraper (802) is attached to the outer side surface of the roller (7), and the longitudinal section of the scraper (802) is of a triangular structure.

4. A concrete troweling apparatus for civil engineering work with less generation of bubbles according to claim 2, characterized in that: the connecting plate (803) penetrates through the bottom end of the supporting rod (6), and the connecting plate (803) is fixedly connected with the supporting rod (6) through the inserting rod (9).

5. A concrete troweling apparatus for civil engineering work with less generation of bubbles according to claim 1, characterized in that: the linkage mechanism (13) comprises a first connecting disc (1301), a transverse roller (1302), a second connecting disc (1303), a vertical rod (1304) and a transverse rod (1305), wherein the first connecting disc (1301) is welded on the front side of the rotating shaft (12), the transverse roller (1302) is fixed on the front side of the first connecting disc (1301), the second connecting disc (1303) is welded on the front side of the transverse roller (1302), the front ends of the first connecting disc (1301) and the second connecting disc (1303) are connected with the vertical rod (1304) through bolts, and the transverse rod (1305) is connected on the front side of the vertical rod (1304) through bolts.

6. A concrete troweling apparatus for civil engineering work with less generation of bubbles according to claim 1, characterized in that: short rods (25) are welded at the front and rear ends of the lower surface of the first rectangular plate (17) and the front and rear ends of the right side surface of the second rectangular plate (18), and a middle block (32) is welded at the left end of the first rectangular plate (17) and the top end of the second rectangular plate (18).

7. A concrete troweling apparatus for civil engineering work with less generation of bubbles according to claim 1, characterized in that: the first bearing plate (15) and the second bearing plate (16) are perpendicular to each other, and sliding rails (31) are arranged at the right end of the first bearing plate (15) and the bottom end of the second bearing plate (16).

8. The concrete screeding device for civil engineering work with less generation of bubbles according to claim 5, wherein: the vertical rod (1304) and the cross rod (1305) are connected with the short rod (25) through bolts, and the vertical rod (1304) and the cross rod (1305) are eccentrically arranged on the first connecting disc (1301) and the second connecting disc (1303).

9. The concrete screeding device for civil engineering work with less generation of bubbles according to claim 6, wherein: the middle block (32) is connected with the first bearing plate (15) and the second bearing plate (16) through a sliding rail (31), and the outer end section of the middle block (32) is of a T-shaped structure.

Technical Field

The invention relates to the technical field of civil engineering concrete trowelling, in particular to a concrete trowelling device for civil engineering with less air bubbles.

Background

In the civil engineering construction process, after concrete is poured, a concrete trowelling device is needed to trowel the concrete, so that the pouring effect of the concrete is ensured, the outer side surface of the concrete is leveled, the construction quality is ensured, the use performance of concrete trowelling equipment is improved, the concrete trowelling machine can simultaneously carry out tamping and trowelling processes on the concrete ground, and various concrete trowelling equipment is provided on the market;

the invention discloses a concrete trowelling machine, wherein springs are connected to the bottom of a connecting block at equal intervals, a pressing plate is connected to the bottom of a hollow body, baffles are connected to the back faces and the front faces of two supporting rods, first rollers are sleeved on the outer sides of a first rotating shaft and a second rotating shaft, trowelling plates are connected to the outer sides of a conveyor belt at equal intervals, a first gear is sleeved on the front face of the first rotating shaft in a penetrating mode through the first roller, a second gear is sleeved on the front face of the second rotating shaft in a penetrating mode through the first roller, a driven wheel is sleeved on the front face of the first rotating shaft in a penetrating mode through the first gear, a driving wheel is sleeved on the front face of a motor in a penetrating mode through a shaft, and a protruding block is connected to the front face of the driving wheel. The invention uses the pressing plate, the convex block and the troweling plate, so that the concrete troweling machine can simultaneously carry out tamping and troweling processes on the concrete ground, thereby realizing the purpose of good practicability of the concrete troweling machine, but still has the following problems:

1. concrete is easily adhered to the roller, so that the advancing of the roller is influenced, and the flatness of the concrete is influenced;

2. the troweling plate has an insufficient uniform action on the concrete, the action range is small, and the working strength of workers is increased;

3. the concrete contains air bubbles inside, and the air bubbles in the concrete are not convenient to remove only by pressing the pressing plate, so that the vibration effect is influenced, and therefore, the concrete floating device for civil engineering with less air bubbles is provided, so that the problems provided in the prior art are solved.

Disclosure of Invention

The invention aims to provide a civil engineering concrete floating device with less bubbles, and the device is used for solving the problems that the prior civil engineering concrete floating device proposed in the background art is easy to adhere concrete on a roller, influences the advancing of the roller and influences the flatness of the concrete, a floating plate acts on the concrete unevenly, the acting range is small, the working strength of workers is increased, the bubbles are contained in the concrete, and the bubbles in the concrete are not conveniently removed only by pressing of a pressing plate, so that the vibrating effect is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a concrete floating device for civil engineering with less generation of air bubbles, comprising:

the front end and the rear end of the right side of the mounting frame are respectively provided with a strut, the top ends of the struts are connected with a handle in a welding mode, and the outer side of the handle is sleeved with a rubber ring;

the first storage battery is fixedly arranged on the upper surface of the mounting rack, support rods are welded at the front end and the rear end of the right end of the lower surface of the mounting rack, the bottom ends of the support rods are rotatably connected with rollers, the bottom ends of the support rods are provided with scraping structures, insertion rods penetrate through the left sides of the support rods, and support rods are welded on the right side surfaces of the top ends of the support rods;

the side plate is welded on the rear side of the lower surface of the mounting frame, a servo motor is fixedly mounted on the rear side surface of the side plate through a screw, a rotating shaft is fixed at the front end of the servo motor, and a linkage mechanism is arranged on the front side of the side plate;

the left end of the lower surface of the mounting rack is welded with the underframe of which the longitudinal section is of an L-shaped structure, the right side of the underframe is welded with a first bearing plate, the lower surface of the underframe is welded with a second bearing plate, the right side of the first bearing plate is provided with a first rectangular plate, a second rectangular plate is arranged below the second bearing plate, the top end of the interior of the second rectangular plate is fixedly provided with a second storage battery, the lower part of the second storage battery is electrically connected with a motor, the output end of the motor is fixedly provided with an intermediate gear, the outer side of the intermediate gear is meshed with a chain, the front end and the rear end of the chain are respectively meshed with a side gear, the lower surfaces of the side gear and the intermediate gear are respectively fixedly provided with a troweling plate, and the troweling plates are arranged below the second rectangular plate at equal intervals;

the utility model discloses a vibrating rod, including the broken line pole, the right flank of first rectangular plate is fixed with the broken line pole, both ends all are fixed with manual telescopic link around the bottom of broken line pole, the output of broken line pole is fixed with the operation panel, the bottom mounting of operation panel has the locating plate, the even welded connection of lower surface of locating plate has the pole of pounding.

Preferably, strike off the structure and include arc, scraper blade and connecting plate, the right flank of bracing piece is provided with the arc, and the medial surface of arc is fixed with the scraper blade, the top of arc is fixed with the connecting plate.

Preferably, the inner side surface of the scraper is attached to the outer side surface of the roller, and the longitudinal section of the scraper is of a triangular structure.

Preferably, the connecting plate runs through the bottom of bracing piece, and the connecting plate passes through inserted bar and bracing piece fixed connection.

Preferably, the linkage mechanism includes first connection pad, horizontal roller, second connection pad, montant and horizontal pole, the welding of the leading flank of pivot has first connection pad, the leading flank of first connection pad is fixed with the horizontal roller, the welding of the leading flank of horizontal roller has the second connection pad, the front end of first connection pad and second connection pad all has the montant through the latch connection, the front side of montant has the horizontal pole through the latch connection.

Preferably, both ends all weld the quarter butt around the lower surface of first rectangular plate and both ends around the right flank of second rectangular plate, the left end of first rectangular plate and the equal welded connection in top of second rectangular plate have the middle piece.

Preferably, the first bearing plate and the second bearing plate are perpendicular to each other, and slide rails are arranged at the right end of the first bearing plate and the bottom end of the second bearing plate.

Preferably, the vertical rod and the cross rod are connected with the short rod through the bolts and are eccentrically arranged on the first connecting disc and the second connecting disc.

Preferably, the middle block is connected with the first bearing plate and the second bearing plate through sliding rails, and the cross section of the outer end of the middle block is of a T-shaped structure.

Compared with the prior art, the invention has the beneficial effects that: the concrete trowelling device for civil engineering with less bubbles avoids more concrete from adhering to the roller, so that the trowelling plate acts more uniformly on the concrete, bubbles in the concrete are removed by utilizing the up-and-down movement of the vibrating rod, and the vibrating rod is convenient to adapt to the concrete with different thicknesses;

1. the scraping structure is arranged on the connecting plate, the scraping plate in the scraping structure is used for scraping concrete adhered to the outer side face of the roller in the rolling process of the roller, the concrete is prevented from being accumulated on the roller, the inserting rod is lifted upwards to be separated from the connecting plate, and then the connecting plate is moved outwards, so that the scraping structure is convenient to detach;

2. the linkage mechanism, the second rectangular plate and the troweling plate are arranged, the servo motor drives the second rectangular plate to move left and right through the linkage mechanism, and a motor in the second rectangular plate drives the troweling plate to rotate through the middle gear, the chain and the side gear, so that the troweling plate moves left and right while rotating, the action range of the troweling plate is expanded, and the troweling plate acts on concrete more uniformly;

3. be provided with interlock mechanism, first rectangular plate, manual telescopic link and the pole of vibrating, servo motor passes through interlock mechanism and drives first rectangular plate and the pole of vibrating and reciprocate, utilizes the reciprocating of the pole of vibrating and gets rid of the bubble in the concrete, improves the floating effect, adjusts the height of the pole of vibrating through manual telescopic link, is convenient for adapt to the concrete of different thickness.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is a schematic view of the connection structure of the intermediate block and the first receiving plate according to the present invention;

FIG. 5 is a bottom sectional view of a second rectangular plate according to the present invention;

FIG. 6 is a schematic view of the connection structure of a second rectangular plate and a short rod according to the present invention;

FIG. 7 is a schematic view of the connection structure of the first connecting plate and the cross roller according to the present invention;

FIG. 8 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 9 is a schematic view of the connection structure of the connection plate and the arc plate according to the present invention.

In the figure: 1. a mounting frame; 2. a strut; 3. a handle; 4. a rubber ring; 5. a first storage battery; 6. a support bar; 7. a roller; 8. a scraping structure; 801. an arc-shaped plate; 802. a squeegee; 803. a connecting plate; 9. inserting a rod; 10. a side plate; 11. a servo motor; 12. a rotating shaft; 13. a linkage mechanism; 1301. a first splice tray; 1302. a transverse roller; 1303. a second connecting disc; 1304. a vertical rod; 1305. a cross bar; 14. a chassis; 15. a first bearing plate; 16. a second bearing plate; 17. a first rectangular plate; 18. a second rectangular plate; 19. a second storage battery; 20. a motor; 21. an intermediate gear; 22. a chain; 23. a side gear; 24. smearing the plate; 25. a short bar; 26. a wire-folding rod; 27. a manual telescopic rod; 28. an operation panel; 29. positioning a plate; 30. vibrating a tamping rod; 31. a slide rail; 32. and (4) a middle block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: a concrete floating device with few bubbles for civil engineering comprises an installation frame 1, supporting rods 2, a handle 3, a rubber ring 4, a first storage battery 5, a supporting rod 6, rollers 7, a scraping structure 8, an arc-shaped plate 801, a scraper 802, a connecting plate 803, an inserting rod 9, a side plate 10, a servo motor 11, a rotating shaft 12, a linkage mechanism 13, an underframe 14, a first bearing plate 15, a second bearing plate 16, a first rectangular plate 17, a second rectangular plate 18, a second storage battery 19, a motor 20, an intermediate gear 21, a chain 22, a side gear 23, a floating plate 24, a short rod 25, a broken line rod 26, a manual telescopic rod 27, an operation plate 28, a positioning plate 29, a vibrating rod 30, a sliding rail 31 and an intermediate block 32, wherein the supporting rods 2 are arranged at the front end and the rear end of the right side of the installation frame 1, the handle 3 is welded to the top end of the supporting rods 2, and the rubber ring 4 is sleeved on the outer side of the handle 3;

the device comprises a first storage battery 5, wherein the first storage battery 5 is fixedly arranged on the upper surface of a mounting rack 1, supporting rods 6 are welded at the front end and the rear end of the right end of the lower surface of the mounting rack 1, the bottom end of each supporting rod 6 is rotatably connected with a roller 7, a scraping structure 8 is arranged at the bottom end of each supporting rod 6, an inserted rod 9 penetrates through the left side of each supporting rod 6, and a supporting rod 2 is welded on the right side surface of the top end of each supporting rod 6;

the side plate 10 is welded on the rear side of the lower surface of the mounting frame 1, a servo motor 11 is fixedly mounted on the rear side surface of the side plate 10 through screws, a rotating shaft 12 is fixed at the front end of the servo motor 11, and a linkage mechanism 13 is arranged on the front side of the side plate 10;

the left end of the lower surface of the mounting rack 1 is welded and connected with a base frame 14 with an L-shaped longitudinal section, the right side of the base frame 14 is welded with a first bearing plate 15, the lower surface of the base frame 14 is welded with a second bearing plate 16, the right side of the first bearing plate 15 is provided with a first rectangular plate 17, the lower side of the second bearing plate 16 is provided with a second rectangular plate 18, the top end of the inner part of the second rectangular plate 18 is fixed with a second storage battery 19, the lower side of the second storage battery 19 is electrically connected with a motor 20, the output end of the motor 20 is fixed with a middle gear 21, the outer side of the middle gear 21 is meshed with a chain 22, the front end and the rear end of the chain 22 are respectively meshed with a side gear 23, the lower surfaces of the side gear 23 and the middle gear 21 are respectively fixed with a troweling plate 24, and the troweling plates 24 are arranged below the second rectangular plate 18 at equal intervals;

a folding line rod 26 is fixed on the right side face of the first rectangular plate 17, manual telescopic rods 27 are fixed at the front end and the rear end of the bottom end of the folding line rod 26, an operating plate 28 is fixed at the output end of the folding line rod 26, a positioning plate 29 is fixed at the bottom end of the operating plate 28, and vibrating rods 30 are uniformly welded and connected to the lower surface of the positioning plate 29;

as in fig. 1, scrape structure 8 and include arc 801 in fig. 2 and fig. 9, scraper blade 802 and connecting plate 803, the right flank of bracing piece 6 is provided with arc 801, the medial surface of arc 801 is fixed with scraper blade 802, the top of arc 801 is fixed with connecting plate 803, utilize scraper blade 802 to clear up the concrete of adhesion on the gyro wheel 7, avoid the concrete to pile up on gyro wheel 7, the medial surface of scraper blade 802 and the laminating of the lateral surface of gyro wheel 7, the longitudinal section of scraper blade 802 is the triangle-shaped structure, the scraper blade 802 that utilizes the longitudinal section to be the triangle-shaped structure is convenient for scrape off the concrete fast, connecting plate 803 runs through the bottom of bracing piece 6, and connecting plate 803 passes through inserted bar 9 and bracing piece 6 fixed connection, make things convenient for the built-up connection of connecting plate 803 and bracing piece 6, thereby be convenient for take off and scrape structure 8.

As shown in fig. 1, 2, 3 and 7, the linkage mechanism 13 includes a first connection plate 1301, a horizontal roller 1302, a second connection plate 1303, a vertical rod 1304 and a horizontal rod 1305, the first connection plate 1301 is welded on the front side of the rotation shaft 12, the horizontal roller 1302 is fixed on the front side of the first connection plate 1301, the second connection plate 1303 is welded on the front side of the horizontal roller 1302, the vertical rod 1304 is connected on the front ends of the first connection plate 1301 and the second connection plate 1303 through bolts, the horizontal rod 1305 is connected on the front side of the vertical rod 1304 through bolts, the linkage mechanism 13 is used to transmit the power of the servo motor 11, the short rods 25 are welded on the front and rear ends of the lower surface of the first rectangular plate 17 and the front and rear ends of the right side of the second rectangular plate 18, the middle block 32 is welded on the left end of the first rectangular plate 17 and the top end of the second rectangular plate 18, the first receiving plate 15 and the second receiving plate 16 are vertically arranged, the slide rail 31 is arranged on the right end of the first receiving plate 15 and the bottom end of the second receiving plate 16, the moving directions of the first rectangular plate 17 and the second rectangular plate 18 are perpendicular to each other, the middle block 32 is connected with the first bearing plate 15 and the second bearing plate 16 through the sliding rail 31, the outer end section of the middle block 32 is of a T-shaped structure, the moving tracks of the first rectangular plate 17 and the second rectangular plate 18 are limited by the T-shaped structure of the middle block 32, the vertical rod 1304 and the cross rod 1305 are connected with the short rod 25 through the inserted pin, the vertical rod 1304 and the cross rod 1305 are eccentrically arranged on the first connecting disc 1301 and the second connecting disc 1303, and the vertical rod 1304 and the cross rod 1305 are driven to swing.

When the concrete floating device for civil engineering with less air bubbles is used, the length of the manual telescopic rod 27 is adjusted according to the thickness of concrete, so as to adjust the height positions of the positioning plate 29 and the vibrating rod 30, a worker holds the rubber ring 4 and the handle 3 by hands, the handle 3 is connected with the mounting frame 1 through the support rod 2 and the support rod 6, pushes the mounting frame 1 to move rightwards, and opens the servo motor 11 on the side plate 10 and the motor 20 in the second rectangular plate 18 in the figures 2 and 3;

the first storage battery 5 provides power for the servo motor 11, the rotating shaft 12 at the output end of the servo motor 11 is fixedly connected with the first connecting disc 1301 in the linkage mechanism 13 to drive the first connecting disc 1301, the transverse roller 1302 and the second connecting disc 1303 to rotate, as shown in fig. 2, 3 and 7, the vertical rod 1304 and the transverse rod 1305 are both connected with the first connecting disc 1301 and the second connecting disc 1303 through bolts, the vertical rod 1304 and the transverse rod 1305 swing along with the rotation of the first connecting disc 1301 and the second connecting disc 1303, the tail ends of the vertical rod 1304 and the transverse rod 1305 are both connected with the short rod 25 through bolts, the first rectangular plate 17 and the second rectangular plate 18 are both fixedly connected with the short rod 25, along with the swing of the vertical rod 1304 and the transverse rod 1305, the first rectangular plate 17 ascends and descends, the second rectangular plate 18 moves left and right, the left end of the first rectangular plate 17 and the top end of the second rectangular plate 18 are both connected with the middle block 32, and the middle block 32 slides in the sliding rails 31 arranged in the first receiving plate 15 and the second receiving plate 16, defining the moving locus of the first rectangular plate 17 and the second rectangular plate 18;

when the first rectangular plate 17 and the middle block 32 are lifted, the vibrating rod 30 connected through the broken line rod 26, the manual telescopic rod 27, the operating plate 28 and the positioning plate 29 is lifted, so that the vibrating rod 30 moves up and down in the concrete, the concrete is vibrated, and air bubbles in the concrete are removed;

the second storage battery 19 provides power for the motor 20, the motor 20 drives the middle gear 21 to rotate, as shown in fig. 5, the middle gear 21 is connected with 2 sets of side gears 23 through chains 22, under the transmission action of the side gears 23, the motor 20 drives the middle gear 21 and the side gears 23 to rotate, so that the middle gear 21 and the scrapers 24 below the side gears 23 rotate, and when the second rectangular plate 18 and the middle block 32 move left and right, the scrapers 24 are driven to move left and right, and the scrapers 24 move left and right while rotating, so that the action range of the scrapers 24 is expanded;

the outer side surface of the roller 7 is attached to the inner wall of the scraper 802, in the moving process of the roller 7, the scraper 802 is used for scraping off concrete adhered to the outer side surface of the roller 7, when the scraping structure 8 needs to be cleaned, the inserted rod 9 in fig. 2 is lifted upwards, then the arc-shaped plate 801 and the connecting plate 803 are pulled outwards, so that the connecting plate 803 is separated from the supporting rod 6, the scraping structure 8 is taken down, the scraping structure 8 is cleaned, and a series of operations of the concrete leveling device for civil engineering with less air bubbles are completed.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.