Concrete surface leveling device and method for constructing concrete floor surface

Abstract

To provide a concrete surface leveling device that can efficiently level concrete surfaces using relatively lightweight and simple means.SOLUTION: A concrete surface leveling device comprises: a leveling frame body which has a front edge extending in a first direction, a rear edge extending in the first direction and substantially parallel to the front edge, and a plurality of connecting edges extending in a second direction perpendicular to the first direction and connecting the front edge and the rear edge, that are arranged at intervals from each other in the first direction, and which forms a substantially rectangular frame area in plan view enclosed by the front edge, the rear edge, and the connecting edges in a horizontal direction and penetrates in a vertical direction, and in which bottom surfaces of the front edge and the rear edge are located on the same plane; and a vibrator attached to the leveling frame body.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a concrete surface leveling device that can be used for concrete floor construction and the like, and a concrete floor construction method. [Background technology]

[0002] When constructing a concrete floor, a construction frame is formed and fresh concrete is poured into the frame, and then it is leveled and formed using a trowel or a tombo. At this time, it is preferable to vibrate the concrete with a vibrator in order to remove air bubbles and homogenize the concrete.

[0003] However, with conventional methods using tools such as trowels and rakes, it is necessary to measure the height of the surface of the concrete that has been laid at a certain frequency and correct any deviations in order to form a concrete floor surface that is flat (horizontal in most cases) as intended.However, in order to form a concrete floor surface that is flat with precision, it is necessary to increase the frequency of height measurements, which results in a problem of time-consuming construction.

[0004] As a concrete construction method that can address these problems, for example, a method using a rotary-driven tube roller that rolls on rails installed on both sides of the construction area has been proposed. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2018-150701 Summary of the Invention [Problem to be solved by the invention]

[0006] However, conventional techniques using rotary-driven tube rollers have the problem that they can only level the concrete at the lowest point of the tube roller, so that unevenness may remain after a single pass of the rotary-driven tube roller. Furthermore, to form a sufficient concrete pool behind the roller in the direction of travel, the diameter of the rotary-driven tube roller must be increased, which creates the problem of increased equipment size.

[0007] Therefore, the present invention relates to a concrete surface leveling device that can efficiently level the surface of concrete using relatively lightweight and simple means, and a concrete floor construction method using the same. [Means for solving the problem]

[0008] The concrete surface leveling device according to the present invention is a leveling frame body having a front edge portion extending in a first direction, a rear edge portion extending in the first direction substantially parallel to the front edge portion, and a plurality of connecting edges extending in a second direction perpendicular to the first direction, connecting the front edge portion and the rear edge portion, and arranged at intervals in the first direction, wherein the front edge portion, the rear edge portion, and the connecting edges form a substantially rectangular frame area in a plan view that is surrounded in the horizontal direction and penetrates in the vertical direction, and the bottom surfaces of the front edge portion and the rear edge portion are located on the same plane; and a vibrator attached to the leveling frame.

[0009] The concrete surface leveling device of the present invention includes a leveling frame and a vibrator, which vibrates the concrete to remove air bubbles and homogenize it, thereby leveling the surface of the concrete being worked. Furthermore, because the leveling frame has parallel front and rear edges, it can level the surface twice with a single pass, thereby reducing unevenness remaining after the concrete surface leveling device has passed through. Furthermore, the area within the frame is vertically perforated, allowing the concrete surface to be visually observed from above after passing through the front edge and before the rear edge passes. This allows appropriate measures, such as pouring ready-mixed concrete into the area within the frame. Therefore, even with a compact and lightweight device, the concrete surface can be efficiently leveled and unevenness remaining after passing can be reduced. Furthermore, by working on a concrete floor using such a concrete surface leveling device, the need to measure the height of the concrete surface can be reduced or eliminated.

[0010] Also, for example, the multiple connecting edge portions may have a first connecting edge portion connecting one end of the front edge portion to one end of the rear edge portion, and a second connecting edge portion connecting the other end of the front edge portion to the other end of the rear edge portion.

[0011] A leveling frame body having a first connecting edge portion and a second connecting edge portion at one end and the other end can reduce the overall length while preventing the fresh concrete in the frame area from overflowing outside the construction frame during construction.

[0012] Furthermore, for example, the bottom surfaces of the first connection side portion and the second connection side portion may be located on the same plane as the bottom surfaces of the front side portion and the rear side portion.

[0013] Since the bottom surface of this type of leveling frame is at the same height as the part that extends beyond the construction area, it can be used regardless of the shape of the construction frame and can be flexibly applied to a variety of construction sites.

[0014] Furthermore, for example, the front side portion and the rear side portion are rectangular tubular shapes extending in the first direction, The width in the second direction of the cross section of the front side portion and the rear side portion taken along a plane perpendicular to the first direction is smaller than the width in the height direction of the cross section.

[0015] By making the cross-sectional shape of the front and rear edges that level the concrete surface a rectangular cylinder with a large width in the height direction, the strength of the leveling frame body can be increased and the problem of fresh concrete overflowing from the frame area can be prevented.

[0016] Furthermore, for example, the vibrator may be attached to the front side surface of the front edge portion along the first direction.

[0017] By attaching the vibrator to the front side surface, the vibrations of the vibrator can be transmitted to the entire leveling frame body, and even if the vibrator falls off the leveling frame body, it can be prevented from falling onto the leveled concrete surface.

[0018] Furthermore, for example, the vibrator may include a first vibrator attached to the front side surface of the front edge portion along the first direction from the center in the first direction toward one end of the front edge portion, and a second vibrator attached to the front side surface of the front edge portion along the first direction from the center toward the other end of the front edge portion.

[0019] In such a concrete surface leveling device, even if the overall length of the leveling frame is long, the vibrations from the vibrator can be transmitted evenly to the entire leveling frame.

[0020] A concrete floor construction method according to the present invention includes the steps of: preparing a concrete surface leveling device according to any one of the above; forming a construction frame surrounding a construction area; A step of pouring ready-mixed concrete into the construction area; positioning the concrete surface leveling device across the construction area; The method includes a process in which, while vibrating the leveling frame body with the vibrator, one side of the leveling frame body in the first direction is pressed against the upper surface of one of the construction frames that sandwich the construction area, and while pressing the other side of the leveling frame body in the first direction against the upper surface of the other of the construction frames that sandwich the construction area, the leveling frame body is moved in the second direction, and the ready-mixed concrete poured into the construction area is leveled between the front edge and the rear edge.

[0021] This concrete floor construction method reduces or eliminates the need to measure the height of the concrete surface, allowing for rapid construction of the concrete floor. The concrete surface leveling device has a leveling frame and a vibrator, and can vibrate the concrete to remove air bubbles and homogenize it while leveling the surface of the concrete being constructed. The leveling frame has parallel front and rear edges, allowing the surface to be leveled twice with a single pass, reducing the number of uneven areas remaining after the concrete surface leveling device has passed through, achieving efficient construction.

[0022] Also, for example, in the step of leveling the ready-mixed concrete, a portion of the ready-mixed concrete downstream of the movement direction of the leveling frame may be poured into the frame area.

[0023] With this construction method, even if a relatively large depression remains after the front edge has passed, by pouring some of the ready-mixed concrete from the downstream side into the area inside the frame where the depression is, the depression can be leveled out and eliminated after the rear edge has passed. [Brief explanation of the drawings]

[0024] [Figure 1] FIG. 1 is a plan view of a concrete surface leveling device according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a front view of the concrete surface leveling device shown in FIG. [Figure 3]3(a) is a side view of the concrete surface leveling device shown in FIG. 1, and FIG. 3(b) is a cross-sectional view of the front edge of the concrete surface leveling device shown in FIG. 1 taken along a plane perpendicular to the first direction. [Figure 4] FIG. 4 is a conceptual diagram showing the first stage of the concrete floor construction method according to the present invention. [Figure 5] FIG. 5 is a conceptual diagram showing the second stage of the concrete floor construction method according to the present invention. [Figure 6] FIG. 6 is a conceptual diagram showing the third stage of the concrete floor construction method according to the present invention. [Figure 7] FIG. 7 is a conceptual diagram showing the fourth stage of the concrete floor construction method according to the present invention. [Figure 8] FIG. 8 is a conceptual diagram showing the fifth step of the concrete floor construction method according to the present invention. [Figure 9] FIG. 9 is a conceptual diagram showing the sixth step of the concrete floor construction method according to the present invention. [Figure 10] FIG. 10 is a plan view of a concrete surface leveling device according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] Fig. 1 is a plan view of a concrete surface leveling device 10 according to a first embodiment of the present invention. Fig. 1 shows approximately half of the concrete surface leveling device 10, but the half not shown is approximately symmetrical to the part shown.

[0026] As shown in Figure 1, the concrete surface leveling device 10 has a leveling frame body 20 and a vibrator 40 attached to the leveling frame body 20. The leveling frame body 20 has a front edge portion 22 extending in a first direction D1, which is the longitudinal direction, a rear edge portion 26 extending in the first direction D1 substantially parallel to the front edge portion 22, and a plurality of connecting edges 30 connecting the front edge portion 22 and the rear edge portion 26. The length of the leveling frame body 20 along the first direction D1 can be, for example, approximately 1000 to 10000 mm, but is not particularly limited to this.

[0027] The multiple connection sides 30 include a first connection side 32, a second connection side 34 (see FIG. 4), and an intermediate connection side 36. These first connection side 32, second connection side 34, and intermediate connection side 36 extend in a second direction D2 that is perpendicular to the first direction D1, and are arranged at intervals from one another in the first direction D1. However, some of the connection sides 30 may be arranged in contact with or adjacent to one another, such as the two intermediate connection side parts 36 arranged in the center of the first direction D1.

[0028] Figure 4 is a conceptual diagram showing the first stage of a concrete floor construction method using the concrete surface leveling apparatus 10 shown in Figure 1. Figure 4 shows an overall view of the concrete surface leveling apparatus 10. Note that the concrete surface leveling apparatus 10 shown in Figure 4 is shown with some of its structure simplified, and the number and spacing of the intermediate connection sides 36 are different from those of the concrete surface leveling apparatus 10 shown in Figure 1. The number and spacing of the intermediate connection sides 36 in the concrete surface leveling apparatus 10 are not particularly limited and can be determined as appropriate.

[0029] 4, the first connecting edge 32 of the connecting edge 30 connects one end 22a of the front edge 22 to one end 26a of the rear edge 26, and the second connecting edge 34 of the connecting edge 30 connects the other end 22b of the front edge 22 to the other end 26b of the rear edge 26. In addition, the intermediate connecting edge 36 of the connecting edge 30 connects the front edge 22 to the rear edge 26 between one end 22a, 26a of the front edge 22 and the rear edge 26 and the other end 22b, 26b of the front edge 22 and the rear edge 26.

[0030] 1 and 4, the leveling frame body 20 has an in-frame area 38 that is generally rectangular in plan view and is surrounded in the horizontal direction by the front edge portion 22, the rear edge portion 26, and a pair of connecting edge portions 30. As shown in Fig. 1, four in-frame areas 38 are formed in one half of the leveling frame body 20, for a total of eight in-frame areas 38. The in-frame areas 38 are perforated vertically and are unobstructed from above and below.

[0031] By forming the intra-frame area 38 in the leveling frame body 20, it is possible to effectively prevent the ready-mixed concrete 70 from spilling out of the intra-frame area 38 into any area other than the part of the construction area 66 directly below the intra-frame area 38 during the construction stages shown in Figures 6 to 8. Furthermore, by having three or more connecting sides 30 and two or more intra-frame areas 38, it is possible to increase the rigidity of the leveling frame body 20. However, the number of intra-frame areas 38 formed in the leveling frame body 20 is not particularly limited, and for example, a leveling frame body having one intra-frame area and two connecting sides is also possible.

[0032] Figure 3(a) is a left side view of the leveling frame 20 shown in Figure 1. As shown in Figure 3, the bottom surface 23 of the front edge portion 22 and the bottom surface 27 of the rear edge portion 26 are located on the same plane. This allows the leveling frame 20 to be stably pressed against the construction frame 62 (see Figure 4), and by passing the leveling frame 20 once, the front edge portion 22 and the rear edge portion 26 can level the concrete surface twice to the same height.

[0033] As shown in FIG. 3, the bottom surface 33 of the first connection edge portion 32 is located on the same plane as the bottom surfaces 23, 27 of the front edge portion 22 and the rear edge portion 26. Although not shown in FIG. 3, the bottom surface of the second connection edge portion 34 is located on the same plane as the bottom surfaces 23, 27 of the front edge portion 22 and the rear edge portion 26, as is the bottom surface 33 of the first connection edge portion 32. This leveling frame 20 is preferable because the width of the leveling frame 20 can be determined to match the width of the construction area 66, regardless of whether the frame portion of the construction frame 62 is wide or narrow, as shown in FIG. 4. In addition, by aligning the heights of the bottom surfaces 33 of the first connection edge portion 32 and the second connection edge portion and the bottom surfaces 23, 27 of the front edge portion 22 and the rear edge portion 26, stability is improved when the leveling frame 20 is pressed against the construction frame 62.

[0034] Although not shown in Figures 1 to 3, it is preferable that the bottom surface of the intermediate connecting edge portion 36 shown in Figure 1, like the bottom surface 33 of the first connecting edge portion 32, be located on the same plane as the bottom surfaces 23, 27 of the front edge portion 22 and the rear edge portion 26, from the perspective of making the concrete surface beautiful and even.

[0035] 3(b) is a cross-sectional view of the front edge portion 22 of the concrete surface leveling device 10 shown in FIG. 1, taken along a plane perpendicular to the first direction D1. As shown in FIGS. 1 and 3(b), the front edge portion 22 has a rectangular cylindrical shape extending in the first direction D1. Furthermore, the width W2 in the second direction of the cross-sectional shape of the front edge portion 22 taken along a plane perpendicular to the first direction D1 is narrower than the width W3 in the height direction. The rear edge portion 26 also has a rectangular cylindrical shape extending in the first direction D1, like the front edge portion 22, and the cross-sectional shape of the rear edge portion 26 taken along a plane perpendicular to the first direction D1 is also the same as the cross-sectional shape of the front edge portion 22 shown in FIG. 3(b).

[0036] As shown in Figure 3(b), by making the front edge portion 22 and the rear edge portion 26 rectangular tubular in cross section, with the width W3 in the height direction being wider than the width W2 in the second direction, it is possible to prevent the weight of the leveling frame from becoming excessive and to prevent the fresh concrete from climbing over the front edge portion 22 and the rear edge portion 26. The height direction D3 is perpendicular to the first direction D1 and the second direction D2, and is also perpendicular to the surface of the concrete being constructed.

[0037] The material of the leveling frame 20 is not particularly limited, but iron, aluminum, or an alloy containing these is preferable from the viewpoint of giving the leveling frame 20 the weight and rigidity to be able to apply appropriate pressure to the surface of the fresh concrete. Also, for example, the leveling frame 20 can be manufactured by configuring the front edge portion 22, rear edge portion 26, and connecting edge portion 30 from elongated rectangular pipes or the like that are roughly rectangular tubular, and fixing these front edge portions 22, rear edge portions 26, and connecting edge portion 30 to each other by screwing, welding, or the like.

[0038] Fig. 2 is a front view of the concrete surface leveling device 10 shown in Fig. 1 as seen from the front (the side of the front edge 22). As shown in Figs. 1 and 2, the vibration part of the first vibrator 42 of the vibrator 40 is attached to the front side surface 24 of the front edge 22 along the first direction D1. Furthermore, as shown in Fig. 4, the vibration part of the second vibrator 44 of the vibrator 40, like the first vibrator 42, is also attached to the front side surface 24 of the front edge 22 along the first direction D1.

[0039] 1, 2, and 4, the vibration portion of the first vibrator 42 is attached to the front side surface 24 of the front edge portion 22 along the first direction D1 from the center 24a in the first direction D1 toward one end 22a of the front edge portion 22. On the other hand, as shown in Fig. 4, the vibration portion of the second vibrator 44 is attached to the front side surface 24 of the front edge portion 22 along the first direction D1 from the center 24a in the first direction D1 toward the other end 22b of the front edge portion 22.

[0040] By attaching the vibrator 40 to the front side surface 24, the vibrations from the vibrator 40 can be transmitted throughout the entire leveling frame 20, and even if the vibrator 40 falls off the leveling frame 20, it can be prevented from falling onto the leveled concrete surface. Furthermore, by attaching the vibrator 40 to the front side surface 24, strong vibrations are first transmitted from the front edge 22, which is closest to the vibrator, to a predetermined location of the ready-mixed concrete to promote degassing and homogenization, and then the rear edge 22 passes through the same location, thereby more effectively leveling the concrete surface. Furthermore, by symmetrically arranging the first vibrator 42 and the second vibrator 44 on the front side surface 24 of the front edge 22, the vibrations from the vibrator 40 can be transmitted approximately evenly throughout the entire leveling frame 20 in the first direction D1, even if the overall length of the leveling frame 20 is long.

[0041] 4, the vibrator 40 may be one in which a rod-shaped vibration part fixed to the leveling frame 20 is connected to a motor part (not shown) via a flexible connection part. However, the vibrator 40 may be one in which the vibration part and its drive part are separate bodies, or one in which the vibration part and its drive part are integrated.

[0042] In the first stage of the method for constructing a concrete floor using the concrete surface leveling device 10, a construction frame 62 is formed to surround a construction area 66, as shown in Figure 4, and the concrete surface leveling device 10 is prepared. In the example shown in Figure 4, the construction frame 62 is made up of the concrete floor surface that has already been constructed, but it may also be made up of wood, resin, metal, or other materials. As shown in Figure 4, reinforcing materials such as welded wire mesh are provided in the construction area 66 as needed.

[0043] As shown in Figure 4, the concrete surface leveling device 10 used in construction of a concrete floor is prepared so that its length in the first direction D1 (see Figure 1) is longer than one side of the construction area 66. In particular, it is preferable to prepare a concrete surface leveling device 10 whose length in the first direction D1 (see Figure 1) is slightly longer than one side of the construction area 66, as this makes it easier to work while holding down both ends of the concrete surface leveling device 10 (see Figures 6 to 8).

[0044] Figure 5 is a conceptual diagram showing the second stage of the concrete floor construction method. As shown in Figures 4 and 5, in the second stage of the concrete floor construction method, ready-mixed concrete is poured into the construction area 66 (so-called pouring of concrete). Next, as shown in Figure 5, it is also preferable to insert a vibrator 72 into the ready-mixed concrete poured into the construction area 66 to remove large air bubbles from the ready-mixed concrete and homogenize the cement and aggregate, which is part of the so-called compaction process.

[0045] 6 is a conceptual diagram showing the third stage of the concrete floor construction method. As shown in FIGS. 5 and 6, in the third stage of the concrete floor construction method, the concrete surface leveling device 10 is set so as to cross the construction area 66.

[0046] 7 and 8 are conceptual diagrams showing the fourth and fifth stages of the concrete floor construction method. As shown in FIGS. 6 to 8, in the fourth and fifth stages of the concrete floor construction method, the leveling frame 20 is vibrated by a vibrator 40 provided on the concrete surface leveling device 10 while the leveling frame 20 is moved in the second direction D2 (see FIG. 1). At this time, as shown in FIGS. 6 to 8, one side 20a of the leveling frame 20 in the first direction D1 is pressed against one upper surface 62a of the construction frame 62 that sandwiches the construction area 66, and the other side 20b of the leveling frame 20 in the first direction D1 is pressed against the other upper surface 62b of the construction frame 62 that sandwiches the construction area 66 while the leveling frame 20 is moved.

[0047] The concrete surface leveling device 10 is moved in the second direction D2 while pressing the underside of the leveling frame 20 against the upper surfaces 62a, 62b of the construction frame 62, thereby carrying out the process of leveling the ready-mixed concrete 70 poured into the construction area 66 with the front edge 22 and rear edge 26 of the leveling frame 20. As shown in Figures 6 to 8, in the process of leveling the ready-mixed concrete 70 with the concrete surface leveling device 10, it is preferable that the leveling frame 20 be moved by two or more workers, including a worker holding one side 20a of the leveling frame 20 and a worker holding the other side 20b of the leveling frame 20.

[0048] In the process of leveling the ready-mixed concrete 70, the work of moving the leveling frame body 20 while pressing its underside against the upper surfaces 62a, 62b of the construction frame 62 can be done with a relatively small force because the leveling frame body 20 is vibrated by the vibrator 40, which reduces frictional resistance with the construction frame 62. In addition, because the leveling frame body 20 is vibrated by the vibrator 40, the vibrations are transmitted to the ready-mixed concrete 70 poured into the construction area 66, making it possible to carry out the so-called compaction process in the process of leveling the ready-mixed concrete 70.

[0049] 7, the ready-mixed concrete 70 in the construction area 66 is leveled twice by the bottom surface 23 of the front edge portion 22 and the bottom surface 27 of the rear edge portion 26 when the leveling frame 20 passes over the top surface of the ready-mixed concrete 70. The bottom surface 23 of the front edge portion 22 and the bottom surface 27 of the rear edge portion 26 are pressed against the top surfaces 62a, 62b of the construction frame, so that their heights are kept constant. Therefore, a surface that is leveled to a constant height is formed on the top surface of the ready-mixed concrete 70 after the leveling frame 20 has passed.

[0050] Furthermore, as shown in FIG. 7, during the process of leveling the ready-mixed concrete 70, a portion of the ready-mixed concrete 70 in the construction area 66, where the surface is not level, downstream of the movement direction D4 of the leveling frame 20, may be scooped with a shovel 74 and poured into the frame area 38 from above the leveling frame 20. That is, if an operator monitors the surface of the ready-mixed concrete 70 before and after the front edge 22 of the leveling frame 20 passes and finds an area where the surface is not flat even after the front edge 22 passes, the operator can add ready-mixed concrete 70 from above to the frame area 38 in question, thereby leveling the surface when the rear edge 26 passes, thereby forming an overall surface with a uniform height after the leveling frame 20 passes. It is preferable to set the width of the frame area 38 in the first direction D1 to approximately 400 to 1000 mm from the viewpoint of efficiently supplying the ready-mixed concrete 70 added from above to the frame area 38 at the desired location.

[0051] In this way, in the process of leveling the ready-mixed concrete 70, the ready-mixed concrete 70 is vibrated to remove air bubbles and the like, and the surface of the ready-mixed concrete 70 can be leveled twice by the front edge 22 and rear edge 26 during one pass of the leveling frame 20, making it possible to efficiently form a surface that is leveled to a constant height. As shown in Figure 8, a process of finishing the surface using a register 76 or the like may be carried out for the construction area 66 whose surface has been leveled by the passage of the leveling frame 20.

[0052] Fig. 9 is a conceptual diagram showing the sixth step of the concrete floor construction method. As shown in Figs. 6 to 8, after the surface of the ready-mixed concrete 70 in the entire construction area 66 has been leveled by the leveling frame 20, the concrete surface leveling device 10 is carried by an operator to the next construction area, as shown in Fig. 9.

[0053] As described above, the concrete surface leveling device 10 can efficiently level the surface of the ready-mixed concrete 70 to a constant height without having to frequently measure the height of the concrete surface during construction. The concrete surface leveling device 10 can also level the surface of the concrete being constructed (ready-mixed concrete 70) by vibrating the ready-mixed concrete 70 to remove air bubbles and homogenize the concrete. The concrete surface leveling device 10 is also lighter and easier to handle than rotary roller-type leveling devices, and the construction process is simpler.

[0054] The concrete surface leveling device 10 according to the present invention and the concrete floor construction method using the same have been described above using embodiments, but it goes without saying that the present invention is not limited to these embodiments and includes many other embodiments and modifications. For example, the concrete surface leveling device 10 has two vibrators, the first vibrator 42 and the second vibrator 44, and is symmetrical with respect to the second direction D2, but the concrete surface leveling device may also be asymmetrical.

[0055] 10 is a plan view of a concrete surface leveling apparatus 110 according to the second embodiment. In the concrete surface leveling apparatus 110, only one first vibrator 142 is provided in the leveling frame 120 of the concrete surface leveling apparatus 110.

[0056] In the leveling frame body 120, the front edge portion 122 and the rear edge portion 126 are connected by the first connecting edge portion 32, the second connecting edge portion 34, and one intermediate connecting edge portion 36, and the leveling frame body 120 has two in-frame areas 38. The number of intermediate connecting edge portions 36, in-frame areas 38, and vibrators of the concrete surface leveling device 110 can be changed as appropriate depending on the overall length of the leveling frame body 120 along the first direction D1, etc.

[0057] The concrete surface leveling device 110 according to the second embodiment shown in Figure 10 also has the same effects as the concrete surface leveling device 10 according to the first embodiment described using Figures 1 to 9 in terms of the commonalities with the concrete surface leveling device 10. [Explanation of symbols]

[0058] 10...Concrete surface leveling device 20...Leveling frame 20a...One side 20b...other side 22...front part 22a...One end 22b...other end 23, 27, 33...Bottom 24...front side 24a…Central part W1: Width in the second direction W2: Height 26... Posterior part 26a...One end 26b...other end 30...Connection edge 32...First connecting edge 34...Second connecting edge 36...Intermediate connecting edge 38...Framed area 40...Vibrator 42...First vibrator 44...Second vibrator D1…first direction D2…Second direction D3: Height direction D4...Movement direction 62...Construction frame 62a...One upper surface 62b...other upper surface 66…Construction area 70...Ready-mix concrete 72...Vibrator (different from the leveling device) 74...Shovel 76...Dragonfly

Claims

1. a leveling frame body having a front edge portion extending in a first direction, a rear edge portion extending in the first direction substantially parallel to the front edge portion, and a plurality of connecting edges extending in a second direction perpendicular to the first direction, connecting the front edge portion and the rear edge portion and arranged at intervals in the first direction, wherein the front edge portion, the rear edge portion, and the connecting edges form a substantially rectangular frame area in a plan view that is surrounded in the horizontal direction and penetrates in the vertical direction, and the bottom surfaces of the front edge portion and the rear edge portion are located on the same plane; A concrete surface leveling device having a vibrator attached to the leveling frame.

2. The concrete surface leveling device of claim 1, wherein the plurality of connecting edges include a first connecting edge connecting one end of the front edge and one end of the rear edge, and a second connecting edge connecting the other end of the front edge and the other end of the rear edge.

3. The concrete surface leveling device according to claim 2 , wherein bottom surfaces of the first connecting edge portion and the second connecting edge portion are located on the same plane as bottom surfaces of the front edge portion and the rear edge portion.

4. A concrete surface leveling device as described in claim 1, wherein the connecting edge portion includes an intermediate connecting edge portion connecting the front edge portion and the rear edge portion between one end of the front edge portion and the rear edge portion and the other end of the front edge portion and the rear edge portion.

5. having three or more connecting sides, 2. The concrete surface leveling device according to claim 1, wherein the device has two or more framed areas.

6. the front side portion and the rear side portion have a rectangular tubular shape extending in the first direction, The concrete surface leveling device according to claim 1 , wherein the width in the second direction of a cross-sectional shape of the front edge portion and the rear edge portion taken along a plane perpendicular to the first direction is narrower than the width in the height direction of the cross-sectional shape.

7. The concrete surface leveling device according to claim 1 , wherein the vibrator is attached to the front side surface of the front edge portion along the first direction.

8. The concrete surface leveling device described in claim 1, wherein the vibrator comprises a first vibrator attached to the front side surface of the front edge portion along the first direction from the center in the first direction toward one end of the front edge portion, and a second vibrator attached to the front side surface of the front edge portion along the first direction from the center toward the other end of the front edge portion.

9. A step of preparing a concrete surface leveling device according to any one of claims 1 to 8; forming a construction frame surrounding a construction area; A step of pouring ready-mixed concrete into the construction area; positioning the concrete surface leveling device across the construction area; a step of vibrating the leveling frame body with the vibrator, pressing one side of the leveling frame body in the first direction against an upper surface of one of the construction frames that sandwich the construction area, and moving the leveling frame body in the second direction while pressing the other side of the leveling frame body in the first direction against an upper surface of the other of the construction frames that sandwich the construction area, thereby leveling the ready-mixed concrete poured into the construction area with the front edge and the rear edge.

10. 10. A concrete floor construction method according to claim 9, wherein in the step of leveling the ready-mixed concrete, a portion of the ready-mixed concrete downstream of the direction of movement of the leveling frame is poured into the area within the frame.

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