JP7569062B2 - Leveling material application method and leveling material mixing tank - Google Patents

Description

Article 30, paragraph 2 of the Patent Act applies. Published on the website (http://mito-k.net/) on June 4, 2020.

The present invention relates to a method for applying a leveling material, which forms a flat surface without unevenness on the upper side of a base by pouring the leveling material onto the upper surface of the base and hardening it, and a leveling material mixing tank that can be suitably used for this method.

The foundations of buildings are constructed by assembling rebar, enclosing it in a formwork, and pouring concrete into the formwork. However, concrete has low fluidity (high viscosity), and the top surface of the concrete does not necessarily become level when poured into the formwork, so unevenness is likely to form on the top surface of the concrete after it hardens. For this reason, a leveling material that has a higher fluidity than the concrete is poured onto the top surface of the poured concrete and allowed to harden (see, for example, Patent Document 1). This makes it possible to make the top surface of the leveling material (the top surface of the building's foundation) flat and smooth, even if the top surface of the concrete is uneven.

JP 2011-207667 A

However, in conventional construction methods, the raw materials for the leveling material are put into a bucket and mixed with a mixer, then the bucket is carried to the destination and the leveling material is poured into the destination by tilting the bucket (see, for example, Figs. 6 and 7 of Patent Document 1). This requires a lot of effort to move the leveling material from the place where it is mixed to the place where it is to be applied. In addition, since work sites often have poor footing due to rebar, wood, etc. lying around, there are many cases where people trip when carrying the leveling material in a bucket and spill the leveling material. In addition, when pouring the leveling material into a formwork, it is necessary to adjust the tilt angle and position of the heavy bucket while working to prevent the leveling material from flying out of the formwork, which makes it difficult to work.

The present invention has been made to solve the above problems, and provides a method for applying a leveling material that allows the leveling material to be easily poured into the desired location without the need for manual transportation, thereby improving workability. Another object of the present invention is to provide a leveling material mixing tank that can be suitably used in this method for applying a leveling material.

The above issues are:
A method for applying a leveling material to a substrate by pouring the leveling material onto the substrate and allowing it to harden, thereby forming a flat surface without unevenness on the substrate.
When pouring leveling material onto the top surface of the base,
The leveling material mixing tank for mixing the leveling material is suspended in midair.
By connecting the leveling material extraction pipe connected to the bottom of the leveling material mixing tank to the desired location,
This problem is solved by providing a method for applying a leveling material, characterized in that the leveling material inside the leveling material mixing tank is allowed to flow naturally (by gravity) down to the target location.

This eliminates the need to transport the mixed leveling material in a bucket or similar, reducing the work and physical strain on workers. In addition, the leveling material inside the leveling material mixing tank reaches the desired location by flowing down the leveling material extraction pipe line according to gravity, so no power equipment such as a pump is required to pour the leveling material. Furthermore, when pouring the leveling material into the formwork, the location where the leveling material is poured can be adjusted simply by operating the tip of the leveling material extraction pipe line (the end not connected to the leveling material mixing tank; the same applies below). This also improves workability.

In the leveling material application method of the present invention, when the leveling material is poured into the target location, the base end of the leveling material extraction pipe (the end connected to the leveling material mixing tank; the same applies below) should be higher than the tip, and the middle part of the leveling material extraction pipe may have a horizontal part or an upwardly sloping part. However, if there is a horizontal part or an upwardly sloping part in the middle part of the leveling material extraction flow path, the solid components contained in the leveling material are likely to settle and remain in that place. For this reason, it is preferable that the leveling material extraction pipe has a monotonous downward slope from the base end connected to the leveling material mixing tank to the tip where the leveling material is discharged.

In addition, the above problem is
A leveling material mixing tank for mixing a leveling material that is poured onto the upper surface of a base and hardened to form a flat surface without unevenness on the upper surface of the base,
A hanging part for hanging with a crane,
The above-mentioned problems can also be solved by providing a leveling material mixing tank comprising a leveling material removal section for removing the leveling material from the bottom of the leveling material mixing tank.
This leveling material mixing tank can be suitably used as the "leveling material mixing tank" in the above-mentioned leveling material application method of the present invention.

In the leveling material mixing tank of the present invention, it is preferable to form the bottom into a tapered shape and form the leveling material removal section in the center of the bottom. This makes it easier for the leveling material inside the leveling material mixing tank to flow out smoothly from the leveling material removal section. It also makes it easier to remove almost the entire amount of leveling material inside the leveling material mixing tank, making it possible to use the leveling material without waste.

In the leveling material mixing tank of the present invention, when the bottom is tapered, it is preferable to provide legs to prevent the leveling material mixing tank from falling over when placed on the ground. When the raw material for the leveling material is added to the leveling material mixing tank or when the leveling material is washed after use, the leveling material mixing tank is usually lowered to the ground. However, if the bottom of the leveling material mixing tank is tapered, it is difficult to make the leveling material mixing tank stand on its own. In this regard, providing legs makes it possible to make the leveling material mixing tank stand on its own on the ground.

The leveling material mixing tank of the present invention is preferably equipped with an agitator for agitating the leveling material inside. Although the solid components of the leveling material will settle after a while even if it is stirred, by providing an agitator in the leveling material mixing tank itself, it becomes possible to pour the leveling material into the desired location while stirring it. This makes it possible to apply a high-quality leveling material.

As described above, the present invention makes it possible to provide a leveling material application method that allows the leveling material to be easily poured into the desired location without the need for manual transportation, thereby improving workability. It also makes it possible to provide a leveling material mixing tank that can be suitably used in this leveling material application method.

FIG. 2 is a diagram showing an example of a method for applying the leveling material of the present invention. FIG. 1 is a perspective view showing an example of a leveling material mixing tank of the present invention. FIG. 2 is a diagram showing an example of the leveling material agitating tank of the present invention, and is a side view showing the state of the leveling material agitating tank as viewed from the side. FIG. 2 is a diagram showing an example of a leveling material agitating tank of the present invention, and is a cross-sectional view showing a state in which the leveling material agitating tank is cut along a vertical plane when the leveling material is being agitated.

The preferred embodiment of the leveling material application method and the leveling material mixing tank used therein of the present invention will be described in more detail with reference to the drawings. The contents described below are merely preferred embodiments, and the technical scope of the present invention is not limited to the embodiments described below. The leveling material application method and the leveling material mixing tank of the present invention can be modified as appropriate within the scope of the invention.

1. Method of applying the leveling material First, the method of applying the leveling material according to the present invention will be described. Fig. 1 is a diagram showing an example of the method of applying the leveling material according to the present invention. This diagram shows the construction of the foundation of a building. Specifically, the diagram shows the construction of a foundation of a building after assembling reinforcing bars 1 on the ground G and surrounding it with a formwork 2, pouring concrete 3 (base) into the formwork 2, and then pouring the leveling material 4 onto the upper surface 3a of the concrete 3.

Because concrete 3 has low fluidity (high viscosity) even before hardening (fresh concrete state), the top surface 3a of the concrete 3 poured into the formwork 2 is unlikely to become a horizontally flat surface, and unevenness is likely to form on the top surface 3a of the concrete 3. In this regard, by pouring a leveling material 4 that is less viscous (higher fluidity) than the concrete 3 above the top surface 3a (uneven surface) of the concrete 3 and allowing it to harden, it is possible to obtain a flat, uneven top surface 4a. The leveling material 4 may be poured immediately after the concrete 3 is poured into the formwork 2, but it is preferable to pour it after following the procedure below.

That is, after pouring concrete 3 into the formwork 2, it is preferable to make the top surface 3a of the concrete 3 as flat as possible with a trowel or the like before the concrete 3 hardens. It is also preferable to level the surface in advance using a top nail or a magnet. Furthermore, it is also preferable to roughen the top surface 3a of the poured concrete 3 with a brush or the like and remove dirt, oil, etc. from the top surface 3a immediately after the water has drained from the top surface 3a of the poured concrete 3. At this time, if the top surface 3a of the concrete 3 is too dry, it is recommended to apply a primer treatment. By pouring the leveling material 4 after following the above steps, not only can a flatter top surface 4a be obtained, but the hardened leveling material 4 can be more firmly integrated with the concrete 3. When the concrete 3 and leveling material 4 are completely hardened, the formwork 2 is removed and the foundation of the building is completed.

As already mentioned, in the conventional construction method, the leveling material 4 was poured using a bucket. However, this work required the worker to carry a heavy bucket, which not only placed a large physical burden on the worker, but also required a lot of time. In addition, the workability was poor. In contrast, the construction method of the present invention solves the above problems by supplying the leveling material 4 to the target location from a leveling material mixing tank 10 suspended by a crane 5 or the like, as shown in Figure 1. Note that, although a crawler-type self-propelled crane is depicted as the crane 5 in Figure 1, the crane 5 is not limited to this. For example, a crane mounted on the chassis of a truck vehicle (a so-called Unic crane) or the like may be used.

The leveling material mixing tank 10 is for mixing the raw materials of the leveling material 4. The raw materials of the leveling material 4 vary depending on the type, but when the leveling material 4 is applied to the top surface of the foundation of a building, as in the application method of this embodiment, a hydraulic composition (cement-based leveling material) in which gypsum or the like is added to cement is often used. The raw materials of the leveling material 4 are charged into the leveling material mixing tank 10 (at this time, the leveling material mixing tank 10 is usually lowered to the ground G), and a predetermined amount of water is added and the raw materials are mixed. When the raw materials are sufficiently mixed and the leveling material 4 becomes a slurry, the leveling material 4 can be applied. When the leveling material 4 is applied, the leveling material mixing tank 10 is suspended in mid-air by a crane 5 or the like, as described above.

The base end 6a (upper end) of the leveling material extraction pipe 6 is connected to the bottom of the suspended leveling material mixing tank 10. The leveling material extraction pipe 6 is usually made of a flexible tubular member such as a resin tube or rubber hose. This leveling material extraction pipe 6 is used to extract the leveling material 4 from inside the leveling material mixing tank 10, and its tip end 6b (lower end) is held by the worker 7 near the target location (top surface 3a of concrete 3) where the leveling material 4 is to be poured.

When applying the leveling material 4, the leveling material mixing tank 10 is lifted up to a position where the base end 6a (bottom of the leveling material mixing tank 10) of the leveling material extraction pipe 6 is higher than the tip 6b. As a result, the leveling material 4 stored inside the leveling material mixing tank 10 flows naturally down the inside of the leveling material extraction pipe 6 by gravity and flows out from the tip 6b of the leveling material extraction pipe 6. If a power device such as a pump is used to transport the slurry-like leveling material 4 containing solid components, the pump may become clogged, and other problems may easily occur in the device (power device). However, by allowing the leveling material 4 to flow naturally down by gravity as described above, it is possible to transport the leveling material 4 to the destination without using a power device such as a pump.

When applying the leveling material 4, it is important to set the height _H1 from the tip 6b to the base 6a of the leveling material outlet pipe 6 to a certain extent. This is because if the height _H1 is set too small, the leveling material 4 will not easily flow out from the tip 6b of the leveling material outlet pipe 6 (the discharge flow rate of the leveling material 4 will be reduced). For this reason, the height _H1 is preferably set to 50 cm or more. The height _H1 is more preferably set to 100 cm or more, and even more preferably set to 150 cm or more.

On the other hand, if the height _H1 from the tip 6b to the base 6a of the leveling material extraction pipe 6 is too large when applying the leveling material 4, the leveling material 4 will come out too forcefully from the tip 6b of the leveling material extraction pipe 6 (the discharge flow rate of the leveling material 4 will become too large), and the leveling material 4 will easily scatter around the target location. In addition, a small crane 5 will not be sufficient, and it will be necessary to prepare a large one. For this reason, the height _H1 is preferably 5 m or less. The height _H1 is more preferably 4 m or less, and even more preferably 3 m or less.

When applying the leveling material 4, the middle part of the leveling material extraction pipe 6 (the section between the base end 6a and the tip end 6b) may have horizontal parts or parts that slope upward relative to the flow direction of the leveling material 4. However, if the middle part of the leveling material extraction pipe 6 has horizontal parts or parts that slope upward, the solid components (cement, lime powder, etc.) contained in the leveling material 4 may settle and remain in that place, making the leveling material extraction pipe 6 more likely to become clogged. For this reason, it is preferable that the leveling material extraction pipe 6 has as monotonous a downward slope as possible from the base end 6a to the tip end 6b, as shown in FIG. 1.

If the leveling material extraction pipe 6 has excess length, resulting in horizontal sections or sections with an upward slope, the position of the leveling material mixing tank 10 can be raised or moved away from the target location (the location where the leveling material 4 is applied) to reduce the excess section of the leveling material extraction pipe 6 and make the leveling material extraction pipe 6 have a monotonous downward slope.

As described above, when the construction method of this embodiment is adopted, there is no need to transport the leveling material 4 in a bucket or the like. This reduces the labor and physical burden on the worker. In addition, no power equipment such as a pump is required to pour (transport) the leveling material 4. Furthermore, the worker 7 can adjust the location where the leveling material is poured by simply changing the position of the tip 6b of the leveling material extraction pipe 6 that he or she is holding. This also improves workability.

The workability of applying the leveling material 4 can be further improved by providing a plug at the tip 6b of the leveling material outlet pipe 6. This is because the supply and stop of the leveling material 4 can be controlled by the operator 7 at his/her fingertips. If a flow control valve is used as the plug, the discharge flow rate of the leveling material 4 can also be controlled by the operator 7 at his/her fingertips.

2. Leveling material mixing tank Next, the leveling material mixing tank 10 will be described in more detail. Figures 2 to 4 are diagrams showing an example of the leveling material mixing tank 10. Figure 2 shows the leveling material mixing tank 10 viewed from diagonally above (perspective view of the leveling material mixing tank 10), Figure 3 shows the leveling material mixing tank 10 viewed from the side (side view of the leveling material mixing tank 10), and Figure 4 shows the leveling material mixing tank 10 cut by a vertical plane when mixing the leveling material 4 (cross-sectional view of the leveling material mixing tank 10). As shown in Figure 2, the leveling material mixing tank 10 of this embodiment includes a mixing tank body 11, a lid body 12, legs 13, and a hanging part 14.

2.1 Agitation tank body As shown in Fig. 4, the agitation tank body 11 is a part for agitating the leveling material 4 therein (see arrow _A1 in the figure). A leveling material removal section 11a for removing the leveling material 4 from inside the agitation tank body 11 is provided at the bottom of the agitation tank body 11. The base end 6a (upper end) of the leveling material removal pipe 6 described above is connected to this leveling material removal section 11a. A spare leveling material removal section 11b is also provided near the bottom of the agitation tank body 11. The leveling material removal sections 11a and 11b are usually provided with opening and closing valves (not shown).

The shape of the agitation tank body 11 may be a square cylinder or other shape with corners. However, if the agitation tank body 11 has corners, the solid components of the leveling material 4 being agitated inside the agitation tank body 11 tend to remain near the corners of the agitation tank body 11, which may result in insufficient agitation of the leveling material 4. For this reason, it is preferable that the agitation tank body 11 has a shape with as few corners as possible, such as a cylindrical shape. In the leveling material agitation tank 10 of this embodiment, the agitation tank body 11 is cylindrical, as shown in FIG. 2.

In addition, in the leveling material mixing tank 10 of this embodiment, as shown in FIG. 4, the bottom 11d of the mixing tank body 11 is tapered (narrowing downward). The leveling material removal section 11a is provided at the center (the lowest point) of the tapered bottom 11d. Therefore, almost all of the leveling material 4 inside the mixing tank body 11 is collected at the center of the bottom 11d and can be smoothly removed from the leveling material removal section 22a without being left behind in the mixing tank body 11.

The inclination angle θ (Figure 4) of the bottom 11d of the agitation tank body 11 is not particularly limited. However, if the inclination angle θ is made too small (too close to 0°), the leveling material 4 in the agitation tank body 11 will not smoothly gather at the center of the bottom 11d of the agitation tank body 11 (the location where the leveling material removal section 11a is provided). For this reason, the inclination angle θ is preferably 5° or more, and more preferably 10° or more.

However, if the inclination angle θ is made too large (too close to 90°), the stirring blade 21 cannot be disposed close to the leveling material removal portion 11a unless the diameter of the stirring blade 21 is made small, and it may become difficult to efficiently stir the leveling material 4. For this reason, the inclination angle θ is preferably set to 45° or less, and more preferably to 30° or less. In the leveling material stirring tank 10 of this embodiment, the inclination angle θ is set to about 14 to 15°.

2.2 Lid The lid 12 is for covering the upper opening of the agitation tank body 11 to prevent dirt and the like from entering the inside of the agitation tank body 11. In the leveling material agitation tank 10 of this embodiment, as shown in Fig. 2, the lid 12 is composed of a pair of opening/closing plates 12a that cover approximately half of the upper opening of the agitation tank body 11. A hinge (not shown) is attached to the base end of each opening/closing plate 12a. Therefore, each opening/closing plate 12a can be opened and closed by rotating (see arrow _A2 in Fig. 2) relative to the agitation tank body 11.

2.3 Legs The legs 13 are provided to support the agitation tank body 11 so that the leveling material agitation tank 10 (when pouring the leveling material 4 into the target location, the leveling material agitation tank 10 is suspended in mid-air, but when pouring the raw material for the leveling material 4 into the agitation tank body 11, etc.) does not fall over when placed on the ground G (FIG. 1). In the leveling material agitation tank 10 of this embodiment, as shown in FIG. 2, four legs 13 are arranged in a balanced manner (rotationally symmetrical with respect to the center line of the agitation tank body 11) on the outer periphery of the agitation tank body 11.

2.4 Hanging Part The hanging part 14 is a part for hanging a wire or the like fixed to a hook or the like of the crane 5 (FIG. 1) when suspending the leveling material mixing tank 10. In the leveling material mixing tank 10 of this embodiment, as shown in FIG. 2, four hanging parts 14 are arranged in a balanced manner (rotationally symmetrical with respect to the center line of the mixing tank body 11) on the flange part 11c integrally formed on the upper end of the mixing tank body 11. Therefore, the leveling material mixing tank 10 can be suspended in a straight state.

2.5 Others (mixer)
In the conventional construction method, the raw materials and water of the leveling material 4 are put into a bucket, and a hand mixer (handheld mixing device) is put into the bucket to mix the raw materials and water. The bucket is then carried to a destination and its contents (the mixed leveling material 4) are transferred to the destination, so that the leveling material 4 is poured into the destination. That is, the leveling material 4 is poured into the destination after mixing is completed. Similarly, in the leveling material mixing tank 10 of the present invention, the leveling material 4 may be poured into the destination after mixing is completed (the raw materials and water of the leveling material 4 are put into the mixing tank main body 11 with the leveling material mixing tank 10 lowered to the ground G (FIG. 1), and then the leveling material mixing tank 10 is suspended in midair and the leveling material 4 inside the mixing tank main body 11 is supplied to the destination).

However, if the leveling material 4 is poured into the target location after mixing is finished, the leveling material 4 may separate into solid and liquid components inside the mixing tank body 11 while the leveling material 4 is being poured into the target location, and the solid components may settle near the bottom of the mixing tank body 11. This may cause the leveling material 4 taken out by the leveling material removal pipe 6 to become watery or, conversely, solid. This type of problem is more likely to occur the longer the time that has passed since mixing the leveling material 4. Therefore, when pouring the leveling material 4 into the target location after mixing is finished, it is necessary to complete the work in one go without interruption so that the work can be completed as quickly as possible.

In this regard, as shown in FIG. 4, the leveling material mixing tank 10 of this embodiment is equipped with an agitator 20 for mixing the leveling material 4 inside the mixing tank body 11. The agitator 20 is composed of an agitator blade 21 disposed inside the mixing tank body 11, a shaft 22 extending upward from the agitator blade 21, and a rotation drive device 23 (motor, etc.) connected to the upper end of the shaft 22. The rotational force generated by the rotation drive device 23 is transmitted to the agitator blade 21 via the shaft 22, causing the agitator blade 21 to rotate, thereby mixing the leveling material 4.

In this way, by providing the agitator 20 in the leveling material mixing tank 10 itself, it becomes possible to mix the leveling material 4 inside the mixing tank body 11 even when the leveling material 4 is being poured into the target location (when the leveling material mixing tank 10 is suspended in mid-air). Therefore, even if the operation of pouring the leveling material 4 is interrupted or takes a long time, it is possible to continue pouring sufficiently mixed homogeneous leveling material 4 into the target location.

The height of the stirring blade 21 in the stirring tank body 11 is important. This is because if the stirring blade 21 is placed at a high point inside the stirring tank body 11, not only will it be possible to stir only the upper layer of the leveling material 4 accumulated in the stirring tank body 11, but when the leveling material 4 is removed from the leveling material removal section 11a and the water level of the leveling material 4 drops, the stirring blade 21 will be above the water surface, making it impossible to stir the leveling material 4 itself. For this reason, it is preferable to place the stirring blade 21 near the bottom 11d of the stirring tank body 11 (where the leveling material removal section 11a is provided).

However, if the agitator blade 21 is brought too close to the bottom 11d of the agitator tank body 11, the tip of the agitator blade 21 may hit the bottom 11d (the agitator blade 21 hits the bottom 11d at part α in FIG. 4), which may damage the agitator blade 21. For this reason, it is preferable to ensure a clearance (vertical clearance; the same applies below) between the agitator blade 21 and the bottom 11d at part α of 10 mm or more, and more preferably 20 mm or more.

However, if the clearance between the agitator blade 21 and the bottom 11d in portion α is made too wide, a retention area in which the leveling material 4 is retained is likely to form in portion β (FIG. 4) between the bottom 11d and the side wall of the agitator tank body 11. For this reason, it is preferable to keep the clearance between the agitator blade 21 and the bottom 11d in portion α to 50 mm or less, and more preferably to 30 mm or less. In the leveling material agitator tank 10 of this embodiment, the clearance between the agitator blade 21 and the bottom 11d in portion α is set to approximately 25 mm.

The rotation speed of the stirring blade 21 is appropriately determined depending on the type of leveling material 4, etc. However, if the rotation speed of the stirring blade 21 is too slow, the leveling material 4 may not be sufficiently stirred. For this reason, the rotation speed of the stirring blade 21 is preferably 100 rpm or more, and more preferably 200 rpm or more.

However, if the rotation speed of the stirring blade 21 is made too fast, an area where the leveling material 4 is difficult to stir is likely to be formed inside the stirring tank body 11. In this case, the stirring of the leveling material 4 may be insufficient. In this respect, in the conventional construction method in which a bucket is placed on the ground and stirred with a hand mixer, air bubbles are formed in the leveling material 4 in the bucket, making it possible to visually identify the area where stirring is insufficient, and it is also possible to move the hand mixer to the area where stirring is insufficient, but in the leveling material stirring tank 10 of this embodiment in which the leveling material 4 is stirred while the leveling material stirring tank 10 is suspended in mid-air, it is difficult to stir while checking the state of the leveling material 4. For this reason, in the leveling material stirring tank 10 of this embodiment, it is preferable to make the rotation speed of the stirring blade 21 slower than the value of the conventional hand mixer (usually about 1200 rpm). Specifically, the rotation speed of the stirring blade 21 is preferably 1000 rpm or less, and more preferably 800 rpm or less. The rotation speed of the stirring blade 21 can be adjusted by a speed controller equipped with an inverter or the like.

The dimensions (outer diameter) of the stirring blade 21 are not particularly limited. However, if the outer diameter of the stirring blade 21 is too small, it may be difficult to sufficiently stir the leveling material 4 inside the stirring tank body 11. For this reason, the outer diameter of the stirring blade 21 (hereinafter referred to as "outer diameter D ₁ ") is preferably set within a range in which the ratio D 1 /D 2 of the outer diameter D ₁ to the inner diameter (hereinafter referred to as "inner diameter D ₂ ") of the stirring tank body 11 can be secured to be 0.2 or more, and more preferably set within a range in which the ratio D ₁ /D ₂ can be secured to be 0.3 or more.

However, if the outer diameter of the stirring blade 21 is too large, the tip of the stirring blade 21 is likely to hit the peripheral wall of the stirring tank body 11, etc., and the stirring blade 21 may be damaged. In addition, the stirring blade 21 receives a large rotation resistance from the leveling material 4, and it becomes necessary to use a rotation drive device 23 with a large capacity. For this reason, it is preferable to suppress the ratio D ₁ /D _{2 of the outer diameter D 1 of} the stirring blade 21 to the inner diameter D ₂ of the stirring tank body 11 to 0.8 or less, and more preferably to suppress it to 0.5 or less. In the leveling material stirring tank 10 of this embodiment, the outer diameter D ₁ of the stirring blade 21 is about 25 cm, the inner diameter D ₂ of the stirring tank body 11 is about 80 cm, and the ratio D ₁ /D ₂ is a little more than 0.3.

1. Steel bar 2. Formwork 3. Concrete (base)
3a Top surface of concrete (base) (uneven surface)
4 Leveling material 4a Upper surface (flat surface) of leveling material
5 Crane 6 Leveling material extraction pipe 6a Base end (upper end) of leveling material extraction pipe
6b Tip (lower end) of leveling material extraction pipe
[0033] 7: Worker 10: Leveling material mixing tank 11: Mixing tank body 11a: Leveling material removal section 11b: Spare leveling material removal section 11c: Flange section 11d: Bottom section of mixing tank body 12: Lid 12a: Opening and closing plate 13: Leg 14: Suspension section 15: Frame 20: Mixer 21: Mixing blade 22: Shaft 23: Rotation drive device G: Ground H: Height from tip to base of ₁ leveling material removal pipe

Claims (5)

A method for applying a leveling material to a substrate by pouring the leveling material onto the substrate and allowing it to harden, thereby forming a flat surface without unevenness on the substrate.
When pouring leveling material onto the top surface of the base,
The leveling material mixing tank for mixing the leveling material is suspended in midair.
By connecting the leveling material extraction pipe connected to the bottom of the leveling material mixing tank to the desired location,
The leveling material inside the leveling material mixing tank is allowed to flow naturally down to the target location,
A method for applying a leveling material , comprising rotating an agitating blade disposed inside a leveling material agitating tank at a rotation speed of 100 to 1000 rpm to agitate the leveling material .
2. A method for applying a leveling material according to claim 1, wherein the leveling material outlet pipe has a monotonous downward slope from a base end connected to the leveling material mixing tank to a tip end from which the leveling material is discharged.
A leveling material mixing tank for mixing a leveling material that is poured onto the upper surface of a base and hardened to form a flat surface without unevenness on the upper surface of the base,
A mixing vessel body,
A hanging part for hanging with a crane,
a leveling material removal section for removing the leveling material from the bottom of the leveling material mixing tank;
A mixer for mixing the leveling material;
Equipped with
The agitator,
A stirring blade disposed inside the stirring vessel body;
A rotary drive device that rotates the stirring blade at a rotation speed of 100 to 1000 rpm;
It was deemed to have
A leveling material mixing tank characterized by:
The bottom of the leveling material mixing tank is tapered,
4. The leveling material mixing tank according to claim 3, wherein the leveling material outlet is formed at the center of the bottom of the leveling material mixing tank.
The leveling material mixing tank according to claim 4, which is provided with legs to prevent the leveling material mixing tank from falling over when placed on the ground.

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