JPH0634478Y2 - Ironing device for painting concrete - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a concrete spraying machine, and more particularly to a trowel device used for applying concrete to a side wall of a tunnel in tunnel construction or the like.

(Prior Art) Conventionally, when painting concrete on a wall surface in this kind of construction, a quadrangular flat plate with a brush or brush attached around the trowel is used, and the concrete wall surface is the object. Had been smeared on.

(Problems to be solved by the invention) However, when the above-mentioned iron is used, the lap portion becomes uneven when performing overcoating.

That is, FIG. 7 is a top view showing overcoating with a conventional iron, and FIG. 8 is a VIII-VIII cross section of FIG. 7, a is a square iron, and a brush having a single property around it. Alternatively, the brush b is attached.

A is existing concrete, B is a new coating portion, C is a lap portion where A and B are overlapped, and X is a coating direction of the iron a.

In this way, when overcoating is performed with the conventional trowel, the unevenness as shown by D is generated in the lap portion C as shown in FIG. 8 by the brush or brush b provided on the side of the trowel.

This invention intends to obtain an iron device that solves the above problems.

(Means and Actions for Solving the Problems) The present invention has been made in view of the above points, in which a concrete supply hole is provided at the center of the iron body of the iron device for concrete application, and the concrete application side of the iron body is provided. A brush for finishing is attached along the outer peripheral edge of the iron body, and a concrete seal and a brush for applying are attached along the inner peripheral edge of the brush. The brush is rigid, and the brush for finishing is soft. It is possible to apply multiple layers by using a concrete material without causing unevenness in the wrapping portion of the existing coating portion of concrete.

(Example) Next, the Example of this invention is described based on drawing.

Referring to FIGS. 1 and 2, reference numeral 1 denotes a trowel device of the present invention. The trowel device 1 has a generally circular trowel body 2 and a concrete supply hole 4'in the center of the trowel body 2. Yes, the trowel body 2 is on the side of the trowel body 2 where concrete is applied.
Install the finishing brush 3 ₂ along the outer periphery of the brush
A concrete seal and a brush 3 ₁ for painting were attached along the inner peripheral edge of 3 ₂ .

The brush 3 ₁ uses a rigid one and the brush 3 ₂ uses a weak one.

In addition, 4 shows a concrete supply pipe.

Therefore, as described above, since the brush 3 ₁ uses a rigid one and the brush 3 ₂ uses a weak _one , the brush 3 ₁ is
As shown in FIG. 4 (b), when the brush is leaned against the right-angled wall W downward, the brush 3 ₁ can stand on its own, whereas the brush 3 ₂ cannot stand on its own.

5 and 6 show the state of overcoating using the ironing device of the present invention.

Concrete that has been applied by the inner rigid brush 3 ₁ and has come out, or the above brush
The concrete pushed away by 3 ₁ is softly stroked by a soft brush 3 _{2 with} no self-supporting property provided on the outside to give a finishing action, and as shown in FIGS. In a portion C where a certain already-applied portion A and a new-applied portion B overlap, no unevenness is generated, and it becomes possible to apply multiple layers.

(Effect of the device) Since the device of the present invention is constructed as described above, the properties of the concrete seal and the brush or brush for painting which are arranged around the iron body are leaned against the right angle wall by leaning the brush downward. Use something that is rigid enough to be self-supporting when
By using a soft brush that can not stand on its own, the finishing brush provided on the outside of it does not cause unevenness in the lap portion where the existing concrete part and the newly painted part wrap, and it is possible to apply multiple coats. It is possible.

[Brief description of drawings]

1 is a perspective view of a trowel which is an essential part of an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIGS. A brush and an outer brush are shown, and FIGS. 4 (a) and 4 (b) are explanatory views showing the presence or absence of each of the above-mentioned brushes, respectively, and FIG. , Fig. 6 is VI- in Fig. 5
FIG. 7 is a sectional view taken along line VI, FIG. 7 is an explanatory view of the action of overcoating with a conventional iron, and FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 1 ...... Ironing device 2 ...... Iron body 3 ₁ ...... Brush for concrete seal and painting 3 ₂ ...... Finishing brush 4 '... Concrete supply hole

Claims (1)

[Scope of utility model registration request] 1. A provided concrete supply holes 4 'in the center of the concrete smeared for iron device 1 of the iron body 2, mounting the finishing brush 3 ₂ along the outer periphery of the iron body 2 to concrete smeared side of iron body 2 together, the brush 3 ₂
A concrete seal and a brush 3 ₁ for application are attached along the inner peripheral edge of the brush, the brush 3 ₁ is a rigid _one , and the brush 3 ₂ is a soft one. Iron device.