JP2001303598A - Apparatus for marking finished surface of concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple apparatus for providing a mark indicating the height of the finished surface of cast-in-place concrete, on the inner wall surface of a concrete block or that of a cast-in-place concrete form, the apparatus being convenient to carry around and handle and being usable also as an apparatus for indicating finished dimensions in holding the end of a snapping line and in taking pictures. SOLUTION: The apparatus includes a straight ruler insertion part having a positioning means for the zero point of a straight ruler; a fixing means for holding the ruler inserted in the straight ruler insertion part; and a marker or a marker holder provided in a position coinciding with the position of the zero point of the ruler inserted. The straight ruler is inserted in the ruler insertion part with its zero point set at the positioning means, and the marker such as a felt pen is fixed to a marker holding member; a second ruler or a pin is mounted in the graduated position of the desired depth of the straight ruler in a perpendicular direction by means of a cross fitting, and the straight ruler is inserted into the block or form so that the second ruler or the pin abuts the straight ruler. Then a mark is made with the marker.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for marking the inner wall surface of a concrete block or the inner wall surface of a cast-in-place concrete formwork to indicate the height of the finished surface of cast-in-place concrete.

[0002]

2. Description of the Related Art When constructing a gutter or a cast-in-place concrete retaining wall, it is necessary to attach a mark indicating a concrete casting surface on a gutter block or an inner wall surface of a formwork assembled on site. Become. This operation will be described with reference to the variable slope side groove as an example.

[0003] As is well known, a variable slope gutter block is an inverted U-shaped block having an opening on the upper surface. After being arranged along the edge of the road, the bottom surface is finished with invert concrete (bottom concrete). Be built. According to this method, the slope of the groove defined by the surface of the inverted concrete can be freely designed irrespective of the gradient of the ground surface. It is necessary to construct the height as designed.

[0004] Therefore, in the construction, after arranging the blocks, a ruler is inserted from the opening on the upper surface of the block to mark the position of the finished surface height of the inverted concrete, and the finished surface height is further adjusted using black ink. The work is performed in a process of providing a mark line shown and pouring concrete in accordance with the mark line.

[0005] Such a work is also performed when, for example, constructing a retaining wall made of cast-in-place concrete, when adjusting the height of the top end of the retaining wall, and is performed on the control panel constituting the formwork. A ruler is inserted from the edge, a mark is placed on the inner wall surface of the control panel, and a mark line is formed by connecting the mark with black thread, and the upper surface of the retaining wall is finished based on this mark.

[0006]

When a concrete structure to be constructed is a narrow gutter or a retaining wall, the space for placing the concrete is narrow, so that an operator needs to remove the block or formwork. Since it is not possible to go inside and perform the marking work, it is necessary to work with the ruler and arm inserted through the opening at the upper end and look in,
There is a problem that the posture is cramped and the work load is large, and an error easily occurs in the position of the mark.

[0007] Further, even when the marking line is to be attached, it is necessary to perform a work of aligning both ends of the ink thread with the mark and playing the ink thread in such a manner that two workers peek from above. There is a problem that the posture is cramped and errors easily occur as in the case of marking.

[0008] The present applicant has solved the above-mentioned problem,
Japanese Patent Application Laid-Open No. H11-170183 proposes an apparatus used to mark a line on the inner wall surface of a block for a variable slope side groove. It is an object of the present invention to provide a more portable and easy-to-handle device for solving the above-mentioned problems. In addition to the above-described marking work with a single device, it is also possible to hold and hold the black yarn end. It is an object of the present invention to obtain a simple device that can be used as an instrument indicating a finished dimension when taking a photograph of the finished shape.

[0009]

[Means for Solving the Problems] In civil engineering work, a linear ruler for measuring length and height is widely used.
This straight ruler has a substantially constant thickness and width. Furthermore, a device called a cross fitting for holding two straight rulers in an intersecting state is widely used. The marking device of the present application is fixed to the tip of a straight ruler so that a mark or a mark line can be attached to the inner wall surface of the slope-variable side groove block or the inner wall surface of the cast-in-place concrete formwork.

According to the first aspect of the present invention, there is provided a concrete surface marking apparatus for positioning a zero point 3 of a straight ruler 16.
And a fixing means 4 for holding the ruler inserted into the straight ruler insertion portion, and a marker or marker holding device provided at a position corresponding to the zero point position of the inserted ruler. Tool 13.

According to the invention of claim 2 of the present application, a folding device 15 for preventing a straight ruler inserted into the ruler insertion portion 9 from falling, and a side direction of the inserted ruler are provided in a marking device having the above means. An index 11 is provided.

According to a third aspect of the present invention, there is provided a marking device provided with the above means, wherein the direction intersecting the extending direction of the linear ruler provided at the zero point position of the linear ruler inserted into the ruler insertion portion 9 is provided. The yarn hooking groove 14 and the yarn end holder 12 are provided.

According to a fourth aspect of the present invention, in the marking device having the above-mentioned means, a ruler insertion portion 9 is formed between the two clamp members 6 which are swingably opened and closed, and a zero-point positioning means is provided. An urging spring 4 formed by a contact portion 10 provided on a pivot bracket 2 for pivotally connecting the two clamp members to each other, and urging the two clamp members in a closing direction with a fixing means of a linear ruler. It was done.

In the above-described apparatus, a straight line ruler is inserted into the ruler insertion section 9, the zero point thereof is aligned with the positioning means 10, 34, a marker such as a felt pen is fixed to the marker holding member 13, and a desired depth of the straight line ruler is obtained. At the scale position, a second ruler or pin 26 is attached at right angles with a cross bracket or the like, and the straight ruler 16 is inserted inside the block or formwork until the second ruler or pin abuts on the upper surface of the block or formwork. In,
The marker is marked by pressing or rubbing the tip of the marker against its inner wall surface.

When a mark line is to be added, the tip of the black thread is held at the holding member 12 and inserted into the thread holding groove 14 to insert the straight ruler 16 so that the tip of the black thread has a desired height. Hold on. The other end of the black thread is held by using the device of this application in the same manner as the tip, or the operator holds down the mark in accordance with the mark already provided, and marks the mark line by flipping the black thread. .

The tip of the black thread can be held by fitting the black thread into a slit or the like, instead of using the cork material shown in the embodiment.

Since the base end of the straight ruler 16 used for civil engineering and construction work has a zero point, if the contact portion 10 provided on the back side of the ruler insertion portion 9 is used as a zero point positioning means,
The zero point can be positioned simply by inserting the ruler 16 into the ruler insertion section 9.

If the marking device of this application is provided with the index 11, it is attached to the intermediate position of the straight line ruler when taking a photograph of the finished shape (finished shape) of the civil engineering structure, and the index 11 adjusts the product size. It can be used to indicate the scale on the corresponding straight ruler. At this time, if the folding leg 15 is opened to support the straight ruler, the straight ruler is held upright when taking a picture. You can also put it.

The folding leg 15 can also be structured to be opened by pulling out, rotating, or the like, and the leg having such a structure is also included in the folding leg referred to in the present application.

[0020]

1 to 3 are views showing a first embodiment of the present invention. The marking device of the first embodiment includes:
2 of substantially symmetrical shape with the middle part pivotally connected by a fulcrum pin 1
It has a structure similar to a large laundry pinch as a whole, including a plurality of clamp members 6. The clamp member 6 integrally includes the pivot bracket 2, and is provided with a leaf spring 4 that urges the two in one direction (clamp direction) around the fulcrum pin 1. A non-slip rubber member 7 is adhered to the tip of the clamp member 6, and a rubber member 8 to be used as a finger hook is adhered to the knob side of the clamp member 6. A space 9 on the distal end side of the two clamp members 6 serves as a straight ruler insertion portion, and a groove-shaped contact portion 10 is formed in a pivotal bracket 2 that supports the fulcrum pin 1 at the back end thereof in a side view. Have been.

A part of the clamp member 6 on the side of the straight ruler insertion portion 9 is thinly projected to form an index 11, and a cork plate 12 serving as a black yarn end holder is formed on the outer surface of one clamp member. A pen (marker) holder 13 is attached to the outer surface of the other clamp member.

Further, a V-shaped thread catching groove 14 for defining the position of the black thread is provided on the side edges of the clamp members 6 and 6. A base end of a folding leg 15 made of a metal wire bent in a U-shape is pivotally attached to the finger hook 8 on the side where the pen holder 13 is provided in such a manner as to be inserted from both sides. Thread groove 1
When the straight ruler 16 is inserted into the ruler insertion portion 9, the center of the pen holder 13 coincides with the zero point position of the ruler abutting on the contact portion 10 (usually the position of the contact portion 10). Is provided.

FIG. 4 shows a state in which the marking device of the first embodiment is attached to a straight ruler. The marking device 17 includes the clamp member 6.
Is opened, and the linear ruler 16 is held by inserting and clamping the tip (the side of the scale 0) of the straight ruler 16 until it comes into contact with the contact portion 10. Felt pen 1 in pen holder 13
A marker such as 9 is attached. At the top of the straight ruler 16,
A second straight ruler 21 (or a pin 26 as shown in FIG. 5) is attached via a cross bracket 20 so as to be orthogonal to the straight ruler 16. Since the cross bracket 20 is movable along the straight ruler 16 and can be fixed by a fixing screw, the cross bracket is positioned at a position where the lower side of the second straight ruler 21 is a scale of a desired depth of the straight ruler. 20 is fixed.

After attaching the marking device to the straight ruler 16 as described above, as shown in FIG. 4, the straight ruler 16 is inserted into the opening 22 on the upper surface of the variable slope side groove block 23.
The tip of the marker 19 is pressed against the inner wall surface of the block in a state where the lower side of the second straight ruler 21 is in contact with the upper surface of the block, and the straight line ruler 16 is slightly moved to rotate around the vertical axis. A mark is provided at a predetermined height position on the inner wall surface.

FIG. 5 shows a state in which the tip of the black thread is held by a marking device attached to the tip of the straight ruler as shown in FIG. Since a stopper 24 with a needle is attached to the tip of the black thread, the needle is inserted into the cork plate 12, and the black thread 25 extending therefrom is guided by the thread groove 14. Similarly to the case of attaching the mark, the cross fitting 20 is moved and fixed so that the lower surface of the pin 26 having the cross fitting 20 attached thereto is at a graduation position of a desired depth, and the marking device 17 and the black thread are fixed. Insert the ink bottle connected to 25 into the opening 22 of the block,
The ink pot 27 was handed over to the block already marked, and another worker pressed the thread end on the ink pot side in accordance with the mark, and the thread hooking groove 14 of the marking device 17 was provided. The side is pressed against the inner wall surface of the block, and the black ink thread is stretched. In this state, the black ink thread is flipped to mark the inner wall surface of the block.

Further, as shown in FIG. 6, the marking device of the first embodiment uses a linear ruler 16 for displaying the finished size of a civil engineering building when taking a photograph showing the finished size.
1 can be used to hold the ruler 16 in an upright position by opening the folding leg 15 by attaching it from the side so that 1 coincides with a predetermined scale position. Without the need for a photo shoot.

7 to 10 show a second embodiment of the marking device of the present application. In the second embodiment, the square hole 37 of the flat rectangular tubular slide member 32 is used as the ruler insertion portion 9, and a window 33 is provided in a part of the ruler insertion portion 9, and the edge of the window is provided at the edge of the window. Is provided with a zero scale 34 to serve as a ruler positioning means. The point that the pen holder 13 is fixed to the outer surface of the slide member 32, the cork plate 12 for holding the tip of the black thread is stuck, and the thread hooking groove 14 is formed on the side face is the first embodiment. Same as the example. The centers of the threading groove 14 and the pen holder 13 coincide with the zero point scale 34.

In the second embodiment, the straight ruler inserted into the ruler insertion portion 9 is fixed by a fixing screw 35 screwed to a slide member. The fixing screw 35 has a knob 36 at an outer end. The fixing screw 35 may be configured to be screwed to the side surface of the slide member 32 to fix the straight ruler 16 in the width direction.

In the second embodiment, the marking device 17 is fixed to the tip of the straight ruler 16 with a set screw 35, and the side of the straight ruler is guided by a square hole. Of the marking device 17 is more stable. Also the first
By providing the index 11 and the folding leg 15 similar to those of the embodiment, FIG.
As shown in (1), when the straight line ruler 16 is inserted, it can be used as a dimensional indicator when taking a finished photograph.

Although not particularly shown in the drawing, instead of the cork plate 12 for holding the tip of the black thread, a stopper 24 at the tip of the black thread is provided by an L-shaped metal fitting having a thin slit through which the black thread is inserted. It is also possible to provide a structure in which a black pot holder is provided in place of the cork plate 12 and the black pot is attached to the black pot holder to hold the end of the black thread on the black pot side.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing a first embodiment of a marking device of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a view taken in the direction of arrow B in FIG. 1;

FIG. 4 is an explanatory diagram for performing marking using the marking device of the first embodiment.

FIG. 5 is an explanatory view for marking lines using the marking device of the first embodiment.

FIG. 6 is an explanatory view when taking a finished photo using the marking device of the first embodiment.

FIG. 7 is a front view showing a second embodiment of the marking device.

FIG. 8 is a top view of FIG. 7;

FIG. 9 is a side view of FIG. 7;

FIG. 10 is an explanatory diagram when taking a finished photograph using the marking device of the second embodiment.

[Explanation of symbols]

 2 pivot bracket 3 zero point 4 leaf spring 9 space 10 abutment part 11 index 12 cork board 13 pen holder 14 thread hook groove 15 folding leg 16 straight ruler 34 zero scale 35 fixing screw

Claims (4)

[Claims] 1. A means for positioning a zero point (3) of a straight line ruler (16).
(10, 34), a straight ruler insertion portion (9), fixing means (4, 35) for holding a ruler inserted into the straight ruler insertion portion, and a position matching the zero point position of the inserted ruler. And a marker or marker holder (13) provided on a concrete surface. 2. A foldable leg (15) for preventing a straight ruler inserted into a ruler insertion portion (9) from falling down, and an index (11) pointing in a side direction of the inserted ruler. A marking device for a concrete surface according to claim 1. 3. A thread hook groove (14) provided at a zero point position of the straight ruler inserted into the ruler insertion portion (9) and extending in a direction intersecting the extending direction of the straight ruler, and a thread end holder (12). )
3. A device for marking a concrete surface according to claim 1 or 2. 4. A pivot for pivotally connecting the two clamp members with a ruler insertion portion (9) formed between the two clamp members (6) which are pivotally opened and closed. The abutment (10) provided on the bracket (2), wherein the fixing means is an urging spring (4) for urging the two clamp members in a closing direction. A marking device for concrete surfaces.