JP2006152611A - Indication implement for upper surface of concrete - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indication implement for an upper surface of concrete, which can enhance working efficiency by enabling the positioning of an upper-surface indication part to be performed in a short period of time. <P>SOLUTION: This indication implement comprises: a mounting means 1 which can be mounted and fixed on a vertical reinforcement 5 or a horizontal reinforcement 6; a pole 2, the lower end of which is pressed into a vertical hole 14, provided in the mounting means 1, in an upward extractable manner; an upper-surface indication member 3 which is equipped with an upper-surface position indication plate 32 mounted on the pole 2 in a vertically movable manner; and a fixing means 4 which can make the indication member 3 fixed in the arbitrary moving position of the pole 2. The fixing means 4 comprises a nut-like fitting 41 which is mounted and fixed to the outer periphery of a small-diameter part 31a, and a thumbscrew 42 which is screwed into a female screw hole 41a formed in the state of passing through a side wall of the nut-like fitting 41. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a concrete top end indicator for displaying the top end position of concrete to be placed in laying work of reinforced floor concrete.

  For example, as shown in FIG. 5, a conventional top end display tool of this type includes a mounting bracket 103 having a nut 101 at one end and a reinforcing bar mounting portion 103 a that is detachably attached to the reinforcing bar 102 at the other end. A device comprising a top end display member 104 provided with an adjustment bolt 104a screwed to the nut 101 so as to be able to advance and retreat is disclosed in the lower part (see, for example, Patent Document 1).

No. 7-56452

  However, since the position of the top end display member 104 is adjusted by adjusting the screwing amount of the adjustment bolt 104a with respect to the nut 101 in the top end display tool of the conventional example, the relationship with the screw pitch. However, there was a problem that the position adjustment took time and the work efficiency was poor.

  The problem to be solved by the present invention is to provide a concrete top end display tool capable of adjusting the position of the top end display portion in a short time and thereby improving work efficiency.

  In order to solve the above-mentioned problem, the concrete top end indicator according to claim 1 has an attachment means that can be attached and fixed to a reinforcing bar, and a lower end that is press-fitted upward to a vertical hole provided in the attachment means. A pole, a top end display member provided with a top end display portion mounted so as to be movable up and down with respect to the pole, and a fixing means capable of fixing the top end display member at an arbitrary movement position of the pole. It was made the means characterized by being.

  The concrete top end indicator according to claim 2 is the concrete top end indicator according to claim 1, wherein the pole is made of a flexible material.

  The concrete top end indicator according to claim 3 is the concrete top end indicator according to claim 1 or 2, wherein the top end display member can be mounted on the outer periphery of the pole so as to be movable up and down. A plate-like top end display portion formed at the lower end of the tube portion, and the fixing means is formed by a thumbscrew screwed to the tube side wall of the top plate display member. It was set as means.

  In the concrete top end indicator according to claim 1, as described above, the top end display member provided with the top end display portion is attached to the pole so as to be movable up and down, and can be fixed at an arbitrary moving position by the fixing means. Because of the simple structure, the position of the top end display unit can be adjusted in a short time even if the movement width is large, thereby obtaining the effect that the work efficiency can be improved.

In addition, since the pole is simply press-fitted into the vertical hole provided in the mounting means, it can be easily pulled out at the stage when the concrete placement work is finished. The efficiency of the removal work of poles including can be increased.
In addition, a pole with no irregularities on the surface is easier to extract from the cast concrete than a conventional male screw.

  In the concrete top end indicator according to claim 2, as described above, the pole is made of a flexible material. The safety of the operator can be ensured without hindering, and the bent pole returns to its original state due to its flexibility, so that the top end display function can be maintained.

In the concrete top end display tool according to claim 3, as described above, the top end display member has a cylindrical portion that can be mounted on the outer periphery of the pole so as to be movable up and down, and a plate-like shape formed at the lower end of the cylindrical portion. With the top end display portion, the top end display position can be accurately adjusted.
In addition, since the fixing means is constituted by a thumbscrew screwed into the cylindrical side wall of the top plate display member, the position of the top end display portion can be easily adjusted by loosening the thumbscrew. It can be fixed at an arbitrary position by screwing the thumbscrew.

  Embodiments of the present invention will be described below with reference to the drawings.

The concrete top edge indicator of the first embodiment corresponds to the invention described in claims 1 to 3.
First, the concrete top end display of Example 1 will be described with reference to the drawings.

FIG. 1 is a front view of the concrete top end display device according to the first embodiment in an attached state, FIG. 2 is a front view showing a clip body, and FIG. 3 is a cross-sectional plan view taken along line AA in FIG.
This concrete top end display tool includes a mounting means 1, a pole 2, a top end display member 3, and a fixing means 4 as main components.

More specifically, the attachment means 1 is means for attaching and fixing the lower end portion of the pole 2 to the reinforcing bar. In the first embodiment, a type of attaching to the vertical reinforcement 5 will be described.
That is, the attachment means 1 is composed of a clip body 1a, a pole attachment portion 1b, and a fastening member 1c.

  The clip body 1a is formed in a U-shape, for example, provided with a pair of parallel two-surface portions 11, 12 facing each other by bending a steel plate, and a back surface portion 13 connecting them, and the central portion of the parallel two-surface portion 11 A long hole 11a is bored in the projecting direction, and a bolt hole 12a is bored in the center of the parallel two-surface portion 12. In addition, the hole 13a drilled in the center of the back surface portion 13 is a type that is attached to a horizontal bar 6 to be described later, in addition to playing a role of making the concrete enter inside the back surface portion 13 when placing concrete. It is drilled for sharing with the clip body 1a in the second embodiment.

The pole 2 is made of a flexible synthetic resin round bar such as diracon.
The pole mounting portion 1b has a hexagonal cylindrical shape, and a vertical hole 14 into which the lower end portion of the pole 2 can be inserted is provided in an axial center portion of the pole mounting portion 1b. With the portion inserted, it is assembled in a state where it is press-fitted to the extent that it can be pulled out upward by the frictional resistance of the caulking portion a by pressing in a spot manner from the side into the vertical hole 14 and caulking. Yes.

And this pole attaching part 1b is being fixed to the inner side of the connection corner part of the parallel two face part 12 in which the bolt hole 12a in the said clip main body 1 was pierced, and the back surface part 13 by welding or welding.
In addition, the length of the back surface portion 13 is set so that a space in which the vertical bars 5 can be inserted is formed between the parallel two surface portions 11 of the clip main body 1a and the pole mounting portion 1b.

The fastening member 1c serves to fasten and fix the vertical bars 5 to the clip body 1a, and a fastening bolt 16 having a wedge-shaped head portion 15 having a wide end, and a fastening nut screwed to the fastening bolt 16 17.
The wedge-shaped head portion 15 is formed so that it can be inserted into a long hole 11a formed in the parallel two-surface portion 11, and its wide end portion is wider than the longitudinal width of the long hole 11a.

  The top end display member 3 serves to display the position of the top end, and a cylindrical portion 31 that can be mounted on the outer periphery of the pole 2 so as to be movable up and down, and a disc shape formed at the lower end of the cylindrical portion 41 The top end position display plate (plate-like top end display portion) 32 is integrally formed of synthetic resin.

  The fixing means 4 serves to fix the top end display member 3 at an arbitrary movement position of the pole 2, and is mounted and fixed to the outer periphery of a small diameter portion 31a formed on the upper end side of the cylindrical portion 31. The nut-shaped metal fitting 41 and a thumbscrew 42 screwed into a female screw hole 41a formed in a state of penetrating the side wall of the nut-shaped metal fitting 41 are configured.

  Then, by screwing the thumbscrew 42, the tip of the thumbscrew 42 pushes the side wall of the small-diameter portion 31a formed on the upper end side of the cylindrical portion 31 inward to press-contact with the pole 2, thereby displaying the top end display. The member 3 can be fixed at a predetermined position of the pole 2.

Next, operations and effects of the first embodiment will be described.
Since the concrete top end indicator of Example 1 is configured as described above, it is formed between the pole mounting portion 1b and the parallel two-surface portion 11 with the fastening nut 17 constituting the fixing means being loosened. When the fastening nut 17 is screwed into the fastening bolt 16 with the vertical bar 5 inserted into the space, the one tapered side surface b1 of the wedge-shaped head 15 abuts the side surface of the vertical bar 5 and the other side. The taper side surface b2 is in contact with one inner peripheral surface c of the elongated hole drilled in the parallel two-surface portion 11, and the fastening nut 17 is further screwed in this state, so that one taper side surface b1 of the wedge-shaped head portion 15 is The reinforcing bar 5 is pressed in the direction of the back surface part 13 and the pole attaching part 1b, whereby the attaching means 1 is fixed to the reinforcing bar 5.

  Next, when adjusting the position of the top end position display plate 32 to the target top end position, if the thumbscrew 42 is loosened, the pressure contact state of the small diameter portion 31a with respect to the pole 2 is released, and the pole 2 of the top end display member 3 is released. Since the fixed state is released, the top end display member 3 is moved up and down with respect to the pole 2 to adjust the top end position display plate 32 to the target top end position, and the thumbscrew 42 is screwed in this state. As a result, the tip of the thumbscrew 42 pushes the side wall of the small-diameter portion 31a formed on the upper end side of the cylindrical portion 31 inward to press-contact the pole 2 so that the top end display member 3 is positioned at a predetermined position on the pole 2. Can be fixed to.

  As explained in detail above, in the concrete top end indicator of the first embodiment, the top end display member 3 is mounted so as to be movable up and down with respect to the pole 2, and can be fixed at an arbitrary moving position by the fixing means 4. Because of this structure, the position of the top end position display plate 32 can be adjusted in a short time even if the movement width is large, thereby obtaining the effect that the work efficiency can be increased.

Further, since the pole 2 is simply press-fitted into the vertical hole 14 provided in the mounting means 1, it can be easily pulled out at the stage when the concrete placing work is finished. The efficiency of the removal work of the pole 2 including the end display member 3 can be increased.
Further, the pole 2 having no irregularities on the surface can be easily extracted from the cast concrete as compared with the conventional male screw.

  In addition, since the pole 2 is made of a flexible material, even if the pole 2 is in contact with the concrete supply pipe, the pole 2 bends so that the moving operation is not hindered. In addition to being able to ensure, the bent pole 2 also returns to its original state due to its flexibility, so that the top end display function can be maintained.

  The top end display member 3 includes a cylindrical portion 31 that can be mounted on the outer periphery of the pole 2 so as to be movable up and down, and a disk-like top end position display plate 32 formed at the lower end of the cylindrical portion 31. Thus, the top end display position can be adjusted accurately.

  The fixing means 4 has a nut-like metal fitting 41 attached and fixed to the outer periphery of the small-diameter portion 31a formed on the upper end side of the cylindrical portion 31, and a female screw hole formed so as to penetrate the side wall of the nut-like metal fitting 41. By being composed of the butterfly screw 42 screwed to 41a, the position of the top end position indicator plate 32 can be easily adjusted by loosening the butterfly screw 42, and the thumbscrew 42 is screwed in. Thus, it can be fixed at an arbitrary position.

  Next, another embodiment will be described. In the description of the other embodiments, the same components as those of the first embodiment are not shown, or the same reference numerals are given and the description thereof is omitted, and only the differences are described.

The second embodiment shows a modification in which the lower end portion of the pole 2 is attached and fixed to the horizontal bar 6.
That is, the concrete top end indicator of the second embodiment uses the clip body 1a in common with the first embodiment, and the difference from the first embodiment is that the pole is attached as shown in FIG. Only the point that the portion 1b is fixed to the inner surface side of the parallel two-surface portion 12 with an adhesive or welding in a state where the portion 1b is inserted along the inner surface side of the parallel two-surface portion 12 from the hole 13a formed in the rear surface portion 13. It is.

  Therefore, the same effect as that of the first embodiment can be obtained in the concrete top edge display tool of the second embodiment.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention.
For example, in the embodiment, a nut-like metal fitting 41 is used as the fixing means 4 and a thumbscrew hole 41a into which the thumbscrew 42 is screwed is formed in the nut-like metal fitting 41. However, the nut-like metal fitting 41 is omitted and the cylindrical portion 31 is directly formed. A thumbscrew hole may be formed.

  Further, the attachment means 1 is not limited to the structure of the embodiment as long as the pole attachment portion 1b can be attached and fixed to the vertical bars 5 or the horizontal bars 6.

It is a front view of the figure attachment state which shows the concrete top end indicator of Example 1. FIG. It is a front view which shows the clip main body in the concrete top end indicator of Example 1. FIG. It is a cross-sectional plan view in the AA line of FIG. It is principal part sectional drawing which shows the concrete top edge display tool of Example 2. FIG. It is a front which shows the concrete top end indicator of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Attachment means 1a Clip main body 1b Pole attachment part 1c Fastening member 2 Pole 3 Top end display member 31 Cylindrical part 31a Small diameter part 32 Disc-shaped top end position display board (plate-like top end display part)
DESCRIPTION OF SYMBOLS 4 Fixing means 41 Nut-shaped metal fitting 41a Female screw hole 42 Thumb screw 5 Longitudinal muscle 6 Lateral muscle 11 Parallel two surface part 11a Long hole 12 Parallel two surface part 12a Bolt hole 13 Back surface 13a Hole 14 Vertical hole 15 Wedge head 16 Fastening bolt 17 Fastening nut

Claims (3)

  Mounting means that can be fixedly attached to the reinforcing bar, a pole whose lower end is press-fitted so as to be able to be extracted upward with respect to a vertical hole provided in the mounting means, and a top end display portion that is mounted so as to be movable up and down with respect to the pole A concrete top end indicator, comprising: a top end display member comprising: a fixing means capable of fixing the top end display member at an arbitrary movement position of the pole.   The concrete top end indicator according to claim 1, wherein the pole is made of a flexible material. The concrete top end display tool according to claim 1 or 2, wherein the top end display member has a cylindrical portion that can be mounted on the outer periphery of the pole so as to be movable up and down, and a plate-like shape formed at the lower end of the cylindrical portion. It consists of a top end display part,
The concrete top end indicator, wherein the fixing means is constituted by a thumbscrew screwed into a cylindrical side wall of the top plate display member.

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