JP2001248166A - Anchor bolt with level indicator panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the correct projected dimension of a concrete-embedded anchor bolt by attaching the anchor bolt at right angles to concrete. SOLUTION: A level indicator panel is attached to a portion of the anchor bolt at right angles to the bolt axis and a colored part serving as a guide to a mortar finished surface is provided thereabove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor bolt used for civil engineering and construction work.

[0002]

2. Description of the Related Art In civil engineering and building foundation work, when anchor bolts are installed, anchor bolts are buried immediately after striking the foundation concrete, leaving a predetermined projection size, and mortar is further painted to a predetermined thickness. To finish the top.

[0003]

Conventionally, anchor bolts are buried or top-end-finished by visual inspection based on the intuition and experience of an operator, so that the bolts do not stand vertically when they are buried.
Also, when the extension of the anchor bolt is insufficient due to the adjustment of the bolt embedding or the variation of the mortar thickness of the top end, the nut installation is not enough. Inconvenience that tightening does not work occurs. An object of the present invention is to provide a technique for improving these.

[0004]

In order to solve the above-mentioned problems, first, according to the present invention, a level indicator plate is provided around an anchor bolt at right angles to a bolt axis. Second, it is configured to mark a predetermined distance upward from the level sign board.

[0005]

[Function] When the anchor bolt is buried in the concrete foundation, the mounting dimensions of the bolt are kept constant until the level indicator plate is in contact with the concrete upper surface, and the level indicator plate is mounted at right angles to the bolt. Therefore, the bolt is buried vertically. A predetermined distance is marked upward from the level marking plate, and serves as a measure of the mortar coating thickness of the top end finish.

[0006]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a main part of an embodiment of the present invention. Considering the final protrusion dimensions required for the anchor bolt and the mortar thickness of the top end, determine the point A in the middle of the bolt and cut the groove (1) at right angles to the bolt axis. The level indicator plate (2) is fitted into the groove (1) and fixed.

The level indicating plate (2) has a function of indicating a position where the bolt is embedded and indicating a direction substantially perpendicular to the bolt axis.
Any structure is acceptable. That is, as long as the horizontality can be recognized practically, deflection and an error in the perpendicularity to the bolt axis can be tolerated, and a hole may be formed or a mesh may be formed. The overhang width from the bolt outer periphery is 0.
About 5 to 3 times is usually sufficient. When the level indicator plate (2) is made of a material with good adhesion to concrete or finishing mortar, such as a metal plate or a metal net, it is finally embedded, but when it is made of plastic with poor adhesion, etc. Before leveling the top with mortar, remove the level indicator (2). In the case of the level indicator plate (2) which is finally removed, the overhang width from the outer periphery of the bolt may be large.

FIG. 2 shows an example of the shape of the level marking plate (2), which is formed by cutting out a part of a donut shape so as to be easily fitted into the groove (1) of the bolt. FIG. 2A shows an example of a stainless steel net, and FIG. 2B shows an example of hard vinyl chloride. Both are fixed simply by detachably fitting them into the groove (1) of the bolt. In the case of hard PVC, 2 on the opposite side of the notch
Put the perforation lines (4, 4 ') of the book a little apart,
By cutting this, the level indicator (2) can be easily removed.

Above the level indicating plate, the outer peripheral surface of the bolt is colored and finished by a distance corresponding to the coating thickness of the top end finishing mortar to obtain a mark (3).

FIG. 3 shows a plurality of grooves (1, 1) in the middle of the bolt.
1 ', 1'') is a front view of a main part of another embodiment, which is cut away. A plurality of protruding dimensions can be accommodated by removably inserting a level indicator plate (2) into one of the grooves. A fixed mark (3, 3 ', 3 ") is provided at a certain distance above the mark.

[0011]

As described above, according to the present invention, the anchor bolts buried in the concrete foundation are vertically mounted, and the protrusion dimensions are finished to a predetermined value, so that there is no excess or shortage.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of an embodiment of the present invention.

FIG. 2 is a plan view showing an example of a level marking plate of the present invention.

FIG. 3 is a front view of a main part of another embodiment of the present invention.

[Explanation of symbols]

 1... Groove 2... Level marking plate 3... Finishing sign 4.

Claims (2)

[Claims] 1. An anchor bolt characterized in that a level indicator plate is provided at right angles to a bolt axis in the middle of the bolt. 2. The anchor bolt according to claim 1, wherein a mark is provided at a predetermined distance above the level mark plate.