JPH0431409Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a jig used for creating mortar for leveling the legs of a steel column of a steel frame structure.

[Conventional technology and its problems]

In the construction of steel frame structures, leveling mortar, commonly known as ``manjiyu,'' is often used to determine the height position of the steel frame.

Conventionally, this leveling mortar was created by piling mortar material into a mound at the part where the base plate of the steel column joins, and leveling the top with a metal trowel to create a flat finish. This flat finishing of the top is an important element in determining the level, so in the method using a metal trowel, it is necessary to proceed with the work while checking the height with a measuring device such as a level many times during the work, which is time-consuming.

On the other hand, it is also possible to use the nuts of the anchor bolt group for height positioning and flatten the mortar material with a flat plate.

The procedure for this method is to attach a nut to a group of protruding anchor bolts, and adjust the height of the nut while checking the level. Next, apply unhardened mortar material to the center of the group of anchor bolts. Then, a flat plate (template) with a plurality of holes made according to the arrangement of the anchor bolt group is fitted onto the anchor bolt group, and the flat plate is pressed down along the anchor bolt group to flatten the mortar material. While crushing, the anchor bolt group is brought into contact with each nut installed at the same height.

However, this method requires a flat plate with bolt holes aligned with each anchor bolt group, and has the disadvantage that there are many types of flat plates.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
It is an object of the present invention to provide a so-called versatile jig for leveling mortar for the legs of a steel frame structure that is compatible with the positions of arbitrarily arranged anchor bolts.

[Means for solving problems]

In order to achieve the above object, the present invention provides that one end of a arm is bolted to a flat plate through an elongated hole, and a through hole for an anchor bolt is formed at the other end of the arm that protrudes from the outer periphery of the flat plate. It is something.

[Effect]

According to the present invention, a flat plate (template) is used and the flat plate is pressed down using the anchor bolt as a guide to flatten the mortar material. in this case,
The flat plate is spanned between the anchor bolts via the arms, and the protrusion length of these arms can be adjusted with elongated holes, so the flat plate can always be set at the desired position even if the distance between the anchor bolts is different. .

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a plan view showing one embodiment of the jig for leveling mortar for the legs of a steel frame structure according to the present invention, and Fig. 2 is a sectional view taken along the line A-A in Fig. 1, in which 7 indicates an anchor bolt; 3 is a flat plate (template) having a circular or other shape.

A bolt 1 is raised on the flat plate 3, and one end of the arm 2 is fixed by the bolt 1 with a nut 11 through an elongated hole 5, and the other end of the arm 2 is made to protrude from the outer periphery of the flat plate 3. This long hole 5 is formed in the length direction of the arm 2.

Further, a total of four arms 2 are fixed on the flat plate 3, and a bolt 1 may be set up for each arm, but in this embodiment, one pair of arms is fixed with one bolt. did.

A through hole 12 for an anchor bolt 7 protruding from the foundation concrete 6 was formed at the other end of the arm 2. This through hole 12 may also be a long hole in the length direction.

Next, how to use it will be explained. The nut (anchor nut) 8 attached to the anchor bolt 7 is
Adjust the height according to the leveling mortar (manjiyu) to be created using a level etc.

Then, as shown in Fig. 3, the anchor bolt 7
Place 10 pieces of unhardened mortar in the center of the group.

On the other hand, loosen the nuts 11 of the jig, move each arm 2, adjust the protruding length of the arm 2 so that the through hole 12 matches the anchor bolt 7, and tighten the nuts 11 again.
Tighten to secure arm bar 2.

After arranging the thickness adjusting members 4, 4' on the nut 8, insert the anchor bolt 7 into the through hole 12, and using the anchor bolt 7 as a guide, hold the arm 2 until it abuts the thickness adjusting members 4, 4'. and press down the flat plate 3. In this way, the lower surface of the flat plate 3 crushes the upper surface of the mortar 10 and the desired shape of the mandible is prepared, and then the jig is removed from the group of anchor bolts 7. In order to facilitate early removal of the jig and prevent staining, it is preferable to spread a polyethylene film 9 or the like on the mortar 10 in advance.

For the removed jig, it is convenient to transport and load the jig by placing the arm 2 on the surface of the flat plate 3 and then tightening the nut 11 slightly loosely so that the arm 2 does not move much. .

By the way, the thickness adjusting members 4, 4' are like washers and are used to adjust the thickness of the arm 2 and the flat plate 3. Therefore, the thickness adjustment material 4 is made to match the thickness of the flat plate 3, and the thickness adjustment material 4' is made to match the thickness of the flat plate 3.
and the thickness of one arm block 2.

Incidentally, it is also possible not to use the thickness adjusting members 4, 4', and in that case, the selected position of the nut 8 may be determined in consideration of the thickness of the flat plate 3 and the armrest 2.

[Effect of idea]

As mentioned above, the jig for making mortar for leveling the legs of steel frame structures of the present invention uses anchor bolts and flat plates to flatten the top of the leveling mortar to the desired height, so a metal trowel is used. It's not as troublesome as it is in other cases. Furthermore, since the flat plate is installed on the anchor bolt via a movable arm, it can be applied regardless of the arrangement of the anchor bolt, and is versatile.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the jig for leveling mortar for the legs of steel frame structures of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 shows the same in use. FIG. 1... bolt, 2... arm, 3... flat plate, 4,
4'... Thickness adjustment material, 5... Long hole, 6... Foundation concrete, 7... Anchor bolt, 8... Nut, 9... Polyethylene film, 10... Mortar, 11... Nut, 12... ...through hole.

Claims (1)

[Scope of utility model registration request] A tool for leveling mortar for the legs of a steel frame structure, characterized in that one end of the arm is bolted onto a flat plate through an elongated hole, and a through hole for an anchor bolt is formed at the other end of the arm protruding from the outer periphery of the flat plate. Ingredients.