JPS6123079Y2 - - Google Patents

Description

[Detailed explanation of the invention] The diameter of the corrosion-protected anchor body is determined by the number of tensile resistant materials such as PC steel installed in the trunk body and the size of the anchor hole into which the tensile resistant materials are inserted. It is determined. For this reason, conventionally, center risers for maintaining a constant gap between the anchor hole wall and the anchor body have to be manufactured and prepared in several types depending on the outer diameter of the anchor body. It was hot.

This invention solves the above-mentioned drawbacks and provides a center riser that can be used for corrosion protection anchor trunks of various sizes by cutting or overlapping one type of center riser. .

Next, an embodiment of this invention will be described based on the drawings. In FIG. 1, an appropriate number of chevron-shaped protruding plates 1 are connected on both sides with band-shaped thin plates 2 in a ladder-like manner, and anti-slip protrusions 3 are provided at both ends of the thin plates 2, facing the chevron-shaped protruding plates 1.
It is a belt-shaped center riser body with a second
In the figure, one end is provided with a fixing groove 6, the other end is provided with a mounting protrusion 7 having a predetermined length, and the attachment protrusion 7 is inserted into the fixing groove 6 so as to be wrapped around it. A fixing band 4 that enables fixing, and a third
The figure shows a corrosion-protecting anchor body 5 to which a center riser body is attached by a fixing band 4. According to this invention, strip-shaped thin plates 2 connected in a ladder-like manner
cut to fit the outer periphery of the anchor trunk body 5,
Alternatively, after overlapping and winding, the attachment protrusions 7 may be inserted into the fixing grooves 6 of the fixing band 4 at both ends of the thin plate 2, and the thin plates 2 may be tightly connected.

As mentioned above, according to this invention, it is possible to wrap the band-shaped center riser body around the outer circumference of the corrosion-protecting anchor body at various outside diameters, cut it, or polymerize it and tighten it. It can be used with one type of center riser regardless of its diameter, and has the effect of maintaining a constant gap between the anchor hole wall and the anchor body.

[Brief explanation of the drawing]

Figure 1 shows the center riser body of this invention, Figure 2 shows the fixing band, and Figure 3 shows the following:
This is a corrosion-protected anchor body with a fixing band attached to the center riser body. 1: Chevron-shaped protrusion plate, 2: Thin plate, 3: Anti-slip protrusion, 4: Fixing band, 5: Corrosion protection anchor body, 6: Fixing groove, 7: Mounting protrusion.

Claims (1)

[Scope of utility model registration request] A suitable number of belt-shaped thin plates are connected to the outer periphery of the corrosion protection anchor trunk on both sides in a ladder shape, and the thin plates are wrapped around the outer periphery of the corrosion protection anchor trunk and both ends of the thin plates are tied together with fixing bands. A center riser with a corrosion-protective anchor trunk.