JP2019196604A - Anchor hole closing member and handling method of anchor hole closing member - Google Patents

Abstract

To close an anchor hole and to perform rust-proofing treatment conveniently.SOLUTION: An anchor hole closing member 10 which closes an anchor hole PH where an anchor rod 1 used for lifting a concrete product P is embedded, includes: a body part 11 which can be fitted in the anchor hole PH; an interference avoidance hole 12 formed at the body part 11 so as to avoid interference with the anchor rod 1; a plate spring 13 mounted on the interference avoidance hole 12, and for holding the body part 11 in the anchor hole PH by being engaged with a flange part 1b formed at a head of the anchor rod 1; and a grout material 14 provided between the body part 11 and the anchor hole PH, and for preventing corrosion of the anchor rod 1.SELECTED DRAWING: Figure 10

Description

  The present invention relates to an anchor hole closing member and a method for handling the anchor hole closing member, and more particularly to closing of an anchor hole in which an anchor rod used for lifting a concrete product is embedded.

  Some concrete products such as PC boards (precast concrete) have embedded anchor rods for lifting the concrete products to facilitate construction on site. If the head of the anchor rod protrudes from the surface of the concrete product, the other concrete product may be damaged by the anchor rod, or the work of the worker on site will be disturbed. Therefore, for example, a hemispherical hole (anchor hole) is formed in the concrete product, and an anchor rod is embedded in the anchor hole.

  Here, the anchor rod is necessary when the concrete product is constructed, but is not necessary after the construction is completed. However, if it is left as it is, the steel anchor rod will be rusted by the rainwater collected in the anchor hole, and the concrete product will be damaged.

  Therefore, repair (rust prevention treatment) is carried out in which mortar is applied to the anchor hole to the same height as the surface of the concrete product to protect the anchor rod from rain water.

  In addition, about the technique which lifts a concrete product with an anchor rod, patent document 1 etc. have description, for example.

JP 2004-156376 A

  However, in the rust prevention treatment that applies mortar to the anchor hole, if the anchor hole is on the vertical surface of the concrete product, the worker must apply the mortar in several times, which is very laborious. It was hanging. This tendency was particularly remarkable when the size of the anchor hole was large.

  In addition, concrete products may be stored outdoors until the strength of the concrete product reaches the target value or waiting for shipment. During this time, if the anchor hole is left as it is, the anchor rod will be rusted by rainwater accumulated in the anchor hole. Therefore, it is necessary to carry out rust prevention treatment on the anchor hole, but it takes a long time to carry out rust prevention treatment on a large amount of stored concrete products.

  Furthermore, a concrete product is usually installed at a predetermined location, and may be lifted and moved using an anchor rod when necessary. In order to close the anchor hole of a concrete product that has been completed after assuming such a case in the future, the anchor hole should be easily drilled when the anchor rod is used at a later date. It must be very time-consuming.

  The present invention has been made from the above-described technical background, and an object thereof is to provide an anchor hole closing technique capable of easily performing anchor hole blocking and rust prevention treatment.

  In order to solve the above-mentioned problem, the anchor hole closing member according to the first aspect of the present invention is an anchor hole that is formed in a concrete product and closes an anchor hole in which an anchor rod used for lifting the concrete product is embedded. A closure member, a body portion that can be fitted in the anchor hole, an interference avoidance hole formed in the body portion so as to avoid interference with the anchor rod, and the anchor is attached to the interference avoidance hole. A holding member that engages with a flange formed on the head of the rod to hold the main body in the anchor hole, and is provided between the main body and the anchor hole to prevent corrosion of the anchor rod. And a rust preventive member.

  According to a second aspect of the present invention, the anchor hole closing member according to the first aspect of the present invention is the first communication according to the first aspect, wherein the surface of the main body portion and the interference avoidance hole communicate with each other and the antirust member is injected. It further has a hole.

  The anchor hole closing member according to a third aspect of the present invention is the invention according to the first aspect, further comprising a grip portion provided on the surface of the main body portion, and the anticorrosive member is the whole of the main body portion. It is a water-stopping material that is provided on the periphery and prevents water from entering from the gap between the main body and the anchor hole.

  According to a fourth aspect of the present invention, in the anchor hole closing member of the present invention, in the first aspect of the invention, the surface of the main body portion and the interference avoidance hole are communicated to face the flange portion and a nut is fitted. The rust prevention member further includes: a second communication hole; and a closing bolt that is screw-coupled to the nut and has a tip that is flush with the surface of the main body portion and closes the second communication hole. The fixing member is provided over the entire circumference of the gap between the main body portion and the anchor hole and fixes the main body portion to the anchor hole.

  The handling method of the anchor hole closing member according to the present invention described in claim 5 is the handling method of the anchor hole closing member according to claim 3, wherein the force resists the holding force of the holding member via the grip portion. And the anchor hole closing member closing the anchor hole is removed from the anchor hole.

  A method for handling an anchor hole closing member according to a sixth aspect of the present invention is the method for handling an anchor hole closing member according to the fourth aspect, wherein the second bolt is removed and the second communication is made via the nut. A handle is attached to the hole, and the anchor hole closing member closing the anchor hole is removed from the anchor hole.

  According to a seventh aspect of the present invention, in the method for handling an anchor hole closing member according to the sixth aspect of the present invention, in the invention according to the sixth aspect, the handle has a length that can be screwed into the nut and press the tip of the flange portion. A bolt is provided, and the tip of the flange portion of the anchor rod is pressed with the tip of the pressing bolt to remove the anchor hole closing member from the anchor hole.

  The handling method of the anchor hole closing member of the present invention according to claim 8 is the handling method of the anchor hole closing member according to claim 4, wherein the closing bolt is detached from the nut, and the height adjusting bolt is attached to the nut. The front end of the flange portion of the anchor rod is pressed with the front end of the anchor rod, and the surface of the main body is flush with the surface around the anchor hole. It is characterized by blocking.

  According to the present invention, the holding member attached to the interference avoidance hole formed in the main body portion that can be fitted into the anchor hole engages with the flange portion of the anchor rod, and the main body portion is held in the anchor hole. Since the rust preventive member for preventing the corrosion of the anchor rod is provided between the anchor hole and the anchor hole, the anchor hole can be easily closed and the rust preventive treatment can be performed.

It is a perspective view which shows the anchor rod embedded in the concrete product. It is sectional drawing which shows the anchor rod embedded in the concrete product. It is sectional drawing which shows the state which set the coupler for lifting to the anchor rod embedded in the concrete product. It is a perspective view which shows the concrete product suspended. It is a perspective view which shows the anchor hole obstruction | occlusion member in Embodiment 1 of this invention. It is a top view of the anchor hole obstruction | occlusion member of FIG. It is a side view of the anchor hole obstruction | occlusion member of FIG. FIG. 6 is a bottom view of the anchor hole closing member of FIG. 5. It is sectional drawing which shows the anchor hole obstruction | occlusion member of FIG. 5 from a plane. It is sectional drawing which shows the anchor hole obstruction | occlusion member of FIG. 5 from a side surface with an anchor rod. It is a perspective view which shows the anchor hole obstruction | occlusion member in Embodiment 2 of this invention. It is a top view of the anchor hole obstruction | occlusion member of FIG. It is a side view of the anchor hole obstruction | occlusion member of FIG. It is a bottom view of the anchor hole obstruction | occlusion member of FIG. It is sectional drawing which shows the anchor hole obstruction | occlusion member of FIG. 11 from a plane. It is sectional drawing which shows the anchor hole obstruction | occlusion member of FIG. 11 from a side surface with an anchor rod. It is a perspective view which shows the anchor hole obstruction | occlusion member in Embodiment 3 of this invention. It is a top view of the anchor hole obstruction | occlusion member of FIG. It is a side view of the anchor hole obstruction | occlusion member of FIG. It is a bottom view of the anchor hole obstruction | occlusion member of FIG. It is a perspective view of the leaf | plate spring attached to the anchor hole obstruction | occlusion member of FIG. It is sectional drawing which shows the anchor hole obstruction | occlusion member of FIG. 17 from a side surface with an anchor rod. It is sectional drawing which shows the removal method from the anchor hole of the anchor hole obstruction | occlusion member of FIG. It is sectional drawing which shows the height adjustment method of the anchor hole obstruction | occlusion member of FIG.

  Hereinafter, an embodiment as an example of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

  (Embodiment 1)

  1 is a perspective view showing an anchor rod embedded in a concrete product, FIG. 2 is a cross-sectional view showing the anchor rod embedded in a concrete product, and FIG. 3 is a coupler for lifting the anchor rod embedded in the concrete product. FIG. 4 is a perspective view showing a suspended concrete product, FIG. 5 is a perspective view showing an anchor hole closing member in Embodiment 1 of the present invention, and FIG. 6 is an anchor hole closing member of FIG. FIG. 7 is a side view of the anchor hole closing member of FIG. 5, FIG. 8 is a bottom view of the anchor hole closing member of FIG. 5, and FIG. 9 is a sectional view showing the anchor hole closing member of FIG. 10 is a sectional view showing the anchor hole closing member of FIG. 5 from the side surface together with the anchor rod.

  An anchor rod 1 shown in FIGS. 1 and 2 is made of steel used for lifting a concrete product P, and is formed on a columnar rod body 1a and a head that is one end of the rod body 1a. 2 includes a flange portion 1b to be hooked, and a plate portion 1c formed at the other end of the rod body 1a for increasing the resistance in the pulling direction. The anchor rod 1 is embedded in a hemispherical anchor hole PH formed in the concrete product P in a state where the flange portion 1b protrudes into the anchor hole PH.

  Then, as shown in FIG. 3, when the coupler 2 is hooked on the flange portion 1b of the anchor rod 1, the concrete product P (the sheet pile in the case of illustration) can be lifted by the wire W as shown in FIG. it can.

  When the construction of the concrete product P is completed, the anchor hole PH is closed using the anchor hole closing member 10 shown in FIG.

  Here, the anchor hole closing member 10 in the present embodiment will be described with reference to FIGS.

  The anchor hole closing member 10 shown in these drawings is used when the anchor hole PH is permanently closed. The anchor hole closing member 10 is formed of, for example, a high-hardness mortar and has a main body 11 that can be fitted into the anchor hole PH. Yes. The main body 11 is substantially hemispherical as a whole, and has a shape in which the lower part is cut horizontally when the plane of the main body 11 is turned up.

  The main body 11 is formed with an interference avoidance hole 12 that opens downward so as to avoid interference with the anchor rod 1 when the main body 11 is fitted into the anchor hole PH.

  Inside this interference avoidance hole 12, a leaf spring (holding member) 13 that is engaged with the flange portion 1b of the anchor rod 1 when the main body portion 11 is fitted into the anchor hole PH is attached.

  As shown in FIG. 10, the leaf spring 13 has a substantially U-shape opened downward, and both ends of the central straight portion 13 a slightly curved upward are on both sides of the interference avoidance hole 12. It fits in the recessed part 12a formed in opposition, and is not removed. Further, an engaging portion 13b that is bent obliquely inward from both ends of the straight portion 13a is formed, and when the main body portion 11 is fitted into the anchor hole PH, the engaging portion 13b is elastically deformed. The main body 11 is held in the anchor hole PH by engaging with the flange 1b.

  Further, a grout material (rust preventive member) 14 is injected between the main body 11 and the anchor hole PH (see FIG. 10), and corrosion of the anchor rod 1 is prevented. That is, the anchor hole closing member 10 of the present embodiment is formed with a first communication hole 15 that communicates the surface of the main body 11 and the interference avoidance hole 12, and the grout material 14 is connected to the first communication hole 15. It is injected into the interference avoidance hole 12 through the hole 15. The grout material 14 is also injected into the first communication hole 15, and forms a flat surface that is continuous with the surface of the main body 11.

  Here, as shown in FIGS. 6 and 8, the first communication hole 15 is formed at a position off the center of the interference avoidance hole 12. This is because, if formed in the center of the interference avoidance hole 12, the leaf spring 13 becomes a resistance when the grout material 14 is injected, so that it cannot be smoothly injected. However, if the holding member is not a leaf spring 13 but a wire-working spring (see wire-working spring 33 in FIG. 21 to be described later), there is no problem of resistance at the time of injection. May be formed at the center of the interference avoidance hole 12.

  The grout material 14 is merely an example of a rust preventive member. For example, various members such as an epoxy resin and other curable resin-based fillers can be injected from the first communication hole 15 and have a rust preventive function. Can be used as a rust preventive member.

  Next, occlusion of the anchor hole PH by the anchor hole occlusion member 10 of the present embodiment having the above configuration will be described.

  When the construction of the concrete product P is finished, the anchor hole closing member 10 is fitted into the anchor hole PH. Then, the leaf spring 13 is elastically deformed to engage with the flange portion 1b of the anchor rod 1, and the main body portion 11 is held in the anchor hole PH. Next, after curing with a curing tape, the grout material 14 is injected into the interference avoidance hole 12 from the first communication hole 15 to perform rust prevention treatment, and the closing operation is completed.

  Therefore, the anchor hole PH can be blocked and rust-proofed easily. As a result, even if the anchor hole PH is on the vertical surface of the concrete product P and the size of the anchor hole PH is large, the operator does not have to apply the mortar in several times. Released from.

  (Embodiment 2)

  11 is a perspective view showing an anchor hole closing member according to Embodiment 2 of the present invention, FIG. 12 is a plan view of the anchor hole closing member of FIG. 11, FIG. 13 is a side view of the anchor hole closing member of FIG. 11 is a bottom view of the anchor hole closing member of FIG. 11, FIG. 15 is a sectional view showing the anchor hole closing member of FIG. 11 from a plan view, and FIG. 16 is a sectional view showing the anchor hole closing member of FIG. .

  Here, since the anchor rod 1 embedded in the concrete product P and the lifting of the concrete product P by the anchor rod 1 are the same as those described in the first embodiment, the following third embodiment is included. In the following, the description will be omitted with reference to FIGS. 1 to 4 as appropriate.

  Now, the anchor hole closing member 20 in the present embodiment will be described with reference to FIGS.

  The anchor hole closing member 20 of the second embodiment shown in these drawings is used when temporarily closing the anchor hole PH.

  In a secondary product manufacturing company or production factory, the concrete product P may be stored in an outdoor stock yard for about two weeks to a year until the strength of the concrete product P reaches a target value or waiting for shipment. During this time, if the anchor hole PH is exposed to the atmosphere without being cured, if the anchor hole PH is other than the vertical surface of the concrete product P, water accumulates due to rain or snow, and the anchor rod 1 corrodes. End up. Further, in cold regions, the accumulated water becomes ice, and the coupler 2 cannot be set on the anchor rod 1 unless the ice is removed.

  Therefore, in order to temporarily close the anchor hole PH, the anchor hole closing member 20 shown in the second embodiment is used. When the concrete product P is shipped, the anchor hole closing member 20 is removed.

  Regarding the anchor hole closing member 20 of the present embodiment, the main body 21, the interference avoidance hole 22, and the leaf spring (holding member) 23 have the same configuration and function as the anchor hole closing member 10 of the first embodiment. ing.

  Here, in the anchor hole closing member 20 of the present embodiment, the grip portion 24 is provided on the surface of the main body portion 21.

  That is, a disk-shaped pedestal portion 25 having a larger diameter than the main body portion 21 is provided on the surface of the main body portion 21, and the grip portion 24 is provided via the pedestal portion 25. In the present embodiment, the gripping portion 24 has an arcuate shape erected along the diameter of the pedestal portion 25, and is recessed toward the pedestal portions 25 on both sides so as to be easily held by the operator. 24a is formed. And the main-body part 21, the holding part 24, and the base part 25 are integrally formed mutually.

  Note that the grip portion 24 may be provided directly on the surface of the main body portion 21 without using the pedestal portion 25. Further, the main body 21, the grip 24 and the pedestal 25 may be formed separately and joined with an adhesive or the like.

  Furthermore, the shape of the gripping portion 24 is not limited to that shown in the present embodiment, and it is sufficient if it has a function that allows the operator to grip and lift the main body portion 21. Further, the grip portion 24 may be a member (for example, a steel material or plastic) different from the main body portion 21.

  In order to prevent corrosion of the anchor rod 1, a water stop material (rust prevention member) 26 that prevents water from entering through the gap between the main body 21 and the anchor hole PH is provided on the entire circumference of the main body 21. ing. In the present embodiment, the water-stopping material 26 is a foamable water-stopping material mainly composed of a hydrophilic urethane resin that foams when it comes into contact with water and cures as it is in a place where there is no water. However, the water stop material 26 may be other than the foam water stop material such as rubber packing.

  In the present embodiment, the water stop material 26 is attached to the lower surface of the pedestal portion 25 and goes around the main body 21, but may be directly attached to the main body 21.

  Next, the closing of the anchor hole PH by the anchor hole closing member 20 of the present embodiment having the above-described configuration will be described.

  When the manufactured concrete product P is transported to a predetermined stockyard such as outdoors, the anchor hole closing member 20 is fitted into the anchor hole PH and is held in the anchor hole PH. At this time, the water stop material 26 is brought into close contact with the edge of the anchor hole PH by the holding force of the leaf spring 23, so that intrusion of rainwater or the like is prevented.

  Therefore, even with the anchor hole closing member 20 of the second embodiment, the anchor hole PH can be easily closed and rust-proofed.

  Further, for example, the rust prevention treatment of the anchor holes PH formed in a large amount of the concrete product P stored outdoors can be easily performed in a short time.

  When the anchor hole closing member 20 is removed in order to ship the concrete product P, a force against the holding force of the leaf spring 23 is applied through the grip portion 24. Thereby, the leaf | plate spring 23 elastically deforms, the engagement with the said leaf | plate spring 23 and the flange part 1b of the anchor rod 1 is cancelled | released, and the anchor hole obstruction | occlusion member 20 can be removed from the anchor hole PH.

  (Embodiment 3)

  17 is a perspective view showing an anchor hole closing member according to Embodiment 3 of the present invention, FIG. 18 is a plan view of the anchor hole closing member of FIG. 17, FIG. 19 is a side view of the anchor hole closing member of FIG. 17 is a bottom view of the anchor hole closing member of FIG. 17, FIG. 21 is a perspective view of a leaf spring attached to the anchor hole closing member of FIG. 17, and FIG. 22 is a sectional view of the anchor hole closing member of FIG. 23 is a cross-sectional view showing a method for removing the anchor hole closing member of FIG. 17 from the anchor hole, and FIG. 24 is a cross-sectional view showing a method for adjusting the height of the anchor hole closing member of FIG.

  The anchor hole closing member 30 in the present embodiment is used when closing the anchor hole PH of the anchor rod 1 that is used irregularly.

  For example, concrete products P used in machine hatches (openings such as floors provided for carrying in equipment) are usually installed at predetermined locations, and when equipment needs to be brought in The anchor rod 1 is used for lifting and moving from the installation position.

  Therefore, in order to close the anchor hole PH formed in the concrete product P in such a usage form, the anchor hole closing member 30 shown in the third embodiment is used. When the equipment has been carried in, the concrete product P is returned to a predetermined location, and the anchor hole PH is closed again with the anchor hole closing member 30.

  Regarding the anchor hole closing member 30 of the present embodiment, the main body 31 and the interference avoidance hole 32 have the same configuration and function as the anchor hole closing member 10 of the first embodiment. As for the holding member attached to the interference avoidance hole 32, the leaf springs (leaf springs 13 and 23) are used in the first and second embodiments, but in this embodiment, FIG. As shown, a wire-working spring 33 (which can obtain a spring action by bending a steel wire such as a wire) is used. The shape of the wirework spring 33 is a shape that does not interfere with a bolt 40a of the handle 40 and a height adjustment bolt 41 described later.

  In the present embodiment, the peripheral edge portion of the main body portion 31 is chamfered (location indicated by reference numeral C1 in FIGS. 17 to 19 and FIGS. 22 to 24). This is to secure a space for injecting a fixing material such as a caulking material, which will be described in detail later.

  As shown in detail in FIGS. 19 and 22, the anchor hole closing member 30 of the present embodiment has a second communication hole 35 that communicates the surface of the main body 31 and the interference avoidance hole 32. And is formed on the same axis. Therefore, when the anchor hole closing member 30 is fitted into the anchor hole PH, the second communication hole 35 is positioned to face the flange portion 1 b of the anchor rod 1.

  A hexagonal nut (nut) 34 is fitted into the interference avoidance hole 32 side of the second communication hole 35. The hexagon nut 34 is formed with a flange to prevent the hexagon nut 34 from coming off from the second communication hole 35. However, the nut is not limited to the hex nut 34, and various nuts can be applied. Moreover, the flange does not need to be formed.

  The peripheral edge portion of the second communication hole 35 is chamfered obliquely (location indicated by reference numeral C2 in FIGS. 18, 19, and 22 to 24).

  As shown in FIG. 22, a countersunk bolt (blocking bolt) 36 is screwed to the hexagon nut 34, thereby closing the second communication hole 35. At this time, the head of the countersunk bolt 36 is fitted into the chamfered portion of the peripheral edge of the second communication hole 35 described above, so that the tip of the countersunk bolt 36 is flush with the surface of the main body 31. . A groove may be formed along the second communication hole 35 so that the expanded air in the anchor hole PH is allowed to escape.

  A bolt other than the countersunk bolt 36 may be used, and chamfering is unnecessary if the same surface as the surface of the main body 31 can be formed without chamfering the peripheral edge of the second communication hole 35. . As shown in FIG. 17, the hole in the head of the countersunk bolt 36 has a + (plus) shape, but is not limited thereto, and may be, for example, a − (minus) shape or a hexagonal shape.

  As shown in FIG. 22, in order to prevent the corrosion of the anchor rod 1 by preventing the intrusion of water or moisture into the gap between the main body 31 of the anchor hole closing member 30 and the anchor hole PH, In order to fix the main body 31 of the hole closing member 30 to the anchor hole PH of the concrete product P, a caulking material (rust preventive member) 37 as a fixing material is injected over the entire circumference. And the caulking adhesion strength for hold | maintaining the main-body part 31 to the anchor hole PH is ensured by inject | pouring a caulking material into the space formed by the chamfering of the peripheral part of the main-body part 31. In addition, since the chamfering of the main body 31 is for convenience when pouring the caulking material, the chamfering may not be performed.

  Next, the closing and opening of the anchor hole PH by the anchor hole closing member 30 of the present embodiment having the above configuration will be described.

  When the construction of the concrete product P (in the third embodiment, the concrete product P is irregularly moved from the installation position and the anchor rod 1 is used at that time) is finished, the anchor hole PH is anchored. The hole closing member 30 is fitted and held in the anchor hole PH. Next, the caulking material 37 is injected into the gap between the main body 31 and the anchor hole PH (see FIG. 22). Thus, the anchor hole PH is stopped and fixed, and the closing is completed.

  Then, when opening the anchor hole PH in order to move the concrete product P, first, the countersunk bolt 36 closing the second communication hole 35 is removed. And the handle | steering-wheel 40 provided with the volt | bolt (pressing volt | bolt) 40a is attached there, as shown in FIG. The bolt 40a can be screw-coupled with the hexagon nut 34 and has a length capable of pressing the tip of the flange portion 1b of the anchor rod 1.

  Therefore, when the handle 40 is turned and the bolt 40 a is screwed in, the tip of the bolt 40 a presses the tip of the flange portion 1 b of the anchor rod 1. Then, by this pressing force, the wirework spring 33 is elastically deformed to release the engagement with the flange portion 1b of the anchor rod 1, and the anchor hole closing member 30 is fixed to the anchor hole PH while the caulking material 37 is broken. From the surface.

  Therefore, the anchor hole closing member 30 can be easily removed, and the anchor hole PH is opened.

  The anchor hole closing member 30 can be reused by removing the previous caulking material 37, fitting the removed anchor hole closing member 30 into the anchor hole PH, and injecting the caulking material 37 again. is there.

  Here, when the anchor hole closing member 30 is removed, the handle 40 can be attached and pulled out from the anchor hole PH without cutting the caulking material 37 with a knife or the like. In this case, since the bolt provided on the handle 40 does not need to press the flange portion 1b, the handle 40 is connected to the second communication hole via the hexagon nut 34 by a length that allows screw connection with the hexagon nut 34. Any length that can be attached to 35 is acceptable. Furthermore, since it is not necessary for the bolt at this time to reach the flange portion 1b, it is not necessary to consider interference with the wire work spring 33 as a holding member directly above the flange portion 1b. (Leaf springs 13, 23) can be used.

  The caulking material 37 is an example of a rust prevention member having a fixing function, and has a function of preventing the anchor rod 1 from being corroded and fixing the main body 31 of the anchor hole closing member 30 to the anchor hole PH of the concrete product P. If it has, you may use another member. In the present embodiment, the shape of the handle 40 is T-shaped, but the present invention is not limited to this shape, and various shapes such as a shape aligned with the bolt 40a can be applied. Of course.

  The anchor hole closing member 30 of the third embodiment can also easily perform the blocking of the anchor hole PH and the rust prevention treatment.

  Further, if the countersunk bolt 36 is removed from the second communication hole 35 and the handle 40 is attached, the anchor hole closing member 30 can be removed from the anchor hole PH. Therefore, when the anchor rod 1 is used at a later date, the anchor hole PH is used. The anchor hole PH can be closed in a state where it can be easily opened.

  Here, a case where the surface of the main body 31 of the anchor hole closing member 30 is lower than the surface around the anchor hole PH when the anchor hole closing member 30 is fitted into the anchor hole PH is conceivable. Therefore, in the anchor hole closing member 30 of the third embodiment, height adjustment is possible assuming such a case.

  That is, as shown in FIG. 24, the countersunk bolt 36 is removed from the hex nut 34, and the height adjustment bolt 41 is screwed into the hex nut 34. The height adjustment bolt 41 is also of a length that can press the tip of the flange portion 1b of the anchor rod 1 in the same manner as the bolt 40a provided on the handle 40 described above. Therefore, the tip of the flange portion 1b is pressed with the tip of the height adjusting bolt 41 and screwed in until the surface of the main body portion 31 has the same height as the surface around the anchor hole PH. Then, when the heights of both of them are the same, the caulking material 37 is injected, and when the caulking material 37 is cured, the height adjusting bolt 41 is removed and the countersunk bolt 36 is screwed to close the second communication hole 35. To do.

  When the height of the anchor hole closing member 30 is not adjusted, interference with the wire work spring 33 as the holding member by the height adjusting bolt 41 does not have to be taken into consideration. (Leaf springs 13, 23) can be used.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the embodiment disclosed in this specification is an example in all respects and is limited to the disclosed technology. It is not a thing. That is, the technical scope of the present invention should not be construed restrictively based on the description in the above-described embodiment, but should be construed according to the description of the scope of claims. All modifications are included without departing from the technical scope equivalent to the described technique and the gist of the claims.

  For example, although the anchor hole PH in the embodiment described above is hemispherical, it is not limited to a hemispherical shape, and may be various other shapes.

  Therefore, the main body portions 11, 21, 31 of the anchor hole closing members 10, 20, 30 corresponding to this need not have a generally hemispherical shape and the lower portion is cut horizontally, and the anchor holes PH are not formed. It is sufficient if it can be fitted.

  The anchor hole closing member according to the present invention can be applied to close anchor holes formed in concrete products having various shapes.

DESCRIPTION OF SYMBOLS 1 Anchor rod 1a Rod main body 1b Flange part 1c Plate part 2 Coupler 10 Anchor hole obstruction | occlusion member 11 Main body part 12 Interference avoidance hole 12a Recessed part 13 Leaf spring (holding member)
13a Linear part 13b Engaging part 14 Grout material (rust prevention member)
15 1st communicating hole 20 Anchor hole obstruction | occlusion member 21 Main-body part 22 Interference avoidance hole 23 Leaf spring (holding member)
24 Grasping part 25 Pedestal part 26 Water stop material (rust prevention member)
30 Anchor hole blocking member 31 Body 32 Interference avoidance hole 33 Wirework spring (holding member)
34 Hex Nut (Nut)
35 Second communication hole 36 Countersunk bolt (blocking bolt)
37 Caulking materials (fixing materials and rust prevention materials)
40 Handle 40a Bolt (Pressing bolt)
41 Height adjustment bolt C1 Chamfer C2 Chamfer P Concrete product PH Anchor hole

Claims (8)

An anchor hole closing member that closes an anchor hole formed in a concrete product and embedded with an anchor rod used for lifting the concrete product,
A body portion that can be fitted into the anchor hole;
An interference avoidance hole formed in the main body so as to avoid interference with the anchor rod;
A holding member attached to the interference avoidance hole and engaged with a flange portion formed on a head portion of the anchor rod to hold the main body portion in the anchor hole;
A rust preventive member provided between the main body portion and the anchor hole to prevent corrosion of the anchor rod;
An anchor hole closing member comprising: The surface of the main body and the interference avoidance hole communicate with each other, and further includes a first communication hole into which the rust preventive member is injected,
The anchor hole closing member according to claim 1. It further has a grip portion provided on the surface of the main body,
The rust preventive member is a water stop material that is provided on the entire circumference of the main body portion and prevents water from entering from the gap between the main body portion and the anchor hole.
The anchor hole closing member according to claim 1. A second communication hole that communicates the surface of the main body portion with the interference avoidance hole to face the flange portion and is fitted with a nut;
A screw that is screw-coupled to the nut, and further has a closing bolt that closes the second communication hole with the tip being flush with the surface of the body portion;
The rust prevention member is a fixing material that is provided over the entire circumference of the gap between the main body portion and the anchor hole, and fixes the main body portion to the anchor hole.
The anchor hole closing member according to claim 1. A method for handling an anchor hole closing member according to claim 3,
Applying a force against the holding force of the holding member through the grip portion, and removing the anchor hole closing member closing the anchor hole from the anchor hole,
A method for handling an anchor hole closing member. A method for handling an anchor hole closing member according to claim 4,
Removing the closing bolt, attaching a handle to the second communication hole via the nut, and removing the anchor hole closing member closing the anchor hole from the anchor hole;
A method for handling an anchor hole closing member. The handle is provided with a pressing bolt of a length that can be screwed into the nut and press the tip of the flange portion,
Pressing the tip of the flange portion of the anchor rod with the tip of the pressing bolt to remove the anchor hole closing member from the anchor hole;
The handling method of the anchor hole obstruction | occlusion member of Claim 6 characterized by the above-mentioned. A method for handling an anchor hole closing member according to claim 4,
Remove the closing bolt from the nut, screw the height adjustment bolt into the nut, and press the tip of the flange portion of the anchor rod with the tip of the bolt, and the surface of the main body portion is the surface around the anchor hole. The anchor hole is closed with the anchor hole closing member at the same height,
A method for handling an anchor hole closing member.

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