JP6968500B2 - Anchor drive rod and post-installed anchor installation structure - Google Patents

Description

The present invention relates to post-installed anchors for concrete, particularly anchor bolts and post-installed anchor installation structures used for driving post-installed anchors after the expansion sleeve driving type.

Conventionally, there is a driving rod of Patent Document 1 as an anchor driving rod used for driving a construction anchor into a concrete structure and managing the construction state after the expansion sleeve driving type. The driving rod of Patent Document 1 is described as having a bottomed cylindrical body in which a striking receiving surface is provided at the rear end and the tip is driven into the rear end of the expansion sleeve, and extending in the longitudinal direction of the cylinder. It has a scale and an opening formed along the scale in the vicinity of the notation range of the scale.

Then, after being placed in the perforation of the concrete structure by this driving rod, the expansion sleeve of the construction anchor is driven to expand it, and the rear end surface of the taper bolt of the post-installed anchor is visually recognized from the opening to be in the expanded state. Measure and confirm the bolt protrusion length, which is the distance from the rear end of the expansion sleeve to the rear end surface of the tapered bolt. As a result, the state of entry of the expansion sleeve into the taper bolt, in other words, the proper expansion state of the expansion sleeve is confirmed, and the construction state is managed.

Japanese Unexamined Patent Publication No. 2017-145552

By the way, in this kind of expansion sleeve driving type post-installed anchor, the diameter of the expansion sleeve according to the taper bolt and the length of the expansion sleeve, particularly the embedding of the expansion sleeve corresponding to the length of the expansion sleeve. The length is not fixed uniformly. Therefore, as shown in FIG. 19, for example, expansion sleeves 102a and 102b having the same outer diameter D but different lengths L1 and L2 are exteriorized and expanded with respect to the taper bolt 101 having the same shape and size. In some cases, the sleeves 102a and 102b are driven into the concrete structure 103 and expanded, and are driven into the concrete structure 103 with embedded lengths corresponding to different lengths L1 and L2. In order to deal with such a situation and manage the proper construction condition, the proper anchor was placed both at the time of driving the construction anchor after the expansion sleeve driving type and after the driving. , It is required to be able to confirm that the construction condition is appropriate.

In the construction management using the driving rod of Patent Document 1, since the enforcer who has driven the construction anchor after the expansion sleeve driving type recognizes what kind of expansion sleeve has been driven, the construction is performed at the time of driving. Immediately after that, it is possible to confirm that the proper anchor was placed and that the proper construction was performed. However, even if the manager confirms the bolt protrusion length of the installed anchor after the anchor is placed, the manager cannot recognize what kind of expansion sleeve was driven later, so the proper anchor is hit after the anchor is placed. It is difficult to confirm whether the anchor has been installed, and it is not possible to confirm that the proper anchor has been installed both at the time of anchor placement and after the anchor has been placed.

The present invention is proposed in view of the above problems, and it is possible to confirm that an appropriate anchor is placed both at the time of placing the anchor and after the setting, and that the construction state is appropriate. It is an object of the present invention to provide an anchor driving rod and a post-installed anchor installation structure.

The anchor driving rod of the present invention is an anchor driving rod for driving an expansion sleeve post-installed anchor in which an expansion sleeve is attached to a tapered bolt, and a striking receiving surface is provided at the rear end. At the same time, it has a bottomed tubular body whose tip is driven into the rear end of the expansion sleeve, and a stamped portion for forming a mark by a hit mark that has been properly driven into the post-installed anchor is provided on the cylinder, and the proper driving is performed. It is characterized in that the engraved portion is formed so that the engraving by the completed impact mark indicates the type of the expansion sleeve of the post-installed anchor.
According to this, the marking by the properly driven impact mark by the stamped part indicates the type of the expansion sleeve of the post-installed anchor, and this marking is appropriate for the installer and the manager both at the time of placing the anchor and after placing it. It can be confirmed that various anchors have been installed. In addition, the installer and the manager can confirm that the anchor construction condition is appropriate both at the time of placing the anchor and after the anchor is placed by the marking made by the properly driven impact mark by the marking portion. Therefore, appropriate construction management can be performed both at the time of placing the anchor and during the period after the placement is completed. In addition, by forming an engraving with an anchor driving rod, it is possible to lower the overall construction cost compared to the case where individual anchors are pre-engraved and shipped. It is possible to reduce the construction cost of construction that involves installation.

The anchor driving rod of the present invention is characterized in that the support portion of the engraved portion is detachably provided in the tubular body.
According to this, the engraved portion can be replaced by exchanging the support portion of the engraved portion, and when the engraved portion and the support portion are worn by the impact, the engraved portion can be easily replaced. Further, even when the constituent members of the cylinder other than the support portion of the engraved portion are worn by the impact, they can be easily replaced. Further, it can be adapted by exchanging with the corresponding engraved portion according to the type of the expansion sleeve.

The anchor driving rod of the present invention is characterized in that the engraved portion is provided at the tip of the tubular body to be driven into the rear end of the expansion sleeve of the post-installed anchor.
According to this, the type of the extended sleeve of the post-installed anchor can be easily recognized by the marking on the rear end of the expanded sleeve that has been expanded and placed.

The anchor driving rod of the present invention is characterized in that the engraved portion is provided at the bottom of the tubular body to be driven into the rear end of the taper bolt of the post-installed anchor.
According to this, it is possible to easily recognize the type of the expanded sleeve of the post-installed anchor by engraving the rear end of the taper bolt of the post-installed anchor after the expanded sleeve is expanded and placed. can.

The anchor driving rod of the present invention is provided with a marking member having the marking portion at the tip screwed to the bottom portion, and by adjusting the screwing amount of the marking member in the longitudinal direction of the cylinder of the marking portion. The feature is that the position is adjustable. That is, the anchor driving rod of the present invention is an anchor driving rod for driving an expansion sleeve post-installed anchor in which the expansion sleeve is externally mounted on a taper bolt, and has a striking receiving surface at the rear end. It has a bottomed tubular body whose tip is driven into the rear end of the expansion sleeve, and the stamped part for forming a mark by the hit mark that has been properly driven into the post-installed anchor is the taper bolt of the post-installed anchor. The engraved portion is provided at the bottom of the cylinder to be driven into the rear end, and the engraved portion is formed so that the engraving by the properly driven impact mark indicates the type of the expansion sleeve of the post-installed anchor, and the engraved portion is formed. A marking member having an anchor bolt at the tip thereof is provided by being screwed into the bottom portion, and the position of the marking portion in the longitudinal direction of the cylinder body can be adjusted by adjusting the screwing amount of the marking member, which is preferable. The bottom portion corresponding to the support portion of the engraved portion is detachably provided in the cylinder.
According to this, the amount of screwing to the bottom of the engraved member is adjusted, and the position of the engraved portion is adjusted and positioned at a position where an appropriate proper imprinted impact mark can be engraved by the rear end of the taper bolt. can do. Therefore, for example, even if it is necessary to make the penetration amount of the expansion sleeve slightly different due to the difference in concrete strength of the concrete structure, the position of the engraved portion is adjusted to an appropriate position to ensure appropriateness. It is possible to form an engraving with a hit mark that has already been driven.

In the post-installed anchor installation structure of the present invention, the expansion sleeve is mounted on a taper bolt, and the expansion sleeve is driven into the concrete structure. The post-installed anchor is characterized in that the stamp is formed on the post-installed anchor by the properly driven impact mark of the anchor driving rod of the present invention.
According to this, the installer and the manager can recognize the type of the expansion sleeve of the post-installed anchor by the marking by the hit mark that has been properly driven, and the installer and the manager can recognize the type of the expansion sleeve of the post-installed anchor at the time of and after the anchor is placed. It can be confirmed that proper anchors are installed on both sides. In addition, the builder and manager can confirm that the construction condition of the anchor is appropriate both at the time of driving the anchor and after the anchor is driven by the marking by the hit mark that has been properly driven. Therefore, appropriate construction management can be performed both at the time of placing the anchor and during the period after the placement is completed. In addition, by forming an engraving with an anchor driving rod, it is possible to lower the overall construction cost compared to the case where individual anchors are pre-engraved and shipped. It is possible to reduce the construction cost of construction that involves installation.

The post-installed anchor installation structure of the present invention is characterized in that the marking is formed at the rear end of the taper bolt and is exposed.
According to this, since the engraving is exposed, the installer and the manager can visually recognize the engraving as it is without any special work. Therefore, the builder and the manager can confirm the appropriateness of the anchor and the construction state very easily, and the construction management work can be made more efficient.

According to the present invention, it is possible to confirm that an appropriate anchor is placed both at the time of placing the anchor and after the placement, and that the construction state is appropriate. Therefore, appropriate construction management can be performed both at the time of placing the anchor and during the period after the placement is completed.

(A) is a perspective view of the anchor driving rod of the first embodiment according to the present invention, (b) is a front view thereof, (c) is a side view thereof, and (d) is a vertical sectional view thereof. (A) is a side view of an extended sleeve driven post-installed anchor that is driven by the anchor driving rod of the first embodiment, (b) is a vertical sectional view thereof, and (c) is the same figure (b). AA cross-sectional view of. (A) to (d) are explanatory views showing the construction procedure of driving the construction anchor after the expansion sleeve driving type with the anchor driving rod of the first embodiment. A perspective explanatory view showing a post-installed anchor installation structure according to the first embodiment. A perspective explanatory view showing a state in which a post-installed anchor installation structure according to the first embodiment is installed side by side with an existing post-installed anchor installation structure. (A) is a perspective view of the anchor driving rod of the modified example of the first embodiment, (b) is a front view thereof, (c) is a side view thereof, and (d) is a vertical sectional view thereof. (A) is a perspective view of the anchor driving rod of the second embodiment according to the present invention, (b) is a front view thereof, (c) is a side view thereof, (d) is a vertical sectional view thereof, and (e) is the same. BB sectional view of FIG. (C). (A) is an exploded side view of the anchor driving rod of the second embodiment, and (d) is an exploded vertical sectional view thereof. (A) to (d) are explanatory views showing the construction procedure of driving the construction anchor after the expansion sleeve driving type with the anchor driving rod of the second embodiment. (A) and (b) are perspective explanatory views showing the post-installed anchor installation structure of the second embodiment. A perspective explanatory view showing a state in which the post-installed anchor installation structure of the second embodiment is installed side by side with the existing post-installed anchor installation structure. (A) is a side view of the anchor driving rod of the modified example of the second embodiment, and (b) is a vertical sectional view thereof. (A) is a side view of an extended sleeve driving type post-installed anchor to be driven by an anchor driving rod of a modified example of the second embodiment, and (b) is a vertical sectional view thereof. (A) to (d) are explanatory views showing the construction procedure of driving the construction anchor after the expansion sleeve driving type with the anchor driving rod of the modified example of the second embodiment. (A) and (b) are perspective explanatory views showing the construction anchor installation structure after the modification of the second embodiment. (A) is a front view of the anchor driving rod of the third embodiment according to the present invention, (c) is a side view thereof, and (d) is a vertical sectional view thereof. (A) is an exploded side view of the anchor driving rod of the third embodiment, and (d) is an exploded vertical sectional view thereof. Explanatory drawing which shows the construction procedure of driving the construction anchor after the expansion sleeve driving type with the anchor driving rod of the 3rd embodiment. Explanatory drawing which shows the state which the construction anchor was placed after the expansion sleeve driving type which the length of the conventional expansion sleeve is different.

[Anchor driving rod and post-installed anchor installation structure of the first embodiment]
The anchor driving rod 10 of the first embodiment according to the present invention is an anchor driving rod for driving an extended sleeve post-installed anchor, and as shown in FIG. 1, a bottomed tubular body. It is composed of 11. The tubular body 11 in the illustrated example has a bottomed cylindrical shape, and has a thick bottom portion 12 having a thickness of about 1/3 of the length of the tubular body 11 and a peripheral wall portion 13 provided on the tip end side of the bottom portion 12. , Has a hollow portion 14 provided inside the peripheral wall portion 13. The hollow portion 14 is formed with a length capable of accommodating a protruding portion protruding from the concrete surface 63 of the taper bolt at an appropriate length when the expansion sleeve of the post-installed anchor is driven. The rear end of the bottom portion 12, which is the rear end of the cylinder 11, is the impact receiving surface 15, and the tip of the peripheral wall portion 13 which is the tip of the cylinder 11 is the impact surface 16 which is driven into the rear end of the expansion sleeve. It has become.

The striking surface 16 which is the tip of the cylinder 11 is provided with a stamped portion 17 for forming a stamp by the properly stamped striking mark on the post-installed anchor, and the stamped portion 17 is later stamped by the properly stamped striking mark. It is formed to indicate the type of expansion sleeve of the construction anchor. The engraved portion 17 of the present embodiment is formed in a substantially circular shape in a front view and protrudes toward the tip side, and in this example, is formed in a substantially hemispherical protrusion shape. There are multiple spaces in the circumferential direction. The number of the protruding engraved portions 17 corresponds to the type of the expanded sleeve of the post-installed anchor, and the rear end of the expanded sleeve formed by the impact of the protruding engraved portions 17 is properly driven. The engraving by the completed impact marks indicates the type of the expansion sleeve of the post-installed anchor.

The extended sleeve driving type post-installed anchor driven by the anchor driving rod 10 of the first embodiment is, for example, a metal post-installed anchor 50 as shown in FIG. 2, and the post-installed anchor 50 is a taper bolt 51. The structure is such that the expansion sleeve 52 is exteriorized. The taper bolt 51 has a screw shaft portion 512 in which a thread groove is formed, a columnar shaft portion 513, and a substantially conical shape formed so as to taper toward the tip in order from the rear end surface 511. The diameter-expanded portion 514 is provided.

The expansion sleeve 52 is formed in a substantially cylindrical shape in the non-expansion state, and is mainly attached to the outside of the screw shaft portion 512 and the shaft portion 513 of the taper bolt 51 in the non-expansion state. The expansion sleeve 52 includes a sleeve main body 522 and an expansion portion 523 provided on the tip end side of the sleeve main body 522 in order from the rear end surface 521. The expansion portion 523 is divided into a plurality of pieces by a slit 524 cut from the tip of the expansion sleeve 52 to the sleeve main body 522, and is formed in a piece shape. In the expansion sleeve 52 of the illustrated example, four slits 524 are formed, and four piece-shaped expansion portions 523 are provided. Further, on the outer surface of the expansion portion 523, a plurality of arcuate grooves 525 extending in the circumferential direction are formed side by side in the longitudinal direction of the expansion sleeve 52 in order to facilitate expansion deformation.

When the non-expanded sleeve 52 is driven toward the enlarged diameter portion 514 of the taper bolt 51, the expanded portion 523 of the expanded sleeve 52 expands following the enlarged diameter portion 514 of the post-installed anchor 50. However, it is configured to be in an expanded state. The type of the expansion sleeve 52 is a type indicated by the number of protrusion-shaped marking portions 17 of the anchor driving rod 10. In the examples of FIGS. 1 and 2, three protrusion-shaped marking portions are used. The length L of the expansion sleeve 52, which corresponds to the embedding length of the expansion sleeve 52, is tripled or tripled with respect to the outer diameter D of the expansion sleeve 52, which is indicated by the markings of 17 and its properly driven impact marks. It is the expansion sleeve 52 of the above standard product.

When the post-installed anchor 50 is constructed using the anchor driving rod 10 of the first embodiment, as shown in FIG. 3A, the concrete structure 60 is drilled with a predetermined diameter and a predetermined drilling depth 61. And clean the inside of the perforation 61. The depth of the perforation 61 in this example is substantially the same as the length of the expansion sleeve 52 of the post-installed anchor 50. After that, as shown in FIG. 3B, the post-installed anchor 50 is inserted into the drilling 61, and after the insertion, the post-installed anchor 50 is extrapolated to the screw shaft portion 512 located at the rear of the taper bolt 51 of the construction anchor 50. The anchor driving rod 10 is covered, and the striking surface 16 at the tip of the anchor driving rod 10 is arranged in close proximity to or in contact with the rear end surface 521 of the expansion sleeve 52.

Then, as shown in FIG. 3C, for example, by striking the impact receiving surface 15 of the anchor driving rod 10 with a hammer 41 by the manual force of an operator, the impact surface 16 of the anchor driving rod 10 is expanded and sleeved. The expansion sleeve 52 is driven into the rear end surface 521 of the 52 in the hole depth direction with respect to the taper bolt 51. The expanded portion 523 of the expanded sleeve 52 driven toward the expanded diameter portion 514 of the taper bolt 51 is expanded following the expanded diameter portion 514, and the expanded expanded portion 523 is a hole wall of the concrete structure 60. It is pressed against 62 and the post-installed anchor 50 is mechanically fixed to the concrete structure 60.

At this time, the post-installed anchor 50 is driven and driven until the expansion sleeve 52 is inserted into the perforation 61 over the entire length, and the expansion sleeve 52 is driven with an embedded length corresponding to its length L. Will be done. In this driving process, the expansion sleeve 52 is driven by the anchor driving rod 10 with a small resistance at the beginning of driving, but when the expanding portion 523 starts to expand, the driving resistance increases and the proper expansion state is achieved. When the embedding length becomes appropriate, the expansion sleeve 52 does not advance any further, and the protrusion-shaped engraved portion 17 of the anchor driving rod 10 is recessed into the rear end surface 521 of the expansion sleeve 52, and the expansion sleeve 52 is properly driven into the rear end surface 521. A marking 53 is formed by the completed impact marks (see FIG. 3D, FIGS. 4 and 5). The stamp 53 indicates the type of the expansion sleeve 52 of the construction anchor 50 after being placed. It is preferable that the depth of the marking 53 is 0.3 to 0.5 mm.

By the above-mentioned construction process, the post-installed anchor 50 expands the expansion sleeve 52 and is placed in the concrete structure 60, and in other words, the post-installed anchor 50 is placed in the installed expansion sleeve 52. In addition, a post-installed anchor installation structure is constructed according to the first embodiment in which the stamp 53 formed by the properly driven impact marks of the anchor driving rod 10 is formed (see FIGS. 3 (d) and 4). The post-installed anchor installation structure according to the first embodiment can be installed side by side with the existing post-installed anchor installation structure formed by driving the existing post-installed anchor 105 after the expansion sleeve driving type. Post-installed anchor installation structure can be added to the post-installed anchor installation structure according to the first embodiment (see FIG. 5).

Then, for example, as shown in FIGS. 3 (d) and 4, the attachment 71 is externally inserted into the screw shaft portion 512 protruding from the concrete surface 63 of the construction anchor 50 after being properly placed on the concrete structure 60. Further, a washer 72 and a spring washer 73 having an anti-loosening function are externally inserted in order on the outside thereof, and the nut 74 is screwed to attach the attachment 71 to the concrete structure 60.

The engraved portion 17 in the anchor driving rod 10 of the first embodiment is formed in a substantially hemispherical protruding shape to be a hard-to-break engraved portion 17, but the shape of the protruding engraved portion in the present invention is this. Not limited. For example, as shown in FIG. 6, a substantially rectangular parallelepiped protruding engraved portion 17a that is hard to be crushed is provided, and a plurality of engraved portions 17a are provided at intervals in the circumferential direction of the tubular body 11, and the number of the protruding engraved portions 17a is increased. It may correspond to the type of the expansion sleeve of the construction anchor.

According to the first embodiment, the marking 53 by the properly driven impact marks by the marking portions 17 and 17a indicates the type of the expansion sleeve 52 of the post-installed anchor 50, and the installer and the manager can hit the anchor by this marking 53. It can be confirmed that proper anchors are installed both at the time of installation and after installation. Further, the marking 53 is formed for the first time by the marking portions 17 and 17a by properly driving the post-installed anchor 50, and the marking 53 allows the installer and the manager to perform both during and after the anchor is placed. It can be confirmed that the construction condition of the anchor is appropriate. Therefore, appropriate construction management can be performed both at the time of placing the anchor and during the period after the placement is completed. Further, by forming the engraved 53 with the anchor driving rod 10, it is possible to lower the overall construction cost as compared with the case where each anchor is pre-engraved and shipped, and the construction is performed after the expansion sleeve driving type. It is possible to reduce the construction cost of construction that involves the installation of anchors. In addition, the type of the expanded sleeve 52 of the post-installed anchor 50 can be easily recognized by the marking on the rear end of the expanded sleeve 52 that has been expanded and placed.

[Anchor driving rod and post-installed anchor installation structure of the second embodiment]
The anchor driving rod 20 of the second embodiment according to the present invention is also an anchor driving rod for driving an extended sleeve post-installed anchor, and as shown in FIG. 7, it is a bottomed tubular body. It is composed of 21. The tubular body 21 of the illustrated example has a substantially cylindrical shape with a bottom, and has a tubular portion 22 having a substantially cylindrical shape and penetrating the inside, and a bottom portion 26 provided on the rear side of the tubular portion 22 (see FIGS. 7 and 8). ). The tip of the cylinder 22 corresponding to the tip of the cylinder 21 is a striking surface 23 to be driven into the rear end of the expansion sleeve, and a notch 221 for hooking a spanner is provided at a predetermined position on the outer peripheral surface of the cylinder 22. Is formed. A hollow portion 24 is provided inside the tubular portion 22, and a female screw portion 25 is formed inside the rear portion of the tubular portion 22. The hollow portion 24 has a length that can accommodate a protruding portion protruding from the concrete surface 63 of the taper bolt at an appropriate length when the expansion sleeve of the post-installed anchor is driven in, and the taper portion is accommodated by the engraved portion 291 described later. It is formed with a length that can be engraved on the rear end of the bolt.

The bottom portion 26 has a substantially columnar base portion 27, and a notch 271 for hooking a spanner is formed at a predetermined position on the outer peripheral surface of the base portion 27, and the base portion 27 is arranged at the rear end of the tubular body 21. The rear end is a hit receiving surface 272. A male screw portion 28 is provided on the tip end side of the base portion 27, and a substantially cylindrical small diameter portion 29 having a diameter smaller than that of the base portion 27 and the male screw portion 28 is provided so as to project from the male screw portion 28 to the tip end side. There is. At the tip of the small-diameter portion 29, a marking portion 291 for forming a marking by a hit mark that has been properly driven into the post-installed anchor is formed so as to project toward the tip side. The engraved portion 291 is formed by numbers, letters, or a predetermined number of protrusions, etc. so that the engraving by the properly driven impact marks indicates the type of the expansion sleeve of the post-installed anchor, and the numbers are formed in the shape of a relief in the illustrated example. Has been done.

The bottom portion 26 corresponding to the support portion that supports the engraved portion 291 is detachably provided in the tubular body 21, for example, by engaging the spanner 42 with the notches 221, 271 for hooking the spanner and rotating the spanner 42. The male threaded portion 28 of the bottom portion 26 is screwed into the female threaded portion 25 of the tubular portion 22, the bottom portion 26 is detachably provided on the tubular portion 22, and the bottom portion 26 is attached to the tubular portion 22. In the state where the bottom portion 26 is attached to the cylinder portion 22 to form the cylinder body 21, at least the engraved portion 291 is arranged so as to project into the hollow portion 24, and the engraved portion 291 is a cylinder to be driven into the rear end of the taper bolt of the post-installed anchor. The marking by the properly driven impact mark on the rear end of the taper bolt formed by the impact of the marking portion 291 provided on the bottom portion 26 of the body 21 indicates the type of the expansion sleeve of the post-installed anchor.

When constructing the post-installed anchor 50 in the same manner as in the first embodiment using the anchor driving rod 20 of the second embodiment, as shown in FIG. 9A, the concrete structure 60 is predetermined with a predetermined diameter. A perforation 61 having a perforation depth is formed, and the inside of the perforation 61 is cleaned. The depth of the perforation 61 in this example is also substantially the same as the length of the expansion sleeve 52 of the construction anchor 50. After that, as shown in FIG. 9B, the post-installed anchor 50 is inserted into the drilling 61, and after the insertion, the post-installed anchor 50 is extrapolated to the screw shaft portion 512 located at the rear of the taper bolt 51 of the construction anchor 50. The anchor driving rod 20 is covered, and the striking surface 23 at the tip of the anchor driving rod 20 is arranged in close proximity to or in contact with the rear end surface 521 of the expansion sleeve 52.

Then, as shown in FIG. 9 (c), for example, by striking the impact receiving surface 272 of the anchor driving rod 20 with the hammer 41 by the manual force of the operator, the striking surface 23 of the anchor driving rod 20 is expanded and sleeved. The expansion sleeve 52 is driven into the rear end surface 521 of the 52 in the hole depth direction with respect to the taper bolt 51. The expanded portion 523 of the expanded sleeve 52 driven toward the expanded diameter portion 514 of the taper bolt 51 is expanded following the expanded diameter portion 514, and the expanded expanded portion 523 is a hole wall of the concrete structure 60. It is pressed against 62 and the post-installed anchor 50 is mechanically fixed to the concrete structure 60.

At this time, the post-installed anchor 50 is driven and driven until the expansion sleeve 52 is inserted into the perforation 61 over the entire length, and the expansion sleeve 52 is driven with an embedded length corresponding to its length L. Will be done. At the final stage of this driving, the engraved portion 291 provided near the rear end of the hollow portion 24 of the tubular body 21 is recessed into the rear end surface 511 of the taper bolt 51, and the engraved 54 by the properly driven impact mark is formed on the rear end surface 511. It is formed (see FIGS. 9 (d), 10 and 11). This marking 54 indicates the type of the expansion sleeve 52 of the construction anchor 50 after being placed. In the illustrated example, the marking 54 of the number "3" is used with respect to the outer diameter D of the expansion sleeve 52. It is shown that the expansion sleeve 52 is a standard product in which the length L of the expansion sleeve 52 corresponding to the embedded length of the expansion sleeve 52 is three times or three times or more. It is preferable that the depth of the marking 54 is 0.3 to 0.5 mm.

By the above-mentioned construction process, the post-installed anchor 50 expands the expansion sleeve 52 and is placed in the concrete structure 60, and in other words, the post-installed anchor 50 is placed in the installed expansion sleeve 52. In addition, a post-installed anchor installation structure is constructed according to the second embodiment in which the marking 54 by the properly driven impact marks of the anchor driving rod 20 is formed (see FIGS. 9 (d) and 10). The post-installed anchor installation structure of the second embodiment can also be installed side by side with the existing post-installed anchor installation structure formed by driving the existing post-installed anchor 105 after the expansion sleeve driving type. After the post-installed anchor installation structure can be added to the post-installed anchor installation structure according to the second embodiment (see FIG. 11).

After that, as shown in FIGS. 9 (d) and 10 (b), for example, after being properly placed on the concrete structure 60, the attachment 71 is attached to the screw shaft portion 512 protruding from the concrete surface 63 of the construction anchor 50. The attachments 71 and 75 are attached to the concrete structure 60 by externally inserting the 75, further externalizing the washer 72 and the spring washer 73 to the outside in this order, and screwing the nut 74. In the second embodiment, the marking 54 formed at the rear end of the taper bolt 51 is exposed to the outside even in the state of the mounting structure in which the mounting objects 71 and 75 are mounted by the nut 74 or the like.

According to the second embodiment, the corresponding effect can be obtained from the configuration corresponding to the first embodiment, and after the expansion sleeve 52 is expanded and placed, after the taper bolt 51 of the construction anchor 50 is installed. The marking 54 at the end makes it possible to easily recognize the type of the expansion sleeve 52 of the construction anchor 50 after being placed. Further, since the marking 54 is exposed, the installer and the manager can visually recognize the marking 54 as it is without any special work. Therefore, the builder and the manager can confirm the appropriateness of the anchor and the construction state very easily, and the construction management work can be made more efficient.

Further, by providing the bottom portion 26 corresponding to the support portion supporting the engraved portion 291 in the tubular body 21 so as to be detachable, the engraved portion 291 can be replaced by exchanging the bottom portion 26 supporting the engraved portion 291. When the engraved portion 291 is worn by the impact, it can be easily replaced. Further, even when the constituent members of the tubular body other than the support portion of the engraved portion 291 and, in the present embodiment, the tubular portion 22 are worn by the impact, they can be easily replaced. Further, it can be adapted by replacing it with the corresponding engraved portion 291 according to the type of the expansion sleeve 52.

The post-installed anchor of the expansion sleeve driving type to be driven by the anchor driving rod 20 of the second embodiment is appropriate other than the above-mentioned post-installed anchor 50. For example, as shown in FIG. 13, the taper bolt 51a The length of the screw shaft portion 512a is longer than that of the thread shaft portion 512 of the tapered bolt 51, and a paragraph 515a having a smaller diameter than the screw shaft portion 512 and having no thread groove is formed in the middle near the rear end of the screw shaft portion 512a. The other configuration is the same as that of the post-installed anchor 50. The post-installed anchor 50a may be driven by the anchor driving rod 20.

For the anchor driving rod 20 for driving the post-installed anchor 50a, the length of the tubular portion 22 and the hollow portion 24 is longer than that for driving the post-installed anchor 50, and the post-installed anchor 50 is driven. It is placed in the same process as the setting process, and the post-installed anchor 50a expands the expansion sleeve 52 and is placed in the concrete structure 60, and in other words, it is placed in the placed expansion sleeve 52. After the construction is done, the construction anchor installation structure is constructed after the marking 54 by the properly driven impact marks of the anchor driving rod 20 is formed on the construction anchor 50a (FIGS. 12, 14 (a) to 14 (c), FIGS. 15 (a)).

After that, as shown in FIGS. 14 (d) and 15 (b), for example, after being properly placed on the concrete structure 60, the screw shaft portion 512a protruding from the concrete surface 63 of the construction anchor 50 is set as a paragraph and a portion 515a. The attachments 71 and 75 are externally attached to the tip side of the concrete structure, and the washer 72 is externally attached to the outside thereof and the nut 74 is screwed to attach the attachments 71 and 75 to the concrete structure 60. In the post-installed anchor 50a, even if the nut 74 is loosened due to vibration or the like, the nut 74 falls to the portion 515a as a step and is disengaged from the screw shaft portion 515a to cause misalignment, and the nut 74 is disengaged to the outside of the portion 515a as a step. In addition to being able to prevent falling, it is possible to find and repair the state of the nut 74 that has fallen into the section 515a at the time of inspection.

[Anchor driving rod and post-installed anchor installation structure of the third embodiment]
The anchor driving rod 30 of the third embodiment according to the present invention is also an anchor driving rod for driving an extended sleeve post-installed anchor, and as shown in FIG. 16, it is a bottomed tubular body. It is composed of 31. The cylindrical body 31 of the illustrated example has a substantially cylindrical shape with a bottom, and has a cylindrical portion 32 having a substantially cylindrical shape and penetrating the inside, and a bottom portion 36 provided on the rear side of the tubular portion 32 (see FIGS. 16 and 17). ). The tip of the cylinder 32 corresponding to the tip of the cylinder 31 is a striking surface 33 to be driven into the rear end of the expansion sleeve, and a hollow portion 34 is provided inside the cylinder 32 to form the cylinder 32. A male screw portion 35 is formed on the outer side of the rear portion. The hollow portion 34 has a length capable of accommodating a protruding portion protruding from the concrete surface 63 of the taper bolt when the expansion sleeve of the post-installed anchor is driven, and is at the rear end of the taper bolt accommodated by the engraved portion 372 described later. It is formed with a length that can be engraved.

The bottom portion 36 has a substantially bottomed cylindrical shape, and a female screw portion 361 having a small diameter is formed on the inner inner side thereof, and a female screw portion 362 having a diameter larger than that of the female screw portion 361 is formed on the opening side. The rear end of the bottom portion 36 arranged at the rear end of the tubular body 21 is a hit receiving surface 363. A stamping member 37 is detachably provided on the bottom portion 36. The engraving member 37 has a substantially columnar shape, and a male screw portion 371 is formed on the outer side of the rear portion of the engraving member 37. The engraved member 37 is detachably attached to the bottom portion 36.

At the tip of the marking member 37, a marking portion 372 for forming a marking by a hit mark that has been properly driven into the post-installed anchor is formed so as to project toward the tip side. The engraved portion 372 is formed of numbers, letters, a predetermined number of protrusions, etc. so that the engraving by the properly driven impact marks indicates the type of the expansion sleeve of the post-installed anchor, and the numbers are formed in the shape of a relief in the illustrated example. Has been done. The bottom portion 36 in the state where the marking member 37 is attached becomes the bottom portion 36 that supports the marking member 372 corresponding to the support portion that supports the marking portion 372. Further, the position of the engraved portion 372 in the longitudinal direction of the tubular body 31 can be adjusted by adjusting the screwing amount of the engraved member 37 with respect to the bottom portion 36.

The bottom portion 36 is provided so as to be detachably attached to the tubular portion 32 by screwing the female threaded portion 362 into the male threaded portion 35 of the tubular portion 32. In a state where the bottom portion 36 is attached to the cylinder portion 32, the bottom portion 36 that supports the marking member 372 corresponding to the support portion that supports the marking portion 372 is detachably provided in the cylinder portion 31, and at least the marking portion 372 is provided. It is arranged so as to project into the hollow portion 34. The marking by the properly driven impact mark on the rear end of the taper bolt formed by the impact of the marking portion 372 indicates the type of the expansion sleeve of the post-installed anchor.

When constructing the post-installed anchor 50 similar to the first and second embodiments using the anchor driving rod 30 of the third embodiment, basically, the anchor driving rod 20 of the second embodiment is used. Post-installed construction The procedure is the same as when constructing the anchor 50. At this time, the post-installed anchor 50 is driven and driven until the expansion sleeve 52 is inserted into the perforation 61 over the entire length, and the expansion sleeve 52 is driven with an embedded length corresponding to its length L. Will be done. At the final stage of this driving, the marking portion 372 provided at the rear portion of the hollow portion 34 of the tubular body 31 is recessed into the rear end surface 511 of the taper bolt 51, and the marking 55 with the properly driven impact marks is formed on the rear end surface 511. (See FIG. 18). This marking 55 also indicates the type of the expansion sleeve 52 of the construction anchor 50 after being placed. It is preferable that the depth of the marking 55 is also 0.3 to 0.5 mm.

Then, the post-installed anchor 50 expands the expansion sleeve 52 and is placed in the concrete structure 60, and is placed in the expanded sleeve 52, in other words, in the post-installed anchor 50. A post-installed anchor installation structure is constructed after the third embodiment in which the marking 55 is formed by the properly driven impact marks of the insertion rod 30 (see FIG. 18). The post-installed anchor installation structure according to the third embodiment can also be installed side by side with the existing post-installed anchor installation structure formed by driving the existing post-installed anchor after the expansion sleeve driving type. The post-installed anchor installation structure can be added to the post-installed anchor installation structure later in the third embodiment.

Then, as in the second embodiment, after being properly placed on the concrete structure 60, the attachments 71 and 75 are externally externally attached to the screw shaft portion 512 protruding from the concrete surface 63 of the construction anchor 50, and further, the outside thereof. The washer 72 and the spring washer 73 are externally inserted in this order, and the nut 74 is screwed to attach the attachments 71 and 75 to the concrete structure 60. Also in the third embodiment, in the state of the mounting structure in which the mounting objects 71 and 75 are mounted by the nuts 74 and the like, the marking 55 formed at the rear end of the taper bolt 51 is exposed to the outside (see FIG. 10).

According to the third embodiment, the corresponding effect can be obtained from the configuration corresponding to the second embodiment. Further, the diameter of the engraving member 372 can be adjusted, and the size of the engraved portion 372 can be adjusted in response to the adjustment. For example, the engraving 55 having a size close to the diameter of the taper bolt can be formed more easily. Can be done. Further, the amount of screwing of the marking member 37 to the bottom portion 36 is adjusted, and the position of the marking portion 372 is adjusted to a position where the marking 55 of an appropriate properly driven impact mark can be made by the rear end of the taper bolt. Can be positioned. Therefore, for example, even when it is necessary to make the penetration amount of the expansion sleeve slightly different due to the difference in the concrete strength of the concrete structure, the position of the engraved portion 372 is adjusted to an appropriate position to ensure that it is. It is possible to form a stamp 55 with a properly driven impact mark.

[Scope of inclusion of the invention disclosed herein]
The invention disclosed in the present specification is specified by changing the partial contents thereof to other contents disclosed in the present specification to the extent applicable, in addition to the inventions listed as inventions and the embodiments. Or, those specified by adding other contents disclosed in the present specification to these contents, or those specified by deleting these partial contents to the extent that a partial action and effect can be obtained and making them into a higher concept. Including. The invention disclosed in the present specification also includes the following modifications and additional contents.

For example, in the first embodiment, the protrusion-shaped engraved portion 17 is integrally provided at the tip of the cylinder 21 to be driven into the rear end of the expansion sleeve of the post-installed anchor, but the protrusion-shaped cylinder 21 is provided. It is also possible to have a structure in which the engraved portion provided at the tip of the cylinder is detachably provided inside the cylinder. As a specific example thereof, there is a configuration in which a short cylindrical support portion that supports the engraved portion such as a protrusion is screwed and attached to the front portion of the tubular body.

Further, as in the second embodiment, the post-installed anchors of the extended sleeve driving type to be driven by the anchor-installed rods 10 and 30 of the first and third embodiments may be appropriately used in addition to the post-installed anchors 50. be. In this case, the anchor driving rods 10 and 30 of the first and third embodiments, which have a length corresponding to the type of the post-installed anchor different from the post-installed anchor 50, are used to perform the engraving and the like. ..

Further, the materials of the anchor driving rods 10, 20 and 30 of the first to third embodiments are appropriate within an applicable range, and carbon steel such as S45C is preferable. Further, the impact receiving surfaces 16, 272, 363, the impact surfaces 16, 23, 33, and the engraved portions 17, 291, 372 that receive a strong impact from the anchor driving rods 10, 20, and 30 of the first to third embodiments are It is preferable to locally increase the surface strength and improve the wear resistance. For example, when these regions are locally subjected to high-frequency quenching to increase the surface strength, the durability of the anchor driving rods 10, 20, and 30 is increased. Sex can be increased.

INDUSTRIAL APPLICABILITY The present invention can be used when driving an extension sleeve post-installed anchor into a concrete structure.

10 ... Anchor driving rod 11 ... Cylinder 12 ... Bottom 13 ... Peripheral wall 14 ... Hollow part 15 ... Impact receiving surface 16 ... Impact surface 17, 17a ... Engraved part 20 ... Anchor driving rod 21 ... Cylinder 22 ... Cylinder 221 ... Notch 23 ... Strike surface 24 ... Hollow part 25 ... Female threaded part 26 ... Bottom 27 ... Base 271 ... Notch 272 ... Impact receiving surface 28 ... Male threaded part 29 ... Small diameter part 291 ... Engraved part 30 ... Anchor bolt 31 ... Cylinder 32 ... Cylinder 33 ... Strike surface 34 ... Hollow part 35 ... Male threaded part 36 ... Bottom 361 ... Female threaded part 362 ... Female threaded part 363 ... Impact receiving surface 37 ... Engraving member 371 ... Male threaded part 372 ... Engraved part 41 ... Hammer 42 ... Spanners 50, 50a ... Post-installed anchors 51, 51a ... Tapered bolts 511 ... Rear end face 512, 512a ... Screw shaft part 513 ... Shaft part 514 ... Diameter expansion part 515a ... Paradox part 52 ... Expansion sleeve 521 ... Rear end face 522 ... Sleeve body 523 ... Expansion part 524 ... Slit 525 ... Arc-shaped groove 53, 54, 55 ... Engraved 60 ... Concrete structure 61 ... Drilling 62 ... Hole wall 63 ... Concrete surface 71, 75 ... Attachment 72 ... Washer 73 ... Spring washer 74 ... Nut 101 ... Tapered bolt 102a, 102b ... Expansion sleeve 103 ... Concrete structure 105 ... Post-installed anchor D ... Expansion sleeve outer diameter L, L1, L2 ... Expansion sleeve length

Claims (4)

Anchor driving rod for driving anchors after the expansion sleeve driving type, in which the expansion sleeve is attached to the taper bolt.
It has a bottomed cylindrical body with a striking receiving surface provided at the rear end and a bottomed tubular body whose tip is driven into the rear end of the expansion sleeve.
An engraved portion for forming an engraving by a hit mark that has been properly driven into the post-installed anchor is provided at the bottom of the cylinder to be driven into the rear end of the taper bolt of the post-installed anchor.
The engraved portion is formed so that the engraving by the properly driven impact mark indicates the type of the expansion sleeve of the post-installed anchor, and the engraved portion is formed .
An engraving member having the engraved portion at the tip is provided by screwing on the bottom portion.
An anchor driving rod characterized in that the position of the engraved portion in the longitudinal direction of the cylinder can be adjusted by adjusting the screwing amount of the engraved member. The anchor driving rod according to claim 1, wherein the bottom portion corresponding to the support portion of the engraved portion is detachably provided in the tubular body. After the expansion sleeve driving type in which the expansion sleeve is exteriorized on the taper bolt, the construction anchor expands the expansion sleeve and drives it into the concrete structure.
The post-installed anchor installation structure, characterized in that the stamp is formed on the post-installed anchor that has been driven by the properly driven impact marks of the anchor driving rod according to claim 1 or 2. The post-installed anchor installation structure according to claim 3, wherein the marking is formed at the rear end of the taper bolt and is exposed.

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