JP4945230B2 - Anchor bolt support - Google Patents

Description

  The present invention relates to an anchor bolt support used, for example, when installing an anchor bolt on the foundation of a wooden building.

  Anchor bolts are indispensable for the foundation so that the foundations and pillars do not slip or rise due to earthquakes or typhoons. And about installation of this anchor bolt, an installation position, an installation interval, etc. are decided finely.

  However, anchor bolts are installed by placing concrete on the upper part between the molds so that they are suspended by a jig, and then the anchor bolts are positioned and the level adjustment is not easy. there were.

  For this reason, an anchor bolt standing device as disclosed in Patent Document 1 below has been proposed.

  In this standing device, a cylindrical foot is erected at the center of a square-shaped adjuster plate, and a lower end portion of an anchor bolt is screwed into the foot so as to freely advance and retract. Center marks for indicating the center of the foot are formed at the middle of each side of the adjuster plate. At the middle of these center marks, that is, at the four corners, the adjuster plate is discarded and fixed to the upper surface of the concrete. A nail hole is formed for use.

  With the above configuration, the anchor bolt can be installed at an accurate position, and the height, that is, the level of the anchor bolt can be adjusted.

However, the anchor bolt must be installed in the vertical position exactly at the predetermined position, but the anchor bolt is installed in the vertical direction only by accurately positioning the adjuster plate as in the case of the above-mentioned standing apparatus. It is not always done. If the anchor bolt is not vertically upward, the position of the upper end of the anchor bolt is not correct. That is, as a major premise for the position of the tip of the anchor bolt to be correct, it is necessary that the discarded concrete has a correct horizontal flat surface. However, such a thing is rare in the field and cannot be expected at all.
Japanese Utility Model Publication No. 57-6412

  In view of this, the main object of the present invention is to make it possible to easily and quickly perform the appropriate installation of the anchor bolt at a predetermined position.

  Means therefor is an anchor bolt support that has a body fitting provided with a mounting hole for attaching the lower end of the anchor bolt, and is fixed on the base surface. The body fitting is provided with the mounting hole. And a leg portion provided in at least three positions in a cross direction in plan view with the center point of the attachment hole as a center, and a hanging piece extending vertically downward from the top plate portion. And a horizontal piece extending horizontally outward from the lower end of the hanging piece, the horizontal piece has a mark coinciding with the cross direction around the center point of the mounting hole, and a fixing piece for fixing to the ground surface An insertion hole through which the fixing means is inserted is formed, and the top plate portion is provided with a plurality of through holes. These through holes protrude below the lower end height of the leg portion, and the top plate portion Adjustable height in the vertical direction with respect to Jiashi is an anchor bolt support which is held.

  Another means is an anchor bolt support fixing method for fixing the anchor bolt support to the base, and the anchor bolt support is fixed at a position corresponding to the insertion hole in the mounting position of the anchor bolt support on the base surface. After fixing the upper portion of the means in an exposed state, the insertion hole is inserted into the fixing means, and the height of the support legs is adjusted so as to level the top plate portion of the anchor bolt support, After fixing the anchor bolt to the mounting hole of the top plate, adjust each member so that the anchor bolt is vertically upward, and then screw the nut onto the male screw of the fixing means to determine the relationship between the fixing means and the support. It is the fixing method of the anchor bolt support tool to hold | maintain.

  That is, according to the configuration of the anchor bolt support tool described above, after the mark is placed at a predetermined position on the ground surface and grounded to the ground surface, the bottom end of the support leg is in contact with the ground surface. Adjust the height in the vertical direction so that the top plate is horizontal. At the same time, the position of the main body bracket on the lower ground is maintained by the insertion hole provided in the horizontal piece of the leg portion and the fixing means inserted into the insertion hole. Then, after attaching the lower end of the anchor bolt to the main bracket with the top plate level, adjust the support legs and fixing means again as necessary to adjust the upper end position of the anchor bolt. Then, fix the anchor bolt support to the base surface by the fixing means.

  In this way, the lower ends of the plurality of support legs are installed, and these support legs cooperate with the fixing means to hold the main body fitting in a desired posture and support the anchor bolt vertically upward. In other words, unlike the case of surface contact, the body bracket is leveled by the cooperation of multiple support legs and fixing means that are not affected by the ground surface, and a straight anchor bolt can be set up vertically. Actually, the anchor bolt is supported, and if necessary, readjustment is performed to correct the deviation caused by the shape of the anchor bolt, so that the tip of the anchor bolt is vertically upward.

  As described above, according to the present invention, the anchor bolt is supported after fixing the metal fitting in a horizontal state, and thereafter, if necessary, adjustment is performed and fixing is performed in an appropriate state. The work performed at the time of fixing has a series of flows. For this reason, the anchor bolt can be installed simply and quickly as a whole. In addition, since the grounding is performed by a plurality of support legs, it can be held in a predetermined posture regardless of the state of the ground surface. In addition, since the lower end position of the anchor bolt can be positioned at a predetermined position by the marks provided on the legs of the main body metal fitting, the anchor bolt can be appropriately installed at the predetermined position.

An embodiment for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing an anchor bolt support 11 (hereinafter referred to as “support”) and an anchor bolt 21 supported by the anchor bolt support 11, and FIG. 2 is a sectional view of the support 11 in a separated state. It is.

  As shown in these drawings, the support 11 includes a body fitting 31 having a shape that is substantially rectangular in plan view when the edge located on the outermost periphery is connected, and four screws that are screwed into the four corners of the body fitting 31. And supporting legs 41.

  The body fitting 31 is formed by pressing a metal plate, and has a top plate portion 32 and four leg portions 33 extending from the top plate portion 32.

  The top plate portion 32 has an attachment hole 34 for attaching the lower end portion 22 of the anchor bolt 21 at the center. An internal thread 34a is formed on the inner peripheral surface of the attachment hole 34 so that the anchor bolt 21 can be supported so that the height can be adjusted.

  In the illustrated example, the attachment hole 34 is formed by burring, but the attachment hole 34 can also be formed by a hole and a nut fixed to the hole.

  The leg portions 33 are provided at the four side portions along the longitudinal direction and the short direction of the top plate portion 32 in the cross-view in the plan view with the center point of the attachment hole 34 as the center. In forming these leg portions 33..., A notch 35 that is recessed in a bay shape is formed on the four sides of the top plate portion 32, and the leg portion is formed from the deepest part in the notch 35.

  The leg portions 33 are appropriately formed to have a width and are arranged so that the intermediate position in the width direction coincides with the cross direction. The leg 33 has a hanging piece 33a extending vertically downward and a horizontal piece 33b extending horizontally outward from the lower end of the hanging piece 33a. Since the leg portion 33 has such a shape, the bay-shaped cutout 35 allows the tip of the horizontal piece 33b at the lower end of the leg portion 33 to be accommodated without greatly projecting outward. As a result, as shown in FIG. 3, it is possible to improve the fit within the foundation (solid foundation 61) on which the anchor bolt 21 is installed.

  Further, the tip of the horizontal piece 33b of the leg 33 is formed in a sharp triangle so as to be suitable for positioning. This tip portion serves as a mark 36 indicating the center point of the mounting hole 34 provided at the center of the top plate portion 32. An insertion hole 37 penetrating in the thickness direction is formed on the rear side of the mark 36 and on the straight line in the cross direction. The insertion hole 37 is a portion through which a fixing means for fixing the base surface made of the base concrete surface or the discarded concrete surface is inserted. As described above, since the mark 36 and the insertion hole 37 are arranged on the straight line in the cross direction, positioning can be performed more easily and accurately.

  Screw holes 38 are formed at the four corners of the top plate portion 32 to hold the support legs 41. The support leg 41 is composed of a bolt with a sharp bottom end. Since it is sharp, even if there is unevenness, the main body metal fitting 31 can be properly supported, and adjustment for leveling is easy. Instead of the screw hole 38, a hole without a female screw may be used. In this case, the adjustment may be made by screwing the nut to the support leg 41 made of a bolt.

  When holding the support leg 41 and at least before use, the support leg is set so as to protrude below the lower end height of the leg portion 33 as shown in FIG.

  As the anchor bolt 21, one in which male threads are formed at both upper and lower ends of a deformed reinforcing bar is used. The upper end male screw 23 holds a base top plate 25 for indicating the level of the base top so as to be movable up and down by screwing. The basic top plate 25 has a structure in which a hole is formed at the center of a rectangular plate member 25a, and a nut 25b is fixed to the lower surface. Further, on the upper end surface of the anchor bolt 21, a mark 27 made of a cross line for indicating the center point is provided.

  As the fixing means, an existing concrete nail or anchor can be used. However, in the case of this support tool 11, a driving member 51 as illustrated in FIG. 4 is provided as the fixing means.

  In other words, the driving member 51 is formed in a nail shape having a hardness capable of being driven into concrete, and has a male screw 52 capable of screwing a nut 55 (see FIG. 7) at least in an upper portion. The driving member 51 shown in FIGS. 4A and 4B is an example in which the male screw 52 is formed only on the upper portion. The range in which the male screw 52 is formed and the length of the driving member 51 are appropriately set according to conditions such as the place of use. The driving member 51 shown in FIG. 4C is an example in which a male screw 52 is formed over the entire length direction.

  In addition, an engaging portion that engages a rotation jig (not shown) for rotating the driving member 51 is formed at the upper end portion of the driving member 51. An appropriate structure can be used for the engaging portion. For example, the engaging portion shown in FIGS. 4A and 4C is an engaging groove 53 with which the tip of a driver as a rotating jig is engaged. The engaging portion shown in (b) is a hexagonal engaging portion 54 with which a wrench as a rotating jig engages. By having such an engaging portion, fine adjustment or the like can be performed so that it can be driven accurately when driven.

  The diameter of the driving member 51 is set to a thickness that allows insertion into the insertion hole 37 even at the thickest part.

The support 11 configured as described above is used as follows.
First, the support 11 is fixed to the base surface 65. That is, when the installation location of the anchor bolt 21 is a solid foundation of a wooden building and is a solid foundation 61 that overhangs the rising portion 62 as shown in FIG. 5, the predetermined position on the upper surface of the base concrete 63 is the above-described position. It becomes the lower ground 65.

  The base surface 65 is covered with ink as usual, and a core ink 66 is attached at a predetermined position where the anchor bolt 21 is installed. As shown in FIG. 6, the driving member 51 is driven into a position corresponding to the insertion hole 37 of the leg portion 33 at the mounting position of the support 11 on the core ink 66.

  Since there are two types of positions of the insertion hole 37 from the center of the attachment hole 34, when the driving member 51 is driven, two circles C1 and C2 having different diameters about the intersection of the core ink 66 are drawn. Keep it. The driving member 51 is driven straight into a predetermined intersection position between the circles C1 and C2 and the core corner 66. Driving is performed up to the middle position in the length direction, and the upper male screw 52 is protruded (see FIG. 7).

  Subsequently, as shown in FIG. 7, the support 11 is lowered from above so that the insertion hole 37 of the leg portion 33 is inserted, and is grounded. Then, the nut 55 is screwed into a portion of the driving member 51 that protrudes above the horizontal piece 33 b of the leg portion 33.

  In this state, the level of the four grounded support legs 41... Is adjusted by using a level 71 as shown in FIG. To do.

  Then, as shown in FIG. 9, the lower end portion 22 of the anchor bolt 21 is screwed into the horizontal mounting hole 34 of the top plate portion 32, and the height of the upper end surface of the anchor bolt 21 is set to a predetermined height. Adjust to the size. Thereafter, the passages of the plurality of anchor bolts 21 are viewed using the transit 72 and the like, and the verticality of the anchor bolts 21 is viewed using the level 71 (see FIG. 10).

  As a result, if the verticality is not obtained, the support legs 41, etc. are adjusted again so that the upper end of the anchor bolt 21 faces straight upward at a predetermined position, and then the nut 55 is tightened. The ground contact state on the lower ground 65 of the support 11 is fixed. If the verticality is obtained, the nut 55 is tightened and fixed without readjustment.

  FIG. 11 shows the case where the anchor bolt 21 is installed on a solid foundation of a wooden building and is a foundation 61 in which the base and the rising portion 62 are placed at once by a floating formwork (not shown). Thus, the predetermined position on the upper surface of the discarded concrete 64 is the lower ground 65. In this case as well, the anchor bolt 21 can be supported by the support 11 shown in FIG. 1 described above, but the support 11 provided with the auxiliary tool 45 as shown in FIG. Because it is good.

  Next, the support 11 provided with the auxiliary tool 45 will be described. In this description, the same components as those described above are denoted by the same reference numerals and detailed description thereof is omitted.

  The auxiliary tool 45 includes a plate member 46 that moves up and down along the length direction of the anchor bolt 21 in the longitudinal direction, and four support members 47 that support the plate member 46. . The plate member 46 has a substantially rectangular shape that is the same as the schematic shape of the metal fitting body 31, and an insertion tube portion 46 a that allows an intermediate portion of the anchor bolt 21 to be inserted is formed at the center. Two set screws 48 are attached to the insertion tube portion 46a and can be fixed at a predetermined position on the anchor bolt 21.

  In addition, through holes 46b are formed at the four corners of the plate member 46, and the upper end side portion of the support member 47 is held in the through holes 46b. Male screws are formed on at least the upper and lower ends of the support members 47. Moreover, the lower end part of the support | pillar member 47 ... is screwed together in the screw hole 38 of the main body metal fitting 31, and separates and supports the main body metal fitting 31 and the plate member 46 so that a vertical movement is possible.

  The plate member 46 can be moved up and down on the column member 47... And can be tilted. Therefore, the through holes 46 b formed at the four corners of the plate member 46 are larger than the diameter of the column member 47. The diameter is set slightly larger. In order to maintain the relationship with the plate member 46, a nut 49 is screwed to the support member 47 as necessary.

  Note that the lower end portion of the column member 47 is a portion corresponding to the support leg 41 in FIG. 1 and the like. The lower end portion is set so as to protrude below the lower end height of the leg portion 33.

  Thus, the support tool 11 provided with the auxiliary tool 45 is also used similarly to the above. If only the difference is described, when the bottom end of the anchor bolt 21 is fixed to the mounting hole 34 of the main body metal 31 and the verticality of the anchor bolt 21 is taken out, the vertical movement and tilting of the plate member 46, The stopper 48 and the nut 49 are operated to make corrections to assist in fixing the posture of each member.

  The presence of the auxiliary tool 45 provides a stable support state even when the anchor bolt 21 is long.

  When there is no gap between the anchor bolt 21 and the support member 47 and there is a problem with the bar arrangement, the intermediate portion in the length direction of the anchor bolt 21 is U-shaped as viewed from the side as shown in FIG. It is good to bend it.

  Whether or not the auxiliary tool 45 is present, the support tool 11 is fixed by the procedure as described above and supports the anchor bolt 21. For this reason, the work can be performed step by step, such as driving the driving member 51 and grounding the support tool 11, resulting in a series of work having one flow. If these operations are carried out in order, the anchor bolt 21 can be inevitably supported at a predetermined position, so that, for example, as compared with the case where a plurality of operations are performed at the same time, for example, positioning and fixing are performed simultaneously. Is accurate, simple and quick. For this reason, the occurrence of mistakes can be avoided.

  Moreover, since the support is supported by the plurality of support legs 41, the anchor bolt 21 can be accurately supported regardless of the state of the base surface 65.

  Hereinafter, other embodiments will be described. In this description, parts that are the same as or equivalent to the previous configuration are given the same reference numerals, and detailed descriptions thereof are omitted.

  FIG. 14 shows another example of the mark 36 of the leg 33, and it can be formed by cutting as shown in FIG. Further, as shown in FIG. 14B, it can be formed by a linear recess.

  FIG. 15 shows another example of the support leg 41, which is an example in which the lower end of the support leg 41 always projects below the lower end height of the leg portion 33. That is, as shown in FIG. 15A, the E-ring 41a can be fixed to the thread groove of the support leg 41 or a groove formed separately to restrict the support leg 41 from moving above it. . Further, as shown in FIG. 15 (b), the support leg 41 is also constituted by a pin member having an upper part 41b having a male screw and a lower part 41c having a larger diameter and no male screw. It can restrict | limit so that 41 may not move above a fixed position. An engagement groove 41d that engages the tip of a jig such as a driver is formed on the upper end surface.

  In this way, by restricting the lower end of the support leg 41 to protrude downward, it is possible to eliminate work mistakes by craftsmen.

  16 and 17 are perspective views showing other forms of the body fitting 31. FIG. That is, the body fitting 31 is formed in a substantially triangular shape in plan view.

  16 is formed with four leg portions 33, and three support legs 41 are held. On the other hand, three leg portions 33 are formed on the main body member 31 of FIG. 17, and three support legs 41 are held. When the support legs 41 are provided in this manner, the adjustment work for leveling out can be easily performed by a craftsman accustomed to handling equipment such as transit.

  Moreover, even if it is the support tool 11 of such a shape, it is possible to attach the auxiliary tool 45 as shown in FIG. In this case, the plate member 46 is formed in a triangular shape in plan view and includes three support members 47.

In the correspondence between the configuration of the present invention and the configuration of the above-described embodiment,
The fixing means of the present invention corresponds to the driving member 51 in the above embodiment,
Similarly,
The through hole corresponds to the screw hole 38,
The holding hole corresponds to the insertion tube portion 46a,
The engaging portion corresponds to the engaging groove 53 or the hexagonal engaging portion 54.
The present invention is not limited to the above configuration, and other forms can be adopted.

The perspective view of an anchor bolt support tool. Sectional drawing of an anchor bolt support tool. The top view of an anchor bolt support tool. The perspective view of a driving member. Explanatory drawing of the use condition of an anchor bolt support tool. The perspective view which shows 1 process of the operation | work for anchor bolt support. The perspective view which shows 1 process of the operation | work for anchor bolt support. The perspective view which shows 1 process of the operation | work for anchor bolt support. The perspective view which shows 1 process of the operation | work for anchor bolt support. The perspective view which shows 1 process of the operation | work for anchor bolt support. Explanatory drawing of the use condition of an anchor bolt support tool. The perspective view of the anchor bolt support tool with an auxiliary tool. Explanatory drawing of the use condition of an anchor bolt support tool. The perspective view which shows the other example of a mark. The perspective view which shows the other example of a support leg. The perspective view which shows the other example of an anchor bolt support tool. The perspective view which shows the other example of an anchor bolt support tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Anchor bolt support tool 21 ... Anchor bolt 22 ... Lower end part 31 ... Main body metal fitting 32 ... Top plate part 33 ... Leg part 33a ... Hanging piece 33b ... Horizontal piece 34 ... Mounting hole 36 ... Marking 37 ... Insertion hole 38 ... Screw hole DESCRIPTION OF SYMBOLS 41 ... Support leg 46 ... Plate member 46a ... Insertion cylinder part 47 ... Strut member 51 ... Driving member 52 ... Male screw 53 ... Engagement groove 54 ... Hexagonal engagement part 55 ... Nut 65 ... Base surface

Claims (8)

An anchor bolt support that has a body fitting provided with a mounting hole for attaching a lower end portion of an anchor bolt, and is fixed on a base surface,
The main body bracket is formed with a top plate portion having the mounting hole, and leg portions provided in at least three locations in a cross-view in a plan view around the center point of the mounting hole,
The leg portion is provided with a hanging piece that extends vertically downward from the top plate portion, and a horizontal piece that extends horizontally outward from the lower end of the hanging piece,
The horizontal piece is formed with a mark coinciding with the cross direction centered on the center point of the mounting hole, and an insertion hole for inserting a fixing means for fixing to the base surface.
The top plate part is provided with a plurality of through holes,
An anchor bolt support in which a support leg that protrudes below the lower end height of the leg portion and can be adjusted in the vertical direction with respect to the top plate portion is held in these through holes. The anchor bolt support according to claim 1, wherein a center position of the insertion hole is set on a straight line connecting a center point of the attachment hole of the top plate portion and the mark. A plurality of support members are erected on the top plate,
The anchor bolt support according to claim 1 or 2, wherein a plate member having a holding hole through which the anchor bolt can be inserted is provided on these support members so as to be vertically movable and tiltable. The anchor bolt support according to claim 3, wherein the support member also serves as the support leg. 5. The driving member according to claim 1, wherein the fixing means is formed in a nail shape having a hardness capable of being driven into concrete, and a driving member having a male screw capable of screwing a nut is provided on the upper portion. The anchor bolt support according to any one of the above. 5. The fixing means includes a driving member that is formed in a nail shape having a hardness that can be driven into concrete, and has a male screw that can be screwed into a nut in the entire length direction. The anchor bolt support according to any one of the above. The anchor bolt support tool according to claim 5 or 6, wherein an engaging portion that engages a rotating jig for rotating the driving member is formed at an upper end portion of the driving member. An anchor bolt support fixing method for fixing the anchor bolt support according to any one of claims 1 to 7 to a base,
After fixing the upper part of the fixing means exposed to the position corresponding to the insertion hole in the mounting position of the anchor bolt support on the lower ground,
While inserting the insertion hole into the fixing means,
Adjust the height of the support legs to level the top of the anchor bolt support,
After fixing the anchor bolt to the mounting hole in the top plate, adjust each member so that the anchor bolt is vertically upward,
An anchor bolt support fixing method in which a nut is screwed into a male screw of the fixing means to maintain the relationship between the fixing means and the support.

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