JPH064149U - Positioning jig for sheath tube - Google Patents

Abstract

(57) [Summary] [Objective] The work of temporarily fixing the sheath tube to the positioning jig is simple, and the positioning jig can be easily installed, and the sheath tube is accurately buried. A lid member 23 having a male screw portion 22 screwed into a female screw portion 21a of a sheath tube 21 and a head portion 24, and having a width substantially the same as the inner method of the mold, And a plate member 26 having an insertion hole 25 through which the male screw portion 22 is inserted. The head portion 24 of the lid member 23 is formed to have a larger diameter than the insertion hole 25 of the plate member 26. Become.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sheath tube positioning jig used for burying a sheath tube with high accuracy when forming a foundation.

[0002]

[Prior art]

 To form the foundation, a method of arranging formwork and pouring concrete is generally adopted. Particularly in recent years, in forming such a foundation, a sheath tube 2 is embedded in the foundation 1 as shown in FIG. The sheath pipe 2 buried in the foundation 1 has the upper end surface flush with the top end of the foundation 1 and is vertically arranged in the foundation 1. The sheath tube 2 is for inserting, for example, a three-story battlement plate bolt 3 therein. That is, in this sheath tube 2, the rod-shaped portion of the battledore bolt 3 was inserted, the floor panel 4 and the corner pillar 5 were assembled on the foundation 1, and the upper portion of the battledore bolt 3 was fixed to the corner pillar 5. After that, the grout material is filled inside in order to fix the battlement plate bolts 3.

By the way, conventionally, in order to embed the sheath tube 2 in a predetermined position of the foundation 1, a positioning jig 6 and a fixing bolt 7 as shown in FIG. 5 are used. The sheath tube 2 has a cylindrical shape and is used together with the disk-shaped bottom member 8. The bottom member 8 has the same diameter as the outer diameter of the sheath tube 2, and an insertion hole for inserting the stop bolt 7 is formed in the center thereof. The set bolt 7 is longer than the sheath tube 2 and has a male screw over its entire length. The positioning jig 6 is mainly composed of a rectangular plywood 6a having the same width as that of the inner shape of the mold 9 and fixing trees 6b, 6b attached to the upper edge of the plywood 6a. is there. The plywood 6a is provided with an insertion hole for inserting the set bolt 7 at a position where the sheath tube 2 is to be embedded.

In the method of burying the sheath tube 2 in the foundation 1 using the positioning jig 6, first, the set bolt 6 is inserted into the plywood 6 a of the positioning jig 6, and the nuts are tightened from the upper and lower ends of the set bolt 7. 10 and 10 are fitted and the nuts 10 and 10 are tightened on the upper and lower surfaces of the plywood 6a to hold the set bolt 7 vertically to the plywood 6a. Then, the sheath tube 2 is brought into contact with the lower surface of the plywood 6a so that the stop bolt 7 becomes the axis of the sheath tube 2. Then, the bottom member 8 and the nut 10 are fitted from the lower end of the fixing bolt 7, the bottom member 8 is brought into contact with the lower surface of the sheath tube 2, and the nut 10 is tightened on the lower surface of the bottom member 8. As described above, the sheath tube 2 and the bottom member 8 are extendedly arranged on the plywood 6a of the positioning jig 6 via the fixing bolt 7. Then, the lower surface of the plywood 6a of the positioning jig 6 is aligned with the horizontal surface which is the top end of the foundation 1, and the positioning jig 6 is temporarily fixed to the mold 9 at a predetermined position. The temporary fixing is performed by hammering nails 11 ... From the fixing wood pieces 6b, 6b of the positioning jig 6 toward the mold 9 substantially horizontally. Further, the lower portion of the sheath tube 2 is connected to the reinforcing bar 12 in the form 9 by the iron wire 13. Then, the concrete is poured into the mold 9 and left for a predetermined time to cure the concrete. Then, the nails 11 are pulled out, the stop bolt 7 is rotated, and the stop bolt 7 and the positioning jig 6 are removed.

[0005]

[Problems to be solved by the device]

 However, when such a positioning jig is used, the work of attaching the sheath tube to the positioning jig is a troublesome work of fixing it with a nut via a stop bolt, which is troublesome and the workability is poor. is there.

The present invention has been made in view of the above circumstances, and the work of temporarily fixing the sheath tube to the positioning jig is simple, and the positioning jig can be easily installed. The purpose is to provide a positioning tool for the sheath tube that can bury the tube accurately.

[0007]

[Means for Solving the Problems]

 The sheath tube positioning jig of the present invention has a lid member having a male screw portion to be screwed with a female screw portion of the sheath tube, and a head portion, and has a width substantially the same as the inner direction of the form, And a plate member having an insertion hole through which the male screw portion of the member is inserted, wherein the head of the lid member is formed larger than the insertion hole of the plate member. I decided to do it.

[0008]

[Action]

 According to the sheath tube positioning jig of the present invention, the sheath tube can be temporarily fixed to the positioning jig by only screwing the lid member to the sheath tube through the plate member, and after the embedding, The positioning jig can be removed by the same simple work. Also, the male screw part of the lid member and the sheath tube are screwed together, so that the position of the sheath tube does not shift after temporary fixing, and the sheath tube is pushed in after concrete is poured and vertically embedded. be able to.

[0009]

【Example】

 The sheath tube positioning jig of the present invention will be described in detail below with reference to embodiments. 1 to 3 are views showing an embodiment of a sheath tube positioning jig of the present invention, in which reference numeral 20 is a sheath tube positioning jig. As shown in FIG. 2, the positioning jig 20 includes a lid member 23 having a male screw portion 22 that is screwed into an upper female screw portion 21a of a bottomed cylindrical sheath tube 21, and a male screw portion 22. And a plate member 26 having an insertion hole 25 through which is inserted.

The lid member 23 of the positioning jig 20 is composed of a head portion 24 and a male screw portion 22, and is integrally formed of metal or hard resin. The head 24 is, for example, in the shape of a circular plate, and has a notch 24a formed in the diametrical direction on the upper surface thereof to facilitate screwing. The male screw portion 22 is screwed with the female screw portion 21a of the sheath tube, and is inserted into the insertion hole 25 of the plate member without any gap.

The plate member 26 of the positioning jig 20 is made of metal, and includes a rectangular plate portion having the same width as the width of the foundation 1 and a stabilizing vertical portion 27 formed above the rectangular plate portion. It will be. The plate member 26 has an insertion hole 25 formed in advance at a position where the sheath tube 21 should be embedded when the plate member 26 is installed at the top of the foundation 1. The insertion hole 25 is formed to be slightly smaller than the outer diameter of the sheath tube 21 and substantially the same as the inner diameter of the sheath tube 21. The stabilizing vertical portion 27 is formed so as to follow the inside of the mold 9 when installed in the mold 9, and has a nail insertion hole formed therein. Further, as shown in FIG. 3, the plate member 26 is configured similarly for the corners, and in that case, a plate portion corresponding to the shape of the corners is used.

To temporarily fix the sheath tube 21 to the positioning jig 20 having such a configuration, first, the sheath tube 21 is attached to the lower surface of the plate member 26 so that the opening of the sheath tube 21 communicates with the insertion hole 25. Abut. Next, the lid member 23 is inserted into the insertion hole 25 of the plate member 26 from above. Then, the male screw portion 22 of the lid member 23 and the female screw portion 21a of the sheath tube 21 are screwed together so that the lower surface of the head portion 24 of the lid member 23 comes into close contact with the upper surface of the plate member 26.

Next, a method of embedding the sheath tube 21 in the foundation 1 using the positioning jig 20 of this embodiment will be described. As in the conventional case, the mold 9 and the reinforcing bars 12 are assembled, and the concrete 14 is poured into the mold 9. Then, as shown in FIG. 3, while the concrete 14 is not hardened, the positioning jig 20 to which the sheath tube 21 has already been temporarily fixed is pushed into a predetermined position from above and the upper surface of the sheath tube 21 and the plate member 26. Push it down until the bottom surface is aligned with the base 1 crown. Then, the nail is passed through the nail insertion hole of the stabilizing vertical portion 27 of the plate member 26 and is struck on the form frame 9 to surely stabilize the positioning jig 20. Then, after the concrete 14 hardens, the nails 11 for position stabilization are pulled out, and as shown in FIG. 3, the lid member 23 is rotated to remove the lid member 23 and the plate member 26. Then, the foundation 1 obtained by removing the mold 9 is such that the upper surface of the sheath tube 21 is opened at a predetermined position so as to be flush with the top end of the foundation 1. Here, if only the lid member 23 is screwed into the return sheath tube 21, it is possible to prevent rain and dust from entering the sheath tube 21 until the floor panel or the like is assembled.

As described above, in the positioning jig 20 of this embodiment, when the sheath tube 21 is temporarily fixed using this, it can be embedded and fixed in the foundation 1 in a short time without any trouble. it can. Further, even when the positioning jig 20 is removed, the lid member 23 can be similarly rotated and pulled out, so that the troublesome work as in the conventional case is omitted and the work is simplified.

Further, since the positioning jig 20 is installed after pouring the concrete 14, problems such as displacement of the plate member 26 due to pouring the concrete 14 are avoided, and the positioning inside the sheath tube 21 is avoided. It can easily prevent the concrete 14 from entering. Also, since the horizontal plane at the top of the foundation 1 does not have to be imaginary, the installation position can be determined easily, and the installation can be performed reliably by simply pushing in the temporarily fixed sheath tube. In addition, since the stabilizing vertical portion 27 is provided, stable position stability can be obtained.

Further, in the positioning jig 20, the upper surface of the plate member 26 and the inner surface of the insertion hole 25 are in close contact with the lid member 23, and the male screw portion 22 of the lid member 23 is the sheath tube 21. Since it is screwed with the female screw portion 21a, the sheath tube 21 can be firmly held vertically. Further, since the plate member 26 of the positioning jig 20 is made of metal, the sheath tube 21 will not be displaced due to the deformation of the positioning jig 20.

The positioning jig 20 of the present invention is not limited to the above-mentioned embodiment, and the specific constitutional requirements such as the shape and size of each part of the plate member 26 and the lid member 23 can be changed appropriately in practice. Is. Further, the positions and the numbers of the insertion holes 25 formed in the plate member 26 are not limited to the examples shown in the above embodiment, and the positions and the numbers may be set according to the wall panel or the like constructed on the foundation 1. Good.

[0018]

[Effect of device]

 According to the sheath tube positioning jig of the present invention, the sheath tube can be temporarily fixed to the positioning jig only by the operation of screwing the lid member to the sheath tube through the plate member. It is possible to save time and labor by temporarily fixing the sheath tube to the positioning jig and removing the positioning jig after embedding.

Further, in such a positioning jig, since the positioning jig is installed after pouring concrete, problems such as displacement of the plate member due to pouring concrete are avoided, and the concrete is placed inside the sheath tube. Can be easily prevented. Also, since the horizontal surface at the top of the foundation does not have to be virtual, it is easy to determine the installation position, and the installation can be done reliably by simply pushing in the temporarily fixed sheath tube.

Further, in such a positioning jig, since the male screw portion of the lid member is screwed with the female screw portion of the sheath tube, the sheath tube can be firmly held vertically. It is possible to bury it vertically.

In addition, in such a positioning jig, after removing the positioning jig, the lid member is screwed into the upper opening of the sheath tube to assemble a wall panel or the like on the foundation. Until then, it is possible to prevent foreign matter such as rain and dust from entering the sheath tube.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a sheath tube positioning jig of the present invention.

FIG. 2 is an exploded view of a positioning jig for the sheath tube of FIG.

FIG. 3 is a perspective view of the sheath tube positioning jig of the present invention when it is installed on a foundation and when the positioning jig is removed after hardening of concrete.

FIG. 4 is a partially exploded perspective view showing a usage example of a sheath tube.

FIG. 5 is a cross-sectional view showing an example of a conventional jig for positioning a sheath tube.

[Explanation of symbols]

 20 Sheath tube positioning jig 21 Sheath tube 21a Female screw part 22 Male screw part 23 Lid member 24 Head part 25 Insertion hole 26 Plate member

Claims (1)

[Scope of utility model registration request] 1. A jig for use in embedding a bottomed cylindrical sheath tube having a female screw portion in the upper part in a foundation formed by arranging a mold, the female screw of the sheath tube A lid member having a male screw portion and a head portion that are screwed into the portion, and an insertion hole that has a width approximately the same as the inner dimension of the form and through which the male screw portion of the lid member is inserted are provided. A jig for positioning a sheath tube, comprising: a plate member, wherein a head portion of the lid member is formed with a diameter larger than that of an insertion hole of the plate member.