JP5501215B2 - Sleeve device and sleeve installation method - Google Patents

Description

  The present invention relates to a sleeve device and a sleeve installation method for forming a penetration portion in a concrete wall.

  Conventionally, as a method of forming a penetration portion in a concrete wall, there has been a method of embedding a sleeve in the concrete wall (see, for example, Patent Document 1). As shown in FIG. 17, the sleeve 20 has a through-hole 21 inside, and is composed of an internal cylindrical body 22 and an external cylindrical body 23 covering the internal cylindrical body 22. . Here, a spiral groove 22 a is provided on the outer surface of the inner cylinder 22. Further, the outer cylindrical body 23 is provided with an elastic piece 23a, and a locking claw 23b that engages with the spiral groove 22a is formed on the elastic piece 23a. Therefore, between the molds 25 and 25 for forming the concrete wall 24, from the state in which the sleeve 20 is contracted, the insertion cylinder 22 is relatively pulled with respect to the exterior cylinder 23, or the exterior cylinder is relatively By rotating the body 23 along the spiral groove 22a, the length of the sleeve 20 is extended, and the sleeve 20 is stretched between the molds 25 and 25, whereby the sleeve 20 is placed between the molds 25 and 25. It was installed at a predetermined position.

JP 2009-264516 A

  By the way, in the conventional sleeve 20, when the sleeve 20 is installed, the sleeve 20 is stretched and stretched between the two molds 25, 25, so that the installation work is performed between the molds 25, 25. It was troublesome.

  The present invention has been made to solve the above-described conventional drawbacks, and an object of the present invention is to provide a sleeve device and a sleeve installation method capable of easily and accurately installing a sleeve between molds. It is to provide.

In order to achieve the above object, a sleeve device and a sleeve installation method according to the present invention are configured as follows. That is,
The sleeve device according to the first aspect of the present invention is a sleeve device for forming a through-hole in a concrete wall formed by placing concrete between a pair of facing molds. The sleeve device includes a sleeve that is arranged between the pair of molds and has an inside that forms the penetrating part, and a sleeve fixing tool that fixes the sleeve to the mold. The sleeve fixing tool is a fixing tool detachably fitted to the other end of the sleeve opposite to one end of the pair of molds on the side of one mold, A fixing device main body that closes the other end portion, and an engaging portion that engages with the sleeve so that the fixing device main body does not move in the direction of one end portion of the sleeve. The fixing body can be penetrated by a bolt member passing through the inside of the sleeve, and an internal thread portion into which the bolt member is screwed or an internal thread member having the internal thread portion is connected to one end side of the sleeve. A female screw member accommodating portion that is immovably accommodated in the direction is provided. Therefore, the sleeve device includes a first nut on one end side of the bolt member that passes through the inside of the sleeve and is screwed into the female screw portion and protrudes outward through a through hole provided in the one mold. Is screwed so that the sleeve and the one mold can be held between the first nut and the sleeve fixture. In addition, the sleeve device then projects outward from another through-hole provided in the other mold of the pair of molds that are installed so as to sandwich the sleeve between the one mold. A second nut is screwed into the other end side of the bolt member, and the sleeve and the pair of molds can be held between the second nut and the first nut.

  According to this sleeve device, when the sleeve is installed between the molds, first, the first mold is clamped between the first nut and the sleeve fixing member that are screwed into the bolt member, so that one of the molds is clamped. The sleeve can be fixed to the frame. Further, after that, the other mold is installed, and the second nut is screwed into the other end of the bolt member in which the bolt member protrudes outward from the other through hole provided in the other mold. Thus, by sandwiching the sleeve and the pair of molds by the second nut and the first nut, the sleeve can be fixed to the pair of molds. Thus, first, the sleeve is fixed to one mold, that is, the sleeve is fixed without installing the other mold. Thereafter, when the sleeve is fixed to the pair of molds, the fixing operation is performed from the outside of the molds. This facilitates a series of fixing operations of the sleeve to the formwork, and the sleeve can be easily installed between the formwork. Further, when the sleeve is fixed to the one mold, the sleeve and the one mold are sandwiched between the first nut and the sleeve fixture. Thereafter, when the sleeve is fixed to the pair of molds, the sleeve and the pair of molds are held between the second nut and the first nut. As a result, the sleeve can be fixed to one of the molds, and further to the pair of molds, so that the sleeve can be accurately placed between the molds.

  According to a second aspect of the present invention, there is provided a sleeve device according to the first aspect, wherein the sleeve fixture is provided with the other through-hole formed in the other mold. A receiving space for receiving the tip of the drilling drill is provided in front of the female screw portion so that the tip of the drilling drill does not interfere with the female screw portion.

  The sleeve device according to a third aspect of the invention is the sleeve device according to the first or second aspect, wherein the engagement portion is fixed so that the engagement portion abuts against an end surface of the other end portion of the sleeve. It consists of a flange projecting from the tool body.

  According to a fourth aspect of the present invention, there is provided a sleeve device according to any one of the first to third aspects, wherein a sleeve fixing auxiliary tool detachably fitted to one end of the sleeve is provided. Prepare. The sleeve fixing auxiliary tool includes an auxiliary tool main body that closes one end of the sleeve, and the auxiliary tool main body is provided with a through-hole through which the bolt member passes, and the through-hole is provided as the bolt member. As a result of penetrating, displacement of the sleeve with respect to the one mold is regulated.

  According to a fifth aspect of the present invention, there is provided a sleeve installation method in which a through portion is formed in a concrete wall formed by placing concrete between a pair of facing molds. It is a sleeve installation method which installs the sleeve to comprise between a pair of said formwork. This sleeve installation method includes first to third steps shown below.

  First step: One mold of the pair of molds is installed, a bolt member is passed through a through hole provided in the one mold, and the sleeve is placed inside the sleeve. In a female thread portion provided in a sleeve fixture that is detachably fitted to the other end portion of the sleeve opposite to the one end portion on the one mold side, the member is arranged so that the member passes therethrough. The bolt member is screwed together, and a first nut is screwed into one end side of the bolt member protruding to the outside of the one mold, and the sleeve and the one are connected by the first nut and the sleeve fixture. The sleeve is temporarily fixed by fixing the sleeve to the one mold frame so as to sandwich the mold.

  Second step: installing the other mold of the pair of molds so that the sleeve is sandwiched between the one mold and the bolt member from another through hole provided in the other mold The bolt member is moved in the axial direction of the bolt member by an operation from the outside of the mold so that the other end of the bolt protrudes outward.

  Third step: A second nut is screwed into the other end side of the bolt member projecting outside the other mold, and the sleeve and the pair of nuts are connected with the second nut and the first nut. The sleeve is permanently fixed by sandwiching the mold and fixing the sleeve to the pair of molds.

  According to this sleeve installation method, when the sleeve is installed between the molds, first, the sleeve and one mold are clamped by the first nut and the sleeve fixture that are screwed into the bolt member. The sleeve can be fixed to the formwork. Further, after that, the other mold is installed, and the second nut is screwed into the other end of the bolt member in which the bolt member protrudes outward from the other through hole provided in the other mold. Thus, by sandwiching the sleeve and the pair of molds by the second nut and the first nut, the sleeve can be fixed to the pair of molds. Thus, first, the sleeve is fixed to one mold, that is, the sleeve is fixed without installing the other mold. Thereafter, when the sleeve is fixed to the pair of molds, the fixing operation is performed from the outside of the molds. This facilitates a series of fixing operations of the sleeve to the formwork, and the sleeve can be easily installed between the formwork. Further, when the sleeve is fixed to the one mold, the sleeve and the one mold are sandwiched between the first nut and the sleeve fixture. Thereafter, when the sleeve is fixed to the pair of molds, the sleeve and the pair of molds are sandwiched between the second nut and the first nut. As a result, the sleeve can be fixed to one of the molds, and further to the pair of molds, so that the sleeve can be accurately placed between the molds.

  According to a sixth aspect of the present invention, the sleeve installation method according to the fifth aspect is the sleeve installation method according to the fifth aspect, wherein, in the second step, the other through hole is drilled after the other formwork is installed. It is formed using a drill. Therefore, in the drilling by this drilling drill, the sleeve fixing tool is provided with a receiving space for receiving the tip of the drilling drill in front of the female screw part so that the tip of the drilling drill does not interfere with the female screw part, In the first step, the other end of the bolt member is positioned with respect to the other mold so that the tip of the drilling drill does not interfere with the other end of the bolt member.

  According to a seventh aspect of the present invention, in the sleeve installation method according to the fifth or sixth aspect, in the first step, a sleeve fixing auxiliary tool is attached to and detached from one end of the sleeve. The sleeve is fitted to the sleeve fixing auxiliary tool so as to pass through the bolt member, thereby restricting the displacement of the sleeve with respect to the one mold.

  According to the sleeve device and the sleeve installation method according to the present invention, the sleeve can be easily and accurately installed between the molds by using the sleeve fixing tool.

It is an exploded sectional view of a sleeve device of one embodiment of this invention. Similarly, it is a perspective view of a sleeve device. Similarly, it is a perspective view of a sleeve fixture. Similarly, it is a perspective view of a sleeve fixing auxiliary tool. Similarly, it is sectional drawing which shows the 1st process of a sleeve installation method. Similarly, it is sectional drawing which shows the drilling process of the other through-hole in the 2nd process of a sleeve installation method. Similarly, it is sectional drawing which shows the 2nd process of a sleeve installation method. Similarly, it is sectional drawing which shows the 3rd process of a sleeve installation method. Similarly, it is sectional drawing which shows the formation process of the concrete wall by the placement of concrete after a 3rd process. Similarly, it is sectional drawing which shows the state which removed the mold, the sleeve fixing tool, the sleeve fixing auxiliary tool, etc. after formation of the concrete wall. FIG. 6 is a view corresponding to FIG. 5 of another embodiment of the present invention. Similarly, it is sectional drawing which shows the state which loosened the 1st nut. Similarly, it is equivalent to FIG. FIG. 6 is a view corresponding to FIG. 5 of still another embodiment of the present invention. Similarly, it is sectional drawing which shows the state which loosened the 1st nut. Similarly, it is equivalent to FIG. It is sectional drawing which shows installation of the conventional sleeve.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the sleeve apparatus and sleeve installation method concerning this invention is demonstrated based on drawing.

  1 to 10 show an embodiment of the present invention. Reference numeral 1 in the figure denotes a formwork. Reference numeral 2 denotes a concrete wall formed by placing concrete between a pair of facing molds 1 and projects downward from, for example, an outer wall, a partition wall, a foundation wall, or a ceiling in a building. It consists of other walls, such as walls that make up. 3 is a penetration part formed in the said concrete wall 2, for example, consists of a hole for letting a wiring and piping material (wiring material or piping material) pass. 4 is a sleeve device for forming the penetration part 3 in the concrete wall 2.

  The sleeve device 4 includes a sleeve 5 that is disposed between a pair of molds 1 and that internally constitutes the through portion 3, and a sleeve fixture 6 that fixes the sleeve 5 to the mold 1. The sleeve fixture 6 is fixed to be detachably fitted to the other end portion 5b of the sleeve 5 opposite to the one end portion 5a on the side of the one mold frame 1a of the pair of mold frames 1. It is a tool. The sleeve fixture 6 is engaged with the sleeve 5 so that the other end 5b of the sleeve 5 is closed and the fixture body 6a does not move in the direction toward the one end 5a of the sleeve 5. Engaging portion 6b. Here, the fixing member main body 6a can be penetrated by the bolt member 7 passing through the inside of the sleeve 5, and the female screw portion 8a to which the bolt member 7 is screwed or the female screw member 8 having the female screw portion 8a (in detail). , Nut) is provided with a female screw member accommodating portion 6c that immovably accommodates the sleeve 5 in the direction toward the one end 5a of the sleeve 5. In the illustrated embodiment, the fixture main body 6a includes the female screw member accommodating portion 6c, and the female screw member 8 is accommodated in the female screw member accommodating portion 6c. 6 is provided with the female screw portion 8a. The engaging portion 6b includes a flange 601 that protrudes from the fixture main body 6a so as to contact the end surface of the other end portion 5b of the sleeve 5.

  Therefore, the first nut 9 is provided on one end 7a side of the bolt member 7 that passes through the inside of the sleeve 5 and is screwed into the female screw portion 8a and protrudes outward through the through hole 1b provided in one mold 1a. So that the sleeve 5 and the one mold 1a can be clamped by the first nut 9 and the sleeve fixture 6, and then the sleeve 5 is clamped by the one mold 1a. A second nut 10 is screwed into the other end 7b side of the bolt member 7 protruding outward from another through hole 1d provided in the other mold 1c of the pair of molds 1 to be installed. The sleeve 5 and the pair of molds 1 (1a, 1c) can be held between the second nut 10 and the first nut 9.

  In addition to the sleeve 5 and the sleeve fixture 6, the sleeve device 4 includes a sleeve fixing auxiliary tool 11 that is detachably fitted to one end portion 5 a of the sleeve 5. The sleeve fixing auxiliary tool 11 includes an auxiliary tool body 11a that closes one end 5a of the sleeve 5. The auxiliary tool body 11a is provided with a through hole 11b through which the bolt member 7 passes. When the bolt member 7 passes through the through hole 11b, the displacement of the sleeve 5 with respect to the one mold 1a is regulated.

  Specifically, the sleeve 5 is made of, for example, a synthetic resin and includes a sleeve main body 501 and a bell mouth 502 having a through-hole formed therein as shown in FIG. And a bell mouth 502 are fitted and bonded to each end side. In the sleeve 5, the end of the sleeve body 501 on the side away from the bell mouth 502 is the one end 5 a, and the end of the bell mouth 502 on the side away from the sleeve body 501 is the other end. Part 5b. Further, a sealing tape 12 made of, for example, butyl rubber is wound around the outer peripheral surface of the sleeve 5 (specifically, the sleeve main body 501) for water stoppage between the sleeve 5 and the concrete wall 2.

  The sleeve fixture 6 is made of, for example, a synthetic resin, and is formed in a cylindrical shape so that the fixture main body 6 a is fitted into the sleeve 5 as shown in FIGS. 1 and 3. Specifically, the fixture main body 6 a is formed so as to expand so that the proximal end side opposite to the distal end inserted into the sleeve 5 becomes larger in diameter toward the front side according to the shape of the bell mouth 502. The flange 601 is provided so as to project radially from the base end of the fixture main body 6a, and the flange 601 contacts the end surface of the bell mouth 502 that is the end surface of the other end portion 5b of the sleeve 5. Touch.

  In addition, the sleeve fixture 6 (specifically, the fixture body 6a) has a female threaded portion 8a (shown in the drawing) with the tip of a drill 13 for forming another through hole 1d in the other mold 1c installed. In this configuration, a receiving space 6d for receiving the tip of the drilling drill 13 is provided in front of the female screw portion 8a (front side), that is, in front of the female screw member accommodating portion 6c so as not to interfere with the female screw member 8). Specifically, the sleeve fixture 6 has a hexagonal hole-shaped female screw member receiving portion for receiving the receiving space 6d and the female screw member 8 in order from the front side so as to penetrate through the fixture main body 6a at the axial center portion thereof. 6c and hole 6e are provided side by side. Then, the bolt member 7 passes between the hole 6e, the female screw portion 8a (specifically, the female screw member 8 accommodated in the female screw member accommodating portion 6c) and the receiving space 6d, so that the fixing member main body 6a, that is, the sleeve fixing tool. 6 is penetrated.

  The sleeve fixing auxiliary tool 11 is made of, for example, a synthetic resin, and as shown in FIGS. 1 and 4, the auxiliary tool main body 11 a is formed in a cylindrical shape so as to fit into the sleeve 5. . The sleeve fixing auxiliary tool 11 is provided with the through hole 11b so as to penetrate the axial center portion. Here, the through-hole 11b has a hexagonal hole-shaped nut accommodating portion 11c formed in a large diameter at the back thereof, but in the illustrated embodiment, no nut is accommodated in the nut accommodating portion 11c. Further, the sleeve fixing auxiliary tool 11 is an engagement projecting in the radial direction from the base end of the auxiliary tool body 11a so as to come into contact with the end surface of the one end portion 5a of the sleeve 5 in addition to the auxiliary tool body 11a. A flange 11d as a part is provided.

  The bolt member 7 is, for example, a full screw bolt in which a male screw is formed over its entire length, and has a length that penetrates the pair of molds 1a and 1c and further protrudes outside the molds 1a and 1c. Have.

  Next, a sleeve installation method using this sleeve device 4 will be described. In this sleeve installation method, in order to form a penetration part 3 in a concrete wall 2 formed by placing concrete between a pair of facing molds 1 (1a, 1c), the inside constitutes the penetration part 3 This is a sleeve installation method in which a sleeve 5 to be installed is installed between a pair of molds 1 (1a, 1c). This sleeve installation method includes each step from the first step to the third step as a construction procedure.

  First step: One mold 1a of a pair of molds 1 is installed, a bolt member 7 is passed through a through hole 1b provided in one mold 1a, and a sleeve 5 is inserted into the sleeve 5 The sleeve fixing tool 6 is disposed so that the bolt member 7 passes inside, and is detachably fitted to the other end portion 5b of the sleeve 5 opposite to the one end portion 5a on the one mold 1a side. The bolt member 7 is screwed into the female screw portion 8a (in the illustrated embodiment, the female screw member 8) provided in the first screw 7a and protrudes outward from the one mold 1a. The nut 9 is screwed, and the sleeve 5 and the one mold 1a are sandwiched between the first nut 9 and the sleeve fixture 6, and the sleeve 5 is fixed to the one mold 1a. 5 is temporarily fixed (see Fig. 5). ). That is, the sleeve 5 is supported on one mold 1a.

  Second step: The other mold 1c of the pair of molds 1 is installed so as to sandwich the sleeve 5 between the one mold 1a, and the other through-hole 1d provided in the other mold 1c. The bolt member 7 is moved in the axial direction of the bolt member 7 by an operation from the outside of the mold 1 so that the other end 7b of the bolt member 7 protrudes outward (see FIGS. 6 and 7).

  Third step: The second nut 10 is screwed into the other end 7b side of the bolt member 7 projecting outside the other mold 1c, and the sleeve 5 is connected with the second nut 10 and the first nut 9. Further, the sleeve 5 is permanently fixed by sandwiching the pair of molds 1 (1a, 1c) and fixing the sleeve 5 to the pair of molds 1 (1a, 1c) (see FIG. 8).

  By the way, in the illustrated embodiment, in the first step, as shown in FIG. 5, a sleeve fixing auxiliary tool 11 is detachably fitted to one end portion 5 a of the sleeve 5, and the sleeve fixing auxiliary tool 11 is provided. By allowing the bolt member 7 to pass through the formed through hole 11b, the displacement of the sleeve 5 with respect to the one mold 1a is regulated.

  In the second step, as shown in FIG. 6, the other through hole 1d is formed by using the drill 13 after the installation of the other mold 1c. When drilling with the drill 13, the sleeve fixing tool 6 is positioned in front of the female thread 8 a (female screw member 8) so that the tip of the drill 13 does not interfere with the female thread 8 a (female screw member 8). In the first step, the other end 7b of the bolt member 7 is provided so that a receiving space 6d for receiving the tip of the drill drill 13 is provided and the tip of the drill drill 13 does not interfere with the other end 7b of the bolt member 7. The other mold 1c is placed in a position.

  In the second step, the bolt member 7 is moved in the axial direction by an operation from the outside of the mold 1 so that the other end 7b of the bolt member 7 protrudes from the other through hole 1d. The bolt member 7 can be moved only by an operation from the outside of one mold 1a, or by an operation from the outside of one and the other molds 1a and 1c. You may move only by operation from the outer side of the frame 1c.

  In order to move the bolt member 7 only by an operation from the outside of one mold 1a, the first nut 9 is slightly loosened to release the tightening of the first nut 9 and the female screw portion 8a by a so-called double nut. Then, the bolt member 7 is moved while being screwed, that is, screwed, in a state where the first nut 9 is held so as not to rotate (for example, held by friction with the one mold 1a). As another method, until the first nut 9 is separated from the one mold 1a to some extent (the bolt member 7 is long enough to protrude outward from the other mold 1c (specifically, the other through hole 1d). ) The first nut 9 is loosened, and then the bolt member 7 is moved so as to rotate, that is, advance. Further, this series of operations may be repeated step by step, that is, little by little.

  In order to move the bolt member 7 by an operation from the outside of one and the other molds 1a and 1c, the first nut 9 is slightly loosened from the outside of the one mold 1a, and from the outside of the other mold 1c, Grasping the other end of the bolt member 7 through another through hole 1d so that the tool is locked to a tool locking portion (not shown) provided in advance on the end surface of the other end 7b of the bolt member 7 Thus, the bolt member 7 is moved by being screwed, that is, screwed by the tool (in this case, the first nut 9 is held so as not to rotate due to friction with the one mold 1a. ).

  In order to move the bolt member 7 only by an operation from the outside of the other mold 1c, in the first step, the first nut 9 is not tightened but is tightened moderately. Then, the other end 7b of the bolt member 7 is grasped with a tool through the other through hole 1d of the other mold 1c, and the bolt member 7 is moved by screwing, that is, screwing, by the tool ( At this time, the first nut 9 is held so as not to rotate due to friction with the one mold 1a).

  In addition, after the sleeve 5 is installed between the pair of molds 1 (1a, 1c) in the third step, concrete is placed between the pair of molds 1 (1a, 1c), and the concrete wall 2 is placed. (See FIG. 9). Thereafter, leaving the sleeve 5, the molds 1a and 1c, the sleeve fixing tool 6, the sleeve fixing auxiliary tool 11, the bolt member 7 and the like are removed, thereby forming the through portion 3 penetrating the concrete wall 2 (FIG. 10). reference).

  Next, the function and effect of the sleeve device 4 and the sleeve installation method configured as described above will be described. According to the sleeve device 4 and the sleeve installation method, when the sleeve 5 is installed between the molds 1 (1a, 1c), first, the first nut 9 and the sleeve fixture 6 that are screwed into the bolt member 7 are used. By sandwiching the sleeve 5 and the one mold 1a, the sleeve 5 can be fixed to the one mold 1a (see FIG. 5). After that, the other mold 1c is installed, and the bolt member 7 is protruded outward from the other through hole 1d provided in the other mold 1c. The nuts 2 are screwed together, and the sleeve 5 and the pair of molds 1 (1a, 1c) are sandwiched between the second nut 10 and the first nut 9, so that the pair of molds 1 The sleeve 5 can be fixed to (1a, 1c) (see FIG. 8). In this manner, first, the sleeve 5 is fixed to one mold 1a, that is, the sleeve 5 is fixed without installing the other mold 1c, thereby facilitating the fixing operation (FIG. 5). Then, when fixing the sleeve 5 to the pair of molds 1 (1a, 1c) thereafter, the fixing work is facilitated by performing the fixing work from the outside of the molds 1a, 1c. (See FIGS. 7 and 8). Thus, a series of fixing operations of the sleeve 5 to the molds 1a and 1c is facilitated, and the sleeve 5 can be easily installed between the molds 1a and 1c.

  When the sleeve 5 is fixed to the one mold 1a, the sleeve 5 and the one mold 1a are sandwiched between the first nut 9 and the sleeve fixture 6 so that the sleeve 5 It can fix to the formwork 1a. When the sleeve 5 is then fixed to the pair of molds 1 (1a, 1c), the second nut 10 and the first nut 9 are used to connect the sleeve 5 and the pair of molds 1 (1a). By sandwiching 1c), this sleeve 5 can be fixed to the pair of molds 1 (1a, 1c). Thus, since the sleeve 5 can be fixed to one mold 1a, and further to the pair of molds 1a, 1c, the sleeve 5 can be accurately placed between the molds 1a, 1c.

  That is, by using the sleeve fixing tool 6, a series of fixing operations of the sleeve 5 to the mold 1 can be facilitated, and the sleeve 5 can be fixed to the mold 1, whereby the sleeve 5 can be fixed to the mold 1. 1 (1a, 1c) can be installed easily and accurately.

  Further, when the second nut 10 is screwed into the other end 7b side of the bolt member 7 protruding outside the other mold 1c, the bolt member 7 includes the female screw portion 8a (female screw member 8) and the first screw member 8b. The nut 9 is prevented from rotating by a so-called double nut action due to both screwing. For this reason, the tightening by the second nut 10 can be easily performed.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the penetration part 3 may be used for other purposes, such as a hole for ventilation, instead of a hole for passing wiring / piping material.

  The sleeve 5 is formed by adhering the sleeve body 501 and the bell mouth 502 to each other, but the separate bell mouth 502 is eliminated and the end of the sleeve body 501 is molded into a bell mouth shape. Also good. Regardless of whether the sleeve 5 is a two-piece body or a single body, each end 5a, 5b has a bell mouth shape or a straight shape with no curved surface unlike the bell mouth shape ( (Cylindrical shape).

  The sleeve 5 is left embedded in the concrete wall 2 formed by placing concrete between the pair of molds 1 (1a, 1c). For example, the sleeve 5 is made of paper. Then, after the concrete wall 2 is formed, the sleeve 5 may be removed by tearing or the like.

  The fixing tool body 6a of the sleeve fixing tool 6 includes a female screw member accommodating portion 6c that accommodates the female screw member 8. The female screw part 8a of the female screw member 8 corresponds to the fixing tool main body 6a (that is, the sleeve fixing tool). 6) It may be provided integrally with itself. That is, without using the female screw member 8, for example, the female screw portion 8a may be formed on the inner surface of the hole 6e.

  The sleeve fixture 6 includes a flange 601. The flange 601 serves as an engaging portion 6b and comes into contact with the end surface of the sleeve 5. An outer peripheral surface whose diameter increases toward the front side of the fixture body 6a is related. Alternatively, a step portion may be provided on the inner surface of the sleeve 5, and an engaging portion may be provided on the fixture main body 6a so as to contact the step portion. Similarly, with respect to the sleeve fixing auxiliary tool 11, a part of the outer peripheral surface of the auxiliary tool main body 11 a may have a large diameter, and the outer peripheral surface having the large diameter may be an engaging portion. An engaging portion that abuts on the step provided on the auxiliary tool body 11a may be provided.

  In the second step, when the bolt member 7 is moved in the axial direction, the bolt member 7 may be moved straight without being screwed. Below are two examples of this.

  As a first example, an example in which the bolt member 7 is moved straight together with the female screw member 8 will be described with reference to FIGS. In this example, as shown in FIG. 11, on the front side (front side) of the female screw member 8, the bolt member 7 protrudes outward from the other mold 1c (specifically, the other through hole 1d). 7 together with a space X1 in which the female screw member 8 can move. Therefore, as shown in FIG. 12, after the other mold 1c is installed, the first nut 9 is separated from the one mold 1a to some extent from the outside of the one mold 1a (the bolt member 7 is connected to the other mold 1a). The first nut 9 is loosened in a frame 1c (a length sufficient to project outward from the other through hole 1d). Then, as shown in FIG. 13, the bolt member 7 is pushed from the outside of one mold 1a and moved straight.

  Next, as a second example, an example in which the bolt member 7 is moved straight together with the sleeve fixture 6 and the female screw member 8 will be described with reference to FIGS. In this example, as shown in FIG. 14, the female screw member 8 is formed so as to be integrated with the sleeve fixture 6, for example, the sleeve fixture 6 is formed by inserting the female screw member 8, and The sleeve fixture 6 is inserted into the other end 5 b of the sleeve 5 to the back. At this time, the sleeve fixing tool 6 has an outer peripheral rear end serving as an engaging portion 6b, and the engaging portion 6b engages with a portion where the sleeve 5 changes to a small diameter, so that the sleeve side, that is, the sleeve. 5 is stopped from moving toward one end 5a. Then, on the front side (front side) of the sleeve fixture 6, the sleeve fixture 6 and the female screw together with the bolt member 7 so that the bolt member 7 protrudes outward from the other mold 1c (specifically, the other through hole 1d). A space X2 in which the member 8 can move is opened. Therefore, as shown in FIG. 15, after installing the other mold 1c, the first nut 9 is separated from the one mold 1a to some extent from the outside of the one mold 1a (the bolt member 7 is connected to the other mold 1a). The first nut 9 is loosened in a frame 1c (a length sufficient to project outward from the other through hole 1d). Then, as shown in FIG. 16, the bolt member 7 is pushed from the outside of one mold 1a and moved straight. In this example, the sleeve 5 does not have the bell mouth 502 and is configured only by the sleeve main body 501.

  In addition, the other through-hole 1d provided in the other mold 1c of the pair of molds 1 (1a, 1c) is not installed even if it is not opened after the other mold 1c is installed. It may be opened. In this case, the sleeve fixture 6 may not be provided with the receiving space 6d. Furthermore, in this case, the other end 7b of the bolt member 7 may protrude from the other end 5b of the sleeve 5. Here, the operation of moving the bolt member 7 in the axial direction is performed from the outside of the one mold 1a or the other mold 1c that is not installed (that is, the other end 5b of the sleeve 5). It is sufficient to start from the person who can work easily.

  The sleeve device 4 includes a sleeve fixing auxiliary tool 11 in addition to the sleeve 5 and the sleeve fixing tool 6. However, the sleeve fixing auxiliary tool 11 may not be provided.

  In the sleeve device 4 of each embodiment, the sleeve 5 is fixed to one mold 1a by clamping in the first process, the second process is limited to the installation of the other mold 1c, and the third process is performed. The process may be omitted. That is, the sleeve 5 is fixed (temporarily fixed) to one mold 1a by the first process, and the sleeve 5 is fixed to both molds 1a, 1c by the third process after the second process (main book). Of course, it is possible to use it in such a way that the sleeve 5 is fixed in the first step so that it can withstand the concrete pouring pressure. A method of use in which the protrusion of the bolt member 7 from the frame 1c and the clamping from both sides of the molds 1a and 1c by the third step is also possible.

DESCRIPTION OF SYMBOLS 1 Formwork 1a One formwork 1b Through-hole 1c Other formwork 1d Other through-holes 2 Concrete wall 3 Through-part 4 Sleeve apparatus 5 Sleeve 5a One end part 5b The other end part 6 Sleeve fixing tool 6a Fixing tool main body 6b Engagement part 6c Female thread member accommodating part 6d Receiving space 601 Flange 7 Bolt member 7a One end 7b Other end 8 Female thread member 8a Female thread part 9 First nut 10 Second nut 11 Sleeve fixing auxiliary tool 11a Auxiliary tool main body 11b Through hole 13 Drill

Claims (7)

A sleeve device for forming a penetration in a concrete wall formed by placing concrete between a pair of facing molds,
A sleeve that is disposed between the pair of molds and has an inside that forms the penetrating portion; and a sleeve fixing tool for fixing the sleeve to the mold,
The sleeve fixing tool is a fixing tool detachably fitted to the other end of the sleeve opposite to one end of the pair of molds on the side of one mold, A fixture main body that closes the other end, and an engagement portion that engages the sleeve so that the fixture main body does not move in the direction of one end of the sleeve;
The fixing body is capable of penetrating a bolt member passing through the inside of the sleeve, and a female screw portion to which the bolt member is screwed, or a female screw member having the female screw portion in a direction toward one end of the sleeve. A female screw member accommodating portion that is immovably accommodated,
A first nut is screwed into one end side of the bolt member that passes through the sleeve and is screwed into the female screw portion and protrudes outward through a through hole provided in the one mold. The sleeve and the one mold can be sandwiched between the first nut and the sleeve fixture; and
Thereafter, the other end side of the bolt member protrudes outward from another through-hole provided in the other mold of the pair of molds that is installed so as to sandwich the sleeve between the one mold. The sleeve device is characterized in that a second nut is screwed and the sleeve and the pair of molds can be sandwiched between the second nut and the first nut.   In the sleeve fixing tool, the drilling drill is formed in front of the female screw part so that the tip of the drilling drill for forming the other through-hole in the other formwork installed does not interfere with the female screw part. The sleeve device according to claim 1, wherein a receiving space for receiving the tip of the sleeve is provided.   3. The sleeve device according to claim 1, wherein the engaging portion includes a flange projecting from the fixture main body so as to contact an end surface of the other end portion of the sleeve. A sleeve fixing auxiliary tool that is detachably fitted to one end of the sleeve;
The sleeve fixing auxiliary tool includes an auxiliary tool main body that closes one end of the sleeve, and the auxiliary tool main body is provided with a through-hole through which the bolt member passes, and the through-hole is used as the bolt member. The sleeve device according to any one of claims 1 to 3, wherein a slippage of the sleeve with respect to the one mold is regulated by penetrating the sleeve. In order to form a through-hole in a concrete wall formed by placing concrete between a pair of facing molds, a sleeve is installed between the pair of molds. A method,
One of the pair of molds is installed, a bolt member is passed through a through hole provided in the one mold, and the sleeve passes through the sleeve so that the bolt member passes through the sleeve. The bolt member is screwed into a female screw portion provided in a sleeve fixing tool that is detachably fitted to the other end portion of the sleeve opposite to the one end portion on the one formwork side. Then, a first nut is screwed into one end of the bolt member projecting outside the one mold, and the sleeve and the one mold are clamped by the first nut and the sleeve fixture. Thus, the first step of temporarily fixing the sleeve by fixing the sleeve to the one mold,
The other mold of the pair of molds is installed so that the sleeve is sandwiched between the one mold and the other end of the bolt member is outside from the other through hole provided in the other mold A second step of moving the bolt member in the axial direction of the bolt member by an operation from the outside of the mold,
A second nut is screwed into the other end of the bolt member projecting outside the other mold, and the sleeve and the pair of molds are sandwiched between the second nut and the first nut. And a third step of permanently fixing the sleeve by fixing the sleeve to the pair of molds. In the second step, the other through hole is formed using a drilling drill after the installation of the other mold,
In the drilling by this drilling drill, the sleeve fixing tool is provided with a receiving space for receiving the tip of the drilling drill in front of the female screw part so that the tip of the drilling drill does not interfere with the female screw part, and The said other end of the said bolt member is refrained from the said other formwork in the said 1st process so that the front-end | tip of the said drill drill may not interfere with the other end of the said bolt member, It is characterized by the above-mentioned. 5. The sleeve installation method according to 5.   In the first step, a sleeve fixing auxiliary tool is detachably fitted to one end of the sleeve, and the bolt member is passed through a through-hole provided in the sleeve fixing auxiliary tool, whereby the one The sleeve installation method according to claim 5 or 6, wherein a displacement of the sleeve with respect to a mold is regulated.

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