JP2006299715A - Separator mounting fixture, fastener for separator mounting fixture and separator mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separator mounting fixture for mounting a separator holding a form and a reinforced rod of a cast-in-place concrete construction at a predetermined position easily and strongly in a short time. <P>SOLUTION: The separator mounting fixture 11 comprises an upper plate 12 and left and right side plates 13, 14 formed by folding of left and right sides of the upper plate 12 and vertically extended downward from the left and right sides. First and second through holes 15, 16 are formed near both ends of the upper plate 12 and lateral holes 17, 17... are formed to face to each other at each center and both sides of the center of the left and right side plates and recess parts 18, 18 cut out almost in a semicircular shape at the lower end center parts of the left and right side plates 13, 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a separator mounting bracket, a separator mounting bracket fastener, and a separator mounting structure for mounting a separator for holding a formwork and a reinforcing bar of a cast-in-place reinforced concrete structure in place.

  As a conventional separator mounting method of this kind, for example, in the construction of a structure having a large cross section, a method of directly welding the separator to the reinforcing bar of the structure has been adopted.

  Further, as shown in FIG. 11, in a separator mounting structure 4 for attaching a separator 3 for holding a formwork 1 and a reinforcing bar 2 of a cast-in-place reinforced concrete structure in place, an upper plate portion 5 and an upper plate portion 5 The left and right side sides of the left and right side plate portions 6 and 7 are bent downward from the left and right side sides, and the left and right side plate portions 6 and 7 are cut out in a substantially semicircular shape at the center of the lower end. 8 and 8 are formed, and a separator mounting bracket 9 having through holes (not shown) opened in the vicinity of both ends of the upper plate portion 5 is fixed to the rebar 2 with a U bolt 10, and one end of the mold 1 The other end of the separator 3 that is fixed to the reinforcing bar 2 side is welded to the upper plate portion 5 of the separator mounting bracket 9, the separator 3 is fixed to the separator mounting bracket 9, and is fixed to the separator 3. The frame 1 and the reinforcing bar 2 fixed to the separator mounting bracket 9 are in a predetermined position. Separator mounting structure for coupling to hold the already known.

  Patent Document 1 also describes a reinforcing bar mounting type separator bolt and its mounting structure, in which a receiving portion that is bent into a mountain shape and engages with the groove of the reinforcing bar is provided at the center of both hems. The angle iron plate is fastened to the reinforcing bar with fastening bolts, and a screw bolt is welded to the angle iron plate in a direction substantially perpendicular to the top edge of the angle iron plate, and a separator bolt, one end of which is fixed to the panel, is screwed to the screw rod. A separator bolt mounting structure configured as described above is described.

Further, Patent Document 2 describes a connecting metal fitting of a reinforcing bar and a separator, which includes a main body, a bolt, and a rotating shaft, and the main body has an upper portion having a through screw hole and a substantially right angle from one end of the upper portion. And a V-shaped reinforcing bar receiving portion that is connected from the free end of the side portion to the upper side and recessed on the side facing the upper side is described.
JP 2003-147960 A JP 2003-172027 A

  The above-described method of directly welding the separator to the reinforcing bar of the structure or the separator mounting structure shown in FIG. 1 is to weld the separator to the reinforcing bar or the separator mounting bracket.

  However, since the welding is heated at a high temperature of 1000 ° C. or higher, there is a possibility that the strength of the reinforcing bars, separators, or components of the separator mounting brackets at the welded portions may change and the strength may decrease.

  In addition, after removing the formwork, the separator or separator mounting bracket remains in the cast concrete. However, due to earthquakes that have occurred frequently in recent years, the connection location due to welding of the separator or separator mounting bracket is damaged. The structure may be damaged or destroyed.

  Furthermore, there is a problem that welding a large number of separators requires a lot of work and time.

  And also in patent document 2, there exists a part to weld and the same problem as the above-mentioned occurs.

  Patent Document 1 also welds a screw rod to a chevron iron plate, and the same problem as described above occurs.

  However, Patent Document 1 also describes a method in which a separator bolt is directly screwed into a female screw hole screwed into an angle iron plate and connected. In this case, since the separator bolt is configured to be rotatable, there is a problem that the configuration becomes complicated. In addition, the separator bolt is screwed to the angle iron plate or the length of the separator bolt is adjusted. There is a problem in that the work of rotating the machine occurs and takes a long time.

  In view of the above situation, the present invention provides a separator mounting bracket and a separator mounting bracket fastener capable of easily and firmly mounting a separator for holding a formwork and a reinforcing bar of a cast-in-place concrete structure in a predetermined position in a short time. And a separator mounting structure.

In order to solve the above problems, the present invention provides the following configurations.
The invention according to claim 1 is a separator mounting bracket comprising an upper plate portion, and left and right side plate portions that are bent downwardly from the left and right side sides by bending the left and right side sides of the upper plate portion, First and second through holes are opened in the vicinity of both ends of the upper plate portion, and lateral holes are opened in the center portion of the left and right side plate portions and left and right sides thereof, respectively. Provided is a separator mounting bracket in which a notch portion that is notched in a substantially semicircular shape is formed in the center portion of the lower end.

  In the invention according to claim 2, the first through hole opened in the upper plate portion is formed in a long hole shape, the second through hole is a round hole, and the length of the upper plate portion from the round hole. The upper plate is formed with a slot having a width smaller than the diameter of the round hole, and the upper plate portion is protruded upward in the vicinity of the outer end portions of the first and second through holes. 2. A separator mounting bracket according to claim 1, further comprising a protrusion for preventing a shift of a separator mounting bracket fastener attached to the portion.

  According to a third aspect of the present invention, there is provided a hook portion on one end side that is formed in a hook shape with a rectangular parallelepiped member disposed laterally at the tip portion, a male screw portion on the other end side that can be fitted with a nut, and a flexible portion in the center portion. 3. A separator mounting bracket fastener, wherein the hook portion and the male screw portion are fixed to both ends of the connecting body, wherein the hook portion is oriented in the longitudinal direction of the rectangular parallelepiped member. It is possible to pass through the first through hole when aligned in the longitudinal direction of the first through hole of the separator mounting bracket described above, and the nut is formed so as to be restricted when the direction is rotated by 90 degrees. The separator mounting bracket fastener is characterized by being formed so as to be able to pass through the round hole of the described separator mounting bracket and to be restricted from passing through the slot.

  According to a fourth aspect of the present invention, the notch portion of the separator mounting bracket according to the second aspect is placed on a reinforcing bar, and the hook portion of the separator mounting bracket fastener according to the third aspect is used as the first portion of the separator mounting bracket. After passing through the through-hole from below, the separator mounting bracket fastener is rotated by approximately 90 degrees, the connecting body is bent, the rebar is wound, and the male screw portion fitted with a nut is connected to the second through-hole. The male screw part is moved to the groove hole side together with the nut, the nut is tightened to fix the separator mounting bracket to the reinforcing bar, and the left and right side plates of the separator mounting bracket The separator is attached to the separator by tightening with a nut screwed into a male screw engraved on the separator. Secure to bracket There is provided a separator mounting bracket mounting structure, characterized by.

  According to a fifth aspect of the present invention, the notch portion of the separator mounting bracket according to the second aspect is placed on a reinforcing bar, the reinforcing bar is sandwiched between U-bolts, and both ends of the U-bolt are connected to the first and second ends. Each through hole is penetrated, both ends of the U-bolt are tightened with nuts, the separator mounting bracket is fixed to the reinforcing bar, and one end is fixed to the lateral frame of the left and right side plate portions of the separator mounting bracket. The separator mounting bracket mounting is characterized in that the separator is fixed to the separator mounting bracket by passing through the other end of the extending separator and tightening with a nut screwed into a male screw portion engraved in the separator. Provide structure.

  According to the first aspect of the present invention, the separator mounting comprising the upper plate portion and the left and right side plate portions which are bent downward from the left and right side sides and bent from the left and right side sides of the upper plate portion. A first through hole and a second through hole are opened in the vicinity of both ends of the upper plate part, respectively, and horizontal holes are opened in the center part of the left and right side plate parts and left and right sides thereof in opposite directions, Separator mounting brackets each having a substantially semi-circular cutout formed at the center of the lower end of each of the left and right side plate portions are provided, so that the formwork and rebar of the on-site concrete structure are held in place. It is possible to provide a separator mounting bracket capable of easily and firmly mounting the separator in a short time.

  According to a second aspect of the present invention, the first through hole opened in the upper plate portion is formed in a long hole shape, and the second through hole is a round hole and the upper plate portion is formed from the round hole. In the vicinity of the outer end portions of the first and second through holes of the upper plate portion, and projecting upwardly, the groove portion having a width smaller than the diameter of the round hole. In addition to the effect of the invention of claim 1, the separator mounting bracket fastener can be easily mounted and the separator can be easily mounted since the shift protrusion for regulating the shift of the separator mounting bracket fastener attached to the upper plate portion is formed. Tightening with the mounting bracket fastener is facilitated, and separation due to deviation of the attached separator mounting bracket fastener can be prevented.

  According to the third aspect of the present invention, a rectangular parallelepiped member is horizontally disposed at the tip, and is formed in a hook shape on one end side, a male threaded portion on the other end side on which the nut can be attached, and a central portion. A separator mounting bracket fastener comprising a flexible coupling body, wherein the hook portion and the male screw portion are fixed to both ends of the coupling body, wherein the hook portion requests the longitudinal direction of the rectangular parallelepiped member. The separator mounting bracket according to Item 2 is formed so as to be able to pass through the first through hole when aligned in the longitudinal direction of the first through hole, and to be restricted from passing when the direction is rotated 90 degrees, and the nut is claimed. The separator mounting bracket fastener that can pass through the round hole of the separator mounting bracket according to Item 2 and that is formed so as to be restricted from passing through the groove hole is provided, so that it is easy to mount the separator mounting bracket fastener. With separator Conclusion of with bracket is easy.

  According to invention of Claim 4, the said notch part of the separator attachment metal fitting of Claim 2 is mounted on a reinforcing bar, The hook part of the separator attachment metal fastener of Claim 3 is made into this separator attachment metal fitting. After passing through the first through-hole from below, the separator mounting bracket fastener is rotated by approximately 90 degrees, the connecting body is bent, the rebar is wound, and the male screw portion fitted with a nut is connected to the second threaded portion. The inside of the through hole is penetrated together with the nut, the male screw part is moved together with the nut to the groove hole side, the nut is tightened to fix the separator mounting bracket to the reinforcing bar, and the separator mounting bracket One end of the separator is fixed to the mold, and the other end of the separator extends through the horizontal hole of the left right plate, and the separator is tightened by a nut screwed into a male thread formed on the separator. Separator mounting bracket Since the separator mounting bracket mounting structure fixed to the wall is provided, the separator that holds the formwork and the reinforcing bar of the in-situ concrete structure in place using the separator mounting bracket and the separator mounting bracket fastener can be easily and shortly formed. A separator mounting bracket mounting structure that can be firmly mounted in time can be provided.

  According to invention of Claim 5, the said notch part of the separator mounting bracket of Claim 2 is mounted on a reinforcing bar, the said reinforcing bar is clamped by a U bolt, and both ends of this U bolt are said 1st, Each of the U-bolts is passed through the second through-holes, and both ends of the U-bolts are tightened with nuts to fix the separator mounting bracket to the reinforcing bar. Provided with a separator mounting bracket mounting structure that penetrates the other end of the separator that is attached and extends, and is fixed to the separator mounting bracket by tightening with a nut screwed into a male thread portion engraved in the separator Therefore, using a separator mounting bracket and U bolt, a separator that can easily and firmly attach a separator that holds a formwork and a reinforcing bar of a concrete cast-in-place structure in place in a short time To provide a mounting bracket mounting structure, since use of relatively inexpensive U-bolt, it is possible to contribute to cost reduction.

Hereinafter, embodiments of the present invention will be described with reference to the drawings showing examples.
1 and 2, reference numeral 11 denotes a separator mounting bracket according to the present invention. The separator mounting bracket 11 is formed by bending the upper plate portion 12 and the left and right sides of the upper plate portion 12 from the left and right sides. It consists of left and right side plate portions 13 and 14 that hang downward, and first and second through holes 15 and 16 are opened near both ends of the upper plate portion 12, respectively. .. And lateral holes 17, 17... Are opened to the left and right sides of the respective portions, and cutout portions 18, 18 that are cut in a substantially semicircular shape at the center of the lower ends of the left and right side plate portions 13, 14, respectively. Is formed.

  And the 1st through-hole 15 pierced by the said upper board part 12 is formed in the shape of a long hole, and the 2nd through-hole 16 is the longitudinal direction of the upper board part 12 from the round hole 19 and the round hole 19. It is formed from a groove hole 20 that extends and has a smaller width than the diameter of the round hole 19, and the vicinity of the outer end portions of the first and second through holes 15, 16 of the upper plate portion 12 protrude upward, Displacement prevention protrusions 21 and 22 for restricting displacement of a later-described separator mounting bracket fastener (not shown) attached to the portion 12 are formed.

  In FIG. 3, reference numeral 31 denotes a separator mounting bracket fastener according to the present invention. The separator mounting bracket fastener 31 is a hook portion on one end side in which a rectangular parallelepiped member 32 is laterally formed at a tip portion and formed in a hook shape. 33, a male thread portion 35 on the other end side on which the nut 34 can be freely attached, and a connecting body 36 formed of a flexible wire or hard vinyl chloride and disposed at the center portion. A screw portion 35 is fixed to both ends of the coupling body 36, and the hook portion 33 has a longitudinal direction of the rectangular parallelepiped member 32 in accordance with the first through hole (see FIG. 1) of the separator mounting bracket (11 in FIG. 1). 1 is formed so as to be able to pass through the first through hole when the direction is rotated by 90 degrees and the passage is restricted, and the nut 34 is formed of the separator mounting bracket (FIG. 1). In 11) circle And can pass through the (19 In FIG. 1) are formed so as to be restricted passage of slots (20 In FIG. 1)

  Thus, as shown in FIG. 4, when the separator mounting bracket 11 and the reinforcing bar 41 are fastened using the separator mounting bracket fastener 31, first, the notches 18 and 18 of the separator mounting bracket 11 are connected to the reinforcing bar. 41, the hook portion 33 of the separator mounting bracket fastener 31 is aligned with the longitudinal direction of the rectangular parallelepiped member 32 of the hook portion 33 in the longitudinal direction of the first through hole 15 of the separator mounting bracket 11, and the hook After penetrating the portion 33 from below the first through hole 15, the separator mounting bracket fastener 31 is rotated by approximately 90 degrees, the connecting body 36 is bent, and the reinforcing bar 41 is wound, and as shown by the arrow in the drawing, the nut The male threaded portion 35 with 34 is passed through the round hole 19 of the second through hole 16 together with the nut 34, and the male threaded portion 35 together with the nut 34 is moved toward the slot 20, and the nut 34 Clamped, as shown in FIGS. 5 and 6, to secure the separator mounting bracket 11 to the reinforcing bar 41.

  FIG. 7 shows a method of fastening the separator mounting bracket 11 and the reinforcing bar 41 using the separator mounting bracket fastener 31 and a method of fixing the separator 42 to the separator mounting bracket 11.

  The method for fastening the separator mounting bracket 11 and the reinforcing bar 41 using the separator mounting bracket fastener 31 is as described above. When the separator 42 is fixed to the separator mounting bracket 11, the left and right side plates of the separator mounting bracket 11 are fixed. One end of each separator 13 and 14 is inserted into the left and right lateral holes 17 and 17 and the other end of the separator 42 extending while being fixed to a mold (not shown) is passed through. As shown in FIG. The left and right side plate portions 13 and 14 of the separator mounting bracket 11 are fastened in a clamped state by nuts 44 and 44 screwed into the male screw portion 43 engraved in the above, and the separator 42 is fixed to the separator mounting bracket 11.

  In FIG. 9, reference numeral 46 denotes a completed separator mounting bracket mounting structure 46. The separator mounting bracket mounting structure 46 has the notch 18 of the separator mounting bracket 11 placed on the reinforcing bar 41, and the separator mounting bracket 46. Using the bracket fastener 31, the separator mounting bracket 11 is fixed to the reinforcing bar 41 by the method described above, and the other end of the separator 42 is passed through the left and right side plate portions 13, 14 of the separator mounting bracket 11 by the method described above. The separator 42 is fixed to the separator mounting bracket 11 by screwing 44.

  In addition, as shown in FIG. 9, the formwork 45 and 45 of a normal cast-in-place concrete structure are often disposed on both sides of the rebars 41, 41, and in this case. In this case, the separators 42, 42,... Extending from the molds 45, 45 on both sides are passed through the lateral holes 17, 17 ... of the left and right side plate portions 13, 14 of the separator mounting brackets 11, 11,. Secure with. The separator mounting bracket 11 can fix 1 to 3 separators 42.

  And depending on the construction scale of the reinforcing bar 41 and the molds 45, 45, the reinforcing bar 41 and the molds 45, 45 are provided by the separator mounting bracket mounting structures 46, 46... Using the appropriate number of the separator mounting brackets 11, 11,. Are held in place.

  Thus, the separator mounting bracket 11 can easily and firmly attach the separator 42 for holding the formwork 45 and the reinforcing bar 41 of the in-situ reinforced concrete structure in a predetermined position.

  In the separator mounting bracket 11, the first through hole 15 is formed in a long hole shape, the second through hole 16 is formed from a round hole 19 and a narrow groove hole 20, and the first and second holes are formed. Since the protrusions 21 and 22 are formed in the vicinity of the outer end portions of the through holes 15 and 16, the attachment of the separator mounting bracket fastener 31 and the fastening by the separator mounting bracket fastener 31 are facilitated, and the attached separator Detachment due to displacement of the mounting bracket fastener 31 can also be prevented.

  Further, the separator mounting bracket fastener 31 is formed so that the hook portion 33 can pass through the first through hole 15 and is restricted from passing when the direction is rotated 90 degrees. Since it is formed so that passage of the slot 20 is restricted, the attachment to the separator mounting bracket 11 and the fastening of the separator mounting bracket 11 are easy.

  Furthermore, since the separator 42 is configured to fix the separator 42 to the separator mounting bracket 11 by nuts 44 and 44 screwed to the front end portion of the separator 42, by adjusting the nuts 44 and 44, The mold 45 can be held in an optimum state with respect to the distance between the mold 45 and the reinforcing bar 41, the inclination of the mold 45, and the like. The separator mounting bracket 11 can be fixed with 1 to 3 separators.

  The separator mounting bracket mounting structure 46 easily uses the separator mounting bracket 11 and the separator mounting bracket fastener 31 to provide the separator 42 for holding the formwork 45 and the reinforcing bar 41 of the in-situ concrete structure in place. And the structure which can be firmly attached in a short time can be provided.

  That is, the separator mounting bracket mounting structure 46 has no welded portion, and therefore does not cause deterioration of the material due to welding, and becomes strong. The separator mounting bracket 11 constituting the separator mounting bracket mounting structure 46 and the separator mounting The reinforced concrete structure from which the formwork after the construction in which the bracket fastener 31 and the separator 42 remain is removed has a strength capable of withstanding a large earthquake by the above-described strong separator mounting bracket mounting structure 46.

  FIG. 10 shows a separator mounting bracket mounting structure 52 in the case where a U bolt 51 is used instead of the separator mounting bracket fastener (31 in FIG. 5), and can be applied to the separator mounting bracket 11. it can.

  When the U bolt 51 is used for the separator mounting bracket mounting structure 52, the steel bar 41 is sandwiched between the U bolt 51, the both ends of the U bolt 51 are passed through the first and second through holes 15 and 16, respectively, and the U bolt Both ends of 51 are tightened with nuts 53, 53, and the separator mounting bracket 11 is fixed to the reinforcing bar 41.

  Thus, also in the separator mounting bracket mounting structure 52, the separator mounting bracket 11 and the U bolt 51 are used to connect the formwork (45 in FIG. 9) and the reinforcing bar 41 of the in-situ concrete structure. The separator held in position (42 in FIG. 9) can be easily and firmly attached in a short time, and in this case, the relatively inexpensive U-bolt 51 is used, which can contribute to cost reduction. However, since the U bolt 51 is used, the tightening time of the nut 53 is increased, and there is a problem that it takes more work time than the case of using the separator mounting bracket fastener (31 in FIG. 5).

It is a perspective view of the separator mounting bracket of the present invention. It is a side longitudinal cross-sectional view of the separator mounting bracket of this invention. It is a partially cutaway front view of the separator mounting bracket fastener of the present invention. It is a perspective view explaining the state which attaches the separator mounting bracket of this invention to a reinforcing bar via a separator mounting bracket fastener. It is a perspective view which shows the state which attached the separator mounting bracket of this invention to the reinforcing bar via the separator mounting bracket fastener. It is a side longitudinal cross-sectional view which shows the state which attached the separator mounting bracket of this invention to the reinforcing bar via the separator mounting bracket fastener. It is a perspective view explaining the state which attaches the separator mounting bracket of this invention to a reinforcing bar via a separator mounting bracket fastener, and the state which attaches a separator to a separator mounting bracket. It is a rear view which shows the state which attached the separator of this invention to the separator attachment metal fitting. It is a perspective view which shows construction by the separator mounting bracket attachment mechanism of this invention. It is a perspective view which shows the state which attached the separator mounting bracket of this invention to the reinforcing bar via the U volt | bolt. It is a perspective view which shows construction by the separator mounting bracket attachment mechanism of a prior art example.

Explanation of symbols

11 Separator mounting bracket 12 Upper plate portion 13 Left side plate portion 14 Right side plate portion 15 First through hole 16 Second through hole 17 Lateral hole 18 Notch portion 19 Round hole 20 Groove hole 21, 22 Detent protrusion 31 Separator mounting bracket fastener 32 Rectangular body member 33 Hook part 34, 44, 53 Nut 35, 43 Male thread part 36 Connection body 41 Reinforcing bar 42 Separator 45 Mold frame 46, 52 Separator mounting bracket mounting structure 51 U bolt

Claims (5)

  A separator mounting bracket comprising an upper plate portion and left and right side plate portions that are bent downwardly from the left and right side sides and bent at the left and right sides of the upper plate portion, near both ends of the upper plate portion. The first and second through holes are respectively opened, and the horizontal holes are opened in the center portion of the left and right side plate portions and both sides thereof so as to be opposed to each other in the left and right directions. A separator mounting bracket characterized in that a notch is formed in each of the two.   The first through hole opened in the upper plate portion is formed in a long hole shape, and the second through hole extends in the longitudinal direction of the upper plate portion from the round hole and the round hole. A separator mounting bracket that is formed from a groove having a width smaller than the diameter, protrudes upward in the vicinity of the outer end of the first and second through holes of the upper plate, and is attached to the upper plate. The separator mounting bracket according to claim 1, further comprising a protrusion for preventing the displacement of the tool.   A rectangular parallelepiped member is horizontally provided at the tip, and is formed of a hook portion on one end side formed in a hook shape, a male screw portion on the other end side on which the nut can be freely attached, and a flexible coupling body in the center portion, The separator mounting bracket fastener according to claim 2, wherein the hook portion and the male screw portion are fixed to both ends of the coupling body, and the hook portion has a longitudinal direction of the rectangular parallelepiped member. 3. The separator mounting bracket round hole according to claim 2, wherein the first through hole can pass through when aligned in the longitudinal direction of the through hole, and the passage is restricted when the direction is rotated by 90 degrees. The separator mounting bracket fastener is characterized in that it is formed so as to be able to pass through and to be restricted from passing through the slot.   The said notch part of the separator mounting bracket of Claim 2 was mounted on the reinforcing bar, and the hook part of the separator mounting bracket fastener of Claim 3 was penetrated from the 1st through-hole of this separator mounting bracket from the downward direction. Thereafter, the separator mounting bracket fastener is rotated by approximately 90 degrees, the connecting body is bent, the rebar is wound, and the male threaded portion on which the nut is attached is placed in the round hole of the second through hole together with the nut. The male screw part is moved to the slot side along with the nut, the nut is tightened to fix the separator mounting bracket to the reinforcing bar, and one end is inserted into the horizontal hole of the left and right side plate portion of the separator mounting bracket. The separator is fixedly attached to the separator mounting bracket by passing through the other end of the separator that is fixedly attached to the mold and passing through the other end of the separator and tightened with a nut screwed into a male screw portion engraved in the separator. To Separator mounting bracket mounting structure.   The notch of the separator mounting bracket according to claim 2 is placed on a reinforcing bar, the reinforcing bar is sandwiched between U bolts, both ends of the U bolt are passed through the first and second through holes, Both ends of the U-bolt are tightened with nuts, the separator mounting bracket is fixed to the reinforcing bar, and the other end of the separator extending through the left and right side plate portions of the separator mounting bracket is fastened to the formwork. And a separator mounting bracket mounting structure, wherein the separator is fixed to the separator mounting bracket by tightening with a nut screwed into a male screw portion engraved in the separator.

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