JP3848590B2 - Tightening structure for formwork - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fastening structure for a formwork.
[0002]
[Prior art]
A conventional fastening structure for a formwork includes a long bolt disposed around the formwork (four sides in plan view) and a long bolt that fastens the ends of the long members facing (on opposite sides) to each other, and And the mold was tightened from the periphery.
[0003]
[Problems to be solved by the invention]
However, in the conventional fastening structure for formwork, the long member and the long bolt are longer than one side of the formwork, increase in weight, and are bulky. Dismantling was difficult.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a mold structure clamping structure that is convenient to carry and can be easily assembled or disassembled.
[0005]
[Means for Solving the Problems]
To achieve the above object, a mold for clamping structure according to the present invention, At a structure to tighten the mold from the ambient, which has a locking hole at a predetermined pitch in a longitudinal direction to the end portion Two long members disposed in parallel at a predetermined interval, a corner fastening receiver fixed to both ends of the two long members so as to be detachable , and the two adjacent lengths and tie bolt for coupling the female component with the corner clamping the elongate member, and a nut screwed to the tie bolt, bracket as with the corner clamping includes a locking bent portion of the mountain shape, the locking A first bottom wall portion and a second bottom wall portion extending to both lower end edges of the bent portion; and provided in the first bottom wall portion and inserted into the locking holes of the two long members. A non-slip protrusion, and a through-hole for inserting a bolt provided in the second bottom wall portion and inserted into the locking hole of the two long members. Further, the corner fastening receiver has a tie bolt insertion groove provided from the first bottom wall portion to a position immediately before the second bottom wall portion of the locking bent portion, and The through hole is disposed so as to be on the end side of the long member, and the tie bolt is inserted between the two long members and in the tie bolt insertion groove, and the locking bent portion. the between the nut, larger contact members than the groove width of the tie-bolts insertion groove is Ru is interposed.
[0006]
Further, the two long members are separate members that can be separated from each other. The long member is composed of a plurality of long member single members arranged in series and a joint angle material that couples adjacent long member single members to each other. Further, the joint angle member has a nut welded to the inner surface in advance, is disposed on the inner surface side of the long member single body, and is fastened together with a bolt from the outer surface side of the long member single body.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
[0008]
1 and 2 show an embodiment of a fastening structure for a formwork according to the present invention, and this structure is a long member 2 disposed around the formwork 6 (four sides in plan view). And corner fastening receivers 1 and 1 fixed to both ends of the long member 2 in a detachable manner, and the corner fastening receivers 1 and 1 of the adjacent long members 2 and 2. Are connected by a tie bolt 3 and a nut, and the mold 6 is tightened from the periphery. In FIG. 2, the corner fastening receiver 1, the tie bolt 3, and the nut are omitted.
[0009]
The mold 6 is made of concrete, and includes, for example, two long side walls 6a and 6a, two short side walls 6b and 6b, and four square walls 6c. ing.
[0010]
In the long member 2..., The long side wall portions 6a and 6a and the short side wall portions 6b and 6b are respectively disposed along the both-side wall portions 6c and 6c (sides). It is arranged so as to coincide with the directions of both corner walls 6c, 6c. That is, in each long side wall portion 6a (short side wall portion 6b), the two long members 2 and 2 are integrally formed by mounting members 23 provided at predetermined intervals in the longitudinal direction. It is fixed and constitutes a set of long members 2 and 2, and the set of long members 2 and 2 are arranged in parallel. Reinforcing rods 24 arranged in a direction perpendicular to the longitudinal direction of the long member 2 are attached to the outer surface side of the long member 2 so that the mold 6 can be tightened firmly.
[0011]
The total length of the long member 2 corresponding to the long side wall 6a is set to be shorter than the length of the long side of the mold 6 (the total length of the long side wall 6a and both corner walls 6c, 6c), The total length of the long member 2 corresponding to the short side wall 6b is set to be shorter than the length of the short side of the mold 6 (the total length of the short side wall 6b and both corner walls 6c, 6c). Yes.
[0012]
Moreover, the tie bolt 3 should just be the length which fully reaches | attains the corner fastening receptacles 1 and 1 of the elongate members 2 and 2 of an adjacent edge | side.
[0013]
In other words, this structure is configured such that adjacent long members 2 and 2 are coupled to each other by tie bolts 3 and the like, and the mold 6 is tightened. The length can be remarkably shortened (compared to the conventional case), and the weight of the material and the cost can be reduced.
[0014]
As shown in FIGS. 3 and 4, the long member 2 is a hollow rectangular tube (such as steel), and the locking holes 20 are formed on the outer wall and inner wall of both ends thereof at a predetermined pitch P in the longitudinal direction. …have. The two long members 2 are arranged in parallel at a predetermined interval K (integrally). The two long members 2 and 2 may be integrally fixed by welding or the like, or may be separate members that can be separated from each other.
[0015]
As shown in FIGS. 5 and 6, the corner fastening receiver 1 is made of a steel plate, and extends in a mountain-shaped locking bent portion 13 and both lower end edges of the locking bent portion 13. It has a bottom wall portion 14a, a second bottom wall portion 14b, and a rib portion 15 erected on the inner surface of the locking bent portion 13 in order to hold the mountain shape of the locking bent portion 13.
[0016]
As shown in FIGS. 3 to 6, the first bottom wall portion 14 a has anti-slip protrusions 10, 10 inserted into the locking holes 20, 20 of the two long members 2, 2. The anti-slip protrusion 10 is configured, for example, by welding a pin member to the first bottom wall portion 14a in a penetrating manner. The interval between the two anti-slip protrusions 10 and 10 is the same as the interval between the locking holes 20 and 20 of the two long members 2 and 2.
[0017]
The second bottom wall portion 14b has through holes 11 and 11 into which bolts to be inserted into the locking holes 20 and 20 of the two long members 2 and 2 are inserted. The interval is the same as the interval between the locking holes 20 and 20 of the two long members 2 and 2.
[0018]
The anti-slip protrusions 10 and the through holes 11 are arranged at the same predetermined pitch P as the locking holes 20. That is, the corner fastening receiver 1 can be selectively attached to the locking holes 20 of the long member 2.
[0019]
In short, the vertical width (in the direction connecting the two anti-slip protrusions 10, 10) of the bottom wall portions 14 a, 14 b of the corner fastening receiver 1 is substantially the same as the entire width of the two long members 2, 2. Thus, the bottom wall portions 14a and 14b of the corner fastening receiver 1 are reliably supported on the entire outer surfaces of the two long members 2 and 2.
[0020]
The corner fastening receiver 1 is provided with a tie bolt insertion groove 12 in the lateral width direction (direction in which the anti-slip protrusion 10 and the through hole 11 are connected) at the center of the longitudinal width. Specifically, the tie bolt insertion groove 12 is provided from the first bottom wall portion 14 a to a position immediately before the second bottom wall portion 14 b of the locking bent portion 13.
[0021]
The groove width M of the tie bolt insertion groove 12 is set to be larger than the outer diameter of the tie bolt 3 (see FIG. 9) and equal to or smaller than the predetermined interval K between the two long members 2 and 2. Yes.
[0022]
Next, FIG. 7, FIG. 8, and FIG. 9 show the usage state of the fastening structure. In FIG. 8 and FIG. 9, the form 6 is omitted.
[0023]
That is, the anti-slip protrusion 10 of the corner fastening receiver 1 is inserted into the locking hole 20 of the long member 2 that is in contact with the rib of the mold 6, and the bolt 5 is connected to the long member 2. The other fastening holes 20 and the through holes 11 of the corner fastening receiver 1 are inserted and coupled with nuts, and the corner fastening receiver 1 is fixed to the long members 2 and 2. The bolt 5 is inserted into the locking hole 20 on the end side of the long member 2 with respect to the locking hole 20 into which the anti-slip protrusion 10 is inserted, and from the end opening side of the long member 2, The bolt 5 can be easily tightened or removed. In short, the corner fastening receiver 1 is disposed on the long member 2 such that the through hole 11 is on the end side of the long member 2 .
[0024]
One end side of the tie bolt 3 is inserted between one of the two elongated members 2 and 2 and the tie bolt insertion groove 12 of the corner fastening receiver 1, and the other end side of the tie bolt 3 is the other, It is inserted between the two long members 2 and 2 and into the tie bolt insertion groove 12 of the corner fastening receiver 1.
[0025]
From one end and the other end of the tie bolt 3, the hole of the contact member 9 is fitted and the nut 4 is screwed, and the contact member 9 is interposed between the locking bent portion 13 and the nut 4. . That is, the contact member 9 larger than the groove width M of the tie bolt insertion groove 12 prevents and locks the tie bolt 3 from the tie bolt insertion groove 12 so that the tie bolt 3, nut 4, Adjacent corner fastening receivers 1 and 1 are connected to each other via the contact member 9.
[0026]
According to the structure configured as described above, the tie bolt 3 has an inner angle formed by the tie bolt 3 and the long member 2 exceeding 90 ° with respect to each of the adjacent long members 2 and 2. Therefore, the long members 2 and 2 are pressed against the mold 6 by the tightening force of the nut 4, so that the mold 6 can be strongly tightened.
[0027]
FIG. 7 shows the case where the inner angle formed by the long side wall 6a and the short side wall 6b is a right angle. However, as shown in FIG. 10, the long side wall 6a and the short side wall are shown. Even when the inner angle formed with the portion 6b is an angle other than a right angle (obtuse angle in FIG. 10), the adjacent corner fastening receivers 1 and 1 are held by the tie bolt 3, the nut 4, and the contact member 9. Can be combined. At this time, the abutting member 9 is formed in a wedge shape, and the fastening force can be reliably received by the locking bent portion 13 of the corner fastening receiver 1.
[0028]
Next, as shown in FIGS. 11 and 12, when the length of the long member 2 is considerably long, the long member 2 is adjacent to a plurality of single long members 2a arranged in series. And a joint angle member 7 for joining the long members alone 2a, 2a to each other.
[0029]
The joint angle member 7 has a nut 21 welded in advance to the inner surface, is disposed on the inner surface side of the long member single body 2a, and is fastened together with bolts 22 from the outer surface side of the long member single body 2a. .
[0030]
In addition, this invention is not limited to the above-mentioned embodiment, For example, the shape of the elongate member 2 is good also as a channel, and the joint angle material 7 is arrange | positioned on the outer surface side of the elongate member single-piece | unit 2a. You may make it combine. The design can be changed without departing from the gist of the present invention.
[0031]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained .
[0032]
(According to claim 1 ) Since the adjacent long members 2 and 2 are joined and the mold 6 is tightened, the length of the long member 2 can be made shorter than one side of the mold 6. In addition, the length of the tie bolt 3 can be shortened to such an extent that the adjacent long members 2 and 2 are joined, the overall weight and bulk are reduced, and the assembly and disassembly work of the mold 6 can be easily performed. Therefore, it is convenient for transportation and storage, the structure is simple, and the cost can be reduced. Moreover, the attachment position to the two elongate members 2 and 2 of the corner fastening receptacle 1 can be changed variously, and it can respond to the molds 6 ... of various sizes. Furthermore, the inner angle formed by the adjacent long members 2 and 2 is not limited to a right angle but can be applied to other angles, and the round mold 6 can be securely tightened.
[0033]
(According to claim 2 ) The weight can be reduced as one long member 2, and the assembling or disassembling work of the mold 6 becomes easier.
(According to claim 3 ) Since the long member 2 can be lengthened by connecting a plurality of long member single bodies 2 a... Moreover, the long member single body 2a ... of the same length can be mass-produced, and the cost can be reduced as a whole.
(According to claim 4 ), the long member single body 2a and the joint angle member 7 can be easily tightened, and the assembly or disassembly of the long member 2 is facilitated.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention.
FIG. 2 is an overall front view.
FIG. 3 is a front view of a long member.
4 is a cross-sectional view taken along the line AA in FIG.
FIG. 5 is a front view of a corner fastening receiver.
FIG. 6 is a plan view of a corner fastening receiver.
FIG. 7 is an enlarged plan view of a main part showing a tightening state of the present invention.
FIG. 8 is an enlarged side view of a main part showing a tightening state of the present invention.
FIG. 9 is an enlarged front view of a main part showing a tightening state of the present invention.
FIG. 10 is an enlarged plan view of a main part showing another tightening state of the present invention.
FIG. 11 is an enlarged front view of a main part.
12 is a BB cross-sectional view of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Corner fastening receiver 2 Long member 2a Long member simple substance 3 Tie bolt 4 Nut 5 Bolt 6 Mold frame 7 Joint angle material 9 Contact member
10 Anti-slip protrusion
11 Through hole
12 Tie bolt insertion groove
13 Locking bend
14 a First bottom wall
14 b Second bottom wall
20 Locking hole
21 Nut
22 Volts K Predetermined interval P Predetermined pitch

Claims (4)

In the structure for tightening the mold 6 from the periphery, two long members 2 having locking holes 20 at a predetermined pitch P in the longitudinal direction at the end and disposed in parallel at a predetermined interval K. , 2, corner fastening receivers 1 , 1 that are detachably fixed to both ends of the two long members 2, 2, and the corners of the two long members 2, 2 adjacent to each other comprises a tie bolt 3 for coupling clamping bracket as 1,1, a nut 4 screwed to the tie bolt 3, a,
With the corner clamping bracket as 1, the locking bent portion 13 of the mountain-first bottom wall portion 14 a and the second bottom wall portion 14 that extends in both the lower edge of the engaging bent portion 13 b, anti-slip protrusions 10 , 10 provided in the first bottom wall portion 14 a and inserted into the locking holes 20 , 20 of the two long members 2, 2 , and the second have together provided in the bottom wall portion 14 b and the through-hole 11, 11 for inserting the bolts 5, 5 are inserted into the engaging stop hole 20, 20 of the two elongate members 2, a,
Furthermore, the corner clamping bracket as 1, the tie-bolts insertion groove 12 provided from the first bottom wall portion 14 a to a position immediately before the second bottom wall portion 14 b of the locking bent part 13 And the through hole 11 is disposed so as to be on the end side of the elongated member 2,
The tie bolt 3 is inserted between the two elongated members 2 and 2 and into the tie bolt insertion groove 12 , and the tie bolt is inserted between the locking bent portion 13 and the nut 4. mold for clamping structure large abutting member 9 than the groove width M of the recessed groove 12, characterized in Rukoto interposed. The fastening structure for a mold according to claim 1, wherein the two long members 2 and 2 are separate members that are separable from each other. The elongated member 2 has a plurality of elongated members alone 2a arranged in series form ... elongated adjacent member alone 2a, a joint angle member 7 for coupling the 2a to each other, according to claim 1 or 2 consisting of Clamping structure for formwork as described. Joint angle member 7 has a nut 21 which is previously welded to the inner surface, claims disposed on the inner surface side of the elongated member itself 2a, is fastened by bolts 22 from the outer surface side of the elongated member itself 2a Item 4. A fastening structure for a formwork according to Item 3 .

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