JP6638895B2 - Clamping device and frame structure - Google Patents

Description

  The present invention relates to a clamp device and a framework structure.

2. Description of the Related Art Conventionally, temporary framework scaffolds are frequently used at construction sites (see, for example, Patent Literature 1, Patent Literature 2, Patent Literature 3, and Patent Literature 4).
In general, as shown in FIG. 15, the frame scaffold 1 has a floor plate 3 erected between a pair of building frames 2 arranged opposite to each other and connects the pair of building frames 2 with a pair of X-shaped cross braces 4. It is configured. The cross brace 4 is attached to the building frame 2 with a cross brace mounting pin having a diameter of about 13 mm in the building frame 2.

JP-A-2004-257112 JP 2008-57253 A JP 2010-229697 A JP 2011-89260 A

  On the other hand, the horizontal rigidity of the framework scaffold having the above configuration is mainly determined by a pair of X-shaped cross braces. For example, in the case of a cross brace having a diameter of 21.7 × a thickness of 1.9 mm, a pin hole having a hole diameter of 15 mm is formed at an end thereof, and a cross brace mounting pin having a diameter of 13 mm is inserted and attached to the building frame. Like that. That is, the cross brace is provided with a pin hole having a diameter about 2 mm larger than the diameter of the cross brace mounting pin.

  Since the pin holes of the cross brace and the cross brace mounting pins have different diameters and play is allowed, a certain amount of horizontal displacement occurs as shown in FIG. 16 (loading point shown in FIG. 15). The rigidity of the cross bracing will be exhibited only after a while.

  For this reason, for example, when a large earthquake occurs, a large external force acts suddenly due to backlash, buckling occurs in the cross bracing, or the cross bracing mounting pin is damaged, and the rigidity is lost at once. There was a risk of doing so.

  In view of the above circumstances, an object of the present invention is to provide a framework structure capable of effectively improving rigidity, and a clamp device provided therein.

  To achieve the above object, the present invention provides the following means.

Clamping device of the present invention is a clamping device for connecting the one of the bar and prismatic other bar, the other bar being disposed so as to sandwich the other of the bar a pair of clamping holding member for clamping the holding, and the clamping force applying means for applying a clamping force to the pair of clamp holding members, arranged in connection to the clamp holding member, the clamp holding member to the one of the bar is configured to include a coupling means for coupling, the said clamp retaining member comprises a plate-like clamping portion which abuts against the other of the bar, upon holding the other of the bar, the other of the bar The clamp portion is arranged so as to intersect at an angle of 45 to 60 degrees with respect to the material axis direction.

Further, the clamping device of the present invention, the pair of clamping holding member, respectively, a front chrysanthemum lamp unit, provided on the upper side, the bent portion that is bent outward in the width direction of the clamping device to the clamping portion And one of the clamp holding members has an elongated upper bolt locking hole extending from the bent portion to the clamp portion while opening at the upper end side at the end of the bent portion. And a lower bolt insertion hole formed at a lower end side of the clamp portion, and the other clamp holding member includes an elongated upper bolt insertion hole extending from the bent portion to the clamp portion at an upper end side. Along with this, a lower bolt insertion hole is formed at the lower end side of the clamp portion, and the clamp holding member is inserted into the upper bolt engagement hole and the upper bolt insertion hole, and a nut is fastened. An upper bolt connecting the upper ends of the pair of clamp holding members, and a lower bolt inserted into the lower bolt insertion hole, fastening a nut, and connecting the lower ends of the pair of clamp holding members. It is desirable to be constituted.

Further, in the clamp device of the present invention, the one clamp holding member is formed substantially in an L-shape with an extending portion extending in the width direction from a lower end of the clamp portion, and the one clamp holding member is The other clamp holding member is formed with a position adjusting hole extending in the width direction, the lower end side is engaged with the position adjusting hole, and the other clamp holding member is freely movable in the width direction with respect to the one clamp holding member . It is more desirable to be connected and arranged.

Further, in the clamp device of the present invention, the head of the upper bolt is engaged with the one of the clamp holding members or the other clamp holding member around the upper bolt insertion hole or the upper bolt locking hole. It is more desirable that the washer is provided integrally.

Further, in the clamp device of the present invention, a through-hole for screwing the clamp portion to the other bar is provided in the clamp portion of the one clamp holding member and / or the other clamp holding member. Is desirable.

The frame structure of the present invention is a frame structure in which one bar and the other bar are connected to each other , and a frame main body including the one bar is connected to the one bar. wherein the other of the bar attached to the framework body Te, and a clamping device according to any one of claims 5 to the other bar claims 1 for coupling to the one of the bar It is characterized by comprising.

Further, it is more preferable that the framework structure of the present invention is provided with a plate-like stiffening plate material which is supported by the other bar material and is installed on the structural surface of the framework body.

  ADVANTAGE OF THE INVENTION According to the clamp apparatus and the frame structure of this invention, rigidity can be improved significantly and it can prevent buckling of a cross bracing or damage of the cross bracing mounting pin at the time of a large earthquake etc. Thus, it is possible to prevent the rigidity from being lost at once.

It is a perspective view showing the framework structure concerning one embodiment of the present invention. It is a perspective view showing the clamp device concerning one embodiment of the present invention. It is a front view showing the clamp device concerning one embodiment of the present invention. FIG. 4 is a view taken along line X1-X1 of FIG. 3. FIG. 4 is a view taken along line X2-X2 in FIG. 3. It is the figure which compared the relationship of the loading point displacement and the cross bracing axial force of the conventional scaffold (framing structure) provided with the cross bracing and the framework scaffold (framing structure) which concerns on one Embodiment of this invention. 7 (a): Case 1 (installed at a crossing angle of 90 ° with respect to the direction of the material axis of the timber), with the clamp device according to one embodiment of the present invention installed at different angles (FIG. 7 (a)). : Case 2 (installed at a crossing angle of 60 degrees with respect to the direction of the material axis of the bar), FIG. It is. FIG. 8 is a diagram illustrating a relationship between rigidity of a case 1, a case 2, and a case 3 of FIG. 7 and an angle of a clamp device. FIG. 8 is a diagram illustrating a relationship between rigidity magnifications of a case 2 and a case 3 with respect to a case 1 of FIG. 7 and an angle of a clamp device. It is a perspective view showing a modification of the framework structure concerning one embodiment of the present invention, and is a figure showing an example which applied the present invention to a frame scaffold of two steps. It is a perspective view showing a modification of the framework structure concerning one embodiment of the present invention, and is a figure showing an example which applied the present invention to a frame scaffold of two steps. It is a perspective view showing a modification of the framework structure concerning one embodiment of the present invention, and is a figure showing an example which applied the present invention to a floor structure. It is a perspective view showing a modification of the framework structure concerning one embodiment of the present invention, and is a figure showing an example which applied the present invention to a fence structure. It is a perspective view showing a modification of the clamp device concerning one embodiment of the present invention. It is a perspective view which shows the conventional frame scaffold (frame structure) provided with the cross bracing. It is a figure which shows the relationship between the loading point displacement of the conventional scaffold (framework structure) provided with the cross bracing, and the cross bracing axial force.

  Hereinafter, a clamp device and a framework structure according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. Here, in the present embodiment, description will be made assuming that the framework structure is a framework scaffold.

  As shown in FIG. 1, the framework scaffold (frame structure) A of the present embodiment is configured by laying a floor plate 3 between a pair of building frames (frame body) 2 arranged to face each other.

  Further, in the framework scaffold A of the present embodiment, a plurality of wooden square members (stiffening bar members) which are attached to the pair of building frames 2 and are horizontally installed and arranged at predetermined intervals in the vertical direction. A pair of structural plywood (plate material for stiffening) 6 supported on a plurality of square members 5 and arranged on the surface of the framed scaffold A so that the plate surface faces sideways; It is provided with a clamp device B for connecting the square bar 5 to a bar (one bar) 2 a constituting the building frame 2.

  As shown in FIGS. 2, 3, 4, and 5, the clamp device B according to the present embodiment includes a pair of clamp plates (clamps) that are disposed on both sides so as to sandwich the rectangular material 5 and sandwich the rectangular material 5. Holding members) 7, 8 and a pair of bolts (upper bolts 10, upper bolts 10, 8) for removably connecting the upper ends and the lower ends of the pair of clamp plates 7, 8 to each other and for applying a clamping force for sandwiching the square member 5. It comprises a lower bolt 9 / clamping force applying means and a building frame connecting clamp (frame body connecting means) 11 for detachably connecting the clamping device B to the bar 2a of the building frame 2.

  The construction frame connecting clamp 11 is configured in the same manner as a conventional single pipe connecting clamp, and is integrally fixed to one clamp plate 7 by welding or the like.

  Each of the pair of clamp plates 7 and 8 of the present embodiment is formed in a substantially rectangular plate-like band shape, and has a lower bolt insertion hole 12 formed at the lower end thereof. Further, each of the pair of clamp plates 7 and 8 is formed by bending the upper end side in an out-of-plane direction (outside in the width direction of the clamp device B).

  Here, the bent portion 7a of the one clamp plate 7 is formed to be obliquely bent so as to intersect, for example, at an angle of about 45 ° with the extending direction of the lower clamp portion 7b. The bent portion 8a of the other clamp plate 8 is bent at an angle of, for example, about 90 ° with respect to the extending direction of the lower clamp portion 8b.

  Further, one clamp plate 7 is formed by providing an upper bolt locking hole 13 that is recessed from the upper end toward the lower end and penetrates from one surface to the other surface at the center in the width direction on the upper end side. The upper bolt locking hole 13 extends from the bent portion 7a of one clamp plate 7 to a predetermined position of the clamp portion 7b. The other clamp plate 8 is formed by providing an upper bolt insertion hole 14 penetrating from one surface to the other surface at the center in the width direction on the upper end side. The upper bolt insertion hole 14 extends from the bent portion 8a of the other clamp plate 8 to the clamp portion 8b.

  That is, in the present embodiment, the upper bolt locking hole 13 is formed in a long hole shape and is formed so as to open at the upper end of one clamp plate 7 (the end of the bent portion 7a). . The upper bolt insertion hole 14 is formed in a long hole shape, and is formed without opening at the upper end of the other clamp plate 8 (end of the bent portion 8a).

Further, in the present embodiment, washers 7c, 8c are integrally joined and attached around the upper bolt engagement hole 13 and the upper bolt insertion hole 14 of the one clamp plate 7 and the other clamp plate 8. These washers 7c and 8c reinforce the portions where the upper bolt locking holes 13 and the upper bolt insertion holes 14 are formed.

  The washer 8c attached to the other clamp plate 8 has a function of engaging the head 10a of the upper bolt 10 when fastening the nut to the upper bolt 10 to hold the upper bolt 10 and prevent the upper bolt 10 from rotating. Function to prevent clockwise rotation).

  The other clamp plate 8 (and / or one clamp plate 7) has a through hole 16 that penetrates from one surface to the other surface and allows screws to pass therethrough.

  When attaching the timber 5 to the building frame 2 of the framework scaffold A using the clamp device B configured as described above, first, the lower bolt 9 is inserted into the lower bolt insertion hole 12, and the nut 15 is fastened. The lower ends of the plates 7 and 8 are connected.

  Further, the nut 17 is inserted into the upper bolt insertion hole 14, the nut 17 is attached, the upper bolt 10 is attached to the bent portion 8a of the other clamp plate 8, and the nut 17 is locked to the bent portion 8a, and the other clamp plate 8 The upper bolt 10 is disposed along the direction.

  Then, the building frame connecting clamp 11 is attached to the bar 2a of the building frame 2, and the clamp device B is installed at a predetermined position.

  Next, the square member 5 is installed so as to be inserted into a portion surrounded by the pair of clamp plates 7 and 8 and the lower bolt 9. Further, the square member 5 is installed so as to be brought into contact with the lower bolt 9 and supported by the lower bolt 9. The nut 15 attached to the lower bolt 9 is tightened to bring the pair of clamp plates 7 and 8 into close contact with the side surfaces of the square bar 5 respectively.

  Here, since the square bar 5 abuts on the cylindrical rod-shaped shaft portion of the lower bolt 9 and is supported, even if the square bar 5 is not horizontal but is inclined within an allowable range, the square bar 5 The shaft of the lower bolt 9 does not hit one side.

  Next, as shown by a broken line S in FIG. 2, the upper bolt 10 is pulled out upward, and the nut 7 is screwed into the other end of the other clamp plate 8 while sliding in the elongated upper bolt insertion hole 14. The side is inserted into the upper bolt locking hole 13 and locked to one clamp plate 7.

  Further, the upper bolt 10 is slid in the elongated upper bolt insertion hole 14 and the upper bolt locking hole 13, and the position of the upper bolt 10 is adjusted according to the size of the square member 5. Then, the nut 17 is tightened to apply a clamping force to the pair of clamp plates 7, 8, and the rectangular piece 5 is clamped and held by the pair of clamp plates 7, 8.

  Thereby, the square member 5 is detachably connected to and attached to the building frame 2 by the clamp device B.

Further, in the present embodiment, a pair of strips formed in a strip shape with respect to the material axis direction (material axis) O1 of the bar 5 extending in the horizontal direction in a state where the bar 5 is attached to the building frame 2 by the clamp device B. The clamp device B is installed such that the extending directions of the clamp plates 7 and 8 (axial direction O2 of the clamp device B) intersect at an angle θ1 of 45 ° to 60 °.
In other words, in this embodiment, the clamp device B is installed such that the axial direction O2 of the clamp device B intersects the axial direction O3 of the bar 2a of the building frame 2 at an angle θ2 of 30 ° to 45 °. I do.

  In this embodiment, a pair of clamp plates 7 and 8 of the clamp device B are connected by an upper bolt 10 and a lower bolt 9, and a cylindrical rod-shaped shaft of the lower bolt 9 (or the upper bolt 10) contacts the square bar 5. Since they are configured to be in contact with each other, the angles θ1 and θ2 of the clamp device B with respect to the square bar 5 can be freely adjusted.

  Further, in the present embodiment, a screw is driven into the square bar 5 through the through holes 16 formed in the one clamp plate 7 and / or the other clamp plate 8. Thereby, the square bar 5 is securely positioned and fixed.

In this way, the plurality of square members 5 are respectively erected on the building frame 2 at predetermined intervals in the vertical direction using the clamp device B (FIG. 1).
Further, as shown in FIG. 1, a plurality of square members 5 are fixedly supported by using appropriate fixing means such as nails, adhesives, wires, bolts, etc., and are arranged along the side surfaces of the framework scaffold A so that the plate surface faces sideways. The structural plywood 6 is installed. Thereby, the framework scaffold A of the present embodiment is completed.

  Then, in the framework scaffold (frame structure) A and the clamp device B of the present embodiment configured as described above, when a large earthquake occurs, for example, the strength of the clamp device B is higher than that of the structural plywood 6 or the square lumber 5. Since the clamp device B is not damaged in advance, it is possible to prevent the horizontal rigidity from being lost at once as shown in FIG.

  In addition, the square timber 5 and the structural plywood 6 can be used instead of the horizontal connecting single pipe of the two building frames 2, and it is possible to save the labor for installing the horizontal connecting single pipe.

  Further, by using the wooden structural plywood 6 and the square lumber 5, the shape, length, and the like can be easily processed and adjusted.

  In addition, by adjusting the size, thickness, number, and the like of the structural plywood 6, the rigidity can be made larger than that of the existing cross brace 4, and the absorption of seismic energy can be made larger than the cross brace 4.

Here, FIGS. 8 and 9 (see FIG. 7) show that the direction of the axis O2 of the clamp device B (the direction in which the clamp plates 7 and 8 extend) intersects at 90 ° with the direction O1 of the bar 5. The difference in stiffness between the case where the intersection is made (case 1), the case where the intersection is made at 60 ° (case 2), and the case where the intersection is made at 45 ° (case 3) is shown.
As shown in FIGS. 8 and 9, by setting the crossing angle to 45 to 60 °, the contact area between the pair of clamp plates 7 and 8 and the bar 5 can be increased, and the rigidity can be further improved. Becomes possible. In addition, the bending rigidity of the entire framework scaffold A can be improved, slippage between the clamp device B and the square bar 5 can be suppressed, and loss of horizontal rigidity can be reliably prevented at once.

  Further, in the clamp device B (and the frame scaffold (frame structure) A) of the present embodiment, the bent portions 7a, 8a are provided on the upper end sides of the one clamp plate 7 and the other clamp plate 8, and the bent portions are formed. An upper bolt locking hole 13 and an upper bolt insertion hole 14 having a long hole shape are provided in 7a and 8a, and the upper bolt 10 can be attached by being locked while being inserted into the upper bolt locking hole 13 and the upper bolt insertion hole 14. it can.

  When mounting / installing the clamp device B or the square bar 5, the upper bolt 10 can be locked to the bent portion 8 a with the nut 17, and can be disposed along the other clamp plate 8. Thereby, when the square member 5 is inserted between the pair of clamp plates 7 and 8 and installed, it does not interfere with the upper bolt 10, and after the square member 5 is installed, the upper bolt 10 is pulled up and the upper bolt locking hole 13, the nuts 17 are fastened, and the clamping force can be easily applied (with excellent operability) by the upper bolts 10 to hold the square members 5.

  Further, by providing a bent portion 7a which is bent obliquely on the upper end side of one clamp plate 7, the bent portion 7a which is bent obliquely is hooked, and the nut 17 after fastening and thus the upper bolt 10 is locked by the upper bolt. Detachment from the hole 13 (one clamp plate 7) can be reliably prevented.

  Further, since the upper bolt locking hole 13 and the upper bolt insertion hole 14 are formed in the shape of a long hole extending in the vertical direction, the upper bolt locking hole 13 and the upper bolt insertion hole 14 are slid and moved in the upper bolt locking hole 13 and the upper bolt insertion hole 14. The position of 10 can be easily adjusted according to the size (height) of the square bar 5. Thereby, the upper bolt 10 can be easily arranged at a suitable position according to the size of the square member 5 and the like, and even when the upper bolt 10 is applied to fix the square members 5 having different sizes (heights), The square member 5 can be securely and firmly clamped and held.

  A washer 8c is attached to the other clamp plate 8, and when the nut 17 is fastened to the upper bolt 10, the head 10a of the upper bolt 10 can be engaged with the washer 8c to prevent the upper bolt 10 from rotating. it can. This makes it possible to easily (efficiently) perform the fastening operation of the nut 17, and further, the installation operation of the clamp device B and the fixing operation of the square member 5.

  Further, the lower ends of the pair of clamp plates 7 and 8 are connected to each other with the lower bolt 9, and the lower bar 9 is configured to support the square bar 5 with a cylindrical rod-shaped shaft portion. Even when 5 is inclined right and left, the square bar 5 does not hit one side. This makes it possible to suitably fix the square bar 5 with the clamp device B.

  In addition, the lower ends of the pair of clamp plates 7 and 8 are connected to each other with lower bolts 9, and the bar 5 is supported by the cylindrical rod-shaped shaft portions of the lower bolts 9. The direction of the axis O2 of the clamp device B can be freely adjusted. Thus, the clamping device B can be easily installed so as to intersect the square bar 5 at an angle θ1 of 45 to 60 ° as in the present embodiment.

  Furthermore, a through hole 16 is formed in one of the clamp plates 7 and / or the other clamp plate 8, and by driving a screw into the square member 5 through the through hole 16, the square member 5 can be more reliably positioned and fixed.

  As described above, one embodiment of the clamp device and the framework structure according to the present invention has been described. However, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist thereof.

For example, as shown in FIG. 10, a rectangular lumber 5 and a structural plywood 6 may be attached to a scaffold A having a plurality of steps using a clamp device B. As shown in FIG. 11, a bracing 18 may be used instead of the structural plywood 6.
When a stiffening plate such as the structural plywood 6 is provided, the stiffening plate may be used for other purposes such as an advertising board.

  Further, in the present embodiment, the description has been made assuming that the framework structure A is a framework scaffold. However, as shown in FIG. 12, a plate body (floor material) is provided on a framework body 19 formed using a rod material such as a single tube. 13) A floor structure 21 (A) to which a plate member (partition member) 20 is attached to a frame main body 19 formed by using a rod member such as a single tube as shown in FIG. The present invention may be applied to other framework structures such as 22 (A).

  Further, in the present embodiment, the description has been given assuming that the stiffening bar is a wooden bar 5 and the stiffening plate is a structural plywood 6, but the stiffening bar is a metal bar (square). Tube material) or a circular tube material such as a single tube, and the material and cross-sectional shape thereof need not be particularly limited. Further, the clamp holding means 7 and 8 of the clamp device B for clamping and holding the stiffening bar may be formed in accordance with the shape of the stiffening bar so that the clamp can be reliably held.

  Further, the plate material for stiffening need not be limited to the structural plywood 6, and a steel plate or the like may be used. When a steel plate is used, the seismic energy absorption performance can be increased as compared with the present embodiment. Further, the stiffening plate material does not necessarily have to be strictly formed in a flat plate shape, and may be formed in a substantially flat plate shape (substantially flat plate shape).

  Further, as shown in FIG. 14, one of the clamp plates 7 is formed in an approximately L-shape by providing an extending portion 7d which extends orthogonally from the lower end in the width direction of the clamp device B. 7d is provided with a long hole-shaped position adjusting hole 23 extending in the width direction, the lower end side of the other clamp plate 8 is engaged with the position adjusting hole 23, and the other clamp plate 8 is connected to one clamp plate 7 in the width direction. May be connected so that it can move forward and backward.

  In this case, by sliding the other clamp plate 8 in the width direction along the position adjusting hole 23, the interval between the pair of clamp plates 7 and 8 can be easily adjusted to the size (width) of the square member 5. Can be. Further, since the other clamp plate 8 is supported by the extending portion 7d of the one clamp plate 7 so as to be able to advance and retreat, the other clamp plate 8 can be arranged independently only by engaging the lower end with the position adjusting hole 23. Can be set up.

  At this time, an engaging portion 8d is formed at the lower end of the other clamp plate 8 so as to be recessed from the side end toward the center, and the other clamp plate 8 is inserted into the position adjusting hole 23 and rotated to rotate. The extension 7d of one clamp plate 7 may be fitted into the portion 8d. Thus, the other clamp plate 8 can be more reliably disposed independently by merely engaging the lower end with the position adjusting hole 23, and can be advanced and retracted in the width direction in a stable state. .

  It is sufficient that the one clamp plate 7 and the other clamp plate 8 can be connected to each other so as to be able to relatively advance and retreat in the width direction. An engagement portion may be provided on the lower end side of the plate 7.

1. Conventional scaffolding (framework structure)
2 Building frame (framework body)
2a Bar (one bar)
3 floor board (frame body)
4 Cross bracing 5 Square bar (stiffening bar, other bar)
6 Structural plywood (plate material for stiffening)
7. One clamp plate (one clamp holding member)
7a Bending part 7b Clamp part 7c Washer 7d Extension part 8 The other clamp plate (the other clamp holding member)
8a bent portion 8b clamp portion 8c washer 8d engaging portion 9 lower bolt (clamping force applying means)
10 Upper bolt (clamping force applying means)
10a Head 11 Clamp for connecting building frame (frame body connecting means)
12 Lower bolt insertion hole 13 Upper bolt engagement hole 14 Upper bolt insertion hole 15 Nut (clamping force applying means)
16 through hole 17 nut (clamping force applying means)
18 Bracing 19 Frame body 20 Plate (stiffening plate)
21 Floor structure (frame structure)
22 Fence structure (frame structure)
23 Position adjustment hole A Frame scaffold (frame structure)
B Clamping device O1 Square material shaft O2 Clamping device shaft O3 Bar material shaft

Claims (7)

A clamp device for connecting one bar and the other prismatic bar,
A pair of clamping holding member for clamping holding the other bar being disposed so as to sandwich the other of the bar,
Clamping force applying means for applying a clamping force to the pair of clamp holding members,
Connecting means provided to be connected to the clamp holding member, and connecting the clamp holding member to the one bar,
The clamp holding member includes a plate-shaped clamp portion that contacts the other bar,
Upon holding the other of the bar, and characterized by being configured such that the clamping portion with respect to timber axis of the other of the bars are arranged to cross at an angle of 45 to 60 degrees Clamp device. The clamping device according to claim 1,
The pair of clamp holding members are each formed with the clamp portion and a bent portion provided on an upper end side and bent outward in the width direction of the clamp device with respect to the clamp portion,
One of the clamp holding members has an elongated upper bolt engaging hole extending from the bent portion to the clamp portion while being opened at an end of the bent portion on the upper end side, and the clamp portion has Formed with a lower bolt insertion hole on the lower end side,
The other clamp holding member includes an elongated upper bolt insertion hole extending from the bent portion to the clamp portion on the upper end side, and is formed with a lower bolt insertion hole on the lower end side of the clamp portion,
An upper bolt for inserting the clamp holding member into the upper bolt locking hole and the upper bolt insertion hole, fastening a nut, and connecting upper end sides of the pair of clamp holding members, and the lower bolt insertion hole; And a lower bolt connecting the lower ends of the pair of clamp holding members to each other by tightening a nut. The clamping device according to claim 2,
The one clamp holding member is formed in a substantially L-shape with an extending portion extending in the width direction from a lower end of the clamp portion, and a position adjusting hole extending in the width direction is provided in the extending portion. Formed
A clamp device, wherein the other clamp holding member has a lower end engaged with the position adjusting hole and is connected to the one clamp holding member so as to be able to advance and retreat in the width direction. In the clamp device according to claim 2 or 3,
The one clamp holding member or the other clamp holding member is integrally provided with a washer with which the head of the upper bolt is engaged around the upper bolt insertion hole or the upper bolt locking hole. A clamping device, characterized in that: In the clamp device according to any one of claims 2 to 4,
The clamp portion of the one clamp holding member and / or the other clamp holding member is provided with a through hole for screwing the clamp portion to the other bar. apparatus. A frame structure in which one bar and the other bar are connected,
A frame body including the one bar,
The other bar connected to the one bar and attached to the framework body,
Framework structure characterized by being configured with a clamping device according to claim 1 for connecting the other of the bar to the one of the bar to one of the claims 5 . The framework structure according to claim 6,
A frame structure comprising a plate-like stiffening plate member supported on the other bar member and installed on the structural surface of the frame body.

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