JP2015165088A - Fixture and method of fixing fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of workers and time for inspection.SOLUTION: A fixture is fixed to a steel scaffold board including: a scaffold board body arranged on a temporary scaffold having a steel scaffold pipe arranged in a horizontal direction; and first and second engagement sections which are fixed to the scaffold board body and arranged below the scaffold board body adjacent to each other in an axial direction of the scaffold pipe. The fixture includes: a holding member which is arranged below the scaffold pipe and holds the scaffold pipe; a pair of first engaging members fixed to the holding member, arranged above it adjacent to each other so as to hold the scaffold pipe, and engaged with the first engagement section; and a pair of second engaging members fixed to the holding member, arranged above it adjacent to each other so as to hold the scaffold pipe, and engaged with the second engagement section.

Description

  Embodiments of the present invention relate to a fixture attached to a steel scaffold plate used in a temporary scaffold such as a nuclear power plant and a method for attaching the fixture.

  In such a power plant, a lot of work for constructing a temporary scaffold has occurred in order to perform inspection work on the piping system in the regular inspection improvement work. When this inspection work is completed, the temporary scaffolding is dismantled. At this time, the wire fixing the steel scaffolding plate to the cylindrical single-pipe scaffolding pipe is cut off and discarded.

  In recent years, however, there has been an increasing demand for reducing the amount of waste from the ordering party for the radioactive waste generated at each periodic inspection improvement work. There is also a demand for waste reduction. Therefore, the reduction of waste was examined by fixing with a reusable scaffolding plate fixture. However, the fixing with this fixing tool is not used because of the insufficient tensile strength, etc., and a wire was used. This wire is straightened and then subjected to a radioactive contamination test. It was stored on the premises as the following waste.

JP 2009-102821 A JP 2011-58265 A JP 2001-173225 A Special table 2012-509426 gazette JP 2000-204755 A

  However, it is necessary to extend all the wires straight so that the radioactive contamination inspection becomes possible, and the number of man-hours is constantly increasing, which takes time and effort. In addition, even if the waste is below the clearance level of the uncontaminated wire, it is difficult to reuse and dispose of the fixed part as low-level waste because the internal contamination inspection is difficult. Furthermore, the amount of radioactive waste in drums has been increasing every time it is regularly checked, and indoor storage has been difficult.

  The present invention has been made to solve such problems, and by using a fixture that can be reused in place of the number of wires to be discarded each time, the number of workers and work time during inspection work are reduced. It is an object to provide a fixing device that can be used and a method for attaching the fixing device.

  In order to solve the above-mentioned problems, the fixture of the present invention is arranged in a temporary scaffold having a steel scaffold pipe arranged in a horizontal direction, and the scaffold plate body disposed on the scaffold pipe, and the scaffold plate A fixing tool that is fixed to a main body and is attached to a steel scaffolding plate having a first engaged portion and a second engaged portion that are arranged below and arranged in the axial direction of the scaffolding pipe. A holding member for holding the scaffolding pipe, and being fixed to the holding member and arranged side by side so as to sandwich the scaffolding pipe, and being engaged with the first engaged portion. A pair of first engaging members, fixed to the holding member, and arranged side by side so as to sandwich the scaffold pipe, and engage with the second engaged portion. And a pair of second engaging members.

  In the fixing device mounting method of the present invention, the scaffolding plate main body disposed on the scaffolding pipe, which is disposed on the temporary scaffolding having the steel scaffolding pipe disposed in the horizontal direction, and fixed to the scaffolding plate main body. In the attaching method of the fixing device, the fixing device is attached to a steel scaffold plate having a first engaged portion and a second engaged portion arranged below and in the axial direction of the scaffolding pipe. The fixture includes a holding member, a pair of first engaging members, and a pair of second engaging members, the holding member is disposed under the scaffold pipe, and the scaffold pipe is A holding step; and the pair of first engaging members are fixed to the holding member and arranged side by side so as to sandwich the scaffold pipe therebetween, and are engaged with the first engaged portion. And fixing the pair of second engaging members to the holding member. And, thereabove, the aligned so as to sandwich the scaffolding pipe arranged, characterized in that it comprises the steps of: engaging said second engaged portion.

  According to the present invention, it is possible to promote the reuse of the engaging member, delete the radioactive waste, and reduce the number of workers and the working time during the inspection work.

It is a perspective view which shows the structure of the temporary scaffold which concerns on one Embodiment of this invention. It is a perspective view which shows the principal part of the steel scaffolding board of Embodiment 1 shown in FIG. FIG. 3 is a perspective view of the fixture illustrated in FIG. 2. It is a front view of the fixing tool shown in FIG. It is a side view of the fixing tool shown in FIG. It is a perspective view which shows the principal part of the other example of a steel scaffolding board. It is a side view which shows the modification of a fixing tool. It is a perspective view which shows the principal part of the steel scaffolding board of Embodiment 2. FIG. It is a perspective view of the fixing tool shown in FIG. It is a front view of the fixing tool shown in FIG. It is a side view of the fixing tool shown in FIG. It is a partial front view which shows the principal part of the modification 1 of a fixing tool. It is a partial front view which shows the principal part of the modification 2 of a fixing tool. It is a partial front view which shows the principal part of the modification 3 of a fixing tool. It is a perspective view which shows other embodiment of a fixing tool. It is a side view of the fixture containing the mark member and connection member (and fixture main body) which performed the bead processing of Embodiment 4. FIG. 17a is a plan view of the mark member shown in FIG. FIG. 17b is a front view of the mark member shown in FIG. FIG. 17c is a detailed view of part A of FIG. 17b. It is a side view of the fixture containing the mark member and connection member (and fixture main body) which performed the bending process of Embodiment 4. FIG. 19a is a plan view of the mark member shown in FIG. FIG. 19B is a front view of the mark member shown in FIG. FIG. 19c is a detailed view of part B of FIG. 19b. It is the schematic including the cross section which looked at the state in which the fixing tool containing the mark member and connection member shown in FIG. 16 attached to the steel scaffolding board from the side surface side of the scaffolding board main body. It is the perspective view which looked at the state in which the fixing tool containing the mark member shown in FIG. 16 and a connection member was attached to the steel scaffolding board from the lower surface side of the scaffolding board main body. It is a top view which shows the state with which the mark member shown in FIG. 16 was mounted | worn with the scaffold board main body.

(Embodiment 1)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a temporary scaffold 10 according to an embodiment of the present invention.

  As shown in FIG. 1, the temporary scaffold 10 includes a plurality of single-pipe scaffolding pipes 11 arranged in a substantially vertical direction, and a single-pipe scaffolding pipe (hereinafter referred to as “horizontal scaffolding pipe”) 12 arranged in a substantially horizontal direction. And a steel scaffolding plate 20 that is bridged on a plurality of horizontal scaffolding pipes 12 that are combined with each other by a single scaffolding pipe 13 that is disposed in an oblique direction, and that is disposed at a predetermined height.

  The steel scaffold plates 20 are arranged at a suitable height, in this embodiment, for example, a plurality of places on the horizontal scaffolding pipe 12 at the third stage from the bottom of the paper surface of FIG. This steel scaffold board 20 enables transportation of materials, placement, traffic of workers, movement to high places, and the like. In this steel scaffold plate 20, the arrangement direction of a plurality of bridged horizontal scaffold pipes 12 is the longitudinal direction of the steel scaffold plate 20 (the thickness direction of the paper surface), and the axial direction of the transverse scaffold pipe 12 is The short direction of the steel scaffold board 20 (the left-right direction of the paper surface).

FIG. 2 is a perspective view showing a main part of the steel scaffolding plate 20 of the first embodiment shown in FIG.
As shown in FIG. 2, the steel scaffold plate 20 includes a scaffold plate body 21, a rib 22, and a fixture 25. In FIG. 2, a part of the scaffold plate main body 21 and the rib 22 (a part of the steel scaffold plate 20 in the longitudinal direction) is cut away.

  As for the scaffolding board main body 21 which consists of steel board | plate materials, the end surfaces 21a and 21b along a longitudinal direction are each bend | folded by the cross-sectional U shape in the downward direction. The end surfaces 21 a and 21 b of the scaffold board main body 21 have functions of legs that are placed on the horizontal scaffold pipe 12.

  A rib 22 having a function as a reinforcing member is disposed along the longitudinal direction of the scaffold board main body 21 in order to increase the strength of the steel scaffold board 20 at the center portion in the short direction of the lower surface of the scaffold board main body 21. Has been. The rib 22 is formed integrally with the scaffold board main body 21 and is bent along the longitudinal direction of the scaffold board main body 21 into a T-shaped cross section downward.

  The ribs 22 are arranged in the longitudinal direction of the scaffold board main body 21 (the axial direction of the lateral scaffold pipe 12), and are arranged so as to protrude substantially horizontally on the left and right in the lateral direction of the scaffold board main body 21. The engaged portions 23 and 24 are provided. The first and second engaged portions 23 and 24 have a function of fixing the scaffold plate main body 21 to the lateral scaffold pipe 12 by the engaged fixture 25.

FIG. 3 is a perspective view of the fixture 25 shown in FIG.
FIG. 4 is a front view of the fixture 25 similarly. FIG. 5 is also a side view of the fixture 25.
In FIGS. 4 and 5, the numbers of similar members existing behind the paper in the thickness direction are shown in parentheses.
As shown in FIGS. 2 and 3, the fixture 25 includes a holding member 26 and a pair of holding portions 27 and 28.

  As shown in FIGS. 3 to 5, the holding member 26 is disposed under the side scaffolding pipe 12. The holding member 26 has end faces 26a and 26b arranged in the front and rear of the horizontal scaffolding pipe 12 in the axial direction (for example, the left and right direction of the paper surface of FIG. 5). As for this holding member 26, end surface 26a, 26b is each bent by the cross-sectional U shape in the upward direction.

  Grooves 26c and 26d for holding the horizontal scaffolding pipe 12 are provided on the upper sides of the end faces 26a and 26b, respectively. The groove portions 26 c and 26 d are formed by curves that substantially match the outer diameter of the lateral scaffold pipe 12. The horizontal scaffolding pipe 12 is held by the holding member 26 by engaging with the grooves 26c and 26d.

  The pair of holding portions 27 and 28 includes a pair of first engaging members 27a and 28a, a pair of second engaging members 27b and 28b, a pair of first side plates 27c and 28c, and a pair of second engaging members. Side plates 27d and 28d and a pair of bottom plates 27e and 28e, respectively.

  The first engaging member 27a is fixed to the holding member 26 via the first side plate 27c. The first engaging member 27a has, for example, two first projecting members 27f and 27f having a substantially right triangular shape projecting in the right direction on the paper surface of FIG. The first projecting members 27f and 27f are arranged such that their horizontal sides (lower sides) can abut on the upper surface of the first engaged portion 23, respectively.

  The first engagement member 28a is fixed to the holding member 26 via the first side plate 28c. The first engaging member 28a has, for example, two substantially triangular projecting members 28f and 28f that project in the right direction on the paper surface of FIG. The first projecting members 28f and 28f are arranged such that their horizontal sides (lower sides) can come into contact with the upper surface of the first engaged portion 23, respectively.

  The pair of first engaging members 27a and 28a are arranged above the holding member 26, for example, side by side in the left-right direction on the paper surface of FIG. Further, the pair of first engaging members 27a, 28a are detachably engaged with the first engaged portion 23 by the pair of first projecting members 27f, 27f, 28f, 28f.

  The second engaging member 27b is fixed to the holding member 26 via the second side plate 27d. The second engaging member 27b has, for example, two second projecting members 27g and 27g having a substantially right triangle shape projecting leftward in the drawing of FIG. The second projecting members 27g and 27g are arranged such that their horizontal sides (lower sides) can come into contact with the upper surface of the first engaged portion 24, respectively.

  The second engagement member 28b is fixed to the holding member 26 via the second side plate 28d. The second engaging member 28b has, for example, two second projecting members 28g and 28g having a substantially right triangle shape projecting leftward in the drawing of FIG. The second projecting members 28g and 28g are arranged such that their horizontal sides (lower sides) can contact the upper surface of the first engaged portion 24, respectively.

  The pair of second engagement members 27 b and 28 b are arranged to face the pair of first engagement members 27 a and 28 a side by side in the axial direction of the lateral scaffold pipe 12. The pair of second engaging members 27b and 28b are arranged above the holding member 26, for example, side by side in the horizontal direction on the paper surface of FIG. Further, the pair of second engaging members 27b, 28b are detachably engaged with the second engaged portion 24 by the pair of second projecting members 27g, 27g, 28g, 28g.

  The pair of first side plates 27c and 28c connect and fix the pair of first engaging members 27a and 28a to the holding member 26, respectively. The pair of first side plates 27c and 28c are arranged, for example, side by side in the left-right direction on the paper surface of FIG. 4 so as to sandwich the horizontal scaffolding pipe 12.

  The pair of second side plates 27d and 28d are arranged to face each other in the axial direction of the pair of first side plates 27c and 28c and the horizontal scaffolding pipe 12, for example, in the horizontal direction of the paper surface of FIG. The second engaging members 27b and 28b are connected and fixed, respectively. Further, the pair of second side plates 27d and 28d are arranged, for example, side by side in the left-right direction on the paper surface of FIG. 4 so as to sandwich the horizontal scaffolding pipe 12.

  As a result, the first and second side plates 27c and 27d and the first and second side plates 28c and 28d are arranged in the axial direction of the horizontal scaffolding pipe 12, for example, in the left-right direction on the paper surface of FIG. The first and second engaging members 27a and 27b and the first and second engaging members 28a and 28b are arranged so as to sandwich the engaged portions 23 and 24, respectively. Engage with engaged parts 23 and 24, respectively.

The bottom plate 27e of the pair of bottom plates 27e, 28e is connected and fixed to the right end of the holding member 26, for example, the paper surface of FIG. 4, and aligned in the axial direction of the horizontal scaffolding pipe 12, for example, the left-right direction of the paper surface of FIG. Are connected to the first and second side plates 27c and 27d facing each other.
Further, the bottom plate 28e of the pair of bottom plates 27e, 28e is connected and fixed to the left end of the holding member 26, for example, the paper surface of FIG. 4, and in the axial direction of the horizontal scaffolding pipe 12, for example, the horizontal direction of the paper surface of FIG. Are connected to the first and second side plates 28c, 28d facing each other.

  The first and second side plates 27c and 27d and the bottom plate 27e are formed by integrally formed leaf springs. The first side plate 27c and the second side plate 27d have elasticity, and the first side plate 27c has a distal end on the first engagement member 27a side and the second side plate 27d on the second engagement member 27b side. The tip can be moved in the left-right direction, for example, as shown by the arrow in FIG.

  Similarly, the first and second side plates 28c, 28d and the bottom plate 28e are integrally formed leaf springs. The first side plate 28c and the second side plate 28d have elasticity, and the first side plate 28c has a distal end on the first engagement member 28a side and the second side plate 28d on the second engagement member 28b side. For example, as shown by the arrow in FIG.

  The distance between the tips of the pair of first side plates 27c, 28c and the pair of second side plates 27d, 28d of the fixture 25 shown in FIG. 5 is between the first and second engaged portions 23, 24. It is desirable that the width is equal to or slightly longer.

  The distance between the pair of first projecting members 27f and 28f and the pair of second projecting members 27g and 28g is greater than the width between the first and second engaged portions 23 and 24 by the elasticity of the leaf spring. It is desirable that the time when it is spread by force is longer and it is shorter than the width between the first and second engaged parts 23 and 24 when engaged.

  When the scaffolding plate body 21 is attached to the horizontal scaffolding pipe 12 by the fixing tool 25 configured as described above, the fixing tool 25 is held in a state where the horizontal scaffolding pipe 12 is held by the holding member 26 as shown in FIG. For example, 25 is moved upward as shown by an arrow in FIG.

  When the inclined sides (long sides) of the first and second projecting members 27f, 28f, 27g, and 28g come into contact with the first and second engaged portions 23 and 24, a pair of springs are elastically applied by the elastic force of the leaf springs. The first and second side plates 27c, 28c, 27d and 28d are bent to open their tips. Further, when the fixture 25 is moved upward, for example, as indicated by an arrow in FIG. 5, a pair of the first and second engaged portions 23 and 24 and the first and second engaging portions are paired. The first and second projecting members 27f, 28f, 27g, and 28g are released from contact with the inclined sides (long sides), and a pair of first and second side plates 27c, 28c, The tips of 27d and 28d are narrowed, and the horizontal sides (lower sides) of the pair of first and second projecting members 27f, 28f, 27g, and 28g are in contact with the upper surfaces of the first and second engaged portions 23 and 24. It can be attached.

  Further, when removing the fixture 25, the elastic force of the leaf spring is used to bend the pair of first and second side plates 27c, 28c, 27d, 28d to open their tips, and the first, second When the contact between the engaged portions 23 and 24 and the horizontal sides (lower sides) of the first and second projecting members 27f, 28f, 27g, and 28g is released and the fixture 25 is moved downward, the plate The tip of the spring can be closed using the repulsive force of the spring.

  Thus, in this embodiment, the scaffold board main body 21 bridged by the temporary scaffold, the pair of first and second engaged portions 23 and 24 arranged on the lower surface of the scaffold board main body 21, and the lateral scaffold Since the steel scaffolding plate 20 is constituted by the fixture 25 that engages with the first and second engaged portions 23 and 24 while holding the pipe 12, a configuration that can be reused instead of the number wire It is possible to reduce the number of workers and the work time during the inspection work of the piping system.

  That is, for example, in a regular inspection and improvement work at a nuclear power plant or the like, it takes a lot of work to extend one line or one so that the bent wire at the time of assembling the temporary scaffold 10 can be inspected, such as radioactive contamination inspection. It will take time.

On the other hand, since the steel scaffolding plate 20 according to this embodiment maintains a certain shape that is always easy to inspect before and after use, it is easy to inspect radioactive contamination, etc. Work such as extending straight becomes unnecessary.
As a result, the steel scaffolding plate 20 according to this embodiment can eliminate this troublesome work in, for example, a regular inspection improvement work such as a nuclear power plant, thereby reducing the number of workers and the work time during the inspection work of the piping system. be able to.

  Moreover, in this embodiment, the fixing tool 25 for fixing the horizontal scaffold pipe 12 to a pair of 1st, 2nd to-be-engaged parts 23 and 24 attached to the scaffold board main body 21 of the steel scaffold board 20. Therefore, it is easy to attach the steel scaffolding plate 20, and the working time can be reduced.

  In this embodiment, the pair of first and second engagements are made so as to sandwich the pair of first and second engaged portions 23 and 24 using the elastic force and repulsive force of the leaf spring. Since the members 27a, 28a, 27b, and 28b are engaged, the work of attaching the steel scaffolding plate 20 is easy and the working time can be reduced. In addition, with this configuration, the pair of first and second engaged portions 23 and 24 and the pair of first and second engaging members 27a, 28a, 27b, and 28b and the disengagement are also not affected by the elasticity of the leaf spring. It can be easily performed with a force and a repulsive force, and the removal work and fine adjustment work of the steel scaffolding plate 20 are facilitated, and the working time can be further reduced.

  In this embodiment, the horizontal scaffolding pipe 12 held on the holding member 26 is engaged with the pair of first and second engaged portions 23 and 24 of the upper rib 22. Further, the lateral scaffold pipe 12 is disposed so as to be sandwiched between the pair of first side plates 27c and 28c and the second side plates 27d and 28d. As a result, the fixing tool 25 is engaged with the rib 22 in the vertical direction, the horizontal direction, and the thickness direction shown in FIG. The tool 25 can be easily fixed and arranged at a desired position of the rib 22.

  In this embodiment, the first and second projecting members of the pair of first and second engaging members 27a, 28a, 27b, and 28b are engaged with the first and second engaged portions 23 and 24, respectively. Thus, the engagement and disengagement operations can be performed smoothly and easily. As a result, it is possible to easily perform the fixing arrangement of the fixing tool 25 with respect to the rib 22, the cancellation of the fixing arrangement, and the fine adjustment of the fixing arrangement position.

  Moreover, in this embodiment, since the scaffold board main body 21 can be fixed to the horizontal scaffold pipe 12 from the lower side of the scaffold board main body 21 by the fixing tool 25, there is no protrusion etc. which becomes an obstacle on the upper part of the scaffold, and the operator The risk of whispering can be reduced and safety can be improved.

  FIG. 6 is a perspective view showing a main part of another example of the steel scaffolding plate 20. In FIG. 6, a part of the scaffold board main body 21 (a part in the longitudinal direction of the steel scaffold board 20) is shown broken away.

  In this other example, the scaffold plate body 21 is composed of two steel plate materials 31 and 32. The plate 31 has one end face 31a along the longitudinal direction bent downward in a U-shaped cross section, and the other end face 31b along the longitudinal direction bent downward in a U-shaped cross section. In the plate member 32, one end face 32a along the longitudinal direction is bent downward in a U-shaped cross section, and the other end face 32b along the longitudinal direction is bent downward in a U-shaped cross section.

The bent end surfaces 31a, 31b, 32a, and 32b have the same configuration as the end surfaces 21a and 21b in FIG. 2, and have functions of legs that are placed on the horizontal scaffolding pipe 12 shown in FIG. ing.
Further, the bent end surfaces 31a and 31b have, for example, substantially the same shape.
Further, the bent end faces 32a and 32b have substantially the same shape, for example.

  These end faces 31b and 32a have a partial function of the rib 22 shown in FIGS. That is, as shown in FIG. 6, these end surfaces 31 b and 32 a are arranged in the longitudinal direction of the scaffold board main body 21 (the axial direction of the lateral scaffold pipe 12) and substantially horizontally to the left and right in the lateral direction of the scaffold board main body 21. It is comprised similarly to the 1st, 2nd to-be-engaged parts 23 and 24 arrange | positioned protrudingly.

  In this other example, the same effects as those of the first embodiment are obtained, and the functions of the first and second engaged portions 23 and 24 of the rib 22 are provided on the end surfaces 31b and 32a having the functions of the legs. Therefore, the number of parts of the steel scaffold board can be further reduced.

(Modification)
FIG. 7 is a side view showing a modification of the fixture.
As shown in FIG. 7, in this modified example, the difference from the first embodiment is that the end surfaces 26a, 26b of the holding member 26 and the pair of first and second side plates 27c, 28c, 27d, 28d do not contact each other. The point is that they are separated.

  In this modified example, the same effect as that of the first embodiment is obtained, and the bending of the pair of first and second side plates 27c, 28c, 27d, 28d toward the end surfaces 26a, 26b of the holding member 26 increases. The elastic force of the leaf spring toward the end faces 26a, 26b can also be increased.

(Embodiment 2)
FIG. 8 is a perspective view showing a main part of the steel scaffold plate 40 of the second embodiment.
As shown in FIG. 8, in the second embodiment, the difference from the first embodiment is that a rib 42 as a reinforcing member of the steel scaffolding plate 40 is provided at the center of the bottom surface of the scaffolding plate body 41 in the short direction. The plate body 41 is bent along the longitudinal direction of the plate body 41 and downward in a triangular shape.

  The ribs 42 are arranged in the longitudinal direction of the scaffold board main body 41 (the axial direction of the lateral scaffold pipe 12), and are arranged to project with a predetermined inclination to the left and right in the lateral direction of the scaffold board main body 41. Second engaged portions 43 and 44 are provided. The first and second engaged portions 43 and 44 have a function of fixing the scaffold plate main body 41 to the lateral scaffold pipe 12 by the engaged fixture 45. The first and second engaged portions 43 and 44 have inclined surfaces (upper surfaces) with symmetrical inclination angles.

  FIG. 9 is a perspective view of the fixture 45 shown in FIG. FIG. 10 is also a front view of the fixture 45. FIG. 11 is also a side view of the fixture 45. In FIGS. 10 and 11, the numbers of similar members existing behind the paper in the thickness direction are shown in parentheses.

  As shown in FIGS. 9 to 11, the pair of holding portions 47 and 48 includes a pair of first engaging members 47 a and 48 a, a pair of second engaging members 47 b and 48 b, and a pair of first engaging members. Side plates 47c and 48c, a pair of second side plates 47d and 48d, and a pair of bottom plates 47e and 48e are provided.

  The pair of first engaging members 47a and 48a are fixed to the holding member 46 via the pair of first side plates 47c and 48c. The pair of first engaging members 47a, 48a are, for example, a pair of first projecting members 47s, which are convex in the right direction of the paper surface of FIG. 11 and bent along the thickness direction of the paper surface. 48s. The pair of first engaging members 47a and 48a has an inclined surface (lower surface) disposed so as to be opposed to and in contact with the inclined surface (upper surface) of the first engaged portion 43. .

  That is, the pair of first engaging members 47a and 48a are detachably engaged with the first engaged portion 43 by the pair of first projecting members 47s and 48s. In addition, it is desirable that the inclination angles of the inclined surface of the first engaged portion 43 and the inclined surfaces of the first engaging members 47a and 48a are substantially equal.

  The pair of second engaging members 47b and 48b are fixed to the holding member 46 via a pair of second side plates 47d and 48d. The pair of second engaging members 47b, 48b are, for example, a pair of second projecting members 47t, which are convex in the left direction of the paper surface of FIG. 11 and bent along the thickness direction of the paper surface. 48t. The pair of second projecting members 47t and 48t have an inclined surface (lower surface) disposed so as to be opposed to and in contact with the inclined surface (upper surface) of the second engaged portion 44.

  That is, the pair of second engaging members 47b and 48b are detachably engaged with the second engaged portion 44 by the pair of second projecting members 47t and 48t. In addition, it is desirable that the inclination angles of the inclined surface of the second engaged portion 44 and the inclined surfaces of the first engaging members 47a and 48a are substantially equal.

  Accordingly, the first and second side plates 47c and 47d and the first and second side plates 48c and 48d are arranged in the axial direction of the horizontal scaffolding pipe 12, for example, in the left-right direction on the paper surface of FIG. The first and second engaging members 47a and 47b and the first and second engaging members 48a and 48b are arranged so as to sandwich the engaged portions 43 and 44, respectively. Engage with engaged parts 43 and 44, respectively.

In this way, the first and second engaged portions 43 and 44 and the first and second engaging members 47a, 48a, 47b, and 48b are engaged with each other on the inclined surfaces. In this case, if the elastic force of the leaf spring is weak, the fixing tool 45 may be detached from the scaffold plate body 41 as it is.
Thus, in this embodiment, the pair of first side plates 47c and 48c are provided with a pair of first hole portions 47f and 48f, respectively, and the pair of second side plates 47d and 48d are paired with a second hole portion. 47g and 48g are provided. Further, the pair of second holes 47g and 48g are arranged to face the pair of first holes 47f and 48f.

  In this embodiment, a pair of third engagement members 49, 50 that engage with the pair of first holes 47f, 48f and the second holes 47g, 48g are provided, and the fixture 45 is attached to the scaffold plate body 41. When being engaged with each other, the distance between the first side plates 47c and 48c and the second side plates 47d and 48d is suppressed so as not to open beyond a certain distance.

  Therefore, in this embodiment, the pair of first and second holes 47f, 48f, 47g, and 48g are formed on the pair of first and second side plates 47c, 48c, 47d, and 48d, for example, the paper surface of FIG. For example, it is formed in a long S shape along the vertical direction.

  Furthermore, in this embodiment, a pair of 3rd engaging members 49 and 50 engaged with a pair of 1st hole parts 47f and 48f and 2nd hole parts 47g and 48g are provided. That is, the third engagement member 49 is slidably engaged with the first hole 47f and the second hole 47g, and the third engagement member 50 is connected with the first hole 48f and the second hole 47g. The two holes 48g are slidably engaged.

  The pair of third engaging members 49 and 50 are paired with a pair of first stoppers 51 and 53 for suppressing the distance between the first side plates 47c and 48c and the second side plates 47d and 48d to a constant distance. The second stoppers 52 and 54 are arranged at both ends, for example, made of fastening pins.

  As shown in FIGS. 10 and 11, the diameters of the first and second stoppers 51, 53, 52, 54 are formed larger than the widths of the first and second holes 47f, 48f, 47g, 48g, The fastening pins (third engaging members 49, 50) can be prevented from falling off the first and second holes 47f, 48f, 47g, 48g, and the first side plates 47c, 48c and the second side plates can be prevented. The distance between 47d and 48d can be suppressed to the distance between the first and second stoppers 51, 53, 52 and 54. The distance between the first and second stoppers 51, 53, 52, 54 is preferably set slightly shorter than the width of the rib 42, for example.

  When the scaffolding plate main body 41 is attached to the horizontal scaffolding pipe 12 by the fixture 45 configured as described above, first, as shown in FIG. The holes 47f, 48f, 47g, and 48g are arranged below the paper surface. Then, in a state where the horizontal scaffolding pipe 12 is held by the holding member 46, the fixture 45 is moved upward in the drawing.

  When the first and second projecting members 47s, 48s, 47t, and 48t are brought into contact with the first and second engaged portions 43 and 44, the pair of first and second members are caused by the elastic force of the leaf springs. The side plates 47c, 48c, 47d, and 48d are bent to open their tips. Further, when the fixture 45 is moved upward in the drawing, the first and second projecting members 47s, 48s, 47t, and 48t are formed on the inclined surfaces (upper surfaces) of the first and second engaged portions 43 and 44, respectively. The inclined surface (bottom surface) of the abuts.

  Next, when the third engaging members 49, 50 are moved above the first and second hole portions 47f, 48f, 47g, 48g using a Shino (not shown) or the like, the first, second The front ends of the side plates 47c, 48c, 47d and 48d are narrowed, the inclined surfaces (lower surfaces) of the pair of first and second projecting members 47s, 48s, 47t and 48t and the first and second engaged portions 43, The contact with the inclined surface (upper surface) 44 becomes stronger and can be attached. At this time, the third engagement members 49 and 50 are locked in the middle of the first and second holes 47f, 48f, 47g, and 48g.

  Further, when the fixing tool 45 is removed, the third engaging members 49, 50 are moved below the first and second hole portions 47f, 48f, 47g, 48g using a Shino (not shown) or the like. The front ends of the first and second side plates 47c, 48c, 47d, and 48d are opened, the inclined surfaces (upper surfaces) of the first and second engaged portions 43 and 44, and the first and second projecting members 47s, When the abutment of the inclined surfaces (lower surfaces) of 48s, 47t, and 48t is released and the fixture 45 is moved downward, the distal end thereof can be opened using the elastic force of the leaf spring.

  As described above, in this embodiment, the same effects as those of the first embodiment are obtained, and the third engagement members 49 and 50 that engage with the first and second holes 47f, 48f, 47g, and 48g are raised. Since the tips of the first and second side plates 47c, 48c, 47d, and 48d can be narrowed by moving in the direction, the fixing tool 45 may be detached from the scaffold plate body 41 even if the elastic force of the leaf spring is weak. Thus, the scaffold plate body 41 can be satisfactorily attached to the lateral scaffold pipe 12.

  In this embodiment, since the first and second holes 47f, 48f, 47g, and 48g are formed in an S-shape, the third engagement member even if the elastic force of the leaf spring is weak. 49 and 50 are hooked on the curved portion of the hole, and the scaffold plate body 41 can be satisfactorily attached to the lateral scaffold pipe 12.

(Modification)
FIG. 12 is a partial front view showing a main part of Modification 1 of the fixture. In FIG. 12, only the first side plate 48c is shown, and other side plates having the same configuration as that of the first side plate 48c are omitted. In the following drawings, other side plates are omitted in the same manner. Moreover, in FIG. 12, the number of the same member which exists in the back of the thickness direction of a paper surface is displayed in parenthesis. Also, in FIG. 13 and FIG. 14, the numbers of similar members existing behind are also displayed in parentheses.

As shown in FIG. 12, in this modification, the first side plate 48c has a linear first hole 48j. The second side plate 48d has a second hole 48k having the same shape as the first hole 48j.
When the elastic force of the leaf spring is strong, the third engagement member (not shown) is locked at a predetermined position of the hole even if the holes 48j and 48k are configured in a straight line. Can withstand.

  Thus, in this modified example, since the holes 48j and 48k are formed in a straight line shape, it is easy to manufacture the fixture, and the manufacturing time can be shortened.

FIG. 13: is a partial front view which shows the principal part of the modification 2 of a fixing tool.
As shown in FIG. 13, in this modification, the first side plate 48c has a first hole 48l having a single curved shape. The second side plate 48d has a second hole 48m having the same shape as the first hole 48l.
Regardless of the elasticity of the leaf spring, if one curved part is formed in the holes 48l and 48m, the third engaging member (not shown) is locked to this curved part. Can withstand use.

  Thus, in this modified example, since the holes 48l and 48m are formed in one curved shape, the same effect as the modified example is obtained, and at a predetermined position (curved portion) of the third engaging member. Can be locked.

FIG. 14 is a partial front view showing a main part of Modification 3 of the fixture.
As shown in FIG. 14, in this modification, the first side plate 48c has a hole portion 48n formed of a curved portion that is curved at a substantially right angle. The second side plate 48d has a second hole 48o having the same shape as the first hole 48n.
As in the second modification, regardless of the elasticity of the leaf spring, if the curved portion is formed in the holes 48n and 48o, the third engaging member (not shown) is securely locked to the curved portion. So, it can withstand use sufficiently.

  Thus, in this modification, since the holes 48n and 48o are formed in a substantially right-angled curved part, the same effect as that of the modified example is obtained, and a predetermined position (curved part) of the third engagement member is obtained. It is possible to securely lock in.

(Embodiment 3)
FIG. 15 is a perspective view showing another embodiment of the fixture.
As shown in FIG. 15, in this embodiment, the difference from the second embodiment is that in the fixture 45, the pair of first projecting members 47s and 48s and the pair of second projecting members 47t and 48t are inclined surfaces. The first concavo-convex portions 47h and 48h and the second concavo-convex portions 47i and 48i are provided on the (lower surface), respectively.

  The first and second concavo-convex portions 47h, 48h, 47i, and 48i are arranged side by side in a sawtooth shape, for example, side by side in the axial direction of a lateral scaffold pipe (not shown). The first and second concavo-convex portions 47h, 48h, 47i, and 48i are in contact with inclined surfaces (lower surfaces) of first and second engaged portions (not shown), respectively.

  Thus, in this embodiment, the first and second projecting members 47s, 48s, 47t, and 48t are arranged side by side in the axial direction of the horizontal scaffolding pipe, and are respectively disposed on the first and second engaged portions. Since the concave and convex portions that come into contact with each other are provided, when the fixture 45 is engaged, the tips of the concave and convex portions can bite into the inclined surfaces (upper surfaces) of the first and second engaged portions, thereby increasing the frictional force.

(Embodiment 4)
FIG. 16 is a side view of a fixture 70 including a mark member 71, a connecting member 72, and a fixture body (for example, the fixture 45 of the fourth embodiment) according to the fourth embodiment. 17 is a plan view of the mark member 71, FIG. 18 is a front view of the mark member 71, and FIG. 19 is a detailed view of a portion A in FIG. Further, FIG. 20 is a schematic view including a cross-section of the fixture 70 including the mark member 71 and the connecting member 72 as viewed from the side surface side of the scaffold board body 21 when attached to the steel scaffold board 20. FIG. 21 is a perspective view of the state in which the fixture 70 including the mark member 71 and the connecting member 72 is attached to the steel scaffolding plate 20 as viewed from the lower surface 21h side of the scaffolding plate body 21. Further, FIG. 22 is a plan view showing a state in which the mark member 71 is attached to the scaffold board main body 21.

  The fixture 70 of Embodiment 4 is configured based on the following background. That is, the fixture main body (for example, the fixture 45 main body) is fixed to the lower surface (bottom surface) side of the scaffold board main body 21, so that the fixture main body is attached even when viewed from the upper surface side of the scaffold board main body 21. It is difficult to confirm whether or not Furthermore, there is a possibility that the fixture main body may be dropped when the fixture main body is removed.

  Therefore, as shown in FIGS. 16, 20, 21, and the like, the fixture 70 of the fourth embodiment has a fixture main body (for example, the fixtures 25 and 45 main body exemplified in the first to third embodiments), A mark member 71 and a connecting member 72 are further provided. The connecting member 72 is constituted by a chain having a length of about several centimeters or several tens of centimeters, for example, and connects the mark member 71 and the fixture 45 main body. As shown in FIGS. 16, 20, 21, and the like, the one end 72 a of the connecting member 72 is locked to the holes 48 f and 48 g of the fixture 45 main body. Further, as shown in FIG. 21, the other end 72b of the connecting member 72 is locked in a hole 71p of a mark member 71 described later.

  Here, although description is omitted in the first to third embodiments, a plurality of hole portions 21e are perforated in the scaffolding plate body 20 in order to ensure the anti-slip of the worker and the brightness of the entire temporary scaffolding. Has been. Specifically, as shown in FIGS. 20 to 22, the scaffold board body 21 is formed with a plurality of holes 21e by punching from the lower surface 21h side to the upper surface 21g side. Further, since a plurality of holes 21e are formed by such punching, the scaffold board main body 21 protrudes from the periphery of the hole 21e toward the upper surface 21g side of the scaffold board main body 21 as shown in FIG. A protruding portion 21c is further formed.

  On the other hand, as shown in FIGS. 20 to 22, the mark member 71 is detachably attached to the edge portion 21 d of such a hole portion 21 e drilled in the scaffold board body 20. That is, the mark member 71 connected to the fixing tool 45 main body by the connecting member 72 serves as a mark indicating that the fixing tool 45 main body is attached to the steel scaffolding plate 20. Specifically, the mark member 71 is configured by bending a plate spring material such as stainless steel (for example, a plate spring material made of SUS), for example, as shown in FIG. And an arm portion 71k having an L-shaped cross section.

  As shown in FIGS. 16 to 17C, the arm portion 71m and the arm portion 71k of the mark member 71 are subjected to bead processing which is a kind of drawing processing, whereby the bead portions 71g and 71h are respectively formed. Is formed. Thereby, the rigidity (mechanical strength) of the mark member 71 is enhanced.

  Further, as shown in FIGS. 18 to 19 (c), as another processing example for increasing the rigidity, the arm portion 71m and the arm portion 71k of the mark member 71 are subjected to a folding process, so that Portions 71q and 71r are respectively formed.

  The mark member 71 includes a pair of clamping portions 71a and 71b formed by embossing the arm portion 71m and the arm portion 71k, respectively. Specifically, as a result of such embossing being performed, the pair of sandwiching portions 71a and 71b, as shown in FIGS. 18 and 19, are paired with the pair of convex portions 71c and 71d and the pair of convex portions. And a pair of recesses 71e and 71f positioned on the back side of 71c and 71d, respectively.

  Here, in the mark member 71 formed by bending stainless steel or the like, a portion including at least the pair of sandwiching portions 71a and 71b (at least in the vicinity of the pair of sandwiching portions 71a and 71b) has a leaf spring structure. Yes. In other words, the pair of sandwiching portions 71a and 71b (a pair of convex portions 71c and 71d) facing each other, as shown in FIGS. 16 to 22, use the edge 21d of the hole portion 21e drilled in the scaffold plate body 21 as a scaffold. The plate body 21 is elastically sandwiched from the upper surface 21g side and the lower surface 21h side. Specifically, as shown in FIG. 20, the pair of sandwiching portions 71a and 71b (the pair of convex portions 71c and 71d) has an edge 21d on the outer peripheral side of the projection 21c around the hole 21e in the scaffolding plate body 21. Pinch.

  Further, as shown in FIGS. 17 and 22, the other holding portion that holds the edge 21d of the hole 21e from the upper surface 21g side between the holding portion 71b of the pair of holding portions 71a and 71b. The other recess 21e included in 71a is painted (colored) with a specific color (for example, a red fluorescent color) that is at least different from the color around the other recess 21e.

  When the mark member 71 included in the fixture 70 configured as described above is actually attached to the hole portion 21e drilled in the scaffold plate body 21, first, the arm portion 71m of the mark member 71 is attached to the scaffold member. The plate body 21 is inserted into the hole 21e from the lower surface 21h side. Further, the positions of the pair of sandwiching portions 71a and 71b (the pair of convex portions 71c and 71d) facing each other over the projection 21c on the outer peripheral side of the hole 21e and the position of the edge 21d on the outer peripheral side of the hole 21e. The mark member 71 (the convex portions 71c and 71d of the mark member 71) is bent along the upper surface 21g and the lower surface 21h of the scaffold body 21 while bending the arm portion 71m and the arm portion 71k so as to reach the hole portion 21e. The mark member 71 is mounted on the edge 21d of the hole 21e by sliding it toward the outer peripheral side of the hole 21e (the edge 21d of the hole 21e is elastically held by the holding parts 71a and 71b). In this way, the mark member 71 can be easily attached.

  Here, when the arm portions 71m and 71k are elastically deformed and the pair of convex portions 71c and 71d get over the protrusion 21c and reach the lower edge 21d, for example, a fitting sound can be generated. Therefore, it is possible to confirm the completion of the attachment of the mark member 71. In addition, an attachment structure in which the protrusions 71c and 71d of the mark member 71 are moved over the protrusion 21c and an attachment structure in which the edge 21 is elastically sandwiched between the protrusions 71c and 71d by using a spring property are applied. This makes it difficult to remove the mark member 71 once mounted.

  When the mark member 71 is attached to the edge 21d of the hole 21e, the linearly extending arm portion 71m of the mark member 71 is opposed to the upper surface 21g of the scaffold board main body 21 as shown in FIG. Fixed to. Therefore, it is possible to suppress an operator walking on the scaffold board body 21 from tripping during walking and removing the wearing of the mark member 71.

  Further, in a state where the mark member 71 connected to the fixture 45 main body by the connecting member 72 is mounted, the arm portion 71m of the mark member 71 is exposed to the upper surface 21g side of the scaffold board main body 21 as shown in FIG. Therefore, the operator on the scaffold board main body 21 can grasp that the fixing tool 45 main body is attached below the mark member 71, and can secure safety during the work. Further, as described above, the concave portion 21e shown in FIG. 22 located on the upper surface 21g side of the scaffold board body 21 is painted (colored) with, for example, a red fluorescent color. Visibility can be improved. Furthermore, since the coating of fluorescent color or the like is applied to the recess 21e (recess), there is an advantage that the coating is difficult to drop.

  As described above, according to the fixture 70 according to the fourth embodiment, an operator on the scaffold board main body 21 fixes the lower side of the scaffold board main body 21 by visually confirming the presence or absence of the mark member 71 serving as a mark. Whether or not the tool 45 main body is attached can be easily grasped, and thereby the safety of the worker who works on the scaffold board main body 21 can be enhanced. Furthermore, according to the fixture 70 of the fourth embodiment, since the fixture 45 main body is connected to the mark member 71 via the connecting member 72, the fixture 45 main body is first attached from the steel scaffolding plate 20 side. When removing the fixture 45 main body, it is possible to prevent the main body of the fixture 45 from dropping downward. Moreover, according to the fixing tool 70 of Embodiment 4, since the mark member 71 has a structure which can be attached or detached with respect to the scaffold board main body 21, the mark member 71 can be used repeatedly.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Temporary scaffolding 11, 13 ... Single pipe | tube scaffolding pipe, 12 ... Horizontal scaffolding pipe, 20, 40 ... Steel scaffolding board 21, 31, 32, 41 ... Scaffolding board main body, 21a, 21b, 31a, 31b, 32a 32b ... the end face of the scaffolding plate body, 21c ... projection, 21d ... edge, 21e ... hole, 21g ... upper surface, 21h ... lower surface, 22, 42 ... rib, 23, 24, 43, 44 ... engaged portion, 25, 45, 70 ... fixing tool, 26, 46 ... holding member, 26a, 26b ... end face of the holding member, 26c, 26d ... groove part, 27, 28, 47, 48 ... holding part, 27a, 28a, 27b, 28b, 47a, 48a, 47b, 48b ... engaging members, 27c, 28c, 27d, 28d, 47c, 48c, 47d, 48d ... side plates, 27e, 28e, 47e, 48e ... bottom plates, 27f, 28f, 27g, 28g ... projections , 47f, 48f, 47g, 48g, 48j, 48l, 48m, 48n, 48o ... hole, 47h, 48h, 47i, 48i ... concavo-convex part, 47s, 48s, 47t, 48t ... projecting member, 49, 50 ... engagement 51, 54 ... stopper, 71 ... mark member, 71a, 71b ... clamping part, 71c, 71d ... convex part, 71e, 71f ... concave part, 71g, 71h ... bead part, 71q, 71r ... mountain folded part, 72 ... connection Element.

Claims (24)

Placed in a temporary scaffold having a steel scaffolding pipe disposed horizontally, a scaffold plate body disposed on the scaffold pipe, fixed to the scaffold plate body, and below the axial direction of the scaffold pipe In the fixture attached to the steel scaffolding plate comprising the first and second engaged parts arranged in line with
A holding member disposed under the scaffold pipe and holding the scaffold pipe;
A pair of first engaging members that are fixed to the holding member, and are arranged side by side so as to sandwich the scaffold pipe, and engage with the first engaged portion;
A pair of second engaging members that are fixed to the holding member, and are arranged above and arranged so as to sandwich the scaffold pipe, and engage with the second engaged portion;
A fixture comprising: A pair of first side plates for connecting and fixing the pair of first engaging members to the holding member, respectively;
A pair of second side plates that are arranged opposite to the pair of first side plates in the axial direction and connect and fix the pair of second engaging members to the holding member, respectively.
The fixture according to claim 1, further comprising: The pair of first side plates has a pair of first holes,
The pair of second side plates have a pair of second holes facing the pair of first holes,
The fixture according to claim 2, further comprising a pair of third engaging members that engage with the pair of first holes and the pair of second holes.   The fixture according to claim 3, wherein the first and second hole portions are formed long along the vertical direction of the first and second side plates. A pair of bottom plates that are respectively connected and fixed to the holding member and connect the pair of first side plates and the pair of second side plates facing each other;
The fixture according to claim 2, comprising a pair of leaf springs in which the pair of first and second side plates and the pair of bottom plates are integrally formed. The pair of first engaging members has a pair of first projecting members that contact the first engaged portion;
2. The fixture according to claim 1, wherein the pair of second engaging members includes a pair of second projecting members that face the pair of first projecting members and abut against the second engaged portion. .   The pair of first projecting members and the pair of second projecting members are arranged side by side in the axial direction, and each include a concavo-convex portion that abuts on the first and second engaged portions, respectively. The fixture described. A mark member that is detachably attached to an edge of the hole portion drilled in the scaffold plate body, and serves as a mark indicating that the fixture body is attached to the steel scaffold plate;
A connecting member that connects the mark member and the fixture body;
The fixture according to any one of claims 1 to 7, further comprising:   The fixture according to claim 8, wherein the mark member includes a pair of clamping portions that elastically clamp an edge of the hole portion drilled in the scaffold plate body from an upper surface side and a lower surface side of the scaffold plate body.   The fixture according to claim 9, wherein a portion of the mark member including at least the pair of sandwiching portions has a leaf spring structure.   The fixture according to claim 9 or 10, wherein the pair of sandwiching portions includes a pair of convex portions that are formed by embossing and that face each other. The scaffold plate body is formed by punching from the lower surface side to the upper surface side, thereby forming the hole portion and a protruding portion protruding from the periphery of the hole portion to the upper surface side, respectively.
The fixing tool according to any one of claims 9 to 11, wherein the pair of sandwiching portions sandwich an outer peripheral side of the projecting portion around the hole portion in the scaffold board main body. The pair of sandwiching portions is formed together with the pair of convex portions by the embossing, and includes a pair of concave portions respectively positioned on the back side of the pair of convex portions,
Furthermore, the other concave portion included in the other sandwiching portion that sandwiches the edge of the hole portion from the upper surface side between the one sandwiching portion of the pair of sandwiching portions is around the other recess. The fixture according to claim 11 or 12, which is colored with a specific color different from at least the color.   The fixture according to any one of claims 8 to 13, wherein the mark member includes a bead portion subjected to bead processing.   The fixture according to any one of claims 8 to 13, wherein the mark member includes a mountain fold portion subjected to a bending process. Placed in a temporary scaffold having a steel scaffolding pipe disposed horizontally, a scaffold plate body disposed on the scaffold pipe, fixed to the scaffold plate body, and below the axial direction of the scaffold pipe In the attaching method of the fixing device for attaching the fixing device to the steel scaffolding plate comprising the first and second engaged portions arranged in parallel,
The fixture includes a holding member, a pair of first engagement members, and a pair of second engagement members,
Placing the retaining member below the scaffold pipe and retaining the scaffold pipe;
Fixing the pair of first engagement members to the holding member, arranging the first engagement members side by side so as to sandwich the scaffold pipe, and engaging the first engaged portion;
Fixing the pair of second engaging members to the holding member, arranging the second engaging members side by side so as to sandwich the scaffold pipe, and engaging the second engaged portion;
A mounting method of a fixture including The fixture further includes a pair of first side plates and a pair of second side plates,
The pair of first side plates respectively connecting and fixing the pair of first engaging members to the holding member;
A pair of second side plates arranged opposite to the pair of first side plates in the axial direction, and connecting and fixing the pair of second engagement members to the holding member;
The method for attaching a fixture according to claim 16, further comprising: The pair of first side plates has a pair of holes,
The pair of second side plates have a pair of second holes facing the pair of first holes,
The fixture further includes a pair of third engaging members;
The fixing device attachment method according to claim 17, further comprising a step of engaging the pair of third engagement members with the pair of first holes and the pair of second holes. The first and second holes are formed long along the vertical direction of the first and second side plates,
In the engaging step, when the fixture is attached to the steel scaffolding plate, the pair of third engagement members are the pair of first holes and the pair of second holes. The attachment method of the fixing tool of Claim 18 engaged above. The fixture further includes a pair of bottom plates;
The pair of bottom plates is further connected and fixed to the holding member, respectively, and further includes the step of connecting the pair of first side plates and the pair of second side plates facing each other, and the pair of the connected pair The mounting method of the fixing tool of Claim 17 which consists of a pair of leaf | plate spring in which the 1st, 2nd side plate of this and said pair of bottom plate were integrally formed. The pair of first engaging members includes a pair of first projecting members;
The pair of second engaging members have a pair of second projecting members that face the pair of first projecting members and abut against the second engaged portion;
The pair of first projecting members abutting against the first engaged portion;
The fixing method according to claim 16, further comprising a step of the pair of second projecting members facing the pair of first projecting members and abutting on the second engaged portion. The pair of first projecting members and the pair of second projecting members have uneven portions,
The fixing method according to claim 21, further comprising a step of arranging the concave and convex portions side by side in the axial direction and abutting on the first and second engaged portions, respectively. The fixture is a mark indicating that the fixture main body is attached to the steel scaffolding plate, and is detachable with respect to the edge of the hole drilled in the scaffolding plate main body, and the mark A coupling member that couples the member and the fixture main body,
The attachment method of the fixture according to any one of claims 16 to 22, further comprising a step of attaching the mark member included in the fixture to the hole portion perforated in the scaffold board main body.   In the mounting step, the edge of the hole portion drilled in the scaffold board main body is elastically clamped by a pair of clamping sections provided in the mark member from the upper surface side and the lower surface side of the scaffold board main body. 24. A method for attaching the fixture according to 23.

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