JP6334042B1 - Uneven housing type temporary protective fence - Google Patents

Abstract

A rotating member fixing structure is simplified, impact resistance against a collision is improved, and installation work and removal work of a undulating and accommodating temporary protection fence can be made efficient. A temporary guard fence is fixed to a base gantry 2 having a recess opening upward, a flange portion 21 and a web portion 22 of the base gantry 2, and is U-shaped in a plan view. A fixing member 3 having a width smaller than the width and a rotating member 5 to which the guard rail 4 is attached are provided, and a lower portion of the rotating member 5 is rotatably attached to the fixing member 3. Mounting holes for attaching bolts 60 and nuts 61 are provided in the member 3, and when the rotating member 5 is in the lying down state, the guard rail 4 and the rotating member 5 are accommodated in the width of the web portion 22 in the short direction Y. The bolt 60 and the nut 61 are attached to the attachment hole and the turning member 5 is fixed to the fixing member 3 when the turning member 5 is in the standing state. [Selection] Figure 3

Description

  The present invention relates to a undulating and accommodating temporary protective fence used for road improvement work and the like.

  The invention of Patent Document 1 has been proposed in order to improve the efficiency of the assembly work of the temporary protective fence, eliminate the shortage of the temporary protective fence at the construction site, prevent material pain, and reduce the transportation cost. . In the present invention, the guard rail and the support column are undulating, and the support fixing spacer 3 for fixing the support column has a stepped vertical cross section, and the vertical plate 31 is connected to the lower end of the L-shaped plate 30. This support fixing spacer 3 is formed with a pair of holes 32 and a pair of holes 33, a U-bolt 26 is inserted into the hole 32 and fixed with a nut 27, and a bolt 34 is inserted into the hole 33. It is fixed with a nut 35.

Japanese Patent Application No. 2001-14553

  However, since it is tightened using a fixing spacer and multiple bolts and nuts, the number of bolts and nuts for fixing the support is large, the fixing structure is complicated, and the number of fixing spacers and bolts and nuts Reduction is difficult and there is a problem in impact resistance. In addition, because the number of bolts and nuts is large and it takes time to fix and remove by tightening, it is expected to reduce the work time and labor of temporary work of temporary protective fences and improve the work efficiency of installation and removal. ing.

  Therefore, the object of the present invention is to simplify the fixing structure of the rotating member, improve the impact resistance against collision, shorten the work time of the installation and removal work of the undulating and accommodating temporary protection fence, An object is to provide a undulating and temporary housing type protective fence that enables efficient removal work.

In order to solve the above-mentioned problem, the invention according to claim 1 is a base frame that is long in the longitudinal direction and formed with a recess opening upward, and is fixed to a flange portion of the base frame, and is viewed in plan view. And a U-shaped fixing member having a width smaller than the width of the web portion, and a rotating member to which a guard rail is attached, and the rotating member below the rotating member is in a standing state. Is attached to the fixing member so as to be rotatable about a first axis in a direction perpendicular to the axial direction of the base frame and in a direction perpendicular to the longitudinal direction of the foundation frame. An attachment hole is provided along a second axis that is orthogonal to the first axis and disposed above the first axis, and when the rotating member is in a lying state, the guard rail and the rotating member are connected to the web. Short direction of the part A undulating storage-type temporary protective fence that can be accommodated in a width, and when the rotating member is in an upright state, the rotating member can be fixed to the fixing member by attaching a fastening member to the mounting hole. is there.

  The U-shaped or U-shaped fixing member is preferably composed of a plate-shaped member. The fixing member is preferably fixed to the flange portion of the foundation frame, but may be fixed to the flange portion and the web portion, and the fixing strength is increased. The manner of fixing may be welding or fixing with a tightening member such as a bolt or nut.

  The “rotating member” is such that a rotating body having a predetermined shape such as a cylindrical body can be rotated in the first axis (the axial direction of the fastening member formed of bolts, nuts, and the like). In the standing state, the Z direction (vertical direction) is indicated.

  The “tightening member” is exemplified by a bolt and a nut, but is not limited thereto.

  Since the “first axis” and the “second axis” are set on the rotating member, the shaft rotates as the rotating member rotates.

  According to this configuration, the rotating member can be raised and lowered by the fixing member and the mounting hole provided in the second axial direction, the fixing structure is simplified, the impact resistance against the collision is improved, and the raising and lowering accommodation type temporary protection is provided. The installation time and removal work time of the fence can be shortened, and the installation and removal work can be made more efficient.

In order to solve the above-described problem, the invention according to claim 2 is directed to a first side and a second side in the longitudinal direction of the foundation frame, and the first side, wherein the fixing members are arranged to face each other. A connecting portion in a direction orthogonal to the axial direction of the standing rotating member and connecting the second side portion to the longitudinal direction of the foundation frame, and the first side portion is a flange portion. The undulating and accommodating temporary protection fence according to claim 1, wherein the undulating accommodation type temporary protective fence is fixed to the web portion and the second side portion is fixed to the web portion.

  According to this configuration, the first side portion, the second side portion, and the connecting portion are integrated, and the impact force applied to the rotating member at the time of the collision of the vehicle can be reliably received. improves.

It is a top view of the assembly completion state of the temporary protection fence of this invention embodiment. It is a front view of the assembly completion state of the temporary protection fence of this invention embodiment. (A) is an enlarged perspective view of the assembly completion state of the vicinity of the fixing member of a temporary protection fence, (b) is an enlarged perspective view from another direction. (A) is a top view of the vicinity of the fixing member of a temporary protection fence, (b) is the same front view. It is VV sectional drawing of FIG. FIG. 5 is a cross-sectional view taken along the line VI-VI in FIG. 2. It is VII-VII sectional drawing of FIG.4 (b). It is VIII-VIII sectional drawing of FIG. It is a top view of the fall state of the temporary protection fence of this invention embodiment. It is a front view of the lying state of the temporary protection fence of this invention embodiment. (A) is an expansion perspective view in the lying state of the vicinity of the fixing member of a temporary protection fence, (b) is an expansion perspective view from another direction. It is XII-XII sectional drawing of FIG. It is the perspective view which removed the guardrail and the flange part from Fig.11 (a). It is XIV-XIV sectional drawing of FIG. It is a perspective view of the state which removed the guardrail and the rotation member from FIG. It is also a plan view. It is also a front view. FIG. 16 is a partially enlarged perspective view in the vicinity of the fixing plate in FIG. 15, (b) also a plan view, and (b) a partially enlarged perspective view from another angle in the vicinity of the fixing plate in FIG. 15. FIG. 18 is a front view of the vicinity of the fixing plate of FIG. 17. It is XX-XX sectional drawing of FIG. It is XXI-XXI sectional drawing of FIG. (A) is a perspective view of the rotation member of a temporary protection fence, (b) is a perspective view from another angle similarly. (A) is a front view of the cylinder of the rotation member of a temporary protection fence, (b) is XXIIIB-XXIIIB sectional drawing of (a), (c) is a bottom view of a rotation member. (A) is a side view of the cylinder of the rotation member of a temporary protection fence, (b) is XXIVB-XXIVB sectional drawing of (a). (A) is a front view of a bracket, (b) is the same top view. It is a perspective view which shows the fixing member and rotation member of the change form of the temporary protection fence of this embodiment.

  Hereinafter, with reference to the drawings, a undulating and accommodating temporary guard fence 1 (hereinafter referred to as a temporary guard fence 1) according to a preferred embodiment of the present invention will be described.

  1 and 2 show an assembled state of the temporary protective fence 1 according to the embodiment (the rotating member 5 is in an upright state), and FIGS. The temporary protection fence 1 is one in which the above two states change with each other along with transportation, installation, removal, and the like.

As shown in the figure, the temporary protective fence 1 is long in the longitudinal direction X and fixed to the base frame 2 in which a recess opening upward is formed, and the flange portions 21 and 21 and the web portion 22 of the base frame 2. The fixing member 3 has a U-shape in a plan view and has a width W ₂ smaller than the width W ₁ of the web portion 22, and a rotating member 5 to which the guard rail 4 is attached. The lower part of the rotating member 5 is attached to the fixing member 3 so as to be rotatable about a first axis A in a direction perpendicular to the axial direction of the rotating member 5 and in the short direction Y. 5 and the fixing member 3 are provided with attachment holes 62 for attaching bolts 60 and nuts 61 along a second axis B that is orthogonal to the first axis A and disposed above the first axis A, respectively. Yes. When the rotating member 5 is in the lying down state, the guard rail 4 and the rotating member 5 can be accommodated in the width of the web portion 22 in the short direction Y. When the rotating member 5 is standing, the rotating member 5 can be fixed to the fixing member 3 by attaching a bolt 60 and a nut 61 to the mounting hole 62. The temporary protective fence 1 is preferably made of metal, for example, iron. Hereafter, each said component is demonstrated in detail.

  The base frame 2 is an H-shaped steel having flange portions 21 and 21 and a web portion 22 that define and form a gap 20 (see FIG. 5), and extends in the longitudinal direction X (the direction in which the base frame 2 extends). And an H-shaped steel material that faces an upper space 23 that is a recess that opens upward and a lower space 24 that is a recess that opens downward. Four joint mounting holes 26 (see FIG. 2) are formed at both ends of the flange portions 21 and 21 at predetermined intervals. 200, 250, 300, 350, 400, 500 mm etc. are illustrated by the horizontal width dimension (outer dimension of the transversal direction Y) of H-shaped steel materials.

  A plurality (four in FIG. 1) of fixing members 3 are provided on the upper surface 27 of the web part at equal intervals or at arbitrary intervals. The mounting position, the number, and the like of the fixing member 3 can be changed as appropriate depending on the relationship between the foundation frame 2 and the guard rail 4. For example, when a longer base frame 2 is used and a long guard rail is attached, five or more fixing members 3 can be used. On the contrary, when the guard rail is attached using the short foundation frame 2, two or three fixing members 3 can be used.

  As shown in FIGS. 3 to 7 and FIGS. 11 to 13, the fixing member 3 includes a first side portion 31 and a second side portion 32 that are arranged to face each other and are oriented in the longitudinal direction X, and a first side portion 31. And a connecting portion 33 in the lateral direction Y that connects the second side portion 32 to each other. A notch 34 is provided at the bottom of the connecting portion 33. This is because the rotating member 5 can be rotated without being obstructed by the connecting portion 34 because the lower end of the rotating member 5 is turned to the outside of the notch portion 34. Opposing sides of the connecting portion 33 are openings K (see FIG. 18). The outer side surface of the first side portion 31 is welded to the inner wall of the flange portion 21, and the lower portion of the second side portion 32 is welded to the web portion upper surface 27 of the web portion 22. The connecting portion 33 is not welded, but may be welded to the web portion upper surface 27 of the web portion 22 in order to increase the strength.

As shown in FIG. 5 and the like, the opening K at the side of the fixing member 3 opens in the short direction, and the width W _{2 in the} short direction Y is larger than the width W ₃ of the rotating member 5. The lower part of the rotation member 5 can be accommodated. The width _{W 2} of the opening K is 40 to 80% of the width _{W 1,} preferably is illustrated 50-70% and 60% in FIG. As shown in FIG. 18B, the length L in the longitudinal direction X of the fixing member 3 is larger than the width W ₄ of the rotating member 5 (see FIG. 24B), and the fixing member 3 rotates. The lower part of the moving member 5 can be accommodated.

  In the standing state of the rotating member 5, the guard rail 4 is positioned higher than the fixing member 3 (see FIGS. 3A and 3B), and in the lying state of the rotating member 5, the fixing member 3 is higher than the guard rail 4. The position falls within this range (see FIG. 11A).

  The connecting portion 33 of the fixing member 3 can increase the rigidity in the longitudinal direction X, can ensure a predetermined strength against an external force in the longitudinal direction X, and is not easily deformed. The connecting portion 33 of the fixing member 3 can increase the rigidity in the short direction Y, ensure a predetermined strength against an external force in the short direction Y, and is not easily deformed.

  As shown in FIGS. 3 to 7, 11 to 13, and 18, the rotating member 5 includes a cylindrical body 50 having a predetermined hollow structure (in the figure, a rectangular cylindrical shape), and a short side at the top of the cylindrical body 50. An attachment hole 51 of the guard rail 4 provided in the direction Y, a cylinder rotating bolt 52 whose axial direction is arranged in the first axis A direction, a guide tube 53 through which the cylinder rotating bolt 52 is inserted, and a cylinder A nut 54 attached to the rotating bolt 52 and a guide tube 55 arranged coaxially with the mounting hole 62 and guiding the insertion of the bolt 60 are provided. The cylindrical body 50 is in the Z direction in the standing state, and is parallel to the longitudinal direction X in the lying state. As shown in FIGS. 22 to 24, the guide tube 53 and the guide tube 55 are orthogonal to each other, and the guide tube 55 is above the guide tube 53 and is three-dimensionally crossed. The position of the guide tube 53 is set so that the collision between the rotating member 5 and the web portion upper surface 27 can be avoided.

The cylindrical body 50 is arranged so as to stand upright in the up-down direction Z in the upright state, and in the longitudinal direction X in the lying down state. The cylindrical body 50 has a structure that fits or loosely fits inside the lower portion of the fixing member 3. The thickness of the rotating member 5 is set in relation to the width W ₂ of the fixing member 3. The horizontal width of the cylindrical body 50 is 2 to 5 times the thickness, and the height is 5 to 7 times the horizontal width. In the standing state, the rotating member 5 has a thickness in the lateral direction Y, a lateral width in the longitudinal direction X, and a height in the vertical direction Z. The height of the rotating member 5 is set higher than the height of the fixing member 3 because the guard rail 4 is attached in the standing state, and the lower portion of the cylindrical body 50 is surrounded inside the fixing member 3. In the lying down state, the cylindrical body 50 is disposed to be inclined, the upper end portion is set higher than the height of the fixing member 3, and the lower portion of the cylindrical body 50 is surrounded inside the fixing member 3. The height, width, and thickness of the fixing member 3 are set in relation to the dimensions of the rotating member 5 and the guard rail 4. The cross-sectional shape of the cylindrical body 50 is not limited to a rectangle, and may take an appropriate shape such as a round shape, an oval shape, or an oval shape.

  As shown in FIG. 25, the attachment member 7 that connects or separates the guard rail 4 and the cylinder 50 is a bracket, and has a back portion 70 having a rectangular front shape, and a connection portion 71 that extends vertically from both ends of the back portion 70 in the same direction. 71, and flanges 72, 72 extending perpendicularly away from both ends of the connecting parts 71, 71. A guard rail rotation hole 74 is formed at the center of the back portion 70, and a guard rail fixing hole 73 is formed at the center of the collar portions 72, 72. A concave portion 75 is formed in the attachment member 7 on the front side of the central portion in plan view. In the standing state of the rotating member 5, the mounting member 7 is provided at a position higher than the fixing member 3.

  With the guard rail 4 sandwiching the back portion 70, the guard rail rotating bolts 76 (third axis C) are inserted into the guard rail fixing holes 73, 73 formed in the mounting member 7 and the mounting holes 51 formed in the rotating member 5. The guard rail rotating nut 77 is screwed and tightened. In addition, bolts 44 are inserted into two guard rail fixing holes 73 formed in the respective attachment members 7 and two holes formed in the guard rail 4, and nuts 45 are screwed and tightened. The guard rail 4 can be rotated around the guard rail rotation bolt 76 (see the third axis C in FIG. 7) by loosening the nut 77 through the recess 75.

  When the guard rail 4 and the rotating member 5 of the temporary protection fence 1 are in a lying state, both ends of the guard rail 4 are slightly deviated from both ends of the foundation frame 2, and in a standing state, the guard rail 4 is aligned with the foundation frame 2. However, this arrangement can be set appropriately. Since the joint structure between the base mounts 2 and the guard rails 4 is a general configuration, description thereof is omitted.

The width W _{5 in} the short side direction Y of one of the guard rails 4 is narrower than the width W ₆ (inner dimension) of the flange portion 21 and the second side portion 32, and in the illustrated example, 50 to 80% is exemplified. In FIG. 5, FIG. 6, FIG. 7, and FIG. Thereby, the guardrail 4 can be accommodated in the upper space 23.

  As shown in FIG. 1, the pair of first support plates 91, 91 are provided between the rotating members 5 and in the vicinity of one flange portion 21 of the foundation frame 2. The first support plate 91 is a U-shaped plate that forms a recess to be opened, and the pair of first support plates 91 and 91 are opposed to each other while the recess is open in the longitudinal direction X. It is fixed to the web part upper surface 27. Further, when the guard rail 4 is in a lying state, the upper end of the guard rail 4 is the same height as the upper ends of the first support plate 91 and the second support plate 95. The first space S1 defined by the pair of first support plates 91 and 91 accommodates bolts and nuts used when assembling the temporary protective fence 1 on site, a joint plate for connecting the foundation frame 2, and the like. A first storage box (not shown) is provided internally.

The second support plate 95 is provided in the vicinity of the other end of the foundation gantry 2. The second support plate 95 is a plate having a U-shaped or U-shaped planar shape, and both end surfaces thereof are welded to the inner wall surface of the flange portion 21. Space defined by the second supporting plate 95 is S ₂ assembles the temporary safety barrier 1, for accommodating the members or the like to be used when connecting.

  The temporary protective fence 1 in the assembled state can be changed from the assembled state to the lying down state, and can be accommodated in the upper space 23 formed in the foundation frame 2.

When changing from the assembled state to the lying down state, first, the nut 61 screwed into the bolt 60 is removed, and the bolt 60 is removed from the mounting hole 62 and the guide tube 55 corresponding to the mounting hole 62. Next, the guard rail rotating nut 77 screwed to the guard rail rotating bolt 76 is loosened. There is a gap between the inner surface of the fixing plate 3 and the outer surface of the rotating member 5 for allowing the rotation. As a result, the rotating member 5 can be rotated about the cylindrical body rotating bolt 52, and the guard rail 4 and the rotating member 5 can be rotated about the guard rail rotating bolt 76. Due to the two central axes of rotation, the guard rail 4 and the mounting member 7 pivot while maintaining a horizontal state and are accommodated in the upper space 23. The bolt 60, the nut 61, the guard rail rotating bolt 76, and the guard rail rotating nut 77 can be accommodated in a space defined by the first support plates 91 and 91. In addition, a member for connecting the base frame 2, a member for connecting the guard rail 4, and the like are accommodated in the space S ₂ defined by the pair of second support plates 95.

  On the contrary, the temporary protection fence 1 in the fallen state can be assembled from the fallen state to the completed state. The temporary protective fence 1 is piled up and loaded on the vehicle from the lying state, moved to another place, and lowered from the vehicle. The work to install in the assembled state at the place where it is lowered may be performed in the reverse order.

The effects of the temporary protective fence 1 described above will be described. The base frame 2 is long in the longitudinal direction X and has the upper space 23 formed thereon, and is fixed to the flange portion 21 and the web portion 22 of the base frame 2. The fixing member 3 having a U-shape in a plan view and having a width W ₂ smaller than the width W ₁ of the web portion 22, and a rotating member 5 to which the guard rail 4 is attached. It is attached to the fixing member 3 so as to be rotatable about a first axis A in a direction perpendicular to the axial direction of the rotating member and in the short direction, and the first axis is attached to the rotating member 5 and the fixing member 3. A mounting hole 62 for mounting a bolt 60 and a nut 61 is provided along a second axis B that is orthogonal to A and disposed above the first axis A. When the rotating member 5 is in a lying state, a guardrail is provided. 4 and fixing member 3 are webs 22 is capable of accommodating the width W ₁ in the transverse direction, when the rotating member 5 is in the standing state, the attaching bolts 60 and nuts 61 to the mounting hole 62, the rotating member 5 can be fixed to the fixing member 3 .

  According to this configuration, the fixing member 3 and the mounting hole 62 provided in the direction of the second axis B simplify the fixing structure of the rotating member 5 and improve the impact resistance against the collision. The installation and removal work time can be shortened, and the installation and removal work can be made more efficient.

  The fixing member 3 includes a first side portion 31 and a second side portion 32 in the longitudinal direction X that are disposed to face each other, and a short-side connection portion 33 that connects the first side portion 31 and the second side portion 32. The first side portion 31 is fixed to the flange portion 21, and the second side portion 32 is fixed to the web portion 22.

  According to this structure, the 1st side part 31, the 2nd side part 32, and the connection part 33 are integrated, and the impact force F (refer FIG. 3) added to a rotation member at the time of a vehicle collision can be received reliably. The impact resistance is greatly improved (see FIG. 3A). In order to further increase the strength of the temporary protection fence 1, the plate thickness of the fixing member 3 may be increased.

The rotating member 5 has a cylindrical body 50, and a lower portion of the cylindrical body 50 is disposed between the first side portion 31 and the second side portion 32 of the fixing member 3 and can be rotated by one rotating shaft. It is a configuration. In a state where the guard rail 4 and the rotating member 5 are tilted, the web portion 22 formed above the foundation frame 2 can be accommodated in the width W ₂ in the short direction. With the guard rail 4 and the rotating member 5 standing, the rotating member 5 can be fixed by the fixing member 3 with a set of bolts 60 and nuts 61. The temporary protective fence 1 can be made compact and the structure can be simplified, the installation / removal work can be made more efficient, and the installation cost can be reduced. Can be used mainly on road shoulders, pedestrian road boundaries, median strips, etc.

  When the rotating member 5 is in the lying down state, it is accommodated in the upper space 23 formed above the foundation frame 2, so that the temporary protective fence 1 can be removed without further work. As a result, the removal work can be made more efficient.

  Since the fixing member 3 includes the first side portion 31 and the second side portion 32, the fixing member 3 includes the load resistance and impact resistance in the longitudinal direction X and the connecting portion 33. Strength and impact resistance can be strengthened.

  The temporary protective fence 1 includes support plates 91 and 95 for supporting the upper base frame 2 to be stacked, so that damage due to the upper base frame 2 coming into contact with the lower guard rail 4 is prevented. For this reason, the temporary protective fence 1 can be stacked without any special work. As a result, it is possible to improve the efficiency of loading / unloading work.

  The support plates 91 and 95 are a pair of plates having a U-shaped or U-shaped planar shape that are provided with closed concave portions facing each other or are closed, and are defined by the pair of plates. Since the parts necessary for assembling the temporary protection fence 1 can be accommodated, the temporary protection fence 1 can be assembled without separately arranging the parts for assembly. As a result, the efficiency of installation work can be improved.

  FIG. 26 is a perspective view showing the fixing member 103 and the rotating member 105 in a modified form of the temporary protective fence of the present embodiment, and is an embodiment in which the fixing member 103 and the rotating member 105 have a circular cross section. Since other members are the same as those in the above embodiment, the reference numeral is the 100th in the above embodiment, and the illustration and description are incorporated. The fixing member 103 preferably conforms to the shape of the rotating member 105 and has a circular cross section, but may have a U-shaped cross section.

  Although the present embodiment has been described above, it is needless to say that various aspects of the present invention can be appropriately modified or added without departing from the spirit of the present invention. For example, in the present embodiment, a plate-like body including the first side portion 31, the second side portion 32, and the connecting portion 33 of the fixing member 3 is used. However, the size, thickness, position, shape, and structure of the embodiment are used. The present invention is not limited to this, and various configurations can be taken. Although the foundation pedestal 2 is H-shaped steel, it is not limited to this, and it may be groove-shaped steel, which is a combination of plates, and is provided with a recess that is long in the longitudinal direction X and opens upward. It may be. The cylindrical body 50 of the rotating member 5 may have other forms as long as the cross section is not only a square shape but also a round shape, an oval shape, an oval shape, or the like. All the numerical values described in the embodiments are examples.

DESCRIPTION OF SYMBOLS 1 Unfolding accommodation type temporary guard fence 2 Base frame 3, 103 Fixing member 4, Guard rail 5, 105 Turning member 7, 107 Mounting member 20 Cavity part 21 Flange part 22 Web part 23 Upper space 24 Lower space 26 Joint attachment hole 27 Web Part upper surface 31, 131 First side part 32, 132 Second side part 33, 133 Connecting part 34, 134 Notch part 44 Bolt 45 Nut 50, 150 Cylindrical body 51 Mounting hole 52 Cylindrical rotating bolt 53, 55 Guide tube 54 Nut 60 Bolt 61 Nut 62, 162 Mounting hole 70 Back portion 71 Connection portion 72 Brim portion 73 Guard rail fixing hole 74 Guard rail rotation hole 75 Recess 76 Guard rail rotation bolt 77 Guard rail rotation nut 91 First support plate 95 Second support plate A First axis B Second axis C Third axis K Aperture S ₁ First space W ₁ , W _2, W _3, W ₄ Width X Longitudinal direction Y Short direction Z Vertical direction

Claims (2)

A base frame that is long in the longitudinal direction and formed with a recess that opens upward;
A fixing member fixed to the flange portion of the foundation frame, having a U shape or a U shape in plan view, and having a width smaller than the width of the web portion;
A rotating member to which the guardrail is attached,
The lower part of the rotating member is attached to the fixing member so as to be rotatable about a first axis in a direction orthogonal to the axial direction of the rotating member in the standing state and in a direction orthogonal to the longitudinal direction of the foundation frame. The rotation member and the fixing member are provided with attachment holes along a second axis that is orthogonal to the first axis and disposed above the first axis,
When the rotating member is in a lying state, the guard rail and the rotating member can be accommodated in the width in the short direction of the web portion;
A hoisting and receiving type temporary protective fence characterized in that the rotating member can be fixed to the fixing member by attaching a tightening member to the mounting hole when the rotating member is in an upright state. The fixing member is disposed in a facing relationship , and the first side part and the second side part in the longitudinal direction of the foundation frame, and the rotating member in an upright state connecting the first side part and the second side part. A connecting portion in a direction orthogonal to the axial direction of the base frame and in a direction orthogonal to the longitudinal direction of the foundation frame , the first side portion is fixed to the flange portion, and the second side portion is fixed to the web portion. The undulating and accommodating temporary protective fence according to claim 1, characterized in that:

Images