JP5561698B2 - Wire mesh unit for preventing landslides - Google Patents

Description

  The present invention relates to a landslide prevention wire mesh, and more particularly, to a landslide prevention wire mesh unit for preventing landslide on a slope by receiving and hardening concrete.

  A landslide prevention wire mesh unit is disclosed in, for example, Japanese Patent Laid-Open No. 2005-48364 (Patent Document 1). The landslide prevention wire mesh unit disclosed in this gazette includes a first wire mesh and a second wire mesh that are arranged to face each other in a parallel relationship when in use, and a net that is positioned between both wire meshes and maintains a constant distance between both wire meshes. And a connector. The net connector has an upper horizontal bar whose both ends are rotatably connected to the first and second wire nets, and both ends are rotatably connected to the first and second metal nets at positions below the upper horizontal bar. A lower horizontal bar, and two vertical bars arranged to intersect the upper and lower horizontal bars.

  Japanese Patent Laying-Open No. 2004-3233 (Patent Document 2) discloses another form of landslide prevention wire mesh unit. The landslide prevention wire mesh unit disclosed in this gazette has a first wire mesh and a second wire mesh that are opposed to each other in the shape of a letter “C” that spreads at the time of use, and is located between both wire meshes. And a spacer for maintaining a “C” -shaped form. The spacer has an upper horizontal bar whose one end is pivotably connected to the first wire mesh and the other end is detachably connected to the second wire mesh, and is longer than the upper horizontal bar and has both ends at the first and second wire meshes. And a lower horizontal bar connected to the upper and lower horizontal bars and two vertical bars arranged to intersect the upper and lower horizontal bars.

JP 2005-48364 A JP 2004-3233 A

  Usually, when the landslide prevention wire mesh unit is transported to a construction site, the first and second wire meshes are folded so as to be closely stacked in order to reduce bulkiness. In order to enable this folding, in the metal mesh unit for preventing landslides disclosed in Japanese Patent Application Laid-Open No. 2005-48364, both ends of the upper and lower horizontal bars of the net connector are rotatably connected to the first and second metal meshes. Yes. In the folded state, the net connector is rotated to a position where it overlaps the first wire mesh, so that the first wire mesh and the second wire mesh are usually shifted in the longitudinal direction and the overall length becomes large.

  In the metal mesh unit for preventing landslides disclosed in Japanese Patent Application Laid-Open No. 2004-3233, the lengths of the upper and lower horizontal bars of the spacer are different. It cannot be folded while connected to the first and second wire meshes. Therefore, among the four connecting points of the upper and lower horizontal bars and the first and second wire nets, the other three parts are connected in a rotatable manner with one end of the upper horizontal bar being unconnected. It can be folded in the longitudinal direction. In such a landslide prevention wire mesh, it is necessary to connect one end of the upper horizontal bar which is in an unconnected state at the construction site to the wire mesh, but such a work is very complicated. . Further, in a state where one end of the upper horizontal bar is unconnected and folded, the first wire mesh and the second wire mesh are displaced in the longitudinal direction, and the overall length becomes large.

  An object of the present invention is to fold a member that maintains an opposing distance between the first and second wire meshes while the both ends of the member are connected to the first and second wire meshes, and to fold the first wire mesh and the second wire mesh in the folded state. An object of the present invention is to provide a metal net unit for preventing landslides that can reduce the positional deviation between two metal nets.

  The landslide prevention wire mesh unit according to the present invention includes a first wire mesh, a second wire mesh disposed opposite to the first wire mesh, and a base end portion rotatably connected to the first wire mesh. A first projecting frame body projecting toward the two wire nets, a second projecting frame member having a base end portion rotatably connected to the second metal mesh and projecting toward the first metal mesh, and a first projecting frame A connecting member that rotatably connects the overhang end of the body and the overhang end of the second overhang frame.

  According to the present invention having the above-described configuration, the member that maintains the opposing distance between the first wire mesh and the second wire mesh is constituted by the first overhang frame body and the second overhang frame body that are connected so as to be bendable. The wire mesh unit can be folded while the overhang frame and the wire mesh are connected, and in the folded state, the first overhang frame and the second overhang frame can be folded so as to overlap each other. It is possible to reduce the positional deviation from the two wire mesh.

  In one embodiment, the first and second overhanging frame bodies respectively include an upper horizontal bar portion and a lower horizontal bar portion that are spaced apart in the vertical direction, and overhang end portions of the upper horizontal bar portion and the lower horizontal bar portion, respectively. And a vertical bar portion that is connected and extends in the vertical direction. In this case, the connecting member rotatably connects the vertical bar portion of the first overhanging frame body and the vertical bar portion of the second overhanging frame body.

  In one embodiment, the length of the upper horizontal bar part of each overhang frame is shorter than the lower horizontal bar part. According to this embodiment, in the state of use of the landslide prevention wire mesh unit, the first wire mesh and the second wire mesh are opposed to each other in the shape of a letter “C” widening at the bottom.

  Preferably, the connecting member includes an elastic member that urges the first and second projecting frame members to rotate from the bent state toward the linearly aligned state. Furthermore, at least one of the first and second projecting frames includes a stopper portion that prohibits excessive bending beyond the linear alignment state and maintains the linear alignment state biased by the elastic member.

  In order to attach a reinforcing bar to the wire mesh unit, the overhang frame preferably includes a cross bar that vertically intersects the intermediate portion from the base end portion to the overhang end portion.

It is the figure which looked at the metal mesh unit for landslide prevention in use condition from the front side. It is the figure which looked at the 1st overhanging frame body and the 2nd overhanging frame body in a straight line alignment state from the front side. It is a perspective view which shows the 1st overhanging frame body and the 2nd overhanging frame body in a linear alignment state. It is the top view which looked at the state where the 1st overhanging frame and the 2nd overhanging frame are bending. It is a side view which shows the state which the 1st and 2nd overhang | projection frame body has overlapped in the folding state. It is the perspective view which looked at the metal mesh unit for landslide prevention in the folded state from the near upper side.

  1 to 3 show a landslide prevention wire mesh unit in a state of use, FIG. 4 shows a landslide prevention wire mesh unit in a state of bending, and FIGS. The wire net unit for preventing landslides in a folded state is shown.

  The landslide prevention wire mesh unit includes a first wire mesh 1, a second wire mesh 2 disposed opposite to the first wire mesh 1, and a base end portion rotatably connected to the first wire mesh 1. A first overhanging frame body 10 projecting toward the second wire, a second overhanging frame body 20 whose base end portion is pivotally connected to the second wire mesh 2 and projects toward the first wire mesh 1, and A connecting member 30 is provided that rotatably connects the overhanging end of the first overhanging frame 10 and the overhanging end of the second overhanging frame 20. The first wire mesh 1 and the second wire mesh 2 are typically crimp wire meshes.

  The first overhanging frame body 10 and the second overhanging frame body 20 maintain the first metal net 1 and the second metal net 2 at a predetermined interval. 1 to 3, the first overhang frame 10 and the second overhang frame 20 are in a linear alignment state, and in the folded state shown in FIGS. 5 and 6, the first overhang frame 10 and the second overhang frame 20 The overhanging frame 20 is almost superposed.

  The first overhanging frame 10 connects the upper horizontal bar portion 11 and the lower horizontal bar portion 12 that are spaced apart in the vertical direction and the overhang end portions of the upper horizontal bar portion 11 and the lower horizontal bar portion 12 in the vertical direction. And an extending vertical bar portion 13. The base end portions of the upper horizontal bar portion 11 and the lower horizontal bar portion 12 are each bent into a hook shape and connected to the first wire mesh 1 so as to be rotatable. In order to allow the reinforcing bars to be attached to the first overhanging frame body 10, a cross bar 14 is provided that intersects the intermediate portion from the base end portion of the first overhanging frame body 10 to the overhanging end portion in the vertical direction. It has been. Specifically, the crossing bar 14 is disposed so as to cross the middle part of the upper and lower horizontal bar parts 11 and 12, and is welded and fixed at the crossing part.

  Similarly, the second overhang frame 20 connects the upper horizontal bar portion 21 and the lower horizontal bar portion 22 that are spaced apart in the vertical direction, and the overhang end portions of the upper horizontal bar portion 21 and the lower horizontal bar portion 22. And a vertical bar portion 23 extending in the vertical direction. The base end portions of the upper horizontal bar portion 21 and the lower horizontal bar portion 22 are each bent into a hook shape and connected to the second wire mesh 2 so as to be rotatable. In order to allow the reinforcing bars to be attached to the second overhanging frame body 20, a cross bar 24 is provided that intersects the intermediate portion from the base end portion of the second overhanging frame body 20 to the overhanging end portion in the vertical direction. It has been. Specifically, the crossing bar 24 is arranged so as to cross the middle part of the upper and lower horizontal bar parts 21 and 22, and is fixed by welding at the crossing part.

  In the illustrated embodiment, the connecting member 30 is a torsion spring, and surrounds the vertical bar portion 13 of the first overhanging frame body 10 and the vertical bar portion 23 of the second overhanging frame body 20 so that they can be rotated. doing.

  As shown in FIG. 3, the vertical bar portion 13 of the first overhanging frame body 10 has an upper end portion 13 a and a lower end portion 13 b that protrude in a U shape in a direction intersecting with the direction in which the horizontal bars 11 and 12 extend. Is bent. Similarly, the vertical bar portion 23 of the second overhang frame 20 is bent so that the upper end portion 23a and the lower end portion 23b protrude in a U-shape in a direction intersecting with the direction in which the horizontal bars 21 and 22 extend. Yes.

  The connecting member 30 in the form of a torsion spring is attached so as to surround the upper end portions 13a and 23a of both vertical bar portions and further to surround the lower end portions 13b and 23b of both vertical bar portions. 10 and the second overhanging frame body 20 are urged to rotate from the bent state toward the linearly aligned state (in the direction indicated by arrow A in FIG. 4). In the linear alignment state shown in FIG. 3, the U-shaped bent ends 13a, 13b of the first overhanging frame body are in close contact with the U-shaped bent ends 23a, 23b of the second overhanging frame body 20, respectively. Thus, excessive bending beyond the linear alignment state is prohibited, and the linear alignment state biased by the spring 30 is maintained. Accordingly, the bent end portions 13a, 13b, 23a, and 23b function as stopper portions that maintain a linear alignment state by abutting each other.

  For example, when folding the landslide prevention wire mesh unit for transportation, the first and second overhanging frames 10 and 20 are bent in the direction indicated by the arrow B in FIG. 4 against the urging force of the spring 30. Good.

  In the illustrated embodiment, the first wire mesh 1 and the second wire mesh 2 are in the form of a “C” shape spreading in the bottom. In order to realize such a form, the length of the upper horizontal bar portion 11 of the first overhanging frame body 10 is shorter than the lower horizontal bar portion 12 and the length of the upper horizontal bar portion 21 of the second overhanging frame body 20. Is shorter than the lower horizontal bar 22. The shape of the member that keeps the facing distance between the first wire mesh 1 and the second wire mesh 2 constant is a trapezoidal shape, but is constituted by two projecting frame bodies that are connected to be able to bend the space retaining member. The holding member and the wire mesh can be folded while maintaining the connected state.

  Further, as shown in FIGS. 5 and 6, in the folded state, the first overhanging frame body 10 and the second overhanging frame body 20 are folded so as to overlap, so that the positions of the first wire net 1 and the second wire net 2 are as follows. Deviation can be reduced.

  Although one embodiment of the present invention has been described with reference to the drawings, various modifications and changes can be made within the same or equivalent scope as the present invention. Some of them are listed below as an example.

  (1) In the state of use, the first wire mesh and the second wire mesh may be opposed to each other in a parallel relationship with each other, instead of facing each other in a “C” shape. In this case, the lengths of the upper and lower horizontal bars of each overhang frame are the same. Even in such an embodiment, there is an effect that the positional deviation between the first wire mesh and the second wire mesh in the folded state can be reduced.

  (2) Each of the projecting frame members may have various forms and structures as long as the base end portion is rotatably connected to one wire mesh and projects toward the other wire mesh. For example, in the illustrated embodiment, each overhang frame includes an upper and lower horizontal bar portion and a vertical bar portion, but as another embodiment, the horizontal bar portion may be a single member.

  (3) The connecting member only needs to connect the projecting end of the first projecting frame and the projecting end of the second projecting frame so as to be rotatable. It is done. For example, a simple ring shape is also applicable.

  (4) The connecting member preferably includes an elastic member that urges the first and second projecting frame members to rotate from the bent state toward the linearly aligned state. However, as another embodiment, the connecting member includes an elastic function. It may be a connecting member that does not exhibit.

  (5) In the illustrated embodiment, the elastic member is a torsion spring, but any other embodiment may be used as long as it exhibits an elastic function.

  INDUSTRIAL APPLICABILITY The present invention can be advantageously used as a landslide prevention wire mesh unit suitable for transportation and construction work.

  DESCRIPTION OF SYMBOLS 1 1st wire mesh, 2nd 2nd wire mesh, 10 1st overhang frame, 11 upper horizontal bar part, 12 lower horizontal bar part, 13 vertical bar part, 13a, 13b U-shaped bending part, 14 crossing bar, 20 first 2 overhanging frame bodies, 21 upper horizontal bar portions, 22 lower horizontal bar portions, 23 vertical bar portions, 23a, 23b U-shaped bent portions, 24 crossing bars, 30 connecting members.

Claims (4)

The first wire mesh,
A second wire mesh disposed opposite the first wire mesh;
A first projecting frame body having a base end portion rotatably connected to the first wire mesh and projecting toward the second wire mesh;
A second projecting frame body having a base end rotatably connected to the second wire mesh and projecting toward the first wire mesh;
E Bei a connecting member for connecting the overhanging end of the flared end portion and the second overhang frame body of said first outrigger frame rotatably,
The first and second overhanging frames are respectively
An upper horizontal bar part and a lower horizontal bar part located apart in the vertical direction;
A vertical bar portion extending in the vertical direction by connecting the projecting ends of the upper horizontal bar portion and the lower horizontal bar portion,
The connecting member is a metal net unit for preventing landslides , wherein the vertical bar portion of the first overhanging frame body and the vertical bar portion of the second overhanging frame body are rotatably connected . The metal net unit for preventing landslides according to claim 1 , wherein the length of the upper horizontal bar portion of each overhang frame is shorter than that of the lower horizontal bar portion. The connecting member includes an elastic member that urges the first and second extending frame bodies to rotate from the bent state toward the linearly aligned state,
At least one of the first and second projecting frame bodies includes a stopper portion that prohibits excessive bending beyond the linearly aligned state and maintains the linearly aligned state biased by the elastic member. Item 3. A wire mesh unit for preventing landslides according to item 1 or 2 . The overhang frame body includes a cross bar that intersects an intermediate portion of the base end portion up to the flared end portion in the longitudinal direction, landslides prevention metal net unit according to any of claims 1-3.

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