JP2019214901A - Safety fence, sheet structure, and sheet structure attachment method - Google Patents

Abstract

To provide a safety fence to which a sheet structure can be easily attached and detached.SOLUTION: A safety fence 1 comprises a sheet structure 5 having a flexible and deformable net 3 and a plurality of attachment plates 4 arranged spaced apart in a prescribed direction in respect to the net 3. The safety fence 1 comprises a support frame 7 that supports the sheet structure 5 and extends in a prescribed direction. The safety fence 1 comprises a fastener 12 for detachably attaching the attachment member 4 to the support frame 7.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a safety fence provided with a seat structure, a seat structure used for the safety fence, and a method of mounting the seat structure.

  BACKGROUND ART Conventionally, as a safety fence installed around a mechanical device, there is known a safety fence in which a net formed in a square shape as a shielding means is fixed to U-bolts at a plurality of positions, up, down, left, and right with respect to a support (see below). Patent Document 1). At least a part of the safety fence installed around the mechanical device may be opened for maintenance of the mechanical device or the like, and an operator may enter the inside of the safety fence. In addition, if the machine equipment line is long, it is necessary to install a safety fence correspondingly long. In the above-mentioned safety fence, when the operator removes or attaches the net, it is necessary to remove or attach all the U-shaped bolts that hold the corresponding net on the support.

JP 2007-145580 A

  As described above, since the net of the safety fence is sometimes attached and detached as needed, a configuration that can easily attach and detach the net is required.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a safety fence capable of easily attaching and detaching a seat structure, a seat structure used for the safety fence, and a method of mounting the seat structure. And

  The safety fence according to claim 1 supports a seat structure having a deformable seat member, and a plurality of mounting members that are spaced apart from the seat member in a predetermined direction, and supports the seat structure. , A supporting frame extending in the predetermined direction, and a connecting member for detachably connecting the mounting member to the supporting frame.

  The safety fence according to claim 2 is the safety fence according to claim 1, wherein the seat structure is disposed on the seat member between adjacent mounting members at a distance from one or both mounting members. It has an intermediate member.

  The safety fence according to claim 3 is the safety fence according to claim 2, wherein the support frames are separated from each other in a direction intersecting a predetermined direction, and the seat structure is formed as a pair of the support frames. Having a mounting member and an intermediate member corresponding to the sheet member, and capable of bending the sheet member around a direction intersecting the predetermined direction at a position between the adjacent mounting member and the intermediate member in the predetermined direction. It is.

  The safety fence according to claim 4 is the mounting fence according to claim 2 or 3, wherein the mounting member has a large opening having a large opening diameter and a small opening having a small opening diameter connected in a predetermined direction. The connecting member is a plurality of fasteners provided on the support frame and having a head that can be inserted into the large opening of the mounting hole and is engaged with the small opening.

  A seat structure according to a fifth aspect is used for the safety fence according to any one of the first to fourth aspects.

  The mounting method of a seat structure according to claim 6, wherein a seat structure having a deformable sheet member and a plurality of mounting members spaced apart from each other in a predetermined direction with respect to the sheet member is prepared and supported. Along the extending direction of the frame, the mounting members are detachably mounted on the support frame by connecting members at intervals.

  According to the present invention, the seat structure can be easily attached to and detached from the support frame.

(A) is a front view of a part of the safety fence according to the first embodiment of the present invention, and (b) is a sectional view taken along the line II of (a). (A) is a front view of another part of the same safety fence, and (b) is a cross-sectional view taken along the line II-II of (a). It is a front view of the same safety fence. It is a side view of a safety fence same as the above. (A) is a front view which shows the attachment state to the sheet member of the attachment member in the installation method of a safety fence same as the above, and (b) is a III-III sectional view of (a). It is sectional drawing which shows attachment of the intermediate member to the sheet member in the installation method of the same safety fence. (A) is a front view which shows removal of the mounting member of the same safety fence from the support frame, (b) is a side view which shows folding of a sheet member in the same safety fence. It is a front view of the safety fence of a 2nd embodiment of the present invention. It is a front view of the safety fence of a 3rd embodiment of the present invention. It is a front view of the safety fence of a 4th embodiment of the present invention. 10A is a cross-sectional view of the same safety fence taken along the line IV-IV in FIG. 10, and FIG. It is a front view of a part of safety fence of a 5th embodiment of the present invention.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  3 and 4, reference numeral 1 denotes a safety fence. The safety fence 1 is used, for example, for a transport device surrounding the periphery of the transport device, or for protection of a construction site. The safety fence 1 includes a frame 2 and a seat structure 5 having a net 3 as a seat member and a mounting plate 4 as a mounting member. Hereinafter, the opposite side of the protected object protected by the safety fence 1, that is, the outside of the safety fence 1 is the front side (the direction of arrow F), and the inside of the safety fence 1, which is the opposite side, is the rear side (the arrow R). Direction).

  The frame 2 is a holding frame that holds the sheet structure 5. The frame 2 may be dedicated to the safety fence 1 or may be one obtained by removing a wire net or the like from the existing safety fence. The frame 2 includes a support frame 7 arranged in a pair in the first direction (the direction of the arrow X), that is, in the left-right direction in the present embodiment. Further, the frame 2 includes a connection frame 8 that connects the pair of support frames 7. Further, the frame 2 includes a reinforcing frame 9 for maintaining the angle of the support frame 7 and preventing the support frame 7 from tipping over. An opening 10 covered by the net 3 is defined by the support frame 7 and the connection frame 8. As the support frame 7, the connection frame 8, and the reinforcing frame 9, a member harder than the net 3, for example, a square member made of a metal such as aluminum is used.

  Each support frame 7 is a vertical frame installed on the installation surface FL in the present embodiment. That is, the support frames 7, 7 are separated from each other by a predetermined width in the left-right direction, which is the first direction, and in the second direction (the arrow Y direction), which is a predetermined direction crossing or orthogonal to the first direction. ), In the present embodiment, they are arranged along the vertical direction. Further, in the present embodiment, a stand body 11 as an installation part for stably installing the frame 2 on the installation surface FL is attached to each support frame 7. The stand body 11 is a leg attached to the lower end of each support frame 7. The stand body 11 is formed in an L shape when viewed from the side, and extends rearward with respect to each support frame 7. Then, the stand body 11 is fixed to the installation surface FL. Further, a fastener 12 as a connecting member for attaching and detaching the net 3 to and from the support frame 7 is attached to each of the support frames 7. The fastener 12 attaches the net 3 to the support frame 7 in a detachable manner. As the fastener 12, for example, a bolt is used. The fasteners 12 are arranged in the respective support frames 7 so as to be spaced apart from each other in a second direction intersecting the first direction, in the present embodiment, in the up-down direction. Further, the fastener 12 is arranged such that the shaft portion 12a is screwed into a screw hole at the front portion of the support frame 7 and the head portion 12b is located at the front portion of the support frame 7. Further, in the present embodiment, the fastener 12 is arranged in a slit 13 formed along the support frame 7 so that the position of the fastener 12 can be arbitrarily changed along the direction in which the support frame 7 extends. ing.

  The connection frame 8 is a horizontal frame installed parallel or substantially parallel to the installation surface FL. That is, the connection frame 8 is arranged along the left-right direction which is the first direction. The connection frame 8 connects the ends of the support frames 7, 7, in this embodiment, between the upper ends of the support frames 7, 7 and between the lower ends. For example, the net 3 may be fixed to the connection frame 8, particularly the connection frame 8 at the upper end portion by a fixing means 14. As the fixing means 14, a means for manually fixing the end of the net 3 to the connection frame 8 such as a binding band such as Insulok (registered trademark) or a wire is used. The fixing means 14 is wound around the connection frame 8 together with the net 3 to fix the net 3 to the connection frame 8. Further, the fixing means 14 may fix the net 3 to the connection frame 8 at a plurality of positions separated in the left-right direction, for example, the first direction.

  The reinforcement frame 9 is attached to a vertical frame installed on the installation surface FL. That is, in the present embodiment, the reinforcing frames 9 are respectively arranged on the support frames 7. The reinforcing frame 9 is attached to the rear of the support frame 7 at an angle with respect to the support frame 7. More specifically, the reinforcing frame 9 has, for example, an upper end fixed to the support frame 7 via a bracket, and a lower end separated rearward from the support frame 7 and fixed to the stand body 11 via a bracket.

  The net 3 protects an object to be protected. The net 3 has flexibility and can be deformed. The net 3 according to the present embodiment is used after being cut into a predetermined shape such as a square shape. As the net 3, for example, a general-purpose net such as a Trial Net (registered trademark) is used in the present embodiment, but any other deformable sheet member such as cloth or paper may be used. .

  The attachment plate 4 attaches the net 3 to the frame 2 via the fasteners 12. The mounting plate 4 is formed in a plate shape by a member such as a metal harder than the net 3. The plurality of mounting plates 4 are arranged in pairs with respect to the net 3 in the left-right direction, which is the first direction, and are spaced apart in the vertical direction, which is the second direction. That is, the attachment plate 4 of the present embodiment is attached to the left and right edges of the net 3. In this embodiment, the mounting plate 4 is formed, for example, in a square shape. Further, for example, as shown in FIGS. 1A and 1B, the mounting plate 4 of the present embodiment is constituted by a pair of bracket bodies 15a and 15b that sandwich the net 3 in the front-rear direction which is the thickness direction. The brackets 15a and 15b are fastened and fixed to each other by a fastening member 16 such as a bolt while sandwiching the side edge of the net 3 so that the bracket bodies 15a and 15b are attached to the side edge of the net 3 and from the side edge of the net 3 Some protrude outward. In the case of the mounting plate 4 of the present embodiment, the bracket body 15a protrudes outward from the side edge of the net 3, and the bracket body 15b is positioned so as to overlap the net 3. Further, a mounting hole 18 is formed in the mounting plate 4. The mounting hole 18 has a relatively large opening diameter (opening width) and a relatively small opening diameter (opening width) and a relatively small opening diameter (opening width) 12b for the head 12b of the fastener 12. Is formed in the shape of a so-called daruma hole, which is connected to the small opening 18b through which is not able to pass, in the vertical direction which is the second direction. The mounting hole 18 is formed in the mounting plate 4 at a portion protruding outward with respect to the net 3. Therefore, the mounting hole 18 is located outside the net 3. In the present embodiment, the mounting hole 18 is formed in the bracket body 15a. The mounting plate 4 may be fixed to the support frame 7 at, for example, an end of the support frame 7 as shown in FIGS. 2A and 2B. Therefore, the mounting plate 4 may have a fixing hole 19 for fixing the mounting plate 4 to the support frame 7. In the present embodiment, the hole 19 is formed at a position where the mounting hole 18 is sandwiched by the bracket body 15a in the vertical direction which is the second direction. A fixing body 20 such as a bolt is inserted into the hole 19, and the fixing body 20 is screwed into a fixing screw hole of the support frame 7 and fixed, so that the mounting plate 4 is fixed to the support frame 7. It is supposed to be.

  Further, the seat structure 5 may have an intermediate plate 21 shown in FIGS. The intermediate plate 21 keeps the shape of the net 3 and suppresses the floating of the net 3 with respect to the frame 2 and the distortion of the net 3. In the present embodiment, the intermediate plate 21 suppresses the side edge of the net 3 from rising up with respect to the support frame 7. The intermediate plate 21 is formed to be long by a member such as a metal harder than the net 3. The intermediate plate 21 is formed, for example, in a U-shaped or C-shaped cross section, and is disposed longitudinally along the edges so as to sandwich the left and right edges of the net 3. Further, the intermediate plate 21 is arranged between the mounting plate 4 forming a pair with the net 3 in the vertical direction. The intermediate plate 21 is disposed at an interval G1 with respect to at least one of the upper and lower mounting plates 4 and, in this embodiment, both. For this reason, at one end or both ends in the longitudinal direction of the intermediate plate 21, a gap G1 is formed between the intermediate plate 21 and the mounting plate 4 located in the vicinity thereof. The intermediate plate 21 may be fixed to the side edge of the net 3 by the intermediate fixing means 22, for example. As the intermediate fixing means 22, a means for fixing the intermediate plate 21 to the side edge of the net 3 by a manual operation such as a binding band or a wire is used. The intermediate fixing means 22 is wound around the intermediate plate 21 together with the net 3 to fix the intermediate plate 21 to the net 3.

  Further, the seat structure 5 may include an end plate 23 which is a shape retaining member. The end plate 23 keeps the shape of the net 3 and suppresses the net 3 from rising up or being distorted with respect to the frame 2. The end plate 23 prevents the end of the net 3 from rising up with respect to the support frame 7. The end plate 23 is formed to be long with a member such as a metal harder than the net 3. Similarly to the intermediate plate 21, the end plate 23 is formed in, for example, a U-shaped or C-shaped cross section, and is disposed longitudinally along this end so as to sandwich the end of the net 3. I have. Further, in the present embodiment, the end plate 23 is disposed longitudinally along the lower end of the net 3. The end plate 23 of the present embodiment is disposed such that both ends thereof are spaced apart from the mounting plates 4 and 4 located on the left and right sides of the lower end of the net 3 by a distance G2. The end plate 23 may be fixed to the net 3 by end fixing means 24, for example. As the end fixing means 24, a means for fixing the end plate 23 to the lower end of the net 3 by a manual operation such as a binding band or a wire is used. The end fixing means 24 is wound around the end plate 23 together with the net 3 to fix the end plate 23 to the net 3. In the present embodiment, the end fixing means 24 fixes the end plate 23 to the net 3 at a plurality of positions in the left-right direction which is the longitudinal direction of the end plate 23.

  Next, the operation of the first embodiment will be described.

  When installing the safety fence 1, first, the frame 2 is installed on the installation surface FL. This frame 2 is newly installed when it is a dedicated one for the safety fence 1, but it is not necessary to newly install it when, for example, a wire mesh or the like is removed from the existing safety fence. Absent. The frame 2 may have a fastener 12 attached to the support frame 7.

  Next, the sheet structure 5 is prepared. The sheet structure 5 forms a pair in the left-right direction, which is the first direction, with respect to the net 3 cut into a predetermined size and shape in advance according to the size and shape of the frame body 2, and in the first direction. A plurality of mounting plates 4 are arranged at positions separated in a vertical direction which is a second direction intersecting with the mounting plate 4. As shown in FIGS. 5 (a) and 5 (b), the mounting plate 4 sandwiches the net 3 back and forth between brackets 15a and 15b, and fixes the brackets 15a and 15b to each other with a fastening member 16 or the like. Then, it is attached to the net 3. In the present embodiment, the attachment plates 4 are arranged, for example, at the upper end and the lower end of the side edge of the net 3 and at equal intervals between the upper end and the lower end.

  Further, the sheet structure 5 attaches the intermediate plate 21 to at least one of the mounting plates 4 between the upper and lower directions which are the second directions of the mounting plates 4 and 4 forming a pair in the left-right direction with respect to the net 3. It is arranged so as to leave an interval G1. The intermediate plate 21 is fixed to the net 3 by intermediate fixing means 22, as shown in FIG. Further, the seat structure 5 has an end plate 23 between the mounting plates 4 and 4 forming a pair in the left and right direction at the lower end with respect to the net 3 and a gap G2 between the mounting plates 4 and 4 on the left and right. To place. The end plate 23 is also fixed to the net 3 by the end fixing means 24, similarly to the intermediate plate 21.

  Then, the mounting plate 4 of the seat structure 5 is attached to the support frame 7 of the installed frame 2. Specifically, for example, as shown in FIGS. 2A and 2B, the uppermost mounting plate 4 of the sheet structure 5 is fixed to the support frame 7 by the fixing body 20. In this state, since the upper end of the net 3 is located along the upper connection frame 8, the worker can fix the upper end of the net 3 to the connection frame 8 by, for example, the fixing means 14. Next, when the net 3 of the sheet structure 5 is hung along the front side of the frame 2, the intermediate plate 21 is located along the support frame 7, and the end plate 23 is located along the lower connection frame 8. Then, the fasteners 12 whose screws have been loosened in advance with a tool or the like are passed through the large opening 18a of the mounting hole 18 of each mounting plate 4. At this time, since the gap G1 is vacant between the mounting plate 4 and the intermediate plate 21, the net 3 can be deformed at the position of the gap G1, so that the mounting plate 4 is moved along the second direction. The fastener 12 can be easily slid upward and the fastener 12 can easily pass through the large opening 18a. Thereafter, the mounting plate 4 is slid in the mounting hole 18 of the mounting plate 4 such that the shaft portion 12a of the fastener 12 is moved from the large opening 18a to the small opening 18b. Then, the fasteners 12 are tightened by a tool or the like, and each mounting plate 4 is fastened to the support frame 7 by the fasteners 12, so that the sheet structure 5 is attached to the frame 2 with the net 3 covering the opening 10. It is held and can be used as the safety fence 1. The work of the mounting plate 4 may be performed in any order, such as fastening the mounting plate 12 to the support frame 7 sequentially from the one in which the fastener 12 is passed through the mounting hole 18.

  When the opening 10 covered by the net 3 is opened, for example, all the fasteners 12 or the fasteners 12 are positioned at a lower position in a state of being loosened by a tool or the like in an arbitrary order such as one by one. 7A, the mounting plate 4 is slid upward, and the fastener 12 is relatively moved from the small opening 18b of the mounting hole 18 to the large opening 18a. Let it. At this time, since the gap G1 is vacant between the mounting plate 4 and the intermediate plate 21, the net 3 can be deformed at the position of the gap G1, so that the mounting plate 4 is moved along the second direction. It can be easily slid upward. Then, the net 3 can be easily removed from the support frame 7 at the position of the mounting plate 4 by passing the head 12b of the fastener 12 through the large opening 18a. The mounting plate 4 is sequentially removed from the support frame 7 from the one located at the lower end to the one located at the required height. Furthermore, as shown by the imaginary line in FIG. 7B, the worker can lift the lower end side of the net 3 and roll it up at the position of each interval G1 while folding it up, so that the work can be performed in a space-saving manner. The opening 10 of the frame 2 can be opened by a required size. As described above, the safety fence 1 has a configuration in which the seat structure 5 can be easily attached to and detached from the frame 2.

  From the opened opening 10, it becomes possible for a worker to enter and exit, and to carry in and carry out materials. After the use of the opening 10, the net 3 of the wound sheet structure 5 is released, and the opening 10 is covered again with the net 3, and the fastener 12 is inserted into the large opening 18 a of the mounting hole 18 of each mounting plate 4. The sheet structure 5 can be attached and held to the frame body 2 as it is by sliding the attachment plate 4 through it and tightening the fastener 12 with a tool or the like.

  As described above, according to the first embodiment, a sheet structure 5 in which a plurality of mounting plates 4 are provided on a deformable net 3 in a vertical direction, which is a predetermined direction, is prepared. The mounting plates 4 are mounted on the support frame 7 by fasteners 12 along the extending direction of the mounting plates 4 at intervals. For this reason, the seat structure 5 can be easily attached to and detached from the frame 2 by the mounting plate 4 and the fasteners 12.

  Further, for example, a pair of upper and lower nets, each of which encloses the outer edge of a wire mesh that is basically not deformed by a steel plate, is foldably connected to each other with a coiled steel wire, and each net is positioned at a locking plate provided on the steel plate. Although there is a configuration to fasten and fix to the vertical frame and the horizontal frame with wing bolts, in this configuration, in order to form an opening when workers enter and exit and carry in materials, either upper or lower It is necessary to remove all the wing bolts that fix the net, making the formation of the opening complicated and requiring a large angle to rotate the net when forming the opening. In addition, installation is difficult when equipment is adjacent. On the other hand, in the safety fence 1 of the present embodiment, the net 3 is deformable so that the net 3 can be removed while being folded, and it is not necessary to secure a large space around the fence, and the space-saving attachment / detachment work is possible.

  Further, for example, there is a type in which a deformable net is fixed to a frame with a wire, a binding band, or the like.In this configuration, when forming an opening in the net, the wire is released or the binding band is cut. It is not easy to form the opening, and it is necessary to manage the wire and the binding band so as not to be lost. On the other hand, in the safety fence 1 of the present embodiment, since the joining and releasing of the net 3 and the support frame 7 are performed only by the tightening and loosening operation of the fasteners 12, the safety fence 1 is disassembled like a binding band or wire. There is no need to cut or cut, and parts are not easily lost.

  In particular, in the present embodiment, the mounting plates 4 are attached to the net 3 in pairs in the left-right direction, and the mounting plates 4 are attached to the support frames 7 in pairs in the left-right direction by the fasteners 12, respectively. 2 can be attached.

  Further, the seat structure 5 is formed by placing the intermediate plate 21 on the net 3 between the vertically adjacent mounting plates 4 and 4 with a gap G1 between one or both mounting plates 4. 3 can be prevented from rising or distorting with respect to the support frame 7, that is, the frame 2.

  The seat structure 5 has a mounting plate 4 and an intermediate plate 21 corresponding to the pair of support frames 7, 7, respectively, and a gap G 1 between the mounting plates 4, 4 and the intermediate plate 21 adjacent in a predetermined direction. Since the net 3 can be bent around the direction intersecting the predetermined direction at the position, the net 3 of the sheet structure 5 can be easily formed by utilizing the gap G1 between the intermediate plate 21 and the mounting plate 4. Can be folded.

  The frame 2 can be easily reinforced by a connection frame 8 connecting between the pair of support frames 7. Further, for example, by fixing the net 3 to the connection frame 8 located at the upper portion by the fixing means 14, the upper end of the net 3 can be firmly attached to the frame 2, and the upper end of the net 3 is connected. Floating or distorting from the frame 8, that is, the frame 2, can be prevented.

  The mounting hole 18 of the mounting plate 4 is a round hole having a large opening 18a having a large opening diameter and a small opening 18b having a small opening diameter connected in the vertical direction which is the second direction. By connecting the mounting plate 4 to the support frame 7 using a plurality of fasteners 12 having a head 12b that can be inserted into the opening 18a and is engaged with the small opening 18b, the mounting plate 4 can be configured with a simple configuration. The support frame 7 can be easily disengaged. Further, by using the gap G1 between the intermediate plate 21 and the mounting plate 4, even if the fastener 12 is inserted into the mounting hole 18 of another mounting plate 4, a movable area of the mounting plate 4 can be secured. The mounting plate 4 can be easily attached and detached.

  In addition, by arranging the fastener 12 in the slit 13 of the support frame 7, the position of the fastener 12 in the direction in which the support frame 7 extends can be easily adjusted.

  At the time of maintenance such as replacement of the installed safety fence 1 due to damage or deterioration of the net 3, the net 3 is removed from the frame 2 together with the mounting plate 4, the intermediate plate 21, the end plate 23, and the like. After the mounting plate 4, the intermediate plate 21, and the end plate 23 are removed from the net 3, the mounting plate 4, the intermediate plate 21, and the end plate 23 are re-attached to the new net 3, and the sheet structure is formed. 5 and the above mounting method can be repeated to easily install the same. As described above, since both the intermediate plate 21 and the mounting plate 4 can be reused, when the net 3 of the seat structure 5 is damaged, only the net 3 can be replaced.

  In each of the above embodiments, the size of the frame 2 can be arbitrarily set according to the use of the safety fence 1, the installation environment, and the like. For example, as in the second embodiment shown in FIG. 8, a frame having a large width in the left-right direction as the first direction between the support frames 7 may be used, or the third embodiment shown in FIG. Alternatively, as in the fourth embodiment shown in FIG. 10, the length of the support frame 7 in the vertical direction which is the second direction, that is, the height thereof may be large. When the height of the frame body 2 is increased as in the third and fourth embodiments, the connecting frame 8 may be used to form a crosspiece at a position closer to the upper portion to reinforce the frame.

  Further, for example, when the width and height (length) of the net 3 are insufficient due to the size of the frame body 2, a plurality of nets 3 can be added to cope freely. For example, when the height (length) of the net 3 is insufficient, as in the second and fourth embodiments, a plurality of nets 3 are arranged by partially overlapping one another up and down, and FIG. As shown in (1), these nets 3 can be connected and used by attaching means 26 such as a binding band, a wire, or a stapler needle. When the mounting plate 4 is located at these connecting portions, the bracket members 15a and 15b are jointly fastened by the fastening members 16 so as to sandwich the joints of the plurality of nets 3 as shown in FIG. By doing so, it can be easily attached to the net 3. Similarly, for example, when the width of the net 3 is insufficient, a plurality of nets 3 can be arranged by partially overlapping the left and right sides, and these nets 3 can be used by being connected by the mounting means 26 or the like. For example, the nets 3 having different sizes in the second direction may be connected to each other in the second direction as in the second embodiment, or may be connected to the second direction as in the fourth embodiment. The nets 3 having the same size in the directions may be connected to each other in the second direction. The end plate 23 may be attached to the end of each net 3. As described above, since the safety fence 1 has a simple configuration in which the safety fence 1 is attached to the support frame 7 by the attachment plate 4 and the fastener 12, the nets 3 corresponding to various widths and heights need not be prepared. In addition, it is possible to easily cope with a plurality of different widths and heights by adding about two types of nets 3.

  Furthermore, although the fastener 12 is a bolt or the like that can be tightened by a tool, for example, a butterfly bolt or a push rivet that can be manually tightened by an operator may be used.

  As a connecting member for connecting the mounting plate 4, a hook, a magnet, or the like may be used in addition to the fastener 12.

  Further, the connection member may be configured so that part or all of the connection member is detached from the support frame 7.

  Further, the first direction is the left-right direction, and the second direction is the up-down direction. However, the first direction may be the up-down direction, the second direction may be the left-right direction, and the like. For example, when the safety fence 1 is formed to be long in the left-right direction, the upper end of the net 3 can be attached to and detached from the support frame 7 extending in the left-right direction by the mounting plate 4 and the fastener 12. You may comprise so that a lower end part may hang in a free end shape.

  Further, the intermediate plate 21 is not limited to being disposed between all of the mounting plates 4 and 4 adjacent to each other in a predetermined direction. It should just be done. For example, as in the fifth embodiment shown in FIG. 12, the arrangement and non-arrangement of the intermediate plate 21 between the vertically adjacent mounting plates 4 and 4 may be alternately set in the vertical direction.

DESCRIPTION OF SYMBOLS 1 Safety fence 3 Net which is a sheet member 4 Mounting plate which is a mounting member 5 Seat structure 7 Support frame
12 Fasteners as connection members
12b head
18 Mounting hole
18a Large opening
18b small opening
21 Intermediate plate as intermediate member

Claims (6)

A sheet structure having a deformable sheet member and a plurality of mounting members spaced apart from each other in a predetermined direction with respect to the sheet member;
A support frame that supports the seat structure and extends in the predetermined direction;
A connection member for detachably connecting the mounting member to the support frame. The safety fence according to claim 1, wherein the seat structure has an intermediate member disposed between the adjacent mounting members and spaced from the one or both mounting members on the seat member. The support frames are paired apart from each other in a direction intersecting the predetermined direction,
The seat structure has a mounting member and an intermediate member corresponding to each pair of support frames, and moves the sheet member in a predetermined direction at a position between the mounting member and the intermediate member adjacent in a predetermined direction. The safety fence according to claim 2, wherein the safety fence is bendable about a crossing direction. The mounting member includes a mounting hole having a large opening having a large opening diameter and a small opening having a small opening diameter connected in a predetermined direction,
The connecting member is a plurality of fasteners provided on the support frame and having a head that can be inserted into the large opening of the mounting hole and is engaged with the small opening. Safety fence as described in 3. A seat structure used for the safety fence according to any one of claims 1 to 4. Prepare a sheet structure having a deformable sheet member and a plurality of mounting members that are arranged apart from each other in a predetermined direction with respect to the sheet member,
A mounting method of a seat structure, characterized in that the attachment members are detachably attached to the support frame by connection members along a direction in which the support frame extends, with the attachment members being spaced from each other.

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