JP5780816B2 - Hinge post for slope falling object protection net - Google Patents

Description

  The present invention is a hinge support for a slope falling object protection net, particularly, a slope or a slope where there is a risk of falling rocks, fallen trees or snow (hereinafter collectively referred to as “slope falling objects”). The present invention relates to a hinge post that supports a slope falling object protection net for receiving a falling object.

Conventionally, a hinge strut for a rock fall protection net is erected on a slope so that it can tilt freely, and a rope connected to the top end of the fall rock slope fall object protection net at the head of the hinge strut (hereinafter referred to as the “top end horizontal main rope”). Is connected). And when the rock fall protection net receives the rock fall, the rock fall protection net bulges and deforms (each member stretches) to absorb impact energy, so the top main rope is also stretched, There was a force acting on the protective net side (the direction of the fallen rock received).
Then, the side rope that supports the hinge post breaks, or the force applied to the hinge post itself increases and the hinge post itself is damaged. Has been proposed (see, for example, Patent Document 1).

JP 2007-113201 A (page 4-5, FIG. 3)

The hinge support | pillar disclosed by patent document 1 comprises the guide mechanism provided in the top part of the support | pillar main body, Comprising: The guide mechanism has the convex curve part, and the come-off prevention member arrange | positioned above the convex curve part. And a side wall portion facing each other with the convex curve portion and the detachment preventing member interposed therebetween.
That is, the upper end horizontal main rope is slidably supported by the convex curved portion (or both the convex curved portion and the side wall portion).
For this reason, the upper end side main part is changed by the temperature change during the day and night, the temperature change during the season, or the expansion and contraction when the falling rock is received (the upper end side main rope returns to its original length after absorbing the impact energy). Since a limited range of the rope is locally rubbed against the convex curved portion, there is a problem that the upper end side main rope is locally damaged or the convex curved portion is unevenly worn.
In addition, when trying to prevent such damage and uneven wear, there is an operation to supply the lubricant to the sliding part (grease up), and the maintenance and management of the entire structure including the rockfall protection net becomes complicated, and the maintenance cost is reduced. There was a problem of rising.

  The present invention solves such a problem and suppresses local damage of the upper end horizontal main rope and uneven wear of the upper end horizontal main rope support means without increasing maintenance costs. An object of the present invention is to provide a hinge post for a slope falling object protection net.

(1) As for the hinge support | pillar for slope fall object protection nets concerning this invention, the upper end part of the side part vertical main rope respectively installed in both sides of the slope fall object protection net is connected to the center range. It is a hinge post for a slope fallen object protection net that supports the upper end horizontal main rope movably,
The prop body,
A pair of guide side plates installed on the head of the column body;
A support roller disposed between the pair of guide side plates and having both ends rotatably supported by the pair of guide side plates;
An anti-lifting roller disposed opposite the support roller;
A column hinge plate installed on a leg of the column main body and formed with a column hinge hole,
A support rope locking means installed on the side of the column main body and capable of locking the support rope;
A part of the upper end horizontal main rope in the longitudinal direction passes through a space surrounded by the support roller, the anti-lifting roller, and the pair of guide side plates.

  (2) In the above (1), the pair of guide side plates, in plan view, gradually increase the distance between the side plate parallel portions that are substantially parallel to each other in the central range and from the side plate parallel portions toward the end portions. A side plate enlarged portion is formed.

(3) In the above (1) or (2), the supporting rollers are two and are arranged at positions corresponding to both ends of the base of the isosceles triangle in a side view,
The lifting prevention roller is one, and is arranged at a position corresponding to the apex of an isosceles triangle in a side view.

(4) In addition, the slope drop where the upper ends of the side vertical main ropes installed on both sides of the slope fallen object protection net support the upper end horizontal main rope connected to the center range in a movable manner. A hinge support for an object protection net,
The prop body,
A support roller rotatably mounted on the head of the column body;
An anti-lifting roller disposed opposite the support roller;
A column hinge plate installed on a leg of the column main body and formed with a column hinge hole,
A support rope locking means installed on the side of the column main body and capable of locking the support rope;
The support roller comprises a cylindrical or columnar support roller surface, and roller side plates installed at both ends of the roller surface,
The lifting prevention roller comprises a cylindrical or columnar lifting prevention roller surface,
A part of the upper end horizontal main rope in the longitudinal direction passes through a space surrounded by the support roller surface, the roller side plate, and the lifting prevention roller surface.

(5) Furthermore, the slope fall where the upper end of the side vertical main rope installed on both sides of the slope fallen object protection net supports the upper end horizontal main rope connected to the center range in a movable manner. A hinge support for an object protection net,
The prop body,
A support roller rotatably mounted on the head of the column body;
An anti-lifting roller disposed opposite the support roller;
A column hinge plate installed on a leg of the column main body and formed with a column hinge hole,
A support rope locking means installed on the side of the column main body and capable of locking the support rope;
The supporting roller is a drum-shaped roll having a concave surface into which the upper end side main rope can freely enter,
A part of the upper end horizontal main rope in the longitudinal direction passes through a space surrounded by the concave surface of the support roller and the outer surface of the lifting prevention roller.

  Since the hinge support for the slope fallen object protection net according to the present invention has a support roller that is rotatably installed, a limited range of the upper end side main rope is rotatably supported by the support roller. Local wear and damage of the rope and uneven wear of the support roller, which is a support means for the upper end side main rope, can be suppressed, and maintenance costs can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view for explaining a slope fall object protection net structure for explaining a slope fall object protection net hinge according to Embodiment 1 of the present invention; The side view which shows the slope fallen object protection net structure shown in FIG. The top view, front view, and bottom view explaining the hinge support | pillar for slope fall object protection nets concerning Embodiment 1 of the present invention. The side view and perspective view explaining the hinge support | pillar for slope fall object protection nets concerning Embodiment 1 of this invention. The top view, front view, and side view which show the use condition of a part (rope support means) of the hinge support | pillar for slope fall object protection nets shown in FIG. FIG. 4 is a plan view, a front view, and a side view showing a part of a hinge column for the slope fallen object protection net shown in FIG. 3 (a column base hardware). The top view, front view, and side view which show a part (anchor base metal fitting) of the hinge support | pillar for the slope fallen object protection net | network shown in FIG. The front view and side view which show the use condition of some hinge support | pillars (support | base support metal fittings) for the slope fallen object protection net | network shown in FIG. The side view explaining the hinge support | pillar for slope fall object protection nets concerning Embodiment 2 of this invention. The side view which made the cross section a part explaining the hinge support | pillar for slope fall object protection nets concerning Embodiment 3 of this invention.

[Embodiment 1]
1 to 8 illustrate a hinge support for a slope fallen object protection net according to Embodiment 1 of the present invention. FIG. 1 is a front view showing a slope fallen object protection net structure, and FIG. 3A is a side view showing a slope fallen object protection net structure, FIG. 3A is a plan view, FIG. 4B is a side view, and FIG. 4A is a side view. 5 (a), (b) and (c) are a plan view, a front view and a side view showing a part (rope support means) in use, and FIGS. 6 (a), (b) and FIG. (C) is a plan view showing a part (support base hardware), a front view and a side view, and FIGS. 7A, 7B and 7C are a plan view showing a part (anchor base hardware) and a front view. FIG. 8A and FIG. 8B are a front view and a side view showing the usage state of a part (support base hardware). . In addition, each figure is shown typically and this invention is not limited to the form shown in figure.

(Slope falling object protection net structure)
In FIG. 1 and FIG. 2, the slope fallen object protection net structure 1 includes strut bodies 10 a, 10 b that are respectively tiltably connected to anchor base hardware 20 a, 20 b with leg portions 12 a, 12 b fixed to the slope 9;
One end portions 31a and 31b are respectively connected to the heads 11a and 11b of the column bodies 10a and 10b of the hinge columns (hereinafter referred to as "hinge columns") 100a and 100b for the slope falling object protection net, and the other ends. Suspension ropes 30a, 30b connected to suspension rope fixing means 39a, 39b, respectively, where the portions 32a, 32b are fixed to the slope 9;
A pair of side ropes 40a each having one end 41a connected to the head 11a of the column main body 10a and the other end 42a connected to side rope fixing means 49a fixed to the slope 9;
A pair of side ropes 40b each having one end 41b connected to the head 11b of the column main body 10b and the other end 42b connected to side rope fixing means 49b fixed to the slope 9; ing.
That is, the hinge columns 100a and 100b are supported by the suspension ropes 30a and 30b and the pair of side ropes 40a and 40b, respectively.

Further, the slope falling object protection net structure 1 includes a protection net 60 in which side vertical main ropes 50a and 50b are respectively installed on both sides,
Both ends 71a, 71b are connected to upper end horizontal main rope fixing means 79a, 79b fixed to the slope 9, respectively, and the upper end of the protective net 60 (in the range of CD in the figure) is installed. The upper end side main ropes 70 to which the upper end parts 51a, 51b of the side vertical main ropes 50a, 50b are connected via the hanging hardware 72;
Installed on the heads 11a and 11b of the column main bodies 10a and 10b, and in a range excluding the range where the protective net 60 of the upper main rope 70 is installed (the range of AC and the range of BD in the figure) Upper end horizontal main rope support means 110a, 110b for rotating and supporting a part;
A horizontal main rope fixing that intersects the side vertical main ropes 50a and 50b and is connected to the side vertical main ropes 50a and 50b at the intersections 95a and 95b, respectively, and both end portions 91a and 91b are fixed to the slope 9 respectively. A plurality of horizontal main ropes 90 connected to the means 99a, 99b.
In the following description, the description of the suffix “a, b” is omitted for common contents.

(Protective net)
The protective net 60 includes a net surface portion 61 having a predetermined opening, and a plurality of vertical reinforcing ropes 62 and a plurality of lateral reinforcing ropes 63 that reinforce the net surface portion 61.
At this time, the upper end portion of the vertical reinforcement rope 62 is connected to the upper end horizontal main rope 70 via the hanging hardware 72, and the lower end portion is connected to the horizontal main rope 90 disposed at the lowest position. Further, both ends of the lateral reinforcing rope 63 are connected to the side vertical main rope 50, respectively. The vertical reinforcing rope 62 and the horizontal reinforcing rope 63 are connected to each other at the intersection.

  The horizontal main rope 90 has different lengths depending on the position of the protective net 60 in the height direction. For example, in the example shown in FIG. The falling rock catching part (the same as the pocket part) 2 is formed, and the lower part of the protective net 60 is along the slope 9 (partly abuts on the slope 9 or partly rises from the slope 9). A rock fall storage section 3 for storing the captured rock fall is formed.

(Hinge support)
3 to 5, the hinge column 100 includes a column main body 10 formed of, for example, H-shaped steel, a steel pipe, and the like, and an upper end horizontal main rope support means (hereinafter, referred to as a head main body 11) installed on the head 11 of the column main body 10. 110 (referred to as “rope support means”), and a support base hardware 120 installed on the leg portion 12 of the support body 10.

(Rope support means)
In FIG. 4, the rope support means 110 for supporting the upper end horizontal main rope 70 installed on the head 11 of the hinge column 100 includes a support substrate 111 installed on the head 11 of the column body 10, and a support substrate 111. A pair of guide side plates 112 disposed at an interval through which the upper end horizontal main rope 70 can pass, and a single anti-lifting roller 113 and two supports rotatably disposed between the pair of guide side plates 112. And a roller 114.
The pair of guide side plates 112 form side plate parallel portions 112p that are substantially parallel to each other in the center range in plan view, and the distance between the side plate parallel portions 112p gradually increases from the side plate parallel portions 112p toward the respective end portions. The side plate enlarged portion 112v having a C-shape that expands as the range close to the both side edges of the outer side becomes larger is formed.

The anti-lifting roller 113 and the support roller 114 are respectively a sliding pipe 113p and a sliding pipe 114p having a circular cross section, and a mounting shaft (bolt) 113s and a mounting shaft (bolt) 114s that pass through the sliding pipe 113p and the sliding pipe 114p, respectively. And an installation nut 113n and an installation nut 114n for installing the attachment shaft 113s and the attachment shaft 114s on the guide side plate 112.
A bolt hole 113h through which a mounting shaft 113s for allowing the anti-lifting roller 113 to be placed at a position corresponding to the apex of the isosceles triangle can be passed through the side plate parallel part 112p and the two support rollers 114 are respectively connected to the isosceles side. Bolt holes 114h through which the mounting shafts 114s can pass are formed to be arranged at positions corresponding to both ends of the bottom of the triangle.

Between the one anti-lifting roller 113 and the two support rollers 114 (a range corresponding to the hypotenuse of an isosceles triangle), there is an interval through which the upper end horizontal main rope 70 can pass.
Therefore, since the upper end horizontal main rope 70 is surrounded by the pair of guide side plates 112, the one lifting prevention roller 113, and the two support rollers 114, the upper end portion is affected by the impact when the protective net 60 receives the falling rock. Even when the horizontal main rope 70 dances (swings or jumps), the upper end horizontal main rope 70 does not come off the head 11 of the column main body 10.
Further, since the upper end horizontal main rope 70 is rotationally supported by the two support rollers 114, the protective net 60 is stretched by the impact force when it receives a falling rock (and then elastically restored), and day and night or seasonal temperature. The surface is not rubbed against expansion and contraction due to fluctuations (to be exact, it may slide with the guide side plate 112 or slightly with the support roller 114).

Therefore, local friction and wear can be suppressed, and the burden of maintenance work such as grease application can be reduced.
The form of the lift prevention roller 113 and the support roller 114 is not limited to this. The sliding pipe 113p and the mounting shaft 113s are integrated, and both ends of the mounting shaft 113s are provided by bearings installed on the guide side plate 112. Similarly, the sliding pipe 114p and the mounting shaft 114s may be integrated, and both ends of the mounting shaft 114s may be rotatably supported by bearings installed on the guide side plate 112.

In the present invention, the number of support rollers 114 is not limited to two, and may be one or three or more. Similarly, the number of the anti-lifting rollers 113 is not limited to one.
Further, the pair of guide side plates 112 is not limited to a shape that is symmetric in plan view, and may be asymmetric, may be substantially arc-shaped in plan view, or one or both side plates. The enlarged portion 112v may not be formed (at this time, the side edge portion of the guide side plate 112 is preferably chamfered in an arc shape).
Further, instead of the rotatable lifting prevention roller 113, a non-rotatable cylindrical body or a substantially arc-shaped member may be used. At this time, the upper end horizontal main rope 70 is always rotated and supported by the support roller 114 and only comes into contact with the anti-lifting roller 113 only when the protective net 60 receives a falling rock. Local wear of the upper end horizontal main rope 70 is prevented.
5 (c) shows an example in which the upper end 51 of the side vertical main rope 50 is directly connected to the upper end horizontal main rope 70. As shown in FIG. You may make it connect via.

(Staff base hardware)
The column base hardware 120 includes a column hinge board 121 installed on the leg 12 of the column body 10, a pair of column hinge plates 122 installed on the column hinge board 121, and column hinge holes formed in the column hinge plate 122. 122h.

(Anchor base hardware)
The anchor base hardware 20 includes an anchor hinge shaft 26 that can pass through the column hinge hole 122h, an anchor hinge plate 25 in which an anchor hinge hole 25h through which the anchor hinge shaft 26 passes, and the anchor hinge plate 25 are fixed. An anchor base 24 formed with an anchor base hole 24h through which the fixed anchor 29 passes. The anchor base 24 is fixed to the inclined surface 9, and the base fixed anchor 29 passing through the anchor base hole 24h causes the inclined base 9 to is set up.
The anchor hinge shaft 26 is installed so as to be substantially parallel to the surface of the protective net 60 (substantially perpendicular to the inclined surface 9 with respect to the direction of the maximum inclination line). That is, the support hinge plate 122 and the anchor hinge plate 25 are freely tiltable in a vertical surface (substantially the same surface as the surface including the maximum inclination line). When stretched or loosened, it tilts away from the vertical plane).

(Hinged column support member)
In FIG. 4, a suspension hinge plate 13 is installed on the surface of the head 11 of the column body 10 on the upstream side of the inclined surface 9, and the hinge bolt 33 penetrating the suspension hinge hole 13 h formed in the suspension hinge plate 13 is used. The end portion 32 of the suspension rope 30 is connected to the column main body 10.
Further, the side hinge plate 14 is installed on the left and right surfaces of the head 11 of the column main body 10, and the end of the side rope 40 is secured by a hinge bolt 43 penetrating the side hinge hole 14 h formed in the side hinge plate 14. The part 42 is connected to the column body 10.

  The suspension rope fixing means 39, the side rope fixing means 49, the upper end side main rope fixing means 79, and the horizontal main rope fixing means 99 are structured according to the anchor base hardware 20, and are anchor hinges in the anchor base hardware 20. Since the shaft 26 corresponds to a hinge bolt, a description thereof will be omitted.

(Function)
In FIG. 1, the column main body 10 is supported by the two members of the suspension rope 30 and the side rope 40 as described above, and the upper end portion of the side vertical main rope 50 installed on both side edges of the protective net 60. Reference numeral 51 denotes an upper end horizontal main rope 70. For this reason, when the protective net 60 receives the falling rock, the protective net 60 bulges away from the slope 9 and the side vertical main rope 50 and the upper end horizontal main rope 70 are both extended.
At this time, since both side edges of the protective net 60 are close to each other in front view (moving in a direction away from the column main body 10 respectively), any of the protective net 60, the side vertical main rope 50, and the upper end horizontal main rope 70 is selected. In addition, the deformation performance is improved, and the effect of smooth energy absorption by each deformation with respect to the energy at the time of rockfall collision is obtained.

As described above, the upper end horizontal main rope 70 is rotationally supported by the rope support means 110, and the upper end 51 of the side vertical main rope 50 is not connected to the column main body 10. As a result, the side rope 40, or the support base hardware 120 and the support base hardware 120 are prevented from being damaged, and the effect of improving the reliability of the support overturning is obtained.
In the above description, the upper end 51 of the side vertical main rope 50 is connected to the upper end horizontal main rope 70, but the present invention is not limited to this, and the upper end 51 of the side vertical main rope 50 is not limited thereto. May be connected to the column main body 10. At this time, although the force to fall the column main body 10 acts on the column main body 10 at the time of falling rock collision, the upper end horizontal main rope 70 is rotatably supported by the rope support means 110. Local friction and wear of the support roller 114 can be suppressed, and the burden of maintenance work such as grease application can be reduced.

[Embodiment 2]
FIG. 9 is a side view for explaining a hinge support for a slope fallen object protection net according to Embodiment 2 of the present invention. FIG. 9 schematically shows the present invention, and the present invention is not limited to the illustrated form.
In FIG. 9, a hinge support (hereinafter referred to as “hinge support”) 200 for a sloping fall object protection net is formed by replacing the rope support means 110 installed on the hinge support 100 described in the first embodiment with an upper end horizontal main part. The rope support means (hereinafter referred to as “rope support means”) 210 is replaced. And since the member except the rope support means 210 is the same as the hinge support | pillar 100, description is abbreviate | omitted.

(Rope support means)
In FIG. 9, the rope support means 210 has a guide flange having a function of guiding the upper end lateral main rope 70 to the support roller 114 (more precisely, the sliding pipe 114p) in the rope support means 110 described in the first embodiment. This corresponds to a structure in which the pair of guide side plates 112 are removed.
That is, the rope support means 210 includes a support substrate 211 installed on the head 11 of the column main body 10, a pair of support side plates 212 installed on the support substrate 211 with a predetermined interval, and a pair of support The side plate 212 includes a lift prevention roller 213 and a support roller 214 that are rotatably installed on the side plate 212.

The lifting prevention roller 213 includes a sliding pipe 213p having a circular cross section, an attachment shaft (bolt) 213s that passes through the sliding pipe 113p, and an installation nut 213n that installs the attachment shaft 213s on the support side plate 212. ing.
The support roller 214 includes a sliding pipe 214p having a circular cross section, a mounting shaft (bolt) 214s that passes through the sliding pipe 214p in a rotatable manner, and an installation nut 214n that installs the mounting shaft 214s on the support side plate 212. .
At this time, a pair of disc-shaped pipe flanges 214f are installed on the sliding pipe 214p of the support roller 214 with a space allowing the upper end horizontal main rope 70 to be accommodated. A range close to the outer periphery of the sliding pipe 213 p of the lifting prevention roller 213 enters a range sandwiched by the pipe flange 214 f of the support roller 214.

The upper end horizontal main rope 70 can be surrounded by a pair of pipe flanges 214f, a sliding pipe 213p of the lifting prevention roller 213, and a sliding pipe 214p of the support roller 214. For this reason, even when the upper end horizontal main rope 70 dances (shakes or jumps) due to an impact when the protective net 60 receives a falling rock, the upper end horizontal main rope 70 comes off the head 11 of the column main body 10. There is nothing.
Further, since the upper end horizontal main rope 70 is supported by the support roller 214 and is guided by the pipe flange 214f that rotates in the same manner as the support roller 214, the degree to which the surface is rubbed is reduced, and the local friction is reduced. And wear is further suppressed.

[Embodiment 3]
FIG. 10 is a side view, partly in section, illustrating a hinge column for a slope fallen object protection net according to Embodiment 3 of the present invention. Note that FIG. 10 is schematically shown, and the present invention is not limited to the illustrated form.
In FIG. 10, a sloped object protection net hinge post (hereinafter referred to as a “hinge post”) 300 is formed by replacing the rope support means 210 installed on the hinge post 200 described in the second embodiment with an upper end horizontal main part. The rope support means (hereinafter referred to as “rope support means”) 310 is replaced. And since the member except the rope support means 310 is the same as the hinge support | pillar 200, description is abbreviate | omitted.

(Rope support means)
In FIG. 10, the rope support means 310 has an integral structure of the lifting prevention roller 213 and the support roller 214 in the rope support means 210 described in the second embodiment, and the upper end horizontal main rope 70 can enter the support roller 214. This corresponds to a drum-shaped roll having a concave surface (caliber).
That is, the rope support means 310 includes a support substrate 311 installed on the head 11 of the column main body 10, a pair of support side plates 312 installed on the support substrate 311 at a predetermined interval, and a pair of support plates. A lift prevention roller 313 and a support roller 314 that are rotatably installed on the side plate 312 are provided.

The lift prevention roller 313 is a solid roller or a hollow roller formed from a roller portion 313p having a roller outer surface with a circular cross section and a roller shaft 313s provided integrally with the roller portion 313p. Both ends of 313 s are rotatably supported by bearings 315 installed on the support side plate 312.
The support roller 314 includes a caliber roll portion 314p formed with a concave surface (caliber) into which the upper end side main rope 70 can enter, and a roller shaft 313s provided integrally with the caliber roll portion 314p. It is a roll, and both ends of the roller shaft 313 s are rotatably supported by bearings 316 installed on the support side plate 312.

The upper end horizontal main rope 70 can be surrounded by the caliber roll portion 314p (concave surface) of the support roller 314 and the roller surface (cylindrical surface) of the lifting prevention roller 313.
For this reason, even when the upper end horizontal main rope 70 dances (shakes or jumps) due to an impact when the protective net 60 receives a falling rock, the upper end horizontal main rope 70 comes off the head 11 of the column main body 10. There is nothing.
Further, the upper end horizontal main rope 70 is guided by the concave surface of the rotating caliber roll portion 314p even if the contact position with the support roller 314 or the sliding direction changes, so that the degree to which the surface is rubbed is further reduced. In addition, local friction and wear are further suppressed.

  Since the present invention has the above-described configuration, it can be widely used not only as a fall prevention means for receiving various objects falling on various slopes, but also for receiving rocks falling on slopes.

DESCRIPTION OF SYMBOLS 1 Slope fall object protection net structure 2 Fallen rock capture part 3 Fallen stone storage part 9 Slope 10 Prop body 11 Head 12 Leg 13 Suspension hinge board 13h Suspension hinge hole 14 Side hinge board 14h Side hinge hole 20 Anchor base hardware 24 Anchor base 24h Anchor base hole 25 Anchor hinge plate 25h Anchor hinge hole 26 Anchor hinge shaft 29 Base fixing anchor 30 Hanging rope 31 End portion 32 End portion 33 Hinge bolt 39 Hanging rope fixing means 40 Side rope 41 End portion 42 End portion 43 Hinge bolt 49 Side rope fixing means 50 Side vertical main rope 51 Upper end portion 60 Protective net 61 Net surface portion 62 Vertical reinforcement rope 63 Horizontal reinforcement rope 70 Upper end horizontal main rope 71 End portion 72 Hanging hardware 79 Upper end horizontal main rope fixing means 90 Horizontal main Ropes 1 End portion 95 Crossing portion 99 Horizontal main rope fixing means 100 Hinge column 110 Rope support means 111 Support substrate 112 Guide side plate 112p Side plate parallel portion 112v Side plate enlargement portion 113 Lifting prevention roller 113h Bolt hole 113n Installation nut 113p Sliding pipe 113s Installation shaft 114 Support roller 114h Bolt hole 114n Installation nut 114p Sliding pipe 114s Mounting shaft 120 Column base hardware 121 Column hinge board 122 Column hinge plate 122h Column hinge hole 200 Hinge column (Embodiment 2)
210 Rope support means 211 Support substrate 212 Support side plate 213 Lifting prevention roller 213n Installation nut 213p Sliding pipe 213s Mounting shaft 214 Support roller 214f Pipe flange 214n Installation nut 214p Sliding pipe 214s Mounting shaft 300 Hinge column (Embodiment 3)
310 Rope support means 311 Support substrate 312 Support side plate 313 Lift prevention roller 313p Roller portion 313s Roller shaft 314 Support roller 314p Caliber roll portion 315 Bearing 316 Bearing

Claims (5)

For sloping fall object protection nets, the upper ends of the side vertical main ropes installed on both sides of the slope fall object protection net support the upper end horizontal main rope connected to the center range in a movable manner. A hinge post,
The prop body,
A pair of guide side plates installed on the head of the column body;
A support roller disposed between the pair of guide side plates and having both ends rotatably supported by the pair of guide side plates;
An anti-lifting roller disposed opposite the support roller;
A column hinge plate installed on a leg of the column main body and formed with a column hinge hole,
A support rope locking means installed on the side of the column main body and capable of locking the support rope;
A hinge for a slope fallen object protection net characterized in that a part of the upper end lateral main rope in the longitudinal direction passes through a space surrounded by the support roller, the anti-lifting roller, and the pair of guide side plates. Prop.   By the pair of guide side plates, in plan view, side plate parallel portions that are substantially parallel to each other in the central range and side plate enlarged portions that gradually increase from the side plate parallel portions toward the end portions are formed. The hinge post for a slope fallen object protection net according to claim 1. The support rollers are two, and are arranged at positions corresponding to both ends of the base of the isosceles triangle in a side view,
3. The hinge column for a sloping fall object protection net according to claim 1 or 2, wherein the lift prevention roller is provided at a position corresponding to a vertex of an isosceles triangle in a side view. For sloping fall object protection nets, the upper ends of the side vertical main ropes installed on both sides of the slope fall object protection net support the upper end horizontal main rope connected to the center range in a movable manner. A hinge post,
The prop body,
A support roller rotatably mounted on the head of the column body;
An anti-lifting roller disposed opposite the support roller;
A column hinge plate installed on a leg of the column main body and formed with a column hinge hole,
A support rope locking means installed on the side of the column main body and capable of locking the support rope;
The support roller comprises a cylindrical or columnar support roller surface, and roller side plates installed at both ends of the roller surface,
The lifting prevention roller comprises a cylindrical or columnar lifting prevention roller surface,
A hinge strut for a sloping fall object protection net, wherein a part of the upper end horizontal main rope passes through a space surrounded by the support roller surface, the roller side plate and the lifting prevention roller surface. . For sloping fall object protection nets, the upper ends of the side vertical main ropes installed on both sides of the slope fall object protection net support the upper end horizontal main rope connected to the center range in a movable manner. A hinge post,
The prop body,
A support roller rotatably mounted on the head of the column body;
An anti-lifting roller disposed opposite the support roller;
A column hinge plate installed on a leg of the column main body and formed with a column hinge hole,
A support rope locking means installed on the side of the column main body and capable of locking the support rope;
The supporting roller is a drum-shaped roll having a concave surface into which the upper end side main rope can freely enter,
A hinge column for a sloping fall object protection net, wherein a part of the upper end horizontal main rope passes through a space surrounded by a concave surface of the support roller and an outer surface of the lifting prevention roller.

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