Railroad vehicle fall prevention fence posts and railroad vehicle fall prevention fences

Abstract

To provide a rail-road vehicle fall prevention fence support post and rail-road vehicle fall prevention fence which can be freely attached and detached to the loading platform tailgate of a rail-road vehicle and which has improved workability in attachment and removal. [Solution] The support post 1 for a rail-road vehicle fall prevention fence is a support post used in a rail-road vehicle fall prevention fence that can be attached and detached freely to the loading platform gate of a rail-road vehicle, and is characterized by comprising a pillar-shaped base (base body 111), a vice pliers 12 fixed to the underside of the pillar-shaped base and switchable between a first state in which the opening angle of the downward-facing tip 122 is variable, and a second state in which the opening angle is fixed, and a clamping part 13 that clamps the loading platform gate of the rail-road vehicle between one member 131 fixed to the tip 122 of the vice pliers 12 and the other member 132 fixed to the pillar-shaped base.

Description

[Technical Field]

[0001] The present invention relates to a rail-road vehicle fall prevention fence support post and a rail-road vehicle fall prevention fence that are detachably attached to the loading platform of a rail-road vehicle to prevent falls from the vehicle. [Background technology]

[0002] When road-rail vehicles are used for travel and loading / unloading work in railway construction, etc., measures must be taken to prevent people and materials loaded on the vehicle's loading platform from falling.Currently, methods of preventing people and materials from falling from road-rail vehicles include installing fall prevention equipment on the loading platform and bolting single-tube pipes to the loading platform's tailgate.

[0003] Patent Document 1 discloses a support post for a fall prevention fence that is detachably fixed via a fixing member to the outside of the tailgate of a truck bed. However, in the support post disclosed in Patent Document 1, the fixing member and the tailgate are detachably screwed together via a hook bolt and a wing nut (paragraphs 0021 to 0023), and the fixing member and the post are detachably fixed via a clamp (paragraphs 0024 to 0026). Here, considering the work of installing and removing a fall prevention fence each time it is delivered to or removed from a site, this method of bolting requires time for the bolts to be fixed when installing and removing the fall prevention fence. As a result, there is a problem in that it is not possible to improve the ease of installation and removal of a road-rail vehicle fall prevention fence that is detachably attached to the tailgate of the truck bed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-117246 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention was devised in consideration of the above-mentioned problems, and its purpose is to provide a support for a rail-road vehicle fall prevention fence and a rail-road vehicle fall prevention fence that can be attached and detached freely to the loading platform tailgate of a rail-road vehicle, and that improves the ease of installation and removal. [Means for solving the problem]

[0006] The support post for a rail-road vehicle fall prevention fence in the first invention is a support post for a rail-road vehicle fall prevention fence that is used for a rail-road vehicle fall prevention fence that can be attached and detached to the loading platform gate of a rail-road vehicle, and is characterized by comprising a pillar-shaped base, vise pliers fixed to the below of the pillar-shaped base and switchable between a first state in which the opening angle of the downward-facing tip is variable and a second state in which the opening angle is fixed, and a clamping part that clamps the loading platform gate of the rail-road vehicle between one member fixed to the tip of the vise pliers and another member fixed to the pillar-shaped base.

[0007] The support post for a rail-road vehicle fall prevention fence in the second invention is characterized in that the post-shaped base is a hollow body having one insertion hole for inserting a cross bar and another insertion hole spaced apart from the first insertion hole drilled in the side plate and communicating internally.

[0008] The support post for the rail-road vehicle fall prevention fence in the third invention is characterized in that the clamping portion has a tip of the other member extending approximately perpendicularly to the extension direction of the pillar-shaped base in a direction approaching the one member.

[0009] The rail-road vehicle fall prevention fence of the fourth invention is characterized by comprising a plurality of rail-road vehicle fall prevention fence posts described in the first invention, and one or more cross bars erected on a plurality of the rail-road vehicle fall prevention fence posts.

[0010] The rail-road vehicle fall prevention fence in the fifth invention is characterized in that the cross bar comprises a cross bar base, a movable end portion that is loosely fitted into one end of the cross bar base so as to be movable in the extension direction of the cross bar base and is fitted into one of the rail-road vehicle fall prevention fence posts, and a fixed end portion that is fixed to the other end of the cross bar base and is fitted into another of the rail-road vehicle fall prevention fence posts. [Effects of the Invention]

[0011] According to the first to fifth inventions, the road-rail vehicle fall prevention fence post and road-rail vehicle fall prevention fence include: a pair of vise pliers fixed to the bottom of a pillar-shaped base and switchable between a first state in which the downward-facing tip has a variable opening angle and a second state in which the opening angle is fixed; and a clamping portion that clamps the bed gate of a road-rail vehicle between one member fixed to the tip of the vise pliers and another member fixed to the pillar-shaped base. This allows the pillar-shaped base to be directly fixed to the bed gate without using a separate bolt or other fixing member, eliminating the need for bolt fixing work time and tools. Furthermore, because no bolt holes are required, the road-rail vehicle fall prevention fence post can be freely positioned. This improves the ease of installation and removal of road-rail vehicle fall prevention fences that can be detachably attached to the bed gate of a road-rail vehicle.

[0012] In particular, according to the second invention, the column-shaped base is a hollow body with two insertion holes, one separated from the other, drilled in the side panel and connected internally. This allows for the attachment of a crossbar to the insertion hole, as well as the attachment of a ring-shaped metal fitting, such as a carabiner, used at the end of a chain. This eliminates the need to use different posts for the middle and end sections of the road-rail vehicle fall prevention fence. Even when installing fences with the same structure, the positions of the crossbar and chain can be freely determined. This further improves the ease of installation and removal of road-rail vehicle fall prevention fences that can be detachably attached to the loading platform of road-rail vehicles. Furthermore, because the middle and end sections of the road-rail vehicle fall prevention fence posts have the same structure, inventory can be standardized. This improves the manageability of road-rail vehicle fall prevention fences that can be detachably attached to the loading platform of road-rail vehicles.

[0013] In particular, according to the third aspect of the present invention, the tip of the other member extends at a substantially right angle to the extension direction of the column-shaped base, in a direction approaching the one member. Therefore, in cases where the loading platform tailgate is comprised of a lower side panel and an expanded upper flange, the other member contacts the upper flange at parts other than the tip and the lower side panel at the tip. This effectively withstands loads directed from the inside space of the loading platform toward the outside space, making it difficult for the rail-road vehicle fall prevention fence support to come off the loading platform tailgate. This improves the safety of road-rail vehicle fall prevention fences that can be detachably attached to the loading platform tailgate of road-rail vehicles.

[0014] In particular, according to the fifth aspect of the invention, the crossbar has a movable end that is loosely fitted to one end so that it can move in the extension direction of the crossbar base, and a fixed end that is fixed to the other end.As a result, the attachment position of the road-rail vehicle fall prevention fence post to the loading platform tailgate is not restricted by the length of the crossbar, and it can be easily positioned.This further improves the ease of installation and removal of the road-rail vehicle fall prevention fence, which can be attached and removed freely to the loading platform tailgate of a road-rail vehicle. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic side view showing an example of a road-rail vehicle fall prevention fence in this embodiment. [Figure 2] FIG. 2 is a schematic plan view corresponding to FIG. [Figure 3] FIG. 3 is a schematic front view showing an example of a support post for a road-rail vehicle fall prevention fence in this embodiment. [Figure 4] FIG. 4 is a schematic right side view showing an example of an insertion hole drilled in the upper part of the support post for the road-rail vehicle fall prevention fence in this embodiment. [Figure 5] FIG. 5 is a schematic cross-sectional view corresponding to the cross section AA in FIG. [Figure 6] FIG. 6 is a schematic right side view corresponding to FIG. [Figure 7] FIG. 7 is a schematic partial enlarged view of the clamping portion shown in FIG. [Figure 8]FIG. 8 is a schematic plan view showing an example of a horizontal rail used in the road-rail vehicle fall prevention fence in this embodiment. [Figure 9] FIG. 9 is a schematic front view corresponding to FIG. [Figure 10] FIG. 10 is a schematic plan view showing an example of a road-rail vehicle fall prevention fence in this embodiment. [Figure 11] FIG. 11 is a schematic diagram showing an example of a method for attaching a road-rail vehicle fall prevention fence to a loading platform gate in this embodiment. [Figure 12] FIG. 12 is a schematic diagram showing an example of a method for attaching a road-rail vehicle fall prevention fence to a loading platform gate in this embodiment. [Figure 13] FIG. 13 is a schematic diagram showing an example of a method for attaching a road-rail vehicle fall prevention fence to a loading platform gate in this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, with reference to the drawings, an example of a road-rail vehicle fall prevention fence post 1 and a road-rail vehicle fall prevention fence 100 as an embodiment of the present invention will be described in detail. In each drawing, one horizontal direction is referred to as a first horizontal direction X, one horizontal direction perpendicular to the first horizontal direction X is referred to as a second horizontal direction Y, and a direction perpendicular to each of the first horizontal direction X and the second horizontal direction Y is referred to as a height direction Z. The configurations in each drawing are shown schematically for the purpose of explanation, and for example, the size of each component and the size comparison of each component may differ from those shown in the drawings.

[0017] (Land rail vehicle fall prevention fence support post 1) An example of a road-rail vehicle fall prevention fence post 1 in this embodiment will be described with reference to the drawings. In the following description, the term "fence post 1" will also refer to the road-rail vehicle fall prevention fence post 1.

[0018] The fence post 1 is used in a road-rail vehicle fall prevention fence 100 that is detachably attached to the loading platform tailgate of a road-rail vehicle V, as shown in Figures 1 and 2, for example. The loading platform tailgate to which the road-rail vehicle fall prevention fence 100 is attached is, for example, at least one of the side tailgate V1 and the rear tailgate V2. By attaching the road-rail vehicle fall prevention fence 100 to the loading platform tailgate, it is possible to prevent cargo and the like loaded in the inner space In of the loading platform from falling into the outer space O. Furthermore, as shown in Figure 3, for example, the fence post 1 has one or more cross bars 2, the longitudinal direction of which is oriented in a first horizontal direction X, attached to at least one of the left side S1 and right side S2, with the side surface facing the inner space In as the front.

[0019] The road-rail vehicle fall prevention fence 100 comprises, for example, a plurality of fence posts 1 and one or more cross bars 2 mounted on the plurality of fence posts 1. The road-rail vehicle fall prevention fence 100 may further comprise, for example, one or more chains 3 mounted on the plurality of fence posts 1. For example, a cross bar 2 is attached to the fence post 1 in the middle section, and a freely openable chain 3 is attached to the fence posts 1 at the end sections for carrying loads into or out of the inner space In. The road-rail vehicle fall prevention fence 100 has a load-bearing capacity of approximately 100 kg / m against horizontal forces directed from the inner space In towards the outer space O.

[0020] As shown in Figure 3, the fence post 1 comprises a post-shaped base 11, vise pliers 12, and clamping part 13. In this case, the post-shaped base 11 can be fixed directly to the bed gate without using a separate bolt or other fixing member, eliminating the need for work such as bolt fixing and tools. Furthermore, since there is no need to drill bolt holes, the road-rail vehicle fall prevention fence post 1 can be freely positioned. This improves the ease of installation and removal of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the bed gate of a road-rail vehicle V.

[0021] Each component of the fence post 1 is made of steel material such as SUS. The dimensions of the fence post 1 are, for example, a height of approximately 978 mm, a width in the first horizontal direction X of approximately 60 mm, and a depth in the second horizontal direction Y of approximately 40 mm. The thickness of the bed gate to which the fence post 1 is attached is, for example, approximately 40 mm.

[0022] <Column base 11> The columnar base 11 is a component that corresponds to the base of the fence post 1. The columnar base 11 may be shaped, for example, as a polygonal column or a cylinder. As shown in Figures 3 to 7, the columnar base 11 has a base body 111, an insertion hole 112, a hook portion 113, an opening / closing portion 114, and a lower tip 115.

[0023] The base body 111 is a portion corresponding to the main body of the columnar base 11. The base body 111 may have, for example, a polygonal pillar shape or a cylindrical shape. The base body 111 has, for example, a hollow space at least in the lower part, and the vise pliers 12 are fixed in the hollow space.

[0024] The insertion hole 112 is a portion into which the horizontal bar 2 is fitted. One or more insertion holes 112 are drilled, for example, in the side surface of the base body 111. For example, as shown in FIG. 3, one or more insertion holes 112 are drilled in at least one of the side surface of the left side S1 and the side surface of the right side S2. For example, as shown in FIG. 4, the insertion holes 112 have an upper first hole 112a and a lower second hole 112b. The first hole 112a and the second hole 112b have openings that are open in the first horizontal direction X and are continuous with each other. The opening of the second hole 112b is partially closed by, for example, a narrow portion 112c that is continuous with the surface of the base body 111, and the width along the second horizontal direction Y is narrower than the width of the opening of the first hole 112a. Therefore, for example, when the shape of the end of the cross bar 2 is roughly T-shaped in a plan view, consisting of a first portion extending in the first horizontal direction X and having a width approximately the same as the width of the opening of the second hole 112b, and a flange-shaped second portion continuing from the end tip of the first portion (see Figure 8), the second portion of the end of the cross bar 2 can be inserted into the first hole 112a and then lowered into the position of the second hole 112b, thereby hooking the end of the cross bar 2 onto the narrow portion 112c.

[0025] As shown in FIG. 5 , for example, at least a portion of the insertion hole 112 is formed in a hollow rectangular prism whose outer periphery is the first side plate 111a on the left side S1, the second side plate 111b on the right side S2, the third side plate 111c on the inner space In side, and the fourth side plate 111d on the outer space O side. The first hole 112a, the second hole 112b, and the narrow portion 112c are formed in the first side plate 111a and the second side plate 111b. The insertion hole 112 may include a third hole 112d formed in the third side plate 111c or the fourth side plate 111d near a corner of the third side plate 111c or the fourth side plate 111d that faces the first side plate 111a or the second side plate 111b. The third hole 112d communicates with the first hole 112a and the second hole 112b within the hollow interior of the base body 111.

[0026] That is, the column-shaped base 11 may be a hollow body with one insertion hole (first hole 112a) and another insertion hole (third hole 112d) spaced apart from each other and connected internally. In this case, the crosspiece 2 can be attached to the first hole 112a, and a ring-shaped metal fitting 3a, such as a carabiner, used at the end of the chain 3 can be attached so that it passes through the first hole 112a and the third hole 112d, as shown in FIG. 5 . This eliminates the need to use different posts 1 for the road-rail vehicle fall prevention fence 100 in the middle and end sections. Even if the same structure is installed, the positions of the crosspiece 2 and the chain 3 can be freely determined. This further improves the ease of installation and removal of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the loading platform gate of a road-rail vehicle V. Furthermore, because the posts 1 for the middle and end sections have the same structure, inventory can be standardized. This allows for improved manageability of the road-rail vehicle fall prevention fence 100, which can be attached and detached freely to the loading platform gate of the road-rail vehicle V.

[0027] The third hole 112d may be drilled in a corner of the third side plate 111c if the ring-shaped metal fitting 3a of the chain 3 is to be attached to the inner space In, or in a corner of the fourth side plate 111d if the ring-shaped metal fitting 3a of the chain 3 is to be attached to the outer space O. The third hole 112d may be drilled in a corner of the third side plate 111c or the fourth side plate 111d closer to the first side plate 111a if the ring-shaped metal fitting 3a of the chain 3 is to be attached to the left side S1, or in a corner of the third side plate 111c or the fourth side plate 111d closer to the second side plate 111b if the ring-shaped metal fitting 3a is to be attached to the right side S2.

[0028] The hooking portion 113 is a portion for fixing the cross rail 2 to the side surface of the base main body 111. The hooking portion 113 is provided, for example, on the side surface of the base main body 111. As shown in FIG. 4, for example, one or more hooking portions 113 may be provided on the side surface facing the inner space In, or may be provided on the side surface facing the outer space O. The shape of the hooking portion 113 is, for example, a protrusion shape. The method of fixing the cross rail 2 to the hooking portion 113 will be described later.

[0029] The opening / closing part 114 is a part that opens and closes when operating the vise pliers 12 fixed inside the base body 111. The opening / closing part 114 has, for example, a substantially flat plate shape that covers the hollow space below the base body 111, and one end is pivotally supported on the base body 111 so as to be freely rotatable. The other end of the opening / closing part 114 opposite the pivotally supported end is, for example, detachably fixed to the base body 111 by a one-touch metal fitting (not shown).

[0030] The lower tip 115 is a portion for fixing at least a part of the clamping unit 13. The lower tip 115 may be, for example, a part of the clamping unit 13 fixed as a separate body, or the lower tip 115 itself may have the function of the clamping unit 13, for example, by contacting the bed gate.

[0031] <Vice Pliers 12> The vise pliers 12 are components for adjusting the opening angle of the clamping portion 13. The vise pliers 12 have a movable portion 121, a tip 122, and a fixed portion 123, as shown in, for example, FIGS.

[0032] The vise pliers 12 are fixed below the columnar base 11 and can be switched between a first state in which the opening angle of the downward-facing tip 122 is variable, and a second state in which the opening angle is fixed.

[0033] Movable part 121 is a part that is manually operated to adjust the opening angle of tip 122 of vise pliers 12. Movable part 121 is freely swingable relative to fixed part 123 in the first state, and is fixed without swinging relative to fixed part 123 in the second state.

[0034] Tip 122 is a part for adjusting the opening angle of clamping unit 13. Tip 122 is integrated with or fixed to movable unit 121 so as to move in conjunction with it, and at least a portion of clamping unit 13 is integrated with or fixed to it. Tip 122 swings in conjunction with the swing of movable unit 121, thereby swinging at least a portion of clamping unit 13.

[0035] The fixed part 123 is a part for switching between the first state and the second state of the movable part 121. The fixed part 123 has, for example, an adjustment screw for fixing the movable part 121, and the movable part 121 is switched between the first state and the second state by tightening or loosening the screw.

[0036] <Holding part 13> The clamping unit 13 is a component for clamping the loading platform gate of the road-rail vehicle V and detachably attaching the pillar base 11 of the fence post 1 to the loading platform gate. The clamping unit 13 has a first member 131 and a second member 132, as shown in Figures 6 and 7, for example.

[0037] One member 131 is fixed to the tip 122 of the vise pliers 12. The other member 132 is fixed to the column-shaped base 11. In this case, the column-shaped base 11 can be fixed directly to the bed gate without using a separate bolt or other fixing member, eliminating the need for work such as bolt fixing. This improves the ease of installation and removal of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the bed gate of the road-rail vehicle V.

[0038] The first member 131 and the second member 132 may have any shape that can hold the bed gate. In the example of Fig. 7, the first member 131 has a shape in which a first flat plate 131a attached to the tip 122 and a second flat plate 131b in contact with the bed gate are bent at a predetermined angle to form a continuous flat plate, but the first flat plate 131a and the second flat plate 131b may also have a shape in which they are flush and continuous.

[0039] 7, the shape of the other member 132 is assumed to be fitted to a bed gate having an upper flange V1b that is wider than the lower side plate V1a. Therefore, a third flat plate 132a attached to the lower tip 115 of the column base 11 and a fourth flat plate 132b at the tip that hooks onto the lower part of the upper flange V1b are bent at a substantially right angle to form a continuous, substantially L-shape. That is, the tip of the other member 132 extends at a substantially right angle to the extension direction (height direction Z) of the column base 11 in a direction approaching the one member 131. In this case, when the bed gate is made up of the lower side plate V1a and the wider upper flange V1b, the other member 132 contacts the upper flange V1b at a part other than the tip (third flat plate 132a) and contacts the lower side plate V1a at the fourth flat plate 132b at the tip. At this time, a load f1 is applied from the inner space In of the loading platform toward the outer space O, acting as a lever with the upper end flange V1b as the fulcrum, and a load f2 from the outer space O toward the inner space In is applied to the tip of the other member 132, but this is fully countered by a reaction force f3 acting from the lower side plate V1a to the other member 132. As a result, the fence post 1 is less likely to rotate with the upper end flange V1b as the fulcrum relative to the loading platform gate, and is less likely to come off the loading platform gate. This improves the safety of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the loading platform gate of a road-rail vehicle V.

[0040] Furthermore, by bringing the fourth flat plate 132b into contact with the lower end of the upper flange V1b, the other member 132 can obtain a resistance force (not shown) from the upper flange V1b as a reaction to the above-mentioned action, thereby further suppressing the rotation of the fence support 1 and further improving the safety of the rail-road vehicle fall prevention fence 100, which can be freely attached and detached to the loading platform gate of the rail-road vehicle V.

[0041] The shape of the other member 132 may be a continuous flat plate shape in which the third flat plate 132a and the fourth flat plate 132b are bent at a predetermined angle greater than a right angle, or may be a flush, continuous flat plate shape. By bending the fourth flat plate 132b of the other member 132 at a predetermined angle relative to the third flat plate 132a, which is attached approximately parallel to the lower tip 115, the fourth flat plate 132b can be caught on the flange shape at the upper end of the loading platform gate even if equipment or materials collides with the column base 11, preventing the column base 11 from falling off the loading platform gate. This improves the safety of the road-rail vehicle fall prevention fence 100, which is detachably attached to the loading platform gate of the road-rail vehicle V.

[0042] Furthermore, when the loading platform gate is clamped using the one member 131 and the other member 132, it is easier to ensure a larger clamping surface compared to clamping the loading platform gate directly with the vise pliers 12 or a clamp used for temporarily fixing other members, and the columnar base 11 can be more firmly fixed to the loading platform gate. This improves the safety of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the loading platform gate of the road-rail vehicle V.

[0043] Furthermore, when the above-described L-shaped other member 132 is applied, in a clamp device that opens and closes in one direction (such as the second horizontal direction Y), it takes time to adjust the bolts to narrow the clamping portion 13 to the width of the lower side plate V1a after opening it to the width of the upper flange V1b or more. On the other hand, with the vise pliers 12 of the present invention, the clamping portion 13 can be freely swung in the first state, making it easy to position the L-shaped other member 132 so that it contacts the lower side plate V1a, and it can be switched to and fixed in the second state by adjusting a certain bolt, etc., regardless of the opening angle of the clamping portion 13. This improves the workability of the road-rail vehicle fall prevention fence 100, which is detachably attached to the loading platform gate of the road-rail vehicle V.

[0044] The other member 132 may also be loosely fitted into the lower tip 115, and its vertical position may be adjusted along the height direction Z by adjusting a fastener such as a bolt. In the example of FIG. 7, the lower tip 115 of the pillar base 11 is inserted into the hollow other member 132, and a bolt is pre-threaded. In this case, when the same fence post 1 is used for the bed gate of different types of road-rail vehicles V, adjusting the position of the other member 132 makes it possible to easily and firmly fix the pillar base 11 to the bed gate without using a separate bolt or other fixing member. This further improves the ease of installation and removal of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the bed gate of a road-rail vehicle V.

[0045] <Strip 2> The cross bars 2 are components that are installed on multiple fence posts 1. As shown in Figures 3 to 6, for example, the end of the cross bar 2 is inserted into the first hole 112a of the insertion holes 112 of the pillar base 11, and then fitted into the second hole 112b, thereby fixing the cross bar 2 to the fence post 1.

[0046] 8, the horizontal crosspiece 2 has a horizontal crosspiece base 21, a movable end 22, a fixed end 23, and a fastener 24. A known product may be used for the horizontal crosspiece 2. The length of the horizontal crosspiece 2 is, for example, approximately 1015 mm to 1085 mm.

[0047] The horizontal bar base 21 is a component corresponding to the base of the horizontal bar 2. The horizontal bar base 21 may have, for example, a polygonal pillar or a cylindrical shape extending in the first horizontal direction X. The horizontal bar base 21 has, for example, a movable end 22 at one end in the extension direction and a fixed end 23 at the other end. A fastener 24 is pivotally supported on the horizontal bar base 21, for example, on a side surface adjacent to the base body 111 of the columnar base 11.

[0048] The movable end 22 is inserted, for example, into the hollow horizontal bar base 21 and is movable in the first horizontal direction X relative to the horizontal bar base 21. As shown in FIGS. 8 and 9 , the movable end 22 has a movable extension 22a extending in the first horizontal direction X, a movable flange 22b formed by widening the tip of the movable extension 22a, and a sliding shaft 22c slidably fitted to the horizontal bar base 21. The movable end 22 is fitted to the narrow portion 112c of the columnar base 11 by inserting the movable flange 22b into the insertion hole 112. The movable end 22 is slidably fitted to the horizontal bar base 21 by, for example, loosely fitting the sliding shaft 22c into an elongated hole 21a formed near the end of the horizontal bar base 21 and extending in the first horizontal direction X. The length of the horizontal bar 2 in the first horizontal direction X can be adjusted by moving the movable end 22.

[0049] The fixed end 23 is fixed to, for example, the horizontal beam base 21 and does not move in the first horizontal direction X like the movable end 22. The fixed end 23 has, for example, a fixed extension 23a extending in the first horizontal direction X and a fixed flange 23b formed by widening the tip of the fixed extension 23a. The fixed end 23 is fitted into the narrow portion 112c of the columnar base 11 by inserting the fixed flange 23b into the insertion hole 112, as shown in FIG. 10 , for example.

[0050] That is, the crossbar 2 has a movable end 22 loosely fitted into one end so as to be movable in the extension direction of the crossbar base 21, and a fixed end 23 fixed to the other end. In this case, the attachment position of the road-rail vehicle fall prevention fence post 1 to the loading platform tailgate is less restricted by the length of the crossbar 2, and it is easy to position it freely. This makes it possible to further improve the ease of installation and removal of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the loading platform tailgate of a road-rail vehicle V.

[0051] As shown in FIG. 10 , for example, the fastener 24 has a pivotal support portion 241, a rotating portion 242, a connecting portion 243, and a locking portion 244. The horizontal bar 2 may be fixed to the fence post 1, for example, by having the locking portion 244 locked to the hook portion 113. The rotating portion 242 is pivotally supported on the horizontal bar base 21 via the pivotal support portion 241. The locking portion 244 is also pivotally supported on the rotating portion 242 via the connecting portion 243. The locking portion 244 is a component for hooking onto the hook portion 113 of the column base 11. The locking portion 244 may have any shape that can be hooked onto the hooking portion 113, and for example, as shown in FIG. 9 , a ring shape that can be hooked onto the protruding hook portion 113 may be used.

[0052] It is preferable that the fastener 24 is provided on the other end side of the crossbar base 21 where the fixed end 23 is provided. In this case, it is possible to prevent the fastener 24 from coming off the engaging part 113 due to sliding of the movable end 22, compared to when the fastener 24 is provided on the one end side where the movable end 22 is provided. This makes it possible to further improve the safety of the installation and removal of the road-rail vehicle fall prevention fence 100, which is detachably attached to the loading platform gate of the road-rail vehicle V.

[0053] An example of how the fastener 24 is attached to the hooking portion 113 is as follows. First, the rotating portion 242 is rotated toward the side (proximal side) of the hooking portion 113, and the locking portion 244 is hooked onto the hooking portion 113 and loosely fitted thereon. Thereafter, by rotating the rotating portion 242 toward the side (remote side) of the hooking portion 113, the locking portion 244 is pulled toward the side away from the hooking portion 113 via the connecting portion 243, and the locking portion 244 is firmly fixed to the hooking portion 113. This allows the cross bar 2 to be fixed to the fence post 1. Note that by rotating the rotating portion 242 again from the remote side of the hooking portion 113 toward the proximal side, the locking portion 244 can be returned to its loosely fitted state in the hooking portion 113, and the cross bar 2 can be easily removed from the fence post 1.

[0054] <Chain 3> The chain 3 is a component that is stretched across multiple fence posts 1. The chain 3 is hooked to a part of the fence post 1, and when materials and equipment are transported into or out of the loading platform of the road-rail vehicle V, the chain 3 can be detached from the fence post 1, allowing the space between the multiple fence posts 1 to be used as an entrance and exit. The chain 3 may be, for example, a known product.

[0055] (Method for preventing falls of rail vehicles) Next, referring to the drawings, an example of a method for attaching a fence post 1 to a side gate V1 of a loading platform of a road-rail vehicle V will be described as a method for preventing a road-rail vehicle from falling in this embodiment.

[0056] First, as shown in Fig. 11, for example, the worker opens the opening / closing part 114 and operates the fixed part 123 to set the movable part 121 in the first state. After that, the worker grasps the base main body 111 and brings the other member 132 into contact with one side surface of the side gate V1, while bringing the one member 131 into contact with the other side surface of the side gate V1, thereby positioning the base main body 111 with respect to the side gate V1. At this time, the one member 131 and the movable part 121 are free to swing.

[0057] Next, as shown in Fig. 12, for example, the worker adjusts the opening angle of the one member 131 relative to the other side surface of the side gate V1, and then operates the fixing part 123 to set the movable part 121 in the second state. At this time, the one member 131 and the movable part 121 are fixed and do not swing. In addition, the base main body 111 is firmly fixed to the side gate V1 by clamping the one member 131 and the other member 132 between them.

[0058] Finally, the worker closes the opening / closing part 114 to cover the hollow space of the base body 111 to which the vise pliers 12 are fixed, as shown in Fig. 13. Note that, as shown in Fig. 13, the opening / closing part 114 does not need to completely cover the hollow space of the base body 111, and a part of the hollow space may be open so that the tip 122 to which the member 131 is fixed is exposed to the outside.

[0059] Performing the above work completes the method for installing the fence post 1. Note that the worker can easily remove the fence post 1 installed on the side gate V1 from the side gate V1 by opening the opening / closing part 114, operating the fixing part 123, and setting the movable part 121 to the first state.

[0060] According to this embodiment, the fence post 1 and road-rail vehicle fall prevention fence 100 are equipped with vise pliers 12 fixed to the bottom of a pillar-shaped base 11 and switchable between a first state in which the opening angle of the downward-facing tip 122 is variable and a second state in which the opening angle is fixed, and a clamping unit 13 that clamps the bed gate of a road-rail vehicle V between one member 131 fixed to the tip 122 of the vise pliers 12 and the other member 132 fixed to the pillar-shaped base 11. This allows the pillar-shaped base 11 to be fixed directly to the bed gate without using a separate bolt or other fixing member, eliminating the need for work such as bolt fixing. This improves the ease of installation and removal of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the bed gate of a road-rail vehicle V.

[0061] Furthermore, according to this embodiment, the columnar base 111 is a hollow body with one insertion hole (first hole 112a) and another insertion hole (third hole 112d) spaced apart from each other drilled in the side plate and communicating with each other. Therefore, the crosspiece 2 can be attached to the insertion hole 112, and a ring-shaped metal fitting 3a, such as a carabiner, used at the end of the chain 3 can also be attached. This eliminates the need to use different posts 1 for the road-rail vehicle fall prevention fence 100 in the middle and end sections. Even if the same structure is installed, the positions of the crosspiece 2 and the chain 3 can be determined freely. This further improves the ease of installation and removal of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the loading platform gate of a road-rail vehicle V. Furthermore, because the posts 1 for the road-rail vehicle fall prevention fence in the middle and end sections have the same structure, inventory can be standardized. This allows for improved manageability of the road-rail vehicle fall prevention fence 100, which can be attached and detached freely to the loading platform gate of the road-rail vehicle V.

[0062] Furthermore, according to this embodiment, the tip of the other member 132 extends at a substantially right angle to the extension direction of the columnar base 11 in a direction approaching the one member 131. Therefore, in a case where the loading platform gate comprises a lower side plate V1a and an expanded upper end flange V1b, the other member 132 contacts the upper end flange V1b at parts other than the tip and contacts the lower side plate V1a at the tip, so that even if a load f1 is applied from the inner space In of the loading platform toward the outer space O, it can sufficiently withstand this and the support post 1 for the road-rail vehicle fall prevention fence is unlikely to come off the loading platform gate. This improves the safety of the road-rail vehicle fall prevention fence 100, which is detachably attached to the loading platform gate of a road-rail vehicle V.

[0063] Furthermore, according to this embodiment, the crossbar 2 has a movable end 22 loosely fitted into one end so as to be movable in the extension direction of the crossbar base 21, and a fixed end 23 fixed to the other end. Therefore, the attachment position of the road-rail vehicle fall prevention fence post 1 to the loading platform tailgate is less restricted by the length of the crossbar 2, and it is easy to position it freely. This makes it possible to further improve the ease of installation and removal of the road-rail vehicle fall prevention fence 100, which can be detachably attached to the loading platform tailgate of a road-rail vehicle V.

[0064] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0065] 100 Railroad vehicle fall prevention fence 1 Fence support (railway vehicle fall prevention fence support) 11 Columnar base 111 Base body 111a 1st side plate 111b 2nd side plate 111c 3rd side plate 111d 4th side plate 112 Insertion hole 112a 1st hole 112b 2nd hole 112c narrow part 112d 3rd hole 113 Hook 114 Opening and Closing Section 115 Lower tip 12 Vise pliers 121 Moving parts 122 Tip 123 Fixed part 13 Clamping part 131 One-sided member 131a 1st plate 131b 2nd plate 132 Other member 132a 3rd plate 132b 4th plate 2 Horizontal bars 21 Base of crosspiece 21a long hole 22 Movable end 22a Movable extension 22b Movable flange 22c Sliding shaft 23 Fixed end 23a Fixed extension 23b Fixed flange 24 Fasteners 241 Axial branch 242 Rotating part 243 Connecting part 244 Locking part 3 Chain V Road-rail vehicle V1 Side gate V1a lower side plate V1b Upper flange V2 Rear tilt In inner space O outer space S1 left side S2 right side f1, f2 loads f3 drag

Claims

1. A support pole for a rail-road vehicle fall prevention fence used in a rail-road vehicle fall prevention fence that can be detachably attached to the loading platform of a rail-road vehicle, A columnar base; A pair of vise pliers fixed to the lower part of the columnar base and switchable between a first state in which the opening angle of the downwardly directed tip is variable and a second state in which the opening angle is fixed; A clamping portion that clamps the bed gate of the rail-road vehicle between one member fixed to the tip of the vise pliers and another member fixed to the column base; To be prepared A support pole for a rail-road vehicle fall prevention fence, characterized by the following.

2. The columnar base is a hollow body having one insertion hole for inserting a cross beam and another insertion hole spaced apart from the one insertion hole drilled in the side plate and communicating with each other internally. The support pole for a rail-road vehicle fall prevention fence according to claim 1,

3. The clamping portion has a tip end of the other member extending at a substantially right angle to the extending direction of the columnar base in a direction approaching the one member. A support pole for a rail-road vehicle fall prevention fence according to claim 1 or 2, characterized in that:

4. A plurality of rail-road vehicle fall prevention fence posts according to claim 1 or 2; One or more horizontal beams installed on a plurality of the rail-road vehicle fall prevention fence posts; To be prepared A rail-road vehicle fall prevention fence characterized by the following.

5. The horizontal beam is The crosspiece base and a movable end portion that is loosely fitted to one end of the horizontal beam base so as to be movable in the extension direction of the horizontal beam base and that is fitted to one of the rail-road vehicle fall prevention fence posts; A fixed end portion fixed to the other end portion of the cross beam base and fitted to another support post for the rail-road vehicle fall prevention fence; To be prepared The rail-road vehicle fall prevention fence according to claim 4, characterized in that:

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