JP2015083765A - Expansion cover for wall handrail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expansion cover for a wall handrail capable of lengthening service life, by following up the expansion of an expansion spacing part of the wall handrail, while enhancing strength and rigidity to a wind load.SOLUTION: A reinforcement material 6 continuing in the expansion direction of the expansion spacing part 4, is buried in a sheet-like cover body 5. The expansion cover 1 for the wall handrail is formed in a zigzag shape having a ridge-folding line L1 and a bottom-folding line L2 orthogonal to the expansion direction. Both end parts 7a and 7b in the expansion direction are fixed to both-side wall handrails 3a and 3b by sandwiching the expansion spacing part 4. The expansion cover 1 for the wall handrail covers the expansion spacing part 4 of the wall handrails 3a and 3b.

Description

  The present invention relates to an extendable cover for a wall rail that covers a play section of a wall rail provided at an end of a road bridge, for example.

  In general, a side wall of a road bridge is provided with a wall height column for preventing an object from falling from a road surface or a raindrop from a traveling vehicle. At the end of the wall rail, there is a gap part that forms a gap to absorb the displacement in the bridge axis direction caused by the expansion and contraction of the bridge girder due to temperature changes and the bending of the bridge girder by the traveling vehicle. Is provided with a telescopic cover for a wall rail that prevents the falling of objects and rainwater splashes from the gap (for example, Patent Document 1).

  As shown in FIG. 9, the telescopic cover for the wall rail of Patent Document 1 has a structure in which a metal plate 102 is embedded in vulcanized rubber 101, and one end thereof is fixed to the wall rail 103 with a mounting bolt 104. The other end portion is overlapped with the wall height column 105 in a free state so as to block the gap between the wall height column 103 and the wall height column 105.

Japanese Patent Laying-Open No. 2008-7956 (paragraph numbers 0008 and 0015, FIG. 2)

  Incidentally, the telescopic cover for the wall rail of Patent Document 1 has a structure in which a metal plate is embedded, and the other end is placed in a free state so as to overlap the wall rail, so that the strength and rigidity against wind load and the like are increased. While raising, it is possible to follow the expansion and contraction of the play portion by sliding the portion overlapped on the wall rail.

  However, repeated sliding on the wall rail may cause wear damage to the wall rail extension cover, and in particular, the expansion and contraction of the gap portion caused by the bending of the bridge girder by the traveling vehicle has a large number of repetitions. It is easy to cause wear damage of the expansion / contraction cover. Furthermore, with the rigid wall rail extension cover reinforced with a metal plate being subjected to wind load and being pressed against the wall rail, the expansion and contraction of the loose section is repeated, so that the slide of the part superimposed on the wall rail is Wear damage due to repetition is promoted, which may shorten the product life of the wall rail extension cover.

  An object of the present invention is to provide an expansion / contraction cover for a wall rail that can follow the expansion and contraction of the loose portion of the wall rail while increasing the strength and rigidity against wind load and the like and can extend the life.

  In order to achieve the above-mentioned object, the wall railing extension cover according to the present invention covers the idler portion of the wall rail and embeds a reinforcing material continuous in the extension direction of the idler part in the sheet-like cover body. Thus, both end portions in the expansion / contraction direction are fixed to the wall height columns on both sides across the gap portion and formed in a zigzag shape having a mountain fold line and a valley fold line orthogonal to the expansion / contraction direction.

  According to the above configuration, since the reinforcing material is embedded in the sheet-like cover body, it is possible to increase the strength and rigidity of the wall rail extension cover with respect to the force received from the front of the wall rail such as wind load. In addition, since the wall railing expansion and contraction cover is formed in a zigzag shape, it can be easily expanded and contracted in the direction of the center line of the zigzag while ensuring the desired strength and rigidity against wind loads and the like. This makes it possible to fix the wall rail elongate cover to the wall rails on both sides of the gap section and allow it to follow the expansion and contraction of the gap section without sliding against the wall rail. Can be achieved.

  Further, the reinforcing material may be a plurality of plate members arranged side by side in the direction orthogonal to the expansion / contraction direction.

  According to this configuration, by appropriately setting the strength and rigidity per sheet of the reinforcing material and the number of the plates, the wall railing expansion / contraction cover as a whole has the desired strength and rigidity in the front-rear direction and the expansion / contraction direction. Can be set. This allows the wall railing telescopic cover to be manually deformed in the expansion and contraction direction according to the size of the free space while ensuring sufficient strength and rigidity against wind loads, etc. Can be made easier.

  Moreover, you may make it form the reinforcement part which deform | transforms this reinforcement material in the direction orthogonal to the plate | board surface between the mountain fold line and valley fold line of a reinforcement material.

  According to this configuration, since the reinforcing member is formed by deforming the plate material as the reinforcing material between the mountain fold line and the valley fold line in a direction perpendicular to the plate surface, the expansion direction of the expansion rail cover for the wall rail Without increasing the rigidity, the strength and rigidity against the force received from the front of the wall rail such as wind load can be increased.

  Further, a horizontal fold portion may be formed in a direction intersecting with the mountain fold line and the valley fold line, and the mountain fold line and the valley fold line on both sides may be continuously formed across the horizontal fold portion.

  According to this configuration, the mountain fold line and the valley fold line on both sides of the lateral fold portion are made continuous, so that the zigzag wall rail extension cover is impossible at the position of the horizontal fold portion without causing excessive wrinkles. Can be bent without any problem. As a result, the wall rail elongate cover can be bent and formed into, for example, an L shape, and the upper surface side and the front side of the loose section of the wall rail can be covered with a single wall rail elongate cover. Moreover, since the mountain fold line and the valley fold line are made continuous, in the lateral fold part, the mountain fold part and the valley fold part on both sides of the lateral fold part are mixed, so that it tends to be a weak point part against external force, for example, an L-shaped corner part Strength and rigidity can be increased.

  As described above, according to the present invention, the reinforcing material is embedded in the sheet-like cover body to constitute the wall rail extension cover, and the wall rail extension cover is formed in a zigzag shape. This increases the strength and rigidity of the wall rail extension cover against wind loads, etc., and allows the wall rail extension cover to follow the expansion and contraction of the loose section of the wall rail, so that the wall rail extension cover slides against the wall rail. Is not necessary, and the life of the telescopic cover for the wall rail can be extended.

The perspective view of the wall rail which installed the telescopic cover for wall rails concerning this invention Perspective view of wall railing telescopic cover Front view of telescopic cover for wall railing Plan view of telescopic cover for wall railing Front view of reinforcement Perspective view of wall rail before installation of wall rail telescopic cover AA sectional view of FIG. The perspective view of the wall rail which installed the expansion cover for wall rails of another form which concerns on this invention A perspective view of a wall rail installed with a conventional wall rail telescopic cover

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the telescopic cover for wall rails which concerns on this invention is demonstrated using drawing.

  As shown in FIGS. 1 to 5, the wall rail elongating cover 1 covers, for example, the idler portion 4 between the wall height columns 3 a and 3 b located on the side portions of the road bridges 2 a and 2 b, and has a sheet-like shape. The cover main body 5 is embedded with a reinforcing material 6 that is continuous in the expansion / contraction direction of the play portion 4, and is formed in a zigzag shape having a mountain fold line L1 and a valley fold line L2 orthogonal to the expansion / contraction direction, and in the expansion / contraction direction. Both end portions 7a and 7b are fixed to the wall height columns 3a and 3b on both sides with the gap portion 4 interposed therebetween.

  The road bridges 2a and 2b have a structure in which wall height columns 3a and 3b are provided on the side of the road surface portion 8 on which the vehicle travels. The road bridges 2a and 2b are arranged side by side in the direction of the bridge axis so that one bridge is formed as a whole. Is configured. An expansion / contraction device 9 is provided between the road bridge 2a and the road bridge 2b on the road surface portion 8 so that the vehicle travels between the road bridge portion 2a and the road surface portion due to temperature changes without being obstructed from traveling between the two. The displacement of the road surface portion 8 due to the bending of the 8 or the like is absorbed.

  As shown in FIG. 6, the wall height columns 3a and 3b are provided on the side portions of the road bridges 2a and 2b in order to prevent the falling of objects from the road surface 8 or the falling of rainwater splashes by the traveling vehicle. The idler portion 4 set at the end portion absorbs the displacement of the wall height columns 3a and 3b caused by expansion and contraction due to temperature change, bending of the road surface portion 8 by the traveling vehicle, and the like.

  As shown in FIG. 7, the cover body 5 has a structure in which, for example, two draw cloths 10 made of nylon or polyester base cloth impregnated with chloroprene rubber are bonded to each other. The reinforcing material 6 is embedded in the cover body 5 by adhering and sewing the reinforcing material 6 therebetween.

  The cover body 5 and the reinforcing member 6 embedded in the cover body 5 are folded in a zigzag shape to form a mountain fold line L1 and a valley fold line L2, thereby forming a zigzag wall railing expansion / contraction cover 1. The Further, the wall rail elongate cover 1 formed in a zigzag shape is configured in an L shape by stitching the two, and covers the upper surface side and the front side of the gap portion 4 of the wall height columns 3a and 3b. ing.

  The reinforcing members 6 are made of, for example, a plurality of stainless steel plates, and are juxtaposed at intervals in a direction orthogonal to the expansion / contraction direction, and between the mountain fold line L1 and the valley fold line L2 of each reinforcing member 6. By deforming the reinforcing member 6 in a direction perpendicular to the plate surface, a substantially rectangular reinforcing portion 11 protruding to the front side is formed. For example, the reinforcing portion 11 is formed by drawing after the reinforcing material 6 is embedded in the cover body 5 and before forming the mountain fold line L1 and the valley fold line L2.

  Both end portions 7a and 7b are formed in a plane parallel to the wall height columns 3a and 3b, and the wall height column expansion / contraction cover 1 is attached to the wall height columns 3a and 3b at portions of the both end portions 7a and 7b where the reinforcing member 6 is located. A long hole-like mounting hole 12 is formed for bolting. While holding both ends 7a, 7b with the flat bar 13, the bolt 14 set in the wall height column 3a, 3b is positioned so as to pass through the mounting hole 12, and the bolt 14 is tightened so that the wall rail extension cover 1 is It is attached to the play section 4 of the handrail 3a, 3b.

  According to the above configuration, the wall rail 4 between the wall rails 3a and 3b is covered with the wall rail telescopic cover 1, so that objects and rainwater splashes from the traveling vehicle are prevented from falling from the gaps in the space 4. be able to.

  Further, since the reinforcing material 6 is embedded in the wall rail extension cover 1, the wall rail extension cover 1 can be set to have sufficient strength and rigidity against wind load and the wall rail extension cover 1 can be set. Is formed in a zigzag shape, so that it is possible to follow the expansion and contraction of the gap portion 4. Thereby, it is not necessary to slide the wall rail elongate cover 1 with respect to the wall height columns 3a and 3b, and it is possible to prevent wear damage of the wall rail elongate cover 1 and extend the life.

  Further, since the wall rail extension cover 1 is formed in a zigzag shape, it can be easily deformed in the expansion / contraction direction of the gap section 4, and the wall rail extension cover 1 can be manually adjusted according to the size of the gap section 4. And can be attached to the wall height columns 3a and 3b.

  In addition, this invention is not limited to said embodiment, A change can be suitably added within the scope of the present invention. For example, instead of the wall rail elongate cover 1 configured in an L shape by stitching two sheets or the like, as shown in FIG. 8, one wall cover is bent in a zigzag shape and formed in an L shape. A cover 15 can also be employed.

  The wall rail extension cover 15 has substantially the same configuration as the wall rail extension cover 1 of the above form, but has a structure in which the lateral fold 16 is set in a direction intersecting the mountain fold line L1 and the valley fold line L2. A mountain fold line L1 and a valley fold line L2 on both sides of the horizontal fold part 16 are formed to be continuous. Thus, the wall rail elongate cover 15 is formed into an L-shape without any excessive wrinkles, and is formed on the upper surface side of the gap portion 4 of the wall height columns 3a and 3b with a single wall rail elongate cover 15. And the front side can be covered.

  The lateral folding portion 16 can be set at an arbitrary position of the cover body 5 between the reinforcing members 6, and the shape of the wall rail column extension cover 15 can be set according to the shape of the wall column 3 a, 3 b. it can. At the position of the lateral fold 16, mountain folds and valley folds are mixed, the reinforcing material 6 does not exist, and the strength and rigidity of the L-shaped corner that tends to be a weak point against external force are increased. Yes.

  Further, the reinforcing member 6 is not limited to a plurality of plate members, and may be a single plate member as long as desired strength and rigidity can be obtained and can be formed in a zigzag shape. It may be a number of wires arranged in

DESCRIPTION OF SYMBOLS 1 Telescopic cover for wall rails 2a, 2b Road bridge 3a, 3b Wall height column 4 Spacing part 5 Cover main body 6 Reinforcement material 7a, 7b Both ends 8 Road surface part 9 Stretching device 10 Stretching cloth 11 Reinforcement part 12 Mounting hole 13 Flat bar 14 Bolt 15 Telescopic cover for wall railing 16 Horizontal fold L1 Mountain fold line L2 Valley fold line

Claims (4)

  An extension cover for a wall rail that covers the gap portion of the wall rail, comprising a sheet-like cover body embedded with a reinforcing material that is continuous in the extension direction of the gap portion, and both end portions in the extension direction sandwich the gap portion. A wall railing expansion / contraction cover characterized by being formed in a zigzag shape having a mountain fold line and a valley fold line perpendicular to the expansion / contraction direction.   The wall railing expansion / contraction cover according to claim 1, wherein the reinforcing material is a plurality of plate members arranged in parallel in a direction orthogonal to the expansion / contraction direction.   3. The reinforcing member according to claim 2, wherein a reinforcing portion is formed between the mountain fold line and the valley fold line by deforming the reinforcing material in a direction perpendicular to the plate surface. Telescopic cover for wall rails as described.   A lateral fold is formed in a direction intersecting the mountain fold line and the valley fold line, and a mountain fold line and a valley fold line on both sides are continuously formed across the horizontal fold part. Item 4. An expansion cover for wall railings according to item 1, 2 or 3.

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