JP2010070910A - Drain ditch unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To support a cover part without attaching a receiving metal fitting or an insertion pin in a side wall, in a steel drain ditch unit comprising a bottom wall part, a water channel part comprising the side wall parts erected from both ends of the bottom wall part, and the cover part attached detachably to the water channel part to cover the water channel part, and installed on a shoulder, a median strip or the like of a road. <P>SOLUTION: A leg 13d having a height equal to that of a side wall 12b is formed in one end of the cover part 13 by drawing, and the leg 13d is supported by the bottom wall part 12a of the water channel part 12, when the cover part 13 is attached to the water channel part 12. The leg 13d is attached with a reinforcing plate 26 in a bent part, to prevent the leg 13d from being buckling-deformed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a steel drainage groove unit which is installed on a shoulder of a road including a road bridge, a median strip, or the like and has a function of guarding a vehicle from being detached from the road.

  This type of drainage groove unit is used for preventing the automobile from coming off the road or draining rainwater on the road surface, and has various structures.

  FIG. 1 shows an example of this, and includes a water channel portion 1 and a cover portion 2 that is detachably attached to the water channel portion 1 and covers the water channel portion. In addition, a receiving metal fitting 3 having an inverted L-shaped cross section is attached by welding, and a cylindrical supporting metal fitting 4 is welded vertically on the inner surface of the other side wall. On the other hand, one side of the cover part 2 is supported by the receiving metal fitting 3, and an insertion pin 5 protrudes downward on the other side. By inserting and removing the insertion pin 5 into and from the support metal fitting 4, the cover part 2 becomes the water channel part. 1 can be removed or attached. In the figure, reference numeral 6 denotes drain holes that are formed at a suitable interval in the longitudinal direction of the drain groove unit.

  FIG. 2 shows another example. In the water channel portion 1, a bolt-shaped pin 7 is provided in a projecting manner in place of the metal fitting 3, and the cover portion 2 is bent downward. The part 8 is provided with an insertion groove 9 to be inserted into the pin 7.

Some types of drainage groove units of this type are equipped with various types of lock mechanisms to prevent the cover portion from jumping up even when an automobile tire rides on the cover portion. (Patent Documents 1 and 2).
JP 2005-61020 A JP-A-2005-344389

  In the conventional drainage groove unit, in order to support the cover portion, as shown in FIGS. 1 and 2, it is necessary to attach the metal fitting 3 and the pin 7 to the side wall portion of the water channel portion 1. In addition, the load when the automobile tire rides on the cover part can be received mainly by the metal fittings and pins that support the cover part on the road surface side of the road, but it is excessive when the automobile tire rides on the cover part. If a strong impact is received, the welded portion of the metal fitting may be damaged or the pin may be damaged.

  Regarding the metal fitting, if the welding amount is increased to increase the strength of the welded portion in order to prevent breakage at the welded portion, distortion or the like is generated in the water channel portion, resulting in poor productivity. In addition, the pin is more likely to cause stress concentration and breakage than the metal fitting.

  An object of this invention is to provide the drainage groove unit which can support a cover part, without using a receiving metal fitting and a pin.

  The invention according to claim 1 comprises a bottom wall portion, a water channel portion comprising side wall portions rising from both ends of the bottom wall portion, and a cover portion detachably attached to the water channel portion and covering the water channel portion. In the steel drainage groove unit installed on the road shoulder, the median strip, etc., the cover part is at least the end of the road surface side of the road in the width direction perpendicular to the longitudinal direction, and the bottom wall part of the waterway part. The legs that are engaged and supported are integrally bent.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, leg reinforcing means is provided.

  According to the first aspect of the present invention, the cover part is supported by the bottom wall of the water channel part by a leg, and does not require a metal fitting or a pin for supporting the cover part as in a conventional drainage groove unit. The leg can be bent and formed by sheet metal processing such as press processing at the time of manufacturing the cover part, and when a jumping force is generated on the leg by entering an automobile tire etc., the leg hits the side wall part of the water channel part and supports it Rotation of the cover portion is prevented, and effects such as prevention of jumping up are obtained.

  According to the invention according to claim 2, when the depth of the water channel is deep and the legs become long, there is a risk of buckling deformation when receiving an excessive impact by riding a tire of an automobile or the like. By providing the leg reinforcing means as described, the buckling deformation of the leg can be prevented.

Hereinafter, a drainage groove unit according to an embodiment of the present invention will be described with reference to the drawings.
The drainage groove unit 11 shown in FIG. 3 includes a water channel portion 12 and a cover portion 13 that is detachably attached to the water channel portion 12 and covers the water channel portion 12.

  The water channel part 12 rises from the bottom wall part 12a, the side wall part 12b rising from the bottom wall part end on the road surface 14 side of the road, and the side wall part 12c rising from the bottom wall part end on the wall height column 15 side and higher than the side wall part 12b. And a receiving portion 12d that protrudes inward from the end of the side wall portion 12c, and a reinforcing plate 16 that reinforces the side wall portion 12c and the receiving portion 12d is provided on the upper inner surface of the side wall portion 12c. The reinforcing plate 16 is fixed with an appropriate interval in the direction, and a locking hole 18 of a hook 17 to be described later is formed.

  The cover portion 13 includes a placement surface 13a placed on the receiving portion 12d of the water channel portion 12, a water collection surface 13b, an inclined surface 13c connecting the water collection surface 13b and the placement surface 13a, and a drain groove unit. 11 has legs 13d that are bent downward from the ends of the water collecting surface 13b among both ends in the width direction orthogonal to the longitudinal direction of the cover 11, and the cover surface 13 is placed on the mounting surface 13a as shown in FIG. When mounted on the top, a regulating member 21 having an L-shaped cross section that is applied under the receiving portion 12d and regulates the lifting of the cover portion 13 is fixed. A large number of drain holes 22 are formed in the water collecting surface 13b at appropriate intervals in the longitudinal direction of the drain groove unit 11 across the inclined surface 13c. A reinforcing plate 24 is fixed to the inclined surface 13c on the back surface at an appropriate interval in the longitudinal direction of the drainage groove unit 11 corresponding to the reinforcing plate 16. In the reinforcing plate 24, a locking hole 25 of the hook 17 is formed in the same manner as the locking hole 18 formed in the reinforcing plate 16.

  The leg 13d is formed at the same height as the side wall part 12b of the water channel part 12, and when the cover part 13 is mounted on the water channel part 12 by engaging and supporting the leg 13d with the bottom wall 12a of the water channel part 12, The water collection surface 13 b is flush with the road surface 14.

  Further, a reinforcing plate 26 having an inverted L-shaped cross section is fixed to the inner surface between the leg 13d and the water collecting surface 13b. The reinforcing plate 26 constitutes a reinforcing means for the leg 13d and is for preventing buckling deformation of the leg 13d. As shown in the figure, the reinforcing plate 26 as the reinforcing means may be attached only to the leg 13d without being formed across the water collecting surface 13b. As the reinforcing means, instead of the reinforcing plate 26, other reinforcing means, for example, ribs may be attached so as to protrude from the legs 13d, or the legs 13d may be bent in a wave shape to increase the rigidity.

  The legs 13d are preferably formed continuously in the longitudinal direction of the drainage groove unit 11, but may be formed intermittently at appropriate intervals in the longitudinal direction of the drainage groove unit 11.

  The hooks 17 are attached to both ends of the chain 19, and the hooks 17 are hooked on the locking holes 18 and 25 of the reinforcing plates 16 and 24 with the cover portion 13 being attached to the water channel portion 12 as shown in the figure. The cover part 13 is connected to the water channel part 12.

In the figure, 28 is an angle member and 29 is an anchor.
According to the drainage groove unit of the present embodiment, the cover portion 13 is supported on the bottom wall of the water passage portion 12 by the legs 13d on the road surface side of the road, and the side wall portion is similar to the conventional example shown in FIGS. When it is not necessary to attach the metal fitting 3 or the pin 5, the leg 13d can be formed when the cover portion 13 is processed into a sheet metal, and a car tire or the like may ride on the cover portion 13. The load and impact at that time are received by the leg 13d, but the stress is distributed as compared with the insertion pin 5 shown in FIG. 2, and the leg 13d is formed continuously or longer in the longitudinal direction of the drainage groove unit 11 to form the leg. 13d can receive an impact load, and if the cover part 13 tries to jump up by entering a car tire or the like, the leg 13d hits the side wall part 12b and supports it, thereby preventing the jumping up. Rukoto, reinforced leg 13d by the reinforcing plate 26, can be prevented buckling deformation, the cover portion 13 are connected by a chain 19 to a water channel section 12, to help prevent the theft prevention jumping, an effect equal.

  In the embodiment, the leg 13 d is formed on the road surface 14 side of the cover portion 13, but may also be formed on the wall height column 15 side of the cover portion 13. In this case, the cover portion 13 is supported on the water channel portion 12 by the legs 13d on both sides, and the rotation is prevented in any direction by each leg 13d, and the jumping up is prevented. A reinforcing plate as a reinforcing means is also provided on the leg 13d formed on the wall height column 15 side.

  In the embodiment, the cover portion 13 is connected to the water channel portion 12 and the chain 19 on the wall rail side, but a known lock mechanism may be provided to prevent the cover portion 13 from jumping up. In any case, the structure on the wall rail side of the cover part 13 is not a characteristic part of the present invention, and the cover part 13 is connected to the side wall part 12c of the water channel part 12 by a hinge and opened and closed by rotating up and down. It may be.

Sectional drawing of the conventional drainage unit. Sectional drawing of another example of the conventional drainage unit. Sectional drawing of the drainage unit concerning this invention.

Explanation of symbols

11. ・ Drainage unit 12 ・ ・ Water channel portion 12a ・ ・ Bottom wall portion 12b, 12c ・ ・ Side wall portion 12d ・ ・ Receiving portion 13 ・ ・ Cover portion 13a ・ ・ Mounting surface 13b ・ ・ Water collecting surface 13c 13d · · leg 14 · · road surface 15 · · wall height columns 16, 24, 26 · · reinforcement plate 17 · · hooks 18 and 25 · · locking holes 19 · · chain 21 · · restriction member 22 · · drainage hole 28. Angle material 29 Anchor

Claims (2)

  It consists of a bottom wall part, a water channel part consisting of side wall parts rising from both ends of the bottom wall part, and a cover part that is detachably attached to the water channel part and covers the water channel part. In the steel drainage unit to be installed, the cover part is a leg that is supported by engaging with the bottom wall part of the water channel part at least on the road surface side end part of the road among both ends in the width direction orthogonal to the longitudinal direction. A drainage groove unit characterized by being integrally bent.   The drainage groove unit according to claim 1, further comprising a leg reinforcing means.

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