JP2002061268A - Side ditch cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a cover for a side ditch arranged along a road or a track, which is prevented from being blown off by wind pressure or the like, when a train passes thereby, and has an anti-skid surface. SOLUTION: A cover main body 2 formed of a plastic has a cover top face 4 in which recessed bar member installing portions 5 are formed at intervals as appropriate. Each bar member installing portion 5 has engaging hole portions 8 formed in its internal wall, and has an elastic support piece 9 arranged on its bottom surface 5e. Then, a bar member 3 formed of concrete and having engaging projections 10 on its side surfaces so as to be engageable with the respective engaging hole portions 8, is inserted into each bar member installing portion 5, and buried in the cover top face 4 such that an upper face 3a of the bar member 3 is slightly protruded from the cover top face 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gutter cover for closing a gutter provided along a road or a track, for example, a gutter provided along a railroad rail for storing electric cables and the like. It relates to a gutter lid for closing.

[0002]

2. Description of the Related Art Heretofore, a concrete lid has been often used as a gutter of this type so as not to fly due to wind pressure when passing through a train. However, due to its weight, various operations such as transportation, installation, and removal at the time of maintenance and inspection cannot be performed easily, and it is impossible for one worker to perform these operations efficiently.

Therefore, recently, a light-weight gutter cover made of plastic has been proposed in place of a concrete gutter cover. For example, Japanese Patent Application Laid-Open No. 2000-87437 discloses that a plastic thin-walled surface material constituting a surface portion of a lid and a rear surface portion are considered in consideration of weather resistance, impact resistance, economy, reuse of waste materials, and the like. The thick back material made of plastic is separately molded, and both are integrally fixed and disassembled by a fixing member. The thin front material has better weather resistance and impact resistance than the thick back material. There is disclosed a plastic side gutter which is formed by using a raw material and has a predetermined gap between a thin surface material and a thick back material.

[0004]

However, in the case of the gutter cover made of a light-weight plastic as described above, there is a possibility that the gutter will be blown off by a strong wind or the like when passing through the Shinkansen unless some measures are taken. Further, the lid made of plastic has a problem that the surface of the lid is particularly slippery, and even if a convex pattern for preventing slippage is formed on the lid surface, it becomes slippery when wet with water.

In view of the above problems in the plastic gutter, the present invention does not provide a gutter having a surface which does not fly due to wind pressure or the like when passing through a train (shinkansen) and has a non-slip surface. It is assumed that.

[0006]

[Means for Solving the Problems] To solve such problems,
In the gutter according to the present invention, a weight member having a higher specific gravity than plastic is buried in a top surface (hereinafter, referred to as a top surface of the lid) of the lid body made of plastic so that its upper surface is exposed. By forming the entire lid body from plastic in this way, it is possible to reduce the weight as compared with the conventional concrete gutter lid, and it is possible to easily carry, mount, perform maintenance and inspection work, and the like. In addition, by embedding the weight member, it can be adjusted to a weight that does not fly due to wind pressure etc. when passing the Shinkansen, and furthermore, by exposing the surface of the weight member inside the lid top surface, it is made of plastic The slidability of the lid surface specific to the lid can be effectively suppressed. Therefore, the gutter cover of the present invention can be suitably used as a gutter cover provided along a road or a track, particularly as a gutter cover provided along a rail of a Shinkansen.

[0007] The weight member in the above configuration is a weight member having a higher specific gravity than plastic, for example, concrete,
It can be made of metal (for example, aluminum alloy), ceramics (including bricks and ceramics), stone, and the like, but it is preferable to use a concrete mold in terms of moldability, weight, slip resistance and strength.

Preferably, the weight member is buried so that its upper surface slightly protrudes from the top surface of the lid. By disposing the weight member in this manner, the slidability of the lid surface can be further suppressed. However, the present invention is not limited to such a configuration, and the upper surface of the weight member may be slightly depressed from the top surface of the lid, or may be disposed so as to be flush with the upper surface.

[0009] In the above structure, a concave portion or a groove portion is provided in the top surface of the lid body, and an engaging portion is formed on an inner wall of the concave portion or the groove portion. The weight member can be embedded in the top surface of the lid so as to provide a suitable engagement portion. Here, the concave portion has a bottom surface, whereas the groove portion has no bottom surface. The present invention is not limited to such a mounting structure of the weight member, but by mounting the weight member in this way, it is possible to mount the weight member with a very simple structure and without falling off.

Further, a spring supporting structure capable of elastically supporting the weight member can be provided in the recess or the groove. Specifically, for example, a U-shaped groove is provided in the bottom surface of the concave portion, and the inside of the groove is protruded to form an elastic support piece, thereby forming a spring support structure. Alternatively, a separate spring member may be prepared, and the weight member may be elastically supported via the spring member. If the weight member is configured to be elastically supported as described above, not only can the pedestrian be given the feeling of being pushed back by the weight member when the lid surface is trampled, but also in a state where the weight member protrudes from the lid top surface. Even if it is arranged, when a load is applied, the weight member can sink, so that the bogie or the like can run smoothly.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples.

A gutter 1 according to an embodiment of the present invention is shown in FIG.
As shown in FIG. 3 to FIG. 3, the cover body 2 is made up of a plastic cover body 5 and five concrete bar members 3 embedded in a cover top surface 4 of the cover body 2.

The lid body 2 is formed by integrally molding a plastic raw material, and is made of a plate surface having an appropriate thickness. The lid top surface 4 and five bar material mounting portions provided in the lid top surface 4 are provided. 5, lid side surfaces 6, 6 hanging on the left and right sides of the lid top surface 4, and a lid front and rear surface 7, hanging from near the front and rear ends of the lid top surface 4,
7 is provided. As the plastic raw material forming the lid body 2, not only unused plastic raw material but also recycled plastic raw material can be used. As a molding method, injection molding, blow molding or press molding, and other currently known molding methods can be employed.

As shown in FIG. 2, the lid top surface 4 has a rectangular shape when viewed from above, and a bar material mounting portion 5 is provided in the lid top surface 4 at appropriate intervals in the longitudinal direction of the lid top surface. .

As shown in FIG. 2, the bar mounting portion 5 is formed as a recess having a long band shape in the short direction of the top surface of the lid as viewed from above, and as shown in FIG. Is formed so as to be provided with inner wall surfaces 5a, 5b, 5c, 5d (5d is not shown) and a bottom surface 5e.
Further, as shown in FIGS. 3 to 5, the lower end portions of the front and rear inner wall surfaces 5 a and 5 b facing each other in the longitudinal direction are cut into a rectangular shape in each bar material mounting portion 5, and the engagement hole portion 8 is formed. 8 and
U-shaped grooves are formed in the bottom surface 5e at two positions before and after the bottom surface 5e, and elastic support pieces 9, 9 are provided so that the U-shaped grooves are raised one step from the bottom surface 5e.

On the other hand, the concrete bar material 3 is a mold material (precast concrete) formed by molding ordinary concrete, lightweight aggregate concrete, cellular concrete or other concrete, and has approximately the same size as the bar material mounting portion 5. Further, it is formed in a rectangular parallelepiped shape large enough to be inserted into the bar material mounting portion 5, and provided at the lower end portions of the front surface 3 b and the rear surface 3 b with engagement projections 10, 10 which can be fitted into the engagement holes 8. is there. The type of concrete in this case is not particularly limited.

In the concrete bar 3, the engaging projection 10 is formed such that the vertical width thereof is smaller than the vertical width of the engaging hole 8 by an appropriate width. 8
It is formed so that it can move up and down in the inside.

As shown in FIG. 3, the concrete bar material 3 is inserted into each bar material mounting portion 5, and
0 and 10 are fitted so as to fit into the engagement holes 8 and 8 and to be placed on the elastic support pieces 9 and 9.

In this mounted state, the bar member 3 is locked by the engagement between the engagement hole 8 and the engagement protrusion 10, and the upper surface of the engagement protrusion 10 is engaged by the elastic support of the elastic support piece 9. The bar member 3 is pressed against the upper frame of the hole 8 so as to prevent the bar material 3 from rattling. In the normal state, the bar member 3 projects upward from the lid top surface 4 by an amount corresponding to the protrusion of the elastic support pieces 9, 9, and as shown in FIG. 5, a pressing force is applied to the bar member 3 from above. When it is applied, the elastic support pieces 9 and 9 are bent downward elastically, the bar material 3 sinks into the bar material mounting portion 5, and the upper surface 3a of the bar material 3 and the lid top surface 4 become flush. When the pressing force disappears, the bar material 3 returns to the state of protruding from the top surface 4 of the lid again due to the repulsive force of the elastic support pieces 9 and 9.

The gutter lid 1 having the above structure can be reduced in weight as compared with the conventional concrete gutter lid by arranging the concrete bar 3 in the top surface 4 of the lid.
In addition, the weight can be adjusted so as not to fly due to wind pressure or the like when passing through a train. Also, the upper surface 3a is provided in the lid top surface 4.
By embedding the concrete bar material 3 so that is exposed, it is possible to suppress the slipperiness of the lid surface peculiar to the plastic lid. Moreover, in this embodiment, the lid top surface 4
By making the concrete bar material 3a protrude, the slipperiness of the surface can be further suppressed. Also,
By embedding the concrete bar material 3 in the cover top surface 4 at appropriate intervals, the strength of the entire gutter cover 1 can be increased. Furthermore, by elastically supporting the concrete bar member 3 with the elastic support pieces 9 (spring support structure), not only can the pedestrian feel the feeling of being pushed back when stepping on, but also the trolley and the like can be used. When you ride on 3, the bar material 3 sinks and becomes flush with the lid top surface 4,
A truck or the like can run smoothly.

In the present invention, it is optional to form an anti-slip pattern on the top surface 4 of the lid, the upper surface 3a of the bar material 3, or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a gutter according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the gutter shown in FIG. 1;

FIG. 3 is a longitudinal sectional view of the gutter cover of FIG. 1;

FIG. 4 is a perspective view of an essential part showing a state in a mounting portion of the gutter cover of FIG. 1;

FIG. 5 is a longitudinal sectional view showing an operation when a force is applied to the gutter cover of FIG. 1 from above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side groove cover 2 Lid body 3 Bar material 4 Lid top surface 5 Bar material mounting part 8 Engagement hole part 9 Elastic support piece 10 Engagement convex part

Claims (6)

[Claims] 1. A gutter having a structure in which a weight member having a specific gravity greater than that of plastic is embedded in a top surface of a lid body made of plastic so that an upper surface thereof is exposed. 2. The gutter cover according to claim 1, wherein the weight member is a concrete shape member. 3. The gutter according to claim 1, wherein the weight member is embedded so that an upper surface of the weight member slightly protrudes from a top surface of the lid body. 4. A recess or groove is provided in the top surface of the lid body,
The structure according to any one of claims 1 to 3, wherein an engagement portion is formed on an inner wall of the concave portion or the groove portion, and an engagement portion engageable with the engagement portion is provided on a side surface of the weight member. Gutter lid. 5. The side groove cover according to claim 4, wherein a spring supporting structure capable of elastically supporting the weight member is provided in the concave portion or the groove portion. 6. The spring supporting structure according to claim 5, wherein a U-shaped groove is provided in a bottom surface of the concave portion, and the inside of the groove is raised to form an elastic support piece. Gutter lid.