JP3099044B2 - U-shaped groove for easy connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a U-shaped groove which can be easily connected.

[0002]

2. Description of the Related Art Conventionally, a U-shaped groove made of concrete has been generally used. Concrete U-shaped grooves have advantages such as good weather resistance and good stability, but also have disadvantages such as heavy weight, poor workability, and difficulty in transportation. In order to solve this drawback, lightweight U-shaped grooves such as those made of plastic or steel plate have recently been used. Lightweight, easy to transport and work, but desirable, but difficult to butt and join because the whole is thin. It is of course possible to bend both ends to form a joining edge, join the joining edges together, and join them with bolts and nuts, but there is another problem that stacking becomes difficult.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a U-shaped groove which can be easily connected by using a steel plate.

[0004]

In order to solve this problem, according to the present invention, a bottom surface of a U-shaped groove made of a rigid thin plate and having a substantially U-shaped or substantially U-shaped cross section opened upward. The width from one end to the other end to form a slightly tapered shape, the length of a few centimeters, the bottom of the narrow end to the bottom of the wide end It is formed so that it can be fitted inside.

[0005]

DETAILED DESCRIPTION OF THE INVENTION A U-shaped groove having a length of 1 meter is formed by using an extremely thick galvanized steel sheet having a thickness of 2 mm. The cross-sectional shape is a U-shape with an open top, and the inner angle between the bottom surface and the side surface is about 100 degrees. The width of the bottom is 309 mm outside dimension and 305 mm inside dimension at the thick root, 304 mm outside dimension and 30 inside dimension at the narrow tip.
0 millimeter. When two such U-shaped grooves are placed on the inside of a thick root portion with their thin tip portions overlapped by about 5 cm, they can be fitted and connected substantially.

[0006]

Embodiment 1 FIG. 1 shows a U-shaped groove 1 formed of an extremely thick galvanized steel sheet having a thickness of 1.2 mm. The main body has a U-shape that opens upward, and the upper end is bent outward twice at a substantially right angle to form a reinforcing edge 2. The reinforcing edge has a small U-shape that opens downward. The inner angle between the bottom surface 11 and the side surface 12 is about 100 degrees. The opening is formed slightly wider so that the U-shaped grooves can be overlapped and connected, and can be stacked during storage and transportation. The reinforcing edge 2 forms an upper edge 21 formed so as to be substantially horizontal when installed, and a side edge 22 formed by bending the side edge downward substantially at a right angle.

FIG. 2 shows a side view of the U-shaped groove 1. In the figure, the outer fitting portion 3 is on the left and the inner fitting portion 4 is on the right.
It shows a state where the ends are overlapped. In general, when connecting by overlapping, the length is about 5 cm. For this purpose, the dimensions of the cross section at the root portion and the tip portion are slightly changed.

The width of the bottom surface 11 is an inner dimension, and the width of the outer fitting portion 3 is 304.
Millimeter, and 300 mm for the inner fitting portion 4.
The height of the side surface 12 is 300 mm for both the outer fitting portion 3 and the inner fitting portion 4. The width of the upper edge 21 of the reinforcing edge 2 is an outer dimension, 27 mm for the outer fitting portion 3 and 30 mm for the inner fitting portion 4. The width of the side edge 22 of the reinforcing edge 2 is an outer dimension,
Is 28 mm and that of the inner fitting portion 4 is 30 mm.

The width of the inner fitting portion 4 of the left U-shaped groove 1 is 3
00 millimeters, the outer dimensions are less than 303 millimeters. The connection can be made by internally fitting the outer fitting portion 3 of the right U-shaped groove 1 to the width of 304 mm with some margin. It can be slid around 10 cm in length.

As shown in FIG. 3, the side surfaces of the two U-shaped grooves are bent at the same angle, so that they can fit each other. The sides are the same height and just overlap. The upper edge of the reinforcing edge 2 is formed such that the inner fitting portion 3 is wider by 3 mm and the outer fitting portion 4 is externally fitted from above the reinforcing edge 2. Contrary to the main body, the side edge 22 of the outer fitting portion is formed to be narrow because the side edge 22 of the outer fitting portion is inside, and the side edge 22 of the inner fitting portion is preferably formed to be slightly wider. When formed in this way and connecting two U-shaped grooves,
Not only the bottom surface but also the side surface and the reinforcing edge are fitted with each other. The side edges of the overlapping reinforcing edges may be fixed using screws 5.

FIG. 4 shows an example in which a bent edge 6 substantially perpendicular to the main body is formed on the bottom surface 11 and both side surfaces 12 of the outer fitting portion 3 of the U-shaped groove 1. It is formed by extending the bottom surface and both side surfaces by about 3 cm and refracting outward at right angles. It is extremely effective for maintaining the cross-sectional shape, and since it is an external fitting,
It is convenient because it does not get in the way during connection. If a connection hole 7 is formed in the refraction edge 6, it is convenient at the time of connection or the like.

FIG. 5 shows an angle plate 8. Two strips 81 of 3 cm wide and 10 cm long provided with two connecting holes 7 are formed of an extremely thick galvanized steel sheet having a thickness of 3.2 mm.
It is formed in a shape in which the inner angles are connected at about 100.
Of course, it may be integrally formed in a boomerang shape in advance.

The U-shaped groove is reinforced by connecting the vertical and horizontal bending edges 6 to each other on the outer surface of the angle plate 8 using bolt nuts. Since the rib effect works, the holding force of the cross-sectional shape becomes very large.

As shown in FIG. 6, when an angle member 81 longer than the width of the bottom surface is attached to the bent edge 6 of the bottom surface and protruded sideways from both sides of the bottom surface, a U-shaped groove is formed. It is effective in preventing lifting.

As shown in FIG. 7, the provision of a groove-shaped bead 9 which is continuous from the bottom surface to both side surfaces so as to be orthogonal to the longitudinal direction of the U-shaped groove 1 and which is stamped outward is also effective for reinforcement and effect. Is big. If a plurality of such parts are attached to portions other than the inner fitting portion, such as the outer fitting portion 3 and the middle, the reinforcing effect is very large.

As shown in FIG. 8, a long angle material 81 is used.
May be provided over the reinforcing edges 2 of the plurality of U-shaped grooves to connect the U-shaped grooves and simultaneously cover the space below the reinforcing edges. At the point where the reinforcing edge 2 of the outer fitting portion and the inner fitting portion overlap, when the side edges 22 are connected by using the screw 5, they may be fixed at the same time.

[0017]

Since the present invention is configured as described above, the following effects can be expected. 1. A lighter U-shaped groove can be provided as compared with concrete. 2. Since they are formed of thin plates, they can be easily connected by overlapping the ends of the U-shaped grooves. In addition, the overlap length can be adjusted slightly, and by changing the left and right overlap lengths, it is possible to cope with a slight curve. 3. The U-shaped groove main body can be stacked or the like, and can be stored compactly during storage and transportation. 4. Since it is lightweight and easy to carry, it is suitable for construction on mountain tops. 5. Since it can be reinforced with a bend or a bead, it is formed of a thin plate, but has high strength. 6. Although the light U-shaped groove has a drawback of floating due to frost heave and the like, in the present invention, the lift prevention plate protrudes to the side and is buried in the ground, so that there is no problem of frost heave even with a light weight.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a U-shaped groove.

FIG. 2 is a side view showing a connection state of a U-shaped groove.

FIG. 3 is a front sectional view showing a connection state of a U-shaped groove.

FIG. 4 is a front view showing an example of an end of a U-shaped groove.

FIG. 5 is a plan view showing an example of an angle plate.

FIG. 6 is a perspective view showing an example of an angle member.

FIG. 7 is a perspective view showing an example of a state of reinforcement of a U-shaped groove.

FIG. 8 is a front sectional view showing a mounting state of an angle member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 U-shaped groove 11 Bottom surface 12 Side surface 2 Reinforcement edge 3 External fitting portion 4 Internal fitting portion 5 Screw 6 Refraction edge 7 Connection hole 8 Angle plate 81 Angle material 9 Bead

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E03F 5/04

Claims (3)

(57) [Claims] In a U-shaped groove made of a rigid thin plate and having a substantially U-shaped or U-shaped cross section opened upward, the width of the bottom surface is from the outer fitting portion to the inner fitting portion. tapered slightly Te, and is attached to protrude outward along the side surface on the edge, the cross-sectional shape is substantially L-shaped, to no small co which is open downwardly
The U-shaped body is formed slightly narrower on the outer fitting side where the U-shaped body is wider, and slightly wider on the inner fitting part where the U-shaped body is narrower. At the time of installation, the reinforcing edge is externally fitted at the end on the side where the bottom fits inside, and formed so as to be superimposable within a range of a few centimeters in length, making it easy to connect U-shaped groove. 2. A bent edge formed by being bent in a direction intersecting with the main body on the bottom surface of the outer fitting portion of the U-shaped groove and / or the edges of both side surfaces. U-shaped groove for easy connection. 3. The width of the opening is formed wider than the width of the bottom so that at least half of the height can overlap when stacking U-shaped grooves of the same standard. , according to any one of claims 1 or claim 2, coupling easy U-shaped groove.