JP3294513B2 - Support base plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support base plate for erection of a support such as a road fence, and more particularly to a support base plate suitable for erection of a support on a slope.

[0002]

2. Description of the Related Art Conventionally, when a base plate method is adopted as a method for erecting a pillar of a road fence, for example, FIG.
As shown in (1), a method is generally used in which a simple flat base plate 2 is welded and fixed to the lower end surface of a support 1 and a reinforcing rib 3 is welded and fixed to form a support 4 with a base plate. Such a column 4 with a base plate is installed by fixing the base plate 2 with anchor bolts 5. When a pillar is to be erected on a slope with this type of structure, as shown in FIG. 10, the lower end of the pillar 4 is cut diagonally according to the road gradient, and the base plate 2 is fixed by welding.

[0003]

Since the above-mentioned conventional supporting column 4 with a base plate is manufactured by welding, it must be manufactured at a factory each time in accordance with the road gradient, which is complicated and increases the cost. . In addition, there is, of course, a problem that production must be performed after receiving an order for a product, and it takes a long time from receiving an order to manufacturing and delivering.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and does not require welding to fix a support by assembling. It is an object of the present invention to provide a support base plate capable of performing the following.

[0005]

According to the present invention, there is provided a base plate for a support having a hollow portion which is open on the upper surface and the lower surface and has an arc shape whose inner surface in a vertical cross section is upwardly convex. And a slidably fitted in the hollow portion of the base plate main body in only one direction along the arc, having a column mounting portion at an upper portion protruding from the opening on the upper surface side, and A core having a fulcrum part which comes into contact with a base plate installation surface and serves as a fulcrum at the time of the sliding rotation, and a column fixing means for fixing a column to the column mounting portion are provided.

According to a second aspect of the present invention, the fulcrum at the center of the lower surface of the core according to the first aspect is located below the lower surface of the base plate body.

According to a third aspect of the present invention, the hollow portion of the base plate body in the first aspect has a spherical inner surface and a flat downwardly expanding tapered surface on both sides in a direction orthogonal to the core sliding rotation direction. The child element has an outer surface in contact with the spherical inner surface and the downwardly expanding tapered surface.

According to a fourth aspect of the present invention, in the first aspect, the supporting column fixing means includes a fixing bolt inserted into a bolt insertion hole formed vertically penetrating the center of the core and a fixing bracket fixed by the fixing bolt. Wherein the fixing bracket has a leaf spring having a contour whose periphery is closely fitted to the inner surface of the column.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to an embodiment shown in FIG. FIG. 1 shows a round pipe support 1 on a base plate 11 according to an embodiment of the present invention.
2 is a front view in a state in which the fixing member 2 is fixed, FIG. 2 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a sectional view taken along the line BB in FIG. 2, and FIG. The base plate 11 of this embodiment is applied to a road fence support. As shown in these figures, the base plate 11 has a base plate body 14 having a hollow portion 13 extending downward and opening on the upper surface and the lower surface. And the hollow portion 1 of the base plate body 14
3 is slidably rotatable in the left-right direction in FIG. 3 as indicated by an arrow a, and is fitted so as to restrict the rotation in the front-rear direction (direction orthogonal to the paper surface in FIG. 3: right-left direction in FIG. 4). At the same time, it has a column mounting portion 15 at the upper portion protruding from the opening 13c on the upper surface side, and a fulcrum portion which is in contact with a base plate installation surface at the center in the left-right direction of the lower end surface and becomes a fulcrum for the sliding rotation There is provided a core 16 having P and a column fixing means 17 for fixing the column 12 to the column mounting portion 15.

The hollow portion 13 of the base plate body 14
Has an upwardly convex spherical inner surface 13a and, on both sides in the front-rear direction, a flat downward-spreading tapered surface 13b as shown in FIG. The core 16 has a spherical outer surface 16a in surface contact with the spherical inner surface 13a of the hollow portion 13 and a flat lower expanding tapered surface 16b in surface contact with the lower expanding tapered surface 13b.

The column fixing means 17 has a structure in which a fixing metal 19 is fixed by a fixing bolt 18 and a nut 22 which are inserted through a bolt insertion hole 16c which is vertically penetrated into the center of the core 16. Is composed of two leaf springs 20 having a contour that fits tightly on the inner surface of the column 12, and a round pipe 21 as a spacing member for keeping the interval between the two leaf springs 20. As shown in FIG. 5, the leaf spring 20 has a shape having a plurality of blades 20a extending radially, and has an outer diameter slightly larger than the inner diameter of the support pipe.

The mounting procedure of the leaf spring 20 and the round pipe 21 is as follows. The leaf spring 20 and the round pipe 21 are arranged above the column mounting portion 15 of the core 16 and the bolt insertion hole 16c is provided.
The nut 22 screwed into the tip of the fixing bolt 18 is tightened, and the leaf spring 20
To the column mounting portion 15 side. The attachment of the leaf spring 20 is performed before the leaf spring 20 is fitted into the column 12.

The fulcrum P of the core 16 is located below the lower surface of the base plate body 14 by a dimension h in FIG. The fulcrum portion P in the illustrated example has a fan-shaped shape as viewed from the front of the front and rear wall portions 25 that form the lower-spread tapered surface 16b of the core 16, and has a slightly rounded shape as a key portion of the fan shape. Is formed. In the illustrated example, the setting is such that it can handle up to a 15 ° road gradient.
The wall 25 has a fan shape of 150 °. Further, as shown in FIGS. 2 and 7, the base plate body 14 is provided with four anchor bolt holes 26 which are counterbore holes.

Using the base plate 11 described above, the support 1
The work of erecting 2 will be described. First, two leaf springs 2 are placed above the support mounting portion 15 of the core 16 as described above.
0 and the round pipe 21 between them are fixed with fixing bolts 18 and nuts 22. Next, the part of the leaf spring 20 fixed to the core 16 is pushed into the support 12 to
6 is fixed to the support 12. In this case, the leaf spring 20 having an outer diameter slightly larger than the inner diameter of the support pipe is bent upward and pushed into the support 12, whereby the peripheral edge of the leaf spring 20 is pressed against the inner wall of the support pipe against the force in the pull-out direction. Further, the core 16 is firmly fixed to the column 12 so that the core 16 does not easily come off.

Next, the column 12 to which the core 16 is attached as described above is vertically set at a predetermined position on the installation surface F, and the column 12 is
The base plate body 14 is passed over the core 16 as shown in FIG.
In this case, the four anchor holes 26 of the base plate main body 14 are inserted into the anchor bolts 27 previously embedded and fixed at the standing position. Next, as shown in FIG. 6, when the nut 28 is screwed into the anchor bolt 27 and tightened,
The base plate body 14 strongly fixes the core 16 against the installation surface F side, so that the column 12 is firmly erected. In this case, since the fulcrum portion P of the core 16 is located below the lower surface of the base plate main body 14, the pushing force of the base plate main body 14 against the core 16 when the nut 28 is tightened acts sufficiently. The child 16 is firmly fixed.

When the column 12 is to be erected on a slope, FIG.
As shown in the figure, the support 12 to which the core 16 is attached stands vertically on the inclined installation surface F. In this case, the core 16 does not contact the installation surface F with a wide flat surface, but contacts the installation surface F at the fulcrum P at the center in the left-right direction. Can be set up vertically without any trouble. Next, the base plate body 14 is placed on the core 16 in the same manner as described above, but the base plate body 14 can freely slide and rotate in the left-right direction with respect to the core 16, so that the base plate body 14 follows the gradient of the installation surface F. It is placed on the installation surface F in an inclined state. Therefore, the base plate body 14 can press and fix the core 16 at an arbitrary rotation angle with respect to the core 16. In this way, the column 12 can be erected on the installation surface F having an arbitrary slope by assembling at the site.

The core 16 and the base plate body 14
Means flat lower-spreading tapered surfaces 13b, 16 provided before and after
Since they are in contact with each other by b, the column 12 can be reliably prevented from falling in the front-rear direction. Road fences must not fall back and forth when people lean on them,
As described above, since the tapered surfaces 13b and 16b reliably prevent the vehicle from falling in the front-rear direction, there is no problem in applying the present invention as a road fence. In addition, the front and rear tapered surfaces 13
When the core 16 is pressed against the installation surface F with the base plate body 14 by tightening the nut 28 screwed to the anchor bolt 27, the right angle of the column 12 to the installation surface F in the front-rear direction is correctly adjusted. It acts to keep.

In the embodiment, the fulcrum P is located below the lower surface of the base plate main body 14. However, if the height of the fulcrum P near the installation surface F is slightly increased, the fulcrum P itself of the core 16 can be formed. The base plate 14 does not need to be positioned below the lower surface. In short, the base plate body 1
It is sufficient that there is a gap between the lower surface of the base plate 4 and the installation surface F to such an extent that the pressing force of the anchor bolt 27 and the nut 28 against the base plate body 14 sufficiently acts on the core 16. In the embodiment, the fixing means by the leaf spring 20 is adopted as the supporting means for fixing the support 12 to the core 16, but the invention is not limited to this. The cross-sectional shape of the column 12 is not limited to a round pipe, but may be any shape such as a square pipe. In that case, the cross-sectional shape of the fitting portion 15a of the support mounting portion 15 is adjusted to the cross-sectional shape of the support. Further, as the material used for the base plate body 14 and the core 16, an aluminum alloy, cast iron, or other materials can be used. Further, the present invention is preferably applied as a base plate for a fence post, but is not limited to a fence post and can be applied to various supports. Further, the present invention has a structure capable of coping with a sloped land. However, the present invention is naturally applicable to a case where only a plain ground which does not include a sloped land is erected.

[0019]

According to the present invention, the base plate body can be freely slidably rotated in the left-right direction with respect to the core, and the core can be pressed and fixed at an arbitrary rotation angle with respect to the core. Supports can be erected on slopes by assembling on site. As described above, welding is not required, and it is possible to cope with any slope by assembling on site.
The base plate can be manufactured in advance, and the conventional complexity of manufacturing according to the road gradient each time is eliminated, and the cost is reduced. In addition, since it can be manufactured in advance, the period from receiving an order to manufacturing and delivery can be shortened.

[Brief description of the drawings]

FIG. 1 is a front view of a state in which a support is fixed to a support base plate according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a sectional view taken along the line CC of FIG. 2;

FIG. 5 is a plan view of the leaf spring described above.

FIG. 6 is a sectional view taken along line DD of FIG. 2;

FIG. 7 is a rear view of the base plate.

FIG. 8 is a view corresponding to FIG. 3 in a case where a support column is erected on an inclined ground using the above-described base plate.

FIG. 9 shows a conventional example and is a front view of a column with a base plate.

FIG. 10 is a front view of the case where the column with the base plate of FIG. 9 is erected on a slope.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Support base plate 12 Support 13 Hollow part 13a Spherical inner surface 13b Lower spreading taper surface 13c Upper surface side opening 14 Base plate main body 15 Support mounting portion 16 Core 16a Spherical outer surface 16b Lower spreading taper surface 16c Bolt insertion hole 17 Support means for pillar Reference Signs List 18 fixing bolt 19 fixing means 20 leaf spring 25 wall 26 anchor hole 27 anchor bolt 28 nut P fulcrum F base plate installation surface

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04H 17/22 E04F 11/18

Claims (4)

(57) [Claims] 1. A base plate main body having a downwardly extending hollow portion opened on an upper surface side and a lower surface side, and the hollow portion of the base plate main body is slidably rotatable in the left-right direction and restrained from rotating in the front-rear direction. As well as
A core having a column mounting portion at an upper portion protruding from the opening on the upper surface side, and having a fulcrum portion at the center of the lower end surface in the left-right direction and serving as a fulcrum at the time of the sliding rotation by contacting the base plate installation surface; And a column fixing means for fixing the column to the column mounting portion. 2. The support base plate according to claim 1, wherein a fulcrum of the core is located below a lower surface of the base plate main body. 3. The hollow portion of the base plate main body has a spherical inner surface, and has flat downward expanding tapered surfaces on both sides in the front-rear direction orthogonal to the core sliding rotation direction, and the core has the spherical shape. 2. The support base plate according to claim 1, wherein the support base plate has an inner surface and an outer surface that contacts the downwardly expanding tapered surface. 4. The supporting column fixing means comprises a fixing bolt inserted into a bolt insertion hole penetrating vertically through the center of the core and a fixing fixture fixed by the fixing bolt. 2. The support base plate according to claim 1, further comprising a leaf spring having a contour whose peripheral edge is fitted tightly to the inner surface of the support.