Connecting device for signs and other support posts, repair method using the connecting device, and repaired support post.

Abstract

This invention provides a connecting device that allows for the installation of signposts through a simple process, and the device itself can be manufactured easily and inexpensively. Furthermore, it also provides a repair method using such a connecting device. [Solution] The connecting device 100 according to the present invention comprises a disc portion 10 and a cylindrical portion 20 that is attached so as to penetrate the disc portion 10, and is characterized by having an upper through hole 23 with horizontally penetrating screw grooves formed in the cylinder 21 above the disc portion 10, and a plurality of through holes 22a provided in the cylinder 22 below the disc portion 10.

Description

Technical Field

[0001] The present invention relates to a connecting device for repairing a support column when the support column such as a sign is bent, a repair method using the connecting device, and a repaired support column.

Background Art

[0002] Support columns of roadside facilities such as road signs and guardrails may be bent due to vehicle collisions or deteriorated due to aging. In such a case, in order to replace the support column, it is necessary to dig up or demolish the foundation part that supports the support column, remove the support column, and then install a new support column. Further, when newly installing a support column, since it is necessary to re-cast the foundation, there has been a problem that the construction period becomes long and the cost also increases.

[0003] In order to solve such problems, the present inventor has proposed a connecting device including a fixing member that can be inserted into an existing sign post and a new sign post, and a positioning member that regulates the insertion length of the fixing member (Patent Document 1). The fixing member is attached so as to project in opposite directions along the axial direction from the positioning member, and is formed so as to press the inner surfaces of the existing sign post and the new sign post outward. Further, the fixing member has a shape in which the cross section spreads radially in a plurality of directions from the center, and is composed of a plurality of plate-like members, and is arranged while maintaining a gap between them.

[0004] By using this connecting device, an effect can be obtained that the sign post can be repaired and installed in a simpler process compared with the conventional method.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The present invention provides a connecting device that allows for the installation of support posts for signs and the like using a simple process, and that can be manufactured easily and at low cost. Furthermore, it aims to provide a repair method using this connecting device. [Means for solving the problem]

[0007] To solve the above problems, the present invention employs the following means.

[0008] The connecting device according to the present invention is The disc part, It consists of a cylindrical portion that is attached so as to penetrate the aforementioned disc portion, An upper through-hole with a horizontally penetrating screw groove formed in the cylinder above the aforementioned disc portion, Multiple through holes are provided in the cylinder below the aforementioned disc portion, It is characterized by having the following features.

[0009] According to the connecting device of the present invention, the support column can be easily and quickly repaired by inserting the lower cylinder into the existing support column and attaching and fixing the new support column to this connecting device.

[0010] Furthermore, the connecting device according to the present invention may be characterized by comprising a set screw and a bolt screw that can be screwed into the upper through hole.

[0011] By adopting this configuration, the position can be temporarily fixed with set screws, and then permanently fixed with bolt screws.

[0012] Furthermore, the repair method using the connecting device according to the present invention is The connecting device comprises a disc portion and a cylindrical portion attached so as to penetrate the disc portion, and has an upper through-hole with a horizontally penetrating screw groove formed in the cylinder above the disc portion, and a plurality of through-holes provided in the cylinder below the disc portion, and is characterized by having the following steps. (1) Cutting process of cutting the base of the existing support column that requires repair. (2) Injection process: Injecting mortar into the interior of the cut existing support column. (3) Insertion step of inserting the lower cylindrical part of the connecting device into the cut existing support column. (4) Drilling process to drill bolt holes in the new support column at positions corresponding to the upper through holes. (5) Installation process: attaching the drilled support post to the upper cylinder of the connecting device. (6) Temporary fixing process: The bolts are temporarily fixed using set screws through the bolt holes and the upper through-holes at the front, into the threaded grooves of the upper through-holes at the back. (7) Final fixing process: The bolts are threaded through the bolt holes in the upper through-holes at the front to secure the bolts.

[0013] Furthermore, the repaired support column according to the present invention is The existing support post was cut near the base, The connecting device according to claim 1, wherein the lower cylinder is inserted into the existing support column, An installation support column fitted into the cylindrical part above the aforementioned connecting device, The aforementioned connecting device and the mounting support column are characterized by being fixed together with set screws and bolt screws. [Brief explanation of the drawing]

[0014] [Figure 1] Figure 1 shows the front, left side, and top views of the connecting device 100 according to the embodiment, as well as the rear, right tail side, and rear view. [Figure 2] Figure 2 shows an example of a support column that requires repair according to the embodiment. [Figure 3] Figure 3 is a schematic diagram showing the repair process of the connecting device 100 according to the embodiment. [Figure 4] Figure 4 is a schematic diagram showing the repair process of the connecting device 100 according to the embodiment. [Figure 5] Figure 5 is a schematic diagram showing the repair process of the connecting device 100 according to the embodiment. [Figure 6]FIG. 6 is a cross-sectional view of the support column 91 showing the fixing method of the connecting device 100 according to the embodiment. [Figure 7] FIG. 7 is a schematic view showing the repair process of the connecting device 100 according to the embodiment.

Embodiments for Carrying Out the Invention

[0015] Hereinafter, with reference to the drawings, the connecting device 100 for the support column of the sign etc. according to the embodiment, the repair method using the connecting device 100, and the repaired support column 90 will be described in detail. Note that the embodiments and drawings described below are examples of a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and can be appropriately changed without departing from the gist of the present invention. The corresponding components in each figure are denoted by the same or similar reference numerals.

[0016] First, the connecting device 100 of the present invention will be described. The connecting device 100 according to the present invention is a device used when repair is required when a support column 90 installed as a roadside facility such as a sign or a guardrail is bent due to a collision with a vehicle or the like or corroded due to aging.

[0017] As shown in FIG. 1, the connecting device 100 according to the present invention mainly comprises a disc portion 10 and a cylindrical portion 20 attached so as to penetrate the disc portion 10.

[0018] The disc portion 10 is made of a donut-shaped iron plate and has a diameter larger than the diameter of the support column 90 to be repaired, and the inserted support column 90 is a member for supporting on the upper surface of the disc portion 10.

[0019] As shown in Figure 1, the cylindrical section 20 is formed in the shape of a hollow pipe and consists of an upper cylinder 21 formed above the disc section 10 and a lower cylinder 22 formed below the disc section 10. The cylindrical section 20 has a diameter that is 1 mm to 10 mm shorter than the inner diameter of the support column 90. As shown in Figure 6, the upper cylinder 21 is provided with at least two sets of two upper through holes 23 that penetrate horizontally. The upper through holes 23 have screw threads cut into their inner surfaces. The lower cylinder 22 is also provided with multiple through holes 22a. The number and size of the through holes 22a in the lower cylinder 22 are not particularly limited and can be selected as appropriate.

[0020] The connecting device 100 manufactured as described above is used as follows. In the following explanation, we will use the example of a signpost 90 fixed to the foundation concrete 80 that has been bent, but any pipe-shaped support post, such as lighting posts, convex mirror posts, or guardrail posts, which are installed as road facilities, can be repaired in the same way.

[0021] (1) Cutting process The cutting process involves cutting off the portion of the existing support post that is bent or corroded and is exposed in the ground. First, as shown in Figure 2, the bent existing support post 90 is cut near its base. The area near the base generally refers to within 10 cm of the ground. At this time, if necessary, the surface of the cut opening is chamfered, and if the circular shape of the opening is deformed, a prescribed correction jig is used to correct it to a circular shape.

[0022] (2) Injection process The injection process involves injecting mortar to fix the connecting device 100, which will be inserted into the existing support column. Mortar (not shown) is injected into the cut existing support column 90 embedded in the foundation. At this time, the mortar is injected in an amount that does not overflow, as the connecting device 100 will be inserted into the existing support column 90 in a later step.

[0023] (3) Insertion process The insertion process involves inserting the connecting device 100 into the existing support column into which mortar has been injected. As shown in Figure 3, the lower cylindrical part 22 of the connecting device 100 is inserted into the existing support column 90. The inserted connecting device 100 is placed in the mortar, and since the lower cylindrical part 22 has multiple through holes 22a, the mortar fills these through holes 22a and hardens, preventing the connecting device 100 from coming out of the existing support column 90.

[0024] (4)Drilling process The drilling process involves drilling an upper through-hole 23 for the connecting device and a hole for fixing it with a bolt screw 62 into a new mounting support column. A new mounting support column 91 is prepared, and a bolt hole 91a, as shown in Figure 4, is drilled into this mounting support column 91. The bolt hole 91a is drilled in a position corresponding to the upper through-hole 23 so that it is in the same position as the upper through-hole 23 when the mounting support column 91 is placed over the connecting device 100. Preferably, the bolt hole 91a has a diameter slightly larger than the upper through-hole 23 so that the set screw 61 and bolt screw 62, which will be described later, can be inserted without interference.

[0025] (5) Installation process The installation process involves placing the installation support column 91 over the connecting device 100 that is attached to the existing support column. As shown in Figure 4, the installation support column 91, which has bolt holes 91a drilled in it, is placed over the existing support column 91 to erect it. In this state, the diameter of the upper cylinder 21 is shorter than the inner diameter of the installation support column 91, so there is some wobbling.

[0026] (6) Temporary fixing process The temporary fixing process involves temporarily fixing the loose mounting column 91 to the upper cylinder 21. Temporary fixing is performed using a set screw 61. As shown in Figure 5, the set screw 61 is a headless screw primarily used to fix rotating or sliding parts to an axis, and is sometimes called a "grub screw." First, the mounting column 91 is oriented so that the center of the bolt hole 91a and the upper through hole 23a on the same side coincide. With both holes aligned, the set screw 61 is inserted through the bolt hole 91a and the front upper through hole 23a, and then tightened into the rear upper through hole 23b with a hex wrench or the like to temporarily fix it in place. In other words, by pressing the mounting column 91 with the tip of the set screw 61, the mounting column 91 and the connecting device 100 are temporarily fixed so that they do not shift relative to each other.

[0027] (7) Main fixing process In this fixing process, the bolts 62 are securely fastened to the bolt holes 91a and the upper through-hole 23a on the front side with both holes aligned. This allows the support column to be fixed in two places at opposing positions by the set screw 61 and the bolt 62, effectively preventing rattling and ensuring that the support column 91 does not come loose.

[0028] As described above, the repair is completed by reattaching the sign to the repaired support column 90, as shown in Figure 7. Thus, with the repair method using the connecting device 100 according to the present invention, it is only necessary to cut the support column 90 that has been extended above ground, and there is no need to destroy the foundation concrete 80. Furthermore, when fixing the reinstalled support column 90, it can be fixed quickly as it only requires fixing with bolts and screws. Moreover, the connecting device 100 itself can be manufactured by welding a ring-shaped plate to a cylinder, so it can be manufactured easily and inexpensively.

[0029] In the embodiment described above, the base of the support column 91 was cut when repairing it, but it does not necessarily have to be cut at the base; it may be cut leaving a certain length, for example, about 10 cm. Preferably, the lower cylindrical column 22 is positioned to be installed within the foundation concrete 80.

[0030] It goes without saying that the present invention is not limited in any way to the embodiments described above, and can be implemented in various forms as long as they fall within the technical scope of the present invention. [Industrial applicability]

[0031] As shown in the embodiments described above, the device and method for repairing damaged support posts of signs and the like can be used industrially. [Explanation of Symbols]

[0032] 10…Disc section, 100…Connecting device, 20…Cylindrical section, 21…Cylindrical section, 22…Cylindrical section, 22a…Through hole, 23…Upper through hole, 23a…Upper through hole, 23b…Upper through hole, 61…Set screw, 62…Bolt screw, 80…Foundation concrete, 90…Support column, 91…Installation support column, 91a…Bolt hole

Claims

1. The disc part, It consists of a cylindrical portion that is attached so as to penetrate the aforementioned disc portion, An upper through-hole with a horizontally penetrating screw groove formed in the cylinder above the aforementioned disc portion, Multiple through holes are provided in the cylinder below the aforementioned disc portion, A connecting device characterized by having the following features.

2. The connecting device according to claim 1, characterized in that it comprises a set screw that can be screwed into the upper through hole and a bolt screw.

3. A method for repairing an existing support column, characterized by using a connecting device comprising a disc portion and a cylindrical portion attached so as to penetrate the disc portion, the device having an upper through-hole with a horizontally penetrating screw groove formed in the cylinder above the disc portion and a plurality of through-holes provided in the cylinder below the disc portion, and comprising the following steps. (1) Cutting process of cutting the base of the existing support column that requires repair. (2) Injection process of injecting mortar into the interior of the cut existing support column (3) Insertion step of inserting the lower cylindrical part of the connecting device into the cut existing support column. (4) Drilling process to drill bolt holes in the new support column at positions corresponding to the upper through holes. (5) Installation process of attaching the drilled mounting support to the upper cylinder of the connecting device. (6) Temporary fixing process: The bolts are temporarily fixed to the threaded groove of the upper through-hole at the back through-hole through the bolt holes and the upper through-hole at the front using set screws. (7) Final fixing process: The bolts are fixed in place using the bolts threaded through the upper through-holes at the front via the bolt holes.

4. The existing support post was cut near the base, The connecting device according to claim 1, wherein the lower cylinder is inserted into the existing support column, An installation support column fitted into the cylindrical part above the aforementioned connecting device, A repaired support column characterized in that the connecting device and the support column are fixed together with set screws and bolts.

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