JP2017206900A - Columnar body fixture, and fixing structure for columnar body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a columnar body fixture that facilitates installation work for a street lamp, a signpost, a signboard and other items that have a columnar body, at the same time enhancing aseismic resistance and wind resistance.SOLUTION: A columnar body fixture 1 is for fixing a columnar body 23 to a foundation hole 21, the columnar body being installed in the ground by casting concrete between the foundation hole 21 drilled in the ground and the columnar body. The columnar body fixture includes a base member 2 fitted on the columnar body 23, a rod-like first rod member 3 having a base end fitted on the base member 2, a rod-like second rod member 4 fitted on the first rod member 3 and moving forward/backward in an outward direction of a tip of the first rod member 3, a movement restricting member 5 fitted on the second rod member 4 and restricting movement of the second rod member 4 toward the base member 2 side, and a flat plate-like contacting member 6 fitted on a tip of the second rod member 4 and contacting an inner surface of the foundation hole 21.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a columnar body fixture for fixing a columnar body placed on the ground by placing concrete between the foundation hole opened in the ground and a columnar body fixing structure. It is about.

  As shown in FIG. 3, the installation of street lamps, signs, signboards, etc. having a long columnar body 104 forms a basic hole 102 by inserting a cylindrical spiral steel pipe 101 into a hole opened in the ground 100, and a crane A streetlight or the like installed at 103 is suspended and the lower end of the columnar body 104 is inserted into the foundation hole 102. Next, a plurality of logs 105 are attached with a tower so as to stand on top of the columnar body 104, and the columnar body 104 is held vertically by the attached log 105. In this state, concrete 106 is placed in the foundation hole 102, and after the concrete 106 is hardened, the log 105 is removed, whereby a street lamp or the like is installed on the ground.

  However, in the conventional technique as described above, there is a problem that it takes time to vertically hold the columnar body 104 by the log 105, to remove the log 105, and the construction period becomes long. Moreover, after installing a streetlight etc., the upper side of the foundation part embed | buried under the foundation concrete of the columnar body 104 may vibrate with a wind etc., and a crack may enter into foundation concrete. And since a concrete concrete is cracked, and earthquake resistance and wind resistance are lowered, there is a risk that streetlights and the like may fall down during an earthquake or typhoon.

  Accordingly, in view of the above circumstances, the present invention facilitates installation work of streetlights, signs, signboards, and the like having columnar bodies, and a columnar body fixture that can improve earthquake resistance and wind resistance, and a columnar body fixing structure The issue is to provide

  In order to solve the above-mentioned problems, the columnar body fixing tool according to the present invention is the following: “Concrete is placed between the foundation hole opened in the ground and the columnar body installed in the ground is disposed on the foundation hole. A base member attached to the columnar member, a rod-shaped first hook member having a base end attached to the base member, and a distal end of the first hook member A rod-shaped second hook member attached to the first hook member so as to advance and retreat outside, and the base member of the second hook member attached to the first hook member or the second hook member A movement restricting member that restricts movement to the side, and a flat contact member that is attached to the tip of the second flange member and contacts the inner peripheral surface of the foundation hole " It is.

  Here, the “foundation hole” may be left open in the ground, or may be inside a cylindrical member embedded in the ground. Further, examples of the shape of the “columnar body” include “columnar shape”, “cylindrical shape”, “polygonal columnar shape”, and “polygonal cylindrical shape”. Examples of the “columnar body” include “streetlight”, “signpost”, and “signboard”.

  Examples of “attached to the columnar body” include “by pinching the columnar body”, “by bolts and screws screwed into the columnar body”, and the like. The “base member” includes a “semi-annular (semi-annular) main body portion extending along the outer peripheral surface of the columnar body, and a flange portion extending outward from both ends of the main body portion. Can be exemplified, “what extends along a part of the outer peripheral surface of the columnar body”, and “a flat plate when the columnar body is polygonal”.

  Furthermore, the “first rod member” and the “second rod member” include “columnar rod shape”, “cylindrical rod shape”, “square column rod shape”, “square tube rod shape”, “cross-section U-shape”, “cross-section C-shape”. ”,“ L-shaped section ”, and“ H-shaped section ”. In addition, “attached so as to advance and retreat” means that “advancing and retreating by inserting a columnar or cylindrical second scissors member into the cylindrical first scissors member”, “columnar Or the thing which advances and retracts when the cylindrical 1st collar member is inserted in the inside of a cylindrical 2nd collar member can be illustrated. Further, only one first saddle member may be attached to the base member, or a plurality of first saddle members may be attached at intervals in the circumferential direction of the columnar body.

  Further, as the “movement restricting member”, “the nut screwed with the male screw formed on the outer periphery of the first hook member or the second hook member”, “the outer periphery of the first hook member or the second hook member” "E-ring inserted into ring groove or male screw formed in", "Split pin, beta pin, spring pin inserted in through hole penetrating first or second flange member" Can be exemplified.

  In addition, as the “contact member”, “the one extending in an arc shape”, “the one extending in a straight line”, “the one in a block shape”, “the one in a disk shape”, “the one in a polygonal plate shape” Can be exemplified.

  The columnar fixture of this configuration can be used, for example, as follows when a streetlight, a sign, a signboard, or the like having a long columnar body is installed on the ground. Here, the case where a columnar body is installed using four columnar body fixtures each including one set of the first collar member, the second collar member, the movement restricting member, and the contact member will be described. . First, a streetlight or the like having a columnar body is lifted with a crane, and the lower end of the columnar body is inserted into the foundation hole opened in the ground, and the lower end of the columnar body is brought into contact with the approximate center of the bottom of the foundation hole. Make contact.

  Subsequently, the base members of the four columnar body fixtures are attached to portions below the ground surface of the columnar body in a state where the columnar body is substantially vertical by the crane. At this time, each columnar body is extended such that each first flange member (second flange member) of each columnar body fixture extends outwardly with an angle of 90 degrees with respect to the circumferential direction of the columnar body. The base member of the fixture is attached to the columnar body. Then, each 2nd collar member attached to each 1st collar member is extended outward, and the contact member of a front-end | tip is made to contact | abut to the inner surface of a foundation hole, respectively. And in each columnar body fixing tool, after adjusting the amount of outward movement of the second rod member with respect to the first rod member so that the columnar body extends vertically, the second rod member is moved by the movement restricting member respectively. Is restricted from moving toward the base member. As a result, the columnar body is fixed to the base hole.

  In this state, the crane is removed from the columnar body, and concrete is placed up to the upper end of the foundation hole, and the four columnar body fixing tools are buried in the concrete. Thereafter, the concrete is hardened, so that the columnar body is installed on the ground.

  In the above, an example in which four columnar body fixtures including a set of the first rod member and the like are used is shown, but three or five or more may be used. In addition, a plurality of first brim members and the like may be provided in one columnar body fixture. Regardless of which columnar body fixture is used, the plurality of first flange members are spaced at regular intervals with respect to the circumferential direction of the columnar body (at equal angles with respect to the center of the columnar body) It is desirable to attach to the columnar body.

  Thus, according to the columnar body fixture of this configuration, by adjusting the outward movement amount of the second rod member with respect to the first rod member, compared to the conventional case where logs are used, The body's vertical level can be easily adjusted. In addition, by attaching the columnar body fixture to the part below the surface of the columnar body (the part that becomes the inside of the foundation hole), it can be buried in the concrete (base concrete). When buried in the foundation concrete, it is possible to save the trouble of removing the columnar body fixture from the columnar body. For this reason, it is possible to facilitate installation work of street lamps, signs, signboards, and the like having columnar bodies.

  In addition, when the columnar body fixture is buried in the foundation concrete, the lower part of the columnar body is fixed by the foundation concrete and the columnar body fixture, and the columnar body fixture reinforces the foundation concrete. Therefore, even if the part above the foundation concrete of the columnar body vibrates due to wind, etc., the foundation concrete is difficult to crack, and the installed columnar body can be improved in earthquake resistance and wind resistance. It is possible to make it difficult for a streetlight or the like having a columnar body to fall down.

  Further, in addition to the above configuration, the columnar body fixing tool according to the present invention may be “the first rod member extends in a cylindrical rod shape, and the second rod member is larger than the inner diameter of the first rod member. A cylindrical rod or cylindrical rod having a small outer diameter is formed with a male screw on the outer periphery, and a part thereof is inserted into the first rod member, and the movement restricting member is screwed onto the second rod member. It can also be a "combined nut".

  According to this configuration, the second hook member can be attached to advance and retract outward from the tip of the first hook member simply by inserting the second hook member into the cylinder of the first hook member from the tip side. It is possible to reduce the labor required for assembling the columnar body fixture. Moreover, since the movement restricting member is a nut screwed to the second hook member on which the male screw is formed, the second restricting member can be moved outward only by rotating the movement restricting member in an appropriate direction. The amount of advance and retreat can be adjusted steplessly. Therefore, when installing the columnar body on the ground, the vertical level of the columnar body can be easily adjusted, and the installation work of the columnar body can be facilitated.

  Further, the fixing structure of the columnar body according to the present invention is “a base hole opened in the ground, a columnar body inserted into the base hole, and a columnar body fixing the columnar body to the base hole. The columnar body fixing device includes a base member attached to the columnar body, a rod-shaped first hook member having a base end attached to the base member, and the first hook member A rod-like second scissors member attached to the first scissors member so as to advance and retreat outside the tip of the first scissors member, and the second scissors member attached to the first scissors member or the second scissors member A movement restricting member for restricting movement of the base member toward the base member, and a flat contact member attached to the tip of the second flange member, and the base member is attached to the columnar body In addition, the movement in the state where the contact member is in contact with the inner peripheral surface of the foundation hole Braking member moves is to restrict that "things into the base member side of the second Sao member.

  With this, by placing concrete between the foundation hole and the columnar body so that the columnar fixing tool is buried while the columnar body is fixed to the foundation hole by the columnar body fixing tool, A columnar body can be installed, and the same effects as described above can be achieved.

  As described above, as an effect of the present invention, there is provided a columnar body fixture and a columnar body fixing structure capable of facilitating installation work of streetlights, signs, signboards, etc. having columnar bodies, and having improved earthquake resistance and wind resistance. Can be provided.

It is a top view which shows the columnar body fixing tool which is one Embodiment of this invention. It is explanatory drawing explaining installation of the columnar body to the ground using the columnar body fixing tool of FIG. It is explanatory drawing explaining installation of the columnar body to the conventional ground.

  A columnar fixture 1 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2. The columnar body fixture 1 of the present embodiment fixes a columnar body 23 installed in the ground 20 by placing concrete 22 between the foundation hole 21 opened in the ground 20 and fixed to the foundation hole 21. Is for. Here, the columnar body 23 is provided in a streetlight, a sign, a signboard, or the like (hereinafter simply referred to as a streetlight or the like).

  The columnar body fixture 1 includes a base member 2 attached to the columnar body 23, a rod-shaped first flange member 3 whose base end is attached to the base member 2, and advancing and retracting outside the distal end of the first flange member 3. The rod-shaped second rod member 4 attached to the first rod member 3 and the second rod member 4 are attached so as to restrict the movement of the second rod member 4 to the base member 2 side. And a flat contact member 6 that is attached to the tip of the second flange member 4 and that contacts the inner surface of the foundation hole 21.

  The base member 2 includes a semi-annular main body portion 2a, flange portions 2b extending outward from both ends of the main body portion 2a, and assembly holes 2c penetrating each flange portion 2b. The main body 2 a extends in a semicircular shape so as to follow the outer peripheral surface of the columnar body 23. The pair of flange portions 2b are parallel to a line passing through the center of the semicircular ring of the main portion 2a and extend in directions opposite to each other. In this embodiment, the base member 2 is formed by curving a strip-shaped iron plate extending with a certain width.

  The first flange member 3 extends in a cylindrical rod shape. Two first flange members 3 are attached to the outer surface of the main portion 2a of the base member 2 with a gap therebetween. More specifically, the two first flange members 3 are circumferentially directed from one end of the main body 2a to the opposite end with respect to the center of the ring of the main body 2a extending in a semicircular shape. In the direction, it is attached to a 45 degree part and a 135 degree part, respectively. The two first flange members 3 are attached so as to extend radially from the center of the ring of the main body 2a. In the present embodiment, the first brim member 3 is made of an iron pipe and is welded to the base member 2.

  The second rod member 4 has a cylindrical rod shape having an outer diameter smaller than the inner diameter of the first rod member 3 and has a male screw formed on the outer periphery. The second hook member 4 is inserted into the first hook member 3 from the tip side with respect to each of the two first hook members 3. In this embodiment, the 2nd collar member 4 is a dimensioned bolt in which the external thread is formed over the full length.

  The movement restricting member 5 is a nut screwed into the male screw of the second flange member 4.

  The contact member 6 extends in a circular arc having a radius larger than that of the main portion 2a of the base member 2 and a center angle smaller than 45 degrees, and the tip of the second flange member 4 is located at the center in the circumferential direction of the inner peripheral surface. Installed. In the present embodiment, the contact member 6 is formed in a circular arc having a radius slightly smaller than the radius of the inner periphery of the spiral steel pipe 24 by a strip-shaped iron plate having the same width as the base member 2. Moreover, in this embodiment, the attachment nut 6a is welded to the circumferential direction center of the inner peripheral surface of the contact member 6, and the contact member is formed by screwing the tip of the second flange member 4 to the attachment nut 6a. 6 is attached to the second saddle member 4.

  Next, the fixing structure of the columnar body 23 using the columnar body fixture 1 of this embodiment will be described together with the installation of the columnar body 23 on the ground 20. First, the spiral steel pipe 24 is inserted into the hole drilled in the ground 20 to form the base hole 21. In the present embodiment, the spiral steel pipe 24 has an outer diameter of 500 mm to 600 mm and a length (depth of the foundation hole 21) of about 2000 mm. Next, a disc-shaped concrete bottom plate 25 having an outer diameter slightly smaller than the inner diameter of the spiral steel pipe 24 and a hole in the center is placed on the bottom of the foundation hole 21. Then, a streetlight or the like having the columnar body 23 is lifted by the crane 26, and the lower end of the columnar body 23 is inserted into the base hole 21, and abuts on the approximate center of the bottom of the base hole 21 through the hole of the bottom plate 25. Let

  Subsequently, the base member 2 of the pair of columnar body fixtures 1 is attached to a portion 50 mm to 100 mm below the ground surface of the columnar body 23 in a state where the columnar body 23 is substantially vertical by the crane 26. Specifically, in a state where the inner peripheral side of the main body 2a of the base member 2 is directed to the columnar body 23, the pair of columnar body fixtures 1 are arranged symmetrically with the columnar body 23 therebetween in plan view. And each main-body part 2a is made to contact | abut to the outer peripheral surface of the columnar body 23, and the assembly hole 2c which has penetrated each flange part 2b is made to correspond. In this state, the tip of the mounting bolt 10 is inserted into the assembly hole 2c from the outside of the flange portion 2b of one columnar body fixture 1, and the flange portion 2b of the flange portion 2b passes through the assembly hole 2c of the columnar body fixture 1 on the opposite side. Project outward. Thereafter, the mounting nut 11 is screwed and tightened to the tip of the mounting bolt 10, whereby the pair of base members 2 sandwich the columnar body 23 and the pair of columnar body fixtures 1 are attached to the columnar body 23.

  By attaching the pair of columnar body fixtures 1 to the columnar body 23, the four first flange members 3 extend radially outward at an angular interval of 90 degrees with respect to the central axis of the columnar body 23. It becomes. Thereafter, each second collar member 4 attached to each first collar member 3 is extended outward, and the contact member 6 at the tip is brought into contact with the inner surface of the foundation hole 21. Then, after adjusting the amount of outward movement of the second rod member 4 with respect to the first rod member 3 so that the columnar body 23 extends vertically, the movement restricting member 5 made of a nut is rotated in each case to adjust the amount of movement. The first base member 3 is brought into contact with the tip. Thereby, the movement of each second flange member 4 to the base member 2 side is restricted, and the columnar body 23 is fixed to the base hole 21.

  In addition, when adjusting the vertical level of the columnar body 23, in the pair of first rod members 3 extending on the same line with the columnar body 23 interposed therebetween, the amount of outward movement of the respective second rod members 4 If the adjustments are made simultaneously, the vertical level can be easily adjusted.

  Further, one of the four first flange members 3 in the pair of columnar body fixtures 1 is a straight line passing through the center of gravity of a street lamp or the like from the center of the columnar body 23 (center of the ring of the main body 2a) in plan view The pair of columnar body fixtures 1 are attached to the columnar body 23 in a state where they are matched with each other. In other words, when the columnar body 23 is made vertical, the columnar body fixture 1 is attached to the columnar body 23 so that one of the first flange members 3 extends in a direction in which the columnar body 23 easily falls down. First, the abutting member 6 attached to the first flange member 3 is brought into contact with the inner surface of the base hole 21 and the movement restricting member 5 moves the second flange member 4 toward the base member 2 side. May be regulated. Thereby, the columnar body 23 is less likely to fall down, and the vertical level can be easily adjusted.

  As described above, when the columnar body 23 is fixed to the foundation hole 21 by the pair of columnar body fixtures 1, the crane 26 is removed from the columnar body 23, and the concrete 22 is driven to the upper end of the foundation hole 21. The columnar body fixture 1 is buried in the concrete 22. Thereafter, the concrete 22 is hardened, so that a columnar body 23 (a streetlight or the like) is installed on the ground 20.

  As described above, according to the columnar body fixture 1 of the present embodiment, the second hook member 4 is simply inserted into the first hook member 3 from the distal end side into the first hook member 3 by inserting the second hook member 4 into the first hook member 4. Since it can attach so that it may advance and retract outward from the front-end | tip of the member 3, the effort concerning the assembly of the columnar body fixing tool 1 can be reduced. Further, since the movement restricting member 5 is a nut screwed to the second collar member 4 on which the male screw is formed, the rotation restricting member 5 can be simply rotated in an appropriate direction to rotate the second collar member 4. The amount of outward movement can be adjusted steplessly. Therefore, when installing the columnar body 23 on the ground 20, the vertical level of the columnar body 23 can be easily adjusted as compared with the conventional case where logs are used. ) Can be facilitated.

  Moreover, in this embodiment, a pair of columnar body fixing tool 1 is attached to the site | part (site | part used as the inside of the foundation hole 21) below the ground surface in the columnar body 23, and it is made to bury in the concrete 22 (foundation concrete). Therefore, the trouble of removing the columnar body fixture 1 from the columnar body 23 can be saved, and the installation work of a streetlight or the like having the columnar body 23 can be facilitated.

  Furthermore, since the pair of columnar body fixtures 1 are buried in the foundation concrete, the lower portion of the columnar body 23 is fixed by the foundation concrete and the pair of columnar body fixtures 1, The columnar body fixture 1 reinforces the foundation concrete. Therefore, even if a portion above the foundation concrete of the columnar body 23 is vibrated by wind or the like, the foundation concrete is hardly cracked, and the installed columnar body 23 (streetlight, etc.) is improved in earthquake resistance and wind resistance. It is possible to make it difficult for a streetlight or the like having the columnar body 23 to fall down during an earthquake or typhoon.

  In addition, since the columnar body 23 is sandwiched between the respective base members 2 and attached to the columnar body 23, there is no need to form a mounting hole or weld a bolt to the columnar body 23. Work on the installation site can be reduced.

  Although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the above-described embodiments, and various improvements and design changes can be made without departing from the scope of the present invention. It is.

  For example, in the above embodiment, the first rod member 3 has a cylindrical rod shape and the second rod member 4 has a columnar rod shape. However, the present invention is not limited to this. The member may be formed in a cylindrical bar shape, and the second rod member may be formed in a cylindrical bar shape. Alternatively, in addition to the cylindrical rod shape and the cylindrical rod shape, the first rod member and the second rod member have a prismatic rod shape, a square rod shape, a U-shaped cross section, a C-shaped cross section, an L-shaped cross section, and an H-shaped cross section. May be combined as appropriate.

  In the above embodiment, a male screw is formed on the outer periphery of the second hook member, and the movement restricting member 5 is a nut screwed into the male screw of the second hook member 4. However, the present invention is not limited to this, and a plurality of ring grooves are formed in the outer periphery of the second flange member at intervals in the longitudinal direction, and the movement restricting member is an E-ring inserted into the ring groove. good. Alternatively, a plurality of through holes are formed in the second hook member or the first hook member at intervals in the longitudinal direction, and the movement restriction member is inserted into the through hole, such as a split pin, a beta pin, a spring pin, or the like. You may do it.

  Furthermore, although the arc-shaped contact member 6 is shown in the above embodiment, the present invention is not limited to this, but is linearly extended, block-shaped, disk-shaped, polygonal plate-shaped It is good also as contact members, such as a form. Moreover, although the thing extended in the horizontal direction so that the inner periphery of the base hole 21 was followed as the contact member 6 was shown, it is not limited to this, The thing extended in the up-down direction (or downward) It is also good. This makes it difficult for the contact member to rotate around the axis of the second flange member. Therefore, when the columnar body fixture 1 is attached to the columnar body 23, the contact member rotates. Interfering with the attachment work can be suppressed, and the attachment work can be easily performed.

  In the above-described embodiment, the first base member 2 and the two first scissors members 3 are shown. However, the present invention is not limited to this, and only one or three first scissors members are used. Two or more may be attached.

  In the above embodiment, the columnar body 23 is attached to the columnar body 23 by sandwiching the columnar body 23 between the pair of base members 2. However, the present invention is not limited to this. You may make it attach a base member to a columnar body using a screw.

DESCRIPTION OF SYMBOLS 1 Columnar body fixing tool 2 Base member 2a Main part 2b Flange part 2c Assembly hole 3 1st collar member 4 2nd collar member 5 Movement control member 6 Contact member 6a Mounting nut 10 Mounting bolt 11 Mounting nut 20 Ground 21 Base hole 22 Concrete 23 Column 24 Spiral steel pipe 25 Bottom plate 26 Crane

Claims (3)

A columnar body fixing tool for fixing a columnar body placed on the ground by placing concrete between the foundation hole opened in the ground,
A base member attached to the columnar body;
A rod-shaped first hook member having a base end attached to the base member;
A rod-like second scissors member attached to the first scissors member so as to advance and retreat outside the tip of the first scissors member;
A movement restricting member attached to the first saddle member or the second saddle member, and restricting movement of the second saddle member toward the base member;
A columnar body fixture, comprising: a flat plate-shaped contact member that is attached to the tip of the second flange member and contacts the inner peripheral surface of the foundation hole. The first flange member extends in a cylindrical rod shape,
The second rod member has a cylindrical rod shape or cylindrical rod shape having an outer diameter smaller than the inner diameter of the first rod member, and a male screw is formed on the outer periphery, and a part thereof is inserted into the first rod member. And
The columnar body fixture according to claim 1, wherein the movement restricting member is a nut screwed into the second flange member. A foundation hole opened in the ground,
A columnar body inserted into the base hole;
A columnar fixture that fixes the columnar body to the base hole;
The columnar body fixture is:
A base member attached to the columnar body;
A rod-shaped first hook member having a base end attached to the base member;
A rod-like second scissors member attached to the first scissors member so as to advance and retreat outside the tip of the first scissors member;
A movement regulating member that is attached to the first collar member or the second collar member and regulates the movement of the second collar member toward the base member;
A flat contact member attached to the tip of the second flange member,
While the base member is attached to the columnar body and the contact member is in contact with the inner peripheral surface of the base hole, the movement restricting member is moved to the base member side of the second flange member. Columnar body fixing structure characterized by restricting movement of the columnar body.

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