JP5534596B2 - Pole root winding device - Google Patents

Description

  [Technical Field] The present invention relates to a pole root winding device that is attached to a portion that is an underground part when a pole is built.

  When building concrete utility poles, there are concrete gutters and root windings (also called “root consolidation”) that are used by attaching to the part of the utility pole buried in the ground in order to prevent the settlement and inclination of the utility pole.

  The concrete gutter encloses a pole such as a flat plate attached to one side of a power pole (see, for example, Patent Document 1), a square wing shape attached to one side of a power pole (see, for example, Patent Document 2), and a pole. A rectangular block-like one attached (see, for example, Patent Document 3) is known.

  The pole wrapping device (clamping) is carried out by reinforced concrete work on site according to construction standards, and is a square block with holes for inserting poles (see Patent Document 4, for example) A rectangular block-like one that is wrapped and attached (see, for example, Patent Document 5) is known.

Japanese Utility Model Publication No. 10-14195 (first page, FIG. 4) Japanese Utility Model Publication No. 5-16841 (first page, FIG. 10) JP-A-2-147724 (page 2, FIG. 1) JP 2001-20303 A (page 3, FIG. 1) JP 2008-13951 A (page 6, FIG. 8)

  As in Patent Document 1 and Patent Document 2, the root anchor attached to the side surface of the utility pole must be enlarged laterally if it is to have sufficient subsidence and tilt prevention effects. The amount of soil increases.

  In addition, the anti-tilt effect on the force acting in the direction perpendicular to the root plane can be expected, but if the direction in which the force to tilt the utility pole is not perpendicular to the root plane is Since the area to be multiplied is a product of the sine function of the angle formed by the direction in which the force acts and the plane of the root, the tilt prevention effect must be reduced.

  As in Patent Document 4, an integral root-wrapped concrete provided with a hole for inserting a pole requires a large excavation around the pole to be built, and the amount of excavated soil increases.

  Similarly to Patent Document 3 and Patent Document 5, it is necessary to excavate the periphery of the pole to be built in the square block-like root anchor and the root winding that wraps and attaches the pole, and the amount of excavated soil is large. Become.

  In addition, since the portion recessed to hold the pole is a semicircular arc, depending on the change in the diameter of the pole, prepare a root rod or a root winding having a different arc-shaped recess, or a semicircle It is necessary to make the arc-shaped dent larger than the diameter of the pole and fill it with padding.

  The present invention has been made in view of the above points, and provides a pole root winding device that can suppress the amount of excavated soil and can prevent an inclination against force in all directions and can respond to a change in pole diameter. For the purpose.

The invention described in claim 1 includes a plurality of divided winding blocks disposed around the pole at a location that becomes an underground portion when the pole is built, and a plurality of these winding blocks. Tightening means for tightly connecting each other and fixing the inner surface side of these root winding blocks in contact with the outer peripheral surface of the pole, each root winding block having a block main body and a cross section of the block main body A holding surface for holding the pole formed by two flat surfaces recessed in a central shape on the inner surface side, and a resistance surface bulging and formed on the outer surface side of the cross section of the block body. This is a pole winding device for a pole.

  According to a second aspect of the present invention, in the pole root winding device according to the first aspect, the fastening means includes a bolt inserted between a plurality of block bodies, and a nut screwed into the bolt. The arc-shaped resistance surface of the block body is provided with a recess for seating the bolt head and nut.

  The invention described in claim 3 is such that the block main body of the root winding block in the pole root winding device according to claim 1 or 2 is precast molded with concrete.

  According to a fourth aspect of the present invention, in the pole root winding device according to any one of the first to third aspects, the holding surface of the root winding block is provided in the upper half of the block body, and the lower end of the holding surface And a pole lower end locking surface that locks the lower end surface of the pole.

  According to a fifth aspect of the present invention, in the pole root winding device according to the fourth aspect, the lower resistance surface of the block main body is enlarged.

  According to the first aspect of the present invention, the plurality of divided winding blocks arranged around the pole at the location that becomes the underground portion when the pole is built are fastened to each other by the fastening means. Fixed around the pole, and a resistance surface bulged and formed on the outer side of the cross section of the block body of the above-mentioned root winding block is installed. The pole winding device for poles can cope with building works using a screw auger and can reduce the amount of excavated soil. Furthermore, since the resistance surface bulged and formed in a curved shape is installed on the outer surface side of the plurality of root winding blocks, a pole root winding device having an outer cross section in which the projection surface is uniform from any direction can be obtained. It is possible to eliminate the directionality with respect to the tilt prevention effect, and to ensure the tilt prevention effect against the force of all directions acting on the pole. In addition, the pole is held by a holding surface formed by two flat surfaces recessed in the shape of a square on the inner surface side of the cross section of the block body of the root winding block divided into a plurality. By moving the pole contact part on the holding surface according to the change of the diameter, it is possible to respond to the change of the pole diameter, and the holding surface of the plurality of root winding blocks is line contact in four or more pole axial directions The pole can be securely held by the part.

  According to a second aspect of the present invention, the arc-shaped resistance surface of the block main body is a recess for seating a bolt head inserted between a plurality of block main bodies and a nut screwed into the bolt as a fastening means. Since a strong fastening force can be obtained by screwing the bolt and nut seated in the concave portion, and the bolt and nut can be prevented from being inserted into the concave portion and protruding from the resistance surface. In construction work using an auger, a plurality of root winding blocks fastened with bolts and nuts to the lower part of a pole can be smoothly inserted into a drilling hole having substantially the same diameter as the resistance surface.

  According to the invention described in claim 3, by precast molding the block main body of the root winding block divided into a plurality of pieces, it is possible to secure a necessary weight as a pole root winding device, and By using divided precast products, one-piece products can be reduced in size and weight, and the products can be shared, and the reduction in manpower work during transportation and reduction of excavation work can be achieved by reducing the size and weight. In addition, the precast product can shorten the construction period and can be installed at an appropriate position, and can be mass-produced and economical by making the product common.

  According to the invention described in claim 4, the holding surface of the root winding block is provided in the upper half of the block body, and the lower end surface of the pole is engaged by the lower end locking surface of the pole formed at the lower end of the holding surface. Since it stops, it can be attached so that the root winding device for poles may be extended by receiving the lower end surface of the poles, and can effectively exert resistance to the overturning earth pressure action.

  According to the fifth aspect of the present invention, since the resistance surface below the upper portion of the block body is enlarged, the resistance surface is more effective in resisting the overburden pressure than when the resistance surface is straight over the entire length in the vertical direction. Can be demonstrated.

It is a plane cross section which shows the attachment state of pole root winding apparatus A1 of 1st Embodiment which concerns on this invention. It is a longitudinal cross-sectional view which shows the attachment state of root winding apparatus A1 same as the above. (A) is a front view of one piece of a root winding block of the same root winding device A1, (b) is a right side view thereof, (c) is a plan view thereof, (d) is a rear view thereof, and (e) is (a) ) Is a cross-sectional view taken along line ee, and (f) is a cross-sectional view taken along line ff in (a). (A) is a plan view when the small diameter pole P1 is held by the upper root winding device A1, (a) is a front view in that case, and (B) is an intermediate diameter pole P2 by the upper root winding device A1. (B) is a front view in that case, (C) is a plan view in the case of holding the large-diameter pole P3 by the root winding device A1, and (c) is a front view in that case. It is a cross section which shows the attachment state of pole root winding device A2 of 2nd Embodiment which concerns on this invention. It is a front view which shows the attachment state of root winding apparatus A2 same as the above. (A) is a front view of one piece of a root winding block of the same root winding device A2, (b) is a right side view thereof, (c) is a plan view thereof, (d) is a rear view thereof, and (e) is a (a ) Is a cross-sectional view taken along line ee, and (f) is a cross-sectional view taken along line ff in (a). (A) is a plan view when the small-diameter pole P1 is held by the same root winding device A2, (a) is a front view in that case, and (B) is a middle diameter pole P2 by the same root winding device A2. (B) is a front view in that case, (C) is a plan view in the case where the large-diameter pole P3 is held by the same root winding device A2, and (c) is a front view in that case. It is a plane cross section which shows the attachment state of pole root winding device B1 of 3rd Embodiment which concerns on this invention. It is a front view which shows the attachment state of root winding apparatus B1 same as the above. (A) is a front view of the root winding block 1 piece of the same root winding device B1, (b) is a right side view thereof, (c) is a plan view thereof, (d) is a rear view thereof, and (e) is (a) ) Is a cross-sectional view taken along line ee, and (f) is a cross-sectional view taken along line ff in (a). (A) is a plan view when the small-diameter pole P1 is held by the same root winding device B1, (a) is a front view in that case, and (B) is an intermediate diameter pole P2 by the same root winding device B1. (B) is a front view in that case, (C) is a plan view in the case where the large-diameter pole P3 is held by the root winding device B1, and (c) is a front view in that case. It is a front view which shows the attachment state of the pole winding device B2 of 4th Embodiment which concerns on this invention. It is a front view which shows the attachment state of pole root winding apparatus B3 of 5th Embodiment which concerns on this invention. It is explanatory drawing for demonstrating the balance condition of the force which acts on the pole stood on the ground.

  Hereinafter, the present invention will be described with reference to the first embodiment shown in FIGS. 1 to 4, the second embodiment shown in FIGS. 5 to 8, and the third embodiment shown in FIGS. A detailed description will be given based on the fourth embodiment shown in FIG. 13 and the fifth embodiment shown in FIG.

  FIG. 15 shows soil-side resistance forces F1 and F2 that balance the horizontal load Fo acting on the top of the pole P, such as a power pole, antenna mounting pole, net extension column, lighting fixture mounting column, guard mounting column, etc. In order to show the resistance moments M1 and M2 and to increase the resistance forces F1 and F2 and the resistance moments M1 and M2, at the place where the pole P is built, or at the position where the lower surface of the pole is received Around the pole P, pole winding devices A and B are attached.

  The first embodiment shown in FIGS. 1 to 4 and the second embodiment shown in FIGS. 5 to 8 relate to the pole winding device A, and FIGS. The third embodiment shown, the fourth embodiment shown in FIG. 13, and the fifth embodiment shown in FIG. 14 relate to the pole winding device B.

  First, the configuration of the first embodiment shown in FIGS. 1 to 4 will be described.

  As shown in FIG. 1 and FIG. 2, this first embodiment is a two-part split three-pole pole winding device A1, and each set of pole winding device A1 has a pole P as a building pillar. And a plurality of divided root winding blocks 11 arranged around the pole P at a location that becomes an underground portion when the plurality of root winding blocks 11 are connected to each other around the pole P Tightening means 12 for fixing is provided. The number of sets may be increased from one set as necessary.

  The split-type root winding block 11 may be a resin molded product or a metal molded product, but is preferably a precast concrete member precast molded with concrete.

  The binding means 12 may be a wire rope, but is preferably composed of a plurality of bolts 12b inserted between the plurality of block bodies 13, 13 and nuts 12n screwed into these bolts 12b. Thus, the split-type root winding block 11 is fastened and attached to the pole P.

  The root winding block 11 has a holding surface 14 for holding the pole P formed on the inner surface side of the cross section of the block body 13 by two planes recessed in a central shape. On the outer surface side of the cross section, a resistance surface 15 bulges out in a curved shape, that is, in an arc shape, and is arranged substantially concentrically with the pole P. The arc-shaped resistance surface 15 is formed with a recess 16 for seating the head of the bolt 12b and the nut 12n.

  Insertion holes 17 for inserting the bolts 12b of the fastening means 12 are formed in two places on the block main body 13 from the holding surface 14 to the bottom surface of the concave portion 16. These insertion holes 17 Is formed in the shape of a slit widened in the horizontal direction, so that it can easily cope with a change in the diameter of the pole P, and even if the outer diameter of the pole P changes, it can be brought close to the outer peripheral surface of the pole P. Thus, the bolt 12b can be arranged as a restriction frame.

  FIG. 3 shows a four-face view of one piece of the root winding block 11 and two cross-sectional views. Since the root winding block 11 has a left-right symmetric shape and a vertically symmetric shape, a front view (a), a right side view (b), a plan view (c), and a rear view (d) are shown, and a left side view and a bottom view are shown. Illustration is omitted.

  FIG. 4 shows a case (A) and (a) in which the smallest small-diameter pole P1 is held by a two-part split three-pole pole winding device A1 (B) and (B) b) Cases (C) and (c) where the largest large-diameter pole P3 is held are shown respectively. In FIG. 4, illustration of the fastening means 12 is omitted.

  Next, functions and effects of the first embodiment shown in FIGS. 1 to 4 will be described.

  As shown in FIG. 1 and FIG. 2, two split-type three sets of root winding blocks 11 are arranged around the pole P, and the pole P is sandwiched between the insertion holes 17 and 17 of these block main bodies 13 and 13, respectively. Bolts 12b are inserted, and these bolts 12b and nuts 12n screwed to the respective bolts 12b are tightened with a tool such as a box wrench, whereby a plurality of root winding blocks 11 are tightly coupled to the outer peripheral surface of the pole P. Install. At this time, on the inner surface side of the cross section of the two-divided block main body 13, the holding surface 14 formed by two U-shaped flat surfaces, through four line contact portions in the pole axial direction, the pole While holding the outer peripheral surface of P, the pole P is clamped by the bolts 12b located on both sides of the pole P.

  Since the resistance surfaces 15 of the plurality of root winding blocks 11 attached to the pole P in this way have a substantially circular cross section, it can be dealt with by simply excavating a hole with a circular cross section using a screw auger. In addition to being able to minimize the amount of excavated soil, the multiple root winding blocks 11 having a circular cross section have a uniform projection surface from any direction, eliminating the directionality against the inclination prevention effect, and preventing inclination against omnidirectional force The effect can be secured.

  As shown in FIG. 4, the holding surface 14 for holding the poles P1, P2, and P3 of the root winding block 11 divided into a plurality of shapes is formed in a substantially square shape with the center recessed, so that the poles P1 and P2 are formed. , P3, the contact portion moves according to the change in the diameter of P3, so that it is possible to cope with the change in the pole diameter by using the root winding block 11 having the same shape. That is, regardless of the diameters of the poles P1, P2, and P3, even if the root winding block 11 having the same shape is used, there is no gap that has to be filled with the padding, and stable fixing is possible.

  By dividing into a plurality of root winding blocks 11, one piece of the root winding block 11 can be reduced in weight, and since it is a precast product that is manufactured at the factory and easily assembled at the building pillar site, for concrete curing, There is no need to regulate the area around the building pillar for a long time.

  Next, the configuration of the second embodiment shown in FIGS. 5 to 8 will be described.

  As shown in FIG. 5 and FIG. 6, this second embodiment is a three-part split two-set pole root winding device A2, and each set of pole root winding device A2 has a pole P as a building pillar. A plurality of divided root winding blocks 21 that are arranged around the pole P at a location that becomes an underground part when the two are connected, and the plurality of root winding blocks 21 are connected to each other around the pole P Tightening means 22 for fixing is provided. The number of sets may be increased from one set as necessary.

  The split-type root winding block 21 may be a resin molded product or a metal molded product, but is preferably a precast concrete member precast molded with concrete.

  The binding means 22 may be a wire rope, but is preferably composed of a plurality of bolts 22b inserted between the plurality of block bodies 23, 23 and nuts 22n screwed into the bolts 22b. Thus, the split-type root winding block 21 is tightly attached to the pole P.

  The root winding block 21 is formed with a holding surface 24 for holding the pole P on the inner surface side of the cross section of the block main body 23 formed in a fan-shaped cross section by two planes recessed in the shape of a square. On the outer surface side of the cross section of the block main body 23, a resistance surface 25 is formed to bulge in a curved shape, that is, in an arc shape, and is disposed substantially concentrically with the pole P. The arc-shaped resistance surface 25 is formed with a recess 26 for seating the head of the bolt 22b and the nut 22n.

  Insertion holes 27 for inserting the bolts 22b of the fastening means 22 are formed at two locations on the block main body 23. The insertion holes 27 are gradually increased in diameter on the inner surface side from the resistance surface 25 side. Since it is formed in a tapered shape, when the bolt 22b is inserted from the one insertion hole 27 into the opposite insertion hole 27, the inlet of the other insertion hole 27 is large and can be easily inserted.

  FIG. 7 shows a four-sided view of one piece of the root winding block 21 and two cross-sectional views. Since the root winding block 21 has a left-right symmetric shape and a vertically symmetric shape, a front view (a), a right side view (b), a plan view (c), and a rear view (d) are shown, and a left side view and a bottom view are shown. Illustration is omitted.

  FIG. 8 shows a case (A) and (a) in which the smallest small-diameter pole P1 is held by the three-part split type two-pole pole winding device A2, and (B) and (B) in which the intermediate-diameter pole P2 is held. b) Cases (C) and (c) where the largest large-diameter pole P3 is held are shown respectively. In FIG. 8, illustration of the fastening means 22 is omitted.

  Next, the function and effect of the second embodiment shown in FIGS. 5 to 8 will be described.

  As shown in FIGS. 5 and 6, two sets of three-part split-type root winding blocks 21 are arranged around the pole P every 120 °, and linearly opposed insertion holes 27 of these block bodies 23 and 23 are arranged. , 27, respectively, and bolts 22b and nuts 22n screwed to the respective bolts 22b are tightened with a tool such as a box wrench so that a plurality of root winding blocks 21 are tightly connected to each other to form a pole P Attach to the outer peripheral surface. At this time, on the inner surface side of the cross section of the three-divided block main body 23, the holding surface 24 formed by two U-shaped flat surfaces is connected to the poles via the six line contact portions in the pole axial direction. The outer peripheral surface of P is held.

  The resistance surface 25 of the cross-sectional outer shape of the plurality of root winding blocks 21 attached to the pole P in this way has a substantially circular cross section. Therefore, only a circular cross-section hole is excavated using a screw auger for the construction work. It is possible to reduce the amount of excavated soil, and the plurality of root winding blocks 21 having a circular cross section are uniform in the projection plane from any direction, eliminating the directionality for the tilt prevention effect, It is possible to secure a tilt prevention effect against

  As shown in FIG. 8, the holding surfaces 24 for holding the poles P1, P2, and P3 of the root winding block 21 divided into a plurality of shapes are formed in a substantially square shape with the center recessed, so that the poles P1 and P2 are formed. , P3, the contact portion moves in accordance with the change in the diameter of P3, so that it is possible to cope with the change in the pole diameter by using the root winding block 21 having the same shape. That is, regardless of the diameters of the poles P1, P2, and P3, even if the root winding block 21 having the same shape is used, there is no gap that needs to be filled with the padding, and stable fixing is possible.

  By dividing into a plurality of root winding blocks 21, one piece of the root winding block 21 can be reduced in weight, and because it is a precast product that is manufactured at the factory and easily assembled at the building pillar site, for concrete curing, There is no need to regulate the area around the building pillar for a long time.

  Next, the configuration of the third embodiment shown in FIGS. 9 to 12 will be described.

  As shown in FIG. 9 and FIG. 10, this third embodiment is a deep rooted and split-type pole root winding device B1 at a location that becomes an underground part when the pole P is built. A plurality of divided root winding blocks 31 disposed around the lower end of the pole P, and fastening means 32 for fastening the plurality of root winding blocks 31 to each other and fixing them around the pole P; ing.

  The split-type root winding block 31 may be a resin molded product or a metal molded product, but is preferably a precast concrete member precast molded with concrete.

  The binding means 32 may be a wire rope, but preferably comprises a plurality of bolts 32b inserted between the plurality of block bodies 33, 33 and nuts 32n screwed into these bolts 32b. Thus, the split-type root winding block 31 is tightly attached to the pole P.

  The root winding block 31 is formed with a holding surface 34 for holding the pole P on the inner surface side of the cross section of the block main body 33 by two flat surfaces recessed in the shape of a square. On the outer surface side of the cross section, a resistance surface 35 is formed to bulge in a curved shape, that is, in an arc shape, and is disposed substantially concentrically with the pole P. The arc-shaped resistance surface 35 is formed with a recess 36 for seating the head of the bolt 32b and the nut 32n.

  Insertion holes 37 for inserting the bolts 32b of the fastening means 32 are formed at eight locations on the block main body 33. The insertion holes 37 gradually increase in diameter on the inner surface side from the resistance surface 35 side. Since it is formed in a tapered shape, when the bolt 32b is inserted from the one insertion hole 37 into the opposite insertion hole 37, the inlet of the other insertion hole 37 is large and can be easily inserted.

  The holding surface 34 of the root winding block 31 is provided in the upper half portion of the block body 33, and a pole lower end locking surface 38 for locking the lower end surface of the pole P is formed at the lower end of the holding surface 34. Has been. The lower half of the block body 33 is formed in a sector cross section.

  FIG. 11 shows a four-sided view of one piece of the root winding block 31 and two cross-sectional views. Since the root winding block 31 has a left-right symmetric shape and a vertically symmetric shape, a front view (a), a right side view (b), a plan view (c), and a rear view (d) are shown, a left side view and a bottom view. Illustration is omitted.

  FIG. 12 shows a case where the smallest small-diameter pole P1 is held by the deep-rolling and split-type pole root winding device B1 (A) and (a), a case where the intermediate-diameter pole P2 is held (B), and (B) and (C) and (c) in the case of holding the largest large-diameter pole P3 are shown. In FIG. 12, the illustration of the fastening means 32 is omitted.

  Next, the function and effect of the third embodiment shown in FIGS. 9 to 12 will be described.

  As shown in FIGS. 9 and 10, a three-divided root winding block 31 is arranged around the lower end of the pole P every 120 °, and linearly opposed insertion holes 37 of these block bodies 33, 33 are arranged. , 37 respectively, and bolts 32b are inserted into the bolts 32, and nuts 32n screwed to the respective bolts 32b are tightened with a tool such as a box wrench, so that three sets of root winding blocks 31 are tightly coupled to each other. Attach to the outer peripheral surface of the lower end of P. At this time, on the inner surface side of the cross section of the three-divided block main body 33, the holding surface 34 formed by the two U-shaped flat surfaces is connected to the pole through the six line contact portions in the pole axial direction. The outer peripheral surface of P is held.

  In this way, the resistance surfaces 35 of the plurality of root winding blocks 31 attached to the lower end of the pole P have a substantially circular cross section. Therefore, only a hole with a circular cross section is excavated using a screw auger for building pillar construction. In addition to being able to minimize the amount of excavated soil, the multiple root winding blocks 31 having a circular cross-section have a uniform projection plane from any direction, eliminating the directionality for the tilt prevention effect, It is possible to secure a tilt prevention effect against

  In particular, the holding surface 34 of the root winding block 31 is provided in the upper half of the block body 33, and the lower end surface of the pole P is locked by the pole lower end locking surface 38 formed at the lower end of the holding surface 34. Therefore, it is possible to attach the concrete pole winding device B1 so as to receive and extend the lower surface of the concrete pole P, and to effectively exert the resistance against the overturning earth pressure action as shown in FIG. it can.

  As shown in FIG. 12, the holding surfaces 34 for holding the poles P1, P2, and P3 of the root winding block 31 divided into a plurality of shapes are formed in a substantially square shape with the center recessed, thereby making the poles P1, P2 , P3, the contact portion moves according to the change in the diameter of P3, so that it is possible to cope with the change in the pole diameter by using the root winding block 31 having the same shape. That is, regardless of the diameters of the poles P1, P2, and P3, even if the root winding block 31 having the same shape is used, there is no gap that must be filled with the padding, and stable fixing is possible.

  By dividing into a plurality of root winding blocks 31, one piece of the root winding block 31 can be reduced in weight, and because it is a precast product that is manufactured at the factory and easily assembled at the building pillar site, for concrete curing, There is no need to regulate the area around the building pillar for a long time.

  Next, the fourth embodiment shown in FIG. 13 and the fifth embodiment shown in FIG. 14 are the deep rooted three-part split type in the third embodiment shown in FIGS. FIG. 13 shows a modification of the outer shape (enlarged root winding). FIG. 13 shows a concrete pole winding device in which the resistance surfaces 35a of the plurality of root winding blocks 31a are gradually enlarged from the upper end portion to the lower end portion of the block body 33a. FIG. 14 shows a concrete pole in which a resistance surface 35b2 in the lower half of the upper half resistance surface 35b1 of the block body 33b of the plurality of root winding blocks 31b is enlarged and formed through a step portion 39. The root winding device B3 is shown.

  Then, according to each of the embodiments shown in FIGS. 13 and 14, the same effects as those of the third embodiment shown in FIGS. 9 to 12 can be obtained, and the resistance of the block main body 33a can be obtained. Since the lower part of the surface 35a is enlarged from the upper part, or the lower part of the resistance surface 35b2 of the upper part of the block body 33b is formed, the resistance surface 35b2 is enlarged. More effective resistance to earth pressure.

  The effects common to the above embodiments are as follows.

  The root winding blocks 11, 21, 31 divided around the pole P are connected to each other by the fastening means 12, 22, 32 at the location which becomes the underground part when the pole P is built. And the resistance surfaces 15, 25, 35 formed in an arc shape on the outer surface side of the cross-section of the block bodies 13, 23, 33 of the root winding blocks 11, 21, 31 are fixed to the periphery of the pole P. The pole winding device A1, A2, B1, B2, B3 is a construction using a screw auger for the solidification of the pole P by cast-in-place reinforced concrete construction, which is almost concentric with P. It can cope with pillar construction and can suppress the amount of excavated soil.

  Furthermore, since the resistance surfaces 15, 25, and 35 formed in an arc shape on the outer surface side of the plurality of root winding blocks 11, 21, and 31 are disposed substantially concentrically with the pole P, the projection surface is uniform from any direction. The pole winding device A1, A2, B1, B2, B3 having a circular outer cross section can be eliminated, the directionality against the tilt prevention effect can be eliminated, and the tilt with respect to the omnidirectional force acting on the pole P Preventive effect can be secured.

  In addition, the holding surfaces 14, 24, formed by two flat surfaces recessed in the shape of a center on the inner surface side of the cross section of the block main bodies 13, 23, 33 of the root winding blocks 11, 21, 31 divided into a plurality of parts, Since the poles P1, P2, and P3 are held at 34, the pole contact portions at the holding surfaces 14, 24, and 34 are moved in accordance with changes in the diameters of the poles P1, P2, and P3. The poles P1, P2, and P3 can be securely attached to the holding surfaces 14, 24, and 34 of the plurality of root winding blocks 11, 21, and 31 by the line contact portions in four or more pole axial directions. Can be carried.

  The arc-shaped resistance surfaces 15, 25, 35 of the block bodies 13, 23, 33 are bolts 12b, 22b inserted between the plurality of block bodies 13, 13, 23, 23, 33, 33 as fastening means. , 32b and the recesses 16, 26, 36 for seating the nuts 12n, 22n, 32n screwed into the bolts 12b, 22b, 32b, the bolts 12b seated in the recesses 16, 26, 36 are provided. , 22b, 32b and nuts 12n, 22n, 32n are screwed together to obtain a strong fastening force, and these bolts 12b, 22b, 32b and nuts 12n, 22n, 32n are inserted into the recesses 16, 26, 36. Projecting from the resistance surfaces 15, 25, and 35 can be prevented or suppressed, so that in the construction of a pillar using a screw auger, the pole P is connected to the lower part of the pole P by bolts 12b, 22b, 32b and nuts 12n, 22n, 32n. Smoothly insert a plurality of root winding blocks 11, 21, 31 into a drilling hole having the same diameter as the resistance surfaces 15, 25, 35 Door can be.

  By precast molding the block main body 13, 23, 33 of the plurality of divided root winding blocks 11, 21, 31 with concrete, the necessary weight can be secured as a pole root winding device, and the pole root winding device By using divided precast products, one-piece products can be reduced in size and weight, and the products can be shared, and the reduction in manpower work during transportation and reduction of excavation work can be achieved by reducing the size and weight. In addition, the precast product can shorten the construction period and can be installed at an appropriate position, and can be mass-produced and economical by making the product common.

  The present invention has applicability in industries that manufacture and sell pole winding devices for poles.

P pole A1, A2, B1, B2, B3 Neck winding device for pole
11, 21, 31 Root winding block
12, 22, 32 Tightening means
12b, 22b, 32b bolt
12n, 22n, 32n nut
13, 23, 33 block body
14, 24, 34 Carrying surface
15, 25, 35 Resistance surface
16, 26, 36 recess
38 Pole bottom locking surface

Claims (5)

A root winding block divided into a plurality of pieces arranged around the pole at a location that becomes an underground part when building a pole;
Tightening means for fastening these plurality of root winding blocks to each other and fixing the inner surface side of these root winding blocks in contact with the outer peripheral surface of the pole,
Each of the above root winding blocks
A block body;
A holding surface for holding the pole, which is formed by two flat surfaces recessed in a central U-shape on the inner surface side of the cross section of the block body;
A pole winding device characterized by comprising: a resistance surface bulged and formed on the outer surface side of the cross section of the block body. The tightening means includes a bolt inserted between the plurality of block bodies, and a nut screwed to the bolt.
The pole winding device according to claim 1, wherein the arc-shaped resistance surface of the block body includes a recess for seating the bolt head and nut. The pole winding device according to claim 1 or 2, wherein the block main body of the winding block is precast-molded with concrete. The holding surface of the root winding block is provided in the upper half of the block body,
The pole root winding device according to any one of claims 1 to 3, further comprising a pole lower end locking surface that is formed at a lower end of the holding surface and locks the lower end surface of the pole. The root winding device for a pole according to claim 4, wherein a resistance surface below the upper portion of the block body is enlarged.

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