JP5528680B2 - Reinforcing cover structure for utility poles - Google Patents

Description

  The present invention relates to a utility pole reinforcing cover structure for reinforcing a damaged utility pole.

  Electric poles are used to guide and connect cables such as power transmission lines, telephone lines, optical fibers, cable TV, cable broadcasting, etc., and many of the electric poles are reinforced concrete hollow columns. .

  As shown in FIG. 11, the utility pole is always loaded by the weight of the transformer 2 and the cable 3 such as electric wires mounted on the top of the utility pole 1, and some of them are greatly bent due to the secular change in combination with the weight. As a result, as shown in FIG. 11 (A), the surface of the utility pole 1 is damaged, such as cracks a, or as shown in FIG. May cause.

  When such damage exceeds the limit, there is a problem that the PC steel wire built in the utility pole 1 is cut and the strength as the utility pole is reduced.

  Further, when a crack occurs, the moisture permeated from the crack a may freeze and expand in a cold region or the like, and the crack a may further increase and expand.

  In places close to the coast, there is a concern that corrosion of the PC steel wire may occur due to salt, which eventually leads to breakage of the utility pole.

  It is most desirable to quickly replace a power pole that has caused the above problems with a new one. However, since transmission and communication lines cannot be easily suspended, a temporary power pole is established. Correspondingly, it is forced to remove the damaged utility pole and build a new one in the meantime.

  However, the problem remains that the work is not easy in urban areas.

  Therefore, a cover is wound around the damaged part of the conventionally damaged power pole, a gap is created between the cover and the power pole, and mortar, resin, and other fillers are injected into the gap and solidified by solidification. The technique which was made is provided (patent document 1).

  However, the above-mentioned conventional structure has a structure in which a pair of covers that are divided into two in the axial direction and are connected by hinges are externally fitted to the damaged part of the utility pole and the two covers are bound together, and the head of the bolt used for the binding is the outer surface. Since the hinge bearing part and the fixing band and its fixture protrude, the passerby and the vehicle may come into contact with these protrusions if the cover is inserted at a low position on the utility pole. , Resulting in unexpected injury or damage.

  If the cover is concentrically fitted and fixed to the utility pole, it may cause traffic injuries, especially in urban areas where traffic is heavy, such as urban areas.

  Furthermore, in order to prevent the cover from protruding, the cover is bound by welding, which requires work using special techniques, equipment, and equipment. This is not an easy task.

  On the other hand, in the conventional fixing means using bolts, a nut is welded and attached to the inner surface of the cover that overlaps the lower side, and the bolt is inserted from the cover that overlaps the upper side and screwed into the nut to be tightened. ing.

Therefore, it is necessary to weld the nuts individually in advance, and it is not easy if there are many fastening points.
JP 2002-152959 A

  In view of the above points, the present invention eliminates the presence of protrusions projecting to the outer surface after reinforcement work, so that they will not be damaged when in contact with a person or vehicle, and use special techniques, equipment, or equipment. It is possible to work without any problems, and in particular, to make the work easy, such as reinforcing the height of a utility pole.

  As a means for solving the above problems, the present invention provides a reinforcing cover for externally fitting and reinforcing a damaged portion of an existing utility pole, wherein the binding portion of the cover has a screwed structure, and at least the inner side of the binding portion The screwing portion of the binding overlap edge of the cover located in the recess is recessed and the screw is positioned in the recess, so that the binding end does not protrude from the outer peripheral surface of the cover.

  The recessed portion includes both a structure formed continuously in the longitudinal direction of the binding overlap edge of the cover and a structure formed separately in a portion where the head portion of the screw is located.

  The reinforcing cover is composed of a pair of covers having a semicircular cross section that can be fitted to the outer periphery of the half of the existing utility pole and having a required length. An elongated plate-like female screw member in which a required number of screw holes are arranged at an interval of 5 mm is added, and a screw inserted from a binding portion on the outside is screwed into the screw hole of the female screw member and fastened. It is preferable to do so.

  As the screw for screwing, it is preferable to use a round countersunk screw so that the head does not protrude more.

  Formed on the inner surface of both ends in the longitudinal direction of the cover is a flange that contacts the outer peripheral surface of the existing utility pole as closely as possible, provided at least one filler inlet at an appropriate position of the cover, and closed by the flange A filler can be injected into the cover.

  On the other hand, if each of the pair of covers is formed in a long and short manner, and these covers are externally fitted as a staggered arrangement on the existing power pole, the strength reduction can be suppressed even if the cover is divided in the longitudinal direction, In particular, it can be suitable for the reinforcement work of the damaged part at the height of the existing utility pole.

  In order to increase work efficiency, it is preferable to provide a centering tool for fitting the center of the power pole and the center of the cover so that the center of the power pole coincides with the center of the cover when the cover is fitted around the existing power pole.

  This centering tool can be composed of a band that can be fitted to a utility pole, and a centering portion that is fixed to the band and has an outer periphery of a tip that has a conical tapered surface.

  According to the present invention, a cover is externally fitted to a damaged portion of an existing utility pole, the binding portion is bound by a screw inserted through a screw insertion hole of a binding overlapping edge of the binding portion, and the head of the screw is attached. Since it was placed at the position of the recessed portion formed in the binding portion of the cover, and the binding end did not protrude from the peripheral surface of the cover, even if a passerby or a vehicle contacted, these were not damaged, It can be a highly safe reinforcing cover.

  In particular, the female screw member corresponding to the nut at the time of screwing is composed of an elongated plate-like member that is approximately the same length as the cover, and it can be stably fixed by tape fastening or screwing into several screw holes. Since it can be screwed, there is no need to perform anti-rotation treatment in advance, such as individually welding nuts to the cover, and it can be installed quickly and is extremely effective for construction in urban areas. Can be demonstrated.

  By forming a pair of covers in two long and short shapes and fitting them in a zigzag arrangement on existing power poles, even a long range of construction can be reinforced without incurring a reduction in strength.

  If the centering tool is used, the gap between the utility pole and the reinforcing cover can be made uniform, and the covers are moved in the diameter-expanding direction, so that the play of the screwing portion disappears and the cover is integrated more reliably. A predetermined strength can be easily obtained.

  FIG. 1 is a front view showing a part of an embodiment of a power pole reinforcing cover structure according to the present invention, with a pair of covers 10A and 10B having a semicircular cross section that can be fitted over half of an existing power pole 1 These covers 10A and 10B are configured such that binding portions 11 and 11 for integrating the two are fixed to each other by a plurality of screws 12, 12.

  The cover 10A, 10B is made of a steel plate having a thickness of about 3.5 mm, has a maximum length of about 4.5 m, and can be in close contact with the outer peripheral surface of the existing utility pole 1 at both ends in the longitudinal direction. 13 and 13 are formed. Further, a filler injection port 15 for injecting mortar or other reinforcing filler 14 is provided at an appropriate position of at least one cover 10A.

  In the embodiment shown in FIGS. 2 (A) and 2 (B), the binding portions 11 and 11 of the covers 10A and 10B are stepped along the longitudinal direction of the binding overlapping edge 16 of one cover 10B. It is made into the recessed part 17 and is made into the recessed part 17, The binding end 18 of the cover 10A used as the other outer side is fitted by this recessed part 17, The binding end 18 protrudes from the outer peripheral surface of cover 10A, 10B It is formed in such a way that it is fastened with screws 12, 12,.

  In the embodiment shown in FIGS. 3 (A) and 3 (B), both of the binding overlapping edges 16 and 16 of the binding portions 11 and 11 of both covers 10A and 10B are recessed in a step shape and fitted into each other. , 17, and screws 12, 12... Are inserted into these binding portions 11, 11 and fastened.

  In this embodiment, not only the binding ends 18 and 18 of the covers 10A and 10B but also the head portion 12a of the screw 12 is located in the recessed portion 17 of the cover 10A on the outside, and nothing protrudes from the outer peripheral surface of the cover 10A. It becomes a form without anything.

  The recesses are formed continuously in the longitudinal direction of the covers 10A and 10B as shown in FIGS. 2 and 3, and only the position of the screw 12 is recessed by pressing or the like as shown in FIG. May be.

  The fastening means using the screws 12, 12... Form a part of the characteristic configuration of the present invention, and a required number of screw holes 19, 19 at a predetermined interval as shown in FIG. An elongated plate-like female screw member 20 in which.

  As shown in FIGS. 2 to 4, the female screw member 20 is temporarily fixed along the inner side of the overlapping edge 16 of the binding portion 11, 11 of the cover 10 </ b> B on the inner side, and the covers 10 </ b> A, 10 </ b> B are attached. The screw 12 inserted through the overlapping edge 16 of the binding portions 11 and 11 is screwed into the screw hole 19 of the female screw member 20 and fastened.

  Therefore, the female screw member 20 is temporarily fixed to the inner surface of the overlapping edge 16 of the binding overlapping portion 11 of the cover 10B on the inner side with the positions of the screw holes 19, 19. The screws 10 are inserted into the screw insertion holes 21, 22... Of the portions 16, 16 and screwed into the screw holes 19 of the female screw member 20, whereby the covers 10 A and 10 B can be integrated.

  In this manner, the reinforcing cover is completed by fitting into the reinforcing part such as a damaged portion of the existing utility pole 1 and injecting the filler 14 from the filler inlet 15 to solidify.

  FIG. 6 shows an embodiment in which each of the pair of covers 10A and 10B is formed in two long and short shapes, and these are externally fitted to the existing power pole 1 in a staggered arrangement. It is shown as a preferred form for reinforcing the place.

That so externally fitted connects the short cover 10A ₂ long cover 10A ₁ at one side in the connecting flanges 23 and 23, flange connecting the long cover 10B ₂ short cover 10B ₁ at the other side 24 and 24 are connected and externally fitted, and these are integrally joined together by screws 12, 12,...

  According to this embodiment, since the covers 10A and 10B are divided in the longitudinal direction, even if the existing utility pole 1 is reinforced at a high place, the carrying work is easy, and the strength as the reinforcing cover is still lost. And a sufficiently high strength can be obtained.

  7 to 9, when constructing a reinforcing cover, the center of the utility pole 1 and the centers of the covers 10 </ b> A and 10 </ b> B are made to coincide, and the gap between the inner surface of the cover 10 </ b> A and 10 </ b> B and the outer peripheral surface of the utility pole 1 is uniform. In this example, the centering tool 25 is used so as to obtain a stable strength. The centering tool 25 includes a pair of bands 26 and 26 which are surrounded by the electric pole 1 and fastened. A centering portion 27 having a conical tapered surface 27a that is fixed to the bands 26 and 26 and whose outer periphery of the tip end portion can be fitted into the ends of the covers 10A and 10B is formed. As shown in FIG. , 27 is automatically centered by being inserted into the ends of the covers 10A, 10B, and removed after the filler 14 is solidified. In the figure, reference numerals 28 and 29 denote packing materials for maintaining liquid tightness, and reference numeral 26 a denotes a fastening flange for the bands 26 and 26.

  Due to the centering action of the centering tool 25, the cover 10A, 10B is pulled in the left-right direction in the figure as shown in FIG. 10, so that the play between the screw insertion holes 21, 22 and the screw 12 disappears. It is fixed in a loose state and is firmly tightened.

The front view which fractured | ruptured one part which shows one Embodiment of the cover structure for reinforcement by this invention. (A) is an AA expanded sectional view of FIG. 1, (B) is a BB expanded sectional view of (A). FIG. 2A is a view corresponding to FIG. 2A showing another embodiment, and FIG. FIG. 2B is a view corresponding to another embodiment. The partial notch perspective view which shows an example of the internal thread member in this invention. Sectional drawing which shows other embodiment of the cover structure for reinforcement by this invention. A partial sectional view showing a use state of a centering tool in the present invention. The top view which shows an example of a centering tool. The front view of a half part. Sectional drawing which shows the condition of the fastening part of the screw at the time of the state which the cover expanded by the centering effect | action. (A), (B) is explanatory drawing which shows the damaged location of a utility pole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Existing electric pole 10A, 10B Cover 11 Binding part 12 Screw 13 ridge part 14 Filler 15 Filling material injection port 16 Binding overlapping edge 17 Recessed part 18 Binding end 19 Screw hole 20 Female screw member 21,22 Screw insertion hole 23 24 Connecting flange 25 Centering tool 26 Band 27 Centering part

Claims (8)

A reinforcing cover for externally fitting and reinforcing a damaged part of an existing power pole, wherein the binding portion of the cover has a screwing structure, and the binding polymerization of the cover located at least inside the binding portion The screwing portion of the edge is recessed, and the screw is positioned in the recessed portion so that the binding end does not protrude from the outer peripheral surface of the cover .
On the inner surface of both ends in the longitudinal direction of the cover, an equivalent flange portion is formed from the outer peripheral surface of the cover toward the outer peripheral surface of the existing power pole and abuts the outer peripheral surface of the existing power pole as closely as possible. A reinforcing cover structure for a utility pole, characterized in that at least one filler inlet is provided.   The reinforcing cover structure for a utility pole according to claim 1, wherein the recessed portion is formed continuously in the longitudinal direction of the overlapping overlap edge of the cover.   The reinforcing cover structure for an electric pole according to claim 1, wherein the recessed portion is formed separately in a portion where a screw head is located.   The reinforcing cover is composed of a pair of covers having a semi-circular cross section that can be fitted to the outer periphery of the half of the existing utility pole and having a required length. An elongated plate-like female screw member in which a required number of screw holes are arranged at an interval of is attached, and a screw inserted from the binding portion on the outside is screwed into the screw hole of the female screw member and fastened The reinforcing cover structure for a utility pole according to any one of claims 1 to 3, wherein the reinforcing cover structure is for power poles.   The reinforcing cover structure for a utility pole according to any one of claims 1 to 4, wherein the screw is a round countersunk screw.   The reinforcing cover structure for a utility pole according to any one of claims 4 to 5, wherein each of the pair of covers is formed in a long and short manner, and these covers are externally fitted and fixed to the existing utility pole as a staggered arrangement. . A reinforcing cover for externally fitting and reinforcing a damaged part of an existing power pole, wherein the binding portion of the cover has a screwing structure, and the binding polymerization of the cover located at least inside the binding portion The screwing portion of the edge is recessed, and the screw is positioned in the recessed portion so that the binding end does not protrude from the outer peripheral surface of the cover.
A centering tool for fitting the center of the power pole and the center of the cover to be fitted and inserted into the end of the cover that is externally fitted to the existing power pole ,
The reinforcing cover structure for a utility pole , wherein the centering tool has a centering portion formed with a conical tapered surface whose outer periphery of the tip portion can be fitted into the cover end . The centering tool has a band that can be fitted to a power pole, the centering portion is fixed to the band, and the centering portion is automatically centered by being inserted into the end of the cover. The reinforcing cover structure for an electric pole according to claim 7 configured as described above.

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