JP2007332730A - Closing cover for working hole for utility pole made of steel sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a closing cover with excellent work efficiency, capable of providing a stable temporary support by an easy means until an inner cover body inserted inside of a utility pole from a working hole is connected with an outer cover body. <P>SOLUTION: The blocking cover comprises the inner cover body 9 for closing the working hole 5 opened vertically long in a part of the utility pole 3 made of steel sheet from the inside, the outer cover body 7 to be applied to the working hole 5 from the outside, which includes a vertically long opening hole 13 corresponding to the working hole 5, and a mounting screw 17 for integrally connecting three bodies of the outer cover body 7, the working hole opening periphery 5a of the utility pole and the inner cover body 9. The inner cover body 9 includes a cover working hole 21 to be closed from the outside by a screw type cap 25, which is provided in an upper end position opposed to the opening hole 13 of the outer cover body 7, and the cover working hole 21 is used for temporary support and filler injection. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a closing cover for closing a work hole for a utility pole opened in a steel pole for electric wires or lighting lamps.

  In recent years, a reinforcement work for reinforcing an electric pole by filling an internal space of an electric pole made of a steel plate with a reinforcing material such as mortar has been widely performed.

  When the utility pole is reinforced, a vertically elongated working hole 103 is formed in the utility pole 101 as shown in FIG. The working hole 103 is a reinforcing member arrangement bracket (not shown) made of aramid fibers made of aramid fiber inserted into the inside of the electric pole 101 by inserting a hand from the outside at a predetermined interval at the time of reinforcement work. Used when passing through.

The work hole 103 is closed by a hole closing jig after the reinforcement work is completed.
Japanese Patent Application No. 2005-313109

  The work hole opened in a part of the utility pole will be closed as a sandwich structure sandwiched from inside and outside by a hole closing jig. At this time, for example, a closing plate is inserted into the inside of the utility pole from the work hole. At times, there is a demand for how to temporarily support the inner plate inserted into the inner plate while it is coupled with the outer closing plate.

  Therefore, in the present invention, it is possible to obtain a stable temporary support with simple means until the inner cover body inserted into the utility pole from the work hole is joined to the outer cover body, and workability is improved. An object of the present invention is to provide a power pole work hole closing cover excellent in the above.

In order to achieve the above-mentioned object, in the present invention, an inner cover body that closes a work hole that opens vertically in a part of a steel pole is applied from the inside, and corresponds to the work hole from the outside of the work hole. An outer cover body provided with a vertically long opening hole, an outer cover body, a work hole opening peripheral edge of a utility pole, and a mounting screw for integrally connecting the three members of the inner cover body,
The inner cover body is provided with a cover working hole that is closed from the outside by a screw-type cap at an upper end portion facing the opening hole of the outer cover body.

  According to the present invention, when the outer cover body is first applied from the outside of the working hole and marked through the screw hole of the outer cover body, the screw of the outer and inner cover bodies is provided at the opening peripheral portion of the working hole. The same exact screw hole as the hole can be drilled.

  Further, for example, a rod-shaped support is inserted into the cover work hole of the inner cover body, while the support handle that can be inserted into the work hole formed in the utility pole below is removed by an adhesive means such as tape. It is possible to obtain a stable temporary support state of the inner cover body stable by the support tool by adhering freely and inserting the inner cover body into the electric pole from the work hole with the support tool in a vertical orientation. .

  Also, through the opening hole of the outer cover body in the other open hand, for example, by holding the support handle in a state of being supported suspended by the wrist, both the outer cover body and the inner cover body are supported by one hand can do.

  At this time, after the outer cover body is correctly applied to the outside of the work hole with one free hand, the mounting screws are screwed into the screw holes, so that the outer cover body, the peripheral edge of the work hole opening, and the inner cover body are separated. The person can be temporarily supported securely.

  In addition, holding the support handle in the temporary support state with one hand and pulling it toward you, tighten the mounting screw to the end with a tool held in the other hand, so that one person covers the closure with the work hole in between. Can be installed securely.

  In addition, if the support and the support handle are removed after the closure cover has been attached, the cover work hole from which the support has been removed is used not only for temporary support but also for filling a filler such as mortar. It can be used as a work hole for material injection.

  In addition, the cover working hole after use can be closed with a cap, and the cap is a screw type so that it does not fall off even when a filling pressure by a filler acts, and a reliable mounting state is obtained.

  Hereinafter, specific description will be given with reference to FIGS. 1 to 9.

  FIG. 1 shows an exploded perspective view of a closing cover according to the present invention. The closing cover 1 is formed by sandwiching a work hole 5 for repairing a vertically long utility pole opened in a steel pole 3 from the inside and outside, and is composed of an outer cover body 7 and an inner cover body 9 made of a synthetic resin material. Made into a combined structure.

  The outer cover body 7 and the inner cover body 9 have the same vertical (horizontal direction in the drawing) and horizontal (horizontal direction in the drawing) dimensions in FIG. 9 is formed in the same circular arc surface as the outer peripheral surface of the utility pole 3 from the place where it contacts each other from the inside of the work hole 5.

  The outer cover body 7 is provided with a vertically long opening hole 13 and a screw hole 15.

  The vertically long opening hole 13 is provided at a substantially central portion of the outer cover body 7, and the width a and the length b are made slightly larger than the width a-1 and the length b-1 of the working hole 5.

  A plurality of screw holes 15 are provided along the outer peripheral edge of the outer cover body 7 and serve as through holes through which the mounting screws 17 pass.

  The inner cover body 9 is provided with a vertically long ridge 19 and a cover working hole 21 and a screw hole 23 provided at the upper end portion of the ridge 19.

  A plurality of screw holes 23 are provided along the outer peripheral edge of the inner cover body 9 at positions corresponding to the screw holes 15 of the outer cover body 7, and the inner side is provided with a screw portion 23 a with which the mounting screw 17 is screwed. It has become.

  The ridge portion 19 is set to have a width and a length that fit into the working hole 5, and has a shape protruding toward the opening hole 13 of the inner cover body 7.

  The cover working hole 21 is formed in a round hole shape penetrating the upper end portion of the ridge 19, and has a ring-shaped fitting groove 23 on its outer periphery, as shown in FIG. A cap 25 for closing the cover working hole 21 is screwed.

  Specifically, a male screw 23a is provided on the inner wall surface of the fitting groove 23, and a female screw 25a that can be screwed with the male screw 23a is provided on the inner side of the cap 25. Thus, the cap 25 can be removed by rotating the cap 25 counterclockwise.

  The cap 25 is provided with a tool hole 27 into which a hexagonal wrench is inserted at the center of the upper surface, and when the cap 25 is completely attached, the upper surface of the cap 25 does not protrude from the upper surface of the convex portion 19 of the inner cover body 9. It is set to be.

  A procedure for closing the work hole 5 provided in the utility pole 3 with the closing cover 1 configured as described above will be described.

  First, as shown in FIG. 5, a support tool 29 made in a cylindrical shape for temporary support is inserted into the cover working hole 21 of the inner cover body 9 in advance. A notch recess 31 is formed in the support tool 29, and this notch recess 31 is formed at the end of the work hole 5 when the inner cover body 9 is inserted vertically into the work hole 5 of the utility pole 3 as shown in FIG. 3. The remaining portion of the inner cover body 9 is a notch for allowing insertion into the inside by inserting the edge until it reaches the bottom of the notch recess 31 at the edge.

  At the same time, the support handle 33 is detachably bonded to the convex portion 19 of the inner cover body 9 by an adhesive means 35 such as a tape. At this time, as shown in FIG. 3, the support handle 33 is set to have a size that fits within the width a-1 of the work hole 5 when inserted in the vertical direction, and the vertical inner cover body 9 interferes with the work hole 5. Can be inserted without any problems.

  Next, after the inner cover body 9 that has been prepared is placed in the vertical direction and inserted into the work hole 5 with the support tool 29 as shown in FIG. The inner cover body 9 is temporarily supported while being pulled toward the front so as to fit into the hole 5 from the inside.

  Next, for example, the outer cover body 7 is suspended and supported by the wrist portion as shown in FIG. 6, and supported by the hand suspended by changing the position of the outer cover body 7 through the opening 13 in the other open hand. After holding the handle 33 and temporarily supporting the inner cover body 9 temporarily, the outer cover body 7 on the wrist is applied to the outside of the work hole 5 and brought into contact with one open hand.

  Subsequently, the mounting screw 17 is inserted through the screw hole 15 of the outer cover body 7 and temporarily screwed. After that, the mounting screw 17 is finally pulled by the tool 35 as shown in FIG. The inner cover body 9, the working hole opening peripheral edge 5a, and the outer cover body 7 can be integrally overlapped and joined together.

  Next, after removing the support tool 29 and the support handle 33, a filling material such as mortar is filled from the cover work hole 21 through a filling pipe (not shown) until the work hole 5 is sufficiently hidden. To do. Finally, after filling the water-stopping mortar, the filling pipe is removed, and then the cap 25 is screwed to complete the operation.

  The series of operations can be performed by one person, and the cover working hole 21 can be used for temporary support and for filling material filling.

  Further, even if the filling pressure acts on the cap 25, it does not come off easily because of the screw type, and a stable closed state can be obtained over a long period of time.

  In this case, it is possible to reliably prevent tampering such as removal by packing the filler in the tool hole 27 of the cap 25 and the head of the mounting screw 17.

The disassembled perspective view of the obstruction | occlusion cover concerning this invention. The front view of an obstruction | occlusion cover. Explanatory drawing which showed the relationship with the work hole when an inner side cover body is made into portrait orientation. Explanatory sectional explanatory drawing of the state which attached the cap to the work hole for covers. Explanatory drawing which shows the state which attached the support tool and the handle for support to the inner side cover body previously. The outline explanatory view of one process which showed the attachment state of the closure cover. Explanatory drawing which has tightened the attachment screw with the tool. The schematic explanatory drawing which shows the state which removed the support tool and the handle for support after completion of attachment of an outer side cover body. Explanatory drawing which showed the time of completion of attachment of an obstruction | occlusion cover. Explanatory drawing in which the work hole was provided in the utility pole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blocking cover 3 Electric pole 5 Work hole 5a Work hole opening periphery 7 Outer cover body 9 Inner cover body 13 Open hole 15 Screw hole 17 Installation screw 21 Cover work hole 25 Cap

Claims (1)

An inner cover body that closes a work hole that is opened vertically in a part of a steel pole, and an outer cover body that is provided from the outside of the work hole and is provided with a vertically open hole corresponding to the work hole, An outer cover body, a work hole opening peripheral edge of the utility pole, and a mounting screw for integrally joining the three of the inner cover body,
The inner cover body is provided with a work hole for a cover that is closed from the outside by a screw-type cap at an upper end portion facing the opening hole of the outer cover body. Hole closure cover.

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