JP2015035859A - Protection sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protection sheet capable of making a sheet main body in close contact with a coated object and surely coating the coated object, where the sheet main body can be easily and repeatedly attached or detached while securing flexibility and without need of alignment of an attaching or detaching part disposed at the sheet main body.SOLUTION: A protection sheet comprises: a sheet main body 2 obtained by cutting work in a prescribed shape; and an adhesive layer 3 disposed at whole area or a part of the sheet main body 2.

Description

  The present invention relates to a protective sheet that covers and insulates an object to be covered such as an electric wire installed on an electric pole, an electric device mounted on the electric pole, and a brace.

  Conventionally, when performing hot-wire work on an overhead distribution line, for safety, cover the objects to be covered (such as high-voltage charging parts and grounding parts) with an insulating protective sheet. Yes. And when covering a covering target object with a protective sheet, in recent years, live line work is widely performed without directly touching a live line part using a gripping tool for indirect live line work (so-called Yatco) that can be operated remotely. ing. Various protective sheets suitable for this work have been proposed.

  A conventional protective sheet of this type will be described with reference to FIGS. When these drawings are viewed from the front, the top, bottom, left, and right of the drawing are the top, bottom, left, and right of the seat body, the lower side of the drawing is one side of the seat body, and the upper side of the drawing is the other side of the seat body.

  As shown in FIG. 8, the conventional protective sheet 6 includes a sheet body 60 having a rectangular shape in plan view having insulating properties, and core members 61, 61 provided along side edges in a pair of longitudinal directions. The one with is known.

  First protrusions 62 and 62 are provided at the center of the pair of side edges of the sheet body 60. Further, a surface fastener F is provided on the inner surface of the first projecting piece 62. The other first projecting piece 62 is provided with a pair of small projecting second projecting pieces 63, 63, and a surface fastener F is provided on the outer surface of the second projecting piece 63, 63. Yes. A pair of bands 64 and 64 are provided on both sides of one side edge. The belts 64 and 64 are provided with surface fasteners F. In addition, a hook portion 65 that is hooked by a holding tool for indirect hot wire work (not shown) is provided at the center of the sheet body 60. The surface fasteners F are provided at locations other than those described above, that is, at the center portion of the seat body 60 and the left and right side portions, respectively.

  The other protective sheet 7 includes, for example, as shown in FIG. 9, a rectangular sheet main body 70 having an insulating property, and a core material 71 provided along the peripheral edge of the sheet main body 70. It has. Further, in the sheet main body 70, when the center line in the longitudinal direction is folded in half with the crease A, the upper and lower inner surfaces facing each other are closed at the opposing portions of the long side and the short side of the inner surface of the sheet main body 70, A rectangular first surface fastener F1 is disposed as appropriate. In addition, a plurality of (three) belts 72 each having a square third surface fastener F <b> 3 are attached to one side edge of the sheet body 70. In addition, a plurality of second surface fasteners F2 having the same shape as the third surface fasteners F3 are provided at positions corresponding to the third surface fasteners F3 of the sheet body 70 on the outer surface of the other side edge of the sheet body 70 ( 3) are arranged (see Patent Document 1).

  And when the protective sheet 7 of the said patent document 1 coat | covers the electric wire C constructed | assembled by the utility pole, first, as shown to Fig.10 (a), two holding tool T for indirect hot wire construction is shown first. , T are used to sandwich the end portions on both sides of the sheet body 70.

  Next, after the sheet main body 70 is lifted above the electric wire C, the sheet main body is viewed from the upper side of the electric wire C so that the longitudinal center line (fold A) is along the electric wire C, as shown in FIG. 70 is covered. At this time, the sheet body 70 is folded in half so that the inner surfaces of the sheet body 70 face each other.

  Then, using the two indirect hot wire holding tools T, T, the edge portions of the sheet main body 70 in a state of being folded and hooked are pulled and aligned. In other words, the first surface fastener F1 is aligned so that the opposing first surface fastener F1 can be reliably engaged.

  Thereafter, as shown in FIG. 10C, when both sides of the sheet main body 70 are pressed from the outside using the two indirect hot wire holding tools T, T, the first arranged on the inner surfaces of the sheet main body 70 are arranged. 1 sheet fasteners F1 and F1 are engaged with each other so that the sheet main body 70 can be fixed to the electric wire C.

  Further, as shown in FIG. 10 (d), the belt 72 of the sheet main body 70 is wound up by using the two indirect hot wire holding tools T and T, and the second surface fastener F2 of the sheet main body 70 is wound up. The sheet main body 70 is more firmly fixed to the electric wire C by engaging the third surface fastener F3.

Japanese Utility Model Publication No. 7-9011

  In any case, the conventional protective sheet is attached by folding the sheet body in half and hooking it on the object to be coated, and then indirectly activating the edge of the sheet body in the folded state. Pull and align using the wire construction gripper. That is, the opposing surface fasteners are aligned so that the opposing surface fasteners can be reliably engaged. Then, in the sheet body in which the edge portions are aligned, the outer surface of the folded sheet body is pressed using a gripping tool for indirect hot wire construction in order to bring the facing surface fasteners into surface contact with each other. It has been broken.

  These operations described above are performed remotely (position obliquely below the object to be coated) using an indirect hot-line work gripper, but the operations are very complicated and sophisticated. Technology is needed. For example, the hook-and-loop fastener itself is hard and it is difficult to fully engage the entire opposing surface. For this reason, when the surface fasteners are not securely engaged with each other, the sheet main body may slide off from the covering object. In addition, as the surface fastener, a belt-shaped one is often used in consideration of the labor for attaching and detaching. Therefore, the seat body is remoted so that the contact area is small and the pair of surface fasteners can be securely engaged. It is difficult to align the pair of hook-and-loop fasteners. In addition, since the surface fastener is provided in the sheet body, the flexibility of the sheet body originally held is lowered, and the adhesion of the sheet body to the object to be coated is further lowered.

  In addition, for example, in the case of strong winds, even if the sheet main body is not easily caught on the object to be coated, even if it is barely hooked, a gap is generated between the object to be coated and the sheet main body, and wind enters the gap, The edge portions are swollen by wind pressure, making it difficult to engage the surface fasteners. Further, when the surface fastener is engaged while receiving the wind pressure, the sheet main body swells, and therefore, the surface fastener is engaged in a pulled state, and the sheet main body may be wrinkled.

  In such a case, even if the sheet body is in a state of covering the covering object, the sheet body is lifted from the covering object by the wind pressure, and is displaced from the desired covering position. Further, if the sheet main body deviates from the position where the covering object is covered, a part of the covering object is exposed, and insulation against the covering object cannot be secured.

  As described above, when any of the protective sheets is fixed to the object to be coated, the surface fastener is provided on the sheet body, so that the flexibility of the engagement portion of the sheet body and the sheet body is reduced. In addition, since the positioning operation of the surface fastener and the engagement operation of the surface fastener are performed remotely while the sheet body is not in close contact with the object to be coated, a great deal of labor is required. There is a problem that it takes time.

  Therefore, in view of the above problems, the present invention can be easily and repeatedly attached and detached without aligning the attaching / detaching portion provided on the sheet main body while ensuring the flexibility of the sheet main body, and the sheet main body is in close contact with the covering object. Thus, an object of the present invention is to provide a protective sheet that can reliably cover an object to be coated.

  A protective sheet according to the present invention includes a sheet main body cut into a predetermined shape, and an adhesive layer provided on the entire surface or a part of the sheet main body.

  According to such a configuration, since the adhesive layer is provided on the entire surface or a part of the sheet main body, the sheet main body can be directly bonded to the object to be coated. Moreover, since the adhesive layer is more flexible than the hook-and-loop fastener, the flexibility of the sheet body can be ensured, and the adhesion to the object to be coated is increased. Therefore, no gap is formed between the sheet main body and the covering object, and the sheet main body can be cleanly fixed to the covering object without being affected by wind pressure and without causing wrinkles in the sheet main body. In addition, since the adhesive layer can be easily attached and detached between the adhesive layers and the attachment and detachment with respect to the sheet main body and the covering object, the hooking operation on the covering object, when hooked on the covering object, Positioning of the sheet main body with respect to the covering object and positioning of the opposing adhesive layer in a state where the sheet main body is hooked and folded in half can be easily performed.

  Moreover, as an aspect of the protective sheet according to the present invention, the adhesive layer may be configured to be disposed at a position excluding the peripheral portion of the sheet main body.

  In this case, since the contact area of the pressure-sensitive adhesive layer with respect to the covering object is increased, the sheet main body is fixed in a stable state without being displaced relative to the covering object. Further, in the sheet main body that is hooked on the covering object and folded in half, the peripheral edge portions of the opposing sheet main bodies are gripped and separated in different directions, thereby aligning with the covering object. Therefore, it is possible to easily change the position of the seat body and remove the seat body from the covering object.

  As another embodiment of the protective sheet according to the present invention, the adhesive layer is preferably composed of a gel-like adhesive sheet.

  In this case, since the pressure-sensitive adhesive layer is composed of a gel-like pressure-sensitive adhesive sheet, the flexibility of the sheet body can be further ensured, it is less affected by wind pressure, and does not cause wrinkles and is always stable. The coating object can be covered cleanly and reliably.

  According to the present invention, while ensuring the flexibility of the seat body, the seat body can be easily attached and detached repeatedly without positioning, and the seat body is brought into close contact with the object to be coated. An object can be reliably coated.

(A) is a top view of the protective sheet which concerns on one Embodiment of this invention, (b) is an expanded sectional view of the principal part of Fig.1 (a). The figure which shows the structure of the holding tool for indirect hot wire construction used when coat | covering the covering object with the protection sheet which concerns on the same embodiment. It is a figure which shows the usage condition of the protection sheet which concerns on the same embodiment, and is the figure which shows the state which lifted the protection sheet to the vicinity of the covering target object using the holding tool for indirect hot wire construction. It is a figure which shows the usage condition of the protective sheet which concerns on the same embodiment, and is the front view which shows the state which covered the protective sheet on the coating target object. The side view of FIG. It is a figure which shows the use condition of the protective sheet which concerns on the embodiment, and is a front view which shows the state which adhere | attaches the adhesive layer which opposes and fixes a protective sheet with respect to a coating | coated object. The side view of FIG. The figure which shows the conventional protective sheet. The figure which shows the other conventional protective sheet. (A)-(d) is a figure which shows the usage condition of the protection sheet | seat shown in FIG.

  A protective sheet according to an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the underline connector cover provided on the distribution line of the utility pole will be described as an example of the covering object.

  The protective sheet according to the present embodiment will be described with reference to FIG. The protective sheet 1 includes a sheet main body 2 cut into a rectangular shape, and an adhesive layer 3 having a reduced shape of the sheet main body 2 provided on the entire portion excluding the peripheral edge of the sheet main body 2. ing.

  The sheet body 2 is cut into a square shape or a rectangular shape in plan view, and has a multilayer structure of a synthetic fiber cloth and a synthetic resin with good insulation coated on the synthetic fiber cloth. The sheet body 2 has a fold A formed along the longitudinal center line. The sheet body 2 has a thickness dimension of about 0.8 mm.

  The pressure-sensitive adhesive layer 3 is composed of a gel-like pressure-sensitive adhesive sheet having a thickness dimension of about 0.3 mm. Therefore, since the adhesive layer 3 is more flexible than the hook-and-loop fastener, the flexibility of the sheet body 2 is ensured, and a gap is formed between the sheet body 2 and the covering object. There is no, and it is difficult to be affected by wind pressure. Thereby, when the seat body 2 is mounted, the covering object can be covered cleanly and surely in a stable state without wrinkles occurring in the seat body 2. Moreover, since it is the adhesion layer 3, while being removable repeatedly, the sheet | seat main body 2 can be directly adhere | attached on a coating | coated object. Therefore, the adhesive layer 3 can be easily attached and detached between the adhesive layers 3 and attached to and detached from the sheet main body 2 and the covering object, so that it can be hooked on the covering object and hooked on the covering object. At this time, the alignment of the sheet main body 2 with respect to the covering object and the alignment of the opposing pressure-sensitive adhesive layer 3 in a state of being folded by being hooked on the covering object can be easily performed.

  Moreover, the adhesive layer 3 also has water resistance, and may be washed with water, and the adhesiveness is not lost by rain water even after being attached to the covering object. Moreover, since the adhesion layer 3 has insulation, it can insulate and protect a covering thing.

  Moreover, since the adhesion layer 3 is an adhesive sheet, the contact area with respect to a coating target object is large, and it can maintain it in the stable state, without the sheet | seat main body 2 being displaced with respect to a coating target object. In addition, in the sheet body 2 that is hooked on the covering object and folded in half, the sheet body 2 with respect to the covering object can be obtained by gripping the peripheral edges of the opposing sheet body 2 and pulling them apart in different directions. The position change and the removal of the sheet main body 2 from the covering object can be easily performed.

  Here, the structure of the holding tool for indirect hot-wire work and the covering object (the connector cover for the underline provided on the distribution line of the utility pole) will be briefly described. As shown in FIG. 2, the indirect hot work gripping tool 4 includes an operation unit 41 disposed at the base end (hand side) of the support bar 40, and a gripping unit 42 disposed at the distal end of the support bar 40. In addition, a transmission rod 43 that transmits an operation force is provided so that the grip portion 42 is opened and closed by the operation of the operation unit 41.

  And if the operation part 41 is operated, the operating force will be transmitted to the holding part 42 via the transmission rod 43, and the holding part 42 will be opened and closed. As shown in FIGS. 3 and 5, the underline connector cover 5 includes a pair of cover bodies 51, 51 that are openably and closably connected via a hinge portion 50, an insertion cylinder portion 52 for drawing an electric wire C, and A drawing cylinder part 53 for drawing out the electric wire C is provided.

  Next, a usage mode will be described with reference to FIGS. First, in a state in which the protective sheet 1 is folded in two, both side portions hanging from the fold A are gripped by the gripping portions 42 and 42 of the two indirect hot-line work gripping tools 4 and 4, and the protective seat 1 is pulled up and placed near the connector cover 5 for the underline of the utility pole.

  Next, as shown in FIG. 4, the fold A of the protective sheet 1 is hooked on the underline connector cover 5 by using the two indirect hot-line work holding tools 4 and 4. At this time, as shown in FIG. 5, the upper portion of the adhesive layer 3 of the one folded sheet body 2 is in close contact with the back surface of the underline connector cover 5, while the other folded sheet body 2 is folded. The upper part of the adhesive layer 3 is in close contact with the front surface of the underline connector cover 5. For this reason, even if it is influenced by the wind, it is not necessary to keep the protective sheet 1 hooked on the underline connector cover 5 by using the two indirect hot-wire work holding tools 4 and 4.

  Further, in the state of FIG. 5, one folded sheet body 2 is positioned to hang down on the back side of the underline connector cover 5, and the other folded sheet body 2 is the underline connector cover 5. It will hang down on the front side of. The length of the sheet body 2 hanging down is sufficiently larger than the underline connector cover 5. That is, the sheet main body 2 can be covered and covered with the underline connector cover 5 to reliably insulate and protect the underline connector cover 5.

  Next, using the two indirect hot-line work holding tools 4, 4, the peripheral part of one folded sheet body 2 and the peripheral part of the other folded sheet body 2 are aligned. Then, the position of the sheet body 2 in a state of being hooked on the underline connector cover 5 is adjusted. By doing so, the underline connector cover 5 can be neatly covered with the underline connector cover 5 without the sheet body 2 being wrinkled.

  Thereafter, as shown in FIG. 6, the adhesive layer 3 of the folded sheet body 2 is in close contact with the underline connector cover 5 and the opposing surface of the folded sheet body 2 is in close contact. Become. Specifically, the grips 42 and 42 of the two indirect hot-line work holding tools 4 and 4 are opened and closed, and the two sides of the sheet main body 2 hanging down by the two indirect hot-line work holding tools 4 and 4 are removed. Pressing evenly from the outside, the adhesive layers 3 of the protective sheet 1 or the sheet body 2 and the adhesive layer 3 are pressed from outside to be adhered.

  By doing so, the underline connector cover 5 is covered with the protective sheet 1 in close contact with the underline connector cover 5 (see FIG. 7). Therefore, there is almost no gap between the surface of the underline connector cover 5 and the inner surface of the sheet body 2, and the sheet body 2 is not displaced due to the influence of wind pressure. Since there is no displacement, the underline connector cover 5 can be reliably insulated and protected by the sheet body 2.

  When the protective sheet 1 is removed from the underline connector cover 5 after the work is finished, the peripheral edges on both sides of the hung sheet body 2 are held by the holding parts 42 and 42 of the two indirect hot-line work holding tools 4 and 4. While holding, the sheet body 2 is detached from the underline connector cover 5 by pulling in different directions.

  As described above, according to the protective sheet of the present embodiment, the adhesive layer 3 is provided on the entire portion excluding the peripheral edge of the sheet body 2, thereby ensuring flexibility of the sheet body 2 and easily repeatedly attaching and detaching. As a result, the adhesion area to the coating object 5 is increased, and the sheet body 2 can be reliably coated on the coating object 5. By doing so, it is not necessary to maintain the protective sheet 1 that is hooked on the covering object 5. Further, the hooking operation on the covering object 5 and the alignment of the sheet main body 2 with respect to the covering object 5 when hooked on the covering object 5 are facilitated. Further, it is easy to align the opposing adhesive layer 3 in a state where it is hooked on the covering object 5 and folded in half. Therefore, the protective sheet 1 can be fixed to the covering object 5 easily and in a short time regardless of the level of skill of the operator with respect to the indirect hot wire gripping tool 4.

  The protective sheet according to the present invention can be variously modified without being limited to the above embodiment.

  For example, in the case of the above-described embodiment, the sheet body 2 has a rectangular shape in plan view, but is not limited thereto, and may be a non-circular sheet body such as a circle, an ellipse, or a pentagon.

  Moreover, in the case of the said embodiment, although the adhesion layer 3 was arrange | positioned with respect to the sheet | seat main body 2 in the position (center part) except the peripheral part of the sheet | seat main body 2, it is not limited to this, A sheet | seat You may arrange | position only to the peripheral part of the main body 2, and may arrange | position to the whole surface of the sheet | seat main body 2 in any one of dot shape, a grid | lattice shape, and a staggered shape.

  DESCRIPTION OF SYMBOLS 1 ... Protective sheet, 2 ... Sheet | seat body, 3 ... Adhesive layer, 4 ... Holding tool for indirect hot wire construction, 5 ... Covering object (connector cover for underlining), A ... Fold, C ... Electric wire

Claims (3)

A sheet body cut into a predetermined shape;
A protective sheet comprising an adhesive layer provided on the entire surface or a part of the sheet body.   The protective sheet according to claim 1, wherein the adhesive layer is disposed at a position excluding a peripheral edge portion of the sheet main body.   The protective sheet according to claim 1, wherein the adhesive layer is formed of a gel-like adhesive sheet.

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