JP6163394B2 - Utility pole guard plate - Google Patents

Description

  The present invention relates to a utility pole protective plate that covers an outer wall of a predetermined section of a utility pole in construction for moving the utility pole.

In construction where new utility poles are installed, or existing utility poles are relocated or removed, insulation failure may occur due to contact with nearby utility poles or electric wires near the end of the utility pole subject to construction. In addition, it is necessary to prevent the utility pole and the electric wire from being damaged.
Conventionally, according to such needs, a protective sheet is known that is wound around an outer wall of a utility pole and then fixed with a fixing tape (see, for example, Patent Document 1). In addition, as a method for fixing the sheet wound around the electric pole, a method using a rubber string or a hook-and-loop fastener is also commercially available.

JP 2009-297978 A

  Since the protective sheet of Patent Document 1 is formed by laminating thin sheet materials such as polyethylene, it is easily broken when in contact with other electric poles and electric wires, and is inferior in durability. If a torn sheet is used, insulation failure may occur, and there is a problem that once a torn protective sheet cannot be reused.

Also, paying attention to workability, the work to remove the protective sheet after construction in the construction to install a new power pole, or the work to attach the protection sheet before construction in the work to move or remove the existing power pole, There is a need to do. However, it is not easy to wind or unwind the protective sheet or the fixing tape especially on the pillar.
This invention is made | formed in view of the above-mentioned problem, The objective is to provide the utility pole guard plate which is excellent in durability and insulation, and improves workability | operativity on a pole.

The utility pole protective plate according to the present invention is “made of a material having a self-supporting rigidity and divided in the circumferential direction, so that the width of the opening formed by the division is wider than the outer diameter of the utility pole. "Cylindrical wall body that can be attached to the power pole from the radial direction by being elastically deformed" and "It protrudes from the inner wall of the cylindrical wall body and abuts on the outer wall of the power pole or is suspended on the top surface of the end of the power pole." Insulating support member that supports the cylindrical wall body around the utility pole ”and “ Lock member that connects both ends of the cylindrical wall body in the circumferential direction across the opening of the cylindrical wall body ” It is characterized by.

  Specifically, the phrase “having a self-supporting rigidity” for the configuration of the cylindrical wall means that, for example, a resin plate having a thickness of about several millimeters is employed, and the conventional laminated sheet structure is protected. The purpose is to exclude sheets and the like. Thus, when the cylindrical wall body formed with the material which has the rigidity which can stand independently is touched another electric pole or electric wire during construction, it does not break like a protection sheet and cannot be reused. Therefore, the durability of the utility pole guard plate can be improved.

  The utility pole protection plate is supported around the utility pole by a support member protruding from the inner wall of the cylindrical wall body contacting the outer wall of the utility pole or suspended on the top surface of the end of the utility pole. By supporting the cylindrical wall body away from the outer wall of the utility pole by the support member, a spatial distance between the cylindrical wall body and the utility pole is ensured. As an advantage of this, the creeping distance between the cylindrical wall body and the utility pole can be increased on average by setting the size, position, etc. of the support member. Therefore, the insulation property of the utility pole guard plate can be improved.

  Furthermore, the cylindrical wall can maintain its shape against its own gravity when the operator handles it on the pillar. Moreover, it can arrange | position around an electric pole by elastically deforming so that the width | variety of the opening formed in at least one place of the circumferential direction may be expanded beyond the outer diameter of an electric pole. Contrary to the installation, the work for removing the utility pole protective plate from the utility pole is also easy. Therefore, the utility pole protective plate of the present invention can improve the workability of attaching and detaching on the pole, in particular, compared to the work of winding or unwinding the protection sheet or fixing tape of the prior art.

The cylindrical wall body and the lock member are provided with hook portions that can be engaged with each other. By sliding the lock member in the axial direction of the cylindrical wall body, the hook portions of the cylindrical wall body and the lock member are engaged with each other. Match.
The cylindrical wall body includes a plurality of unit wall members having a circular cross-section in the radial direction and a connecting member that connects the plurality of unit wall members in the circumferential direction . Thereby, components can be shared. Further, the unit wall member and the connecting member are provided with hook portions that can engage with the adjacent connecting member and unit wall member.

The utility pole protective plate according to the present invention further includes a plurality of types of cylindrical walls having different development lengths in the circumferential direction in the connected state by providing a plurality of hook portions that can be selected by the connecting member to engage with the unit wall member. You may make it comprise a body. Thereby, according to the outer diameter of the electric pole of the part to which it applies, the same member can be used and the electric pole guard plate of a desired diameter size can be comprised. Therefore, the production and management of the product can be made more efficient, and the convenience at the construction site can be improved.

By the way, in general, the utility pole has a tapered shape in which the outer diameter of the main opening is larger than the outer diameter of the end opening. A plurality of such utility pole protection plates arranged side by side in the axial direction of the taper-shaped utility pole are “inner projections provided on the inner wall of the cylindrical wall body of the utility pole protection plate that is used on the former port side and has a relatively large inner diameter. ”And“ an outer protrusion provided on the outer wall of the cylindrical wall body of the utility pole protective plate that is used on the end side and has a relatively small inner diameter ”are engaged with each other and are prevented from separating in the axial direction. It is good also as an aspect.
Thereby, at the time of attaching / detaching to / from the utility pole, a plurality of utility pole protection plates can be handled as one body, and the workability is improved because it does not “detach”.

In this case, the inner protrusion is provided between the support members adjacent in the circumferential direction, and the outer protrusion of the upper utility pole protective plate corresponding to the inner protrusion protrudes on both sides in the circumferential direction of the inner protrusion. The relative rotation may be restricted by the support rib.

It is the (a) top view of the utility pole guard plate by 1st Embodiment of this invention, (b) The cross-sectional schematic diagram of the state attached to the utility pole. It is a schematic diagram explaining the operation | work process which attaches the utility pole guard plate by 1st Embodiment of this invention to a utility pole. It is the (a) top view of the unit wall member of the utility pole guard plate by 2nd Embodiment of this invention, (b) The front expanded view. It is a top view of the connection member and lock member of the utility pole guard plate by 2nd Embodiment of this invention. It is a cross-sectional schematic diagram of the state which attached the utility pole guard plate by 2nd Embodiment of this invention to the utility pole. FIG. 6 is a view in the direction of arrow VI in FIG. 5. It is a VII direction arrow line view of FIG. It is a VIII direction arrow line view of FIG. It is a cross-sectional schematic diagram of the state which attached the utility pole guard plate by 3rd Embodiment of this invention to the utility pole. FIG. 10 is a view in the direction of the arrow X in FIG. 9. It is a XI direction arrow line view of FIG. It is a XII direction arrow directional view of FIG. It is a cross-sectional schematic diagram which shows the state at the time of the operation | work which attaches the utility pole guard plate by 3rd Embodiment of this invention to a utility pole. It is (a) top view and (b) perspective view of the utility pole guard plate by 4th Embodiment of this invention. It is a top view of the utility pole guard plate by the modification of 1st Embodiment of this invention.

Hereinafter, utility pole protection plates according to a plurality of embodiments of the present invention will be described with reference to the drawings. This utility pole protective plate is an insulation that is generated when a part near the end of a utility pole that is the subject of construction touches a neighboring utility pole or electric wire in a construction where a new utility pole is set up or an existing utility pole is moved or defeated. In order to prevent defects, telephone poles, and electric wires, the outer wall of a predetermined section near the end of the telephone pole is covered.
In the description of the plurality of embodiments, substantially the same components are denoted by the same reference numerals and description thereof is omitted. The second and third embodiments correspond to embodiments for carrying out the invention according to the claims.

(First embodiment)
The utility pole protective plate of 1st Embodiment is demonstrated with reference to FIG. 1, FIG.
As shown in FIG. 1, the utility pole protection plate 10 is attached to the outer wall of a predetermined section near the end 91 of the utility pole 9. In general, the utility pole 9 is formed in a taper shape in which the outer diameter of the main port 92 on the ground side is larger than the outer diameter of the end port 91 on the top side, and the utility pole protection plate 10 has such a tapered utility pole. 9 is assumed to be attached.

The utility pole protection plate 10 includes a cylindrical wall body 11, support members 15 and 16, and a lock member 2.
The cylindrical wall 11 is made of a resin material having a plate thickness of about several mm, and is formed in a C-shaped arc shape whose shape viewed from the direction of the axis O exceeds a central angle of 180 °. That is, the cylindrical wall body 11 is divided at one place in the circumferential direction to form an opening 13. At both ends in the circumferential direction facing each other with the opening 13 therebetween, hook portions 12 are formed that are folded back in a J-shape from the inner diameter to the outer diameter. Moreover, the radial cross-sectional shape of the cylindrical wall 11 is substantially constant in the axial direction.

Since the cylindrical wall 11 is formed to have a plate thickness of about several millimeters, it has a rigidity capable of supporting itself. Thereby, unlike the protection sheet | seat of a prior art, the utility pole protection board 10 can maintain its own shape in the operation | work on a pole.
Further, the cylindrical wall body 11 can be elastically deformed so that the width of the opening 13 is wider than the outer diameter of the utility pole 9. As a result, as shown in FIG. 2, the cylindrical wall body 11 can be fitted around the utility pole 9 from the outside of the utility pole 9 while expanding the width of the opening 13 to be greater than or equal to the outer diameter of the utility pole 9.

  The support members 15 and 16 are made of an insulating material such as rubber, and protrude from the inner wall of the cylindrical wall body 11 in the radially inward direction. The support member 15 is set so that the protruding amount from the inner wall of the cylindrical wall 11 is larger than that of the support member 16. In a state where the utility pole protection plate 10 is attached to the utility pole 9, the support member 15 comes into contact with the outer wall of the utility pole 9 on the end 91 side, and the support member 16 comes into contact with the outer wall of the utility pole 9 on the source port 92 side. In the present embodiment, three support members 15 and 16 are provided at substantially equal intervals in the circumferential direction of the cylindrical wall body 11.

  The lock member 2 is a resin material having a thickness of about several millimeters, like the cylindrical wall body 11, and is formed in an arc shape when viewed from the direction of the axis O, and extends across the opening 13 of the cylindrical wall body 11. The both ends in the circumferential direction of the wall 11 are connected. At both ends in the circumferential direction of the lock member 2, hook portions 22 that are folded back in a J shape from the radially outer side to the radially inner side and engageable with the hook portions 12 of the cylindrical wall body 11 are formed.

When the utility pole protection plate 10 is attached to the utility pole 9, the width of the opening 13 of the cylindrical wall body 11 is expanded beyond the outer diameter of the utility pole 9, and the utility pole 9 is fitted around the utility pole 9 from the radially outer side of the utility pole 9. Thereafter, the locking member 2 is slid in the axial direction of the cylindrical wall body 11, and the hook portion 22 of the locking member 2 is engaged with the hook portion 12 of the cylindrical wall body 11, so that the cylindrical wall body 11 and the locking member are engaged. 2 forms a ring. Thus, the cylindrical wall 11 is locked so that the opening 13 does not open.
Since the utility pole 9 has a tapered shape that extends from the end 91 side to the original entrance 92 side, the utility pole protection plate 10 with the support members 15 and 16 in contact with the outer wall of the utility pole 9 is held without sliding down due to gravity.

The utility pole protection plate 10 is used in the following manner, for example, in a construction of “standing a new utility pole, rewiring an electric wire wired to an existing old utility pole, and removing the old utility pole”.
On the ground, the utility pole guard plate 10 is attached to a new utility pole.
→ After setting up a new utility pole, remove the utility pole guard plate 10 from the utility pole on the pole.
→ Move the wiring from the old utility pole to the new utility pole.
→ Attach the utility pole guard plate 10 to the old utility pole on the pole.
→ Defeat the old utility pole and remove the utility pole protection plate 10 from the old utility pole on the ground.
The utility pole protection plate 10 is attached to a predetermined section near the end 91 of the utility pole 9 which is relatively likely to come into contact with another utility pole or electric wire during construction.

The effect of the utility pole protection plate 10 of the first embodiment having the above configuration will be described in comparison with the protection sheet of the prior art.
(1) Since a conventional protective sheet is formed by laminating thin sheet materials, it is easily broken when it comes into contact with another electric pole or electric wire during construction, and is inferior in durability. A protective sheet that has been torn once is not reusable because the torn part may result in poor insulation.
On the other hand, since the utility pole protection plate 10 of this embodiment has the rigidity which can become independent, when it contacts with another utility pole or an electric wire, it is hard to tear easily. Therefore, the utility pole protective plate 10 has improved durability and can be used repeatedly.

(2) Whereas the conventional protective sheet is in direct contact with the outer wall of the utility pole 9, the utility pole protective plate 10 of the present embodiment has the cylindrical wall body 11 formed by the insulating support members 15 and 16. By being supported in a state of being separated from the utility pole 9, a spatial distance between the cylindrical wall body 11 and the utility pole 9 is ensured. Furthermore, the support members 15 and 16 support the power pole guard plate 10 efficiently while minimizing the total area in contact with the power pole 9, so that there are two well-balanced places in the height direction and three places in the circumferential direction. Has been placed. Therefore, the creeping distance between the cylindrical wall 11 and the utility pole 9 becomes longer on average. Therefore, the insulation of the utility pole guard plate 10 can be improved.
Furthermore, in this embodiment, since the support members 15 and 16 are formed of a rubber material, a suitable contact state is realized by elastically deforming the shape of the contact portion according to the radius of the power pole 9 that contacts. be able to.

  (3) The work of attaching the conventional protective sheet to the utility pole was to wrap the belt-shaped protective sheet around the utility pole, and then to fix it by winding a fixing tape. Since the protective sheet does not have a self-supporting rigidity, it is necessary to work while always supporting any part, and the workability on the column is particularly bad. On the other hand, in the utility pole protection plate 10 of the present embodiment, the cylindrical wall body 11 having a self-supporting rigidity is fitted around the utility pole 9 by opening the width of the opening 13 by elastic deformation, and then the support members 15, 16. By engaging the hook portion 12 of the cylindrical wall body 11 and the hook portion 22 of the lock member 2 while abutting the outer wall of the utility pole 9, it can be easily attached to the utility pole 9. Therefore, workability on the pillar is improved.

(Second Embodiment)
Next, the utility pole protective plate of 2nd Embodiment is demonstrated with reference to FIGS. 3-8. The utility pole protection plates 301, 302, and 303 (see FIGS. 5 to 8) of the second embodiment are cylindrical wall bodies 31 (reference numeral “31” is equivalent to FIG. 5) corresponding to the cylindrical wall body 11 of the first embodiment. -Three types of cylindrical wall bodies 311, 312, and 313 shown in FIG. 8 are summarized, and are characterized by being configured by combining a plurality of unit wall members and connecting members.

  In particular, in the present embodiment illustrated in FIGS. 3 to 8, the cylindrical wall body 31 is configured by alternately connecting the three unit wall members 3 </ b> A, 3 </ b> C, 3 </ b> E and the two connecting members 4 </ b> B, 4 </ b> D. Yes. The three unit wall members 3A, 3C, and 3E have the same form, and the two connecting members 4B and 4D have the same form. Here, “identical” means that the same part is manufactured, and does not mean that there is no manufacturing variation. Furthermore, in this embodiment, the members as the connecting members 4B and 4D are also used as the lock member 4F.

In the following description, the three unit wall members 3A, 3C, and 3E are collectively referred to as “3”, and the two connecting members 4B and 4D and the lock member 4F are collectively referred to as “4”. The material of the unit wall member 3 and the connecting member / lock member 4 and the approximate plate thickness are the same as those of the cylindrical wall body 11 and the lock member 2 of the first embodiment.
Further, with respect to attachment to the utility pole 9, the opening width of the cylindrical wall body 31 is expanded by elastic deformation and fitted around the utility pole 9 from the radially outer side, and the lock member 4 </ b> F is slid in the axial direction of the cylindrical wall body 31. The hook portions are engaged with each other to form an annular shape, which is the same as in the first embodiment.

As shown in FIG. 3, the unit wall member 3 has an arc shape having a predetermined central angle θ ₃ as viewed from the direction of the axis O, and is formed at both ends in the circumferential direction from the inner diameter to the outer diameter. A hook portion 32 that is folded back in a letter shape is formed. The radial cross-sectional shape of the unit wall member 3 is substantially constant in the axial direction. Note that the front view of FIG. 3B shows the length in the axial direction (vertical direction in the figure) in a shortened manner, and actually the axial direction is longer than the length of the arc (horizontal direction in the figure). The length is long enough.

  A support rib 33 projecting from the inner wall is formed over the entire length of the unit wall member 3 in the circumferential direction, and the support members 35 and 36 are illustrated so as to sandwich the support rib 33 from both sides in the circumferential direction. It is attached with fixing screws that do not. The support members 35 and 36 can adjust the protrusion amount in the radial direction within a range of ΔH by changing the contact length with the support rib 33 by adjusting the fastening position of the fixing screw. Depending on the outer diameter of the utility pole 9 to which the utility pole protection plates 301, 302, 303 are attached, the protruding amount of the support member 35 is increased on the end 91 side having a smaller outer diameter, and on the side of the main port 92 having a larger outer diameter. By reducing the protruding amount of the support member 36, the support members 35 and 36 can be suitably brought into contact with the outer wall of the utility pole 9.

As shown in FIG. 4, the connecting and locking member 4 has a circular arc shape having a predetermined central angle θ ₄ when viewed from the direction of the axis O. Precisely, a bent wall having a substantially constant thickness is continuous in the circumferential direction, and has an arc shape as a whole. Since the connecting member and lock member 4 has a substantially constant radial cross-sectional shape in the axial direction, a front view corresponding to FIG. 3B of the unit wall member 3 is omitted.
The connecting / locking member 4 is formed symmetrically about the center rib 41, and a first hook portion 42, an intermediate wall 43, and a second hook portion 44 are provided in this order from the center rib 41 side. Each of the first hook portion 42 and the second hook portion 44 is folded back in a J shape from the radially outer side to the radially inner side, and can be engaged with the hook portion 32 of the unit wall member 3. As described above, the connecting member and lock member 4 of the second embodiment is provided with a plurality of hook portions 42 and 44 that can be engaged with the hook portion 32 of the unit wall member 3 so as to select which one to use. It is characterized by that.

  With this configuration, when the cylindrical wall body 31 is configured by alternately connecting the unit wall members 3A, 3C, and 3E and the connection members 4B and 4D, the connection state is determined by selecting the hook portions 42 and 44 used for engagement. A plurality of types of cylindrical wall bodies 31 having different circumferential development lengths can be formed. Here, the “deployment length” means the length in the circumferential direction when the substantially C-shaped cylindrical wall body 31 is deployed.

Next, with reference to FIGS. 5 to 8, the three types of utility pole protection plates 301, 302, and 303 will be described. 6 to 8 are arrow views of the utility pole protection plates 301, 302, and 303 viewed from the respective members alone, and illustration of other members that can be seen behind is omitted.
As shown in FIG. 5, utility pole protection plates 301, 302, and 303 are sequentially applied from the end 91 side having a small outer diameter to the main port 92 side having a large outer diameter, and are of three types having different deployment lengths. Cylindrical wall bodies 311, 312, and 313. The utility pole protection plates 302 and 303 include common support members 35 and 36. The utility pole protection plate 301 used on the end 91 side is provided with a suspension support member 39 having a larger amount of protrusion in the radial direction than other support members, instead of the upper support member 35. The suspension support member 39 supports the cylindrical wall body 311 around the utility pole 9 by being suspended on the top surface of the end 91 of the utility pole 9. The suspension support member 39 is included in the “support member” recited in the claims.

  Assuming that the outer diameters of the utility poles 9 at the heights at which the support members 35 of the utility pole protection plates 301, 302, and 303 abut each other are the applicable outer diameters D1, D2, and D3, respectively, D2 = 215 mm, D3 = 240 mm). A protective cap 8 is attached to the end of the utility pole protective plate 301 on the end 91 side.

As shown in FIG. 5, when the utility pole protection plate is attached to a relatively long range, a plurality of utility pole protection plates may be attached in series. At this time, there is a possibility that the outer diameter difference between the end port 91 side and the main port 92 side in the attachment range exceeds the adjustable range depending on the protruding amount of the support members 35 and 36. Further, if the protruding amount of the support member 35 is extremely large on the end 91 side, the outer diameter of the utility pole protection plate is excessively larger than the outer diameter of the utility pole 9, and contacts with the surrounding utility poles and electric wires during construction. This is not desirable because it causes adverse effects such as being easy to do.
On the other hand, using several types of utility pole protective plates having different diameter sizes according to the applicable outer diameter is inefficient in terms of product manufacture and management. The same applies to the case where it is necessary to use different utility pole protection plates for different utility poles having different outer diameters.

Therefore, in the second embodiment, the cylindrical wall body 31 is configured by alternately connecting the unit wall members 3A, 3C, and 3E and the connecting members 4B and 4D, and the connecting members 4B and 4D are adjacent units. By adopting a configuration in which a plurality of hook portions 42, 44 used for engagement with the wall members 3A, 3C, 3E are selectable, a more preferable form of the utility pole protection plate is provided.
6-8, the cylindrical wall bodies 311, 312, and 313 of the utility pole protection plates 301, 302, and 303 include a unit wall member 3A, a connecting member 4B, a unit wall member 3C, a connecting member 4D, and a unit wall. The five members 3E are the same in that they are connected in the circumferential direction in this order. Moreover, the unit wall member 3A and the unit wall member 3E at both ends of the cylindrical wall bodies 311, 312, and 313 are common in that the lock member 4F connects them.
6-8, illustration of cross-sectional hatching is omitted for ease of viewing.

  The cylindrical wall body 311 of the utility pole protective plate 301 shown in FIG. 6 is connected in both the circumferential directions when engaged with the hook portions 32 of the unit wall members 3A, 3C, and 3E in the connecting members 4B and 4D and the lock member 4F. The first hook portion 42 is selected. Thereby, the cylindrical wall body 311 of the minimum expansion | deployment length corresponding to the applicable outer diameter D1 is obtained.

  The cylindrical wall body 312 of the utility pole protection plate 302 shown in FIG. 7 is connected to one of the circumferential members in the engagement with the hook portions 32 of the unit wall members 3A, 3C, and 3E in the connection members 4B and 4D and the lock member 4F. The first hook portion 42 is selected, and the second hook portion 44 is selected for the other connection in the circumferential direction. At this time, one intermediate wall 43 of the connecting members 4 </ b> B and 4 </ b> D and the lock member 4 </ b> F forms a part of the inner wall of the cylindrical wall body 312. Thereby, the cylindrical wall body 312 having an intermediate developed length corresponding to the applied outer diameter D2 is obtained.

  The cylindrical wall body 313 of the utility pole protection plate 303 shown in FIG. 8 is connected in both the circumferential directions when engaged with the hook portions 32 of the unit wall members 3A, 3C, and 3E in the connecting members 4B and 4D and the lock member 4F. The second hook portion 44 is selected. At this time, the intermediate walls 43 of both the connecting members 4 </ b> B and 4 </ b> D and the lock member 4 </ b> F form a part of the inner wall of the cylindrical wall body 313. Thereby, the cylindrical wall body 313 having the maximum developed length corresponding to the applied outer diameter D3 is obtained.

As described above, in the second embodiment, there are three types, assuming that the common hook portions 42 and 44 are selected in the connection between the unit wall members 3A, 3C, and 3E and the connection members 4B and 4D and the lock member 4F. The utility pole protective plates 301, 302, and 303 are configured.
If the connecting members 4B and 4D and the lock member 4F are allowed to select the first hook portion 42 or the second hook portion 44 separately, it is possible to configure more types of utility pole protection plates. .

In addition to the effects (1) to (3) of the utility pole protection plate 10 of the first embodiment, the utility pole protection plates 301, 302, and 303 of the second embodiment have the following effects (4) to (6).
(4) The cylindrical wall body 31 is configured by combining unit wall members 3A, 3C, and 3E and connecting members 4B and 4D. Thereby, the size of each member can be made small, for example, it can manufacture with a smaller resin molding equipment. Moreover, the storage space for the product can be reduced as compared with the integral cylindrical wall body 11 of the first embodiment. Furthermore, by making the plurality of unit wall members 3A, 3C, 3E, the plurality of connecting members 4B, 4D, and the lock member 4F have the same specifications, it is possible to share parts.

(5) The connecting members 4B and 4D are provided with a plurality of hook portions 42 and 44 so as to be selectable as hook portions that can be engaged with the hook portions 32 of the adjacent unit wall members 3A, 3C, and 3E. Depending on which of the hook portions 42 and 44 is selected, a plurality of types of cylindrical wall bodies 311, 312, and 313 having different development lengths can be obtained using the same member. Thereby, according to the outer diameter of the utility pole 9 of the part to which it applies, the same member can be used and the utility pole guard plates 301, 302, and 303 of a desired diameter size can be comprised.
As for the assembly of the unit wall members 3A, 3C, 3E and the connecting members 4B, 4D, they may be assembled at the factory according to the prior order from the construction contractor and delivered in the state of the cylindrical wall bodies 311, 312, 313. . Alternatively, the unit wall members 3A, 3C, 3E and the connecting members 4B, 4D are delivered to the factory builder as a single unit, and the construction builder confirms the outer diameter of the utility pole 9 to be constructed on site, while the unit wall member 3A 3C, 3E and the connecting members 4B, 4D may be assembled.

  (6) The support members 35 and 36 are provided so that the amount of protrusion in the radial inward direction from the inner wall of the unit wall member 3 can be adjusted. Thereby, according to the magnitude | size of the taper of the utility pole 9 attached, the difference of the protrusion amount of the support member 35 by the side of the end 91 and the protrusion amount of the support member 36 by the side of the original port 92 can be adjusted easily. .

(Third embodiment)
Next, the utility pole protective plate of 3rd Embodiment is demonstrated with reference to FIGS. 9-12. 10 to 12 are arrow views of the utility pole protection plates 501, 502, and 503 viewed from the respective members alone, and the illustration of other members that can be seen behind is omitted.
The utility pole protection plates 501, 502, and 503 of the third embodiment differ from the utility pole protection plates 301, 302, and 303 of the second embodiment in that the position and number of support members in the cylindrical wall body are different, and the cylindrical shape The basic configuration is the same except that the inner protrusion 57 or the outer protrusion 58 is provided on the wall body. However, in the second embodiment, the three utility pole protection plates 301, 302, 303 are independent one by one, whereas in the third embodiment, the three utility pole protection plates 501, 502, 503 are integrated in the axial direction. It is characterized by being connected.

  The reference numerals of the constituent elements in the third embodiment are shown by substituting “5” for the first “3” of the corresponding constituent elements in the second embodiment. Moreover, the connection member and lock member 4 is substantially the same as that of the second embodiment. Hereinafter, overlapping description of the same parts as those of the second embodiment will be omitted, and parts different from those of the second embodiment will be mainly described.

  As shown in FIG. 9, utility pole protection plates 501, 502, and 503 are sequentially applied from the end 91 side having a small outer diameter to the main port 92 side having a large outer diameter, and are of three types having different deployment lengths. The cylindrical wall bodies 511, 512, and 513 are included. A suspension support member 59 is provided on the upper side of the cylindrical wall body 511 of the utility pole protection plate 501 on the end 91 side as a support member, and the cylindrical wall body 512 and the main entrance 92 side of the middle utility pole protection plate 502 are provided. A support member 56 is provided on the lower side of the cylindrical wall body 513 of the utility pole protection plate 503. The suspension support member 59 is suspended from the top surface of the end 91 of the utility pole 9, and the support member 56 is in contact with the outer wall of the utility pole 9.

Further, an inner protrusion 57 is provided on the inner wall at the upper end of the cylindrical wall body 512 of the intermediate power pole protection plate 502 and the cylindrical wall body 513 of the power pole protection plate 503 on the main port 92 side. An outer protrusion 58 is provided on the outer wall at the lower end of the cylindrical wall body 511 of the utility pole protection plate 501 and the cylindrical wall body 512 of the intermediate utility pole protection plate 502. The inner protrusion 57 and the outer protrusion 58 are provided at corresponding positions in the circumferential direction so as to be engageable with each other. The engagement of the inner protrusion 57 and the outer protrusion 58 restricts the three utility pole protection plates 501, 502, and 503 from separating in the axial direction. That is, the three utility pole protection plates 501, 502, and 503 are handled in an integrally connected state.
The inner protrusion 57 and the outer protrusion 58 may be retrofitted to the cylindrical wall bodies 511, 512, and 513, for example, by ultrasonic welding.

As shown in FIGS. 10, 11, and 12, the cylindrical wall bodies 511, 512, and 513 are formed by connecting the unit wall members 5A, 5C, and 5E with the hook portions 42 and 44 of the connecting members 4B and 4D and the lock member 4F. In connection, it is comprised by changing the selection of the hook parts 42 and 44 engaged with the hook part 52 of unit wall member 5A, 5C, 5E similarly to 2nd Embodiment.
On the inner walls of the unit wall members 5A, 5C, and 5E, two support ribs 53 are formed in the circumferential direction at predetermined angular intervals over the entire length in the axial direction. Six suspension support members 59 are attached to the six support ribs 53 in the utility pole protection plate 501, and six support members 56 are attached to the utility pole protection plates 502 and 503.

The inner protrusions 57 on the utility pole protection plates 502 and 503 and the outer projections 58 on the utility pole protection plates 501 are the support members 56 adjacent to each other in the circumferential direction in the unit wall members 5A, 5C, and 5E, or the suspension support members 59, respectively. It is provided between each other.
As described above, the utility pole protection plates 501, 502, and 503 are “the inner protrusions 57 provided on the cylindrical wall body of the utility pole protection plate that is used on the side of the main opening 92 and has a relatively large inner diameter”, The outer protrusions 58 "provided on the cylindrical wall body of the utility pole protective plate having a relatively small inner diameter are used to engage with each other.

As shown in FIGS. 11 and 12, support ribs 53 are formed on both sides of the inner protrusion 57 in the circumferential direction. Therefore, when the outer protrusion 58 is engaged with the inner protrusion 57, both ends in the circumferential direction of the outer protrusion 58 are By abutting against the support rib 53, relative rotation between the utility pole protection plates 501, 502, and 503 is restricted.
In the work of attaching the utility pole protection plates 501, 502, 503 of the third embodiment to the utility pole, as shown in FIG. 13, the end of the utility pole 9 with the three utility pole protection plates 501, 502, 503 overlapped in the axial direction. 9, the utility pole protection plates 502 and 503 are sequentially extended in the axial direction to a height at which the inner protrusion 57 engages with the outer protrusion 58 (see arrows S1 and S2). can do.

The utility pole protection plates 501, 502, and 503 of the third embodiment have the following effects (7) to (9) in addition to the effects of the utility pole protection plates 301, 302, and 303 of the second embodiment.
(7) When the inner projection 57 of the utility pole protection plate on the side of the main port 92 and the outer projection 58 of the utility pole protection plate on the end 91 side are engaged with each other, the three utility pole protection plates 501, 502, and 503 are Detachment in the axial direction is restricted. As a result, the power pole protection plates 501, 502, and 503 can be handled as a unit at the time of attaching or detaching to the power pole, and the workability is improved because the power pole protection plates 501, 502, and 503 are not “detached”.

  (8) The three utility pole protection plates 501, 502, and 503 can be handled as an integral unit without being separated. In addition, the three utility pole protection plates 501, 502, and 503 can be stored compactly by overlapping. Therefore, convenience during transportation and storage is improved.

  (8) Since the relative rotation between the utility pole protection plates 501, 502, and 503 is restricted while the outer projection 58 is engaged with the inner projection 57, the utility pole protection plates 502, 503 are stretched or contracted when removed. In the work, it can be moved straight in the axial direction. Therefore, twist can be prevented and workability is improved.

(Fourth embodiment)
Next, the utility pole protective plate of 4th Embodiment is demonstrated with reference to FIG.
In the utility pole protective plate 60 shown in FIG. 13, the cylindrical wall body 51 is formed over a range of about 360 ° in the circumferential direction. Moreover, the cylindrical wall 61 is divided at one place in the circumferential direction, and an opening is formed when it is opened. At one end in the circumferential direction of the cylindrical wall body 61, a hook portion 62 is formed that is folded back in a J-shape from the inner diameter to the outer diameter. The other circumferential end is formed with a diameter from the outer diameter. A hook portion 64 folded in a J shape is formed on the inner side. When the hook portion 62 and the hook portion 64 are engaged with each other, the cylindrical wall body 61 has an annular shape.

  About the material of the cylindrical wall body 61, and approximate plate | board thickness, it is the same as that of the cylindrical wall body 11 of 1st Embodiment. In addition, the cylindrical wall body 61 is elastically deformed so that the width of the opening is widened in the state where the hook portions 62 and 64 are separated from each other, and extends around the utility pole 9 from the radially outward direction. Fitted. Thereafter, when the hook portion 62 and the hook portion 64 are engaged with each other, the support members 15 and 16 provided on the inner wall of the cylindrical wall body 61 come into contact with the outer wall of the utility pole 9, and the cylindrical wall body 61 is in contact with the utility pole 9. Attached to.

That is, in the fourth embodiment, the utility pole protective plate 60 is configured only by the cylindrical wall body 61 and the support members 15 and 16 without using a lock member as in the first to third embodiments.
The utility pole guard plate 60 of the fourth embodiment has a simpler configuration than the first embodiment, and can achieve the same effects (1) to (3) as the first embodiment.

(Other embodiments)
(A) A modification of the support member based on the first embodiment will be described with reference to FIG. As shown in FIG. 1A, the support members 15 and 16 of the first embodiment are arranged at substantially equal intervals at three locations in the circumferential direction, and can support the utility pole guard plate 10 on the utility pole 9 with good balance. .
On the other hand, like the utility pole protection plate 10A shown in FIG. 15 (a), the supporting members 17 are provided at two opposite circumferential positions while sufficiently securing the length of the arc portion that contacts the outer wall of the utility pole 9. It is good also as a structure to provide. Alternatively, as in the utility pole protection plate 10B shown in FIG. 15B, an arc portion having a central angle exceeding 180 ° is set as a contact portion with the outer wall of the utility pole 9, and the support member 18 is provided only at one place in the circumferential direction. It is good also as a structure. Further, the number of supporting members in the height direction is not limited to two places shown in FIG.

(A) In the second and third embodiments, the cylindrical wall body 31 (51) includes three unit wall members 3A, 3C, 3E (5A, 5C, 5E) and two connecting members 4B, 4D. Has been. The number of unit wall members and connecting members is not limited to this, and may be set as appropriate.
(C) In the second and third embodiments, the connecting members 4B and 4D are provided with two hook portions 42 and 44 in one circumferential direction. The number of hook portions that can be selected for engagement with the unit wall member is not limited to this, and may be three or more.
(D) As in the second and third embodiments, the lock member 4F and the connection members 4B and 4D are not limited to the combined use, and only the lock member 4F may be configured as a dedicated member.
(E) With respect to the third embodiment, the number of utility pole protection plates arranged in the axial direction is not limited to three, and may be any number of two or more.

(F) According to the provisions of the Ministry of Health, Labor and Welfare, the terms “protector” and “protector” for electrical insulation are used as follows. The “armor” is attached to a charging circuit where there is a risk of an electric shock for an operator, and a guarantee of insulation performance is required by the Ministry of Health, Labor and Welfare certification. “Protective equipment” is used to prevent electric shock of workers during construction work, etc. performed close to the charging circuit, and does not require a guarantee by the Ministry of Health, Labor and Welfare. The utility pole protective plate of the above embodiment is basically assumed to be used as a “protector”, but the present invention is not limited to this, and the utility pole protective plate of the present invention may be used as a “protector”.
As mentioned above, this invention is not limited to such embodiment, In the range which does not deviate from the meaning of invention, it can implement with a various form.

10, 301, 302, 303, 501, 502, 503, 60 ... utility pole protective plate,
11, 311, 312, 313, 511, 512, 513, 61 ... cylindrical wall,
12, 32, 52, 54... (Hook part of cylindrical wall body, unit wall member),
13 ... Opening,
15, 16, 17, 18, 35, 36, 56 ... support members,
39, 59 ... suspension support members (support members),
2, 4F ... Lock member,
22, 42, 44... Hook part (of connecting member, locking member),
3A, 3B, 3C ... unit wall member,
4B, 4D ... connecting member,
9 ... telephone pole, 91 ... end.

Claims (4)

In construction for moving the utility pole (9), it is a utility pole protection plate (301, 302, 303, 501, 502, 503) covering the outer wall of a predetermined section of the utility pole,
By being made of a material having rigidity that can stand by itself and being divided at one place in the circumferential direction, and elastically deforming so that the width of the opening (13) formed by the division is wider than the outer diameter of the utility pole. Cylindrical wall bodies (311, 312, 313, 511, 512, 513) that can be attached to the utility pole from the radial direction;
An insulating support that protrudes from the inner wall of the cylindrical wall body and supports the cylindrical wall body around the utility pole by contacting the outer wall of the utility pole or suspending from the top surface of the end (91) of the utility pole Members (35, 36, 39, 56, 59);
A locking member (4F) for connecting both ends of the cylindrical wall body in the circumferential direction across the opening of the cylindrical wall body;
Equipped with a,
The cylindrical wall body and the lock member are provided with hook portions (32, 42, 44, 52) that can be engaged with each other, and by sliding the lock member in the axial direction of the cylindrical wall body. The cylindrical wall body and the hook portions of the lock member are engaged with each other,
The cylindrical wall body is
A plurality of unit wall members (3A, 3C, 3E) having a circular cross-section in the radial direction;
Connecting members (4B, 4D) for connecting the plurality of unit wall members in the circumferential direction;
Including
The utility wall protection plate, wherein the unit wall member and the connecting member are provided with hook portions (32, 42, 44, 52) that can be engaged with the adjacent connecting member and the unit wall member. . The connecting member is
A plurality of hook portions (42, 44) that can be engaged with the hook portions (32, 52) of the adjacent unit wall members are provided so as to be selectable in at least one of the circumferential directions,
2. The utility pole protection plate according to claim 1 , wherein a plurality of types of the cylindrical wall bodies having different development lengths in the circumferential direction in a connected state are configured by selection of the hook portion. The utility pole protection plate according to claim 1 or 2 , wherein a plurality of outer poles of the main port (92) are arranged side by side in the axial direction of the tapered power pole larger than the outer diameter of the end port,
An inner protrusion (57) provided on the inner wall of the cylindrical wall body of the utility pole protection plate that is used on the front side and has a relatively large inner diameter, and the utility pole protection that is used on the end side and has a relatively small inner diameter. The utility pole protective plate (501, 502, 503) is characterized in that the outer projection (58) provided on the outer wall of the cylindrical wall body of the plate engages with each other and is separated from the axial direction. . The inner protrusion is provided between the support members adjacent in the circumferential direction, and the outer protrusion of the upper utility pole protective plate corresponding to the inner protrusion protrudes on both sides in the circumferential direction of the inner protrusion. The utility pole protection plate according to claim 3 , wherein relative rotation is regulated by the supporting rib (53).

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