Protection device, power distribution equipment, and method for removing the protection device

Abstract

An object of the present invention is to provide a protection device that is easy to install and handle and can protect power distribution facilities to prevent cable theft in advance. 【Means for solving the problem】 The invention of the present application for solving the above problems is a protection device X including a covering portion 1 that covers the power distribution facility Y installed on the pillar Y1 and is arranged to cover the power distribution facility Y including the pillar Y1, and a fixing portion 2 that fixes the covering portion 1 so as not to be separated from the installation surface by a predetermined distance or more. The covering portion 1 is fixed so as to cover the power distribution facility Y and not to be separated from the ground.

Description

Technical Field

[0001] The present invention relates to a device for protecting cables from theft, particularly for use in solar power generation facilities.

Background Art

[0002] In solar power generation facilities, copper cables with high electrical conductivity are widely used to connect solar panels and control equipment. Copper has excellent electrical conductivity and is an essential element for the efficient operation of solar power generation. However, with the increase in copper prices, theft damage targeting this has been increasing. Patent Document 1 describes a device that prevents theft by detecting current.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the device described in Patent Document 1, a person is required to respond to theft detection, so the maintenance cost is high, and repair costs occur because the equipment is damaged even when detected. Therefore, it is preferable to prevent theft from occurring in the first place. By the way, when a thief steals cables in a solar power generation facility, first, a predetermined operation is performed on the power distribution equipment to prevent electric shock during work. The inventor considered that theft of the cables could be prevented by physically strengthening the protection of this part.

[0005] In view of the above problems, an object of the present invention is to provide a protection device that is easy to install and handle and can protect power distribution equipment to prevent cable theft in advance.

Means for Solving the Problems

[0006] The present invention for solving the above problems is a protection device that covers power distribution equipment installed on a pillar, comprising a covering part arranged to cover the pillar and the power distribution equipment, and a fixing part for fixing the covering part so as not to be separated from the installation surface by more than a predetermined distance. With such a configuration, it is possible to protect the power distribution equipment by covering it, give a sense of intimidation to thieves, and prevent cable theft by hindering their work. In addition, the power distribution equipment covered by this protection device has a higher anti-theft performance compared to the power distribution equipment not covered by the protection device. Note that this protection device can be cut by a cutting process for cutting the covering part.

Effects of the Invention

[0007] The present invention for solving the above problems can provide a protection device that is easy to install and handle and can protect power distribution equipment to prevent cable theft in advance.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Best Mode for Carrying Out the Invention

[0009] Hereinafter, with reference to the drawings, a protection device X for a power distribution facility Y according to each embodiment of the present invention will be described. The description will be detailed in the order of the configuration of the embodiment, the method of implementation, and examples of changes. Note that the embodiments shown below are examples of the present invention, and the present invention is not limited to the following embodiments. Also, the "approximate" in the application documents means that chamfering or rounding is performed on the subsequent shape, and that the elements constituting the shape are deformed or the length is changed within a range that does not impede the purpose and effect of the configuration. Further, in the application documents, the direction in which the pillar Y1 extends or the direction of the axis of the covering portion 1 is defined as the upward direction, and the direction perpendicular to this is defined as the lateral direction.

[0010] 《First Embodiment》 As shown in FIGS. 1 to 3, the present invention is a protection device X including a covering portion 1 that covers the power distribution facility Y installed on the pillar Y1 and is arranged to cover the power distribution facility Y including the pillar Y1, and a fixing portion 2 that fixes the covering portion 1 so as not to be separated from the installation surface by a predetermined distance or more. By covering the power distribution facility Y with the covering portion 1 and fixing it so as not to be separated from the installation surface, it is possible to prevent theft by preventing the inside of the power distribution facility Y from being touched.

[0011] The power distribution facility Y includes a pillar Y1, a switchboard Y2 fixed at a position away from the ground on the pillar Y1, and a meter Y3 fixed to the pillar Y1 above the switchboard Y2. The power distribution facility Y also includes at least an electric wire Y4 connected to the switchboard Y2. In addition to this, various facilities for controlling a solar power generation facility, such as a current transformer and a transformer, may be attached to the pillar Y1.

[0012] The pillar Y1 is a pillar made of metal, concrete, or wood and having a length of at least 2 m or more. The lower part of the pillar Y1 penetrates the ground and stands upright, and the electric wire Y4 is arranged along the axis of the pillar Y1.

[0013] The distribution board Y2 is a device that distributes the power obtained from the solar power generation facility through the electric wire Y4 and transmits it to the outside. It also protects the circuit. In the embodiment, it is stored in a waterproof box and can be operated from the outside through the distribution hole 12A described later.

[0014] The meter Y3 is a part that measures and displays the amount of transmitted power and is connected to the distribution board Y2. The meter Y3 is exposed to the outside through the meter hole 13A described later, and by checking this, the amount of power sold by the solar power generation facility can be known.

[0015] The electric wire Y4 is a conductor wire covered with a protective coating that is an insulator. Copper is assumed as the conductor wire. The electric wire Y4 may be provided by bundling a plurality of wires with protective coatings.

[0016] The protection device X includes a substantially cylindrical covering portion 1 that abuts on the installation surface and covers the distribution facility Y together with the pillar Y1, and a fixing portion 2 that connects the covering portion 1 and the pillar Y1 and fixes the pillar Y1 so as not to leave the installation surface.

[0017] The covering portion 1 has a plate-shaped covering body 10 that actually surrounds the distribution facility Y and is stacked in a plurality, a connecting portion 11 that connects the end sides of the covering body 10 to make the covering portion 1 cylindrical, and a door portion 12 that makes a part of the covering body 10 openable and exposes a part of the distribution facility Y to enable work.

[0018] The fixing portion 2 is a component that fixes the installation covering portion 101 so as not to be separated by a predetermined distance or more from the installation surface, connects to the inner peripheral surface of the covering body 10, and has a covering fixing portion 21 that is fixed inside the covering body 10 and a pillar fixing portion 22 that connects the covering fixing portion 21 and the pillar Y1. The fixing portion 2 is provided at the lower part of the distribution board Y2 at a position visible from the distribution hole 12A. Preferably, the distribution board Y2 and the fixing portion 2 are close to each other to enhance the fixing performance.

[0019] The covering body 10 includes an installation covering part 101 provided on the installation surface, an upper-stage covering part 102 provided on the installation covering part 101, and a topmost-stage covering part 103 provided on the upper-stage covering part 102. In this way, by combining a plurality of covering bodies 10, the installation work is facilitated and the transportation volume is reduced. Also, the height of the entire covering part 1 is set to at least 1.8 m or more so that people cannot visually recognize the inside from above, enhancing the sense of intimidation. In the embodiment, the covering body 10 has three stages, but it may have four or more stages. When using a covering body 10 with a high height per unit, it may have two stages. Specifically, by arranging a covering body 10 having the same structure as the upper-stage covering part 102 between the upper-stage covering part 102 and the topmost-stage covering part 103, the number of stages may be further increased.

[0020] The materials constituting the covering body 10 are all metal plates provided in a cylindrical shape by the connecting part 11. It is preferable to use a metal with high durability and corrosion resistance such as stainless steel or titanium for the metal plate. In the embodiment, Super Dyma (registered trademark) is used. Also, the thickness of the metal plate is at least 0.3 mm or more, more preferably 0.5 mm or more, and in the embodiment, it is 0.8 mm. In this way, by increasing the thickness of the metal plate, the robustness is enhanced, and by increasing the weight of the covering body 10, the removal work from the lower stage is made difficult.

[0021] The installation covering part 101 is a cylindrical part whose lower end is located on the installation surface. In the embodiment, the installation surface is the ground, and the lower end surface of the installation covering part 101 abuts against the ground. Here, it is preferable to improve the drainage of the ground water so that water does not accumulate inside the covering part 1.

[0022] In the embodiment, the installation covering part 101 abuts against the ground, but this lower end surface may be partially separated from the ground by, for example, a notch to such an extent that a person's arm cannot enter (about 2 to 5 cm), and the water that has entered the inside of the covering part 1 from here may be drained. Further, the installation surface may be the ground, and a part of the lower part of the installation covering portion 101 may be provided so as to sink into the ground. According to this, the protection device X can be made more robust.

[0023] The covering main body 10 ensures deformation performance and strength and improves handling performance by making the outer diameter 1 / 3 times or more of its height. In the embodiment, the outer diameter of the installation covering portion 101 is 650 mm, and the axial height is 1300 mm.

[0024] The upper covering portion 102 has substantially the same cylindrical shape as the installation covering portion 101, has substantially the same outer diameter as the installation covering portion 101, and is provided so that the axial length is slightly shorter than that of the installation covering portion 101. Further, the uppermost covering portion 103 has substantially the same cylindrical shape as the installation covering portion 101, has substantially the same outer diameter as the installation covering portion 101, and is provided so that the axial length is slightly shorter than that of the upper covering portion 102. That is, compared with the lower covering main body 10, the upper covering main body 10 reduces the height, increases the ratio of the overlapping portion 10A in the height direction described later, improves the stability, and improves the workability at a high place, making it easier to install. Further, since the maximum diameters of the covering main bodies 10 are all substantially equal, the expandability is improved, and the covering portion 1 becomes a cylinder with a constant diameter as a whole.

[0025] In the state where the covering portion 1 is formed, the outer diameter of the upper end of the installation covering portion 101 is smaller than the inner diameter of the lower end of the upper covering portion 102. As a result, as shown in FIG. 4, the upper part is fitted with the upper covering portion 102, and the upper overlapping portion 10A is covered by the upper covering portion 102. At this time, the outer diameter of the overlapping portion 10A of the installation covering portion 101 is smaller than the outer diameter of the lower part thereof, forming a step.

[0026] In the state where the upper covering part 102 forms the covering part 1, the outer diameter of the upper end is smaller than the inner diameter of the lower end of the upper covering part 102, and the inner diameter of the lower end is larger than the outer diameter of the upper end of the installation covering part 101. Thereby, in the same manner as the installation covering part 101, it fits with the uppermost covering part 103, and the upper overlapping part 10A is covered by the uppermost covering part 103. Also, the lower part fits with the installation covering part 101, and the lower overlapping part 10A covers a part of the installation covering part 101. In the upper covering part 102, the outer diameter of the upper overlapping part 10A is smaller than the outer diameter of the part below it, forming a step.

[0027] In the state where the uppermost covering part 103 forms the covering part 1, the inner diameter of the lower end is larger than the outer diameter of the installation covering part 101, and it fits and connects with the upper covering part 102. In the embodiment, the upper end of the uppermost covering part 103 is open, but by providing a lid that does not interfere with the power distribution facility Y, the interior can be sealed to make it difficult for rainwater, etc. to enter.

[0028] As shown in FIG. 4, the overlapping part 10A is a part where the upper part of one covering body 10 and the lower part of another covering body 10 overlap. By a fixing member R such as a rivet passing through this part, the covering body 10 in the upper stage is relatively fixed to another covering body 10 in the lower stage in the vertical direction and the rotational direction. Thereby, it becomes more difficult to remove. FIG. 4 is a schematic cross-sectional view around the overlapping part 10A of the installation covering part 101, and descriptions such as the door part 12 are omitted.

[0029] The convex portion 10B restricts the positional relationship of the connected cover body 10 in the vertical direction. That is, the convex portion 10B is a portion shaped like Ω in cross-section that protrudes radially from the outer peripheral surface of the cover body 10, and by interfering with the lower end of the cover body 10 installed on the upper part, it restricts the downward movement of the upper cover body 10. In the embodiment, the convex portion 10B is provided above at least half of the cover body 10, preferably above 1 / 4, thereby ensuring the height of the cover portion 1. In the embodiment, the convex portion 10B is provided by deforming a plate material, and the inner peripheral surface is recessed, but a flange-like component may be attached to surround the outer periphery of the cover body 10. Further, in the embodiment, the outer diameter of the overlapping portion 10A above the convex portion 10B is smaller than the inner diameter of the lower side, so that the cover body 10 is stepped at the convex portion 10B.

[0030] As shown in FIGS. 4 and 5, the connecting portion 11 is a portion that forms a cylindrical shape by connecting the cover body 10 provided in a plate shape in the vertical direction. The connecting portion 11 includes a protrusion 111 provided on a surface close to one end side of the cover body 10, an inner fold 112 that is folded back inside at the side of the other end of the cover body 10 to reinforce the end portion, and an outer fold 113 that extends from the inner fold 112 and engages with the protrusion 111 at the end portion. FIG. 5 is an enlarged cross-sectional view of the connecting portion 11 in the radial direction.

[0031] The protruding portion 111 is a portion that protrudes toward the inner peripheral surface of the covering body 10, and connects one side and the other side of the covering body 10 by engaging with the end of the inner fold 112. The protruding portion 111 is provided continuously with a part of the covering body 10, and a slanting portion that is inclined with respect to the tangential direction of the covering body 10 and a vertical portion that is substantially perpendicular to the tangential direction are continuous, and it bulges so as to be substantially a right triangle in plan view. Here, the inclined surface is arranged to face one end side, and the vertical portion abuts against and is supported by the outer folded portion 114. In the embodiment, a plurality of the protruding portions 111 are provided at equal intervals on a line parallel to the vertical direction, and the ends are connected at a plurality of points. Further, the protruding portion 111 is provided also in the portion below the convex portion 10B and in the upper overlapping portion 10A, thereby improving the robustness. Further, the protruding portion 111 is provided so as to be longer in the vertical direction than in the tangential direction, and the length of contact with the inner fold 112 is increased.

[0032] The inner fold 112 and the outer fold 113 are folds that are continuously provided over the entire vertical direction on the other end side of the covering body 10. By inserting one end side of the covering body 10 therebetween, it can be easily connected but is made difficult to come off. Also, it is possible to narrow the diameter according to the insertion depth, facilitating the connection of the covering bodies 10. Note that the relationship between the shapes of the inner fold 112 and the outer fold 113 may be reversed, but it is more preferable to be as in the embodiment because it becomes difficult to remove from the outside.

[0033] The inner fold 112 is a reverse J-shaped portion provided inside the covering body 10 in a plan view, and its end abuts against the vertical portion. The starting point of the inner fold 112 is provided by being folded at a position close to the starting point of the outer fold 113 where it is continuous with the outer fold 113. The inner fold 112 extends from this starting point toward the protrusion 111 with a space from the inner peripheral surface of the covering body 10 so as to be substantially parallel to the tangent of the covering body 10, and is folded at a position away from one end than the protrusion 111. Also, the distance from the end of the inner fold 112 to its starting point is provided to be longer than at least the distance from one end to the protrusion 111, so that one end side of the covering body 10 can be inserted and the protrusion 111 can be engaged. Preferably, the inner fold 112 is bent with a kink toward the inside of the covering body 10 to facilitate the catching of the protrusion 111.

[0034] The outer fold 113 is a U-shaped portion provided outside the protrusion 111 in a plan view, and its folding point is located at a position at least away from one end than the protrusion 111 to enhance the holding performance by the outer fold 113. The outer fold 113 is located outside the protrusion 111 by curving radially outward at its starting point.

[0035] Here, the covering part 1 has a plurality of holes provided corresponding to the mounting position of the power distribution equipment Y in order to operate the internal power distribution equipment Y. In the embodiment, it has a power distribution hole 12A which is a hole for operating the switchboard Y2 in the installation covering part 101 and a meter hole 13A which is a hole for operating the meter Y3 in the upper covering part 102. These holes have a size such that the entire corresponding power distribution equipment Y can be visually recognized when each power distribution equipment Y is viewed in a plan view. Also, these holes are provided at a distance of a predetermined distance (for example, 50 mm) or more from the installation surface and the convex part 10B to ensure robustness.

[0036] The door part 12 is a plate material for opening and closing the power distribution hole 12A, and the sub-door part 13 is a plate material for opening and closing the meter hole 13A. These main bodies (door main body 120, sub-door main body 130) are made of the same material as the covering part 1, have a shape corresponding to the outer peripheral surface of the covering part 1, and are provided to be at least wider than the width of the hole to be closed.

[0037] The door part 12 includes a door main body 120, a door hinge 121 that rotatably supports the door main body 120 with respect to the covering part 1, a door protrusion 122 that protrudes from a portion covered by the door part 12 on the covering part 1 in a closed state, and a door hole 123 provided in the door main body 120 and into which the door protrusion 122 penetrates.

[0038] The door main body 120 is provided so as to block the entire power distribution hole 12A to prevent malicious access to the switchboard Y2. The door hinge 121 is a hinge that rotatably connects the edge of the power distribution hole 12A and the edge of the door main body 120 about the vertical direction as an axis. The door hinge 121 is attached to each member by spot welding to prevent malicious removal.

[0039] As shown in FIG. 6, the door protrusion 122 is inserted into the door hole 123 in a state where the door part 12 is closed, and a lock Z is provided on the door protrusion 122 to prevent the door main body 120 from being inadvertently opened. In the embodiment, the door protrusion 122 is a flat plate member attached in parallel in the vertical direction and has a hole for attaching the lock Z at a position away from the attachment starting point. Also, the door hole 123 is a hole having a shape corresponding to the door protrusion 122. In the embodiment, the door protrusion 122 protrudes from the edge of the side opposite to the side where the door hinge 121 is provided and protrudes from a substantially central position of the edge of the door main body 120. Note that FIG. 6(a) is a cross-sectional view of the hole side surface of the door protrusion 122 in a state where the door part 12 is closed, and FIG. 6(b) is a cross-sectional view of the periphery of the door protrusion 122.

[0040] The sub-door part 13 includes a sub-door main body 130, a sub-door hinge 131, a sub-door protrusion 132, and a sub-door hole 133. Among these, since the sub-door hinge 131, the sub-door protrusion 132, and the sub-door hole 133 are substantially the same as the configuration of the corresponding parts of the door part 12, the description thereof is omitted.

[0041] The sub-door body 130 is provided at the meter hole 13A so as to cover a range below the display portion of the meter Y3. It makes the display of the meter Y3 easier to view, while hiding the wiring and making it difficult to perform electric shock prevention processing. Also, by providing the sub-door body 130 so that it can be opened and closed, it facilitates the replacement work of the meter.

[0042] The cover fixing portion 21 is a fixture for fixing the inner circumference of the cover body 10 in a laid state. In the embodiment, the cover fixing portion 21 includes a laying portion 211 that is an angle for laying the cover body 10, and circumferential surface fixing portions 212 that connect both ends of the laying portion 211 to the inner circumferential surface of the cover body 10 at both ends of the laying portion 211. The circumferential surface fixing portion 212 is a bent metal fitting, one surface of which is connected to the laying portion 211 and the other surface of which is connected to the inner circumferential surface of the cover body 10. The connection between this and the cover body 10 is achieved by a fixing member R without a screw hole passing through the cover body 10, thereby increasing the strength and making it difficult to remove it maliciously.

[0043] The pillar fixing portion 22 is a fitting for fixing the laying portion 211 and the pillar Y1. In the embodiment, it is a U-shaped bolt whose end is penetrated and fixed to the laying portion 211 and whose circumferential surface is provided so as to surround the pillar Y1. This prevents the protection device X from moving or tilting with respect to the pillar Y1, and when trying to lift and remove the protection device X, the pillar fixing portion 22 interferes with the distribution board Y2 etc., so that it does not move more than a predetermined distance from the installation surface.

[0044] Hereinafter, with reference to FIGS. 1 to 7, the mounting and removal methods of the present invention will be described in detail. The present invention is implemented by a constructor who mounts and removes the protection device X on the power distribution facility Y. Also, the method shown below is an example, and the method is not limited to this, and the order may be reversed.

[0045] First, as an installation process, the constructor bends the plate-shaped installation cover portion 101 so as to surround the pillar Y1, and connects one end side and the other end side via the connecting portion 11 to form a cylindrical shape. Next, the constructor installs the lower end of this installation cover portion 101 on the installation surface.

[0046] Next, as the fixing part installation process, the constructor installs the fixing part 2 through the power distribution hole 12A. Specifically, the constructor makes the erection part 211 abut against the column Y1, and in that state, installs and fixes the circumferential surface fixing part 212 to the installation covering part 101 to install the fixing part 2.

[0047] Next, as the expansion process, the constructor provides the upper covering part 102. That is, the constructor bends the plate-shaped upper covering part 102 around the column Y1 at the upper part of the installation covering part 101 and connects it through the connection part 11 to form a cylindrical shape. Then, the user inserts the lower end of the upper covering part 102 into the upper end of the installation covering part 101 to increase the height of the covering part 1. Subsequently, the constructor performs the same operation on the plate-shaped uppermost covering part 103, inserts the lower end of the uppermost covering part 103 into the upper end of the upper covering part 102, and further increases the height of the covering part 1. Here, the connection part 11 is designed to be unable to come off without expanding the diameter. In the overlapping part 10A, the outer circumference of the lower covering main body 10 is covered by the upper covering main body 10. Therefore, it is difficult to remove the covering part 1 unless it is from the uppermost covering main body 10.

[0048] Finally, as the door installation process, the constructor attaches the door part 12 and the sub-door part 13 to predetermined positions, and attaches the lock Z in the closed state to complete the protection device X. At this time, the sub-door part 13 is installed so that the meter Y3 can be visually recognized, thereby enhancing the use performance.

[0049] When the implementer wants to remove it, it can be removed by performing reverse operations for the expansion process, the fixing part attachment process, and the installation process. On the other hand, when it is difficult to remove due to rusting of the connection part 11 or the like, as the cutting process, the covering part 1 is cut with a grinder or the like. When cutting, it is preferably first to cut the part where the covering main body 10 and the door part 12 are connected to expose the switchboard Y2, and perform predetermined processing to prevent the risk of electric shock.

[0050] 《Second Embodiment》 The following will describe in detail the protection device X according to the second embodiment of the present invention with reference to FIG. 8. For the same configurations as those in the first embodiment, the description will be omitted by using the same reference numerals. The protection device X according to the embodiment includes a covering portion 1 that covers the power distribution facility Y and is arranged to cover the power distribution facility Y including the pillar Y1, and a fixing portion 2 that fixes the covering portion 1 so as not to be separated from the installation surface by more than a predetermined distance.

[0051] The covering portion 1 includes a covering main body 10 provided in a stacked manner, a connecting portion 11, a door portion 12, and a sub-door portion 13. Here, the covering main body 10 is provided in a prismatic shape having an arbitrary polygonal cross-section, and in the embodiment, the cross-section is provided in a square shape. The door portion 12 is provided on one of the side surfaces of the covering main body 10, and the sub-door portion 13 is provided on the surface opposite to the door portion 12. Thereby, the shape of the door can be simplified.

[0052] The covering main body 10 is provided so as to be dividable into two substantially U-shaped members of the same shape. The side edges parallel to the vertical direction are provided with a protrusion 111 in the vicinity of one side, and an inner fold 112 and an outer fold 113 are formed on the other side, so that the protrusion 111 is inserted between the folds and connected at each of the side edges of the U-shaped member. Thereby, the installation process can be easily performed without bending the plate. Note that the number of divisions is not limited to two, and may be three or more. In this way, by providing one connecting portion 11 on each of the opposing surfaces, even if the upper covering portion 102 is made higher, the installation can be facilitated.

[0053] Note that the shape of the covering main body 10 does not necessarily need to be provided with the convex portion 10B as in the embodiment, and it is sufficient if the lower portion can be fitted to cover the upper portion. That is, the covering main body 10 may have a frustum of a cone shape as a whole by making the diameter decrease from the lower end to the upper end. In this case, it is preferable to incline the line on which the protrusions 111 are provided at equal intervals with respect to the vertical direction.

[0054] The form of the fixing part 2 is not limited to the embodiments. For example, it may be fixed by winding a band around the column Y1, or the column Y1 may be clamped using two or more installation parts 211.

[0055] In addition, the covering part 1 has a covering main body 10 made of a plate material. The covering main body 10 has a connecting part 11 that connects the side ends of the plate material in the vertical direction, facilitating transportation and assembly.

[0056] Furthermore, the covering main body 10 is a metal plate that can be bent and deformed. The connecting part 11 connects one side of the covering main body 10 and the side opposite to this side, making the covering part 1 cylindrical, which further facilitates assembly.

[0057] Moreover, the covering part 1 has an installation covering part 101 arranged on the installation surface and an upper covering part 102 arranged on the upper covering part 101. The upper covering part 102 is provided so as to surround a part of the outer peripheral surface of the installation covering part 101, facilitating installation with increased height and enabling easy removal.

[0058] Also, the covering part 1 has an openable and closable door part 12 at the height where the power distribution equipment Y is provided, improving workability such as inspection work while protecting the power distribution equipment Y.

[0059] In addition, the fixing part 2 prevents the column Y1 and the covering part 1 from being removed by fixing them inside the covering part 1. Also, by providing the fixing part 2 at a height close to the door part 12, the workability during installation is improved.

[0060] The power distribution equipment Y including the column Y1 is surrounded by a protection device X. The protection device X includes a covering part 1 arranged to cover the column Y1 and the power distribution equipment Y, and a fixing part 2 that fixes the covering part 1 so that it does not deviate from the installation surface by more than a predetermined amount, strengthening the protection of the power distribution equipment Y.

[0061] A method for removing the protection device X, including a cutting step of cutting the covering portion 1, enables easy removal even if the covering main bodies 10 cannot be separated from each other. In the cutting step, it is particularly preferable to cut the door hinge 121 and the door protrusion 122.

Explanation of reference numerals

[0062] X Protection device 1 Covering portion 10 Covering main body 101 Installed covering portion 102 Upper covering portion 103 Upper-upper covering portion 10A Overlapping portion 10B Convex portion 11 Connecting portion 111 Protrusion portion 112 Inner fold 113 Outer fold 12 Door portion 12A Power distribution hole 120 Door main body 121 Door hinge 122 Door protrusion 123 Door hole 13 Sub-door portion 13A Meter hole 130 Sub-door main body 131 Sub-door hinge 132 Sub-door protrusion 133 Sub-door hole 2 Fixing portion 21 Covering fixing portion 211 Erection portion 212 Peripheral surface fixing portion 22 Column fixing portion Y Power distribution equipment Y1 Column Y2 Switchboard Y3 Meter Y4 Electric wire R Fixing member Z Padlock

Claims

1. A protection device that covers power distribution equipment installed on a pole, comprising: a covering part that surrounds the pole and the power distribution equipment; a fixing part that fixes the covering part so that it does not move more than a predetermined distance from the installation surface. The covering part includes a covering main body made of a plate material, an installation covering part disposed on the installation surface, and an upper-stage covering part disposed on the upper side of the installation covering part. The covering main body has a connecting part that connects the side ends of the plate material. The upper-stage covering part is a protection device provided so as to surround a part of the outer peripheral surface of the installation covering part.

2. The covering main body is a metal plate that can be bent and deformed. The connecting part connects one side of the covering main body and the side opposite to the one side, and the protection device according to claim 1, wherein the covering part is formed into a cylindrical shape.

3. The protection device according to claim 1, wherein the covering part has an openable and closable door part at the height where the power distribution equipment is provided.

4. The protection device according to claim 1, wherein the fixing part fixes the pole and the covering part inside the covering part.

5. Power distribution equipment installed on a pole, comprising: a protection device having a covering part that surrounds the periphery including the pole; and a fixing part that fixes the covering part so that it does not move more than a predetermined distance from the installation surface. The covering part includes a covering main body made of a plate material, an installation covering part disposed on the installation surface, and an upper-stage covering part disposed on the upper side of the installation covering part. The covering main body has a connecting part that connects the side ends of the plate material. The upper-stage covering part is power distribution equipment provided so as to surround a part of the outer peripheral surface of the installation covering part.

6. A protection device that covers power distribution equipment installed on a pole, comprising: a covering part that surrounds the pole and the power distribution equipment; a fixing part that fixes the covering part so that it does not move more than a predetermined distance from the installation surface. The covering part has an openable and closable door part at the height where the power distribution equipment is provided. The covering part includes a covering main body made of a plate material, an installation covering part disposed on the installation surface, and an upper-stage covering part disposed on the upper side of the installation covering part. The covering main body has a connecting part that connects the side ends of the plate material. A method for removing a protection device, wherein the covering part includes an upper-stage covering part provided so as to surround a part of the outer peripheral surface of the installation covering part. The method for removing the protection device includes a cutting step of cutting the covering part. A method for removing a protection device, including a cutting step of cutting the covering part.

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