Underground distribution inspection-type underground distribution line support device with improved safety

The mechanism addresses the challenges of detecting leakage and installing underground distribution lines by incorporating a support mechanism with integrated sensors and indicators, ensuring safe and efficient power distribution inspection and installation.

WO2026038621A1PCT designated stage Publication Date: 2026-02-19KANG DAE JUN
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Patent Information

Application Number
PCT/KR2024/020054
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-08-14
Filing Date
2024-12-09
Publication Date
2026-02-19

AI Technical Summary

Technical Problem

Existing underground distribution systems face challenges in safely inspecting the status of power distribution due to difficulty in detecting leakage and cumbersome installation of underground distribution lines.

Method used

A mechanism comprising a support mechanism, wire installation mechanism, hanging mechanism, leakage detection sensor, and leakage indication mechanism, which includes a striking device to visually indicate leakage and facilitate easy installation of underground distribution lines.

Benefits of technology

Enables safe inspection of underground power distribution status through leakage indication and convenient installation of underground distribution lines.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to an underground distribution inspection-type underground distribution line support device with improved safety, the underground distribution line support device comprising: a support device (10); an electric wire installation device (20); a hanging device (30); a leakage detection sensor (40); a leakage display device (50); and a striking device (60). Accordingly, the safety of underground distribution lines can be inspected via electric leakage display, and underground distribution lines can be conveniently installed.
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Description

Safety-enhancing underground distribution line support mechanism capable of checking the underground distribution status

[0001] The present invention relates to a safety-enhanced underground distribution line support mechanism capable of checking the underground distribution status.

[0002] Typically, electricity produced at power plants is distributed to each consumer through overhead distribution lines.

[0003] Meanwhile, recently, underground power distribution methods using power lines are being used more often than overhead power distribution methods for the sake of urban appearance and safety.

[0004] At this time, as shown in Fig. 1, a number of trays (supports, 2) are installed inside the power structure (1) and the underground distribution line (3) is installed.

[0005] However, in the past, when a leakage occurred in the tray (2), it was not easy for the manager to know, so there was a limit to accurately checking whether the underground power distribution status was being performed safely.

[0006] In addition, since it was not easy to place the underground distribution line (3) on the tray (2) in the past, the installation work was not easy when installing the underground distribution line (3) on the tray (2) and required a lot of labor.

[0007] The present invention was invented to solve the above-mentioned problem, and the problem to be solved is to provide an underground distribution line support mechanism that enables safe inspection of the underground distribution status through a leakage current indication and convenient installation of underground distribution lines.

[0008] The present invention, in order to solve the above problems,

[0009] It is now possible to display leakage current.

[0010] A front plate (11) having a front plate fixing hole (11a) opened to the left; a rear plate (12) located at the rear of the front plate (11) and having a rear plate fixing hole (12a) opened to the left; an upper plate (13) provided on the upper portions of the front plate (11) and the rear plate (12) to connect the front plate (11) and the rear plate (12); a lower plate (14) having an opening hole (14a) opened to the left and downward and provided on the left portion of the lower plate (14) to connect the lower portion of the front plate (11) and the lower portion of the rear plate (12); A support mechanism (10) having a support shaft (15) in which the front end penetrates the front plate (11) and protrudes forward of the front plate (11) and the rear end is installed on the front of the rear plate (12); and is installed on the inner wall of a power hole (W), and in which a receiving space (a) is formed by the connection of the front plate (11), the upper plate (13), the rear plate (12), and the lower plate (14);

[0011] A wire arrangement body (21) having an insertion movable part (21a) that is inserted into the left side of the support mechanism (10) so as to be movable left and right, a lower part (21b1) provided on the left side of the insertion movable part (21a), an upper part (21b2) provided above the lower part (21b1), a connecting part (21b3) connecting the left side of the lower part (21b1) and the left side of the upper part (21b2), and a guide part (21c) that is arranged to be inclined upwardly on the right side of the upper part (21b2) of the wire arrangement part (21b); A hook shaft (22) provided at the front and rear of the insertion moving part (21b), respectively, and inserted and removed into the front plate fixing hole (11a) of the front plate (11) and the rear plate fixing hole (12a) of the rear plate (12); a first roller (23) installed on the upper part of the lower part (21b1) of the wire arrangement part (21b) so as to be rotatable clockwise or counterclockwise with respect to the Y-axis; a second roller (24) installed on the upper part of the lower part (21b1) of the wire arrangement part (21b) so as to be rotatable clockwise or counterclockwise with respect to the X-axis, located on the left side of the first roller (23); a third roller (25) installed on the lower part of the upper part (21b2) of the wire arrangement part (21b) so as to be rotatable clockwise or counterclockwise with respect to the X-axis; A fourth roller (26) is installed on the right side of the connecting member (21b3) of the wire arrangement section (21b) to be rotatable clockwise or counterclockwise based on the Z-axis; and a wire installation mechanism (20) that is inserted into the support mechanism (10) or is provided to be rotatable clockwise or counterclockwise based on the support axis (15) of the support mechanism (10);

[0012] A hooking mechanism (30) having a connecting portion (31) that is installed to be rotatable clockwise or counterclockwise at the front end of a support shaft (15) and is located in front of a front plate (11) of a support mechanism (10), an extension portion (32) that is provided to extend to the left of the connecting portion (31), and a hooking portion (33) that is provided on the left side of the extension portion (32) and is detachably hooked to a hooking shaft (22);

[0013] A leakage detection sensor (40) installed in a wire installation device (20) and outputting a leakage detection signal when a leakage is detected;

[0014] A 'ㄷ' shaped fastening mechanism (51) that is detachably installed in a guide portion (21c); a fluorescent substance receiving mechanism (52) having an emission hole (52a) through which fluorescent substance is emitted and in which fluorescent substance is received inside the fluorescent substance receiving mechanism (52); a leakage current indicating mechanism (50) having a closing film (53) that closes the emission hole (52a) and is broken by the impact of a striking needle (62);

[0015] A striking device (60) having a striking needle drive mechanism (61) that is installed in a guide portion (21c) so as to be arranged adjacent to a closing film (53) and is driven when a leakage detection signal is received from a leakage detection sensor (40); a striking needle (62) that is installed so as to be movable laterally on the striking needle drive mechanism (61) and strikes the closing film (53) when the striking needle drive mechanism (61) is driven;

[0016] It is characterized by including.

[0017] The present invention, which is a means for solving the above-mentioned problem, includes a support mechanism (10), a wire installation mechanism (20), a hanging mechanism (30), a leakage detection sensor (40), a leakage indication mechanism (50), and a striking device (60), and has the effect of enabling a safe inspection of the underground power distribution status through a leakage indication and conveniently installing an underground power distribution line.

[0018] Figure 1 is a drawing for explaining the prior art,

[0019] Figure 2 is a general diagram for explaining the present invention,

[0020] Figure 3 is a partial drawing showing a part of Figure 2,

[0021] Figure 4 is a partial cross-sectional view corresponding to Figure 3,

[0022] Figure 5 is a drawing showing a part of Figure 4,

[0023] Figure 6 is a partially exploded perspective view for explaining the present invention.

[0024] Figures 7 and 8 are operational diagrams for explaining the operation of the present invention.

[0025]

[0026] - Explanation of symbols -

[0027] 10: Support mechanism 20: Wire installation mechanism

[0028] 30: Hanging mechanism 40: Leakage detection sensor

[0029] 50: Leakage indicator device 60: Striking device

[0030] W: Power line L: Underground distribution line

[0031] The following describes the present invention so that a person skilled in the art can easily practice it.

[0032]

[0033] FIG. 2 is a general view for explaining the present invention, FIG. 3 is a partial drawing showing a part of FIG. 2, FIG. 4 is a partial cross-sectional view corresponding to FIG. 3, FIG. 5 is a drawing showing a part of FIG. 4, and FIG. 6 is a partial exploded perspective view for explaining the present invention. The configuration of the present invention will be described with reference to FIGS. 2 to 6 as follows. Meanwhile, in the present embodiment, the X-axis direction on FIG. 6 is left-right (left-right direction), the Y-axis direction on FIG. 6 is front-rear (front-and-rear direction), and the Z-axis direction on FIG. 6 is up-and-down (up-and-down direction) to explain the directionality of the configuration of the present embodiment. In addition, the direction of each configuration in the present embodiment is one example, and the direction of each configuration may be interpreted differently depending on how the standard is set.

[0034] The underground distribution line support mechanism capable of checking the underground distribution status according to the present invention is capable of indicating a current leakage, and includes a support mechanism (10), a wire installation mechanism (20), a hanging mechanism (30), a current leakage detection sensor (40), a current leakage indicating mechanism (50), and a striking device (60).

[0035] The above support mechanism (10) has a front plate (11), a rear plate (12), an upper plate (13), a lower plate (14), and a support shaft (15), as shown in FIGS. 2 to 4 and FIG. 6.

[0036] The above front plate (11) has a front plate fixing hole (11a) opened to the left. In this embodiment, the front plate (11) has a square plate shape.

[0037] The above rear plate (12) is provided with a rear plate fixing hole (12a) opened to the left and is located at the rear of the front plate (11). In this embodiment, the rear plate (12) has a square plate shape and is provided to face the rear plate (12).

[0038] The above upper plate (13) is provided on the upper portion of the front plate (11) and the rear plate (12) and connects the front plate (11) and the rear plate (12). In this embodiment, the upper plate (13) has a square plate shape.

[0039] The lower plate (14) is provided with an opening hole (14a) that is opened to the left and downwards on the left side of the lower plate (14), and connects the lower part of the front plate (11) and the lower part of the rear plate (12). In the present embodiment, the lower plate (14) has a square plate shape and is provided to face the upper plate (14).

[0040] The above-mentioned support shaft (15) has a front end that penetrates the front plate (11) and protrudes forward of the front plate (11), and a rear end that is installed on the front surface of the rear plate (12). In this embodiment, the support shaft (15) has a circular shaft shape. Meanwhile, in this embodiment, the support shaft (15) may have a rear end that penetrates the rear plate (12) and protrudes backward of the rear plate (12).

[0041] This support mechanism (10) is installed on the inner wall of the power hole (W), and a receiving space (a) is formed by connecting the front plate (11), the upper plate (13), the rear plate (12), and the lower plate (14). That is, in the present embodiment, the support mechanism (10) is formed in a square tube shape by sequentially connecting the front plate (11), the upper plate (13), the rear plate (12), and the lower plate (14).

[0042] The above wire installation device (20) has a wire arrangement body (21), a catch shaft (22), a first roller (23), a second roller (24), a third roller (25), and a fourth roller (26), as shown in FIGS. 2 to 6.

[0043] The above wire arrangement body (21) has an insertion portion (21a), a wire arrangement portion (21b), and a guide portion (21c).

[0044] The above insertion moving part (21a) is provided with a guide hole (21a1) that is inserted into the support shaft (15) so as to be movable left and right, and is inserted into the left part of the support mechanism (10) so as to be movable left and right. In the present embodiment, the guide hole (21a1) is formed to be open in the front and rear directions and is formed long in the left and right directions.

[0045] The above wire arrangement section (21b) has a lower section (21b1), an upper section (21b2), and a connecting section (21b3).

[0046] The above lower part (21b1) is provided on the left side of the insertion moving part (21a).

[0047] The above upper part (21b2) is provided above the lower part (21b1).

[0048] The above connecting member (21b3) connects the left part of the lower member (21b1) and the left part of the upper member (21b2).

[0049] In this wire arrangement section (21b), an underground distribution line (L) can be removably installed.

[0050]

[0051] *The above guide portion (21c) is arranged so as to be inclined upward on the right side of the upper portion (21b2) of the wire arrangement portion (21b). In this embodiment, the guide portion (21c) has a plate shape. Meanwhile, in this embodiment, the guide portion (21c) has a connecting groove (21c1) formed at the end thereof into which the fastening mechanism (51) of the leakage indicator mechanism (50) is inserted and removed.

[0052] The above-mentioned hook shaft (22) is provided at the front and rear of the insertion moving part (21b), respectively, and is inserted into the front plate fixing hole (11a) of the front plate (11) and the rear plate fixing hole (12a) of the rear plate (12).

[0053] The above first roller (23) is installed on the upper part of the lower part (21b1) of the wire arrangement section (21b) so as to be rotatable clockwise or counterclockwise with respect to the Y-axis. In this embodiment, a plurality of first rollers (23) may be provided.

[0054]

[0055] *The second roller (24) is installed on the upper part of the lower part (21b1) of the wire arrangement part (21b) to the left of the first roller (23) so as to be rotatable clockwise or counterclockwise with respect to the X-axis. In this embodiment, a plurality of second rollers (24) may be provided.

[0056] The third roller (25) is installed on the lower part of the upper part (21b2) of the wire arrangement section (21b) so as to be rotatable clockwise or counterclockwise with respect to the X-axis. In this embodiment, a plurality of third rollers (25) may be provided.

[0057] The fourth roller (26) is installed on the right side of the connecting member (21b3) of the wire arrangement section (21b) so as to be rotatable clockwise or counterclockwise with respect to the Z-axis. In this embodiment, a plurality of fourth rollers (26) may be provided.

[0058] This wire installation device (20) is inserted into the support device (10) or is provided so as to be rotatable clockwise or counterclockwise around the support axis (15) of the support device (10).

[0059] The above hanging mechanism (30) has a connecting portion (31), an extension portion (32), and a hanging portion (33), as shown in FIGS. 2, 3, and 6.

[0060] The above connecting portion (31) is installed so as to be rotatable clockwise or counterclockwise at the front end of the support shaft (15), and is located at the front of the front plate (11) of the support mechanism (10). In this embodiment, the connecting portion (31) can be removably installed at the front end of the support shaft (15).

[0061] The above extension part (32) is provided to extend to the left of the connection part (31).

[0062] The above-mentioned hook part (33) is provided on the left side of the extension part (32) and is detachably hooked to the hook shaft (22). In this embodiment, the hook part (33) may have a hook shape.

[0063] Meanwhile, in the present embodiment, the hanging mechanism (30) is provided in one position at the front of the support mechanism (10), but may also be provided at the rear of the support mechanism (10). Here, the hanging mechanism (30) provided at the rear of the support mechanism (10) is installed to the support mechanism (10) in the same manner as the hanging mechanism (30) provided at the front of the support mechanism (10).

[0064] The above leakage detection sensor (40), as illustrated in FIGS. 2 to 5, is installed in the wire installation device (20) and outputs a leakage detection signal when it detects a leakage. In this embodiment, the leakage detection sensor (40) is detachably fastened (for example, screw-fastened) to the guide portion (21c) of the wire installation device (20) to detect leakage to the guide portion (21c).

[0065] The above leakage current indicator device (50) has a fastening device (51), a fluorescent material receiving device (52), and a closing film (53), as shown in FIGS. 2 to 5.

[0066] The above fastening mechanism (51) is removably installed in the guide portion (21c). In the present embodiment, the fastening mechanism (51) forms a 'ㄷ' shape (clip shape) and is pressed into the joining groove (21c1) of the guide portion (21c). Meanwhile, the fastening mechanism (51) in the present embodiment may also have elasticity.

[0067] The above fluorescent substance receiving device (52) has an emission hole (52a) through which fluorescent substance is emitted, and a fluorescent substance (labeling substance) is received inside the fluorescent substance receiving device (52). In this embodiment, the fluorescent substance is made of a liquid type fluorescent substance.

[0068] The above-mentioned closing film (53) closes the discharge hole (52a) and is broken by the impact of the impact needle (62). In the present embodiment, the closing film (53) may have a hard thin film shape or a soft thin film shape, and in the case of a soft thin film, it is provided to be torn by the impact of the impact needle (62).

[0069] The above striking device (60) is equipped with a striking needle driving mechanism (61) and a striking needle (62), as shown in FIGS. 2 to 5.

[0070] The above-mentioned striking needle drive mechanism (61) is installed in the guide part (21c) so as to be arranged adjacent to the closing membrane (53), and is driven when a leakage detection signal is received from the leakage detection sensor (40). In the present embodiment, the striking needle drive mechanism (61) is provided on the left side of the closing membrane (53). Meanwhile, in the present embodiment, the striking needle drive mechanism (61) may be a solenoid-type driving device, and various types of driving methods may be applied as long as the striking needle (62) can be moved toward the closing membrane (53).

[0071] The above-mentioned striking needle (62) is installed in a striking needle driving mechanism (61) so as to be able to move laterally, and strikes the closing membrane (53) when the striking needle driving mechanism (61) is driven. In this embodiment, the striking needle (62) has a pointed tip and moves left and right by driving the striking needle driving mechanism (61).

[0072] Meanwhile, the underground distribution line support mechanism according to the present invention may be provided in multiple numbers along the front-back direction on the inner wall of the power trench (W), and in multiple numbers along the upper-lower direction on the inner wall of the power trench (W).

[0073]

[0074] FIG. 7 and FIG. 8 are operational diagrams for explaining the operation of the present invention. The operation of the present invention will be explained as follows with reference to FIG. 7 and FIG. 8.

[0075] When a leakage current occurs in the wire installation device (20) in the state where the present invention is installed as shown in FIGS. 2 and 5, the leakage detection sensor (40) detects this and outputs a leakage detection signal.

[0076] At this time, when the striking needle drive mechanism (61) receives a leakage detection signal from the leakage detection sensor (40), the striking needle drive mechanism (61) operates the striking needle (62).

[0077] Then, as shown in Fig. 7, the impact needle (62) strikes the closing membrane (53), breaks the closing membrane (53), and the fluorescent material is emitted through the emission hole (52a) of the fluorescent material receiving device (52), so that the fluorescent material is applied to the wire installation device (20).

[0078] In this way, if a fluorescent substance is applied to the wire installation device (20), the manager can visually confirm the occurrence of a current leakage when inspecting the underground distribution status, and can safely perform inspection work for current leakage.

[0079] Meanwhile, the process of installing an underground distribution line (L) in the present invention is described as follows.

[0080] In a state as shown in Fig. 4, the worker moves the wire installation device (20) to the left as shown in Fig. 8(a), and then rotates the wire installation device (20) counterclockwise.

[0081] Then, the wire installation device (20) rotates based on the support axis (15) and is positioned as shown in Fig. 8(b).

[0082] At this time, the hanging shaft (22) rotates along the wire installation mechanism (20) while avoiding the end of the support mechanism (10).

[0083] In addition, an opening hole (14a) is provided in the lower plate (14) of the support mechanism (10), so that interference does not occur between the support mechanism (10) and the wire installation mechanism (20) when the wire installation mechanism (20) rotates.

[0084] Thereafter, as shown in Fig. 8(b), the underground distribution line (L) is inserted into the wire arrangement body (21) of the wire installation device (20). At this time, the underground distribution line (L) is stably fixed to the wire arrangement part (21b) by the guide part (21c).

[0085] And, when the underground distribution line (L) is pulled forward or backward, the underground distribution line (L) can be easily moved by the second, third, and fourth rollers (24, 25, 26).

[0086] After the underground distribution line (L) is arranged in the front-back direction in this manner, when the wire installation device (20) is rotated clockwise to position it as shown in Fig. 8(c), the underground distribution line (L) moves downward to the right and is arranged on the upper surface of the support device (10). At this time, the wire installation device (20) is equipped with a first roller (23), so that even if the wire installation device (20) is not rotated to a high position, the underground distribution line (L) is easily moved to the support device (10) by the first roller (23).

[0087] Meanwhile, when the underground distribution line (L) installation work is completed, the worker inserts the wire installation device (20) into the support device (10) so that each of the hook shafts (22) is inserted into the front plate fixing hole (11a) and the rear plate fixing hole (12a) of the support device (10), and then hooks the hook part (33) of the hook device (30) onto the hook shaft (22) of the wire installation device (20), so that the wire installation device (20) is fixed to the support device (10) as shown in FIG. 3.

[0088]

[0089] As described above, the present invention has the effect of notifying a manager of a current leakage with the naked eye through a fluorescent material when a current leakage occurs, thereby allowing the manager to safely check (inspect) whether a current leakage has occurred when checking the underground power distribution status.

[0090] In addition, the present invention has the effect of allowing the underground distribution line (L) to be easily installed on the support mechanism (10) by fixing the underground distribution line (L) on the wire installation mechanism (20) while the wire installation mechanism (20) is positioned lower than the support mechanism (10) and moving the underground distribution line (L) upwards from the support mechanism (10) through the rotation of the wire installation mechanism (20).

[0091] In addition, the present invention has the effect of enabling the underground distribution line (L) to be easily placed in the wire installation device (20) through the guide portion (21c) when inserting the underground distribution line (L) into the wire installation device (20).

[0092] In addition, the present invention has the effect that when the wire installation device (20) is rotated counterclockwise, even if the wire installation device (20) is lower than the support device (10), the underground distribution line (L) is easily moved to the support device (10) by the first roller (23), so that the worker does not have to lift the wire installation device (20) high.

[0093] In addition, the present invention has the effect of allowing a hanging mechanism (30) to be installed on a support mechanism (10) with a simple structure, by using a support shaft (15) provided on the support mechanism (10) to fix a wire installation mechanism (20) to the support mechanism (10), and easily fixing the wire installation mechanism (20) to the support mechanism (10) through the hanging mechanism (10).

[0094]

[0095] Meanwhile, the present invention further includes a structure capable of safely inspecting the underground distribution status in a structure supporting an underground distribution line, and therefore the title of the present invention is defined as 'underground distribution status inspection-capable safety-improved underground distribution line support mechanism', and the subject matter of the present invention is defined as 'underground distribution line support mechanism'.

Claims

1. It is now possible to display leakage current. A front plate (11) having a front plate fixing hole (11a) opened to the left; a rear plate (12) located at the rear of the front plate (11) and having a rear plate fixing hole (12a) opened to the left; an upper plate (13) provided on the upper portions of the front plate (11) and the rear plate (12) to connect the front plate (11) and the rear plate (12); a lower plate (14) having an opening hole (14a) opened to the left and downwards provided on the left portion of the lower plate (14) to connect the lower portion of the front plate (11) and the lower portion of the rear plate (12); A support mechanism (10) having a support shaft (15) in which the front end penetrates the front plate (11) and protrudes forward of the front plate (11) and the rear end is installed on the front of the rear plate (12); and is installed on the inner wall of a power hole (W), and in which a receiving space (a) is formed by the connection of the front plate (11), the upper plate (13), the rear plate (12), and the lower plate (14); A wire arrangement body (21) having an insertion movable part (21a) that is inserted into the left side of the support mechanism (10) so as to be movable left and right, a lower part (21b1) provided on the left side of the insertion movable part (21a), an upper part (21b2) provided above the lower part (21b1), a connecting part (21b3) connecting the left side of the lower part (21b1) and the left side of the upper part (21b2), and a guide part (21c) that is arranged to be inclined upwardly on the right side of the upper part (21b2) of the wire arrangement part (21b); A hook shaft (22) provided at the front and rear of the insertion moving part (21b), respectively, and inserted and removed into the front plate fixing hole (11a) of the front plate (11) and the rear plate fixing hole (12a) of the rear plate (12); a first roller (23) installed on the upper part of the lower part (21b1) of the wire arrangement part (21b) so as to be rotatable clockwise or counterclockwise with respect to the Y-axis; a second roller (24) installed on the upper part of the lower part (21b1) of the wire arrangement part (21b) so as to be rotatable clockwise or counterclockwise with respect to the X-axis, located on the left side of the first roller (23); a third roller (25) installed on the lower part of the upper part (21b2) of the wire arrangement part (21b) so as to be rotatable clockwise or counterclockwise with respect to the X-axis; A fourth roller (26) is installed on the right side of the connecting member (21b3) of the wire arrangement section (21b) to be rotatable clockwise or counterclockwise based on the Z-axis; and a wire installation mechanism (20) that is inserted into the support mechanism (10) or is provided to be rotatable clockwise or counterclockwise based on the support axis (15) of the support mechanism (10); A hooking mechanism (30) having a connecting portion (31) that is installed to be rotatable clockwise or counterclockwise at the front end of a support shaft (15) and is located in front of a front plate (11) of a support mechanism (10), an extension portion (32) that is provided to extend to the left of the connecting portion (31), and a hooking portion (33) that is provided on the left side of the extension portion (32) and is detachably hooked to a hooking shaft (22); A leakage detection sensor (40) installed in a wire installation device (20) and outputting a leakage detection signal when a leakage is detected; A 'ㄷ' shaped fastening mechanism (51) that is detachably installed in a guide portion (21c); a fluorescent substance receiving mechanism (52) having an emission hole (52a) through which fluorescent substance is emitted and in which fluorescent substance is received inside the fluorescent substance receiving mechanism (52); a leakage current indicating mechanism (50) having a closing film (53) that closes the emission hole (52a) and is broken by the impact of a striking needle (62); A striking device (60) having a striking needle drive mechanism (61) that is installed in a guide portion (21c) so as to be arranged adjacent to a closing film (53) and is driven when a leakage detection signal is received from a leakage detection sensor (40); a striking needle (62) that is installed so as to be movable laterally on the striking needle drive mechanism (61) and strikes the closing film (53) when the striking needle drive mechanism (61) is driven; An underground power line support device characterized by including:

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