Supporting bar apparatus for connection of electric pole and distribution cable and method for tension maintenance of distribution cable therefor

Abstract

The present invention relates to a crossarm connection device for a utility pole and a distribution cable, and a method for maintaining the tension of a distribution cable using the same, which enables a worker to visually check the change in tension of a distribution cable and the degree thereof during maintenance work on a distribution line, and to take immediate measures such as tension adjustment during the maintenance work if necessary. The crossarm connection device for a utility pole and a distribution cable according to the present invention comprises a crossarm, an eye shackle, a suspension insulator, a first connecting fitting module, a tension clamp, a second connecting fitting module, and a tension change indicator. The tension change indicator comprises a field installation module installed on the utility pole, the crossarm, and the first connecting fitting module, and a mobile installation module carried by a worker.

Description

Technology Field

[0001] The present invention relates to a crossarm connection device between a utility pole and a distribution cable in the field of power distribution technology, and a method for maintaining the tension of a distribution cable using the same. More specifically, the invention relates to a crossarm connection device between a utility pole and a distribution cable and a method for maintaining the tension of a distribution cable using the same, which enables a worker to visually check the change and degree of tension of the distribution cable during maintenance work on a distribution line, and to take immediate measures such as tension adjustment during the maintenance work if necessary. Background Technology

[0003] Generally, crossbars are installed on utility poles of power distribution lines to span overhead power lines (hereinafter referred to as “distribution cables”), and suspension insulators are installed on the crossbars to mechanically support the distribution cables.

[0004] In other words, the distribution cables of the power distribution line are fixed to suspension insulators installed on utility poles and are loosely suspended in the air to have appropriate dip and tension.

[0005] In addition, a tension clamp is installed at one end of the suspension insulator to secure the power distribution cable, where the tension of the power distribution cable is applied.

[0006] FIG. 1 illustrates the connection structure between the crossarm (40), suspension insulator (10), and distribution cable (70) of an existing distribution line.

[0007] As described, one end of the tension clamp (30) is connected to the eye rod (11) of the suspension insulator (10) by a pin joint, and the other end is fixed to the power distribution cable (70).

[0008] That is, the existing tension clamp (30) has a 'U'-shaped arm (31) formed for coupling with the eye rod (11) of the suspension insulator (10), a connector pin (32) is mounted on this arm (31), and a split pin (33) is fitted to one end of the connector pin (32) to prevent it from detaching from the arm (31).

[0009] Accordingly, an eye shackle (60) is mounted on the end of the U-shaped rod (12) of the suspension insulator (10), and the eye shackle (60) is fixed to the crossarm (40) connected to the utility pole (1) with a ball shackle (50). Then, the eye rod (11) of the suspension insulator (10) is positioned between the arms (31) of the tension clamp (30), a connector pin (32) passes through the arms (31) and the eye rod (11), and a split pin (33) is inserted into the pin hole drilled at the end of the connector pin (32), thereby connecting the tension clamp (30) to the suspension insulator (10).

[0010] Furthermore, to elaborate on the existing connection structure between polymer suspension insulators and eye shackles, a structure is widely used in which the polymer suspension insulator is connected to an eye shackle coupled to a crossarm in a state where it can rotate in the vertical direction.

[0011] However, in the connection structure between the crossarms, suspension insulators, and distribution cables of such existing distribution lines, workers could not visually check for abnormalities or changes in the tension of the distribution cables.

[0012] In other words, there is a need for technology that allows workers to visually inspect changes and the extent of tension in distribution cables during maintenance work on distribution lines, and to take immediate measures, such as tension adjustment, during the maintenance work if necessary. Prior art literature

[0014] Korean Registered Patent No. 10-2584188 (Published Oct. 05, 2023), “Distribution line tension clamp integrated with suspension insulator” Korean Registered Patent No. 10-2065675 (Published Feb. 11, 2020), “Polymer suspension insulator device with connecting fitting” Korean Registered Utility Model No. 20-0338601 (Published Jan. 16, 2004), “Clamp-integrated polymer suspension insulator” The problem to be solved

[0015] An embodiment of the present invention provides a crossarm connection device for a utility pole and a distribution cable, and a method for maintaining the tension of a distribution cable using the same, which enables a worker to visually check the change and degree of tension of a distribution cable during maintenance work on a distribution line and, if necessary, take immediate measures such as tension adjustment during the maintenance work. means of solving the problem

[0017] A crossarm connection device for a utility pole and a distribution cable according to an embodiment of the present invention comprises: a crossarm that is horizontally coupled to the utility pole so as to be perpendicular to the utility pole of the distribution line, wherein a side in contact with the utility pole is defined as the rear side and a side opposite to the rear side is defined as the front side, and a slot-shaped guide hole is formed along the horizontal direction on the front side; an eye shackle coupled to the crossarm via a ball shackle; a polymer suspension insulator formed of a polymer, which is an insulating material; a first connecting bracket module installed across the eye shackle and the polymer suspension insulator for vertical rotational coupling of the polymer suspension insulator to the eye shackle; a tension clamp to which the distribution cable of the distribution line is fixed; a second connecting bracket module installed across the polymer suspension insulator and the tension clamp for coupling the front end of the polymer suspension insulator and the tension clamp based on the state in which the polymer suspension insulator is coupled to the eye shackle; and the distribution cable fixed to the tension clamp. It performs the function of indicating a change in tension and may include a tension change indicator unit comprising a field installation module installed on the utility pole, crossarm, and first connecting bracket module, and a mobile installation module carried by a worker.

[0018] Additionally, the above-mentioned arm may include an upper surface connecting the upper ends of the front and rear surfaces and a lower surface connecting the lower ends of the front and rear surfaces, and the eye shackle may be coupled to the upper and lower surfaces of the above-mentioned arm through the ball shackle.

[0019] In addition, the field installation module of the tension change indicator comprises: a position-adjustable support block including a main body block installed to allow selective fixing at various positions by sliding along the lower surface of the cross arm inside the cross arm, and a support bar formed in a length-adjustable shape with one end fixed to the main body block while the other end is drawn out to the outside of the cross arm through a guide hole of the cross arm; a housing installed on the utility pole and having an opening / closing door; a tension indicator plate housed in the housing, drawn out from the housing when necessary and detachably coupled to the front end of the support bar of the position-adjustable support block, and formed to be foldable and unfoldable along the vertical direction while having a scale displayed along the vertical direction on one surface based on the unfolded state; and a sensor fixing ring formed on the upper part of the polymer suspension insulator-side connecting bracket among the first connecting bracket modules and having a circular ring shape; and the mobile installation module of the tension change indicator comprises a module carried by a worker and having a diameter equal to the inner diameter of the sensor fixing ring so as to be fitted and fixed into the sensor fixing ring of the field installation module. A laser pointer unit comprising a small cylindrical body and a laser sensor installed inside the body to irradiate a laser in a horizontal direction from the center of one side of the body, and a display mechanism carried by an operator to display the laser display position of the laser pointer unit relative to the tension display plate of the field installation module on the tension display plate, wherein for each polymer suspension insulator connected to the crossarm through the respective eye shackle and first connecting bracket module, the tension of the tension clamp and the power distribution cable connected thereto is displayed on the tension display plate through the laser pointer unit mounted on the corresponding polymer suspension insulator.The change in tension and the degree of change of the distribution cable connected to each polymer suspension insulator may be confirmed through the change in tension indication points of the tension clamp and distribution cable for each polymer suspension insulator displayed on the tension indication plate.

[0020] A method for maintaining the tension of a power distribution cable according to one embodiment of the present invention comprises: (a) a step of adjusting the position of a position-adjustable support block within a crossarm to verify the tension of a power distribution cable connected to one of the polymer suspension insulators installed on the crossarm; (b) a step of detachably coupling a tension display plate drawn from a housing installed on a utility pole to the support bar of the position-adjustable support block in a state in which the scale is unfolded to face the corresponding polymer suspension insulator; (c) a step of fitting and fixing a laser point unit to a sensor fixing ring formed on the corresponding polymer suspension insulator in step (b); (d) a step of irradiating a laser onto the tension display plate from a laser sensor of the laser point unit; (e) a step of verifying the change in tension of the power distribution cable by comparing the point position of the laser irradiated onto the tension display plate with the laser point position indicated by a display device during a previous tension verification operation; (f) a step of adjusting the fixing state of the distribution cable to the tension clamp so that, if the tension of the distribution cable deviates from a preset ideal tension range based on the tension change confirmed in step (e) above, it is adjusted to the ideal tension range; (g) a step of indicating the position of the laser point of the laser sensor on the tension display plate during this tension verification operation through the display mechanism; and a step of sequentially performing steps (a) to (g) for each of the polymer suspension insulators installed on the crossarm. Effects of the invention

[0022] According to an embodiment of the present invention, during maintenance work on a power distribution line, a worker can visually check the change in tension of a power distribution cable and the degree thereof, and if necessary, take immediate measures such as tension adjustment during the maintenance work. Brief explanation of the drawing

[0024] FIG. 1 is a configuration diagram illustrating the connection structure between the crossarm, suspension insulator, and distribution cable of an existing distribution line. FIG. 2 is a configuration diagram illustrating, based on a plan view, a crossarm connection device for a utility pole and a distribution cable according to an embodiment of the present invention. FIG. 3 is a configuration diagram illustrating a part of the configuration of a crossarm connection device for a utility pole and a distribution cable according to an embodiment of the present invention, shown from the direction "A" of FIG. 2. FIG. 4 is a configuration diagram illustrating a part of the configuration of a crossarm connection device for a utility pole and a distribution cable according to an embodiment of the present invention, shown in the direction "B" of FIG. 2. FIG. 5 is a block diagram conceptually illustrating a tension change indicator in a crossarm connection device between a utility pole and a distribution cable according to an embodiment of the present invention. FIG. 6 is a configuration diagram illustrating the usage state of a crossarm connection device for a utility pole and a distribution cable according to an embodiment of the present invention. FIG. 7 is a flowchart illustrating a method for maintaining power distribution cable tension according to one embodiment of the present invention. Specific details for implementing the invention

[0025] The following detailed descriptions relating to the present invention refer to the accompanying drawings, which are embodiments in which the present invention may be practiced and are illustrated as examples of such embodiments. These embodiments are described in detail to sufficiently enable those skilled in the art to practice the present invention. It should be understood that various embodiments of the present invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. Furthermore, it should be understood that the location or arrangement of individual components within each described embodiment may be changed without departing from the spirit and scope of the present invention.

[0026] Accordingly, the following detailed description is not intended to be taken in a limiting sense, and the scope of the invention is limited only by the appended claims, including all equivalents to those claimed therein, provided they are properly described. Similar reference numerals in the drawings refer to the same or similar functions across various aspects.

[0027] The terms used in this invention have been selected based on currently widely used general terms, taking into account their functions within the invention; however, these terms may vary depending on the intent of those skilled in the art, case law, the emergence of new technologies, etc. Additionally, in specific cases, terms have been arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the relevant description of the invention. Therefore, the terms used in this invention should be defined not merely by their names, but based on their meanings and the overall content of the invention.

[0028] When a part of an invention is described as “comprising” a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Furthermore, terms such as “…part,” “…module,” etc., described in the specification refer to a unit that processes at least one function or operation, and this may be implemented in hardware or software, or as a combination of hardware and software.

[0029] Referring to FIGS. 2 to 7, a crossarm connection device for a utility pole and a power distribution cable according to an embodiment of the present invention and a method for maintaining power distribution cable tension using the same will be described.

[0030] First, a crossarm connection device for a utility pole and a power distribution cable according to one embodiment of the present invention will be described with reference to FIGS. 2 to 6.

[0031] FIG. 2 is a configuration diagram illustrating a crossarm connection device for a utility pole and a power distribution cable according to an embodiment of the present invention based on a plan view, FIG. 3 is a configuration diagram illustrating a part of the crossarm connection device for a utility pole and a power distribution cable according to an embodiment of the present invention in the direction "A" of FIG. 2, FIG. 4 is a configuration diagram illustrating a part of the crossarm connection device for a utility pole and a power distribution cable according to an embodiment of the present invention in the direction "B" of FIG. 2, FIG. 5 is a block diagram conceptually illustrating a tension change indicator in a crossarm connection device for a utility pole and a power distribution cable according to an embodiment of the present invention, and FIG. 6 is a configuration diagram illustrating the usage state of a crossarm connection device for a utility pole and a power distribution cable according to an embodiment of the present invention.

[0032] As described above, the crossarm connection device for a utility pole and a power distribution cable according to one embodiment of the present invention comprises a crossarm (100), an eye shackle (200), a suspension insulator (300), a first connecting bracket module (400), a tension clamp (600), a second connecting bracket module (700), and a tension change indicator (800).

[0033] Before proceeding with the explanation, it should be noted that in the connecting device for a utility pole and a power distribution cable according to one embodiment of the present invention, the eye shackle (200), the first connecting bracket module (400), the tension clamp (600), and the second connecting bracket module (700) utilize the configuration of the eye shackle, connecting bracket, and tension clamp used in the existing connection configuration between a utility pole and a power distribution cable. Therefore, a detailed description thereof is omitted in this embodiment, and they are briefly illustrated in a box shape in the drawings. Furthermore, it should be noted that the following description focuses on the main characteristic configurations according to the embodiment of the present invention.

[0034] The crossarm (100) is connected to the utility pole (P) in a horizontal direction so as to be perpendicular to the utility pole (P) of the power distribution line. Then, based on the fact that the side of the crossarm (100) that contacts the utility pole (P) is designated as the rear side (110) and the side opposite to this rear side (110) is designated as the front side (120), a slot-shaped guide hole (130) is formed along the horizontal direction on the front side (120).

[0035] The eye shackle (200) is joined to the arm (100) through the ball shackle (250).

[0036] To elaborate, the arm (100) includes an upper surface connecting the upper ends of the front and rear surfaces (120, 110) and a lower surface connecting the lower ends of the front and rear surfaces (120, 110), and the eye shackle (200) is connected to the upper and lower surfaces of the arm (100) through a ball shackle (250).

[0037] The suspension insulator (300) is formed from a polymer, which is an insulating material.

[0038] The first connecting fitting module (400) is installed across the eye shackle (200) and the polymer suspension insulator (300) for vertical rotational coupling of the polymer suspension insulator (300) to the eye shackle (200).

[0039] The tension clamp (600) secures the distribution cable (500) of the distribution line.

[0040] The second connecting fitting module (700) is installed across the polymer suspension insulator (300) and the tension clamp (600) to connect the front end of the polymer suspension insulator (300) and the tension clamp (600), based on the state in which the polymer suspension insulator (300) is connected to the eye shackle (200).

[0041] The tension change indicator (800) performs the function of indicating the tension change of a power distribution cable (500) fixed to a tension clamp (600), and the tension change indicator (800) is configured to include a field installation module (810) installed on a utility pole (P), a crossarm (100), and a first connecting bracket module (400), and a mobile installation module (820) carried by a worker.

[0042] And the field installation module (810) of the tension change indicator (800) is configured to include a position-adjustable support block (811), a housing (812), a tension indicator plate (813), and a sensor fixing ring (814).

[0043] The position-adjustable support block (811) is configured to include a main body block (811a) and a support bar (811b).

[0044] The main body block (811a) is installed so as to be able to slide along the lower surface of the arm (100) inside the arm (100) and selectively fixed at various sliding positions. Here, the configuration of the main body block (811a) capable of sliding on the lower surface of the arm (100) and selectively fixed at various sliding positions can be implemented in various forms through known technology, so a specific description and illustration thereof are omitted in this embodiment.

[0045] One end of the support bar (811b) is fixed to the main body block (811a), while the other end is drawn out to the outside of the arm (100) through the guide hole (130) of the arm (100), and the support bar (811b) is formed in a shape that allows for adjustment of its total length. Furthermore, since the configuration allowing for adjustment of the total length of the support bar (811b) can be implemented in various forms through known technology, a specific description and illustration thereof are omitted in this embodiment.

[0046] The housing (812) is installed on the utility pole (P), and the housing (812) has a door (812a) for opening and closing.

[0047] A tension indicator plate (813) is housed in a housing (812), and when necessary, this tension indicator plate (813) is withdrawn from the housing (812) and detachably coupled to the front end of the support bar (811b) of the position-adjustable support block (811). Here, the detachable coupling configuration of the tension indicator plate (813) to the front end of the support bar (811b) of the position-adjustable support block (811) can be implemented in various forms through known technology, so a specific description and illustration thereof are omitted in this embodiment.

[0048] And the tension indicator plate (813) is formed in such a way that it can be folded and unfolded along the vertical direction, and at the same time, a scale (813a) is displayed along the vertical direction on one side based on the unfolded state. Here, the configuration of the tension indicator plate (813) that can be folded and unfolded can be implemented in various forms through known technology, so a specific description and illustration thereof are omitted in this embodiment.

[0049] The sensor fixing ring (814) is formed on the upper part of the polymer suspension insulator (300) side of the first connecting bracket module (400), and this sensor fixing ring (814) is formed in the shape of a circular ring.

[0050] And the moving installation module (810) of the tension change indicator (800) is configured to include a laser pointer unit (821) and a display mechanism (822).

[0051] A laser pointer unit (821) is carried by a worker, and the laser pointer unit (821) is configured to include a cylindrical body (821a) and a laser sensor (821b).

[0052] The body (821a) is formed with a diameter equal to or smaller than the inner diameter of the sensor fixing ring (814) so ​​that it is fitted and fixed to the sensor fixing ring (814) of the field installation module (810).

[0053] A laser sensor (821b) is installed inside the body (821a) to irradiate a laser in a horizontal direction from the center of one side of the body (821a).

[0054] The indicator device (822) is carried by the worker and is intended to indicate the laser display position of the laser pointer unit (821) on the tension display plate (813) of the field installation module (810) on the tension display plate (813). That is, the indicator device (822) has the form of a pen.

[0055] Accordingly, for each polymer suspension insulator (300) connected to the crossarm (100) through each eye shackle (200) and first connecting bracket module (400), the tension of the tension clamp (600) and the power distribution cable (500) connected thereto is displayed on the tension display plate (813) through the laser pointer unit (821) mounted on the corresponding polymer suspension insulator (300), and the change in tension and the degree of change of the power distribution cable (500) connected thereto for each polymer suspension insulator (300) is confirmed through the change in the tension display points of the tension clamp (600) and the power distribution cable (500) for each polymer suspension insulator (300) displayed on the tension display plate (813).

[0056] Next, a method for maintaining power distribution cable tension according to an embodiment of the present invention will be described with reference to FIG. 7.

[0057] FIG. 7 is a flowchart illustrating a method for maintaining power distribution cable tension according to one embodiment of the present invention.

[0058] Before the explanation, the method for maintaining the tension of a power distribution cable according to one embodiment of the present invention is to use a crossarm connection device between a utility pole and a power distribution cable described with reference to FIGS. 2 to 6. In the following description, the configuration of the crossarm, position-adjustable support block, housing, tension display plate, sensor fixing ring, laser pointer unit, and display mechanism, etc., can be understood through the configuration described above with reference to FIGS. 2 to 6.

[0059] As described above, in step (S110) of the method for maintaining the tension of a power distribution cable according to one embodiment of the present invention, the position of a position-adjustable support block within the crossarm is adjusted to check the tension of a power distribution cable connected to one of the polymer suspension insulators installed in connection with the crossarm.

[0060] In step (S120), a tension indicator plate drawn from a housing installed on a utility pole is detachably coupled to the support bar of the position-adjustable support block in a spread state so that its scale faces the corresponding polymer suspension insulator.

[0061] In step (S130), a laser point unit is fitted and fixed to a sensor fixing ring formed on the corresponding polymer suspension insulator of step (S120).

[0062] In step (S140), a laser is irradiated onto the tension display plate from the laser sensor of the laser pointer unit.

[0063] In step (S150), the change in tension of the corresponding power distribution cable is confirmed by comparing the point position of the laser irradiated on the tension display plate with the laser point position indicated by the display device during the previous tension verification operation.

[0064] In step (S160), if the tension of the distribution cable deviates from a preset ideal tension range based on the tension change confirmed through step (S150), the fixing state of the distribution cable to the tension clamp is adjusted so as to be adjusted to the ideal tension range.

[0065] In step (S170), the position of the laser point of the laser sensor on the tension display plate during this tension verification operation is displayed through the display mechanism.

[0066] And the steps (S110) to (S170) described above are carried out sequentially for each of the polymer suspension insulators installed on the above-mentioned metal.

[0067] With the above-described configuration, it becomes possible for a worker to visually check the change in tension of a distribution cable and its extent during maintenance work on a distribution line, and then, if necessary, take immediate measures such as tension adjustment during the maintenance work.

[0069] As described above, although the present description has been explained with specific details such as specific components, limited embodiments, and drawings, this is provided merely to aid in a more comprehensive understanding of the invention, and the invention is not limited to the above embodiments. A person skilled in the art can make various modifications and variations from this description.

[0070] Therefore, the scope of the present invention should not be limited to the described embodiments, and all variations equivalent to or equivalent to the claims set forth below, as well as the claims themselves, shall be considered to fall within the scope of the present invention. Explanation of the symbols

[0072] 100 : Full Gold 110 : Back 120 : Front 120 : Guide hole 200 : Eye Shackle 250 : Ball Shackle 300: Polymer suspension insulator 400: First connecting fitting module 500 : Distribution cable 600 : Tension clamp 700: Second connecting fitting module 800: Tension change indicator 810: Field installation module 811: Adjustable support block 811a: Main body block 811b: Support bar 812 : Housing 812a : Door 813: Tension indicator plate 813a: Scale 814: Sensor fixing ring 820: Mobile installation module 821: Laser pointer unit 821a: Body 821b: Laser sensor 822: Display device P : Utility pole

Claims

Claim 1 A cross member (100) that is horizontally connected to a utility pole (P) of a power distribution line so as to be perpendicular to the utility pole (P), and based on the principle that one side in contact with the utility pole (P) is designated as the rear side (110) and the side opposite to the rear side (110) is designated as the front side (120), and a slot-shaped guide hole (130) is formed along the horizontal direction on the front side (120); an eye shackle (200) connected to the cross member (100) through a ball shackle (250); a polymer suspension insulator (300) formed of a polymer, which is an insulating material; a first connecting fitting module (400) installed across the eye shackle (200) and the polymer suspension insulator (300) for vertical rotational connection of the polymer suspension insulator (300) to the eye shackle (200); a tension clamp (600) to which the power distribution cable (500) of the power distribution line is fixed; the polymer A connection device for a utility pole and a power distribution cable, comprising: a second connecting bracket module (700) installed across the polymer suspension insulator (300) and the tension clamp (600) for connecting the front end of the polymer suspension insulator (300) and the tension clamp (600) based on the state in which the suspension insulator (300) is connected to the eye shackle (200); and a tension change indicator (800) that performs the function of indicating a change in tension of a power distribution cable (500) fixed to the tension clamp (600), and includes a field installation module (810) installed on the utility pole (P), the bracket (100), and the first connecting bracket module (400), and a mobile installation module (820) carried by a worker. Claim 2 In claim 1, the arm includes an upper surface connecting the upper ends of the front and rear surfaces (120, 110) and a lower surface connecting the lower ends of the front and rear surfaces (120, 110), and the eye shackle (200) is coupled to the upper and lower surfaces of the arm (100) through the ball shackle (250); the field installation module (810) of the tension change indicator (800) includes a main body block (811a) installed to allow selective fixing at various positions by sliding along the lower surface of the arm (100) inside the arm (100), and a support bar (811b) having one end fixed to the main body block (811a) while the other end is drawn out to the outside of the arm (100) through the guide hole (130) of the arm (100) and is formed in a shape that allows for length adjustment; and is installed on the utility pole (P). A housing (812) having an opening / closing door (812a); a tension display plate (813) that is housed in the housing (812), is withdrawn from the housing (812) when necessary, is detachably coupled to the front end of the support bar (811b) of the position-adjustable support block (811), and is formed to be foldable and unfoldable along a vertical direction, and simultaneously has a scale (813a) marked along a vertical direction on one side based on the unfolded state; and a sensor fixing ring (814) formed on the upper part of the polymer suspension insulator (300) side of the first connection fitting module (400), which is in the shape of a circular ring, and the movable installation module (810) of the tension change display unit (800) is carried by a worker and is formed with a diameter equal to or smaller than the inner diameter of the sensor fixing ring (814) so ​​as to be fitted and fixed to the sensor fixing ring (814) of the field installation module (810). A laser pointer unit (821) comprising a laser sensor (821b) installed inside the body (821a) to irradiate a laser in a horizontal direction from the center of one side of the body (821a);It includes a display mechanism (822) that is carried by a worker and displays the laser display position of the laser pointer unit (821) on the tension display plate (813) of the field installation module (810), and for each polymer suspension insulator (300) connected to the crossarm (100) through the eye shackle (200) and the first connecting bracket module (400), the tension of the tension clamp (600) and the power distribution cable (500) connected thereto is displayed on the tension display plate (813) through the laser pointer unit (821) mounted on the corresponding polymer suspension insulator (300), and through the change in the tension display points of the tension clamp (600) and the power distribution cable (500) for each polymer suspension insulator (300) displayed on the tension display plate (813), the tension of the tension clamp (600) and the power distribution cable (500) connected thereto for each polymer suspension insulator (300) A crossarm connection device for a utility pole and a power distribution cable, characterized by confirming the change in tension and the degree of change of the power distribution cable (500).

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