Overhead Line Fixing Equipment With Improved Safety

Abstract

The present invention relates to a safety-enhancing overhead power line fixing mechanism using a support insulator, comprising a pole connection mechanism (10), a cross arm position adjustment mechanism (20), a cross arm (30), an LP insulator (80), a pressure sensing sensor (40), an abnormal warning light (50), a transmitter (60), and a control unit (70), thereby having the effect of quickly notifying of the occurrence of an abnormal load on the overhead power line and moving and fixing the cross arm in various horizontal directions in response to the installation environment of the overhead power line, while making it simple and convenient.

Description

Technology Field

[0001] The present invention relates to a fixing mechanism for an overhead power distribution line with improved safety using a support insulator. Background Technology

[0002] Electricity generated at power plants is transmitted to each substation via transmission towers, and after undergoing several stages of voltage transformation, it is distributed to each consumer through overhead distribution lines.

[0003] Meanwhile, the overhead power line (1) is installed through a utility pole (2), a crossarm (3) is installed on the utility pole (2), and the overhead power line (1) is installed through an insulator (4) installed on the crossarm (3). (See FIG. 1)

[0004] However, conventionally, it was not possible to immediately detect when an abnormal load was applied to overhead power lines, making it difficult to take prompt action when an abnormality occurred.

[0005] Furthermore, conventionally, when adjusting the position of crossarms according to the installation environment of overhead distribution lines, workers had to manually connect and disconnect the crossarms and their fixing brackets to move them. Consequently, positioning crossarms in various locations was very cumbersome and dangerous, which limited the ability to install overhead distribution lines in response to diverse installation environments. Prior art literature

[0006] Republic of Korea Registered Patent No. 10-2153690 The problem to be solved

[0007] The present invention was developed to solve the above-mentioned problems, and aims to provide an 'overhead power line fixing mechanism' that can quickly notify of the occurrence of abnormal loads on overhead power lines and move and fix the crossarms in various horizontal directions in response to the installation environment of the overhead power lines, while doing so simply and conveniently. means of solving the problem

[0008] The present invention for solving the above-mentioned problems is,

[0009] As it has become possible to detect the occurrence of abnormal load on the overhead power line (L),

[0010] A fastening plate (11) having a plate-shaped fixing part (11a), first and second fastening parts (11b, 11b') formed to penetrate in the front and rear directions respectively, and plate-shaped first and second fastening parts (11c, 11c') formed in the left and right directions of the fixing part (11a) respectively and positioned in the front direction of the fixing part (11a) so as to face each other, and plate-shaped first and second connecting parts (11c, 11c') connecting the fixing part (11a) and the first and second fastening parts (11b, 11b') respectively; a contact body (12) installed on the rear of the fixing part (11a), with the rear surface formed rounded so as to come into contact with the utility pole (P); A pole connecting mechanism (10) that is detachably installed on a pole (P) and is composed of: a fixing part (13a) that forms a 'U' shape and has its front surface in close contact with the rear surface of the pole (P); a bolt-shaped first and second fastening parts (13b, 13b') that are respectively provided at both ends of the fixing part (13a) and pass through first and second fastening holes (11b1, 11b1') and are located in the rear direction of the reinforcing bar moving insertion part (21); and nut-shaped first and second fastening parts (14, 14') that are respectively fastened to the first and second fastening parts (13b, 13b');

[0011] A crossarm moving member (21) having an insertion hole (21a1) formed to penetrate in the left-right direction, and first and second pin fixing holes (21a2, 21a2') formed to penetrate in the up-down direction and respectively communicating with the insertion hole (21a1) and spaced apart from each other in the left-right direction, and a pin guide part (21b) provided on the front side of the crossarm moving insertion part (21a), having a locking groove (21b1) opened in the downward direction, and a pin guide hole (21b2) having a lower end communicating with the upper end of the locking groove (21b1) and an upper end opening in the upward direction and having a width smaller than that of the locking groove (21b1); A fixing pin member (23) having first and second fixing pins (23a, 23a') that are respectively inserted and removed in the first and second pin fixing holes (21a2, 21a2') so as to be movable in the vertical direction, a connecting bar (23b) provided between the first and second fixing pins (23a, 23a') and protruding in the forward direction, and a guide pin (23c) provided at the front end of the connecting bar (23b) so as to be protruding downward, with a stopper fastening part (23c1) and a handle part (23c2) positioned in the vertical direction, inserted so as to be movable in the vertical direction into the pin guide hole (21b2) and the locking groove (21b1), and the handle part (23c2) positioned lower than the lower surface of the pin guide part (21b); A crossarm position adjustment mechanism (20) comprising: a stopper (22) which is detachably inserted and installed in a stopper fastening part (23c1), is movably inserted into a locking groove (21b1), and has a width greater than that of a pin guide hole (21b2);

[0012] A plurality of first and second communication holes (31, 31') forming a pair are provided in the left and right directions, wherein the first and second communication holes (31, 31') are formed to penetrate in the up and down directions and are respectively connected to the first and second pin fixing holes (21a2, 21a2'), and the first and second fixing pins (23a, 23a') are respectively inserted into and removed from the first and second communication holes (31, 31'), and a reinforcing bar (30) that is inserted so as to be movable in the left and right directions and inserted and removed from the insertion hole (21a1) of the reinforcing bar moving insertion part (21a);

[0013] LP insulator (80) on which an overhead power line (L) is installed, comprising: a fastening bar (81) that is detachably installed in a first communication hole (31) or a second communication hole (31'), with the lower end penetrating the cross arm (30) and protruding to the lower side of the cross arm (30); and an insulator part (82) installed on the upper end of the fastening bar (81) and located on the upper side of the cross arm (30); and

[0014] A pressure sensing sensor (40) positioned between the lower side of the insulator part (82) and the upper side of the reinforcing bar (30), which measures the pressure applied to the LP insulator (80) and outputs a measured pressure value;

[0015] An abnormal warning light (50) installed at the bottom of the fastening bar (81);

[0016] A transmitter (60) installed on a movable member (21);

[0017] A control unit (70) that operates an abnormal warning light (50) while outputting an abnormal load warning signal through a transmitter (60) when the measured pressure value from the pressure sensing sensor (40) is greater than or equal to a reference value.

[0018] It is characterized by including Effects of the invention

[0019] The present invention, according to the means for solving the above-mentioned problem, includes a pole connection mechanism (10), a cross arm position adjustment mechanism (20), a cross arm (30), an LP insulator (80), a pressure sensing sensor (40), an abnormal warning light (50), a transmitter (60), and a control unit (70), and has the effect of quickly notifying of the occurrence of an abnormal load on an overhead power distribution line and moving and fixing the cross arm in various horizontal directions in response to the installation environment of the overhead power distribution line, while making it simple and convenient. Brief explanation of the drawing

[0020] FIG. 1 is a drawing for explaining the prior art, and FIG. 2 is a perspective view showing the present invention in a state where the pressure sensing sensor and abnormal warning light of the present invention are not installed, and FIG. 3 is an exploded perspective view corresponding to FIG. 2, and FIG. 4 is a perspective view to illustrate a part of FIG. 3, and FIG. 5 is a side cross-sectional view for explaining the coupling relationship between the arm position adjustment mechanism and the arm of the present invention, and FIG. 6 is a partial cross-sectional view illustrating the combined relationship of the reinforcing bar, pressure sensing sensor, and abnormal warning light of the present invention, and FIG. 7 is an electrical configuration diagram for explaining the connection between the electrical components of the present invention, and FIGS. 8 to 11 are diagrams illustrating the operation of the present invention. Specific details for implementing the invention

[0021] The present invention is described below so that a person skilled in the art can easily implement it.

[0023] FIG. 2 is a perspective view showing the present invention in a state where the pressure sensing sensor and abnormal warning light of the present invention are not installed; FIG. 3 is an exploded perspective view corresponding to FIG. 2; FIG. 4 is a perspective view for explaining a part of FIG. 3; FIG. 5 is a side cross-sectional view for explaining the coupling relationship between the arm position adjustment mechanism and the arm of the present invention; FIG. 6 is a partial front cross-sectional view for explaining the coupling relationship between the arm, the pressure sensing sensor, and the abnormal warning light of the present invention; and FIG. 7 is an electrical configuration diagram for explaining the connection between the electrical components of the present invention. The configuration of the present invention is described with reference to FIG. 2 to FIG. 7 as follows. Meanwhile, in this embodiment, the directionality of the configuration of this embodiment is explained using the XYZ coordinates in FIG. 2, wherein the X-axis direction in FIG. 2 is defined as the left-right direction, the Y-axis direction in FIG. 2 as the front-back direction, and the Z-axis direction in FIG. 2 as the up-down direction. In addition, the direction of each component in this embodiment is merely an example, and the direction of each component may be interpreted differently depending on how the standard is set.

[0024] The safety-enhanced overhead distribution line fixing mechanism using a support insulator according to the present invention is capable of detecting the occurrence of an abnormal load on an overhead distribution line (L), and includes a pole connection mechanism (10), a cross arm position adjustment mechanism (20), a cross arm (30), an LP insulator (80), a pressure sensing sensor (40), an abnormal warning light (50), a transmitter (60), and a control unit (70).

[0025] As shown in FIGS. 2 to 4, the above-mentioned pole connecting mechanism (10) is equipped with a fastening plate (11), a contact body (12), a fixing body (13), and first and second fastening bodies (14, 14') and is installed (detachably installed) on a pole (P).

[0026] The above fastening plate (11) has a fixing part (11a), first and second fastening parts (11b, 11b'), and first and second connecting parts (11c, 11c').

[0027] The above-mentioned fixed part (11a) forms a plate shape. In this embodiment, the fixed part (11a) may form a square plate shape.

[0028] The first and second fastening parts (11b, 11b') are each provided with first and second fastening holes (11b1, 11b1') formed through the front and rear directions, and are formed on the left and right sides of the fixing part (11a), respectively, and are positioned in the front direction relative to the fixing part (11a) so as to face each other. In this embodiment, the first and second fastening parts (11b1, 11b') are plate-shaped, preferably square-shaped plates.

[0029] The first and second connecting parts (11c, 11c') respectively connect the fixing part (11a) and the first and second fastening parts (11b, 11b'). In this embodiment, the first and second connecting parts (11c, 11c') have a plate shape, preferably a square plate shape. In addition, in this embodiment, the first and second connecting parts (11c, 11c') are arranged at an angle so as to face each other.

[0030] The above-mentioned contact body (12) is formed rounded so that its rear surface contacts the main column (P) and is installed on the rear surface of the fixing part (11a). In this embodiment, the contact body (12) has a bar shape and a pair is provided and arranged facing each other.

[0031] The above-mentioned fixed body (13) is installed on the fastening plate (11) having a contact portion (13a) and first and second binding portions (13b, 13b').

[0032] The above-mentioned contact portion (13a) forms a 'U' shape, and its front surface is in close contact with the rear surface of the utility pole (P). In this embodiment, the contact portion (13a) is provided with a 'U'-shaped contact plate (13a1), and is in close contact with the utility pole (P) through the contact plate (13a1).

[0033] The first and second fastening parts (13b, 13b') are respectively provided at both ends (left and right ends) of the contact part (13a) and are positioned in the rear direction of the reinforcing bar moving insertion part (21) by passing through the first and second fastening holes (11b1, 11b1'). In this embodiment, the first and second fastening parts (13b, 13b') are in the shape of bolts.

[0034] The first and second fastening bodies (14, 14') are respectively fastened to the first and second binding parts (13b, 13b'). In this embodiment, the first and second fastening bodies (14, 14') have a nut shape. In this embodiment, when the first and second fastening bodies (14, 14') are respectively fastened to the first and second binding parts (13b, 13b'), the pole connecting mechanism (10) is tightly clamped and fixed to the pole (10).

[0035] The above-mentioned arm position adjustment mechanism (20) is installed in the pole connecting mechanism (10) having an arm moving member (21), a fixing pin member (23), and a stopper (22), as shown in FIGS. 2 to 5.

[0036] The above-mentioned cross-moving member (21) is installed in the pole connecting mechanism (10) having a cross-moving insertion part (21a) and a pin guide part (21b).

[0037] The above-mentioned arm movable insertion part (21a) is installed on the front of the fixing part (11a), having an insertion hole (21a1) formed to penetrate in the left-right direction and first and second pin fixing holes (21a2, 21a2') formed to penetrate in the up-down direction, communicating with the insertion hole (21a1) respectively and spaced apart from each other in the left-right direction. In this embodiment, the arm movable insertion part (21a) is formed in a square tube shape and is provided integrally with the fixing part (11a), and the first and second pin fixing holes (21a2, 21a2') are formed on the top plate of the arm movable insertion part (21a).

[0038] The above pin guide part (21b) is provided on the front side of the arm movable insert part (21a), having a locking groove (21b1) that is open downward and a pin guide hole (21b2) whose lower end is connected to the upper end of the locking groove (21b1) and whose upper end is open upward and has a width smaller than that of the locking groove (21b1). In this embodiment, the pin guide part (21b) is provided integrally with the arm movable insert part (21a).

[0039] The above fixing pin member (23) is equipped with first and second fixing pins (23a, 23a'), a connecting bar (23b), and a guide pin (23c), and fixes the position of the reinforcing bar (30) inserted into the reinforcing bar position adjustment mechanism (20).

[0040] The first and second fixing pins (23a, 23a') are each inserted and removed from the first and second pin fixing holes (21a2, 21a2') so as to be movable in the up and down direction. In this embodiment, the first and second fixing pins (23a, 23a') form a bar shape.

[0041] The above connecting bar (23b) is provided between the first and second fixing pins (23a, 23a') and protrudes in the forward direction. In this embodiment, the connecting bar (23b, 23b') forms a 'T' shape.

[0042] The guide pin (23c) is provided at the front end of the connecting bar (23b) such that the stopper fastening part (23c1) and the handle part (23c2) are positioned in the vertical direction, and is provided to protrude downward, so as to be inserted so as to be movable in the vertical direction into the pin guide hole (21b2) and the catch groove (21b1), and the handle part (23c2) is positioned lower than the lower surface of the pin guide part (21b). In this embodiment, the guide pin (23c) may have elasticity. Also, in this embodiment, the guide pin (23c) is longer than the first and second fixing pins (23a, 23a'). Meanwhile, in this embodiment, two guide pins (23c) may be provided facing each other, and in this case, the catch part (21b1) and the pin guide hole (21b2) are provided correspondingly.

[0043] The stopper (22) is detachably inserted into the stopper fastening part (23c1), movably inserted into the locking groove (21b1), and has a width greater than that of the pin guide hole (21b2). In this embodiment, the stopper (22) forms a nut shape and is threaded into the stopper fastening part (23c1). Meanwhile, in this embodiment, the stopper (22) can be fastened to the stopper fastening part (23c1) in various conventional ways.

[0044] As shown in FIGS. 2, 3, and 5, the above-mentioned arm (30) is provided with a plurality of first and second communication holes (31, 31') forming a pair in the left-right direction, and the first and second communication holes (31, 31') are formed to penetrate in the up-down direction and are respectively connected to the first and second pin fixing holes (21a2, 21a2'), and the first and second fixing pins (23a, 23a') are respectively inserted into and removed from the first and second communication holes (31, 31'), and are inserted so as to be movable in the left-right direction into the insertion hole (21a1) of the arm movable insertion part (21a) and are inserted so as to be removable. In this embodiment, the distance between the first communication hole (31) and the second communication hole (31') and the distance between the first pin fixing hole (21a2) and the second pin fixing hole (21a2') are the same. In addition, in this embodiment, the crossarm (30) has a square tube shape. Meanwhile, various insulators such as LP insulators (80) can be installed in the first and second communication holes (31, 31'), and the crossarm (30) may also be provided with a separate insulator installation hole in addition to the first and second communication holes (31, 31').

[0045] As shown in FIGS. 2, FIGS. 3, and FIGS. 6, the above LP insulator (80) is equipped with a fastening bar (81) and an insulator part (82), and an overhead power distribution line (L) is installed.

[0046] The above-mentioned fastening bar (81) is detachably installed in the first communication hole (31) or the second communication hole (31'), and its lower end penetrates the reinforcing bar (30) and protrudes downward from the reinforcing bar (30). In this embodiment, the fastening bar (81) has screw threads formed thereon.

[0047] The above insulator part (82) is installed at the top of the fastening bar (81) and is located on the upper side of the reinforcing bar (30). In this embodiment, the insulator part (82) has a plurality of insulator wings.

[0048] As shown in FIG. 6, the pressure sensing sensor (40) is positioned between the lower side of the insulator part (82) and the upper side of the crossarm (30), and measures the pressure applied to the LP insulator (80) and outputs a measured pressure value. In this embodiment, the pressure sensing sensor (40) can measure changes in the load applied to the overhead power line (L), and various conventional pressure sensing means may be applied, and the installation location may also be varied.

[0049] The above abnormal warning light (50) is installed at the bottom of the fastening bar (81), as shown in FIG. 6. In this embodiment, the abnormal warning light (50) is installed at the bottom of the fastening bar (81) so as to be detachably installed on the lower side of the cross arm (30). In addition, in this embodiment, the abnormal warning light (50) can output a warning light, and its installation location can be varied in various ways. Furthermore, in this embodiment, the abnormal warning light (50) is installed at the bottom of the fastening bar (81) while the LP insulator (80) is installed on the cross arm (30) using a bolt-nut method. Meanwhile, in this embodiment, the abnormal warning light (50) may function as a nut for fixing the LP insulator (80) when the LP insulator (80) is installed on the cross arm (30).

[0050] The transmitter (60) is installed on the movable member (21) as shown in FIG. 5. In this embodiment, the transmitter (60) can output an abnormal load warning signal to the outside, and its installation location can be varied in various ways.

[0051] The control unit (70) operates the abnormal warning light (50) by outputting an abnormal load warning signal through the transmitter (60) when the measured pressure value from the pressure sensing sensor (40) is greater than or equal to the reference value. In this embodiment, the transmitter (60) outputs the abnormal load warning signal to a separate management center. In addition, in this embodiment, the control unit (70) controls the operation of the pressure sensing sensor (40), the abnormal warning light (50), and the transmitter (60) as shown in FIG. 7. Meanwhile, in this embodiment, the control unit (70) is installed on the movable member (21) as shown in FIG. 5, but its installation location can be varied in various ways as long as it can perform the control function.

[0053] FIGS. 8 to 11 are diagrams illustrating the operation of the present invention. With reference to FIGS. 8 to 11, the operation of the present invention is described as follows.

[0054] The warning method for when an abnormal load occurs on the overhead power distribution line (L) in the present invention is described as follows.

[0055] In the present invention, when an excessive load is applied to an overhead power line (L) due to reasons such as falling of an object, an abnormal load occurs in the overhead power line (L), and the abnormal load is transmitted to the LP insulator (80).

[0056] At this time, the control unit (70) receives the measured pressure value of the LP insulator (80) from the pressure sensing sensor (40), but due to the excessive load, the measured pressure value deviates from the reference value.

[0057] Then, the control unit (70) activates the abnormal warning light (50) to notify the surrounding area that an abnormality has occurred in the overhead power line (L) as shown in Fig. 8, and notifies a separate management center of the abnormality in the overhead power line (L) through the transmitter (60).

[0058] Through this, people near the utility pole (P) and a separate manager can quickly detect abnormalities in the overhead power line (L).

[0059] Meanwhile, the method of moving the cross arm (30) in the horizontal direction (left and right direction) in the present invention to vary the position of the cross arm (30) according to the installation environment of the overhead power line (L) is described as follows.

[0060] As shown in FIG. 2, if the center of the crossarm (30) is installed on the utility pole (P), overhead power lines (L) can be installed at both ends of the crossarm (30). (See FIG. 9)

[0061] However, depending on the installation environment of the overhead power line (L), the crossarm (30) may need to be used in a cantilevered form.

[0062] In this case, the operator grasps the lower end of the guide pin (23c) and moves the fixing pin member (23) upward so that the first and second fixing pins (23a, 23a') of the fixing pin member (23) detach from the reinforcing member (21) and reinforcing member (30) as shown in FIGS. 9 and 10.

[0063] At this time, the fixing pin member (23) is stably moved upward by the guide pin (23c) and is not detached from the pin guide part (21b) by the stopper (22), so the risk of loss of the fixing pin member (23) is eliminated.

[0064] Afterward, when the position of the reinforcing bar (30) is moved while the reinforcing bar (30) is inserted into the reinforcing bar moving insertion part (21a), and the fixing pin member (23) is inserted into the first and second pin fixing holes (21a2, 21a2') of the reinforcing bar moving insertion part (21a) and the first and second connecting holes (31, 31') of the reinforcing bar (30), the reinforcing bar (30) is fixed to the reinforcing bar moving member (21) as shown in FIG. 11, and the reinforcing bar (30) is arranged in a cantilever shape.

[0066] The present invention, as described above, has the effect of enabling prompt action regarding abnormalities in the overhead power line (L) and LP insulator (80) by detecting the abnormal load applied to the LP insulator (80) when an abnormal load occurs in the overhead power line (L) and is transmitted to the LP insulator (80), and by notifying the surrounding area and a separate management center of the occurrence of the abnormal load.

[0067] In addition, the present invention has the effect of allowing the position of the crossarm (30) to be easily moved through simple operation, thereby enabling the crossarm (30) to be arranged in various ways in a simple manner according to the installation environment of the overhead power line (L).

[0068] In addition, the present invention has the effect of conveniently releasing the fixation of the reinforcing bar (30) through the fixing pin member (23), conveniently moving the fixing pin member (23) upward through the guide pin (23c), and conveniently preventing the fixing pin member (23) from coming off through the stopper (22) installed on the guide pin (23c).

[0070] Meanwhile, in the sense that the present invention further includes various structures applicable to overhead power distribution, such as an overhead power line abnormality notification structure, in a structure for fixing overhead power lines, the title of the invention is defined as "safety-enhancing overhead power line fixing mechanism using a support insulator," and the subject of the claim is defined as "overhead power line fixing mechanism." Explanation of the symbols

[0071] 10: Utility pole connecting mechanism 20: Crossarm position adjusting mechanism 30: Wancheol 40: Pressure sensing sensor 50: Abnormal warning light 60: Transmitter 70: Control Unit 80: LP Insulator P: Utility pole L: Overhead power line

Claims

Claim 1 A fastening plate (11) having a plate-shaped fixing part (11a) and first and second fastening holes (11b1, 11b1') formed through the front and rear directions, respectively, and plate-shaped first and second fastening parts (11b, 11b') formed on the left and right directions of the fixing part (11a) and positioned in the front direction of the fixing part (11a) so as to face each other, and plate-shaped first and second connecting parts (11c, 11c') connecting the fixing part (11a) and the first and second fastening parts (11b, 11b') respectively; a contact body (12) installed on the rear of the fixing part (11a), with the rear surface formed rounded so as to come into contact with the utility pole (P); A fixed body (13) having a contact portion (13a) that forms a 'U' shape and has its front surface in close contact with the rear surface of the pole (P), and bolt-shaped first and second fastening portions (13b, 13b') that are respectively provided at both ends of the contact portion (13a) and pass through first and second fastening holes (11b1, 11b1') and are located in the rear direction of the reinforcing bar moving insertion portion (21); A pole connecting mechanism (10) that is detachably installed on a pole (P), comprising: a first and second fastening body (14, 14') in the shape of a nut that is respectively fastened to the first and second fastening parts (13b, 13b'); and a reinforcing bar moving insertion part (21a) installed on the front of a fixing part (11a), having an insertion hole (21a1) formed to penetrate in the left-right direction, and first and second pin fixing holes (21a2, 21a2') formed to penetrate in the up-down direction and respectively communicating with the insertion hole (21a1) and arranged spaced apart from each other in the left-right direction, and a locking groove (21b1) opened in the downward direction, and a pin guide hole (21b2) whose lower end communicates with the upper end of the locking groove (21b1) and whose upper end is opened in the upward direction and has a width smaller than that of the locking groove (21b1), wherein the reinforcing bar moving insertion part (21a) A movable member (21) having a pin guide part (21b) provided on the front side;A fixing pin member (23) having first and second fixing pins (23a, 23a') that are respectively inserted and removed in the first and second pin fixing holes (21a2, 21a2') so as to be movable in the vertical direction, a connecting bar (23b) provided between the first and second fixing pins (23a, 23a') and protruding in the forward direction, and a guide pin (23c) provided at the front end of the connecting bar (23b) so as to be protruding downward, with a stopper fastening part (23c1) and a handle part (23c2) positioned in the vertical direction, inserted so as to be movable in the vertical direction into the pin guide hole (21b2) and the locking groove (21b1), and the handle part (23c2) positioned lower than the lower surface of the pin guide part (21b); A crossarm position adjustment mechanism (20) comprising: a stopper (22) which is detachably inserted and installed in a stopper fastening part (23c1), is movably inserted into a locking groove (21b1), and has a width greater than that of a pin guide hole (21b2); a crossarm (30) having a plurality of first and second communication holes (31, 31') forming a pair in the left and right directions, wherein the first and second communication holes (31, 31') are formed to penetrate in the up and down directions and are respectively connected to the first and second pin fixing holes (21a2, 21a2'), and the first and second fixing pins (23a, 23a') are respectively inserted and removed from the first and second communication holes (31, 31'), and is movably inserted in the left and right directions into an insertion hole (21a1) of a crossarm moving insertion part (21a) and is inserted and removed; and the first communication hole (31) or LP insulator (80) on which an overhead power line (L) is installed, comprising: a fastening bar (81) that is detachably installed in the second connecting hole (31') and whose lower end penetrates the cross arm (30) and protrudes to the lower side of the cross arm (30); an insulator part (82) installed on the upper end of the fastening bar (81) and located on the upper side of the cross arm (30); a pressure sensing sensor (40) disposed between the lower side of the insulator part (82) and the upper side of the cross arm (30) and measures the pressure applied to the LP insulator (80) and outputs a measured pressure value; an abnormal warning light (50) installed on the lower end of the fastening bar (81); and a transmitter (60) installed on the cross arm moving member (21).A power distribution line fixing mechanism characterized by including a control unit (70) that operates an abnormal warning light (50) while outputting an abnormal load warning signal through a transmitter (60) when the measured pressure value from a pressure sensing sensor (40) is greater than or equal to a reference value.

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