Wedge-shaped tensile clamp with function of preventing release of wire escape prevention-type safety structure capable of enabling indirect live-line work and wire fixing method using same

Abstract

The present invention relates to a wedge-shaped tensile clamp having a function of preventing the release of a wire escape prevention-type safety structure capable of enabling indirect live-line work and a wire fixing method using same and, more specifically, to the technical field regarding a wedge-shaped tensile clamp having a function of preventing the release of a wire escape prevention-type safety structure capable of enabling indirect live-line work and a wire fixing method using same, in which a pair of wedges can be advanced or retreated with a live-line work stick, a double fixing elastic pin can be moved vertically with the live-line work stick so that the pair of wedges can be retreated and then fixed or released, and the pair of wedges can be advanced and then fixed or released so that the fixing or separation of a wire can be carried out along with the indirect live-line work, and after the pair of wedges can be advanced, the wedges can be fixed so as to prevent loosening, thereby preventing the detachment of the wire.

Description

A safety structure for preventing wire detachment that allows indirect live-line work, a wedge-shaped tension clamp with a loosening prevention function, and a wire fixing method using the same.

[0001] The present invention relates to a wedge-shaped tension clamp with a safety structure and a loosening prevention function that can perform indirect live-line work and a wire fixing method using the same. More specifically, the present invention relates to a wedge-shaped tension clamp with a safety structure and a loosening prevention function that can perform indirect live-line work and a wire fixing method using the same, wherein a pair of wedges can be advanced or retreated with a live-line work stick, and a double fixing elastic pin can be moved up and down with the live-line work stick so that the pair of wedges can be retreated and then fixed or released, and the pair of wedges can be advanced and then fixed or released so that the wire can be fixed or separated through indirect live-line work, and the pair of wedges can be advanced and then fixed to prevent loosening, thereby preventing the wire from being detached.

[0002] In general, live line work refers to line work performed while power transmission continues without interrupting the power line. Live line work carries a very high risk of safety accidents, so it is performed in situations where power cuts are difficult, such as in transmission and distribution facilities. Workers performing live line work must wear insulating protective gear and protective gear.

[0003] Live work on power lines can be categorized into direct live work and indirect live work. Indirect live work involves indirect work using insulated tools such as hot sticks. While indirect live work is safe, it requires a lot of time.

[0004] Direct live-line work (DLP) involves workers wearing insulated gloves and working directly with live wires in an insulated bucket. While DLP is convenient and time-saving, it carries a high risk of electric shock, often resulting in casualties. DLP includes inspecting, repairing, installing, removing, and cleaning wire components such as support insulators. Depending on the task, either DLP or indirect DLP methods may be appropriate.

[0005] In the case of internal wiring during this live line work, when installing wires on the steel, they are connected using suspension insulators and wedge-shaped tension clamps. At this time, one side of the wedge-shaped tension clamp is installed on the suspension insulator, and the other side is installed by holding and fixing the wires.

[0006] Previously, bolt-tightening type tension clamps were used, but this was improved by using wedge-type tension clamps without bolt tightening, which saved bolt tightening time and was reflected in the design with the wire harness cost adjusted down by 2.4%.

[0007] Meanwhile, the general wedge-shaped tension clamp used as described above is configured such that a guide groove is formed on one side of the body, as in Utility Model Registration No. 20-0257876 and Utility Model Registration No. 20-0449746, and a pair of wedges are slidably coupled to the guide groove through a spring-elastic wedge support plate, and when an external force is applied to one side of the wedge on which a handle portion is formed and moved, the wedges on both sides are opened and spread along with the spring compression of the elastic support plate, and when the external force is released, the wedges on both sides are narrowed along with the return by the spring elasticity of the elastic support plate, thereby closing and gripping the wire.

[0008] However, the general wedge-shaped tension clamp as described above is a tool for indirect live-line work and does not have a special device for opening the wedge. Therefore, when installing wires using the wedge-shaped tension clamp or when removing the wedge-shaped tension clamp due to its installation or aging, the worker inevitably comes into direct contact with the wires in close proximity to the live line and performs direct live-line work such as installing and fixing the wires, and is constantly exposed to safety accidents such as electric shock.

[0009] Accordingly, an indirect live-line wedge-shaped tension clamp opening device has been developed that facilitates the installation of wires in a wedge-shaped tension clamp or the installation or removal of a wedge-shaped tension clamp for indirect live-line work, such as enabling the use of a wedge-shaped tension clamp for indirect live-line work at a distance with a safety distance secured, and that enables the opening and closing of the wedge of the wedge-shaped tension clamp by using the pressure of an elastic clamp opening means. However, there has been a problem that it is difficult to use for indirect live-line work on site because the work is unstable due to the impact method and the work is impossible when the work direction is different from the field conditions.

[0010] To explain further, a conventional wedge-shaped tension clamp comprises a body having a body plate having an elastic means insertion groove formed in the longitudinal direction and a pair of guide portions fixedly attached to both sides of the body plate and having a width that becomes narrower toward the front end of the body plate, an elastic means fitted into the elastic means insertion groove, an 'ㄱ'-shaped catching plate fixedly attached to the other end so that the catching plate is caught on one end of the elastic means insertion groove, a pin-shaped support member inserted into the inside of the elastic means, a wedge support plate installed so as to be operable by the elastic means, and a pair of wedges interlocked by the wedge support plate and installed so as to be slidable along the guide portion.

[0011] These conventional wedge-shaped tension clamps have the inconvenience of having to be separated from the track and then worked on because the pair of wedges must be continuously maintained in a state of being retracted backward when separating the wires, and when fixing the wires, the pair of wedges must be continuously maintained in a state of being retracted backward, the wires must be inserted, the fixing of the pair of wedges must be released, and the pair of wedges must be struck with a hammer or the like, which is a hassle.

[0012] In addition, the conventional wedge-shaped tension clamp has a problem in that when a vehicle crashes or other impact is applied to the track after the wire is fixed, the fixing force of the pair of wedges is made up only of the elastic means, so the fixing force is momentarily released, the wire comes off from the wedge-shaped tension clamp, and the wire comes off, causing frequent accidents on the track such as ground faults.

[0013] Recently, technologies for tension clamps for indirect live lines have been developed, but due to technical limitations, they are manufactured using bolt-tightening methods. This complicates the work process, such as bolt tightening for indirect live lines, which increases the cost of overhead wires and materials and construction. In addition, there is a fatal problem that bolts can loosen due to natural vibrations, causing wires to come off.

[0014] The present invention is a technology devised to solve the problems of the above-described prior art, and the conventional wedge-shaped tension clamp has the inconvenience of having to work after separating from the line because a pair of wedges must be kept in a state of being retracted backward when separating or fixing a wire, and the wire must be positioned between a pair of wedges and then fixed by striking the pair of wedges with a hammer or the like, which is inconvenient, and the problem of the wire coming off due to impact after being fixed occurs.

[0015] The main purpose of the present invention is to provide a safety structure, loosening prevention function, wedge-shaped tension clamp capable of indirect live-line work, which can prevent the wire from being loosened and detached from the pair of wedges due to impact by retracting and fixing a pair of wedges using a double-fixing elastic pin, moving the double-fixing elastic pin downward with a live-line work stick so that the pair of wedges automatically advance, thereby stably and firmly fixing the wire, and after the pair of wedges advance and fix the wire, moving the double-fixing elastic pin upward with a live-line work stick so that the pair of wedges are fixed so as to prevent them from being loosened. The present invention also provides a wedge-shaped tension clamp with a loosening prevention function capable of indirect live-line work, which can prevent the wire from being loosened and detached from the pair of wedges due to impact.

[0016] The present invention, in order to achieve the above-described purpose, comprises: a clamp body (100) having an insertion groove (110) formed in the front-back direction at the upper front; a pair of guide blocks (200) formed at the upper front of the clamp body (100); an elastic spring (300) installed by being inserted into the insertion groove (110); a support plate (400) installed by being seated on the upper surface of the clamp body (100) and elastically supported forward by the elastic spring (300); and a pair of wedges (500) installed on the inner side of the pair of guide blocks (200), the lower portion of which is joined to the support plate (400); And a double fixing elastic pin (600) that is installed through the clamp body (100) so as to be movable in the up-and-down direction, fixes or releases the state in which the pair of wedges (500) are moved backward, and fixes or releases the pair of wedges (500) in a safe structure that restricts the backward movement in the state in which the pair of wedges (500) are moved forward; The present invention proposes a wedge-type tension clamp with a safety structure and a loosening prevention function capable of indirect live-line work, characterized in that it comprises:

[0017] In addition, the double-fixed elastic pin (600) of the present invention is characterized by including a pair of pins (610) that are laterally inclined as they go upward to form elasticity in the outward direction and that protrude laterally but have a hooking portion (612) formed in a curved shape; and a fixing ring (620) that the pair of pins (610) pass through and has an inner diameter formed so that the hooking portion (612) is hooked.

[0018] In addition, the pin (610) of the present invention is characterized in that it is formed to be bent laterally and includes a detachment prevention portion (614) formed to be positioned above the catch portion (612).

[0019] In addition, the clamp body (100) of the present invention is characterized in that it is configured to include a pinhole (120) that is formed through a penetration, but is formed vertically to be positioned at the rear of the insertion groove (110).

[0020] In addition, the clamp body (100) of the present invention is characterized in that it is configured to include a pinhole (120) that is formed to penetrate in the vertical direction so as to be positioned at the rear of the insertion groove (110) and has a first catch step (121) formed at the upper portion to correspond to the detachment prevention part (614).

[0021] In addition, the pinhole (120) of the present invention is characterized in that it includes a second catch step (122) formed to correspond to the fixing ring (620) at the upper portion.

[0022] In addition, the pair of wedges (500) of the present invention are each configured to include a fixing projection (510) that is formed to protrude from the lower surface and is formed to be long in the lateral direction; and the support plate (400) is characterized in that it is configured to include a guide groove (410) that is formed to correspond to the fixing projection (510) and is inserted so that the fixing projection (510) can move laterally; and a hooking groove (420) that is formed in front of the guide groove (410) and into which the upper end of the double fixing elastic pin (600) is inserted and withdrawn.

[0023] In addition, the double-fixed elastic pin (600) of the present invention is characterized by including a first inclined surface (630) formed at the upper end thereof and tilted rearward as it goes upward.

[0024] In addition, the pair of wedges (500) of the present invention are each configured to include a guide protrusion (520) that is formed to protrude from the lower surface and is formed to be long in the lateral direction so that the front surface is in close contact with the rear surface of the support plate (400); and the guide protrusion (520) is characterized in that it is configured to include a second inclined surface (522); which is formed so that the rear surface is inclined rearward as it goes upward.

[0025] In addition, the present invention provides a wire fixing method using a safety structure, loosening prevention function, wedge-shaped tension clamp capable of indirect live-line work, which includes a first fixing step (S10) of moving a pair of wedges (500) backward to open the wire and then fixing the pair of wedges (500) with a double fixing elastic pin (600); a wire settling step (S20) of moving a wire (W) backward with a live-line work stick so that it is positioned between the opened pair of wedges (500); and a wire fixing step (S30) of moving the lower part of the double fixing elastic pin (600) downward with another live-line work stick to release the fixation of the pair of wedges (500) and automatically move the pair of wedges (500) forward. And a second fixing process (S40) for moving the lower part of a double-fixing elastic pin (600) upward with a live-line work stick to secure a pair of wedges (500) moved forward in a safe structure to prevent loosening is provided. A wire fixing method using a wedge-shaped tension clamp with a safety structure loosening prevention function capable of indirect live-line work is proposed.

[0026] As presented above, the wedge-shaped tension clamp with safety structure and anti-loosening function for preventing detachment of wires and the wire fixing method using the same according to the present invention can be fixed or released after retracting a pair of wedges using a double fixing elastic pin, and can also be used to fix or release a pair of wedges advanced using the double fixing elastic pin, thereby obtaining the effect of being able to fix or release wires for indirect live-line work without detaching the wedge-shaped tension clamp from the line.

[0027] In addition, the present invention positions a wire between a pair of wedges while the pair of wedges are fixed after being retracted by a double-fixing elastic pin, and when the double-fixing elastic pins are moved downward with a live wire work stick, the pair of wedges are strongly advanced by elastic force to automatically fix the wire, thereby reducing the cumbersome process of striking a pair of wedges with a hammer or the like in the past, thereby improving work efficiency.

[0028] In addition, the present invention can obtain an effect of preventing the pair of wedges from moving backward due to impact by moving the double-fixing elastic pin upward with a live wire work stick after the pair of wedges have advanced so that the upper portion of the double-fixing elastic pin is positioned at the rear of the pair of wedges, thereby preventing the pair of wedges from moving backward and preventing the wire from being separated from the pair of wedges.

[0029] FIG. 1 is a perspective view showing a wedge-shaped tension clamp according to a preferred embodiment of the present invention.

[0030] FIG. 2 is a perspective view from another angle showing a wedge-shaped tension clamp according to a preferred embodiment of the present invention.

[0031] Figure 3 is an exploded perspective view showing a wedge-shaped tension clamp according to a preferred embodiment of the present invention.

[0032] Figure 4 is a bottom perspective view showing a pair of wedges according to a preferred embodiment of the present invention.

[0033] FIG. 5 is a perspective view and a bottom perspective view showing a pair of wedges, a support plate, and an elastic spring according to a preferred embodiment of the present invention.

[0034] Fig. 6 is an exploded perspective view showing a support plate and an elastic spring according to a preferred embodiment of the present invention.

[0035] Figure 7 is a perspective view (a) and a front view (b) showing a double-fixed elastic pin according to a preferred embodiment of the present invention.

[0036] FIG. 8 is a perspective view showing a wedge-shaped tension clamp with a pair of wedges moved rearward according to a preferred embodiment of the present invention.

[0037] Fig. 9 is a bottom perspective view showing the wedge-shaped tension clamp with the clamp body removed in Fig. 8.

[0038] Fig. 10 is a partial cross-sectional perspective view of Fig. 8.

[0039] FIG. 11 is a perspective view showing a wedge-shaped tension clamp in which a pair of wedges are moved forward and a wire is secured according to a preferred embodiment of the present invention.

[0040] Fig. 12 is a bottom perspective view showing the wedge-shaped tension clamp with the clamp body removed in Fig. 11.

[0041] Fig. 13 is a partial cross-sectional perspective view of Fig. 11.

[0042] Fig. 14 is a cross-sectional perspective view showing a clamp body according to a preferred embodiment of the present invention.

[0043] Figure 15 is a plan view and a side view showing a first fixing process according to a preferred embodiment of the present invention.

[0044] Fig. 16 is a plan view and a side view showing a wire mounting process according to a preferred embodiment of the present invention.

[0045] Figure 17 is a plan view and a side view showing a wire fixing process according to a preferred embodiment of the present invention.

[0046] Fig. 18 is a side view showing a second fixing process according to a preferred embodiment of the present invention.

[0047] *Detailed explanation of the main symbols in the drawing*

[0048] W: wire

[0049] 100: Clamp body

[0050] 110: Insertion groove 120: Pinhole

[0051] 121: First catch 122: Second catch

[0052] 123: Third step

[0053] 200: Guide block 300: Elastic spring

[0054] 400: Support plate

[0055] 410: Guide home 420: Hook home

[0056] 430: 1st assembly protrusion 440: Long hole

[0057] 450: Guide bracket 452: Guide wing

[0058] 454: Center protrusion 456: Second assembly protrusion

[0059] 460: Rivet

[0060] 500: Wedge

[0061] 510: Fixed protrusion 520: Guide protrusion

[0062] 522: Second slope

[0063] 600: Double fixed elastic pin

[0064] 610: Pin 612: Hook

[0065] 614: Anti-separation part 620: Fixed ring

[0066] 630: First slope

[0067] The present invention relates to a wedge-shaped tension clamp capable of indirect live-line work and a wire fixing method using the same. More specifically, the hooking portion (612) of the double-fixing elastic pin (600) is positioned at the bottom of the fixing ring (620) so that a pair of wedges (500) can be retracted, i.e., moved backward, and then fixed, and then the wire (W) is positioned between the pair of wedges (500) that have been retracted and fixed, and then the double-fixing elastic pin (600) is moved downward with a live-line work stick so that the pair of wedges (500) that have been retracted and fixed are moved forward, i.e., forward, by elastic force, so that the pair of wedges (500) are moved forward by elastic force, and the wire (W) is stably and firmly fixed by the pair of wedges (500), and after the pair of wedges (500) are moved forward, the live-line work stick The present invention relates to a safety structure, anti-loosening function, wedge-shaped tension clamp capable of indirect live-line work, in which a double-fixing elastic pin (600) is moved upward so that a catch (612) is positioned at the upper part of a fixing ring (620), and a pair of wedges (500) are moved forward and fixed in a safe structure by the double-fixing elastic pin (600) to prevent the wire (W) from coming off, and a wire fixing method using the same.

[0068]

[0069] The wedge-shaped tension clamp having a safety structure and a loosening prevention function capable of indirect live-line work of the present invention as described above comprises: a clamp body (100) having an insertion groove (110) formed in the front-back direction at the upper front; a pair of guide blocks (200) formed at the upper front of the clamp body (100); an elastic spring (300) installed by being inserted into the insertion groove (110); a support plate (400) installed by being seated on the upper surface of the clamp body (100) and elastically supported forward by the elastic spring (300); and a pair of wedges (500) installed on the inside of the pair of guide blocks (200) and having a lower portion joined to the support plate (400); And it is characterized by including a double fixing elastic pin (600) that is installed so as to penetrate the clamp body (100) and move up and down, and is fixed or released with a safe structure that limits the rearward movement when the pair of wedges (500) are moved rearward, and fixes or releases the state in which the pair of wedges (500) are moved forward.

[0070] In addition, the double-fixed elastic pin (600) of the present invention is characterized by including a pair of pins (610) that are laterally inclined as they go upward to form elasticity in the outward direction and that protrude laterally but have a hooking portion (612) formed in a curved shape; and a fixing ring (620) that the pair of pins (610) pass through and has an inner diameter formed so that the hooking portion (612) is hooked.

[0071] In addition, the pin (610) of the present invention is characterized in that it is formed to be bent laterally and includes a detachment prevention portion (614) formed to be positioned above the catch portion (612).

[0072] In addition, the clamp body (100) of the present invention is characterized in that it is configured to include a pinhole (120) that is formed through a penetration, but is formed vertically to be positioned at the rear of the insertion groove (110).

[0073] In addition, the clamp body (100) of the present invention is characterized in that it is configured to include a pinhole (120) that is formed to penetrate in the vertical direction so as to be positioned at the rear of the insertion groove (110) and has a first catch step (121) formed at the upper portion to correspond to the detachment prevention part (614).

[0074] In addition, the pinhole (120) of the present invention is characterized in that it includes a second catch step (122) formed to correspond to the fixing ring (620) at the upper portion.

[0075] In addition, the pair of wedges (500) of the present invention are each configured to include a fixing projection (510) that is formed to protrude from the lower surface and is formed to be long in the lateral direction; and the support plate (400) is characterized in that it is configured to include a guide groove (410) that is formed to correspond to the fixing projection (510) and is inserted so that the fixing projection (510) can move laterally; and a hooking groove (420) that is formed in front of the guide groove (410) and into which the upper end of the double fixing elastic pin (600) is inserted and withdrawn.

[0076] In addition, the double-fixed elastic pin (600) of the present invention is characterized by including a first inclined surface (630) formed at the upper end thereof and tilted rearward as it goes upward.

[0077] In addition, the pair of wedges (500) of the present invention are each configured to include a guide protrusion (520) that is formed to protrude from the lower surface and is formed to be long in the lateral direction so that the front surface is in close contact with the rear surface of the support plate (400); and the guide protrusion (520) is characterized in that it is configured to include a second inclined surface (522); which is formed so that the rear surface is inclined rearward as it goes upward.

[0078] The wire fixing method using the safety structure, loosening prevention function, wedge-shaped tension clamp capable of indirect live-line work of the present invention as described above comprises: a first fixing step (S10) of moving a pair of wedges (500) backwards to open the wire and then fixing the pair of wedges (500) with a double fixing elastic pin (600); a wire settling step (S20) of moving a wire (W) backwards with a live-line work stick so that it is positioned between the opened pair of wedges (500); and a wire fixing step (S30) of moving the lower part of the double fixing elastic pin (600) downwards with another live-line work stick to release the fixation of the pair of wedges (500) and automatically move the pair of wedges (500) forward; And it is characterized by including a second fixing process (S40) in which the lower part of the double-fixing elastic pin (600) is moved upward with a live wire work stick to secure a pair of wedges (500) moved forward in a safe structure to prevent them from loosening.

[0079]

[0080] Hereinafter, the present invention will be described in detail with reference to drawings 1 to 18 illustrating embodiments of the present invention.

[0081]

[0082] The clamp body (100), which is the main component of the present invention,

[0083] An insertion groove (110) is formed in the front-back direction at the upper front, and an elastic spring (300) to be described in detail later and a guide wing (452) of a guide bracket (450) at the lower part of a support plate (400), which will be described in detail later, are installed to be inserted into the insertion groove (110), and a guide block (200) to be described in detail later is formed on both sides of the insertion groove (110), and a support plate (400) to be described in detail later and a pair of wedges (500) are installed on the upper surface where the insertion groove (110) is formed.

[0084] In this case, the clamp body (100) of the present invention is installed on a suspension insulator through a cotter pin at the rear when installing a wire (W), and the wire (W) is fixed at the front through a pair of wedges (500) which will be described in detail later.

[0085] The above insertion groove (110) is formed in such a way that an elastic spring (300), which will be described in detail later, is inserted and installed, and the front is opened to facilitate the installation of the elastic spring (300) and the support plate (400), which will be described in detail later.

[0086] In addition, the clamp body (100) of the present invention is configured to include a pinhole (120) that is formed through the upper and lower direction so as to be positioned at the rear of the insertion groove (110), and the pinhole (120) is formed in a shape corresponding to the double fixing elastic pin (600) so that the double fixing elastic pin (600), which will be described in detail later, is installed through the pinhole.

[0087] At this time, the pinhole (120) is configured to include a first catch step (121) formed at the top, and the first catch step (121) supports and catches the lower part of the anti-separation part (614) of the double-fixing elastic pin (600), which will be described in detail later, thereby preventing the double-fixing elastic pin (600) from moving to the lower part of the pinhole (120) and being separated.

[0088] In addition, the pinhole (120) is configured to include a second catch step (122) formed to correspond to a fixing ring (620) of a double fixing elastic pin (600) to be described in detail later on the upper side. The second catch step (122) supports and catches the lower part of the fixing ring (620), thereby preventing the double fixing elastic pin (600) from moving to the lower part of the pinhole (120) and being detached, and also allows the catch portion (612) of the double fixing elastic pin (600), to be described in detail later, to pass through the fixing ring (620) and smoothly move downward.

[0089] In addition, the pinhole (120) is formed to correspond to the catch portion (612) at the upper portion, and is configured to include a third catch portion (123) formed to be positioned below the second catch portion (122). The third catch portion (123) supports and catches the lower portion of the catch portion (612) of the double-fixing elastic pin (600), which will be described in detail later.

[0090] Meanwhile, the clamp body (100) of the present invention is configured to include a pair of wedge guide grooves (not shown in the drawing) formed on both sides of the front of the upper surface so as to be inclined inward as they go forward, and the wedge guide grooves have a wedge guide projection (not shown in the drawing) protruding from the lower portion of a wedge (500) to be described in detail later, so that when the wedge (500) moves forward, it moves inward together, and when it moves backward, it moves outward together.

[0091]

[0092] A pair of guide blocks (200), which are the main components of the present invention,

[0093] It is formed on the upper front of the clamp body (100), and is formed to be inclined inward as it goes forward on both sides of the upper front of the clamp body (100), and is formed integrally with the clamp body (100), and a pair of wedges (500), which will be described in detail later, are installed on the inside so that the inner space of the pair of wedges (500) expands or contracts as they move forward and backward along the inner surface, so that the wire (W) can be fixed or unfixed.

[0094] That is, a pair of guide blocks (200) of the present invention support both sides of a pair of wedges (500), which will be described in detail later, so that the pair of wedges (500) can be stably opened or closed while moving forward and backward.

[0095] A pair of guide blocks (200) of the present invention are configured to include a wedge detachment prevention projection (not shown in the drawing) that protrudes inwardly on the upper inner surface, thereby preventing a pair of wedges (500) from being detached upwards.

[0096]

[0097] The elastic spring (300), which is the main component of the present invention,

[0098] It is installed by being inserted into the above insertion groove (110), and elastically supports the support plate (400) to be described in detail later, so that the support plate (400) and a pair of wedges (500) coupled to the support plate (400) to be described in detail later are elastically supported forward, so that the wire (W) can be stably fixed by the pair of wedges (500).

[0099] That is, the elastic spring (300) of the present invention is supported on the inner rear surface of the insertion groove (110) at the rear to generate elastic force forward, thereby elastically supporting the support plate (400) to be described in detail later, thereby elastically supporting a pair of wedges (500) coupled to the support plate (400) forward together with the support plate (400), so that the wire (W) can be maintained in a stable and firmly fixed state.

[0100] At this time, the elastic spring (300) of the present invention is supported forwardly by the front lower rear surface of the support plate (400) to be described in detail later, that is, the front lower rear surface of the guide bracket (450), and when a pair of wedges (500) moves backward, it is compressed backwardly by the support plate (400), and when the pair of wedges (500) are released from fixation by the double-fixing elastic pin (600) to be described in detail later, an elastic force is generated forward so that the pair of wedges (500) automatically move forward, that is, move forward.

[0101]

[0102] The support plate (400), which is the main component of the present invention,

[0103] It is installed and secured on the upper surface of the clamp body (100), and is elastically supported forward by the elastic spring (300), the lower part is inserted into the insertion groove (110) and moves forward and backward along the insertion groove (110), and the front of the elastic spring (300) described above is supported on the front lower rear side, and is elastically supported forward by the elastic spring (300), and a pair of wedges (500), which will be described in detail later, are combined on the upper part so that the pair of wedges (500) are elastically supported forward together by the elastic spring (300).

[0104] That is, the support plate (400) of the present invention moves the pair of wedges (500) forward and backward as the lower portions of the pair of wedges are joined, and the pair of wedges (500) open as they go backward, and close as they go forward.

[0105] At this time, the pair of wedges (500) are opened when moved rearward through the wedge guide groove of the clamp body (100) described above, and closed when moved forward.

[0106] The support plate (400) of the present invention is formed to correspond to a fixing projection (510) protruding from the lower surface of each of a pair of wedges (500) to be described in detail later, and is configured to include a guide groove (410) into which the fixing projection (510) is inserted so that the fixing projection (510) can move laterally, and a catch groove (420) formed in front of the guide groove (410) and into which the upper end of a double fixing elastic pin (600), to be described in detail later, is inserted and removed.

[0107] That is, when the support plate (400) of the present invention moves forward and backward by being coupled with the lower portion of a pair of wedges (500), i.e., the fixing projection (510) through the guide groove (410), not only does the pair of wedges (500) move together, but also the pair of wedges (500) open or close as the fixing projection (510) moves laterally.

[0108] The above-mentioned hooking groove (420) is configured so that when a pair of wedges (500), which will be described in detail later, is moved rearward while the hooking portion (612) of the double-fixing elastic pin (600), which will be described in detail later, is positioned at the bottom of the fixing ring (620), the double-fixing elastic pin (600) moves downward and then moves upward by elasticity and is inserted, thereby allowing the pair of wedges (500) to maintain the state of being moved rearward.

[0109] That is, the wedge-shaped tension clamp of the present invention pulls the double fixing elastic pin (600) downward so that the hooking portion (612) is positioned at the bottom of the fixing ring (620) without having to continuously use a pulling force or an opener to open a pair of wedges as is done in the past, and then moves the pair of wedges (500) backward, so that the upper portion of the double fixing elastic pin (600) is automatically caught by the fixing projection (510) and the state in which the pair of wedges (500) are moved backward is stably maintained, thereby not only making it possible to easily insert the wire (W) to be fixed into the inside of the pair of wedges (500), but also making it possible to easily separate the wire (W) fixed by the pair of wedges (500), i.e., using a live wire work stick.

[0110] At this time, the above-mentioned hooking groove (420) may be formed in front of the above-mentioned guide groove (410), but it is preferable to form it so as to be in communication with the above-mentioned guide groove (410), so that the upper part of the above-mentioned double-fixing elastic pin (600) can be hooked more naturally and smoothly.

[0111] In addition, the support plate (400) of the present invention is configured to include a first assembly protrusion (430) formed downward at the front end, a long hole (440) formed to extend forward and backward, a hemispherical center protrusion (454) having a diameter (not shown in the drawing) corresponding to the width (not shown in the drawing) of the long hole (440) is protruded on the upper surface, and a guide bracket (450) having a second assembly protrusion (456) formed downward at the front end to correspond to the first assembly protrusion (430), and a rivet (460) connecting the first assembly protrusion (430) and the second assembly protrusion (456).

[0112] In addition, the guide bracket (450) is configured to include a pair of guide wings (452) that are formed to be bent downward on one side and the other side, respectively, and are inserted into the insertion groove (110).

[0113] The first assembly protrusion (430) above allows the guide bracket (450) to be coupled to the support plate (400) by being joined through the rivet (460) after the front of the second assembly protrusion (456) of the guide bracket (450) is in close contact with the rear surface.

[0114] The above-mentioned hole (440) is inserted into the center protrusion (454) of the above-mentioned guide bracket (450) from the bottom so that the second assembly protrusion (456) can smoothly adhere to the first assembly protrusion (430) and facilitate the connection by the rivet (460).

[0115] At this time, the center protrusion (454) is inserted into the hole (440) and then moves in the longitudinal direction of the hole (440) to realize the effect of making it easier for the second assembly protrusion (456) and the first assembly protrusion (430) to be joined by a rivet (460).

[0116] The above pair of guide wings (452) are inserted into the insertion groove (110) and positioned on both sides of the upper portion of the elastic spring (300), thereby allowing the guide bracket (450) to move forward and backward along the insertion groove (110) without being affected by the elastic spring (300), thereby realizing the effect of allowing the support plate (400) to move forward and backward stably.

[0117] In addition, the rivet (460) may be configured to include a guide pin that is formed to protrude rearwardly at the rear and inserted into the inside of the elastic spring (300), although not shown in the drawing, thereby realizing the effect of enabling the compression and expansion of the elastic spring (300) to be performed stably and smoothly through the guide pin (610).

[0118]

[0119] A pair of wedges (500), which are the main components of the present invention,

[0120] It is installed on the inside of the above pair of guide blocks (200), and the lower part is connected to the support plate (400), moves forward and backward together with the support plate (400), is elastically supported forward by an elastic spring (300) together with the support plate (400), opens when moved backward so that an electric wire (W) can be inserted, and moves forward to fix the inserted electric wire (W).

[0121] A pair of wedges (500) of the present invention are formed to protrude downward on one side and the other side of the lower surface, respectively, and are configured to include a wedge guide projection formed to correspond to a wedge guide groove formed in the guide block (200), and when moving backward through the wedge guide projection, they move outward to open, and when moving forward through the wedge guide projection, they move inward to close.

[0122] In addition, as described above, a pair of wedges (500) of the present invention are configured to include a fixed projection (510) that is formed to protrude from the lower surface, but is formed to be long in the lateral direction and is inserted into the guide groove (410) of the support plate (400) so as to be movable laterally.

[0123] The above-mentioned fixing protrusion (510) is installed so that the lower part is inserted into the guide groove (410) of the support plate (400), so that when the support plate (400) moves forward and backward, a pair of wedges (500) move forward and backward together, and when the pair of wedges (500) moves backward, they move outward along the guide groove (410), and when the pair of wedges (500) moves forward, they move inward along the guide groove (410), so that the pair of wedges (500) can be opened or closed.

[0124] In addition, each of the pair of wedges (500) of the present invention is configured to include a guide protrusion (520) that is formed to protrude from the lower surface and is formed to be long in the lateral direction so that the front surface is in close contact with the rear surface of the support plate (400).

[0125] The above guide protrusion (520) is in close contact with the rear surface of the support plate (400), thereby preventing the support plate (400) from being dislodged toward the rear of the pair of wedges (500), thereby allowing the pair of wedges (500) and the support plate (400) to remain stably coupled.

[0126] At this time, the guide protrusion (520) is configured to include a second inclined surface (522) formed so that the rear surface is inclined toward the rear as it goes upward.

[0127] As described above, the second inclined surface (522) realizes the effect of allowing the upper portion of the double fixing elastic pin (600) to be easily caught on the fixing projection (510) by smoothly moving the pair of wedges (500) and the support plate (400) to the rear when the engaging portion (612) of the double fixing elastic pin (600), which will be described in detail later, is moved to the lower portion of the fixing ring (620), thereby smoothly moving the pair of wedges (500) and the support plate (400).

[0128] In addition, it is preferable that the fixing projection (510) and the guide projection (520) be formed with a protruding length smaller than that of the wedge guide projection, so that the support plate (400) can be positioned on the inside of the wedge fixing projection (510) and maintain a more stable connection with the pair of wedges (500).

[0129]

[0130] The double fixed elastic pin (600), which is the main component of the present invention,

[0131] The clamp body (100) is installed so as to be able to move up and down, and the pair of wedges (500) are fixed or released in a state where they are moved backward, and the pair of wedges (500) are fixed or released in a safe structure that limits backward movement in a state where they are moved forward, thereby enabling fixation or separation of a wire (W) without removing the wedge-shaped tension clamp of the present invention from the line through indirect live-line work using a live-line work stick.

[0132] That is, the double-fixing elastic pin (600) of the present invention prevents the pair of wedges (500) from moving backwards when opening a pair of wedges (500) to fix or separate a wire (W), thereby fixing the pair of wedges (500) in a state in which they have moved backwards by simply moving the pair of wedges (500) backwards with a live wire work stick, and prevents the pair of wedges (500) from moving forwards while the wire (W) is fixed, thereby preventing the pair of wedges (500) from moving backwards due to an external impact, thereby preventing the wire (W) from being separated from the pair of wedges (500), thereby realizing the effect of preventing the occurrence of a safety accident.

[0133] Specifically, the double-fixed elastic pin (600) of the present invention is configured to include a pair of pins (610) that are inclined laterally, i.e., outwardly, as they go upward, so that elasticity is formed in the outward direction, and that protrude laterally but have a hooking portion (612) formed in a curved shape, and a fixing ring (620) that the pair of pins (610) pass through and has an inner diameter formed so that the hooking portion (612) is hooked.

[0134] The above pair of pins (610) are made of a metal material having elasticity, and the lower part is integrally connected to form a “V” shape, thereby forming elasticity in the outward direction, and are installed by penetrating into the pin hole (120) of the clamp body (100) described above.

[0135] That is, the double-fixed elastic pin (600) of the present invention is installed by penetrating the pin hole (120) so that the lower portion of a pair of pins (610) is positioned at the lower portion of the pin hole (120), so that the worker can easily grip or release the lower portion using a live wire work stick, thereby moving up and down.

[0136] At this time, the above pair of pins (610) may be configured to further include a hook (not shown in the drawing) connected to the lower portion, and the hook realizes the effect of allowing the worker to move the double-fixed elastic pin (600) of the present invention up and down more easily through a live-line work stick.

[0137] In addition, the pair of pins (610) are installed through the pinhole (120) and naturally spread outward as elasticity is formed in the outward direction, thereby moving to the upper portion of the pinhole (120).

[0138] The above-mentioned fixing ring (620) is formed with an inner diameter so that the catch (612) catches, and when positioned above the catch (612), it restricts the pair of pins (610) from spreading outward, thereby preventing the pair of pins (610) from moving above the pin (610).

[0139] That is, when the pair of wedges (500) are moved rearward, the fixing ring (620) is positioned on the upper portion of the engaging portion (612) to minimize the length by which the upper portion of the pair of pins (610) protrudes above the pin hole (120), so that when the pair of wedges (500) are moved rearward, the fixing ring (620) is naturally pressed downward and simultaneously moves to the lower portion of the pair of wedges (500) and the support plate (400), and then the upper portion of the pair of pins (610) is caught in the engaging groove (420) so that the pair of wedges (500) can be maintained in the state of being moved rearward.

[0140] In addition, when the fixed ring (620) moves a pair of wedges (500) that have been moved backwards forward, the worker pulls the lower portion of the pair of pins (610) downward with a live work stick so that the upper portion of the pair of pins (610) is released from the engaging groove (420), thereby moving the pair of wedges (500) forward.

[0141] At this time, the pair of wedges (500) are moved backward by the double-fixed elastic pin (600) as described above, and when the compression force of the elastic spring (300) is at its maximum, they are fixed, and when the double-fixed elastic pin (600) is pulled downward to release the fixation, the elastic spring (300) expands by the compression force and moves forward with strong elastic force, thereby automatically obtaining the effect of fixing the wire (W) to the inside.

[0142] Accordingly, the wedge-shaped tension clamp of the present invention can obtain the effect of enabling the wire (W) to be fixed more smoothly by omitting the conventional method of striking the pair of wedges with a hammer or the like while the wire (W) is fixed between the pair of wedges.

[0143] In addition, when the pair of wedges (500) are moved forward, the pair of pins (610) are pressed upward by a worker with a live-line work stick, so that the engaging portion (612) moves to the upper portion of the fixing ring (620), and naturally spreads outward and moves upward along the pin hole (120) so that the upper portion comes into close contact with the rear surface of the pair of wedges (500), thereby maintaining a state in which the pair of wedges (500) are moved forward, i.e., a state in which the wire (W) is stably and firmly fixed to the pair of wedges (500).

[0144] At this time, it will be obvious that the catch (612) is inserted into the inside of the fixing ring (620) and becomes movable when the pair of pins (610) are moved inward by elasticity when the worker moves the pair of pins (610) in an upward or downward direction.

[0145] In addition, the above-described fixing ring (620) is restricted from moving downward by being caught on the second catch step (122) of the pinhole (120) described above, and when moved to the lower part of the catch (612) by a worker, the upward movement is restricted by the wire (W) fixed by a pair of wedges (500) and does not come off.

[0146] In connection with the above, the pin (610) is formed to be bent laterally and includes a separation prevention portion (614) formed to be positioned above the hook portion (612), and the separation prevention portion (614) not only prevents the fixing ring (620) from being separated from the upper portion of the pair of pins (610), but also prevents the double-fixing elastic pin (600) of the present invention from being separated from the upper portion of the pin hole (120) by being caught on the lower portion of the outer periphery of the wire (W) fixed by the pair of wedges (500) on the upper surface.

[0147] That is, when a pair of pins (610) are moved upward by a worker after a pair of wedges (500) are moved forward, the upper surface of the anti-separation part (614) is caught on the lower outer periphery of the wire (W) so that the catch part (612) can be moved to the upper part of the fixing ring (620), and when a pair of pins (610) are moved downward by a worker, the catch part (612) is moved to the upper and lower parts of the fixing ring (620), thereby preventing the pair of pins (610) from being separated from the lower part of the fixing ring (620), so that the pair of pins (610) are moved to the upper and lower parts of the fixing ring (620) while penetrating the pinhole (120).

[0148] In addition, when the double fixing elastic pin (600) of the present invention is fixed by positioning the wire (W) inside a pair of wedges (500) or moving the pair of wedges (500) backward to separate the wire (W) fixed by the pair of wedges (500), the worker pulls downwards through the live wire work stick so that the hooking portion (612) is positioned at the bottom of the fixing ring (620), and when the pair of wedges (500) is moved forward so that the wire (W) is fixed by the pair of wedges (500), the worker presses upwards through the live wire work stick so that the hooking portion (612) is positioned at the top of the fixing ring (620), thereby fixing or releasing the state in which the pair of wedges (500) are moved backward, as well as fixing the state in which the pair of wedges are moved forward. Or cancel it.

[0149] Accordingly, the wedge-shaped tension clamp of the present invention realizes the effect of enabling the fixing or separation process of a wire (W) to be performed as an indirect live-line work using a live-line work stick by means of the double fixing elastic pin (600).

[0150] Meanwhile, the double-fixed elastic pin (600) of the present invention, that is, a pair of pins (610), is configured to include a first inclined surface (630) formed to be inclined rearwardly as it goes upward at the upper end, and when the pair of wedges (500) are moved rearward while the engaging portion (612) is positioned below the fixing ring (620), the first inclined surface (630) is in close contact with the rear surface of the guide protrusion (520), thereby realizing an effect in which the pair of pins (610) are pressed downward and at the same time, the pair of wedges (500) and the support plate (400) are naturally moved downward.

[0151] That is, when the pair of wedges (500) are moved rearward, the first inclined surface (630) and the second inclined surface (522) formed on the rear surface of the guide protrusion (520) described above naturally press the upper portion of the pair of pins (610) downward, and at the same time, the pair of wedges (500) and the support plate (400) are naturally moved downward.

[0152]

[0153] Hereinafter, a wire fixing method using a wedge-shaped tension clamp with a safety structure and loosening prevention function capable of indirect live-line work having the above configuration will be described in detail.

[0154] First, let's look at the wire fixing method using a wedge-shaped tension clamp with a safety structure that prevents loosening and allows for indirect live-line work.

[0155] A first fixing process (S10) of retracting and fixing a pair of wedges (500) using a wedge-shaped tension clamp with a safety structure and a loosening prevention function that can perform indirect live-line work, a wire placement process (S20) of positioning a wire (W) between a pair of wedges (500), a wire fixing process (S30) of advancing a pair of wedges (500) forward, and a second fixing process (S40) of fixing the advanced pair of wedges (500) are performed.

[0156] At this time, for the wire fixing method using a wedge-shaped tension clamp with a safety structure that prevents loosening and allows for indirect live-line work, workers approach the wire (W) of the distribution line while securing a safe distance using a live-line bucket, but prepare a live-line work stick when approaching.

[0157] In addition, in performing a wire fixing method using a wedge-shaped tension clamp with a safety structure and a loosening prevention function that can prevent wire detachment capable of indirect live line work, it will be obvious that the wedge-shaped tension clamp of the present invention is installed on a distribution line, and it will be obvious that the rear of the wedge-shaped tension clamp of the present invention is fixed to a suspension insulator, and the front is fixed by a long wire machine, etc.

[0158] The above first fixing process (S10) is to open a pair of wedges (500) by moving them backwards and then fixing the pair of wedges (500) with a double fixing elastic pin (600). The worker uses a live wire work stick to hold the lower part of the double fixing elastic pin (600) and pull it downward so that the catch (612) can be positioned at the lower part of the fixing ring (620).

[0159] At this time, whether the catch (612) is located at the bottom of the fixing ring (620) can be determined by detecting the sound or impact when a pair of pins (610) are moved inward and then restored in the outward direction, and if the catch (612) is initially located at the bottom of the fixing ring (620), it is omitted.

[0160] Afterwards, the worker uses a live wire work stick to move a pair of wedges (500) backwards, and accordingly, the pair of wedges (500) are moved backwards through the double-fixing elastic pin (600) to maintain an open state.

[0161] The above wire placement process (S20) is to move the wire (W) backwards using a live wire work stick so that it is positioned between a pair of opened wedges (500). The worker uses the live wire work stick to position the wire (W) between a pair of opened wedges (500).

[0162] The above wire fixing process (S30) is to move the lower part of the double fixing elastic pin (600) downward with another live wire work stick to release the fixation of the pair of wedges (500) and automatically move the pair of wedges (500) forward. Since the worker used the live wire work stick to position the wire (W) between the pair of wedges (500) in the above wire settling process (S20), the lower part of the double fixing elastic pin (600) is moved downward with another live wire work stick.

[0163] At this time, if the live work stick that positions the wire (W) between a pair of wedges (500) due to the load of the wire (W) can be used again, there is no need to use another live work stick.

[0164] This wire fixing process (S30) moves the double fixing elastic pin (600) downward so that a pair of wedges (500) that are fixed backwards automatically move forward by elastic force, thereby fixing the wire (W) more stably and firmly.

[0165] The above second fixing process (S40) is to fix a pair of wedges (500) that have been moved forward by moving the lower part of the double fixing elastic pin (600) upward with a live work stick, and the worker uses the live work stick to hold the lower part of the double fixing elastic pin (600) and apply upward pressure so that the catch (612) can be positioned on the upper part of the fixing ring (620).

[0166] That is, the second fixing process (S40) maintains the state in which the double fixing elastic pin (600) naturally moves upward by the elastic force in the outward direction by positioning the hooking portion (612) above the fixing ring (620), so that the rear surface of a pair of wedges (500) is caught on the upper surface of the double fixing elastic pin (600) to limit the retreat, i.e., movement backward, of the pair of wedges (500), thereby providing a safe structure, so that even if an external impact occurs, the pair of wedges (500) do not move backward and open, thereby preventing the wire (W) from coming off.

[0167] At this time, it will be obvious that the positioning of the catch (612) on the upper part of the fixing ring (620) can be determined by detecting the sound or impact when a pair of pins (610) are moved inward and then restored in the outward direction.

[0168]

[0169] The above has been described with reference to a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and a person having ordinary skill in the art to which the present invention pertains can make various changes without departing from the gist of the present invention through the above embodiment.

Claims

1. A clamp body (100) having an insertion groove (110) formed in the front and rear direction at the upper front; and A pair of guide blocks (200) formed on the upper front of the above clamp body (100); and An elastic spring (300) installed by being inserted into the above insertion groove (110); and A support plate (400) that is installed and secured on the upper surface of the above clamp body (100) and elastically supported forward by the elastic spring (300); and A pair of wedges (500) installed on the inside of the above pair of guide blocks (200), the lower portion of which is joined to the above support plate (400); and A wedge-shaped tension clamp with a safety structure and loosening prevention function capable of indirect live-line work, characterized in that it comprises a double fixing elastic pin (600) that is installed so as to penetrate the clamp body (100) and be able to move up and down, and that fixes or releases the state in which the pair of wedges (500) are moved rearward, and that secures or releases the pair of wedges (500) in a safe structure that restricts rearward movement in a state in which the pair of wedges (500) are moved forward.

2. In paragraph 1, The above double fixed elastic pin (600) A pair of pins (610) that are inclined laterally as they go upward, forming elasticity in the outward direction, and protruding laterally, but forming a hooking portion (612) in a curved shape; and A wedge-shaped tension clamp capable of indirect live-line work, characterized in that it comprises a fixing ring (620) having an inner diameter formed so that the pair of pins (610) above penetrate and the catch (612) above is caught; and a safety structure for preventing loosening and a wedge-shaped tension clamp having a loosening function.

3. In paragraph 2, The above pin (610) A detachment prevention part (614) formed by being bent laterally and positioned above the catch part (612); and A wedge-shaped tension clamp with a safety structure and a loosening prevention function capable of indirect live-line work, characterized by including a first inclined surface (630) formed by slanting backwards as it goes upward at the upper end.

4. In paragraph 1, The above clamp body (100) A wedge-shaped tension clamp with a safety structure and a loosening prevention function capable of indirect live-line work, characterized in that it comprises a pinhole (120) formed vertically through the hole so as to be positioned at the rear of the insertion groove (110).

5. In paragraph 2, The above clamp body (100) A wedge-shaped tension clamp with a safety structure and loosening prevention function capable of indirect live-line work, characterized in that it comprises a pinhole (120) formed vertically to penetrate so as to be positioned at the rear of the insertion groove (110), and a first catch step (121) formed at the upper portion to correspond to the detachment prevention part (614).

6. In paragraph 5, The above pinhole (120) A wedge-shaped tension clamp with a safety structure and a loosening prevention function capable of indirect live-line work, characterized in that it comprises a second catch step (122) formed to correspond to the fixing ring (620) on the upper side.

7. In paragraph 1, The above pair of wedges (500) Each is configured to include a fixed projection (510) that is formed protruding from the lower surface and is formed long in the lateral direction; The above support plate (400) A guide groove (410) formed to correspond to the above-mentioned fixing protrusion (510) and inserted so that the above-mentioned fixing protrusion (510) can move laterally; and A wedge-shaped tension clamp with a safety structure and a loosening prevention function capable of indirect live-line work, characterized in that it comprises a catch groove (420) formed in front of the guide groove (410) and into which the upper end of the double-fixing elastic pin (600) is inserted and withdrawn.

8. In paragraph 1, The above pair of wedges (500) Each of the guide protrusions (520) is formed protrudingly on the lower surface and is formed long in the lateral direction so that the front side is in close contact with the rear side of the support plate (400); The above guide protrusion (520) A wedge-shaped tension clamp with a safety structure and a loosening prevention function capable of indirect live-line work, characterized in that it comprises a second inclined surface (522) formed by slanting rearward as the rear surface goes upward.

9. In the wire fixing method using a wedge-shaped tension clamp with a safety structure and loosening prevention function that can perform indirect live-line work as per any one of the clauses 1 to 5, 7 and 8, A first fixing process (S10) of moving a pair of wedges (500) backwards to open the opening and then fixing the pair of wedges (500) with a double fixing elastic pin (600); and A wire placement process (S20) in which the wire (W) is moved backwards using a live wire work stick so that it is positioned between a pair of opened wedges (500); and A wire fixing process (S30) in which the lower part of the double-fixing elastic pin (600) is moved downwards with another live wire work stick to release the fixation of the pair of wedges (500) and automatically move the pair of wedges (500) forward; and A wire fixing method using a safety structure, loosening prevention function, wedge-shaped tension clamp capable of indirect live-line work, characterized in that it comprises a second fixing process (S40) in which the lower part of a double-fixing elastic pin (600) is moved upward with a live-line work stick to secure a pair of wedges (500) moved forward in a safe structure to prevent loosening.

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