Attachment temporary support cleat

Abstract

To provide an attachment temporary support cleat capable of performing attachment / detachment to / from a cross arm of an electric wire safely, easily and efficiently in a short time.SOLUTION: An attachment temporary support cleat 1a of the present invention includes temporary support means 2 on which an attachment is attached, and latching means 3 for latching to a cross arm 51 of a utility pole. The temporary support means 2 comprises a mounting plate 4, a mounting member 5, a temporary support member 6 and a support member 7. The latching means 3 includes; a latching member 9 installed above the cross arm 51; a seat plate 10 coupled to the latching member 9; a connection member 11 connecting between the latching member 9 and the seat plate 10; a latching auxiliary tool 12 having a rectangular shape in plan view and installed below the latching member 9 while sandwiching the cross arm 51 between the latching auxiliary tool and the latching member; a coupling member 13 having one end coupled to the latching auxiliary tool 12 to be held by the seat plate 10 movably in a vertical direction and the other end to which a tip of a shared control stick is detachably coupled; and a spring housing part 15 provided on a lower surface 10a of the seat plate 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a support member (attachment temporary support cleat) used when connecting an attachment to a high-voltage cutout (three-phase, three-wire high-voltage switchgear) for the purpose of detecting ground fault points in overhead distribution lines, and in particular to a support member that can be easily attached and detached near the high-voltage cutout using a shared operating rod. [Background technology]

[0002] The high-voltage cutout is connected to the pole-mounted transformer while being supported at the tip of an arm attached to a utility pole. Work such as replacing the fuse built into this high-voltage cutout or installing a detection device for earth fault points on high-voltage distribution lines can be done with the cover open, and the cover of the high-voltage cutout is opened and closed by a common operating rod. The three attachments connected to the high-voltage cutout during fault location investigation are usually set on the attachment temporary support cleat and hooked onto the middle part of the cross arm using a common operating rod, and then removed one by one and connected to each high-voltage cutout.

[0003] Figure 7 is a diagram showing the state in which an attachment 52 is attached to a temporary attachment support cleat 50 according to the prior art. Note that Figure 7 shows the state in which only one attachment 52 is attached to the temporary attachment support cleat 50 so that the state of the part to which the attachment 52 is attached can be seen. Generally, the attachment temporary support cleat 50 is often installed so that it can be hooked onto the cross arm 51 of a utility pole, so that it can be attached to and removed from the cross arm 51 in a short time. Therefore, as shown in Figure 7, when removing the attachment 52, there is a problem that the attachment temporary support cleat 50 swings and easily comes off the cross arm 51. Furthermore, since the attachment temporary support cleat 50 also easily comes off when hooked onto the cross arm 51, it has conventionally been difficult to attach the attachment temporary support cleat 50 to the cross arm 51 efficiently in a short time so that it does not easily come off.

[0004] To address these issues, for example, Patent Document 1 discloses an invention called an "attachment temporary support cleat," which relates to a component for temporarily supporting attachments used when detecting ground fault points on overhead distribution lines. Using the reference numerals shown in the drawings of Patent Document 1, Patent Document 1 describes a temporary attachment support cleat 1 that is integrally formed with a fixing means 2 in which a cutout arm 15, having a plurality of cutouts 20 arranged side by side, is detachably fixed to a support arm 5 fixed to its tip, and a temporary support body 3 that temporarily supports an attachment 21. The fixing means 2 is made up of an upright plate 4, a hooking portion 6 that has a stepped shape with its lower tip facing downwards for hooking onto the support arm 5, a seat plate 7 that is arranged opposite the hooking portion 6, and a threaded rod 8 that is attached to the seat plate 7 so as to be able to thread back and forth, and the threaded rod 8 has a structure in which a connecting fitting 9 for connecting the tip of an operating rod is attached to the lower end, and a stopper member 10 that can clamp the support arm 5 between the hooking portion 6 and the screw rod 8 is attached to the upper end. With this structure, the attachment 21 is temporarily supported at an angle, so there is no risk of the attachment 21 falling due to vibration or interference from the power supply cable.

[0005] Furthermore, Patent Document 2 discloses an invention entitled "Temporary attachment support cleat" that relates to a support member that allows temporarily supported attachments to be easily visible from the surrounding area. Using the symbols shown in the drawings of Patent Document 2, Patent Document 2 describes an attachment temporary support cleat that includes a mounting plate 1 made of a transparent insulating material such as polycarbonate, a temporary support member 3 made of a resilient insulating material for temporarily supporting an attachment 2 provided on the front surface of the mounting plate 1, a hooking portion 6a provided on the upper back surface of the mounting plate 1 for hooking onto a PC support arm 5 that supports a high-voltage cutout 4, and having a stepped shape with the lower tip facing downward, and a seat plate 10 provided on the lower back surface of the mounting plate 1 and onto which a threaded rod 9 having a connecting member 8 at its lower part for connecting to the tip of an insulated work rod 7 is screwed. With this structure, the mounting plate 1 is made of a see-through insulating material, so that the temporarily supported state of the attachment 2 can be seen from the surrounding area. In addition, the attachment 2 is removably held by the elastic temporary support member 3, so that the attachment 2 is unlikely to fall off. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-115449 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-318720 Summary of the Invention [Problem to be solved by the invention]

[0007] In the invention disclosed in Patent Document 1, the threaded rod 8 must be rotated when the support arm 5 is clamped between the hook portion 6 and the retaining member 10, and the threaded rod 8 must also be rotated when the support arm 5 is released from the clamped state between the hook portion 6 and the retaining member 10, resulting in the problem that it takes time to attach and detach the support arm 5. In addition, when the retaining member 10 is rotated, the movement of the threaded rod 8 is transmitted to the seat plate portion 7, causing the hook portion 6 to swing, resulting in the problem that the hook portion 6 is likely to come off the support arm 5. Furthermore, in the invention disclosed in Patent Document 2, although the attachment 2 is difficult to detach from the temporary support member 3, the threaded rod 9 must be rotated to move the retaining member 11 up and down when attaching or detaching the attachment 2 to or from the PC support arm 5, which poses a problem that it is difficult to perform this task efficiently in a short time. Also, if the downward-protruding portion of the hooking portion 6a formed on the hooking member 6 is long, the distance that the retaining member 11 must be moved up and down becomes long, which requires the threaded rod 9 to be rotated a correspondingly greater amount. Therefore, it is not possible to form the downward-protruding portion of the hooking portion 6a long, which results in a problem that the hooking member 6 easily detaches from the PC support arm 5.

[0008] The present invention has been made in response to the above-mentioned conventional circumstances, and aims to provide an attachment temporary support cleat that allows electric wires to be attached and detached to cross arms safely, easily, quickly, and efficiently. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the first invention is an attachment temporary support cleat having a hanging means for hanging on the cross arm of a utility pole and a temporary support means to which an attachment is attached, and is used when connecting an attachment to a high-voltage cutout supported by the cross arm using a common operating rod, wherein the hanging means is characterized by comprising a hanging member installed above the cross arm, a hanging auxiliary device installed below the hanging member across the cross arm, a shaft whose upper end is connected to the hanging auxiliary device and whose lower end is connected to the tip of the common operating rod, a seat plate connected to the hanging member and holding the shaft so that it can move in a direction parallel to the central axis, and a positioning means for fixing the shaft to the seat plate.

[0010] In the first invention, when the common operating rod is operated to position the hooking member above the arm, and the shaft is pushed up with the common operating rod to bring the hooking aid into contact with the arm, and then the shaft is fixed to the seat plate by the positioning means, the arm is clamped between the hooking member and the hooking aid, thereby maintaining the state in which the temporary support means is fixed to the arm. Also, when the state in which the shaft is clamped between the hooking member and the hooking aid is released by the positioning means, and the common operating rod is operated to move the shaft downward to separate the hooking aid from the arm, the above-mentioned state in which the arm is clamped between the hooking member and the hooking aid is released, and the temporary support means can be removed from the arm.

[0011] The second invention is characterized in that, in the first invention, the upper end of the shaft is connected to the hanging aid so as to be rotatable around a central axis, and the positioning means comprises rod-shaped first and second protrusions which are provided on the side of the shaft so as to protrude in the radial direction of a circle and can be engaged with the seat plate, and a through hole provided in the seat plate, and the through hole comprises a circular insertion portion whose inner diameter is larger than the outer diameter of the shaft and smaller than the sum of the outer diameter and the length of the second protrusions, and a guide portion into which the second protrusion can be loosely inserted when the shaft is loosely inserted into this insertion portion, and when the first protrusion is engaged with the seat plate, the hanging aid is fixed to the seat plate at a position where the arm is clamped by the hanging member and the hanging aid, and when the second protrusion is engaged with the seat plate, the hanging aid is fixed to the seat plate at a position where the hanging member and the hanging aid can be removed from the arm.

[0012] In the second invention, in addition to the effects of the first invention, when the second protrusion is located within the guide portion of the through-hole provided in the seat plate as viewed in a direction parallel to the central axis of the shaft, the shaft is able to move in a direction parallel to the central axis, but in other cases the second protrusion is engaged with the seat plate, preventing the above-mentioned movement of the shaft. When the common operating rod is operated to rotate the shaft, when the first protrusion is engaged with the seat plate, the hanging auxiliary device is fixed to a position relative to the seat plate where the arm is clamped by the hanging member and the hanging auxiliary device, and when the second protrusion is engaged with the seat plate, the hanging auxiliary device is fixed to a position relative to the seat plate where the hanging member and the hanging auxiliary device can be removed from the arm.

[0013] The third invention is the second invention, characterized in that it is provided with a compression spring installed between the seat plate and the hanging aid to urge the hanging aid toward the hanging member, and the shaft body comprises a connecting portion having a second protrusion portion, connected to the hanging aid and provided with a locking portion, and a tubular body having a through hole which has a first protrusion portion and locks with the locking portion to prevent the connecting portion from rotating around the central axis while holding the connecting portion movably in a direction parallel to the central axis, and the tubular body is provided with a slip-out prevention portion which locks with the locking portion to prevent the connecting portion from slipping out of the insertion hole.

[0014] In the third invention, in addition to the effects of the second invention, when the second protrusion is not engaged with the base plate, the connecting part inserted into the insertion hole of the cylindrical body moves upward due to the biasing force of the compression spring, and this connecting part pushes up the hooking aid. Also, when the first protrusion is engaged with the base plate, the cylindrical body is fixed to the base plate so that it cannot move in a direction parallel to the central axis of the shaft body. Furthermore, because the retaining part prevents the connecting part from coming out of the insertion hole of the cylindrical body, when the hooking member is positioned above the arm and the cylindrical body is moved downward parallel to the central axis of the shaft body using the common operating rod, the connecting part also moves downward as if pulled by the cylindrical body.

[0015] The fourth invention is characterized in that, in any of the first to third inventions, the hooking member is provided with a stepped first hooking portion that protrudes downward and can be hooked onto a corner of the arm. In the fourth invention, in addition to the effect of any one of the first to third inventions, when the hooking member is installed above the arm, the first hooking portion hooks onto a corner of the arm, so that the hooking member is horizontal to the arm and is less likely to shift in a direction perpendicular to the longitudinal direction of the arm.

[0016] The fifth invention is characterized in that, in the fourth invention, the hooking aid is provided with a stepped second hooking portion that can be hooked onto a corner of the arm and that protrudes upward at a location opposite the first hooking portion. In the fifth invention, in addition to the effect of the fourth invention, when the hanging aid is installed below the arm, the second hanging portion hangs on the corner of the arm, so that the hanging aid is horizontal to the arm and is less likely to shift in a direction perpendicular to the longitudinal direction of the arm. [Effects of the Invention]

[0017] According to the first invention, unlike the conventional structure that requires rotating a threaded rod to hook the temporary support means to the arm, the arm is clamped between the hooking member and the hooking aid simply by pushing up the hooking aid with the common operating rod, allowing for efficient and quick attachment of the temporary support means to the arm. Furthermore, simply by moving the hooking aid downward with the common operating rod, the clamped state of the arm between the hooking member and the hooking aid is released, allowing for efficient and quick removal of the temporary support means from the arm. Furthermore, by fixing the shaft to the seat plate with the positioning means, the clamped state of the arm between the hooking member and the hooking aid is maintained, eliminating the risk of the temporary support means accidentally coming off the arm during the process of connecting the attachment to the high-voltage cutout. Therefore, the first invention is highly safe in use.

[0018] According to the second invention, the hanging aid can be fixed so that it cannot move up and down, or this fixed state can be released, by the simple operation of rotating the shaft using the common operating rod, which provides the effect of being easy to handle in addition to the effect of the first invention.

[0019] According to the third invention, there is no need to use a common operating rod to push up the shaft; simply by rotating the shaft to release the engagement of the first protrusion with the seat plate, the hanging aid is pushed up by the compression spring, thereby further enhancing the effect of the first invention, in that the arm is clamped between the hanging member and the hanging aid, and the work of attaching the temporary support means to the arm can be carried out efficiently in a short time.

[0020] According to the fourth invention, there is no risk of the temporary support means attached to the arm accidentally coming off the arm, so in addition to the effects of any of the first to third inventions, there is also the effect of safe use.

[0021] According to the fifth aspect of the invention, there is no risk that the temporary support means attached to the arm will inadvertently come off the arm, and the effect of the fourth aspect of the invention that it can be used safely is further exerted. [Brief explanation of the drawings]

[0022] [Figure 1] 1(a) to 1(c) are respectively a front view, a side view, and a top view of Example 1 of an attachment temporary support cleat according to an embodiment of the present invention, and FIG. 1(d) is a view of the seat plate in FIG. 1(b) from below. [Figure 2] 1(a) is an enlarged view of the part surrounded by the dashed line in FIG. 1(b), and FIG. 1(b) is an enlarged view of the cross section of the part surrounded by the dashed line in FIG. 1(a). [Figure 3] 1(a) is a diagram showing the state in which the hooking aid has been moved downward in FIG. 1(b), and FIG. 1(b) is an enlarged view of the area surrounded by the dashed line in FIG. 1(a). [Figure 4]10(a) and 10(b) are a front view and a side view, respectively, of Example 2 of an attachment temporary support cleat according to an embodiment of the present invention. [Figure 5] (a) and (b) are a front view and a cross-sectional view, respectively, of the connecting member shown in Figure 4(a), (c) is a cross-sectional view taken along line AA in Figure 4(a), and (d) is an enlarged view of the area surrounded by the dashed line in Figure 4(b). [Figure 6] 4(a) is a diagram showing the state in which the hooking aid has been moved downward in FIG. 4(b), and FIG. 4(b) is an enlarged view of the area surrounded by the dashed line in FIG. 4(a). [Figure 7] FIG. 10 is a diagram showing the state in which an attachment is mounted on a temporary attachment support cleat according to the prior art. DETAILED DESCRIPTION OF THE INVENTION

[0023] The attachment temporary support cleat according to the embodiment of the present invention, as well as its function and effect, will be specifically described with reference to FIGS. In the following description, expressions such as "underside," "above," and "below" are used, assuming the state in which the attachment temporary support cleat will actually be used. [Example]

[0024] Figures 1(a) to 1(c) are respectively a front view, a side view, and a top view of an attachment temporary support cleat 1a according to an embodiment of the present invention, and Figure 1(d) is a view of the seat plate 10 in Figure 1(b) viewed from below. Figure 2(a) is an enlarged view of the portion surrounded by the dashed line in Figure 1(b), and Figure 2(b) is an enlarged view of the cross section of the portion surrounded by the dashed line in Figure 2(a). Figure 3(a) is a view showing the state in Figure 1(b) where the hooking aid 12 has been moved downward, and Figure 3(b) is an enlarged view of the portion surrounded by the dashed line in Figure 3(a). 1(a) to 1(c), the arm 51 is indicated by a dashed line, and in Fig. 2(a) and Fig. 3(b), the interior of the spring accommodating section 15 is indicated by a dashed line. Also, Fig. 1(c) and Fig. 1(d) omit the illustration of the hooking aid 12 and the connecting member 13, and Fig. 2(b) shows a state in which a part of the connecting member 13 and the hooking aid 12 are cut in a plane that passes through the central axis 13a (see Fig. 3(a)) and is perpendicular to the mounting plate 4. Furthermore, the components that have already been explained using Fig. 7 are given the same reference numerals, and their explanation will be omitted.

[0025] As shown in Figures 1(a) to 1(d), the attachment temporary support cleat 1a of the present invention is used when connecting an attachment 52 (see Figure 7) to a high-voltage cutout supported by an arm 51 of a utility pole using a common operating rod, and has a structure in which the temporary support means 2 to which the attachment 52 is attached and the hanging means 3 for hanging it on the arm 51 of the utility pole are integrally formed from an aluminum alloy or the like. The temporary support means 2 is composed of an insulating synthetic resin mounting plate 4, a metal or synthetic resin mounting member 5 formed in a roughly U-shape and installed on the upper part of the front surface 4a of the mounting plate 4, an elastic and insulating temporary support member 6 formed in a band shape from rubber or the like, and a synthetic resin retaining member 7 having a recess 7a for fitting the middle part of the attachment 52 and fixed to the front surface 4a of the mounting plate 4 below the mounting member 5 using screws or the like.

[0026] The temporary support member 6 is connected to the mounting member 5 by fitting a pair of elongated holes 6a, 6a formed on both sides onto a pair of support pins 8, 8 provided at both ends of the U-shape of the mounting member 5. When the attachment 52 is not attached, the temporary support member 6 protrudes inward in a position in front of the mounting member 5 as shown in FIG. 1(c), but when the attachment 52 is pressed against the front surface 6b, the temporary support member 6 elastically deforms so as to be further curved inward. The hooking means 3 is installed on the back surface 4b of the mounting plate 4, and includes a hooking member 9 in the shape of a rectangular frame installed above the arm 51, a seat plate 10 connected to the hooking member 9, a connecting member 11 fixed to the mounting plate 4 and connecting the hooking member 9 to the seat plate 10, a hooking aid 12 which is rectangular in plan view and installed below the hooking member 9 across the arm 51 so as to be approximately parallel to the hooking member 9, a connecting member 13 which has one end connected to the hooking aid 12 and is held by the seat plate 10 so as to be movable in a direction parallel to the central axis 13a (see Figure 3(a)), and whose other end is detachably connected to the tip of a common operating rod (not shown), and a box-shaped spring accommodating section 15 provided on the underside 10a of the seat plate 10.

[0027] The tip 9a of the hanging member 9 and the tip 12a of the hanging aid 12 are provided with a stepped first hanging portion 9b and a stepped second hanging portion 12b that protrude downward and upward, respectively, and can be hooked onto the corners of the arm 51. That is, when the hanging member 9 and the hanging aid 12 are installed above and below the arm 51, the first hanging portion 9b and the second hanging portion 12b hook onto the corners of the arm 51, so that the hanging member 9 and the hanging aid 12 are unlikely to shift horizontally relative to the arm 51 and in a direction perpendicular to the longitudinal direction of the arm 51. Therefore, with the attachment temporary support cleat 1a, there is no risk that the temporary support means 2 attached to the arm 51 will inadvertently come off the arm 51. Therefore, the attachment temporary support cleat 1a is excellent in safety during use.

[0028] As shown in Figure 1(b), the connecting member 13 is composed of a connecting fitting 16 into which the tip of a common operating rod (not shown) is inserted, and a shaft 17 made of a round bar that extends vertically from the upper end 16a of the connecting fitting 16 and has a first rod-shaped protrusion 17c and a second rod-shaped protrusion 17d that can be engaged with the seat plate 10 on the side surface 17a and flange 17b, respectively, protruding in the radial direction of the circle. As shown in Figures 1(c) and 1(d), the seat plate 10 and the bottom plate 18 of the spring accommodating section 15 are provided with through holes 10b and 18b, respectively, to allow communication with the shaft body 17, and a first locking device 19 and a second locking device 20 are provided on the underside 18a of the bottom plate 18 and the underside 10a of the seat plate 10, respectively.

[0029] The through hole 18b has an inner diameter larger than the outer diameter of the shaft body 17 and smaller than the outer diameter of the flange 17b. On the other hand, the through hole 10b is composed of a circular insertion portion 21a whose inner diameter is larger than the outer diameter of the flange 17b of the shaft body 17 and smaller than the sum of the outer diameter and the length of the second protrusion portion 17d, and a guide portion 21b formed to protrude outward from the inner surface of this insertion portion 21a in parallel to the radial direction of the circle and whose width is larger than that of the second protrusion portion 17d. That is, through hole 10b is configured so that second protrusion 17d can be loosely inserted into guide portion 21b with flange 17b of shaft 17 loosely inserted into insertion portion 21a. Second locking device 20, which is a plate-like member erected on underside 10a of seat plate 10 and has an L-shape in a side view, has the function of restricting rotation about central axis 13d in one direction and restricting movement in a direction parallel to central axis 13d for shaft 17 inserted into insertion portion 21a of through hole 10b by engaging with second protrusion 17d. In addition, the first locking device 19, which is erected on the underside 18a of the bottom plate 18 of the spring accommodating section 15 and is L-shaped in side view, has the function of locking onto the first protrusion 17c, thereby restricting the rotation of the shaft body 17 inserted into the through hole 18b around the central axis 13d in one direction and restricting movement in a direction parallel to the central axis 13d.

[0030] In the attachment temporary support cleat 1a of the above structure, by operating a common operating rod (not shown) whose tip is connected to the connecting fitting 16, the shaft 17, which is inserted through the through hole 10b of the seat plate 10 and the through hole 18b of the bottom plate 18 of the spring accommodating section 15, is rotated around the central axis 13a to engage the first protrusion 17c with the first locking device 19 as shown in Figure 2(a), the shaft 17 becomes unable to move in a direction parallel to the central axis 13a, and as a result, the hanging aid 12 also becomes unable to move in the vertical direction. That is, the through hole 10b and the first protrusion 17c of the seat plate 10 function as a positioning means for fixing the shaft body 17 to the seat plate 10. Therefore, when the common operating rod is operated to position the hooking member 9 above the arm 51, and the common operating rod is used to push up the shaft body 17 so that the hooking auxiliary tool 12 abuts against the arm 51, and then the shaft body 17 is fixed to the seat plate 10 by the positioning means, the arm 51 is sandwiched between the hooking member 9 and the hooking auxiliary tool 12, and the state in which the temporary support means 2 is fixed to the arm 51 is maintained.

[0031] In this way, unlike the conventional structure in which a screw rod must be rotated to hook the attachment temporary support cleat 1a onto the arm 51, the arm 51 is clamped between the hooking member 9 and the hooking aid 12 simply by pushing up the hooking aid 12 with the common operating rod, making it possible to attach the temporary support means 2 to the arm 51 efficiently in a short amount of time. By fixing the shaft 17 to the seat plate 10 by the positioning means, the hanging auxiliary tool 12 is fixed in a position where the arm 51 is clamped by the hanging member 9 and the hanging auxiliary tool 12 as shown in Figure 1(b), and the state in which the arm 51 is clamped by the hanging member 9 and the hanging auxiliary tool 12 is maintained, so there is no risk of the temporary support means 2 accidentally coming off the arm 51 during the work of connecting the attachment 52 to the high-voltage cutout. Therefore, the attachment temporary support cleat 1a is excellent in safety when used.

[0032] 2(b), the hooking aid 12 is provided with a stepped through-hole 12c consisting of a large diameter portion 22a and a small diameter portion 22b, and a cylindrical collar 23 is loosely inserted into the small diameter portion 22b with its upper end slightly protruding. The hooking aid 12 is fixed to the shaft 17 of the connecting member 13 via the collar 23 by a bolt 24 whose head 24a is located in the large diameter portion 22a of the through-hole 12c. That is, the latching aid 12 is not in direct contact with the head 24a of the bolt 24, and is connected to the shaft 17 in a state in which it can rotate about the central axis 13a. Furthermore, the base end 12d of the latching aid 12 abuts against the connecting member 11. Therefore, even when the shaft 17 is rotated about the central axis 13a, the latching aid 12 does not rotate with it.

[0033] With the attachment temporary support cleat 1a in the state shown in FIG. 1(b), the common operating rod is operated to release the locked state between the first protrusion 17c and the first locking device 19, and then the hooking aid 12 is moved downward together with the shaft 17 as shown in FIG. 3(a) to separate the hooking aid 12 from the arm 51, thereby removing the hooking member 9 and the hooking aid 12 from the arm 51. That is, with the attachment temporary support cleat 1a, simply moving the hooking aid 12 downward with the common operating rod enables the hooking member 9 and the hooking aid 12 to be removed from the arm 51, so the work of removing the temporary support means 2 from the arm 51 can be performed efficiently in a short time. Then, when the second protrusion 17d is engaged with the second locking device 20 as shown in FIG. 3(b), the hooking aid 12 is fixed to the base plate 10 in a position where the hooking member 9 and the hooking aid 12 can be removed from the arm 51. In other words, the attachment temporary support cleat 1a is easy to handle because the hooking aid 12 can be fixed so that it cannot move up and down, or this fixed state can be released, by simply rotating the connecting member 13 using the common operating rod. [Example]

[0034] Figures 4(a) and 4(b) are respectively a front view and a side view of an attachment temporary support cleat 1b according to an embodiment of the present invention. Also, Figures 5(a) and 5(b) are respectively a front view and a cross-sectional view of the connecting member 13 shown in Figure 4(a), Figure 5(c) is a cross-sectional view taken along line AA in Figure 5(a), and Figure 5(d) is an enlarged view of the portion enclosed by the dashed line in Figure 4(b). Furthermore, Figure 6(a) is a view showing the state in which the hooking aid 12 in Figure 4(b) has been moved downward, and Figure 6(b) is an enlarged view of the portion enclosed by the dashed line in Figure 6(a). 4(a) and 4(b), the arm 51 is indicated by a broken line, and in FIGS. 5(d) and 6(b), the interior of the spring accommodating portion 15 is indicated by a broken line. Also, FIG. 5(b) shows a state in which the connecting member 13 is cut by a plane that passes through the central axis 13a and is perpendicular to the mounting plate 4. Furthermore, the components that have already been explained using FIGS. 1 to 3 and 7 are denoted by the same reference numerals, and explanations thereof will be omitted.

[0035] As shown in Figures 4(a) and 4(b) and Figures 5(a) to 5(c), the attachment temporary support cleat 1b is characterized in that, in the attachment temporary support cleat 1a, it is provided with a compression spring 14 that is installed between the bottom plate 18 of the spring accommodating section 15 provided in the seat plate 10 and the hanging aid 12, and that urges the hanging aid 12 toward the hanging member 9. The shaft 17 has a flange 17b with a second protrusion 17d at one end and a rectangular plate-shaped locking portion 25a at the other end, and is configured as a connecting portion 25 that is connected to the hanging aid 12, and a cylindrical body 26 with a rectangular inner wall cross section and an insertion hole 27 that engages with the locking portion 25a to prevent the connecting portion 25 from rotating around the central axis 13a while holding the connecting portion 25 movably in a direction parallel to the central axis 13a, and with the first protrusion 17c provided on a side surface 26b near the upper end 26a, and the upper end 26a of the cylindrical body 26 is provided with a fall-out prevention portion 26c that can be engaged with the locking portion 25a to prevent the connecting portion 25 from slipping out of the insertion hole 27.

[0036] In the attachment temporary support cleat 1b having the above structure, when the common operating rod is operated to rotate the cylindrical body 26 about the central axis 13a, the connecting portion 25 inserted through the insertion hole 27 of the cylindrical body 26 rotates integrally with the cylindrical body 26. Then, when the connecting portion 25 inserted through the through hole 10b of the seat plate 10 and the through hole 18b of the bottom plate 18 of the spring accommodating portion 15 is rotated about the central axis 13a so that the second protrusion 17d is positioned within the guide portion 21b of the through hole 10b, the connecting portion 25 becomes movable in a direction parallel to the central axis 13a. As a result, the connecting portion 25 moves upward due to the biasing force of the compression spring 14, and the hooking aid 12 pushed up by the connecting portion 25 comes into contact with the arm 51 as shown in FIG. 4(b). At this time, when the cylindrical body 26 is rotated to engage the first protrusion 17c with the first locking device 19, the cylindrical body 26 is fixed to the seat plate 10 via the bottom plate 18 of the spring accommodating section 15, so that even if the common operating rod is removed from the connecting member 13, the arm 51 remains clamped between the locking member 9 and the locking auxiliary device 12.

[0037] In other words, with attachment temporary support cleat 1b, there is no need to use a common operating rod to push up shaft 17 as with attachment temporary support cleat 1a; simply by rotating shaft 17 to release the engagement of second protrusion 17d with seat plate 10, the hanging aid 12 pushed up by compression spring 14 comes into contact with arm 51, so that arm 51 is clamped between hanging member 9 and hanging aid 12, and the work of attaching temporary support means 2 to arm 51 can be completed efficiently in a short amount of time.

[0038] Furthermore, in the attachment temporary support cleat 1b, the retaining portion 26c of the tubular body 26 is locked with the locking portion 25a of the connecting portion 25, preventing the connecting portion 25 from slipping out of the insertion hole 27 of the tubular body 26. Therefore, in the state shown in FIG. 4(b), when the first projection 17c and the first locking device 19 are disengaged and the tubular body 26 of the connecting member 13 is moved downward, the connecting portion 25 also moves downward as if pulled by the tubular body 26. The hooking aid 12 connected to the connecting portion 25 also moves downward together with the connecting portion 25, and the hooking aid 12 abutting against the arm 51 moves away from the arm 51, allowing the attachment temporary support cleat 1b to be easily removed from the arm 51. In this way, the attachment temporary support cleat 1b can be attached to and removed from the arm 51 efficiently in a short amount of time. As shown in Figure 6(a), after the flange 17b is pulled into the spring accommodating section 15 through the through hole 10b provided in the seat plate 10, the connecting section 25 is rotated to engage the second protrusion section 17d with the second locking device 20, and as shown in Figure 6(b), the connecting section 25 is fixed to the seat plate 10 with the compression spring 14 completely accommodated in the spring accommodating section 15, which has the advantage that the compression spring 14 does not get in the way when storing or carrying the product. [Industrial Applicability]

[0039] The attachment temporary support cleat of the present invention can be used when connecting an attachment to a high-voltage cutout using a common operating rod for the purpose of detecting a ground fault point on an overhead distribution line. [Explanation of symbols]

[0040] DESCRIPTION OF SYMBOLS 1a, 1b... Attachment temporary support cleat 2... Temporary support means 3... Hooking means 4... Mounting plate 4a... Front surface 4b... Rear surface 5... Mounting member 6... Temporary support member 6a... Elongated hole 6b... Front surface 7... Holding member 7a... Recess 8... Support pin 9... Hooking member 9a... Tip 9b... First hooking portion 10... Seat plate 10a... Lower surface 10b... Through hole 11... Connecting member 12... Hooking aid 12a... Tip 12b... Second hooking portion 12c... Through hole 12d... Base end 13... Connecting member 13a... Central shaft 14... Compression spring 15... Spring accommodating portion 16... Connecting fitting 16a... Upper end 17... Shaft body 17a... Side surface 17b... Flange 17c... First protrusion 17d... Second protrusion 18...Bottom plate 18a...Lower surface 18b...Through hole 19...First locking device 20...Second locking device 21a...Insertion portion 21b...Guide portion 22a...Large diameter portion 22b...Small diameter portion 23...Collar 24...Bolt 24a...Head portion 25...Connecting portion 25a...Lock portion 26...Cylindrical body 26a...Upper end 26b...Side surface 26c...Prevention portion 27...Insertion hole 50...Attachment temporary support cleat 51...Arm 52...Attachment

Claims

1. An attachment temporary support cleat has a hooking means for hooking onto an arm of a utility pole and a temporary support means to which an attachment is attached, and is used when connecting the attachment to a high-voltage cutout supported by the arm using a common operating rod, The latching means is a hook member installed above the bracket; a hooking aid that is installed below the hooking member and sandwiches the bracket; a shaft body having an upper end connected to the latching aid and a lower end connected to the common operating rod; a seat plate connected to the hook member and holding the shaft body so that the shaft body can move in a direction parallel to the central axis; and a positioning means for fixing the shaft body to the seat plate.

2. The upper end of the shaft body is connected to the latching aid so as to be rotatable about the central axis, the positioning means comprises rod-shaped first and second protrusions provided on a side surface of the shaft body so as to protrude in a radial direction of a circle and capable of being engaged with the seat plate, and a through hole provided in the seat plate; the through hole comprises a circular insertion portion having an inner diameter larger than an outer diameter of the shaft body and smaller than the sum of the outer diameter and the length of the second protrusion, and a guide portion into which the second protrusion can be loosely inserted when the shaft body is loosely inserted into the insertion portion, When the first protrusion is engaged with the seat plate, the latching aid is fixed to the seat plate at a position where the arm is clamped by the latching member and the latching aid, An attachment temporary support cleat as described in claim 1, characterized in that when the second protrusion portion engages with the seat plate, the hanging aid is fixed in a position relative to the seat plate that allows the hanging member and the hanging aid to be removed from the arm.

3. a compression spring disposed between the seat plate and the hooking aid to bias the hooking aid toward the hooking member; The shaft body is a connecting portion having the second protrusion, connected to the hooking aid, and provided with a locking portion; a cylindrical body having the first protrusion and an insertion hole that is engaged with the engaging portion to prevent the connecting portion from rotating about the central axis and to hold the connecting portion movably in a direction parallel to the central axis, 3. The attachment temporary support cleat according to claim 2, wherein the cylindrical body is provided with a retaining portion that engages with the engaging portion to prevent the connecting portion from slipping out of the insertion hole.

4. 4. An attachment temporary support cleat as described in any one of claims 1 to 3, characterized in that the hooking member is provided with a stepped first hooking portion that protrudes downward and can be hooked onto a corner of the bracket.

5. 5. An attachment temporary support cleat as described in claim 4, characterized in that the hooking aid has a stepped second hooking portion that can be hooked onto the corner of the arm and that protrudes upward at a position opposite the first hooking portion.

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