JP2014050237A - Split pin attaching/detaching jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely pull out and push in a split pin with respect to a cap metal fitting, without bringing a part of a jig into contact with a shade of an insulator body, when attaching/detaching the split pin.SOLUTION: In the state where a plurality of insulators 1 are arrayed in each of which a cap metal fitting 3 is fixed to one side of an insulator body 2 and a pin metal fitting 4 is fixed to another side of the insulator body 2, a split pin attaching/detaching jig attaches/detaches a split pin 12 for connecting the cap metal fitting 3 in one insulator 1 of neighboring two insulators 1 and the pin metal fitting 4 in another insulator 1. The split pin attaching/detaching jig comprises: a hook-shaped hooking part 33 which is provided in one end of a stick-like jig body 32 and hooked on an annular head part 13 of the split pin 12; a recessed cup part 34 which is provided in another end of the jig body 32 and covers the annular head part 13 of the split pin 12; and an annular slit part 35 which is provided between the hooking part 33 and the cup part 34 in the jig body 32 and in which beating power is applied in an attaching/detaching direction of the split pin 12 along the jig body 32.

Description

  The present invention relates to a split pin attaching / detaching jig that makes it possible to separate a lever by pulling out a split pin for connecting a plurality of levers from the lever and to connect the lever by pushing the split pin into the lever.

  For example, as shown in FIG. 10, the ball socket type hanging insulator 1 includes a porcelain shade-shaped insulator body 2, a metal cap fitting 3 fixed to the upper portion of the insulator body 2, and a lower portion of the insulator body 2. It consists of a metal pin fitting 4 fixed to (see, for example, Patent Document 1). In this state, a plurality of hanging insulators 1 are arranged in the vertical direction, and a pin fitting 4 fixed to the insulator main body 2 located on the upper side and a cap fitting 3 fixed to the insulator main body 2 located on the lower side. Is used to insulate and support the transmission line.

  An insulator body 2 of the hanging insulator 1 is composed of a head portion 5 and a cap portion 6. A cap metal fitting 3 is fitted on the outer periphery of the head portion 5 and bonded with a cement material 7. A pin fitting 4 is inserted and bonded with a cement material 8. The cap metal fitting 3 has a bell shape, and a concave portion 9 into which the pin metal fitting 4 is inserted and disposed is formed on the cap metal fitting 3. The recess 9 opens upward so that the pin metal fitting 4 can be inserted, and opens sideways so that the pin metal fitting 4 can be taken in and out (see FIGS. 11 and 12). A collar portion 10 is formed at the lower portion of the cap fitting 3. The pin fitting 4 has a rod shape, and a large diameter portion 11 is formed at the lower end thereof.

  As shown in FIGS. 11 and 12, the connecting structure of the hanging insulator 1 is such that the large-diameter portion 11 of the pin metal fitting 4 is disposed in the recess 9 of the cap metal fitting 3, and the large-diameter portion 11 of the pin metal fitting 4 and the cap metal fitting 4 are A split pin 12 is interposed between the bottom surface of the recess 9. Thereby, the pin metal fitting 4 is fixed to the cap metal fitting 3 by pressing the large diameter portion 11 of the pin metal fitting 4 against the peripheral edge of the upper opening of the recess 9 which is narrower than the large diameter portion 11. Yes. The split pin 12 for fixing the cap metal fitting 3 and the pin metal fitting 4 in a connected state includes an annular head portion 13 and two leg portions 14 extending from the head portion 13, and the tips of both leg portions 14 are expanded. Shape. The split pin 12 is formed in a side portion of the cap fitting 3 and is inserted into a hole 15 communicating with the recess 9, and the head 13 is disposed in a state where it is exposed to the outside of the cap fitting 3.

  As described above, the large-diameter portion 11 of the pin fitting 4 disposed in the concave portion 9 of the cap fitting 3 is pressed against the upper opening periphery of the cap fitting 3 by the leg portion 14 of the split pin 12, thereby Although the metal fitting 4 is connected, it is necessary to release the connection state between the cap metal fitting 3 and the pin metal fitting 4 when the hanging insulator 1 is replaced. When releasing the connected state, as shown in FIGS. 13 and 14, the leg portion 14 of the split pin 12 is made larger than the pin bracket 4 by pulling out the head portion 13 of the split pin 12 from the cap bracket 3. It is no longer interposed between the diameter portion 11 and the bottom surface of the concave portion 9 of the cap fitting 3. As a result, the state in which the large-diameter portion 11 of the pin metal fitting 4 is pressed against the upper opening periphery of the cap metal fitting 3 is released, and the large-diameter portion 11 of the pin metal fitting 4 is removed from the side of the concave portion 9 of the cap metal fitting 3. It becomes possible. Note that when the split pin 12 is pulled out, the tip of the leg portion 14 is expanded, so that the split pin 12 does not completely come out of the hole 15 of the cap fitting 3. When the cap metal fitting 3 and the pin metal fitting 4 are connected, the head 13 of the split pin 12 is pushed into the cap metal fitting 3 while the pin metal fitting 4 is inserted into the recess 9 of the cap metal fitting 3 from the side. The leg portion 14 of the split pin 12 may be interposed between the large diameter portion 11 of the pin fitting 4 and the bottom surface of the recess 9 of the cap fitting 3.

  In this way, the suspension lever 1 can be separated by pulling out the head portion 13 of the split pin 12 from the cap fitting 3 of the hanging lever 1 and the head portion 13 of the dividing pin 12 is pushed into the cap fitting 3 of the hanging lever 1. Conventionally, a dedicated jig has been used as means for enabling the suspension insulator 1 to be connected. As shown in FIG. 15, the conventional jig 21 includes a strip-shaped gripping portion 22, a crescent-shaped drawer portion 23 integrally formed at the distal end of the gripping portion 22, and a proximal end of the gripping portion 22. And a push-in portion 24 formed integrally therewith. The lead-out portion 23 includes a point-like locking portion 25 having one end bent slightly outward, and a concave support portion 26 having the other end matched with the shape of the flange portion 10 of the cap fitting 3. ing. On the other hand, the pushing portion 24 has a concave shape that matches the outer shape of the head 13 of the split pin 12.

  The attaching / detaching operation of the split pin 12 using the jig 21 is based on the following procedure. First, when pulling out the split pin 12 from the cap fitting 3, as shown in FIG. 16, the support portion 26 of the jig 21 is brought into contact with the flange portion 10 of the cap fitting 3 and the locking portion 25 is moved to the cap fitting. Hook the head 13 of the split pin 12 exposed from the third hole 15. The operator holds the grip portion 22 of the jig 21 and rotates the locking portion 25 outward about the support portion 26 by using the lever principle. Accordingly, as shown in FIG. 17, the head portion 13 of the split pin 12 is pulled out from the hole 15 of the cap fitting 3, and is interposed between the large diameter portion 11 of the pin fitting 4 and the bottom surface of the recess 9 of the cap fitting 3. By removing the leg portion 14 of the split pin 12, the state in which the large-diameter portion 11 of the pin fitting 4 is pressed against the upper opening periphery of the cap fitting 3 is released, and the large-diameter portion 11 of the pin fitting 4 is released. The cap metal fitting 3 can be removed from the side of the recess 9. As a result, the coupling state of the cap metal fitting 3 and the pin metal fitting 4 is released, and the hanging insulator 1 can be separated.

  On the other hand, when the split pin 12 is pushed into the cap fitting 3, the pin fitting 4 is inserted and disposed in advance from the side of the concave portion 9 of the cap fitting 3. Then, as shown in FIG. 18, the operator holds the jig 21 in a state where the pushing portion 24 of the jig 21 is in contact with the head 13 of the split pin 12 drawn out from the hole 15 of the cap fitting 3. Holding the portion 22, a striking force is applied to the drawer portion 23 using a tool 27 such as a monkey. By applying the striking force, the head 13 of the split pin 12 is pushed into the hole 15 of the cap fitting 3 by the pushing portion 24, so that the large-diameter portion 11 of the pin fitting 4 and the cap fitting 3 are formed as shown in FIG. The leg portion 14 of the split pin 12 enters between the bottom surface of the recess 9. As a result, the large-diameter portion 11 of the pin fitting 4 disposed in the recess 9 of the cap fitting 3 is pressed against the upper opening periphery of the cap fitting 3 by the leg portion 14 of the split pin 12, thereby pinning the cap fitting 3. The metal fitting 4 is fixed and the suspension insulator 1 can be connected.

JP-A-5-282294

  By the way, when the connecting state between the cap metal fitting 3 and the pin metal fitting 4 is released in the attaching / detaching operation of the split pin 12 using the conventional jig 21, as described above, the support portion 26 of the jig 21 is attached to the cap metal fitting. 3 is brought into contact with the flange portion 10 and the locking portion 25 is hooked on the head portion 13 of the split pin 12 exposed from the hole 15 of the cap fitting 3. The operator holds the gripping portion 22 of the jig 21 and uses the lever principle to rotate the locking portion 25 around the support portion 26 so that the head 13 of the split pin 12 is moved. It pulls out from the hole 15 of the cap metal fitting 3.

  However, during the above-described operation, a part of the jig 21 may come into contact with the shade portion 6 of the insulator body 2 and the shade portion 6 may be damaged. For example, when the drawer portion 23 of the jig 21 is rotated, the locking portion 25 comes off from the head portion 13 of the split pin 12 and comes into contact with the shade portion 6 of the insulator body 2 located in the vicinity thereof. There is a risk of damage. Further, for the suspended insulator 1 of a size different from the suspended insulator 1 having a size suitable for the jig 21, the support portion 26 of the jig 21 cannot be aligned with the flange portion 10 of the cap fitting 3, and the locking portion It becomes difficult to pull out the head portion 13 of the split pin 12 by rotating 25 to the outside.

  On the other hand, when the cap metal fitting 3 and the pin metal fitting 4 are connected, the pushing portion 24 of the jig 21 is brought into contact with the head 13 of the split pin 12 drawn out from the hole 15 of the cap metal fitting 3 as described above. In this state, the operator holds the grip portion 22 of the jig 21 and applies a striking force to the drawer portion 23 using a tool 27 such as a monkey, so that the head portion 13 of the split pin 12 is capped with the pushing portion 24. It pushes into the hole 15 of the metal fitting 3.

  However, since the pushing portion 24 for pushing the head portion 13 of the split pin 12 into the hole 15 of the cap metal fitting 3 is provided at the tip of the strip-shaped gripping portion 22, the striking force to the drawing portion 23 of the jig 21 is reduced. The pushing portion 24 often comes off the head 13 of the split pin 12 due to an impact at the time of application. In that case, a part of the jig 21 may come into contact with the shade portion 6 of the insulator body 2 located in the vicinity thereof, and the shade portion 6 may be damaged.

  Therefore, the present invention has been proposed in view of the above-mentioned problems, and the object of the present invention is to cap the part of the jig without contacting the shade of the insulator body when attaching / detaching the split pin. An object of the present invention is to provide a split pin attaching / detaching jig capable of easily and reliably pulling and pushing a split pin into a metal fitting.

  As technical means for achieving the above-mentioned object, the present invention has a plurality of insulators in which a cap metal fitting is fixed on one side of the insulator main body and a pin metal fixture is fixed on the other side of the insulator main body. A split pin attaching / detaching jig that attaches / detaches a split pin that connects a cap metal fitting in one insulator and a pin metal fitting in the other insulator among two adjacent insulators in the state, and is attached to one end of the rod-shaped jig main body. A hook-shaped hook portion that is hooked on the annular head of the split pin, a recessed cup portion that is provided on the other end of the jig body and covers the annular head of the split pin, and a hook portion of the jig body A striking portion is provided between the cup portion and a striking portion to which a striking force is applied in the attaching / detaching direction of the split pin along the jig body.

  In the split pin attaching / detaching jig according to the present invention, the hook-shaped hook portion is hooked on the annular head portion of the split pin when releasing the connection state between the cap metal fitting and the pin metal fitting. In this state, the striking portion applies a striking force in the direction of pulling out the split pin along the jig body, and pulls out the annular head of the split pin hooked on the hook-shaped hook portion. As described above, in the present invention, in addition to hooking the hook-shaped hook portion to the annular head of the split pin, other parts of the jig main body are brought into a non-contact state with the lever main body, whereby the lever is brought into contact with the lever main body. The main body can be prevented from being damaged, and can be easily applied to insulators of different sizes. Moreover, by making the part hooked to the annular head of the split pin into a hook-shaped hook part, it is possible to avoid the hook-shaped hook part from coming off from the annular head of the split pin when the split pin is pulled out, and by contact with the insulator main body. Damage to the insulator body can be reliably prevented.

  Moreover, when connecting a cap metal fitting and a pin metal fitting, a recessed cup part is covered on the annular head part of a split pin. In this state, a striking force is applied by the striking portion along the jig main body in the pushing direction of the split pin, and the annular head portion of the split pin placed on the concave cup portion is pushed. As described above, in the present invention, the portion that covers the annular head of the split pin is the concave cup portion, so that the concave cup portion can be prevented from coming off from the annular head of the split pin when the split pin is pushed. The insulator body can be reliably prevented from being damaged by contact with the insulator body.

  The striking portion in the present invention is composed of an annular slit portion extending along the jig body, and the tool can be moved along the slit portion in a state where a tool for applying striking force is inserted into the slit portion. A structure in which a striking force can be applied by bringing a tool into contact with the end of the slit is desirable. If such a structure is adopted, when attaching / detaching the split pin, the tool inserted into the slit portion is moved along the jig body, and the tool is brought into contact with the end portion of the slit portion, thereby The striking force can be easily and reliably applied in the pulling-out direction or the pushing-in direction, and workability can be improved.

  In the present invention, a bending portion is provided between the cup portion and the hitting portion of the jig body, and a structure in which a distal end portion from the bending portion to the cup portion and a proximal end portion from the bending portion to the hitting portion are arranged in parallel is provided. desirable. If such a structure is adopted, when the split pin is pushed into the cap metal fitting, the bent portion functions as a relief, and the gap between the jig main body and the insulator main body is increased, thereby making contact with the insulator main body. It is possible to prevent the insulator body from being damaged more reliably. Further, by arranging the distal end portion from the bent portion to the cup portion and the base end portion from the bent portion to the hitting portion in parallel, the hitting force can be easily and reliably applied in the pushing direction of the split pin.

  According to the present invention, at the time of pulling out the split pin, in addition to hooking the hook-shaped hook portion on the annular head of the split pin, other parts of the jig main body are brought into a non-contact state with the lever main body. It is possible to prevent the insulator body from being damaged due to contact with the insulator, and it is easy to apply to insulators of different sizes. Moreover, by making the part hooked to the annular head of the split pin into a hook-shaped hook part, it is possible to avoid the hook-shaped hook part from coming off from the annular head of the split pin when the split pin is pulled out, and by contact with the insulator main body. Damage to the insulator body can be reliably prevented. In addition, when the cotter pin is pushed in, the portion that covers the annular head of the cotter pin is made into a recessed cup part, so that the recessed cup part can be prevented from coming off from the annular head of the cotter pin when the cotter pin is pushed in. The insulator body can be reliably prevented from being damaged by contact with the insulator body. As a result, the split pin can be pulled out and pushed in easily and reliably, and a split pin attaching / detaching jig excellent in workability can be provided.

It is a front view which shows embodiment of the split pin attachment / detachment jig which concerns on this invention. It is a front view which shows the state before pulling out a split pin with this invention jig | tool. FIG. 3 is a left side view of FIG. 2. It is a front view which shows the state after pulling out a split pin with this invention jig | tool. FIG. 5 is a left side view of FIG. 4. It is a front view which shows the state before pushing in a split pin with this invention jig | tool. FIG. 7 is a left side view of FIG. 6. It is a front view which shows the state after pushing in the split pin with this invention jig | tool. FIG. 9 is a left side view of FIG. 8. It is a front view containing the partial cross section which shows an example of a ball socket type hanging insulator. It is a principal part expanded sectional view which shows the connection state of a suspension insulator. It is a top view of FIG. It is a principal part expanded sectional view which shows the state which cancel | released the connection of the suspension insulator. FIG. 14 is a plan view of FIG. 13. It is a front view which shows the prior art example of a split pin attaching / detaching jig. It is a front view which shows the state before pulling out a split pin with the conventional jig | tool. It is a front view which shows the state after pulling out the split pin with the conventional jig | tool. It is a front view which shows the state before pushing in a split pin with a conventional jig | tool. It is a front view which shows the state after pushing in the split pin with the conventional jig | tool.

  Embodiments of the split pin attaching / detaching jig according to the present invention will be described in detail below with reference to FIGS. In the following embodiment, a ball socket type hanging insulator is illustrated as an object using a jig. The present invention is not limited to the ball socket type hanging insulator, but can be separated by pulling out the split pin from the insulator, and can be applied to a plurality of insulators that can be connected by pushing the split pin into the insulator.

  As shown in FIG. 10, a ball socket type hanging insulator 1 that is an object of the present invention includes a porcelain hat-shaped insulator body 2, a metal cap fitting 3 fixed to the top of the insulator body 2, and an insulator. It is comprised with the metal pin metal fittings 4 fixed to the lower part of the main body 2. FIG. In this state, a plurality of hanging insulators 1 are arranged in the vertical direction, and a pin fitting 4 fixed to the insulator main body 2 located on the upper side and a cap fitting 3 fixed to the insulator main body 2 located on the lower side. And the transmission line is insulated and supported.

  An insulator body 2 of the hanging insulator 1 is composed of a head portion 5 and a cap portion 6. A cap metal fitting 3 is fitted on the outer periphery of the head portion 5 and bonded with a cement material 7. A pin fitting 4 is inserted and bonded with a cement material 8. The cap metal fitting 3 has a bell shape, and a concave portion 9 into which the pin metal fitting 4 is inserted and disposed is formed on the cap metal fitting 3. The recess 9 opens upward so that the pin metal fitting 4 can be inserted, and opens sideways so that the pin metal fitting 4 can be taken in and out (see FIGS. 11 and 12). A collar portion 10 is formed at the lower portion of the cap fitting 3. The pin fitting 4 has a rod shape, and a large diameter portion 11 is formed at the lower end thereof.

  As shown in FIGS. 11 and 12, the connecting structure of the hanging insulator 1 is such that the large-diameter portion 11 of the pin metal fitting 4 is disposed in the recess 9 of the cap metal fitting 3, and the large-diameter portion 11 of the pin metal fitting 4 and the cap metal fitting 4 are A split pin 12 is interposed between the bottom surface of the recess 9. Thereby, the pin metal fitting 4 is fixed to the cap metal fitting 3 by pressing the large diameter portion 11 of the pin metal fitting 4 against the peripheral edge of the upper opening of the recess 9 which is narrower than the large diameter portion 11. Yes. The split pin 12 for fixing the cap metal fitting 3 and the pin metal fitting 4 in a connected state includes an annular head portion 13 and two leg portions 14 extending from the head portion 13, and the tips of both leg portions 14 are expanded. Shape. The split pin 12 is formed in a side portion of the cap fitting 3 and is inserted into a hole 15 communicating with the recess 9, and the head 13 is disposed in a state where it is exposed to the outside of the cap fitting 3.

  As described above, the large-diameter portion 11 of the pin fitting 4 disposed in the concave portion 9 of the cap fitting 3 is pressed against the upper opening periphery of the cap fitting 3 by the leg portion 14 of the split pin 12, thereby Although the metal fitting 4 is connected, the connection state of the cap metal fitting 3 and the pin metal fitting 4 is released when the hanging insulator 1 is replaced. When releasing the connected state, as shown in FIGS. 13 and 14, the leg portion 14 of the split pin 12 is made larger than the pin bracket 4 by pulling out the head portion 13 of the split pin 12 from the cap bracket 3. It is no longer interposed between the diameter portion 11 and the bottom surface of the concave portion 9 of the cap fitting 3. As a result, the state in which the large-diameter portion 11 of the pin metal fitting 4 is pressed against the upper opening periphery of the cap metal fitting 3 is released, and the large-diameter portion 11 of the pin metal fitting 4 is removed from the side of the concave portion 9 of the cap metal fitting 3. It becomes possible. Note that when the split pin 12 is pulled out, the tip of the leg portion 14 is expanded, so that the split pin 12 does not completely come out of the hole 15 of the cap fitting 3. When connecting the cap metal fitting 3 and the pin metal fitting 4, the head metal 13 of the split pin 12 is pushed into the cap metal fitting 3 while the pin metal fitting 4 is inserted into the recess 9 from the side thereof. The leg portion 14 of the split pin 12 may be interposed between the large diameter portion 11 of the pin fitting 4 and the bottom surface of the recess 9 of the cap fitting 3.

  In this way, the suspension lever 1 can be separated by pulling out the head portion 13 of the split pin 12 from the cap fitting 3 of the hanging lever 1 and the head portion 13 of the dividing pin 12 is pushed into the cap fitting 3 of the hanging lever 1. Thus, as means for enabling the suspension insulator 1 to be connected, a split pin attaching / detaching jig (hereinafter simply referred to as a jig) having the following structure is used. As shown in FIG. 1, the jig 31 in this embodiment is provided integrally with one end of a round bar-shaped metal jig body 32, and has a hook-shaped hook portion 33 that is hooked on the head 13 of the split pin 12. The concave cup portion 34 that is provided integrally with the other end of the jig body 32 and covers the head 13 of the split pin 12, and the central portion between the hook portion 33 and the cup portion 34 of the jig body 32. And an annular slit portion 35 that is a striking portion to which a striking force is applied along the jig main body 32 in the attaching / detaching direction of the split pin 12. The jig 31 is provided with a bent portion 36 between the cup portion 34 and the slit portion 35, a distal end portion 37 from the bent portion 36 to the cup portion 34, and a proximal end from the bent portion 36 to the slit portion 35. It has a structure in which the portion 38 is arranged in parallel.

  The hook portion 33 has a hook shape in which one end portion of the jig main body 32 is bent, and has a shape and a size capable of hooking the head portion 13 of the split pin 12 attached to the hanging insulator 1 having a different size. In this way, it is possible to cope with various hanging insulators 1 having different sizes. The cup portion 34 has a concave shape so as to be housed so as to surround the head portion 13 of the split pin 12, and can be put on the head portion 13 of the split pin 12 attached to the hanging insulator 1 having a different size. Thus, it is possible to cope with various types of hanging insulators 1 having different sizes. The opening shape of the cup portion 34 can be rectangular or circular, and is arbitrary. The slit portion 35 has an annular shape extending along the jig main body 32, and the tool 27 is moved along the slit portion 35 in a state in which a tool 27 such as a monkey for applying a striking force is inserted into the slit portion 35. Thus, a structure in which a striking force can be applied by bringing the tool 27 into contact with the bent end 39 is provided. The striking portion is not limited to the annular slit portion 35 described above, and may have another structure that can impart striking force with a tool or the like.

  The attaching / detaching operation of the split pin 12 at the time of exchanging the insulator using the jig 31 having the above structure is performed as shown in FIGS. 3, 5, 7, and 9, the hanging insulator 1 located on the near side is not shown.

  First, the split pin 12 is pulled out from the cap fitting 3 in order to release the connected state between the cap fitting 3 and the pin fitting 4. When pulling out the split pin 12 from the cap fitting 3, as shown in FIGS. 2 and 3, the split pin 12 that exposes the hook portion 33 provided at one end of the jig body 32 from the hole 15 of the cap fitting 3. Hook it on the head 13. In this state, the operator inserts a tool 27 such as a monkey into the slit portion 35 provided in the central portion of the jig main body 32, moves the tool 27 along the slit portion 35, and curves the slit portion 35. It abuts on the end 39. In this way, by applying the striking force (drawing force) of the tool 27 to the bent end portion 39 of the slit portion 35 on the hook portion 33 along the pulling direction of the head portion 13 of the split pin 12, The 12 heads 13 are pulled out from the holes 15 of the cap fitting 3 of the hanging insulator 1 (see FIGS. 4 and 5).

  As a result, by removing the leg portion 14 of the split pin 12 that was interposed between the large-diameter portion 11 of the pin metal fitting 4 and the bottom surface of the recess 9 of the cap metal fitting 3, the large-diameter portion 11 of the pin metal fitting 4 is capped. The state pressed against the periphery of the upper opening of the metal fitting 3 is released, and the large-diameter portion 11 of the pin metal fitting 4 can be removed from the side of the recess 9 of the cap metal fitting 3. As a result, the coupling state of the cap metal fitting 3 and the pin metal fitting 4 is released, and the hanging insulator 1 can be separated. As described above, when the split pin 12 is pulled out from the cap metal fitting 3, in addition to hooking the hook portion 33 to the head 13 of the split pin 12, other parts of the jig main body 32 are brought into a non-contact state with the lever main body 2. By doing so, breakage of the insulator body 2 due to contact with the insulator body 2 can be prevented, and application to the insulator 1 of different sizes is facilitated. In addition, since the portion hooked to the head portion 13 of the split pin 12 is the hook-shaped hook portion 33, the hook portion 33 can be prevented from being detached from the head portion 13 of the split pin 12 when the split pin 12 is pulled out. It is possible to reliably prevent the insulator body 2 from being damaged by the contact.

  On the other hand, in order to connect the cap fitting 3 and the pin fitting 4, the split pin 12 is pushed into the cap fitting 3. When the split pin 12 is pushed into the cap fitting 3, the pin fitting 4 is inserted and disposed in advance from the side of the concave portion 9 of the cap fitting 3. Then, as shown in FIGS. 6 and 7, the cup portion 34 provided at one end of the jig main body 32 is put on the head portion 13 of the split pin 12 drawn out from the hole 15 of the cap fitting 3. In this state, the operator inserts a tool 27 such as a monkey into the slit portion 35 provided in the central portion of the jig main body 32, moves the tool 27 along the slit portion 35, and curves the slit portion 35. It abuts on the end 39. In this way, by applying the striking force (pushing force) of the tool 27 to the bent end portion 39 of the slit portion 35 on the cup portion 34 along the pushing direction of the head portion 13 of the split pin 12, The 12 heads 13 are pushed into the holes 15 of the cap fitting 3 of the hanging insulator 1 (see FIGS. 8 and 9).

  As a result, the leg portion 14 of the split pin 12 enters between the large diameter portion 11 of the pin fitting 4 and the bottom surface of the recess 9 of the cap fitting 3, and the pin fitting 4 disposed in the recess 9 of the cap fitting 3. By pressing the large-diameter portion 11 against the upper opening periphery of the cap fitting 3 with the leg portion 14 of the split pin 12, the pin fitting 4 is fixed to the cap fitting 3 and the suspension lever 1 can be connected. As described above, when the split pin 12 is pushed into the cap metal fitting 3, the portion of the split pin 12 that covers the head portion 13 is the concave cup portion 34, so that the cup portion 34 is split when the split pin 12 is pushed in. The pin 12 can be prevented from coming off from the head 13, and damage to the insulator body 2 due to contact with the insulator body 2 can be reliably prevented.

  The jig 31 is provided with a bent portion 36 between the cup portion 34 and the slit portion 35, so that the bent portion 36 functions as a relief when the split pin 12 is pushed into the cap metal fitting 3. By enlarging the gap between the main body 32 and the insulator main body 2, damage to the insulator main body 2 due to contact with the insulator main body 2 can be more reliably prevented. In addition, since the distal end portion 37 from the bent portion 36 to the cup portion 34 and the proximal end portion 38 from the bent portion 36 to the slit portion 35 are arranged in parallel, the striking force can be easily and reliably applied in the pushing direction of the split pin 12. Can be granted. Further, in the jig 31, when the split pin 12 is attached or detached, the tool 27 inserted into the slit portion 35 is moved along the jig main body 32, and the tool 27 is brought into contact with the curved end portion 39 of the slit portion 35. By doing so, the striking force can be easily and reliably applied in the pulling-out direction or the pushing-in direction of the split pin 12, and workability can be improved.

  The present invention is not limited to the above-described embodiments, and can of course be implemented in various forms without departing from the gist of the present invention. It includes the equivalent meanings recited in the claims and the equivalents recited in the claims, and all modifications within the scope.

1 Isogo (Suspension Isogo)
2 insulator main body 3 cap metal fitting 4 pin metal fitting 12 split pin 13 annular head 27 tool 31 split pin attaching jig 32 jig main body 33 hook-shaped hook part 34 recessed cup part 35 striking part (annular slit part)
36 Bent part 37 Tip part 38 Base part

Claims (3)

A cap in one insulator of two adjacent insulators in a state in which a plurality of insulators having a cap fitting fixed to one side of the insulator body and a pin fitting fixed to the other side of the insulator body are arranged. A split pin attaching / detaching jig for attaching / detaching a split pin for connecting a metal fitting and a pin metal fitting in the other insulator,
A hook-shaped hook portion provided at one end of the rod-shaped jig body and hooked on the annular head portion of the split pin; and a recessed shape provided at the other end of the jig body and covering the annular head portion of the split pin. A cup portion, and a striking portion that is provided between the hook portion and the cup portion of the jig main body and that is provided with a striking force in the attaching / detaching direction of the split pin along the jig main body. Features a split pin attachment / detachment jig.   The striking portion is composed of an annular slit portion extending along the jig body, and the tool is movable along the slit portion in a state where a tool for applying striking force is inserted into the slit portion, The split pin attaching / detaching jig according to claim 1, wherein a striking force can be applied by bringing a tool into contact with an end portion of the slit portion.   2. A bent portion is provided between the cup portion and the hitting portion of the jig body, and a distal end portion from the bent portion to the cup portion and a proximal end portion from the bent portion to the hitting portion are arranged in parallel. Or the split pin attachment jig | tool of 2.

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