JP2018098067A - Cotter for indirect live line construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cotter for indirect live line construction, of which operations are easy.SOLUTION: A cotter 10 can connect one tension resistant insulator 7 and another tension resistant insulator 7 swingably. The cotter 10 has a cotter body 1, a lever member 2 and a reverse prevention member 3. The cotter body 1 has an axis part 1s and a collar part 1f by cutting a first slitted groove 11. The lever member 2 connects one end side to an axis part 1s rotatably, and extends another end side from a tip surface of the axis part 1s or outer periphery of the axis part 1s. The reverse prevention member 3 can rotate around an axis almost orthogonal to a direction in which another end of the lever member 2 extends and can change direction of axis rotation. In a state that the lever member 2 is rotated in one direction, the reverse prevention member 3 is arranged with facing the outer periphery of the axis part 1s and in a state that the lever member is moved with rotation in a tip part side of the axis part 1s, the reverse prevention member 3 approaches the outer periphery of the axis part 1s and rotation movement to another direction of the lever member 2 is inhibited.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a cotter for indirect hot wire construction. In particular, it is an indirect hot wire cotter suitable for indirect hot wire work that uses an insulating operation rod to carry out electrical work in an uninterrupted state, and can be attached to a clevis-type support part of a tension insulator. It relates to the construction of construction cotters.

  In the case of installing an overhead distribution line on a utility pole, it is known that there are two so-called so-called pulling columns and retaining columns. Generally, an overhead distribution line comes into contact with a groove portion of an insulator fixed to an arm supported by a power pole, and a binding wire is wound around the insulator and the overhead distribution line so that the overhead distribution line is used as a power pole. I support it. On the other hand, the retaining column supports the overhead distribution line on the utility pole by attaching a tension insulator coupled to a retention clamp that sandwiches the overhead distribution line to a brace supported on the utility pole.

  FIG. 11 is a front view showing an example of a pillar with a retaining pillar. Referring to FIG. 11, the armor A is fixed to the upper portion of the utility pole P in a horizontal state. A pair of tension insulators 7 and 7 are arranged on both sides of the arm metal A. The pair of tension insulators 7 and 7 are connected to each other so as to be swingable. One tension insulator 7 is connected to the arm metal A via a pair of torsion straps St and St. The other tension insulator 7 connects the retaining clamp Ci so as to be swingable.

  Referring to FIG. 11, the retaining clamp Ci is covered with an insulating cover. The retention clamp Ci holds an aerial distribution line (hereinafter referred to as an electric wire) W inside thereof. As described above, the tensioning pillar supports the electric wire W on the electric pole P by attaching the tension insulator 7 connected to the retaining clamp Ci that sandwiches the electric wire W to the arm metal A supported on the electric pole P. An electric wire W is installed between the pair of tension clamps Ci and Ci without requiring tension. A portion of the electric wire W that bypasses the utility pole P is called, for example, an edge line We.

  FIG. 12 is a partially enlarged view of FIG. 11, and is a state diagram in which the insulating cover is removed from the retention clamp. 13 is a partially enlarged view of FIG. 12, FIG. 13 (A) is a front view of the retaining clamp, and FIG. 13 (B) is a view as seen from the B arrow of FIG. 13 (A).

  FIG. 14 is a diagram showing the structure of the tension insulator. FIG. 14 (A) is a front view of the tension insulator partially shown in cross section, and FIG. 14 (B) is the right side of the tension insulator. FIG. FIG. 15 is a perspective view showing a configuration of a cotter according to the prior art. FIG. 16 is a diagram showing a configuration of a self-locking split pin according to the prior art, FIG. 16A is a front view of the self-locking split pin, and FIG. 16B is a diagram of FIG. It is AA arrow sectional drawing.

  Referring to FIG. 14, the tension insulator 7 includes a cylindrical main body 70 made of porcelain. The tension insulator 7 includes a double clevis-type first support portion 71 and a single clevis-type second support portion 72. The first support portion 71 protrudes toward one end portion of the main body 70. The second support part 72 protrudes to the other end part side of the main body 70. The 1st support part 71 has penetrated the 1st penetration hole 71h to the end. The 2nd support part 72 has penetrated 72h of 2nd through holes to the edge part.

  Referring to FIG. 12 or FIG. 14, a pair of tension insulators 7 with the cotter 7c as the center is inserted by aligning the first through hole 71h and the second through hole 72h and inserting a cylindrical cotter 7c. -7 can be pivotably connected to each other.

Also, referring to FIG. 12 or FIG. 14, a set of the cotter 7c is set as a center by inserting the cotter 7c with the opening provided at the end of the torsion strap St aligned with the first through hole 71h. The torsion strap St · St and one tension insulator 7 can be swingably connected.
Referring to FIG. 12 or FIG. 14, the other tension-resistant insulator is centered on the cotter 7c by inserting the cotter 7c with the opening provided at the end of the retaining clamp Ci aligned with the second through hole 72h. 7 and the tension clamp Ci can be pivotably coupled.

  Referring to FIG. 14, the retaining clamp Ci includes a clamp body C1, a triangular wedge body C2, and a presser fitting C3. The clamp body C1 is slidably connected to the wedge body C2. The clamp body C1 has an annular portion Ca that can be slidably connected to the tension insulator 7 at one end, and a receiving portion Cb at the other end. The end of the wedge body C2 is pushed into the receiving portion Cb together with the peeling portion Wi from which the coating of the electric wire W is partially peeled.

  Referring to FIG. 13, an arc-shaped groove that receives the outer periphery of the peeling portion Wi is formed on the slope of the wedge body C2. The wedge body C2 and the presser fitting C3 are fastened with bolts to clamp (clamp) the peeling portion Wi of the electric wire W.

  Referring to FIG. 15, the cotter 7 c according to the prior art includes a cylindrical shaft portion 71 c and a flange portion 72 c. The shaft portion 71c has a hole 7ch on the side opposite to the flange portion 72c. After connecting the pair of tension insulators 7 and 7 with the cotter 7c (see FIG. 12), the cotter 7c can be prevented from falling off by inserting the split pin 71p into the hole 7ch. Further, after the split pin 71p is inserted into the hole 7ch, the tip of the split pin 71p is expanded to prevent the split pin 71p from falling off.

  The split pin 71p shown in FIG. 15 is a brass split pin called a pine needle shape. The split pin 71p made of brass can be easily deformed at the tip. On the other hand, the split pin 72p shown in FIG. 16 is a stainless steel split pin called a self-locking type. Referring to FIG. 16, when the split pin 72p is forcibly inserted into the hole 7ch of the cotter 7c, the tip of the split pin 72p is elastically restored, and the split pin 72p can be locked to the cotter 7c. The self-locking split pin 72p is excellent in operability.

  Referring to FIG. 12 or FIG. 13, power distribution work such as connecting the tension insulator 7 with the cotter 7 c or pulling the cotter 7 c from the tension insulator 7 is generally performed in an uninterruptible state. It is known that there are two types of so-called hot line construction, which is power distribution work in an uninterruptible state, a direct hot wire method and an indirect hot wire method.

  The direct hot-wire method using insulating gloves is excellent in workability, but the indirect hot-wire method using a long insulated operation rod is used for hot-wire work that handles high-voltage wires from the viewpoint of ensuring the safety of workers. Has moved to.

  Referring to FIG. 11, when exchanging the tension insulator 7, it is necessary to release the load on the cotter 7 c by drawing the electric wire W toward the arm metal A as shown in FIG. 12. In order to draw such wires, a wire rod for indirect hot wire construction called a strain rod is used.

  FIG. 17 is a front view showing a configuration of an example of a wire drawing device for drawing electric wires. FIG. 18 is a front view showing a usage state of the wire tensioner. Referring to FIG. 17 or FIG. 18, the wire tensioner 8 includes a cylindrical main body 81 and a telescopic rod 82 having a cavity inside. The telescopic rod 82 is connected to the main body 81 so as to be movable in the axial direction.

  With reference to FIG. 17 or FIG. 18, the main body 81 has a feed screw (not shown) disposed therein. On the other hand, the telescopic rod 82 has a nut member (not shown) screwed with the feed screw disposed therein.

  17 or 18, the main body 81 includes a cylindrical joint fitting 83 on one end side. The joint fitting 83 can be connected to the tip of a common operation rod (not shown) for indirect hot line construction. When the tip of the common operation rod and the joint fitting 83 are connected and the common operation rod is rotated about its axis, the joint fitting 83 is rotated through a gear device (not shown) disposed inside the main body 81. It can be transmitted to the feed screw. The telescopic rod 82 can be moved in the axial direction with respect to the main body 81.

  Referring to FIG. 17 or FIG. 18, the main body 81 has a gripper 84 called a camler connected to one end. The gripper 84 is composed of a plurality of link members. The electric wire W can be introduced into the gripper 84 from the outer peripheral direction. When the operation lever 841 provided on the lower end side of the gripper 84 is pulled, the gripper 84 can grip the electric wire W from the outer peripheral direction (see FIG. 18).

  Referring to FIG. 17 or FIG. 18, the main body 81 has a wire support portion 85 in the middle portion. The electric wire support portion 85 is opened in a U shape. As shown in FIG. 18, the electric wire support part 85 can introduce the electric wire W from an upper part. By closing the opening of the wire support portion 85 with an opening / closing member (not shown) provided on the upper portion of the wire support portion 85, the wire support portion 85 can freely support the wire W.

  Referring to FIG. 17 or FIG. 18, the telescopic rod 82 connects the hook member 86 to the other end. The hook member 86 is provided with a ring member 86r. The ring member 86r can be gripped by an insulating operation rod (so-called insulating yatco) having a pair of opening and closing arms at the tip. The hook member 86 can be moved upward using the insulating operation rod (not shown).

  Next, with reference to FIG. 18, the usage method of the wire feeder 8 is demonstrated. 18 differs from FIGS. 11 and 12 in that the edge line We is supported by the pin insulator 7p, but the other configurations are the same.

  First, referring to FIG. 18, the hook member 86 is anchored to the annular rope R disposed adjacent to the torsion strap St. Then, the hook member 86 side is protected by the protective sheet Ps with the hook member 86 at the head and the wire tensioner 8 hanging down. This is to prevent the hook member 86 from coming into contact with the charging unit and causing a ground fault. Similarly, the edge line We and the retaining clamp Ci are protected by the protective sheet Ps so that those charged parts are not exposed.

  Next, referring to FIG. 18, a common operation rod (not shown) is connected to joint fitting 83, and the common operation rod is operated to lift one end portion of wire tensioner 8 toward electric wire W. Next, after the electric wire W is introduced into the electric wire support portion 85, the gripper 84 is attached to the electric wire W. Next, when the common operation rod is rotated in one direction around its axis, the telescopic rod 82 can be moved toward the main body 81, and the electric wire W can be relatively pulled toward the arm metal A. Then, as shown in FIG. 12, the load on the cotter 7c can be released.

  After the above preparation is completed, the split pin 71p is pulled out from the cotter 7c by using an insulating operation rod in which a radio pliers-like adapter (not shown) is connected to a pair of opening and closing arms (see FIG. 12).

  Next, referring to FIG. 14B or FIG. 15, the cotter 7c is hit from the opposite side of the collar portion 72c with a tie stick hammer (not shown) to cause the collar portion 72c to protrude. In this case, a tie stick hammer (not shown) is connected to the tip of the common operation rod. Next, the cotter 7c is pulled out from the tension insulator 7 using a radio pliers-like adapter (not shown). Through these series of constructions, the tension insulator 7 can be replaced.

  As described above, there has been a problem that it is not easy to attach the cotter to the tension insulator or remove the cotter pin from the cotter by holding the cotter according to the prior art or the split pin according to the prior art with the insulating operation rod. In particular, when attaching and detaching the cotter to the tension insulator, there was a problem that the split pin was easily dropped.

  In order to eliminate the above-described problems, a cotter for indirect hot wire construction is disclosed in which it is difficult to drop off the split pin and is easy to attach and detach with the indirect hot wire method (see, for example, Patent Document 1).

No. 7-49057

  FIG. 19 is a perspective view showing a configuration of a cotter body included in a cotter for indirect hot wire construction according to the prior art, and a part thereof is shown in cross section. FIG. 20 is a perspective view showing a configuration of a core member provided in a cotter for indirect hot wire construction according to the prior art. FIG. 21 is a perspective view showing a configuration of a leaf spring member provided in a cotter for indirect hot wire construction according to the prior art.

  FIG. 22 is a perspective view showing a configuration of a cotter for indirect hot wire construction according to the prior art, and a part thereof is shown in cross section. FIG. 23 is a longitudinal sectional view showing a configuration of a cotter for indirect hot wire construction according to the prior art.

  FIG. 24 is a longitudinal sectional view showing a configuration of a cotter for indirect hot wire construction according to the prior art, and is a state diagram in which a core member is pushed into the cotter body. FIG. 25 is a perspective view showing an example of using a cotter for indirect hot wire construction according to the prior art.

  Note that FIGS. 19 to 23 of the present application correspond to FIGS. 1 to 5 of Patent Document 1. FIG. 24 and 25 of the present application correspond to FIGS. 6 and 7 of Patent Document 1.

  Referring to FIGS. 19 to 23, a cotter for indirect hot wire construction (hereinafter simply referred to as a cotter) 6 according to the prior art includes a cylindrical cotter body 61 having a hollow interior, a cylindrical core member 62, and A leaf spring member 63 for retaining is provided.

  Referring to FIG. 19 or FIG. 22 and FIG. 23, the cotter body 61 includes a cylindrical portion 61a and a flange portion 61b. The cylindrical portion 61a opens in a direction opposite to the pair of rectangular windows 61w and 61w. The flange portion 61b has an inner diameter and an outer diameter larger than the inner diameter and the outer diameter of the cylindrical portion 61a.

  Referring to FIG. 20 or FIG. 22 and FIG. 23, the core member 62 includes a flat plate-like protrusion 62a, a columnar shaft portion 62b, and a disc-shaped head portion 62c. The protrusion 62a can engage a connecting portion 63a of a leaf spring member 63, which will be described later, with the tip 621 (see FIG. 21). The shaft portion 62b can move slidably inside the cylindrical portion 61a. The outer diameter of the head portion 62c is larger than the outer diameter of the shaft portion 62b. The head 62c has an outer diameter smaller than the inner diameter of the flange 61b.

  Referring to FIGS. 21 to 23, the leaf spring member 63 is formed of a metal plate having spring properties. And the leaf | plate spring member 63 has the connection part 63a formed in C shape, and a pair of protrusion part 63b * 63b which goes to the opposite direction (refer FIG. 21). The pair of protrusions 63b and 63b form an inclined surface 631 that inclines upward so as to open from the connecting portion 63a. Further, the pair of projecting portions 63b and 63b has an extending portion 632 that extends so as to face each other.

  Referring to FIG. 25, for example, when connecting a set of torsion straps St and St connected to the arm metal A and the tension insulator 7, first, the opening provided at the end of the torsion strap St and the first The cotter body 61 is inserted with the 1 through holes 71h being aligned (see FIG. 14).

  Next, referring to FIG. 23, with the leaf spring member 63 attached to the distal end portion of the core member 62, the leaf spring member 63 is at the head, and the core member 62 is placed on the flange 61 b side of the cotter body 61. Insert from. Then, when the protrusions of the pair of protrusions 63b and 63b slide on the inner wall of the cotter main body 61 and the protrusion 63b reaches the window 61w, the pair of protrusions 63b and 63b protrude from the windows 61w and 61w ( (See FIG. 23 or FIG. 25). Thereby, the cotter 6 can be prevented from coming off.

  On the other hand, when the cotter 6 is pulled out from the state shown in FIG. 23, the core member 62 is further pushed into the back side of the cotter body 61 from the state shown in FIG. The cotter 6 according to Patent Document 1 is configured such that the inclined surface 631 of the projecting portion 63b slides to the edge of the window 61w, and the receiving portions of the pair of projecting portions 63b and 63b are retracted from the outer wall of the cotter main body 61. Can be pulled out.

  19 to 23, the cotter 6 according to Patent Document 1 has an advantage that there is no fear of dropping the leaf spring member 63 corresponding to the split pin when being attached to and detached from the tension insulator. However, the cotter 6 according to Patent Document 1 has a problem that it is not easy to operate the core member 62 using a tip tool for indirect hot wire construction.

  There is a need for an indirect hot-wire construction cotter that can prevent the cotter from coming out of at least one pair of tension insulators without using a split pin, and that is easy to operate using an insulating operation rod for indirect hot-wire construction. ing. The above can be said to be the subject of the present invention.

  This invention is made | formed in view of such a subject, and it aims at providing the cotter for indirect hot wire construction which is easy to operate, without using a split pin.

  The inventor attaches a reverse rotation prevention member to the tip portion of the lever member connected to the tip portion of the cotter and changes the direction of the reverse rotation prevention member so that the reverse rotation prevention member comes close to the outer periphery of the shaft portion, and the lever member 2 Based on this, the inventors have invented a new cotter for indirect hot wire construction as described below.

  (1) The cotter for indirect hot-wire construction according to the present invention includes at least one tension insulator having a first through hole penetrating the first support portion having a double clevis shape and a second support portion having a single clevis shape. A cotter for indirect hot wire construction for oscillatingly connecting the other tension insulator having a second through-hole penetrating into the first through-hole, and is movably inserted into the first through-hole and the second through-hole, A cotter body having a cylindrical shaft portion with a slit groove cut out at the tip portion, and a flange portion formed at the base end portion of the shaft portion and having an outer diameter larger than the outer diameter of the shaft portion; The one end side is rotatably connected to the tip end portion of the shaft portion while the one end side is accommodated in the first slit groove, and the other end side is connected to the tip end surface of the shaft portion or the A band plate-shaped lever member for preventing the extension extending from the outer periphery of the shaft portion, and the other end portion of the lever member extend. The lever member is connected to the other end portion of the lever member so as to be rotatable about an axis substantially orthogonal to the direction, and a long insulating operation rod having a pair of opening and closing gripping arms at the distal end portion is used. A rectangular parallelepiped anti-reverse member that can freely change the direction around the axis of the shaft, and in a state where the anti-reverse member is disposed to face the tip surface of the shaft portion, the shaft portion is interposed via the anti-reverse member. The lever can be inserted into the first through hole and the second through hole, the lever member is rotated in one direction, the anti-reverse member is disposed opposite the outer periphery of the shaft portion, and the anti-reverse member is disposed on the shaft. In the state of rotating to the tip end side of the portion, the reverse rotation preventing member is close to the outer periphery of the shaft portion and prevents the lever member from rotating in the other direction.

  (2) It is preferable that the lever member is rotated in one direction by its own weight and the weight of the reverse rotation preventing member.

  (3) It is preferable that the lever member rotates in one direction by its own weight and the weight of the reverse rotation preventing member.

  (4) It is preferable that the reverse rotation preventing member has a second slit groove into which the other end portion of the lever member can be freely introduced at a central portion.

  The cotter for indirect hot wire construction according to the present invention uses a long insulating operation rod having a pair of gripping arms at the tip portion, and in the state where the reverse rotation prevention member is rotated toward the tip portion side of the shaft portion, However, it is possible to prevent the lever member 2 from rotating in the other direction near the outer periphery of the shaft portion.

  Moreover, the cotter for indirect hot wire construction according to the present invention can rotate in a direction in which the lever member hangs down by its own weight and the weight of the reverse rotation preventing member.

It is a perspective view which shows the structure of the cotter for indirect hot wire construction by one Embodiment of this invention, and is the state figure which arrange | positioned the reverse rotation prevention member facing the front end surface of a shaft part. It is a perspective view which shows the structure of the cotter for indirect hot wire construction by the said embodiment, and is a state figure which arrange | positioned the reverse rotation prevention member facing the front end surface of the axial part. It is a perspective exploded view which shows the structure of the cotter for indirect hot wire construction by the said embodiment. It is a perspective view which shows the structure of the cotter for indirect hot wire construction by the said embodiment, and is a state figure which arrange | positioned the reverse rotation prevention member facing the outer periphery of a shaft part. It is a front view which shows the structure of the cotter for indirect hot wire construction by the said embodiment. It is a figure which shows the structure of the cotter for indirect hot wire construction by the said embodiment, FIG. 6 (A) is a top view of the cotter for indirect hot wire construction, FIG.6 (B) is the left side surface of FIG. FIG. FIG. 7 is a front view showing the configuration of the cotter for indirect hot wire construction according to the embodiment, in which the lever member is rotated in one direction and the reverse rotation preventing member is rotated toward the tip end side of the shaft portion. FIG. It is a front view which shows the structure by an example of the insulation operating rod which concerns on this invention. It is the front view which expanded the principal part of FIG. FIG. 10 is a left side view of FIG. 9. It is a front view which shows an example of the mounting pillar by a retaining armor. It is the elements on larger scale of Drawing 11, and is a state figure which removed the insulating cover from the retention clamp. FIG. 13A is a partially enlarged view of FIG. 12, FIG. 13A is a front view of the retaining clamp, and FIG. 13B is a view as seen from an arrow B of FIG. It is a figure which shows the structure of a tension insulator, FIG. 14 (A) is a front view of the tension insulator which showed a part in cross section, FIG.14 (B) is a right view of a tension insulator. It is a perspective view which shows the structure of the cotter by a prior art. It is a figure which shows the structure of the self-locking type split pin by a prior art, FIG. 16 (A) is a front view of a self-locking type split pin, FIG.16 (B) is AA of FIG. 16 (A). It is arrow sectional drawing. It is a front view which shows the structure by an example of the tension device for drawing an electric wire. It is a front view which shows the use condition of a wire tensioner. It is a perspective view which shows the structure of the cotter main body with which the cotter for indirect hot wire construction by a prior art is shown, and has shown one part by the cross section. It is a perspective view which shows the structure of the core member with which the cotter for indirect hot wire construction by a prior art is equipped. It is a perspective view which shows the structure of the leaf | plate spring member with which the cotter for indirect hot wire construction by a prior art is equipped. It is a perspective view which shows the structure of the cotter for indirect hot wire construction by a prior art, and has shown one part by the cross section. It is a longitudinal cross-sectional view which shows the structure of the cotter for indirect hot wire construction by a prior art. It is a longitudinal cross-sectional view which shows the structure of the cotter for indirect hot wire construction by a prior art, and is a state figure which pushed the core member into the inside with respect to the cotter main body. It is a perspective view which shows the usage example of the cotter for indirect hot wire construction by a prior art.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
[Configuration of cotter for indirect hot-wire construction]
Initially, the structure of the cotter for indirect hot wire construction by one Embodiment of this invention is demonstrated.

  FIG. 1 is a perspective view showing a configuration of a cotter for indirect hot-wire work according to an embodiment of the present invention, and is a state diagram in which a reverse rotation preventing member is disposed to face a tip surface of a shaft portion.

  FIG. 2 is a perspective view showing the configuration of the cotter for indirect hot-wire construction according to the embodiment, and is a state diagram in which the reverse rotation preventing member is arranged to face the tip surface of the shaft portion.

  FIG. 3 is an exploded perspective view showing the configuration of the cotter for indirect hot wire construction according to the embodiment. FIG. 4 is a perspective view showing the configuration of the cotter for indirect hot-wire construction according to the embodiment, and is a state diagram in which the reverse rotation preventing member is disposed to face the outer periphery of the shaft portion.

  FIG. 5 is a front view showing the configuration of the cotter for indirect hot wire construction according to the embodiment. FIG. 6 is a diagram showing the configuration of the cotter for indirect hot-line construction according to the embodiment, FIG. 6 (A) is a plan view of the cotter for indirect hot-wire work, and FIG. 6 (B) is FIG. ) Is a left side view.

  FIG. 7 is a front view showing the configuration of the cotter for indirect hot wire construction according to the embodiment, in which the lever member is rotated in one direction and the reverse rotation preventing member is rotated toward the tip end side of the shaft portion. FIG.

(Configuration of insulation operation rod)
Next, before describing the configuration of the indirect hot-wire construction cotter according to the embodiment of the present invention, the configuration of an example of an insulating operation rod for operating the indirect hot-wire construction cotter will be described.

  FIG. 8 is a front view showing a configuration of an example of the insulating operation rod according to the present invention. FIG. 9 is an enlarged front view of the main part of FIG. FIG. 10 is a left side view of FIG.

  Referring to FIGS. 8 to 10, the insulating operation bar 5 is composed of a long operation bar 51 and a gripping tool 52. Further, the insulating operation bar 5 includes an operation bar 53. The gripping tool 52 is attached to the tip of the operation bar 51.

  Referring to FIG. 8 or FIG. 9, the gripping tool 52 is composed of a pair of curved gripping arms 5a and 5b that open and close. One gripping arm 5a is a fixed arm with a base end fixed, and the other gripping arm 5b rotates around a rotation shaft 5c provided at the base end of one gripping arm 5a. It is a movable arm.

  Referring to FIG. 8, the operation bar 53 is held along the operation bar 51. The distal end portion of the operating rod 53 is rotatably connected to the other gripping arm 5b. And if the operation lever 54 provided in the base end part of the action | operation stick | rod 53 is operated, the other holding arm 5b can be opened and closed with respect to one holding arm 5a. The insulating operation rod 5 is formed of an insulating plastic pipe or the like in the middle of the operation rod 51 and the operation rod 53, and ensures insulation so as to be suitable for the indirect hot wire method.

  With reference to FIG. 8, when the operation lever 54 is grasped and the operation lever 54 is brought close to the operation rod 51, the other gripping arm 5b can be closed with respect to the one gripping arm 5a. When the operation lever 54 is released, the other gripping arm 5b can be opened with respect to one gripping arm 5a by the force of a spring (not shown) connected to the control lever 54. FIG. 8 or FIG. 9 shows a state in which the other gripping arm 5b is opened to the maximum with respect to one gripping arm 5a.

  Referring to FIG. 9 or FIG. 10, one gripping arm 5a projects a tapered gripping claw 51a. The gripping claw 51a forms a gripping surface 50a. The gripping surface 50a is formed substantially in parallel along the centrifugal direction from the rotation center of the rotation shaft 5c. Similarly, the other gripping arm 5b projects a tapered gripping claw 51b. The gripping claw 51b forms a gripping surface 50b. The gripping surface 50b is arranged with a predetermined opening angle with the gripping surface 50a. With reference to FIG. 8 or FIG. 9, when the operation lever 54 is gripped, the gripping surface 50b can be brought close to the gripping surface 50a.

  The insulating operation rod 5 shown in FIGS. 8 to 16 is a so-called “insulating Yoko” that can grip a high-voltage distribution line or the like placed at a high place with a pair of gripping claws 51a and 51b.

(overall structure)
Next, the whole structure of the cotter for indirect hot wire construction by one Embodiment of this invention is demonstrated. Referring to FIGS. 1 to 7, an indirect hot-wire construction cotter (hereinafter abbreviated as cotter) 10 according to an embodiment of the present invention includes a cotter body 1, a strip-shaped lever member 2 for retaining, And the rectangular parallelepiped reverse rotation prevention member 3 is provided.

  1 to 7, the cotter body 1 has a cylindrical shaft portion 1s and a flange portion 1f. The shaft portion 1s can be inserted through the first through hole 71h and the second through hole 72h (see FIG. 14B). The shaft portion 1s has a first slit 11 cut out at the tip (see FIGS. 1 to 4). The flange portion 1f is formed at the proximal end portion of the shaft portion 1s. The flange portion 1f has an outer diameter larger than the outer diameter of the shaft portion 1s.

  Referring to FIGS. 1 to 7, the lever member 2 is pivotally connected to the tip end portion of the shaft portion 1 s with one end portion thereof being accommodated in the first slit groove 11. ing. The lever member 2 extends on the other end side from the tip end surface of the shaft portion 1s or the outer periphery of the shaft portion 1s.

  Referring to FIGS. 1 to 7, the reverse rotation preventing member 3 is connected to the other end portion of the lever member 2 so as to be rotatable around an axis substantially orthogonal to the direction in which the other end portion of the lever member 2 extends. Yes. The reverse rotation preventing member 3 can change the direction around the axis by using a long insulating operation rod having a pair of opening and closing gripping arms 5a and 5b at the tip (see FIGS. 8 to 10).

  With reference to FIG. 1 or FIG. 2 and FIG. 5 or FIG. 6, in a state where the reverse rotation preventing member 3 is disposed opposite to the tip surface of the shaft portion 1 s, the shaft portion 1 s is inserted into the first through hole via the reverse rotation preventing member 3. It can be inserted through 71h and the second through hole 72h (see FIG. 14B).

  On the other hand, from the state shown in FIG. 1 or FIG. 6, the lever member 2 is rotated in one direction so that the reverse rotation preventing member 3 is disposed opposite to the outer periphery of the shaft portion 1s, and the reverse rotation preventing member 3 is moved to the shaft portion 1s. In the state of rotating to the distal end side (see FIG. 4 or FIG. 7), the reverse rotation preventing member 3 is close to the outer periphery of the shaft portion 1s, so that the lever member 2 can be prevented from rotating in the other direction. Thereby, the cotter 10 can be retained.

(Composition of cotter body)
Next, the configuration of the cotter body 1 according to the embodiment will be described. Referring to FIGS. 1 to 3, the cotter body 1 has a press-fitting hole 1 h penetrating the first slit 11 in the shaft portion 1 s. A pin 1p can be press-fitted into the press-fitting hole 1h (see FIG. 3). The lever member 2 has a hole 21h opened at one end (see FIG. 3). The pin 1p can be inserted into the hole 21h.

  Referring to FIG. 3, the cotter body 1 and the lever member 2 can be rotatably connected by press-fitting the pin 1p into the press-fitting hole 1h in a state where the press-fitting hole 1h and the hole 21h are aligned. It is preferable to configure the width of the first slot 11 and the plate thickness of the lever member 2 so that the lever member 2 rotates in one direction by the weight of the lever member 2 and the weight of the reverse rotation preventing member 3. .

  1 to 7, the flange portion 1f has a pair of flat portions 11f and 11f formed on the outer periphery. The pair of flat portions 11f and 11f are directed in opposite directions. In the state shown in FIG. 1, it is preferable to grip the pair of flat portions 11f and 11f with the pair of gripping arms 5a and 5b (see FIGS. 8 to 10), so that the collar portion 1f can be securely gripped.

(Configuration of reverse rotation prevention member)
Next, the configuration of the reverse rotation preventing member 3 according to the embodiment will be described. Referring to FIGS. 1 to 4, the reverse rotation preventing member 3 has a second slot 31 cut out at the center. The other end side of the lever member 2 can be introduced into the second slit 31.

  1 to 4, the reverse rotation preventing member 3 has a press-fitting hole 3 h that penetrates the second slit 31. A pin 3p can be press-fitted into the press-fitting hole 3h (see FIG. 3). The lever member 2 has a hole 22h opened to the other end side (see FIG. 3). The pin 3p can be inserted into the hole 22h.

  With reference to FIG. 3, the lever member 2 and the reverse rotation preventing member 3 can be rotatably connected by press-fitting the pin 3p into the press-fitting hole 3h in a state where the press-fitting hole 3h and the hole 22h are aligned. It is preferable to configure the width of the second slot 31 and the plate thickness of the lever member 2 so that the reverse rotation preventing member 3 does not easily change its orientation with respect to the lever member 2.

  1 to 4, the reverse rotation preventing member 3 has a pair of gripping surfaces 31r and 31r. The grip surface 31r is provided with a cross-shaped anti-slip process. The gripping surfaces 31r and 31r are preferably gripped by the pair of gripping arms 5a and 5b (see FIGS. 8 to 10), and the reverse rotation preventing member 3 can be securely gripped.

[Operation of cotter for indirect hot wire construction]
Next, the operation and effect of the cotter 10 will be described while explaining the operation method of the cotter 10 according to the embodiment.

  First, referring to FIG. 1, using a long insulating operation rod having a gripping arm 5a, 5b at the tip thereof in a horizontal state so that the lever member 2 does not rotate easily ( 8 to 10), grips the flange 1f. Next, with the first through hole 71h of one tension insulator 7 and the second through hole 72h of the other tension insulator 7 aligned, the shaft portion 1s is passed through the first reverse rotation member 3 through the first penetration hole 7s. The hole 71h and the second through hole 72h are inserted. Thereby, one tension insulator 7 and the other tension insulator 7 can be slidably coupled (see FIG. 12).

  Next, as shown in FIG. 2, when the cotter 10 is rotated about 90 degrees around its axis, the lever member 2 is rotated in the direction depending on its own weight and the weight of the reverse rotation preventing member 3 (FIG. 4). Or refer to FIG.

  Next, using a long insulating operation rod having the gripping arms 5a and 5b at the tip (see FIGS. 8 to 10), the anti-reverse member 3 is brought close to the outer periphery of the shaft 1s. 3 is rotated to the tip end side of the shaft portion 1s (see FIG. 4 or FIG. 7).

  Referring to FIG. 4 or FIG. 7, the cotter 10 is arranged so that the reverse rotation preventing member 3 is close to the outer periphery of the shaft portion 1 s, thereby preventing the reverse rotation preventing member 3 from returning to the state shown in FIG. 2. it can. The cotter 10 can be prevented from coming off by the above procedure.

  Referring to FIGS. 1 to 7, a cotter 10 according to an embodiment is rotatable to a belt-like lever member 2 that is rotatably connected to a shaft portion 1 s of a cotter body 1 and to the other end of the lever member 2. The anti-reverse member 3 is connected to the front end of the shaft portion 1s by using a long insulating operation rod having grip arms 5a and 5b at the end (see FIGS. 8 to 10). In the state where the lever member 2 is rotated, the reverse rotation preventing member 3 is close to the outer periphery of the shaft portion 1 s and can prevent the lever member 2 from rotating in the other direction.

  Referring to FIGS. 1 to 7, the cotter 10 according to the embodiment can prevent the cotter from being detached without using a split pin, and at least one set of insulating operation rods 5 for indirect hot wire construction. The tension insulators 7 and 7 can be easily connected to be swingable.

The cotter for indirect hot wire construction according to the present invention can be expected to have the following effects.
(1) The tension insulator can be easily replaced by indirect hot wire work.
(2) There is no need to operate a small split pin.
(3) No worry about dropping the split pin.
(4) It is not necessary to insert a split pin into the small hole of the cotter by using an insulating operation rod.

  The present invention disclosed an indirect hot-wire construction cotter that can easily connect a pair of tension insulators using an insulating operation rod for indirect hot-wire work. The tension insulator and the torsion strap can be easily connected without being limited to the tension insulators.

DESCRIPTION OF SYMBOLS 1 A pair of clip main body 1f A collar part 1s Shaft part 2 Lever member 3 Reverse rotation prevention member 5 Insulation operation rod 5a / 5b A pair of holding arm 7 Tensile insulator 10 Cotter (cotter for indirect hot wire construction)
11 1st slot groove 71 1st support part 71h 1st through hole 72 2nd support part 72h 2nd through hole

Claims (4)

At least one tension insulator having a first through-hole penetrating the first support portion having a double clevis shape and the other tension insulator having a second through-hole penetrating the second support portion having a single clevis shape. Is a cotter for indirect hot wire construction,
A cylindrical shaft portion that is freely inserted into the first through hole and the second through hole and has a first slit groove cut out at a distal end portion, and a base end portion of the shaft portion. A cotter body having a collar part having an outer diameter larger than the outer diameter of the part;
In a state where the one end side is accommodated in the first slot, the one end side is rotatably connected to the tip end portion of the shaft portion, and the other end side is connected to the tip end surface of the shaft portion or the shaft. A strip-shaped lever member for retaining from the outer periphery of the part,
A long insulation that has a pair of gripping arms that open and close at the distal end, and is connected to the other end of the lever member so as to be rotatable about an axis substantially orthogonal to the direction in which the other end of the lever member extends. A rectangular parallelepiped anti-reverse member that can freely change the direction of the lever member about its axis, using an operation rod,
In the state where the reverse rotation prevention member is disposed opposite to the tip surface of the shaft portion, the shaft portion can be inserted into the first through hole and the second through hole via the reverse rotation prevention member.
When the lever member is rotated in one direction, the anti-reverse member is disposed opposite to the outer periphery of the shaft portion, and the anti-reverse member is rotated when the anti-reverse member is rotated toward the tip end side of the shaft portion. A cotter for indirect hot wire construction in which the member is close to the outer periphery of the shaft portion and prevents the lever member from rotating in the other direction.   The cotter for indirect hot wire construction according to claim 1, wherein the lever member rotates in one direction by its own weight and the weight of the reverse rotation preventing member.   The cotter for indirect hot wire construction according to claim 1 or 2, wherein the reverse rotation preventing member has a pair of non-slip gripping surfaces that can be gripped by the pair of opening and closing gripping arms.   4. The cotter for indirect hot-wire construction according to claim 1, wherein the reverse rotation preventing member has a second slit groove into which the other end portion of the lever member can be freely introduced at a central portion. 5.

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