JP5897628B2 - Adapter for indirect hot-wire construction - Google Patents

Description

  The present invention relates to an adapter for indirect hot wire construction. In particular, a pair of adapters that can be attached to and detached from a pair of openable and closable gripping arms provided at the tip of an insulated Yatco for indirect hot-wire construction. The present invention relates to a structure of an adapter for indirect hot-wire construction that can be used as a Yatco and can suppress a drop of an electric wire between gripping arms when a quick arm is disposed between gripping arms.

  There are two types of hot-line work that performs high-voltage distribution lines without power interruption: direct hot-wire method and indirect hot-wire method. In the direct hot wire construction method, workers wear protective equipment such as high-pressure rubber gloves and perform power distribution work by directly touching the high-voltage distribution line that is energized. On the other hand, the indirect hot wire method allows the operator to perform power distribution work without directly touching the high-voltage power distribution line that is energized using an insulating operation rod (hot stick) or the like.

  In general, an insulating operation rod is composed of a long operation rod and a power distribution work tool (hereinafter referred to as a tip tool) attached to the tip of the operation rod. And the insulation operating rod is comprised so that a front-end tool can be replaced | exchanged according to the work objectives, such as holding | griping or cutting | disconnecting a high voltage distribution line.

  As an insulating operation rod for gripping such a remotely disposed high-voltage distribution line, an insulating operation rod for remote gripping that can open and close a pair of gripping arms provided at the tip of the insulating operation rod by hand operation, so-called “insulation” Yatko is known. In addition to the operation of gripping the electric wire using this insulating Yatco, the operation of covering the electric wire with a protective tube, the operation of removing the crow's nest nested in the electric pole, and the like are performed.

  FIG. 6 is a front view of an insulating operation rod for holding a high-voltage distribution line or the like. FIG. 7 is an enlarged front view of the distal end portion of the insulating operation rod shown in FIG. 8 is a left side view of FIG.

  Referring to FIG. 6, the insulating operation rod 9 is composed of a long operation rod 91 and a gripping tool 92. Further, the insulating operation rod 9 includes an operation rod 93. The gripping tool 92 is attached to the distal end portion of the operation rod 91.

  Referring to FIG. 6 or FIG. 7, the gripping tool 92 is composed of a pair of curved gripping arms 9a and 9b that open and close. One gripping arm 9a is a fixed arm with a base end fixed, and the other gripping arm 9b rotates around a rotation shaft 9c provided at the base end of one gripping arm 9a. It is a movable arm.

  Referring to FIG. 6, the operation bar 93 is held along the operation bar 91. The distal end portion of the operating rod 93 is rotatably connected to the other gripping arm 9b. And if the operating lever 94 provided in the base end part of the action | operation stick | rod 93 is operated, the other holding arm 9b can be opened and closed with respect to one holding arm 9a. The insulating operation rod 9 is configured by an insulating plastic pipe or the like in the middle portion between the operation rod 91 and the operation rod 93, and ensures insulation so as to be suitable for the indirect hot wire method.

  Referring to FIG. 6, when the operation lever 94 is grasped and the operation lever 94 is brought close to the operation rod 91, the other gripping arm 9b can be closed with respect to the one gripping arm 9a. When the operation lever 94 is released, the other holding arm 9b can be opened with respect to one holding arm 9a by the force of a spring (not shown) connected to the operation lever 94. FIG. 6 or FIG. 7 shows a state where the other gripping arm 9b is opened to the maximum with respect to one gripping arm 9a.

  Referring to FIG. 7 or FIG. 8, one gripping arm 9a projects a tapered gripping claw 91a. The gripping claw 91a forms a gripping surface 90a. The gripping surface 90a is formed substantially in parallel along the centrifugal direction from the rotation center of the rotation shaft 9c. Similarly, the other gripping arm 9b projects a tapered gripping claw 91b. The gripping claw 91b forms a gripping surface 90b. The gripping surface 90b is disposed with a predetermined opening angle with the gripping surface 90a. With reference to FIG. 6 or FIG. 7, when the operation lever 94 is gripped, the gripping surface 90b can be brought close to the gripping surface 90a.

  The insulation operating rod 9 shown in FIGS. 6 to 8 is a so-called “insulated Yoko” that can hold a high-voltage distribution line or the like arranged at a high place with a pair of holding claws 91a and 91b.

  Incidentally, the gripping tool 92 shown in FIGS. 6 to 8 has a problem that it is difficult to securely grip a gripping object having a substantially circular cross section such as an electric wire or a straight sleeve with the flat gripping surfaces 90a and 90b. It was. In addition, there is a problem that an object to be grasped having a substantially circular cross section is easily dropped into the pair of grasping arms 9a and 9b.

  In order to solve such a problem, an insulating jacket that prevents the object to be gripped from falling into the pair of gripping arms is disclosed. (For example, refer to Patent Document 1).

  However, the insulating Yatco according to Patent Document 1 has a rubber plate having a plurality of ridges formed on the surface thereof, and is capable of gripping snakes and the like reliably, but has a substantially circular cross section. There is a problem that it is not easy to reliably hold an object.

  For this reason, an insulating operation rod (so-called quick type Yatco) specialized only for gripping a gripping object having a substantially circular cross section has been developed. FIG. 9 is a diagram illustrating a configuration of an example of a quick type yatco. FIG. 9A is a front view of the quick type yatco, and FIG. 9B is a right side view of the quick type yatco.

  Referring to FIG. 9, the gripping tool 82 includes a pair of curved gripping arms 8a and 8b that open and close. One gripping arm a is a fixed arm with a base end fixed, and the other gripping arm 8b rotates around a rotation shaft 8c provided at the base end of one gripping arm 8a. It is a movable arm.

  Referring to FIG. 9, the operation bar 83 is held along the operation bar 81. The distal end portion of the actuating rod 83 is rotatably connected to the other gripping arm 8b. And if the operation lever 84 provided in the base end part of the action | operation stick | rod 83 is operated, the other holding arm 8b can be opened and closed with respect to one holding arm 8a. The insulating operation rod 8 is formed of an insulating plastic pipe or the like at the intermediate portion between the operation rod 81 and the operation rod 83, and ensures insulation so as to be suitable for the indirect hot wire method.

  Referring to FIG. 9, when the operation lever 84 is grasped and the operation lever 84 is brought close to the operation rod 81, the other gripping arm 8b can be closed with respect to the one gripping arm 8a. When the operation lever 84 is released, the other gripping arm 8b can be opened with respect to one gripping arm 8a by the force of a spring (not shown) connected to the control lever 84.

  Referring to FIG. 9, one gripping arm 8a is formed so as to be refracted in a hook shape. The other gripping arm 8b is formed to be curved in an arc shape. One gripping arm 8a is a pair of bifurcated arms bifurcated. The other gripping arm 8b is a single arm introduced between the pair of branch arms. Thus, when the pair of gripping arms 8a and 8b are closed, it is possible to reliably grip a gripping target having a substantially circular cross section.

JP 2012-157121 A

  However, there are various gripping objects in the indirect hot line construction. Although the insulating operating rod 8 shown in FIG. 9 can reliably hold a relatively small diameter electric wire or the like, there is a problem that it cannot be used for other purposes. The insulating operating rod 9 shown in FIG. 6 can grip a relatively large-diameter electric wire, but as described above, there is a problem that the object to be gripped easily falls into the pair of gripping arms.

  If both the insulation operation rod 8 and the insulation operation rod 9 are prepared in a bucket installed in an aerial work vehicle, these problems can be solved, but the inside of the bucket becomes narrow, which hinders work efficiency. It is worried that it will cause.

  From the above, it is a set of adapters that can be attached to and detached from a pair of opening and closing gripping arms provided at the end of an insulating YAT for indirect hot-wire construction, and when the quick type arm is extended from the gripping arm, Therefore, there has been a demand for an adapter for indirect hot wire construction that can be used as a quick type armature and that can prevent the electric wire from dropping between the opening and closing arms when the quick type arm is arranged between the gripping arms.

  This invention is made | formed in view of such a subject, and it aims at providing the adapter for indirect hot-wire construction which can play the role of a quick type yatco in the insulating yat for indirect hot-wire work. .

  The present inventor can use the quick type arm as a quick type arm by attaching the quick type arm to the distal end of the insulating unit, and when the quick type arm is disposed between the gripping arms that open and close, the electric wire may fall between the gripping arms. By configuring the adapter so that it can be suppressed, it has been found that it can play the role of a quick-type yatco in the insulating yatco for indirect hot-wire construction, based on this, the following new adapter for indirect hot-wire construction It came to invent.

  (1) The adapter for indirect hot wire construction according to the present invention can be attached to a pair of open and closed curved gripping arms provided at the distal end of an insulating operation rod, and can hold a gripping object between opposing gripping surfaces. An adapter for indirect hot-wire construction constructed as a set, which is a block-shaped adapter body having a hole portion into which a gripping claw protruding in a centrifugal direction from a pair of gripping arms can be inserted is opened on the opposite side to the gripping surface And an engaging means for fixing the gripping claw from a surface opposite to the gripping surface of the gripping claw, fixing one end to the adapter main body, extending along the pair of gripping surfaces, and the like A pair of plate-like curved arms curved at the other end side so that the end portions can cross each other, and one of the curved arms has a single arm at the center, and the other curved arm is A pair of bifurcated branches into which the tip of the single arm can be introduced A first attachment in which a pair of the curved arms are opposed to each other so as to extend from the gripping claws by inserting the gripping claws from one opening end of the hole portion of the adapter body. And a second attachment state in which the pair of curved arms are arranged to face each other along the curved inner wall of the gripping arm by inserting the gripping claw from the other opening end of the hole of the adapter body. , Can be converted to.

  (2) The locking means is held inside the adapter main body, an engagement pin that can protrude from the inner wall of the hole, and an abutment pin that contacts the gripping claw from a surface opposite to the gripping surface of the gripping claw. It is preferable that the engagement pin has a compression coil spring that urges a force toward the grip claw.

  (3) It is preferable that the pair of adapter main bodies have a gripping surface facing each other as a rough surface.

  (4) It is preferable that one set of the curved arms is detachably fixed to an attachment piece projecting toward one end of the adapter main body.

  In the adapter for tangential wire construction according to the present invention, a pair of curved arms are arranged so as to face each other so that a gripping claw is inserted from one opening end of the hole of the adapter body and extended from the gripping claw. Since the gripping claw is inserted from the other open end of the hole portion of the adapter body and the pair of curved arms can be converted to the second mounting state in which the pair of curved arms are arranged to face each other along the curved inner wall. There is an effect that it is not necessary to prepare a plurality of insulating operation bars having different uses.

It is a perspective view which shows the structure of the adapter for indirect hot wire construction by one Embodiment of this invention. It is a figure which shows the structure of the adapter for indirect hot wire construction by the said embodiment, FIG. 2 (A) is a perspective view of one adapter for indirect hot wire construction, FIG.2 (B) is one indirect hot wire construction. FIG. 2C is a cross-sectional view of a main part of one adapter for indirect hot wire construction. It is a front view which shows the principal part of the adapter for indirect hot wire construction by the said embodiment by a longitudinal section, and a pair of indirect hot wire construction adapter is set to a pair of holding arms in the state where the pair of holding arms are most open. It is the attached state figure. FIG. 4 is a front view showing a state change diagram of FIG. 3 with a pair of gripping arms closed and a pair of curved arms closed. It is a front view which shows the principal part of the adapter for indirect hot wire construction by the said embodiment by a longitudinal section, and a pair of curved arm was arrange | positioned inside a pair of holding arm in a state where a pair of holding arm was most opened. It is a state diagram. It is a front view of an insulation operation stick for grasping a high voltage distribution line. It is the front view which expanded the front-end | tip part of the insulation operating rod shown in FIG. FIG. 8 is a left side view of FIG. 7. It is a figure which shows the structure by an example of a quick type yatco, FIG. 9 (A) is a front view of a quick type yatco, FIG.9 (B) is a right view of a quick type yatco.

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

  FIG. 1 is a perspective view showing a configuration of an adapter for indirect hot wire construction according to an embodiment of the present invention. FIG. 2 is a diagram showing the configuration of the adapter for indirect hot-wire construction according to the embodiment, FIG. 2 (A) is a perspective view of one adapter for indirect hot-wire construction, and FIG. The principal part longitudinal cross-sectional view of the adapter for indirect hot wire construction and FIG.2 (C) are the principal part cross-sectional views of one adapter for indirect hot wire construction.

  FIG. 3 is a front view showing the main part of the adapter for indirect hot wire construction according to the embodiment in a longitudinal section, and a pair of indirect hot wires in a pair of gripping arms in a state where the pair of gripping arms are most open. It is the state figure which attached the adapter for construction.

  4 is a front view showing a state change diagram of FIG. 3 and showing a state in which a pair of gripping arms are closed and a pair of curved arms are closed.

  FIG. 5 is a front view of the main part of the adapter for indirect hot-wire construction according to the embodiment shown in a vertical cross section, with a pair of curved arms being inside the pair of gripping arms in a state where the pair of gripping arms are most open. FIG.

  In addition, since the effect | action of the component which has the code | symbol same as the code | symbol used by the prior art is made the same, description may be abbreviate | omitted below.

(overall structure)
Referring to FIGS. 1 to 5, an adapter for indirect hot wire construction (hereinafter abbreviated as “adapter”) 10 according to an embodiment of the present invention includes a block-shaped adapter body 1, a locking means 2, and a set of plates. Shaped curved arms 3a and 3b.

(Adapter body configuration)
Referring to FIGS. 1 to 5, the adapter body 1 can be attached to a pair of curved gripping arms 9 a and 9 b provided at the distal end portion of the insulating operation rod 90 that opens and closes. Further, the adapter body 1 can hold a gripping object such as a relatively large diameter electric wire Wb between a pair of gripping surfaces 10a and 10a facing each other (see FIG. 5). In addition, it is preferable to form rough surfaces, such as a twill eye knurl, in the holding surface 10a.

(Adapter body configuration)
Referring to FIGS. 1 to 5, the adapter body 1 can be attached to a pair of curved gripping arms 9 a and 9 b provided at the distal end portion of the insulating operation rod 90 that opens and closes. Further, the adapter body 1 can hold a gripping object such as a relatively large diameter electric wire Wb between a pair of gripping surfaces 10a and 10a facing each other (see FIG. 5).

  Referring to FIG. 2, the adapter main body 1 has a hole 11h opened on the side opposite to the gripping surface 10a. A gripping claw 91a or a gripping claw 91b protruding in a centrifugal direction from the pair of gripping arms 9a and 9b can be inserted into the hole 11h (see FIG. 3).

  Referring to FIGS. 1 to 5, the adapter main body 1 has a band-shaped attachment piece 11 protruding to one end side. One end of curved arms 3a and 3b, which will be described later, can be detachably fixed to the attachment piece 11. The mounting piece 11 is provided with a female screw hole 11s for fixing the curved arms 3a and 3b with a male screw or the like (see FIG. 2A). And the adapter main body 1 protrudes the curved arm 3a or the curved arm 3b from the front-end | tip part so that it may extend along a pair of holding surface 10a * 10a.

(Configuration of locking means)
Next, the configuration of the locking means 2 will be described. Referring to FIG. 2, the locking means 2 includes an engagement pin 21 and a compression coil spring 22. The engaging pin 21 includes a shaft portion 21s and a flange portion 21f. The shaft portion 21 s is accommodated in the cylindrical portion 2 p protruding from the outer wall of the adapter main body 1. The tip of the shaft portion 21s protrudes from the inner wall of the hole portion 11h (see FIG. 2B). The flange portion 21f is in contact with the upper end edge of the cylindrical portion 2p.

  Referring to FIG. 2 (B), the compression coil spring 22 is wound around the outer periphery of the shaft portion 21s. The compression coil spring 22 is housed inside the cylindrical portion 2p. One end portion of the compression coil spring 22 is fixed to the shaft portion 21s. The other end of the compression coil spring 22 is fixed to the inner wall of the cylindrical portion 2p. The compression coil spring 22 urges the force that the tip of the shaft portion 21s protrudes into the hole portion 11h.

  With reference to FIG. 2A or 2B, when the collar 21f is gripped and the engaging pin 21 is pulled up against the elastic force of the compression coil spring 22, the gripping claw 91a or the gripping claw 91b can be accommodated in the hole 11h (see FIG. 3). Then, when the flange portion 21f is released, the distal end portion of the engaging pin 21 can be brought into contact with the gripping claws 91a or the gripping claws 91b from the surface opposite to the gripping surfaces 90a and 90b of the gripping claws 91a or 91b. The grip claw 91a or the grip claw 91b is preferably provided with a recess 9d into which the tip of the engagement pin 21 enters (see FIG. 1 or FIG. 3).

  Referring to FIG. 2B or FIG. 2C, the shaft portion 21s protrudes the locking pin 21p in the centrifugal direction. On the other hand, a slit-shaped groove 21m for guiding the locking pin 21p in the axial direction of the shaft portion 21s is provided inside the cylindrical portion 2p.

  With reference to FIG. 2 (B) or FIG. 2 (C), when the collar portion 21f is gripped and the engagement pin 21 is pulled up, the locking pin 21p can be moved to a height exceeding the upper end edge of the cylindrical portion 2p. . When the engaging pin 21 is rotated in the outer peripheral direction, the locking pin 21p can be brought into contact with the upper end edge of the cylindrical portion 2p. Thereby, the state where the engagement pin 21 is pulled up can be maintained, and after the gripping claw 91a or the gripping claw 91b is accommodated in the hole portion 11h, the engagement pin 21 is rotated in the reverse direction to grip the adapter body 1. It can be fixed to the claw 91a or the holding claw 91b.

(Configuration of curved arm)
Next, the configuration of the pair of curved arms 3a and 3b will be described. Referring to FIG. 1, the bending arm 3 a or the bending arm 3 b is detachably fixed at one end thereof to the attachment piece 11 using a hexagon socket head bolt or the like. The pair of curved arms 3a and 3b extend along the pair of gripping surfaces 10a and 10a, and are curved at the other end so that the other ends can intersect. Then, by arranging the pair of curved arms 3a and 3b so as to face each other, it is possible to reliably grip a relatively small diameter electric wire Ws or the like (see FIG. 4).

  Referring to FIG. 1, one curved arm 3a has a single arm 31a at the center. The other curved arm 3b has a pair of bifurcated arms 31b and 31b that are bifurcated into which the tip of the single arm 31a can be introduced. Since the distal end portion of the single arm 31a and the distal end portions of the pair of branch arms 31b and 31b intersect each other, a relatively small diameter electric wire Ws can be reliably gripped (see FIG. 4).

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

  With reference to FIGS. 1 to 3, the adapter 10 can be fixed with the engaging pin 21 by inserting the gripping claw 91 a or the gripping claw 91 b from one opening end of the hole portion 11 h (see FIG. 3). The pair of adapters 10 and 10 can sandwich a gripping object such as a relatively small diameter electric wire Ws between a pair of opposing curved arms 3a and 3b (see FIG. 4).

  From the state shown in FIG. 3, when the operating lever 94 is grasped and the operating lever 94 is brought close to the operating rod 91 (see FIG. 6), the other adapter 10 can be closed with respect to the one adapter 10. That is, the other curved arm 3b can be closed with respect to one curved arm 3a (see FIG. 4). In the state shown in FIG. 4, the distal end of the single arm 31 a and the distal ends of the pair of branch arms 31 b and 31 b cross each other, so that a relatively small-diameter electric wire Ws and the like can be reliably gripped.

  Further, referring to FIG. 5, the adapter 10 can be fixed with the engaging pin 21 by inserting the gripping claw 91a or the gripping claw 91b from the other opening end of the hole portion 11h. In the state shown in FIG. 5, the pair of adapters 10 and 10 can hold a gripping object such as a relatively large diameter electric wire Wb between the gripping surfaces 10 a and 10 a facing each other.

  Further, in the state shown in FIG. 5, the pair of curved arms 3a and 3b are disposed to face each other along the curved inner walls of the gripping arms 9a and 9b, so that the relatively large-diameter electric wires Wb are paired with the pair of gripping arms. It can prevent falling out of 9a and 9b.

  From the state shown in FIG. 5, when the operating lever 94 is grasped and the operating lever 94 is brought close to the operating rod 91 (see FIG. 6), the other adapter 10 can be closed with respect to one adapter 10. A gripping object such as a relatively large diameter electric wire Wb can be sandwiched between the gripping surfaces 10a and 10a facing each other.

  As described above, the adapter 10 according to the embodiment is configured so that the gripping claws 91a and 91b are inserted from one opening end of the holes 11h and 11h of the adapter main bodies 1 and 1 and extended from the gripping claws 91a and 91b. A first mounting state in which the pair of curved arms 3a and 3b are opposed to each other, and gripping claws 91a and 91b are inserted from the other opening ends of the holes 11h and 11h of the adapter main bodies 1 and 1, and the gripping arms 9a and Since it can be converted into a second mounting state in which a pair of curved arms 3a and 3b are arranged to face each other along the curved inner wall of 9b, it is not necessary to prepare a plurality of insulating operation bars having different applications, which is convenient. It is.

The adapter for indirect hot wire construction according to the present invention has the following effects.
(1) It can play the role of a quick yatco with an insulating yatco for indirect hot wire construction.
(2) Even a thin wire can be securely gripped.
(3) The electric wire can be prevented from falling off.
(4) It is not necessary to prepare a quick type YATKO separately.
(5) The interior of the bucket is not complicated and the internal space is widened.

  Although the present invention has disclosed an adapter for indirect hot-wire construction that can indirectly hot-line high-voltage distribution lines in an uninterruptible state using an insulating operation rod or the like, the adapter of the present invention is for indirect hot-wire construction. It is expected to be applied in other fields without being limited to the above.

DESCRIPTION OF SYMBOLS 1 Adapter main body 2 Locking means 3a One curved arm 3b The other curved arm 9a and 9b A pair of holding arm 10 Adapter (adapter for indirect hot wire construction)
10a and 10a Opposing gripping surfaces 11h Hole 31a Single arm 31b and 31b A pair of branch arms 90a and 90b Holding surfaces 91a and 91b Holding claws

Claims (4)

It is an adapter for indirect hot-wire work that consists of a set that can be attached to a pair of open and closed curved gripping arms provided at the tip of an insulating operation rod and can hold a gripping object between opposing gripping surfaces. And
A block-shaped adapter body in which a hole into which a gripping claw protruding in a centrifugal direction from a pair of gripping arms can be inserted is opened on the opposite side of the gripping surface;
A locking means that is attached to the adapter body and fixes the gripping claw from a surface opposite to the gripping surface of the gripping claw;
A pair of plate-like curved arms that fix one end to the adapter body, extend along the pair of gripping surfaces, and bend the other end so that the other end can intersect,
One of the curved arms has a single arm in the center,
The other curved arm has a pair of bifurcated arms bifurcated into which the tip of the single arm can be introduced,
A first mounting state in which the pair of curved arms are arranged to face each other so that the gripping claws are inserted from one opening end of the hole portion of the adapter main body and extended from the gripping claws;
The gripping claw is inserted from the other opening end of the hole of the adapter body, and converted into a second attachment state in which a pair of the curved arms are arranged to face each other along the curved inner wall of the gripping arm. Possible adapter for indirect hot-wire construction. The locking means is
An engagement pin that can protrude from the inner wall of the hole portion and a gripping claw from a surface opposite to the gripping surface of the gripping claw,
The adapter for indirect hot wire construction according to claim 1, further comprising: a compression coil spring that is held inside the adapter main body and biases the force of the engagement pin toward the gripping claw.   The adapter for indirect hot wire construction according to claim 1 or 2, wherein the pair of adapter bodies has a gripping surface facing each other as a rough surface.   The adapter for indirect hot-wire construction according to any one of claims 1 to 3, wherein one set of the bending arms is detachably fixed to an attachment piece projecting toward one end of the adapter body. .

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