JP5902889B2 - Bird's nest removal tool and indirect hot line construction tool - Google Patents

Description

  The present invention relates to a bird's nest removal tool used to remove a bird's nest made at a high place such as a power pole, and more specifically, removes a bird's nest by arranging a plurality of claws vertically. The present invention relates to a bird's nest removal tool and an indirect hot wire construction tool.

  In recent years, birds such as crows sometimes nest in high places such as utility poles. Bird nests are made not only with dead branches, but also with wires such as wire hangers. When this wire comes into contact with the electric wire, it is short-circuited, which is not only dangerous, but may cause a power failure. Therefore, Patent Document 1 discloses a nesting material container for removing a bird's nest formed on a steel tower or the like.

  This nesting material container is characterized in that each base end portion of a pair of bars arranged in a V-shape is supported by the tip of an operating rod made of an insulating material, and a net is stretched between both bars. . To remove the nest using this nesting material container, two workers climb the tower. Then, one worker pushes the net of the nesting material container to the lower side of the nest, and another worker thrusts the nest with a stick or the like. The nest is received on the net of the nesting material container, and the nest is removed without being caught by an insulator or an electric wire.

Japanese Patent Laid-Open No. 11-4648

  The nesting material container disclosed in Patent Document 1 receives a bird's nest that has been pushed down by a stick or the like on a net. Therefore, the bird's nest cannot be efficiently removed because it is crushed by the stick.

  Therefore, an object of the present invention is to provide a bird's nest removal tool and an indirect hot wire construction tool that can remove a bird's nest made at a high place such as a utility pole without breaking it.

  The bird's nest removal tool according to the present invention has a length for holding the bird's nest X, and the upper claws to which the one end portions 1a and 1a are connected so that the other end portions 1b and 1b come into contact with and separate from each other. 2 and the lower claw 3, and the auxiliary claw so as to advance and retreat with respect to the opposing surfaces 3 a and 2 a of the upper claw 2 and the lower claw 3 according to the contact and separation operation of the upper claw 2 and the lower claw 3. 15 is arranged.

  In this case, when the lower nail 3 is inserted below the bird's nest X, the bird's nest X is drawn to the inserted lower nail 3. That is, the bird's nest X is removed in a state where it is scolded by the lower claws 3. On the other hand, in a state where the lower nail 3 is inserted below the bird's nest X, the upper nail 2 comes to be positioned above the bird's nest X. If nail 3 is sandwiched from above and below, bird's nest X can be removed without breaking. In addition, since the auxiliary claw 15 is arranged so as to advance and retreat with respect to the opposing surfaces 3a, 2a of the upper claw 2 and the lower claw 3 according to the contact and separation operation of the upper claw 2 and the lower claw 3, Even when the nest X is firmly formed, the auxiliary claw 15 comes to bite into the bird's nest X, and the bird's nest X can be reliably removed.

Further, according to the present invention, the upper claw 2 and the lower claw 3 are configured such that the claw unit 10 in which claw members 11 and 12 are arranged in parallel in the same direction as the upper claw 2 and the lower claw 3 The claw members 11 and 12 are detachably attached to the upper claw 2 and the lower claw 3 so that the claw members 11 and 12 can be brought into and out of contact with each other according to the contact and separation operation of the lower claw 3. It is also possible to adopt a configuration in which the claw members 11 and 12 are arranged.

  In this case, since the claw unit 10 is detachably attached to at least one of the upper claw 2 and the lower claw 3, the claw unit 10 can be sandwiched in a wide range with respect to the bird's nest X. In other words, the nest unit 10 can sandwich the bird's nest X over a wide range, so that the nest branches and wires can be supported, and the bird's nest X can be removed without losing its shape. Furthermore, since the auxiliary claws 15 are arranged on the claw members 11 and 12 of the claw unit 10 so as to be able to advance and retreat, the pinching and the biting are performed at the same time. However, it can be removed easily and reliably.

  Further, according to the present invention, the upper claw 2, the lower claw 3, the claw unit 10, and the auxiliary claw 15 are formed of an insulating material, or formed of a metal material and then covered with an insulating material. Such a configuration can also be adopted.

  In this case, it is possible to prevent a short circuit caused by the upper and lower claws 2 and 3, the claw unit 10, and the auxiliary claw 15 coming into contact with a charging unit such as an electric wire.

  Moreover, according to the indirect hot wire construction tool according to the present invention, any one of the above-described bird's nest removal tools A is attached to the distal end portion 30b of the indirect hot wire work gripping tool Y.

  In this case, the bird's nest X can be removed by remotely operating the bird's nest removal tool A with the indirect live line tool. For this reason, the worker can safely remove the bird's nest X while avoiding a charging unit such as an electric wire.

  According to the present invention, the upper nail and the lower nail have a length for holding the bird's nest, and the upper nail and the lower nail are connected to each other so that the other end of each other is in contact with and away from the nest. The claws can sandwich a bird's nest made at a high place such as a utility pole from above and below, and can be easily removed without breaking the bird's nest. In addition, the auxiliary claws are arranged so that the upper and lower claws move forward and backward with respect to the opposing surfaces of the upper and lower nails according to the movement of the upper and lower nails. Even in the nest, the auxiliary claw can be reliably removed by biting into the bird's nest. Therefore, it is possible to prevent a trouble such as a power failure from occurring due to the bird's nest.

  In addition, according to the present invention, the bird's nest removal tool is attached to the tip of the indirect hot-line work gripping tool, so when removing the bird's nest, the upper and lower claws and auxiliary claws are attached. It becomes possible to operate remotely, and an operator can safely remove the battery while avoiding a charging part such as an electric wire.

(A) is a side view of a main body in a bird's nest removal tool according to an embodiment of the present invention, and (b) is a plan view of FIG. 1 (a). (A) is a side view of the nail unit in the bird's nest removal tool according to one embodiment of the present invention, (b) is a plan view of the nail unit arranged on the left and right, and (c) is FIG. ) Rear view. It is a figure which shows the bird's nest removal tool which concerns on one Embodiment of this invention, and is a top view which shows the state which attached the nail | claw unit to the both sides of the main body. It is a figure which shows the nail | claw unit in the bird's nest removal tool which concerns on one Embodiment of this invention, and is a figure which shows the state which closed the upper and lower nail | claw member. The figure which shows the operation | movement principle in the bird's nest removal tool which concerns on one Embodiment of this invention. It is a figure which shows the state which attached the bird's nest removal tool which concerns on one Embodiment of this invention to the holding part of the holding tool for indirect hot wire construction, (a) shows the state which opened each upper and lower nail | claw. A side view and (b) are side views showing the state where the upper and lower claw members were closed. The figure which shows the holding tool for indirect hot wire construction.

  An embodiment of a bird's nest removal tool and an indirect hot wire construction tool according to the present invention will be described with reference to FIGS. 1 (a), (b) to 6 (a), (b). 1 (a), FIG. 2 (a), FIG. 4, FIG. 6 (a), and (b), each drawing is viewed from the front, and the right side is the front side of the main body, the claw unit, or the bird's nest removal tool. The left side is the rear side of the main body or claw unit or bird's nest removal tool, and the upper and lower sides are the upper side and lower side of the main body or claw unit or bird's nest removal tool. 1 (b), 2 (b), and 3 when viewed from the front, the right side is the front side of the main body or claw unit or bird nest removal tool, and the left side is the main body or claw unit or bird's side. The rear side and the upper side of the nest removal tool are the left side of the main body or claw unit or bird nest removal tool, and the lower side is the right side of the main body or claw unit or bird nest removal tool. In FIG. 2C, the top, bottom, left and right are defined as the upper, lower, left, and right sides of the claw unit as viewed from the front.

  A bird's nest removal tool A according to this embodiment includes a main body 1 and a claw unit 10. As shown in FIG. 1A, the main body 1 has a substantially V shape when viewed from the side, and a pair of upper and lower upper claws 2 and lower claws 3 having a length capable of crawling a bird's nest are formed on the outer side. It arrange | positions so that it may open large and it can contact / separate as it goes to. And the upper nail | claw 2 and the lower nail | claw 3 are formed in hollow so that the link mechanism mentioned later can operate | move, and are exhibiting a taper shape toward the front-end | tip part. In addition, as shown in FIG. 1B, the base 1 (one end) 1a side has a rectangular shape in plan view, and the main body 1 has an isosceles trapezoidal shape in plan view on the tip end (other end) 1b side. Presents. The reason for this is that a pair of gripping pieces 35a, 35b of a gripping tool Y for indirect hot-line work described later is formed in a rectangular shape in plan view so that it can be easily inserted and removed, and it is easy to crawl and nest the bird's nest. Thus, it is formed in a trapezoidal shape such as a plan view. And each grip piece 35a, 35b of the grip tool Y for indirect hot wire construction mentioned later is inserted in the base end part 1a of the main body 1, and is screwed (refer FIG. 6 (a), (b)). A mounting portion 4 is formed. Further, as shown in FIGS. 1A and 1B, the base end portion 1a has an insertion hole 16 for the bolt B for fixing the claw unit 10 with respect to the horizontal line H (longitudinal center line x). In addition, a positioning pin for positioning the claw unit 10 is provided so as to project outward (parallel to the insertion hole 16) from both side surfaces of the base end 1a. On the other hand, an uneven portion, that is, an anti-slip 5 when a bird's nest is pinched or pinched is formed on the tip 1b of the main body 1. And in the state where each holding piece 35a, 35b of the holding tool Y for indirect hot work is attached to the mounting portion 4 of the main body 1, the upper nail 2 and the lower nail 3 of the main body 1 are held by the indirect hot wire work. It is adapted to follow the opening / closing operation of the gripping pieces 35a, 35b of the tool Y.

  As shown in FIGS. 2A to 2C, the claw unit 10 has an upper claw member 11 and a lower claw member 12 having the same length and the same shape as the upper claw 2 and the lower claw 3 of the main body 1 in the same direction. A plurality (two in this embodiment) are arranged in parallel. The difference is that the base end portion 10a side of the claw unit 10 is formed in a rectangular shape slightly larger than the base end portion 1a of the main body 1, and the contact / separation operation of the upper claw 2 and the lower claw 3 of the main body 1 Accordingly, the pair of auxiliary claws 15 are arranged at the front and rear so that the upper claws 2 and the lower claws 3 move forward and backward with respect to the opposing surfaces 3a, 2a. The base end portion 10a of the claw unit 10 is formed with an insertion hole 16 for the bolt B in a direction orthogonal to the center line x (horizontal line H) in the longitudinal direction, and the positioning pin P is used for mounting the claw unit 10 An escape hole 17 is formed so as not to interfere with the main body 1 and the claw unit 10. In addition, similarly to the upper claw 2 and the lower claw 3 of the main body 1, a non-slip 18 is formed at each tip of the upper claw member 11 and the lower claw member 12 of the claw unit 10. The left and right claw units 10 are mounted with bolts B so as to be line-symmetric with respect to the left and right side surfaces of the main body 1 (see FIG. 3). In addition, the length of the upper nail 2 and the upper nail member 11 is about 30 to 35 cm, the length of the lower nail 3 and the lower nail member 12 is about 25 to 30 cm, and the nail unit 10 is attached to the upper nail 2 and the lower nail 3. The attached width dimension is about 15 cm. In particular, the reason why the width dimension in the state where the claw unit 10 is attached to the upper nail 2 and the lower nail 3 is about 15 cm is that the distance between the insulators arranged on the arm metal is about 16 cm, and is made between the insulators. This is to facilitate insertion of the bird nest removal tool A when the bird nest is removed.

  The usage mode of the claw unit 10 will be specifically described. When the bird's nest is firmly formed, only the upper claw 2 and the lower claw 3 of the main body 1 are used without using the claw unit 10. By doing so, the lower nail 3 can be easily inserted under the bird's nest, and the bird's nest can be supported only by the upper nail 2 and the lower nail 3. Further, when the bird's nest is not firmly formed, for example, as shown in FIG. 3, the claw unit 10 is attached to both side surfaces of the upper claw 2 and the lower claw 3 and is configured in a comb shape. By doing so, the bird's nest that is unstable is sandwiched from above and below by the upper and lower claws 3 and the upper and lower claw members 11 and 12 of the claw unit 10, so that the nest branches, wires, etc. Can be removed without destroying the bird's nest.

  As shown in FIG. 2A, the auxiliary claw 15 has a right-angled triangular shape in a side view, and has an isosceles triangular shape in a plan view as shown in FIG. The link mechanism 20 is pivotally supported so that it can advance and retreat with respect to the opposing surfaces 12a and 11a of the upper claw member 11 and the lower claw member 12 of the claw unit 10. The link mechanism 20 is pivotally supported in a direction orthogonal to the horizontal line H (longitudinal center line x) at fulcrums a1 and a2 arranged at the base ends of the upper and lower claws 2 and 3. One end of the link 21 is arranged along the longitudinal direction of the upper claw 2 and the lower claw 3 and is connected to the fulcrums b1 and b2 arranged at the tip of the first link 21. The second link 22 is connected to the fulcrums c1 and c2 arranged at the corner (the corner formed by the short side and the hypotenuse when viewed in FIG. 2A). Yes. Further, fulcrums d1 and d2 arranged at the tip portions of the upper and lower claws 2 and 3 are formed by the other corners of the auxiliary claws 15 (when viewed in FIG. 2A, short sides and bottom sides). (Corner part) is pivotally supported. A driving space S is formed in the upper and lower claw members 11 and 12 so that the link mechanism 20 (mainly the second link 22) can be driven.

  Therefore, as shown in FIG. 5, when the upper claw 2 and the lower claw 3 are rotated from the position of the solid line to the position of the chain line, the fulcrums d1 and d2 of the auxiliary claw 15 are the rotation trajectories of the upper claw 2 and the lower claw 3. And the fulcrums c1 and c2 move to the positions indicated by the chain lines. At this time, the second link 22 moves to the position indicated by the chain line along with the movement of the fulcrums c1 and c2, and the first link 21 moves to the position indicated by the chain line. That is, the auxiliary claw 15 is rotated about 60 degrees from the lower side to the front side of the inner surfaces of the upper and lower claw members 11 and 12, so that the auxiliary claw 15 is moved from the retracted position (inside the upper and lower claw members 11 and 12) indicated by the one-dot chain line. It turns to the advance position (outside) shown by the dotted line and stops at the intersecting position. More specifically, when the auxiliary claw 15 is located inside the upper and lower claw members 11 and 12 (when in the retracted position), the short side has a horizontal line H as shown in FIG. The base is positioned so as to follow the curves of the inner surfaces of the upper and lower claw members 11, 12. When it is located outside (when it is in the advanced position), as shown in FIG. 4, the short side is positioned so as to intersect the horizontal line H, and the tip formed by the base and the hypotenuse is vertically The claw members 11 and 12 are configured to advance and intersect each other with respect to the opposing surfaces 12a and 11a. That is, when the tip portions of the upper and lower claw members 11 and 12 intersect, the bird's nest can be removed by reliably biting into the bird's nest.

  When the upper and lower claws 2 and 3 and the upper and lower claw members 11 and 12 of the claw unit 10 are made of a metal such as stainless steel, they are covered (not shown) with an insulating cover, Even if the claw 2, the lower claw 3, and the upper and lower claw members 11, 12 of the claw unit 10 come into contact with the electric wire, they are not short-circuited. Further, when the upper and lower claws 2 and 3 and the upper and lower claw members 11 and 12 of the claw unit 10 are formed of a resin such as FRP or ABS, it is not necessary to cover them with an insulating cover.

  Next, an indirect hot wire construction tool in which the above-described bird's nest removal tool A is attached to the tip of the indirect hot wire work holding tool Y will be described. First, the configuration of the indirect hot wire holding tool Y will be briefly described with reference to FIG. An insulating cylindrical main shaft 30, a gripping portion 35 disposed at the distal end portion 30 b of the main shaft 30, and a base end portion 30 a of the main shaft 30, so that the gripping portion 35 can be opened and closed by hand. The operation mechanism part 40 comprised is provided.

  The main shaft 30 has a cylindrical shape, and is formed of a member that does not easily deform and does not deteriorate the insulation, such as an epoxy resin-based reinforced plastic or a polyester resin-based reinforced plastic that has a low hygroscopic property. Then, both sides of the interior are plugged, and waterproof treatment such as coating the surface with an adhesive is performed to prevent water infiltration (not shown). The main shaft 30 is gripped to prevent an electric shock accidentally fitted to and fixed to a rubber cap 31 fitted to the opening end portion of the main shaft 30 on the base end portion 30a side. A safety limit collar 32 for clarifying the boundary between the parts that may be used and other parts, and a draining collar (water draining collar) 33 fitted and fixed above the safety limit collar 32 as a measure against rain. It has. The safety limit collar 32 and the draining collar 33 are both made of soft synthetic rubber.

  The grip portion 35 is connected to an arc-shaped fixed-side grip piece 35a extending from the tip portion 30b of the main shaft 30 and one end portion of an operation shaft 43 to be described later, and is in contact with and away from the fixed-side grip piece 35a. The movable side holding piece 35b is configured as described above.

  The operation mechanism unit 40 is supported by rotation and is elastically biased so as to always return to the original position by the helical spring 41, and as described above, one end portion of the operation mechanism unit 40 is movable side gripping piece. And an operation shaft 43 having an insulating property and having the other end connected to the operation lever 42. A draining collar 44 is fitted and fixed in the middle of the operation shaft 43.

  Then, when the operation lever 42 is rotated to the base end 30a side of the main shaft 30, the operation shaft 43 moves obliquely downward, and the movable gripping piece 35b moves to the fixed gripping piece 35a side. When the force applied to the operation lever 42 located on the base end 30a side of the main shaft 30 is loosened while being in contact with the gripping piece 35a, the operation lever 42 is returned to its original position by the elastic bias of the helical spring 41 and is movable. The side gripping piece 35b is separated from the fixed side gripping piece 35a.

  Further, as shown in FIGS. 6 (a) and 6 (b), the fixed side holding piece 35a and the movable side holding piece 35b of the holding tool Y for indirect hot-line construction are the base ends of the main body 1 of the bird nest removal tool A, as shown in FIGS. With respect to the attachment part 4 arrange | positioned at the part 1a, it is comprised so that it may insert in an axial direction and be screwed. Therefore, by operating the operation lever 42 of the indirect hot wire holding tool Y, the movable side holding piece 35b is opened and closed with respect to the fixed side holding piece 35a. The upper and lower claws 2 and 3 of the removal tool A and the upper and lower claw members 11 and 12 of the claw unit 10 are opened and closed.

  Next, usage modes of the bird's nest removal tool and the indirect hot wire construction tool according to this embodiment will be described with reference to FIGS. 6 (a) and 6 (b). The bird's nest removal tool A includes a cutting means for cutting a wire and the like, a collecting means such as a net and a bag, and a cleaning tool such as a brush for removing dust (all not shown). ).

  First, one or two workers carry the holding tool Y for indirect hot-line construction in which the main body 1 of the bird's nest removal tool A is attached to a pair of holding pieces 35a, 35b, cutting means, and collecting means. Then, get on the bucket of an aerial work vehicle and approach the bird's nest. And when the wire which makes the bird's nest X is passed through the hole formed in the armrest of the utility pole, this wire is first cut | disconnected by a cutting means. Then, the collecting means is placed under the bird's nest X (not shown), and the lower nail 3 of the bird's nest removal tool A is placed under the bird's nest X as shown in FIG. Insert. The operator who holds the collecting means and the operator who operates the bird's nest removal tool A may be the same person or different persons.

  As described above, when the bird's nest X is firmly made, only the upper nail 2 and the lower nail 3 of the bird's nest removal tool A are used, and the bird's nest X is firmly made. If not, the nail unit 10 is attached to both side surfaces of the upper nail 2 and the lower nail 3 of the bird nest removal tool A. In any case, the operator holds the proximal end portion 30a of the holding tool Y for indirect hot wire construction, inserts the lower nail 3 of the bird nest removal tool A under the bird nest X, The upper nail 2 of the nest removal tool A is positioned above the bird's nest X.

  Then, the operator operates the operation lever 42 of the indirect hot-line work holding tool Y, and as shown in FIG. 6B, the upper nail 2 and the lower nail 3 of the bird nest removal tool A, the nail unit 10 The upper and lower claw members 11 and 12 are brought close to each other, and the bird's nest X is sandwiched from above and below. At this time, the auxiliary claws 15 of the upper and lower claw members 11 and 12 of the claw unit 10 are moved close to the upper and lower claws 2 and 3 of the bird's nest removal tool A, so that the upper and lower claw members 11 and 12 of the claw unit 10 are moved. Since the auxiliary claw 15 will bite into the bird's nest X, the base end 30a of the indirect hot wire gripping tool Y will be in front. When pulled, the bird's nest X is easily removed from the utility pole and placed in the collecting means.

  At this time, even if the branches and leaves forming the bird's nest X fall between the upper and lower claws 2 and 3 of the bird's nest removal tool A and the upper and lower claws 11 and 12 of the claw unit 10, , Collected in the collecting means and never fall on the ground. Furthermore, the armband and the like after the bird's nest X is removed are cleaned by a cleaning tool (not shown).

  In addition, the upper and lower claws 2 and 3 of the bird's nest removal tool A and the upper and lower claw members 11 and 12 of the claw unit 10 are opened and closed at positions separated from the charging parts of the electric wires and peripheral devices. Can work on.

  As described above, according to the bird's nest removal tool A according to the present embodiment, the upper nail 2 and the lower nail 3 having a length to hold the bird's nest X and can be sandwiched from above and below go outward. The upper nail 2 and the lower nail 3 are arranged so as to be opened up and down and can be brought into contact with and separated from each other. As described above, since the auxiliary claw 15 is arranged, the bird's nest X can be easily and safely removed.

  In addition, this invention can be variously changed within the range of the invention specific matter described in the claim, without being limited to the said embodiment.

  For example, in the case of the above-described embodiment, the auxiliary claw 15 is rotatably supported with respect to the inner surfaces of the upper and lower claw members 11 and 12 of the claw unit 10, but advances and retreats in a direction substantially orthogonal to the horizontal line H. You may do it.

  Moreover, in the case of the said embodiment, although it was set as the indirect hot wire construction tool which attached the bird's nest removal tool A to a pair of holding piece 35a, 35b of the grip tool Y for indirect hot wire construction, it is integrated. It may be.

DESCRIPTION OF SYMBOLS 1a ... One end part (base end part), 1b ... Other end part (tip part), 2 ... Upper nail, 3 ... Lower nail, 2a, 3a, 11a, 12a ... Opposite surface, 10 ... Nail unit, 11, 12 ... Claw member, 15 ... auxiliary claw, 30 ... main shaft, 30b ... tip of gripping tool for indirect hot wire construction, A ... bird's nest removal tool, B ... bolt, P ... positioning pin, S ... space for driving link mechanism , X ... Bird's nest, Y ... Indirect hot wire gripping tool

Claims (4)

  The upper nail (2) and the lower claw that are long enough to hold the bird's nest (X) and to which the other end portions (1b, 1b) are connected to and separated from each other The claw (3) is further provided on the opposing surfaces (3a, 2a) of the upper claw (2) and the lower claw (3) according to the contact / separation operation of the upper claw (2) and the lower claw (3). A bird's nest removal tool, wherein an auxiliary claw (15) is arranged so as to advance and retreat. The upper nail (2) and the lower nail (3) include a nail unit (10) in which nail members (11, 12) are juxtaposed in the same direction as the upper nail (2) and the lower nail (3), The claw members (11, 12) can be attached to and detached from the upper claw (2) and the lower claw (3) so that the claw members (11, 12) can be brought into and out of contact with each other according to the movement of the upper claw (2) and the lower claw (3). Can be attached freely,
The bird nest removal tool according to claim 1, wherein the auxiliary claw (15) is arranged on each claw member (11, 12) of the claw unit (10).   The upper claw (2), the lower claw (3), the claw unit (10), and the auxiliary claw (15) are formed of an insulating material, or formed of a metal material and then covered with an insulating material. The bird nest removal tool according to claim 2, wherein the bird nest removal tool is provided. The bird's nest removal tool (A) according to any one of claims 1 to 3 is attached to a tip (30b) of a gripping tool (Y) for indirect hot-wire construction. Wire construction tools.

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