Nest removal tool

Abstract

To provide a nest removal tool allowing a user to easily remove a nest with a simple operation.SOLUTION: A nest removal tool includes: a rod-shaped tool body 2; an opening / closing body 3 whose base end is connected to one end side of the tool body 2 to be freely opened and closed around the base end, and that extends in a creeping manner from the one end side to the other end side of the tool body 2 in a closed state and extends from one end side of the tool body 2 in a direction substantially perpendicular to the tool body 2 in an open state; and a stopper 4 attached to the tool body 2, being movable in a longitudinal direction of the tool body 2, and capable of holding a free end of the opening / closing body 3 when the opening / closing body 3 is closed. When the tool body 2 is inserted into a nest, with the free end of the opening / closing body 3 held by the stopper 4, the stopper 4 moves toward the other end side of the tool body 2, the holding by the stopper 4 is released, and the opening / closing body 3 is opened.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a nest removal tool for removing nests built on the cross arm of a utility pole or the like. [Background technology]

[0002] For example, if crows build a nest on the cross arm of a utility pole, the nest may come into contact with the electric wires and cause a power outage, so conventionally, regular patrols have been carried out to check for nests, and if a nest is found, it has been removed.When doing this, for example, the nest has been broken up with insulating pliers and removed little by little, which is time-consuming and puts a heavy burden on the workers.

[0003] On the other hand, a nest removal tool that can easily remove nests is known (see, for example, Patent Document 1). This nest removal tool has a spiral insertion part that can be inserted into the nest by a predetermined insertion operation (screwed), and this insertion part is provided with a stopper means to prevent it from coming off the nest. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-82112 Summary of the Invention [Problem to be solved by the invention]

[0005] However, nests come in a variety of sizes and conditions, and the nest removal tool described in Patent Document 1 simply needs to be inserted into the nest, so depending on the size and condition of the nest, it may be necessary to use multiple nest removal tools simultaneously to remove the nest, which can be laborious and time-consuming. Moreover, to insert the insertion part into the nest, the insertion part must be screwed into the nest, which places a heavy burden on the worker.

[0006] Therefore, an object of the present invention is to provide a nest removal tool that can easily remove nests with a simple operation. [Means for solving the problem]

[0007] In order to solve the above problem, the invention of claim 1 is a nest removal tool for removing nests that have been built in the upper space including the cross arm of a utility pole, and is characterized by comprising: a rod-shaped tool body; an opening / closing body whose base end is connected to one end side of the tool body and can be opened and closed freely using the base end as a base point, and which, when closed, extends in a crawling manner from one end side of the tool body to the other end side, and which, when open, extends from one end side of the tool body in a direction approximately perpendicular to the tool body; and a stopper that is attached to the tool body and can move freely in the longitudinal direction of the tool body, and can hold the free end of the opening / closing body when the opening / closing body is closed, and when the tool body is passed through the nest while the free end of the opening / closing body is held by the stopper, the stopper moves to the other end side of the tool body, the hold by the stopper is released, and the opening / closing body opens.

[0008] The invention of claim 2 is characterized in that, in the nest removal device described in claim 1, the opening and closing body is composed of multiple rod-shaped opening and closing bars, and when the opening and closing body is open, the multiple opening and closing bars extend approximately radially from the main body of the device as the center.

[0009] The invention of claim 3 is characterized in that, in the nest removal tool of claim 1 or 2, one end of the tool body is formed sharply.

[0010] The invention of claim 4 is characterized in that in the nest removal tool according to claim 1 or 2, a connecting means for connecting a rod is provided at the other end of the tool body. [Effects of the Invention]

[0011] According to the invention described in claim 1, when the opening / closing body is closed and its free end is held by the stopper, the device body is pushed through (pushed into) the nest, which releases the stopper from holding the free end of the opening / closing body, and the opening / closing body opens. When the device body is pulled in this state, the opening / closing body pulls in the nest, and the nest is removed from the cross arm of the utility pole, etc. In this way, nests can be easily removed with just the simple operation and movement of pushing (penetrating) and pulling the device body. This significantly reduces the effort and time required to remove nests.

[0012] According to the invention of claim 2, the opening / closing body is simply made up of a plurality of rod-shaped open / close bars, so it can be easily constructed and manufactured. Moreover, when the opening / closing body is open, the plurality of open / close bars extend radially from the device body as the center, so the opening / closing body can stably pull in the entire nest, that is, it can be stably removed.

[0013] According to the invention described in claim 3, one end of the tool body is sharp, so that the tool body can be easily penetrated into the cavity regardless of the state of the cavity (whatever the cavity may be), making it possible to easily remove the cavity.

[0014] According to the invention described in claim 4, a connecting means is provided at the other end of the tool body, so that by connecting a rod to the tool body depending on the distance between the nest and the worker and the working environment, it is possible to easily remove the nest even from a distance. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing a state in which the opening / closing body of a nest removal tool according to an embodiment of the present invention is closed. [Figure 2] 2 is a front view showing the state in which the opening / closing body of the nest remover of FIG. 1 is open. FIG. [Figure 3] 2 is a schematic diagram showing a state in which the open-close bars of the nest remover of FIG. 1 are extended in a substantially radial pattern. FIG. [Figure 4] 2 is a cross-sectional view showing a stopper of the nest remover of FIG. 1. FIG. [Figure 5]1 is a front view showing a common operating rod according to an embodiment of the present invention; [Figure 6] 2 is a schematic diagram showing the nest removal tool of FIG. 1 in a state before being pushed into the bird's nest. FIG. [Figure 7] 7 is a schematic view showing the nest removal tool of FIG. 1 being pushed into a bird's nest, following FIG. 6. FIG. [Figure 8] 8 is a schematic view showing the nest remover of FIG. 1 in an open state, following FIG. 7. FIG. [Figure 9] 9 is a schematic diagram showing the state after FIG. 8 where a bird's nest is being pulled up by the nest removal tool of FIG. 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] The present invention will be described below based on the illustrated embodiments.

[0017] Fig. 1 is a front view showing a state in which the opening / closing body 3 of the nest removal tool 1 according to an embodiment of the present invention is closed, and Fig. 2 is a front view showing a state in which the opening / closing body 3 of the nest removal tool 1 is open. This nest removal tool 1 is an instrument for removing nests that have been built in the air above the cross arm of a utility pole, and the nests to be removed are primarily bird nests, but may also be nests of other birds and animals.

[0018] This nest removal tool 1 mainly comprises a tool body 2, an opening / closing body 3, a stopper 4, and a connector (connecting means) 5.

[0019] The instrument body 2 is rod-shaped and has, in order from one end, a pointed portion 21, a rectangular column portion 22, a cylindrical portion 23, and a first connecting portion 24 arranged coaxially and connected together. The pointed portion 21 is made of an electrically insulating material, and one end (free end) is formed to be pointed in a conical shape, while the other end is formed to be cylindrical.

[0020] The rectangular pillar portion 22 is made of an electrically insulating material and is a rectangular pillar body with a substantially square cross section, and a first restricting pin 25 for restricting the rotation of the open-close bars 31, which will be described later, is disposed approximately in the center of the longitudinal direction of each of the four faces. The cross section of this rectangular pillar portion 22 is smaller than the cross section of the other end (cylinder) of the tip portion 21, so that, as shown in FIG. 1, when the four open-close bars 31, which will be described later, extend along the rectangular pillar portion 22 and are viewed from one end of the tip portion 21, the four open-close bars 31 do not protrude from the tip portion 21. This makes it easier to insert the device main body 2 from the tip portion 21 into the nest.

[0021] The cylindrical portion 23 is made of metal (for example, aluminum alloy) and is a round rod with a circular cross section, and is provided with a plurality of second restriction pins 26 on the side of the first connection portion 24 for restricting the sliding (movement) of the stopper 4. The diameter of the cross section of the cylindrical portion 23 is set to be the same dimension as the length of the diagonal of the cross section of the rectangular column portion 22.

[0022] The first connecting part 24 is a connector for connecting the connector 5, and is detachably connected to a second connecting part 53 of the connector 5, which will be described later. Specifically, in this embodiment, the first connecting part 24 is cylindrical and includes a ball that can freely move in and out of its inner wall surface. When the cylindrical second connecting part 53 is inserted, the ball fits into a groove formed on the outer periphery of the second connecting part 53 to connect the first connecting part 24. When the second connecting part 53 is pulled, the ball comes out of the groove, and the second connecting part 53 is removed from the first connecting part 24. Note that the connection structure between the first connecting part 24 and the connector 5 is not limited to the above structure and may be any other structure. Furthermore, the device main body 2 and the connector 5 may be integrally configured.

[0023] The opening / closing body 3 has a base end connected to one end of the device body 2, and can be opened and closed freely with the base end as the base point, and in the closed state it extends in a crawling manner from one end of the device body 2 to the other end, and in the open state it extends from one end of the device body 2 in a direction approximately perpendicular to the device body 2. In this embodiment, it is made up of four rod-shaped opening / closing bars 31, and when the opening / closing body 3 is in the open state, the four opening / closing bars 31 extend approximately radially from the device body 2 as the center, as shown in Figure 3.

[0024] That is, the open-close bar 31 is a long, thin, plate-like (strip-like) bar body, with an electrically insulating coating applied to a metal base material. One end (base end) of this open-close bar 31 is rotatably connected to one end side (pointed end 21 side) of each face of the prismatic portion 22 by screws 32. Here, the open-close bar 31 is attached so that its flat surface is aligned with each face of the prismatic portion 22.

[0025] When each open-close bar 31 is rotated toward the rectangular pillar portion 22 (the other end of the fixture body 2), it strikes the first regulating pin 25, causing each open-close bar 31 to extend from one end of the rectangular pillar portion 22 toward the other end, closing the open-close body 3, as shown in Fig. 1. On the other hand, when each open-close bar 31 is rotated toward the tip end 21 (one end of the fixture body 2), it strikes the other end (cylinder) of the tip end 21, causing the bars to extend from one end of the fixture body 2 toward the substantially vertical direction of the fixture body 2, generally radially from the fixture body 2 as the center, opening the open-close body 3, as shown in Figs. 2 and 3. The length of the open-close bars 31 is set so that they can reliably remove typical nests and do not interfere with surrounding objects such as utility pole cross arms.

[0026] The stopper 4 is attached to the device body 2 and is movable in the longitudinal direction of the device body 2, and is capable of holding the free end of the opening-closing body 3 when the opening-closing body 3 is closed. That is, the stopper 4 is a substantially cylindrical body made of an electrically insulating material, and as shown in Fig. 4, a first small-diameter insertion hole 41 and a second large-diameter insertion hole 42 are formed coaxially.

[0027] The diameter of the first insertion hole 41 is formed to be slightly larger than the outer diameter of the cylindrical portion 23 of the instrument body 2, and the stopper 4 is attached to the instrument body 2 so that the prismatic portion 22 and the cylindrical portion 23 pass through it. Here, as described above, the length of the diagonal of the cross section of the prismatic portion 22 and the outer diameter of the cylindrical portion 23 are set to the same dimension, so that the stopper 4 can slide smoothly between the prismatic portion 22 and the cylindrical portion 23 without any play.

[0028] The diameter of the second insertion hole 42 is set so that the other end portions (free end portions) of the four open-close bars 31 can be inserted into the second insertion hole 42 when the four open-close bars 31 are extended along the rectangular column portion 22 as described above. As shown in Fig. 1, by inserting the other end portions of the four open-close bars 31 into the second insertion hole 42, the free end portions of the open-close body 3 are held, and the closed state of the open-close body 3 is held and maintained. On the other hand, when the stopper 4 is slid toward the column portion 23 (the other end side of the appliance body 2) in this state, the holding of the open-close body 3 is released, and the open-close body 3 opens, as shown in Fig. 2.

[0029] The connector 5 is for connecting a rod to the other end of the device body 2, and in this embodiment, is designed to be able to connect a common operating rod 100 as shown in Fig. 5. That is, it comprises an attachment part 51 for connecting the common operating rod 100, the second connection part 53 described above, and an intermediate part 52 that coaxially connects the attachment part 51 and the second connection part 53.

[0030] First, the common operating rod 100 is an operating rod used for work by the indirect live-line method in energized electric power equipment. As shown in Fig. 5, this common operating rod 100 has a rod-shaped main body 101 at one end thereof, with a cylindrical tip 102 provided on one side thereof, and this tip 102 has engaging protrusions 103 on both the left and right sides thereof centered on the axis. Furthermore, a male screw 102a is formed on the main body 101 on the side of the tip 102, and a fixing screw 104 is threaded into this male screw 102a.

[0031] As shown in FIG. 2, the mounting portion 51 of the common operating rod 100 has a cap-like (covered cylindrical) shape into which the tip portion 102 of the common operating rod 100 fits, and has a pair of opposing mounting grooves 51A penetrating from the outer surface to the inner surface. The mounting grooves 51A have an introduction groove 51a, a horizontal groove 51b, and an engagement groove 51c. The introduction groove 51a extends a predetermined length from the free end surface 51d of the mounting portion 51 along the axis. The horizontal groove 51b extends horizontally in the left-right direction from the end of the introduction groove 51a. The engagement grooves 51c extend a predetermined length from both ends of the horizontal groove 51b toward the free end surface 51d along the axis. The widths of the introduction grooves 51a, horizontal groove 51b, and engagement groove 51c are set so that the engagement protrusions 103 of the operating rod body 100 can enter.

[0032] Then, the engaging protrusion 103 is inserted into the introduction groove 51a and moved horizontally along the horizontal groove 51b until it is positioned at the bottom of the engaging groove 51c, and the fixing screw 104 is tightened. This connects the mounting part 51, i.e., the connector 5, to the common operating rod 100 without any play around the axis or in the axial direction. At this time, the nest removal tool 1 and the common operating rod 100 are connected coaxially.

[0033] The nest removal tool 1 having such a configuration can perform nest removal work by the indirect live-line method, either alone or with the common operating rod 100 connected.

[0034] Next, the action and operation of the nest removal tool 1 configured as above and the method for removing a nest using the nest removal tool 1 will be described with reference to Figures 6 to 9. Here, the case where the nest to be removed is a bird's nest S built in an arm U of a utility pole will be described.

[0035] First, as shown in Fig. 6, with the free end of the opening / closing body 3 held by the stopper 4, the tip side (pointed end 21 side) of the nest removal tool 1 is positioned above the bird's nest S. Next, as shown in Fig. 7, the tip side of the tool body 2 of the nest removal tool 1 is pushed into the bird's nest S, and as shown in Fig. 8, the tip side of the tool body 2 is penetrated into the bird's nest S. Here, the free end of the opening / closing body 3 is penetrated until it protrudes from the bird's nest S.

[0036] At this time, the stopper 4 is blocked by the bird's nest S and stops midway along the bird's nest S, then moves to the other end of the device body 2. This releases the stopper 4 from holding the free end of the opening-closing body 3, and the opening-closing body 3 (opening-closing rod 31) opens due to its own weight. In other words, the open-closing rod 31 is arranged so that the opening-closing body 3 opens in this manner, and the holding strength of the stopper 4 is set. Next, as shown in Figure 9, when the nest removal tool 1 is pulled up with the opening-closing body 3 open, the opening-closing body 3 pushes up the bird's nest S, and the bird's nest S is removed from the cross arm U of the utility pole.

[0037] As described above, with this nest removal tool 1, it is possible to easily remove a nest S with just a simple operation and movement: pushing the tool body 2, i.e., the nest removal tool 1, toward (through) the bird's nest S and pulling it. In particular, even an unskilled person who is not accustomed to removal work can easily remove a nest S. This makes it possible to significantly reduce the effort and time required to remove a nest S.

[0038] Also, the opening / closing body 3 can be easily constructed and manufactured because it is simply made up of a plurality of rod-shaped open / close bars 31. Moreover, when the opening / closing body 3 is open, the four open / close bars 31 extend radially from the device main body 2 at the center, so the entire nest S can be stably pulled up by the opening / closing body 3, that is, it can be stably removed.

[0039] Furthermore, since one end (pointed end 21) of the tool body 2 is sharp, the tool body 2 can be easily penetrated into the nest S regardless of the state of the nest S (whatever the nest S), and the nest S can be easily removed.

[0040] In addition, since a connector 5 is provided at the other end of the device body 2, by connecting a common operating rod 100 to the device body 2 depending on the distance between the nest S and the worker and the work environment, it becomes possible to easily remove the nest S even from a distance.

[0041] Although the embodiments of the present invention have been described in detail above, the specific configuration is not limited to these embodiments, and design changes that do not deviate from the gist of the present invention are also included in the present invention. For example, in the above embodiment, four open-close bars 31 are provided, but three or fewer or five or more may be provided depending on the size, type, and shape of the nest. Furthermore, although the open-close body 3 is composed of multiple open-close bars 31, the open-close body 3 may be umbrella-shaped or have another structure.

[0042] Furthermore, the free end of the opening / closing body 3 is held by inserting the other end of the open-close rod 31 into the second insertion hole 42 of the stopper 4, but the free end of the opening / closing body 3 may also be held by engaging the other end of the open-close rod 31 with the stopper 4. Also, when the hold of the opening / closing body 3 by the stopper 4 is released, the opening / closing body 3 opens by its own weight, but a spring may be provided to forcibly open the opening / closing body 3. Also, the shared operating rod 100 is detachable from the nest removal tool 1, but the nest removal tool 1 may be a long one that is integrated with the shared operating rod 100. [Explanation of symbols]

[0043] 1. Nest removal tool 2. Device body 21 Point 22 Prismatic section 23 Cylinder 24 First connection 3 Opening and closing body 31 Opening and closing rod 4 Stopper 5 Connector (connection means) 100 Common operation rod (rod) S Bird's Nest

Claims

1. This is a nest removal tool for removing nests that have been built in the air, including the arms of utility poles. A rod-shaped instrument body, an opening / closing body having a base end connected to one end side of the device body, which can be opened and closed with the base end as a base point, and which extends in a crawling manner from one end side of the device body to the other end side in a closed state, and which extends from the one end side of the device body in a direction substantially perpendicular to the device body in an open state; a stopper attached to the device body, movable in the longitudinal direction of the device body, and capable of holding a free end of the opening / closing body in a closed state; When the tool body is passed through the nest while the stopper holds the free end of the opening / closing body, the stopper moves to the other end side of the tool body, the holding by the stopper is released, and the opening / closing body opens. A nest removal tool characterized by:

2. The opening-closing body is composed of a plurality of rod-shaped opening-closing bars, and when the opening-closing body is in an open state, the plurality of opening-closing bars extend substantially radially from the device main body as a center.

2. The nest removal tool according to claim 1.

3. One end of the instrument body is formed sharply.

3. The nest removal tool according to claim 1 or 2.

4. A connecting means for connecting a rod material is provided at the other end of the tool body.

3. The nest removal tool according to claim 1 or 2.

Images