Nest removal tool

Abstract

To provide a nest removal tool with a tip that can reliably remove nests from above. [Solution] A tip tool 1 for removing nests, which is attached to the tip of a shared operating rod 100 in an indirect live-line construction method, comprises a rotatable connector 2 connected to the tip of the shared operating rod 100, a pinion 3 that rotates in conjunction with the rotation of the connector 2, a first rack 41 and a second rack 42 that mesh with the pinion 3 and are arranged opposite each other with the pinion 3 in between, and a clamping body 5 provided at the ends of the first rack 41 and the second rack 42 that extend outward and extend toward the side away from the connector 2, wherein by rotating the shared operating rod 100 around its axis while the shared operating rod 100 is connected to the connector 2, the clamping body 5 can move back and forth in a direction substantially perpendicular to the longitudinal direction of the shared operating rod 100.

Description

Technical Field

[0001] The present invention relates to a tip tool for nest removal for removing a nest built on an arm of a utility pole or the like by an indirect live-line method.

Background Art

[0002] For example, when crows build a nest on the arm of a utility pole, there is a risk that the nest may come into contact with electric wires or the like and cause a power outage. Therefore, conventionally, the presence or absence of nests has been regularly inspected, and when a nest is found, the nest has been removed. At this time, for example, the nest is crushed with an insulating yatco and removed little by little, which requires time and effort and places a heavy burden on the operator.

[0003] Also, a gripping device that can grip and remove a nest is known (see, for example, Patent Document 1). In this gripping device, an operating rod is connected to a joint provided on one end side of a male screw member, and when the operating rod is rotated around its axis, the male screw member rotates and two rotating members move forward and backward along the longitudinal direction of the operating rod. Thereby, the nest can be gripped and removed by a claw-shaped portion provided at the end of the rotating member.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, nests are built in various locations and in various conditions, and sometimes the sides of the nests are blocked by power facilities, houses, etc. In contrast, with the gripping device described in Patent Document 1, the rotating member and claw-shaped part move back and forth only along the longitudinal direction of the operating rod, so it is necessary to approach the nest from the side, and if the side of the nest is blocked, it is not possible to remove the nest. Moreover, the long operating rod with the gripping device attached to the tip must be operated while extended horizontally, which places a heavy burden on the worker.

[0006] Therefore, the present invention aims to provide a tip tool for removing nests that can reliably remove them from above. [Means for solving the problem]

[0007] To solve the above problems, the invention of claim 1 is a tip tool for removing nests attached to the tip of a shared operating rod in an indirect live-line construction method, comprising: a rotatable connecting part connected to the tip of the shared operating rod; a pinion that rotates in conjunction with the rotation of the connecting part; a first rack and a second rack that mesh with the pinion and are arranged opposite each other with the pinion in between; and a clamping body provided at the ends of the first rack and the second rack that extend outward and extend away from the connecting part, wherein the clamping body can move forward and backward in a direction substantially perpendicular to the longitudinal direction of the shared operating rod by rotating the shared operating rod around its axis while the shared operating rod is connected to the connecting part.

[0008] The invention of claim 2 is characterized in that, in the tip tool for removing nests described in claim 1, a bottom support body is provided on the free end side of the clamping body, which is movable back and forth toward the pinion side.

[0009] The invention of claim 3 is a tip tool for removing nests according to claim 1 or 2, wherein the connecting portion and the pinion are connected via a joint, and the connecting portion is connected by the joint The pinion is characterized by being rotatable around an axis perpendicular to the axis of the pinion. [Effects of the Invention]

[0010] According to the invention described in claim 1, when the shared operating rod is connected to the connecting part and rotated around the axis, the pinion rotates, causing the first rack and the second rack to move linearly in opposite directions, and the gripping body moves back and forth. At this time, since the gripping body can move back and forth in a direction substantially perpendicular to the longitudinal direction of the shared operating rod, the shared operating rod can be operated from above the nest, and the nest can be gripped with the gripping body. As a result, even if the sides of the nest are blocked, the nest can be reliably removed from above. Moreover, since the operation can be performed with the shared operating rod lowered, the burden on the worker can be reduced.

[0011] According to the invention described in claim 2, since the clamping body is provided with a bottom support body that can move back and forth on the free end side, the bottom support body can be advanced toward the nest side (pinion side) while the nest is being gripped by the clamping body, thereby supporting the bottom of the nest with the bottom support body. As a result, it is possible to remove the nest properly and all at once without collapsing it.

[0012] According to the invention described in claim 3, since the connecting part, or common operating rod, is rotatable around an axis perpendicular to the axis of the pinion, the common operating rod can be rotated according to the state of the nest and the surrounding environment, and the nest can be approached from the appropriate direction, making it possible to remove the nest reliably and easily. [Brief explanation of the drawing]

[0013] [Figure 1] This is a schematic diagram showing a tip tool for removing nests according to an embodiment of the present invention. [Figure 2] Figure 1 shows the connector (a) of the tip tool for removing nests and a front view (b) of the shared operating rod connected to this connector. [Figure 3] Figure 1 shows a schematic plan view (a) and a schematic front view (b) of the tip tool for removing nests, illustrating the configuration of the rack and pinion. [Figure 4] Figure 1 is a schematic diagram showing the clamping body of the tip tool used for removing nests. [Figure 5]It is a diagram showing the configuration of the joint in the tip tool for nest removal of FIG. 1. [Figure 6] It is a schematic diagram showing the first step of removing the nest with the tip tool for nest removal of FIG. 1. [Figure 7] It is a schematic diagram showing the second step of removing the nest with the tip tool for nest removal of FIG. 1. [Figure 8] It is a schematic diagram showing the third step of removing the nest with the tip tool for nest removal of FIG. 1.

Mode for Carrying Out the Invention

[0014] Hereinafter, this invention will be described based on the illustrated embodiments.

[0015] ​​​​​​​​​​​​​​​

[0019] For such a shared operating rod 100, the connector 2 has a cap shape (cylindrical shape) into which the tip 102 of the shared operating rod 100 fits, and a pair of opposing mounting grooves 2A penetrating from the outer peripheral surface to the inner peripheral surface are formed. This mounting groove 2A has an introduction groove 2a, a horizontal groove 2b, and an engagement groove 2c. The introduction groove 2a extends along the axis from the free end surface 2d of the connector 2 for a predetermined length. The horizontal groove 2b extends horizontally in the left - right direction from the end of the introduction groove 2a. The engagement groove 2c extends along the axis from both ends of the horizontal groove 2b toward the free end surface 2d side for a predetermined length. The widths of such an introduction groove 2a, a horizontal groove 2b, and an engagement groove 2c are set so that the engagement protrusion 103 of the operating rod body 100 can enter.

[0020] Then, the engagement protrusion 103 is inserted into the introduction groove 2a, horizontally moved along the horizontal groove 2b, and the fixing screw 104 is tightened in a state where it is positioned at the bottom of the engagement groove 2c. Thereby, the connector 2 is connected to the shared operating rod 100 without play around the axis and in the axial direction, and by rotating the shared operating rod 100 around the axis, the connector 2 also rotates around the axis.

[0021] The pinion 3 is a spur gear that rotates as the connector 2 rotates. In this embodiment, the rotation of the connector 2 is transmitted via a joint 7 described later. This pinion 3 is rotatably disposed within a box - shaped casing 31 that is open on both sides. Also, within the casing 31, guide rails (not shown) for guiding the later - described racks 411, 421 and arm bars 412, 422 in the longitudinal direction are provided.

[0022] As shown in Figure 3, arms 41 and 42 are arranged to the left and right of the pinion 3 and are arms that can move forward and backward relative to the pinion 3. The first arm 41 has a first rack 411 that meshes with the pinion 3 and a first arm bar 412 arranged parallel to the first rack 411. Similarly, the second arm 42 has a second rack 421 that meshes with the pinion 3 and a second arm bar 422 arranged parallel to the second rack 421.

[0023] Here, the first rack 411 and the second rack 421 are arranged opposite each other with the pinion 3 in between, and they mesh with the pinion 3 at different heights (staggered). That is, in this embodiment, the first rack 411 meshes with the upper part of the pinion 3 in the axial direction, and the second rack 421 meshes with the lower part of the pinion 3 in the axial direction, so when the pinion 3 rotates, the first rack 411 and the second rack 421 move in a straight line in opposite directions to each other. For example, when the pinion 3 rotates counterclockwise, the first arm 41 and the second arm 42 advance towards the pinion 3 (approaching each other), and when the pinion 3 rotates clockwise, the first arm 41 and the second arm 42 retract away from the pinion 3 (separating each other).

[0024] The clamping body 5 is provided at the ends of the first rack 411 and the second rack 421 that extend outward (the ends opposite the pinion 3), and is a clamping member that extends toward the side opposite the connector 2. The structure and shape of this clamping body 5 can be anything as long as it can clamp and grip the void S, but in this embodiment it has the following structure and shape.

[0025] In other words, as shown in Figure 4, the overall structure is roughly fence-like, with two horizontal clamping bars 51 extending horizontally arranged opposite each other, and multiple vertical clamping bars 52 extending vertically arranged between these two horizontal clamping bars 51. The horizontal clamping bars 51 are connected to the free ends (ends extending outward relative to the pinion 3) of the first rack 411 and the first arm bar 412, and similarly, the horizontal clamping bars 51 are connected to the free ends of the second rack 421 and the second arm bar 422. This allows the two clamping bodies 5 to extend downward (towards the side opposite the connector 2) when the common operating rod 100 is connected to the connector 2 and the nest removal tip tool 1 is facing downward. In addition, the vertical clamping bars 52 are provided with multiple clamping claws 52a that protrude toward the pinion 3 side (nest S side).

[0026] In this way, a clamping body 5 is provided on each of the arms 41 and 42, and with the common operating rod 100 connected to the connector 2, the arms 41 and 42 extend in a direction substantially perpendicular to the longitudinal direction of the common operating rod 100. By rotating the common operating rod 100 around its axis, the arms 41 and 42 and the clamping bodies 5 can move forward and backward relative to each other in a direction substantially perpendicular to the longitudinal direction of the common operating rod 100, as described above.

[0027] The bottom support member 6 is positioned on the free end side of the clamping body 5 and is a support member that can move back and forth relative to the pinion 3 side (nest building S side). Specifically, it is positioned on the clamping horizontal bar 51 on the side opposite the arms 41 and 42 of the clamping body 5 and is a member that supports the bottom of the nest S when the nest S is clamped by the clamping body 5. More specifically, multiple cylindrical guide tubes 61 are positioned on the clamping horizontal bar 51 on the side opposite the arms 41 and 42, and a rod-shaped support bar 62 with a pointed tip is inserted into each guide tube 61. Before the nest S is clamped by the clamping body 5, the support bar 62 is moved back and forth from the pinion 3 side, and when the nest S is clamped by the clamping body 5, the support bar 62 is moved forward and forth towards the pinion 3 side to support the bottom of the nest S. Here, a mechanism (for example, a stopper) is provided to prevent the support bar 62 from coming out of the guide cylinder 61, and multiple support bars 62 may be connected to each other.

[0028] Joint 7 is a universal joint connecting connector 2 and pinion 3, and connector 2 is rotatable around an axis perpendicular to the axis of pinion 3 by joint 7. That is, as shown in Figure 5, joint 7 is formed by overlapping the ends of a roughly C-shaped first frame 71 and the ends of a roughly C-shaped second frame 72 to form an annular body, and a second rotating shaft 73 rotatably passes through the overlapping ends. A second bevel gear 73G is disposed inside the annular body of this second rotating shaft 73 (inside frames 71 and 72). Here, the second rotating shaft 73 extends in a direction approximately perpendicular to the axis of pinion 3.

[0029] Furthermore, a first rotating shaft 74 rotatably passes through the center of the first frame 71, and a first bevel gear 74G that meshes with the second bevel gear 73G is disposed inside the annular body of the first rotating shaft 74, and a connector 2 is coaxially disposed on the outside of the annular body of the first rotating shaft 74 (outside the first frame 71). In addition, a third rotating shaft 75 rotatably passes through the center of the second frame 72, and a third bevel gear 75G that meshes with the second bevel gear 73G is disposed inside the annular body of the third rotating shaft 75, and a pinion 3 is coaxially disposed on the outside of the annular body of the third rotating shaft 75 (outside the second frame 72).

[0030] The connector 2 and the pinion 3 are connected via such a joint 7, and when the shared operating rod 100 is rotated around its axis, the connector 2 and the first bevel gear 74G rotate. The rotation of the first bevel gear 74G is then transmitted to the third bevel gear 75G via the second bevel gear 73G, causing the pinion 3 to rotate. Furthermore, the first frame 71 is rotatable around the second rotation axis 73 relative to the second frame 72, thereby allowing the connector 2 to rotate around an axis perpendicular to the axis of the pinion 3. Moreover, since the second frame 72 is rotatable around the axis of the pinion 3 (around the third rotation axis 75), the connector 2 can rotate around any axis perpendicular to the axis of the pinion 3. .

[0031] Next, we will explain the operation and function of the nest removal tool 1 with this configuration, as well as the method of removing nests using the nest removal tool 1.

[0032] First, as shown in Figure 6, the shared operating rod 100 is connected to the connector 2, and the support bar 62 is retracted from the pinion 3 side. In this state, the nest removal tip tool 1 is pointed downwards and approached from above so that the nest S is positioned between the clamping bodies 5. Next, as shown in Figure 7, when the shared operating rod 100 is rotated in one direction, the clamping bodies 5 move closer to each other as described above, and the nest S is clamped and gripped by the clamping bodies 5. Subsequently, as shown in Figure 8, when the support bar 62 is advanced towards the pinion 3 side using another shared operating rod 100, the bottom of the nest S is supported by the support bar 62. In this state, the nest S is lifted and removed, and then the support bar 62 is retracted from the pinion 3 side, and the shared operating rod 100 is rotated in the other direction, so that the clamping bodies 5 separate from each other and the nest S can be removed.

[0033] As described above, with this nest removal tip tool 1, when the shared operating rod 100 is connected to the connector 2 and rotated around its axis, the pinion 3 rotates, causing the first rack 411 and the second rack 421 to move in opposite directions, and the gripping body 5 moves closer to or further away from each other. At this time, since the gripping body 5 can move forward and backward in a direction substantially perpendicular to the longitudinal direction of the shared operating rod 100, the shared operating rod 100 can be operated from above the nest S, and the nest S can be gripped by the gripping body 5. As a result, even if the sides of the nest S are blocked, the nest S can be reliably removed from above. Moreover, since the operation can be performed with the shared operating rod 100 lowered, the burden on the worker can be reduced.

[0034] Furthermore, since the clamping body 5 is equipped with a support bar 62 that can move back and forth on its free end, the bottom of the void S can be supported by the support bar 62 by moving the support bar 62 toward the void S (pinion 3 side) while the void S is gripped by the clamping body 5. This makes it possible to remove the void S properly and all at once without collapsing it.

[0035] Furthermore, since the connector 2, or shared operating rod 100, is rotatable around an axis perpendicular to the axis of the pinion 3, the shared operating rod 100 can be rotated according to the state of the nest S and the surrounding environment, allowing for a reliable and easy removal of the nest S by approaching it from the appropriate direction.

[0036] Although embodiments of this invention have been described in detail above, the specific configuration is not limited to these embodiments, and any design changes, etc., that do not depart from the gist of this invention are also included. For example, in the above embodiments, arms 41 and 42 are equipped with racks 411 and 421 and arm bars 412 and 422, respectively, but they may be equipped with only racks 411 and 421. Also, a mechanism (for example, a stopper) that restricts the rotation of the first frame 71 and the second frame 72 may be provided. Furthermore, depending on the state of the nest S and the surrounding environment, the connector 2 and the pinion 3 may be directly connected without providing the joint 7. [Explanation of Symbols]

[0037] 1. Tip tool for removing nests 2. Connector (connecting part) 3 pinion 41 First Arm 42 Second Arm 5 Clamping body 6. Base support 7 joints 100 Common control stick S nest

Claims

1. A tip tool for removing nests, which is attached to the tip of a shared operating rod in an indirect live-line construction method, A rotatable connecting part is connected to the tip of the aforementioned shared operating rod, A pinion that rotates in conjunction with the rotation of the aforementioned connecting part, A first rack and a second rack are arranged opposite each other, with the pinion in between, and the pinion is engaged with the pinion. A clamping body is provided at the end of the first rack and the second rack that extends outward, and which extends away from the connecting portion, A tip tool for removing nests, characterized in that, by rotating the common operating rod around its axis while the common operating rod is connected to the connecting part, the clamping body can move forward and backward in a direction substantially perpendicular to the longitudinal direction of the common operating rod.

2. The clamping body is provided with a base support that can move back and forth toward the pinion, on the free end side. The tip tool for removing nests as described in feature 1.

3. The connecting portion and the pinion are connected via a joint. The connecting portion is rotatable around an axis perpendicular to the axis of the pinion by the joint. The tip tool for removing nests according to either claim 1 or 2.

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