JP2016055373A - Bird's nest gripping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bird's nest gripping device capable of accurately gripping a bird's nest with high operability.SOLUTION: The bird's nest gripping device includes an input shaft 10 coupled to a biaxial rotation operation rod, a mechanism part 20 for receiving the rotational force of the input shaft 10, three shafts 31, 32, and 33 driven by the mechanical part 20 to rotate, screwing members 40 respectively screwed with the input shaft 10 and the three shafts 31, 32, and 33 and configured to be movable so that they can be moved closer to or away from each other in synchronization along the shafts 10, 31, 32, and 33 by the rotation of the shafts 10, 31, 32, and 33, and a gripping claw 50 extending from each of the screwing members 40, and the input shaft 10 and the three shafts 31, 32, and 33 are radially arranged around the mechanism part 20.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a bird nest gripping device for removing a bird's nest formed at a high place such as an upper part of a utility pole.

  Birds such as crows sometimes nest in high places such as the upper part of telephone 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, various devices for removing a bird's nest formed at a high place such as a utility pole have been provided (see, for example, Patent Document 1).

  As shown in FIGS. 4 and 5, a bird nest gripping device as an example is attached to a pair of rotating members 110 that rotate about a rotating shaft 101 and the distal ends of the rotating members 110. A claw-shaped portion 120, a male screw member 130 that opens and closes the pair of rotating members 110, and a joint 140 attached to a base end portion of the male screw member 130.

  The rotating member 110 is a rotation that connects the first arm portion 111 having a short shape, the second arm portion 112 having an L shape, and the distal end portion of the first arm portion 111 and the proximal end portion of the second arm portion 112. A shaft 113 is provided. Further, the base end portions of the first arm portions 111 are connected by the rotation shaft 101, the male screw member 130 passes through the rotation shaft 113 of the rotation member 110, and the male screw member 130 rotates in the circumferential direction. Both the first arm portions 111 are opened and closed between a state where they are approaching and a state where they are apart from each other, and both the second arm portions 112 are switched between a horizontal posture and an inclined posture.

  The claw-shaped portion 120 includes a support plate 121 that slides along the second arm portion 112 of the rotating member 110 and a scratching claw 122 that extends downward from the tip of the support plate 121. The scratching claws 122 of the claw-shaped portion 120 form a pair, and are converted into a downwardly opened state and an inwardly closed state in conjunction with the posture change of the rotating member 110. Further, the support plate 121 of the claw-shaped portion 120 slides along the second arm portion 112 of the rotating member 110 so that the distance between the pair of scratching claws 122 can be changed.

  The joint 140 is connected to the tip of an insulating operation rod (not shown). An operator grips the base end of the insulation operation rod, and attaches the bird nest gripping device attached to the tip of the insulation operation rod from the top of the bird's nest formed on the top of the power pole to the bird's nest. Approach.

  Initially, the scratching claw 122 is in an open state as shown in FIG. 4 and is inserted outside the bird's nest. Then, by rotating the insulating operation rod in the circumferential direction, the male screw member 130 is rotated in the circumferential direction, and the scratching claw 122 is closed as shown in FIG. it can. Then, the bird's nest is removed from the upper part of the utility pole by lifting and pulling the bird's nest gripping device.

JP 2006-26772 A

  The gripping device for bird's nest shown in FIG. 4 and FIG. 5 has good operability because the scratching claw 122 is opened and closed by rotating the insulating operation rod in the circumferential direction. Yes.

  However, this bird nest gripping device grips the pair of scratching claws 122 so that the bird's nest is held from both sides. Therefore, in this bird nest gripping device, the scratching claw 122 grips the bird's nest in an unstable state, so that the bird's nest is dropped from the scratching nail 122 or collapsed. There was a thing.

  Accordingly, an object of the present invention is to provide a bird nest gripping device which is excellent in operability and can accurately grip a bird's nest.

  A bird's nest gripping device according to the present invention includes an input shaft coupled to a biaxial rotating operation rod, a mechanism portion that receives the rotational force of the input shaft, and two that rotate by receiving the drive of the mechanism portion. Screw members that are screwed to the shaft, the input shaft, and the two or more shafts, and that can be moved along the shaft so as to be spaced apart and close to each other in synchronization with the rotation of the shaft. And a gripping claw extending from each screwing member, wherein the input shaft and the two or more shafts are radially arranged around the mechanism portion.

  According to this bird's nest gripping device, by simply rotating the input shaft, two or more shafts are rotated by the mechanism that receives the rotational force of the input shaft, and the input shaft and the two or more shafts Each screw member to be screwed to each other can be moved in the axial direction so as to be separated and approached in synchronization. As a result, the interval between the gripping claws extending from the screwing members can be changed from a state where the interval between the claws is wider than the outer diameter of the bird's nest to a narrowly close state where the bird's nest is gripped. Can be accurately grasped from three or more directions.

  Here, as one aspect of the bird's nest gripping device according to the present invention, the gripping claw is a combination of an inner gripping claw and an outer gripping claw, and the inner gripping claw is more than the outer gripping claw. A long structure can be adopted.

  According to this bird's nest gripping device, when the bird's nest is in a form having a bowl-shaped main body part and a hook-shaped outer edge part protruding outward from the periphery of the main body part, The inner gripping claws can support the bottom portion of the main body, and the outer gripping claws can support the outer edge portion.

  As another aspect of the bird's nest gripping device according to the present invention, the input shaft, the mechanism, two or more shafts and a screwing member are housed, and the gripping claw has an opening that can be moved. A configuration including a casing can be employed.

  According to this bird's nest gripping device, the input shaft, the mechanism portion, the two or more shafts and the screwing member are housed in the casing, so that it is not only easy to carry but also the input shaft, the mechanism portion. The two or more shafts and the screwing member can be protected from external force.

  In this case, the casing can employ a configuration including a regulating unit that regulates rotation of the screwing member. According to this bird's nest gripping device, the casing is provided with the restricting means, whereby the configuration of the entire device can be simplified.

  Further, as yet another aspect of the bird nest gripping device according to the present invention, the two or more shafts are composed of three shafts arranged in three directions at intervals of 90 °, and the middle shaft is The structure arrange | positioned on the extension line | wire of the said input shaft is employable.

  According to this bird's nest gripping device, the input shaft and the three shafts are arranged at equal intervals, and the screwing members and the gripping claws screwed to the respective shafts are also arranged at equal intervals. Accordingly, the gripping claws are arranged in equal four directions, and the bird's nest can be gripped with a good balance.

  In this case, the mechanism portion is connected to the first bevel gear connected to the input shaft, the second bevel gear connected to one shaft in a direction intersecting the input shaft, and the middle shaft. A third bevel gear, wherein the second bevel gear meshes with the first bevel gear and the third bevel gear, and one axis and the other axis intersect each other with respect to the input shaft. A connected configuration can be employed.

  According to this bird's nest gripping device, when the first bevel gear connected to the input shaft rotates, the second bevel gear engaged with the first bevel gear rotates and is connected to the second bevel gear. The center shaft connected to the third bevel gear is rotated by rotating the other shaft connected to the shaft and the third bevel gear meshing with the second bevel gear. Rotates. Further, in this bird's nest gripping device, the second bevel gear meshes with the first bevel gear and the third bevel gear. The posture can be changed between a bent posture and a straight posture.

  ADVANTAGE OF THE INVENTION According to this invention, it is excellent in operativity and can provide the holding apparatus for bird nests which can hold | grasp a bird's nest exactly.

FIG. 1 is a cross-sectional bottom view showing an embodiment of a bird's nest gripping device according to the present invention. FIG. 2 is a cross-sectional side view showing an embodiment of a bird's nest gripping device according to the present invention. FIG. 3 is a schematic side view showing a use state of an embodiment of the bird nest gripping apparatus according to the present invention. FIG. 4 is a front view showing an example of a conventional gripping device for a bird's nest. FIG. 5 is a front view showing an example of a conventional gripping device for a bird's nest.

  An embodiment of a bird's nest gripping device (hereinafter referred to as “gripping device”) according to the present invention will be described with reference to FIGS. 1 to 3. This gripping device is a bird's nest 1 made of two arm brackets 2 supported by a utility pole (not shown), and is fitted between the two arm brackets 2 to form a bowl shape. It is possible to accurately grasp the bird's nest 1 having the recessed main body portion 1a and the hook-shaped outer edge portion 1b that protrudes outward from the peripheral edge of the main body portion 1a and is supported by the two arms 2. It is configured.

  The gripping device includes an input shaft 10 connected to the insulating operation rod 3, a mechanism unit 20 that receives the rotational force of the input shaft 10, and two or more shafts that rotate by receiving the drive of the mechanism unit 20 (this In the embodiment, it will be described as three axes: “first cross axis 31 that is one axis”, “second cross axis 32 that is the other axis”, and “extension axis 33 that is the middle axis”). A threaded member 40 that is threadedly engaged with the input shaft 10 and the three shafts 31, 32, and 33. The screwing member 40 is movable along the 10, 31, 32, and 33, and the gripping claws 50 are extended from the screwing members 40.

  The input shaft 10, the first intersecting shaft 31, the second intersecting shaft 32, and the extension shaft 33 are arranged radially with the mechanism portion 20 as the center. That is, the angle between the input shaft 10 and the first intersecting axis 31, the angle between the input shaft 10 and the second intersecting axis 32, the angle between the first intersecting axis 31 and the extension shaft 33, and the second intersecting axis 32 and the extension shaft 33. Are all 90 °.

  Accordingly, the extension shaft 33 is a middle axis between the first intersecting axis 31 and the second intersecting axis 32, and is disposed on the extension line of the input shaft 10. The first intersecting axis 31 and the second intersecting axis 32 are axes that intersect the input shaft 10 and are connected to each other. However, the first cross axis 31 and the second cross axis 32 may be integrated.

  And the external thread is formed in the outer peripheral surface of the input shaft 10 and the three shafts 31,32,33. The screwing member 40 is a member such as a nut formed with a female screw that is screwed into the male screw, and has a side surface 41 in the same direction as the direction of the female screw.

  The gripping claw 50 extending from the screwing member 40 is a combination of an inner gripping claw 51 and an outer gripping claw 52. The inner gripping claws 51 are formed longer than the outer gripping claws 52 so as to support the bottom side of the main body 1 a of the bird's nest 1. The outer gripping claws 52 are formed shorter than the inner gripping claws 51 so as to support the bottom side of the outer edge 1b of the bird's nest 1.

  The inner gripping claw 51 includes an arm portion 51a protruding inward from the screwing member 40, a leg portion 51b extending downward from the inner end of the arm portion 51a, and an inner portion from the lower end of the leg portion 51b. It has the latching | locking part 51c which protruded in the direction. The outer gripping claw 52 includes a leg portion 52b extending downward from the screwing member 40 and a latching portion 52c protruding inward from the lower end of the leg portion 52b.

  The mechanism unit 20 includes a first bevel gear 21 connected to the input shaft 10, a second bevel gear 22 connected to the first intersecting shaft 31, and a third bevel gear 23 connected to the extension shaft 33. It has. The second bevel gear 22 meshes with the first bevel gear 21 and the second bevel gear 22. The tooth surfaces of each of the bevel gears 21, 22, and 23 have a 45 ° slope with respect to the axis. Further, the extension shaft 33 can be changed in its orientation to a straight posture and a bent posture with the second bevel gear 22 as an axis with respect to the input shaft 10.

  When the rotation of the input shaft 10 in the circumferential direction is clockwise (rightward in FIG. 1), the rotation of the first intersecting shaft 31 in the circumferential direction is counterclockwise (upward in FIG. 1), and the second intersecting axis. The circumferential rotation of 32 is clockwise (upward in FIG. 1), and the circumferential rotation of the extension shaft 33 is clockwise (leftward in FIG. 1).

  Therefore, when the screwing member 40 screwed to the input shaft 10 moves forward / backward, the screwing member 40 screwed to the first intersecting shaft 31, the second intersecting shaft 32, and the extension shaft 33 is synchronized to advance. In order to move backward, for example, when a right-hand thread is cut on the input shaft 10, a left-hand thread is cut on the first cross shaft 31 and a right-hand screw is cut on the second cross shaft 32 and the extension shaft 33. .

  The input shaft 10, the mechanism portion 20, the three shafts 31, 32, 33 and the screwing member 40 are housed in the casing 70. The casing 70 includes an input shaft side cover 70 a that covers the input shaft 10 and the mechanism unit 20, a first cross shaft side cover 70 b that covers the first cross shaft 31, and a second cross shaft side cover 70 c that covers the second cross shaft 32. And an extension shaft side cover 70 d that covers the extension shaft 33 and the mechanism portion 20.

  Each of the covers 70 a to 70 d includes a pair of side plate portions 71, a top plate portion 72 that closes the upper surface of each side plate portion 71, and an end plate portion 73 that closes the distal end portion, and an elongated shape having an opening 77 on the bottom surface. It is formed in a container shape. Since the bottom surfaces of the covers 70 a to 70 d have the openings 77, the gripping claws 50 protrude from the bottom surface of the casing 70 and can move along the respective axes 10, 31, 32, 33.

  Further, the side plate portion 71 is in contact with the side surface 41 of the screwing member 40 and constitutes a restricting means for restricting the rotation of the screwing member 40 around the axis. Each end plate portion 73 is formed with a shaft hole (not numbered) for supporting the input shaft 10 and the three shafts 31, 32, 33.

  In addition, the first connecting portion spanned between the side plate portions 71 facing each other at the intersecting portion where the input shaft side cover 70a covers the mechanism portion 20 and the intersecting portion where the extended shaft side cover 70d covers the mechanism portion 20. 74a and 74d are provided. A second connecting portion 75a and a third connecting portion 76a project from the respective end portions of the first connecting portion 74a of the input shaft side cover 70a toward the extension shaft 33. In addition, a second connecting portion 75d and a third connecting portion 76d project toward the input shaft 10 from each end of the first connecting portion 74d of the extension shaft side cover 70d.

  Then, the second connecting portion 75a and the third connecting portion 76a of the input shaft side cover 70a sandwich the second connecting portion 75d and the third connecting portion 76d of the extension shaft side cover 70d, or not shown. Is the opposite.

  A shaft hole through which the shaft of the first bevel gear 21 or the input shaft 10 passes is formed in the first connecting portion 74a of the input shaft side cover 70a. Further, a shaft hole through which the shaft of the third bevel gear 23 or the extension shaft 33 passes is formed in the first connecting portion 74d of the extension shaft side cover 70d.

  The second connecting portion 75a of the input shaft side cover 70a and the second connecting portion 75d of the extended shaft side cover 70d are shaft holes through which the shaft of the second bevel gear 22 or the shaft of the first intersecting shaft 31 passes. Is formed. A shaft hole through which the shaft of the second intersecting shaft 32 passes is formed in the third connecting portion 76a of the input shaft side cover 70a and the third connecting portion 76d of the extended shaft side cover 70d.

  The base end portion 10 a of the input shaft 10 is formed in a prismatic shape that connects the distal end portions of a biaxial rotating operation rod (hereinafter referred to as “operation rod”) 3. The operating rod 3 includes a cylindrical hollow shaft 3a and a solid shaft 3b disposed at the center of the hollow shaft 3a, and rotates the solid shaft 3b in the circumferential direction while the hollow shaft 3a is held. Have been able to. An engagement pin 3c protrudes from the tip of the hollow shaft 3a. A connecting hole 3d into which the base end portion 10a of the input shaft 10 is inserted is formed at the distal end of the solid shaft 3b.

  A joint 78 is provided at the base end portion of the input shaft side cover 70 a, and an engagement hole 78 a for engaging the engagement pin 3 c of the operation rod 3 is formed in the joint 78.

  This gripping device is configured as described above. Next, the usage method of this holding | gripping apparatus is demonstrated.

  This gripping device basically has a posture in which the input shaft 10 and the extension shaft 33 extend straight, and is used in a state where the tip of the operation rod 3 is connected to the joint 78. Then, as indicated by the phantom line in FIG. 3, the operator grasps the proximal end portion of the hollow shaft 3 a of the operation rod 3 and approaches the grasping device above the bird nest 1. At this time, the interval between the screwing members 40 facing each other is adjusted so that the outer gripping claws 52 are positioned outside the outer edge portion 1 b of the bird's nest 1.

  Then, as shown by the solid line in FIG. 3, the gripping device is lowered toward the bird's nest 1, and the latching portion 52 c of the outer gripping claw 52 is located below the outer edge portion 1 b of the bird's nest 1, The latching portion 51 c of the inner gripping claw 51 is positioned below the main body portion 1 a of the bird's nest 1. At this time, the leg portion 51 b of the inner gripping claw 51 is stuck into the bottom of the main body portion 1 a of the bird's nest 1.

  Then, the operator rotates the solid shaft 3b in the circumferential direction while holding the hollow shaft 3a of the operation rod 3. Since the hollow shaft 3a of the insulating operation rod 3 is connected to the joint 78 of the input shaft side cover 70a, and the engagement pin 3c of the hollow shaft 3a is engaged with the engagement hole 78a of the joint 78, the cover 70 rotates. Without this, the input shaft 10 rotates in the circumferential direction.

  When the input shaft 10 rotates in the circumferential direction, the first bevel gear 21 rotates, the first bevel gear 21 rotates, the second bevel gear 22 rotates, and the second bevel gear 22 rotates. The first intersecting shaft 31 and the second intersecting shaft 32 rotate in the circumferential direction, and further, the second bevel gear 22 rotates, the third bevel gear 23 rotates, and the third bevel gear 23 rotates. The shaft 33 rotates in the circumferential direction.

  The input shaft 10, the first intersecting shaft 31, the second intersecting shaft 32, and the extension shaft 33 rotate in the circumferential direction, and the side surface 41 of the screwing member 40 comes into contact with the side plate portions 71 of the covers 70a to 70d. The screwing member 40 and the gripping claws 50 that face each other move in a synchronized manner without the screwing member 40 rotating together. Then, the latching portion 52c of the outer gripping claw 52 supports the lower surface of the outer edge portion 1b of the bird's nest 1, and the latching portion 51c of the inner gripping claw 51 supports the bottom surface of the main body portion 1a of the bird's nest 1. It becomes a state to do. The bird's nest 1 is stably supported by a total of eight grip claws 52 from four directions.

  Thereafter, when the operator raises the operation rod 3, the gripping device rises in a state where the bird's nest 1 is supported. Since the bird's nest 1 is supported by the gripping claws 50 on all sides, the bird's nest 1 rises without dropping or collapsing, and is removed from the upper arm 2. And the removal operation | work of the bird's nest 1 is complete | finished when an operator draws a holding | grip apparatus.

  Note that the present invention can be variously modified without being limited to the above embodiment. For example, in the above embodiment, the gripping claw 50 is a combination of the inner gripping claw 51 and the outer gripping claw 52. However, depending on the form of the bird's nest 1, the gripping claws 50 may be extended from the screwing member 40 one by one.

  Moreover, in the said embodiment, the casing 70 which accommodates the input shaft 10, the mechanism part 20, the three shafts 31, 32, 33, and the screwing member 40 separately was provided. However, the casing 70 may be configured such that the input shaft 10, the mechanism unit 20, the three shafts 31, 32, 33 and the screwing member 40 are accommodated in one space. In this case, the restricting means for restricting rotation around the axis of the screwing member 40 screwed to the input shaft 10 and the three shafts 31, 32, 33 is formed by a frame or the like that spans the casing 70. Also good.

  Moreover, in the said embodiment, the mechanism part 20 is provided with the 1st bevel gear 21, the 2nd bevel gear 22, and the 3rd bevel gear 23, and the three shafts 31, 32, and 33 are arranged in three directions at intervals of 90 °. It was made to be. However, the three shafts 31, 32, 33 may be arranged unevenly. Further, the gripping device includes a fourth bevel gear (not shown) that meshes with the first bevel gear 21 and the third bevel gear 23, and includes a second cross shaft 32 that is not connected to the first cross shaft 31. You may connect to.

  Moreover, in the said embodiment, the holding | grip apparatus was provided with the three axis | shafts of the 1st crossing axis 31, the 2nd crossing axis | shaft 32, and the extension shaft 33, and the input shaft 10. However, the gripping device may include a total of three shafts, that is, two shafts and the input shaft 10, and may be arranged so that the interval between the shafts is 120 °. Further, the gripping device may include a total of five or more axes.

  Further, according to the size and form of the bird's nest 1, the extension shaft 33 may be fixed in a bent posture with respect to the input shaft 10 with the second bevel gear 22 as an axis.

1 ……… Bird's nest 3 ……… Two-axis rotation operation rod (operation rod)
DESCRIPTION OF SYMBOLS 10 ... Input shaft 20 ... Mechanism part 21 ... 1st bevel gear 22 ... 2nd bevel gear 23 ... 3rd bevel gear 31 ... axis | shaft (1st crossing axis)
32 …… Axis (second crossing axis)
33 ... axis (extension shaft)
40 ... screwing member 41 ... sliding contact surface 50 ... gripping claw 51 ... inner gripping claw 52 ... outer gripping claw 70 ... casing

Claims (6)

  An input shaft connected to the biaxial rotating operation rod, a mechanism portion that receives the rotational force of the input shaft, two or more shafts that are rotated by driving of the mechanism portion, an input shaft and two or more shafts A screwing member that is screwed to each of the screwing members, each of which is movable along the shaft so as to be spaced apart and close to each other in synchronization with the rotation of the shaft, and a grip that extends from each screwing member A bird nest gripping device comprising a claw, wherein the input shaft and two or more shafts are arranged radially around the mechanism portion.   The bird's nest according to claim 1, wherein the gripping claws are a combination of an inner gripping claw and an outer gripping claw, and the inner gripping claws are formed longer than the outer gripping claws. Gripping device.   3. The casing according to claim 1, further comprising a casing having an opening that accommodates the input shaft, the mechanism, two or more shafts, and a screwing member, and allows the gripping claw to move. A gripping device for bird's nest.   4. The bird nest gripping device according to claim 3, wherein the casing includes a restricting means for restricting rotation of the screwing member.   The two or more shafts include three shafts arranged in three directions at intervals of 90 °, and a middle shaft is disposed on an extension line of the input shaft. 5. The bird nest gripping device according to any one of 4 above. The mechanism includes a first bevel gear connected to the input shaft, a second bevel gear connected to one shaft in a direction intersecting the input shaft, and a first bevel gear connected to the middle shaft. Three bevel gears, the second bevel gear meshes with the first bevel gear and the third bevel gear,
6. The bird nest gripping device according to claim 5, wherein one axis in the direction intersecting the input axis and the other axis are connected to each other.

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