JP2012115026A - Implement for work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an implement for work enabling a worker to fix a tool rotatably supported at the tip part of the implement at a desired angle and position by an operation on the proximal side so as to securely perform a required work.SOLUTION: An implement for work comprises: a cylindrical operation rod 2; a connection body 3 uniaxially arranged at the tip part 2a of the operation rod 2, and to which a tool 6 used for work is connected directly or indirectly; a coupling part 4 for coupling the operation rod 2 and the connection body 3 in a relatively free rotatable manner where the tip part 2b of the operation rod 2 and the base end part 3a of the connection body 3 are energized in a direction alienating each other; and an operation mechanism part 5 configured so that a position-fix operation for fixing the relatively rotating operation rod 2 and the connection body 3 at a desired angle and position and a release operation for releasing the position-fix can be performed by an operation on the proximal side.

Description

  The present invention relates to a working tool in which a tool such as a bender, compression pliers, and a grounding short-circuit tool is connected to the tip of an operating rod used for indirect hot-line work, for example.

  As a conventional working tool of this type, for example, one rod connected to an insulating operation rod operated by an operator and the other rod connected to a tool used for indirect hot wire work are coupled. A connection auxiliary tool for an insulating operation rod configured as described above is known (see Patent Document 1). The insulating operation rod connection aid has a concave receiving portion at the tip of one rod, a plurality of recesses in the curved surface of the receiving portion, and a receiving portion at the tip of the other rod. A spherical body to be inserted is formed, and a plurality of convex portions that fit into the concave portions are formed on the outer surface of the spherical body.

  Then, when the spherical body of the other rod is inserted into the receiving portion of one rod, the convex portion of the spherical body is fitted into each concave portion of the receiving portion, and the other rod is attached to one rod. It becomes supported so that it can rotate freely, and a required operation | work can be performed with respect to a to-be-processed object by rotating operation of a tool.

JP 2009-71911 A

  By the way, in the case of the conventional working tool, the actual usage mode of the tool connected to the tip of the other rod has a predetermined angle with respect to the object to be processed so that the intended work can be performed. It is essential to be fixed. Regarding the fixing of the tool, it is desirable for the operator to fix the other rod (tool) at a desired angular position by operating the insulating operating rod. However, the conventional working tool is configured such that the position can be fixed at the connecting portion of one rod and the other rod, but the other rod can be moved at a desired angular position by operating the insulating operation rod. The position is not fixed.

  Therefore, in view of the above-described problems, the present invention performs a required operation smoothly and reliably by securely fixing a tool rotatably supported at the tip of the operation rod at a desired angular position by a hand operation. An object of the present invention is to provide a work implement that can be used.

  The work implement according to the present invention is arranged on the same axis line with the cylindrical operation rod 2 and the tip 2b of the operation rod 2, and the tool 6 used for the operation is connected directly or indirectly. The connecting rod 3, the distal end portion 2b of the operating rod 2 and the proximal end portion 3a of the connecting rod 3 are urged in a direction away from each other, and the operating rod 2 and the connecting rod 3 are coupled so as to be relatively rotatable. A connecting portion 4, an operation mechanism portion 5 configured to be able to perform a position fixing operation for fixing the operation rod 2 and the connecting body 3 that rotate relative to each other at a desired angular position, and a releasing operation for releasing the position fixing; It is provided with.

  In this case, since the operation rod 2 and the connection body 3 are connected to each other so as to be relatively rotatable in a state in which the distal end portion 2b of the operation rod 2 and the base end portion 3a of the connection body 3 are biased in the direction away from each other. With the operation rod 2 fixed, the distal end portion 3c of the connection body 3 circularly moves, swings and rotates with the base end 3a of the connection body 3 as a fulcrum, or the connection body 3 is fixed. The base end portion 2a of the operating rod 2 rotates, swings and rotates with the distal end portion 2b of the operating rod 2 as a fulcrum, and the operating rod 2 and the connecting body 3 rotate, swing and rotate relative to each other. Will be able to. That is, the operation rod 2 and the connection body 3 can be freely rotated, and various operations can be dealt with.

  Further, since the operation rod 2 and the connection body 3 that are relatively rotated by the operation mechanism section 5 are fixed at a desired angular position by a hand operation, the operation rod 2 and the connection body 3 are predetermined when performing the work. Suitable posture formed by maintaining the angle, that is, a posture fixed at a predetermined angle with respect to the object to be processed so that a desired work can be performed, that is, a working tool suitable for the work. Can be easily secured. Furthermore, by performing the position fixing of the operation rod 2 and the connecting body 3 and the release of the position fixing by hand operation, the required work can be smoothly and reliably performed. That is, it is possible to provide a working tool that is simple for the operator and can improve the working efficiency.

  Further, according to the present invention, the connecting portion 4 is connected to the outer surface protrusions 40, 41 formed on the outer surfaces of the distal end portion 2 b of the operation rod 2 and the proximal end portion 3 a of the connection body 3, and the outer surface protrusions 40, 41. The elastic member 42 interposed between the distal end portion 2b of the operating rod 2 and the base end portion 3a of the connecting body 3, the distal end portion 2b of the operating rod 2, the outer projection 40 on the operating rod side, Inner surface protrusions 430 and 430 are formed on the inner surface to cover the elastic member 42, the outer surface protrusion 41 on the connection body side, and the base end portion 3a of the connection body 3 and to lock the outer surface protrusions 40 and 41 from the direction in which the elastic member 42 is compressed. The covering 43 may be configured.

  In this case, the distal end portion 2b of the operating rod 2 and the connecting body 3 are in a state where the distal end portion 2b of the operating rod 2, the elastic member 42, the proximal end portion 3a of the connecting body 3 and the covering body 43 are arranged on the same axis. The base end portion 3a is urged in a direction away from each other by the elastic action of the elastic member 42 interposed between the tip end portion 2b of the operating rod 2 and the base end portion 3a of the connecting body 3, and each external projection 40 and 41 and the inner surface protrusions 430 and 430 are maintained in a locked state. When a force larger than the elastic force of the elastic member 42 is applied from the outside, the operation rod 2 and the outer surface protrusions 40 and 41 of the connection body 3 are separated from the inner surface protrusions 430 and 430 of the covering body 43, but the elasticity is increased. Since the outer surface protrusions 40 and 41 are biased in the direction of locking with the inner surface protrusions 430 and 430 by the elastic action (repulsive force) of the member 42, the balance between the external force and the elastic force of the elastic member 42 is obtained. The operation rod 2 and the connection body 3 can be relatively rotated. That is, while maintaining the state where the operation rod 2 and the connection body 3 are connected, the operation rod 2 and the connection body 3 can be freely used with the distal end portion 2b of the operation rod 2 and the base end portion 3a of the connection body 3 as fulcrums. It can be turned. That is, the distal end portion 2b of the operation rod 2 and the proximal end portion 3a of the connection body 3 are connected by the universal joint.

  Further, according to the present invention, the operating mechanism portion 5 is moved forward and backward with respect to the base end portion 3a of the connecting body 3, and the movable locking shaft 50 is inserted into the operating rod 2 so as to be able to advance and retract. A fixed locking shaft 30 extending from the base end portion 3 a of the connecting body 3 toward the tip end portion 2 b of the operation rod 2, and the base end of the operation rod 2. And an unlocking mechanism portion 51 that is arranged in the portion 2a and is connected to the movable locking shaft 50 so as to be able to advance and retract the movable locking shaft 50 and maintain the advanced state. Good.

  In this case, the movable locking shaft 50 is advanced from the distal end portion 2b of the operation rod 2 to the fixed locking shaft 30 of the connecting body 3, and the movable locking shaft 50 and the fixed locking shaft 30 are locked to each other. The connecting body 3 in which the distal end portion 3c rotates with the proximal end portion 3a as a fulcrum and the operation rod 2 in which the proximal end portion 2a rotates with the distal end portion 2b as a fulcrum are securely fixed at a desired angular position. become able to. Furthermore, by maintaining the advanced state of the movable locking shaft 50, the locked state of the movable locking shaft 50 and the fixed locking shaft 30 is maintained. In addition, by retracting the movable locking shaft 50 from the fixed locking shaft 30, the locked state between the movable locking shaft 50 and the fixed locking shaft 30 can be easily released.

  Further, according to the present invention, the operation rod 2 and the connection body 3 are rotated along the peripheral edge of either one of the distal end portion 2 b of the operation rod 2 or the base end portion 3 a of the connection body 3. You may make it provide the rotation mechanism part 7 by which the guide body 70 to guide is arrange | positioned and the moving body 71 which moves along the guide body 70 is arrange | positioned at the other end surface.

  In this case, a plurality of them are arranged on the other end surface along the guide body 70 arranged along the peripheral edge of one end surface of either the distal end portion 2b of the operation rod 2 or the base end portion 3a of the connecting body 3. When the movable body 71 moves, the connecting body 3 rotates with the distal end rotating about the base end 3a, and the operation rod 2 rotates the base end with the distal end 2b serving as a fulcrum. Is smoothly and reliably performed.

  As described above, according to the present invention, the connection body to which the tool is directly or indirectly connected is arranged on the same axis line at the distal end portion of the cylindrical operation rod, and the distal end portion and the connection body of the operation rod are arranged. With the base end portions of the operating rods biased in the direction away from each other, the tip end portion of the operating rod and the base end portion of the connection body are connected to each other so that they can rotate relative to each other. Provided. Therefore, force can be applied to the object to be processed from multiple directions with the tool so that the intended work can be performed. In addition, the rear part of the operating unit can be used to perform a position fixing operation for fixing the connecting body and the operating rod that rotate relative to each other at a desired angular position and a releasing operation for releasing the position fixing. The tool can be fixed at a desired angular position by a hand operation. Therefore, the tool can be easily fixed at a predetermined angle with respect to the object to be processed regardless of the operator's standing position or the position of the object to be processed, and the required work can be reliably performed.

The front view which shows the work implement which concerns on one Embodiment of this invention. (A) is a figure which shows the cancellation | release state in which the movable latching shaft of the operating rod detach | leaved from the fixed latching shaft of the connection body in the connection part of the working tool of FIG. 1, (b) is operation in a cancellation | release state The side sectional view showing the state of a stick, (c) is a front view showing the state where "FREE" was displayed in the base end part of an operation stick. (A) is the figure which looked at the to-be-positioned body arrange | positioned at the base end part of the connection body of FIG. 1 from the lower side, (b) is the positioning body arrange | positioned at the front-end | tip part of the operating rod of FIG. Figure seen from. The figure which shows the earthing | grounding short circuit instrument as a tool connected to a connection body. (A) is a side view which shows the connection part of a grounding short circuit instrument, (b) is a front view of Fig.5 (a). 1A is a diagram showing a locked state in which the movable locking shaft of the operating rod is locked to the fixed locking shaft of the connection body in the connecting portion of the working tool in FIG. 1, and FIG. The side sectional view showing the state of the operation bar, (c) is a front view showing the state where “LOCK” is displayed at the base end of the operation bar. The figure which shows the state which connected the earthing | grounding short circuit instrument to the center overhead wire. 7A is a view showing a state where an operator is positioned obliquely below the overhead line in the state of FIG. 7, and FIG. 7B is a view showing a state where the connection body is locked in an inclined state. . The figure which shows the state which connected the earthing | grounding short circuit appliance to each three-phase overhead wire, respectively. The perspective view which showed the modification of the connection part which has arrange | positioned the rotation mechanism part to the front-end | tip part of an operating rod, and the base end part of a connection body. The front view which shows the working instrument which concerns on other embodiment. (A) is the figure which looked at the fixed locking shaft from the lower side, (b) is the figure which looked at the movable locking shaft from the upper side. (A) is the figure which shows the state by which the latching state of the fixed latching shaft and the movable latching shaft was cancelled | released, (b) was locked by the movable latching shaft latching to the fixed latching shaft. The figure which shows a state.

  A working instrument according to an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the workpiece to be processed by the work implement is an overhead wire installed between the utility poles, and the tool used for the work is a ground short-circuit appliance.

  As shown in FIGS. 1 to 3, the working instrument 1 according to the present embodiment is disposed on the same axis line on a cylindrical operation rod 2 having insulation properties and a distal end portion 2 b of the operation rod 2. In a state where the connection body 3 to which a tool used for work is directly or indirectly connected, the distal end portion 2b of the operation rod 2 and the proximal end portion 3a of the connection body 3 are biased in a direction away from each other, A connecting portion 4 to which the operation rod 2 and the connection body 3 are coupled so as to be relatively rotatable, a position fixing operation for fixing the relatively rotating operation rod 2 and the connection body 3 at a desired angular position, and releasing the position fixing. And an operation mechanism unit 5 configured so that the release operation can be performed at hand.

  As shown in FIG. 1, the operation rod 2 has a cylindrical shape and is formed of a member that is not easily deformed and does not deteriorate in insulation, such as an epoxy resin reinforced plastic or a polyester resin reinforced plastic having a low hygroscopic property. Yes. 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 operation rod 2 is disposed on the opening end of the operation rod 2 on the base end side of the operation rod 2 and the opening end of the base end 2a of the operation rod 2 so as to cover the rubber cap 20. A connecting member 21 for connecting another operating rod 2 to extend the entire length, and a portion that is fitted and fixed to an intermediate portion of the operating rod 2 and can be gripped to prevent an electric shock accident; A safety limit collar 22 for clarifying the boundary with other parts, a draining collar (water draining collar) 23 fitted and fixed above the safety limit collar 22 as a measure against rain, and an operating rod 2 And a serrated positioning body 24 formed on the peripheral edge of the end face of the tip 2b. The safety limit collar 22 and the draining collar 23 are both made of soft synthetic rubber. Further, as shown in FIG. 3A, the positioning body 24 is arranged line-symmetrically at the end surface of the distal end portion 2b of the operating rod 2, and each positioning body 24, 24 is positioned on the center line of the end surface of the distal end portion 2b. .. Have three triangular protrusions 24a,...

  As shown in FIG. 1, the connection body 3 is formed in a hollow cylindrical shape by an aluminum alloy. Then, as shown in FIG. 2 (a), at the base end portion 3 a of the connection body 3, a fixed locking shaft 30 extending toward the distal end portion 2 b of the operation rod 2 and a positioning body 24 of the operation rod 2 are provided. And a serrated object to be positioned 31 to be locked. And the front-end | tip part of the fixed latching shaft 30 has the to-be-latched part 300 formed in the substantially disc shape, and the some latching convex part 301 formed in this to-be-latched part 300 in the radial direction. have. As shown in FIG. 3B, the positioned bodies 31 are arranged symmetrically with respect to the end face of the base end portion 3a of the connection body 3, and each of the positioned bodies 31, 31 is the center of the end face of the base end portion 3a. .. Have four triangular protrusions 31a,... Provided continuously along the line. Further, the positioning body 24 and the positioned body 31 have the operation rod 2 and the connecting body 3 left and right with the movable locking shaft 50 and the fixed locking shaft 30 as fulcrums when the front view of FIG. It protrudes so as to follow the trajectory of the operation rod 2 and the connecting body 3 so as to be locked when it is rotated (oscillated). Specifically, the protruding body 24a of the positioning body 24 of the operating rod 2 is located at a higher position from the inner edge side toward the outer edge side, and the protruding body 31a of the positioned body 31 of the connection body 3 is positioned on the inner edge side. It is in a lower position as it goes to the outer edge side.

  As shown in FIG. 1, the middle part 3 b of the connection body 3 is extrapolated movably on the outer peripheral surface of the middle part 3 b and is connected to a first protrusion 32 and a second protrusion 33 described later (described later). A lock nut 34 is provided which is screwed into a connecting portion of a grounding short-circuit device) to fix the tool to the tip portion.

  As shown in FIG. 1, the distal end portion 3c of the connection body 3 is orthogonal to the axial line on the first protrusion 32 disposed on the end surface thereof so as to be able to protrude and retract on the extended line of the axial line, and on the outer peripheral surface of the distal end portion 3c. A pair of second protrusions 33 and 33 are provided so as to be able to appear and retract in the direction. The connecting portion of the tool is coupled to the first protrusion 32 and the second protrusions 33 and 33.

  As shown in FIG. 2A, the connecting portion 4 is formed on the outer peripheral surface of the operation rod side outer surface protrusion 40 formed on the outer peripheral surface of the distal end portion 2 b of the operation rod 2 and the base end portion 3 a of the connection body 3. As an elastic member that is interposed between the outer surface protrusion 41 of the connecting body and the outer surface protrusions 40, 41 and that is extrapolated so as to straddle the distal end portion 2 b of the operating rod 2 and the proximal end portion 3 a of the connecting body 3. The compression spring 42, the inner diameter is larger than the outer diameter of the compression spring 42, the distal end portion 2 a of the operation rod 2, the operation rod side outer surface projection 40, the compression spring 42, the connection body side outer surface projection 41, and the base end portion of the connection body 3 3a, and a cylindrical covering body 43 having a pair of annular inner surface protrusions 430 and 430 formed on the inner surface of the peripheral edge portion of the opening on both sides and radially compressing the compression spring 42.

  In normal times, that is, when no external pressure is applied to the connection body 3, the compression springs 42 are arranged on the outer surfaces so as to separate the distal end portion 2 b of the operating rod 2 and the proximal end portion 3 a of the connection body 3 from each other. Since the protrusions 40 and 41 are pressed, the outer surface protrusions 40 and 41 are in a state of being locked to the inner surface protrusions 430 and 430 of the covering body 43. That is, as shown in FIG. 2A, the operation rod 2 and the connection body 3 are located on the same axis. That is, it is in a standby state in which it can rotate in multiple directions around this axis. Specifically, in a state where the operation rod 2 is fixed, the distal end portion 3c of the connection body 3 circularly moves, swings and rotates with the base end portion 3a of the connection body 3 as a fulcrum, or the connection body 3 is fixed. In this state, the base end portion 2a of the operating rod 2 rotates, swings and rotates with the tip 2b of the operating rod 2 as a fulcrum, and the operating rod 2 and the connecting body 3 move and swing relative to each other. , And can be rotated (see FIG. 1).

  When the base end 2a of the operating rod 2 is operated with the connecting portion 4 as a fulcrum in the standby state where the connection body 3 is fixed to the object to be processed, an operation to which pressure is applied is performed. The part of the rod-side outer protrusion 40 is separated from the inner protrusion 430 of the covering 43. Further, when the connecting body 3 is operated with the connecting portion 4 as a fulcrum in a state where the operation rod 2 is fixed, the portion of the connecting body side outer surface protrusion 41 to which pressure is applied is separated from the inner surface protrusion 430 of the covering body 43. Separate. That is, the operation rod 2 or the connection body 3 can be freely rotated by separating the portions of the outer surface protrusions 40, 41 to which external pressure is applied from the inner surface protrusion 430 of the covering body 43. That is, the operation rod 2 and the connection body 3 can be freely rotated, so that various work can be dealt with, and work efficiency can be greatly improved.

  As shown in FIG. 1, the operation mechanism unit 5 includes a movable locking shaft 50 that is inserted in the operation rod 2 so as to advance and retreat with respect to the base end 3 a of the connection body 3, and the above-described fixed shaft. A fixed locking shaft that extends from the base end portion 3a of the connecting body 3 toward the distal end portion 2b of the operating rod 2 so as to be locked to the locking shaft 30, that is, the movable locking shaft 50 at the advanced position. 30 and a lock release mechanism that is arranged at the base end portion 2a of the operation rod 2 and is connected to the movable locking shaft 50 so that the movable locking shaft 50 can be advanced and retracted and maintained in the advanced state. Part 51. As shown in FIG. 2A, the movable locking shaft 50 has a disc-shaped locking portion 500 formed at the tip thereof, similarly to the fixed locking shaft 30. The portion 500 is formed with locking projections 501,... That are locked to the locking projections 301,. As shown in FIG. 2 (b), the unlocking mechanism 51 includes a lock hole 510 formed in the proximal end of the movable locking shaft 50 and an inner peripheral surface on the back side of the proximal end 2 a of the operation rod 2. The release-side locking body 511 that engages and disengages in the unlocked lock hole 510 in which the movable locking shaft 50 is separated from the fixed locking shaft 30, and the back side of the base end portion 2 a of the operation rod 2. The lock side latching body 512 which is disposed at the upper part of the inner peripheral surface and engages / disengages with the lock hole 510 in the locked state where the movable locking shaft 50 is locked to the fixed locking shaft 30, and the base of the operation rod 2. An operating rod 513 protruding from the end 2a in a direction orthogonal to the axis and an outer surface on the front side of the base end 2a of the operating rod 2 are formed so as to be parallel to the axis. A long hole 514 having a rectangular shape when viewed from the front, and a pull that constantly urges the operating rod 513 in the direction in which the movable locking shaft 50 moves backward. A display for displaying the lock (“LOCK”) and the release (“FREE”) of the movable locking shaft 50 in accordance with the lifting and lowering operation of the operating rod 513 while the spring 515 and the operating rod 513 are inserted through the substantially central portion. It has the board and 516 (refer FIG.2 (c) and FIG.6 (c)).

  Here, with reference to FIG. 4 and FIG. 5 (a), (b) about the structure of the earthing short circuit tool 6 as a tool connected to the overhead wire (to-be-processed object) C using the working tool 1 which concerns on this embodiment. To explain. The grounding short-circuiting device 6 has a distal end portion driven into the ground and a grounding rod 60 whose proximal end portion is exposed from the ground, and three overhead wire side sandwiching bodies 61 connected to a three-phase overhead wire C, respectively. , A connecting member 62 for connecting each of the overhead wire side holding bodies 61, one end of the grounding side holding body 63 connected to the base end portion 60 a of the grounding rod 60, and one end of the lead wire 622. And a grounding side clamping part 63A having a connecting conductor 64 having the other end connected to the grounding side clamping body 63.

  As shown in FIG. 4, the grounding rod 60 is driven into the ground with a base end portion 60a formed by bending it into a ring (triangle) so that it can be easily connected to a connecting portion 630 of the grounding side clamping body 63 described later. The tip portion 60b is formed in a sharp shape so as to be easily removed.

  The overhead wire side clamping body 61 of the overhead wire side clamping portion 61A has a fixed side clamping portion 610 formed by being bent into a concave shape (arc shape) so as to be hooked to the overhead line C as shown in FIG. A main body portion 611 having a female screw portion 612 formed on the other end at a position facing the inner surface of the concave portion of the fixed-side clamping portion 610, and a female screw portion 612 of the main body portion 611. A male screw 613 that is close to and away from the inner surface of the fixed-side clamping unit 610, and a connection unit 614 that is disposed at the base end of the male screw 613 and to which the distal end 3c of the connection body 3 of the working instrument 1 is connected. And a movable side clamping part 615 that is disposed at the distal end of the male screw 613 and contacts and separates from the fixed side clamping part 610. 4 and FIG. 5A, one end portions of the first to third connection lines L1 to L3 are connected to the back surfaces of the main body portions 611,. In addition, the main body 611 of the overhead wire side holding body 61 connected to the overhead wire C in the center is connected to connect the remaining two overhead wire side holding bodies 61 and 61 connected to the other overhead wire C in a horizontal row. A bar 616 is attached. The connecting bar 616 extends outward from both sides of the female threaded portion 612 of the overhead wire side clamping body 61, and the remaining overhead wire side clamping bodies 61 and 61 are connected to the extended both sides, respectively. Each overhead wire side clamping body 61, ... is integrated. Specifically, it is integrated so that the overhead wire side holding body 61 in the center is at a high position and the left and right overhead wire side holding bodies 61 and 61 are at the same low position.

  The connecting member 62 has one end connected to the plurality of connection terminals 620,... To which the other ends of the first to third connection lines L1 to L3 are connected, and one end to each of the connection terminals 620,. A plurality of conductive lines 621, whose ends are collectively connected, a single lead line 622 drawn out from the base end (common connection part) of each of the conductive lines 621, ..., each connection terminal 620, ..., each conducting wire 621, ..., and a cover 623 that covers the lead wire 622.

  The grounding side clamping body 63 of the grounding side clamping unit 63 </ b> A includes a connection part 630 connected to the base end part 2 a of the grounding bar 2 and a bottomed cylindrical cover 631 that covers the connection part 630. The connecting portion 630 has a U-shaped main body 6300 having a pair of bent pieces whose both ends are bent inward, and a fixed-side holding portion 6301 formed on one bent piece of the main body 6300. It has a screw rod 6302 penetrating through the other bent piece of the main body 6300 and a movable side clamping portion 6303 fixed to the tip of the screw rod 6302. The cover 631 is made of rubber or synthetic resin. Then, the base end portion 60 a of the grounding rod 60 is inserted between the fixed side clamping portion 6301 and the movable side clamping portion 6303 through the opening 631 a of the cover 631, and the movable side clamping portion 6303 is connected to the base end of the grounding rod 60. The base end portion 60a of the grounding rod 60 is clamped by the fixed side clamping portion 6301 and the movable side clamping portion 6303.

  Next, how to use the work implement according to the present embodiment will be described with reference to FIGS. 2 and 4 to 9. First, the covering of the overhead wire C of the three-phase electric wire is peeled off using an indirect hot wire peeling tool (not shown) to expose the core wire. On the other hand, the connection portion 630 of the ground-side clamping body 63 of the grounding short-circuiting device 6 is connected to the base end portion 2 a of the grounding rod 2. Specifically, the base end portion 2a of the grounding rod 2 is arranged between the fixed side holding portion 6301 and the movable side holding portion 6303, and the screw rod 6302 is operated to hold the fixed side holding portion 6301 and the movable side holding portion 6303. The base end 2a of the grounding rod 2 is clamped by the portion 6303. After that, the connection part 614 (hereinafter referred to as the central connection part 614) in the overhead wire side clamping body 61 in the central part of the ground short-circuiting instrument 6 is connected in advance to the connection body 3 of the work instrument 1, and the center The movable-side holding portion 615 is fixedly held so that the fixed-side holding portion 610 (hereinafter referred to as the central-side fixed-side holding portion 610) of the central portion of the overhead wire-side holding body 61 is hooked on the overhead wire C of the portion. Separated from the part 610. At this time, as shown in FIG. 2A, the movable locking shaft 50 of the work tool 1 is separated from the fixed locking shaft 30 of the connection body 3, and the operation of the movable locking shaft 50 of the work tool 1 is performed. As shown in FIGS. 2B and 2C, the flange 513 is positioned at the lower end of the long hole 514, and the release side locking body 511 is locked from the lock hole 510 of the operation rod 2, thereby releasing the position. The characters “FREE” displayed on the display board 516 can be seen through the long hole 514. That is, both the operation rod 2 and the connection body 3 are in a rotatable state (standby state).

  Then, as shown in FIG. 7, the worker A gets on the bucket B of an aerial work vehicle (not shown) and can secure a proximity limit distance between the three-phase overhead line C and the worker A. Moving. In this position, the operator A makes the inner surface of the concave portion of the fixed-side clamping portion 610 of the central portion contact the outer peripheral surface of the central portion of the overhead line C from the bucket B, and The fixed-side clamping unit 610 at the center is hooked. Thereafter, as shown in FIGS. 6A to 6C, the operation rod 513 of the operation rod 2 of the work tool 1 is pushed up along the long hole 514, and the movable locking shaft is moved from the distal end portion 2 b of the operation rod 2. 50 is advanced and locked to the fixed locking shaft 30 of the connecting body 3, the release side locking body 511 is detached from the lock hole 510 of the operation rod 2, and the lock side locking body 512 is Locks into the lock hole 510. That is, the locked state of the movable locking shaft 50 and the fixed locking shaft 30 is maintained. That is, the operation rod 2 and the connection body 3 are integrated. At this time, the position of the operating rod 513 of the operating rod 2 of the work tool 1 is positioned at the upper end of the long hole 514 and is displayed on the display board 516 as shown in FIGS. The “LOCK” character is visible through the slot 514.

  In this state, when the operation rod 2 of the work tool 1 is rotated in the circumferential direction, the connection body 3 is rotated in the same direction as the operation rod 2, so that the male screw 613 of the overhead wire side holding body 61 at the center is removed. It can be turned. Then, when the male screw 613 is rotated until the outer surface of the movable holding portion 615 of the overhead wire holding member 61 in the central portion comes into pressure contact with the outer peripheral surface of the lower side of the overhead wire C, the central portion is brought into contact with the central wire C. The overhead wire side sandwiching body 61 is connected.

  At this time, as shown in FIG. 8A, the worker A may be located obliquely downward with respect to the overhead line C, and it is necessary to adjust the angle of the connection body 3 with respect to the operation rod 2 of the work implement 1. There is. In this case, the operating rod 513 is moved to the position shown in FIGS. 2B and 2C, that is, the operating rod 513 is pushed down to return to the “FREE” position, and the operating rod 2 and the connecting body 3 are rotated. In a movable state, the connection body 3 can be positioned at a desired angle regardless of the standing position of the worker A. Then, when the connecting body 3 is rotated to a desired angular position, the operating rod 513 is pushed up and positioned at “LOCK”. In this case, as shown in FIG. 8 (b), even if the connecting body 3 is inclined, the positioned body 31 of the connecting body 3 is locked to the positioning body 24 of the operating rod 2. , Maintained at a predetermined angle. As described above, even when the connecting body 3 is obliquely positioned with respect to the operating rod 2, the movable locking shaft 50 of the operating rod 2 is engaged with the fixed locking shaft 30 of the connecting body 3 at a desired angular position. If it is stopped, a state in which the operating rod 2 can be rotated is secured. Further, if the positioned body 31 of the connection body 3 is locked to the positioning body 24 of the operation rod 2 in a state where the movable locking shaft 50 and the fixed locking shaft 30 are locked, the operation rod is similar to the above. 2 is secured. That is, the working instrument 1 according to the present embodiment can ensure a posture suitable for work on the workpiece regardless of the positions of the worker A and the workpiece (overhead line C).

  After the central wire-side clamping body 61 in the central portion is connected to the central overhead wire C, the operation rod 2 of the work implement 1 is once pushed up and rotated in the circumferential direction, so that the central wire-side clamping body 61 in the central portion. The connection body 3 of the work implement 1 is removed from the connection portion 614. Then, the same operation procedure as described above is repeated, and as shown in FIG. 9, the remaining two overhead wire side clamping bodies 61, 61 of the grounding short circuit device 6 are sequentially connected to the remaining two overhead wires C, C (FIG. 9).

  As described above, according to the working instrument 1 according to the present embodiment, the operation rod 2 and the connection body 3 are coupled so as to be relatively rotatable, so that the standing position of the worker A and the object to be processed (the overhead line C) Regardless of the position, the required work, that is, the work of attaching and detaching the grounding short circuit device 6 to the overhead line C can be performed. Further, since the operation of the movable locking shaft 50 of the operation rod 2 is configured to be operated on the base end side of the operation rod 2, that is, the operator A's hand, it is convenient for the operator A.

  In addition, the working instrument according to the present invention can be variously modified without being limited to the above embodiment.

  For example, in the case of the embodiment, the movable locking shaft 50 of the operation rod 2 is separated from the fixed locking shaft 30 of the connection body 3 and the operation rod 2 and the connection body 3 are relatively rotated. You may make it provide the rotation mechanism part 7 which guides rotation of the connection body 3 at the time of relative rotation. For example, as shown in FIG. 10, the rotating mechanism unit 7 has a curved bevel gear 70 having a curved tooth trace 70 a as a guide body disposed on the peripheral portion of the end surface of the distal end portion 2 b of the operation rod 2. A pair of helical bevel gears 71 that mesh with the curved bevel gear 70 may be rotatably supported by the base end portion 3 a of the connection body 3. In this case, since the helical bevel gear 71 revolves along the curved bevel gear 70 while rotating, the circular motion of the distal end portion 3c with the base end portion 3a of the connection body 3 as a fulcrum is smoothly performed, The connecting body 3 positioned obliquely with respect to the operation rod 2 is reliably positioned.

  Further, in the case of the above-described embodiment, the disk-shaped locking portion 500 is formed on the movable locking shaft 50 of the operation shaft 2, and the disk-shaped locked portion 300 is fixed on the fixed locking shaft 30 of the connection body 3. , And the locking projections 501 and 301 locked to the locking portion 500 and the locked portion 300 are formed in the radially outward direction. However, as shown in FIGS. A concave locking portion 500A is formed on the second movable locking shaft 50A, and a spherical locked portion 300A into which the locking portion 500A is fitted is formed at the tip of the fixed locking shaft 30A. May be. Then, a plurality of locking projections 501A and 301A are formed on the inner surface of the locking portion 500A and the surface of the locked portion 300A, and the locking protrusions 501A and 301A are locked to each other to connect the operation rod 2 and the connection rod. The body 3 is pivotably connected. In this case, the locking projections 301A of the fixed locking shaft 30A are fitted between the locking projections 501A of the movable locking shaft 50 so that the position of the rotating connecting body 3 can be fixed. Become. That is, similarly to the above-described embodiment, the operation rod 2 and the connection body 3 can be freely operated, and the required work can be smoothly and reliably performed.

  In the case of the above-described embodiment, as the unlocking mechanism 51, the lock hole 510 is formed in the movable lock shaft 50, and the pair of lock bodies 511 that are elastically biased so as to be engaged with and disengaged from the lock hole 510. 512 is arranged on the inner peripheral surface of the operation rod 2, but without using the respective locking bodies 511, 512, the long hole through which the operation rod 513 of the movable locking shaft 50 is led out has a key shape (reverse L It is also possible to lock the operation state of the operating rod 513. Specifically, if the operating rod 513 is pushed up to the upper end along the straight portion of the long hole and then moved along the horizontal portion of the long hole, the operating rod 513 is moved to the lower side edge of the horizontal portion of the long hole. The operation lever 513 can be locked in the advanced state.

  Further, in the case of the above-described embodiment, the movable locking shaft 50 inserted in the operation rod 2 so as to be movable back and forth is advanced and retracted by the operating rod 513 protruding in a direction orthogonal to the movable locking shaft 50. However, you may make it advance / retreat using the link mechanism driven by lever operation. For example, a configuration such as a gripping tool for indirect hot wire work (so-called Yatsuko) may be used.

  Moreover, in the case of the said embodiment, although the tool (grounding short circuit fixture 6) used for indirect hot-wire work was connected to the connection body 3 of the work implement 1, it is used for other work, for example, piping work or construction work, etc. You may make it connect the tool used, for example, a pipe wrench, a hammer, etc.

  DESCRIPTION OF SYMBOLS 1 ... Work tool, 2 ... Operation rod, 2b ... The front-end | tip part of the operation rod 2, 3 ... Connection body, 3a ... Base end part of the connection body 3, 4 ... Connection part, 5 ... Rear part of operation machine, 6 ... Tool ( Grounding and short-circuiting device), 7... Rotating mechanism, 40 and 41... External projection, 42... Elastic member (compression spring), 43. 70, guide body (curved bevel gear), 71 ... moving body (helical bevel gear), A ... worker, B ... bucket, C ... overhead wire, L1-L3 ... connection line

Claims (4)

A cylindrical operating rod (2);
A connecting body (3) which is arranged on the same axis line at the tip (2b) of the operating rod (2) and to which a tool (6) used for work is directly or indirectly connected;
With the distal end (2b) of the operating rod (2) and the base end (3a) of the connecting body (3) being urged away from each other, the operating rod (2) and the connecting body (3) are moved relative to each other. A connecting portion (4) for rotatably connecting;
An operation mechanism section (5) configured to be able to perform a position fixing operation for fixing the operation rod (2) and the connecting body (3) that rotate relative to each other at a desired angular position and a releasing operation for releasing the position fixing. A working implement characterized by comprising:   The connecting portion (4) includes an outer surface protrusion (40, 41) formed on each outer surface of the distal end portion (2b) of the operating rod (2) and the proximal end portion (3a) of the connection body (3), and each outer surface. An elastic member (42) interposed between the distal end portion (2b) of the operating rod (2) and the proximal end portion (3a) of the connection body (3) so as to abut against the protrusions (40, 41); The distal end portion (2b) of the operation rod (2), the outer surface projection (40) on the operation rod side, the elastic member (42), the outer surface projection (41) on the connection body side, and the base end portion (3a) of the connection body (3). And a covering (43) having inner surface protrusions (430, 430) formed on the inner surface for locking the outer surface protrusions (40, 41) from the direction of compressing the elastic member (42). The work implement according to claim 1.   The operating mechanism portion (5) includes a movable locking shaft (50) inserted into the operating rod (2) so as to advance and retract so as to advance and retract with respect to the base end portion (3a) of the connection body (3). Fixing that extends from the base end (3a) of the connection body (3) toward the distal end (2b) of the operating rod (2) so as to be locked to the movable locking shaft (50) at the advanced position. The locking shaft (30) and the base end (2a) of the operating rod (2) are disposed and connected to the movable locking shaft (50), so that the movable locking shaft (50) is advanced and retracted and advanced. The work implement according to claim 1 or 2, further comprising an unlocking mechanism (51) configured to be able to maintain the state.   The operation rod (2) and the connection body arranged along the peripheral edge of either one of the distal end portion (2b) of the operation rod (2) or the base end portion (3a) of the connection body (3). A rotating mechanism (7) having a guide body (70) for rotating (3) and a plurality of moving bodies (71) arranged along the guide body (70) arranged on the other end face. The work implement according to any one of claims 1 to 3, wherein the work implement is provided.

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