JP2010082780A - Working device for remote operation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working device for a remote operation which can effectively and assuredly prevent the generation of a bend in a main operating rod with a simple structure. <P>SOLUTION: The working device for remote operation includes an end working tool 3 to which a fixing device 4 and a rotating device 5 are rotatably connected through a supporting rotating shaft 19, the main operating rod 1 having an end part to which the fixing device 4 is connected, an auxiliary operating rod 2 having an end part connected rotatably to a driven piece 5a of the rotating device 5 protruding from the supporting rotating shaft 19, an operating handle 7 rotatably supported to the main operating rod 1 through a rotating shaft 10 for an operation and having an operating piece 7a protruding from the rotating shaft 10 for the operation in the same direction as that of the driven piece 5a to which a base end part of the auxiliary operating rod 2 is rotatably connected to move the auxiliary operating rod 2 in accordance with an action of a lever and rotate the rotating device 5 so as to come close to or separate from the fixing device 4 and a connection holding device 6 arranged between the main operating rod 1 and the auxiliary operating rod 2 and having one end fixed to the main operating rod 1 and the other end movably connected to or held by the auxiliary operating rod 2 to connect the main operating rod 1 to the auxiliary operating rod 2 with a substantially prescribed space held. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is mainly used for distribution line work, and is particularly suitable for remote line operation of a high-level distribution line by remotely operating a tip work tool in place of an operator's hand. The present invention relates to a work implement for operation.

  In recent years, in order to avoid power outages during distribution line construction, live line construction for distribution lines has increased, and various tools and tools for live line construction have been developed. In the past, hot-line work on ladder cars was common, and while hot-wire work was carried out by direct manual work wearing insulating gloves, recently for the purpose of completely preventing electric shock accidents. Remote control work tools suitable for hot-line work, such as a gripping tool with a lock or a cutting tool that can remotely control a tip work tool attached to the tip of an operation rod, have begun to be used.

  For example, during hot-line construction to connect a pull-down line to a distribution line, work to strip off the insulation coating of the distribution line, work to attach a connector for connecting the copper line of the pull-down line to the copper line of the distribution line, pull-down line The work to attach the copper wire to the connector, the work to attach the insulation cover to the connecting part of the pull-down line, the work to wind the binder and tape, etc. This is done using operating tools.

  As a representative example of the above-described various remote operation work tools, there is known a remote control work tool that holds a work object such as a distribution line and works (see Patent Document 1). For convenience of explanation, this remote operation tool will be described with reference to FIG. 1 which is a side view of the first embodiment of the present invention. The remote operation work tool is a tip which is a kind of a tip work tool for gripping a distribution line by a fixed grip 4 and a rotary grip 5 coupled to the fixed grip 4 via a support rotary shaft 19. A gripping tool 3, an electrically insulating main operating rod 1 for removably attaching a fixed gripping tool 4 of the tip gripping tool 3 to the tip and positioning the fixed gripping tool 4 at a working position, An electrically-insulating auxiliary operation rod 2 that is pivotably connected to a passive piece 5a protruding from a support rotation shaft 19 of the movable gripping tool 5 to open and close the tip gripping tool 3, and a main operation rod 1 The operation piece 9a fixed to the base end of the operation piece 9 is rotatably supported via the operation rotation shaft 10 and protrudes in the same direction as the passive piece 5a from the operation rotation shaft 10 itself. The actuating piece 7a is connected to the base end portion of the auxiliary operation rod 2 so as to be rotatable. An operating handle 7 is provided as a main component.

When the operation tool 7 is operated so as to hold the operation handle 7 together with the grip portion 8 of the main operation rod 1, the auxiliary operation rod 2 is pulled by the operation piece 7a of the operation handle 7 with a strong force due to the action of the lever. It moves in the direction toward the hand indicated by the arrow, and the rotating gripping tool 5 rotates toward the fixed gripping tool 4 indicated by the arrow by rotating the passive piece 5a with the movement of the auxiliary operation rod 2. Move. Thereby, the tip gripping tool 3 operates in a closed state and grips the work object so as to sandwich the work object between the rotary gripping tool 5 and the fixed gripping tool 4.
Japanese Patent No. 3435212

  When the operation tool for remote operation is operated to grip the operation handle 7 and rotate in the direction approaching the grip portion 8, the work object is sandwiched between the rotation gripping tool 5 and the fixed gripping tool 4. In this state, when the operation for applying further turning force to the operation handle 7 is performed, the auxiliary operation rod 2 is further pulled in the direction of the arrow in FIG. 1, and the work object is firmly held with a required holding force. . At this time, both ends in the longitudinal direction of the auxiliary operating rod 2 are rotatably connected to the passive piece 5a of the rotating gripper 5 and the operating piece 7a of the operating handle 7 protruding in the same direction from the main operating rod 1 side. Therefore, only the pulling force along the length direction of the auxiliary operating rod 2 acts on the auxiliary operating rod 2, but the main operating rod 1 is provided between the rotating gripping tool 5 and the fixed gripping tool 4. A force is applied to the distal end portion to be pulled toward the proximal end portion by the movement of the auxiliary operation rod 2 through the work object held by the workpiece, and a force to bend by the amount of movement of the auxiliary operation rod 2 acts. To do.

  On the other hand, as the main operation rod 1 and the auxiliary operation rod 2, for the purpose of reducing the weight for obtaining improved operability, generally, an FRP pipe is used, and this FRP pipe is used. Is easy to bend, and when the operation handle 7 is operated, a strong pulling force due to the action of the lever with the operation rotation shaft 10 as a fulcrum acts on the auxiliary operation rod 2 and a large deflection force acts on the main operation rod 1. As a result, the main operating rod 1 bends as shown by a two-dot chain line in FIG. In particular, the deflection of the main operation rod 1 becomes significant when the main operation rod 1 and the auxiliary operation rod 2 are long. When the main operating rod 1 is bent in this way, the distance between the main operating rod 1 and the auxiliary operating rod 2 is widened. As a result, the gripping force on the work object by the fixed gripping tool 4 and the rotating gripping tool 5 is a part of the gripping force. Escapes and decreases, and it becomes difficult to reliably hold the work object with a predetermined gripping force. In addition, the main operating rod 1 is bent every time it is used, so that there is a problem that strength is deteriorated and an expected life cannot be secured.

  The present invention has been made in view of the above-described conventional problems, and provides a remote operation work implement that can effectively and reliably prevent the main operation rod from being bent with a simple configuration. The purpose is to do.

  In order to achieve the above object, a remote operation work implement according to the first aspect of the present invention includes a fixture and a tip that is rotatably coupled to the fixture via a support rotation shaft. A work tool, a main operating rod having the tip connected to the fixing tool, an auxiliary operating rod having a tip rotatably connected to a passive piece protruding from the support rotating shaft of the rotating tool, The auxiliary handle is supported by a grip portion at the base end portion of the main operation rod via an operation rotation shaft and is protruded in the same direction as the passive piece from the operation rotation shaft. An operation in which the base end portion of the operation rod is pivotably connected, and the auxiliary operation rod is reciprocated in the length direction by the action of the lever to rotate the movable tool in the direction of contacting / separating the fixed tool. One end disposed between a handle and an intermediate portion of each of the main operation bar and the auxiliary operation bar Is connected to the main operation rod, and the other end portion is connected to or held by the auxiliary operation rod so as to be movable, and a connection holder for connecting the main operation rod and the auxiliary operation rod. It is characterized by that.

  According to a second aspect of the present invention, there is provided the remote operation work implement according to the first aspect, wherein the connection holder of the first aspect includes first and second holding members that respectively hold part of the outer peripheral surfaces of the main operation bar and the auxiliary operation bar. The both end portions are rotatably supported by the first and second holding members, respectively, with both end surfaces being rotatably contacted with the other outer peripheral surfaces of the main operation rod and the auxiliary operation rod. It is made of a connected member.

  According to a third aspect of the present invention, there is provided the remote operation work implement according to the first aspect, wherein the connection holder of the first aspect includes first and second holding members that respectively hold part of the outer peripheral surfaces of the main operation bar and the auxiliary operation bar. A connecting member having one end fitted to the other part of the outer peripheral surface of the main operating rod and fixed to the first holding member, and the other end connected to the second holding member; and the auxiliary operating rod The other end of the connecting member is supported by the other end of the connecting member in a state where the outer peripheral surface of the connecting member is rotatably or slidably movable, and the auxiliary operating rod is moved in the longitudinal direction together with the second holding member. It consists of a guide member that holds it to allow.

  According to the work tool for remote operation of the first aspect of the invention, when the auxiliary operating rod is moved by operating the operating handle, both ends of the auxiliary operating rod protrude from the main operating rod side in the same direction. Since it is rotatably connected to the passive piece of the moving gripper and the operating piece of the operation handle, the tip of the main operating rod is interposed through the work object between the rotating tool and the fixing tool. By being pulled toward the base end side by the movement of the auxiliary operation rod, a force for bending the movement of the auxiliary operation rod acts. At this time, the one end of the connection holder is fixed to the main operation rod and the other end is movably connected to or held by the auxiliary operation rod. Since the operation rod and the auxiliary operation rod are connected to each other at a substantially constant interval, the occurrence of bending of the main operation rod is effectively and reliably prevented, and the work object by the fixing tool and the rotating tool is used. The gripping force or cutting force is improved and the gripping force is maintained without loosening. Further, the main operating rod can be prevented from being deteriorated due to frequent occurrence of bending, and an expected life can be secured.

  According to the second aspect of the present invention, the distance between the main operation bar and the auxiliary operation bar is always substantially constant by rotating the connection holder in response to a change in the relative position of the auxiliary operation bar with respect to the main operation bar. Change posture to keep As a result, even if a strong force to bend the main operating rod by the relatively moving auxiliary operating rod is applied, the connection holder effectively and reliably prevents the occurrence of bending, so that The gripping force on the work object by the moving tool improves and is maintained without being loosened, or a required cutting force by the fixing tool and the rotating tool effectively acts on the work object.

  According to the third aspect of the present invention, the guide member rotates or reciprocates while the guide member rotates or slides with respect to the auxiliary operation rod. Therefore, the connecting member is not displaced with respect to the movement of the auxiliary operation rod. Since it is fixedly provided, the distance between the main operation bar and the auxiliary operation bar is the first and second connected to both ends of the connecting member regardless of the change in the relative position of the auxiliary operation bar to the main operation bar. The distance between the holding members is uniquely determined. As a result, even if a strong force is applied to the main operating rod to be bent by the auxiliary operating rod 2 that moves relative to the main operating rod, the occurrence of bending is effectively and reliably prevented by the connecting holder. And the auxiliary operation rod are kept substantially constant, and the gripping force of the work object by the fixing tool and the rotating tool is improved and is maintained without loosening. On the other hand, when the tip work tool is to be cut, the operating force of the operation handle is effectively transmitted to the cutting force of the tip work tool.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the drawings. FIG. 1 is a side view showing a remote operation work implement according to the first embodiment of the present invention. In this embodiment, a tip gripping tool 3 for gripping a distribution line (work object) is used as a tip work tool. The case where it attaches is illustrated. This remote-control work tool has, as a working position, a tip gripping tool 3 for gripping a distribution line between the fixed gripping tool 4 and the rotary gripping tool 3 and a fixed gripping tool 4 detachably attached to the tip portion. An electrically insulative main operating bar 1 for positioning and an electrically insulative auxiliary operating bar 2 for operating by operating a rotary gripping tool 5 rotatably connected to the tip end part are provided.

  The main operation rod 1 and the auxiliary operation rod 2 are provided with a rubber stopper inserted in a hollow portion of an FRP pipe and a plurality of outer peripheral surfaces of the pipe in order to avoid creeping discharge and electric leakage due to rain during work for rainfall. A rain drainer 13 is attached, and an insulating tape or a Teflon tape for preventing leakage may be wound. And between the intermediate parts of the length direction of each of the main operation bar 1 and the auxiliary operation bar 2, the connection holding tool 6 which is the component which is the characteristic of this invention is attached in the arrangement | positioning which spans, The connection holder 6 is fixed to the main operation bar 1 and holds the auxiliary operation bar 2 so as to be movable relative to the main operation bar 1. Details of the connection holder 6 will be described later.

  A rotating gripping tool 5 is pivotally supported via a support rotating shaft 19 at a base portion of a fixed gripping tool 4 that is detachably attached to the distal end portion of the main operation rod 1. One end of the first connection fitting 20 is rotatably connected to the passive piece 5 a protruding from the support rotation shaft 19 in the rotation gripping tool 5 via the first connection shaft 11. The other end is connected to the tip of the auxiliary operation rod 2. A second connection fitting 21 is attached to the proximal end portion of the auxiliary operation rod 2, and the second connection fitting 21 is connected to a third connection fitting 23 via a first spring 22.

  On the other hand, a grip portion 8 for an operator to grip and support is provided at the base end portion of the main operation rod 1, and the mounting piece 9a of the operation fitting 9 fixed to the grip portion 8 includes An operation handle 7 for gripping operation is rotatably supported via an operation rotation shaft 10. An operating piece 7a protruding in the same direction as the passive piece 5a of the rotary gripper 5 from the operating rotary shaft 10 of the operating handle 7 can be rotated to the third connection fitting 23 via the second connecting shaft 12. It is connected. That is, the base end portion of the auxiliary operation rod 2 can be rotated by the second connecting shaft 12 via the third connection fitting 23, the first spring 22 and the second connection fitting 21 on the operating piece 7 a of the operation handle 7. It is connected. Therefore, when the operator performs an operation of grasping the operation handle 7 with the grip portion 8 held, the auxiliary control rod 2 is pulled toward the hand side by the action of the lever, so that the rotary gripping tool 5 and the fixed gripping tool 4 are pulled. Grasping the distribution line, which is the work object, between The operation fitting 9 is provided with a safety limit rod 18 made of ABS resin on the upper side of the figure.

  A second spring 24 that constantly biases the operating handle 7 in a direction to open the operating handle 7 is mounted between the mounting piece 9a of the operating bracket 9 and the operating piece 7a of the operating handle 7. When not being operated, the operation handle 7 is always in an open state, and accordingly, the rotary gripping tool 5 is also held in an open state separated from the fixed gripping tool 4.

  The operation fitting 9 is provided with a lock mechanism, and this lock mechanism is a well-known one shown in detail in the above-mentioned Patent Document 1, and will be briefly described below. That is, the lock mechanism includes a bearing-like one-way clutch 14 that uses a roller (not shown) attached to a lever fulcrum position of the operation handle 7, and an operation rotation shaft 10 that supports the one-way clutch 14. And a plurality of locking mechanisms (not shown) for fixing and releasing the rotation of the operation rotation shaft 10 at an arbitrary position. This locking mechanism is not shown in the figure, but a locking gear fixed to the operation rotary shaft 10, a locking pin for locking the locking gear, and a biasing force of the locking pin in the direction of the locking gear. A latch spring, a latch release lever 17 that releases the latch pin by pushing up the pin of the latch pin, a lever support shaft that rotatably supports the latch release lever 17, and a latch release An unlocking knob for holding or releasing the lever at the unlocking position and a knob support shaft for rotatably supporting the unlocking knob are provided.

  When the locking mechanism is set at the open position and the lock mechanism is opened, the operation rotation shaft 10 is freely rotated, and the operation of the one-way clutch 14 is irrelevant to the operation of the operation handle 7. Thus, the operating handle 7 is freely rotated, and the opening / closing operation of the operating handle 7 is transmitted to the auxiliary operating rod 2 via the first spring 22, and the rotating grip 5 is opened / closed according to the opening / closing operation of the operating handle 7. On the other hand, when the locking mechanism is set at the locking position so that the locking mechanism operates, the operation rotating shaft 10 is locked, and the operation handle 7 is closed by the operation of the one-way clutch, that is, The auxiliary operating rod 2 can be rotated only in the direction of pulling it toward the hand side, and the operating handle 7 can be locked at an arbitrary position without any step.

  Therefore, when the operator operates the operation handle 7 in the closing direction, the operation handle 7 stops at the position operated by the operator in the closing direction, and the rotary gripping tool 5 is moved to the operation handle 7 via the auxiliary operation rod 2. It will be in the state locked at the position according to a closed position. At this time, regardless of the shape and size of the work object, when the operator determines that the work object has been gripped with a force suitable for the work, if the hand is released from the operation handle 7, in that state, The operation handle 7 can be locked as it is. At this time, the rotating gripping tool 5 is biased in the closing direction by the first spring 22. Here, in order to keep the gripping force of the distribution line by both gripping tools 4 and 5 without loosening, it is necessary to surely prevent the main operating rod 1 from bending to the state shown by the two-dot chain line in FIG. There is. Therefore, in the work tool for remote operation according to this embodiment, it is effective and reliable that the main operation rod 1 bends as described below with a simple configuration in which only the connection holder 6 is provided. Can be prevented.

  Next, a specific configuration of the connection holder 6 will be described. 2A is a plan view of the connection holder 6, and FIGS. 2B and 2C are sectional views taken along line AA of FIG. 2A before and after the operation handle 7, respectively. As shown in FIG. 2 (a), the connection holder 6 is a first U-shaped first member having a fitting part 27 a curved in a semicircular shape having an inner diameter substantially equal to the outer diameter of the main operating rod 1. A holding member 27, a second holding member 28 having a U-shape in a plan view having a semicircular fitting portion 28 a having an inner diameter substantially equal to the outer diameter of the auxiliary operation rod 2, and the first and second holding members And a connecting member 29 for connecting the members 27 and 28 to each other.

  In the connection holder 6, the fitting portion 27 a of the first holding member 27 is fitted on the half of the outer peripheral surface of the main operation rod 1, and the fitting portion 28 a of the second holding member 28 is arranged on the outer periphery of the auxiliary operation rod 2. Two bolts in a state in which both side surfaces on both ends in the longitudinal direction of the connecting member 29 are fitted to the opposing inner surfaces of the first and second holding members 27, 28, respectively. 30 and 31, respectively, are inserted into a pair of insertion holes 27b, 27b, 28b, 28b provided on both sides of each of the first and second holding members and the mounting holes 29a, 29b of the connecting member 29, and each bolt Wing nuts 32 and 33 are screwed and fastened to threaded portions at the tips of 30 and 31, respectively.

  As shown in FIG. 2 (b), the connecting member 29 has both end faces in the longitudinal direction (left and right in the figure) formed in a semicircular shape, and the semicircular tip ends thereof are the main operating rod 1 and the auxiliary member. Each is in contact with the outer surface of the operating rod 2 by line contact. That is, the length of the connecting member 29, that is, the length between the semicircular tips on both end faces of the connecting member 29 is set to match the distance between the main operating rod 1 and the auxiliary operating rod 2. Further, the front end surfaces on both sides of each of the first and second holding members 27, 28 are formed in a semicircular shape having the same diameter as the semicircular shape of the both end surfaces of the connecting member 29. Further, the connecting member 29 has mounting holes 29a and 29b formed so as to have a diameter slightly larger than the outer diameter of the shafts of the bolts 30 and 31, and is supported so as to be rotatable around the shafts of the bolts 30 and 31. Has been.

  The connection holder 6 is fixed in a state of being sandwiched from both sides with respect to the main operation rod 1 by the first holding member 27 and one end surface of the connection member 29 which is the left end in the figure, and the second holding member 28 and the connection member 29. The other end surface, which is the right end of the figure, is fixed in a state of being sandwiched from both sides with respect to the auxiliary operation rod 2, but the connection holder 6 can be rotated using the bolts 30 and 31 as rotation support shafts, The semi-circular end surfaces of the connection holder 6 can be easily displaced by rotating while being in line contact with the outer surfaces of the main operation bar 1 and the auxiliary operation bar 2, respectively. It can be rotated in accordance with the movement in the length direction and can be displaced within the range of two postures shown in FIGS. 2 (b) and 2 (c). When the rotary gripping tool 5 of the tip gripping tool 3 is open with respect to the fixed gripping tool 4 without operating the operating handle 7, as shown in FIG. Locations deviated from the center line connecting the tip ends of the semicircular shapes at both ends indicated by the dotted line are in contact with the outer surfaces of the main operating rod 1 and the auxiliary operating rod 2, respectively.

  When an operation of gripping the operation handle 7 in the direction approaching the grip portion 8 side is performed, the gap between one end surface (the right end surface in the drawing) of the connection holder 6 and the fitting portion 28a of the second holding member 28 is performed. Since the auxiliary operation rod 2 sandwiched between the two is moved relative to the main operation rod 2 in the direction of the arrow in FIG. 2 (c), the connection holder 6 is moved to the left bolt with the movement of the auxiliary operation rod 2. The posture is changed to an arrangement substantially orthogonal to the auxiliary operation rod 2 by being rotated about the shaft portion of 30. At this time, the connection holder 6 is in a posture in which both end portions on the center line connecting the semicircular tips at both ends indicated by a one-dot chain line are in contact with the outer surfaces of the main operation rod 1 and the auxiliary operation rod 2, respectively. . Here, since the auxiliary operation rod 2 is disposed at a relative position inclined so as to be gradually separated downward with respect to the main operation rod 1, the auxiliary operation rod 2 is connected and held when the auxiliary operation rod 2 is moved downward. The contact portion of the tool 6 with respect to the auxiliary operation rod 2 is displaced to a location where the distance between the auxiliary operation rod 2 and the main operation rod 1 is slightly increased.

  That is, the connecting holder 6 is in a posture so as to always keep the distance between the main operation rod 1 and the auxiliary operation rod 2 substantially constant in response to a change in the relative position of the auxiliary operation rod 2 to the main operation rod 1. Change. As a result, even if a strong force is applied to the main operation rod 1 in the state indicated by the two-dot chain line in FIG. Since the rod 2 is always connected so as to be held at a substantially constant interval, the occurrence of bending of the main operating rod 1 is effectively and reliably prevented, and the gripping of the distribution line by both gripping tools 4 and 5 is performed. The force is improved and the gripping force is maintained without loosening. For this reason, the main operating rod 1 is prevented from being deteriorated due to frequent occurrence of bending, and an expected life can be ensured. In addition, in this remote operation work implement, the improvement and maintenance of the gripping force of the distribution line by both grippers 4 and 5 can be obtained by a simple configuration in which only the connection holder 6 is provided.

  If the connection holding tool 6 is provided in the vicinity of the middle of the length direction of each of the main operation rod 1 and the auxiliary operation rod 2, the main operation rod 1 can be most effectively prevented from being bent. Further, it is preferable to provide two or three connection holders 6 corresponding to the increase in the length of the main operation rod 1 and the auxiliary operation rod 2. Furthermore, the remote operation work tool of the present invention is replaced with the tip gripping tool 3 provided as the tip work tool in this embodiment, and other tip work tools, for example, work for stripping the insulation coating of the distribution line, The work to attach the connector that connects the copper wire to the copper wire, the work to attach the copper wire of the down wire to the connector, the work to install the insulating cover on the connecting part of the down wire, the work to wind the binder or tape, etc. For this purpose, various tip work tools can be appropriately selected as necessary, and can be connected and attached to the tip portions of the main operation rod 1 and the auxiliary operation rod 2, respectively. Regardless of which tip work tool is attached, it is possible to effectively and reliably prevent the main operating rod 1 from being bent, so that the operating force of the operating handle 7 is changed to the working force of the fixed tool and the movable tool. An effect that can be effectively transmitted and maintained can be obtained.

  Further, in the remote operation work implement according to the first embodiment, both end portions of the first and second holding members 27, 28 both having a U shape in plan view have the same diameter as the semicircular shape of both end portions of the connection holder 6. Since it is formed in a semicircular shape, there is an advantage that the first and second holding members 27 and 28 or a part of the connection holder 6 does not protrude in a protruding state as the connection holder 6 rotates. .

  FIG. 3 shows the attachment location of the connection holder 36 that is the main part of the work tool for remote operation according to the second embodiment of the present invention. FIG. b) is a cross-sectional view taken along the line B-B of (a), and FIG. In the coupling holder 36 provided in the second embodiment, the fitting portion 27a of the first holding member 27 is externally fitted to the main operation rod 1, and the fitting portion 28a of the second holding member 28 is attached to the auxiliary operation rod 2. The externally fitted configuration is the same as in the first embodiment. This embodiment is different from the first embodiment in that a semicircular fitting recess 37a that fits to a half portion of the outer peripheral surface of the main operating rod 1 on one end surface of the connecting member 37 on the main operating rod 1 side. A mounting recess 37b is formed in the other half of the connecting member 37 on the auxiliary operating rod 2 side, and the outer side surfaces of the pair of mounting pieces 37c, 37d forming the mounting recess 37b are first. 2 is fitted to the opposing inner surface of the holding member 28. In this state, the same bolt 30 as in the first embodiment is passed through the pair of insertion holes 27b, 27b of the first holding member 27 and the mounting hole 7e of the connecting member 37, and a butterfly is inserted into the screw portion at the tip of the bolt 30. The nut 32 is screwed and fastened. As a result, the connecting member 37 is fixed to the main operating rod 1 so that it cannot be displaced by fitting the fitting recess 37 a to the half of the outer peripheral surface of the main operating rod 1.

  On the other hand, between the pair of attachment pieces 37c, 37d of the connecting member 37, a guide pulley 38, which is clearly shown in FIG. 3 (c), is disposed so as to be rotatably fitted to the outer peripheral surface half of the auxiliary operation rod 2. The bolt 31 passes through the pair of insertion holes 28b, 28b of the second holding member 28, the mounting holes 37e, 37f of the pair of mounting pieces 37c, 37d, and the rotation support hole 38a of the guide pulley 38, and the bolt Wing nuts 32 and 33 are screwed onto the threaded portion at the tip of 30 and fastened.

  In the work tool for remote operation according to this embodiment, the guide pulley 38 rotates in a predetermined direction with the shaft portion of the bolt 31 as the rotation support shaft as the auxiliary operation rod 2 reciprocates. It smoothly reciprocates while sliding on the fitting portion 38a of the second holding member 28. Therefore, the connecting member 37 does not displace with the movement of the auxiliary operation rod 2 as in the first embodiment. Therefore, regardless of the change in the relative position of the auxiliary operation rod 2 with respect to the main operation rod 1, The distance from the auxiliary operation rod 2 is uniquely determined by the distance between the first and second holding members 27 and 28 connected to both ends of the connecting member 37. As a result, even if a strong force is applied to the main operating rod 1 to be bent in the state indicated by the two-dot chain line in FIG. In addition, since the gap between the main operating rod 1 and the auxiliary operating rod 2 is kept constant, the gripping force of the distribution line by both gripping tools 4 and 5 is maintained without loosening. On the other hand, when the tip work tool is to be cut, the operating force of the operation handle 7 is effectively transmitted to the cutting force of the tip work tool. In addition, since the connecting member 37 is fixedly provided without being displaced with respect to the movement of the auxiliary operation rod 2 as described above, the fitting recess 37a is fitted to the half of the outer peripheral surface of the main operation rod 1. Since the main operation rod 1 can be firmly fixed to the main operation rod 1, the occurrence of bending of the main operation rod 1 can be more effectively suppressed while smoothly allowing the auxiliary operation rod 2 to move.

  In the second embodiment, the connecting holder 36 is allowed to move in the longitudinal direction of the auxiliary operating rod 2 by the guide pulley 38 and the second holding member 28 that are rotatably in contact with the auxiliary operating rod 2. However, the auxiliary operation rod 2 is held by allowing the movement of the auxiliary operation rod 2 in the length direction by the guide member and the second holding member 28 slidably contacting the auxiliary operation rod 2. Even in the configuration, the same effects as those of the second embodiment can be obtained.

The side view of the work tool for remote control which concerns on 1st Embodiment of this invention. (A) is a top view of the connection holding tool of the work tool for remote operation same as the above, (b), (c) is the sectional view on the AA line of (a) before and after operation of an operation handle, respectively. (A), (b) is a cutting plan view of the connection holder in the work tool for remote operation according to the second embodiment of the present invention, a sectional view taken along line BB of (a), (c) is the connection holding of the same. The perspective view of the guide pulley in a tool.

Explanation of symbols

1 Main operation rod 2 Auxiliary operation rod 3 Tip gripping tool (tip work tool)
4 Fixed gripping tool (fixing tool)
5 Rotating gripper (Rotating tool)
5a Passive piece 6 Connection holder 7 Operation handle 7a Operation piece 8 Grip part 10 Operation rotation shaft 19 Support rotation shaft 27 First holding member 28 Second holding member 29 Connection member 36 Connection holding device 37 Connection member 38 Guide pulley (Guide member)

Claims (3)

A tip working tool having a fixing tool and a rotating tool rotatably coupled to the fixing tool via a support rotating shaft;
A main operating rod having the tip connected to the fixing tool;
An auxiliary operation rod having a tip portion rotatably connected to a passive piece protruding from the support rotation shaft in the rotation tool;
The auxiliary handle is supported by a grip portion at the base end portion of the main operation rod via an operation rotation shaft and is protruded in the same direction as the passive piece from the operation rotation shaft. An operation in which the base end portion of the operation rod is pivotably connected, and the auxiliary operation rod is reciprocated in the length direction by the action of the lever to rotate the movable tool in the direction of contacting / separating the fixed tool. A handle,
Arranged between the intermediate portions of the main operating rod and the auxiliary operating rod, one end is fixed to the main operating rod, and the other end is connected or held movably to the auxiliary operating rod. A connecting holder for connecting the main operating rod and the auxiliary operating rod;
A remote-control work implement characterized by comprising:   The connection holder has first and second holding members that respectively hold a part of the outer peripheral surface of each of the main operating rod and the auxiliary operating rod, and both end surfaces are the outer peripheral surfaces of each of the main operating rod and the auxiliary operating rod. 2. The remote-control work tool according to claim 1, wherein both end portions are connected to the first and second holding members so as to be pivotable while being in contact with the other portion so as to be pivotable.   The connection holding tool is fitted with first and second holding members that respectively hold a part of the outer peripheral surface of each of the main operation rod and the auxiliary operation rod, and one end is fitted to the other portion of the outer peripheral surface of the main operation rod. The connecting member, which is fixed to the first holding member and whose other end is connected to the second holding member, is in contact with the other part of the outer peripheral surface of the auxiliary operation rod so as to be rotatable or slidable. And a guide member which is supported by the other end portion of the connecting member and holds the auxiliary operating rod together with the second holding member so as to allow movement in the length direction of the auxiliary operating rod. Work implement.

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