JP5456140B1 - Gripping tool - Google Patents

Abstract

An object of the present invention is to move a movable gripping part closer to a fixed gripping part without rotating an operating rod, thereby enabling a firm and firm gripping of an object to be gripped and releasing the gripping, and by an operator's hand operation. Provided is a gripping tool capable of regulating the movement of the movable gripping part and releasing the regulation.
A gripping tool (1) includes an insulating operating rod (3), a gripping mechanism (4) having a head portion (41) and a movable gripping portion (45) on which a fixed gripping portion (42) is formed, and the operating rod (3) and the head portion (41) are integrated. And an accommodation space 5 opened to the proximal end portion 43 of the head portion 41 is provided in the operation rod 3 and the proximal end portion 43 of the head portion 41, and the movable body 6 is placed in the accommodation space 5 in the axial direction of the operation rod 3. The movable body 6 is housed so as to be movable along the one end side of the movable body 6 so that the movable body 6 can be projected and retracted from the opening 5 a of the head portion 41. It is assumed that the operation unit 9 for moving the moving body 6 along the axial direction of the operation rod 3 is provided on the unit 34 side.
[Selection] Figure 4

Description

  The present invention relates to a tool used in an indirect hot wire operation for a high-voltage overhead wire or the like in a live wire state, and in particular, can hold a gripped object such as a high-voltage overhead wire reliably and firmly and The present invention also relates to a gripping tool that can be easily locked and released.

  As a tool for grasping an object to be grasped such as a high-voltage overhead wire in a live state on a pillar of a column-like standing body such as a utility pole, for example, an indirect live-line grasping tool (straining tong or the like shown in Patent Document 1) Is used).

  An outline of a known indirect hot wire gripping tool shown in Patent Document 1 includes an operation rod made of an insulating material and an electric wire gripping portion attached to one end in the longitudinal direction of the operation rod. And a fixed portion and a movable portion. The fixing portion includes a claw portion having a claw-like claw portion on the distal end side, and a connection portion to which a proximal end side of the claw portion is connected and a through hole is formed in the center. A rotating body having a through hole with a thread groove formed in the inner peripheral surface is inserted through the through hole of the connecting portion. On the other hand, the movable portion includes a rod-shaped screw shaft body that is threaded so as to be engaged with the thread groove on the inner peripheral surface of the through hole of the rotating body, a movable body that can grip the electric wire in cooperation with the fixed portion, and It has. The movable body has a concave portion on a surface facing the fixed portion, and is attached to the distal end of the screw shaft body in a state where the concave portion is fitted in a linear portion extending from the claw portion of the fixed portion to the proximal end side. In addition, the fixing portion includes a knob portion that is a part of a lock mechanism that holds the electric wire so that it is not easily loosened when the electric wire is tightened. The operating rod has a distal end portion fixed to the base end portion of the rotating body of the fixed portion, and a space in which the electric wire can be stored when the screw shaft body of the movable portion moves away from the fixed portion. And the fixed part.

JP 2010-68582 A

  However, in the configuration of the indirect live-line gripping tool as shown in Patent Document 1, by rotating the operation rod, the screw shaft rod to which the movable part is attached is rotated in synchronization with the rotation of the operation rod, and the screw Since the shaft rod is advanced to the movable part side, and the movable part is pushed by the tip of the screw shaft rod and the movable part is brought close to the fixed part, the movable part is brought close to the fixed part and fixed to the movable part. In order to hold the high-voltage overhead wire or the like with the portion, it is necessary to fix the head having a fixing portion by hooking it on the high-voltage overhead wire or the like.

  Then, when the operating rod is rotated, the head of the indirect live wire gripping tool swings in the left-right direction, and the extending direction of the head to the tip of the fixing portion is perpendicular to the installation direction of the high-voltage overhead wire. However, there is a risk that the high-voltage overhead wire or the like may be sandwiched and held between the fixed portion and the movable portion in an oblique manner with respect to the installation direction of the high-voltage overhead wire or the like. For this reason, the indirect live wire gripping tool may not be able to grip a high-voltage overhead wire or the like reliably and firmly.

  In this case, in order to redo the gripping of the high-voltage overhead wire etc. with the indirect live wire gripping tool, the movable part is unlocked by operating the knob part provided on the head part with an indirect live wire tool such as a bind hammer. Rotating the operating bar in the opposite direction and moving the screw shaft bar backward from the fixed part, after moving the movable part away from the fixed part, rotating the operating bar again to bring the movable part closer to the fixed part As a result, it takes time to prepare other indirect live tools such as a bind hammer and to rotate the operating rod, which may increase the overall length of the indirect live work and complicate the work. .

  In addition, there are cases where two high-voltage overhead wires and underline are intended to be held by a single indirect hot wire gripping tool. In this case, the high-voltage overhead wire and the underline are to be held in a substantially vertical orientation. However, since the operating rod is rotated, the high-voltage overhead line and the underline are sometimes held in a substantially horizontal direction.

  Therefore, the present invention allows the movable gripping portion to be brought close to the fixed gripping portion without rotating the operating rod, and grips the object to be gripped such as a high-voltage overhead wire between the movable gripping portion and the fixed gripping portion, It is possible to release the grip, and a control for preventing the movable gripping part from being separated from the fixed gripping part and a gripping capable of releasing the regulation by an operation at the hand of the worker. The purpose is to provide a tool.

A gripping tool according to the present invention includes a rod-shaped operation rod, a head portion having a fixed gripping portion formed on the tip side, and a movable gripping portion that grips an object to be gripped with the fixed gripping portion in the vicinity of the fixed gripping portion. In the gripping tool including the gripping mechanism, the operation rod and the head portion of the gripping mechanism are integrated, and the operation rod and the proximal end portion of the head portion are along the axial direction of the operation rod. A series of storage spaces extending in the direction of opening, and the storage space opens to a portion on the base end side of the head portion, and the bar-shaped moving body is stored in the storage space so as to be movable along the axial direction of the operation bar. The one end side portion of the movable body in the longitudinal direction can be projected and retracted from the opening of the proximal end portion of the head portion toward the fixed gripping portion, and the one end portion in the longitudinal direction of the movable body is The movable gripping part is attached, and the longitudinal direction of the operation rod Wherein the gripping mechanism have a operating unit for moving along the movable body on the opposite side in the axial direction of the operation rod, the operation section includes at least a side surface of the operation rod of the operating rod axis of the A through-hole extending along the direction and communicating with the accommodation space, and a protruding portion that protrudes from a side surface of the moving body and has a head appearing on the side surface of the operating rod from the through-hole of the operating rod. And the movable body and the movable gripper are attached to the movable body so that the movable body is rotatable about its own axis, and the one or more extension portions extending in the circumferential direction of the operation rod are provided in the through hole. And the movement of the movable body along the axial direction of the operating rod is restricted by rotating the movable body and moving the protruding portion to an extended portion of the through hole . . Here, the operation rod is made of, for example, an insulating material. When the object to be gripped is used as an indirect hot wire gripping tool, for example, a high-voltage overhead wire, other live wire, or the like is applicable. The moving body is formed of an insulating material at least on the side having the operation portion. The head of the protrusion may have a larger radial dimension than a portion that passes through the through hole of the operation rod. The protruding portion may be a separate body from the moving body and attached to the moving body. When the extending portion of the through-hole extends in both the circumferential direction of the operating rod with respect to the portion extending along the axial direction of the operating rod of the through-hole, the extending portion extending in one of the circumferential directions of the operating rod and the operating rod You may arrange | position so that the extension part extended to the other of the circumferential direction may become alternate. An extension portion that extends at least toward the gripping mechanism in the longitudinal direction of the operating rod may be provided at the tip in the extension direction of the extension portion of the through hole.

  Thereby, by moving the moving body along the axial direction of the operating rod, the movable gripping part attached to one end in the longitudinal direction of the moving body moves in a direction away from the fixed gripping part of the head part. Therefore, it is possible to hold the object to be held between the fixed holding part and the movable holding part without releasing the operation rod, and to release the holding. In addition, since the operating unit for moving the moving body along the axial direction of the operating rod is provided on the other end side opposite to the gripping mechanism in the longitudinal direction of the operating rod, the operating unit is also operated. This can be done easily by the operator.

Furthermore, by pushing the head of the protruding portion that has appeared on the side of the operating rod from the through hole of the operating rod toward the gripping mechanism or pulling it to the opposite side of the gripping mechanism, the moving body and thus this moving body Since the attached movable gripping portion can be moved closer to the fixed gripping portion, it is possible for the worker to perform an operation of moving the projecting portion by hand.

Furthermore, the protruding portion is moved along the axial direction of the operation rod of the through hole, the movable gripping portion at the tip of the moving body is brought close to the fixed gripping portion, and the fixed gripping portion and the movable gripping portion are By moving the protruding part to the extended part of the hole while gripping the object to be gripped, the protruding part comes into contact with the edge of the extended part of the through hole located on the axial direction side of the operating rod. It is possible to restrict (lock) the moving body having the movable gripping portion from moving in the axial direction of the operation rod.

Then, by moving the projecting part from the extended part of the hole to the part along the axial direction of the operating rod, the projecting part is released from the restriction (locking) due to contact with the edge on the axial side of the operating bar. Therefore, it becomes possible to move the moving body having the protruding portion and thus the movable gripping portion in the axial direction of the operating rod.

In the gripping tool according to the present invention, the moving body includes a first member to which the movable gripping portion is attached and a second member to which the protruding portion is provided, and the first member and the The second member is connected by an elastic body (claim 2). The elastic body is, for example, a relatively hard coil spring. Further, at least the second member of the moving body is formed of an insulating material. The first member further includes a portion on the movable grip portion side and a portion to which the push spring is connected, and the portion on the movable grip portion side and the portion to which the spring is connected are a connecting ball portion and a connecting ball portion. It is good also as what was connected with the receiving recessed part. And the part where the elastic body of the 1st member was connected may also be formed with the insulating material.

As a result, since the longitudinal dimension of the movable body can be changed by the expansion and contraction of the elastic body, the protrusion is moved in the axial direction of the operating rod in the state where the object to be grasped is grasped by the movable grasping portion and the fixed grasping portion. By extending and contracting the elastic body and adjusting the longitudinal dimension of the moving body, the protrusion is held at the branch point between the extension portion and the portion along the axial direction of the operation rod in the through hole of the operation portion. can go.

  Further, when the elastic body is a pressing spring such as a compression coil spring, when the second member of the moving body is fixed, the elastic body is attached to the end side of the first member of the moving body by the pressing of the elastic body. It is possible to make the movable gripping portion biased toward the fixed gripping portion. Thus, even if the extended portion of the through hole is not finely branched, a slight positional deviation between the extended portion and the protruding portion can be absorbed by the expansion and contraction of the elastic body. Thus, the object to be grasped is pushed toward the fixed grasping part, so that the object to be grasped can be securely and firmly held between the movable grasping part and the fixed grasping part.

  As described above, according to the present invention, by moving the moving body along the axial direction of the operating rod, the movable gripping portion attached to one end in the longitudinal direction of the moving body becomes the fixed gripping portion of the head portion. On the other hand, since it moves in the direction far and near, it is possible to hold the object to be held between the fixed holding part and the movable holding part without releasing the operation rod, and to release the holding. Therefore, when the movable gripping part is brought close to the fixed gripping part, the head part will not swing left and right, and the high pressure overhead line etc. between the fixed part and the movable part is inclined with respect to the installation direction of the high pressure overhead line etc. It is possible to prevent the problem of gripping with a pinch. Furthermore, since the operating part for moving the moving body along the axial direction of the operating bar is provided on the other end side opposite to the gripping mechanism side in the longitudinal direction of the operating bar, the operating part is operated. It is also possible to carry out easily at the hands of workers. Therefore, the efficiency of the overall indirect hot line work can be improved and the work time can be shortened.

According to the invention, the head of the protruding portion that emerges from the through hole of the operation rod on the side surface of the operating rod, pushing the gripping mechanism side, by pulling on the opposite side of the gripping mechanism, the mobile Eventually, the movable gripping part attached to this moving body can be moved closer to the fixed gripping part, and the projecting part can be held and moved by an operator, so that the movement of the movable gripping part can be restricted, No other indirect hot-line tool is required to release the restriction, and the operation of the gripping mechanism becomes simpler, further improving the efficiency of the overall indirect hot-line work and shortening the work time. Is possible.

Further, according to the present invention, the projecting portion is moved along the axial direction of the operation rod of the through hole, the movable gripping portion at the tip of the moving body is brought close to the fixed gripping portion, and the fixed gripping portion and By moving the projecting part to the extension part of the through hole while gripping the object to be gripped with the movable gripping part, the projecting part comes into contact with the edge part located on the axial direction side of the operation rod of the extension part of the through hole. Further, it is possible to regulate the movement of the movable body having the protruding portion and the movable gripping portion in the axial direction of the operation rod. Then, by moving the protruding portion from the extended portion of the hole to the portion along the axial direction of the operating rod, the protruding portion is released from the restriction due to the contact with the edge portion on the axial direction side of the operating rod. In addition, it becomes possible to move the moving body having the protruding portion and thus the movable gripping portion in the axial direction of the operation rod. Therefore, the movement along the axial direction of the operating rod of the moving body can be restricted or released by the operation of moving the protrusion at the worker's hand. It becomes possible to further improve efficiency and shorten work time.

In particular, according to the second aspect of the present invention, since the longitudinal dimension of the movable body can be changed by the expansion and contraction of the elastic body, the protrusion is obtained in the state where the object to be grasped is grasped by the movable grasping portion and the fixed grasping portion. By moving the portion in the axial direction of the operating rod and expanding and contracting the elastic body to adjust the longitudinal dimension of the moving body, the projecting portion is part of the through hole of the operating portion along the axial direction of the operating rod. It can be taken to the branch point with the extension. Further, when the elastic body is a pressing spring such as a compression coil spring, when the second member of the moving body is in a fixed state, the elastic body is attached to the end side of the first member of the moving body by the pressing of the elastic body. It is possible to make the movable gripping portion biased toward the fixed gripping portion. Therefore, even if the extended portion of the through hole is not finely branched, a slight positional shift between the extended portion and the protruding portion can be absorbed by the contraction of the elastic body, and the movable gripping portion is Since the object to be grasped can be pushed toward the fixed grasping part, the object to be grasped can be securely and firmly held between the movable grasping part and the fixed grasping part.

FIG. 1 is an explanatory view showing the overall configuration of an example of a gripping tool according to the present invention. FIG. 2 illustrates a movable body of the gripping tool and a movable gripping portion attached to the tip of the movable body. FIG. 2A is an overall configuration diagram of the movable body and the movable gripping portion, and FIG. ) Is an enlarged cross-sectional view showing a state in which the head of the moving body is loosely fitted to the movable gripping portion so that the moving body can rotate, and FIG. 2C is a first view of the first member of the moving body. It is an expanded sectional view showing the state where the 1 constituent member and the 2nd constituent member were rotatably connected by the connecting ball part and the connecting ball part receiving recess. FIG. 3 illustrates a through hole formed in the operation rod of the gripping tool, and FIG. 3A is an enlarged view showing a state in which the through hole is formed on the side surface of the columnar operation rod. FIG. 4B is a plan development view of a part of the operation rod showing a state in which the through-hole shown in FIG. FIG. 4 shows a state in which the gripping mechanism and the second member of the operation rod are shifted by 90 degrees in order to show a mode in which the movement of the movable gripping part is regulated after the movable gripping part of the gripping tool is brought close to the fixed gripping part. FIG. 4A is a first process diagram showing a state in which the protruding portion is located on the side opposite to the fixed gripping portion of the portion along the axial direction of the operation rod of the through hole. 4 (b) is a second process diagram showing a state in which the protruding portion at the position of FIG. 4 (a) is moved to the fixed gripping side in the portion along the axial direction of the operating rod of the hole. FIG. 4C is a third process diagram illustrating a state in which the protruding portion at the position of FIG. 4B is moved to the extended portion side of the hole to restrict movement of the moving body along the axial direction of the operating rod. is there.

  Embodiments of the present invention will be described below with reference to the drawings.

  In FIG. 1, an overall configuration of an indirect hot-line gripping tool 1 is shown as an example of a gripping tool according to the present invention. The indirect live wire gripping tool 1 is suitable for use in indirect live wire work, and is a to-be-gripped object 2 that is a cylindrical linear body (a high-voltage overhead wire as an example of the to-be-gripped object 2 as will be described later in FIG. 4). 2a is shown)).

  The configuration of the indirect live wire gripping tool 1 will be described with reference to FIG. 1. A relatively long insulating operation rod 3 and a grip provided on one end side (tip side) of the insulating operation rod 3 in the longitudinal direction. It is basically composed of the mechanism 4.

  The insulating operation rod 3 is a linear rod-shaped body made of an insulating material, and in order to prevent an electric shock of an operator who performs an indirect hot-wire operation, an umbrella-shaped safety limit collar is provided at a substantially intermediate portion in the longitudinal direction. 31 is provided. The safety limit collar 31 is for clarifying a boundary between a portion that can be gripped by a worker and other portions. Further, the insulating operation rod 3 is provided with an umbrella-shaped draining collar at a position farther than the safety limit collar 31 (the base end side of the insulating operation rod 3) with respect to the gripping mechanism 4 as a measure against rainwater transmitted through the insulation operation rod during rain. 32 is provided. And the site | part of the base end side rather than the draining collar 32 of the insulation operation stick | rod 3 becomes the grip part 33 which an operator can hold | grip with a hand. Further, a connecting portion 34 for connecting to another indirect hot wire tool is provided at the base end of the insulating operation rod 3.

  The gripping mechanism 4 has a substantially C-shape and a distal end portion of the head portion 41 constituting the fixed grip portion 42, and a base end side at a position facing the fixed grip portion 42 and the fixed grip portion 42. A movable gripping portion 45 is provided which is arranged between the portion 43 and movable in a direction approaching or closing the fixed gripping portion 42.

  The fixed grip portion 42 forms a part of the head portion 41, and has a substantially inverted U shape having a tip portion 42a extending toward the movable grip portion 45 as shown in FIG. Further, as shown in FIG. 2, the movable gripping portion 45 has a groove portion 45 a formed along the axial direction of the insulating operation rod 3, and this groove portion 45 a is connected to the fixed gripping portion 42 of the head portion 41. It has a concave shape that can be engaged with a linear portion 44 connecting the base end portion 43. Thus, since the movable gripping portion 45 is in a state where the groove portion 45a is engaged with the linear portion 44 of the head portion 41, rotation about the movable body 6 described later is restricted.

  By the way, the head portion 41 of the gripping mechanism 4 and the one end side portion of the insulating operation rod 3 are integrated, and the moving body accommodating space 5 that extends linearly along the axial direction of the insulating operation rod 3 is formed. Have. One end in the longitudinal direction of the movable body accommodating space 5 reaches the vicinity of the connecting portion 34 of the grip portion 33 of the insulating operating rod 3, and the other end in the longitudinal direction of the movable body accommodating space 5 is the base of the head portion 41. It penetrates through the end side portion 43 and opens on the surface of the base end side portion 43 on the fixed grip portion 42 side. In this embodiment, the shape of the opening 5a of the mobile body accommodating space 5 is circular corresponding to the cross-sectional shape of the mobile body 6 described later.

  A moving body 6 shown in FIG. 2A is stored in the moving body storage space 5. The movable body 6 is a rod-like body that extends linearly along the axial direction of the insulating operation rod 3. In this embodiment, the movable body 6 has a circular column shape in cross section. The outer diameter dimension of the movable body 6 is slightly smaller than the inner diameter dimension of the movable body accommodating space 5, and the movable body 6 moves smoothly in the movable body accommodating space 5 along the axial direction of the insulating operation rod 3. It is possible.

  As shown in FIG. 4, one end side portion of the moving body 6 in the longitudinal direction can be projected and retracted from the opening 5 a of the base end side portion 43 of the head portion 41 toward the fixed grip portion 42. As shown in FIG. 2A in particular, the movable gripping portion 45 described above is attached to the end portion. As a result, the movable gripping part 45 can also move in a direction closer to the fixed gripping part 42 as the moving body 6 moves along the axial direction of the insulating operating rod 3.

  As shown in FIG. 2A, the moving body 6 includes a first member 61 to which the movable gripping portion 45 is attached, a second member 62 having a protruding portion 91 of the operation portion 9 described later, and these The first member 61 is connected to the end in the longitudinal direction of the first member 61 and the end in the longitudinal direction of the second member 62, and can be expanded and contracted in the axial direction of the movable body 6, but is a relatively hard elastic body. The coil spring 63 is configured. However, the elastic body is not necessarily limited to the coil spring 63 and can be expanded and contracted in the axial direction of the moving body 6, but may be relatively hard. The second member 62 of the moving body 6 is formed of an insulating material in order to prevent an electric shock of an operator.

  Then, the indirect live-line gripping tool 1 is used in this embodiment as a mechanism for allowing the entire movable body 6 or at least the second member 62 of the movable body 6 to rotate while the movable gripping portion 45 is stationary. 2 (b) or the rotation mechanism shown in FIG. 2 (c). Note that the rotating mechanism shown in FIG. 2C does not appear in the moving body 6 shown in FIG.

  The rotating mechanism of the moving body 6 shown in FIG. 2B includes a hole portion 7 formed in the movable gripping portion 45 and an end portion of the first member 61 of the moving body 6 (end portion on the gripping mechanism 4 side). And a head 6a provided on the head. The head 6 a of the moving body 6 has a disk shape having a larger outer diameter than the first member 61 and a slight thickness. The hole 7 of the movable gripping portion 45 has an inner diameter that is slightly larger than the outer diameter of the first member 61 of the movable body 6 and smaller than the outer diameter of the head 6a, and a small-diameter hole 71 that communicates with the outside. The large-diameter hole 72 is located on the back side of the small-diameter hole 71 and is slightly larger than the outer diameter of the head 6a of the movable body 6. Thereby, when the head 6a of the moving body 6 is accommodated in the large-diameter hole 72 of the hole 7 of the movable gripping part 45, the moving body 6 can rotate around its own axis in both directions. ing.

  The rotating mechanism of the moving body 6 shown in FIG. 2C includes a first configuration member 611 in which the first member 61 is further positioned on the movable gripping portion 45 side, and a second configuration in which the first member 61 is positioned on the second member 62 side. The first component member 611 is provided with a connecting ball portion 81 at the opposite end to the movable gripping portion 45, and the second component member 612 is connected to the connecting ball portion 81 at the opposite end to the coil spring 63. Is formed with a connecting ball receiving recess 82 which is relatively loosely fitted. Thereby, when the connection ball portion 81 of the first component member 611 is accommodated in the connection ball portion receiving recess 82 of the second component member 612, the second component member 612 and the second member 62 of the moving body 6 are It can rotate in both directions around its own axis. When the rotating mechanism of the moving body 6 shown in FIG. 2C is used, the moving body 6 and the movable grip 45 are integrated, and the first component member 611 of the moving body 6 rotates. It is designed not to be overwhelmed.

  Further, the indirect live-line gripping tool 1 is shown particularly in FIGS. 3 and 4 in the grip portion 33 of the insulating operation rod 3 in order to make the movable body 6 movable along the axial direction of the insulating operation rod 3. As described above, the operation unit 9 is provided.

  The operation unit 9 includes a protrusion 91 protruding from the side surface of the second member 62 of the moving body 6 and a through hole 92 formed on the side surface of the grip portion 33 of the insulating operation rod 3.

  In this embodiment, as shown in FIG. 2A, the protruding portion 91 is a disc having an outer diameter larger than the lateral width of the portion 921 along the axial direction of an insulating operation rod described later of the through-hole 92. And a shaft portion 912 extending from the head portion 911 and having an outer diameter slightly smaller than the lateral width of the portion 921 along the axial direction of the insulating operation rod. Furthermore, in this embodiment, as shown in FIG. 2A, screw holes 621 are formed in the side surface of the second member 62 of the moving body 6, and the distal end side of the shaft portion 912 of the protruding portion 91. A screw portion is formed on the shaft portion 912, so that the shaft portion 912 of the protruding portion 91 can be screwed into the screw hole 621 of the second member 62 of the moving body 6. Therefore, for example, after the moving body 6 that does not have the protruding portion 91 is inserted from the opening 5a of the base end side portion 43 of the head portion 41, the protruding portion 91 can be inserted from the through hole 92 side and attached to the moving body 6. It becomes. The head portion 911 of the protruding portion 91, when attached to the moving body 6, is in a position protruding outward from the opening of the through hole 92 of the insulating operation rod 3, as shown in FIG. It is easy to pick with your fingers.

  The through hole 92 is provided on the side surface of the grip portion 33 of the insulating operation rod 3, for example, on the side opposite to the distal end portion 42 a of the fixed grip portion 42, and communicates with the moving body accommodating space 5 of the insulating operation rod 3. doing. As shown in FIG. 3, the through-hole 92 extends in the circumferential direction of the insulating operation rod 3 from the portion 921 along the axial direction of the insulating operation rod and the portion 921 along the axial direction of the insulating operation rod. And a plurality of extension portions 922a to 922g.

  A portion 921 along the axial direction of the insulating operation rod of the through hole 92 is a portion along the axial direction of the insulating operation rod at the position A1 of the end on the coupling portion 34 side (the side opposite to the movable gripping portion 45 side). When the shaft portion 912 of the protruding portion 91 is at the position A1 of the end of the connecting portion 34 side of 921, the movable gripping portion 45 is set so as to be farthest from the fixed gripping portion 42, and the draining collar 32 side (the movable gripping portion 45) is set. When the shaft portion 912 of the protruding portion 91 is located at the end position A8 on the draining collar 32 side of the portion 921 along the axial direction of the insulating operation rod, the movable gripping portion 45 is fixedly gripped. It is set to be closest to the part 42.

  In this embodiment, the extension portions 922a to 922g of the through-hole 92 extend in a staggered manner from the portions 921 along the axial direction of the insulating operation rod, as shown in FIGS. 3 (a) and 3 (b). Yes. That is, the extension portion 922a extends from the position A2 of the portion 921 along the axial direction of the insulating operation rod to the right side in the drawing, and the extension portion 922b is the position of A3 of the portion 921 along the axial direction of the insulation operation rod. The extension portion 922c extends from the position A4 of the portion 921 along the axial direction of the insulating operation rod to the right side of the drawing, and the extension portion 922d extends along the axial direction of the insulation operation rod. The portion 921 extends from the position A5 to the left in the drawing, the extension portion 922e extends from the position A6 of the portion 921 along the axial direction of the insulating operating rod to the right in the drawing, and the extending portion 922f extends from the insulating operating rod. The extension portion 922g extends from the position A8 of the portion 921 along the axial direction of the insulating operating rod to the right side of the drawing. .

  The arrangement of A2 to A8, which is a branch point from the portion 921 to the extension portion 922b along the axial direction of the edge operation rod of the through hole 92, is to be gripped by the fixed grip portion 42 and the movable grip portion 45. It is determined in consideration of the diameter size of a plurality of object titles considered as the object 2. That is, when the shaft portion 912 of the projecting portion 91 is located at the position A2 of the portion 921 along the axial direction of the insulating operation rod, the fixed grip portion 42 and the movable grip portion 45, and the shaft portion 912 of the projecting portion 91 is located at the position A3 of the portion 921 along the axial direction of the insulating operation rod. When the object can be gripped by the fixed gripping portion 42 and the movable gripping portion 45 and the shaft portion 912 of the protruding portion 91 is at the position A4 of the portion 921 along the axial direction of the insulating operation rod, An object different from the above-described two of the objects 2 can be gripped by the fixed grip portion 42 and the movable grip portion 45. The same applies to the case where the shaft portion 912 of the protruding portion 91 is located at positions A5 to A8 of the portion 921 along the axial direction of the insulating operation rod.

  In this embodiment, the extension portions 922a to 922g of the through-hole 92 are larger than the outer diameter of the shaft portion 912 of the protruding portion 91 and are outside the head 911 of the protruding portion 91, as shown in FIG. A circular portion smaller than the diameter is provided at the end in the extending direction of the extending portions 922a to 922g. As a result, when the shaft portion 912 of the protruding portion 91 moves to any position between B1 and B7 of the circular portion of the extended portion 922, the axial force of the insulating operation rod 3 is applied to the movable gripping portion 45. Even so, the shaft portion 912 of the projecting portion 91 abuts on the periphery of the circular portion of the extended portions 922a to 922g, and further movement in the axial direction of the insulating operation rod 3 is restricted (locked). The movable gripping portion 45 is prevented from being separated from the fixed gripping portion 42 as the object 2 is removed.

  A process for gripping the high-voltage overhead wire 2a of the object to be gripped 2 using the indirect live wire gripping tool 1 having the above configuration will be described below with reference to FIG.

  First, as shown in FIG. 4A, the position A1 of the portion 921 along the axial direction of the insulating operation rod of the through hole 92 of the shaft portion 912 of the protrusion 91 (shown in FIG. 3B). To move the movable gripping portion 45 to the position farthest from the fixed gripping portion 42 and expand the space between the distal end portion 42a of the fixed gripping portion 42 and the movable gripping portion 45, and then move and fix the head portion 41. The holding portion 42 is hooked on the high-voltage overhead wire 2a, and the inverted U-shaped curved surface of the fixed holding portion 42 on the movable holding portion 45 side is in contact with the side surface of the high-voltage overhead wire 2a.

  Next, the protrusion 91 is moved along the axial direction of the insulating operation rod 3 from the position A1 in FIG. . As a result, the movable body 6 connected to the projecting portion 91 also slides without rotating toward the gripping mechanism 4, so the movable gripping portion 45 attached to the end of the movable body 6 on the longitudinal direction side is also fixed. The movable gripping portion 45 moves in the form of approaching the gripping portion 42, and comes into contact with the high-voltage overhead wire 2a as shown in FIG. At this time, since the coil spring 63 that connects the first member 61 and the second member 62 of the moving body 6 is relatively hard, the coil spring 63 hardly contracts. Since the movable gripping part 45 can be brought close to the fixed gripping part 42 with substantially the same amount of movement, the amount of movement of the movable gripping part 45 and the proximity state of the movable gripping part 45 to the fixed gripping part 42 can be accurately recognized. It is easy to do.

  When the movable gripping portion 45 is in contact with the high-voltage overhead wire 2a, the shaft portion 912 of the protruding portion 91 is exactly at the position A4 of the portion 921 along the axial direction of the insulating operation rod of the through hole 92. As shown in FIG. 4C, the head portion 911 of the projecting portion 91 is held and the shaft portion 912 of the projecting portion 91 is moved to the position of the circular portion shown as B3 of the extended portion 922c. .

  On the other hand, when the movable gripping portion 45 is in contact with the high-voltage overhead wire 2a, the shaft portion 912 of the protruding portion 91 is displaced from the position A4 of the portion 921 along the axial direction of the insulating operation rod of the through hole 92. For example, the operation of pushing down or pushing up the protrusion 91 to the closest position by holding the head 911 of the protrusion 91 is performed. Thereby, although the moving body 6 does not move, the coil spring 63 constituting the moving body 6 expands or contracts, and the protrusion 91 is an A4 of the portion 921 along the axial direction of the insulating operation rod of the through hole 92. Therefore, the shaft portion 912 of the protruding portion 91 can be moved to the position of the circular portion shown as B3 of the extended portion 922c, as shown in FIG. 4C.

  As shown in FIG. 4C, when the shaft portion 912 of the projecting portion 91 is in the position of the circular portion shown as B3 of the extended portion 922c, the insulating operating rod 3 is Even if a force in the axial direction is applied and the force is transmitted to the moving body 6, the shaft portion 912 of the protruding portion 91 connected to the moving body 6 is in the circular portion of the extension portion 922 of the through hole 92. Therefore, the shaft portion 912 of the projecting portion 91 abuts on the peripheral edge of the circular portion of the extension portion 922c, and further movement of the insulating operation rod 3 in the axial direction is restricted (locked), so that the high-voltage overhead wire 2a It is prevented that the movable gripping part 45 moves away from the fixed gripping part 42 so as to be separated from the fixed gripping part 42.

  In addition, when the coil spring 63 that constitutes the moving body 6 is a compression coil spring, even if the shaft portion 912 of the protruding portion 91 is in the position of the circular portion indicated as B3 of the extension portion 922c, Since the second member 62 is fixed, the coil spring 63 continues to push the first member 61 and thus the movable gripping portion 45 against the fixed gripping portion 42, so that the fixed gripping portion 42 and the movable gripping portion 45 are connected to the high-voltage overhead wire 2 a. Can be held securely and firmly.

  Then, by holding the head portion 911 and the like of the protruding portion 91 by hand, the shaft portion 912 of the protruding portion 91 is moved from the extended portion 922 of the hole 92 to the portion 921 along the axial direction of the insulating operation rod. The restriction (locking) of the movement of the insulating operation rod 3 in the axial direction relative to the shaft portion 912 of the protruding portion 91 is released. Therefore, both the restriction of the movement of the movable body 6 and the movable gripping part 45 in the axial direction of the insulating operating rod 3 and the release of the restriction can be performed with the head 911 of the protruding part 91 of the operation part 9 and the like. it can.

  When the object to be grasped 2 is the high-voltage overhead wire 2 a and the high-voltage overhead wire 2 a is grasped by the fixed grasping portion 42 and the movable grasping portion 45, the shaft portion 912 of the protruding portion 91 is an insulating operation rod of the through-hole 92. Although it has been described in the case where the position A4 of the portion 921 along the axial direction is reached, when the other gripping object 2 is gripped by the fixed gripping portion 42 and the movable gripping portion 45, the shaft portion of the protruding portion 91 When 912 is located at positions A2, A3, A5 to A8 of the portion 921 along the axial direction of the insulating operation rod of the through hole 92, the same function is performed.

1 Indirect hot-line gripping tool (grip tool)
2 Object to be grasped 2a High-voltage overhead wire 3 Insulation operation rod (operation rod)
DESCRIPTION OF SYMBOLS 4 Grasp mechanism 41 Head part 42 Fixed grip part 43 Base end side part 45 Movable grip part 5 Mobile body accommodation space (accommodation space)
6 moving body 6a head 61 first member 62 second member 63 coil spring (elastic body)
7 hole portion 71 small diameter hole portion 72 large diameter hole portion 81 connecting ball portion 82 connecting ball portion receiving recessed portion 9 operation portion 91 protruding portion 911 head portion 912 shaft portion 92 through hole 921 portion along the axis of the insulating operation rod of the through hole 922a to 922g through hole extension

Claims (2)

A rod-shaped control bar;
A gripping tool comprising: a head portion having a fixed grip portion formed on a distal end side thereof; and a gripping mechanism having a movable grip portion that grips an object to be gripped with the fixed grip portion by approaching the fixed grip portion.
The operation rod and the head portion of the gripping mechanism are integrated,
The operation rod and the proximal end portion of the head portion have a series of accommodating spaces extending along the axial direction of the operating rod, and the accommodating space opens to a proximal end portion of the head portion,
A rod-shaped movable body is accommodated in the accommodating space so as to be movable along the axial direction of the operation rod, and a portion on one end side in the longitudinal direction of the movable member is opened from an opening of a proximal end portion of the head portion. It is possible to go in and out toward the fixed gripping part,
The movable gripping part is attached to one end in the longitudinal direction of the moving body,
The longitudinal direction of the gripping mechanism of the control rod have a operating unit for moving along the movable body on the opposite side in the axial direction of the operating rod,
The operation unit is
A through-hole extending at least on the side of the operating rod along the axial direction of the operating rod and communicating with the accommodating space;
A protruding portion that protrudes from the side surface of the movable body and has a head appearing on the side surface of the operating rod from the through hole of the operating rod;
Have
Furthermore, the movable body and the movable gripping portion are attached so that the movable body can rotate about its own axis.
In the through hole, one or more extending portions extending in the circumferential direction of the operation rod are formed,
A gripping tool that restricts movement of the movable body along the axial direction of the operation rod by rotating the movable body and moving the protruding portion to an extended portion of the through hole. The moving body includes a first member to which the movable grip portion is attached and a second member to which the protruding portion is provided, and the first member and the second member are elastic bodies. The gripping tool according to claim 1 , wherein the gripping tool is connected to each other.

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