JP2020036404A - Coupling tool for indirect hot line tool - Google Patents

Abstract

To provide a coupling tool for an indirect hot line tool which is connected to an existing indirect hot line tool, prevents the indirect hot line tool from falling down to the bottom of an electric pole even if the indirect hot line tool is separated from a hand during indirect hot line work, and further prevents efficiency of the indirect hot line work from being reduced by devising the indirect hot line tool for fall prevention.SOLUTION: A coupling tool 1 for an indirect hot line tool comprises: a coupling instrument 2 including a coupling part 20 connectable to a connection part which is provided at a proximal end side of a rod body in the indirect hot line tool; and a hook instrument 3 including a hook part 30 which is hooked to a hooking object. The coupling instrument 2 and the hook instrument 3 are coupled by a string-like member 8, and a length adjusting instrument 45 for adjusting a length of the string-like member 8 from the coupling instrument 2 to the hook instrument 3 is provided in the hook instrument 3.SELECTED DRAWING: Figure 1

Description

  INDUSTRIAL APPLICABILITY The present invention can be attached to a connection portion provided on the base end side of a rod body of an existing indirect live tool such as a hot stick or an insulating yoke, and a connection for preventing the indirect live tool from dropping. About the tool.

  In the indirect hot-line operation, as shown in Patent Literature 1, an operator rides on an elevating body having a working floor such as a bucket, a basket, and a platform of an aerial work vehicle, and indirectly moves a hot stick or the like from the elevating body. Work may be performed by operating hot-line tools.

  If the indirect hot-line tool is accidentally dropped while performing indirect hot-line work in such a high place, the indirect hot-line tool may be charged, such as overhead contact lines or telephone pole mounting equipment. In such a case, an electric accident such as a short circuit may occur, or an indirect live tool may hit a person located below the work site to cause injury.

  In this regard, as shown in Patent Literature 2, a hook with a cord is incorporated in the base of the indirect hot-line tool, and the hook drawn out from the base of the indirect hot-line tool is hooked to a predetermined target. Has already been considered.

  Further, as shown in Patent Literature 3, a tool hanging tool having a connection portion connectable to a twist lock of an insulating rod of an indirect hot-line tool, wherein a hook is attached to a tip of a rope attached to a ring portion. By having the hanging portion provided on the main body, and engaging the hook with the ring portion to form an annular shape, the tool for indirect hot wire in a state where the tool hanging tool is connected can be hooked on a predetermined target. Such a configuration has already been considered.

JP 2007-246180 A JP 2018-68053 A JP 2008-17585 A

  However, the configuration of the indirect hot-line insulated operating rod disclosed in Patent Document 2 is based on the premise that a structural change is made to the indirect hot-line insulated operating rod itself, and therefore cannot be used with existing indirect hot-line tools. There is an inconvenience. In addition, the invention according to Patent Document 2 aims to prevent the indirect hot-line insulation operation rod from being in the way even when the indirect hot-line insulation operation rod is not used. It cannot be said that it is an issue.

  The invention according to Patent Literature 3 also has an object to prevent the indirect hot-wire insulated operation rod from being obstructed even when the indirect-hot-wire insulated operation rod is not used. Accordingly, in the usage example of the tool hanging tool disclosed in Patent Literature 3, only a mode in which the string-shaped member is used in a ring shape by engaging a hook with a ring portion of the tool hanging tool is shown. . As an example of use in which the tool for indirect hot-line operation to which the tool suspender of Patent Document 3 is connected can be used even during indirect hot-line operation, an annular string-shaped member is attached to the arm of a worker. Only those embodiments are shown.

  For this reason, the overall length of the string-shaped member included in the tool suspending tool disclosed in Patent Document 3 is relatively short, and the hook of the tool suspending tool is attached to the side of a lifting body such as a bucket of an aerial work vehicle. When using the indirect hot-line work tool with this tool hanging tool connected in this state, the string-like member is immediately stretched, so the workable range is narrow and the work efficiency is not good. Such a problem may occur. On the other hand, if the length of the cord-like member is merely increased, an unexpected accident may occur due to, for example, the worker's feet being caught on the cord-like member that is pulled around the work floor surface of the elevating body such as the bucket. is there.

  Therefore, the present invention is connected to the existing indirect hot-line tool, to prevent the indirect hot-line tool from falling down from the work site even if the tool is separated from the hand during the indirect hot-line work, and The main task is to provide a connector for an indirect hot-line tool that prevents the efficiency of the indirect hot-line operation from being deteriorated due to a device for preventing the indirect hot-line tool from dropping. .

  In order to achieve the above object, a connecting tool for an indirect hot-line tool according to the present invention includes a connecting device having a connecting portion connectable to a connecting portion provided on an end side of a rod of the indirect hot-line tool, A hooking device having a hooking portion for hooking on a hooking target, wherein the connecting device and the hooking device are indirect hot-line tools connected by a string-shaped member, and the hooking device is And a length adjuster for adjusting the length of the cord-shaped member from the connecting device to the hooking device (claim 1). Examples of the tool for the indirect hot wire include a hot stick and an insulating plug.

  Thereby, when performing indirect hot-line work using the indirect hot-line tool, the indirect hot-line tool is connected to the connecting device of the connecting device, and the connecting device is connected to the hooking device hooked to the hooking target. Because the indirect hot-line tool is separated from the worker's hand because it is connected by the string-like member, the connecting tool and, consequently, the indirect hot-line tool are hung on the hooking target. The tool for indirect hot-line is prevented from dropping from below. And the length between the hooking device and the connecting device of the string-shaped member is controlled by the length adjuster of the hooking device so that the string-shaped member is not stretched when the worker performs the indirect hot-line operation. Or, if the string-like member is drawn around the floor of the work site in the form of meandering or winding a thorn, the feet of the worker become unstable, so that it does not hinder the indirect hot-line work. , Can be adjusted.

  In the connecting tool for an indirect hot-line tool according to claim 2, the connecting tool is separate from the portion having the connecting portion and the portion having the connecting portion, and the string-shaped member is connected. A portion having the connection portion and the base portion are connected by a rotation axis, and the portion having the connection portion and the base portion are rotatable with each other about the rotation axis. The hooking device further includes an interposition portion for connecting the hook portion and the length adjuster, and the interposition portion is separate from the hook portion, and the string-shaped member is connected to the hook portion. The hook portion and the interposition portion are connected by a rotation shaft, and the hook portion and the interposition portion are rotatable about the rotation shaft.

  As described above, the hooking portion and the interposition portion of the hooking device are separated from each other, and the hooking portion and the interposition portion are not only configured to be rotatably connected to each other by the rotating shaft, but also have a connecting portion of the connecting device. The part and the base are separated from each other, and the part having the connecting part and the base are connected rotatably to each other by the rotating shaft. Can not rotate with each other, the part with the connecting part of the connecting device and the base can also rotate with each other, so the worker notices that the rotation has become impossible between the hooking part and the intervening part. Even if the operation is continued without performing, it is possible to prevent the kink from being generated in the string-shaped member.

  In the connecting tool for an indirect hot-line tool according to claim 3, an insertion portion for inserting the cord-like member, a lock for displacement of the cord-like member inserted in the insertion portion in an insertion direction, and this lock. And a link mechanism for canceling.

  With this, the string-shaped member is inserted into the insertion portion of the length adjuster in a state where the lock is released, and after the string-shaped member is pulled out of the length adjuster from the side opposite to the connecting device, the link mechanism is used. By actuating the lock, the hooking device can be connected to the connecting device by the string-like member, and the length of the string-like member between the connecting device and the hooking device can be adjusted with the lock by the link mechanism. It can be adjusted by releasing it. Further, the operation of the link mechanism can lock and release the displacement of the cord-like member in the insertion portion, so that even after the length of the cord-like member between the connecting device and the hooking device is set once, it can be easily re-started. It is possible to adjust.

  In the connecting tool for an indirect hot-line tool according to claim 4, the hook portion is a frame body having two plate-shaped portions, and a hook attached to one end of the two plate-shaped portions. Having a stop claw, wherein the locking claw is attached to a rail groove formed at an end portion of the plate-shaped portion, and the locking claw moves along the rail groove, so that The engagement and the release of the engagement are performed.

  Accordingly, when the object to be hooked is an elevating body such as a bucket of an elevating device, the hooking portion of the hooking device is arranged such that the plate-shaped portion having the locking claw of the frame body is on the inside of the upright wall of the elevating body. After hooking the frame, it is possible to move the locking claw along the rail groove so that the locking claw can be engaged with the lower end of the end of the standing wall of the elevating body. Engagement with the object is performed more reliably.

  Instead of the hooking part according to claim 4, in the connecting tool for an indirect hot-line tool according to claim 5, the hooking part has an inner peripheral surface that can contact the outer peripheral surface of the hooking target. It is characterized by having a head provided with a tip portion, and a movable portion for holding the hooking target in a state where an outer peripheral surface is in contact with an inner peripheral surface of the tip portion.

  In this way, the hook portion is formed as a hook-like mechanism of a key claw, so that the hooking target is not only a horizontal bar having one open end such as a scaffold bolt of a telephone pole, but also a horizontal direction bridged between vertical poles. Can be hooked on the hooking target. For this reason, when performing indirect hot-line work, it is not troublesome to catch the hook portion of the hook of the connector.

  As described above, according to the present invention, when performing the indirect hot-line operation using the indirect hot-line tool, the indirect hot-line tool is connected to the connecting device of the connecting device, and the connecting device is pulled. Since the indirect hot-line tool is separated from the worker's hand because it is connected to the hooking device of the connecting device hooked on the hooking object by the string-shaped member, the connecting object and therefore the indirect hot line are hooked on the hooking object Since the tool is suspended, the indirect hot-line tool is prevented from dropping downward from the work site. For this reason, even when a worker gets on an elevating body such as a bucket of an aerial work vehicle and puts out the indirect hot-line tool outside the elevating body, the indirect hot-line operation can be performed with ease. . Furthermore, according to the present invention, the length of the string-shaped member between the hooking device and the connecting device is controlled by the length adjuster of the hooking device so that the string-shaped member is used when the worker performs indirect hot-line work. To prevent the cable from being stretched immediately, or to prevent an unexpected accident from occurring when the cord-like member is pulled around the floor of the work site in a manner that makes the feet of the worker unstable. , Can be adjusted. Therefore, it is possible to prevent the efficiency of the indirect hot-line operation from being deteriorated due to the connection of the connecting device and the hooking device by the string-shaped member.

  In particular, according to the second aspect of the present invention, the hooking portion and the interposition portion of the hooking device are separated from each other, and the hooking portion and the interposition portion are rotatably connected to each other by a rotating shaft. The part with the connecting part of the device and the base are separate parts, and the part with the connecting part and the base are connected rotatably to each other by the rotating shaft. Even if the hook portion and the interposition portion cannot rotate with each other, the portion having the connection portion of the connecting device and the base portion can also rotate with each other, so that rotation between the hook portion and the interposition portion is not possible. In particular, even if the worker continues working without noticing, it is possible to prevent kink from being generated in the string-shaped member.

  In particular, according to the invention described in claim 3, the cord-shaped member is inserted into the insertion portion of the length adjuster in a state where the lock is released, and the cord-shaped member is formed from the side of the length adjuster opposite to the connecting device. After the member is pulled out, the locking device is actuated to lock the hooking device so that the hooking device can be connected to the connecting device by the string-like member. The length can be adjusted by releasing the lock with the link mechanism. Further, the operation of the link mechanism can lock and release the displacement of the cord-like member in the insertion portion, so that even after the length of the cord-like member between the connecting device and the hooking device is set once, it can be easily re-started. It is possible to adjust.

First Embodiment As a first embodiment of a connecting tool for an indirect hot-line tool according to the present invention, a configuration in which a hook device having a hook portion that can be hooked on a predetermined shape side of an elevating body of an aerial work vehicle is shown. FIG. (A) shows a state before connecting the connecting device of the connecting tool of the indirect hot-line tool of the first embodiment to the connecting portion of the hot stick, and (b) shows the state of the indirect hot-line tool of the first embodiment. It is explanatory drawing which showed the state after connecting the connection tool of the connection tool to the connection part of a hot stick. It is explanatory drawing which showed the hook part which comprises the hook device of the connection tool of the tool for indirect hot-line tools of Example 1, (a) shows the frame of a hook part and a latching claw, (b) It is explanatory drawing which showed the rail groove | channel formed in the frame of the hook part, the cross section of the locking claw, and the pin. It is explanatory drawing which showed the length adjuster which comprises the hook of the connection tool of the tool for indirect hot-line tools of Example 1, and (a) shows that a rope shift | deviates in the direction of an arrow by lock by a length adjuster. FIG. 7B is a diagram illustrating a state in which the lock by the length adjuster has been released. (A) to (c) show the connecting tool for the indirect hot-line tool of the first embodiment, in which the locking claw moves along the rail groove of the frame of the hooking portion, and the locking claw moves in the aerial work vehicle. FIG. 5 is an explanatory diagram showing a process of engaging with an end of an upright wall of an elevating body or the like. It is explanatory drawing which showed the structure using the hooking tool which has the hooking part which can be hooked on the bar extended in a horizontal direction as Example 2 of the connection tool of the tool for indirect hot-line tools which concerns on this invention. (A) to (c) are explanatory views showing the process of tilting the movable body of the hooking portion of the hooking device and hooking the movable body on the rod in the indirect hot-line tool connecting tool of the second embodiment. It is.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 5 show a first embodiment of a connecting tool (hereinafter referred to as a connecting tool) 1 for a tool for an indirect hot wire to which the present invention is applied. The connecting tool 1 is used by being connected to an indirect hot-line tool used for the indirect hot-line operation during the indirect hot-line operation. The indirect hot-line tool includes, for example, a hot stick (also referred to as a common operation stick), an insulating yoke, and the like. First, as an example of the indirect hot-line tool, the hot stick 100 will be outlined with reference to FIG.

  The hot stick 100 shown in FIG. 2 includes a rod 101, a connecting portion 102 provided at a longitudinal end of the rod 101, and a connecting portion 103 provided at a longitudinal end of the rod 101. And is basically configured.

  The connecting portion 102 has a substantially columnar outer shape, and has a columnar movable protrusion 102a on a distal end surface thereof. The movable protrusion 102a is attached to the connecting part 102 so as to be able to advance and retreat along the axial direction of the connecting part 102, and is moved in the protruding direction from the connecting part 102 by a spring (not shown) built in the connecting part 102. Being energized. Further, the connecting portion 102 is provided with a pair of locking projections 102b, 102b on the peripheral surface. These locking projections 102b, 102b have a columnar shape, and one of the locking projections 102b and the other of the locking projections 102b are connected at a position on the opposite side in the circumferential direction of the connecting portion 102. The portion 102 protrudes outward in the radial direction. That is, one locking projection 102b and the other locking projection 102b project radially from a position 180 degrees out of phase.

  A portion of the rod 101 closer to the connection portion 103 than the connection portion 102 is provided with a flange 110 projecting from the outer peripheral surface of the rod 101 to the outside in the radial direction of the rod 101. A lock nut 111 that can move the outer peripheral surface of the rod 101 along the axial direction of the rod 101 is provided between the rod 102 and the part 102. Thus, by rotating the lock nut 111 in a predetermined direction, the connecting portion 102 and, for example, a connecting portion of a tip tool (not shown) can be securely fastened.

  The connecting portion 103 includes a substantially cylindrical tubular portion 105 having an opening 103a on the opposite side to the connecting portion 102 and having an internal space 104 communicating with the outside through the opening 103a. The inner space 104 has an inner diameter dimension into which the connecting portion 102 of the hot stick 100 and the connecting portion 20 of the connecting tool 1 described below can be inserted.

  In the cylindrical portion 105, a pair of slits 106, 106 are formed at positions substantially symmetric with respect to the center of the internal space 104 on the side of the opening 103a. These slits 106, 106 have a required dimension along the axial direction of the internal space 104 from the opening end of the opening 103a (for example, the same dimension as the dimension from the lock nut 111 side end of the connecting part 102 to the locking projection 102b). ) After the extension, it has a substantially T-shape extending along both sides of the cylindrical portion 105 in the circumferential direction. That is, the slit 106 is basically constituted by the slit portion 106a extending along the axial direction of the internal space 104 and the slit portion 106b extending along the circumferential direction of the tubular portion 105.

  As shown in FIGS. 1 and 2, the connecting device 1 of the first embodiment includes a connecting device 2 having a connecting portion 20, a hooking device 3 having a hooking portion 30 and a length adjuster 45, and a connecting device 2. It has a string-shaped member 8 for connecting the hooking device 3.

  The string-shaped member 8 is a rope having a total length of, for example, 2 m, and a desired strength is secured by weaving a plurality of linear members. Along with this, in the first embodiment, a cap-shaped terminal stopper 80 is attached to the end of the cord-shaped member 8 on the hooking instrument 3 side in order to prevent problems such as loosening of the woven linear member. ing. Moreover, since the string-shaped member 8 has a configuration in which a desired strength is obtained by knitting a plurality of linear members as described above, for example, vinyl or the like may be used as a material.

  In the first embodiment, the connecting device 2 includes a connecting portion 20, a lock nut 21, a flange 22, a base 23, a base 24, and a rod 25. That is, the portion having the connecting portion 20, the lock nut 21, the flange 22, the pedestal portion 23, the base 24, and the rod 25 is a portion having the connecting portion in the first embodiment. However, as long as the portion has at least the connecting portion 20 and the base portion 24, the portion having the connecting portion can be used even if the lock nut 21 and the flange 22 are not provided. The configuration and function of the connecting portion 20 (movable projection 20a, locking projection 20b) and the functions of the lock nut 21 and the flange 22 are the same as those of the connecting portion 102, the lock nut 111, and the flange 110 of the hot stick 100 described above. , The description of which is omitted.

  The connecting device 2 will be described in more detail. In the first embodiment, a base 23 having a larger outer diameter than the rod 25 is formed at the lower end of the rod 25, and the connecting part 20 is provided at the upper end of the rod 25. A flange 22 having a larger outer diameter than the rod 25 is formed between the connecting part 20 of the rod 25 and the base 23, and a lock nut is provided between the flange 22 of the rod 25 and the connecting part 20. 21 are mounted.

  In the connecting device 2, the base 23 and the base 24 are connected by the rotating shaft 26. In the first embodiment, one end of the rotating shaft 26 is rotatably accommodated in a space formed in the base 23 and is connected to the rotating shaft 26 in a space formed in the base 24. Are rotatably housed at the other end. One end (the side without the terminal stopper 80) of the cord-shaped member 8 is fixed to the base 24 on the side opposite to the base 23.

  With such a configuration, when an indirect hot-line tool such as the hot stick 100 is connected to the connecting portion 20 of the connecting device 2, the indirect hot-line tool such as the hot stick 100 is connected to a rod for work. Even when the body 101 is rotated about the axis, the portion of the connecting device 2 that has the connecting portion 20 rotates together, but the base portion 24 does not rotate together. When the rotation is not transmitted, and when the cord-shaped member 8 rotates, the connecting device 2 rotates together with the base 24, but the portion having the connecting portion 20 does not rotate together. It is possible to prevent the line tool from rotating carelessly. In addition, even when a rotation shaft 72 described later does not function, kink can be prevented from being generated in the string-shaped member 8.

  The hook device 3 includes the hook portion 30 and the length adjuster 45 as described above. Among these, in the first embodiment, the hooking unit 30 is configured to be engaged with the frame 31 in association with the lifting object having a work floor such as a bucket, a basket, and a platform of an aerial work vehicle. The frame 31 includes a pawl 33 and a base 37, and the frame 31 includes two plate-like portions 31a and 31b, and a connecting portion 31c provided between the plate-like portions 31a and 31b. Has become. When the frame body 31 is hooked on the side of the elevating body having the work floor of the aerial work vehicle, the plate-shaped part 31a is arranged outside the elevating body, and the plate-shaped part 31b is arranged inside the elevating body. You. The inner width dimension between the plate-like portions 31a and 31b is set in accordance with the configuration of the side portion of the elevating body and the maximum width, and FIGS. 1, 2, 3, and 5 correspond to an example thereof. The ones are shown.

  As shown in FIG. 5, the hooking portion 30 is configured such that the side of the elevating body to be hooked has a standing wall 201 forming a main body of the side of the elevating body, and a lateral direction inward from an upper end of the erecting wall 201. As an engagement means for engaging with the hooking target in the case where the extension portion 202 is constituted by an extension portion 202 and an inner portion 203 extending downward (toward the floor surface) from an end in the extension direction of the extension portion 202, As shown in FIG. 3, a rail groove 32 formed on the side of the end of the plate-shaped portion 31b and a locking claw 33 attached to the rail groove 32 are provided.

  As shown in FIGS. 3A and 3B, the rail groove 32 extends from a predetermined portion on the side surface of the end of the plate-shaped portion 31b to the tip, and then is directed toward the plate-shaped portion 31a at the tip. And is substantially L-shaped. As shown in FIG. 3 (b), the locking claw 33 has a curved plate 33a bent in a gentle curve and side plates 33b located at both ends of the curved plate 33a. A pin 34 is formed on the inner surface of the rail 33b so as to be movable along the rail groove 32 and can be attached to the rail groove 32. The curve of the curved plate 33a is set such that the inner surface of the curved plate 33a does not hit the plate-shaped portion 31b when the locking claw 33 moves along the rail groove 32 via the pin 34.

  Further, in the first embodiment, the support portion 35 is provided on the inner surface of the elevating body of the plate-shaped portion 31b, and the support portion 35 and the locking claw 33 are connected by a spring 36. The spring 36 urges the locking claw 33 in a direction of returning to the support portion 35 side.

  The base portion 37 is for connecting to a length adjuster 45 described below, and is provided on the connecting portion 31c side of the supporting portion 35 on the inner surface of the elevating body of the plate-shaped portion 31b. It is connected to an interposition part 71 fixed to the adjuster 45 via a rotation shaft 72. In the first embodiment, one end of the rotary shaft 72 is rotatably housed in a space formed in the base portion 37, and the rotary shaft 72 is formed in a space formed in the interposition portion 71. The other end of 72 is connected so as to be rotatably accommodated. This prevents the rotation of the cord-shaped member 8 from being transmitted to the hook 30 of the hook 3.

  As shown in FIGS. 1 and 4, the length adjuster 45 includes a cylindrical insertion portion 46 having a substantially annular through hole 46a through which the string-shaped member 8 is inserted, and a through hole 46a with respect to the insertion portion 46. It is configured to include a pair of holding plate portions 47, 47 extending radially outward, and a link mechanism 48 assembled to the holding plate portions 47, 47. In the first embodiment, the link mechanism 48 includes rotating links 51 and 52 that are rotatably connected to the holding plate-shaped portions 47 and 47 around the rotating shafts 49 and 50 by the rotating shafts 49 and 50; , 52 and fixed links 55 connected via fixed link mounting portions 53, 54. The rotating links 51 and 52 are disposed between the holding plate-like portions 47 and 47, and the tip of the rotating link 51 relative to the rotation shaft 49 and the push engagement portion 56 that stops displacement of the string-shaped member 8 in the insertion direction are provided. Has become. The push engagement portion 56 has a substantially arc-shaped portion that extends toward the rotation link 51 and expands toward the cord-shaped member 8, and can be engaged with a side portion of the cord-shaped member 8 at an outer peripheral edge of the portion. A plurality of substantially triangular pawls are formed.

  With such a configuration of the length adjuster 45, when the lock by the link mechanism 48 is working as shown in FIG. In response to the movement to be displaced in the white arrow direction, the rotation of the rotation link 51 rotates counterclockwise (movement in the locking direction), and the locking member 56 pushes the cord-shaped member 8. The locked state is maintained, and the movement of the string-shaped member 8 to be displaced in the direction of the white arrow in FIG. 4A is restricted. Then, the fixed link 55 is tilted in the direction of the thick arrow in FIG. 4B by holding the fixed link 55 by hand or the like, so that the rotation link 51 rotates clockwise (movement in the unlocking direction). ) Occurs, the state where the pawl of the push engagement portion 56 locks the string-shaped member 8 is released, and the movement of the string-shaped member 8 to be displaced in the white arrow direction in FIG. go free.

  In the first embodiment, in order to shorten the length between the connecting device 2 and the hooking device 3 of the string-shaped member 8, the string-shaped member 8 is moved in the direction opposite to the white arrow in FIG. When the side having the terminal stopper 80 is pulled, a movement of rotating the rotation link 51 clockwise (a movement in a direction of releasing the lock) occurs, and the pawl of the push engagement portion 56 causes the cord-shaped member 8 to move. The locked state is released, and the length of the cord-like member 8 between the connecting device 2 and the hooking device 3 can be adjusted.

  The illustrated length adjuster 5 is an example of a length adjuster structure to which the present invention can be applied, and may be a length adjuster having a function of fixing the length of the string-shaped member 8 to an arbitrary length. Good.

  An example of a process of attaching the connecting portion 20 of the connecting tool 1 having the above-described configuration to the connecting portion 103 of the hot stick 100 which is a kind of an existing indirect hot-line tool will be outlined with reference to FIGS. 1 and 2.

  First, the lock nut 21 is turned to displace the lock nut 21 to the lock release position where the lock nut 21 contacts the flange 22, and in this state, the connecting portion 20 of the connecting tool 1 is inserted into the connecting portion 103 of the hot stick 100. At the same time, the locking projections 20b are inserted into the slit 106a of the slit 106. Next, the connecting portion 20 of the connecting tool 1 is axially pressed against the inner surface of the connecting portion 103 to sink the movable projection 20a of the connecting portion 20 against the elastic force of the built-in spring. By rotating the portion 20, the locking projection 20b is slid along the slit portion 106b. Then, by releasing the axial force of the connecting portion 20 and returning the connecting portion 20 in the axial direction by the urging force of the movable protrusion 20a, the locking protrusion 20b is formed at the tip of the slit portion 106b. The groove is irremovably engaged with the groove. Further, after these operations are completed, the lock nut 21 is turned to displace the lock nut 21 to a lock position where the lock nut 21 is strongly brought into contact with the connection portion 103 of the hot stick 100, so that the connection tool 1 to the connection portion 103 is disengaged. The attachment of the connecting portion 20 is completed.

  Next, an example of a process in which the length of the string-shaped member 8 from the connecting device 2 to the hooking device 3 is performed using the length adjuster 45 of the hooking device 3 will be outlined with reference to FIG.

  Normally, as shown in FIG. 4A, the link mechanism 48 of the length adjuster 45 has a direction in which at least the string-shaped member 8 has a longer length from the connecting device 2 to the hooking device 3 (see FIG. 4A). 4 (a), the movement of the push engagement portion 56 rotating in the direction (counterclockwise direction) in which the push engagement portion 56 is pressed against the cord-like member 8 is applied to the rotation link 51. You're locked by giving. Therefore, for example, the operator grasps the fixed lock 55 and pushes the link mechanism 48 in the direction opposite to the hooking section 30 (in the direction of the arrow in FIG. 4B) to incline the rotating links 51 and 52, so that the pushing engagement section 56 is pressed. Is given from the rotation link 51 in a direction of separating from the string member 8 (counterclockwise direction), so that the length of the string member 8 from the connecting device 2 to the hooking device 3 becomes shorter ( Not only in the direction (the direction opposite to the white arrow in FIG. 4B) but also in the direction in which the length from the connecting device 2 to the hooking device 3 becomes longer (the direction of the white arrow in FIG. 4B). , It is possible to adjust the length of the cord-shaped member 8 from the connecting device 2 to the hooking device 3 to a desired length. In addition, the part pulled out from the through-hole 46a of the insertion part 46 of the cord-shaped member 8 is tied or entangled with the hooking target so as not to disturb the work.

  Further, the object to be hooked is an elevating body having a work floor such as a bucket, a basket, and a platform of an aerial work vehicle, and a side part of the elevating body is constituted by an upright wall 201, an extending part 202, and an inner part 203. An example of a process in which the hooking portion 30 of the hooking device 3 is hooked and then engaged with the locking claw 33 in this case will be described with reference to FIG.

  First, as shown in FIG. 5 (a), the frame 31 of the hooking portion 30 is brought into contact with the side surface of the upright wall 201 of the elevating body, and the connecting portion 31c of the extending portion 202 of the elevating body. It is hooked on the side of the elevating body such that it comes into contact with the upper surface and the plate-shaped portion 31b comes into contact with the side surface of the inner portion 203. As described above, since the substantially U-shaped frame 31 is hooked on the side of the elevating body, the hook 30 is prevented from coming off downward and sideward.

  Next, as described above, by hooking the frame body 31 on the side of the elevating body, the locking claw 33 is arranged inside the side of the elevating body. As shown in FIG. 5C, after the locking claw 33 is moved downward so that the pin 34 moves along the substantially L-shaped rail groove 32, the pin 34 is moved toward the vertical wall 201 side of the elevating body. turn. Thereby, the lower end portion of the extension portion 202 is held by the inner surface of the locking claw 33, and the locking claw 33 is engaged with the extension portion 202. As described above, the engaging claw 33 is engaged with the lower end portion of the extension portion 202, so that the hook portion 30 is also prevented from coming off upward. In order to release the locking claw 33 from the engagement state with the lower end portion of the extension portion 202, for example, an operation of pulling the locking claw 33 inward of the elevating body and shifting the locking claw 33 upward is performed. As a result, the locking claw 33 is connected to the support portion 35 by the spring 36, and therefore moves in the opposite direction along the rail groove 32 by the restoring force of the spring 36, and returns to the original state in FIG. Return to position.

  The configuration of the hook portion 30 of the hook device 3 is not limited to the hook portion 30 shown in FIGS. 1 and 3 of the first embodiment, and there are various variations. Another example of the hook 30 of the connector 1 to which the present invention is applied will be described below as a second embodiment with reference to FIGS. 6 and 7. However, the description of the same configuration and function as those of the coupler 1 of the first embodiment is omitted. In addition, the process of mounting the connecting device 2 of the second embodiment to the indirect hot-line tool such as the hot stick 100 is the same as that of the connecting device 2 of the first embodiment, and a description thereof will be omitted.

  The hooking portion 30 of the hooking device 3 shown as the second embodiment includes a substantially C-shaped distal end portion 62, a base portion 63 facing the distal end portion 62, and a connecting portion 64 connecting the distal end portion 62 and the base portion 63. And a head 61 connected to the intervening portion 71 by a rotating shaft 72. A predetermined opening S is provided between the distal end of the distal end portion 62 and the upper surface of the base portion 63. The hooking portion 30 has a movable portion 65 for opening and closing the opening S between the distal end of the distal end portion 62 and the upper surface of the base portion 63, and a rotating shaft 66 for rotating the movable portion 65. ing. The rotation shaft 66 is provided at a distal end of the base 63 opposite to the connecting portion 64. A head 61 is provided.

  The movable portion 65 includes a long plate-shaped back portion 65a, and a pair of plate-shaped facing portions 65b, 65b extending substantially in parallel in the same direction from both edges along the longitudinal direction of the back portion 65a. It has a substantially U-shaped configuration. With such a configuration of the movable portion 65, the space S between the distal end portion 62 and the base portion 63 can be closed by the back portion 65a, and the movable portion 65 is moved from the state in which the space S is closed to the closed state. The space S can be opened by rotating all or a part of the base portion 63 and the connecting portion 64 of the head 61 to a state where the base portion 63 and the connecting portion 64 are covered by the pair of facing portions 65b. When the opening S is closed, the space inside the opening S is filled with the pair of facing portions 65b, 65b, so that an obstacle enters the inside of the opening S and the movable portion 40 opens the opening S. It is possible to avoid the problem that the user cannot move. Further, the movable section 40 can be rotated so as to open the opening S by holding the facing section of the movable section 40.

  Next, a process of hooking the connecting tool 1 attached to an existing indirect hot-line tool such as a hot stick 100 on a horizontally extending rod 300 shown as an example of a hooking target will be described with reference to FIG. Outline.

  First, as shown in FIG. 7A, after the hooking device 3 of the connecting tool 1 is reversed from the state shown in FIG. 6 and the head 61 of the hooking unit 30 is adjusted to be close to the rod 300. The movable portion 65 is pressed inward by gripping the movable portion 65 with an operator's hand or the like. As a result, the movable portion 65 rotates about the rotation shaft 66 as a rotation center, and the movable portion 65 is tilted to open the opening S as shown in FIG. 7B. Next, the hook 300 is operated while the movable part 65 in FIG. 7B is tilted to open the opening S, and the rod 300 is moved to the head as shown in FIG. 7C. The tip 61 is directed toward the arc-shaped inner surface of the tip 62. Further, in a state in which the rod 300 of FIG. 7C is in contact with the arc-shaped inner surface of the distal end portion 62 of the head 61, the force for pushing the movable portion 65 inward is released. Thereby, the movable part 65 returns to the original state, and the existing indirect hot-line tool such as the hooking device 3 and the hot stick 100 can be hooked on the rod 300.

  Removal of the hooking unit 30 of the hooking device 3 from the rod body 300 is performed by, for example, grasping the movable unit 40 and applying a pushing force to the movable unit 40 in a tilting direction, so that the state shown in FIG. Thereafter, the opening S is removed from the rod 300.

REFERENCE SIGNS LIST 1 Connecting tool for indirect hot-line tool 2 Connecting tool 20 Connecting section 24 Base 26 Rotating shaft 3 Hooking instrument 30 Hooking section 31 Frame 31a Plate 31b Plate 32 Rail groove 33 Locking claw 34 Pin 45 Length adjustment Container 46 Insertion part 48 Link mechanism 61 Head 62 Tip part 65 Movable part 71 Interposition part 72 Rotation axis 8 String member 100 Hot stick (tool for indirect hot wire)
103 Connection

Claims (5)

A connecting device having a connecting portion connectable to a connecting portion provided on an end side of the rod body of the indirect live tool, and a hooking device having a hooking portion for hooking on a hooking object; A connector for the indirect hot-line tool, wherein the hooking device is connected by a string-shaped member,
The said hooking tool has a length adjuster which adjusts the length of the said string-shaped member from the said connection tool to the said hooking tool, The connection tool of the tool for indirect live-line tools characterized by the above-mentioned. The connection device has a portion having the connection portion, and a portion that is separate from the portion having the connection portion and has a base portion to which the string-shaped member is connected, and the portion having the connection portion and the base portion have Connected by a rotating shaft, the portion having the connecting portion and the base portion are mutually rotatable around the rotating shaft,
The hooking device further includes an interposition portion for connecting the hook portion and the length adjuster, and the interposition portion is separate from the hook portion, and the string-shaped member is connected, The said hook part and the said intervention part are connected by the rotating shaft, The said hook part and the said intervention part are mutually rotatable centering on the said rotation axis, The claim of Claim 1 characterized by the above-mentioned. Connection tool for indirect hot-line tools.   The length adjuster has an insertion portion through which the cord-like member is inserted, and a lock mechanism for locking displacement of the cord-like member inserted in the insertion portion in the insertion direction and releasing the lock. The connecting tool for an indirect hot-line tool according to claim 1 or 2, wherein   The hook portion has a frame having two plate portions, and a locking claw attached to one end of the two plate portions, and is formed at an end portion of the plate portion. The locking claw is attached to a rail groove, and the locking claw moves along the rail groove, thereby engaging and disengaging the hooking target. 4. The connecting tool for an indirect hot-line tool according to any one of 1, 2, and 3. The hook portion includes a head having a distal end portion having an inner peripheral surface capable of contacting an outer peripheral surface of the hooking target, and the hooking target having an outer peripheral surface contacting an inner peripheral surface of the distal end portion. 4. The connecting tool for an indirect hot-line tool according to claim 1, further comprising a movable portion for holding the tool.

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